نتایج جستجو برای: prevent fragmentation

تعداد نتایج: 210681  

One of the key outcomes of blasting in mines is found to be rock fragmentation which profoundly affects downstream expenses. In fact, size prediction of rock fragmentation is the first leap towards the optimization of blasting design parameters. This paper makes an attempt to present a model to predict rock fragmentation using Mutual Information (MI) in Meydook copper mine. Ten parameters are c...

2011
Grazyna Nowak Diana Bakajsova Allen M. Samarel

Nowak G, Bakajsova D, Samarel AM. Protein kinase C-ε activation induces mitochondrial dysfunction and fragmentation in renal proximal tubules. Am J Physiol Renal Physiol 301: F197–F208, 2011. First published February 2, 2011; doi:10.1152/ajprenal.00364.2010.—PKC-ε activation mediates protection from ischemia-reperfusion injury in the myocardium. Mitochondria are a subcellular target of these pr...

Journal: :FASEB journal : official publication of the Federation of American Societies for Experimental Biology 1993
S D Ray L M Kamendulis M W Gurule R D Yorkin G B Corcoran

Ca2+ accumulates in the nucleus and DNA undergoes enzymatic cleavage into internucleosome-length fragments before acetaminophen and dimethylnitrosamine produce hepatic necrosis in vivo and toxic cell death in vitro. However, Ca(2+)-endonuclease fragmentation of DNA is characteristic of apoptosis, a type of cell death considered biochemically and functionally distinct from toxic cell death. The ...

2017
Xiao Yang Hua Wang Hong-Min Ni Aizhen Xiong Zhengtao Wang Hiromi Sesaki Wen-Xing Ding Li Yang

Pyrrolizidine alkaloids (PAs) are a group of compounds found in various plants and some of them are widely consumed in the world as herbal medicines and food supplements. PAs are potent hepatotoxins that cause irreversible liver injury in animals and humans. However, the mechanisms by which PAs induce liver injury are not clear. In the present study, we determined the hepatotoxicity and molecul...

Journal: :iranian biomedical journal 0
fatemeh torkashvand biotechnology research center, pasteur institute of iran, tehran, iran behrouz vaziri biotechnology research center, pasteur institute of iran, tehran, iran

the culture media optimization is an inevitable part of upstream process development in therapeutic monoclonal antibodies (mabs) production. the quality by design (qbd) approach defines the assured quality of the final product through the development stage. an important step in qbd is determination of the main quality attributes. during the media optimization, some of the main quality attribute...

Journal: :acta medica iranica 0
mianabadi m sadeghi h yazdanparast r

prolonged local consumption of anethum graveolens leaves, as an antihyperlipimic and antihypercholesterolemic agent, has been associated in some patients with skin disorders such as darkening and pigmentation mainly in the exposed areas such as face and hands.anethum graveolens belongs to the umbelliferae family which is belived to be rich in photoactive furocoumarins. an oraganic extract of th...

Journal: :journal of reproduction and infertility 0

background: the initial step in the diagnostic investigation of male infertility has been traditionally based on the conventional seminal profile. however, there are significant limitations regarding its ability to determine the underlying mechanisms that cause the disorder. sperm dna fragmentation has emerged as a potential causative factor of reproductive failure and its assessment has been s...

Journal: :Cancer research 1997
P Huang K Ballal W Plunkett

Cleavage of cellular DNA into high molecular weight (predominantly 50 kb) fragments is an early event during apoptosis. We previously reported that this fragmentation was a Ca2+-independent process during apoptosis, which was induced by anticancer agents in human leukemia cells. The present study demonstrated that a high molecular weight DNA fragmentation activity (HDFA) was induced in the drug...

2006
Alain-Théophile Sanà Richard Bertrand

Monocytic-like leukemia U-937 cells rapidly undergo morphological changes and DNA fragmentation that is typical of apoptosis following treatment with DNA topoisomerase I inhibitor [20-S-camptothecin lactone (CPT)]. The tripeptide derivative benzyloxycarbonyl-Val-Ala-Asp(OMe)fluoromethyl ketone blocks Asp-Glu-Val-Asp-ase (DEVDase) activity and prevents the occurrence of high molecular weight and...

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