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Electron gun for SSRF

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Nuclear Science and Techniques 2003年第1期14卷 20-23页

作者： SHENG Shu-Gang lin guo-qiang 等 ShanghaiNationalSynchrotronRadiationCenter ShanghaiInstituteofNuclearResearchTheChineseAcademyofSciencesShanghai201800 ShanghaiNationalSynchrotronRadiationCenter ShanghaiInstitute

A 100 kV triode-electron-gun has been designed and manufactured for the linac of Shanghai Synchrotron Radiation Facility (SSRF). In this paper the performance of the gun and some key components are described.

关键词： SSRF 上海同步辐射装置电子枪 EGUN 电子束测量装置离子泵浦 EIMAC

Systematical identification of regulatory GPCRs by single-cell trajectory inference reveals the role of ADGRD1 and GPR39 in adipogenesis

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Science China Life Sciences 2025年

作者： Chuan Ye Xuemei Wang Jun lin Chenyang Wu Yuhua Gao Chenghao guo Yunxi Liao Ziyan Rao Shaodong Huang Weixuan Chen Ying Huang Jinpeng Sun Dongyu Zhao Changtao Jiang Center of Basic Medical Research Institute of Medical Innovation and ResearchPeking University Third Hospital Department of Physiology and Pathophysiology School of Basic Medical SciencesPeking University Department of Biomedical Informatics School of Basic Medical SciencesPeking University State Key Laboratory of Vascular Homeostasis and Remodeling Peking University Center for Obesity and Metabolic Disease Research School of Basic Medical SciencesPeking University State Key Laboratory of Female Fertility Promotion Center for Reproductive MedicineDepartment of Obstetrics and GynecologyPeking University Third Hospital National Clinical Research Center for Obstetrics and Gynecology Peking University Third Hospital Department of Endocrinology and Metabolism Peking University Third Hospital Key Laboratory Experimental Teratology of the Ministry of Education Department of Biochemistry and Molecular BiologySchool of Basic Medical SciencesCheeloo College of MedicineShandong University Department of Immunology School of Basic Medical SciencesPeking University

Adipogenesis is the healthy expansion of white adipose tissue (WAT),serving as a compensatory response to maintain metabolic homeostasis in the presence of excess energy in the ***,the identification of novel regulatory molecules in adipogenesis,specifically membrane receptors such as G protein-coupled receptors (GPCRs),holds significant clinical *** receptors can serve as viable targets for pharmaceuticals,offering potential for restoring metabolic homeostasis in individuals with *** utilized trajectory inference methods to analyze three distinct single-nucleus sequencing (sNuc-seq) datasets of adipose tissue and systematically identified GPCRs with the potential to regulate *** verification in primary adipose progenitor cells (APCs) of mice,we discovered that ADGRD1 promoted the differentiation of APCs,while GPR39 inhibits this *** the obese mouse model induced by a high-fat diet(HFD),both gain-of-function and loss-of-function studies validated that ADGRD1 promoted adipogenesis,thereby improving metabolic homeostasis,while GPR39 inhibited adipogenesis,leading to metabolic ***,through the analysis of 2,400 ChIP-seq data and 1,204 bulk RNA-seq data,we found that the transcription factors (TFs) MEF2D and TCF12 regulated the expression of ADGRD1and GPR39,*** study revealed the regulatory role of GPCRs in adipogenesis,providing novel targets for clinical intervention of metabolic dysfunction in obese patients.

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Non-Gaussian Pulse Propagation and Pulse Quality Factor Using Intensity Moment Method

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Chinese Physics Letters 1999年第6期16卷 415-417页

作者： lin guo-cheng SUI Cheng-hua lin qiang Research Institute of Technical Physics Zhejiang University of TechnologyHangzhou 310014 Department of Physics Zhejiang UniversityHangzhou 310028

The propagation of ultra-short light pulses with nonlinear chirp and arbitrary amplitude profile is treated by using first-order and second-order intensity moments in temporal domain.A generalized pulse complex pareinieter P^(-1) is introduced and its propagation law through dispersive systems is *** pulse quality factor M:is *** an example,the propagation of pulses with sech-type amplitude proHle through dispersive media is *** method is proved to be a simple way to treat the propagation of non-Gaussian pulses through dispersive system compared with the temporal integral.

关键词： domain. dispersive propagation

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中国明对虾能量代谢与生长的关系

水产学报 2006年第1期30卷 56-62页

作者：黄国强董双林王芳穆迎春董少帅刘相义中国海洋大学海水养殖教育部重点实验室中国海洋大学海水养殖教育部重点实验室山东青岛266003

采用能量收支推算方法,计算了中国明对虾的呼吸能量消耗,并计算了中国明对虾摄食配合饵料后其生长的呼吸能消耗。不同规格的中国明对虾的呼吸能与增重的关系都可以用线性方程Re=r×G+k很好地描述,所有规格对虾的呼吸能(Re)与增重(G)和体... 详细信息

采用能量收支推算方法,计算了中国明对虾的呼吸能量消耗,并计算了中国明对虾摄食配合饵料后其生长的呼吸能消耗。不同规格的中国明对虾的呼吸能与增重的关系都可以用线性方程Re=r×G+k很好地描述,所有规格对虾的呼吸能(Re)与增重(G)和体重(W)的复合关系可用方程Re=r×G+b×Wc很好地拟合。不同大小中国明对虾摄食配合饲料时每增长1g湿重、1g干重、1g蛋白质、1kJ能量的呼吸能消耗相应范围分别为12.660～17.785kJ、21.600～31.292kJ、31.572～45.537kJ、1.089～1.453kJ。但中国明对虾摄食不同饵料后,单位体重增长的能耗在不同饵料投喂的对虾间存在显著差异,并且发现这些数值都明显比鱼类高。本文对表观特殊动力作用与生长的关系进行了探讨,并认为生长不是导致表观特殊动力作用出现的根本原因。

关键词：中国明对虾生长表观特殊动力作用能量收支

High Electrical and Thermal Conductivity of Nano-Ag Paste for Power Electronic Applications

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Acta Metallurgica Sinica(English Letters) 2020年第11期33卷 1543-1555页

作者： Hong-qiang Zhang Hai-lin Bai qiang Jia Wei guo Lei Liu Gui-Sheng Zou School of Mechanical Engineering and Automation.Beihang University Beijing 100191China Department of Mechanical Engineering Tsinghua UniversityBeijing 100084China

The nano-Ag paste consisted of Ag nanoparticles and organic *** organics would be removed by evaporation or decomposition during *** the sintering temperature was 300℃,the resistivity of sintered bulk was 8.35×10^-6Ωcm,and its thermal conductivity was 247 W m^-1 K^-*** Si/SiC chips and direct bonding copper(DBC)substrates could be bonded by this nano-Ag paste at low *** bonding interface,sintered microstructure and shear strength of Si/SiC chip attachment were investigated by scanning electron microscopy,transmission electron microscopy and shear *** showed that the sintered Ag layer was porous structure and tightly adhered to the electroless nickel immersion gold surface of DBC substrate and formed the continuous Ag–Au interdiffusion *** shear strength of Si and SiC chip attachments was higher than 35 MPa when the sintering pressure was 10 *** fracture occurred inside the sintered Ag layer,and the fracture surface had obvious plastic deformation.

关键词： Nano-Ag paste Sintering process Interfacial microstructure Chip attachment Shear strength

Preparation of calcium ferrite by flue gas desulfurization gypsum

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Journal of Iron and Steel Research International 2021年第11期28卷 1357-1365页

作者： lin-cheng Liu Hai-bin Zuo Wen-guo Liu Zhi-qiang Xu State Key Laboratory of Advanced Metallurgy University of Science and Technology BeijingBeijing 100083China

At present,the continuous accumulation of the flue gas desulfurization(FGD)gypsum in steel plants leads to the serious environmental issues and resource *** achieve green and sustainable development for the steel industry,it is significant to improve the usage of by-product *** the sintering FGD gypsum,ferric oxide,and graphite carbon as raw materials,the effects of the carbon content,reaction time,and molar ratio of CaO to Fe_(2)O_(3)on the desulfurization rate of gypsum were studied based on the orthogonal *** results show that the order of the three influencing factors on the desulfurization rate of FGD gypsum is:molar ratio of CaO to Fe_(2)O_(3)>reaction time>carbon *** the optimal conditions of 20 wt.%carbon content,4 h reaction time,and 1:1 molar ratio of CaO to Fe_(2)O_(3),the desulfurization rate of desulfurization gypsum is 95.79%,and 97.57 wt.%of calcium ferrite appears in the solid product,which can be used as sintering additive to increase the economic benefits of enterprises and realize the green ecological development mode of internal generation and internal digestion of solid waste in iron and steel enterprises.

关键词： Flue gas desulfurization gypsum Desulfurization rate Calcium ferrite Sintered ore Green production

形成性评价在口腔医学理论教学中的实践与反思

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黑龙江高教研究 2025年第1期43卷 60-65页

作者：郭若兰林思宇林江首都医科大学附属北京同仁医院北京100730

目的:利用形成性评价对学生的教学评价进行改进,对口腔医学理论的教学方法进行修正,以期望提升临床教学的效果。方法:实验对象为某医科大学临床医学专业学生(包括五年制和5+3一体化两种学制),通过是否参与形成性评价教学分为对照组和实... 详细信息

目的:利用形成性评价对学生的教学评价进行改进,对口腔医学理论的教学方法进行修正,以期望提升临床教学的效果。方法:实验对象为某医科大学临床医学专业学生(包括五年制和5+3一体化两种学制),通过是否参与形成性评价教学分为对照组和实验组。对照组采用传统教学模式,主要利用教师课堂授课;实验组利用形成性评价改进教学模式,不断对学生的学习情况进行反馈和改进,最终通过期末考试定量评价对比学生的学习效果。结果:在两种学制中,实验组学生均比同学制对照组学生期末成绩有所提高,且差异具有统计学意义(P<0.05)。结论:通过形成性评价改进教学模式,能促进学生自主学习,提高学生综合学习的能力,提升学习效果。

关键词：形成性评价口腔医学教学方法

Thellungiella halophila ThPIP1 gene enhances the tolerance of the transgenic rice to salt stress

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Journal of Integrative Agriculture 2015年第10期14卷 1911-1922页

作者： qiang Xiao-jing YU guo-hong JIANG lin-lin SUN lin-lin ZHANG Shu-hui LI Wei CHENG Xian-guo Key Lab of Plant Nutrition and Fertilizers Ministry of Agriculture/Institute of Agricultural Resources and Regional PlanningChinese Academy of Agricultural Sciences College of Land and Environment Shenyang Agricultural University

Aquaporin proteins were demonstrated to play an important regulatory role in transporting water and other small molecules. To better understand physiological functions of aquaporins in extremophile plants, a novel ThPIP1 gene from the Thellungiella halophila was isolated and functionally characterized in the transgenic rice. Data showed that the ThPIP1 protein encoded 284 amino acids, and was identified to be located on the plasma membrane. The expression of ThPIP1 gene in the shoots and roots of T. halophila seedlings were induced by high salinity. The transgenic rice overexpressing ThPIP1 gene significantly increased plants tolerance to salt stress through the pathway regulating the osmotic potentials, accumulation of organic small molecules substances and the ratio of K＋/Na＋ in the plant cells. Moreover, split-ubiquitin yeast two-hybrid assay showed that Th PIP1 protein specifically interacted with ThPIP2 and a non-specific lipid-transfer protein 2, suggesting that ThPIP1 probably play a key role in responding to the reactions of multiple external stimulus and in participating in different physiological processes of plants exposed to salt stress.

关键词： ThPIP1 transgenic rice salt stress protein interaction Thellungiella halophila

Simulation of multi-axis grinding considering runout based on envelope theory

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Chinese Journal of Aeronautics 2020年第12期33卷 3526-3534页

作者： Yan JIANG qiang guo School of Mechanical&Power Engineering Henan Polytechnic UniversityJiaozuo 454150China

As one of the most important methods for machining process with high accuracy,ultra-precision grinding is widely used in fields such as aerospace,automotive and mold,***,it is common that wheel and spindle axis do not coincide with each other due to wheel settings,machining errors and so *** could result in the generation of wheel runout,which may reduce the machining surface's *** this paper,combining this phenomenon,an analytic algorithm method for the multi-axis grinding process is introduced according to the envelope *** that,the accuracy of this method is *** experiments are carried out on a 5-axis machining *** artificial runout is set up and calculated utilizing the least square ***,using the presented method,two examples with and without runout are introduced to illustrate the validation of the proposed *** error due to the runout effect is also analyzed.

关键词： Analytic algorithm Complex surface Envelope theory Multi-axis grinding Wheel runout