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1Xa7, a new executor R gene that confers durable and broad-spectrum resistance to bacterial blight disease in rice显示文摘Bacterial blight(BB)is a globally devastating rice disease caused by Xanthomonas oryzae pv.oryzae(Xoo).The use of disease resistance(R)genes in rice breeding is an effective and economical strategy for the control of this disease.Nevertheless,a majority of R genes lack durable resistance for long-term use under global warming conditions.Here,we report the isolation of a novel executor R gene,Xa7,that confers extremely durable,broad-spectrum,and heat-tolerant resistance to Xoo.The expression of Xa7 was induced by incompatible Xoo strains that secreted the transcription activator-like effector(TALE)AvrXa7 or PthXo3,which recognized effector binding elements(EBEs)in the Xa7 promoter.Furthermore,Xa7 induction was faster and stronger under high temperatures.Overexpression of Xa7 or co-transformation of Xa7 with avrXa7 triggered a hypersensitive response in plants.Constitutive expression of Xa7 activated a defense response in the absence of Xoo but inhibited the growth of transgenic rice plants.In addition,analysis of over 3000 rice varieties showed that the Xa7 locuswas found primarily in the indica and aus subgroups.A variation consisting of an 11-bp insertion and a base substitution(G to T)was found in EBEAvrXa7 in the tested varieties,resulting in a loss of Xa7 BB resistance.Through a decade of effort,we have identified an important BB resistance gene and characterized its distinctive interaction with Xoo strains;these findings will greatly facilitate research on the molecular mechanism of Xa7-mediated resistance and promote the use of this valuable gene in breeding.Xifeng Chen Pengcheng Liu Le Mei Xiaoling He Long Chen Hui Liu Shurong Shen Zhandong Ji Xixi Zheng Yuchen Zhang Zhenyu Gao Dali Zeng Qian Qian Bojun Ma 2021Plant Communications2021,2,3:9
2Validity and reliability of Chinese version of Fatigue Impact Scale in cerebral infarction patients显示文摘BACKGROUND: Post-stroke fatigue has received much attention recently. Three evaluation scales are available,including the Fatigue Impact Scale (FIS). Yet none of these has been proven to be of use in the evaluation of psychological quality after post-stroke fatigue. OBJECTIVE: To introduce FIS into China,and to evaluate the validity and reliability of the Chinese Version in patients with cerebral infarction. DESIGN: Scale evaluation. SETTING: Department of Rehabilitation,Beijing Friendship Hospital,Capital Medical University. PARTICIPANTS: A total of 330 patients with cerebral infarction were selected from the Department of Neurology,Beijing Friendship Hospital,Capital Medical University from June 2005 to December 2006. All patients met diagnostic standards from the Fourth National Cerebrovascular Disease Academic Meeting of China Medical Association and were diagnosed with CT or MRI examination. Patients who were not willing to accept scale evaluation were excluded. METHODS: The English version of FIS was translated into Chinese and subsequently translated back to English again. FIS was given to the discharged patients,and they returned them upon completion. In-patients completed and immediately returned the FIS. Validity and reliability of the retrieved scales were ascertained with descriptive and inference analysis. MAIN OUTCOME MEASURES: Total scores and subscale scores of FIS. RESULTS: Out of 330 questionnaires,214 valid questionnaires were deemed valid in total. Six components were extracted in factor analysis,and the total cumulative contribution was 73.919%,which suggested the questionnaire was valid. After correlation analysis,6 components were divided into 3 subscales,including cognitive,physical,and social,which was the same as the English version. The Cronbach α value for the three subscales was 0.937 7,0.918 8,and 0.940 6,respectively (> 0.7). CONCLUSION: The reliability and validity of the Chinese version of FIS met with satisfaction and ap-peared to be adaptable to cerebral infarction patients in China.Chunwei Wu Zhandong Liu Yongbo Zhang Jimei Li Dexin Wang 2008Neural Regeneration Research2008,3,2:6
3Underwater Laser Welding/Cladding for High-performance Repair of Marine Metal Materials:A Review显示文摘With the rapid developments of marine resource exploitation,mounts of marine engineering equipment are settled on the ocean.When it is not possible to move the damaged equipment into a dry dock,welding operations must be performed in underwater environments.The underwater laser welding/cladding technique is a promising and advanced technique which could be widely applied to the maintenance of the damaged equipment.The present review paper aims to present a critical analysis and engineering overview of the underwater laser welding/cladding technique.First,we elaborated recent advances and key issues of drainage nozzles all over the world.Next,we presented the underwater laser processing and microstructural-mechanical behavior of repaired marine materials.Then,the newly developed powder-feeding based and wire-feeding based underwater laser direct metal deposition techniques were reviewed.The differences between the convection,conduction,and the metallurgical kinetics in the melt pools during underwater laser direct metal deposition and in-air laser direct metal deposition were illustrated.After that,several challenges that need to be overcame to achieve the full potential of the underwater laser welding/cladding technique are proposed.Finally,suggestions for future directions to aid the development of underwater laser welding/cladding technology and underwater metallurgical theory are provided.The present review will not only enrich the knowledge in the underwater repair technology,but also provide important guidance for the potential applications of the technology on the marine engineering.Guifang Sun Zhandong Wang Yi Lu Mingzhi Chen Kun Yang Zhonghua Ni 2022Chinese Journal of Mechanical Engineering2022,35,1:4
4Lacustrine Shale Oil Resource Potential of Es3L Sub-Member of Bonan Sag, Bohai Bay Basin, Eastern China显示文摘Following shale gas, shale oil has become another highlight in unconventional hydrocarbon exploration and development. A large amount of shale oil has been produced from a host of marine shale in North America in recent years. In China, lacustrine shale, as the main source rock of conventional oil and gas, should also have abundant oil retained in place. In this study, geochemical and geologic characteristics of lacustrine shale from Es_3~L sub-member in Bonan sag were characterized by using total organic carbon(TOC), Rock-Eval pyrolysis, X-ray diffraction, and ?log R method. The results show that the Es_3~L sub-member shale have TOC contents ranging from 0.5 wt.% to 9.3 wt.%, with an average of 2.9 wt.%. The organic matter is predominantly Type I kerogen, with minor amounts of Type II1 kerogen. The temperature of maximum yield of pyrolysate(Tmax) values ranges from 424 to 447 °C, with an average of 440 °C, and vitrinite reflectance(Ro%) ranges from 0.7% to 0.9%, indicating most of shales are thermally mature. The dominant minerals of Es_3~L shale in Bonan sag are carbonates(including calcite and dolomite), averaging 51.82 wt.%, and the second minerals are clay(mostly are montmorillonite-illite-mixed layer and illite) and quartz, averaging about 18 wt.%. Finally, its shale oil resources were evaluated by using the volumetric method, and the evaluation result shows that the shale oil resource is up to 5.94 billion tons, and mostly Class I resource. Therefore, the exploration of the lacustrine shale oil of Es_3~L in Bonan sag should be strengthened.Shuangfang Lu Wei Liu Min Wang Linye Zhang Zhentao Wang Guohui Chen Dianshi Xiao Zhandong Li Huiting Hu 2017Journal of Earth Science2017,28,6:4
5HAZ Characterization and Mechanical Properties of QP980-DP980 Laser Welded Joints显示文摘The QP980-DP980 dissimilar steel joints were fabricated by fiber laser welding.The weld zone(WZ)was fully martensitic structure,and heat-affected zone(HAZ)contained newly-formed martensite and partially tempered martensite(TM)in both steels.The supercritical HAZ of the QP980 side had higher microhardness(~549.5 Hv)than that of the WZ due to the finer martensite.A softened zone was present in HAZ of QP980 and DP980,the dropped microhardness of softened zone of the QP980 and DP980 wasΔ21.8 Hv andΔ40.9 Hv,respectively.Dislocation walls and slip bands were likely formed at the grain boundaries with the increase of strain,leading to the formation of low angle grain boundaries(LAGBs).Dislocation accumulation more easily occurred in the LAGBs than that of the HAGBs,which led to significant dislocation interaction and formation of cracks.The electron back-scattered diffraction(EBSD)results showed the fraction of LAGBs in sub-critical HAZ of DP980 side was the highest under different deformation conditions during tensile testing,resulting in the failure of joints located at the sub-critical HAZ of DP980 side.The QP980-DP980 dissimilar steel joints presented higher elongation(~11.21%)and ultimate tensile strength(~1011.53 MPa)than that of DP980-DP980 similar steel joints,because during the tensile process of the QP980-DP980 dissimilar steel joint(~8.2%and 991.38 MPa),the strain concentration firstly occurred on the excellent QP980 BM.Moreover,Erichsen cupping tests showed that the dissimilar welded joints had the lowest Erichsen value(~5.92 mm)and the peak punch force(~28.4 kN)due to the presence of large amount of brittle martensite in WZ and inhomogeneous deformation.Junliang Xue Peng Peng Wei Guo Mingsheng Xia Caiwang Tan Zhandong Wan Hongqiang Zhang Yongqiang Li 2021Chinese Journal of Mechanical Engineering2021,34,4:3
6Synthesis and biological evaluation of novel tricyclic matrinic derivatives as potential anti-filovirus agents显示文摘Twenty-six novel tricyclic sophoridinic and matrinic derivatives containing a common chlorinated benzene fragment were designed, synthesized and evaluated for their anti-ebolavirus(EBOV)activities. Structure–activity relationship analysis indicated:(i) 12 N-dichlorobenzyl motif was beneficial for the activity;(ii) the chiral configuration at C5 atom might not affect the activity much. Among the target compounds, compound 7d exhibited the most potent potency against EBOV with an IC_(50) value of 5.29 μmol/L and an SI value of over 37.8. Further in vivo anti-EBOV assay of 7d identified its high effectiveness, and in vivo anti-MARV assay of 7d suggested its inspiring broad-spectrum anti-filovirus activity. The results provided powerful information on further strategic optimization and development of this kind of compounds against filoviruses.Xin Zhang Qiang Liu Qianqian Li Yinghong Li Zhandong Liu Hongbin Deng Sheng Tang Yanxiang Wang Youchun Wang Danqing Song 2018Acta Pharmaceutica Sinica B2018,8,4:2
7Experimental and kinetic modeling study of the low- and intermediate-temperature oxidation of dimethyl ether显示文摘Zhandong Wang Xiaoyuan Zhang Lili Xing Lidong Zhang Friederike Herrmann Kai Moshammer Fei Qi Katharina Kohse-H?inghaus 2014Combustion and Flame2014,,:1
8Purification of yellow phosphorus tail gas for the removal of PH 3 on the spot with flower-shaped CuO/AC显示文摘Ren Zhandong Quan Shanshan Zhu Yuchan 2015RSC Adv2015,,29:1
9Evalu-ation of ecological restoration through vegetation patterns inthe lower Tarim River,China with MODIS NDVI data显示文摘Sun Zhandong Chang Nibin Opp Christian 2011Ecological Informatics2011,6,2:1
10Experimental and modeling study of the effects of adding oxygenated fuels to premixed n -heptane flames显示文摘Gen Chen Wu Yu Jin Fu Jun Mo Zuohua Huang Jiuzhong Yang Zhandong Wang Hanfeng Jin Fei Qi 2012Combustion and Flame2012,,7:1
11Effects of combined Chinese drugs and chemotherapy in treating advanced non-smaU cell lung cancer显示文摘CHEN Yanzhi LI Zhandong GAO Fei 2010Chinese Journal of Integrative Medicine2010,15,6:1
12Experimental and kinetic modeling study of methyl butanoate and methyl butanoate/methanol flames at different equivalence ratios and C/O ratios显示文摘Wu Yu Gen Chen Zuohua Huang Zhaoyang Chen Jing Gong Jiuzhong Yang Zhandong Wang Fei Qi 2011Combustion and Flame2011,,1:1
13Modeling of the height–diameter relationship using an allometric equation model:a case study of stands of Phyllostachys edulis显示文摘Understanding the relationship between tree height(H) and diameter at breast height(D) is vital to forest design, monitoring and biomass estimation. We developed an allometric equation model and tested its applicability for unevenly aged stands of moso bamboo forest at a regional scale. Field data were collected for 21 plots. Based on these data, we identified two strong power relationships: a correlation between the mean bamboo height(Hm) and the upper mean H(Hu), and a correlation between the mean D(Dm) and the upper mean D(Du). Simulation results derived from the allometric equation model were in good agreement with observed culms derived from the field data for the 21 stands,with a root-mean-square error and relative root-mean-square error of 1.40 m and 13.41 %, respectively. These results demonstrate that the allometric equation model had a strong predictive power in the unevenly aged stands at a regional scale. In addition, the estimated average height–diameter(H–D) model for South Anhui Province was used to predict H for the same type of bamboo in Hunan Province based on the measured D, and the results were highly similar. The allometric equation model has multiple uses at the regional scale, including the evaluation of the variation in the H–D relationship among regions. The model describes the average H–D relationship without considering the effects caused by variation in site conditions, tree density and other factors.Xuan Gao Zhandong Li Hongmei Yu Zehui Jiang Chen Wang Yu Zhang Lianghua Qi Lei Shi 2016Journal of Forestry Research2016,27,2:1
14Impacts and Implications of Major Changes Caused by the Three Gorges Dam in the Middle Reaches of the Yangtze River, China显示文摘Zhandong Sun Qun Huang Christian Opp Thomas Hennig Ulf Marold 2012Water Resources Management2012,,12:1
15Existence and uniqueness of fixed points for mixed monotone operators with applications显示文摘Yuexiang Wu Zhandong Liang 2006Nonlinear Analysis2006,,10:1
16Controllable printing of large-scale compact perovskite films for flexible photodetectors显示文摘Perovskite materials are promising candidates for the next generation of wearable optoelectronics.However,due to uncontrolled crystallization and the natural brittle property of crystals,it remains a great challenge to fabricate large-scale compact and tough perovskite film.Here we report a facile method to print large-scale perovskite films with high quality for flexible photodetectors.By introducing a soluble polyethylene oxide(PEO)layer during the inkjet printing process,the nucleation and crystal growth of perovskite is well controlled.Perovskite films can be easily printed in large scale and patterned in high resolution.Moreover,this method can be extended to various kinds of perovskite materials,such as MAPbb(MA=methylammonium),MA_(3)Sb_(2)l_(9),and(BA)_(2)PbBr_(4)(BA=benzylammonium).The printed perovskite films show high quality and excellent mechanical performance.The photodetectors based on the MAPbBr3 perovskite films show a responsivity up to -1,036 mAA/V and maintain over 96.8%of the initial photocurrent after 15,000 consecutive bending cycles.This strategy provides a facile approach to prepare large-scale flexible perovskite films.It opens up new opportunities for the fabrication of diverse wearable optoelectronic devices.Zhenkun Gu Ying Wang Shiheng Wang Ting Zhang Rudai Zhao Xiaotian Hu Zhandong Huang Meng Su Qun Xu Lihong Li Yiqiang Zhang Yanlin Song 2022Nano Research2022,15,2:1
17Experimental and kinetic modeling study of methyl butanoate and methyl butanoate/methanol flames at different equivalence ratios and C/O ratios显示文摘Wu Yu Gen Chen Zuohua Huang Zhaoyang Chen Jing Gong Jiuzhong Yang Zhandong Wang Fei Qi 2011Combustion and Flame2011,,1:1
18A class of concave operators with appli- cation 显示文摘Liang Zhandong 2008Nonlinear Analysis2008,69,9:1
19Antithrombin gene Arg197Stop mutation-associated venous sinus thrombosis in a Chinese family显示文摘This study sought to elucidate the genetic correlation of cerebral venous sinus thrombosis caused by a hereditary antithrombin deficiency in a Chinese family,at the genetic and protein levels.A nonsense mutation from C to T on locus 6431 in exon 3B of the antithrombin gene was observed,leading to an arginine (CGA) to stop codon (TGA) change in the protein.This is the first report of this mutation in China.Ineffective heparin therapy in the propositus patient is associated with a lack of heparin binding sites after antithrombin gene mutation.Characteristic low intracranial pressure in the acute phase might be specific to this patient with cerebral venous sinus thrombosis.Ang Li Tianhui Liu Zhandong Liu Jimei Li Chunling Zhang Jun Chen Jinmei Sun Yanfei Han Lili Wang Dexin Wang Qiming Xue Baoen Wang 2011Neural Regeneration Research2011,6,20:1
20Fixed point theorems for a class of mixed monotone operators显示文摘Liang Zhandong Zhang Lingling Li Shengjia 2003Z Anal Anwendungen2003,22,3:1
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