by Han Zhang  and Joseph D. Smith

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

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 [...]

by Terence Seedsman

Received: 01 August 2021;  Published: 15 March 2022;  doi: 10.21926/obm.geriatr.2201195

While increases in life expectancy along with extended longevity can be seen as a success story, there remains the central issue surrounding the health and quality of life for increasing numbers of older people. As populations live longer the idea that older people should be empowered to remain active and productive citizens will be paramount. Questions concerning the meaningfulness, purpose and desirability of living longer present an existential challenge for all and sundry. It is clear, that the speed of populat [...]

by Yoshitaro Shindo  and Mazhar A. Kanak

Received: 29 March 2018;  Published: 22 June 2018;  doi: 10.21926/obm.transplant.1802013

Islet cell transplantation is a developing treatment for patients suffering from severe Type-1 diabetes. The long-term insulin independence after islet cell transplantation has been difficult to achieve, and this has been linked to several factors. One of the major cause of poor long-term outcome is inflammation surrounding the islets. Inflammation in islets is caused at several stages, donor induced, during organ preservation, islet isolation stress, peri-transplant inflammation or instant blood mediated inflammat [...]

by Xiang Li  , Yuan Xue  , Ryan Dehoff  , Costas Tsouris  and Patricia Taboada-Serrano

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

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 [...]

by Kristin Drexler  and Ed Boles

Received: 02 March 2024;  Published: 25 July 2024;  doi: 10.21926/aeer.2403017

Watershed health and integrity are essential to human and ecosystem health and well-being. New River watershed communities in northern Belize, Central America are vulnerable to annual ‘cultural eutrophication’ - natural eutrophication exacerbated by human activity. Human-caused pollution from agriculture, septic effluent, and industrial drainage, in combination with extended drought and the slow flow of New River, has caused more frequent and prolonged periods of eutrophication. In this qualitative study, 42 New Ri [...]

by H. Hakemi  , M. Khenkin  , R. Tamari  and D. Gal-Fuss

Received: 10 December 2019;  Published: 05 March 2020;  doi: 10.21926/rpm.2001006

In the present study, we report the experimental results related to the transient phenomenon, i.e., the time-dependent changes in the electro-optical properties of as-made polymer-dispersed liquid crystal (PDLC) films prepared by the UV-curing phase-separation method. This phenomenon occurs explicitly via polymer-induced phase separation when the matrix curing is not complete, some liquid crystal plasticized in the matrix, and some uncured pre-polymer components remain in the liquid crystal droplets. The outcome is [...]

by Jordi Faig Martí

Received: 04 October 2020;  Published: 30 December 2020;  doi: 10.21926/obm.neurobiol.2004076

Neurological tissue along with the cartilage remains one of the tissues that escapes human efforts of regeneration after injury. The human body, after an injury, can repair its tissues only to a certain extent that can help in recovering the function of organs. However, this is not the case in some organs, such as the brain and spinal cord. For a long time, basic medical science has been investigating the regeneration process that helps the human body, which is mainly through the pharmacological agents, proteins/ot [...]

by Igor Val Danilov

Received: 08 September 2024;  Published: 29 November 2024;  doi: 10.21926/obm.neurobiol.2404260

This narrative review of the literature on noninvasive brain stimulation techniques observes four neurostimulation domains: light therapy, photobiomodulation, a group of techniques within transcranial electric current and magnetic field stimulations, low-frequency sound stimulations, including vibroacoustic therapy, and rhythmic auditory stimulation. The review aims to determine whether or not different brain stimulation approaches rely upon a similar physicochemical sequence of actions. The study identifies releva [...]

by David J. Epstein  and Aruna K. Subramanian

Received: 18 November 2018;  Published: 12 February 2019;  doi: 10.21926/obm.transplant.1901048

Background: Tuberculosis (TB) is a common infection with challenges in diagnosis and treatment. Management of TB in solid organ transplant (SOT) candidates and recipients poses unique challenges not seen in other populations. Questions and Recommendations: Latent TB infection (LTBI) is important to diagnose pre-transplant through history, physical examination, imaging, and laboratory tests. Tuberculin skin tests and interferon-gamma release assays are important tools but not sufficiently sensitive nor specific to d [...]

by Bita Soleimani  , Ali Haghighi Asl  , Behnam Khoshandam  and Khadijeh Hooshyari

Received: 22 June 2024;  Published: 04 November 2024;  doi: 10.21926/rpm.2404025

The escalating global temperatures and their adverse effects underscore the growing imperative for the widespread adoption of clean fuels, notably hydrogen. Proton Exchange Membrane Fuel Cells (PEMFC) emerge as a pivotal green energy technology, facilitating electricity and water generation. The optimization of PEMFC efficiency hinges on the judicious selection and fabrication of polymer membranes. Within innovative materials, Zeolitic Imidazolate Frameworks (ZIFs) represent a novel subclass within the expansive fa [...]