Results 221 to 230 of about 3,284,414 (262)
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Mechanical instabilities of homogeneous crystals
Physical Review B, 1995Elastic stability criteria are derived for homogeneous lattices under arbitrary but uniform external load. These conditions depend explicitly on the applied stress and reduce, in the limit of vanishing load, to the criteria due to Born, involving only the elastic constants of the crystal.
, Wang, , Li, , Yip, , Phillpot, , Wolf
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Molecular Mechanisms of TRS Instability
2002To date several neurodegenerative disorders including myotonic dystrophy, Huntington's disease, Kennedy's disease, fragile X syndrome, spinocerebellar ataxias or Friedreich's ataxia have been linked to the expanding trinucleotide sequences. Although phenotypic features vary among these debilitating diseases, the structural abnormalities of the triplet ...
Pawel, Parniewski, Pawel, Staczek
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Mechanisms of tandem repeat instability in bacteria
Mutation Research - Fundamental and Molecular Mechanisms of Mutagenesis, 2006Hypermutable tandem repeat sequences (TRSs) are present in the genomes of both prokaryotic and eukaryotic organisms. Numerous studies have been conducted in several laboratories over the past decade to investigate the mechanisms responsible for expansions and contractions of microsatellites (a subset of TRSs with a repeat length of 1-6 nucleotides) in ...
Bichara, Marc +2 more
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Molecular mechanisms of plaque instability
Current Opinion in Lipidology, 2007Coronary artery thrombosis superimposed on a disrupted atherosclerotic plaque initiates abrupt arterial occlusion and is the proximate event responsible for 60-80% cases of acute coronary syndromes. This article provides a concise update on the evolving concepts in the pathophysiology of plaque rupture and thrombosis.Over the past several years, the ...
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On the flowers‐ruderman instability mechanism
Astronomische Nachrichten, 1981AbstractFlowers und Ruderman untersuchten im Zusammenhang mit Neutronensternen das Stabilitätsverhalten von Konfigurationen, bei denen die magnetischen Feldlinien aus einem elektrisch leitenden Medium, in dem hydrostatisches Gleichgewicht herrscht, in umgebendes Vakuum austreten und wieder zurückgehen.
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Mechanisms of Genomic Instability in Breast Cancer
Trends in Molecular Medicine, 2019Breast cancer is the most common cancer among women globally. Genomic instability (GI) refers to the increased tendency to accrue genomic alterations. It drives heterogeneity and is a hallmark of cancer. Genomic integrity is closely guarded by several mechanisms, including DNA damage checkpoints, the DNA repair machinery, and the mitotic checkpoint ...
Duijf, Pascal H.G. +5 more
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Growth instabilities in mechanical breakdown
Physical Review E, 1994A linear stability analysis of a circular crack growing in an elastic medium in two dimensions is presented. Two boundary conditions at the outer boundary are considered, namely, a constant strain and a constant pressure. Size effects are included by assuming a finite distance between the inner and the outer boundaries.
, Louis, , Guinea
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Mechanisms of combustion instability
Symposium (International) on Combustion, 1965This paper presents results of a study aimed at understanding mechanisms involved in triggering, amplification, and suppression of acoustic waves, due to presence of flames. Experiments performed demonstrate that strong interactions between acoustic and flame oscillations can exist through flow oscillations, and that these interactions are due to ...
Tau-Yi Toong +3 more
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Mechanisms leading to chromosomal instability
Seminars in Cancer Biology, 2005Chromosomal instability is a common feature of cancer cells. Several cellular mechanisms lead to numerical and structural chromosomal instability in cancer cells, including defects in chromosomal segregation, cellular checkpoints that guard against reproduction of abnormal cells, telomere stability, and the DNA damage response.
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Mechanical Instabilities of Gels
Annual Review of Condensed Matter Physics, 2012Although the study of gels undoubtedly takes its roots within the field of physicochemistry, the interest in gels has flourished and they have progressively become an important object in the study of the mechanics of polymeric materials and volumetric growth, raising some fascinating problems, some of them remaining unsolved.
Julien Dervaux, Martine Ben Amar
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