检索结果-南通市图书馆

Thin Film of Mesoporous MCM-41 Grown on Indium-Tin-Oxide Glass Substrate

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Chemical Letters 1999年第4期10卷 335-338页

作者： Zhang, J Xiong, hm Ding, H Cai, Q Chen, JS Pang, WQ Jilin Univ Key Lab Inorgan Synthesis & Preparat Chem Changchun 130023 Peoples R China Jilin Univ Dept Chem Changchun 130023 Peoples R China Chongqing Teachers Coll Dept Chem Yongchuan 402168 Peoples R China

From a basic solution containing celyltrimethylammonium cations as the template, thin film of mesoporous MCM-41 has been grown on the surface of a pre-treated indium-tin-oxide conducting glass substrate. The channel axis of the film is oriented parallel with the surface plane of the substrate, and the film is stable after careful removal of template in vacuum.

关键词： mesoporous MCM-41 film ITO glass substrate basic medium synthesis

Dose-dependent effect of histamine on antibody generation in vivo

在线全文

学校读者我要写书评

暂无评论

Asian Pacific Journal of Tropical Medicine 2010年第2期3卷 112-116页

作者： Tripathi T Shahid M Khan hm Khan RA Siddiqui MU DePartment of Biochemistry Faculty of MedicineJawaharlal Nehru Medical College and HospitalAligarh Muslim University Department of Microbiology Faculty of MedicineJawaharlal Nehru Medical College and HospitalAligarh Muslim University Department of Pharmacology Faculty of MedicineJawaharlal Nehru Medical College and HospitalAligarh Muslim University Department of Biochemistry Faculty of MedicineJawaharlal Nehru Medical College and HospitalAligarh Muslim University

Objective:To delineate immunomodulatory role of histamine on antibody generation pr of ile in rabbit in the present dose-dependent histamine ***:The cohort comprised of three groups(Ⅲ,ⅣandⅤ),containing six rabbits each,and received subcutaneous histamine 50μg/kg×bis in die(b.i.d.),100μg/kg×*** 200μg/kg X b.i.d.,respectively for 10 days (starting from the 1st day).They were subsequently immunized on the 3rd day with intravenous injection of sheep blood cell(SRBC)(1×10 cells/mL).GroupⅡ(positive control)(n=6) received vehicle(sterile distilled water) and immunized at day 3 similarly while groupⅠ(negative control) (n=6) remained non-immunized and received only *** experimentations were performed in *** samples were collected on pre-immunization(pre-I)(day 0),as well as on days 7-,14-,21-,28- and 58- post-immunization(post-I).Immunological parameters[total immunoglobulins(Igs),IgM and IgG]were analyzed by enzyme linked immunosorbent assay (ELISA) ***:Histamine could influence a detectable antibody response to SRBC as early as day 7-post-I,which lasted until day 58- *** results were found statistically significant(P< 0.05).Conclusions:Our results provide evidence that histamine has a short-term effect on antibody generation(until its presence in the body),and the antibody generation titer in vivo were affected by the concentration of histamine.

关键词： Histamine Immumomodulation T-cell dependent antibody response Humoral immune response SRBC

Pathogenetic factors affecting gastroesophageal refluxin patients with esophagitis and concomitant duodenal ulcer:a multivariate analysis

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 1998年第2期4卷 61-65页

作者： Zhu, hm Huang, X Deng, CZ Porro, GP Pace, F Sangaletti, O Jinan Univ Coll Med Affiliated Hosp 2 Dept Gastroenterol Shenzhen 518001 Guangdong Peoples R China Milan Univ Hosp Div Gastroenterol Milan Italy

AIM To assess the relationship between gastric acid output (GAO) and both pattern of gastroesophageal reflux (GER) and esophageal lesions, and to evaluate the role of GAO and other potential pathogenetic factors in the development of esophagitis. METHODS Gastric acid secretory testing and 24 h intraesophageal pH monitoring were performed in 31 patients with esophagitis and concomitant duodenal ulcer (E+DU) and compared with those of 72 patients with esophagitis (E) alone. RESULTS The GAO in patients with E+DU was significantly higher than in patients with E ( P 0 05). A multiple regression analysis with stepwise deletion showed that the pre sence of hiatal hernia (HH), GER in upright position and age appeared to correlate significantly with the presence of esophagitis. CONCLUSIONS No parallel relationship between GAO and severity of GER or esophageal lesions exists in patients with E+DU, and that GAO is not a major pathogenetic factor in GER disease.

关键词： esophagitis/etiology gastric acid/secretion duodenal ulcer/etiology gastroesophageal reflux/etiology hydrogen ion concentration multivariate analysis

Late Mesozoic crust-mantle interaction in southeastern Fujian——Isotopic evidence from the Pingtan igneous complex

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Science Bulletin 1997年第6期42卷 495-498页

作者： Dong, CW Zhou, XM Li, hm Ren, SL Zhou, XH NANJING UNIV DEPT EARTH SCINANJING 210093PEOPLES R CHINA

UNDERPLATING Of mantle-derived basaltic magma and interacting with the lower crust materials are believed to be an important mechanism for the growth and transformation of the crust.

关键词： crust-mantle interaction igneous complex southeastern Fujian.

A Model for Liquid-Diffusion Catalytically Grown Fibrous Carbon Material

在线全文

学校读者我要写书评

暂无评论

Journal of Materials Science & Technology 1999年第1期15卷 1-4页

作者： Zhang, WG Cheng, hm Su, G Fan, YY Li, F Shen, ZH Zhou, BL Chinese Acad Sci Met Res Inst Shenyang 110015 Peoples R China

A mechanism for the catalytically growth of vapor grown fibrous carbon (VGFC) preparing from the floating catalyst method has been proposed, in which liquid diffusion-determined diffusion of carbon atoms through catalyst particles is described mathematically, and the physical and chemical properties of the catalyst particles during the growth process are taken into account. From the model the growth rate and grown length of VGFC are calculated theoretically which coincides with the experimental data; and the necessity of reducing gas such as hydrogen in preparing VGFC is explained as to reduce Fe3C, which acts as intermediate catalyst shown by the model. Fe3C formed on the surface of gamma-Fe will stop the growth of carbon fiber if they can not be reduced at once. Additionally, the growth temperature and diameter of VGFC are also discussed in the paper.

关键词： FILAMENTOUS CARBON NICKEL FIBERS IRON DECOMPOSITION CATALYSTS

Surgical treatment of usual type vulvar intraepithelial neoplasia： a study at three academic hospitals

在线全文

学校读者我要写书评

暂无评论

Chinese Medical Journal 2014年第4期127卷 784-786页

作者： Gu Y Zhu L Li XC Lang JH Jin hm Wang dv Department of Obstetrics and Gynecology Peking Union Medical College Hospital Peking Union Medical College Beijing 100730China Department of Gynecology Women&#39 s Hospital School of MedicineZhejiang University Hangzhou Zhejiang 310006 China Department of Obstetrics and Gynecology Tongji Hospital Tongji Medical College Huazhong University of Science and TechnologyWuhan Hubei 430030 China

Vulvar intraepithelial neoplasia （VIN） is a relatively uncommon disease that includes all of the precancerous lesions of vulvar malignancies with an incidence of approximately 2.5 per 100 000 *** 2004,the International Society for the Study of Vulvovaginal Diseases （ISSVD） abolished the old VIN grading system and introduced a two-tier classification for squamous VIN：the usual type and the differentiated type;the term VIN applied only to histologically ＆quot;high-grade＆quot; squamous lesions （old terms VIN 2 and VIN 3）.1 The two types of VIN differ in etiology,morphology,biology,clinical features and malignant *** usual type VIN （uVIN）,which is associated with HPV infection,is the most comrnon subtype,accounting for more than 80% of all VIN ***,the old 3-grade system of the VIN terminology is still used in most of the hospitals in *** this presentation,we categorized the patients with the ISSVD 2004 classification standard and attempted to describe the clinical features and the outcome of surgical treatment of uVIN using the retrospective data from three academic hospitals in China.

关键词： treatment vulva surgical excision vulvar intraepithelial neoplasia

SYNTHESIS　AND　CATALYTIC　PROPERTIES　OF　LAYERED　DOUBLE　HYDROXIDES　PILLARED　BY　HETEROPOLYOXOMETALATE

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Chemical Letters 1995年第8期6卷 719-722页

作者： Xu, Z He, hm Zhou, DM Wen, LS Jiang, D Wu, Y Jilin Univ Dept Chem Changchun 130023 Peoples R China Chinese Acad Sci Changchun Inst Appl Chem Changchun 130021 Peoples R China

Layered double hydroxides(LDHs)pillared with heteropolyoxometalate have been synthesized via both restructuring of hydrotalcite-like compounds and direct anion exchange under microwave *** and their derivatives are both found to be efficient for alkylation of isobutane with butene with a higher butene conversion and selectivity towards Cso

关键词：

Evaluation of diameter dis-tribution of inside cavities of open CNTs by analyses of nitrogen cryo-adsorption isotherm

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Science Bulletin 2001年第15期46卷 1317-1320页

作者： Yang, QH Li, F Hou, PX Liu, C Liu, M Cheng, hm Chinese Acad Sci Inst Met Res Shenyang 110015 Peoples R China

Precise evaluation of innerdiameter distribution of open carbon nanotubes (CNTs) is the basis of systematic investigation of physico-chemical processes occurring in nano-sized quasi-1-dimensional carbons. Due to the porosity characteristics and adsorption properties, this study evaluated the innerdiameter and its distribution of carbon nanotubes by analyses of nitrogen cryo-adsorption isotherms, and proved that the gas adsorption method is an effective method to characterize the inner cavity structure in comparison with that of electron microscopy observations and Raman measurements. The advantages of this method are as follows: Firstly, statistical information for innerdiameter distribution of open nanotubes can be obtained; Secondly, the method based on the adsorption process in inner cavities is of importance for investigation of other physico-chemical pro- cesses inside the cavities of carbon nanotubes. And finally, if combining with other characterization methods, complete structural information

关键词： carbon nanotubes (CNTs) innerdiameter distribution gas adsorption method adsorption isotherm.

Cyclooxygenase-2 polymorphisms and the risk of esophageal adeno-or squamous cell carcinoma

在线全文

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 2009年第28期15卷 3493-3497页

作者： Jón O Kristinsson Paul van Westerveld Rene hm te Morsche Hennie MJ Roelofs T Wobbes Ben JM Witteman Adriaan CITL Tan Martijn GH van Oijen Jan BMJ Jansen Wilbert hm Peters Department of Gastroenterolog Radboud University Nijmegen Medical Center PO Box 9106500 HB Nijmegen The Netherlands Department of Surgery Radboud UniversityNijmegen Medical Center PO Box 9101 6500 HB NijmegenThe Netherlands Department of Gastroenterology Hospital Gelderse Vallei PO Box 9025 6710 HN Ede The Netherlands Department of Gastroenterology Canisius Wilhelmina Hospital Weg door Jonkerbos 100 6532 SZ Nijmegen The Netherlands

AIM： TO determine whether -1195 A→G and/or -765 G→C polymorphisms in Cyclooxygenase-2 CCOX-2） may have a risk modifying effect on the development of esophageal carcinoma in a Dutch Caucasian population. METHODS： Two study groups were recruited, 252 patients with esophageal carcinoma and 240 healthy controls, matched for race, age, gender and recruiting area. DNA was isolated from whole blood and used for genotyping. PCR products were digested with restriction enzymes and products were analyzed by agarose gel electrophoresis. Odds ratios （OR） and 95% confidence intervals （CI） were estimated. RESULTS： The distribution of the -1195A→G polymorphism was significantly different in esophageal cancer patients compared to controls. The -1195 GG genotype resulted in a higher risk of developing esophageal adenocarcinoma （OR = 3.85, 95% CI： 1.45-10.3） compared with the -1195AA genotype as a reference. The -765 G→C genotype distribution was not different between the two groups. The GG/ GG haplotype was present more often in esophageal adenocarcinoma patients than in controls （OR = 3.45, 95% CI： 1.24-9.58; with AG/AG as a reference）. The same trends were observed in patients with squamous cell carcinomas, however, the results did not reach statistical significance. CONCLUSION： Presence of the COX-2 -1195 GG genotype and of the GG/GG haplotype may result in a higher risk of developing esophageal carcinoma.

关键词： Adenocarcinoma Cyclooxygenase-2 Esophagus Genetic polymorphism Squamous cellcarcinoma