نتایج جستجو برای: escape frequency

تعداد نتایج: 513175  

2017
Jie Zhang Li-Ming Liu Jin-Feng Ni

The number of children suffered from autism spectrum disorder (ASD) is increasing dramatically. However, the etiology of ASD is not well known. This study employed mammalian target of rapamycin inhibitor rapamycin to explore its effect on ASD and provided new therapeutic strategies for ASD. ASD rat model was constructed and valproic acid (VPA) was injected intraperitoneally into rats on pregnan...

2008
D. Hennig P. Hänggi

We study the collective escape dynamics of a chain of coupled, weakly damped nonlinear oscillators from a metastable state over a barrier when driven by a thermal heat bath in combination with a weak, globally acting periodic perturbation. Optimal parameter choices are identified that lead to a drastic enhancement of escape rates as compared to a pure noise-assisted situation. We elucidate the ...

2004
Jesús Casado-Pascual José Gómez-Ordóñez Manuel Morillo

A Markovian dichotomic system driven by a deterministic time-periodic force is analyzed in terms of the statistical properties of the switching events between the states. The consideration of the counting process of the switching events leads us to define a discrete phase. We obtain expressions for the instantaneous output frequency and phase diffusion associated to the dichotomic process, as w...

2011
Luciana M Hollanda Gisele CG Cury Rafaella FC Pereira Gracielle A Ferreira Andreza Sousa Edesia MB Sousa Marcelo Lancellotti

BACKGROUND This study aimed the use of mesoporous silica under the naturally transformable Neisseria meningitidis, an important pathogen implicated in the genetic horizontal transfer of DNA causing a escape of the principal vaccination measures worldwide by the capsular switching process. This study verified the effects of mesoporous silica under N. meningitidis transformation specifically unde...

Journal: :iranian journal of allergy, asthma and immunology 0
azam ghaziasadi hepatitis b molecular laboratory, department of virology, school of public health, tehran university of medical sciences, tehran, iran seyed moayed alavian baqiyatallah university of medical sciences, baqiyatallah research centre for gastroenterology and liver disease, tehran, iran mahdi norouzi hepatitis b molecular laboratory, department of virology, school of public health, tehran university of medical sciences, tehran, iran zeinab fazeli hepatitis b molecular laboratory, department of virology, school of public health, tehran university of medical sciences, tehran, iran seyed mohammad jazayeri hepatitis b molecular laboratory, department of virology, school of public health, tehran university of medical sciences, tehran, iran

hepatitis b vaccination is safe and effective, although breakthrough infection occasionally occurs in those who receive the vaccine and hepatitis b immunoglobulin (hbig) prophylaxis. sequence variation in their antigenic regions is one of the most powerful strategies that are used by viruses to escape recognition by b and t cell-mediated immune responses. the aim of this study was to explore th...

Journal: :iranian journal of diabetes and obesity 0
farzaneh najafi assistant professor division of nephrology, yazd diabetes research center, yazd. iran bibi saideh rezvaninejad resident of internal medicine, division of nephrology, department of internal medicine, shaheed sadoughi university of medical sciences and health services, yazd, iran. seyed mohammad mohammadi assistant professor of endocrinology, yazd diabetes research center, shahid sadoughi university of medical sciences, yazd, iran

abstract objectives: interruption of rennin-angiotensin-aldosterone system has become a leading therapeutic strategy in the treatment of diabetic nephropathy however, aceis and arbs do not uniformly suppress the rennin-angiotensin-aldosterone system. plasma aldosterone levels are elevated in a group of patients despite therapy and this phenomenon known as aldosterone escape or aldosterone break...

1999
Elias Kiritsis Georgios Kofinas

The cosmological equations suggested by the non-relativistic renormalizable gravitational theory proposed by Hořava are considered. It is pointed out that the early universe cosmology has features that may give an alternative to inflation and the theory may be able to escape singularities.

2017
Carlos Mario Jaramillo Fernando de La Hoz Alexandra Porras Diana di Filippo Luz Angela Choconta-Piraquive Edra Payares Neyla Montes Maria-Cristina Navas

BACKGROUND Hepatitis B Virus (HBV) infection is a worldwide public health problem. In the 1980's a highly effective and safe vaccine against HBV was developed, although breakthrough infection still occasionally occurs because of the emergence of escape mutants. The aim of this study was to identify HBV genotypes and escape mutants in children and their mothers in Amerindian communities of the A...

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