by Anilkumar Mettu  , Ninad Loke  , Vilas Patil  , Rahul Panday  and Sreenivasarao Gajula

Received: 10 January 2022;  Published: 19 July 2022;  doi: 10.21926/cr.2203021

In this study, we present selective hydrocracking of poly (di and tri) aromatic compounds to monoaromatics, such as benzene, toluene, and xylenes (BTX), over a mixture of Pt/Al2O3 and Y zeolites. The polyaromatic compounds feed is a combined simulated model feed, which is similar to light cycle oil (LCO) in composition. The feed is processed in a fixed bed reactor over a catalyst mixture: in the first step, selective hydrogenation of di and tri-aromatic compounds occurs in the presence of Pt/Al2O3 catalyst, followe [...]

by Kristin Shrader-Frechette

Received: 09 February 2022;  Published: 17 August 2022;  doi: 10.21926/aeer.2203031

Many multinational retail companies are exposed to financial risk related to climate change. Carbon management is important in keeping global temperature increases below 1.5°C to prevent the exacerbated impacts of climate change. Auchan Retail in Auchan Holding provides a good example of carbon management in the retail sector. Auchan Retail's major emissions are the indirect emissions throughout their value chain (scope 3 emissions). The total estimated emission of scopes 1, 2 and 3 are 37,822,573.9 t CO2e. [...]

by Feliciano Villar  , Montserrat Celdrán  , Rodrigo Serrat  and Valentina Cannella

Received: 07 November 2018;  Published: 26 December 2018;  doi: 10.21926/obm.geriatr.1804027

Active aging is a concept used to describe and promote lifestyles that contribute to a healthy aging process. However, these lifestyles vary widely, and the concept of active aging encompasses many activities. This paper considers two axes to classify the range of activities that can contribute to active aging: the resources needed to carry out such activities (low and high-resource needs) and the main orientation of the activities (self-oriented vs. activity with others). To illustrate this classification, three t [...]

by Mahyar Vefaghi  , Hediyeh Rezaei Sedehi  and Omid Ashkani

Received: 09 April 2025;  Published: 03 August 2025;  doi: 10.21926/rpm.2503012

Nowadays, the development of advanced processors plays a key role in the progress of humanity and the discovery of new sciences, and quantum computers play an essential role in this regard. In this regard, the development of new generation processors is necessary for the development of quantum computers. Quantum diamonds, with their astonishing properties, especially the presence of nitrogen-vacancy (NV) centers in their crystalline structure, are among the most advanced emerging technologies in the field of quantu [...]

by Kate M. Waldie  and Sriram Katipamula

Received: 31 December 2021;  Published: 22 February 2022;  doi: 10.21926/cr.2201006

Fuel cells based on renewable synthetic fuels are promising alternatives to fossil fuel combustion for efficient electricity production. Much focus has been placed on hydrogen as a chemical fuel, but being a flammable gas, there are challenges with its safe handling. Formic acid is an attractive liquid fuel for use in direct formic acid or formate fuel cells, and it can in principle be produced from the thermal or electrochemical reduction of carbon dioxide. Over the past ten years, advances have been made in the d [...]

by Horst J. Koch

Received: 06 August 2019;  Published: 04 December 2019;  doi: 10.21926/obm.geriatr.1904091

The prevalence of Late-life Depression (LLD) has been estimated between 10% and 15%. Therefore, it is a considerable worldwide problem. The psychopathology is not substantially different from that of depressive episodes in young adults but somatic complaints in combination with end-of-life perspective leave an imprint on emotional experience. The frequent suicidal tendency, especially in old unmated men, remains a particular challenge. It is important to combine psychiatric and somatic diagnostics using modern meth [...]

by June An  and Young Nam Chun

Received: 30 October 2021;  Published: 01 December 2021;  doi: 10.21926/aeer.2104031

Renewable energies such as solar or wind energy are highly unreliable, owing to uncertain energy intensity and discontinuity. This shortcoming could be overcome by converting renewable energies to a form such as chemical fuel storage. In the present study, we created an energy conversion system that uses microwave heating and a carbon receptor to transform CO2, a greenhouse gas, into CO chemical fuel. The parametric investigation found that increasing the gasification temperature and feed gas temperature decreased [...]

by Minato Nakamura  and Yoshinori Murakami

Received: 17 August 2021;  Published: 13 September 2021;  doi: 10.21926/cr.2103002

The photocatalytic reaction involved in TiO2 photocatalysis was investigated using a microreactor coated with TiO2 film on the glass plate attached on one side of the microreactor. It was confirmed that the effect of H2O2 on the photocatalytic degradation efficiency of azo dyes (acid orange 7, acid red 151, and acid yellow 23) was dependent on the polymorphs (anatase and rutile) of TiO2 coated on the glass plate of the UV-irradiated microreactor. Scavengers of holes (KI) and electrons (p-benzoquinone) were added to [...]

by Jai Jai Shiva Shankar  , Adil Bata  and Namita Sinha

Received: 07 August 2018;  Published: 25 October 2018;  doi: 10.21926/obm.neurobiol.1804013

(1) Background: Current imaging standard for detecting and assessing glioblastoma multiforme (GBM) progression depends on contrast-enhancement on brain magnetic resonance imaging (MRI). Isolated foci of diffusion restriction have been observed to precede enhancement in GBM. The aim of our study was to investigate the frequency of isolated diffusion restriction that precede corresponding enhancement and to investigate the association between isolated diffusion restriction and survival in patients with GBM. (2) Metho [...]

by Demelza Emmerton  , Samra Khan  , Joanne Conway  , Daniel Mosby  and Ahmed H. Abdelhafiz

Received: 31 May 2020;  Published: 10 July 2020;  doi: 10.21926/obm.geriatr.2003127

With life-expectancy rising globally, the prevalence of ageing, comorbidity and frailty is likely to increase especially in the low and middle income countries. The emergence of the new COVID-19 pandemic has been concentrated in this group of patients and has led to worse outcomes compared to younger and less comorbid populations. This group of patients is at an increased risk of multi-organ consequences of systemic disease. Therefore, systemic assessment of these patients from the outset and optimisation of their [...]