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27篇 您的检索式:作者名="Guanwu"
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1Editorial显示文摘Professor LIU YouCheng is a pioneer of free radical chem-istry in China. He was elected as a Member of the Chinese Academy of Sciences in 1980 and as a Fellow of the Royal Society of Chemistry in 2008. Professor Liu set up the first laboratory of free radical chemistry in China atWANG GuanWu University of Science and Technology of China,Hefei 230026,China 2010Chinese Science Bulletin2010,55,25:8
2Effect of Lamb Age and in vitro Culture System of Oocytes on JIVET Technology显示文摘[Objectives] This study was conducted to investigate the effects of lamb age and in vitro culture system of oocytes on the results of juvenile in vitro embryo transfer( JIVET). [Methods]Ten Dorper × small-tailed Han lambs aged 5 to 10 weeks were induced to superovulate via i. p. injection of pregnant mare's serum gonadotropin( PMSG). The oocytes were matured in basal maturation solution or modified maturation solution,which was prepared by adding 200 μmol/L cysteine to the basal maturation solution. Then,the oocytes were fertilized in fertilization medium I containing 2% estrus sheep serum( ESS) or fertilization medium II containing 3 mg/ml bull serum albumin( BSA). Finally,the number of oocytes,oocyte maturation rate and cleavage rate of the lambs of different ages were determined. [Results]The average number of oocytes recovered per lamb was( 111. 00 ± 16. 97),( 139. 50 ± 28. 99),( 108. 50 ± 17. 68) and( 42. 00 ± 11. 31) for5-,7-,8-and 10-week-old Dorper × small-tailed Han lambs,respectively. The number of oocytes obtained from 5-,7-and 8-week-old lambs was significantly higher than that from 10-week-old lambs( P < 0. 05),but there was no significant difference among 5-,7-and 8-week-old lambs( P > 0. 05). The maturation rate of oocytes cultured in modified maturation solution was 3. 64% higher than that in basal maturation solution. The cleavage rate of oocytes in fertilization medium I was very significantly higher than that in fertilization medium II( P < 0. 01). [Conclusions] The results of JIVET can be improved by harvesting oocytes from lambs aged 5-8 weeks,adding a certain amount of cysteine into oocyte maturation solution,and a certain amount of ESS into fertilization medium.Yangyi MAO Huidi LUO Guanwu ZHANG Zhiwu WANG Peng ZHAO Jun LI Hongyu GUO Shenghua ZHOU Huihui GUO Chunyan LI 2019Agricultural Biotechnology2019,8,1:3
3Manganese(Ⅲ) acetate-mediated radical reaction of [60]fullerene with bromoacetic acid,3-chloropropionic acid or 1-naphthylacetic acid显示文摘The manganese(Ⅲ) acetate-mediated radical reaction of [60]fullerene (C60) with three carboxylic acids,that is,bromoacetic acid,3-chloropropionic acid,and 1-naphthylacetic acid,was investigated. The reaction of C60 with bromoacetic acid in the presence of 4-(dimethylamino)pyridine afforded the anticipated C60-fused lactone,while the reaction with 3-chloropropionic acid unexpectedly led to the formation of a novel C60-fused lactone with the loss of one molecule of HCl. Interestingly,the reaction with 1-naphthylacetic acid under similar conditions gave both C60-fused lactone and 1,4-adduct,yet each of them could be selectively obtained by controlling reaction conditions. It was also observed that the C60-fused lactone bearing a bulky naphthyl group existed as two isomers.LI FaBao ZHU SanE WANG GuanWu 2010Chinese Science Bulletin2010,55,25:2
4Deep white matter hyperintensity is spatially correlated to MRI-visible perivascular spaces in cerebral small vessel disease on 7 Tesla MRI显示文摘Background The association between perivascular space(PVS)and white matter hyperintensity(WMH)has been unclear.Normal-appearing white matter(NAWM)around WMH is also found correlated with the development of focal WMH.This study aims to investigate the topological connections among PVS,deep WMH(dWMH)and NAWM around WMH using 7 Tesla(7T)MRI.Methods Thirty-two patients with non-confluent WMHs and 16 subjects without WMHs were recruited from our department and clinic.We compared the PVS burden between patients with and without WMHs using a 5-point scale.Then,the dilatation and the number of PVS within a radius of 1 cm around each dWMH were compared with those of a reference site(without WMH)in the contralateral hemisphere.In this study,we define NAWM as an area within the radius of 1 cm around each dWMH.Furthermore,we assessed the spatial relationship between dWMH and PVS.Results Higher PVS scores in the centrum semiovale were found in patients with>5 dWMHs(median 3)than subjects without dWMH(median 2,p=0.014).We found there was a greater dilatation and a higher number of PVS in NAWM around dWMH than at the reference sites(p<0.001,p<0.001).In addition,79.59%of the dWMHs were spatially connected with PVS.Conclusion dWMH,NAWM surrounding WMH and MRI-visible PVS are spatially correlated in the early stage of cerebral small vessel disease.Future study of WMH and NAWM should not overlook MRI-visible PVS.Yajing Huo Yilin Wang Cen Guo Qianyun Liu Lili Shan Mingyuan Liu Haibo Wu Guanwu Li Huihui Lv Lingdan Lu Yintin Zhou Jianfeng Feng Yan Han 2023Stroke & Vascular Neurology2023,8,2:2
5Resveratrol-induced apoptosis is enhanced by inhibition of autophagy in esophageal squamous cell carcinoma显示文摘Qishan Tang Guanwu Li Xiaoning Wei Jun Zhang Jen-Fu Chiu Don Hasenmayer Dianzheng Zhang Hao Zhang 2013Cancer Letters2013,,2:1
6ANTIOXIDANT AND ANTIMICROBIAL EFFECTIVENESS OF CATECHIN‐IMPREGNATED PVA–STARCH FILM ON RED MEAT显示文摘JIH‐GUANWU PEI‐JINWANG 2010Journal of Food Quality2010,,6:1
7Synthesis and characterization of cleavable cationic surfactants with a 1,3-dioxane ring 显示文摘Wang GuanWu Yuan XiaoYou Liu YouCheng 1995Journal of the American Oil Chemists'' Society1995,72,1:1
8Ferric perchlorate-promoted reaction of [60]fullerene with β-keto esters显示文摘The ferric perchlorate-promoted reaction of [60]fullerene (C60) with ethyl 2-methylacetoacetate generates fullerenyl hemiketal as a mixture of trans and cis isomers,while the reaction with ethyl acetoacetate gives a C 60-fused dihydrofuran derivative.A possible reaction mechanism for the formation of these products is proposed.FaBao Li SanE Zhu Xun You GuanWu Wang 2012Chinese Science Bulletin2012,57,18:1
9Investigation of solvatochromism and aggregation behavior of C_(60)(C_4H_(10)N^+)I^- in binary solvent mixtures显示文摘Water-soluble N,N-dimethyl[60]fulleropyrro-lidinium iodide (C60(C4H10N+)I-), when dissolved in binarymixtures of tetrahydrofuran and water, was found to exhibit remarkable solvatochromism. Correspondingly, the UV-vis spectra showed obvious changes by variation of the solventcomposition of tetrahydrofuran and water. It was found that both concentration and temperature had strong influence on the stability of monomer-state C60(C4H10N+)I-, while theyhad little effect on the stability of aggregated C60(C4H10N+) I-The formation of cluster was confirmed by TEM and AFMmeasurements.WANG Guanwu1, HAO Erhong1, JIAO Lijuan1 & YAN Lifeng2 1. Department of Chemistry, University of Science and Technology ofChina, Hefei 230026, China 2. Department of Chemical Physics, University of Science and Technol-ogy of China, Hefei 230026, China Correspondence should be addressed to Wang Guanwu (e-mail: gwang @ustc.edu.cn) 2003Chinese Science Bulletin2003,48,18:1
10Preparation and Properties of Sulfonate Salt-Type Cleavable Surfaetants with a 1,3-Dioxane Ring显示文摘Wang Guanwu Yuan Xianyou Liu Youcheng Lei Xuegong 1994Am Oil Chem Soc1994,71,7:1
11Phosphotungstic acid catalyzed amidation of alcohols 显示文摘Wang Guanwu Shen Yebing Wu Xueliang 2008European Jounaal of Organic Chemistry2008,,25:1
12Autophagic cell death induced by resveratrol depends on the Ca 2+ /AMPK/mTOR pathway in A549 cells显示文摘Jun Zhang JenFu Chiu Hongwei Zhang Tingting Qi Qishan Tang Ke Ma Hong Lu Guanwu Li 2013Biochemical Pharmacology2013,,2:1
13DNA methylation of a non-CpG island promoter represses NQO1 expression in rat arsenic-transformed lung epithelial cells显示文摘Ningyu Huang Xiaojuan Pei Wenbo Lin Jen-Fu Chiu Tao Tao Guanwu Li 2018Acta Biochimica et Biophysica Sinica2018,50,8:0
14Current Situation and Future Development of Timber Structural Houses in China显示文摘The current situation and opportunities of timber structural houses development in China wereintroduced and analyzed. There is a great potential market of timber structural housing in China. In the meantime, some problems about wooden housing should be paied more attention to and be solved in the future.ZHOU Guanwu DUAN Xinfang 2005Chinese Forestry Science and Technology2005,4,3:0
15The Probability Neural Network for Lithologic Idenfication显示文摘This paper studies lithologic identification from log information based on PNN(Probability Neural Network).The models lithologic identification of log interpretation has been built and is applied to predict the testing samples.The prediction result has higher consistency with the practical cases.The prediction and convergence rate have been greatly improved compared to the tradi-tional BP Neural Networks,and the computational complexity has also been greatly reduced.The results show that the PNN is very promising for the application of lithologic identification.CHENG GUOJIAN ZHOU GUANWU WANG XIAOXIAO 2007微计算机信息2007,23,06S:0
16Effects of Metal Ions and EDTA on Free Radical Reaction Intermediates of Laccase-catalyzed Oxidation of Wood Powder from Szemao Pine显示文摘Certain activator was expected to be developed to improve the free radical intermediates relative intensity, and thus to enhance the adhesion between wood fibers when fiberboard was made by laccase treated wood fibers. Reactive oxygen species (ROS) was detected in laccase-catalyzed oxidation of wood powder using ESR spin trapping technique. The effects of five metal ions (Cu2+, K+, Fe2+, Mg2+, Fe3+) and EDTA on ROS relative strengths were investigated under the condition of pH 5.6 by electron spin resonance spectrometry. The result shows that Cu2+ slightly activates the free radical reaction, and Fe2+ ion has a significant inhibitive effect on the ROS relative strength in the suspension liquid. There is a marked inhibition of the ROS relative intensity when 0.5 mmol/L EDTA is used. The metal ions that enhance laccase activity may be utilized to increase physical properties of fiberboard made by laccase oxidized wood fibers.ZHOU Guanwu DUAN Xinfang CAO Yongjian CHEN Yongsheng CAO Yuanlin 2006Chinese Forestry Science and Technology2006,5,2:0
17A 1,2,3,4-Tetrahydrofullerene Derivative Generated from a [60]Fulleroindoline: Regioselective Electrosynthesis and Computational Study显示文摘A 1,2,3,4-tetrahydro[60]fullerene with a five-membered heterocycle fused to a[5,6]junction was obtained with high regioselectivity by electrochemical functionalization of a[60]fulleroindoline.The structure was determined by spectroscopic data.A plausible reaction mechanism supported by computational calculations is proposed.Yang Xiao Guanwu Wang 2014Chinese Journal of Chemistry2014,32,8:0
18Exploration and practice of English teaching in Stomatology显示文摘Guanwu Rao 2015International Journal of Technology Management2015,,7:0
19ON THE STATUS AND ROLE OF PROTECTION OF FOREST - FIRE DISASTERCao Guanwu(Anti - fire Office of Henan Province) 1995Natural Disaster Reduction in China1995,,1:0
20Effect of cefodizime on cytokines expression in mouse neutrophils and its related mechanism显示文摘Objective: To explore the regulating effects of cefodizime on cytokines expression of neutrophil response to Klebsiella pneumoniae (Kle. p) treatment. Methods: We detected the types and expression of cytokines secreted by neutrophils by cDNA array and RT-PCR. We also analyzed the changes of signal transduction in this process by detecting the expression of toll like receptor 4 (TLR4) and the inhibitor factor of κBα (I-κBα) expressed by neutrophils. The activity of NF-κB DNA-binding in neutrophils was measured by electrophoretic mobility shift assay (EMSA). Results: Cefodizime increased the neutrophils production of TNF-α, IL-1β and the mRNA expression of TLR4 in the early stage of Kle. p stimulation in mice, which seemed corresponding to the enhanced NF-κB DNA-binding activity. Conclusion: Cefodizime regulates the cytokines expression of neutrophils through the LPS-TLR4-NF-κB pathway by affecting the expression of TLR4 mRNA and the DNA binding activities of NF-κB in mice with the challenge of Kle. p.Song Hui Qian Yuanshu Li Guanwu 2008Journal of Medical Colleges of PLA(China)2008,23,4:0
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