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Effect of exogenous spastin combined with polyethylene glycol on sciatic nerve injury

Neural Regeneration Research 2019年第7期14卷 1271-1279页

作者： Yao-Fa lin Zheng Xie Jun Zhou hui-Hao Chen wan-wan Shao Hao-Dong lin Department of Orthopedics Changzheng Hospitalthe Second Military Medical University Department of Orthopedics the Second People's Hospital of Karamay

Polyethylene glycol can connect the distal and proximal ends of an injured nerve at the cellular level through axonal fusion to avoid Wallerian degeneration of the injured distal nerve and promote peripheral nerve ***,this method can only prevent Wallerian degeneration in 10% of axons because the cytoskeleton is not repaired in a timely *** of the cytoskeletal trunk and microtubule network has been suggested to be the key for improving the efficiency of axonal *** a microtubule-severing protein,spastin has been used to enhance cytoskeletal ***,we hypothesized that spastin combined with polyethylene glycol can more effectively promote peripheral nerve regeneration.A total of 120 male Sprague-Dawley rats were randomly divided into sham,suture,polyethylene glycol,and polyethylene glycol + spastin *** suture group rats,only traditional nerve anastomosis of the end-to-end suture was performed after transection of the sciatic *** polyethylene glycol and polyethylene glycol + spastin groups,50 μL of polyethylene glycol or 25 μL of polyethylene glycol + 25 μL of spastin,respectively,were injected immediately under the epineurium of the distal *** fiber regeneration distance,which was used to assess early nerve regeneration at 1 week after surgery,was shortest in the suture group,followed by polyethylene glycol group and greatest in the polyethylene glycol + spastin *** assessment of motor function recovery in rats showed that limb function was restored in polyethylene glycol and polyethylene glycol + spastin groups at 8 weeks after *** 1,2,4 and 8 weeks after surgery,sciatic functional index values and percentages of gastrocnemius muscle wet weight were highest in the sham group,followed by polyethylene glycol + spastin and polyethylene glycol groups,and lowest in the suture *** staining was utilized to assess the morphology of muscle *** change

关键词： nerve regeneration peripheral nerves Wallerian degeneration polyethylene glycol axonal fusion spastin peripheral nerve injuries Masson staining microtubule neural regeneration

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The　Investigation　of　Oxygen　Absorption　over　LaOF　by　Means　of　Raman　Spectroscopy

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Chemical Research in Chinese Universities 1995年第1期11卷 84-86页

作者： ZHOUmXiao-ping CHAO Zi-sheng wanG Shui-juwan hui-lin and tsai khi-Rui(Department of Chemistry, The National Key Laboratory ofSolid Surface Physics Chemistry , Xiamen Uniuarsity, Xianten , 361005 ) XIAMEN UNIV NATL KEY LAB SOLID SURFACE PHYS CHEMDEPT CHEMXIAMEN 361005PEOPLES R CHINA

ＴｈｅＩｎｖｅｓｔｉｇａｔｉｏｎｏｆＯｘｙｇｅｎＡｂｓｏｒｐｔｉｏｎｏｖｅｒＬａＯＦｂｙＭｅａｎｓｏｆＲａｍａｎＳｐｅｃｔｒｏｓｃｏｐｙＺＨＯＵｍＸｉａｏ－ｐｉｎｇ，ＣＨＡＯＺｉ－ｓｈｅｎｇ，ＷＡＮＧＳｈｕｉ－ｊｕＷ... 详细信息

ＴｈｅＩｎｖｅｓｔｉｇａｔｉｏｎｏｆＯｘｙｇｅｎＡｂｓｏｒｐｔｉｏｎｏｖｅｒＬａＯＦｂｙＭｅａｎｓｏｆＲａｍａｎＳｐｅｃｔｒｏｓｃｏｐｙＺＨＯＵｍＸｉａｏ－ｐｉｎｇ，ＣＨＡＯＺｉ－ｓｈｅｎｇ，ＷＡＮＧＳｈｕｉ－ｊｕＷＡＮＨｕｉ－ｌｉｎａｎｄＴｓａｉＫ...

关键词： Oxygen species Perturbed oxygen species O_2 absorption

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婴幼儿先天性心脏病体外循环术后胃肠功能紊乱的发生状况及影响因素分析

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中国妇幼保健 2024年第11期39卷 2036-2039页

作者：林淑皖张红涂惠琼广西中医药大学广西南宁530200 右江民族医学院广西百色533000 广西中医药大学附属瑞康医院

目的探讨婴幼儿先天性心脏病(CHD)体外循环术后胃肠功能紊乱的发生状况及影响因素。方法选择2019年1月1日—2021年12月31日在广西中医药大学附属瑞康医院胸心血管外科行体外循环术的327例CHD患儿作为研究对象,分为发生术后胃肠功能紊乱... 详细信息

目的探讨婴幼儿先天性心脏病(CHD)体外循环术后胃肠功能紊乱的发生状况及影响因素。方法选择2019年1月1日—2021年12月31日在广西中医药大学附属瑞康医院胸心血管外科行体外循环术的327例CHD患儿作为研究对象,分为发生术后胃肠功能紊乱(98例)和未发生术后胃肠功能紊乱(229例)两组。收集患儿的临床资料,采用多因素logistic回归模型分析CHD患儿体外循环术后发生胃肠功能紊乱的影响因素。结果胃肠功能紊乱症状构成情况:腹泻16例,呕吐22例,便秘13例,腹胀47例。logistic回归分析结果显示:年龄(OR=0.167,P<0.05)、体外循环时间(OR=0.231,P<0.05)、术后低体温(OR=14.696,P<0.05)是CHD患儿体外循环术后发生胃肠功能紊乱的影响因素。结论CHD患儿体外循环术后发生胃肠功能紊乱的风险较高,年龄、体外循环时间、术后低体温是影响因素,应及早对有以上影响因素的患儿制定干预措施,以减少术后胃肠功能紊乱的发生,加速患儿康复。

关键词：先天性心脏病体外循环婴幼儿胃肠功能紊乱影响因素

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Oxidative dehydrogenation of ethane to ethene over a superbase supported LiCl system

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Chinese Chemical Letters 2010年第11期21卷 1366-1369页

作者： Yu Bao Zhao Wen Wen Tan hui Li Xiao hui Jia hui lin wan School of Chemistry and Chemical Engineering University of South China Hengyang 421001 China State Key Laboratory for Physical Chemistry of Solid Surfaces Department of Chemistry and Institute of Physical Chemistry Xiamen University Xiamen 361005 China

LiCl-promoted superbase catalysts were found to be stable and highly selective to ethene for oxidative dehydrogenation of ethane,giving 84%ethane conversion and 74%ethene yield at 923 *** indicated that the stronger t... 详细信息

关键词： Oxidative dehydrogenation ODH Ethane Ethene Superbase LiCl

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METHANE OXIDATIVE COUPlinG ON ThO2/CaF2CATALYST

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Journal of Energy Chemistry 1995年第2期 202-211页

作者： CHAOZi-Sheng* ZHOU Xiao- Pingwan hui-lin tsai khi-RuiDepartment of Clie-mudry, Xiamen University Xiamen, Fujian 36 1 005

The oxidative coupling of methane（OCM）over ThO/CaFcatalystwas *** catalyst was found to be active and selective for *** 1153 K,the Cyield was 19.9% with 61.7% Cselectivityand 32.1% *** results indicated that F（?）Oexchangehappened between ThOand *** and Raman results suggestedthat the active oxygen species were generated and suitable for OCM reactionover the catalyst.

关键词： methane oxidative coupling catalyst ThO2/CaF2

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真菌氯(胺)消毒过程中消毒副产物的形成特征

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中国环境科学 2024年第10期44卷 5866-5874页

作者：李响吴戈辉田识琪万琪琪黄廷林文刚西安建筑科技大学环境与市政工程学院西北水资源与环境生态教育部重点实验室陕西省环境工程重点实验室陕西西安710055

以饮用水中常见的3种丝状真菌(黑曲霉、黄曲霉和波兰青霉)及大肠杆菌为研究对象,采用氯和氯胺作为消毒手段,探究消毒过程中消毒副产物(DBPs)的形成规律.结果表明,由于细胞成分及与消毒剂反应活性的差异,4种微生物形成DBPs的潜能不同,顺... 详细信息

以饮用水中常见的3种丝状真菌(黑曲霉、黄曲霉和波兰青霉)及大肠杆菌为研究对象,采用氯和氯胺作为消毒手段,探究消毒过程中消毒副产物(DBPs)的形成规律.结果表明,由于细胞成分及与消毒剂反应活性的差异,4种微生物形成DBPs的潜能不同,顺序为:黑曲霉>黄曲霉>青霉>大肠杆菌,氯消毒过程DBPs的产率分别为73.4,66.3,47.7,27.0μg/mgC,氯胺过程为17.4,14.5,10.4,7.7μg/mgC.曲霉氯消毒形成的DBPs更多来源于细胞壁,细胞壁成分中,黑色素对形成DBPs贡献远高于几丁质和葡聚糖,且对卤乙酸(HAAs)形成的贡献最大;青霉和细菌经消毒形成的DBPs更多来源于细胞内容物.曲霉氯(胺)消毒形成DBPs的种类和浓度受到消毒剂量、pH值、温度及溴离子浓度的影响.

关键词：丝状真菌消毒消毒副产物细胞壁细胞内容物

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Spatial Patterns and Interspecific Associations of Three Canopy Species at Different Life Stages in a Subtropical Forest, China

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Journal of Integrative Plant Biology 2008年第9期50卷 1140-1150页

作者： lin Li Shi-Guang Wei Zhong-Liang Huang wan-hui Ye Hong-lin Cao South China Botanical Garden Chinese Academy of Sciences Guangzhou 510650 China Graduate University of Chinese Academy of Sciences Beijing 100049 China Applied Science and Technology College Guilin University of Electronic Technology Guilin 541004 China

Spatial patterns of species at different life stages are an important aspect for understanding causal mechanisms that facilitate species co-existence. Using ripley＇s univariate L（t） and bivariate L12（t） functions, we analyzed the spatial patterns and *** associations of three canopy species at different life history stages in a 20-ha subtropical forest plot in Dinghushan Nature Reserve. Based on diameter at breast height （DBH）, four life stages were distinguished. Castanopsis chinensis and Schima superba showed a unimodal DBH distribution. Engelhardtia roxburghiana showed a bimodal curve. L（t） function analysis showed significantly aggregated distributions of all three species at later life stages and random distribution at early life stages at some scales. From the analysis of L12（t） function, the results showed the positive association was a dominant pattern for most species pairs at most scales but the intensity of association decreases with the increase of life stages. Juveniles of the three species had no negative intra- and interspecific associations with the older life stages. Only premature trees were suppressed by overmature trees at some scales. Considering these results, we found three canopy-dominant species that lacked regeneration. There was no direct competition occurring between understorey individuals. Young trees can grow well under conspecific species with two other species. Longevity and lack of regeneration led to a large number of trees stored in mature and overmature stages, therefore, intra- and inter-competition can be strong at later life stages.

关键词： Castanopsis chinensis Dinghushan Engelhardtia roxburghiana interspecific association Schima superba spatial pattern.

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ACTIVATION OF O2 AND CATALYTIC PROPERTIES OF CeO2/CaF2 CATALYSTS FOR METHANE OXIDATIVE COUPlinG

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Journal of Energy Chemistry 1993年第4期 280-289页

作者： ZHOU Xiao-Ping wanG Shui-Ju WENG Wei-Zheng wan hui-lin tsai khi-Rui Department of Chemistry and State Key Laboratory for Physical Chemistry of the Solid Surface Xiamen University, Xiamen, Fujian 361005

The investigation of the catalytic properties of the CaF2modifiedCeO2catalysts for the methane oxidative coupling （MOC） to prepare C2hydro-carbons indicated that most of the CaF2modified CeO2catalysts were efficientfor the MOC reaction. Addition of CaF2to CeO2can make the C2selectivity in-crease from 2. 2％（over CeO2） to 46-63％, and the CH4conversion increasefrom 26％ to 28-30％. When the CeO2content was decreased within a defi-nite region, the activity and C2selectivity of the catalysts increased remark-ably. The XRD characterization revealed that F-—O2-exchange happened be-tween CaF2and CeO2phases. TPD, XPS, Raman and ESR experiments indicat-ed that O-, O22-and O2-species were formed over CeO2/CaF2catalysts. Withthe increase of CaF2content in the catalysts, the kinds and the surface concen-trations of the above mentioned oxygen species decreased, while the C2selectivi-ty increased.

关键词： ACTIVATION OF O2 AND CATALYTIC PROPERTIES OF CeO2/CaF2 CATALYSTS FOR METHANE OXIDATIVE COUPlinG DMC over DMA

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刨花切削参数对白杨OSB刨花质量的影响

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林产工业 2024年第6期61卷 8-13,19页

作者：郑圣龙何雨晨李园解林坤万辉西南林业大学材料与化学工程学院云南昆明650223

通过控制盘式刨片机参数和切削工艺对影响白杨(Populustremeloides,Michx)刨花质量因素进行探究。以刨花的长度分布和抗拉强度,卷曲指数和能源消耗作为评价优质白杨刨花质量的评价指标,具体探究了木材含水率和木材纤维倾斜角,切削方向和... 详细信息

通过控制盘式刨片机参数和切削工艺对影响白杨(Populustremeloides,Michx)刨花质量因素进行探究。以刨花的长度分布和抗拉强度,卷曲指数和能源消耗作为评价优质白杨刨花质量的评价指标,具体探究了木材含水率和木材纤维倾斜角,切削方向和CAE式圆盘刨片机的底刀厚度、底刀后缩距离与飞刀微斜角的影响。结果表明:横向切削能以较低的能耗获得较高抗拉强度的刨花,而纵向切削能有效降低刨花卷曲指数。木材含水率以及底刀后缩距离可以降低刨花的卷曲指数。底刀厚度可以有效控制刨花长度等级为5的分布占比。设置飞刀微斜角可以获得具有较高抗拉强度的刨花。木材纤维倾斜角的存在会严重危害刨花质量,研究结果对于提高木材资源利用率、刨花质量和实现节能降耗,具有重要意义。

关键词：盘式刨片机含水率纤维倾斜角卷曲指数切削能耗

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HYDROFORMYLATION OF PROPYLENE AND ETHYLEN'E CATALYZED BY WATER-SOLUBLERu3（CO）9（TPPMS）3 CATALYST

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Journal of Energy Chemistry 1997年第4期 284-287+289-291页

作者： GAO Jing-Xing XU Pian-Pian ZHENG Rong-hui HUANG Pei-Qiang wan hui-lin tsai khi-Rui(Department of Chemistry Institute of Physical ChemistryState Key Laboratory of Physical Chemistry of Solid Surface Xiamen UniversityXiamen, Fujian 361005)

Water-soluble and air-stable triruthenium carbonyl clusterRu3(CO)9(TPPMS)3 (TPPMS=sodium diphenylphosphinobenzene-msulphonate) was used as catalyst to hydroformylate Propylene with syngas inWater. The main product is n-butyraldehyde, side-products are isobumpdehyde and a small amount of 1-butyl and isobutyl alcohols. At120℃ and propylene, CO and H2 pnal Pressures of 0.7 MPa, 2.0 MPa and2.0 MPa respectively, catalytic turnover of 61.2 ***-1.h-1 (products/cluster) and product n/i ratio of 15.9 were obtained. For ethylenehydroformylation, the main product is propanal, side-Products are3-pentanone, 1-Propanol and 2-methyl-pent-2-en-1-al. The catalyst Wascharacterized before and after the reaction by IR and X-ray photoelectronspectroscopy and the results were dianssed as related to the possiblecatalytic active species.

关键词： hydroformylation propylene ethylene water-soluble catalyst

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