by Samuel Cruz-Manzo

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

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 [...]

by Yash Aryan  and Anil Kumar Dikshit

Received: 26 July 2022;  Published: 09 November 2022;  doi: 10.21926/jept.2204035

Electric vehicles are becoming popular among consumers while BS-VI norms have been introduced and mandated for conventional vehicles in India. In the present study, the environmental impacts from the use phase of electric two-wheeler (EV) and gasoline two-wheeler (GV) have been evaluated and compared using the life cycle assessment (LCA) perspective. The functional unit adopted was 1000 km driven by one vehicle under Indian road and traffic conditions. CML 2001 and ReCiPe 2016 methods were used for the assessment u [...]

by Subhomita Ghosh Roy

Received: 09 November 2022;  Published: 16 December 2022;  doi: 10.21926/aeer.2204052

With the increasing human population, the protection of water resources is becoming a critical issue. Wetlands are one of the most important water resources, helping assimilate pollutants. Hence, the ecosystem integrity of wetlands is important. Plant bioindicators with phytoremediation (physiologically removing pollutants from the ecosystem by plants) capacity can be very helpful in this regard. Based on the current literature, this study specifically aims to overview plant bioindicators with phytoremediation abil [...]

by Pal S. Mangat  , Shahriar Abubakri  , Konstantinos Grigoriadis  and Vincenzo Starinieri

Received: 24 June 2021;  Published: 09 October 2021;  doi: 10.21926/rpm.2104040

Microwave curing of repair patches provides an energy efficient technique for rapid concrete repair. It has serious economic potential due to time and energy saving especially for repairs in cold weather which can cause work stoppages. However, the high temperatures resulting from the combination of microwave exposure and accelerated hydration of cementitious repair materials need to be investigated to prevent potential durability problems in concrete patch repairs. This paper investigates the time and magnitude of [...]

by Myrto Poulou  and Maria Tzetis

Received: 31 July 2017;  Published: 01 November 2017;  doi: 10.21926/obm.genet.1704010

Cystic Fibrosis (CF) is one of the commonest autosomal recessive genetic diseases that show a high carrier frequency amongst Caucasian populations. Although there has been tremendous progress in the available therapies, compared to the past, the disease is still associated with significant morbidity and mortality. Because of the severe clinical manifestations and the shortened life expectancy of patients, population based carrier screening, to identify heterozygous carrier couples at risk of having affected childre [...]

by Katarzyna Grubel  , Ji Su  , Jotheeswari Kothandaraman  , Kriston Brooks  , Gabor A. Somorjai  and Tom Autrey

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

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 [...]

by Andrew C. Chien  , Eric Y. Lin  and Nicole J. Ye

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

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 [...]

by Salem Dehom  , Synnove Knutsen  , David Shavlik  , Khaled Bahjri  , Hatem Ali  , Lance Pompe  and Rhonda Spencer-Hwang

Received: 11 August 2019;  Published: 17 December 2019;  doi: 10.21926/obm.transplant.1904095

Background: Substantial evidence has established links between air pollution and increased risks of overall morbidity and mortality, especially for respiratory and cardiovascular diseases. However, little research has explored these relationships among highly sensitive populations, such as renal transplant recipients. Despite the improvement in quality of life after renal transplantation, cardiovascular diseases (CVD) are major causes of graft loss and mortality. The present study was designed to assess the associa [...]

by Lucille Marchand  , Donna Lewin  and Leila Kozak

Received: 02 October 2020;  Published: 22 February 2021;  doi: 10.21926/obm.icm.2101007

Both palliative care (PC) and integrative medicine (IM) focus on the whole person to optimize wellbeing. Integrative palliative care combines the best of both approaches in relieving the distressing symptoms of serious illness and its treatment by combining evidence informed, pharmacological and nonpharmacological modalities that are aligned with the person’s goals, values and preferences. Healing is valued, as well as symptom relief, shared decisionmaking, person empowerment, compassionate care, and nurturing of h [...]

by Emory Ryan  , Tiffany Jong  and Ellen Sidransky

Received: 20 July 2022;  Published: 26 September 2022;  doi: 10.21926/obm.genet.2203165

Gaucher disease (GD) is one of the most common lysosomal storage disorders resulting from biallelic mutations in the GBA1 gene, causing a dysfunction of the lysosomal hydrolase, glucocerebrosidase (acid-β-glucosidase; E.C 3.2.1.45). Clinical manifestations are heterogenous and can include splenomegaly, anemia, and neurological impairments in the case of neuronopathic Gaucher disease types 2 and 3. Newborn screening, arguably the most important public health initiative to date, has been regularly conducted on n [...]