Stability
Mostrando 1-12 de 12419 artigos, teses e dissertações.
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1. Thermal and pH stability of "beta-benzyme".
The thermal and pH stability of "beta-benzyme", an artificial chymotrypsin based on beta-cyclodextrin, has been studied and compared with the stability of real chymotrypsin. Artificial chymotrypsin is vastly superior to real chymotrypsin with regard to both temperature and pH stability. The reasons for this increased stability are discussed.
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2. Critical review of the impact of core stability on upper extremity athletic injury and performance
BACKGROUND: Programs designed to prevent or rehabilitate athletic injuries or improve athletic performance frequently focus on core stability. This approach is based upon the theory that poor core stability increases the risk of poor performance and/or injury. Despite the widespread use of core stability training amongst athletes, the question of whether or
Braz. J. Phys. Ther.. Publicado em: 01/09/2015
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3. Acetic Acid Increases Stability of Silage under Aerobic Conditions
The effects of various compounds on the aerobic stability of silages were evaluated. It has been observed that inoculation of whole-crop maize with homofermentative lactic acid bacteria leads to silages which have low stability against aerobic deterioration, while inoculation with heterofermentative lactic acid bacteria, such as Lactobacillus brevis or Lacto
American Society for Microbiology.
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4. Nonparametric stability methods for interpreting genotype by environment interaction of bread wheat genotypes (Triticum aestivum L.)
Evaluation of performance stability and high yield is essential for yield trials conducted in different environments. We determined the stability of 10 bread wheat (Triticum aestivum L.) genotypes (5 cultivars and 5 advanced lines) using nonparametric stability measures and compared nonparametric stability statistics across 19 environments in the Central Ana
Genetics and Molecular Biology. Publicado em: 01/09/2008
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5. Restoration of normal membrane stability to unstable protein 4.1-deficient erythrocyte membranes by incorporation of purified protein 4.1.
Protein 4.1, a principal component of the erythrocyte membrane skeleton, is thought to be important in regulating membrane stability through its interaction with spectrin and actin. A key role for protein 4.1 has been indicated in studies in which deficiency of this protein was shown to result in marked instability of the membrane. In order to obtain direct
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6. Clonal stability of tree dryness in Hevea brasiliensis Muell. Arg.
Clonal stability of tree dryness was evaluated in eleven clones of Hevea brasiliensis at the Rubber Research Institute of Nigeria. The experimental design was the randomized complete block with three replicates and ten trees per replicate. The clones were evaluated in three locations. Four stability parameters were applied. The stability parameters were: env
Genetics and Molecular Biology. Publicado em: 2004
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7. Decreased membrane mechanical stability and in vivo loss of surface area reflect spectrin deficiencies in hereditary spherocytosis.
Whereas marked variations in the clinical manifestations of hereditary spherocytosis have long been recognized, we have only recently begun to define the molecular basis for this heterogeneity. An important unanswered question is whether decreased spectrin results in reduced membrane mechanical stability, and if this reduction in membrane mechanical stabilit
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8. STUDY OF STABILITY OF AN EXAMPLE OF A ACTION OF CONDIMENTION 2 / ESTUDO DA ESTABILIDADE DE UM EXEMPLO DE AÇÃO COMPACTA DE CODIMENSÃO 2
N. Saldanha in his paper Stability of compact actions of Rn of codimension one of 1994, considered an action of R(n) on a manifold of dimension n + 1 which is generated by n vector fields X1;...;Xn such that all its orbits are compact. Here he defined two kinds of stability for an orbit, local and total stability, proving that under certain conditions, these
Publicado em: 2006
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9. Stability in dynamical astronomy*
Hill's concept of stability is generalized and its relation to bifurcation theory is shown. A quantitative measure of stability is introduced that allows the comparison of the stability of different astronomical systems. Theoretical stability limits for triple stellar systems, for planetary systems, and for satellite systems are established. The measure of s
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10. An efficient Shine-Dalgarno sequence but not translation is necessary for lacZ mRNA stability in Escherichia coli.
The 5' ends of many bacterial transcripts are important in determining mRNA stability. A series of Shine-Dalgarno (SD) sequence changes showed that the complementarity of the SD sequence to the anti-SD sequence of 16S rRNA correlates with lacZ mRNA stability in Escherichia coli. Several initiation codon changes showed that an efficient initiation codon is no
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11. VOLTAGE STABILITY PHENOMENON ANALYSIS: TRANSIENT AND LONG TERM TIME DOMAIN SIMULATION / ANÁLISE DO FENÔMENO DA ESTABILIDADE DE TENSÃO NO DOMÍNIO DO TEMPO: SIMULAÇÃO DOS PERÍODOS TRANSITÓRIO E DE LONGO-TERMO
This work is concerned with voltage stability analysis in time domain including transient and long-term time frames. Different power system stability forms are defined and classified according to the variable of interest and with the disturbance magnitude. Using a simple power system model, it is shown through dynamics formulations important aspects of the v
Publicado em: 1997
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12. Determining protein stability in cell lysates by pulse proteolysis and Western blotting
Proteins require proper conformational energetics to fold and to function correctly. Despite the importance of having information on conformational energetics, the investigation of thermodynamic stability has been limited to proteins, which can be easily expressed and purified. Many biologically important proteins are not suitable for conventional biophysica
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