Results 261 to 270 of about 538,774 (311)

Physical exercise and the functions of microRNAs

Life Sciences, 2022
MicroRNAs (miRNAs) control RNA translation and are a class of small, tissue-specific, non-protein-coding RNAs that maintain cellular homeostasis through negative gene regulation. Maintenance of the physiological environment depends on the proper control of miRNA expression, as these molecules influence almost all genetic pathways, from the cell cycle ...
João Antonio Celestino, Dos Santos, Allice Santos Cruz, Veras, Victor Rogério Garcia, Batista, Maria Eduarda Almeida, Tavares, Rafael Ribeiro, Correia, Cara Beth, Suggett, Giovana Rampazzo, Teixeira   +6 more
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Physical activity, physical fitness and respiratory function — Exercise and respiratory function

Irish Journal of Medical Science, 1999
The aim of the study was to establish patterns of respiratory function in Northern Ireland and to examine the relationship between physical activity, physical fitness and respiratory function. We identified 1600 adults over 16 yr using 2 stage probability sampling.
D, MacAuley, E, McCrum, A, Evans, G, Stott, C, Boreham, T, Trinick   +5 more
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Silicon physical random functions

Proceedings of the 9th ACM conference on Computer and communications security, 2002
We introduce the notion of a Physical Random Function (PUF). We argue that a complex integrated circuit can be viewed as a silicon PUF and describe a technique to identify and authenticate individual integrated circuits (ICs).We describe several possible circuit realizations of different PUFs.
Blaise Gassend, Dwaine E. Clarke, Marten van Dijk, Srinivas Devadas   +3 more
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On the entropy of Physically Unclonable Functions

2016 IEEE International Symposium on Information Theory (ISIT), 2016
A physically unclonable function (PUF) is a hardware device that can generate intrinsic responses from challenges. The responses serve as unique identifiers and it is required that they be as little predictable as possible. A loop-PUF is an architecture where n single-bit delay elements are chained. Each PUF generates one bit response per challenge. We
Olivier Rioul, Patrick Solé, Sylvain Guilley, Jean-Luc Danger   +3 more
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Muscular strength and physical function

Medicine & Science in Sports & Exercise, 2000
The purpose of this study was to evaluate the potential association of muscular strength and endurance at baseline with the prevalence of functional limitations at follow-up.Study participants were 3,069 men and 589 women (30-82 yr) who received a clinical examination including a strength evaluation at the Cooper Clinic between 1980 and 1989 and ...
Brill, Patricia A., Macera, Caroline A., Davis, Dorothy R., Blair, Steven N., Gordon, Neil F.   +4 more
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On the physical security of physically unclonable functions

2017
Reconfigurable hardware is the primary component of electronic embedded devices employed in several applications ranging from wireless communication to cloud computing. Due to their significant role these modern platforms are targets of intellectual property (IP) piracy and tampering. Cloning of a design or manipulation of its content is carried out by
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Assessing Physical Function in the Elderly

Clinics in Geriatric Medicine, 1987
This article emphasizes the complexity underlying the assessment of physical function. The concept of physical function is multidimensional; individuals or groups can be assessed; the assessments can be either preintervention measures or outcome measures. Six issues of measurement are discussed: verbal report versus behavior; self-reported versus proxy-
L G, Branch, A R, Meyers
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Physical properties and function of phallolysin

Biochemistry, 1983
Phallolysin, a mixture of two to three cytolytic proteins (all of Mr 34 000), has been isolated from Amanita phalloides mushrooms and purified to homogeneity (specific activity 24 000 hemolytic units/mg of protein). After separation by isoelectric focusing, the amino acid composition of two of these proteins has been determined.
Faulstich, H., Bühring , H., Seitz, J.
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Cloning Physically Unclonable Functions

2013 IEEE International Symposium on Hardware-Oriented Security and Trust (HOST), 2013
As system security demands continue to evolve, Physically Unclonable Functions (PUFs) are a promising solution for secure storage on Integrated Circuits (ICs). SRAM PUFs are among the most popular types of PUFs, since they require no additional circuitry and can be implemented with on-die memories such as caches and data memory that are readily ...
Clemens Helfmeier, Christian Boit, Dmitry Nedospasov, Jean-Pierre Seifert   +3 more
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The physical aspects of enzyme functioning

Journal of Theoretical Biology, 1976
The discussion of the thermodynamics and kinetics of protein reactions leads to the conclusion, that for the proteins postulates determining the applicability of Vant'-Hoff and Arrhenins equations are as a rule not fulfilled. It can be explained by the fact that proteins are kinetically unequilibrated structures with rigid memory on various ...
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