by Xiang-Yu Sun  , Ping-Hong Jhou  , Min-Ze Lu  and Chang-Ming Liaw

Received: 25 February 2021;  Published: 22 June 2021;  doi: 10.21926/jept.2102028

This paper presents the development of a wind Interior Permanent-Magnet Synchronous Generator (IPMSG) based bipolar DC microgrids along with various switch-mode rectifiers. Firstly, the wind IPMSG is established and adequately controlled to possess satisfactory generating characteristics during different driven speeds and loads. Later, the boost switch-mode rectifier (SMR) based bipolar DC bus is established. Further, three-phase single-switch (3P1SW) boost SMR, three-phase two-switch (3P2SW) three-level boost SMR, [...]

by Victoria Lorenzetti  , Elena Bargagli  , Antonella Fossi  , David Bennett  , Paolo Cameli  and Paola Rottoli

Received: 30 August 2018;  Published: 18 December 2018;  doi: 10.21926/obm.transplant.1804033

Background: Alpha-1-antitrypsin (AAT) deficiency is the most common hereditary disorder in adults and is associated with an increased risk of developing lung emphysema. Methods:Here, we report the case of a 54-year-old man, who underwent bilateral lung transplantation due to AAT deficiency emphysema in the general hospital of Siena, Italy. Results:The patient was diagnosed with partial AAT deficiency (189 mg/dL) associated with the PIMZ genotype; although he quit smoking, his lung disease progressed to chronic resp [...]

by Aline Duarte Folle  , Kimberly C Paul  , Cynthia D Kusters  , Jeff M Bronstein  , Adrienne M Keener  and Beate Ritz

Received: 30 June 2020;  Published: 26 August 2020;  doi: 10.21926/obm.geriatr.2003131

Insomnia and excessive daytime sleepiness are the most common sleep disturbances in Parkinson’s disease. This study aims at better understanding how severity of PD motor and non-motor features and dopaminergic treatments contribute to these sleep symptoms in the first decade of PD. Data from a community-based cohort of PD patients was used to model cross-sectional PD-related risk factors for insomnia and EDS sleep scores using linear regression models adjusted for age, gender, and PD duration. Longitudinal changes [...]

by Patricia Lynn Dobkin

Received: 23 April 2018;  Published: 02 July 2018;  doi: 10.21926/obm.icm.1803013

Objectives: Living with any chronic pain condition is a challenge that can be met when one reduces reactivity to the sensory and evaluative aspects of it. The aim of this case study is to show how a clinical psychologist with expertise in chronic illness applied Buddhist principles to her own experience. Methods: When one realizes that suffering is the combination of pain plus resistance then one can learn how to accept rather than exacerbate it. Applying the Four Noble Truths from Buddhist psychology to understand [...]

by Deborah H. John  , Patrick Abi Nader  and Katherine Gunter

Received: 29 October 2018;  Published: 06 January 2020;  doi: 10.21926/obm.geriatr.2001098

Physical inactivity is the fourth leading risk factor for global mortality and as such, it is critical that physical activity guidelines for health consider equitable access to physical activity opportunities for all, including those aged 65 years and older. The purpose of this study was to examine the intersections of attributes of older people (e.g. income, gender, age, health, physical activity) and attributes of the places they live (e.g. rurality, public transit, sidewalks, parks, community centre) to explain [...]

by Joseph S. D'Arrigo

Received: 26 December 2019;  Published: 28 February 2020;  doi: 10.21926/obm.geriatr.2001110

Aging, hypertension, diabetes, obesity, atherosclerosis, traumatic brain injury, and other factors can all synergistically promote diverse pathological mechanisms. These risk factors trigger widespread inflammation and oxidative stress, both of which can lead to blood-brain barrier (BBB) disruption. These pathological cascades lead to neuronal Ca2+ increase, neurodegeneration, gradual cognitive/memory decline, and eventually Alzheimer's disease. In particular, more recent research indicates that chronic inflamm [...]

by Gerhard Litscher

Received: 05 January 2025;  Published: 07 January 2025;  doi: 10.21926/obm.icm.2501003

Acupuncture, an ancient practice in traditional Chinese medicine, is founded on understanding of human physiology and the dynamics of energy flow (Qi). The emergence of artificial intelligence (AI) in modern medicine presents opportunities to integrate advanced technologies into acupuncture, enhancing diagnostic precision and empirical validation. AI tools can analyze complex datasets, model energy flow dynamics, and provide evidence-based insights, potentially bridging traditional methodologies with scientific par [...]

by Ian Macreadie  and Sudip Dhakal

Received: 05 May 2019;  Published: 17 July 2019;  doi: 10.21926/obm.geriatr.1903064

The yeast, Saccharomyces cerevisiae, the model eukaryote, has provided much understanding of molecular and cellular biology, as well as insights into many human diseases. In this paper we review how yeast studies are contributing to knowledge about the role of oxidative damage to cell health, and how one of the key players in Alzheimer’s disease, amyloid beta (Aβ) is linked to the reactive oxygen species response involving AHP1, which encodes an alkyl hydroperoxidase, Ahp1p, a protein involved in protect [...]

by Giuseppe Cocco  and Philipp Amiet

Received: 05 February 2020;  Published: 19 March 2020;  doi: 10.21926/obm.geriatr.2001111

The present article summarizes the current state of understanding in geriatric cardiology in terms of the main developments in the field. The focus of the present review is on the therapeutics, into the specific characteristics of the elderly pa­tients dealing with the prevention of arterial hypertension, bradycardic arrhythmias, atrial fibrillation, coronary artery syndromes, valve heart diseases, and heart failure. Progress in the field of medicine has rendered possible to treat lethal cardiac diseases in the [...]

by Luis F. Riquelme  , Sara Diab  , Angela Horyacheva  , Isabel Huribal  , Andreea Shellerud  , Sophia Werden Abrams  and Ashwini M. Namasivayam-MacDonald

Received: 29 April 2022;  Published: 11 August 2022;  doi: 10.21926/obm.icm.2203036

The purpose of this study was to collate and summarize the content covered in published literature describing speech-language pathology management of adult patients with COVID-19 in the acute hospital setting as of February 2022. This review serves as an updated review of the initial recommendations to guide speech-language pathology management for adults with COVID-19 in the acute hospital setting previously provided by Namasivayam-MacDonald and Riquelme in July of 2020. This scoping review followed the Preferred [...]