نتایج جستجو برای: 1270
تعداد نتایج: 876 فیلتر نتایج به سال:
MicroRNAs (miRNAs or miRs) are a class of short non-coding RNAs that serve an important regulatory role in living organisms. These molecules are associated with multiple biological processes and are potential biomarkers in multiple diseases. The present study aimed to further identify miRNAs that are differentially expressed in circulating monocytes (CMCs) from postmenopausal Mexican-Mestizo wo...
We point out that hard exclusive production of tensor mesons f 2 (1270) with helicity λ = ±2 is dominated by the gluon component in the meson wave function and can be used to determine gluon admixture in tensor mesons in a theoretically clean manner. We present a detailed analysis of the tensor meson distribution amplitudes and calculate the transition form factor γ + γ * → f 2 (1270) for one r...
The rare decay $B\rightarrow A\gamma$, with $A$ representing axial-vector mesons such as $K_1 (1270),\; K_1 (1400),\; b_1(1300),\; a_1(1260)$, is studied at next-to-leading order (NLO) in soft collinear effective theory (SCET). large outgoing meson energy encourages the study of an appropriate factorization scheme that separates factorizable and non-factorizable parts systematically. We have an...
OBJECTIVES We tested whether angiotensin converting enzyme (ACE) and phosphorylation of Ser(1270) are involved in shear-stress (SS)-induced downregulation of the enzyme. METHODS AND RESULTS Western blotting analysis showed that SS (18 h, 15 dyn/cm(2)) decreases ACE expression and phosphorylation as well as p-JNK inhibition in human primary endothelial cells (EC). CHO cells expressing wild-typ...
We obtained conclusive linkage of Alzheimer disease (AD) with a candidate region of 19.7 cM at 7q36 in an extended multiplex family, family 1270, ascertained in a population-based study of early-onset AD in the northern Netherlands. Single-nucleotide polymorphism and haplotype association analyses of a Dutch patient-control sample further supported the linkage at 7q36. In addition, we identifie...
Charmed meson decays into a pseudoscalar meson P and a tensor meson T are studied. The charm to tensor meson transition form factors are evaluated in the Isgur-Scora-Grinstein-Wise (ISGW) quark model. It is shown that the Cabibbo-allowed decay D+ s → f2(1270)π is dominated by the W -annihilation contribution and has the largest branching ratio in D → TP decays. We argue that the Cabibbo-suppres...
تحول در فرهنگ سیاسی، به معنای تغییر نگرش نسبت به سیاست است و آنچه به نگرش افراد و توده ها به سیاست شکل می دهد ، مجموعه ای از باورها، ارزشها و معتقدات است. سیاست نیز فرایند اتخاذ تصمیم و اجرای آن درامور عمومی توسط اجزای نهادی است که حکومت خوانده می شود. بنابراین تحول در فرهنگ سیاسی به معنای تحول در نگرش افراد و توده ها نسبت به حکومت و اجزای آن است. آغاز فرایند ، دامنه ، میزان و دوره زمانی تحول ت...
With t-channel ρ, f 2 (1270) exchange and the ππ → ρρ → ππ box diagram contribution, we reproduce the ππ isotensor S-wave and D-wave scattering phase shifts and inelasticities up to 2.2 GeV quite well in a K-matrix formalism. The t-channel ρ exchange provides repulsive negative phase shifts while the t-channel f 2 (1270) gives an attractive force to increase the phase shifts for ππ scattering a...
In the f 2 (1270) − f ′ 2 (1525) mixing framework, the isoscalar singlet-octet mixing angle for 1 3 P 2 tensor nonet is determined to the value of 27.5 • and the decays of the two states are investigated. Comparing the predicted results of the decays of the two states with the available experimental data, we find that the predicted results are in good agreement with the experimental data, which...
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