نتایج جستجو برای: 3839 mm

تعداد نتایج: 197919  

2007
Itziar Aretxaga David H. Hughes James S. Dunlop

We present a comparison between the published optical, IR and CO spectroscopic redshifts of 86 (sub-)mm galaxies and their photometric redshifts as derived from long-wavelength (radio–mm–FIR) photometric data. The redshift accuracy measured for 13 sub-mm galaxies with at least one robustlydetermined colour in the radio–mm–FIR regime and additional constraining upper limits is ∆z ≈ 0.30. This ac...

2011
Qun Jane Gu Zhiwei Xu Mau-Chung Frank Chang

This paper presents an effective design methodology and flow, which is validated through three mmwave/sub-mm-wave amplifiers: including W-band LNA with NF=7dB, W-band PA with PAE >11% and D-band amplifier with gain>20dB. The CMOS based amplifiers can be integrated with III-V materials to form heterogeneous integration, such as COSMOS, to achieve the best performance for various applications.

Journal: :IOP Conference Series: Materials Science and Engineering 2020

Journal: :Journal of Physics: Conference Series 2008

Journal: :The Biochemical journal 1978
M A Keighren N C Price

Substrate- and ligand-induced conformational changes were studied in a series of thiol-modified derivatives of rabbit muscle creatine kinase that retained different amounts of enzymic activity. The results indicate that the 'reactive' thiol group of the enzyme is required for the conformational changes associated with formation of a 'transition-state analogue' complex.

Journal: :FEBS letters 1998
J K Rao G Bujacz A Wlodawer

The crystal structure of rabbit muscle creatine kinase, solved at 2.35 A resolution by X-ray diffraction methods, clearly identified the active site with bound sulfates surrounded by a constellation of arginine residues. The putative binding site of creatine, which is occupied by a sulfate group in this analysis, has been tentatively identified. The dimeric interface of the enzyme is held toget...

ژورنال: آموزش و ارزشیابی 2013

این پژوهش با هدف مقایسه سبک‌های حل مسئله و باورهای خودکارآمدی در دانش‌آموزان دوره دبیرستان مدارس نمونه و عادی‌ شهر شبستر در سال تحصیلی 1391-1390 با استفاده از روش تحقیق توصیفی- پیمایشی انجام گرفت. جامعه آماری تحقیق شامل تمامی دانش‌آموزان دبیرستان‌های نمونه و عادی شبستر با تعداد 3839 نفر بود و حجم نمونه 350 نفر با استفاده از روش نمونه‌گیری طبقه‌ای نسبتی انتخاب شد. برای گردآوری داده‌ها از پرسشنام...

2003
Mark S. Gordon Michael W. Schmidt

Recent advances in advanced quantum chemistry and quantum chemistry interfaced with model potentials are discussed, with the primary focus on new scalable implementations in the GAMESS electronic structure suite of programs. Applications to solvent effects and surface science are discussed.

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