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Phenanthroline-based Fluorescent Chemosensor for Selective Detection of Zn^(2+) in DMF Buffer Solution

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Chemical Research in Chinese Universities 2010年第6期26卷 884-887页

作者： WANG Xlu-li zheng wen-yan liN Hong-yan liU Guo-cheng Faculty of Chemistry and Chemical Engineering Key Laboratory of Applied Chemistry of Liaoning Province Bohai University Jinzhou 121000 P. R. China

A simple ＂off-on＂ fluorescent chemosensor with high selectivity to zinc ions based on 1,10-phenanthro-line receptor dipyrido[3,2-d：2＇,3＇-f]quinoxaline（L） was *** selectivity response of receptor L to zinc ion was demonstrated by UV-Vis absorption and fluorescence spectroscopies in DMF buffer *** experiment results show that the fluorescent chemosensor L exhibits the optimum response behavior to Zn2＋ in the range of pH 8.0―9.0 and shows excellent selectivity to Zn2＋ over other cations tested.

关键词： Fluorescence Chemosensor Phenanthroline-based Cation detection selectivity

Characterization and Expression Analysis of Four Glycine-Rich RNA-Binding Proteins Involved in Osmotic Response in Tobacco (Nicotiana tabacum cv. Xanthi)

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Agricultural Sciences in China 2010年第11期9卷 1577-1587页

作者： CHEN Xuan ZENG Qian-chun LU Xiu-ping YU Di-qiu li wen-zheng Industrial Crop Research Institute Yunnan Academy of Agricultural Sciences Kunming 650205 P.R. China College of Agronomy and Biotechnology Yunnan Agricultural University Kunming 650201 P.R. China Yunnan Tobacco Research Institute Yuxi 653100 P.R.China Xishuangbanna Tropical Botanic Garden Chinese Academy of Sciences Kunming 650223 P.R. China

Plants have developed many signals and specific genes＇ regulations at both transcriptional and post-transcriptional levels in order to tolerate and adapt to various environmental stresses. RNA-binding proteins （RBPs） play crucial roles in the post- transcriptional regulation via mRNA splicing, polyadenylation, sequence editing, transport, mRNA stability, mRNA localization, and translation. In this paper, four cDNAs of glycine-rich RNA-binding proteins （GR-RBPs）, named NtRGP-la, -lb, -2, and -3, were isolated from Nicotiana tabacum by RT-PCR analysis, and special emphases were given to the sequences alignment, phylogenetic analysis and gene expression. Sequences alignment revealed minor difference of cDNA sequences, but no difference of deduced proteins between N. sylvestris and N. tabacum. Phylogenetic alignment revealed that four cDNAs in tobacco were clustered into two different groups. NtRGP-2 and -3 were evolutionarily closest to Arabidopsis GR-RBPs genes and related to animal GR-RBPs genes, while NtRGP-la and -lb were closest to Gramineae GR-RBPs genes. The expression analyses of these four NtRGPs in response to different abiotic stresses revealed the similar expression pattern. Moreover, the four NtRGPs, especially NtRGP-la and NtRGP-3, were strongly induced by stresses including water, wound, cold, and high temperature, weakly induced by PEG, drought and SA, while reduced by NaC1 and unaffected by ABA treatment. The fact that all of these abiotic stresses included in our experiments affected the water balance and resulted in osmotic stress on cellular level, suggests that NtRGPs in tobacco should be a family of crucial osmosis-related proteins, and may play a key role in signal transduction with ABA-independent pathway under abiotic stresses.

关键词： glycine-rich RNA-binding proteins abiotic stresses phylogenesis expression pattern osmotic stress

Storage and redistribution of anthropogenic CO_(2) in the western North Pacific:The role of subtropical mode water transportation

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Fundamental Research 2024年第1期4卷 103-112页

作者： Cheng-long li Lei Han Wei-dong Zhai Di Qi Xu-chen Wang Hong-mei lin li-wen zheng Institute of Marine Science and Technology Shandong UniversityQingdao 266237China China-ASEAN College of Marine Science and Technology Xiamen University MalaysiaSelangorMalaysia Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai) Zhuhai 519080China Polar and Marine Research Institute Jimei UniversityXiamen 361021China Key Laboratory of Marine Chemistry Theory and Technology and Frontiers Science Center for Deep Ocean Multispheres and Earth SystemMinistry of EducationOcean University of ChinaQingdao 266100China Center for Isotope Geochemistry and Geochronology Pilot National Laboratory for Marine Science and Technology(Qingdao)Qingdao 266237China Weihai Institute of Marine Ecology and Economy Research Weihai 264400China

Oceanic uptake and storage of anthropogenic CO_(2)(CANT)are regulated by ocean circulation and *** decipher the storage and redistribution of CANT in the western North Pacific,where a major CANT sink develops,we investigated the water column carbonate system,dissolved inorganic radiocarbon and ancillary parameters in May and August 2018,spanning the Kuroshio Extension(KE,35-39°N),Kuroshio Recirculation(KR,27-35°N)and subtropical(21-27°N)*** column CANT inventories were estimated to be 40.5±1.1 mol m^(-2) in the KR zone and 37.2±0.9 mol m^(-2) in the subtropical *** comparison with historical data obtained in 2005,relatively high rates of increase of the CANT inventory of 1.05±0.20 and 1.03±0.12 mol m^(-2) yr^(-1) in the recent decade were obtained in the KR and subtropical zones,*** water-mass-based analyses suggest that formation and transport of subtropical mode water dominate the deep penetration,storage,and redistribution of CANT in those two *** the KE zone,however,both the water column CANT inventory and the decadal CANT accumulation rate were small and uncertain owing to the dynamic hydrology,where the naturally uplifting isopycnal surfaces make CANT penetration relatively *** findings of this study improve the understanding of the spatiotemporal variations of CANT distribution,storage,and transport in the western North Pacific.

关键词： Oceanic CO_(2)uptake Anthropogenic CO_(2)storage Subtropical mode water Kuroshio extension Kuroshio recirculation Western North Pacific

Reliability and Incentive of Performance Assessment for Decentralized Clouds

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Journal of Computer Science & Technology 2022年第5期37卷 1176-1199页

作者： Jiu-Chen Shi Xiao-Qing Cai wen-li zheng Quan Chen De-Ze Zeng Tatsuhiro Tsuchiya Min-Yi Guo Department of Computer Science and Engineering Shanghai Jiao Tong UniversityShanghai 200240China School of Computer Science China University of GeosciencesWuhan 430074China Graduate School of Information Science and Technology Osaka UniversityOsaka 565-0871Japan

Decentralized cloud platforms have emerged as a promising paradigm to exploit the idle computing resources across the Internet to catch up with the ever-increasing cloud computing *** any user or enterprise can be the cloud provider in the decentralized cloud,the performance assessment of the heterogeneous computing resources is of vital ***,with the consideration of the untrustworthiness of the participants and the lack of unified performance assessment metric,the performance monitoring reliability and the incentive for cloud providers to offer real and stable performance together constitute the computational performance assessment problem in the decentralized *** this paper,we present a robust performance assessment solution RODE to solve this *** mainly consists of a performance monitoring mechanism and an assessment of the claimed performance(AoCP)*** performance monitoring mechanism first generates reliable and verifiable performance monitoring results for the workloads executed by untrusted cloud *** on the performance monitoring results,the AoCP mechanism forms a unified performance assessment metric to incentivize cloud providers to offer performance as *** extensive experiments,we show RODE can accurately monitor the performance of cloud providers on the premise of reliability,and incentivize cloud providers to honestly present the performance information and maintain the performance stability.

关键词： decentralized cloud computing robust performance assessment trusted execution environment(TEE)

Thrombus aspiration plus intra-infarct-related artery administration of tirofiban improves myocardial perfusion during primary angioplasty for acute myocardial infarction

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Chinese Medical Journal 2010年第7期123卷 877-883页

作者： YAN Hong-bing li Shi-ying SONG li WANG Jian WU zheng CHI Yun-peng zheng Bin ZHAO Han-jun li Qing-xiang ZHANG Xiao-jiang li wen-zheng 8th Division Beijing Anzhen Hospital Capital Medical University Beijing 100029 China

Background We developed a new combined strategy of thrombus aspiration plus intra-infarct-related artery （IRA） bolus administration of tirofiban via the aspiration catheter in patients with ST-segment elevation myocardial infarction （STEMI）. This strategy can reduce the distal embolism and achieve highly localized concentrations of tirofiban, which can improve myocardial reperfusion without increasing the risk of bleeding. The aim of this study was to investigate whether this combined strategy is superior to thrombus aspiration alone in improving myocardial perfusion in patients with STEMI undergoing primary *** Baseline characteristics of the two groups were well-balanced. The TIMI 3 flow showed a better tendency in the intra-IRA group than in the aspiration alone group （97.22% vs. 87.04%, X2=7.863, P=0.049）. The peak of CK-MB （83.9 （68.9-310.5） U/L vs. 126.1 （74.7-356.7） U/L, P=0.034） and Tnl （42.7 （14.7-113.9） ng/ml vs. 72.5 （59.8-135.3） ng/ml, FMD.029） were lower in the intra-IRA group than in the aspiration alone group. LVEF in the hospital favored the intra-IRA group, （45.7±8.3）% to （42.9±12.1）%, t=1.98, P=0.049. There was a tendency towards a lower MACE at 9-month follow-up in the intra-IRA group although it did not reach statistical difference （Log-rank X2=2.865, P=0.09）. There was no statistical difference in any bleeding events between the two *** Thrombus aspiration plus intra-IRA bolus administration of tirofiban combined with angioplasty may be related with improved myocardium perfusion, saved more myocardium, and resulted in a better clinical prognosis.

关键词： myocardial infarction tirofiban primary angioplasty thrombus aspiration myocardial perfusion

Comparison of safety and efficacy between fondaparinux and nadroparin in non-ST elevation acute coronary syndromes

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Chinese Medical Journal 2011年第6期124卷 879-886页

作者： YAN Hong-bing SONG li liU Ran ZHAO Han-jun WANG Shao-pin CHI Yun-peng zheng Bin li wen-zheng liU Chen ZHOU Peng Cardiovascular Institute and Fuwai Hospital Peking Union Medical College and Chinese Academy of Medical SciencesBeijing 100037 China Beijing Anzhen Hospital Capital Medical University Beijing 100029 China

Background American College of Cardiology/American Heart Association/European Society of Cardiology （ACC/AHA/ESC） guidelines gave fondaparinux a class Ⅰ recommendation for use in patients with non-ST elevation acute coronary syndromes （NSTE-ACS） undergoing invasive or conservative strategy. Nadroparin is one of the common anticoagulants used in NSTE-ACS in China. Accordingly, this study compared the safety and efficacy between fondaparinux and nadroparin in patients with *** In this prospective, randomized, open-label, and single center study, a total of 300 patients with NSTE-ACS were randomized to receive either fondaparinux （group F, n=150, 2.5 mg/d） or nadroparin （group N, n=150, 0.1 ml/10 kgq12 h） for a mean of 4 days. The primary safety endpoint was the incidence of major or minor bleeding at 9 days that was not related to coronary artery bypass grafting （CABG）. The primary efficacy endpoints included death, myocardial infarction, or recurrent ischemia at 9 days. All patients underwent a 180-day *** Baseline characteristics were well matched between the two groups. There was a non-significant 28% relative risk reduction in the primary safety endpoint in group F compared with group N （4.7% vs. 6.7%, HR 0.72, 95% CI0.42-1.65, P=0.38）. The primary efficacy endpoint was 8.0% in group F and 10.0% in group N （HR, 0.82, 95% CI0.54-1.71, P=0.49）. The composite of the safety and efficacy endpoints at 9 days （10.0% vs. 16.0%, HR 0.61, 95% CI0.31-1.10,P=0.10）, 30 days （14.0% vs. 17.9%, HR 0.72, 95% C/0.47-1.16, P=0.21）, or 180 days （18.7% vs. 27.3%, HR0.65, 95% CI0.38-1.11, P=0.11） showed a non-significant trend toward a lower value in group *** Fondaparinux resulted in a nonsignificant risk reduction in patients with NSTE-ACS in both bleeding and ischaemic events during short- and long-term follow-up compared with nadroparin.

关键词： anticoagulants fondaparinux nadroparin acute coronary syndromes

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火山岩体地震特征识别技术与应用研究

矿物岩石 2008年第3期28卷 105-110页

作者：李勇宋宗平李琼李正文成都理工大学信息工程学院四川成都610059 大庆油田有限责任公司勘探分公司黑龙江大庆163000

利用地震反射特征和反演所得的特征参数等相结合的地震特征识别技术在无井或少井的火山岩地区可以直接识别火山岩体的位置及范围。将此识别技术对某油田的营城组火山岩体进行识别与评价中,圈出4个最佳有利火山岩体,并利用密度技术对新... 详细信息

利用地震反射特征和反演所得的特征参数等相结合的地震特征识别技术在无井或少井的火山岩地区可以直接识别火山岩体的位置及范围。将此识别技术对某油田的营城组火山岩体进行识别与评价中,圈出4个最佳有利火山岩体,并利用密度技术对新圈出的最佳有利火山岩体进行油气检测,密度小于或等于2.53 g/cm3的火山岩体部位为天然气富集部位或富集空间,钻井后证实有很好的地质效果和较高的勘探开发成功率,为复杂的火山岩体的识别与预测提供了新的技术支持。在营城组火山岩体的识别与评价中发现火山岩储层在空间中存在复杂多变性,表现出较强的非均质性和特征差异性,其储层存在分割现象,但是,在好的岩性和构造背景下仍可形成局部天然气的富集。

关键词：火山岩地震反射特征速度剖面密度剖面识别

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交通建设对促进陕南旅游业发展的实证研究

西北大学学报（自然科学版） 2012年第1期42卷 109-114页

作者：李文正咸阳师范学院旅游与资源环境学院陕西咸阳712000

目的从定性和定量两方面深刻揭示陕南交通建设对旅游业发展产生的促进效应及内在机制,为陕南交通建设与旅游开发协调发展提供建议。方法利用大量文献资料结合实地调研,对陕南交通建设与旅游发展进行相关分析和回归分析。结果发现陕南旅... 详细信息

目的从定性和定量两方面深刻揭示陕南交通建设对旅游业发展产生的促进效应及内在机制,为陕南交通建设与旅游开发协调发展提供建议。方法利用大量文献资料结合实地调研,对陕南交通建设与旅游发展进行相关分析和回归分析。结果发现陕南旅游业发展与交通建设高度相关,并分别建立了陕南各个旅游指标与"综合旅游交通里程指数"之间的函数模型。结论交通建设对陕南旅游业发展的贡献呈现越来越强的态势,未来陕南交通建设与旅游开发需要协调发展。

关键词：交通建设旅游业发展陕南

陕南旅游交通网可达性测算及其空间格局评价研究

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西北大学学报（自然科学版） 2013年第4期43卷 637-642页

作者：李文正咸阳师范学院旅游与资源环境学院陕西咸阳712000

研究陕南旅游交通网的可达性及其与旅游资源和客源市场之间在空间上的协调性，为提升陕南旅游交通网可达性水平提供对策。从区内可达性、区外可达性和区域可达性3个方面建立陕南旅游交通网可达性测算模型。研究发现，总体上看可达性水... 详细信息

研究陕南旅游交通网的可达性及其与旅游资源和客源市场之间在空间上的协调性，为提升陕南旅游交通网可达性水平提供对策。从区内可达性、区外可达性和区域可达性3个方面建立陕南旅游交通网可达性测算模型。研究发现，总体上看可达性水平呈现出从陕南几何中心向外围逐渐降低的特点，同时，可达性水平高低与高速公路和铁路分布关系紧密。大部分城市可达性时间在3—4h之间，处在周末旅游圈之内；少数城市可达性时间在4～8h之间，处在长途旅游圈之内。不少城市的可达性水平与县（区）内的旅游资源或客源市场特点不相适应。对陕南旅游交通网今后需要从几何结构方面进行完善和优化，从类型结构和等级结构方面进行改造和提升。

关键词：陕南旅游交通网可达性空间格局