|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Transmission Dynamics of an Outbreak of the COVID-19 Delta Variant B.1.617.2——Guangdong Province,China,May-June 2021显示文摘On May 21,2021,a local case of coronavirus disease 2019(COVID-19)was confirmed in a 75-year-old woman(experienced onset of symptoms on May 18)in Liwan District,Guangzhou City,Guangdong Province,China.The number of infections has increased in the following 10 days and led to 5 generations of transmission. | Meng Zhang Jianpeng Xiao Aiping Deng Yingtao Zhang Yali Zhuang Ting Hu Jiansen Li Hongwei Tu Bosheng Li Yan Zhou Jun Yuan Lei Luo Zimian Liang Youzhi Huang Guoqiang Ye Mingwei Cai Gongli Li Bo Yang Bin Xu Ximing Huang Yazun Cui Dongsheng Ren Yanping Zhang Min Kang Yan Li | 2021 | China CDC weekly2021，3，27： | 51 |
| 2 | Influence of moisture on the growth and biomass allocation in Haloxylon ammodendron and Tamarix ramosissima seedlings in the shelterbelt along the Tarim Desert Highway, Xinjiang, China显示文摘The authors studied the effects using three different levels of irrigation on the growth and biomass allocation in H. ammodendron and T. ramosissima seedlings in the shelterbelt along the Tarim Desert Highway. The three irrigation amounts were 35 (CK), 24.5 (treatment 1), and 14 (treatment 2) kg·ind. plant-1·once-1, respectively. The results show that (1) the vertical depth of the two seedlings’ root increased with lower levels of irrigation showing that the two species adapted to decreased irrigation by root elongation in the hinterland of the Taklimakan Desert, and the vertical root depth of H. ammodendron under treatment 2 was notably higher than CK. (2) Compared with CK, the belowground biomass of treatment 1 and 2 both showed a significant increase as follows: H. ammodendron seedlings in- creased by 14.51% and 37.03% under treatment 1 and 2, respectively, while T. ramosissima seedlings increased by 68.19% and 25.78% under treatment 1 and 2, respectively. This means that H. ammoden- dron seedlings were more adapted to the conditions in treatment 2 while T. ramosissima seedlings were better adapted to treatment 1 conditions. (3) When compared with CK, the fine root bomass of these two species all exhibited some increase under both treatments, and ANOVA analysis showed that the biomass of deep layer root of the two species under treatment 2 was notably higher than CK and treatment 1. This should help seedlings to more effectively absorb soil water from deep layers during dry conditions. (4) The root-shoot ratio was different for these two species. For H. ammodendron seed- lings, the root-shoot ratio was less than 1, while for T. ramosissim seedlings it was larger than 1. The root-shoot ratio of H. ammodendron seedlings increased with decreasing levels of irrigation, and that of T. ramosissim seedlings also increased under treatment 2. (5) With decreasing levels of irrigation, due to the difference of species, the growth variation of aboveground indexes was also different, while compared with CK, it was not significant. | SHAN LiShan ZHANG XiMing WANG YouKe WANG Hui YAN HaiNong WEI Jiang XU Hao | 2008 | Chinese Science Bulletin2008，53，S2： | 15 |
| 3 | CT image fusion in the evaluation of radiation treatment planning for non-small cell lung cancer显示文摘Objective: We studied the application of CT image fusion in the evaluation of radiation treatment planning for non-small cell lung cancer (NSCLC). Methods: Eleven patients with NSCLC, who were treated with three-dimensional con-formal radiation therapy, were studied. Each patient underwent twice sequential planning CT scan, i.e., at pre-treatment, and at mid-treatment for field reduction planning. Three treatment plans were established in each patient: treatment plan A was based on the pre-treatment planning CT scans for the first course of treatment, plan B on the mid-treatment planning CT scans for the second course of treatment, and treatment plan F on the fused images for the whole treatment. The irradiation doses received by organs at risk in the whole treatment with treatment A and B plans were estimated by the plus of the parameters in treatment plan A and B, assuming that the parameters involve the different tissues (i.e. V20=AV20+BV20), or the same tissues within an organ (i.e. Dmax=ADmax+BDmax). The assessment parameters in the treatment plan F were calculated on the basis of the DVH of the whole treatment. Then the above assessment results were compared. Results: There were marked differ-ences between the assessment results derived from the plus of assessment parameters in treatment plan A and B, and the ones derived from treatment plan F. Conclusion: When a treatment plan is altered during the course of radiation treatment, image fusion technique should be performed in the establishment of a new one. The estimation of the assessment parameters for the whole treatment with treatment plan A and B by simple plus, is inaccurate. | WeiGe Guangjin Yuan Changhu Li Yaogui Wu Yanyan Zhang Ximing Xu | 2008 | The Chinese-German Journal of Clinical Oncology2008，7，6： | 10 |
| 4 | Multi-quasiparticle rotational bands in neutron-rich erbium isotopes显示文摘Multi-quasiparticle states and rotational bands in neutron-rich erbium isotopes have been investigated by the configuration-constrained pairing-deformation-frequency self-consistent total-Routhian-surface (TRS) method with particle-number-conserved pairing. Specifically, the recently observed Kn=4-bands in 168,170,172 Er have been found to experience a configuration change in our calculation. Some other multi-quasiparticle states with uncertain configuration assignments have been reinvestigated by calculating their collective rotations. The configuration-constrained TRS calculation can reproduce experimental data consistently. | FU XiMing JIAO ChangFeng XU FuRong ZHANG ZhenHua | 2013 | Science China(Physics,Mechanics & Astronomy)2013，56，8： | 8 |
| 5 | Epithelial-mesenchymal transition and cancermetastasis显示文摘上皮间充质的转变(EMT ) 开始在哺乳动物,以及维持重要身体的稳定性的一个基本生物事件的 embryogenesis 期间被看作生理的现象。最近的研究显示 EMT 在各种各样的肿瘤前进,上皮的癌症通过入侵并且转移起一个关键作用。房间特征在 EMT,房间在失去房间房间和房间矩阵相互作用和顶端的极性期间被改变,重新组织他们的细胞骨架,并且变得孤立,对 anoikis 能动,以及抵抗,然后成为塑造锭子的间充质的房间。这评论在关于 EMT 学习房间形态发生,制造者和分子的机制规定上放强调,讨论在 EMT 和癌症发展和转移之间的关系。 | Junjian Deng Ximing Xu | 2011 | The Chinese-German Journal of Clinical Oncology2011，10，3： | 7 |
| 6 | Plants water status of the shelterbelt along the Tarim Desert Highway显示文摘The plant water consumption and irrigation management are the core issue of the sustainable growing of the Tarim Desert Highway shelterbelt in the hyperaride Taklimakan Desert. The stem sap flow, water status and water consumption of shelterbelt plants were studied, then, the issue of the water save in the process of shelterbelt irrigation management was discussed by measuring the sap flow of shelterbelt plants with a stem sap flow gauge. The stem sap flow exhibited a distinct diurnal course with maximum values between 10:00 and 15:00, and minimum values between 00:00 and 03:00. Generally, sap flow was lower at night than during the day. The daily average stem sap flow of Calligonum arborescens, Tamarix ramosissima and Haloxylon ammodendron (diameter 1.9―2.0 cm) was 67.2 g·h-1, 77.05 g·h-1 and 61.54 g·h-1 respectively. The sap flow was influenced by environmental factors, and the solar radiation, wind velocity, temperature and relative humidity were significantly correlative with plant stem sap flow. The annual water consumption of 8-a Calligonum arborescens, Tamarix ramosissima and Haloxylon ammodendron was 1937.80 kg, 1253.39 kg and 1026.96 kg, while daily average water consumption was 9.69 kg, 6.27 kg and 5.13 kg respectively. Under drip irrigation, soil moisture content of the shelterbelt in different months indicated no obvious fluctuation, and soil moisture was adequate. The predawn and midday plant water potential reflected that the plant water status was in good conditions. There is still some water-saving space if optimizing the present water management, integrating water resources conservation and protection performance. | XU Hao ZHANG XiMing YAN HaiLong LIANG ShaoMin SHAN LiShan | 2008 | Chinese Science Bulletin2008，53，S2： | 5 |
| 7 | Joint Trajectory and Passive Beamforming Optimization in IRS-UAV Enhanced Anti-Jamming Communication Networks显示文摘This paper investigates the anti-jamming communication scenario where an intelligent reflecting surface(IRS)is mounted on the unmanned aerial vehicle(UAV)to resist the malicious jamming attacks.Different from existing works,we consider the dynamic deployment of IRS-UAV in the environment of the mobile user and unknown jammer.Therefore,a joint trajectory and passive beamforming optimization approach is proposed in the IRS-UAV enhanced networks.In detail,the optimization problem is firstly formulated into a Markov decision process(MDP).Then,a dueling double deep Q networks multi-step learning algorithm is proposed to tackle the complex and coupling decision-making problem.Finally,simulation results show that the proposed scheme can significantly improve the anti-jamming communication performance of the mobile user. | Zhifeng Hou Jin Chen Yuzhen Huang Yijie Luo Ximing Wang Jiangchun Gu Yifan Xu Kailing Yao | 2022 | China Communications2022，19，5： | 4 |
| 8 | Structural basis of ALMT1-mediated aluminum resistance in Arabidopsis显示文摘The plant aluminum(Al)-activated malate transporter ALMT1 mediates the efflux of malate to chelate the Al in acidic soils and underlies the plant Al resistance.Here we present cryo-electron microscopy(cryo-EM)structures of Arabidopsis thaliana ALMT1(AtALMT1)in the apo,malate-bound,and Al-bound states at neutral and/or acidic pH at up to 3.0Åresolution.The AtALMT1 dimer assembles an anion channel and each subunit contains six transmembrane helices(TMs)and six cytosolicα-helices.Two pairs of Arg residues are located in the center of the channel pore and contribute to malate recognition.Al binds at the extracellular side of AtALMT1 and induces conformational changes of the TM1-2 loop and the TM5-6 loop,resulting in the opening of the extracellular gate.These structures,along with electrophysiological measurements,molecular dynamic simulations,and mutagenesis study in Arabidopsis,elucidate the structural basis for Al-activated malate transport by ALMT1. | Jiangqin Wang Xiafei Yu Zhong Jie Ding Xiaokang Zhang Yanping Luo Ximing Xu Yuan Xie Xiaoxiao Li Tian Yuan Shao Jian Zheng Wei Yang Jiangtao Guo | 2022 | Cell Research2022，32，1： | 3 |
| 9 | A new lever-type variable friction damper for freight bogies used in heavy haul railway显示文摘To overcome defects caused by the complex structure and unstable damping performance of the wedgetype damper, a new lever-type friction damper has been developed for use in freight bogies; the design allows the advantages of traditional three-piece bogies to be retained.A detailed description of the structure and mechanism of the lever-type damper is provided, followed by a stress analysis using the finite element method. Dynamic performance characteristics of the lever-type damper and the wedge-type damper are compared in terms of the nonlinear critical speed, riding index, and curve negotiation. The results indicate that the maximum stress of the lever remains below its yield limit. The lever-type car has higher running performance reliability, and achieves similar nonlinear critical speed, riding index, and curve negotiation when compared with the wedge-type car. | Ximing Xu Maohai Fu Zhaoxia Xu Zhongyi Chen | 2016 | Journal of Modern Transportation2016，24，3： | 2 |
| 10 | Mechanisms of radioresistance in hepatocellular carcinoma显示文摘Hepatocellular carcinoma(HCC), one of the most common cancers in the world, is characterized by poor prognosis and recurrence after resection. Its prevalence is highest in developing countries, particularly where there is high incidence of hepatitis B virus infection. Several curative treatments are available for early stage HCC; however, these options are not available for advanced disease. New techniques allowing the specific delivery of high-dose radiotherapy enable their use in the treatment of HCC, which has been avoided in the past due to low hepatic tolerance for radiation. This presents a new challenge—the development of resistance to radiotherapy and subsequent disease recurrence. Recently, the mechanisms controlling radioresistance have begun to be elucidated. Understanding the molecular basis of radioresistance is key to developing new strategies with better treatment response and increased patient survival. | Kihn-Alarcón Alba de Jesús Ximing Xu | 2017 | Oncology and Translational Medicine2017，3，4： | 2 |
| 11 | Collective rotations of fission isomers in actinide nuclei显示文摘Using the total-Routhian-surface(TRS)method,the rotational behaviors of fission isomers in the second well of actinide nuclei234 242U,236 244Pu and238 246Cm were investigated.The pairing-deformation-frequency self-consistent TRS calculations reproduced reasonably the experimental moments of inertia extracted from spectroscopic data.It is calculated that,in these largelyelongated(β2≈0.65 andβ4≈0.03)fission isomers,theν12[981]neutron andπ12+[651]proton align simultaneously at rotational frequencyω≈0.4 0.6 MeV(corresponding to spin I≈80),which leads to clear upbending in moments of inertia(MoI’s).Our calculations have indicated that the hexadecapole deformationβ4influenced significantly the frequency of the rotational alignment of the proton12+[651]orbit. | XIE KePing KE WeiYao LIANG WuYang FU XiMing JIAO ChangFeng PEI JunChen XU FuRong | 2014 | Science China(Physics,Mechanics & Astronomy)2014，57，2： | 2 |
| 12 | The effects of sulfate reducing bacteria on corrosion of carbon steel Q235 under simulated disbonded coating by using electrochemical impedance spectroscopy显示文摘 | Jin Xu Kaixiong Wang Cheng Sun Fuhui Wang Ximing Li Jiaxing Yang Changkun Yu | 2011 | Corrosion Science2011，，4： | 2 |
| 13 | Trans-cinnamaldehyde promotes nitric oxide release via the protein kinase-B/v-Akt murine thymoma viral oncogene-endothelial nitric oxide synthase pathway to alleviate hypertension in SHR.Cg-Lepr^(cp)/NDmcr rats显示文摘OBJECTIVE:To evaluate whether endothelial dysfunction and hypertension are prevented by trans-cinnamaldehyde(t CA) through the activation of endothelial nitric oxide synthase(e NOS).METHODS:Human umbilical vein endothelial cells(HUVECs) were cultured in vitro and stimulated with t CA to determine cell viability using the methyl thiazolyl tetrazolium assay.The effect of t CA on nitric oxide(NO) production was determined by diaminofluorescein-dyes in the absence or presence of inhibitors of e NOS,AMPK,PKA,and AKT.The effect of t CA on blood pressure was determined by the tail-cuff method in obesity spontaneous hypertension(SHR.Cg-Leprcp/NDmcr) rats.The phosphorylation of e NOS and protein expression of the insulin-signaling pathway(Ins R-IRS1-PI3 K-AKT)were measured by western blot.RESULTS:t CA at concentrations less than 100 μM did not affect cell viability in cultured HUVECs.Stimulation with t CA promoted NO release in a time-dependent manner compared with the control group.t CA-treated HUVECs also significantly increased AKT-Ser473 and e NOS-Ser1177 phosphorylation.In SHR-CP rats,treatment with t CA at a dose of 40 mg/kg/day for 6 weeks markedly reduced the systolic blood pressure and diastolic blood pressure,increased the phosphorylation of AKT and e NOS,and increased urinary nitric oxidation.CONCLUSION:t CA attenuated endothelial dysfunction and reduced blood pressure in SHR-CP rats.The underlying mechanisms may involve the increase in AKT and e NOS phosphorylation and the release of e NOS-derived NO. | Zhang Lu Wu Lili Liu Ximing Yoshitomi Hisae Ikeda Katsumi Negishi Hiroko Pan Yajing Sun Wen Qin Lingling Li Juan-E Xu Tunhai Liu Tonghua Gao Ming | 2018 | Journal of Traditional Chinese Medicine2018，38，4： | 2 |
| 14 | Qing Dai, a traditional Chinese medicine for the treatment of chronic hemorrhagic radiation proctitis显示文摘评估戴青的功效和安全的目的(靛青天赋是) ,繁体中文药,在为长期的出血性的放射直肠炎的治疗。有在到 2008 年 1 月的 2005 年 1 月之间的长期的出血性的放射直肠炎的十个病人与戴青一起被对待的方法。戴青在 1.5 g 的剂量口头上地被管理,为 5 连续的天的出价,为二堂功课的每 2 个星期。病人们在每 3 个月上面被跟随。临床的反应和副作用被评估。六个病人显示出的结果分级 0 的直肠的流血的改进 1 在戴青的 1 堂功课以后治疗。四个病人减少了分级 0 的直肠的流血 1 在治疗的 2 堂功课以后。中部的后续时间是 10 个月(范围:6 24 ) 。在后续时期期间, 1 个病人经历了周期性的直肠的流血并且被管理,热门福尔马林轻拍,它控制了症状。没有治疗毒性被观察。结论戴青可以是为长期的出血性的放射直肠炎的安全、有效的治疗。 | Guangjin Yuan Qinghua Ke Xiaoyan Su Jiyuan Yang Ximing Xu | 2009 | The Chinese-German Journal of Clinical Oncology2009，8，2： | 2 |
| 15 | 脂代谢紊乱及脂质过氧化与结肠腺瘤恶变的关系(英文)显示文摘Objective:The aim of this study was to investigate lipid disorders and lipid peroxidation associated with the malignant transformation of colorectal adenoma.Methods:Analyses were based on data from 100 subjects with histologically confirmed adenomas(cases) and 50 adenoma-free control subjects,all of whom had colonoscopy.The subjects were divided into two groups:those with no adenoma and those with adenoma.According to subsite of adenomas the subjects with adenoma were divided into group of distal adenoma and group of proximal adenoma.According to histology of adenomas the subjects with adenoma were divided into group of villiform adenoma and group of tubular + tubulo-villous adenoma.Among the groups,the serum levels of triglyceride(TG),total cholesterol(TC),high density lipoprotein cholesterol(HDL-C),lowdensity lipoprotein cholesterol(LDL-C),and lipid peroxidation product malondialdehyde(MDA) were compared in all the patients.Results:Plasma total cholesterol and MDA level in group of adenomas were significantly higher than that in group of control subjects,but plasma HDL-C level was low in group of adenomas(P<0.05).Plasma total cholesterol and MDA levels were positively related to distal and villiform adenomas(P<0.05).Conclusion:The findings suggest that altered lipid metabolism may be differentially associated with colorectal adenomas. | Didi Tao Zhongyin Zhou Ximing Xu Hesheng Luo | 2011 | The Chinese-German Journal of Clinical Oncology2011，10，5： | 1 |
| 16 | 长链非编码RNA在肿瘤中的研究(英文)显示文摘Long non-coding RNAs(lncRNAs), gradually being paid attention to, have been found playing a critical role in regulation of cellular processes such as cell growth and apoptosis, what is more, accumulating evidence indicates that lncRNAs also play a critical role in regulation of carcinogenesis and cancer progression. Here, we will summarize the recent researches about some lncRNAs in the development of cancers, hoping to give a new view about the study in the mechanisms involved in carcinogenesis and tumor progression. | Tingting Yu Ximing Xu Yi Hu Junjian Deng Biao Chen Nana Han Meixia Zhang | 2014 | The Chinese-German Journal of Clinical Oncology2014，13，1： | 1 |
| 17 | Numb regulates vesicular docking for homotypic fusion of early endosomes via membrane recruitment of Monlb显示文摘 | Ximing Shao Yi Liu Qian Yu Zhihao Ding Wenyu Qian Lei Zhang Jianchao Zhang Nan Jiang Linfei Gui Zhiheng Xu Yang Hong Yifan Ma Yanjie Wei Xiaoqing Liu Changan Jiang Minyan Zhu Hongchang Li Huashun Li | 2016 | Cell Research2016，26，5： | 1 |
| 18 | Molecular targeted therapy in gastrointestinal cancer显示文摘 | Miao Xiang Ximing Xu | | 0，，： | 1 |
| 19 | Comparison of acid degumming and enzymatic degumming process for Silybum marianum seed oil显示文摘 | Lin Mei Liang Wang Qianqian Li Jiangnan Yu Ximing Xu | 2013 | Food Agric2013，，11： | 1 |
| 20 | High chan-nel-count comb filter based on chirped sampled fiber Bragggrating and phase shift 显示文摘 | Dai Yitang Chen Xiangfei Xu Ximing | 2005 | IEEE Photonics Technology Let-ters2005，17，5： | 1 |
您所在的机构暂未开通此部分的功能，请联系管理员