نتایج جستجو برای: reflow

تعداد نتایج: 2586  

2012
Jong Seob Choi Yunxian Piao Tae Seok Seo

In this study, we described the fabrication method for microfluidic channels with circular-cross sectional geometries by reflow phenomenon. The photoresist reflow leads to shape change from rectangular to semicircular, and we optimized the reflow conditions by using positive photoresist to form the perfect cylindrical micropatterns. The resultant circular micropattern was used as a template for...

2016
Sang Yup Lim

Recently, percutaneous coronary intervention has been the treatment of choice in most acute myocardial infarction cases. Although the results of percutaneous coronary interventions have ben good, the no-reflow phenomenon and distal embolization of intracoronary thrombus are still major problems even after successful interventions. In this article, we will briefly review the deleterious effects ...

Journal: :Thrombosis and haemostasis 2005
Robert V Kelly George A Stouffer

Thromb Haemost 2005; 94: 693–4 Coronary no-reflow is a rare but potentially devastating complication that can occur during percutaneous coronary interventions (PCI). It is defined as the lack of passage of contrast dye into the microvasculature despite relief of the original obstruction in the epicardial vessel and is an angiographic marker of impaired myocardial perfusion at the tissue level (...

2012
Ryan Berg Cyrus Buhari

The no reflow phenomenon can happen during elective or primary percutaneous coronary intervention. This phenomenon is thought to be a complex process involving multiple factors that eventually lead to microvascular obstruction and endothelial disruption. Key pathogenic components include distal atherothrombotic embolization, ischemic injury, reperfusion injury, and susceptibility of coronary mi...

Journal: :Journal of neurology, neurosurgery, and psychiatry 1975
M J Harrison L Sedal J Arnold R W Russell

The no-reflow phenomenon has been produced in the cerebral hemispheres of the gerbil by 30 minutes of bilateral carotid artery occlusion. The no-reflow phenomenon was found to develop in relation to the fall in blood pressure which occurred on release of bilateral carotid clips. Metaraminol tartrate intravenously prevented the fall of blood pressure and significantly reduced the occurrence of t...

2017
Meng-Chieh Liao Pu-Shan Huang Yi-Hsien Lin Ming-Yi Tsai Chen-Yu Huang

Measurements of the curvatures and warpages of a printed circuit board (PCB) during a thermal solder reflow process using strain gauges are proposed in this study. In the experiments, a shadow moiré is used for measuring the out-of-plane deformations (or warpage) of a bi-material plate and a PCB with dual in-line memory module (DIMM) sockets during solder reflow heating, while the finite elemen...

Journal: :European heart journal 2006
Katsuomi Iwakura Hiroshi Ito Shigeo Kawano Atsushi Okamura Toshiya Kurotobi Motoo Date Koichi Inoue Kenshi Fujii

AIMS Early statin treatment has beneficial effects on prognosis after acute coronary syndrome. The no-reflow phenomenon determines the prognosis after acute myocardial infarction. We investigated the effects of statin treatment before admission on the development of the no-reflow after infarction. METHODS AND RESULTS We performed intracoronary myocardial contrast echocardiography in 293 conse...

Journal: :Neurology 2022

#### Notable in Neurology This Week issue features an article that examines the association between COVID-19 and risk of acute ischemic stroke; another investigates whether epilepsy type, seizure location, medications influence frequency during pregnancy postpartum. A featured Contemporary Issues Practice, Education, & Research explores strategies to generate more interest neurology among under...

2011
Ronald C. Lasky

The combination of higher lead-free process temperatures, smaller print deposits, and temperature restraints on electrical components has created difficult challenges in optimizing the reflow process. Not only are the electronic components and the PWB at risk, but the ability to achieve a robust solder joint becomes difficult, especially if the PCB is thermally massive. In addition, the constan...

2008
Jing-Lin ZHAO Yue-Jin YANG Wei-Dong PEI Yu-Hua SUN Mei ZHAI Ya-Xin LIU Run-Lin GAO

It has been verified that glycoprotein IIb/IIIa inhibitor tirofiban can attenuate myocardial no-reflow. Myocardial no-reflow has been associated with alterations in endothelial junctions. In addition, ET-1 is an important mechanism for myocardial no-reflow. However, the effect of tirofiban on endothelial junctions and Endothelin-1 (ET-1) is unknown. Methods: Twenty-eight mini-swines were random...

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