نتایج جستجو برای: 2t
تعداد نتایج: 1581 فیلتر نتایج به سال:
Two-time physics (2T) is a general reformulation of one-time physics (1T) that displays previously unnoticed hidden symmetries in 1T dynamical systems and establishes previously unknown duality type relations among them. This may play a role in displaying the symmetries and constructing the dynamics of little understood systems, such as M-theory. 2T physics describes various 1T dynamical system...
We construct a field theoretic version of 2T-physics including interactions in an action formalism. The approach is a BRST formulation based on the underlying Sp(2, R) gauge symmetry, and shares some similarities with the approach used to construct string field theory. In our first case of spinless particles, the interaction is uniquely determined by the BRST gauge symmetry, and it is different...
BACKGROUND AND PURPOSE Oxidant stress, especially in the premature, plays a major role in the pathogenesis of hypoxic-ischemic encephalopathies mostly manifested in the periventricular region. We studied the vasomotor mode of actions of the peroxidation product 15-F(2t)-isoprostane (15-F(2t)-IsoP) (8-iso-prostaglandin F(2alpha)) on periventricular region during development. METHODS Effects of...
In this correspondence, we investigate two important structural properties of block 2tary PSK modulation codes, namely: linear structure and phase symmetry. For an AWGN channel, the error performance of a modulation code depends on its squared Euclidean distance distribution. Linear structure of a code makes the error performance analysis much easier. Phase symmetry of a code is important in re...
سابقه و هدف: سطح رضایت مندی، ﯾﮏ ﺷﺎﺧﺺ مهم در ﺳﻨﺠﺶ ﮐﯿﻔﯿﺖ ارایه ﺧﺪﻣﺎت است و ارﺗﻘﺎء ﮐﯿﻔﯿﺖ ﺧﺪﻣﺎت ارایه ﺷﺪه در بخش های مختلف یک کلینیک فوق تخصصی، ﻧﯿـﺎز ﺑـﻪ ﺷﻨﺎﺧﺖ ﺻﺤﯿﺢ وﺿﻌﯿﺖ ﻣﻮﺟﻮد و ﺑﺮرﺳﯽ ﻣﺸﮑﻼت ﺑﺨﺶ ﻫـﺎ دارد. مطالعه حاضر با هدف تعیین کاربرد آزمون t2- هتلینگ در بررسی میزان رضایتمندی و عوامل مرتبط با آن در بیماران مراجعه کننده از خدمات درمانی کلینیک طوبی ساری در سال 1394 می باشد. مواد و روش ها: این مطالع...
A moderately halophilic, gram-positive, spore-forming bacterium was isolated from surface saline soil of the Karaj region, Iran. The strain, designated MA-2T, was strictly aerobic with rod-shaped cells that occurred singly, in pairs or short chains. It contained L-Om-D-Asp-type peptidoglycan and the major respiratory lipoquinone was MK-7. It was non-motile and had an ellipsoidal endospore locat...
Proposition 1.1: There exists a [2, 1, 1]-GDC(5) of type 2 with size 2t(t − 1) for each t ∈ {9, 11}, which is also an optimal (2t, 5, [2, 1, 1])4-code. Proof: For each t ∈ {9, 11}, let Xt = Z2t, Gt = {{i, t+ i} : i ∈ Zt} and Ct be the set of cyclic (or quasi-cyclic) shifts of the vectors generated by the following vectors respectively. Then (Xt,Gt, Ct) is a [2, 1, 1]-GDC(5) of type 2 with size ...
BACKGROUND In the present study we aimed: 1) To establish the prevalence and clinical impact of DFNB49 mutations in deaf Roma from 2 Central European countries (Slovakia and Hungary), and 2) to analyze a possible common origin of the c.1331+2T>C mutation among Roma and Pakistani mutation carriers identified in the present and previous studies. METHODS We sequenced 6 exons of the MARVELD2 gene...
To evaluate the role of oxidative stress in breast cancer, we measured urinary levels of 15-F(2t)-isoprostane (15-F(2t)-IsoP) and 8-oxodeoxyguanosine (8-oxodG) in 400 cases and 401 controls, participants of the Long Island Breast Cancer Study Project. We also analyzed the effect of different factors that are associated with oxidative stress and might influence 15-F(2t)-IsoP and 8-oxodG levels. ...
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