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Methylprednisolone and tetrandrine in combination with direct current electrical field for treating acute spinal cord injury

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Neural Regeneration Research 2007年第1期2卷 27-32页

作者： Ningjiang Shen yutian wang Ji Cai Department of Orthopedics People＇s Hospital of Hainan Province Haikou 570311 Hainan Province China

BACKGROUND： The direct current electrical field can effectively promote the regeneration of the spinal cord; moreover, methylprednisolone （MP） can relieve secondary edema after spinal cord injury. Tetrandrine （Tet） is an effective component of hanfangji and can protect the effect of spinal cord and axis-cylinder. Whether direct current electrical field combining with MP or Tet has synergic or strengthening effect on treating complete spinal cord injury or not should be studied further. OBJECTIVE：To study the effect of direct current electrical field assisted by MP and Tet on treating spinal cord injury. DESIGN： Randomized controlled animal study. SETTING： People＇s Hospital of Hainan Province. MATERIALS： A total of 45 healthy hybrid dogs, of both genders, weighing 10 - 12 kg, aged 1.5 - 2 years, were provided by Animal Center of Hainan Province. Somatosensory evoked potential meter （DANTEC Company）, IBAS-2.0 imaging analysis meter （Germany）, and self-made electronic stimulator. METHODS： The experiment was carried out in Hainan People＇s Hospital from May 2001 to June 2004. All experimental dogs were randomly divided into 4 groups： control group （n =9）, electrostimulating group （n =12）, MP ＋ electrostimulating group （n =12） and Tet ＋ electrostimulating group （n =12）. ① After anesthesia, Allen WD method was used to induce complete spinal cord injury. The metal bar, which was 10 cm in height fell freely and vertically hit the spinal cord to provide a complete spinal cord injury. Dogs in control group and electrostimulating group were implanted electrical stimulators 6 hours after spinal cord injury （no electricity in control group）; dogs in MP ＋ electrostimulating group were injected 30 mg/kg MP for 15 minutes at 2 hours after spinal cord injury and electrical stimulators implanted at 6 hours after injury; dogs in Tet ＋ electrostimulating group were intravenously injected with 7.5 mg/kg Tet at 2 hours after spinal cord injury and electrical stimulators implanted at 6 hou

关键词： spinal cord injury methylprednisolone electric stimulation

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Evaluation of degree of nerve root injury by dermatomal somatosensory evoked potential following lumbar spinal stenosis

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Neural Regeneration Research 2008年第11期3卷 1249-1252页

作者： Ningjiang Shen Guangji wang Jian Chen Xiaoli Wu yutian wang Department of Orthopaedic Surgery Hainan People＇s Hospital Haikou 570311 Hainan Province China

BACKGROUND： Computed Tomography （CT） and Magnetic Resonance Imaging （MRI） can display the site of lumbar spinal stenosis and predict nervous compression at the morphological level; however, pure morphological changes cannot reflect functional alterations in a compressed nerve root. Dermatomal somatosensory evoked potential （DSEP） provides a means to assess the functional state of a nerve root. OBJECTIVE： To evaluate the clinical significance of DSEP, assessing the degree of nerve root injury following lumbar spinal stenosis. DESIGN, TIME AND SETTING： A case-control study was performed in the Department of Orthopaedic Surgery, Hainan People＇s Hospital, China, between September 2004 and December 2007. PARTICIPANTS： Forty-seven patients diagnosed with lumbar spinal stenosis by CT or MRI were selected as the case group; fifty healthy subjects were collected as the control group. METHODS： A KEYPOINT myoelectric evoked potential apparatus （DANTEC Company, Denmark） was used to measure DSEP, and stimulative spots were determined in accordance with the skin key sensory spot standards established by The American Spinal Injury Association： L4 in the medial malleolus, L5 in the third metatarsophalangeal joint of the dorsum of foot and S1 in the lateral heel. The needle electrode used as the recording electrode was located at the Cz point of the cranium, and the reference electrode at the Fz point. MAIN OUTCOME MEASURES： Latency of the P40 peak of DSEP, P1-N1 amplitude, P40 waveform and differentiation and disappearance of various waves. RESULTS： The sensitivity and diagnostic concurrence with surgery of nerve root injury following lumbar spinal stenosis evaluated by DSEP was 95.7 %. P40 latencies at L4, L5 and S1 in the case group were significantly longer than in the control group （P 〈 0.05）, and the P1-N1 amplitude in the case group was significantly lower than the control group （P 〈 0.05-0.01）. Nerve root injury was categorized according to DSEP latency as follows： severe da

关键词： dermatomal somatosensory evoked potential lumbar spinal stenosis nerve root injury

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Progress of d^0 magnetism in SiC

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Journal of Semiconductors 2017年第3期38卷 100-109页

作者： yutian wang Chenguang Liu Yuming Zhang School of Microelectronics Xidian University and Key Laboratory of Wide Band-Gap Semiconductor Materials and DevicesXi'an 710071 China

The properties of defect-induced ferromagnetism（d^0magnetism） in SiC belong to carbon-based material which has been systematically investigated after *** this paper,we reviewed our research progress about d^0 magnetism in two aspects,i.e.,magnetic source and magnetic coupling *** V_（Si）V_C divacancies have been evidenced as the probable source of d^0 magnetism in *** trace the ferromagnetic source in microscopic and electronic view,the p electrons of the nearest-neighbor carbon atoms,which are around the V_（Si）V_C divacancies,are *** magnetic coupling mechanism,a higher divacancy concentration leads to stronger paramagnetic interaction but not stronger ferromagnetic *** the d^0 magnetism can probably be explained as a local effect which is incapable of scaling up with the volume.

关键词： SiC d0 magnetism graphite

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Improving Knowledge Graph Completion Using Soft Rules and Adversarial Learning

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Chinese Journal of Electronics 2021年第4期30卷 623-633页

作者： TANG Caifang RAO Yuan YU Hualei SUN Ling CHENG Jiamin wang yutian Xi'an Key Laboratory of Social Intelligence and Complexity Data Processing School of Software EngineeringXi'an Jiaotong University Shaanxi Joint Key Laboratory for Artifact Intelligence School of Software EngineeringXi'an Jiaotong University School of Software Engineering Xi'an Jiaotong University

Knowledge graph is a useful resources and tools for describing entities and relationships in natural language processing tasks. However, the existing knowledge graph are incomplete. Therefore, knowledge graph completion technology has become a research hotspot in the field of artificial intelligence, but the traditional knowledge graph embedding method does not fully take into account the role of logic rules and the effect of false negative samples on knowledge *** on the logic rules of knowledge and the role of adversarial learning in knowledge embedding, we proposes a model to improve the completion of knowledge graph:soft Rules and graph adversarial learning(RUGA). Firstly,the traditional knowledge graph embedding model is trained as generator and discriminator by using adversarial learning method, and high-quality negative samples are obtained. Then these negative samples and the existing positive samples together constitute the label triple in the injection rule model. The whole model will benefit from both high-quality samples and logical rules. In addition,we evaluated the performance of link prediction task and triple classification task on Freebase and Yago datasets respectively. Finally, the experimental results show that the model can effectively improve the effect of knowledge graph completion.

关键词： Knowledge graph Knowledge embedding Knowledge graph completion Adversarial learning

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Variations in the Microstructure and Properties of Mn-Ti Multiple-phase Steel with High Strength under Different Tempering Temperatures

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Chinese Journal of Mechanical Engineering 2015年第2期28卷 430-436页

作者： LI Dazhao LI Xiaonan CUI Tianxie LI Jianmin wang yutian FU Peimao School of Materials Scinece and Engineering North University of China Technology Center Taiyuan Iron & Steel (Group) Co. School of Materials Scinece and Engineering Tianjin University

There are few relevant researches on coils by tempering,and the variations of microstructure and properties of steel coil during the tempering process also remain *** using thermo-mechanical control process（TMCP）technology,Mn-Ti typical HSLA steel coils with yield strength of 920 MPa are produced on the 2250 hot rolling production ***,the samples are taken from the coils and tempered at the temperatures of 220℃,350℃,and 620℃*** tempering the strength,ductility and toughness of samples are tested,and meanwhile microstructures are *** initially emerge inside the ferrite laths and the density of the dislocation ***,the lath-shaped ferrites begin to gather,and the retained austenite films start to ***,the retained austenite films are completely decomposed into coarse and short rod-shape precipitates composed of C and Ti *** yield strength increases with increasing tempering temperature due to the pinning effect of the precipitates,and the dislocation density *** yield strength is highest when the steel is tempered at 220℃because of pinning of the precipitates to *** total elongation increases in all samples because of the development of ferrites during *** tensile strength and impact absorbed energy decline because the effect of impeding crack propagation weakens as the retained austenite films completely decompose and the precipitates *** paper clarifies the influence of different tempering temperatures on phase transformation characteristics and process of Mn-Ti typical multiphase steels,as well as its resulting performance variation rules.

关键词： multiple-phase microstructure lath-shaped ferrite polygonal ferrite precipitate retained austenite film

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Rare earth doping effect on the optical properties of several fluorescence materials

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Science China(Physics,Mechanics & Astronomy) 2012年第7期55卷 1235-1239页

作者： wang ShuTao wang DongSheng wang yutian PAN WeiWei College of Electrical Engineering Yanshan UniversityQinhuangdao 066004China Hebei Engineering University Mechanical and Electrical Institute Handan 056038China

Based on the optical properties of rare earth fluorescence materials, a set of fluorescence optical fiber systems was designed. The system selects the emitting LED, which is economical and practical as a light source. The experiment of the emission and excitation optical spectrum, decay curve of fluorescence and residuals for several sensitive materials confirms the match of Y2O2S:Eu using the light source and the feasibility of the system. The rare earth material Y2O2S:Eu is selected as the material candidate for being the most sensitive.

关键词： physics fluorescence materials optical fiber optical spectrum

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乡村振兴战略背景下现代生鲜农产品配送模式分析

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全国流通经济 2024年第7期 44-47页

作者：阚豪王雨甜史桂芳程娟金陵科技学院江苏南京211169

乡村振兴战略和电子商务背景下,物流对于农村发展是非常重要的组成部分,然而我国物流业起步较晚,在物流配送设备、技术和模式上都存在许多问题。因此如何降低物流成本,提高物流水平成为当下探究的重点问题。本文立足物流配送理论知识,... 详细信息

乡村振兴战略和电子商务背景下,物流对于农村发展是非常重要的组成部分,然而我国物流业起步较晚,在物流配送设备、技术和模式上都存在许多问题。因此如何降低物流成本,提高物流水平成为当下探究的重点问题。本文立足物流配送理论知识,结合我国农村物流配送现状对农村生鲜农产品配送模式进行分析,尝试从增强物流配送技术及基础设施、物流人才培养和改善物流流程三个方面对现代生鲜农产品配送模式进行优化,最后以SWOT模型针对陕西省安康市镇坪县生鲜农产品物流配送进行实例分析,并提出一系列可行的对策建议。

关键词：生鲜农产品配送模式乡村振兴战略

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Investigation of MHD power generation with supersonic non-equilibrium RF discharge

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Chinese Journal of Aeronautics 2016年第4期29卷 855-862页

作者： Yang Pengyu Zhang Bailing Li Yiwen wang yutian Duan Chengduo Fan Hao Gao Ling Science and Technology on Plasma Dynamics Laboratory Air Force Engineering University China Aerodynamics Research and Development Center Science and Technology on Combustion Internal Flow and Thermo-Structure Laboratory Astronautics School Northwestern Polytechnical University

Magnetohydrodynamic (MHD) power generation with supersonic non-equilibrium plasma is demonstrated. Capacitively coupled radio frequency (RF) discharge (6 MHz, maximum continual power output of 200 W) was adopted to ionize the Mach number 3.5 (650 m/s), 0.023 kg/m(3) airflow. In a MHD channel of 16 mm x 10 mm x 20 mm, MHD open voltage of 10 V is realized in the magnetic field of 1.25 T, and power of 0.12 mW is extracted steadily and continuously in the magnetic field of 1 T. The reasons for limited power generation are proposed as: low conductivity of RF discharge; large touch resistance between MHD electrode and plasma; strong current eddies due to flow boundary layer. In addition, the cathode voltage fall is too low to have obvious effects on MHD power generation. (C) 2016 Chinese Society of Aeronautics and Astronautics. Production and hosting by Elsevier Ltd.

关键词： Magnetohydrodynamic Non-equilibrium plasma Power generation Radio frequency discharge Supersonic flow

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Investigation of C_(60) Single Crystal by X-Ray Methods

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Chinese Physics Letters 1995年第4期12卷 217-220页

作者： LI Chaorong MAI Zhenhong wang Gang wang yutian WU Lansheng CUI Shufan XIE Sishen JIANG Jianhua Institute of Physics Academia SinicaBeijing 100080 Institute of Semiconductors Academia SinicaBeijing 100083 Beijing Synchrotron Radiation Laboratory P.O.Box 918Beijing 100039

C_(60) single crystals grown by a single-temperature-gradient technique were characterized by synchrotron radiation white beam x-ray topography and x-ray double crystal diffraction with Cu K_(α1) radiation on conventional x-ray *** results show that the crystal is rather well *** x-ray topographies give an evidence of dendritic growth mechanism of C_(60) single crystal,and x-ray double crystal diffraction rocking curve shows that there are mosaic structural defects in the sample.A phase transition at 249±1.5K from a simple cubic to a face centered cubic structure is confirmed by in situ observation of synchrotron radiation white beam x-ray topography with the temperature varing from 230 to 295K.

关键词： cubic topography crystal

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种子包衣技术及种衣剂研究进展

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现代农业科技 2024年第9期 8-12,17页

作者：刘怡然李茵董明然王雨田路娟陈曦黑龙江中医药大学黑龙江哈尔滨150006 中国医学科学院药用植物研究所北京100193

种子的活力与抗逆性会直接影响成熟作物的产量与质量,因而种植业需要有效快捷的种子处理技术。种子包衣技术以浸种、拌种为基础,可以将多领域的技术结合发展,是一种现代农业广泛应用的种子处理技术。种子包衣技术具有提高作物产量与质... 详细信息

种子的活力与抗逆性会直接影响成熟作物的产量与质量,因而种植业需要有效快捷的种子处理技术。种子包衣技术以浸种、拌种为基础,可以将多领域的技术结合发展,是一种现代农业广泛应用的种子处理技术。种子包衣技术具有提高作物产量与质量、提高机械播种适配性、减少对生态环境的污染、降低种植成本与人工成本等作用。本文对种子包衣技术与种衣剂的作用机制、包衣方法、类型及作用等进行了概括性叙述,并对其今后的研究发展方向进行了展望,旨在为今后种子包衣技术的研究提供参考。

关键词：种子包衣技术种衣剂展望

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