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Characteristics of carbonate gas pool and multistage gas pool formation history of Hetianhe gas field, Tarim Basin, Northwest China
Science China Press., Co. Ltd. - Tập 47 - Trang 146-152 - 2002
Xinyuan Zhou, Chengzao Jia, Zhaoming Wang, Qinghua Wang, Wei Yang
Hetianhe is a big carbonate gas field which is found and demonstrated in the period of “Chinese National Ninth 5-Year Plan”. The proved reserve of Hetianhe gas field is over 600×108 m3. Its main producing layers are Carboniferous bioclastic limestone and Ordovician carbonate composed of buried hill. The former is stratified gas pool with water around its side, and the latter is massive gas pool wi...... hiện toàn bộ
Effects of coagulation on submerged ultrafiltration membrane fouling caused by particles and natural organic matter (NOM)
Science China Press., Co. Ltd. - Tập 56 - Trang 584-590 - 2011
YongHong Li, Jun Wang, Wei Zhang, XiaoJian Zhang, Chao Chen
Natural organic matter (NOM) and particles in source water are responsible for the majority of ultrafiltration (UF) membrane fouling that occurs during drinking water treatment. This study was conducted to (1) understand the UF membrane fouling phenomena caused by NOM and turbidity-causing particles and (2) investigate the effect of coagulation pretreatment on the alleviation of membrane fouling. ...... hiện toàn bộ
High resolution stalagmite δ18O records over the past 1000 years from Dongge Cave in Guizhou
Science China Press., Co. Ltd. - - 2005
He Yaoqi, Wang Yongjin, Kong Xinggong, Cheng Hai
Based on MC-ICP-MS U-series dating and stable O-isotope analysis results, a 4–5 years resolution monsoon record over the past 1000 years has been established for two stalagmites from Dongge Cave, Guizhou. The high resolution oxygen isotope record serves as a proxy for variations in rainfall of Asian southwest monsoon over the Yunnan-Guizhou Plateau. A close relation of the δ18O record with the Δ14...... hiện toàn bộ
Rapid assessment of acid phosphatase activity in the mycorrhizosphere and in arbuscular mycorrhizal fungal hyphae
Science China Press., Co. Ltd. - - 2000
Yong-Chun Song, Xin Li, Gu Feng, Fusuo Zhang, Peter Christie
Indoor environmental quality and the prevalence of childhood asthma and rhinitis in Wuhan area of China
Science China Press., Co. Ltd. - Tập 58 - Trang 4223-4229 - 2013
Ming Zhang, ESheng Zhou, Xin Ye, YueXia Sun, Jan Sundell, Xu Yang
Indoor environmental quality is suspected to be at least part of the cause of the increasing prevalence of childhood asthma and allergy. This study is part of the China, Children, Homes, Health (CCHH) project, which was designed to identify the risk factors indoors that are associated with prevalence of asthma and allergy among children in China. A cross-sectional questionnaire study was carried o...... hiện toàn bộ
Ortho-hydroxy assisted and copper-catalyzed oxidation of benzylic alcohol
Science China Press., Co. Ltd. - Tập 55 - Trang 2817-2819 - 2010
ChangFeng Wan, JinMin Fan, JinTang Zhang, ZhiYong Wang
An efficient and simple protocol for the synthesis of o-hydroxyarylketones has been developed. The reaction proceeds smoothly with catalytic amounts of copper catalyst under air atmosphere without ligands. This study indicates that the o-hydroxy plays an important role in the oxidation of alcohol to the corresponding carbonyl compounds.
Construction of transposon-mediated baculovirus vector and expression of green fluorescent protein in insect cells and larvae
Science China Press., Co. Ltd. - Tập 44 - Trang 158-163 - 1999
Ying Zhu, Yipeng Qi
A transposon-shuttle vector Hanpvid was constructed by using wild-type genomic DNA fromHeliothis armigera nuclear polyhedrosis virus (HaNPV). It could replicate inE. coli cells as a large plasmid and remain infectious when being induced into insect cells. Hanpvid comprises HaNPV DNA and a transposon cassette which includes a miniF replicon, a kanamycin resistance gene (kan), lacZa and an attachmen...... hiện toàn bộ
Role of Ppt1 in multiple stress responses in Candida albicans
Science China Press., Co. Ltd. - Tập 59 - Trang 4060-4068 - 2014
Kangdi Hu, Wanjie Li, Jiaxin Gao, Qizheng Liu, Haitao Wang, Yue Wang, Jianli Sang
To study the function of CaPpt1, we deleted PPT1 gene from the Candida albicans genome by sequentially replacing the entire coding region with the selectable markers ARG4 and HIS1. The results showed that the deletion of Ppt1 did not affect the hyphal formation of C. albicans under serum induction and caused enhanced sensitivity to DNA damage, Calcofluor white and salt-induced stress. We also foun...... hiện toàn bộ
Synthesis and properties of water-soluble oligo-(p-phenylkene vinylene)
Science China Press., Co. Ltd. - Tập 48 - Trang 2168-2170 - 2003
Jun Tang, Xiaoqiang Yu, Weiran Lin, Jingzhi Sun, Bai Yang
A water-soluble oligo(p-phenylkene vinylene) [4,4′-(1,4-phenylene dithenylene)-bis-(N-methyl pyridinium iodide)] was synthesized by Witting reaction. The oligomer was characterized by NMR, elemental analysis, UV-visible spectrum, surface photovoltage spectrum and fluorescence spectrum.
Anomalous activity of East Asian winter monsoon and the tropical Pacific SSTA
Science China Press., Co. Ltd. - - 1999
Cholaw Bueh, Liren Ji
The relationship between the anomalous East Asian winter monsoon (EAWM) activity and the tropical Pacific SST anomalies has been identified using the results of 40-year integration of the IAP CGCM1 model and 10-year observational data. In the strong EAWM year, the western and central Pacific are dominated by positive SST anomalies while the eastern Pacific is negative ones. In the weak EAWM year, ...... hiện toàn bộ
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