نتایج جستجو برای: 2 h 1
تعداد نتایج: 4144838 فیلتر نتایج به سال:
We outline inconsistencies in presently used models for high energy nuclear scattering, which make their application quite unreliable. Many " successes " are essentially based on an artificial freedom of parameters, which does not exist when the models are constructed properly. The problem is the fact that any multiple scattering theory requires an appropriate treatment of the energy sharing be...
In this paper, we calculate the cross-section for the photoproduction of quark-antiquark pairs in the peripheral collision of ultra-relativistic nuclei, by treating the color field of the nuclei within the Color Glass Condensate model. We find that this cross-section is sensitive to the saturation scale Q 2 s that characterizes the model. In particular, the transverse momentum spectrum of the p...
We propose a new U(1) gauge interaction in the bulk in higher dimensional spacetime, which transmits supersymmetry-breaking effects on the hidden brane to the observable our brane. We find that rather small gauge coupling constant of U(1)bulk, αbulk ≃ 5× 10−4, is required for a successful phenomenology. This result implies the compactification length L of the extra dimension to be L−1 ≃ 2×1015 ...
دز قسمت اول فرض بر این است که r یک حلقه نوتری و m یک r- مدول با تولید متناهی است. برای عدد صحیح t اگر مدول کوهمولوژِی موضعی h^i_a m نسبت به ایده آل a برای هر i<t باتولید متناهی باشد انگاه رابطه ی یکریختی بین h^i_a m/xm و حاصلجمع مستقیم h^i_a m و h^i+1 _a m برای هر عضو a- فیلتر منظم ط واقع در یک توان به اندازه کافی بزرگ از a و هر i<t-1 برقرار است. در قسمت دوم فرض بر این است که (r,m) یک حلقه موض...
یازده پلیمر و دیمر کوئوردیناسیونی جدید نقره(i) با ?-دی کتون فلوئوردار و مشتقات لیگاندهای پیریدینی، (1) [ag(4,4-bpy)(hfa)]n، (2) [ag(4,4-bpy)(ttfa)]n، (3) [ag(4,4-bpy)(tfcpb)]n، (4) [ag(4,4-bpy)(tfpb)]، (5) [ag(4,4-bpy)2(tfmpb)]، (6) [ag2(2,3-bpp)2(ttfa)2]، (7) [ag2(2,3-bpp)2(tfpb)2]، (8) [ag2(2,3-bpp)2(ftfa)2]، (9) [ag2(2,3-bpp)2(tfcpb)2]، (10) [ag2(2,3-bpp)2(tfmpb)2]، (11) [ag2(2,3-bpp)2(hfa)2...
Mikroporöse Materialien In der Zuschrift auf S. 17478 berichten Dan Zhao et al. über Tetrazol-funktionalisierte Zirconium-organische Käfige für effiziente C2H2/C2H4- und C2H2/CO2-Stofftrennungen.
An in vitro system using nuclei from parvovirus H-1-infected cells was used to characterize the influence of inhibitors of mammalian DNA polymerases on viral DNA synthesis. The experiments tested the effects of aphidicolin, which is highly specific for DNA polymerase alpha, and 2',3'-dideoxythymidine-5'-triphosphate (ddTTP), which inhibits cellular DNA polymerases in the order gamma greater tha...
Video communication is rapidly becoming one of the most important parts of the information infrastructure. Unlike text or image, video communication requires huge volumes of data being transmitted in a timely manner, so highly efficient compression must be used. In order to allow the interrelation among different kinds of terminals and networks to be implemented, a big effort was done in the la...
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