نتایج جستجو برای: αα
تعداد نتایج: 184 فیلتر نتایج به سال:
Abstract Cosmic Birefringence (CB) is the in-vacuo rotation of linear polarization direction photons during propagation, caused by parity-violating extensions Maxwell electromagnetism. We build low resolution CB angle maps using Planck Legacy and NPIPE products provide for first time estimates cross-correlation spectra C L αE αB between CMB fields. also updated auto-correlation αα as well αT wi...
Christopher Marsh Entanglement is a phenomenon where two particles are linked by some sort of characteristic. A particle such as an electron can be entangled by its spin. Photons can be entangled through its polarization. The aim of this lab is to generate and detect photon entanglement. This was accomplished by subjecting an incident beam to spontaneous parametric down conversion, a process wh...
زمینه و هدف: تالاسمی نوعی کم خونی ارثی است که به صورت الفا و بتا می باشد. بیش از 95 درصد آلفا تالاسمی به علت حذف یک یا دو ژن زنجیره آلفا گلوبین از کروموزوم 6 است(2). در این مطالعه تنوع ژنتیکی 50 نفر از تالاسمی مینور بررسی شده است. روش بررسی: در این مطالعه تحلیلی مقطعی از 17581 نفر اندیکسهای خونی اندازه گیری شد و با نرمافزار SPSS افرادی که MC...
Abstract Background Thalassemia is common in the Iranian population, and it must be considered in the differential diagnosis of the microcytic hypochromic anemia. The molecular analysis of β-thalassemia is necessary for prenatal molecular diagnosis. Α-thalassemia caused by loss of function of either one of the two duplicated α-globin genes or in less frequent non deletion mutations mostly loc...
We compute the complete two–loop O(α) Wilson coefficients relevant for radiative decays of the B meson in the SM. This is a necessary step in the calculation of the O(αα s ln n mb/MW ) corrections and improves on our previous analysis of electroweak effects in B → Xsγ. We describe in detail several interesting technical aspects of the calculation and include all dominant QED matrix elements. In...
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