by Ernest Ilisca

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

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 [...]

by Annelie K Gusdal  and Christine Gustafsson

Received: 09 November 2019;  Published: 07 April 2020;  doi: 10.21926/obm.geriatr.2002114

The people with dementia experience a progressive loss of cognition, while more than 90% of them develop behavioral and psychological symptoms of dementia (BPSD). BPSD may result in physical injuries and psychological distress among people with dementia and their family/caregivers. First-line care strategies in dementia care should not unthinkingly involve pharmacological interventions to avert or reduce the behavior, and should rather consider the person and their unique requirements. Therefore, a combination of p [...]

by Brooks M. Hybertson  , Bifeng Gao  and Joe M. McCord

Received: 21 September 2021;  Published: 10 January 2022;  doi: 10.21926/obm.icm.2201002

There has been a long history of human usage of the biologically-active phytochemicals in Salvia rosmarinus, Zingiber officinale, and Sophora japonica for health purposes, and we recently reported on a combination of those plant materials as the PB123 dietary supplement. In the present work we extended those studies to evaluate activation of the nuclear factor erythroid 2-related factor 2 (Nrf2) transcription factor and differential gene expression in cultured HepG2 (hepatocellular carcinoma) cells treated with PB1 [...]

by Livia Maria Surdi  , Maribel Dagher  , Tamara Merhej  , John Choi  and Jamil R. Azzi

Received: 17 April 2025;  Published: 10 September 2025;  doi: 10.21926/obm.transplant.2503258

Antibody-mediated rejection (ABMR) remains a major barrier to long-term graft survival in kidney transplantation. Defined by the presence of donor-specific antibodies (DSAs) and characteristic histological changes, such as C4d deposition in peritubular capillaries, ABMR can present acutely, chronically, or subclinically, often manifesting as graft dysfunction. Recent advances in genomic profiling and diagnostic assays have improved our understanding of its pathophysiology, yet therapeutic strategies remain limited. [...]

by Robert Resta

Received: 22 June 2021;  Published: 01 September 2021;  doi: 10.21926/obm.genet.2103136

The goals of prenatal testing remain controversial and reflect competing interests of public health, patient rights, disability activists, scholars, feminist critics, commercial laboratories, judiciary/legislative trends, and medical science. This paper reviews and critiques the most common justifications of prenatal testing for fetal aneuploidy that have been put forth over the half century of its existence: reducing the medical and economic burden to society of genetic disease through selective abortion, allowing [...]

by Asaad G Ishak  , Sundar V Cherukuri  , GianCarlo Diaz  and Richard McCallum

Received: 25 January 2021;  Published: 02 July 2021;  doi: 10.21926/obm.geriatr.2103174

Dysphagia, or difficulty swallowing, is a common condition, especially among the elderly population and can become debilitating. As we age, there are subtle changes in esophageal motility, but by no means is dysphagia ever considered to be a normal result of aging. Dysphagia usually presents with a variety of accompanying symptoms ranging from regurgitation during meals, mild discomfort, to severe chest pain. It can be challenging to localize the dysphagia from the history. The underlying etiology may become eviden [...]

by Natalia V. Kovaleva  and Philip D. Cotter

Received: 02 May 2022;  Published: 05 September 2022;  doi: 10.21926/obm.genet.2203162

Mosaicism for trisomy of chromosome 14 (T14) is a very rare chromosomal disease in liveborn patients. Since the 1970s, when the first patients with mosaicism for T14 were reported, a number of studies on the clinical manifestations of this abnormality have been published. No information on epidemiological parameters was known except for the rarity of the disease and its predominance among female carriers. This was the first systematic review of published cases of mosaic T14 that addressed some epidemiological aspec [...]

by JeongChul HEO  and Sumi HAN

Received: 15 June 2022;  Published: 08 October 2022;  doi: 10.21926/obm.neurobiol.2204141

This study aimed to verify whether self-directed learning readiness (SDLR) level can be significantly predicted by the literacy of learning management system (LLMS), motivation, and feedback interaction (FI) in non–face-to-face educational settings. We performed Pearson’s correlation analysis and multiple regression analysis. A total of 206 online college students responded to this web survey using simple random sampling. Results showed that three variables (LLMS, motivation, and FI) were positively associated with [...]

by Preetam Datta  and Subhasis Roy

Received: 15 April 2023;  Published: 05 July 2023;  doi: 10.21926/cr.2303020

With increasing population levels and rapidly growing industries worldwide, the purification of water contaminated with different impurities is one of the biggest challenges we face in recent times. Photocatalysis holds great potential as an efficient mineralization process to remove the foreign matter present in wastewater. Rapid advancement in innovative materials development has made photocatalysis the frontrunner among different water treatment methods. Our main priority lies in different strategic approaches t [...]

by Em V. Adams  , Brandi M. Crowe  , Jasmine Vanadore  , Marieke Van Puymbroeck  and Arlene A. Schmid

Received: 06 February 2022;  Published: 22 April 2022;  doi: 10.21926/obm.icm.2202020

The purpose of this descriptive survey was to explore how, and for what purpose, health care practitioners use yoga in clinical practice. A survey was administered to professionals who identified as healthcare practitioners who used yoga in their practice. There were 205 completed responses from a combination of healthcare practitioners including occupational therapists, physical therapists, yoga therapists, recreational therapists, speech-language pathologists, and mental health counselors. Practitioners worked in [...]