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Studies on the Rice LEAF INCLINATION1 （LC1）, an IAA-amido Synthetase, Reveal the Effects of Auxin in Leaf Inclination Control

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Molecular Plant 2013年第1期6卷 174-187页

作者： Shu-qing Zhao jing-jing Xiang Hong-Wei Xue National Key Laboratory of Plant Molecular Genetics institute of Plant Physiology and Ecology Shanghai Institutes for Biological Sciences ChineseAcademy of Sciences Shanghai 200032 China

The angle of rice leaf inclination is an important agronomic trait and closely related to the yields and archi- tecture of crops. Although few mutants with altered leaf angles have been reported, the molecular mechanism remains to be elucidated, especially whether hormones are involved in this process. Through genetic screening, a rice gain-of- function mutant leaf inclination1, Icl-D, was identified from the Shanghai T-DNA Insertion Population （SHIP）. Phenotypic analysis confirmed the exaggerated leaf angles of Icl-D due to the stimulated cell elongation at the lamina joint. LC1 is transcribed in various tissues and encodes OsGH3-1, an indole-3-acetic acid （IAA） amido synthetase, whose homolog of Arabidopsis functions in maintaining the auxin homeostasis by conjugating excess IAA to various amino acids. Indeed, recombinant LC1 can catalyze the conjugation of IAA to Ala, Asp, and Asn in vitro, which is consistent with the decreased free IAA amount in Icl-D mutant. Icl-D is insensitive to IAA and hypersensitive to exogenous BR, in agreement with the microarray analysis that reveals the altered transcriptions of genes involved in auxin signaling and BR biosynthesis. These results indicate the crucial roles of auxin homeostasis in the leaf inclination control.

关键词： rice leaf inclination auxin GH3.

Absorption Cross Section of Static Einstein-Maxwell Dilation Axion Black Hole for Scalar Particles

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Communications in Theoretical Physics 2007年第4期47卷 665-668页

作者： LIU Chang-qing jing Ji-Liang Institute of Physics and Department of Physics Hunan Normal University Changsha 410081 China

The absorption cross section of the static Einstein-Maxwell dilaton axion （EMDA） black hole for scalar particles is investigated. It is shown that the ratio of the absorption cross section of the EMDA black hole to that of the Schwarzschild black hole decreases as the absolute value of the dilaton increases, and it becomes zero as the dilaton tends to its extremal value. It is also shown that the absorption cross section decreases as both the v and the absolute value of the dilaton increase, and it decreases as the mass of the particle decreases.

关键词： absorption cross section black hole dilaton

Cross-layer optimized Chord protocol for separated ring convergence in MANET

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The Journal of China Universities of Posts and Telecommunications 2009年第4期16卷 84-90页

作者： MEI jing-qing JI Hong LI Ting Key Laboratory of Universal Wireless Communications Ministry of Education Beijing University of Posts and Telecommunications Beijing 100876 China

An optimized Chord protocol is proposed to solve the convergence problem for separated Chord rings over mobile Ad-hoc networks （MANETs）. This protocol exploits the information of topological neighbors in routing layer by utilizing a cross-layer design, and periodically detects whether there is any neighbor node that belongs to an alien Chord ring by sending detecting packets. The detection will be confirmed and then the corresponding predecessor node will be found out to initialize convergence of the Chord rings. Theoretical analysis and experiment results show that the proposed algorithm can detect separated Chord rings and implement the convergence process efficiently, and that a significant improvement in the successful lookup ratio is also achieved at an acceptable overhead for the system maintenance. Moreover, the proposed protocol can ensure the stability and scalability of the system.

关键词： convergence Chord mobile Ad-hoc network (MANET) cross-layer

Query routing mismatch alleviation architecture for P2P file lookup in MANETs

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The Journal of China Universities of Posts and Telecommunications 2011年第4期18卷 111-117页

作者： MEI jing-qing JI Hong LI Yi Key Laboratory of Universal Wireless Communications Ministry of Education Beijing University of Posts and Telecommunications Beijing 100876 China

A cross-layer optimized query routing mismatch alleviation （QRMA） architecture is proposed to mitigate the problem of query routing mismatch （QRM） phenomenon between the structured peer to peer （P2P） overlay and the routing layer in mobile Ad-hoc networks （MANETs）, which is an important issue that results in the inefficiency of lookup process in the system. Explicated with the representative Chord protocol, the proposal exploits the information of topologic neighbors in the routing layer of MANETs to find if there is any optimized alternative next hop in P2P overlay during conventional lookup progress. Once an alternative next hop is detected, it will take the shortcut to accelerate the query procedure and therefore alleviate the QRM problem in scalable MANETs without any assistance of affiliation equipments such as GPS device. The probability of finding out such an alternative node is formulated and the factors that could increase the chance are discussed. The simulation results show that the proposed architecture can effectively alleviate the QRM problem and significantly improve the system performance compared with the conventional mechanism.

关键词： query routing mismatch P2P overlay Chord MANETs

In-line Plasma-induced Graft-copolymerization of Pentaerythritol Triacrylate onto Polypropylene

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Chinese Journal of Polymer Science 2018年第8期36卷 979-983页

作者： Gui-Qiu Ma Guan-Kai Sun Zhe Ma jing-qing Li jing Sheng Department of Polymer Material Science and Engineering Institute of Advanced Polymer MaterialsSchool of Material Science and EngineeringTianjin Key Laboratory of Composite and Functional MaterialsTianjin University

Pentaerythritol triacrylate （PETA） was successfully grafted onto the plasma-treated isotactic polypropylene （iPP） via the in situ melt processing. The X-ray photoelectron spectroscopy （XPS） results showed that the hydroxyl and carbonyl groups, and peroxides could be generated via plasma treatment. The content of free radical in plasma-treated iPP （PiPP） was measured by 2,2-diphenyl-1- picrylhydrazyl （DPPH）. It was found that the resulting peroxides induced the grafting copolymerization of PETA onto iPP, and the grafted PETA promoted the formation of β-crystal in PiPP, which was evidenced by Fourier transform infrared spectroscopy （FTIR）, differential scanning calorimetry （DSC） and wide-angle X-ray diffraction （WAXD） measurements, respectively.

关键词： Plasma treatment Melt processing Graft copolymerization Pentaerythritol triacrylate

Single-cell transcriptomics of murine mural cells reveals cellular heterogeneity

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Science China(Life Sciences) 2021年第7期64卷 1077-1086页

作者： Ya-Na Guan Yue Li Moom Roosan qing jing Shanghai Jiao Tong University School of Medicine(SJTUSM)&CAS Key Laboratory of Tissue Microenvironment and Tumor Shanghai Institute of Nutrition and HealthChinese Academy of Sciences(CAS)Shanghai 200031China Chapman University IrvineCA 92618USA

Mural cells(MCs)wrap around the endothelium,and participate in the development and homeostasis of *** have been reported as heterogeneous population morphologically and ***,the transcriptional heterogeneity of MCs was rarely *** this study,we illustrated the transcriptional heterogeneity of MCs with different perspectives by using publicly available single-cell dataset ***,MCs are transcriptionally different from other cell types,and ligand-receptor interactions of different cells with MCs ***-clustering of MCs identified five distinct *** heterogeneity of MCs in tissues was reflected by MC coverage,various distribution of MC subclusters,and ligand-receptor interactions of MCs and parenchymal *** transcriptomic diversity of MCs revealed in this article will help facilitate further research into MCs.

关键词： mural cells single-cell analysis heterogeneity

Study on Ductility Dip Cracking susceptibility in Filler Metal 82 during welding

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Frontiers of Materials Science 2011年第2期5卷 203-208页

作者： jing-qing CHEN Hao LU Wei CUI School of Materials Science and Engineering Shanghai Jiao Tong University Shanghai 200240 China

In this paper, Ductility Dip Cracking （DDC） susceptibility in Inconel600 companion Filler Metal 82 （FM82） under different stress states is investigated. Inconel600 is a Ni-Cr-Fe alloy with excellent resistance to general corrosion, localized corrosion, and stress corrosion, which has been widely used in nuclear power plants. However, the companion FM82 has been shown to be susceptible to DDC in welding process. To resolve the problem, this work is mainly focused on evaluating DDC susceptibility in FM82 in welding process. First of all, Strain to Fracture （STF） test is used to achieve the DDC criterion under simple stress state, and the formation mechanism of DDC was explained. Real welding is a process with complex stress state. Later, to get the DDC susceptibility under complex stress state, models about multi-pass welding were built up by means of finite element method. According to numerical simulation results, relationship of deformation and temperature history is achieved. Moreover, susceptible locations and moments could be determined associated with STF results. The simulation results fairly agree with welding experiment from another research.

关键词： Ductility Dip Cracking (ODC) welding inconel600 numerical simulation

Effect of preoperative transcatheter arterial chemoembolization on proliferation of hepatocellular carcinoma cells

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World Journal of Gastroenterology 2007年第33期13卷 4509-4513页

作者： En-Hua Xiao jing-qing Li Jie-Fu Huang Department of Radiology the Second Xiangya Hospital Central South University Changsha 410011 Hunan Province China Liver Cancer Research Center Sun Yat-sen University of Medical Sciences Guangzhou 510060 Guangdong

AIM： To evaluate the effect of preoperative transcatheter arterial chemoembolization （TACE） on proliferation of hepatocellular carcinoma （HCC） cells. METHODS： A total of 136 patients with HCC underwent liver resection. Of 136 patients, 79 patients received 1 to 5 courses of TACE prior to liver resection （TACE group）, who were further subdivided into four groups： Group A （n = 11） who received i to 4 courses of chemotherapy alone; Group B （n = 33） who received i to 5 courses of chemotherapy combined with iodized oil; Group C （n = 23） who received i to 3 courses of chemotherapy combined with iodized oil and gelatin sponge; and Group D （n = 12） who received 1 to 3 courses of chemotherapy combined with iodized oil, ethanol and gelatin sponge. The other 57 patients only received liver resection （non- TACE group）. The expressions of Ki-67 and proliferating cell nuclear antigen （PCNA） protein were detected in the liver cancer tissues by immunohistochemical method. RESULTS： The Ki-67 protein expression was significantly lower in Groups C and D as compared with non-TACE group （31.35% ± 10.85% vs 44.43% ± 20.70%, 30.93% ± 18.10% vs 44.43% ± 20.70%, respectively, P 〈 0.05）. The PCNA protein expression was significantly lower in Groups C and D as compared with non-TACE group （49.61% ± 15.11% vs 62.92% ± 17.21%, 41.16% ± 11.83% vs 62.92% ± 17.21%, respectively, P 〈 0.05）. The Ki-67 protein expression was significantly higher in Group A as compared with non-TACE group （55.44% ± 13.72% vs 44.43% ± 20.70%, P 〈 0.05）. The PCNA protein expression was significantly higher in Groups A and B as compared with non-TACE group （72.22% ± 8.71% vs 62.92% ± 17.21%, 69.91% ± 13.38% vs 62.92% ± 17.21%, respectively, P 〈0.05）. CONCLUSION： Preoperative multi-material TACE suppresses the proliferation of HCC cells, while a single material embolization and chemotherapy alone enhance the proliferation of HCC cells.

关键词： Hepatocellular carcinoma Transcatheter arterial chemoembolization Proliferating cell nuclear antigen Ki-67

miRNAs and lncRNAs in vascular injury and remodeling

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Science China(Life Sciences) 2014年第8期57卷 826-835页

作者： SONG XiaoWei SHAN DongKai CHEN Jian jing qing Department of Cardiology Changhai Hospital Key Laboratory of Stem Cell Biology Institute of Health SciencesShanghai Institutes for Biological SciencesChinese Academy of Sciences& Shanghai Jiao Tong University School of Medicine Key Laboratory of Stem Cell Biology Institute of Health SciencesShanghai Institutes for Biological SciencesChinese Academy of Sciences & Shanghai Jiao Tong University School of Medicine

Vascular injury,remodeling,as well as angiogenesis,are the leading causes of coronary or cerebrovascular *** blood vessel functional imbalance trends to induce atherosclerosis,hypertension,and pulmonary arterial *** several genes have been identified to be dynamically regulated during vascular injury and remodeling,it is becoming widely accepted that several types of non-coding RNA,such as microRNAs(miRNAs)and long non-coding RNAs(lncRNAs),are involved in regulating the endothelial cell and vascular smooth muscle cell(VSMC)***,we review the progress of the extant studies on mechanistic,clinical and diagnostic implications of miRNAs and lncRNAs in vascular injury and remodeling,as well as angiogenesis,emphasizing the important roles of miRNAs and lncRNAs in vascular ***,we introduce the interaction between miRNAs and lncRNAs,and highlight the mechanism through which lncRNAs are regulating the miRNA *** envisage that continuous in-depth research of non-coding RNAs in vascular disease will have significant implications for the treatment of coronary or cerebrovascular diseases.

关键词： vascular injury and remodeling coronary/cerebrovascular disease miRNA lncRNA angiogenesis endothelial cells smooth muscle cells