by Georgia Savvidou  , Spyratou Ellas  and Efstathios P Efstathopoulos

Received: 23 April 2024;  Published: 29 August 2024;  doi: 10.21926/rpm.2403022

Nanotechnology is one of the most promising fields of study, and it represents a pioneering leap in science and technology by the precise control over materials at the atomic and molecular level. This transformation affects numerous aspects of modern human life, including medicine, healthcare, electronics, computing, and energy storage. Nanotechnology has shown significant advancements in managing various health problems through different nano-formulations. These engineered nano-systems can be used as drug delivery [...]

by Rachel Rutherford  and Patrick B Allen

Received: 25 February 2019;  Published: 12 August 2019;  doi: 10.21926/obm.hg.1903031

Crohn's Disease (CD) is a chronic inflammatory, relapsing and remitting condition that leads to structural damage of the bowel wall. It can be located in any part of the gastrointestinal tract with associated extra-intestinal manifestations. It varies in severity having many complications resulting in significant morbidity. In the past decade medical management of CD has evolved rapidly and with ongoing research it continues to show promising novel therapies. In this article we aim to give an overview of current li [...]

by Giuseppe Cocco  , Hans Peter Hofmann  and Stefano Pandolfi

Received: 27 December 2023;  Published: 11 March 2024;  doi: 10.21926/obm.geriatr.2401273

Heart failure is one of the major health threats in Western societies, and its prevalence is steadily increasing. Many data show the important impact of sex (biological) and gender (sociocultural) differences on most aspects (diagnosis, etiology, treatments, and outcomes) of heart failure. For example, compared to men, women with heart failure are older, have more co-morbidities, and develop different phenotypes of heart failure. Postpartum cardiopathy is unique in women. The iatrogenic effects of cancer therapies [...]

by Harnish P Patel  , Faidra Laskou  and Elaine M Dennison

Received: 15 February 2024;  Published: 23 January 2025;  doi: 10.21926/obm.geriatr.2501296

Sarcopenia is characterised by progressive and generalised decline in muscle strength, function, and muscle mass. Now recognised as a muscle disease, it is highly prevalent in older adults, with estimates of up to 30% in some populations. Sarcopenia has a complex multifactorial aetiology, including cellular and molecular changes, chronic disease, lower physical activity as well as nutritional deficiency. Sarcopenia is associated with a range of adverse physical and metabolic outcomes leading to disability, morbidit [...]

by Emad Fadhal

Received: 18 January 2024;  Published: 24 May 2024;  doi: 10.21926/obm.genet.2402236

The RAS signaling pathway is a crucial cell transduction pathway central to transmitting signals from outside the cell to the cell nucleus and influencing fundamental biological mechanisms like cell growth, division, and specialization. This signaling pathway has recently received much attention in scientific research because of its involvement in various diseases, especially carcinogenesis. Our study identified the significance of crucial proteins in the RAS signaling cascade in cancer development and progression. [...]

by Tara Hickey  , Sarah Strohmaier  , Ellie Fossey  and Charlie Heriot-Maitland

Received: 21 December 2023;  Published: 25 April 2024;  doi: 10.21926/obm.icm.2402023

In the compassion focused therapy (CFT) model of voice-hearing, a distressing relationship with voices is thought to be influenced by evolved threat-protection patterns, which are activated and attuned by socially threatening experiences, such as being harmed by others, as well being shamed, stigmatised, invalidated, and excluded. Therefore, the CFT approach is particularly interested in the role of voice-hearers’ relationships with others and self, as well as their social context of family/friends, professio [...]

by Mohammed Mustafa  , Salman Pervaiz  and Ibrahim Deiab

Received: 23 February 2024;  Published: 18 June 2024;  doi: 10.21926/rpm.2402013

This paper investigates the effect of rake angle, α, cutting edge radius, r, and feed rate, f, on the cutting force and cutting zone temperature during orthogonal dry cutting of Ti6Al4V. A numerical model representative of the 2D orthogonal cutting process is developed using ABAQUS/Explicit software. Johnson-Cook, (JC) constitutive material model is used to describe material plasticity. JC damage model and energy-based fracture criterion are used to describe damage initiation and evolution. Using Minitab-19 softwar [...]

by Elvira A. Guseinova  and Samira R. Safarova

Received: 28 July 2022;  Published: 26 October 2022;  doi: 10.21926/cr.2204037

In this study, we found that adding catalytic cracking feedstock, vacuum gas oil, and naphthenic acids in the amount of 0.005–0.0075% vol. increased the liquid target fractions, i.e., gasoline and light gas oil. The decrease in the yield of hydrocarbon gas at a practically constant degree of conversion of the raw material indicated a small proportion of the reactions of re-cracking of the resulting products. This also indicated the resource-saving nature of the process, allowing a larger amount of gasoline fraction [...]

by John Konstantaras  , Christos Pagkalos  , Maria K. Koukou  , Kostas Lymperis  , Yannis Caouris  and Michail Gr. Vrachopoulos

Received: 17 April 2022;  Published: 09 June 2022;  doi: 10.21926/jept.2202021

In this study, the performance of a self-sufficient controller used for a solar-latent heat domestic hot water (DHW) production unit under real-world operating conditions was analyzed. The unit consists of a flat-plate solar collector and a latent heat storage tank. The controller is powered by a small solar panel and governs the charging and discharging of the system, ensuring maximum solar energy absorption, desired hot water temperature, and constant monitoring of the heat-storage tank’s capacity. The system is [...]

by Mahdi Yousefi  , Scott Donne  , Shabnam Bahremand Abrasi  and Mohammad Yousefi

Received: 10 April 2023;  Published: 13 September 2023;  doi: 10.21926/jept.2303028

The thermal cracking of methane (TMC) is a significant reaction occurring above 850°C, which proceeds in two stages: non-isothermally and isothermally. However, most existing studies have focused on obtaining reaction rates under isothermal conditions [1], limiting their applicability to practical industrial reactor conditions. This novel research aims to determine the overall thermal decomposition rate of methane to hydrogen and carbon in adiabatic conditions, covering the range of unstable industrial reactor temp [...]