Plane Waves Scattered by a Spherical Inclusion in a Half Space of Poroelastic Material
Abstract
1862 8007
Plane Waves Scattered by a Spherical Inclusion in a Half Space of Poroelastic Materialby
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 |
Pandemics 2020 –COVID 19 Silent Hypoxia and Polysubstance Use: A Unique Case Reportby
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 |
Mechanical Characterization of a Tunable 3-D Collagen-Hyaluronic Acid Hydrogel for Use in Cell Cultureby
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 |
Do We Care about Preschool Children's Leisure Time? Correlations between Anxiety Symptoms and Leisure Time Allocation. Results of a Cross-Sectional StudyAbstract
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 |
Primary Pancreatic-Type Acinar Cell Carcinoma of Jejunum Arising from Ectopic Pancreas with Synchronous Metastasis to Left Adrenal GlandAbstract
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 |
Hypnotic Regression as an Autoethnographic Modality for Exploring Adverse Childhood Experiences as Proposed Effectors of Chronic Adult Obesity - Selected Case StudiesAbstract
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 |
A Robust Second-Order Conic Programming Model with Effective Budget of Uncertainty in the Optimal Power Flow ProblemAbstract
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 |
Local Authority Waste Management Strategies, the Circular Economy and the Generation of Energy from Waste in Englandby
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 |
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