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52篇 您的检索式:作者名="Jianjun Qian"
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1Overexpression of the maize GRF10, an endogenous truncated growth-regulating factor protein, leads to reduction in leaf size and plant height显示文摘It has long been thought that growth‐regulating factors(GRFs) gene family members act as transcriptional activators to play important roles in multiple plant developmental processes. However, the recent characterization of Arabidopsis GRF7 showed that it functions as a transcriptional repressor of osmotic stress‐responsive genes. This highlights the complex and diverse mechanisms by which different GRF members use to take action. In this study, the maize(Zea mays L.) GRF10 was functionally characterized to improve this concept. The deduced ZmGRF10 protein retains the N‐terminal QLQ and WRC domains, the characteristic regions as protein‐interacting and DNA‐binding domains, respectively. However,it lacks nearly the entire C‐terminal domain, the regions executing transactivation activity. Consistently, ZmGRF10 protein maintains the ability to interact with GRF‐interacting factors(GIFs) proteins, but lacks transactivation activity.Overexpression of ZmGRF10 in maize led to a reduction in leaf size and plant height through decreasing cell proliferation,whereas the yield‐related traits were not affected. Transcriptome analysis revealed that multiple biological pathways were affected by ZmGRF10 overexpression, including a few transcriptional regulatory genes, which have been demonstrated to have important roles in controlling plant growth and development. We propose that ZmGRF10 aids in fine‐tuning the homeostasis of the GRF‐GIF complex in the regulation of cell proliferation.Lei Wu Dengfeng Zhang Ming Xue Jianjun Qian Yan He Shoucai Wang 2014Journal of Integrative Plant Biology2014,56,11:31
2Effects of particle composition and environmental parameters on catalytic hydrodechlorination of trichloroethylene by nanoscale bimetallic Ni-Fe显示文摘Catalytic nickel was successfully incorporated into nanoscale iron to enhance its dechlorination efficiency for trichloroethylene(TCE), one of the most commonly detected chlorinated organic compounds in groundwater. Ethane was the predominant product. The greatest dechlorination efficiency was achieved at 22 molar percent of nickel. This nanoscale Ni-Fe is poorly ordered and inhomogeneous; iron dissolution occurred whereas nickel was relatively stable during the 24-hr reaction. The morphological characterization provided significant new insights on the mechanism of catalytic hydrodechlorination by bimetallic nanoparticles. TCE degradation and ethane production rates were greatly affected by environmental parameters such as solution pH, temperature and common groundwater ions. Both rate constants decreased and then increased over the pH range of 6.5 to 8.0, with the minimum value occurring at pH 7.5. TCE degradation rate constant showed an increasing trend over the temperature range of 10 to 25?C. However, ethane production rate constant increased and then decreased over the range, with the maximum value occurring at 20?C. Most salts in the solution appeared to enhance the reaction in the first half hour but overall they displayed an inhibitory effect. Combined ions showed a similar effect as individual salts.Jianjun Wei Yajing Qian Wenjuan Liu Lutao Wang Yijie Ge Jianghao Zhang Jiang Yu Xingmao Ma 2014Journal of Environmental Sciences2014,26,5:9
3Correcting ionospheric effects and monitoring two-dimensional displacement fields with multiple-aperture InSAR technology with application to the Yushu earthquake显示文摘Differential synthetic aperture radar interferometry (D-InSAR) can only measure one-dimensional surface displacements along the line-of-sight (LOS) direction which greatly inhibits its development and application.In this paper, we introduce a novel approach to measuring two-dimensional (2-D) surface displacements by exploiting a single InSAR pair, which is called multi-aperture InSAR (MAI) technology.We study the effects of baseline errors and the ionosphere on MAI technology and develop a directional filter and interpolator to minimize the ionospheric effects.A PALSAR image pair covering the 2010 Yushu earthquake is used to estimate the 2-D displacement fields of the earthquake using the MAI approach.The experimental results show that MAI is superior to conventional Offset-Tracking and therefore has great potential in co-seismic displacement measurement and source parameter inversion.HU Jun LI ZhiWei ZHANG Lei DING XiaoLi ZHU JianJun SUN Qian DING Wei 2012Science China Earth Sciences2012,55,12:9
4Fault location of distribution networks based on multi-source information显示文摘In order to promote the development of the Internet of Things(IoT),there has been an increase in the coverage of the customer electric information acquisition system(CEIAS).The traditional fault location method for the distribution network only considers the information reported by the Feeder Terminal Unit(FTU)and the fault tolerance rate is low when the information is omitted or misreported.Therefore,this study considers the influence of the distributed generations(DGs)for the distribution network.This takes the CEIAS as a redundant information source and solves the model by applying a binary particle swarm optimization algorithm(BPSO).The improved Dempster/S-hafer evidence theory(D-S evidence theory)is used for evidence fusion to achieve the fault section location for the distribution network.An example is provided to verify that the proposed method can achieve single or multiple fault locations with a higher fault tolerance.Wenbo Li Jianjun Su Xin Wang Jiamei Li Qian Ai 2020Global Energy Interconnection2020,3,1:7
5Novel synthesis of N-doped graphene as an efficient electrocatalyst towards oxygen reduction显示文摘做氮的 graphene (NG ) 被一个新奇、灵巧、可伸缩的自底向上的方法成功地综合。退火的 NG (NG -- 一) 拥有的高特定的表面区域和一块层次多孔的质地,和在在碱、酸的媒介的氧减小反应的展出显著地改进的 electrocatalytic 活动。分子的动态模拟显示了的 Ab initio 那快速的 H 转移和六成员的 N 结构的热力学的稳定性在 600 敮 x 从 pyrrolic 把包含 N 种类的转变提升了到Ruguanq Ma Xiaodong Ren Bao Yu Xia Yao Zhou Chi Sun Qian Liu Jianjun Liu Jiacheng Wang 2016Nano Research2016,9,3:6
6Fuzzy norm method for evaluating random vibration of airborne platform from limited PSD data显示文摘For random vibration of airborne platform, the accurate evaluation is a key indicator to ensure normal operation of airborne equipment in flight. However, only limited power spectral density(PSD) data can be obtained at the stage of flight test. Thus, those conventional evaluation methods cannot be employed when the distribution characteristics and priori information are unknown. In this paper, the fuzzy norm method(FNM) is proposed which combines the advantages of fuzzy theory and norm theory. The proposed method can deeply dig system information from limited data, which probability distribution is not taken into account. Firstly, the FNM is employed to evaluate variable interval and expanded uncertainty from limited PSD data, and the performance of FNM is demonstrated by confidence level, reliability and computing accuracy of expanded uncertainty. In addition, the optimal fuzzy parameters are discussed to meet the requirements of aviation standards and metrological practice. Finally, computer simulation is used to prove the adaptability of FNM. Compared with statistical methods, FNM has superiority for evaluating expanded uncertainty from limited data. The results show that the reliability of calculation and evaluation is superior to 95%.Wang Zhongyu Wang Yanqing Wang Qian Zhang Jianjun 2014Chinese Journal of Aeronautics2014,27,6:6
7MiR-125a regulates chemo-sensitivity to gemcitabine in human pancreatic cancer cells through targeting A20显示文摘胰腺的 ductal 腺癌(PDAC ) 是最致命的人之一恶意的疾病和在中国的癌症相关的死亡的第六个领先的原因。Gemcitabine 是与 PDAC 为病人的辩解的治疗使用的唯一的首要的化学疗法的代理人,但是 chemo 抵抗限制他们的功效。这里,当时,我们证明 miR-125a 在 chemo 抵抗的 SW1990GZ 房间是起来调整的与 SW1990 房间相比。miR-125a 的在表示上在 SW1990 房间增加了 chemo 抵抗到 gemcitabine,当在 SW1990GZ 房间的 miR-125a 的下面规定增加了 chemo 敏感到 gemcitabine 时。由使用生物信息学分析工具(Targetscan ) , A20 基因的 3 untranslated 区域(3UTR ) 被发现是 miR-125a 的一个目标。酶记者试金进一步证实 A20 3UTR 是 miR-125a 的一个直接目标。在 SW1990 房间的 A20 的在表示上在支持的 SW1990 房间 A20 增加了 chemo 敏感到 gemcitabine,当击倒时 chemo 抵抗到 gemcitabine。最后,在从 chemo 敏感的病人的胰腺的癌症纸巾的 miR-125a 的表示水平来自 chemo 抵抗的病人是比那显著地低的,并且相反地与 A20 mRNA 层次被相关。在结论,我们的结果建议 miR-125a 通过指向 A20 在胰腺的房间把 chemo 抵抗提升到 gemcitabine,它可以为癌症治疗提供新奇治疗学的目标或分子的 biomarkers 并且改进肿瘤诊断或治疗学的回答的预言。Jie Yao Zhennan Li Xiaodong Wang Peng Xu Long Zhao Jianjun Qian 2016Acta Biochimica et Biophysica Sinica2016,48,2:5
8Multivariate coupling mechanism of NOCTUIDAE moth wings' surface superhydrophobicity显示文摘The surface shape, structure, biomaterial and wettability of moth wings (10 NOCTUIDAE species) from the northeast region of China were qualitatively and quantitatively studied by means of a stereoscopic microscope, a scanning electronic microscope, fourier transform infrared spectroscopy(FT-IR) and the interface contact angle measurement. The observation shows that there are scales arranged like over-lapping tiles on the surface of the moth wings. The shapes of the scales are different between species. They overlap horizontally and there is particular space vertically in the direction of the wing veins. The surface of the scale is structured by micron-class grooves and nanometer-class vertical gibbosities. The biomaterial components of the moth wing scale are mostly made up of protein, lipids and chitin. The observation also shows that the contact angle for wings with scales is in the range from 144.8° to 152.9°, while that for those without scales is from 90.0° to 115.9°. It indicates that the surfaces of the wings with scales are more hydrophobic. According as Cassie model, the equation of wettability on the NOCTUIDAE moth wing surface is established and the hydrophobic mechanism is analyzed. It is concluded that the hydrophobicity of the moth wings is induced by the multivariate coupling of the shape, structures and biomaterial of the scales.WANG XiaoJun CONG Qian ZHANG JianJun WAN YanLing 2009Chinese Science Bulletin2009,54,4:5
9Chronic acalculous cholecystitis:correlation of clinical assessment,laboratory data and final histopathology显示文摘Objective:To summarize and analyze the clinical and histopathological features of chronic acalculous cholecystitis (CAC) and to investigate the diagnosis and surgical treatment of chronic acalculous cholecystit.Methods:The study subjects were 39 patients with chronic biliary symptoms but no evidence of stones in the gallbladder by B ultrasonography and magnetic resonance cholopancreatography (MRCP) (CAC group).The CCC group consisted of 66 patients taken randomly from concurrent all patients of chronic calculous cholecystitis (CCC).All patients accepted fibergastroscopy,B ultrasonography,MRCP,laboratory examination preoperatively.We retrospectively analyzed the clinical features,B ultrasonography and MRCP findings,histopathological results and clinical outcomes between the two groups.Results:All the 39 patients were diagnosed by clinical symptoms,B ultrasonography,fatty meal gallbladder contractability studies under ultrasound,fibergastroscopy and magnetic resonance cholangiopancreatography (MRCP),what's more,they were pathologically verified postoperatively.In all patients,there was a complete absence of gallbladder wall contractability.Mucosa epithelial defect was found in 21 patients in CAC group (53.8%) and 16 patients in CCC group (24.2%) respectively (P<0.005).Thickened arteriole wall was found in 29 patients in CAC group (74.4%) and none patient in CCC group (P<0.0001).Thickened gallbladder wall (4 mm or more in thickness) was found in 33 patients in CAC group (84.6%) and 28 patients in CCC group (42.4%) respectively (P<0.005).Bile stasis was found in 23 patients in CAC group (59.0%) and 14 patients in CCC group (21.2%) respectively by ultrasonography preoperatively and confirmed in operation (P<0.005).The outcomes of cholecystectomy,expressed as total or near total relief,was similar in the two groups.No statistically significant differences were observed between patients with CAC (90%) and CCC (80%),the P-value >0.05.Conclusion:Chronic acalculous cholecystitis could be diagnosed by symptoms,ultrasound,fatty meal gallbladder contractability studies under untrasoundand MRCP.The optimal treatment of chronic acalculous cholecystitis characterized by thickened arteriole wall and mucosa epithelial defect is cholecystectomy.Yan Jianjun Zhu Qian Shen Jun Zhou Feiguo Huang Liang Liu Caifeng Zhang Xianghua Cong Wenming Yan Yiqun 2012Journal of Medical Colleges of PLA(China)2012,27,2:4
10Progress of Jinping Underground laboratory for Nuclear Astrophysics(JUNA)显示文摘Jinping Underground laboratory for Nuclear Astrophysics(JUNA) will take the advantage of the ultra-low background of CJPL lab and high current accelerator based on an ECR source and a highly sensitive detector to directly study for the first time a number of crucial reactions occurring at their relevant stellar energies during the evolution of hydrostatic stars. In its first phase, JUNA aims at the direct measurements of^(25)Mg(p,γ)^(26)Al,^(19)F(p,α)^(16)O,^(13)C(α,n)^(16)O and ^(12)C(α,γ)^(16)O reactions. The experimental setup,which includes an accelerator system with high stability and high intensity, a detector system, and a shielding material with low background, will be established during the above research. The current progress of JUNA will be given.WeiPing Liu ZhiHong Li JiangJun He XiaoDong Tang Gang Lian Zhu An JianJun Chang Han Chen QingHao Chen XiongJun Chen ZhiJun Chen BaoQun Cui XianChao Du ChangBo Fu Lin Gan Bing Guo GuoZhu He Alexander Heger SuQing Hou HanXiong Huang Ning Huang BaoLu Jia LiYang Jiang Shigeru Kubono JianMin Li KuoAng Li Tao Li YunJu Li Maria Lugaro XiaoBing Luo HongYi Ma ShaoBo Ma DongMing Mei YongZhong Qian JiuChang Qin Jie Ren YangPing Shen Jun Su LiangTing Sun WanPeng Tan Isao Tanihata Shuo Wang Peng Wang YouBao Wang Qi Wu ShiWei Xu ShengQuan Yan LiTao Yang Yao Yang XiangQing Yu Qian Yue Sheng Zeng HuanYu Zhang Hui Zhang LiYong Zhang NingTao Zhang QiWei Zhang Tao Zhang XiaoPeng Zhang XueZhen Zhang ZiMing Zhang Wei Zhao Zuo Zhao Chao Zhou 2016Science China(Physics,Mechanics & Astronomy)2016,59,4:3
11The combined therapeutic effects of ^(131)iodinelabeled multifunctional copper sulfide-loaded microspheres in treating breast cancer显示文摘Compared to conventional cancer treatment, combination therapy based on well-designed nanoscale platforms may offer an opportunity to eliminate tumors and reduce recurrence and metastasis.In this study, we prepared multifunctional microspheres loading ^(131)I-labeled hollow copper sulfide nanoparticles and paclitaxel( ^(131)I-HCu SNPs-MS-PTX) for imaging and therapeutics of W256/B breast tumors in rats.18 F-fluordeoxyglucose(18 F-FDG) positron emission tomography/computed tomography(PET/CT) imaging detected that the expansion of the tumor volume was delayed(Po0.05) following intra-tumoral(i.t.) injection with ^(131)I-HCu SNPs-MS-PTX plus near-infrared(NIR) irradiation. The immunohistochemical analysis further confirmed the anti-tumor effect. The single photon emission computed tomography(SPECT)/photoacoustic imaging mediated by ^(131)I-HCu SNPs-MS-PTX demonstrated that microspheres were mainly distributed in the tumors with a relatively low distribution in other organs. Our results revealed that ^(131)I-HCu SNPs-MS-PTX offered combined photothermal, chemo-and radio-therapies, eliminating tumors at a relatively low dose, as well as allowing SPECT/CT and photoacoustic imaging monitoring of distribution of the injected agents non-invasively. The copper sulfide-loaded microspheres, ^(131)I-HCu SNPs-MS-PTX, can serve as a versatile theranostic agent in an orthotopic breast cancer model.Qiufang Liu Yuyi Qian Panli Li Sihang Zhang Zerong Wang Jianjun Liu Xiaoguang Sun Michael Fulham Dagan Feng Zhigang Chen Shaoli Song Wei Lu Gang Huang 2018Acta Pharmaceutica Sinica B2018,8,3:3
12Highly efficient and stable solar-powered desalination by tungsten carbide nanoarray film with sandwich wettability显示文摘Solar-powered desalination is a promising way to resolve the worldwide water crisis for its low con- sumption and simple facility. Considering the fragility and aggregations of traditional materials, which may decrease efficiency, we herein introduce a robust tungsten carbide (WC) nanoarray film as a stable and efficient photothermal material, whose absorption is over 97.5% throughout almost the whole solar spectrum range (220–2200 nm) due to nanoarray structure and thus enhanced localized surface plasmon resonance. Besides, for the first time, we modified the film with sandwich wettability. It accelerates evap- oration by reducing water’s reflection of light, enlarging hydrophobic-hydrophilic boundaries, and depressing heat dissipation. Combining high absorption with unique wettability, the WC nanoarray film offers high solar-to-vapor efficiency of 90.8% and produces drinking water at the rate of (1.06 ± 0.10) kg m^(-2)h^(-1)from man-made seawater and (0.98 ± 0.18) kg m^(-2)h^(-1)from heavy metal sewage under one sun (AM 1.5) while 98% performance remains after 1 h×100 times’ reutilization.Nana Han Kai Liu Xinping Zhang Meng Wang Pan Du Zhaohui Huang Daojin Zhou Qian Zhang Tengfei Gao Yin Jia Liang Luo Jianjun Wang Xiaoming Sun 2019Science Bulletin2019,64,6:2
13Long-term survival for spontaneous rupture of hepatocellular carcinoma treated with hepatectomy显示文摘Objective:To determine the prognostic factors of ruptured hepatocellular carcinoma(HCC) and report the management of patients with spontaneous rupture of HCC in a single center during a 5-year period and to evaluate one-stage hepatectomy.Methods:A series of 4,209 patients with HCC were collected at Eastern Hepatobiliary Surgery Hospital from April 2002 to November 2006,of whom 200 patients(4.8%) with ruptured HCC were studied retrospectively regarding their clinical characteristics and prognostic factors.The one-stage therapeutic approach to manage ruptured HCC consisted of initial management by conservative method,transarterial embolization(TAE) or surgical hepatectomy.Results of various treatments were evaluated and compared in the randomly selected 202 patients with no history of rupture during the same study period.Results:A total of 200 patients with spontaneous rupture of HCC were studied who underwent surgical treatment(n=105),TAE 33 and conservative treatment(ConT 62).A multivariate analysis using the Cox hazard regression model(including all the patients;n=200) identified surgical hepatectomy as the only independent factor determining a relatively long survival period(P<0.0001).On the other hand,in a further analysis of the patients in whom surgical hepatectomy was successfully performed(n=105),which identified a maximum tumor size exceeding 6 cm as significant determinants of a poor 12-month(P=0.036),and a multivariate analysis did not identify as any inverse independent factor determining relatively long-term survival,only a maximum tumor size exceeding 6 cm exhibited a tendency toward being a determinant factor(P=0.083).Conclusion:Considering the high propensity to spontaneous rupture,as long as preoperatively clinical evaluation meet surgery requirements,elective one-stage hepatectomy for patients with ruptured HCC is the first treatment option.Prolonged survival could be achieved in selected patients with hepatic resection,although the survival results were inferior to those of the patients who did not have the complication of rupture.Zhu Qian Yan Jianjun Zhang Xianghua Cao Jie Huang Liang Li Jing Shen Jun Zhou Feiguo Yan Yiqun 2012Journal of Medical Colleges of PLA(China)2012,27,3:2
14Clay nanosheet-mediated delivery of recombinant plasmids expressing artificial miRNAs via leaf spray to prevent infection by plant DNA viruses显示文摘Whitefly-transmitted begomoviruses are economically important plant pathogens that cause severe problems in many crop plants,such as tomato,papaya,cotton,and tobacco.Tomato yellow leaf curl virus(TYLCV)is a typical monopartite begomovirus that has been extensively studied,but methods that can efficiently control begomoviruses are still scarce.In this study,we combined artificial microRNA(amiRNA)-mediated silencing technology and clay nanosheetmediated delivery by spraying and developed a method for efficiently preventing TYLCV infection in tomato plants.We designed three amiRNAs that target different regions of TYLCV to silence virus-produced transcripts.Three plant expression vectors expressing pre-amiRNAs were constructed,and recombinant plasmid DNAs(pDNAs)were loaded onto nontoxic and degradable layered double hydroxide(LDH)clay nanosheets.LDH nanosheets containing multiple pDNAs were sprayed onto plant leaves.We found that the designed amiRNAs were significantly accumulated in leaves 7 days after spraying,while the pDNAs were sustainably detected for 35 days after the spray,suggesting that the LDH nanosheets released pDNAs in a sustained manner,protected pDNAs from degradation and efficiently delivered pDNAs into plant cells.Importantly,when the LDH nanosheets coated with pDNAs were sprayed onto plants infected by TYLCV,both the disease severity and TYLCV viral concentration in sprayed plants were significantly decreased during the 35 days,while the levels of H_(2)O_(2) were significantly increased in those plants.Taken together,these results indicate that LDH nanosheets loaded with pDNAs expressing amiRNAs can be a sustainable and promising tool for begomovirus control.Qili Liu Yanpeng Li Kedong Xu Dongxiao Li Haiyan Hu Feng Zhou Puwen Song Yongang Yu Qichao Wei Qian Liu Weipeng Wang Ruifang Bu Haili Sun Xiaohui Wang Jianjun Hao Honglian Li Chengwei Li 2020Horticulture Research2020,7,1:1
15Competitive interaction between the invasive Solidago canadensis and native Kummerowia striata in lead contaminated soil 显示文摘Zhang Qian Yang Ruyi Tang Jianjun 2008Botanical Studies2008,49,:1
16Variation in community structure of arbuscular mycorrhizal fungi associated with a Cu tolerant plant— Elsholtzia splendens显示文摘Ruyi Yang Shuting Zan Jianjun Tang Xin Chen Qian Zhang 2009Applied Soil Ecology2009,,3:1
17Online Handwriting Recognition of Tibetan Characters Based on the Statistical Method显示文摘Weilan Wang Jianjun Qian Daohui Wang Zhuoma Duojie 2011通讯和计算机(中英文版)2011,8,3:1
18Numerical simulation of wind flow over transverse and pyramid dunes显示文摘Benli Liu Jianjun Qu Weimin Zhang Guangqiang Qian 2011Journal of Wind Engineering & Industrial Aerodynamics2011,,8:1
19The Probability Analysis for the Many-Versus-One Guerrilla War显示文摘This paper discusses a stochastic duel model between two forces. On one side is the guerrilla(or terrorists) which has only one weapon(or person), and on the other an organized force of some sort which has many weapons. The model is called the many-versus-one guerrilla war. The guerrilla side has a number of advantages such as choice of location and time of engagement, concealment by topography, observation of the intended target, and line of fire. The authors present these advantages in what they believe are a realistic scenario of a duel between the guerrilla force and the organized force. By the four suppositions coinciding with the practical duel background, the paper presents the formulas to calculate the satisfying probability, the weak satisfying probability, and the acceptable probability of the attack side.LIU Liwei LI Jianjun QIAN Linfang 2015Journal of Systems Science & Complexity2015,28,3:1
20Performance-first control for discrete-time LQG problems显示文摘Li Duan Qian Fucai Gao Jianjun 2009IEEE Trans on Automatic Control2009,54,9:1
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