Table of Content

Open Access Original Research

Post-Combustion CO2 Capture from an Industrial Power Plant Using Five Chemical Solvents: A Comparative TEA

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

Abstract

CO2 capture processes using five chemical solvents were modeled in Aspen Plus V.12.1 for the capture of more than 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 C [...]

13 53

Open Access Review

Epstein-Barr Virus and Helicobacter pylori as Two Main Risk Factors in Gastric Cancer

Received: 21 June 2024;  Published: 20 November 2024;  doi: 10.21926/obm.genet.2404272

Abstract

Microbial and viral pathogens have emerged as pivotal agents in oncogenesis. Research conducted in the last twenty years has significantly enhanced our comprehension of the cancer-causing capabilities of infectious agents. An illustrative instance is gastric cancer (GC), which is closely associated with Helicobacter pylori (H. pylori) and Epstein-Barr virus (EBV) infections. Despite concerted endeavors, GC remains a serious clinical challenge ranking as the fifth most commonly diagnosed cancer worldwide. In 2020, a [...]

17 87

Open Access Research Article

External Validation and Modification of a New Score for Predicting Mortality in Patients with COVID-19 in High Altitude Patients. A Peruvian Study

Received: 07 December 2022;  Published: 20 November 2024;  doi: 10.21926/obm.genet.2404271

Abstract

This study aims to validate two predictive mortality scores for patients with COVID-19 to support clinical decision-making in those who require hospitalization. The tomographic patterns found can be added to the original scores to increase their predictive power. Retrospective, analytical, observational, and cross-sectional studies were carried out in two phases. 489 medical records of patients with COVID-19 hospitalized at “Daniel A. Carrión” Hospital in Huancayo (located at 3,250 meters above sea level) were revi [...]

13 75

Open Access Review

Effective Physiotherapy for Post-Concussion Recovery and Return to Sports: Narrative Review

Received: 30 August 2024;  Published: 20 November 2024;  doi: 10.21926/obm.neurobiol.2404255

Abstract

Traumatic brain injury (TBI) caused by direct or indirect forces is a prevalent issue in contact sports, leading to symptoms such as headaches, dizziness, nausea, and neck pain. These symptoms can have long-term consequences, including neurodegenerative diseases and mood disorders. This review fills an essential gap in the literature, as current studies on physiotherapy for traumatic brain injury (TBI) in sports are limited in scope, particularly in evaluating multimodal and personalized interventions. The review a [...]

17 90

Open Access Review

Gut Microbiota and Neuroinflammation: An Interconnected Nexus of Health and Neurodegenerative Disease

Received: 08 June 2024;  Published: 20 November 2024;  doi: 10.21926/obm.neurobiol.2404254

Abstract

The gut microbiota, a complex ecosystem of billions of microorganisms in the human digestive tract, plays a crucial role in maintaining health. Recent studies have highlighted a bidirectional communication pathway called the gut-brain axis between the gut and the brain. This communication is significantly influenced by gut microbiota and its interactions with the immune system, which can affect brain function and contribute to inflammation. This study aims to provide a comprehensive overview of the relationship bet [...]

20 85

Open Access Original Research

A Phase I/II Randomized Trial of Higher Dose mRNA-1273 Boosters in Lung Transplant Recipients

Received: 16 August 2024;  Published: 20 November 2024;  doi: 10.21926/obm.transplant.2404227

Abstract

Higher-dose mRNA booster vaccines have not been well studied for transplant recipients. This study evaluated the safety, reactogenicity and immunogenicity of higher dose mRNA-1273 booster vaccines among lung transplant recipients (LTRs). This phase 1/2 open-label randomized clinical trial of higher-dose mRNA-1273 booster vaccination enrolled nineteen adult LTRs into the 50 ug (n=8) vs. 100 ug (n=11) groups before enrollment was terminated due to the availability of the bivalent mRNA-1273.222 vaccine. Local and syst [...]

23 171

Open Access Original Research

Stability Improvement of Multimachine System Using Back-To-Back Converters

Received: 15 July 2024;  Published: 15 November 2024;  doi: 10.21926/jept.2404021

Abstract

As the penetration level of inverter-based generators continues to increase, it becomes crucial to reduce power oscillations between inverters and synchronous generators (SG) to improve system stability. This paper uses a multimachine system as the research platform and proposes a grid separation method employing a multi-terminal back-to-back converter. The converter is designed to be placed at the point of common coupling (PCC) in the original multimachine system and can divide the original grid into multiple micr [...]

35 227

Open Access Perspective

A Natural Serotonin Stimulant for Appetite Suppression and Targeted Eating as an Alternative to Conventional Obesity Treatments

Received: 19 July 2024;  Published: 13 November 2024;  doi: 10.21926/rpn.2404018

Abstract

Recent advances in obesity management reflect the integration of pharmacological, surgical, and behavioral interventions, yet sustainable long-term outcomes remain elusive due to high attrition rates, the complexity of protocol compliance – and for some, costs, risks, and serious side effects. This research combined a patented nutraceutical designed to naturally stimulate serotonin, a biologic hunger agonist, to thereby aid in appetite control and facilitate weight loss through ‘Targeted Eating,’ a single, unrestri [...]

69 477

Open Access Short Report

The Brazilian Research Scenario in Green Hydrogen: A Brief Contextualization

Received: 18 April 2024;  Published: 11 November 2024;  doi: 10.21926/jept.2404020

Abstract

Hydrogen is crucial in various industrial sectors and can be obtained through different synthesis routes. However, a significant portion of its production still relies on chemical processes involving fossil fuels, resulting in hydrogen and the generation of greenhouse gases (GHGs) as the final byproduct. In alignment with the goals of the 2030 Agenda, where countries commit to implementing energy transition, hydrogen obtained through a green route has been increasingly explored by governmental and academic entities [...]

80 409

Open Access Research Article

Allogeneic Hematopoietic Stem Cell Transplantation in Patients with Fanconi Anemia: Results of a Single Center with a Fludarabine-Based Conditioning Regimen

Received: 29 June 2024;  Published: 11 November 2024;  doi: 10.21926/obm.transplant.2404226

Abstract

Allogeneic hematopoietic stem cell transplantation (Allo-HSCT) remains the only curative treatment for bone marrow failure (BMF) and hematologic complications of Fanconi anemia (FA). The evolution remains affected by the toxicity, the risk of graft failure, and clonal evolution. This study aimed to identify factors affecting outcomes in FA patients after allo-HSCT. We included FA patients who underwent allo-HSCT between January 2006 and December 2021. The conditioning regimen was cyclophosphamide/fludarabine (Cy/Fl [...]

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