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兰州大学 [2]
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Optimization of solid-phase-extraction cleanup and validation of quantitative determination of eugenol in fish samples by gas chromatography-tandem mass spectrometry
期刊论文
ANALYTICAL AND BIOANALYTICAL CHEMISTRY, 2015, 卷号: 407, 期号: 21, 页码: 6563-6568
作者:
Li, Jincheng[1]
;
Zhang, Jing[2]
;
Liu, Yang[3]
收藏
  |  
浏览/下载:9/0
  |  
提交时间:2020/01/02
Gas chromatography-tandem mass spectrometbry
Eugenol
Fish samples
Exposure study
Food safety knowledge and decision-making process among college students in Lanzhou, Western China
期刊论文
Advance Journal of Food Science and Technology, 2015, 卷号: 9, 期号: 10, 页码: 816-820
作者:
Tao, Guo
;
Dan, Su
;
Bing-Yun, Zhang
;
Ya, Wang
收藏
  |  
浏览/下载:35/0
  |  
提交时间:2020/11/14
Decision making
Education
Safety engineering
Students
Surveys
College students
Decision making process
Female college students
Lanzhou cities
Questionnaire
Questionnaire surveys
Study samples
Western China
AN NICKEL WORKERS COHORT STUDY IN CHINA (JINCHUAN COHORT)-THE LARGEST NICKEL POPULATION IN WORLD
会议论文
作者:
Bai, YN
;
Yang, AM
;
Pu, HQ
;
He, J
;
Zheng, TZ
收藏
  |  
浏览/下载:4/0
  |  
提交时间:2017/01/20
Nickel
Cohort Study
Epidemiologic survey
Blood samples
Empirical analysis of motives of private placement of listed companies
会议论文
作者:
Zhang, Dan
;
Song, Lin
;
Li, Yuan
;
Zhao, Jindong
收藏
  |  
浏览/下载:2/0
  |  
提交时间:2019/12/03
Empirical analysis
Historical performance
Multivariate logistic regressions
Private placements
Small scale
Study samples
A robust and efficient statistical method for genetic association studies using case and control samples from multiple cohorts
期刊论文
BMC GENOMICS, 2013, 卷号: 14
作者:
Wang, Minghui
;
Wang, Lin
;
Jiang, Ning
;
Jia, Tianye
;
Luo, Zewei
收藏
  |  
浏览/下载:2/0
  |  
提交时间:2019/12/19
Case and control samples
Genome-wide association study
Linkage disequilibrium
Multiple cohorts
Parkinson's disease
Robust statistical approach
AN NICKEL WORKERS COHORT STUDY IN CHINA (JINCHUAN COHORT)-THE LARGEST NICKEL POPULATION IN WORLD
期刊论文
2013, 卷号: 8, 页码: S696-S696
作者:
Bai, Yana
;
Yang, Aimin
;
Pu, Hong Q.
;
He, Jie
;
Zheng, Tongzhang
收藏
  |  
浏览/下载:2/0
  |  
提交时间:2020/01/13
Nickel
Cohort Study
Epidemiologic survey
Blood samples
Spatial variation characteristics and environmental significance in different water bodies, Lijiang, China
会议论文
2011 International Symposium on Water Resource and Environmental Protection, ISWREP 2011, Xi'an, China, May 20, 2011 - May 22, 2011
作者:
Zhu, Guofeng
;
He, Yuanqing
;
Pu, Tao
收藏
  |  
浏览/下载:2/0
  |  
提交时间:2017/01/18
Water resources
Concentration (process)
Environmental protection
Groundwater
Ion sources
Ions
Lithology
Sustainable development
Correlation analysis
edge ion
Environmental significance
Glacier melting
High altitude
High concentration
Intrinsic mechanisms
Lake waters
Lijiang
Low altitudes
Low level
Melt water
Soluble ions
Spatial variations
Study areas
Water samples
Waterbodies
Yunnan province
Identification of a chitin deacetylase producing bacteria isolated from soil and its fermentation optimization
期刊论文
AFRICAN JOURNAL OF MICROBIOLOGY RESEARCH, 2010, 卷号: 4, 期号: 23, 页码: 2597-2603
作者:
Zhou, Guoying*
;
Zhang, Huaiyun
;
He, Yuanhao
;
He, Li
收藏
  |  
浏览/下载:2/0
  |  
提交时间:2019/12/28
Chitin deacetylase (CDA) catalyzes the conversion of chitin to chitosan by the deacetylation of N-acetyl-D-glucosamine residues. In this study
9 strains of bacteria with chitin deacetylase activity were isolated from canal mud samples from theXiangjiang River in Changsha
Hunan Province. Of these 9 strains
the Z7 strain had the highest chitin deacetylase activity
as determined by enzyme assay screening. Based on its culture
morphological
physiological characteristics and molecular identification
strain Z7 was identified as Bacillus amyloliquefaciens. Yeast extract at a concentration of 1.0% was an ideal nitrogen source for production of CDA (16.78 Eu/ml). Starch at 2% functioned best as the major carbon source for optimum production of CDA (17.84 Eu/ml). Magnesium sulfate at a concentration of 0.04% was an ideal inorganic salt for CDA production (17.45 Eu/ml). Ideal pH and temperature for optimum production of CDA by this strain were pH 6 and 37˚C.
Analysis of the disturbance of remote aerial detector induced by laser (EI CONFERENCE)
会议论文
High-Power Lasers and Applications III, November 8, 2004 - November 11, 2004, Beijing, China
Zhou J.
;
Guo J.
;
Fu Y.
收藏
  |  
浏览/下载:35/0
  |  
提交时间:2013/03/25
It is important to study the interaction effect between laser and photoelectric detector. In most of the laser detecting systems
laser must irradiate the photoelectric detector. The detector will be saturated or damaged easily if the fluence of the laser is higher than the saturation threshold of the detector. Now
many photoelectric detectors are used in space. To achieve their interaction
"Cat's eye" effect is applied to find and locate the remote aerial detector by laser. The possibility and mechanism of disturbance to remote aerial detector induced by laser are analyzed
and the factors of influence are also analyzed. The fluence of laser on the photoactive area of remote aerial detector is estimated. With two samples of CCD and TV tracking system
the mechanism of soft damage to CCD and TV tracking system induced by laser are introduced. The saturation of CCD and crosstalk of CCD are the main reasons of disturbance. When the tracking system is used in wave-door tracking mode
it will lose its tracking target if the saturation or crosstalk of CCD can enter into wave-door. At last
the influence to disturbance induced by atmosphere effect is also analyzed.
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