|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Antibiotic Resistance of Probiotic Strains of Lactic Acid Bacteria Isolated from Marketed Foods and Drugs显示文摘Objective To identify the antimicrobial resistance of commercial lactic acid bacteria present in microbial foods and drug additives by analyzing their isolated strains used for fermentation and probiotics. Methods Antimicrobial susceptibility of 41 screened isolates was tested with disc diffusion and E-test methods after species-level identification. Resistant strains were selected and examined for the presence of resistance genes by PCR. Results Distribution of resistance was found in different species. All isolates were susceptible to chloramphenicol, tetracycline, ampicillin, amoxicillin/clavulanic acid, cephalothin, and imipenem. In addition, isolates resistant to vancomycin, rifampicin, streptomycin, bacitracin, and erythromycin were detected, although the incidence of resistance to these antibiotics was relatively low. In contrast, most strains were resistant to ciprofloxacin, amikacin, trimethoprim/sulphamethoxazole, and gentamycin. The genes msrC, vanX, and dfrA were detected in strains of Enterococcus faecium, Lactobacillus plantarum, Streptococcus thermophilus, and Lactococcus lactis. Conclusion Antibiotic resistance is present in different species of probiotic strains, which poses a threat to food safety. Evaluation of the safety of lactic acid bacteria for human consumption should be guided by established criteria, guidelines and regulations. | CHANG LIU, ZHUO-YANG ZHANG, KE DONG, JIAN-PING YUAN, AND XIAO-KUI GUO P1 P Department of Medical Microbiology and Parasitology, Institutes of Medical Sciences, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China | 2009 | Biomedical and Environmental Sciences2009，22，5： | 19 |
| 2 | INTERFACIAL STRUCTURE AND PHASE REACTION IN SiC/NiCr ALLOY JOINT显示文摘Bonding of SiC to SiC using Ni and Ni - 25at%Cr foils was performed at high temperature.Interface structures and reaction phases were investigated by EPMA analyses and XRD diffraction method, re- spectively. At a bonding temperature of 1273K Ni reacts with SiC and forms various Ni silicides con- taining graphite baside SiC. Ni3Si without graphite was formed at Ni side.The interface structure of SiC/Ni joint was SiC/Ni2Si + C/Ni31 Si12 + G/Ni3 Si/Ni. At the interface between SiC and Ni- 25at%Cr alloy the Ni silicide was only Ni2Si at the same bonding temperature,and further(Cr, Ni)7 (Si, C)3 carbide was formed between Ni silicide + graphite zone and Ni - 25at%Cr alloy.The interface structure of SiC/Ni - 25at%Cr alloy was SiC/Ni2Si + C/(Cr, Ni)7 (Si, C)3+Ni(ss. Cr, Si)/Ni - 25at%Cr. | J. C. Feng M. Naka J. C. Schuster(School of Materials Science and Engineering, Harbin Institute of Technology, Harbin, 150001, China Joining and Welding Research Institute, Osaka University, Mihogaoka 11 - 1, Ibaraki, Osaka 567, Japan Institute of P | 2000 | Acta Metallurgica Sinica(English Letters)2000，13，1： | 6 |
| 3 | The Machine Recognition for Population Feature of Wheat Images Based on BP Neural Network显示文摘Recognition and analysis of dynamic information about population images during wheat growth periods can be taken for the base of quantitative diagnosis for wheat growth. A recognition system based on self-learning BP neural network for feature data of wheat population images, such as total green areas and leaves areas was designed in this paper. In addition, some techniques to create favorable conditions for image recognition was discussed, which were as follows: (1) The method of collecting images by a digital camera and assistant equipment under natural conditions in fields. (2) An algorithm of pixei labeling was used to segment image and extract feature. (3)A high pass filter based on Laplacian was used to strengthen image information. The results showed that the ANN system was availability for image recognition of wheat population feature. | LI Shao-kun, SUO Xing-mei, BAI Zhong-ying, QI Zhi-li, Liu Xiao-hong, GAO Shi-ju and ZHAO Shuang-ning( Institute of Crop Breeding and Cultivation /Key Laboratory of Crop Genetic & Breeding, Ministry of Agriculture, ChineseAcademy of Agricultural Sciences, Beijing 100081 , P . R . China Department of Computer Science and Technology, CentralUniversity for Nationalities, Beijing 100081 , P. R . China School of Computer Science and Technology, Beijing Universityof Posts and Telecommunications, Beijing 100876, P. R . China Research Center of Xinjiang Crop High-yield,Shihezi University, Shihezi 832003, P.R. China) | 2002 | Agricultural Sciences in China2002，1，8： | 4 |
| 4 | Application of Petri Net to Fault Diagnosis in Satellite显示文摘A prototype of fault diagnosis based on Petri net, which is developed for a satellite tele-control subsystem, is introduced in this paper. Its structure is first given with the emphasis on a Petri net modeling tool which is designed using the object oriented method. The prototype is connected to the database with DAO (Date Access Object) technique, and makes the Petri net’s firing mechanism and its analyzing methods to be packed up as DLL (Dynamic Link Library) documents. Compared with the rule-based expert system method, the Petri ned-based one can store the knowledge in mathematical matrix and make inference more quickly and effectively. | Ding Caihong School of Mechanics, DongHua University, Shanghai 200051, P R. China | 2001 | Journal of Systems Engineering and Electronics2001，12，2： | 3 |
| 5 | Quality control measures for lowering the seroconversion rate of hemodialysis patients with hepatitis B or C virus显示文摘BACKGROUND: Hemodialysis (HD) patients are at high risk of infection by hepatitis B virus (HBV) or hepatitis C virus (HCV). The present study was designed to determine the impact of quality control measures on the prevention of transmission of blood-borne viruses. METHODS: A total of 6182 adult maintenance HD patients from all HD units in Zhejiang Province were recruited on January 1, 2007. The baseline demographic and clinical characteristics were recorded and all patients were followed up until death or survival at 4 years later. The Quality Control Standards of Hemodialysis were gradually implemented in HD units. The HBV or HCV seroconversion rates of the recruited patients were calculated and compared every year during the observation period. RESULTS: The prevalence of HBV was 8.3% at the beginning of the study, and 6.6% for HCV. With the implementation of the HD quality control measures, the HBV seroconversion rate tended to decrease year by year (χ 2 =6.620, P=0.085), and the HCV seroconversion rate decreased significantly (χ 2 =10.41, P=0.015). Compared with the data in 2007, the HBV seroconversion rate (χ 2 =4.204, P=0.040, relative risk ratio 0.393, 95% CI 0.156-0.991) and the HCV seroconversion rate (χ 2 =7.373, P=0.007, relative risk ratio 0.386, 95% CI 0.189-0.787) decreased significantly in 2010. CONCLUSION: Quality control measures for HD decreased the seroconversion rates of HBV or HCV in HD patients, showing that updated quality control measures reduce the risk for transmission of blood-borne viruses in the HD population. | Jing Yuan,Yi Yang, Fei Han, Ping Zhang, Xiao-Ying Du, Hua Jiang and Jiang-Hua Chen The Kidney Disease Center, First Affiliated Hospital, Zhejiang University School of Medicine (Yuan J, Yang Y, Han F, Zhang P, Du XY, Jiang H and Chen JH) and Hemodialysis Quality Control Center of Zhejiang Province (Yuan J, Zhang P, Du XY and Chen JH), Hangzhou 310003, China | 2012 | Hepatobiliary & Pancreatic Diseases International2012，11，3： | 2 |
| 6 | Resveratrel attenuates early pyramidal neuron excitability impairment and death in acute rat hippocampal slices caused by oxygen-glucose deprivation 显示文摘 | Zhang H Schools G P Lei T | 2008 | Exp Neurol2008，212，1： | 1 |
| 7 | Fal risk:the clinical relevance of fal s and how to integrate fal risk with fracture risk显示文摘 | Peeters G Van School N M Lips P | | 0，，06： | 1 |
| 8 | Cadmium inhibits epoxidation Of diatoxanthin to diadinoxanthin in the xanthophylls cycle of the marine diatom Phaeodactylum tricornutum 显示文摘 | Bertrand M Schools B Siffel P | 2001 | FEBS Lett2001，508，： | 1 |
| 9 | Probing the Solvent-Assisted Nucleation Pathway in Chemical Self-Assembly显示文摘 | Jonkheijm P School P Schenning A P H J | 2006 | Science2006，313，： | 1 |
| 10 | Autosomal domi nant cerebellar ataxias: clinical features, genetics, and pathogenesis显示文摘 | Schools L Bauer P Schmidit T | 2004 | Lancet Neurol2004，3，5： | 1 |
| 11 | Planetary formation in the γ Cephei system 显示文摘 | THEBAULT P MARZARI K SCHOOL H | 2004 | Astronomy and Astrophysics2004，427，： | 1 |
| 12 | Analysis of the energy balance in lung cancer patients显示文摘 | STAAL-VAN DEN BREKEL A J SCHOOLS A M TEN VELDE G P | 1994 | Cancer Res1994，54，24： | 1 |
| 13 | Molecular biomarkers for aflatoxins:from adduct biomarkers to human liver cancer显示文摘 | roopman J D Wang J S School P | 1996 | Con J Physical Phannacol1996，74，： | 1 |
| 14 | Evaluation of Starch Noodles Made from Three Typical Chinese Sweet-potato Starches显示文摘 | Chen Z Sagis L Legger A Linsseb J P H Schools H A Voragen A G J | 2002 | Journal of Food Science2002，67，9： | 1 |
| 15 | Work design and patient safety显示文摘 | Carayon P Alvarado C J Schools A H | 2007 | Theror Issues Ergonomics Sci2007，8，5： | 1 |
| 16 | Key MAC Layer Technologies of Cognitive Radio Network显示文摘As a smart spectrum sharing technology, Cognitive Radio (CR) is becoming a hot topic in the field of wireless telecommunications. Besides providing traditional services, the cognitive radio network Media Access Control (MAC) layer is required to perform an entirely new set of functions for effective reusing spectrum opportunity, without causing any harmful interference to incumbents. Spectrum sensing management selects and optimizes sensing strategies and parameters by the selection of sensing mode, sensing period, sensing time, sensing channel, and sensing quiet period. Access control avoids collision with primary users mainly by cooperation access and transparent access. Dynamic spectrum allocation optimizes the allocation of uncertain spectrum for binary interference model and accumulative interference model. Security mechanism adds authentication and encryption mechanisms to MAC frame to defense MAC layer security attacks. Cross-layer design combines MAC layer information with physical layer or higher layers information, such as network layer, transmission layer, to achieve global optimization. | Zeng Zhimin, Guo Caili (School of Information and Communication Engineering , Beijing University of Posts and Telecommunications , Beijing 100876 , P . R . China ) | 2009 | ZTE Communications2009，7，2： | 0 |
| 17 | A Solution of Field Data Acquisition and Instrument Rebuild显示文摘The problems of the present management information system are introduced A solutionbased on field-bus is proposed to overcome the problem. A issue how the old instruments isapplied to the new syslem is discussed and a rebuild method of the old instruments with LED orLCD to fit the solution is | Jiang Digang (School of Electron Machines, Xi’an Electron Science and Technology University Xi’an 710071, P R. China)Zheng Xiaoli(PLA Guangzhou communications institute,Guangzhou 510502, P R. China) | 2000 | International Journal of Plant Engineering and Management2000，5，2： | 0 |
| 18 | Blow-up for Doubly Degenerate Nonlinear Parabolic Equations | Ming Yu CHEN School of Science,Quanzhou Nomal University,Quanzhou,Fujian 362000,P,R.China | 2008 | Acta Mathematica Sinica,English Series2008，24，9： | 0 |
| 19 | Synthesis, Crystal Structure and Electrochemistry of Two Complexes (YLn)^(3+)[PW_(12)O_(40)]^(3-)(L=Me_2SO, Me_2NCHO)显示文摘The reaction of α-H3[PW12O40] with Y(NO3)3 in the presence of DMF or DMSO leads to two complexes with the formulae {Y(DMSO)7}·PW12O40(1) and {[Y(DMF)7]2PW12O40}·PW12O40(2). The crystal structures indicate that complex 1 consists of discrete [YLn]3+ cations and α-Keggin heteropolyanions [PW12O40]3-, whereas, in complex 2, donor-acceptor interaction results in a cation-anion-cation triplet. In addition, the electrochemical behavior of the two complexes indicates the usual successive reduction processes of the W atoms in the anions. | HAN Qiu-xia WANG Chun-zhang Institute of Molecular and Crystal Engineering, School of Chemistry and Chemical Engineering, Henan University, Kaifeng 475001, P R. China NIU Jing-yang WANG Jing-ping | 2008 | Chemical Research in Chinese Universities2008，24，3： | 0 |
| 20 | Inhibition of ATP-induced macrophage death by emodin via antagonizing P2X_7 receptor显示文摘Extracellular ATP has been widely recognized as an important signaling molecule that can induce a number of physiological and pathophysiological responses by interacting with | Lijun Liu1, Jie Zou1, Xing Liu2, Lin-Hua Jiang2 and Junying Li1 1 Department of Biophysics, School of Physics, Nankai University, Tianjin, 30071 P R China 2 Institute of Membrane and Systems Biology, Faculty of Biological Sciences, University of Leeds, Leeds, United Kingdom | 2009 | 生物物理学报2009，25，S1： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员