نتایج جستجو برای: reversibility

تعداد نتایج: 6814  

Journal: :Journal of abnormal psychology 1976
J F Kihlstrom F J Evans

Documentation of the reversibility of posthypnotic amnesia has been hampered by the correlation of hypnotizability with the initial level of response to amnesia suggestions. In a sample of 691 subjects, groups differing in hypnotic susceptibility could be matched for initial amnesia recall, thereby eliminating the ceiling effect. At virtually every point along the distribution of initial amnesi...

2009
Hideo Osawa Tokoha Gakuen Hamamatsu

The present paper studies a discrete-time storage process with discrete states. This model has the inflow which is defined as independent random variables with a common negative binomial distribution and has the certain outflow discipline. Reversibility and quasi-reversibility for the process are investigated and the reversible measure is given. And thus, under a certain condition, it is shown ...

2008
HONG QIAN

We prove the equivalence among symmetricity, time reversibility, and zero entropy production of the stationary solutions of linear stochastic differential equations. A sufficient and necessary reversibility condition expressed in terms of the coefficients of the equations is given. The existence of a linear stationary irreversible process is established. Concerning reversibility, we show that t...

2006
Claudia Roberta Calidonna Adele Naddeo

Reversibility is a concept widely studied in physics as well as in computer science. Reversible computation is characterized by means of invertible properties [1]. Quantum systems evolution is described by the time evolution operator U , which is unitary and invertible; therefore such systems can implement reversibility. Reversible/invertible Cellular Automata (CA) [1] are one of the most relev...

Journal: :Physical review. E, Statistical, nonlinear, and soft matter physics 2012
James Grant Robert L Jack

We present dynamic measurements of a lattice gas during phase separation, which we use as an analogy for self-assembly of equilibrium ordered structures. We use two approaches to quantify the degree of reversibility of this process: First, we count events in which bonds are made and broken; second, we use correlation-response measurements and fluctuation-dissipation ratios to probe reversibilit...

Journal: :iranian journal of nuclear medicine 0
vahid reza dabbagh kakhki nuclear medicine research center, ghaem hospital, mashhad university of medical sciences, mashhad, iran ali eshraghi cardiovascular department, imam reza hospital, mashhad university of medical sciences. mashhad, iran narjes ayati nuclear medicine research center, ghaem hospital, mashhad university of medical sciences, mashhad, iran mohammad vojdanparast cardiovascular department, imam reza hospital, mashhad university of medical sciences. mashhad, iran ramin sadeghi nuclear medicine research center, ghaem hospital, mashhad university of medical sciences, mashhad, iran azadeh rezvani khorashad nuclear medicine research center, ghaem hospital, mashhad university of medical sciences, mashhad, iran

introduction:patients with the coronary slow flow phenomenon (scf) frequently experience angina episodes. the purpose of this study was to determine efficacy of nicorandil in myocardial perfusion in patients with scf. methods: twenty patients (50.85 ± 12.96 y) with scf were studied.  we evaluate coronary slow flow according to protracted thrombolysis in myocardial infarction (timi) frame count....

2009
Antonella Pellicoro Prakash Ramachandran John P Iredale

Liver cirrhosis is a major cause of morbidity and mortality worldwide and has very limited therapeutic options. Regardless of the aetiology, hepatic fibrosis is a characteristic feature of chronic liver disease. Our knowledge regarding the pathogenesis of this scarring has grown exponentially in the past 25 years. It has now clear that this is a highly dynamic process and the long-held dogma th...

Journal: :Journal of medical ethics 1992
D J Cole

The ordinary concept of death is analysed and compared with revisionary medical definitions, especially those based on irreversible loss of brain function. Prior critics of revisionary definitions have focused on the locus, the brain; I am concerned with the irreversibility condition. I argue that 1) the irreversibility condition is ambiguous, 2) it has unacceptable epistemic and other conseque...

2009
H. Narnhofer

We start with a modular K-system that possesses Anosov endomorphisms in both time directions. We extend the system via a crossed product construction. If one of the Anosov endomorphisms can be extended, then also the other one. Also the extensions form a Moebius group and allow a time reeection operator that implements on the algebra an antiisomorphism.

Journal: :British journal of industrial medicine 1983
P Grandjean G Thomsen

At two x ray examinations in 1957 and 1967, 17 cases of skeletal fluorosis were identified among long term cryolite workers in Copenhagen. In 1982 four of these patients were alive, eight to 15 years after exposure had ended. Radiographs were obtained, and the urinary fluoride excretion was measured. A similar picture emerged in all four cases: extensive fading of the sclerosis of trabecular bo...

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