by Lara T. C. Mota  , Igor M. Figueredo  , F. Murilo T. Luna  , Rodrigo S. Vieira  , Célio L. Cavalcante Jr.  and M. Alexsandra S. Rios

Received: 26 September 2022;  Published: 22 December 2022;  doi: 10.21926/jept.2204042

In this study, the oxidative stability of the cottonseed oil biodiesel (CB) and soybean oil biodiesel (SB) was investigated by two methodologies, Rancimat and Differential Scanning Calorimetry (DSC), using samples fresh and aged (mid-term storage condition (100 days)). The biodiesel samples were synthesized by transesterification and characterized by specific mass, kinematic viscosity, acidity value, ester content, viscosity index, and peroxide value. The activation energy (Ea), Arrhenius pre-exponential factor (Z) [...]

by Tarik Wasfie  , Avery Jackson  , Cara Marie Brock  , Stefanija Galovska  and Jennifer Hille

Received: 07 November 2019;  Published: 13 November 2019;  doi: 10.21926/obm.geriatr.1904085

None.

by Deepti Singh Chalia  , Anil Khurana  , Mehul Trivedi  , Pinaken Trivedi  , Sarita Gola  and Parul Singh

Received: 20 February 2023;  Published: 28 June 2023;  doi: 10.21926/obm.icm.2302025

This retrospective data analysis study aims to analyze the data collected during adjunctive homeopathy treatment of COVID-19 patients by the Homoeopathic medical officers (HMO) in Gujarat state-dedicated COVID-19 hospitals (DCH) during the first wave of the pandemic. The HMOs used the standard data collection forms/sheets to record each patient's demographic information, clinical symptoms, homoeopathic management, and outcome data. Data of all cases hospitalized with COVID-19 of any age, and both genders were i [...]

by Andreea L. Seritan

Received: 26 November 2021;  Published: 24 January 2022;  doi: 10.21926/obm.geriatr.2201187

Older adults’ mental health needs significantly increased during the COVID-19 pandemic. Geriatric psychiatry is an area of extreme workforce shortage globally. A novel curriculum was developed to educate healthcare providers on COVID-19-related geriatric and geropsychiatry topics. Monthly lectures were presented from November 2020 to June 2021. Evaluations were collected after each lecture via an anonymous survey. Overall lecture quality and relevance for the participants’ clinical practices were rated on a 1-3 Lik [...]

by Brian C. Keller  , Sadia Z. Shah  and Amy Pope-Harman

Received: 24 April 2020;  Published: 15 June 2020;  doi: 10.21926/obm.transplant.2002113

Systemic capillary leak syndrome is a disorder characterized by recurrent, life-threatening episodes of acute capillary hyperpermeability resulting in edema and hypovolemic shock. We report a case of systemic capillary leak syndrome in a lung transplant recipient who developed recurrent episodes of volume overload, respiratory failure, and acute kidney injury in association with hypotension and hypoalbuminemia. Initiation of monthly high dose intravenous immunoglobulin prophylaxis effectively abrogated the syndrome [...]

by Louise O’Hare  and Robyn Griffiths

Received: 08 August 2022;  Published: 14 November 2022;  doi: 10.21926/obm.neurobiol.2204145

Although being one of the most common neurological disorders, migraine is commonly misunderstood and misdiagnosed. Current treatments rely on pharmacological approaches, which have been shown not to be effective for all, and so alternative, non-invasive treatments are being sought. Transcranial stimulation could be a possible treatment for migraine. Transcranial electrical stimulation generally involves applying a current to the cortex via the scalp. Whilst this has previously been mostly done in clinical settings, [...]

by Jeggathishwaran Panisilvam  , Peng Cheng Wang  and Hui An

Received: 26 March 2022;  Published: 13 July 2022;  doi: 10.21926/jept.2203024

Reducing and conserving fuel usage is pivotal for any engineering system for the development of a sustainable energy solution. Proton exchange membrane fuel cells (PEMFCs) are one of the promising renewable energy systems that consume hydrogen as their source of fuel to generate electricity. This paper investigate the necessity of the constant supply of fuel (hydrogen) in the PEMFC system to ensure stable operation. We propose that a dynamic supply of fuel could help achieve similar performance and reduce the amoun [...]

by Robert M. Sullivan  and John P. Hileman

Received: 15 November 2021;  Published: 22 February 2022;  doi: 10.21926/aeer.2201009

Our study sought to identify a regional explanation for declining fertility in stocks of co-occurring salmonids in the upper Trinity River, northern California, USA. We focused on evaluating the relationship between thermal variance in river water and hatchery-measured estimates of female fertility as a function of highly managed annual flow regimes. We evaluated annual and seasonal variation in volume of flow and water temperature in response to managed flows associated with annual in-river restoration actions. We [...]

by Rama Jaiswal  , Melad Shaikh  and Kalluri V. S. Ranganath

Received: 01 June 2023;  Published: 21 November 2023;  doi: 10.21926/cr.2304028

A surface modification approach has prepared a nanostructured organic framework connecting two metal oxide NPs. The surface modifier attached two metal oxide NPs via molecular interaction to generate modular structures of fiber, rod, or sponge materials. Thus, obtained hybrid systems have been confirmed through FT-IR, TGA, PXRD, and SEM. Metal oxides such as Fe3O4 and MgO generated mixed materials via the surface modification approach. Thus, obtained materials have been successfully used to dehydrate biomass-derive [...]

by Daming Zhang

Received: 21 January 2022;  Published: 07 March 2022;  doi: 10.21926/jept.2201008

In this paper, a method for operating AC microgrids in both off-grid or standalone and grid-connected modes is proposed to minimize the use of energy storage by increasing the number of PV panels and curtailing their output power. When the intensity of daylight decreases, power is imported from the main grid through an AC/DC/AC converter or solid-state transformers in parallel to compensate for the shortage. By using a three-phase transformer in Δ-Y connection with Y’s neutral connected to its local grounding syste [...]