Distributed data structures are those that are shared by parallel processes. They provide a flexible and useful mechanism for parallel programming. This paper shows how distributed data structures can be programmed in a simple paradigm called 4P (short for procedures with preconditions as parallel programs). In the 4P paradigm, processes can specify different modes of access to the required par...

The universal response of a sudden created core hole, predicted to occur on an attosecond (10(-18)  s) time scale, lacks an experimental demonstration. With a two-dimensional coincidence spectrometer, we demonstrate an extensive energy sharing between the Ag 4p photoelectron and the N2,3VV Auger electron exceeding 10 eV. This energy width provides access to the time scale of the emission proces...

The P genome of Agropyron cristatum Gaertn. contains many desirable genes that can be utilized as genetic resources to improve wheat. In this research, we used both the gametocidal chromosome 2Cc and pairing homologous gene (Ph1b) mutant induce structural aberrations translocations between wheat 4P, 5P, 6P chromosomes. By using two approaches, a total 19 wheat-A. have been identified, in which ...

We have reconstituted in vitro the four snRNPs known to be involved in pre-mRNA splicing: U1, U2, U5, and U4/6. Reconstitution involves adding either authentic or in vitro-synthesized snRNAs to extracts enriched in snRNP structural polypeptides. The reconstituted snRNPs have the same buoyant density and are immunoprecipitated by the same antibodies as authentic snRNPs. Thus, the polypeptide com...

We describe the isolation and molecular characterization of seven distinct proteins present in human [U4/U6.U5] tri-snRNPs. These proteins exhibit clear homology to the Sm proteins and are thus denoted LSm (like Sm) proteins. Purified LSm proteins form a heteromer that is stable even in the absence of RNA and exhibits a doughnut shape under the electron microscope, with striking similarity to t...

هدف: طی سال‌های اخیر دولت کارآفرین با تأکید بر بازآفرینی به‌‌عنوان یکی از رویکردهای مدیریت دولتی نوین در بسیاری کشورهای جهان مطرح شده است که این موضوع نیاز به شناسایی عوامل مؤثر ایجاد و توسعه شکل دارد. بنابراین، پژوهش حاضر هدف پیشران‌های انجام است.طراحی/ روش‌شناسی/ رویکرد: راهبرد تحلیل محتوای کیفی رویکرد قیاسی چارچوب پژوهشی اسنادی استفاده همچنین، تدوین کدگذاری مناسب برای اجرای روش فراترکیب است....

The effect of core geometry constraints hydrogenase H-cluster analogues on reduction chemistry have been explored by a combination structural, electrochemical and IR spectroelectrochemical (IR-SEC) studies. A series phosphido-bridged diiron hexacarbonyl complexes, Fe2(µ2-PPh2(CH2)xPPh2)(CO)6, x = 2 (2P) 4 (4P) previously reported with 3 (3P) the unlinked bis-diphenylphosphido (DP) were investig...