نتایج جستجو برای: ارزش وزنی si

تعداد نتایج: 121088  

2017
I. Kurosawa M. Maezawa M. Aoyagi H. Nakagawa K. Yamamoto S. Matsumoto

We propose a high mobility superconductor gate nMOSFET using undoped Si as the substrate. We have studied superconducting NbN gate nMOSFETs fabricated on p-type Si, undoped Si and n-type Si substrate, respectively. The nMOSFETs on undoped Si and n-type Si have operated properly at 4.2 K. The transconductance of nMOSFETs on undoped Si substrate is higher than that of nMOSFET on p-type Si. The di...

2017
Zhi-Quan Zhou Fei Hu Wen-Jie Zhou Hong-Yan Chen Lei Ma Chi Zhang Ming Lu

Crystalline-Si (c-Si) solar cell with black Si (b-Si) layer at the rear was studied in order to develop c-Si solar cell with sub-band gap photovoltaic response. The b-Si was made by chemical etching. The c-Si solar cell with b-Si at the rear was found to perform far better than that of similar structure but with no b-Si at the rear, with the efficiency being increased relatively by 27.7%. This ...

Journal: :Nano letters 2016
Grace Flynn Quentin M Ramasse Kevin M Ryan

Herein, we report the formation of multisegment Si-Ge axial heterostructure nanowires in a wet chemical synthetic approach. These nanowires are grown by the liquid injection of the respective silicon and germanium precursors into the vapor phase of an organic solvent in which a tin-coated stainless steel substrate is placed. The Si-Ge transition is obtained by sequential injection with the more...

ژورنال: توسعه آبزی پروری 2016
باقرزاده لاکانی, فروزان, حلاجیان, علی, ستاری, مسعود, شریف پور, عیسی, کاظمی, رضوان اله,

فیل­ماهی از ماهیان خاویاری با ارزش اقتصادی دریای خزر می­باشد اما مطالعات محدودی روی نیاز­های اکسیژنی آن صورت گرفته است. در این مطالعه اثر غلظت اکسیژن محلول در آب بر آسیب­شناسی بافت طحال فیل­ماهیان پرورشی در دو گروه وزنی با متوسط وزن 2/49±9/280 و 1/138±9/1217گرم بررسی شد. تیمار­های اکسیژن شامل هیپوکسی (mg/l 3-2)، نورموکسی (mg/l 6- 5) و هیپراکسی (mg/l 10- 9) به مدت هشت هفته بودند. نمونه­های بافت ...

J.K. Xu J.Y. Zhao Yu Shi, Z.W. Yu

The water resource shortage in North China Plain is an increasing threat to the sustainabilityof wheat (Triticum aestivum L.) production. A two-year field experiment was conducted toexamine the effects of two supplemental irrigation (SI) methods on wheat flag leaf senescence,chlorophyll fluorescence and grain yield. The following field treatments were conducted:no irrigation (W0); SI with 60 mm...

Background and Objectives: The construct of spiritual intelligence (henceforth SI) encompasses some kind of adaptation and problem-solving behavior. SI also includes the highest levels of development in diverse cognitive, ethical, emotional, and interpersonal domains. The purpose of this study is thus to examine SI and learning style of high school students in Lamerd, Fars, Iran. Methods: The ...

2016
Bettina Faehnrich Sarah Wagner Chlodwig Franz

Self-incompatible (SI) plants are able to form ideal mother lines for hybrid crossing in hermaphroditic plants, assuring fertilization from the desired father line. To find out suitable ways to maintain SI was the aim of this study. Among 220 plants of German chamomile (Matricaria recutita (L.) Rauschert) within six accessions SI-genotypes were selected. SI was determined as staying seedless in...

2015
Stephen A. Wells Marc W. van der Kamp John D. McGeagh Adrian J. Mulholland Claudio M Soares

Large-scale conformational change is a common feature in the catalytic cycles of enzymes. Many enzymes function as homodimers with active sites that contain elements from both chains. Symmetric and anti-symmetric cooperative motions in homodimers can potentially lead to correlated active site opening and/or closure, likely to be important for ligand binding and release. Here, we examine such mo...

Journal: :American journal of physiology. Endocrinology and metabolism 2000
S McKenzie S M Phillips S L Carter S Lowther M J Gibala M A Tarnopolsky

We studied the effects of a 38-day endurance exercise training program on leucine turnover and substrate metabolism during a 90-min exercise bout at 60% peak O(2) consumption (VO(2 peak)) in 6 males and 6 females. Subjects were studied at both the same absolute (ABS) and relative (REL) exercise intensities posttraining. Training resulted in a significant increase in whole body VO(2 peak) and sk...

Journal: :Systematic and applied microbiology 2004
Ismael Hernández-Lucas Marco Antonio Rogel-Hernández Lorenzo Segovia Keilor Rojas-Jiménez Esperanza Martínez-Romero

Partial nucleotide sequences of the citrate synthase (gltA) gene from different rhizobia genera were determined. Tree topologies based on this housekeeping gene were similar to that obtained using 16S rRNA sequences. However gltA appeared to be more reliable at determining phylogenetic relationships of closely related taxa. We propose gltA sequences as an additional tool to be used in molecular...

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