by Cherechi Ndukwe  , M. Tariq Iqbal  , Jahangir Khan  and Mohsin Jamil

Received: 18 April 2022;  Published: 26 June 2022;  doi: 10.21926/jept.2202022

One important aspect toward proper and stable functioning of a communication-based controlled microgrid is data transmission. Consequently, an analysis of the effect of data transmission delay is of significance for any chosen communication protocol. This paper focuses on the effect of employing LoRa for data transfer at the secondary control level of a standalone DC microgrid. It analyses the effect of LoRa transmission delay on the dynamic performance of DC microgrids. This paper simulates a community DC microgri [...]

by Agegnehu Kitanbo Yoshe

Received: 03 September 2024;  Published: 06 January 2025;  doi: 10.21926/aeer.2501003

Managing water resources offers crucial information about the availability of water supplied from catchments into water bodies, which plays a vital role in water resource engineering. However, due to changes in the global climate, hydrological modeling of river catchments is critically crucial for socio-economic development and livelihoods. Numerous models evaluate runoff from precipitation, but the SCS-CN method is fundamental and the most widely recognized for calculating runoff. This research evaluates runoff de [...]

by Sanaz Taherzadeh  , Deanna Gray-Miceli  , Ksenia Zukowsky  , Kathy Gray  and Sarah J. Ratcliffe

Received: 01 February 2025;  Published: 26 June 2025;  doi: 10.21926/obm.geriatr.2502317

Falls are a serious global public health issue affecting individuals of all ages, resulting in serious injuries, fatalities, and extended hospital stays. While knowledge and attitude of healthcare staff toward fall prevention are understood to impact patient safety, less well known are the type and content of fall prevention surveys used to identify nurses’ knowledge of fall prevention. Until now, no study has systematically reviewed the universe of existing tests, surveys, and programs used to assess fall pr [...]

by Peter Newman  and Marie Verschuer

Received: 27 February 2023;  Published: 17 November 2023;  doi: 10.21926/jept.2304036

The transition to net zero cities is a pivotal challenge in the face of climate change. This research introduces a novel methodology termed "Net Zero Corridors," which emphasizes a bottom-up approach to decarbonize urban power and transport systems. By focusing on urban corridors, this method integrates distributed power systems with urban transport, offering a localized solution to the broader challenge of urban decarbonization. Drawing from urban fabric theory and urban metabolism data, the study provides insight [...]

by Jéssica A.P. Ponciano  and Marcelo S. Batista

Received: 01 December 2021;  Published: 26 January 2022;  doi: 10.21926/cr.2201002

In this paper, the relationship between activity and structure of Cu2+ in different chemical environments of Cu-BETA, La2CuO4, and CuO nanocatalysts was systematically investigated for acetonitrile combustion. The study revealed that exchanged and octahedral species of Cu2+ coexist in Cu-BETA, while octahedral species are dominant in CuO and La2CuO4. All nanocatalysts achieved high conversion rates of acetonitrile, which rapidly increased with temperature. CuO and La2CuO4 led to the formation of undesired products [...]

by Victoria Gómez-Dos-Santos  , Vital Hevia-Palacios  , Edurne Ramos-Muñoz  , María Laura García-Bermejo  , Esperanza Macarena Rodríguez-Serrano  , Ana Saiz-González  , Jose Manuel Del Rey-Sánchez  and Francisco Javier Burgos-Revilla

Received: 22 March 2018;  Published: 21 June 2018;  doi: 10.21926/obm.transplant.1802012

Background: Extended criteria donors and donation after cardiac death donors provide organs which tend to be more sensitive to the stress of preservation. There is a lack of evidence about the potential role of oxygen in preservation techniques, and literature comparing oxygenated and non-oxygenated techniques is very limited. The aim of the study was to compare HMP with oxygen versus HMP without oxygen in a pig model of kidney auto-transplantation (KT) reproducing conditions of DCD. We have also set up miRNAs expr [...]

by Hiromi Matsuhashi

Received: 28 April 2022;  Published: 06 June 2022;  doi: 10.21926/cr.2202015

Solid base catalysts consisting of MgO modified with 10 mol% ZnO (ZnO/MgO) were prepared by depositing zinc(II) acetylacetonate (Zn(acac)2) in polar and nonpolar organic solvents on the surface of MgO and Mg(OH)2. The process was followed by thermal decomposition in air at 773 K over a period of 3 h. The activity of MgO modified with Zn(acac)2 for base-catalyzed retroaldol reaction (the decomposition of diacetone alcohol (4-hydroxy-4-methyl-2-pentanone) to acetone) at 299 K was higher than the activity of unmodifie [...]

by Amanda B. Cooper  , Stephen M. Downs  , Nicholas J Skill  , Richard S. Mangus  , Chandrashekhar A. Kubal  and Mary A. Maluccio

Received: 18 March 2019;  Published: 13 May 2019;  doi: 10.21926/obm.transplant.1902063

Background: Hepatocellular carcinoma (HCC) is a lethal tumor, for which liver resection and transplantation are the only potentially curative treatments. No prospective, randomized study has compared survival in patients with compensated cirrhosis after the two operations Methods: Decision analysis modeling is an objective method to quantify risks and benefits. This study aimed to use decision analysis with a Markov model to estimate the impact of liver transplant and surgical resection on survival for patients wit [...]

by Emily Reeves  , Brigitte Liebig  and Eveline Degen

Received: 14 July 2020;  Published: 20 October 2020;  doi: 10.21926/obm.icm.2004041

High-quality care is an important aim of palliative care services. However, the quality of care is a complex phenomenon and is subjectively perceived by those who are closest to the services and are often evaluated poorly. Prior research has highlighted the difficulties in evaluating the quality of care because of different perspectives, and still, only a little is understood about the perception of the quality of care in palliative care services. Investigating the perspectives of key individuals involved in pallia [...]

by Yi-Chia Liao  , Chun-Hway Hsueh  and Wen-Shin Lee

Received: 16 May 2020;  Published: 15 June 2020;  doi: 10.21926/rpm.2002014

Inspired by the application of metallic glass sheet as face material for improving the performance of golf clubs, the present work was aimed to explore the application of thin-film metallic glass (TFMG) coatings for enhancing the performance of strings. In order to achieve this aim, badminton strings were coated with TFMG coatings of different thicknesses. The compositions of these TFMG coatings were analyzed using an electron probe micro-analyzer. The amorphous structure of the film was verified using X-ray diffra [...]