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سابقه و هدف: مایکوباکتریوم توبرکلوزیس باکتری عامل بیماری سل است که سالانه حدود 2 میلیون نفر بر اثر ابتلا به این بیماری جان خود را از دست می دهند. وجود باکتری های مقاوم به دارو های ضد سلی از عوامل مهم مرگ افراد مبتلا به سل است. از جمله مهم ترین این داروها، داروی ریفامپیسین است که به نظر می رسد مکانیسم عملکرد این دارو، دخالت در فرایند رونویسی از طریق اتصال به زیرواحد β آنزیم RNA پلیمر از می باشد....
This paper addresses the development of homogenized energy models which characterize the ferroelastic switching mechanisms inherent to ferroelectric materials in a manner suitable for subsequent transducer and control design. In the first step of the development, we construct Helmholtz and Gibbs energy relations which quantify the potential and electrostatic energy associated with 90 and 180 di...
Yang Zhang, Xin Zhang, Kai Wang, Jian He, L. Ruby Leung, Jiwen Fan, and Athanasios 3 Nenes 5 4 5 Department of Marine, Earth, and Atmospheric Sciences, North Carolina State University, Raleigh, North Carolina, 6 USA. 7 Collaborative Innovation Center for Regional Environmental Quality, Beijing 100084, China} 8 Pacific Northwest National Laboratory, Richland, Washington, USA. 9 School of Earth a...
We present a summary of investigations on the use of proper orthogonal decomposition (POD) techniques as a reduced basis method for computation of feedback controls and compensators in a high pressure chemical vapor deposition (HPCVD) reactor that includes multiple species and controls, gas phase reactions, and time dependent tracking signals that are consistent with pulsed vapor reactant input...
Calcium-/calmodulin-dependent protein kinase II (CaM kinase II), a decoder of Ca(2+) signals, and cytosolic phospholipase A(2) (cPLA(2)), an enzyme involved in arachidonate release, are involved in many physiological and pathophysiological processes. Activation of CaM kinase II in norepinephrine-stimulated vascular smooth muscle cells leads to activation of cPLA(2) and arachidonic acid release....
Thermal properties of borate crystals for high power optical parametric chirped-pulse amplification.
The potential of borate crystals, BBO, LBO and BiBO, for high average power scaling of optical parametric chirped-pulse amplifiers is investigated. Up-to-date measurements of the absorption coefficients at 515 nm and the thermal conductivities are presented. The measured absorption coefficients are a factor of 10-100 lower than reported by the literature for BBO and LBO. For BBO, a large variat...
INTRODUCTION The aim of the present study was to assess the polymerase chain reaction (PCR) as a method for detecting Trypanosoma cruzi infection in triatomines that had been previously determined by microscopic examination in the State of Mato Grosso do Sul, Brazil. METHODS In total, 515 specimens were collected. Material from the digestive tract of each triatomine was analyzed for the prese...
We report on the frequency doubling of femtosecond laser pulses at 1030 nm center wavelength generated from the fully diode-pumped laser system POLARIS. The newly generated pulses at a center wavelength of 515 nm have a pulse energy of 3 J with a pulse duration of 120 fs. On the basis of initially ultra-high contrast seed pulses we expect a temporal intensity contrast better 10 200 ps before th...
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