نتایج جستجو برای: mcm 48

تعداد نتایج: 145740  

2003
A. Jentys

Highly dispersed Co particles in MCM-41 were prepared by direct addition of CoCIz to the synthesis gel. The small clusters of Co did not sinter during reduction and sulfidation. Incorporation of Co into the MCM-41 lattice was not observed. The addition of Co to the synthesis gel did not alter the structural characteristics of the MCM-41 samples.

2003
Guixiu Qiao Roberto Lu Charles McLean

Mass customization manufacturing (MCM) has been gaining recognition as an industrial revolution in the 21st century. This paper presents innovative approaches in realizing and exercising MCM in theoretical and practical applications. Strategies of generalized production line platform and modularization are explored to support dynamic reconfigurations of MCM. NIST’s XML-based Shop Data informati...

2003
Quanchang Li Suzanne E. Brown Linda J. Broadbelt Jian-Guo Zheng

A novel MCM-41-supported base catalyst, Ba-MCM-41, was synthesized with a modified impregnation method. Ba2SiO4 was synthesized on the MCM-41 pore wall as confirmed by characterization using X-ray diffraction, X-ray photoelectron spectroscopy, X-ray fluorescence, N2 adsorption, Si MAS NMR and transmission electron microscopy. It was also demonstrated that a highly ordered Ba-MCM-41 catalyst wit...

2015

In the last two decades, many efficient algorithmsand architectures have been introduced for the design of lowcomplexity bit-parallel multiple constant multiplications (MCM)operation which dominates the complexity of many digital signalprocessing systems. On the other hand, little attention has beengiven to the digitserial MCM design that offers alternative lowcomplexityMCM operations albeit at...

2010
Kohji Yamamoto Yoichi Aso Hiroshi Fujii

The minichromosome maintenance protein (MCM) family is involved in the regulatory role of DNA replication in eukaryotic organisms. A cDNA encoding of an MCM of the silkworm, Bombyx mori L. (Lepidoptera: Bombycidae), was cloned by reverse transcriptase-polymerase chain reaction (RT-PCR) and sequenced. The resultant amino acid sequence and phylogenetic analysis revealed high identity to MCM, and ...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2009
Elizabeth R Barry Janet E Lovett Alessandro Costa Susan M Lea Stephen D Bell

The minichromosome maintenance (MCM) helicase is the presumptive replicative helicase in archaea and eukaryotes. The archaeal homomultimeric MCM has a two-tier structure. One tier contains the AAA+ motor domains of the proteins, and these are the minimal functional helicase domains. The second tier is formed by the N-terminal domains. These domains are not essential for MCM helicase activity bu...

Journal: :Nucleic acids research 1998
D A Sherman S L Forsburg

MCM proteins are required for the proper regulation of DNA replication. There are six MCM proteins in all eukaryotes which interact to form a large complex. We report the cloning of fission yeast mcm3 +. mcm3 + is essential and spores carrying a Delta mcm3 disruption arrest with an apparently replicated DNA content. The protein is found constitutively in the nucleus and levels remain constant t...

Journal: :Current Biology 2000
Van Q. Nguyen Carl Co Kaoru Irie Joachim J. Li

BACKGROUND In the budding yeast Saccharomyces cerevisiae, the cyclin-dependent kinases of the Clb/Cdc28 family restrict the initiation of DNA replication to once per cell cycle by preventing the re-assembly of pre-replicative complexes (pre-RCs) at replication origins that have already initiated replication. This assembly involves the Cdc6-dependent loading of six minichromosome maintenance (Mc...

Journal: :World Journal of Advanced Engineering Technology and Sciences 2023

This review focuses on our research findings about efficiency of different nano materials synthesized by us for photocatalytic hydrogen production from industrial wastes. Lab-scale reactors were fabricated liquid phase alkaline waste streams and gaseous sulfide. The effects operating parameters namely pH, flow rate, light intensity, depth, sulfide sulphite concentration investigated 7 photocata...

ژورنال: :فرآیندهای نوین در مهندسی مواد 0
علی قلمزن کارشناس ارشد، دانشکده مهندسی مواد، واحد نجف آباد، دانشگاه آزاد اسلامی، نجف آباد امیر عباس نوربخش دانشیار، دانشکده فنی و مهندسی، واحد شهرضا، دانشگاه آزاد اسلامی، شهرضا، اصفهان مجتبی نصر اصفهانی استادیار، دانشکده مهندسی مواد، واحد نجف آباد، دانشگاه آزاد اسلامی، نجف آباد روزبه جواد کلباسی استادیار، دانشکده شیمی، واحد شهرضا، دانشگاه آزاد اسلامی، شهرضا، اصفهان

در تحقیق حاضر نقش افزودنی آهن بر سنتز نیترید سیلیسیوم به روش کربوترمال و نیتریداسیون از پیش سازه  سیلیکاتی mcm-48 و عامل کربنی ساکاروز بررسی شد. ابتدا مزوحفره سیلیکاتی سنتز گردید. سپس با استفاده از انحلال mcm-48 و ساکاروز در آب دو بار تقطیر و خشک نمودن رسوبحاصله، مخلوط های دو تایی آماده شد. جهت بررسی نقش آهن، با افزودن آهن در محدوده یک، دو و سه درصد وزنی به مخلوط فوق، سیستم های سه تایی نیز آماد...

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