نتایج جستجو برای: stress concentration and collapse mechanism

تعداد نتایج: 16993733  

Journal: :Journal of Fluids and Structures 2021

This research is devoted to understanding the physical mechanism of cavitation erosion in liquid flows at fundamental scale bubble collapse. Cavitation bubbles form a when pressure decreases locally below saturated vapor pvsat. The grow due low ambient and collapse surrounding increases again above Bubble near solid walls can result high velocity jet shock wave emission that cause loads on wall...

2013
Tinna Laufey Ásgeirsdóttir Dagný Ósk Ragnarsdóttir

INTRODUCTION The aim of publicly-provided health care is generally not only to produce health, but also to decrease variation in health by socio-economic status. The aim of this study is to measure to what extent this goal has been obtained in various European countries and evaluate the determinants of inequalities within countries, as well as cross-country patterns with regard to different cul...

2016
Yu Gao Lu Shi Kelly C. Smith Jeffery B. Kingree Martie Thompson

BACKGROUND The link between trait mindfulness and several dimensions of aggression (verbal, anger and hostility) has been documented, while the link between physical aggression and trait mindfulness remains less clear. METHOD We used two datasets: one United States sample from 300 freshmen males from Clemson University, South Carolina and a Chinese sample of 1516 freshmen students from Shangh...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تبریز - دانشکده علوم طبیعی 1391

in recent years many researchers have been focused on interaction of small molecules with dna. dna is generally the primary intracellular of anticancer drugs, so the interaction between small molecules and dna can cause dna damage in cancer cells, blocking the division of cancer cells and resulting in cell death. the flavonoids are a large group of polyphenolic natural products that are widely ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه علامه طباطبایی 1389

the quest for power has formed much of the world history especially in 20th and 21st centuries. oil (energy) particularly after industrial revolution has been a tool for conquest and power and has been transformed to a geopolitical issue. from a geopolitical point of view this has been the case for the last two centuries in central asia and caucasus. central asia and caucasus has always been...

تصدیقی, امیرمحمد, شکرزاده, محمد, شکی, فاطمه, مدانلو, منا,

Background and purpose: Copper is a trace element that is used in various industries. Copper nano-particles are being used in different skin care products, lubricants, oils, polymers, metal covers, plastics, inks, etc. Previous studies have shown that both copper sulfate and copper nano-particles can induce cellular genotoxicity and DNA damage. So, this study aimed at evaluating and comparing g...

2014
Adam Z. Higgins Daniel E. Runyon

approved: ____________________________________________________________ Adam Z. Higgins Freeze-drying, or lyophilization, has shown great promise in addressing many of the logistical challenges of storing and preserving red blood cells (RBCs). A crucial part of any future RBC lyophilization protocol is the primary drying temperature, which affects the sample drying rate and the dried cake’s abil...

Journal: :journal of the japanese society for cold preservation of food 1989

2016
Heloísa Helena de Alcantara Barcellos Fabiana Kalichak João Gabriel Santos da Rosa Thiago Acosta Oliveira Gessi Koakoski Renan Idalencio Murilo Sander de Abreu Ana Cristina Varrone Giacomini Michele Fagundes Cristiane Variani Mainara Rossini Angelo L Piato Leonardo José Gil Barcellos

Here we provide, at least to our knowledge, the first evidence that aripiprazole (APPZ) in the water blunts the stress response of exposed fish in a concentration ten times lower than the concentration detected in the environment. Although the mechanism of APPZ in the neuroendocrine axis is not yet determined, our results highlight that the presence of APPZ residues in the environment may inter...

Journal: :Orthopedics 2015
Tong Yu Limin Xie Fulei Chu

Osteonecrotic collapse of the femoral head is a common refractory disease in orthopedics, and the occurrence of collapse is an important factor in the prognosis of this condition. Osteonecrotic collapse of the femoral head can be delayed or prevented by the formation of a sclerotic rim. This study used finite element analysis to evaluate the mechanical role of a proximal sclerotic rim on stress...

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