中国科学院机构知识库网格系统: 检索

Ecological stoichiometry-based study of the influence of soil saline-alkali stress on nutrient homeostasis in L. chinensis 期刊论文 OAI收割
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY, 2018, 卷号: 165, 页码: 243-249
作者: Liu, Yi; Wang, Yuejiao; Li, Shujie; Liu, Hongshan; Li, Qingyu

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收藏 | 浏览/下载：94/0 | 提交时间：2018/12/29

Homeostasis model Ecological stoichiometry L. chinensis Saline-alkali stress N and P addition

Prediction of the combined effects of multiple estrogenic chemicals on MCF-7 human breast cancer cells and a preliminary molecular exploration of the estrogenic proliferative effects and related gene expression 期刊论文 OAI收割
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY, 2018, 卷号: 160, 页码: 1-9
作者: Wang, Zijian; Rao, Kaifeng; Ma, Mei; Ji, Xiaoya; Huang, Chao

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收藏 | 浏览/下载：60/0 | 提交时间：2019/06/24

Environmental estrogens Combined effects Cell proliferation Addition model Estrogen receptors

Fukui Function and Local Softness Related to the Regioselectivity of Electrophilic Addition Reactions 期刊论文 OAI收割
ACTA PHYSICO-CHIMICA SINICA, 2018, 卷号: 34, 期号: 5, 页码: 519-527
作者: Zhu Zunwei; Yang Qiaofeng; Xu Zhenzhen; Zhao Dongxia; Fan Hongjun

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收藏 | 浏览/下载：48/0 | 提交时间：2019/06/20

Fukui Function Local Softness Local Hard-soft And Acids-bases (Hsab) Principle Electrophilic Addition Reactions Finite Difference Approximation Abeem Sigma Pi Model

A New Set of Parameters of High-Mass X-ray Binaries Found with their Cyclotron Lines 期刊论文 OAI收割
arXiv e-prints, 2018
作者: Zhang, Chengmin; Taani, Ali; Chaty, Sylvain; Karino, Shigeyuki; Song, Liming

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收藏 | 浏览/下载：104/0 | 提交时间：2019/07/12

Astrophysics - High Energy Astrophysical Phenomena Abstract: We have derived new physical quantities for several High-Mass X-ray Binaries (HMXBs) with supergiant (SG) companions through their cyclotron lines. The parameters are: the terminal velocity of the wind, the mass loss rate of the donor, the effective temperature and the magnetic fields. These parameters influence significantly the improvement of the model of accretion. In spite of the variety of their observational properties, the corresponding magnetic field is around B ~ 10^12 G. This result can be constrained by the effects on stellar evolution. In addition, we have performed a segmentation in the parameter space of donors intended for several SG-HMXB listed in our sample set. The parameter space can be categorized into five regimes depending on the possibility of disk formation associated with accretion from the stellar wind. This can give a quantitative clarification of the observed variability and the properties of these objects. We show that, when these systems come into the direct accretion region, systems with corresponding parameters can emit X-rays.

相同和不同作用机制雌激素系统干扰物的联合毒性 学位论文 OAI收割
博士, 北京: 中国科学院研究生院, 2015
作者: 杨蓉

收藏 | 浏览/下载：75/0 | 提交时间：2016/08/10

雌激素，抗雌激素，浓度加和，作用方式，模型预测，Estrogens Antiestrogens Concentration addition Mode of action Model prediction

Gradient Structure-Induced Temperature Responsiveness in Styrene/Methyl Methacrylate Gradient Copolymers Micelles 期刊论文 OAI收割
macromolecular rapid communications, 2014, 卷号: 35, 期号: 3, 页码: 309-316
Zheng,Chao; Huang,Haiying; He,Tianbai

收藏 | 浏览/下载：42/0 | 提交时间：2015/10/15

In this work micelles are formed by gradient copolymer of styrene and methyl methacrylate in acetone-water mixture and their temperature responsiveness is investigated in a narrow range near room temperature. Three different kinds of structural transitions could be induced by temperature: unimers to micelle transition shrinkage/stretching of micelles and morphological transition from spherical micelles to vesicles. In addition a model analysis on the interface of gradient copolymer micelle is made to better understand these phenomena. It is found that both position and composition of the interface could alter in response to the change in temperature. According to the experiments and model analysis it is proposed that temperature responsiveness might be an intrinsic and universal property of gradient copolymer micelles which only originates from the gradient structure.

Unique properties of CuZrAl bulk metallic glasses induced by microalloying 期刊论文 OAI收割
JOURNAL OF APPLIED PHYSICS, 2011, 卷号: 110, 期号: 12
Huang, B; Bai, HY; Wang, WH

收藏 | 浏览/下载：83/0 | 提交时间：2013/09/23

INTERMETALLIC COMPOUNDS MECHANICAL-PROPERTIES YTTRIUM ADDITION MINOR ADDITIONS FORMING ABILITY KONDO MODEL BOSON PEAK CU ALLOYS HEAT

The analysis for the reason of limit cycle generated by friction in servo system (EI CONFERENCE) 会议论文 OAI收割
2010 International Conference on Computer, Mechatronics, Control and Electronic Engineering, CMCE 2010, August 24, 2010 - August 26, 2010, Changchun, China
作者: Li M.

收藏 | 浏览/下载：45/0 | 提交时间：2013/03/25

In this paper limit cycle which results from friction during low-velocity servo system has been discussed. First the piecewise linearization method has been applied to change nonlinear stribeck model to linear model. Second with analysis of equilibrium property it is proved the existence of limit cycle and its certain region. The analysis reveals that it is because of stability of equilibrium repeatedly changing results in the limit cycle during low-velocity state. In addition it also points that the key point to avoid this phenomenon is to keep robust stability of the close-loop system. 2010 IEEE.

SoC test data compression technique based on RLE-G (EI CONFERENCE) 会议论文 OAI收割
2010 International Conference on Advanced Measurement and Test, AMT 2010, May 15, 2010 - May 16, 2010, Sanya, China
作者: Liu W.; Yang L.; Yang L.; Zheng X.

收藏 | 浏览/下载：75/0 | 提交时间：2013/03/25

Test data compression has been an effective way to reduce test data volume and test time as well as to solve automatic test equipment (ATE) memory and bandwidth limitation. We analyze the limitations of current test data compression algorithm and draw on the previous experience to deduce an optimal compression coding model suitable for SoC test data. In addition in this paper we make full use of the relevance of the test vectors and the advantages of statistical coding to present an efficient test data compression method RLE-G based on the coding model and give the RLE-G the optimal compression efficiency of the boundary conditions and realization steps. The experimental results for ISCAS 89 benchmark circuits demonstrate RLE-G have the excellent advantages of high compression ratio. (2010) Trans Tech Publications.

Position servo control of a DC electromotor using a hybrid method based on model reference adaptive control (MRAC) (EI CONFERENCE) 会议论文 OAI收割
2010 International Conference on Computer, Mechatronics, Control and Electronic Engineering, CMCE 2010, August 24, 2010 - August 26, 2010, Changchun, China
作者: Chen J.

收藏 | 浏览/下载：43/0 | 提交时间：2013/03/25

This paper dealed with position control problems of a DC motor servo system that had nonlinear friction and was subject to parametric uncertainties external disturbances etc. In order to overcame those unfavourable factors mentioned above a model reference adaptive control method was proposed to regulate the important and main speed loop in the positioning system which was designed with three closed control loop where a compensatory measure was given so as to counterbalance the friction torque disturbances. In addition the other two close loops were built in adjusting the position and the current of the servo system respectively that aimed to achieve the fast and precise positioning and increase dynamic stiffness against load disturbances. Experimental results illustrate satisfactory performances in steady state error load capability high rapidity and so on. 2010 IEEE.