Table of Content

Open Access Original Research

Influence of Teachers’ Secondary Traumatic Symptoms on Their Burnout, Compassion Fatigue, and Intentions to Resign in Low Socioeconomic Status Schools

Received: 09 September 2024;  Published: 24 March 2025;  doi: 10.21926/obm.icm.2501016

Abstract

The current study explored the adverse outcomes of secondary traumatic symptoms experienced by secondary school teachers on their compassion fatigue, burnout, sense of satisfaction, and intention to resign from the teaching profession in low SES schools in the United States context. The study was inspired by Ludick and Figley’s Compassion Fatigue and Resilience model and Figley’s work on Compassion Fatigue. A non-experimental design was employed, and data were gathered from a random sample of 131 teache [...]

1387 8608

Open Access Short Review

Personal Observations on the Critical and Unusual Role of Palladium Environment on Reaction Pathways

Received: 10 October 2019;  Published: 08 January 2020;  doi: 10.21926/acr.2001003

Abstract

This article summarizes some surprising palladoreactions occurring in a transition metal environment, discovered by our team, and the proposed corresponding mechanisms.

1441 8596

Open Access Original Research

Oral Management in Pre-HSCT Patients: An Evaluation of Oral and Systemic Complications

Received: 14 June 2019;  Published: 21 October 2019;  doi: 10.21926/obm.transplant.1904088

Abstract

Objective: Hematopoietic stem cells transplant (HSCT) requires being preceded by chemotherapy and radiotherapy. The neutropenia and thrombocytopenia which follows may be the possible cause of post-transplant complications. It is required that the patient undergoing transplantation is eradicated of any possible infectious focus. Currently, a uniform protocol for the oral management of these patients is unavailable. Methods: The approach for the dental management of each patient was designed as a more selective proto [...]

1740 8594

Open Access Case Report

Case of Lung Transplantation in a Recipient with Emphysema: Importance of Determining Alpha 1-Antitrypsin Deficiency Status for Lung Transplantation

Received: 18 April 2018;  Published: 16 July 2018;  doi: 10.21926/obm.transplant.1803015

Abstract

Here we present a case of a lung transplant recipient with alpha 1-antitrypsin deficiency as well as conducted a retrospective review of the United Network for Organ Sharing (UNOS) database from 1990 – 2016 specifically grouping patients with alpha-1 antitrypsin deficiency (A1ATD) and chronic obstructive pulmonary disease (COPD).

1434 8593

Open Access Research Article

Phenotypic Characterization of Advanced Breeding Lines of Rice (Oryza sativa L.) for Drought and Low Phosphorus Stress Tolerance

Received: 02 August 2024;  Published: 01 November 2024;  doi: 10.21926/obm.genet.2404270

Abstract

Drought and phosphorus (P) deficiency stress are two significant natural abiotic stresses restricting rice growth and yield worldwide. Developing rice varieties tolerant to drought and low P stress is crucial for sustainable agricultural production. To address these issues, two separate experiments were conducted using selected advanced rice breeding lines to study the impact of drought and low P stress on yield-attributing traits. The first experiment evaluated the drought stress tolerance of five advanced lines ( [...]

1381 8590

Open Access Communication

Linking Population and Forest Dynamics over the Conterminous US for the 1990s and 2000s

Received: 24 September 2020;  Published: 09 March 2021;  doi: 10.21926/aeer.2101003

Abstract

Few studies have investigated deforestation and population connections in the U.S. at large spatial extents or small scales. We examined forest cover changes over two decades, 1990-2000 and 2000-2010, in the continental U.S. at the county scale. Forest dynamics were estimated using the National Land Cover Database, a satellite-derived classification product and then linked to population data from the US. Census. At the aggregate level, high population growth seems to increase net forest loss in a non-linear manner, [...]

1237 8574

Open Access Editorial

MOF-based Heterogeneous Catalysis: A Frontier in Sustainable Chemical Transformations

Received: 02 December 2024;  Published: 05 December 2024;  doi: 10.21926/cr.2404014

1552 8572

Open Access Editorial

Welcoming the “Metaverse” in Integrative and Complementary Medicine: Introductory Overview

Received: 17 October 2023;  Published: 25 October 2023;  doi: 10.21926/obm.icm.2304046

Abstract

The digital transformation of healthcare is accelerating. At the forefront of this revolution is the development of the "metaverse." This multidimensional digital universe, where virtual and physical realities converge, is reshaping the potential of integrative and complementary medicine. In this special edition journal series, we explore how metaverse technologies such as virtual reality, augmented reality, avatars, digital twins, blockchain smart contracts, and more, are poised to revolutionize holistic healthcar [...]

1726 8569

Open Access Editorial

Three Inspiring Review Articles on Photobiomodulation: Update 2021

Received: 18 May 2021;  Published: 20 May 2021;  doi: 10.21926/obm.icm.2102018

Abstract

Photobiomodulation (PBM) is an accurate term for an effective and important application of light in medicine (such as in photomedicine). Three review articles of authors from the International Society of Medical Laser Applications (ISLA-Transcontinental) on the topic of PBM with a total of 116 printed pages, published in one renowned journal of molecular sciences with an impact factor of 13.668, are presented in the current review. The main topics are PBM, probiotics, curcumin, and arthritis. PBM can modulate cellu [...]

1818 8562

Open Access Original Research

Probabilistic Modeling of Cyber-Physical Microgrid Systems to Evaluate the Reliability and Resiliency Implications of Cyber Attacks

Received: 02 April 2024;  Published: 07 August 2024;  doi: 10.21926/jept.2403015

Abstract

The integration of cyber and physical layer of the grid has not only introduced a microscopic spectacle to observe and ensure the efficient flow of electricity but has also exposed the interdependencies of the network. These cyber-physical interdependencies are often exploited in the form of cyber-attacks that can disable a grid introducing substantial financial losses and observable social repercussions. Thus, it is important to address the impending Achilles heel by devising pragmatic approaches to comprehensibly [...]

1498 8560

Open Access Original Research

Haplo-Insufficiency or Knockout of the Serotonin Transporter Does not Affect Heroin Self-Administration but Decreases BDNF in the Frontal Cortex

Received: 01 February 2018;  Published: 07 June 2018;  doi: 10.21926/obm.neurobiol.1802010

Abstract

(1) Background: Drug addiction places a heavy burden on those affected by it but only a small percentage of individuals (~20%), regardless of their drug of abuse, go on to develop the compulsive behaviours that define drug addiction. Clinical studies have shown that genetic variations that reduce serotonin transporter (SERT) activity increase the vulnerability to developing a variety of psychiatric disorders such as depression, anxiety and drug addiction. (2) Methods: To investigate the influence of reduced SERT fu [...]

1504 8557

Open Access Review

Poly ε-Caprolactone Scaffolds: Advancements in Bone Regeneration and Grafting

Received: 20 October 2024;  Published: 02 April 2025;  doi: 10.21926/obm.transplant.2502245

Abstract

In orthopedics and oncology, benign and malignant bone lesions pose significant clinical challenges. Malignant tumors, like osteosarcomas and multiple myeloma, pose substantial health dangers and can spread common and mostly non-life-threatening benign lesions, including non-sizing fibromas and unicameral bone cysts. Treatment plans for bone lesions may involve radiation, chemotherapy, and surgical excision, depending on their type. Combining stem cell research, bioactive materials, and advanced scaffold design, cu [...]

1045 8555

Open Access Interview

An Interview with Dr. Koh Iwasaki

Received: 01 July 2022;  Published: 03 July 2022;  doi: 10.21926/obm.geriatr.2203201

1114 8546

Open Access Review

Piperine: A Savor Inducer and a Cancer Reducer

Received: 26 July 2021;  Published: 15 September 2021;  doi: 10.21926/obm.hg.2103061

Abstract

Spices have been used for many decades, and although new and improved culinary spices have been developed, black pepper (Piper nigrum) continues to retain its distinguished title as the “King of spices” due to its particular pungent taste. An alkaloid called piperine is the main component in black pepper that, besides generating the well-known taste, imparts well-documented immunomodulatory, anti-inflammatory, antimicrobial, antioxidant, and even anti-cancer properties; these properties have led to rigorous researc [...]

1087 8545

Open Access Original Research

How Involvement in COVID-19-Related Work Changed Nurses' Job Demands, Job Resources, and Their Associations with Burnout: Evidence from China 1

Received: 09 January 2023;  Published: 27 March 2023;  doi: 10.21926/obm.neurobiol.2301164

Abstract

China adopted a “Zero-COVID” policy for nearly three years, making Chinese healthcare workers constantly involved in COVID-19-related work. However, little is known about how involvement in COVID-19-related work shaped Chinese nurses’ burnout. This study explores how nurses’ job demands and job resources are associated with their burnout by considering high and low frequent involvements in COVID-19-related work in China. This study employed a cross-sessional design. Guided by Job Demands-Resources (JDR) model, we d [...]

1285 8545

Open Access Research Article

Aspiration of Gastrointestinal Material and Induction of Fibronectin Expression in Lung Transplant Recipients: Implications for Early Airway Remodeling

Received: 29 November 2018;  Published: 20 February 2019;  doi: 10.21926/obm.transplant.1901051

Abstract

Background: Gastroesophageal reflux disease has been associated with the development of chronic lung allograft dysfunction following lung transplantation. While the mechanisms are unclear, it is postulated that microaspiration of gastrointestinal material (GIM) leads to inflammation and airway remodeling that culminates in obliterative bronchiolitis. As the expression of the matrix glycoprotein fibronectin has been shown to be an early marker of this fibroproliferative process, its induction could suggest a causal [...]

1425 8537

Open Access Original Research

Left Atrial Systolic Force in Hypertensive Patients with Left Ventricular Hypertrophy: A Predictor of Incident Atrial Fibrillation. The LIFE Study

Received: 20 December 2021;  Published: 09 March 2022;  doi: 10.21926/obm.geriatr.2201194

Abstract

It remains unknown whether left atrial systolic force (LASF), a measure of left atrial function, can be used as a predictor of new-onset atrial fibrillation (NOAF). Furthermore, the effect of the treatment with atenolol and losartan on LASF is unclear. A total of 758 patients without atrial fibrillation at baseline were enrolled from the Losartan Intervention For Endpoint (LIFE) reduction in hypertension echocardiography sub-study. Participants of the LIFE study were randomized to either atenolol-or losartan-based [...]

1339 8533

Open Access Review

Gastro-Esophageal Reflux in the Newborn: Pathologic Event or Does Spit Happen?

Received: 19 April 2021;  Published: 13 August 2021;  doi: 10.21926/obm.hg.2103060

Abstract

Infants admitted to Neonatal Intensive Care Units (NICUs) are among the most vulnerable patients in medicine and are at risk for a variety of morbidities, many of which require pharmacologic therapy. Gastroesophageal Reflux Disease (GERD) is a common diagnosis in the NICU patient population and may or may not represent a truly pathologic process. Regardless, pharmacologic therapy is provided to many infants, who are already exposed to an inordinate number of pharmacologic agents, of which most are off label and hav [...]

1198 8531

Open Access Review

Rejuvenating the Skin: The Role of Macro and Microalgae in Preventing Aging

Received: 26 January 2025;  Published: 17 April 2025;  doi: 10.21926/obm.geriatr.2502308

Abstract

The increasing consumer demand for cosmetic products has led to the widespread use of synthetic substances, which are inexpensive and readily available but can sometimes harm the skin and body. Examples include hydroxybenzoic acid esters (parabens) and phthalates, which are considered endocrine disruptors, and synthetic fragrances that may cause irritation or allergies. Consequently, there has been a shift in consumer preferences towards natural cosmetic products. In response to this demand and the expanding market [...]

977 8530

Open Access Original Research

Modeling CO2 and N2 Permeation through Mixed Matrix Membranes Containing Oxygenated Carbon Nanotubes Dispersed in Polysulfone

Received: 09 May 2022;  Published: 16 August 2022;  doi: 10.21926/aeer.2203030

Abstract

Mixed matrix membranes (MMMs) consist of a polymeric phase and a dispersed solid filler such as zeolites or carbon nanotubes. We prepared symmetric and asymmetric polysulfone-based MMMs containing functionalized multi-walled carbon nanotubes (MWNT-O) for CO2/N2 separation. Maxwell’s model was used to predict the permeabilities of MMMs. The permeability achieved using the model exhibited a good fit of the model in symmetric MMMs, especially for CO2. This can be potentially attributed to the high affinity of th [...]

1795 8526

Open Access Original Research

The Nexus between Energy Poverty and Environmental Change in Zimbabwe

Received: 20 June 2024;  Published: 01 January 2025;  doi: 10.21926/aeer.2501001

Abstract

Over the years, energy poverty has been seen as a major struggle in Zimbabwe and globally. This paper tries to find the relationship between energy poverty and environmental change. Ecological footprint represents a degradation in this paper. The findings showed an insignificant relationship between renewable energy and ecological footprint in Zimbabwe. This study employs the ARDL technique. This study employs time series data from 1990-2021. This study uses the ARDL framework to get robust results. The ARDL bound [...]

1585 8517

Open Access Technical Note

Encoding, Regression, and Classification of Transcription Factors’ Specificity and Methylation Effects

Received: 01 February 2021;  Published: 16 August 2021;  doi: 10.21926/obm.genet.2103134

Abstract

The methylation effects on protein-DNA interactions, which can be perceived as a special kind of specificity of transcription factors, have been successfully quantified in the last years by various methods. In this work, I give a summary about the sequence encoding scheme, the underlying additive model about specificity and methylation sensitivity, and the regression strategy to analyze Methyl-Spec-seq data. Then I explain why given the current experimental setup, it is more appropriate to model the methylation eff [...]

1757 8503

Open Access Editorial

The Fundamental Challenges in Organ Transplantation

Received: 20 December 2017;  Published: 24 December 2017;  doi: 10.21926/obm.transplant.1704006

1500 8495

Open Access Original Research

Maternal Coping Mechanism and Its Associated Factors Following Perinatal Loss in Hospitals of Wolaita Zone, South Ethiopia 2021

Received: 08 December 2022;  Published: 12 February 2023;  doi: 10.21926/obm.neurobiol.2301154

Abstract

Perinatal loss is the most painful and unanticipated experience for those who conceived and it is a major global concern worldwide, especially in developed countries like Ethiopia. Women who lost their pregnancy are believed to be at higher risk of developing severe grief following a loss. To reduce the risk of complications after perinatal loss, healthcare providers need to appreciate the grieving process and identify grief factors in mothers for early copying and to be managed promptly by providing adequate emoti [...]

1328 8491

Open Access Short Communication

Mental Health among the Elderly in Nepal: Special Emphasis on Depression

Received: 21 December 2023;  Published: 08 February 2024;  doi: 10.21926/obm.geriatr.2401268

Abstract

This paper discusses the impact of Depression on the aging population. It also tries to explore the psychosocial risk factors and burden associated with geriatric depression in low-and-middle-income (LAMI) countries. Nepal, a South Asian developing country, is resource-poor and research-naïve. Research, in general, and mental health studies, in particular, are the least prioritized in this country. The lack of culturally adapted psychiatric inventories is one of the possible reasons for the low number of mental hea [...]

1360 8490

Open Access Original Research

Predictive Factors of Response to Mindfulness-Based Cognitive Therapy (Mbct) for Patients with Depressive Symptoms: The Machine Learning’s Point of View

Received: 23 August 2022;  Published: 28 December 2022;  doi: 10.21926/obm.icm.2204058

Abstract

While there is abundant literature on the benefits of Mindfulness-Based Interventions (MBI), data about factors associated with their Efficiency are scarce. Our study attempts to determine the moderators of efficacy and adherence in Mindfulness-Based Cognitive Therapy (MBCT) with a machine learning analysis. Seventy-six psychiatric outpatients at “university hospital mental health service” had a prescription for MBCT from their referring psychiatrist. They suffer from various psychiatric illnesses with [...]

1262 8487

Open Access Original Research

The Induction of Histone H3K4 Methylation on the SI Gene Correlates with SI mRNA Levels in Enterocyte-Like Caco-2 Cells

Received: 18 December 2017;  Published: 30 October 2018;  doi: 10.21926/obm.genet.1804046

Abstract

Background: Histone modifications, including acetylation and H3 lysine 4 (K4) methylation, are thought to be associated with transcriptional activation during differentiation. Methods: mRNA and histone modifications around the sucrase-isomaltase (SI) gene in Caco-2 cells (a small intestine cell line) during differentiation were determined by qRT-PCR and chromatin immunoprecipitation, respectively. Results: Mono-, di-, and tri-methylation of histone H3K4 on the SI gene correlated with the induction of SI gene expres [...]

1798 8483

Open Access Editorial

Acknowledgement to Reviewers of Journal of Energy and Power Technology in 2021

Received: 05 January 2022;  Published: 06 January 2022;  doi: 10.21926/jept.2201001

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 2021. 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 [...]

1336 8483

Open Access Review

Complex Pathology of Cardiac Syncope in Old Patients

Received: 07 February 2022;  Published: 16 June 2022;  doi: 10.21926/obm.geriatr.2202200

Abstract

Syncope is characterized by a transient and rapid loss of consciousness for a short duration, with full spontaneous recovery within minutes. Syncope causes up to 2% of all emergency medical consultations. The incidence of syncope is similar in men and women, is higher in old patients (slightly higher in old women). The prevalence of syncope is up to 23% for the institutionalized elderly. In elderly patients, syncope often presents atypically, such as with falls; these patients might also have difficulty recalling e [...]

1091 8482

Open Access Editorial

Challenges of Organ Transplantation in COVID-19 Era

Received: 01 November 2020;  Published: 19 November 2020;  doi: 10.21926/obm.transplant.2004126

1565 8482

Open Access Original Research

The Role of General Medicine in the Evaluation of Frailty in the Elderly Population: Definition of a Standardized Instrument for the Correct Framing of Frailty and Comparison with Currently Existing Instruments for Stratification of Clinical Risk

Received: 08 September 2021;  Published: 04 March 2022;  doi: 10.21926/obm.geriatr.2201192

Abstract

Frailty is a chronic condition that increases the vulnerability to stressogenic factors and prevents the patient from returning to the preceding condition of homeostasis. This increases the risk of negative outcomes and progressively brings the patient toward disability, leading to higher use of healthcare resources. Clinical risk stratification systems can generally be useful for identifying frail patients from the standpoint of a healthcare system, though General Practitioners (GPs) assume a key and irreplaceable [...]

1445 8478

Open Access Original Research

Risk and Protective Factors for Poorer Overall Health, Increased Psychological Distress, and Suicidal Ideation Due to SARS-CoV-2 outbreak in the General Japanese Population

Received: 28 December 2020;  Published: 12 March 2021;  doi: 10.21926/obm.icm.2101008

Abstract

Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) outbreak is expected to have harmed the mental health of numerous people worldwide. Therefore, the present study was aimed to explore the effects of the SARS-CoV-2 outbreak on the overall health of the general Japanese population, with a particular focus on identifying the factors associated with a requirement for mental health treatment. Japanese residents aged 18 years and above were surveyed online, and among the 1,500 obtained responses included for a [...]

1801 8473

Open Access Original Research

Molecular Study on Y Chromosome Microdeletion in Male Infertility: A Cross-Sectional Design in Indonesian Men

Received: 09 October 2023;  Published: 27 February 2024;  doi: 10.21926/obm.genet.2401216

Abstract

Y chromosome microdeletions (YCMs) are one kind of genetic disorder that contributes to male infertility. This study aims to determine the profile of YCMs in the infertile male population in Indonesia. This cross-sectional study was conducted by identifying YCMs testing data on 49 infertile male patients identified with azoospermia and oligoasthenoteratozoospermia (OAT) based on their sperm analysis, who visited andrology polyclinics in several hospitals in Yogyakarta Province between March 2021 to August 2022. Stu [...]

1240 8468

Open Access Original Research

Neuroprotective Effects and Cognitive Enhancement of Allomargaritarine in 5xFAD Alzheimer's Disease Mice Model

Received: 23 August 2023;  Published: 09 January 2024;  doi: 10.21926/obm.neurobiol.2401207

Abstract

Here, we report the results of an investigation of the neuroprotective effects of securinine with tryptamine conjugate-allomargaritarine (2b), previously selected as the leading compound among a wide range of natural derivatives. 2b was synthesized from securinine using various Lewis acids as catalysts. In addition to the antioxidant and cytoprotective properties previously shown for 2b, in this work, in vitro analysis of the biological activity of the compound demonstrated that this conjugate is also able to influ [...]

1492 8463

Open Access Case Report

Case Report of a Severe Presentation of Anti-Contactin-1 Nodopathy

Received: 15 November 2022;  Published: 08 May 2023;  doi: 10.21926/obm.neurobiol.2302168

Abstract

A 46-year-old, previously healthy woman presented via telemedicine with 14 months of progressive asymmetrical weakness, numbness, paresthesias and tremors. History and clinical exam findings suggested a peripheral etiology resembling a variant CIDP presentation. Electrodiagnostic testing identified only one motor nerve with signs of demyelination; the remainder of motor and sensory nerves were unable to be evoked. MRI showed diffuse enhancement of the trigeminal nerve and cauda equina. CSF revealed albuminocytologi [...]

1243 8462

Open Access Review

The Concerted Action of Multiple Mechanisms to Induce and Sustain Transplant Tolerance

Received: 25 September 2018;  Published: 09 November 2018;  doi: 10.21926/obm.transplant.1804025

Abstract

Transplant tolerance has been achieved in experimental models using immune intervention strategies. Yet, their clinical translation remains unsuccessful and requires further optimization of immunotherapeutic regimens based on a deeper understanding of the cellular and molecular mechanisms at play in the induction and maintenance phases of immune tolerance. Intensive investigations have shed light on the tolerogenic networks underlying graft survival and have unraveled their complexity, which may depend on several p [...]

1438 8461

Open Access Research Article

Impact of Pt-Ni Nanoparticle Architecture on Electrocatalytic Oxidation Reaction in Fuel Cells

Received: 04 September 2023;  Published: 16 November 2023;  doi: 10.21926/cr.2304027

Abstract

This paper investigates how the aggregation of bimetallic nanoparticles (NPs) influences the electronic condition of the surface adsorption site and, hence, the performance of materials during the electrooxidation of fuels in an alkaline medium. First, we synthesized Pt-Ni NPs in three configurations: ordered intermetallic, ordinary alloy, and core-shell. The NPs contained Pt and Ni close to a 1:1 Pt/Ni atomic ratio. They had similar particle sizes, which allowed us to evaluate their performance without the influen [...]

1634 8452

Open Access Concept Paper

Induction into Browning’s Strategy: Suggestions for Family Therapy

Received: 11 April 2022;  Published: 25 July 2022;  doi: 10.21926/obm.icm.2203029

Abstract

The authors attempted to operationalize the clinical work of strategic theorist and expert family therapist, Scott Browning. Strategic therapy takes the position that a client is stuck, not necessarily sick. This focus encourages the clinician to create alternative perspectives such that a client learns to consider a problem from a new lens. Milton Erickson, a progenitor of strategic thinking, used hypnosis and paradox to nudge clients toward a useful alternative perspective [1]. The present article examined three [...]

1360 8450

Open Access Review

Cell based Therapy in Transplantation

Received: 10 October 2018;  Published: 13 December 2018;  doi: 10.21926/obm.transplant.1804031

Abstract

One of the major hurdles still facing the field of transplantation is the management of immunosuppression and the morbidity that results from treatment. Due to toxicity and complications from a maintenance immunosuppression therapies, a necessary improvement in post-transplant immunosuppressive therapies must be the development of a low-side effect therapy. Cell-based therapies as an emerging candidate offer a novel approach to generating graft tolerance, and when utilized within a combination therapeutic strategy, [...]

1493 8446

Open Access Perspective

Organisational and Emotional Psychology Views on Yozan Uesugi’s Leadership

Received: 09 January 2024;  Published: 27 June 2024;  doi: 10.21926/obm.icm.2402036

Abstract

Yozan Uesugi was a Daimyo (feudal lord) who governed an area called Yonezawa in Yamagata Prefecture, Japan from 1767 to 1823. Yonezawa was originally an impoverished provincial government which under his leadership regained a healthy financial status. His leadership style was unique among Daimyos, yet respected and regarded as an ideal by many including President John F. Kennedy. One of the characteristics of Yozan’s leadership was he demonstrated what he expected his people to do, instead of just telling them what [...]

1098 8438

Open Access Research Article

Physical Characterization of Solar Thermal Energy Storage (TES) Materials for Solar Dryers: Case of Volcanic Stone (Pozzolan) in Chad

Received: 25 March 2024;  Published: 01 August 2024;  doi: 10.21926/jept.2403014

Abstract

Many sensible heat storage materials are regularly used as thermal energy storage (TES) systems to improve the efficiency of solar dryers. The present work focuses on the effects of the volume and particle sizes of a volcanic stone (pozzolan) for the same purpose. Samples soaked in matt black and without soaking were also considered. Heat charge and discharge tests were carried out by exposing the pozzolan contained in a solar collector of the direct solar dryer (DSD) and indirect solar dryer (ISD) to the sun. Char [...]

1753 8436

Open Access Editorial

Pancreatic Islet Transplantation: State of the Art and Future Perspectives

Received: 08 April 2019;  Published: 15 April 2019;  doi: 10.21926/obm.transplant.1902062

Abstract

Pancreatic islet transplantation represents an effective therapy with lower morbidity for patients carriers of type 1 diabetes compared to whole pancreas transplantation. Although complete insulin independence is usually not achieved it allows control of glycemia balance reducing the risk of severe hypoglycaemia events and impaired awareness of hypoglycaemia. Recent trials had demonstrated islet transplantation to be more effective than current medical treatment and improvements in outcomes also have been reported [...]

1575 8434

Open Access Original Research

Nonlinear Optimal Control for Six-Phase Induction Generator-Based Renewable Energy Systems

Received: 07 December 2022;  Published: 11 May 2023;  doi: 10.21926/jept.2302018

Abstract

The article aims at optimizing six-phase induction generator-based renewable energy systems (6-phase IGs or dual star induction generators) through a novel nonlinear optimal control method. Six-phase induction generators appear to be advantageous compared to three-phase synchronous or asynchronous power generators, in terms of fault tolerance and improved power generation rates. The dynamic model of the six-phase induction generator is first written in a nonlinear and multivariable state-space form. It is proven th [...]

1236 8432

Open Access Editorial

COVID-19 Lockdown in Wuhan: Heart Rate Variability in Females and Males – A Pilot Study

Received: 14 March 2021;  Published: 15 March 2021;  doi: 10.21926/obm.icm.2101009

Abstract

In a pioneer transcontinental pilot study conducted with 50 volunteers, it was revealed that women could have apparently overcome the world's toughest lockdown in terms of changes in the general state of health measured using the heart rate variability parameter better than men. The results of the present study obtained in Wuhan provide information on the initial trend in this regard.

1856 8430

Open Access Short Communication

Targeted MRI (tMRI) of Small Increases in the T1 of Normal Appearing White Matter in Mild Traumatic Brain Injury (mTBI) Using a Divided Subtracted Inversion Recovery (dSIR) Sequence

Received: 30 June 2023;  Published: 14 December 2023;  doi: 10.21926/obm.neurobiol.2304201

Abstract

In modelling studies targeted MRI (tMRI) of small increases in the T1 of tissues using divided Subtracted Inversion Recovery (dSIR) sequences show ten or more times the contrast seen with conventional IR sequences. This may be particularly useful in imaging normal appearing white matter where there may be small changes in T1 and/or T2 in disease but these changes may be insufficient to produce useful contrast with conventional T2-weighted spin echo (T2-wSE) and T2-FLuid Attenuated Inversion Recovery (T2-FLAIR) sequ [...]

1480 8429

Open Access Review

The Autotaxin - Lysophosphatidic Acid Axis as a Novel Therapeutic Target for Liver Fibrosis

Received: 27 March 2019;  Published: 21 June 2019;  doi: 10.21926/obm.hg.1902024

Abstract

Chronic liver diseases affects millions of people worldwide each year. Upon chronic liver injury, a wound healing process ensues, leading to the accumulation of extracellular matrix (ECM) proteins. If the injury persists, this leads to liver fibrosis with excessive scarring of the liver and loss of liver function. Lysophosphatidic acid (LPA), a signaling molecule has shown to be involved in various biological processes, including wound healing process. Elevated plasma levels of LPA and its catalyst autotaxin (ATX), [...]

1514 8427

Open Access Original Research

Heavy Metal Concentration and Health Risk Assessment of Selected Fruits Sold in Jos Metropolis

Received: 27 February 2021;  Published: 12 May 2021;  doi: 10.21926/acr.2102013

Abstract

The present study investigated the level of heavy metals in selected fruits sold commonly in Jos, Nigeria. The fresh fruits (Avocado pear, Black currant, Egg Plant, Golden melon, and Soursop) were purchased from five major markets (Terminus, Farin Gada, Building materials, Bukuru, and Fobur) in Jos. Each fruit sample was collected in triplicate and analyzed using standard procedures. The concentration of heavy metals (Fe, Cu, As, Cd, Zn, Pb, Mn, and Cr) was determined using Graphite Furnace Atomic Absorption Spectr [...]

1475 8425

Open Access Communication

Appropriate Vancomycin Use and Incidence of Vancomycin-Resistant Enterococci in Liver Transplant Recipients

Received: 24 July 2020;  Published: 09 November 2020;  doi: 10.21926/obm.transplant.2004122

Abstract

Liver transplant recipients (LTRs) are at risk for vancomycin-resistant Enterococcus (VRE) infections which can lead to significant morbidity or mortality. Antibiotic exposure, including vancomycin, is associated with greater risk of VRE infection. This study aimed to assess the appropriateness of vancomycin use and rates of VRE infection in this population. We performed a retrospective cohort study of 327 patients who underwent liver transplantation at our center from January 1, 2012 to June 30, 2017. Sixty (18.3% [...]

1372 8422

Open Access Editorial

Compassion in Clinical Care

Received: 01 March 2019;  Published: 04 March 2019;  doi: 10.21926/obm.icm.1901016

Abstract

Compassion in Clinical Care

1893 8421

Open Access Original Research

Improving Confidence in Dementia Care by Helping Care Staff Articulate Skills They Already Possess: The Value of the Communication and Interaction Training (CAIT) Programme

Received: 14 August 2022;  Published: 18 January 2023;  doi: 10.21926/obm.geriatr.2301222

Abstract

This article discusses the findings from a training programme called ‘Communication and Interaction Training’ (CAIT). CAIT was designed to improve the confidence of carers in their use of communication skills with people living with dementia, particularly when managing behavioural agitation. This pre/post assessment study employed a mixed design, and showed positive effects in terms of quantitative and qualitative features. The participants were mainly from a specialist team who were experienced in managing episode [...]

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