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Influence of climatic warming in the Southern and Northern Hemi-sphere on the tropical cyclone over the western North Pacific Ocean

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2006年第11期7卷 1923-1927页

作者： tian rong-xiang WENG Huan-xin Department of Earth Science Zhejiang University Hangzhou 310027 China

Based on analyzing the surface air temperature series in the Southern and Northern Hemisphere and the tropical cyclone (TC) over the western North Pacific Ocean, the relationships between climatic warming and the frequency and intensity of tropical cyclone are investigated. The results showed that with the climatic warming in both hemispheres, the frequency of the tropical cyclone over the western North Pacific Ocean reduces and its intensity weakens simultaneously. A possible explanation might be that the cold air invasion from the Southern Hemisphere weakens due to global warming.

关键词： Climatic warming Southern and Northern Hemisphere Western North Pacific Ocean Tropical cyclone (TC)

Putative zeatin O-glucosyltransferase OscZOG1 regulates root and shoot development and formation of agronomic traits in rice

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Journal of Integrative Plant Biology 2016年第7期58卷 627-641页

作者： Xiao-Ling Shang rong-rong Xie Hua tian,Qing-Long Wang and Fang-Qing Guo rong-rong Xie Hua tian Qing-Long Wang Fang-Qing Guo The National Key Laboratory of Plant Molecular Genetics and National Center of Plant Gene Research(shanghai) Institute of Plant Physiology&EcologyShanghai Institutes for Biological SciencesChinese Academy of SciencesShanghai 200032China.

As a ubiquitous reaction, glucosylation controls the bioactivity of cytokinins in plant growth and development. Here we show that genetic manipulation of zeatin-O- glucosylation regulates the formation of important agronomic traits in rice by manipulating the expression of OscZOG1 gene, encoding a putative zeatin O-glucosyltransferase. We found that OscZOG~ was preferentially expressed in shoot and root meristematic tissues and nascent organs. The growth of lateral roots was stimulated in the overexpression lines, but inhibited in RNA interference lines. In shoots, knockdown of OscZOG1 expression by RNA interference significantly im- proved tillering, panicle branching, grain number per panicle and seed size, which are important agronomic traits for grain yield. In contrast, constitutive expression of OscZOG1 leads to negative effects on the formation of the grain-yielding traits with a marked increase in the accumulation levels of cis-zeatin O-glucoside （cZOG） in the transgenic rice plants. In this study,our findings demonstrate the feasibility of improving the critical yield-determinant agronomic traits, including tiller number, panicle branches, total grain number per panicle and grain weight by downregulating the expression level of OscZOG1. Our results suggest that modulating the levels of cytokinin glucosylation can function as a fine-tuning switch in regulating the formation of agronomic traits in rice.

关键词： Cis-zeatin O-glucoside (cZOG) cytokinin glucosylation grain-yield traits lateral root panicle development rice

Production and characterization of high porosity porous Fe?Cr?C alloys by the space holder leaching technique

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International Journal of Minerals,Metallurgy and Materials 2016年第7期23卷 793-798页

作者： Da-rong tian Yu-hua Pang Liang Yu Li Sun School of Metallurgical Engineering Xi'an University of Architecture and TechnologyXi'an 710055China Research Center of Metallurgical Engineering and Technology of Shaanxi Province Xi'an 710055China AVIC Xi'an Aircraft Industry(Group)Company Ltd. Xi'an 710000China

Spherical carbamide particles were employed to produce porous Fe–Cr–C alloy with high porosity and large aperture via the space-holder leaching technique. A series of porous samples were prepared by regulating the processing parameters, which included the carbamide content and the compaction pressure. The pore characteristics and compression properties of the produced samples were investigated. The samples were characterized by scanning electron microscopy, image analysis, and compression tests. The results showed that the macro-porosity and the mean pore size were in the ranges 40.4%–82.4% and 0.6–1.5 mm, respectively. The compressive strength varied between 25.38 MPa and 127.9 MPa, and was observed to decrease with increasing total porosity.

关键词： porous metal powder metallurgy cellular manufacturing porosity compressive strength

The key target of neuroprotection after the onset of ischemic stroke: secretory pathway Ca^(2+)-ATPase 1

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Neural Regeneration Research 2015年第8期10卷 1271-1278页

作者： Li-hua Li Xiang-rong tian Zhi-ping Hu School of Medicine Jishou University Department of Neurology Second Xiangya Hospital Central South University College of Biology and Environmental Science Jishou University

The regulatory mechanisms of cytoplasmic Ca2＋ after myocardial infarction-induced Ca2＋ overload involve secretory pathway Ca2＋-ATPase 1 and the Golgi apparatus and are well understood. However, the effect of Golgi apparatus on Ca2＋ overload after cerebral ischemia and reperfusion remains unclear. Four-vessel occlusion rats were used as animal models of cerebral ischemia. The expression of secretory pathway Ca2＋-ATPase 1 in the cortex and hippocampus was detected by immunoblotting, and Ca2＋ concentrations in the cytoplasm and Golgi vesicles were determined. Results showed an overload of cytoplasmic Ca2＋ during ischemia and reperfusion that reached a peak after reperfusion. Levels of Golgi Ca2＋ showed an opposite effect. The expression of Golgi-specific secretory pathway Ca2＋-ATPase 1 in the cortex and hippocampus decreased before ischemia and reperfusion, and increased after reperfusion for 6 hours. This variation was similar to the alteration of calcium in separated Golgi vesicles. These results indicate that the Golgi apparatus participates in the formation and alleviation of calcium overload, and that secretory pathway Ca2＋-ATPase 1 tightly responds to ischemia and reperfusion in nerve cells. Thus, we concluded that secretory pathway Ca2＋-ATPase 1 plays an essential role in cytosolic calcium regulation and its expression can be used as a marker of Golgi stress, responding to cerebral ischemia and reperfusion. The secretory pathway Ca2＋-ATPase 1 can be an important neuroprotective target of ischemic stroke.

关键词： nerve regeneration brain injury global cerebral ischemia Golgi apparatus Golgi stress cytoplasmic Ca2+ homeostasis Golgi Ca2+ Ca2+ pump secretory pathway Ca2+-ATPase 1 neural protection NSFC grant neural regeneration

Two New Dihydroflavanoids from Patrinia villosa Juss

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Chinese Chemical Letters 2006年第2期17卷 218-220页

作者： Jin Yong PENG Guo rong FAN Yu tian WU Shanghai Key Laboratory for Pharmaceutical Metabolite Research School of Pharmacy Second Military Medical University Shanghai 200433

Two new dihydroflavonoids were obtained from the traditional Chinese medicinal herb Patrinia villosa Juss. Their structures were elucidated as （2S）-5, 7, 2＇, 6＇-tetrahydroxy-6, 8-di （γ, γ-dimethylallyl） flavanone （1） and （2S）-5, 7, 2＇, 6＇-tetrahydroxy-6-1avandulylated flavanone （2） by spectroscopic methods including UV, IR, HR-TOF-MS, 1D NMR and 2D NMR techniques.

关键词： Patrinia villosa Juss prenylated flavonoids.

Successful implementation of intestinal resection and anastomosis in non-human primates suggests the possibility of longitudinal intestinal research

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Zoological Research 2020年第4期41卷 449-454页

作者： Xue-Hui Wang tian-Zhang Song Lei Li Ren-rong tian Yong-Tang Zheng School of Life Sciences University of Science and Technology of ChinaHefeiAnhui 230026China Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences KIZ-CUHK Joint Laboratory of Bioresources and Molecular Research in Common DiseasesCenter for Biosafety Mega-ScienceKunming Institute of ZoologyChinese Academy of SciencesKunmingYunnan 650223China Dong fang Animal Hospital KunmingYunnan 650228China

DEAR EDITOR,Intestinal biopsy is a basic experimental method for studying pathological changes in the intestinal tract during human immunodeficiency virus(HIV)*** this study,jejunal resection and anastomosis were succ... 详细信息

关键词： anastomosis resection biopsy

Transmission Considerations with QoS Support to Deliver Real-Time Distributed Speech Recognition Applications

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Wuhan University Journal of Natural Sciences 2002年第1期7卷 65-70页

作者： Zhu Xiao-gang Zhu Hong-wen rong Meng-tian Department of Electronic Engineering Shanghai Jiaotong University Shanghai 200030 China

Distributed speech recognition (DSR) applications have certain QoS (Quality of service) requirements in terms of latency, packet loss rate, etc. To deliver quality guaranteed DSR application over wirelined or wireless links, some QoS mechanisms should be provided. We put forward a RTP/RSVP transmission scheme with DSR-specific payload and QoS parameters by modifying the present WAP protocol stack. The simulation result shows that this scheme will provide adequate network bandwidth to keep the real-time transport of DSR data over either wirelined or wireless channels.

关键词： distributed speech recognition quality of service real-time transmission protocol resource reservation protocol wireless application protocol

Prevention and Treatment of KSHV-associated Diseases with Antiviral Drugs

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Virologica Sinica 2008年第6期23卷 486-495页

作者： Ren-rong tian Qing-jiao LIAO Xulin CHEN State Key Laboratory of Virology Wuhan Institute of Virology Chinese Academy of Sciences Wuhan 430071China

Kaposi’s sarcoma-associated herpesvirus (KSHV) was first identified as the etiologic agent of Kaposi’s sarcoma (KS) in 1994. KSHV infection is necessary,but not sufficient for the development of Kaposi sarcoma (KS),primary effusion lymphoma (PEL),and multicentric Castleman disease (MCD). Advances in the prevention and treatment of KSHV-associated Diseases have been achieved,even though current treatment options are ineffective,or toxic to many affected persons. The identification of new targets for potential future therapies and the randomized trial to evaluate the efficacy of new antivirals are required.

关键词： Antiviral drugs Kaposi's sarcoma-associated herpesvirus (KS HV) Kaposi's sarcoma (KS) Primaryeffusion lymphoma Multicentric castleman disease

Lie Symmetry and Conserved Quantity of Three-Order Lagrangian Equations for Non-conserved Mechanical System

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Communications in Theoretical Physics 2006年第2期45卷 350-352页

作者： MA Shan-Jun YANG Xue-Hui YAN rong HUANG Pei-tian College of Physics and Communication Electronics Jiangxi Normal University Nanchang 330027 China

Based on the infinitesimal and one parameter transformation, the problem of Lie symmetry of three-order Lagrangian equations has been studied. Under Lie transformation, the sufficient and necessary condition which kee... 详细信息

关键词： three-order Lagrangian equation Lie symmetry conserved quantity