نتایج جستجو برای: vitamin k3
تعداد نتایج: 100030 فیلتر نتایج به سال:
We have finalized the old (1979) results from [11] about enumeration of connected components of moduli or real polarized K3 surfaces. As an application, using recent results of [13] (see also math.AG/0312396), we completely classify real polarized K3 surfaces which are deformations of real hyper-elliptically polarized K3 surfaces. This could be important in some questions, because real hyper-el...
We consider complex K3 surfaces with a non-symplectic group acting trivially on the algebraic cycles. Vorontsov and Kondō classified those K3 surfaces with transcendental lattice of minimal rank. The purpose of this note is to study the Galois representations associated to these K3 surfaces. The rank of the transcendental lattices is even and varies from 2 to 20, excluding 8 and 14. We show tha...
We show that certain classes of K3 fibered Calabi-Yau manifolds derive from orbifolds of global products of K3 surfaces and particular types of curves. This observation explains why the gauge groups of the heterotic duals are determined by the structure of a single K3 surface and provides the dual heterotic picture of conifold transitions between K3 fibrations. Abstracting our construction from...
We develop and study a D-brane realization of 4D N = 2 super Yang-Mills theory. It is a type IIB string theory compactified on R × K3 and containing parallel 7-branes. It can also be regarded as a subsector of Vafa’s F-theory compactified on K3 × K3 and is thus dual to the heterotic string on K3× T . We show that the one-loop prepotential in this gauge theory is exactly equal to the interaction...
در این مطالعه محتوی فنل و فلاوونوئید کل و فعالیت ضداکسایشی در چهار ژنوتیپ کلخونگ در رویشگاه‌های طبیعی استان ایلام مورد ارزیابی قرار گرفت. فعالیت ضداکسایشی عصاره‌های متانولی برگ به وسیله ظرفیت جمع آوری رادیکال DPPH، ظرفیت جمع آوری رادیکال نیتریت و سنجش FRAP بررسی گردید. در میان نمونه‌های آزمایش شده، عصاره برگ ژنوتیپ‌های K3 و K4 به‌ترتیب دارای بیشترین و کمترین میزان محتوی فنل و فلاوونوئید کل بودن...
در این مطالعه محتوی فنل و فلاوونوئید کل و فعالیت ضداکسایشی در چهار ژنوتیپ کلخونگ در رویشگاه های طبیعی استان ایلام مورد ارزیابی قرار گرفت. فعالیت ضداکسایشی عصاره های متانولی به وسیله ظرفیت جمع آوری رادیکال DPPH، ظرفیت جمع آوری رادیکال نیتریت و سنجش FRAP بررسی گردید. در میان نمونه های آزمایش شده، عصاره برگ ژنوتیپ های K3 و K4 به ترتیب دارای بیشترین و کمترین میزان محتوی فنل و فلاوونوئید کل بودند. ن...
INTRODUCTION The bending and torsional properties of thermomechanically treated K3XF (SybronEndo, Orange, CA) nickel-titanium instruments in relation to their phase transformation behavior were evaluated. METHODS NiTi instruments K3 (SybronEndo) and K3XF, both in sizes 25/.04 and 40/.04, were examined by differential scanning calorimetry and X-ray diffraction. The metal composition was determ...
CpG DNA, a ligand for Toll-like receptor 9 (TLR9), has been one of the most promising immunotherapeutic agents. Although there are several types of potent humanized CpG oligodeoxynucleotide (ODN), developing "all-in-one" CpG ODNs activating both B cells and plasmacytoid dendritic cells forming a stable nanoparticle without aggregation has not been successful. In this study, we generated a novel...
INTRODUCTION New designs and alloys and different motions have been introduced to increase the cyclic fatigue (CF) resistance of nickel-titanium (NiTi) files. The aim of this study was to compare the CF resistance of K3 (SybronEndo, Orange, CA), K3XF (SybronEndo), and TF (SybronEndo) files under continuous rotation and reciprocating motion. METHODS A total of 210 files (30-tip diameter, 0.06 ...
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