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Models and simulation of the switched Reluctance Motor Drive with the Microcomputer Control Based on MATLAB software Package

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Models and Simulation of the Switched Reluctance Motor Drive...

大白菜葡萄糖磷酸变位酶同工酶的纯化及其分子性质

Electronic Communication systems--The 2000 IEEE Asia-Pacific Conference on Circuits and systems

作者： H.Chen J.Jiang D.Zhang s.sun College of Information ＆ Electrical Engineering China University of Mining ＆ Technology

＜正＞The paper presents the component parts and their models of the switched Reluctance motor drive with variable angle PWM *** discretization of the rotor speed regulator of the drive with microcomputer control is given. The calculation of the parameters and the simulated models based on the AdATLAB sIMULINK software package are *** simulation of the prototype in the course of starting is made by the simulated models.

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华北农学报 1999年第1期14卷 134-140页

作者：崔洪昌刘敬梅 samuel s. sun 北京蔬菜研究中心蔬菜种质改良实验室

首先对影响葡萄糖磷酸变位酶（ＰＧＭ）稳定性的因素进行了比较研究，结果发现，在所有被检测的因子中，磷酸根对酶的保护作用最强，而Ｔｒｉｓ－盐酸则效果极差。在磷酸缓冲液中添加二硫苏糖醇、ＰＭＳＦ、葡萄糖和镁离子等可能的保持... 详细信息

首先对影响葡萄糖磷酸变位酶（ＰＧＭ）稳定性的因素进行了比较研究，结果发现，在所有被检测的因子中，磷酸根对酶的保护作用最强，而Ｔｒｉｓ－盐酸则效果极差。在磷酸缓冲液中添加二硫苏糖醇、ＰＭＳＦ、葡萄糖和镁离子等可能的保持试剂未能进一步提高酶的稳定性。另外，ｐＨ对ＰＧＭ酶的稳定性有较大影响，酸性ｐＨ不利于酶活性的保持，在ｐＨ８．０时酶最为稳定。因此，本实验对ＰＧＭ同工酶的纯化均在ｐＨ８．０的磷酸缓冲液中进行。依次经过抽提、分步硫酸铵沉淀、ＳｅｐｈａｄｅｘＧ７５柱层析以及二乙氨乙基纤维素柱高效液相色谱（ＤＥＡＥ－ＨＰＬＣ）等分离步骤，我们纯化了大白菜品种“白阳”黄化种苗中的３个葡萄糖磷酸变位酶（ＰＧＭ）同工酶，并分别测定了同耐热相关ＰＧＭ同工酶和与其自然电泳迁移率相近的另一同工酶的米氏常数（Ｋｍ），比较了它们对３７℃热处理的稳定性。结果表明，在米氏常数和热稳定性方面它们没有显著差别。

关键词：同工酶耐热性大白菜 PGM

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深度学习在高分辨力三维腰椎MRI中的应用

国际医学放射学杂志 2022年第6期45卷 741-742页

作者： s.sun E.T.Tan D.N.Mintz M.sahr Y.Endo J.Nguyen 刘春明

摘要目的比较深度学习重建（DLRecon）处理与标准（sOC）重建的 3D T2加权快速自旋回波（T2W FsE）腰椎 MRI图像以及 2D T2W FsE 影像，并比较观察者间的一致性和影

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Effect of β-carotene on selected indices of in vitro rumen fermentation in goats

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Effect of β-carotene on selected indices of in vitro rumen ...

与大白菜耐热性相关的葡萄糖磷酸变位酶的分离和纯化

The Ⅶ International symposium on the Nutrition of Herbivores(IsNH-7)

作者： H.-X.Yan L.-s.sun G.-Q.Zhao~1 College of Animal science and Technology,Yangzhou University Yangzhou 225009,P.R.China

Three goats fitted with rumen fistula were used as donors ofrumen *** were incubated in vitro with buffered tureen fluid for 24 *** levels of β-carotene(five groups:10,50,100,200, 500 mg/l)were added as five treatment groups to determine whether it affected rumen fermentation in vitro as compared with blank samples used as ***-N concentrations with 50,100 and 200 mg β-carotene/I group were found significantly lower than that in blank samples(Ps in all β-carotene-added groups were higher than in blanks,while those found in 200 and 500 mg/I groups were significantly higher(Pspectively).Total VFAs seemed not to be affected by added β-carotene(P>0.05),although propionate and butyrate concentrations *** is concluded that β-carotene can enhance the utilization of NH-N by rumen microorganisms and thus promote their growth in vitro.

关键词： β-carotene rumen fermentation goat in vitro

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华北农学报 1998年第4期13卷 86-92页

作者：崔洪昌李丽郑晓鹰 samuel s.sun 北京蔬菜研究中心蔬菜种质改良实验室

依次经过抽提、分步硫酸铵沉淀、二乙氨乙基纤维素（ＤＥＡＥＣｅｌｕｌｏｓｅ）柱层析，以及聚丙烯酰胺自然胶制备电泳（ＰｒｅｐａｒａｔｉｖｅＰＡＧＥ）等分离步骤，从耐热性较强的“白阳”大白菜品种的黄化种苗中，分离和纯化了... 详细信息

依次经过抽提、分步硫酸铵沉淀、二乙氨乙基纤维素（ＤＥＡＥＣｅｌｕｌｏｓｅ）柱层析，以及聚丙烯酰胺自然胶制备电泳（ＰｒｅｐａｒａｔｉｖｅＰＡＧＥ）等分离步骤，从耐热性较强的“白阳”大白菜品种的黄化种苗中，分离和纯化了与耐热性密切相关的一个葡萄糖磷酸变位酶（ＰＧＭ）同工酶。通过ＳＤＳＰＡＧＥ电泳，纯化的酶样品在２９ＫＤ处呈现一个显著条带。推测此酶为细胞质来源。我们还同时纯化了与耐热性无关的另一个细胞质ＰＧＭ同工酶。结果表明，它们只有自然电泳迁移率（电荷量）的不同，而没有明显分子大小的差别。

关键词：大白菜 PGM 同工酶蛋白质纯化微测序耐热基因

Co-doped Ni_(3)s_(2) nanosheet array: A high-efficiency electrocatalyst for alkaline seawater oxidation

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Nano Research 2024年第3期17卷 1050-1055页

作者： Meng Yue Xun He shengjun sun Yuntong sun Mohamed s.Hamdy Mhamed Benaissa Alsamani A.M.salih Jun Liu Xuping sun College of Chemistry Chemical Engineering and Materials ScienceShandong Normal UniversityJinan 250014China Institute of Fundamental and Frontier sciences University of Electronic Science and Technology of ChinaChengdu 610054China Department of Chemistry College of ScienceKing Khalid UniversityP.O.Box 9004Abha 61413Saudi Arabia Department of Chemical Engineering College of EngineeringUniversity of Ha’ilP.O.Box 2440Ha’il 81441Saudi Arabia Department of Otolaryngology-Head&Neck surgery West China HospitalSichuan UniversityChengdu 610041China

Developing efficient and durable oxygen evolution reaction(OER)catalysts holds great promise for green hydrogen production via seawater electrolysis,but remains a ***,we report a Co-doped Ni_(3)s_(2) nanosheet array on Ni foam(Co-Ni_(3)s_(2)/NF)as a high-efficiency OER electrocatalyst for *** alkaline conditions,Co-Ni_(3)s_(2)/NF requires an overpotential of only 368 mV to drive 100 mA·cm^(–2),superior to Ni_(3)s_(2)/NF(385 mV).Besides,it exhibits at least 50-h continuous electrolysis.

关键词： Co doping Ni_(3)s_(2)nanosheet array oxygen evolution reaction seawater electrolysis electrocatalyst

Divergent responses of runoff to climate change in the upper basins of the Third Pole dominated by westerlies and monsoon

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science China Earth sciences 2024年第8期67卷 2592-2614页

作者： Qikai sun Fengge sU He sun state Key Laboratory of Tibetan Plateau Earth system Environment and Resources(TPESER)Institute of Tibetan Plateau ResearchChinese Academy of SciencesBeijing 100101China University of Chinese Academy of sciences Beijing 100101China

The diverse climates,distribution of snow and glaciers,and geographic locations directly affect the runoff response to climate change in the upper basins of the Third *** present,a comprehensive analysis of runoff variations and their distinct responses to climate change in the westerlies-and monsoon-dominated upper basins is still *** study comprehensively analyzed annual runoff variations in westerlies-dominated basins(the upper basins of the Aksu(UAKs),syr Darya(UsRD),Yarkant(UYK),Hotan(UHT),Amu Darya(UAMD),and Indus(UI))and monsoon-dominated basins(the upper basins of the Yangtze(UYA),Yellow(UYE),Lancang(ULC),Nujiang(UNJ),and Yarlung Zangbo(UYZ))of the Third Pole from 1961 *** multi-source meteorological data and large-scale circulation factors,this study investigated the divergent responses of runoff in the upper basins to climate change,and explored the large-scale circulation mechanisms underlying runoff variations in these upper *** results showed that:(1)The annual runoff in the majority of upper basins(except for the UYE and UYZ)exhibited an increasing trend,and the annual runoff in the UAKs,UYK,and UI showed a significant increasing trend from1961 to *** annual runoff in the upper basins of the Third Pole changed abruptly from decreasing to increasing between the 1980s and 2000s,with the exception of the UYE.(2)The runoff in the monsoon-dominated upper basins has been controlled primarily by changes in precipitation over the past 55 *** contrast,the runoff in the westerlies-dominated upper basins exhibited three distinct long-term responses to climate change:temperature-dominated(UYK and UHT),precipitation-dominated(UsRD and UAMD),and the combined influence of precipitation and temperature(UAKs and UI).since the 1960s,the sensitivity of runoff to warm season temperature changes in the most westerlies-dominated upper basins has decreased,while the response of runoff to precipitation changes has intensified.(3)The stud

关键词： Upper basins of the Third Pole Climate change Westerlies and monsoon Runoff variations Large-scale circulation factors

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Hypoxic and temporal variation in the endocrine disrupting toxicity of perfluorobutanesulfonate in marine medaka(Oryzias melastigma)

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Journal of Environmental sciences 2024年第2期136卷 279-291页

作者： Baili sun Jing Li Yachen Bai Xiangzhen Zhou Paul K.s.Lam Lianguo Chen state Key Laboratory of Freshwater Ecology and Biotechnology Institute of HydrobiologyChinese Academy of SciencesWuhan 430072China University of Chinese Academy of sciences Beijing 100049China Office of the President Hong Kong Metropolitan University30 Good Shepherd StreetKowloonHong Kong SARChina

Perfluorobutanesulfonate(PFBs)is an emerging pollutant capable of potently disrupting the sex and thyroid endocrine systems of ***,the hypoxic and temporal variation in PFBs endocrine disrupting toxicity remain largely *** the present study,adult marine medaka were exposed to environmentally realistic concentrations of PFBs(0 and 10μg/L)under normoxia or hypoxia conditions for 7 days,aiming to explore the interactive behavior between PFBs and *** addition,PFBs singular exposure was extended till 21days under normoxia to elucidate the time-course progression in PFBs *** results showed that hypoxia inhibited the growth and caused the suspension of egg spawn regardless of PFBs *** regard to the sex endocrine system,7-day PFBs exposure led to an acute stimulation of transcriptional profiles in females,which,subsequently,recovered after the 21-day *** potency of hypoxia to disturb the sex hormones was much stronger than PFBs.A remarkable increase in estradiol concentration was noted in medaka blood after hypoxia *** in sex endocrinology of coexposed fish were largely determined by hypoxia,which drove the formation of an estrogenic *** further enhanced the endocrine disrupting effects of ***,the hepatic synthesis of vitellogenin and choriogenin,two commonly used sensitive biomarkers of estrogenic activity,failed to initiate in response to the estrogen *** to sex endocrine system,disturbances in thyroidal axis by PFBs or hypoxia were relatively ***,the present findings will advance our toxicological understanding about PFBs pollutant under the interference of hypoxia.

关键词： Perfluorobutanesulfonate(PFBs) Aquatic hypoxia Temporal toxicity Combined exposure Endocrine disruption Marine medaka

An amorphous FeMoO_(4) nanorod array enabled high-efficiency oxygen evolution electrocatalysis in alkaline seawater

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Nano Research 2024年第4期17卷 2270-2275页

作者： Jie Tang shengjun sun Xun He Hui Zhang Chaoxin Yang Min Zhang Meng Yue Hefeng Wang Yuntong sun Yonglan Luo sulaiman Alfaifi Asmaa Farouk Mohamed s.Hamdy Xuping sun Huiqing Wang Binwu Ying Department of Laboratory Medicine West China HospitalSichuan UniversityChengdu 610041China College of Chemistry Chemical Engineering and Materials ScienceShandong Normal UniversityJinan 250014China Institute of Fundamental and Frontier sciences University of Electronic Science and Technology of ChinaChengdu 610054China Chemistry Department Faculty of ScienceKing Abdulaziz UniversityJeddah 21589Saudi Arabia Department of Chemistry College of ScienceKing Khalid UniversityAbha 61413Saudi Arabia Medical simulation Centre West China Second University HospitalSichuan UniversityChengdu 610041China

The development of highly efficient and durable oxygen evolution reaction(OER)catalysts for seawater electrolysis is of great importance for ***,an amorphous FeMoO_(4) nanorod array on Ni foam is reported as a highly active OER electrocatalyst in alkaline seawater,requiring only overpotentials of 303 and 332 mV to achieve 100 and 300 mA·cm^(-2),***,it shows strong long-term electrochemical durability for at least 50 h.

关键词： amorphous material FeMoO_(4) nanorod array electrocatalyst seawater electrolysis oxygen evolution reaction