by Xiuhui Tang  , Daming Zhang  and Hua Chai

Received: 19 May 2021;  Published: 08 July 2021;  doi: 10.21926/jept.2103032

In AC microgrid systems, technical issues resulting from the power control effect are the power control method efficiency and the filter resonance since voltage-frequency interference and filtering resonance may cause significant control input reduction and oscillation. A simple and robust solution is to regulate active power flow by adding an optimal passive damping resistor. The optimal LCL filter parameterization process in this paper provides an innovative approach to obtain the optimal quality factor and the o [...]

by Melissa M Howard  , Justin Phillips  , Stefan Henley  , Sarah E. Green  and Emily R. Rosario

Received: 01 November 2020;  Published: 07 July 2021;  doi: 10.21926/obm.geriatr.2103175

Anterior cervical osteophytes are common in the geriatric population. Dysphagia can occur in individuals suffering from these spinal abnormalities. Surgical intervention is an uncommon course of treatment for these patients, but is often utilized as a last resort with the hope of swallow recovery. The purpose of this article is to highlight a unique case study documenting the required treatment course for dysphagia associated with osteophytes and subsequent osteophytectomy. We review current literature of both cons [...]

by Shih-Ang Hsu

Received: 13 December 2020;  Published: 06 July 2021;  doi: 10.21926/jept.2103031

In September 2020 Hurricane Sally affected the north central Gulf of Mexico. Making use of the anemometers data available at 4 oil rigs over the affected region, it is found that, when the atmospheric stability was near-neutral, the gust factor (G) decreases linearly with height from approximately 1.28 at 35m above the sea surface to 1.18 at 160 m. In other words, G decreases linearly at the rate around 8% per 100 m from the typical hub height to beyond common hub height. Based on the linear equation found in this [...]

by Bo-Cai Gao  and Rong-Rong Li

Received: 26 April 2021;  Published: 05 July 2021;  doi: 10.21926/aeer.2103017

Passive high spatial resolution hyperspectral and multispectral imaging systems in the solar spectral region from aircraft and satellite platforms are being increasingly used for remote sensing of coastal waters and inland lakes. However, the remotely sensed data are often contaminated by the specular reflection of solar radiation at the air/water interface. Thus, the effects of sunglint need to be corrected. The purpose of sunglint correction is to remove the undesired specular reflected portion of radiance that d [...]

by Jacqueline Lamond  and Charles L. Shapiro

Received: 07 December 2020;  Published: 05 July 2021;  doi: 10.21926/obm.geriatr.2103173

Breast cancer and osteoporosis are both diseases of aging. The "one in eight" lifetime risks of breast cancer occur primarily in the sixth, seventh, eighth, and ninth decades of life. One-third of postmenopausal women will experience an osteoporotic fracture. It is the coalescence of osteoporosis, breast cancer, and breast cancer treatments that, in some cases, increases the risks of osteoporotic fracture. That makes it imperative to assess risk factors, screen, and prevent or treat osteoporosis in postmenopausal w [...]

by Shalika B. Katugaha  , Amit K. Mahajan  , Meg Fregoso  , Haresh Mani  and Oksana A. Shlobin

Received: 25 October 2020;  Published: 03 July 2021;  doi: 10.21926/obm.transplant.2103147

A 65-year-old female with a history of right lung transplantation (LTx) for chronic obstructive pulmonary disease (COPD) 9-years prior complicated by grade 3 bronchiolitis obliterans syndrome (BOS) was admitted to the hospital for chest pain and dyspnea on exertion (DOE). Her bronchoscopy revealed fluffy, endobronchial lesions that were adherent to the right sided anastomosis resulting in mild obstruction of the right mainstem bronchus. Pathology from biopsies of the endobronchial lesions revealed hyphal fungal org [...]

by Asaad G Ishak  , Sundar V Cherukuri  , GianCarlo Diaz  and Richard McCallum

Received: 25 January 2021;  Published: 02 July 2021;  doi: 10.21926/obm.geriatr.2103174

Dysphagia, or difficulty swallowing, is a common condition, especially among the elderly population and can become debilitating. As we age, there are subtle changes in esophageal motility, but by no means is dysphagia ever considered to be a normal result of aging. Dysphagia usually presents with a variety of accompanying symptoms ranging from regurgitation during meals, mild discomfort, to severe chest pain. It can be challenging to localize the dysphagia from the history. The underlying etiology may become eviden [...]

by Abhijit Jagdale  , C. Adam Banks  , Hayato Iwase  , David K.C. Cooper  and Hidetaka Hara

Received: 29 December 2020;  Published: 30 June 2021;  doi: 10.21926/obm.transplant.2102146

It has been speculated that the immunomodulation associated with pregnancy, e.g., decreasing pro-inflammatory cytokines, increasing anti-inflammatory cytokines, upregulation of T regulatory cells (Tregs), is in part due to the effect of human chorionic gonadotropin (hCG). In this study, we tested the effect of hCG on proliferation of human peripheral blood mononuclear cells (PBMCs) stimulated by irradiated pig PBMCs. Mixed lymphocyte reaction (MLR) was carried out with human PBMCs as responders and irradiated wild- [...]

by Aditya Sharma  , Opeyemi Bello  , Catalin Teodoriu  and Hamidreza Karami

Received: 15 February 2021;  Published: 30 June 2021;  doi: 10.21926/jept.2102030

The Industry 4.0 is here, and advanced technologies are widely available for domains such oil and gas which are traditionally slow in adopting extreme new technologies. This paper presents the design architecture and implementation of effective data acquisition (DAQ) and monitoring system applied to an experimental sucker rod pumping unit for both event occurrence and educational purpose using latest technological advancements and industry 4.0 principles. The designed framework allows control and monitoring of anal [...]

by Lordwin Girish Kumar Jeyakumar  , David B. McKenzie  , Yuanmei Zhang  , Lakshman Galagedara  , Shabtai Bittman  and Derek Hunt

Received: 30 December 2020;  Published: 28 June 2021;  doi: 10.21926/aeer.2102016

Subsurface tile drainage installation helps to maintain water table levels and to meet adequate crop moisture requirements. Artificial subsurface drainage continues to be a common practice in Newfoundland and Labrador (NL) and elsewhere around the world. The main objective of this study was to evaluate the performance of DRAINMOD in simulating water table depth (WTD) and water outflow from tile drained agricultural fields. This site on the Avalon Peninsula of Eastern Newfoundland has a rolling landscape with predom [...]