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STUDY OF THE CATALYTIC TECHNOLOGY IN THE OXIDATIVE COUPLING OF METHANE

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Journal of Energy Chemistry 1995年第2期 212-218页

作者： XIE Mao-Song wang Xue-Lin XU gui-fen wang Lin-Shang TAO Long-XiangDalian Institute of Chemical Physics, Academia Sinaca Datum, Liaomig 116023

The temperature of the catalyst bed in the oxidative coupling ofmethane would rise and be higher than the wall temperature when the amountof catalyst, the space velocity and the ratio of oxygen to methane wereincreased. Various aspects of the catalytic technology including the thickness ofthe catalyst bed, the mode of catalyst charge, the ratio of CHto Oand thespece velocity were studied. An optimum temperature of the catalyst bed forhigher methane conversion and Cselectivity was investigated. It was foundthat the burning of methane in the gas phase to form CO occurred at certaintemperatures with some ratios of oxygen to methane. Additionally, the effectof adding water to the reaction feed gas was studied.

关键词： methane oxidative coupling catalytic technology

中国式财政分权对公共教育支出影响的实证分析——基于非线性面板门槛模型的回归

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教育科学 2016年第5期32卷 11-15页

作者：史桂芬刘欢王佳东北师范大学经济学院吉林长春130117

主流的财政分权理论认为,分权有利于增加地方政府对教育等公共物品供给。基于2007-2013年中国省级面板数据,运用非线性面板门槛方法实证分析财政分权对公共教育支出的影响。研究发现,财政分权对地方政府公共教育支出影响存在非线性双重... 详细信息

主流的财政分权理论认为,分权有利于增加地方政府对教育等公共物品供给。基于2007-2013年中国省级面板数据,运用非线性面板门槛方法实证分析财政分权对公共教育支出的影响。研究发现,财政分权对地方政府公共教育支出影响存在非线性双重门槛特征,当财政分权度提高跨越门槛值,其对教育支出的负向影响程度随之降低。此外本文研究同时发现,转移支付对地方政府教育支出规模具有显著的负效应。

关键词：财政分权政府竞争公共教育支出面板门槛模型

SURFACE COMPOSITION AND OXIDATIVE COUPLING OF METHANE OVER Sm-Li-MgO CATALYST

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Journal of Energy Chemistry 1994年第4期 401-407页

作者： SHI Jun-Xiong XU gui-fen wang Tao wang Xue-Lin LI Yu-Shan wang Gong-WeiDalian Institute uf Chemical /Physics, Academia Sinica Dalian, Liaoning 116023Sheng Shi-ShanState Key Laboratory for CatalysisDalian Institute of Chemical Physics. Academia SinicaDalian, Liaoning 116023

The surface composition of Sm-Li-MgO catalysts and their behaviorin OCM have been investigated using the kinetic method,XRD and *** that lithium played an important role in the activity and C（CH+CH）selectivity of *** major reasons for catalyst deactivation arethe loss of lithium and the transformation of catalysts during the period ofreaction.

关键词： MgO Li SURFACE COMPOSITION AND OXIDATIVE COUPLING OF METHANE OVER Sm-Li-MgO CATALYST Sm XPS

Precipitation behaviors and mechanical properties of a solution-treated Mg-Gd-Nd-Zn-Zr alloy during equal-channel angular pressing process

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Journal of Magnesium and Alloys 2022年第1期10卷 257-266页

作者： Zhenzhen gui fen wang Junyi Zhang Dexin Chen Zhixin Kang School of Mechanical and Electrical Engineering Guangzhou University230 Wai Huan Xi RoadGuangzhou Higher Education Mega CenterGuangzhou 510006China Guangdong Key Laboratory for Advanced Metallic Materials Processing School of Mechanical and Automotive EngineeringSouth China University of TechnologyGuangzhou 510640China Institute of Advanced Wear&Corrosion Resistant and Functional Materials Jinan University601 Hmmgpu Avenue WestGuangzhou 510632China

A magnesium alloy processed by equal-channel angular pressing (ECAP) exhibited excellent microstructure refinement and improved strength and *** comprehensive mechanical properties of magnesium alloys have supported the expansion of their applications in the automotive,aerospace,and biomedical ***,pre-treatment of a solution-treated Mg-2.9Gd-1.5Nd-0.3Zn-0.3Zr alloy was conducted to investigate the precipitate behavior and microstructure evolution during the ECAP process.β;phase grains quickly precipitated from the solution-treated alloy,which accelerated grain refinement and enhanced the ductility after the ECAP process,as compared to the as-cast alloy reported in our previous ***,spherical precipitates (~200 nm) and fine phases (~100 nm) precipitated along the stripe-like Zn;Zr;phase,which formed a kabap-like structure dispersing homogeneously in the solution-treated alloy during the ECAP *** to grain refinement,dislocations,sphericalβ;precipitates,and texture evolution,the solution-treated alloy after eight passes of ECAP exhibited good comprehensive mechanical properties,with the ultimate tensile strength,yield strength,and elongation values reaching210.9 MPa,263.9 MPa,and 27.9%,respectively.

关键词： Mg-Gd-Nd-Zn-Zr alloy Precipitations Solid solution ECAP Mechanical properties

Natural products targeting mitochondria: A promising strategy for metabolic syndrome

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Chinese Journal of Natural Medicines 2020年第11期18卷 801-802页

作者： QIANG gui-fen State Key Laboratory of Bioactive Substance and Function of Natural Medicines Institute of Materia MedicaChinese Academy of Medical Sciences and Peking Union Medical College and Beijing Key Laboratory of Drug Target and Screening ResearchBeijing 100050China

Metabolic syndrome (MetS) is a complex pathophysiological state characterized by obesity, insulin resistance,dysglycemia, dyslipidemia and hypertension, which consequently contributes to coronary heart disease, stroke... 详细信息

关键词： coronary obesity Metabolic

Hydrogenation behaviors and characteristics of bulk Ti-6Al-4V alloy at different isothermal temperatures

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Rare Metals 2019年第12期38卷 1131-1135页

作者： Long Pan Chun-Ming wang Su-fen Xiao Yun-gui Chen School of Aeronautics and Astronautics Sichuan UniversityChengdu 610065China College of Materials Science and Engineering Sichuan UniversityChengdu 610065China

The bulk Ti-6Al-4V alloy was hydrogenated at the temperature range of 723-973 K,and the hydrogen absorption characteristics and hydrogen absorption kinetics were *** results show that there are two types of hydrogen absorption characteristics at different *** hydrogen content decreases,and the time reaching reaction equilibrium is shorten with the isothermal hydrogenation temperature ***,the mechanism of the hydrogen absorption kinetics is different at different *** incubation period exists at the initial hydrogen absorption stage below 823 K,and K(a2)(the reaction rate constant of Stage 2)>>K(a1)(the reaction rate constant of Stage 1).And there is no incubation period over 823 K,K(a1)>>K(a2).

关键词： Bulk Ti-6Al-4V alloy Hydrogen content Hydrogen absorption kinetic Temperature

Species-specific COI primers for rapid identification of a globally significant invasive pest, the cassava mealybug Phenacoccus manihoti Matile-Ferrero

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Journal of Integrative Agriculture 2019年第5期18卷 1042-1049页

作者： wang Yu-sheng TIAN Hu WAN Fang-hao ZHANG gui-fen State Key Laboratory for Biology of Plant Diseases and Insect Pests/Key Laboratory of Integrated Pest Management of Crop Ministry of Agriculture/Institute of Plant Protection Chinese Academy of Agricultural Sciences Caofeidian Sub-Center of Hebei Entry-Exit Inspection and Quarantine Technical Center

The globally invasive cassava mealybug Phenacoccus manihoti Matile-Ferrero is a pernicious pest of cassava,and its recent introduction into Asia has raised considerable *** slow or prevent further invasion,an accurate,simple,and developmental-stage-independent detection method for *** is *** the present study,a PCR method based on a species-specific mitochondrial DNA cytochrome oxidase I(SS-COI)marker was developed for rapid identification of *** pair of SS-COI primers(PMSSZW-1F and PMSSZW-1R)was designed based on sequence variations in the COI gene among *** and related mealybug *** of the primer pair was validated on 21 closely related *** tests were performed on four immature developmental stages and female *** tests demonstrated that at the relatively low concentration of(135.2±14.7)pgresuspended DNA,the specific fragment was detected in all ***,the SS-COI primer pair was assayed on three populations of *** from major exporting countries of *** PCR assay was proved to be a rapid,simple,and reliable molecular measure for the identification of *** tool will be useful for quarantine,monitoring,and management of this invasive pest.

关键词： Phenacoccus manihoti cassava mealybug invasive pest molecular identification species-specific COI primers

Edema of limbs as the primary symptom of gastric signet-ring cell carcinoma:A case report and literature review

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World Journal of Gastrointestinal Oncology 2022年第12期14卷 2404-2414页

作者： Bei wang Jing Chen Ying wang Ling-Li Dong gui-fen Shen Department of Rheumatology and Immunology Tongji HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430030Hubei ProvinceChina Division of Cardiology Department of Internal Medicine and Gene Therapy CenterTongji HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430030Hubei ProvinceChina Department of Pathology Tongji HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430030Hubei ProvinceChina

BACKGROUND Metastatic skin cancers are relatively rare dermatological *** usually present as nodules,erythematous lesions,scar-like lesions or other lesion ***-ring cell carcinoma(SRCC)is an uncommon histological type of gastric cancer that usually behaves aggressively and has a poor *** metastasis may be the first sign of clinically silent visceral cancer or recurrence of an internal *** SUMMARY Herein we report on the case of a 55-year-old man with edema of a lower extremity as the primary symptom which progressed from local to generalized pitting edema in the year following skin *** evidence from gastroscopic specimens and subcutaneous tissue biopsy showed typical signetring cells and gland-like ***,immunohistochemical analysis revealed positive pan-cytokeratin expression in tumor cells.A diagnosis of gastric SRCC with skin metastasis was ***,lymphoscintigraphy showed an obvious accumulation of radiotracer on the anterior and posterior sides of the right leg which indicated *** reviewed the relevant literature on subcutaneous metastases of gastric *** This rare case emphasizes the importance of physical examination as it may help elucidate the etiology of edema.

关键词： Gastric cancer Signet-ring cell carcinoma Skin metastasis Lymphedema Prognosis Case report

β1-受体阻滞剂控制心率对感染性休克患者血流动力学和预后的影响

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临床急诊杂志 2017年第7期18卷 522-525页

作者：刘振兴白祥琰李维桂峰艾芬汪一帆华中科技大学同济医学院附属武汉中心医院急诊科武汉430014

目的:探讨对感染性休克患者应用β1-受体阻滞剂控制心率对血流动力学以及预后的影响。方法:选取2012-01-2016-10我院重症监护病房收治的80例感染性休克患者为研究对象,随机分为对照组和观察组,每组40例。对照组给予常规抗感染性休克治疗... 详细信息

目的:探讨对感染性休克患者应用β1-受体阻滞剂控制心率对血流动力学以及预后的影响。方法:选取2012-01-2016-10我院重症监护病房收治的80例感染性休克患者为研究对象,随机分为对照组和观察组,每组40例。对照组给予常规抗感染性休克治疗,观察组在此基础上给予静脉注射盐酸艾司洛尔注射液。记录比较2组治疗前(T1)及治疗后24h(T2)、48h(T3)、72h(T4)的各项血流动力学指标、左室射血分数(LVEF)、左室舒张末期直径(LVEDD)及E峰与A峰比值(E/A),并对比2组住院期间的并发症发生率及病死率。结果:观察组心率在用药后明显下降,在24h、48h、72h时均低于对照组(P<0.05);2组MAP、SpO2比较,差异无统计学意义。治疗前2组患者心脏功能指标比较差异无统计学意义;治疗后观察组LVEDD、LVEF与E/A均高于对照组,差异具有统计学意义(P<0.05)。观察组急性肾损伤、急性呼吸窘迫综合症(ARDS)的发生率均低于对照组(P<0.05),此外观察组病死率为52.5%,显著低于对照组的85.0%,差异具有统计学意义(P<0.05)。结论:感染性休克患者使用β1-受体阻滞剂,可有效控制心率,改善心室的顺应性以及舒张功能,提高组织灌注水平,减轻对脏器的损伤,改善患者预后,因此可作为临床治疗感染性休克的有效药物选择之一。

关键词： β1-受体阻滞剂心率感染性休克血流动力学预后