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Effect of prolonging interval time between coronary angiography and percutaneous coronary intervention on X-ray-induced DNA double-strand breaks in blood lymphocytes

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Chinese Medical Journal 2014年第11期127卷 2058-2062页

作者： Zhang guoru Li Yongjun Wang Mei Guo Bingyan Lyu Xinhu Liu Jin-bo Liu Dongchao Chang Liang Department of Cardiovascular Disease Second Hospital of Hebei Medical University Shijiazhuang Hebei 050005 China Department of Cardiology Disease the First Hospital of Shijiazhuang City Shijiazhuang Hebei 050015 China

Background It is desirable to minimize the risk of adverse radiation effects associated with percutaneous coronary *** aim of this study was to determine the impact of prolonging the interval between coronary angiography and percutaneous coronary intervention on X-ray-induced DNA double-strand breaks in blood lymphocytes using γ-H2AX immunofluorescence *** Blood samples of eight patients were taken before the first exposure to ionizing radiation,10 minutes,20 minutes,30 minutes,1 hour,and 24 hours after the last exposure to determine the γ-H2AX foci repair ***-eight patients undergoing percutaneous coronary intervention were randomized to an intermittent radiation exposure group and a continuous radiation exposure *** samples were taken before coronary angiography and 15 minutes after the last *** enumerating γ-H2AX foci,the impact of prolonging the interval on DNA double-strand breaks was *** t-test was used to compare the difference in DNA double-strand breaks between the two *** An increase in foci was found in all patients received percutaneous coronary *** maximum number of γ-H2AX foci was found 10-20 minutes after the end of the last *** was no statistically significant difference between the two groups in γ-H2AX foci at *** average there were （0.79±0.15） γ-H2AX foci induced by interventional X-rays per lymphocyte in the continuous radiation exposure group and （0.66±0.21） in the intermittent radiation exposure group after exposure （P〈0.05）.Conclusions A significant number of γ-H2AX foci develop following the percutaneous coronary intervention *** number of X-ray-induced DNA double-strand breaks may be decreased by prolonging the interval time between coronary angiography and percutaneous coronary intervention to 30 minutes.

关键词： heart catheterization radiation DNA double-strand breaks time factors

Immunology of Kaschin-Beck Disease:Studies on lymphocyte subsets, humoral immunity and their relationship with selenium

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中国地方病防治 2003年第6期18卷 335-338页

作者： WANGZhi-lun ZHAIJun-min guoru-ning CheNJing-hong CheNYan ZHOUYang JeanVanderpas InstituteofEndemicDisease MedicalSchoolofXi‘anJiaotongUniversityXi’an710061China TheSecondInstituteofControlandResearchofEndemicDiseasesofJilinProvince JilinChina FreeUniversityofBrussels BrusaelsBelgium

Objective To study the humoral immunity status and distribution pattern of lymphocyte subgroups of peripheral blood mononuclear cell (PBMC) in patients with Kaschin-Beck Disease (KBD), and their relationship with erythrocyte *** 23 X-ray diagnosed patients, 22 age- and sex- matched healthy children in KBD affected area (KAA), And 25 in KBD non-affected area (KNAA) were randomly selected. Immunohistochemistry with monoclonal antibodies anti-CD4, anti-CD8, anti-CD20 was conducted to analyze the lymphocyte subsets. Serum IgM, IgA, IgG, Complement C3 and C4 were assayed using rate nephelometry (Array 360 System, USA). The contents of erythrocyte selenium was determined by 2,3-diaminonaphthalene fluorescence assay. Results CD4+ and CD8+ cells percentage in PBMCs and serum IgA were significantly lower in KAA than those in KNAA(Phe CD4 cell percentage (r=0.625,Phe serum IgA and CD4+ percentage (r=0.130, P>0.05).Conclusion Taken together, our results suggested that children in KAA had a comparably low cellular immunity level manifested by the marked depression of CD4 and CD8 cells percentage, and their humoral immunity status was also in a state of moderate immune suppression. Of this immune disorder in KBD patients, selenium deficiency probably played a critical role via affecting the distribution pattern of peripheral blood lymphocyte. Selenium-deficiency and immune impairment maybe both have something to do with the cause-effe

关键词：人类免疫系统免疫学研究相关因素克山病

New and newly recorded species of the subgenus Flagellozetes(Cosmogalumna)(Acari:Oribatida:Galumnidae) from China

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Entomotaxonomia 2018年第2期40卷 104-111页

作者： Wenqin LIANG Maofa YANG guoru REN Guizhou Center for Disease Control and Prevention Guiyang Guizhou 550004 China Institute of Entomology Guizhou University The Provincial Key Laboratory for Agricultural Pest Management of Mountainous Region Guiyang Guizhou 550025 China

Material and methods Soil sample were collected by soil-corer and afterwards extracted using Tullgren funnels. Measurements and descriptions are based on specimens mounted in temporary cavity slides and studied using a light microscope equipped with a drawing tube. All body measurements are presented in micrometers. The body length was measured in lateral view, from the tip of the rostrum to the posterior edge of the ventral plate, to avoid discrepancies caused by different degrees of notogastral distension. Notogastral width refers to the maximum width in dorsal aspect. Lengths of body setae were measured in lateral aspect. Formulas for leg setation are given in parentheses according to the sequence trochanter-femur-genu-tibia-tarsus （famulus included）.

关键词： soil mites taxonomy distribution

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双时间步法在二维浅水方程求解中的应用

水科学进展 2014年第4期25卷 542-549页

作者：喻海军黄国如武传号华南理工大学土木与交通学院广东广州510640 华南理工大学亚热带建筑科学国家重点实验室广东广州510640

针对传统算法效率低的问题,将隐式双时间步法应用于求解二维浅水方程,建立了非结构网格下高效的有限体积模型。在应用双时间步法时,虚拟时间层中的定常问题采用高效的隐式LU-SGS(Lower-Upper Symmetric Gauss-Seidel)方法进行迭代求解... 详细信息

针对传统算法效率低的问题,将隐式双时间步法应用于求解二维浅水方程,建立了非结构网格下高效的有限体积模型。在应用双时间步法时,虚拟时间层中的定常问题采用高效的隐式LU-SGS(Lower-Upper Symmetric Gauss-Seidel)方法进行迭代求解。通过模拟计算4个典型算例以及与传统显式算法进行比较,对模型精度、效率及处理实际问题能力进行检验,分析了时间步长、内迭代次数对模型性能的影响。结果表明,双时间步法放宽了稳定性对时间步长的限制,时间步长可取到显式格式10倍以上,计算耗时减少了50%以上,模型具有良好精度与适应性,具有较好的推广应用价值。

关键词：双时间步法二维浅水方程有限体积法非结构网格

Identification of A Strain HN-1 against Banana Wilt Disease and Determination of Its Antagonism

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Plant Diseases and Pests 2013年第4期4卷 12-16页

作者： Shen Linbo Xiong guoru Dong Lisha Kong Ran Guo Ting Zhang Shuzhen Sugarcane Research Center Institute of Tropical Bioscience and BiotechnologyCATAS / Key Laboratory of Biology and Genetic Resources of Tropical CropsMinistry of Agriculture College of Agriculture Hainan University

[Objective] The paper was to identify strain HN-1 against banana wilt disease and to determine its antagonism. [Method] The strain HN-1 was ob- tained from the soil in fields heavily infected by Fusarium oxysporum f. sp. cubense （FOC）. Antagonism of the strain against F. oxysporum was tested via dual-cul- ture and inhibition test on spore germination. [Result] HN-1 effectively inhibited mycelial growth and spore germination of F. oxysporum, Strain HN-1 was identi- fied as BrevibaciUus brevis according to its characteristics in morphology, physiology and biochemistry and its 16S rDNA sequence. The strain showed high inhibition effect on 15 species of fungal pathogens in the dual-culture trials with fungal pathogens. [ Conclusion] The study provides theoretical basis for application of strain HN-1 in agricultural fields.

关键词： Banana wilt disease BrevibaciUus brevis HN-1 Antagonism

Virus Infection Situation of 37 Sugarcane Varieties in Guilin City

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Plant Diseases and Pests 2017年第6期8卷 24-27页

作者： Shen Linbo Xiong guoru Wang Wenzhi Feng Xiaoyan Feng Cuilian Zhang Shuzhen Sugarcane Research Center of Chinese Academy of Tropical Agricultural Sciences/Institute of Tropical Bioscience and Biotechnology Chinese Academy of Tropical Agricultural Sciences/Key Laboratory of Biology and Genetic Resources of Tropical Cropsthe Ministry of Agriculture

To understand virus infection situation of integrated demonstration and regional test sugarcane varieties in national sugarcane system in Guilin City,Guangxi Province,leaf samples with or without symptoms were collected from 37 sugarcane varieties,and five kinds of viruses were detected by RT-PCR with specific primers,including Sugarcane yellow leaf virus( SCYLV),Sugarcane streak mosaic virus( SCSMV),Sorghum mosaic virus( SrM V),Sugarcane mosaic virus( SCMV) and Sugarcane bacilliform virus( SCBV). The results showed that SCYLV was detected from four sugarcane varieties,and the detection rate was10. 81%; SCSMV was detected from five sugarcane varieties,and the detection rate was 13. 51%; SrM V was detected from four sugarcane varieties,and the detection rate was 10. 81%; SCMV had not been found; SCBV was detected from 27 sugarcane varieties,and the detection rate was 72. 9%. Additionally,mixed infection of different viruses was widespread,and the total mixed infection rate was 21. 62%. Thus,integrated demonstration and regional test sugarcane varieties in national sugarcane system in Guilin City had been seriously infected by viruses,and mixed infection of different viruses was common. The paper will provide a reference for breeding and popularization of antiviral sugarcane varieties.

关键词： Sugarcane yellow leaf virus(SCYLV) Sugarcane streak mosaic virus(SCSMV) Sorghum mosaic virus(SrMV) Sugarcane mosaic virus(SCMV) Sugarcane bacilliform virus(SCBV)

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扩散波洪水演算研究进展

水利水电技术 2000年第8期31卷 31-35页

作者：黄国如芮孝芳清华大学北京市100084 河海大学南京市210098

扩散波方程是通过忽略动力方程中的惯性项后与连续方程联立求解而得 ,经大量的实践证明不失为一种既具有足够精度又相对简单的洪水演算方法 .近 30年来 ,该方法有了显著的发展 .文中对扩散波方程的导出进行了比较全面的回顾 ,重点介绍... 详细信息

扩散波方程是通过忽略动力方程中的惯性项后与连续方程联立求解而得 ,经大量的实践证明不失为一种既具有足够精度又相对简单的洪水演算方法 .近 30年来 ,该方法有了显著的发展 .文中对扩散波方程的导出进行了比较全面的回顾 ,重点介绍了扩散波方程在各种条件下的解 ,对采用扩散波来近似进行洪水演算所造成的误差也作了简要的回顾 .在此基础上分别进行了若干的评述 .

关键词：扩散波洪水演算边界条件误差分析

氮掺杂还原氧化石墨包覆金属钴复合材料的制备及其氧还原性能的研究

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北京化工大学学报（自然科学版） 2019年第3期46卷 43-51页

作者：陈圈生银凤翔何小波李国儒北京化工大学化学工程学院北京100029 常州大学石油化工学院江苏省绿色催化材料与技术重点实验室常州213164 北京化工大学常州先进材料研究院常州213164

采用搅拌反应法制备了ZnCo(ZIF)与氧化石墨(graphite oxide, GO)的复合材料,热处理得到Co@N-doped rGO催化剂。通过X射线衍射(X-ray diffraction, XRD)和扫描电子显微镜(scanning electron microscopy, SEM)对催化剂进行结构表征,通过X射线光电子能谱(X-ray photoelectron spectroscopy, XPS)对催化剂进行表面元素分析,分别考察了金属(Zn和Co)加入量和热处理温度对催化剂氧气还原反应(oxygen reduction reaction, ORR)催化性能的影响,结果表明:所制备的催化剂整体呈层状分布,表面附着金属小颗粒团簇;随着金属加入量的增加,催化剂的ORR催化性能先增强后减弱;随着热处理温度的升高,催化剂的ORR催化性能先增强后减弱。所制备的S-2-850催化剂具有最好的ORR催化性能,在0.1 mol/L KOH电解液中,其起始电位和半波电位分别为0.871 V和0.804 V,在相同测试条件下活性稳定性优于20%Pt/C。

关键词：金属有机骨架氧化石墨氧气还原反应

Control Effects of 12 Kinds of Insecticides on Sugarcane Pests at Different Periods

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Plant Diseases and Pests 2013年第5期4卷 33-37页

作者： Wu Suran Xiong guoru Zhang Shuzhen Zhang Yuliang Wang Jungang Zeng Jun Yang Benpeng Institute of Tropical Bioscience and Biotechnology of Chinese Academy of Tropical Agricultural Sciences/Sugarcane Research Center of Chinese Academy of Trop- ical Agricultural Sciences/Key Laboratory of Biological and Genetic Resources of Tropical Crops Ministry of Agriculture

[ Objective] The paper was to study control effects of 12 kinds of insecticides on sugarcane pests at different periods. [ Method] By field experiment, the control effects of different insecticides against sugarcane pests at planting stage, seedling stage and tillering stage of sugarcane were studied. [ Result] After seedcane was treated by Chlorantraniliprole, Durivo and Seed soaking, the dead heart seedlings were significantly reduced in fields, and the control effects were 87.13% ± 12.87%, 85.22% ± 14.78%, 82.71% ± 17.29%, respectively ; Durivo （ seedling emergence rate is 63.00% ± 10.30% ） and Seed soaking （ seedling emergence rate is 57.75 % ± 4.50% ） could also significantly enhance seedling emergence rate. After ＂removal-irrigation＂ treatment during seedling stage, the con- tml effects of Flubendiamide （76.26% ±4.31% ） and Chlorantraniliprele （61.66% ±6.65% ） against sugarcane stem borer were significantly higher than Virtako （60.17% ±7.06%）, Deltamethrin（38.75% ±9.88%）, lambda-cyhalothrin （54.06% ±6.83%）, 18% Dimehypo AS （37.98% ±10.31%） and Dipterex （38.64% ±9.34% ）. During tillering stage, with the increased application of 3.6% Dimehypo GR in cultivation and earthing up, the control effect on stem borer was significantly increased, and the control effect reached （72.03%± 17.06% ） as the dosage was 120 kg/hm2 ; when the dosage of phoxim exceeded 30 kg/hm2, the control effect on underground pests reached 44.00% ± 14.80%, and the control effect did not have significant difference as the dosage was ranged from 30 kg/hm2 to 60 kg/hm2. [ Conclusion] The paper provided scientific basis for selection of different control methods, different chemicals and dosages against pests during different periods.

关键词： Pest insects Sugarcane Insecticide Control effect