by Vsévolod Mymrin  , Reinaldo H. G. Alarcon  , Marilia A. Guidolin  , Kirill Alekseev  , Rogerio J. Hultmann  , Walderson Klitzke  , Karina Q. Carvalho  , Fernando H. Passig  , Charles W.I. Haminiuk  and Rodrigo E. Catai

Received: 08 December 2022;  Published: 27 February 2023;  doi: 10.21926/cr.2301009

Methanol synthesis catalyst (MSC) waste was applied as the principal component (till 70 wt.%) of sustainable ceramics in composites with bauxite processing waste (RM), and waste foundry sand (FS). The results of the initial components' chemical interaction studies by a complex of methods (XRD, SEM/EDS/mapping, AAS and LAMMA) during heating demonstrated the synthesis of amorphous glasslike new formation, their filling of pores and compaction of the ceramic’s structure. In this case, a strong chemical and mechanical [...]

by Tammy Lennox  and Angela Kennedy

Received: 08 February 2022;  Published: 20 July 2023;  doi: 10.21926/obm.icm.2303030

The current article describes the application of the Compassion Focussed (CF) formulation to the interaction between individuals and their social context. The standard CF formulation [1] would see the person’s fears as inadvertently reinforced by their attempts to cope with the underlying issue. However, sometimes such attempts to cope can also reinforce the fears of another person or party. Interpersonal CF formulations could provide a compassionate, non-blaming way of enlightening people in their interactions to [...]

by Mariusz KSIĄŻEK

Received: 24 March 2021;  Published: 15 June 2021;  doi: 10.21926/rpm.2102024

Metal parts of endoprosthesis have a detrimental effect on the bones that come into contact with them and on the entire body of the patient. Coating them with biocompatible layers (hydroxyapatite and bioglass) has not yet brought about permanent results. In this study, the author showed the possibility of using a binder containing sulfur waste for this purpose. The sulfur binder is used industrially in electrical engineering and construction applications. The chemical properties of elemental sulfur indicate that it [...]

by Sami Badwan  , Elizabeth Bailey  and James M. Harper

Received: 09 November 2022;  Published: 07 March 2023;  doi: 10.21926/obm.geriatr.2301226

In the 1950’s Denham Harman proposed the Free Radical Theory of Aging whereby species lifespan and individual longevities are the consequence of free radical driven damage to biomolecules. This led to decades of research to ascertain the effect of altered antioxidant defense systems on aging and mortality in an array of species using reverse genetics and dietary manipulation. Within invertebrates, the data generally support the Free Radical Theory in that overexpression of antioxidant enzymes or dietary supplementa [...]

by C. Shawn Sun  , Nahid Farzana  , Dinesha Kuruppuarachchi  , Mohammadamin Azimi  and Huayuan Zhong

Received: 10 September 2022;  Published: 04 May 2023;  doi: 10.21926/rpm.2302019

Infrastructure degradation attributable to concrete deterioration and corrosion of reinforcing steel has been a long-standing challenge to the owners and engineers. This problem becomes more evident when concrete structures are subject to aggressively corrosive environments. The use of advanced materials such as ultra-high performance concrete (UHPC) and carbon fiber reinforced polymer (CFRP) bars has a strong potential to overcome this challenge and help build new infrastructure that is durable and sustainable. Ho [...]

by Abdulmaleek Sado  , Rahul Kalla  and Simon Campbell

Received: 20 May 2019;  Published: 14 August 2019;  doi: 10.21926/obm.hg.1903032

Crohn's disease is part of a group of diseases termed inflammatory bowel disease. Guidelines have long advocated the use of steroids for acute flare up and Current goals of treatment include enhancing long-lasting remission, preventing relapse, reducing the need for surgery, preventing complications and slowing disease progression. No cure currently exists for the disease. Traditionally, the clinical approach to treatment has been symptom-based where patients have had to ‘earn’ their next treatment escalation. Howe [...]

by Oswaldo Núñez  , Mohammad Fereidooni  , Victor Márquez  , Duangthip Sattayamuk  , Piyasan Praserthdam  and Supareak Praserthdam

Received: 25 August 2023;  Published: 05 December 2023;  doi: 10.21926/cr.2304029

To improve CH4 and H2 formation from CO2 photoreduction using non-organic, non-laborious, and inexpensive photocatalysts, we have prepared two surface-silicate-modified TiO2 catalysts: P25-SiO2 and AmTiO2-SiO2 (amorphous TiO2) to be tested in water and using UV light. The last catalyst produces more CH4 and H2 in water than P25 (3:1 TiO2 anatase: rutile) under UV light irradiation of HCO3- and CO2; am-TiO2-SiO2 at pH = 7, produces 8 times more CH4 and H2 than P25 with selectivity at the reactor headspace of 30% and [...]

by Emma Larsen  , Simon Ghanat  and Scott Curtis

Received: 11 February 2022;  Published: 07 May 2022;  doi: 10.21926/aeer.2202020

The urban heat island (UHI) effect is not well understood, especially within the cityscape. This editorial is from the perspective of an undergraduate student Cadet Emma Larsen, as she comes to understand the UHI through mentorship from professors Simon Ghanat and Scott Curtis, personal experiences as a cadet at a military academy in Charleston, SC, USA, and active learning through participation in a national heat observation campaign, the NOAA HeatWatch, and related independent research. HeatWatch seeks to underst [...]

by Rie Sasaki  , Hiroto Ito  and Masami Okamoto

Received: 01 March 2022;  Published: 14 June 2022;  doi: 10.21926/obm.genet.2202155

In this study, we examined the effect of a combination of surface topographies (fiber alignments) and different stiffness of poly(L-lactic acid) (PLLA) substrates on the direct relationship between anti-cancer drug (CDDP) sensitivity for MDA-MB-231 cells and mesenchymal properties under both normal and hypoxic conditions. In addition, we studied the induction of epithelial–mesenchymal transition (EMT). The CDDP treatment under hypoxia indicated poor adhesion of MDA-MB-231 cells as well as significant repression of [...]

by Krzysztof Wierzcholski

Received: 08 October 2020;  Published: 02 June 2021;  doi: 10.21926/rpm.2102023

This paper aims to highlight the result of a new progression of mathematical estimation methods of stochastic bio-hydrodynamic lubrication parameters for arbitrary, curvilinear, non-rotational, co-operating, living biological surfaces coated with phospholipid bi-layers. Movable, non-rotational, co-operating surfaces occur in various biological friction nods like the collar bone, the blade bone, the jump joint, and the wrist joint. Specifically, the author presents a synthetic and comprehensive estimation of stochas [...]