Table of Content

Open Access Research Article

Plane Waves Scattered by a Spherical Inclusion in a Half Space of Poroelastic Material

Received: 09 December 2020;  Published: 02 June 2021;  doi: 10.21926/rpm.2102021

Abstract

This paper concerns a poroelastic half-space in which plane compressional waves are scattered by a spherical inclusion. Addition theorems for the spherical wave functions are utilized to meet the boundary conditions on the plane, and the satisfaction of the given conditions on the boundary of the sphere leads to three infinite series equations, whose solution can be acquired by successive approximations. Further, its existence and uniqueness are discussed.

1862 8007

Open Access Interview

An Interview with Dr. Mark Stoneking

Received: 07 July 2022;  Published: 13 July 2022;  doi: 10.21926/obm.genet.2203160

1184 7995

Open Access Case Report

Pandemics 2020 –COVID 19 Silent Hypoxia and Polysubstance Use: A Unique Case Report

Received: 24 December 2020;  Published: 30 August 2021;  doi: 10.21926/obm.icm.2103025

Abstract

The coronavirus (COVID-19) pandemic continues to bring challenges in identification and management of which the “happy hypoxic” or silent hypoxia presentation has been found to present its own unique challenge. A 67-year-old African American COVID-19 positive female presents to the emergency department (ED) with a chief complaint of decreased oral intake and responsiveness, oriented and stable, with oxygen saturations found to drop as low as 47%. The patient was successfully managed with supplemental oxygen and det [...]

1422 7994

Open Access Original Research

Mechanical Characterization of a Tunable 3-D Collagen-Hyaluronic Acid Hydrogel for Use in Cell Culture

Received: 28 June 2024;  Published: 17 December 2024;  doi: 10.21926/rpm.2404028

Abstract

Many cells demonstrate variances in behavior due to their cell culture environment. To provide a mechanically-tunable, tissue-like environment, a 3D hydrogel for cell culture was formulated using collagen (Col) and hyaluronic acid (HA) to help provide a system for studying these dynamic cellular responses in a soft-tissue environment. A design of experiments was organized to study the effects of collagen concentration, HA fragment size, and Col: HA mass ratio on the hydrogel mechanical properties. Mechanical charac [...]

1481 7994

Open Access Research Article

Do We Care about Preschool Children's Leisure Time? Correlations between Anxiety Symptoms and Leisure Time Allocation. Results of a Cross-Sectional Study

Received: 06 January 2025;  Published: 24 March 2025;  doi: 10.21926/obm.neurobiol.2501280

Abstract

Children's leisure time in the Western world is changing compared to what it used to be in the previous decades. Children's involvement in organized activities and screen time use is increasing, while outdoor play, despite once being the main leisure time activity for children, is declining. Gray, Oliver and other contemporary theorists link this shift in children's lifestyles to an increase in the prevalence of anxiety disorders. This study aimed to determine whether allocating preschool children's [...]

1407 7982

Open Access Case Report

Primary Pancreatic-Type Acinar Cell Carcinoma of Jejunum Arising from Ectopic Pancreas with Synchronous Metastasis to Left Adrenal Gland

Received: 08 July 2019;  Published: 28 October 2019;  doi: 10.21926/obm.hg.1904038

Abstract

Background: Pure pancreatic-type ACC outside the pancreas is extremely rare. Methods: We presented a very rare case of primary ACC of the pancreatic-type involving jejunum with a synchronous metastasis to left adrenal gland arising in well-developed ectopic pancreas which had fully developed pancreatic acini, islets of Langerhans, ductal structures, pancreatic cancer precursor lesions and a well-formed minor papilla that opens to the mucosal surface of jejunum. We also reviewed all 21 cases of pure pancreatic-type [...]

1521 7981

Open Access Original Research

Hypnotic Regression as an Autoethnographic Modality for Exploring Adverse Childhood Experiences as Proposed Effectors of Chronic Adult Obesity - Selected Case Studies

Received: 09 March 2022;  Published: 26 September 2022;  doi: 10.21926/obm.icm.2203046

Abstract

Much has been written about the aetiological role of Adverse Childhood Experiences (ACEs) in the development of chronic adult physical and emotional health problems but current screening methods utilising questionnaires and formal interviewing often fail to show consensus across populations and surveys. This paper proposes that hypnotic regression might provide an alternative approach to ACE screening through its facility in revealing unsuspected and seemingly minor ACEs, which nevertheless can go on to have long t [...]

1539 7979

Open Access Original Research

A Robust Second-Order Conic Programming Model with Effective Budget of Uncertainty in the Optimal Power Flow Problem

Received: 29 December 2021;  Published: 09 October 2022;  doi: 10.21926/jept.2204031

Abstract

Integrating large-scale wind energy in modern power systems necessitates high-efficiency mathematical models to address classical assumptions in power systems. In particular, two main assumptions for wind energy integration in power systems have not been adequately studied. First, nonlinear AC power flow equations have been linearized in most of the literature. Such simplifications can lead to inaccurate power flow calculations and result in technical issues. Second, wind power uncertainties are inevitable and have [...]

1406 7978

Open Access Research Article

Local Authority Waste Management Strategies, the Circular Economy and the Generation of Energy from Waste in England

Received: 17 February 2024;  Published: 01 April 2024;  doi: 10.21926/jept.2402009

Abstract

The purpose of this article is to examine the approach to waste management of local authorities in England, to investigate their strategic objectives, and to ascertain to what extent sustainability and circular economy practices are in evidence in this context. A qualitative, inductive research method is used, based on an examination of secondary documentation in three local authorities in England in Birmingham, Bristol and Newcastle upon Tyne. The findings reveal considerable common ground within the three authori [...]

1317 7976

Open Access Editorial

Climate Change and Land – Current Knowledge and Future Challenges

Received: 11 August 2020;  Published: 17 August 2020;  doi: 10.21926/aeer.2003001

1515 7967

TOP