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Industrialization of High Performance Sintered NdFeB Magnets

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Journal of Rare Earths 2004年第Z1期22卷 118-121页

作者： chen Beixin Wang Biao Material Science and Engineering Xi''an Jiaotong University Xi''an 710049 China Yantai Shougang Magnetic Materials Inc. Yantai 265500 China Yantai Shougang Magnetic Materials Inc.Yantai 265500 China

Sintered Nd-Fe-B magnet was manufactured by advanced equipment via a SC (Strip casting) *** has integrative performance.

关键词： sintered Nd-Fe-B magnet manufacture process microstructure magnetic properties

The effects of high temperature level on square Bt protein concen-tration of Bt cotton

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Journal of Integrative Agriculture 2015年第10期14卷 1971-1979页

作者： WANG Jun chen Yuan YAO Meng-hao LI Yuan WEN Yu-jin chen Yuan ZHANG Xiang chen De-hua Jiangsu Provincial Key Laboratory of Crops Genetics and Physiology Yangzhou University Yangzhou 225009 P.R. China Department of Soil and Crop Sciences Texas A&M University College Station TX77843 USA Syngenta Biotechnology Inc. Carry NC 27519 USA

Higher boll worm survival rates were detected after high temperature presented during square period in Bt cotton. The objective of this study was to investigate the effects of high temperature level on the Bt efficacy of two different types of Bt cotton cultivars at squaring stage. During the 2011 to 2013 cotton growth seasons, high temperature treatments ranged from 34 to 44°C in climate chambers, and field experiments under high temperature weather with various temperature levels were conducted to investigate the effects of the high temperature level on square Bt protein concentration and nitrogen metabolism. The climate chamber experiments showed that the square insecticidal protein contents reduced after 24 h elevated temperature treatments for both cultivars, whereas significant declines of the square insecticidal protein contents were detected at temperature 〉38°C, and only slightly numerical reductions were observed when temperature below 38°C. Similar high temperature responses were also observed at the two field experimental sites in 2013. Correspondingly, high temperature below 38°C seems have little effect on the square amino acid concentrations, soluble protein contents, glutamic-pyruvic transaminase（GPT） and glutamic-oxalacetic transaminase（GOT） activities as well as protease and peptidase activities; however, when the temperature was above 38°C, reduced soluble protein contents, enhanced amino acid concentrations, decreased GPT and GOT activities, bolstered protease and peptidase activities in square were detected. In general, the higher the temperature is（〉38°C）, the larger the changes for the above compound contents and key enzymes activities of the square protein cycle. The findings indicated that the unstable insect resistance of the square was related to high temperature level during square stage.

关键词： Bt cotton square high temperature level stress Bt protein nitrogen metabolism

The Assembly of C60 in Semicrystalline PLLA Matrix

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Nano-Micro Letters 2012年第1期4卷 30-33页

作者： Li chen Xiujiang Pang Key Lab of Rubber-plastics of Ministry of Education/Shandong Provincial Key Laboratory of Rubber-plastics Qingdao University of Science & Technology (QUST) College of Chemistry and Molecular Engineering QUST

It has increasingly become a research focus to build higher structure composed of C60. However, there has been very few reports on the influence of polymer addition on the self-assembling behavior of fullerene in organic solvents. In this research, big needle-like C60 assemblings have been obtained in the form of PLLA/C60 composites. The largest C60 needles can be observed by naked eyes. The amount of C60 in the composite influences the length of C60 needles to some extent. DSC results indicate C60 accelerates the crystallization and lift the relative crystallinity of PLLA matrix. the results also imply the addition of semicrystalline PLLA influence the assembling behavior of C60. i.e., the crystallization of PLLA accelerated by C60 also act a driving force for the enriching and the linear assembling of C60 in PLLA matrix via Van der Waals force.

关键词： C60 Poly(L-lactide acid)(PLLA) Assembling

A new approach to the time evolution of characteristic function of the density operator obtained by virtue of thermal entangled state representation

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Science China(Physics,Mechanics & Astronomy) 2012年第11期55卷 2076-2080页

作者： chen Feng FAN HongYi Department of Material Science and Engineering University of Science and Technology of ChinaHefei 230026China Department of Mathematics and Physics Hefei UniversityHefei 230022China

Like the progress made by Dirac that wave function ψ(x) was reformed as x |ψ,where x| is the coordinate representation,we endow the characteristic function χλ = Tr(e λa-λaρ) of density operator ρ with the meaning of wave function of |ρ in the thermal entangled state η| representation in the doubled Fock space,χλ = η = λ|ρ,where |ρ = ρ|η = *** find the time evolution of χλ can then be directly and neatly obtained via this *** way of deriving the density operator from η = λ | ρ is also presented.

关键词： characteristic function density operator master equations thermal entangled state representation

Analysis of single-event transient sensitivity in fully depleted silicon-on-insulator MOSFETs

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Nuclear Science and Techniques 2018年第4期29卷 108-113页

作者： Jing-Yan Xu Shu-Ming chen Rui-Qiang Song Zhen-Yu Wu Jian-Jun chen College of Computer National University of Defense Technology National Laboratory for Parallel and Distributed Processing National University of Defense Technology

Based on 3 D-TCAD simulations, single-event transient(SET) effects and charge collection mechanisms in fully depleted silicon-on-insulator(FDSOI) transistors are investigated. This work presents a comparison between28-nm technology and 0.2-lm technology to analyze the impact of strike location on SET sensitivity in FDSOI devices. Simulation results show that the most SET-sensitive region in FDSOI transistors is the drain region near the gate. An in-depth analysis shows that the bipolar amplification effect in FDSOI devices is dependent on the strike locations. In addition, when the drain contact is moved toward the drain direction, the most sensitive region drifts toward the drain and collects more charge. This provides theoretical guidance for SET hardening.

关键词： Single-event transient Charge collection Bipolar amplification Fully depleted silicon-on-insulator

Synergistic action of famotidine and chlorpheniramine on acetic acid-induced chronic gastric ulcer in rats

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World Journal of Gastroenterology 2005年第45期11卷 7203-7207页

作者： Zhen Qin Chao chen Laboratory of natural drugs of Medical College China Three Gorges University Yichang 443002 Hubei Province China

AIM： To assess the synergistic action of famotidine （FMD） and chlorpheniramine （CPA） on acetic acid-induced chronic gastric ulcer in rats. METHODS： Chronic gastric lesions were induced in male Sprague-Dawley （SD） rats by serosal application of the acetic acid. Forty SD rats were randomly divided into blank group （n = 8）, control group （n = 8）, FMD group （n = 8）, CPA group （n = 8）, and FMD＋CPA group （n = 8）. Each group was given intraperitoneally （i.p.） 0.5 mL/100 g distilled water, 9 g/L NaCl saline, 4 mg/kg FMD, 10 mg/kg CPA, 4 mg/kg FMD＋10 mg/kg CPA, respectively, daily for 10 d, On d 10, ulcer area was determined by planimetry, The level of myeloperoxidase （MPO） in the liver homogenation was determined by biochemical methods and the plasma levels of 6-ketoprostaglandin F1 alpha （6-keto-PGFla）and IL-8 were determined by radioimmunoassay. RESULTS： The synergistic effects of FMD＋CPA group on the lesion, IL-8, 6-keto-PGFla and MPO were confirmed. The effect of FMD＋CPA group was significantly different as compared to the control and FMD groups. The lesion （mm2） was reduced from 40.18±2.6 in control group to 6.83±2.97 in PMD＋CPA group, P〈0.01, and from 32.9 ±3.27 in FMD group to 6.83±2.97 in PMD＋CPA group, P〈0.01. The plasma levels of IL-8 decreased from 0.69± 0.11 ng/L in control group to 0.4±0.04 ng/L in PMD＋CPA group, P〈0.01, and from 0.51±0.08 ng/L in FMD group to 0.4±0.04 ng/L in PMD＋CPA group, P〈0.05. The level of 6-keto-PGF1, increased from 7.55±1.65 ng/L in control group to 16.62±0.97 ng/L in PMD＋CPA group,P〈0.01, and from 13.15±1.48 ng/L in FMD group to 16.62±0.97 ng/L in PMD＋CPA group,P〈0.05. The levels of MPO in the liver homogenate decreased from 9.12±2.05 u/Lin control group to 4.33±0.95 u/L in PMD＋CPA group, P〈0.01, and from 8.3±1.29 u/L in FMD group to 4.33±0.95 u/L, P〈0.01. CONCLUSION： The synergistic action of FMD and CPA on acetic acid-induced chronic gastric ulcer in rats decreases the incidence of ulcer and also enhances the healing of ulcer.

关键词： Gastric ulcer Acetic acid Famotidine Chlorpheniramine Interleukin-8 6-Ketoprostaglandin F1 alpha Myeloperoxidase

Effect of Mg-Film Thickness on the Formation of Semiconductor Mg_2Si Films Prepared by Resistive Thermal Evaporation Method

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Journal of Wuhan University of Technology(Materials Science) 2014年第3期29卷 612-616页

作者：余宏谢泉 chen Qian Institute of Advanced Optoelectronic Materials and Technology College of Science Guizhou University School of Physical Education Sciences Guizhou Normal College

Mg films of various thicknesses were deposited on Si（111） substrates at room temperature by resistive thermal evaporation method, and then the Mg/Si samples were annealed at 40 ℃ for 4 h. The effects of Mg film thickness on the formation and structure of Mg2Si films were investigated. The results showed that the crystallization quality of Mg2Si films was strongly influenced by the thickness of Mg film. The XRD peak intensity of Mg2Si （220） gradually increased initially and then decreased with increasing Mg film thickness. The XRD peak intensity of Mg2Si （220） reached its maximum when the Mg film of 380 um was used. The thickness of the Mg2Si film annealed at 400℃ for 4 h was approximately 3 times of the Mg film.

关键词： Mg film thickness Mg2Si films Mg2Si films thickness thermal evaporation annealing

ZAR1 resistosome and helper NLRs:Bringing in calcium and inducing cell death

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Molecular Plant 2021年第8期14卷 1234-1236页

作者： Jian chen Min Li Longyu Liu Gongyou chen Zheng Qing Fu International Genome Center Jiangsu UniversityZhenjiang 212013China China-USA Citrus Huanglongbing Joint Laboratory(A Joint Laboratory of The University of Florida's Institute of Food and Agricultural Sciences and Gannan Normal University) National Navel Orange Engineering Research CenterGannan Normal UniversityGanzhouJiangxi 341000China School of Agriculture and Biology/State Key Laboratory of Microbial Metabolism Shanghai Jiao Tong UniversityShanghai 200240China Department of Biological Sciences University of South CarolinaColumbiaSC 29208USA

To protect themselves from infectious diseases,plants have deployed a two-tiered surveillance system to recognize invading pathogens(Fu and Dong,2013).In the first layer of the immune system,plants evolved extracellular patter n recognition receptors to detect con served pathoge n-associated molecular patterns(PAM Ps)and activate PAMP-triggered immunity(PTI)(Boiler and Felix,2009).

关键词： extracellular system

Special issue dedicated to the 100th anniversary of Nankai University

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Science China Chemistry 2019年第5期62卷 521-524页

作者： Jun chen Guangxin Liang College of Chemistry Nankai University

Nankai University was founded in 1919 by the famous patriotic educators Yan Xiu and Zhang Boling who practiced the ideology of 'Saving the Nation through Education,' and it is a comprehensive university that is directly governed by the Ministry of Education;it is undergoing national strategic construction for being among world’s top universities. With the motto of 'Dedication to Public Interests, Acquisition of All-Round Capability, and Aspiration for Daily Progress';holding the aim of 'Knowing China and Serving China'.

关键词： Zhang Special issue dedicated to the 100th anniversary of Nankai University