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Open Access Review

Potential of Coupling Heavy Metal (HM) Phytoremediation by Bioenergy Plants and Their Associated HM-Adapted Rhizosphere Microbiota (Arbuscular Mycorrhizal Fungi and Plant Growth Promoting Microbes) for Bioenergy Production

Received: 22 July 2021;  Published: 14 December 2021;  doi: 10.21926/jept.2104049

Abstract

There is growing concern for the contamination of our soils and waters worldwide with heavy metals (HMs), as a result of indiscriminate use of agrochemicals for feeding growing population which require optimal use of resources and sustainable agricultural strategies. This can be simultaneously achieved by using microbes as bio-fertilizers, bio-protectants, and bio-stimulants, and suitable phytoremediation- plant capable of removing heavy metals contaminants from contaminated sites. There is a growing need to adopt [...]

1371 10586

Open Access Research Article

The Drag Forces on a Taylor Bubble Rising Steadily in Vertical Pipes

Received: 04 October 2021;  Published: 07 December 2021;  doi: 10.21926/jept.2104048

Abstract

By the adoption of a drag-buoyancy equality model, analytical solutions were obtained for the drag coefficients (CD) of Taylor bubbles rising steadily in pipes. The obtained solutions were functions of the geometry of the Taylor bubble and the gas volume fraction. The solutions were applicable at a wide range of Capillary numbers. The solution was validated by comparison with experimental data of other investigators. All derived drag formulas were subject to the condition that Bond number >4, for air-water syste [...]

1594 9871

Open Access Original Research

Effect of Mineral Additives on Fusion Behavior of Agricultural Residue Ashes during Combustion or Co-combustion with Lignite

Received: 06 September 2021;  Published: 11 November 2021;  doi: 10.21926/jept.2104047

Abstract

In this work, the conducted chemical, mineralogical, fusibility, and thermogravimetric analyses and calculated the slagging/fouling indicators for predicting deposition tendencies in boilers to study the ash fusibility behavior of selected agricultural residues and their blends with lignite. Two additives, bauxite, and clinochlore, were used at varying amounts to reduce ash melting, followed by examining their anti-fusion mechanisms. Initial deformation and softening temperatures of biomass materials were low for c [...]

1794 11194

Open Access Research Article

Variation of CO2-Brine Contact Angles on Natural Rocks of Different Compositions

Received: 05 September 2021;  Published: 05 November 2021;  doi: 10.21926/jept.2104046

Abstract

Contact angles were measured for CO2-brine interactions on 20 different rocks that represent the properties of various CO2 storage depositional environments to characterize the wettability during geologic carbon storage. Three different CO2 phases (gaseous, liquid, and supercritical) were considered to investigate the effect of pressure and temperature. Bubbles were studied in two groups of larger and smaller than 500 μm, the latter being more relevant to pore scale. Variation was observed among contact angle measu [...]

1815 13226

Open Access Original Research

Hydrogen Storage in Cryogenic, Cybernetic, and Catalytic Vessels for Transport Vehicles

Received: 18 June 2021;  Published: 29 October 2021;  doi: 10.21926/jept.2104045

Abstract

Most of the hydrogen storage vessels meant for vehicles to run the electric motor via a fuel cell during transport are designed for drives of only a few tenths of kilometers per day. The present report, however, describes a vessel model that is conceived to hold the hydrogen energy only for short periods during transport, such as a few hours. This would include transport via a light-duty vehicle, a taxi, or a bus, which would load liquid hydrogen at a station every morning for the day. This is a simple model based [...]

1533 15778

Open Access Original Research

Advances in Wind Farm Layout Optimization: Wind Direction Robustness and Wake Induced Asymmetric Thrust Load

Received: 20 July 2021;  Published: 25 October 2021;  doi: 10.21926/jept.2104044

Abstract

In this study, we address the wind farm layout optimization (WFLO) problem and tackle the issue of optimal turbine placement by incorporating additional aspects of an economically driven target function. Firstly, we have analyzed the effect of wind direction on a given turbine arrangement. Based on the direction-dependent wake pattern, practitioners sometimes shut down certain turbines on their farms. Our method computes which turbines should be shut down in which wake situation. On this basis, we have developed a [...]

1134 8556

Open Access Review

Ion Transport in Organic Electrolyte Solutions for Lithium-ion Batteries and Beyond

Received: 24 May 2021;  Published: 27 September 2021;  doi: 10.21926/jept.2103043

Abstract

The performance of metal-ion batteries at low temperatures and their fast charge/discharge rates are determined mainly by the electrolyte (ion) transport. Accurate transport properties must be evaluated for designing and/or optimization of lithium-ion and other metal-ion batteries. In this review, we report and discuss experimental and atomistic computational studies on ion transport, in particular, ion diffusion/dynamics, transference number, and ionic conductivity. Although a large number of studies focusing on l [...]

2700 28261

Open Access Original Research

Development of the Flash Ironmaking Technology (FIT) for Green Ironmaking with Low Energy Consumption

Received: 28 June 2021;  Published: 23 September 2021;  doi: 10.21926/jept.2103042

Abstract

This article describes the development of a novel ironmaking technology based on flash reduction. The development started with the proof of the kinetic feasibility, considering that a typical flash reactor provides only a few seconds of residence time. This was followed by tests in a laboratory flash reactor and finally a pilot plant operation. The rate equations formulated in this work were developed considering the optimum combination of temperature, residence time, and reducing gas partial pressure to achieve &# [...]

2586 19217

Open Access Original Research

Aqueous Lithium--Air Batteries with High Power Density at Room Temperature under Air Atmosphere

Received: 30 June 2021;  Published: 23 September 2021;  doi: 10.21926/jept.2103041

Abstract

Rechargeable batteries with higher energy and power density exceeding the performance of the currently available lithium-ion batteries are suitable for application as the power source in electric vehicles (EVs). Aqueous lithium-air batteries are candidates for various EV applications due to their high energy density of 1910 Wh kg-1. The present study reports a rechargeable aqueous lithium-air battery with high power density at room temperature. The battery cell comprised a lithium anode, a non-aqueous anode electro [...]

1633 12792

Open Access Original Research

Energy Storage and Installed Wind Capacity Requirements for the Substitution of Fossil Fuels in the Electricity Generation Sector

Received: 19 April 2021;  Published: 10 September 2021;  doi: 10.21926/jept.2103040

Abstract

The impending adverse effects of Global Climate Change encourages the substitution of fossil fuels with non-carbon sources for electricity generation. However, while fossil fuel power plants may generate electric power at demand, the most abundant renewable energy sources-wind and solar-are intermittent or periodically variable. This necessitates the development of adequate energy storage at the utility/grid level. Using actual data for the hourly energy demand in the ERCOT electricity grid, this study examines the [...]

1387 10587

Open Access Research Article

GIS-based MCDM Approach for Wind Farm Site Selection - A Case Study

Received: 08 May 2021;  Published: 17 August 2021;  doi: 10.21926/jept.2103039

Abstract

The objective of this study is the development and implementation of a geographic information system (GIS)-based methodology to determine suitable sites for wind farms by using multicriteria decision making (MCDM) techniques. Many eligibility criteria are considered in this approach, such as GIS analysis is performed in combination with MCDM techniques, both for the criteria weighting process (using the analytical hierarchical process) and for the standardization/classification of the criteria values into a common [...]

1869 18620

Open Access Original Research

New Electrocatalysts Prepared by Co-Sputter Deposition for the Direct Oxidation of Methanol

Received: 25 May 2021;  Published: 13 August 2021;  doi: 10.21926/jept.2103038

Abstract

Direct methanol oxidation catalysts Pt1-x-Tax (0

1481 10288

Open Access Original Research

A Highly-efficiency Position Sensorless Electric Vehicle Synchronous Reluctance Motor Drive

Received: 02 May 2021;  Published: 11 August 2021;  doi: 10.21926/jept.2103037

Abstract

The development of high-efficiency motor drives for various applications is important in the industry 4.0 era, especially for their extensive application to electric vehicles (EVs). In this study, a position sensorless EV synchronous reluctance motor (SynRM) drive has been developed, which exhibits good driving performance and efficiency over a wide speed and load range. To solve the key problems popularly encountered in the existing approaches, the high-frequency injection (HFI) scheme based on q-axis injection ha [...]

1471 9686

Open Access Research Article

Maintenance Optimization of Wind Turbines Using Weather-Dependent Equivalent Age Model

Received: 26 April 2021;  Published: 04 August 2021;  doi: 10.21926/jept.2103036

Abstract

Aging models are important input into wind farm maintenance and financial viability models. Aging of wind turbines depends on many factors, including both ambient and usage conditions. This paper presents a virtual age based maintenance model for wind turbines considering the effect of wind speed and ambient air temperature on turbine aging. Two maintenance thresholds (i.e., corrective threshold and preventive threshold) and three repair actions (i.e., unscheduled corrective, scheduled corrective and preventive act [...]

1518 11570

Open Access Original Research

A Comparative Study of Structural, Optical and Electrical Properties of Fe-ZnO Nanoparticles Synthesized by Precipitation and Microwave Method for Photovoltaic Applications

Received: 12 May 2021;  Published: 04 August 2021;  doi: 10.21926/jept.2103035

Abstract

Iron doped ZnO (Fe-ZnO) nanoparticles were synthesized using two techniques that are economical as well as scalable to yield tunable properties of nanoparticles for facilitating down conversion in an absorbing layer of a solar cell. To evaluate the suitability of Fe-ZnO nanoparticles prepared by two deposition methods, we present a comparison of optical, electrical, and structural properties of Fe-ZnO using several experimental techniques. Structural properties were analyzed using transmission electron microscopy a [...]

1558 10161

Open Access Review

EnergyPlus-Towards the Selection of Right Simulation Tool for Building Energy and Power Systems Research

Received: 05 February 2021;  Published: 19 July 2021;  doi: 10.21926/jept.2103034

Abstract

This article offers the summary of detailed literature review on the state of the art of simulation tools for building energy and power system research. The fundamental capabilities required for building energy and power system analysis tools are outlined. A comparative review of different energy simulation tools is presented, along with the summary of their strengths and weaknesses. A review of energy simulation tool rankings using evidence-based research is presented. A novel aspect of this article is the investi [...]

3091 19382

Open Access Review

A Review on the Application of the MPC Technology in Wind Power Control of Wind Farms

Received: 23 April 2021;  Published: 15 July 2021;  doi: 10.21926/jept.2103033

Abstract

Due to the uncertainty and volatility of wind speed, its natural output power also exhibits strong volatility. In order to avoid the negative effects of the excessive fluctuation of the output power of wind turbines in the wind farm and the power grid, it is very important to accurately predict and reasonably plan and control the output power of the wind farm. Model predictive control (MPC) is a type of advanced control method that can deal with a multi-input multi-output nonlinear system. Compared to the tradition [...]

2140 14520

Open Access Research Article

Synthetical Optimal Design for Passive-Damped LCL Filters in Islanded AC Microgrid

Received: 19 May 2021;  Published: 08 July 2021;  doi: 10.21926/jept.2103032

Abstract

In AC microgrid systems, technical issues resulting from the power control effect are the power control method efficiency and the filter resonance since voltage-frequency interference and filtering resonance may cause significant control input reduction and oscillation. A simple and robust solution is to regulate active power flow by adding an optimal passive damping resistor. The optimal LCL filter parameterization process in this paper provides an innovative approach to obtain the optimal quality factor and the o [...]

1954 14881

Open Access Original Research

Measurements of Overwater Gust Factor from Near Surface to Beyond Common Hub Height: A Case Study

Received: 13 December 2020;  Published: 06 July 2021;  doi: 10.21926/jept.2103031

Abstract

In September 2020 Hurricane Sally affected the north central Gulf of Mexico. Making use of the anemometers data available at 4 oil rigs over the affected region, it is found that, when the atmospheric stability was near-neutral, the gust factor (G) decreases linearly with height from approximately 1.28 at 35m above the sea surface to 1.18 at 160 m. In other words, G decreases linearly at the rate around 8% per 100 m from the typical hub height to beyond common hub height. Based on the linear equation found in this [...]

1414 7833

Open Access Original Research

Design and Implementation of a Laboratory Sucker Rod Pumping Unit Using Industry 4.0 Concepts

Received: 15 February 2021;  Published: 30 June 2021;  doi: 10.21926/jept.2102030

Abstract

The Industry 4.0 is here, and advanced technologies are widely available for domains such oil and gas which are traditionally slow in adopting extreme new technologies. This paper presents the design architecture and implementation of effective data acquisition (DAQ) and monitoring system applied to an experimental sucker rod pumping unit for both event occurrence and educational purpose using latest technological advancements and industry 4.0 principles. The designed framework allows control and monitoring of anal [...]

2553 14202

Open Access Review

Dynamic Behavior of Li in Solid-State Li-Ion Batteries Studied using MeV Ion Beam Analysis Techniques

Received: 26 March 2021;  Published: 24 June 2021;  doi: 10.21926/jept.2102029

Abstract

In this review, various studies on the Li depth profiles of metal/electrolyte/metal capacitors and batteries of Au/LCO/LATP/Pt, LCO/LiPON/Si, and LMO/LiPON/NbO with different metal electrodes at both sides (by bias; LCO =LiCoO2, LATP =Li3.1Al0.86Ti1.14Ge1.27P1.73O12, LMO =LiMn2O4, NbO = Nb2O5) using the in-situ reflection ERD (ERD) technique with 9MeV O+4 ion beam and transmission ERD (TERD) technique with 5MeV He+2 ion beam, respectively, are described. For capacitors, the transport fraction of Li-ion in the elect [...]

1624 8780

Open Access Original Research

Development of Wind IPMSG Based Bipolar DC Microgrids

Received: 25 February 2021;  Published: 22 June 2021;  doi: 10.21926/jept.2102028

Abstract

This paper presents the development of a wind Interior Permanent-Magnet Synchronous Generator (IPMSG) based bipolar DC microgrids along with various switch-mode rectifiers. Firstly, the wind IPMSG is established and adequately controlled to possess satisfactory generating characteristics during different driven speeds and loads. Later, the boost switch-mode rectifier (SMR) based bipolar DC bus is established. Further, three-phase single-switch (3P1SW) boost SMR, three-phase two-switch (3P2SW) three-level boost SMR, [...]

1575 9277

Open Access Original Research

Automated Probabilistic Analysis and Parametric Modelling of the Seasonal-Diurnal Wind Vector

Received: 14 April 2021;  Published: 25 June 2021;  doi: 10.21926/jept.2102027

Abstract

A refined and extended version of the Offset Elliptical Normal mixture model has been developed to parameterise the seasonal diurnal wind vector automatically. Automated using R scripts, the method eliminates any potential risk of confirmation bias posed by the manual supervision in the original method. Refinements to the method include the latest algorithms for clustering of Gaussian mixtures, with Bayesian regularisation to set the number of components and to limit the predisposition to overfit. A new extension u [...]

1432 8436

Open Access Research Article

Numerical Investigation of Pyrotechnical Initiators and Their Impact in Airbag Inflator Applications: Ballistic Modeling and Functional Analysis

Received: 02 April 2021;  Published: 28 June 2021;  doi: 10.21926/jept.2102026

Abstract

A numerical model describing the ballistic behavior of a commercially used initiator is presented in this article. This model was built on the principle of conservation of mass and energy in the multi-phase framework incorporated with multi-loaded conditions. After obtaining the information about the grain size distribution in each composite, a fixing factor was proposed based on the surface area ratio of the composites. Thus, the solid propellant burning process based on distributed grain size was described, and t [...]

2743 15756

Open Access Original Research

Estimating Met-Ocean Parameters during a Tropical Cyclone for Marine Science and Engineering

Received: 16 April 2021;  Published: 16 June 2021;  doi: 10.21926/jept.2102025

Abstract

During a tropical cyclone (TC) worldwide, the Regional and Mesoscale Meteorological Branch (RAMMB) of NOAA/NESDIS (http://rammb.cira.colostate.edu/) issues real-time TC surface wind analyses. The purpose of this article is to provide value-added estimations of several meteorological and oceanographic (met-ocean) parameters including overwater friction velocity and turbulence intensity, variation of the wind speed with height, significant wave height, peak or dominant wave period, wind-driven currents and wind-stres [...]

1872 10599

Open Access Original Research

Performance Investigation of a Nickel Cermet Anode Modified with Copper, Alkaline Earth Metal Oxide, Boron, and Perovskite for Direct Methane Fuel Cell

Received: 26 April 2021;  Published: 11 June 2021;  doi: 10.21926/jept.2102024

Abstract

The metallic copper, alkaline earth metal oxide, boron, and perovskite were incorporated on the surface of a Ni-cermet anode, and the performance of the modified Solid Oxide Fuel Cell (SOFC) anode was evaluated. The cell performance was analyzed by voltage-current characteristics (V-I curve) and H2-CH4 step reactions (P-t curve) in a potentiostatic mode. Besides, we also determined if a metallic phase or high electronic conductivity of the anode is important for a cell to perform well when H2 is used as a fuel, whe [...]

1912 11123

Open Access Research Article

Interconnected Operations of Electric Vehicle to Grid and Microgrid

Received: 19 December 2020;  Published: 31 May 2021;  doi: 10.21926/jept.2102023

Abstract

This paper presents the development of a high-performance electric vehicle (EV) synchronous reluctance motor (SynRM) drive and its vehicle-to-grid (V2G) and vehicle-to-microgrid (V2M) bidirectional operations. The EV motor drive boostable DC-link voltage is established by a battery through a bilateral interface boost-buck DC-DC converter for good driving performance over a wide speed range. The motor efficiency is 92.3% near the rated load. In idle conditions, the embedded interface converter and inverter of the mo [...]

1923 11704

Open Access Original Research

An Ab Initio Study of Li/Ni-doped NaxMeO2 Cathode Material for Na-Ion Batteries

Received: 02 November 2020;  Published: 10 June 2021;  doi: 10.21926/jept.2102022

Abstract

The current state-of-the-art quantum mechanics methodologies were applied to derive information on the bulk and surface properties of the P2-type layered oxide Na0.85Li0.17Ni0.21Mn0.64O2 (NLNMO), a cathode material. The special quasi-random structure (SQS) approach was employed to identify the arrangement of Li, Ni, and Mn ions in a supercell containing 115 atoms. Both the cell parameters and atomic positions were determined from DFT-PBE+U calculations to highlight specific distortions induced by the dopants (Ni an [...]

1853 10651

Open Access Original Research

Damage Mechanics of Carbon Nanotubes

Received: 27 October 2020;  Published: 10 May 2021;  doi: 10.21926/jept.2102021

Abstract

A robust mathematical method for the characterization of damage in carbon nanotubes is presented the presentation here is limited to elasticity. In this regard, the second and third order elastic stiffnesses are employed. All this is based on damage mechanics. The hypotheses of elastic strain equivalence and elastic energy equivalence are utilized. A new damage variable is proposed that is defined in terms of the surface area. This is in contrast to the classical damage variable which is defined in terms of the cro [...]

1333 7757

Open Access Review

Hybrid Materials and Nanoparticles for Hybrid Silicon Solar Cells and Li-Ion Batteries

Received: 09 November 2020;  Published: 08 May 2021;  doi: 10.21926/jept.2102020

Abstract

Hybrid composites based on inorganic nanomaterials embedded into a polymer matrix have were synthesized and characterized. Oxide semiconductor nanoparticles (SnO, SnO2, TiO2, Ga2O3, and NiO) and Si nanoparticles were employed as inorganic counterparts in the hybrid composite, while a conductive polymer (PEDOT:PSS) with diverse additives was used as the organic matrix. The composites were spin-coated on Si or glass substrates. The potential use of these materials in photovoltaic devices to improve Si surface passiva [...]

2039 10932

Open Access Review

Lithium Metal Anode for High-Power and High-Capacity Rechargeable Batteries

Received: 21 February 2021;  Published: 08 May 2021;  doi: 10.21926/jept.2102019

Abstract

Because lithium metal exhibits high specific capacity and low potential, it is the best candidate for fabricating anodes for batteries. Rechargeable batteries fabricated using lithium anode exhibit high capacity and high potential cathode; these can be potentially used to fabricate high energy density batteries (>500 Wh kg-1) that can be used for the development of next-generation electric vehicles. However, the formation and growth of lithium dendrites and the low coulombic efficiency recorded during lithiu [...]

2195 15422

Open Access Research Article

A Wind Turbine Emulator Using Field-Oriented Induction Motor

Received: 18 December 2020;  Published: 28 April 2021;  doi: 10.21926/jept.2102018

Abstract

This paper proposes a Wind Turbine Emulator (WTE) using an Indirect Field Oriented (IFO) Induction Motor (IM). The IM drive can be controlled as a conventional prime mover in speed mode, or a wind turbine in torque-speed mode via robust observed torque control. This paper presents key issues for establishing a high-performance IFO IM drive. Further, this study develops a wind turbine load Interior Permanent-Magnet Synchronous Generator (IPMSG) followed by a three-phase Vienna Switch-Mode Rectifier (SMR). It receive [...]

1785 10085

Open Access Research Article

Hot Water Preparation along with Combined Solar Thermochemical Energy Storage System: Experimental Validation and Performance Simulation

Received: 18 December 2020;  Published: 14 April 2021;  doi: 10.21926/jept.2102017

Abstract

Hybrid solar thermal systems are considered to be a promising solution for delivering clean thermal energy for the building sector, especially while combining them with other renewable energy sources. Usually, solar energy production does not match the thermal energy demand, and hence the energy storage must be integrated. Thermochemical energy storage is adapted particularly to be used along with solar thermal applications. In this article, the design of the combined solar thermochemical energy storage system is p [...]

1442 8586

Open Access Research Article

A Switched-Reluctance Motor Drive Powered by Switch-Mode Rectifier with Battery Energy Storage Buffer

Received: 23 December 2020;  Published: 07 April 2021;  doi: 10.21926/jept.2102016

Abstract

This paper presents a three-phase full-bridge boost switch-mode rectifier (SMR) fed switched-reluctance motor (SRM) drive with energy storage buffer. First, the power circuits and control schemes of the two power stages are properly designed. Except for having good line drawn power quality, the boostable DC-link voltage of the SRM drive can enhance the SRM driving performance in wide speed range. And the recovered regenerative braking energy can be sent back to the grid successfully. Then, a battery storage system [...]

1546 8920

Open Access Original Research

Zinc Silicate Thin Film Composites Obtained by a Sputtering Based Approach: Structural, Dielectric and Photovoltaic Properties

Received: 19 January 2021;  Published: 02 April 2021;  doi: 10.21926/jept.2102015

Abstract

This study deals with the production of zinc silicate thin films employing a solid-state reaction at temperatures ranging from 300 °C to 560 °C, to develop new inorganic, n-type materials with seemingly incompatible properties as low work function, high mobility, and high visible transmittance. Depending on a careful reaction control, zinc silicates can preserve reagents (silicon and/or ZnO) as nanoaggregate guests, exhibiting tunable light absorption and emission properties that make them useful for differ [...]

2065 11164

Open Access Original Research

Nowcasting Wind, Wave, Current and Turbulence Intensity for Offshore Wind Power Operation and Maintenance

Received: 21 December 2020;  Published: 24 March 2021;  doi: 10.21926/jept.2101014

Abstract

In order to improve offshore wind power operation and maintenance (O&M), particularly during tropical and non-tropical cyclones, short-term forecasts or nowcasts up to 6 hours of meteorological and oceanographic (met-ocean) parameters including wind, waves, currents and turbulence intensity are needed. On the basis of numerous air-sea and wind-wave interaction experiments, datasets are analyzed including those from simultaneous measurements of wind and waves during Hurricane Wilma. Formulas are presented for nowcas [...]

5453 33257

Open Access Original Research

Crustal Reservoir Flow Simulation for Long-Range Spatially-Correlated Random Poroperm Media

Received: 30 November 2020;  Published: 19 March 2021;  doi: 10.21926/jept.2101013

Abstract

In interest of accurately modelling wellbore production in convective geothermal systems, we draw attention to two approaches to numerical simulation of crustal fluid flow. The historical "strong" approach simulates the fluid mass conservation condition on a localised finite difference mesh approximation to poroelastic continua. The more flexible "weak" approach globally enforces fluid mass conservation by in effect integrating over all numerical mesh cells. Strong formulation crustal flow simulation emerged from n [...]

1589 8746

Open Access Original Research

Multi-Disciplinary and Multi-Scale Assessment of Marine Renewable Energy Structure in a Tidal System

Received: 08 October 2020;  Published: 17 March 2021;  doi: 10.21926/jept.2101012

Abstract

The French coast of the Atlantic and English Channel (EC) is promising for the development of Marine Renewable Energy (MRE), including wind, wave, and tidal stream, due to the high velocity of currents in some parts of the area. This paper, focusing on wind and tidal energy, discusses how the implementation of MRE converters influences biodiversity, and vice versa, through biofouling and reef effects. The understanding of these interactions requires the knowledge of the hydro-sedimentary conditions and the macrofau [...]

1610 9301

Open Access Review

Accelerated Controller Tuning for Wind Turbines Under Multiple Hazards

Received: 26 December 2020;  Published: 04 March 2021;  doi: 10.21926/jept.2101011

Abstract

During their lifecycle, wind turbines can be subjected to multiple hazard loads, such as high-intensity wind, earthquake, wave, and mechanical unbalance. Excessive vibrations, due to these loads, can have detrimental effects on energy production, structural lifecycle, and the initial cost of wind turbines. Vibration control by various means, such as passive, active, and semi-active control systems provide crucial solutions to these issues. We developed a novel control theory that enables semi-active controller tuni [...]

1856 9916

Open Access Original Research

High Energy Density Rechargeable Aqueous Lithium Batteries with an Aqueous Hydroquinone Sulfonic Acid and Benzoquinone Sulfonic Acid Redox Couple Cathode

Received: 12 January 2021;  Published: 24 February 2021;  doi: 10.21926/jept.2101010

Abstract

The demand for high energy density rechargeable batteries beyond lithium-ion batteries has increased for electric vehicles. In the present study, a novel high energy density rechargeable aqueous lithium battery was proposed. The battery was composed of a lithium metal anode, a lithium-stable non-aqueous electrolyte, a water-stable lithium-ion conducting solid electrolyte of Li1.4Al0.4Ge0.2Ti1.4(PO4)3-epoxy-TiO2 separator, and a hydroquinone sulfonic acid (HQS)/benzoquinone sulfonic acid (BQS) redox couple in an aqu [...]

2013 12122

Open Access Original Research

Melting/Solidification Processes of PEG 1500 in Vertical and Horizontal Annular Enclosure

Received: 01 December 2020;  Published: 31 January 2021;  doi: 10.21926/jept.2101009

Abstract

In this paper, the primary aim is to look at the fundamental melting/solidification processes of polyethylene glycol 1500 (PEG 1500) for energy storage - insulation to prolong the cooling time of pipelines in unexpected shut-down conditions, prevent/minimize the wax deposition, and hydrate formation. Polyethylene glycol 1500 was selected because its melting temperature is >317 K making it a suitable candidate as lagging material to prevent wax deposition and hydrate formation in subsea oil pipelines. Experim [...]

1684 10272

Open Access Original Research

Modeling of Ceria Reduction in a Solar Thermochemical Reactor via DEM Method

Received: 09 November 2020;  Published: 30 January 2021;  doi: 10.21926/jept.2101008

Abstract

Solar thermochemical reactor provides an attractive approach that utilizes the most common solar radiation as the thermal driving force to motivate the reaction between CO2 and metal oxides, which is also called metal oxide redox pair-based thermochemical cycles. The CeO2/CeO2-δ is widely used in the two-step redox process due to its advantages including fast-redox kinetics, high crystallographic stability of a wide range of reacting oxygen non-stoichiometry, and relatively high oxygen solid-state conductivit [...]

1826 11544

Open Access Review

Ni-Silica-based Catalysts for CH4 Reforming by CO2 with Enhanced Stability: Recent Designs and the Impacts of Ni Confinement, Promoters, and Core-Shell Structures

Received: 01 September 2020;  Published: 26 January 2021;  doi: 10.21926/jept.2101007

Abstract

CO2 reforming of CH4, also referred to as the Dry Reforming of Methane (DRM), is considered an excellent method to produce H2 and CO (syngas), which are known to be used for the production of higher alkanes and oxygenates. Despite nickel’s moderate toxicity, Ni-based heterogeneous catalysts are considered excellent candidates for use in DRM due to their reasonable performances and economic advantages. However, these materials also present severe drawbacks, such as sintering of the active phase and coke (carbo [...]

2434 13682

Open Access Original Research

Quaternary Hydrides Pd1-y-zAgyCuzHx Embedded Atom Method Potentials for Hydrogen Energy Applications

Received: 10 November 2020;  Published: 25 January 2021;  doi: 10.21926/jept.2101006

Abstract

The Pd-H system has attracted extensive attention. Pd can absorb considerable amount of H at room temperature, this ability is reversible, so it is suitable for multiple energy applications. Pd-Ag alloys possess higher H permeability, solubility and narrower miscibility gap with better mechanical properties than pure Pd, but sulfur poisoning remains an issue. Pd-Cu alloys have excellent resistance to sulfur and carbon monoxide poisoning and hydrogen embrittlement, good mechanical properties, and broader temperature [...]

1847 11627

Open Access Technical Note

Spatio-Temporal Metocean Measurements for Offshore Wind Power

Received: 24 November 2020;  Published: 22 January 2021;  doi: 10.21926/jept.2101005

Abstract

This paper presents the case for the use of HF radar to provide wave, current and wind measurements and maps during the surveying, resource and impact assessment, construction, maintenance and performance assessment phases of an offshore fixed or floating wind farm or other marine renewable project. The data presented are from the Celtic Sea which is currently the focus of a lot of offshore wind interest. The data are from a dual radar system deployed at the Wave Hub site off the Cornwall coast since 2011, a single [...]

2054 13053

Open Access Project Report

SOFC Stack and System Modeling, Fault Diagnosis and Control

Received: 31 July 2020;  Published: 18 January 2021;  doi: 10.21926/jept.2101004

Abstract

This report is an account of research and development activities undertaken by the Centre for Process Systems Computations, Department of Chemical Engineering at Curtin University, Western Australia in the area of solid oxide fuel cells. The focus of work of the group included 1)effect of cell macrostructure and microstructure on electrochemical performance with a view to optimise both macro- and micro-structure 2) electrochemistry modeling for simulating electrochemical performance 3) internal reforming aspects im [...]

2567 15215

Open Access Original Research

Online State of Charge Prediction in Next Generation Vehicle Batteries Using Deep Recurrent Neural Networks and Continuous Model Size Control

Received: 31 July 2020;  Published: 12 January 2021;  doi: 10.21926/jept.2101003

Abstract

This investigation presents a data-driven Long-short Term Memory battery model for predicting State of Charge for lithium-ion batteries LiFePO4 for next-generation vehicle operations. Our modified algorithm builds and updates a model using multivariate inputs that include physical properties, voltage, current, and ambient temperature during operations. The primary research goal is to improve prediction performance on future values from multiple training examples using an online learning scheme. Initial results demo [...]

1820 10480

Open Access Editorial

Acknowlegement to Reviewers of Journal of Energy and Power Technology in 2020

Received: 07 January 2021;  Published: 07 January 2021;  doi: 10.21926/jept.2101002

Abstract

The editors of Journal of Energy and Power Technology would like to express their sincere gratitude to the following reviewers for assessing manuscripts in 2020. We greatly appreciate the contribution of expert reviewers, which is crucial to the journal's editorial process. We aim to recognize reviewer contributions through several mechanisms, of which the annual publication of reviewer names is one. Reviewers receive a voucher entitling them to a discount on their next LIDSEN publication and can download a cer [...]

965 5244

Open Access Original Research

Assessment of Cu(In, Ga)Se2 Solar Cells Degradation due to Water Ingress Effect on The CdS Buffer Layer

Received: 28 October 2020;  Published: 06 January 2021;  doi: 10.21926/jept.2101001

Abstract

The effect of water ingress on the surface of the buffer layer of a Cu(In, Ga)Se2 (CIGS) solar cell was studied. Such degradation can occur either during the fabrication process, if it involves a chemical bath as is often the case for CdS, or while the modules are in the field and encapsulants degrade. To simulate the impact of this moisture ingress, devices with a structure sodalime glass/Mo/CIGS/CdS were immersed in deionized water. The thin films were then analyzed both pre and post water soaking. Dynamic second [...]

1978 1634111

Open Access Review

Solar Thermal Energy Stills for Desalination: A Review of Designs, Operational Parameters and Material Advances

Received: 28 September 2020;  Published: 29 December 2020;  doi: 10.21926/jept.2004018

Abstract

The demand for high-quality freshwater is increasing due to global population growth, intensifying agricultural practices and expanding industrial development. Additionally, many global regions have low levels of rainfall which makes them arid and incapable of supporting large human populations or agriculture. Currently, large quantities of fossil fuels are used to generate the power needed to drive energy intensive desalination processes that deliver high-quality freshwater to many of these regions. However, the u [...]

2288 27770

Open Access Research Article

Further Understanding of Uncertainties in the Impedance Spectrum of the Polymer Electrolyte Fuel Cell due to Inductive Effects and Oxygen Diffusion Time Constant

Received: 31 July 2020;  Published: 24 November 2020;  doi: 10.21926/jept.2004017

Abstract

In this study, uncertainties during the assessment of the electrochemical impedance spectrum of the polymer electrolyte fuel cell (PEFC) attributed to inductive artefacts at high frequencies and inductive loops at low frequencies as well as oxygen diffusion time constant are discussed. A validated impedance model represented as an equivalent electrical circuit of a PEFC allowed the simulation of the effect of inductive artefacts, inductive loops and oxygen diffusion time constant on electrochemical impedance spectr [...]

1736 10483

Open Access Review

Research Requirements to Move the Bar forward Using Aqueous Formate Salts as H2 Carriers for Energy Storage Applications

Received: 01 September 2020;  Published: 23 November 2020;  doi: 10.21926/jept.2004016

Abstract

In this perspective on hydrogen carriers, we focus on the needs for the development of robust active catalysts for the release of H2 from aqueous formate solutions, which are non-flammable, non-toxic, thermally stable, and readily available at large scales at reasonable cost. Formate salts can be stockpiled in the solid state or dissolved in water for long term storage and transport using existing infrastructure. Furthermore, formate salts are readily regenerated at moderate pressures using the same catalyst as for [...]

1918 11726

Open Access Research Article

Testing the Correlation between Prior Knowledge of - and Visualisation Guided WTPs for Reducing the Visual Impacts Visual from Offshore Wind Farms

Received: 28 April 2020;  Published: 12 August 2020;  doi: 10.21926/jept.2003015

Abstract

Visual external costs are significant elements in the cost-benefit analysis of wind farm locations. This has been demonstrated well in the literature. However, in the assessment of the visual costs, a large share of the earlier studies used no or only simplistic visualizations of the visual impacts at stake. The cost estimates thus rely on the respondents’ ability to imagine the visual impacts associated with wind turbines of different sizes and at different locations. This has been argued to potentially reduce the [...]

1800 8742

Open Access Research Article

Grid Integration of a Residential PV-based Hybrid Renewable Energy System Using High-Frequency Multi-winding Transformer

Received: 13 June 2020;  Published: 05 August 2020;  doi: 10.21926/jept.2003014

Abstract

In this paper, a topology of a residential hybrid renewable energy system based on a high-frequency multi-winding transformer is introduced and analyzed. The system includes a PV and a wind-turbine as renewable energy sources, a battery as energy storage and their energies are integrated through a high-frequency transformer. In fact, the transformer integrates the energies in a magnetic form and also isolates the system inputs and outputs. The integrated output from renewables and battery is a DC high-voltage and i [...]

1823 10609

Open Access Research Article

Sustainability Implications of Using Hydrogen as an Automotive Fuel in Western Australia

Received: 29 June 2020;  Published: 31 July 2020;  doi: 10.21926/jept.2003013

Abstract

Hydrogen is regarded as a potential solution to address future energy demands and environmental protection challenges. This study assesses the triple bottom line (TBL) sustainability performance of hydrogen as an automotive fuel for Western Australia (WA) using a life cycle approach. Hydrogen is considered to be produced through water electrolysis. Two scenarios, current grid electricity and future renewable-based hydrogen, were compared with gasoline as a base case. The results show that locally produced grid elec [...]

1897 11315

Open Access Research Article

Seismic Imaging of Convective Geothermal Flow Systems to Increase Well Productivity

Received: 03 December 2019;  Published: 29 July 2020;  doi: 10.21926/jept.2003012

Abstract

A core feature of convective geothermal resource production is wellbore energy flow Q ~ ρC x T x V. E.g., for wellbore fluid of volume heat capacity ρC ~ 4.3MJ/m3.oC, temperature T ~ 230oC, and volumetric flow V ~ 50L/s, wellbore heat energy production is Q~ 50MWth ~ 5MWe. Wellbore fluid flow V =2πr0ϕv0ℓ for open wellbore length ℓ is given in turn by the spatially variable product crustal porosity times crustal fluid velocity v ≡ ϕv0 at the wellbore rad [...]

1872 12855

Open Access Original Research

A Simplified Optimization Model for Sizing Proton-Exchange Membrane Fuel Cells

Received: 03 June 2020;  Published: 24 July 2020;  doi: 10.21926/jept.2003011

Abstract

The fluctuations in the cost of energy coupled with the gradual decrease in natural resources (i.e., oil, natural gas, coal) and the environmental issues caused by the extensive use of fossil fuels, demand the urgent need for the development of advanced and clean energy systems. The European Union has requested new measures to target climate and energy deterioration by developing renewable energy sources by 2030. The stochastic character of the energy sources and the fluctuation in demand for the energy systems pos [...]

1914 10880

Open Access Original Research

Computational Micromechanics for the Optimization of Compression Strength of Unidirectional Carbon Fiber Composites for Use in Wind Turbine Blades

Received: 15 April 2020;  Published: 09 June 2020;  doi: 10.21926/jept.2002010

Abstract

As wind turbine blades grow longer, new design parameters gain additional importance such as blade weight, tip deflection and material cost. These parameters require designers to relook at carbon fiber as a potential design solution. However, the composite materials in wind turbine blades are subjected to significant compressive loading, and the compressive strength of carbon fiber reinforced polymer (CFRP) composites is much lower than its tensile strength. This reduction in compression strength is due to a change [...]

1628 9405

Open Access Review

Using Additives to Control the Decomposition Temperature of Sodium Borohydride

Received: 20 April 2020;  Published: 19 May 2020;  doi: 10.21926/jept.2002009

Abstract

Hydrogen (H2) shows great promise as zero-carbon emission fuel, but there are several challenges to overcome in regards to storage and transportation to make it a more universal energy solution. Gaseous hydrogen requires high pressures and large volume tanks while storage of liquid hydrogen requires cryogenic temperatures; neither option is ideal due to cost and the hazards involved. Storage in the solid state presents an attractive alternative, and can meet the U.S. Department of Energy (DOE) constraints to find m [...]

4015 18951

Open Access Original Research

The Impact of Operating Conditions on the Performance of a CH4 Dry Reforming Membrane Reactor for H2 Production

Received: 25 March 2020;  Published: 14 May 2020;  doi: 10.21926/jept.2002008

Abstract

Biogas is a promising resource for the production of H2 since it liberates energy by recycling waste, along with the reduction of CO2. In this paper, the biogas dry reforming membrane reactor is proposed to produce H2 for use in fuel cells. Pd/Cu alloy membrane is used to enhance the performance of the biogas dry reforming reactor. This study aims at understanding the effect of operating parameters such as feed ratio of sweep gas, pressure in the reactor, and reaction temperature on the performance of the biogas dr [...]

1750 10837

Open Access Original Research

Hierarchically-Structured Ti/TiO2 Electrode for Hydrogen Evolution Synthesized via 3D Printing and Anodization

Received: 09 April 2020;  Published: 09 May 2020;  doi: 10.21926/jept.2002007

Abstract

Hierarchically-structured, electro-catalysts consisting of a titanium core with controlled macro-porosity and a thin titania surface-layer with controlled nano-porosity were synthesized via combination of additive manufacturing and in-situ anodization. The electrodes were tested for hydrogen evolution reaction and depicted competitive electro-catalytic activities, with Tafel slopes between 40 and 56 mV dec-1. The electrodes also depicted competitive onset and over potentials when compared with other electrode alter [...]

1726 12451

Open Access Original Research

Assessment of Stability-Based Characterizations of North Carolina’s Offshore Wind Resource Using a Nested Boundary Layer Method

Received: 10 April 2020;  Published: 30 April 2020;  doi: 10.21926/jept.2002006

Abstract

SODAR wind profiler measurements from a land-based site within 1000 m of the coastal ocean are compared with predicted wind profiles based on upwind conditions and a stability-based model. The thermally dynamic influence of the Gulf Stream near the site of measurement, Cape Hatteras, has been found to complicate wind speed estimation at height through its impacts on atmospheric stability and the resulting changes to wind shear. The COARE 3.0 algorithm was used to calculate a Monin-Obukhov Similarity Theory (MOST) s [...]

1615 10104

Open Access Original Research

Storable Energy Production from Wind over Water

Received: 28 January 2020;  Published: 29 April 2020;  doi: 10.21926/jept.2002005

Abstract

The current status of a project is described which aims to demonstrate the technical and economic feasibility of converting the vast wind energy available over the globe’s oceans and lakes into storable energy. To this end, autonomous high-performance sailing ships are equipped with hydrokinetic turbines whose output is stored either in electric batteries or is fed into electrolysers to produce hydrogen which then is compressed and stored in tanks. In the present paper, the previous analytical studies which showed [...]

1813 10359

Open Access Original Research

Autonomous Hydrogen Production for Proton Exchange Membrane Fuel Cells PEMFC

Received: 04 March 2020;  Published: 28 April 2020;  doi: 10.21926/jept.2002004

Abstract

This paper focuses on hydrogen production for green mobility applications (other applications are currently under investigation). Firstly, a brief state of the art of hydrogen generation by hydrolysis with magnesium is shown. The hydrolysis performance of Magnesium powder ball–milled along with different additives (graphite and transition metals TM = Ni, Fe, and Al) is taken for comparison. The best performance was observed with Mg–10 wt.% g mixtures (95% of theoretical hydrogen generation yield in about 3 min). An [...]

2353 16148

Open Access Original Research

Water Photo-Oxidation Reaction on Clean and Doped Two-Dimensional Graphitic C2N

Received: 16 February 2020;  Published: 20 April 2020;  doi: 10.21926/jept.2002003

Abstract

In the search for new efficient photo-catalysts for hydrogen production through water splitting, the main attention has been paid to tuning the band gap width and its position with respect to vacuum level. However, actual electro-catalytic activity for the water oxidation reaction on a catalyst surface is no less important than those quantities. In this work we evaluate from first principles the thermodynamics of the reaction on relatively new candidates for water splitting: two-dimensional C2N and that doped with [...]

1704 9557

Open Access Original Research

Zero-Emission Geothermal Power Generation: Experimental Study on Carbonate Mineralization through CO2-Andesitic Pyroclastic Rock Interaction at Oku-Aizu Geothermal Plant

Received: 27 November 2019;  Published: 12 February 2020;  doi: 10.21926/jept.2001002

Abstract

In order to achieve advancement in zero-emission geothermal power generation for fixing the CO2 in the geothermal fluids to the carbonate minerals after binary power generation and reinjection of the fluid into the reservoir, batch-type experiments and geochemical simulations of CO2-andesitic pyroclastic rock interaction (tuff from Oku-Aizu geothermal area) were performed at 150 °C with and without CO2 gas for 15 days. Despite the low Ca content (0.9% wt.%) in the rock, the Ca2+ concentrations in the solutions [...]

3438 14421

Open Access Opinion

Electricity without Fuel

Received: 30 September 2019;  Published: 06 January 2020;  doi: 10.21926/jept.2001001

Abstract

Most power plants produce electricity by converting a mechanical motion into alternating current (AC). Photovoltaic solar panels convert an electromagnetic flux of light into direct current (DC). In general, electric energy can be harvested from a flux in the environment or from a change of the environment itself. One can produce electricity from mechanical, chemical, thermal, electromagnetic (light), or another physical flux, or from a change of temperature, chemical composition, or a physical field: gravitationa [...]

2112 28431

Open Access Original Research

Experimental Vapor-Pressures and Derived Thermodynamic Properties of Geothermal Fluids from Baden-Baden Geothermal Field (Southeastern Germany)

Received: 24 September 2019;  Published: 24 December 2019;  doi: 10.21926/jept.1904006

Abstract

Background: In the present study, vapor-pressures of three geothermal fluids from Baden-Baden geothermal field (Kirchenstollen, Friedrichstollen, and Murquelle, southeastern region of Germany) were measured over the temperature range of 274-413 K. The combined expanded uncertainty of the temperature and vapor-pressure measurements at 95% confidence level with a coverage factor of k = 2 were estimated to be 0.01 K and 1-3 Pa at low and 10-30 Pa at high temperatures, respectively. The measured values of vapor-pressur [...]

1940 11785

Open Access Research Article

Public Familiarity with Geothermal Energy on the North American West Coast

Received: 18 November 2019;  Published: 24 December 2019;  doi: 10.21926/jept.1904005

Abstract

The 2013 Pacific Coast Action Plan on Climate and Energy signed by the Governors of Oregon, California, and Washington and the Premier of British Columbia, launched a broadly announced public commitment to reduce greenhouse gas emissions through multiple strategies. Those strategies include the development and increased use of renewable energy sources. The initiative recognized that citizens are both a central component to abating greenhouse gas emissions with regard to their energy use behaviors, and are important [...]

1758 1697844

Open Access Review

Scientometric Analysis of Scheduling in Renewable Energy: A Keyword and Citation Analysis

Received: 21 May 2019;  Published: 15 November 2019;  doi: 10.21926/jept.1904004

Abstract

The aim of this paper is the scientometric analysis of articles on “scheduling in renewable energy” that have been published between 2000 and 2017. For this purpose, the terms “scheduling in renewable energy” and “unit commitment in renewable energy” have been searched. We have found 1009 articles in the Scopus database which include the terms mentioned above. VOSviewer and CiteSpace, as two well-known the scientometric analysis tools, have been used. Keywords analysis and citation analysis are two analysis methods [...]

1804 11378

Open Access Original Research

The Viterbo Hydrothermal System and Its Sustainable Exploitation, Central Italy

Received: 14 May 2019;  Published: 05 September 2019;  doi: 10.21926/jept.1903003

Abstract

Background: The Regione Lazio-Direzione Regionale dello Sviluppo Economico e delle Attività Produttive (RL–DRSEAP), carrying out its public functions to govern the use of mineral resources (including thermal water), planned the exploitation of the Viterbo hydrothermal system on the basis of a conceptual hydrogeological model (CHM). The CHMs of the Viterbo area and that of the neighboring Tuscany region, characterized by the same geological and hydrogeological setting, are discussed, suggesting the unreliability of [...]

1936 21037

Open Access Original Research

Sustainability Assessment of Power Generation from an Abandoned Oil and Gas Well in Alberta, Canada

Received: 30 May 2019;  Published: 07 August 2019;  doi: 10.21926/jept.1903002

Abstract

The main objective of this paper is to study the sustainability of power generation from an abandoned oil and gas well in the province of Alberta, Canada. Economic and environmental indicators were used for the sustainability assessment. A conceptual design for a pilot plant was developed, and the main parameters were determined. An abandoned oil and gas well represents the thermal power source through circulating water into an organic Rankine cycle (ORC) unit to generate electricity. The thermal power is extracted [...]

1788 12797

Open Access Original Research

A Techno-Economic Feasibility Analysis for the Production of Solar Photovoltaic Modules in Sudan

Received: 23 May 2019;  Published: 23 July 2019;  doi: 10.21926/jept.1903001

Abstract

This paper is intended to evaluate the economic viability of producing solar photovoltaic modules in Sudan. The simple payback period and the net present value were used as economic indicators to study comparatively different annual production capacities. Initial and operating costs were developed and analyzed for the product lifecycle. The number of working shifts in the base case is doubled to achieve a production rate of 20 MW/year and double shift with double quantity of machines is executed to reach a producti [...]

1901 14412

Open Access Editorial

Acupuncture in Gynecology and Assisted Reproduction – A Short Evidence-Based Review

Received: 08 December 2025;  Published: 09 December 2025;  doi: 10.21926/obm.icm.2504053

Abstract

Acupuncture has become an increasingly relevant complementary modality in modern gynecology and assisted reproduction. Its uses include the management of menstrual disorders, menopausal symptoms, infertility, polycystic ovary syndrome (PCOS), endometriosis, and others. Scientific progress in neurophysiology, laser acupuncture, and biomedical imaging has enabled a deeper understanding of the central and peripheral mechanisms underlying acupuncture’s effects. This editorial summarizes current evidence regarding physi [...]

54 253

Open Access Original Research

The Value of Camellia sinensis in the Management of Toxicity Induced by Cancer Treatments

Received: 17 June 2025;  Published: 02 December 2025;  doi: 10.21926/obm.icm.2504052

Abstract

While radiotherapy is one of the main treatments for head and neck cancer, adverse effects limit its effectiveness and affect patients' quality of life. Although various radioprotective substances have been proposed, comprehensive strategies are needed to modulate radiotoxicity. In this regard, compounds from green tea (Camellia sinensis), with antioxidant, anti-inflammatory, and antiproliferative properties, could be suitable for optimizing the radiotherapy relationship. A descriptive, prospective study was conduc [...]

80 495

Open Access Original Research

Effects of Trauma, Shame, and Self-Criticism on Hoarding: Comparative Data and Treatment Implications

Received: 31 January 2025;  Published: 01 December 2025;  doi: 10.21926/obm.icm.2504051

Abstract

Severe trauma has a significant impact on self-attitudes and emotions, such as self-criticism and shame, and psychological symptoms. This topic has been more well studied among populations with Trauma and Stress-Related Disorders, but examined to a lesser extent in other clinical populations where adverse life events and potentially traumatic events are highly prevalent, such as Hoarding Disorder. The current study examined trauma exposure, and the relationships between trauma, self-criticism, shame, and symptom se [...]

132 592

Open Access Perspective

From Vision to Strategy: Expanding Metaversal Integrative Healthcare with DAOs and Blockchain Ecosystems

Received: 26 May 2025;  Published: 26 November 2025;  doi: 10.21926/obm.icm.2504050

Abstract

Legacy, profit-driven organizational structures often lack the adaptability, equity, and innovation required for the evolving complexities of contemporary patient-centered care. They can limit access, constrain options, impose financial burdens, and hinder optimized delivery. Here, we propose a new architecture for metaversal integrative healthcare using decentralized autonomous organizations (DAOs). Blockchain technology and smart contracts underpin equitable, transparent, and resilient health ecosystems beyond in [...]

120 793

Open Access Editorial

And the ICMART Science Award 2025, Presented at the World Congress on Medical Acupuncture, Goes to…

Received: 10 November 2025;  Published: 10 November 2025;  doi: 10.21926/obm.icm.2504049

Abstract

During this year’s World Congress on Medical Acupuncture, the ICMART (International Council of Medical Acupuncture and Related Techniques) Science Award 2025 was presented in recognition of excellence in research and innovation within the field of medical acupuncture. The award honored pioneering work on acupuncture and moxibustion in chronic fatigue syndrome (CFS), conducted in collaboration with the team at Hubei University of Chinese Medicine, Wuhan. The study, a randomized controlled trial (RCT), showed that ac [...]

282 2694

Open Access Research Article

The Nociceptive Glio-Neural Complex as a Histoanatomical Substrate of Acupuncture Meridians?

Received: 11 November 2024;  Published: 09 November 2025;  doi: 10.21926/obm.icm.2504048

Abstract

Morphological evidence of peripheral glial cell involvement is lacking. Therefore, we investigated the presence of Schwann cells in acupuncture meridians. Eight legs of four unembalmed cadavers were used. Along the stomach meridian and a control meridian, quadrangular samples were taken from skin to the deep subcutaneous fascia and embedded in paraffin. 5 µm sections were stained for H&E and processed for immunolabeling using antibodies against S100 and NFP, respectively. In the stomach meridian, a large assembly o [...]

238 998

Open Access Review

Healthy Ageing and its Communal Nemesis Social Frailty

Received: 11 June 2025;  Published: 29 October 2025;  doi: 10.21926/obm.icm.2504047

Abstract

Across the globe, countries are facing an ageing boom, with the proportion of the older adult population growing compared to younger age groups because of increased life expectancy and declining birth rates. Along with the ageing boom, there is increased interest in the wellbeing of older adults. Healthy ageing and social frailty are two constructs that have emerged in studying older adults and their quality of life. In this paper, we critically review salient literature defining and describing healthy ageing and s [...]

394 1526

Open Access Original Research

Investigating Associations between Maternal Mindfulness, Mental Health, Interoception and Mother-Infant Relationship during Pregnancy and Post-Partum in a Non-Clinical Community Sample

Received: 21 May 2025;  Published: 26 October 2025;  doi: 10.21926/obm.icm.2504046

Abstract

Pregnancy and the postpartum period are times of significant transition for women, with changes in maternal physical and mental health. The relationship between a mother and her infant has been recognised as laying the foundation for later child development. There is considerable evidence that this early relationship is influenced by a woman’s wellbeing during pregnancy and in the early post-partum period. Mindfulness has been found to have positive health outcomes, primarily in reducing maternal stress, anxiety, a [...]

380 1695

Open Access Original Research

Cultural Distance, Host Acculturation Orientation, and Psychological Adaptation among African International Students at Portuguese Universities

Received: 10 July 2025;  Published: 24 October 2025;  doi: 10.21926/obm.icm.2504045

Abstract

International students represent a significant sojourner group. Increasing international student numbers makes it ever more relevant to understand the determinants of their psychological adaptation. This research investigates the question of how perceived cultural distance (PCD) impacts acculturation variables (social contact with host nationals and host national identity) and outcomes such as saudade and life satisfaction among African international students. The sample comprised 422 college students (195 from Ang [...]

212 1340

Open Access Editorial

Life Sciences Worldwide – Global Perspectives and Networking for International Professionals1

Received: 15 October 2025;  Published: 16 October 2025;  doi: 10.21926/obm.icm.2504044

Abstract

The International Exchange of Professionals – Thematic Event in Life Science, held on October 15-17, 2025, in Nice, France, inaugurated a global congress series focused on frontier topics in biomedical sciences. This editorial summarizes the first day of the event, including the opening ceremony, keynote forum, and welcome banquet. With more than 150 participants from over 35 countries, the event created a platform for cross-disciplinary exchange and collaboration. Key themes included translational medicine, neurom [...]

354 1782

Open Access Editorial

Transcutaneous Auricular Vagus Nerve Stimulation (taVNS): Precise Integration Between Neuroscience and Integrative Medicine

Received: 10 September 2025;  Published: 10 October 2025;  doi: 10.21926/obm.icm.2504043

Abstract

Transcutaneous auricular vagal nerve stimulation (taVNS) is a non-invasive method that regulates the autonomic nervous system via electrical stimulation of the auricular branch of the vagus nerve. Recent literature demonstrates that taVNS can decrease systemic inflammation, attenuate emotional disorders, modulate autonomic functions, and facilitate neural plasticity. This review examines the neurophysiological mechanisms of taVNS, including stimulation paradigms (short- and intensive, prolonged), and clinical findi [...]

1214 6153

Open Access Original Research

Mindful Attention and Awareness Prospectively Predicts Stress in Daily Life: A Multilevel Modeling Approach

Received: 17 June 2025;  Published: 09 October 2025;  doi: 10.21926/obm.icm.2504042

Abstract

Chronic stress increases a person’s vulnerability for physical and mental health conditions that take root in the “common soil” of inflammation. Dispositional, or trait, mindfulness has been identified as a protective factor against perceived stress. However, the theory that trait mindfulness can prospectively predict lower perceived stress in natural settings has yet to be thoroughly tested. The current study used a daily diary prospective design to observe perceived stress in response to difficult events. Partici [...]

234 1343

Open Access Original Research

Evaluation of the Transitional Pain Service Specialized Iyengar-Informed Yoga Program for Chronic Post-Surgical Pain: A Pilot Randomized Controlled Trial

Received: 29 April 2025;  Published: 30 September 2025;  doi: 10.21926/obm.icm.2503041

Abstract

The objective of this randomized controlled trial (RCT) was to evaluate the feasibility and efficacy of a specialized Iyengar-informed yoga intervention for individuals who experience chronic post-surgical pain (CPSP). This prospective, multi-wave pilot RCT was pre-registered at clinicaltrials.gov (NCT03460028) and designed in accordance with the 2010 CONSORT statement. Participants (N = 21) with CPSP were out-patients or community members affiliated with a Toronto hospital. Participants were randomized to an 8-wee [...]

453 1865

Open Access Editorial

World Federation of Acupuncture-Moxibustion Societies (WFAS)/Acupuncture Science Association Sweden (ASAS) 2025 International Congress – Personal Report1

Received: 24 September 2025;  Published: 25 September 2025;  doi: 10.21926/obm.icm.2503040

Abstract

This personal report summarizes the key experiences and insights gained from attending the 2025 International Symposium organized by the World Federation of Acupuncture-Moxibustion Societies (WFAS) and the Acupuncture Science Association of Sweden (ASAS), held in Stockholm. The event brought together international experts to explore recent advances in acupuncture research, clinical applications, education, and global integration. Despite notable challenges—including issues with AI-assisted real-time translation and [...]

605 3419

Open Access Research Article

A Randomized Control Trial of the Effects of a Hatha Yoga Program on Psychological Well-Being

Received: 11 March 2025;  Published: 23 September 2025;  doi: 10.21926/obm.icm.2503039

Abstract

Hatha yoga is a common style of yoga used for physical, emotional, mental, and spiritual benefits, enhancing quality of life and well-being. The current study used a randomized control trial (RCT) to investigate whether completing an eight-week posture-based Hatha yoga program would lead to greater psychological benefits than taking part in an eight-week lecture series about the history and philosophy of yoga. Fifty-five participants (42 female, age range 18-32) completed five self-report measures both before and a [...]

467 3746

Open Access Concept Paper

Toward a Unifying Transcultural Perspective on Illness, Health and Wellbeing: A Theoretical Proposition

Received: 04 March 2025;  Published: 11 September 2025;  doi: 10.21926/obm.icm.2503038

Abstract

This paper presents a unifying transcultural perspective on human illness, health and wellbeing by integrating insights from cognitive psychology, existential psychotherapy, Zen philosophy, Traditional Chinese Medicine (TCM), and quantum consciousness theory. Kahneman and Tversky’s work on heuristics and biases highlights cognitive constraints shaping decision-making, while Yalom’s existential therapy explores fundamental struggles with death, freedom, and meaning. Watts’ Zen philosophy critiques the illusion of eg [...]

455 2299

Open Access Perspective

Atimiaphobia: A Phenomenological Account of the Fear of Losing Honor or Being Labeled Shameless due to the Sexual Values Assigned to Femininity

Received: 30 May 2025;  Published: 10 September 2025;  doi: 10.21926/obm.icm.2503037

Abstract

Honor and shame function as moral currencies in many collectivistic cultures, shaping individual behavior, gender roles, and psychosocial well-being. This paper introduces Atimiaphobia—a newly proposed specific phobia defined as the intense and persistent fear of losing honor (particularly for men) or being labeled as shameless (particularly for women). Rooted in patriarchal, collectivist, and honor-based cultures, atimiaphobia manifests through intrusive thoughts, hypervigilance, emotional turmoil, and compu [...]

427 2687

Open Access Review

A Review on the Ethnomedicinal Plants Used in Zimbabwe for the Treatment and Management of Skin Conditions: Perspectives on Pharmacological and Toxicological Evaluation

Received: 05 March 2025;  Published: 19 August 2025;  doi: 10.21926/obm.icm.2503036

Abstract

Medicinal plants remain central to healthcare in Africa, where up to 80% of the population relies on traditional remedies to manage a range of health conditions, including skin ailments. In Zimbabwe, the country's rich biodiversity and favourable agroecological zones support a diverse range of ethnomedicinal plants. However, much of the knowledge surrounding these plants remains dispersed and scientifically under-evaluated. This review consolidates evidence from ethnobotanical surveys, peer-reviewed research, and g [...]

958 8530

Open Access Original Research

Treatment Choices and Healthcare Services Utilization Amongst Lumbosacral Radiculopathy Patients: Results from a Randomized Controlled Trial

Received: 06 January 2025;  Published: 07 August 2025;  doi: 10.21926/obm.icm.2503035

Abstract

Lumbosacral radicular pain (LRP) is a common sequelae of low back pain, the world’s leading cause of years lived with disability. LRP typically causes numbness, weakness, and tingling into the lower extremity and is associated with high rates of pain and impaired function. Despite its prevalence, there is significant heterogeneity among clinical practice guidelines for the treatment of LRP, which may contribute to poor patient outcomes. The aim of the present study was to identify treatments that participants [...]

1599 4369

Open Access Review

Exercise Training and Cardioprotection in Cardiovascular Disease: A Review of Mechanisms

Received: 27 November 2024;  Published: 05 August 2025;  doi: 10.21926/obm.icm.2503034

Abstract

Cardiovascular disease remains the leading cause of death worldwide, prompting extensive research into effective methods for treatment and prevention. Among these, exercise training and physical activity are widely recognized as the safest and most effective strategies for improving health. Specifically, exercise training has been explored for its role in cardioprotection, particularly in reducing damage caused by ischemia-reperfusion (I/R) injury and myocardial infarction (MI). Both high-intensity interval trainin [...]

427 3035

Open Access Perspective

Performance Art as Lifestyle: Art in Action for Health Promotion

Received: 11 May 2025;  Published: 28 July 2025;  doi: 10.21926/obm.icm.2503033

Abstract

Performance art is both a visual arts practice and kinaesthetic approach to place-based health. The perspective of this commentary is to promote the attributes of performance art to showcase its capacity to extend people into new configurations of cultural engagement with beneficial effects. Performance art is an opportunity to engage both mind and body in actions that transform predictability and encourage wellness within the context of people’s life studios (their everyday lives). Wellness is defined here in rela [...]

351 2551

Open Access Original Research

The Multiple, Embodied Positive Effects of a Community-Based Aerial Sling Class: Improved Body Schema, Fitness, Mental Health, and Diet

Received: 06 April 2025;  Published: 17 July 2025;  doi: 10.21926/obm.icm.2503032

Abstract

Contrary to the dominant ultra-cognitive approach in public health whereby only thought processes are supposed to link to action (e.g., physical activity) and health, in this research an embodied (body-mind unison) philosophy was examined by showcasing the importance of holistic and performative movement experiences to health and well-being. Specifically, the purpose of this study was to comprehensively examine the interrelated, multiple, and embodied benefits of a community-based aerial sling class (“Flow”) on bod [...]

564 3302

Open Access Review

An Exploration of the Psycho-Social Factors that Impact the Mental Wellbeing of Unaccompanied Asylum-Seeking Children in UK: A Narrative Review

Received: 23 January 2025;  Published: 17 July 2025;  doi: 10.21926/obm.icm.2503031

Abstract

Unaccompanied asylum-seeking children (UASC) are amongst the most vulnerable populations worldwide, facing significant psycho-social and mental health challenges influenced by pre-migration, migration, and post-migration experiences. This narrative review examines the structural, legal, and practical factors affecting UASC, focusing on their lived experiences within the UK’s asylum system. Key areas explored include trauma caused by forced migration (pre-, during and post-migration), ethical dilemmas surrounding ag [...]

336 3245

Open Access Editorial

Frank Bahr – A Life Dedicated to Energy Medicine-- In Memory of Prof. Dr. Frank Bahr (1944–2025)

Received: 07 July 2025;  Published: 10 July 2025;  doi: 10.21926/obm.icm.2503030

Abstract

With the passing of Prof. Dr. Frank Bahr, the field of complementary medicine has lost one of its most influential personalities. As a pioneer of auricular medicine in the German-speaking world, he helped shape the field of integrative medicine over many decades. This tribute by Prof. DDr. Gerhard Litscher honors Bahr's work, his convictions, and the legacy of a visionary whose impact on energy and spiritual medicine endures.

496 3345

Open Access Original Research

Exploring the Practice of One-to-One Therapeutic Viniyoga: A Qualitative Investigation Using Interpretative Phenomenological Analysis and Directed Content Analysis

Received: 07 April 2025;  Published: 03 July 2025;  doi: 10.21926/obm.icm.2503029

Abstract

Therapeutic Viniyoga is holistic and the treatment, starting point, progression, and goals are unique for each individual client. This study uses Interpretative Phenomenological Analysis (IPA) and directed content analysis, combining theory and application to offer a tangible, conceptually grounded window into the process and practice of one-to-one Therapeutic Viniyoga. How Viniyoga is applied therapeutically is explored through the lens of trained Viniyoga therapists. Fourteen Viniyoga therapists were interviewed, [...]

617 3990

Open Access Original Research

Intensive Cognitive Behavioral Therapy for School Avoidance among Youth with Anxiety Disorders or OCD in the COVID-19 Pandemic

Received: 27 January 2025;  Published: 26 June 2025;  doi: 10.21926/obm.icm.2502028

Abstract

School avoidance is associated with a range of negative outcomes and has been increasing in youth in the past several decades. This study examined the efficacy of an intensive outpatient CBT program, for youth (N = 137, ages 8-19) with anxiety disorders or obsessive-compulsive disorder (OCD) and compared both baseline symptoms and outcomes for youth with school avoidance compared to those without. At admission, results indicated that parents of children with school avoidance reported higher levels of family accommo [...]

477 3733

Open Access Research Article

In Silico Evaluation of Bioactive Compounds (Flavonoids, Rosmarinic Acid) from Five Plants (Rosemary, Oregano, Pink Savory, Lemon Balm, and Saffron) and Their Role in Cardiovascular Health and Hypertension

Received: 22 January 2025;  Published: 25 June 2025;  doi: 10.21926/obm.icm.2502027

Abstract

Cardiovascular diseases and hypertension represent significant global health challenges, driving the need for innovative therapeutic solutions. In this study, we employed advanced in silico methods to investigate the molecular properties of two bioactive compounds, Flavonoids and Rosmarinic Acid, extracted from five medicinal plants: Rosemary, Oregano, Pink Savory, Lemon Balm, and Saffron. The bioactive compounds were evaluated against key biological targets associated with hypertension and cardiovascular diseases, [...]

638 5420

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