by Despina Vamvuka  , Maria Deli  and Antonios Stratakis

Received: 06 September 2021;  Published: 11 November 2021;  doi: 10.21926/jept.2104047

In this work, the conducted chemical, mineralogical, fusibility, and thermogravimetric analyses and calculated the slagging/fouling indicators for predicting deposition tendencies in boilers to study the ash fusibility behavior of selected agricultural residues and their blends with lignite. Two additives, bauxite, and clinochlore, were used at varying amounts to reduce ash melting, followed by examining their anti-fusion mechanisms. Initial deformation and softening temperatures of biomass materials were low for c [...]

by Antusia dos Santos Barbosa  and Meiry Gláucia Freire Rodrigues

Received: 24 October 2023;  Published: 28 January 2024;  doi: 10.21926/cr.2401002

The research describes a sustainable approach for the synthesis of zeolite NaA using kaolin as an alternative source of silica. The main objective of this research was to prepare NaA zeolite using metakaolin derived from kaolin from the state of Rio Grande do Norte, Brazil, as an alternative source of silica, reducing the production cost and evaluating its thermal stability. In addition, a study of the thermal stability of the zeolite and cost estimates for zeolite production were carried out. Traditional methods o [...]

by Navya Uppu  , Kelly McMahen  , Tasneem Khasru  and Mark A. DeCoster

Received: 02 August 2022;  Published: 17 October 2022;  doi: 10.21926/rpm.2204020

Green synthesis of nanomaterials endeavors to reduce the use of high energy methods with those that may include lower temperatures and pressures, use of natural products, and bottom-up self-assembly. Here we describe the generation of metal-organic biohybrids (MOBs) with nanoscale features synthesized at physiological (37°C) and room temperature (25°C). These MOBs utilized the naturally occurring amino acid dimer cystine as the biological component, and a series of metals, including copper, silver, and cobalt. The [...]

by Subhomita Ghosh Roy

Received: 09 November 2022;  Published: 16 December 2022;  doi: 10.21926/aeer.2204052

With the increasing human population, the protection of water resources is becoming a critical issue. Wetlands are one of the most important water resources, helping assimilate pollutants. Hence, the ecosystem integrity of wetlands is important. Plant bioindicators with phytoremediation (physiologically removing pollutants from the ecosystem by plants) capacity can be very helpful in this regard. Based on the current literature, this study specifically aims to overview plant bioindicators with phytoremediation abil [...]

by Rui Wang  , Omar M. Basha  , Husain E. Ashkanani  , Bingyun Li  and Badie I. Morsi

Received: 19 August 2024;  Published: 21 November 2024;  doi: 10.21926/jept.2404022

CO2 capture processes using five chemical solvents were modeled in Aspen Plus V.12.1 for the capture of over 90% CO2 from a 456 ton/hour split flue gas stream containing 12.02 mol% CO2 emitted by the Longview 780 MW power plant (West Virginia, USA). Since the flue gas contained 33.10 ppmv SO2 and 35.47 ppmv NO2, a gas polishing process, using deionized water (DIW), was included in the model for complete scrubbing of SO2 and NO2 from the raw flue gas before the CO2 capture process. The five chemicals used for CO2 ca [...]

by Marina Moguilevitch  , Michael Rufino  , Shalom Frager  and Tracey Straker

Received: 28 May 2020;  Published: 17 August 2020;  doi: 10.21926/obm.transplant.2003116

Liver transplant is a life-saving therapy for patients with end stage liver disease and liver cancer. Liver re-transplantation cases are usually more challenging and riskier than primary surgery, they require careful consideration and larger recourse utilization. Decision making on who receives transplantation surgery includes individual patient risks and benefits, physician judgment, specific transplant center policies, surgical experience, geographic organ availability, and ethical considerations. Several mathema [...]

by Alyssa M. Krueger  , Kelsey Smith  , Arielle Pollock  , Christine Dunkel Schetter  and Nicole E. Mahrer

Received: 24 December 2023;  Published: 30 April 2024;  doi: 10.21926/obm.icm.2402025

Residential and nonresidential fathers are taking an increasingly greater role in their children’s lives, and father involvement predicts positive child outcomes across development. This study utilized data from a large sample of racially and ethnically diverse fathers of low to middle income (n = 1,112) to test if paternal stress is associated with lower father involvement in early infancy and whether perceived social support is protective. Exploratory analyses examined whether the effects of stress on father invo [...]

by Miguel Mayo-Yáñez  and Irma Cabo-Varela

Received: 29 June 2020;  Published: 08 September 2020;  doi: 10.21926/obm.neurobiol.2003072

Alzheimer’s disease is the most common type of dementia in the world. This manuscript attempts to review the current knowledge of neurolaryngology and speech and language therapy in Alzheimer’s disease in order to distinguish it from other neurodegenerative diseases. Only a limited number of studies carried out on Alzheimer’s disease patients with speech or laryngeal disorders are found in the literature. Laryngeal (dysphonia, dysphagia, dry mucosa…) and speech symptoms (aphasic, rhythm alterations…) appear to exis [...]

by Ethan G. Lester  , Amy R. Murrell  and Dickson E. Dickson

Received: 19 June 2018;  Published: 14 October 2018;  doi: 10.21926/obm.icm.1804026

Background: Mindfulness meditation (MM) is an increasing area of interest for health professionals and the general public alike. Beneficial outcomes are associated with this practice; however, definitions of mindfulness and meditation are varied, and anecdotal accounts suggest that people hold conceptions about the constructs. Furthermore, mindfulness has been incorporated into therapeutic modalities without much consideration for context, including the client’s previous experiences with and understanding of MM. To [...]

by Aaron R. Dezube  , Ashley L. Deeb  and Michael T. Jaklitsch

Received: 25 June 2021;  Published: 15 October 2021;  doi: 10.21926/obm.neurobiol.2104109

Myasthenia Gravis (MG) is a rare autoimmune disorder characterized by antibody mediated blockade of neuromuscular transmission. Up until the last decade, evidence suggesting benefit of thymectomy for myasthenia gravis has been based on non-randomized control studies. Our paper serves as an expert narrative review of new literature pertaining to surgical management of myasthenia gravis based on review of articles from PubMed and Cochrane database from date of inception through June 14, 2021. We used the MeSH search [...]