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- 저자 : Kung Chin-Wei (검색결과 2 건)
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Acute kidney disease: an overview of the epidemiology, pathophysiology, and management
Kung Chin-Wei,Chou Yu-Hsiang 대한신장학회 2023 Kidney Research and Clinical Practice Vol.42 No.6
Acute kidney injury (AKI) increases the risk of chronic kidney disease (CKD), and AKI and CKD are seen as interconnected syndromes. Acute kidney disease (AKD) is defined as subacute damage and/or loss of kidney function occurring 7 to 90 days after AKI, during which period key interventions may be initiated to hinder the development of CKD. While AKD is usually under-recognized, it is associated with high morbidity and mortality globally. This review article aims to summarize the current knowledge concerning the epidemiology, pathophysiology, and management of AKD with the aim to develop monitoring strategies and therapeutic agents of AKD. Generally, AKD tends to occur more frequently in the elderly and those with chronic diseases, such as hypertension, diabetes mellitus, and metabolic syndrome. In addition, the severity, duration, and frequency of AKI are independent risk factors for AKD. Investigations of several mechanisms of AKD, such as renal tubular epithelium cell-cycle arrest, epigenetic change, chronic inflammation, mitochondria dysfunction, failed regeneration of tubular cells, metabolic reprogramming, and renin-angiotensin system (RAS) activation, have identified additional potential pharmacotherapy targets. Management of AKD includes prevention of repeated AKI, early and regular follow-up by a nephrologist, resumption and adjustment of essential medication, optimization of blood pressure control and nutrition management, and development of new pharmaceutical agents including RAS inhibitors. Finally, we outline a care bundle for AKD patients based on important lessons learned from studies and registries and identify the need for clinical trials of RAS inhibitors or other novel agents to impede ensuing CKD development.
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Chung-Che Chou,Gee‑Jin Yu,Kung‑Juin Wang,Wei‑Tze Chang,Chiun‑Lin Wu,Charlene Chin‑Jie Zhao,Chun‑Yao Yang,Ming‑Ti Chou 한국정밀공학회 2023 International Journal of Precision Engineering and Vol.24 No.9
This paper presents a study to investigate the feasibility of using robotic welding technologies to weld the continuity plate and the column flange plate during manufacturing steel built-up box columns in buildings. Specimens designed to emulate the key components in the steel beam-to-column moment connections for Special moment frame were fabricated and welded using a proposed automated procedure that performs multi-layer, multi-pass welding for thick steel plates. Effects of controlling parameters on robotic welding results that includes the manner of bead stacking, wire feed speed, travel speed, working angle, arc voltage, the path of the welding pass, and the methods to start and finish welding passes were investigated. The quality of the welded products was assessed by visual inspection and ultrasonic testing (UT). Further mechanical tests including tensile tests, bending tests, and cyclic loading tests were carried out on selected welded products that passed the UT examination. The test results indicated that the robotic welds showed no visible damage or cracks, met requirements specified in the AWS specification, and exhibited satisfactory strength and ductility.
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