نتایج جستجو برای: pi 250202 4
تعداد نتایج: 1339456 فیلتر نتایج به سال:
Figure 1: Phase mode AFM image of directionally crystallized P3HT, revealing the unique grain structure. The white arrow indicates the direction of the fiber axis and polymer chain axis. The scan is 4 by 4 μm. (Left) The cartoon shows a possible orientation of crystallites within the directionally crystallized film, as derived from XRD. Red crystallites are “edge-on” with their pi-pi stacking r...
Abstract A set S of permutations is forcing if for any sequence $\{\Pi_i\}_{i \in \mathbb{N}}$ where the density $d(\pi,\Pi_i)$ converges to $\frac{1}{|\pi|!}$ every permutation $\pi S$ , it holds that quasirandom. Graham asked whether there exists an integer k such all order forcing; this has been shown be true $k\ge 4$ . In particular, 24 4 forcing. We provide first non-trivial lower bound on...
In this paper, we study the pion leading-twist distribution amplitude (DA) ${\ensuremath{\phi}}_{2;\ensuremath{\pi}}(x,\ensuremath{\mu})$ by improving traditional light-cone harmonic oscillator model within reconstruction of function ${\ensuremath{\varphi}}_{2;\ensuremath{\pi}}(x)$. order to constrain parameters, calculate its moments $?{\ensuremath{\xi}}^{n}{?}_{2;\ensuremath{\pi}}{|}_{\ensure...
Phosphatidylinositol 3'-kinase (PI 3-kinase) catalyzes the formation of 3' phosphoinositides and has been implicated in an intracellular signaling pathway that inhibits apoptosis in both neuronal and hemopoietic cells. Here, we investigated two potential downstream mediators of PI 3-kinase, the serine/threonine p70 S6-kinase (S6-kinase) and the antiapoptotic protein B cell lymphoma-2 (Bcl-2). S...
Stable pi-dimers are formed upon oxidation of the model units of proposed calix[4]arene-based molecular actuators in a solvent of low dielectric constant (CH 2Cl 2) at room temperature. Evidence from UV-vis, EPR, and DPV are all in agreement with the pi-dimer formation. In addition, pi-dimer formation is dependent upon the conformational flexibility of the calix[4]arene hinge.
Parent involvement (PI) in school is associated with more positive academic performance and social competence in children. However, there are inadequacies in current measures of PI and a need for a better understanding of predictors of PI. In this study, measures were obtained from a normative sample of 387 children in kindergarten and first grade from high-risk neighborhoods in 4 different sit...
Inorganic phosphate (Pi) plays a critical role in diverse cellular functions, and regulating the Pi balance is accomplished by sodium-dependent Pi co-transporter (NPT). Pulmonary NPT has recently been identified in mammalian lungs. However, to date, many of the studies that have involved Pi have mainly focused on its effect on bone and kidney. Therefore, current study was performed to discover ...
The decays of the tau lepton which involve the eta meson are examined within the standard model. Such modes are prime candidates to comprise the approximately 7% of tau decays (with a one-prong topology) that are not assignable to known exclusive channels. It is shown that the combination of existing electronpositron annihilation data and measurements of five-prong tau decays prevents modes inv...
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