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| 1 | Characteristics of distribution of Mycobacterium tuberculosis lineages in China显示文摘The genotyping methods of Mycobacterium tuberculosis would dramatically improve our understanding of the molecular epidemiology of tuberculosis. 3,929 isolates, from a National Survey of Drug-Resistant Tuberculosis in 2007 in China, were successfully genotyped by large sequence polymorphisms and 15 loci variable number tandem repeats. We found that 2,905(2,905/3,929, 73.9%) cases belonged to Lineage 2, dominated in the east and central regions, 975 cases(975/3,929, 24.8%) were Lineage 4, highly prevailed in the west regions, and 36 and 13 cases were Lineage 3 and Lineage 1, respectively. We also explored the associations between lineages(Lineage 2 vs. Lineage 4) and clinical characteristics by logistic regression. For Lineage 2, the risk factors were Han-ethnicity population and fever. However, for Lineage 4, they were occupation(farmer), and degree of education(non-literate). Fully understanding of the distribution of Mycobacterium tuberculosis lineage and its risk factors would play a critical role in tuberculosis prevention, control, and treatment. | Haixia Chen Li He Chao Cai Jingyi Liu Junnan Jia Liang Ma Hairong Huang Lixia Wang Xumin Ni Jimin Gao Weimin Li | 2018 | Science China(Life Sciences)2018，61，6： | 7 |
| 2 | Study on Changes in the Characteristics of Key Carbohydrates in Wheat during the After-ripening Period显示文摘Three wheat cultivars—Zhengmai 366(ZM366), Zhoumai 27(ZM27) and Yangmai 15(YM15)—were used in the present study. After storage at 25?C for 15, 30, 45, 60, 90, 120 and 150 d, the crude starch, amylose, amylopectin, damaged starch and reducing sugar contents in wheat during the after-ripening period were measured. The results revealed(1) a marginal decrease in the total starch content;(2) no significant change in the amylopectin content; and(3) significant change in the amylose and reducing sugar contents during the after-ripening period in all the three wheat cultivars. Further, the amylose content in the three cultivars exhibited an increasing trend during the initial phase of the after-ripening period. Among the cultivars, ZM366 exhibited the highest increase,which stabilized after 90 d. The reducing sugar content showed a significant decrease during the initial phase of the after-ripening period with ZM366 showing the highest decrease, which attained stability after 90 d. The damaged starch content in all the three wheat cultivars exhibited a decreasing trend with ZM27 showing the highest decrease, which stabilized after 90 d. There were no changes in the forms of starch crystal among the three wheat cultivars after the after-ripening period, with only ZM366 showing a significant increase in starch crystallinity. The reducing sugar content in all the three wheat cultivars exhibited a decreasing trend during the initial phase of the after-ripening period, which attained stability at around day 90. | WU Junnan WANG Xiaoxi MA Sen | 2018 | Grain & Oil Science and Technology2018，1，1： | 2 |
| 3 | Controllable synthesis of hollow mesoporous silica spheres and application as support of nano-gold显示文摘 | Weihua Ma Tao Wang Junnan Shangguan Wei Jiang Qin Zhong | 2014 | Journal of Solid State Chemistry2014，，： | 1 |
| 4 | Application of steel fiber shotcrete technology in soft rock roadway support显示文摘Steel fiber shotcrete is widely used as a new composite material in water conservancy and hydropower projects,Highway Tunnel,Mine Roadway,etc.Support Works.by analyzing the characteristics of steel fiber shotcrete technology,with the actual project of Qinghai mine as background,Introduction Steel Fiber spray material selection for coagulation technology,ratio design,Construction equipment and spraying construction process and essentials.actually works well,can be class works like construction for reference. | daiju Narita Lu Lixing Ninzhidan Ma Junnan | 2014 | Concrete Technology2014，3，1： | 0 |
| 5 | 克隆整合影响严重光胁迫下第一分株世代的生长和沉积物特征但不影响后续分株世代的生长和沉积物特征显示文摘克隆整合通过缓冲环境压力和提高资源获取效率使克隆植物受益。然而,在一个克隆系统中,受益于克隆整合的连接分株世代的数量很少受到关注。我们进行了一个盆栽实验来评估沉水植物苦草(Vallisneria natans)克隆系统内的生理整合程度,该克隆系统由一个母株和3个依次连接的后代分株组成。母株生长在正常光照下,而后代分株被严重遮荫。母株与后代分株间的匍匐茎被切断或保持连接,但3个后代分株之间的连接仍然存在。与遮荫的后代分株连接时,苦草未遮荫的母株的光合能力显著增强,但其生物量积累大大减少。克隆整合显著增加了第一分株世代(相邻分株)的生物量积累和土壤的碳氮可用性、胞外酶活性和微生物生物量,但没有增加后续分株世代的这些特征。我们的结果表明,在严重光胁迫下,来自苦草母株的支持可能仅限于克隆系统中相邻的后代分株,这暗示着一个分株世代的效应。我们的结果有助于更好地理解克隆植物的层次结构和分段化。这些发现表明克隆整合程度在分株种群的生态相互作用中起着至关重要的作用。 | Xiaowen Ma Yang Li Weicheng Yu Junnan Wang Chunhua Liu | 2022 | Journal of Plant Ecology2022，15，5： | 0 |
| 6 | Studying bona fide SARS-CoV-2 biology in a BSL-2 biosafety environment using a split-virus-genome system显示文摘Dear Editor,Severe acute respiratory syndrome coronavirus 2(SARSCoV-2)was identified as the pathogen causing the coronavirus disease(COVID-19),which sometimes resulted in fatal pneumonia(Hu et al.,2021).SARS-CoV-2 is a biosafety level 3(BSL-3)pathogen,and the requirement for high containment conditions is a bottleneck for basic research on viral biology.To help general researchers who wish to study SARS-CoV-2 but do not have access to a BSL-3 facility,a system that(1)can mimic the real life cycle of the virus;(2)allows easy genetic manipulation;and(3)shows high biosafety in BSL-2 laboratory is required. | Yingxin Ma Guobin Mao Weishan Yang Guoqiang Wu Guoqiang Li Xiaoying Li Xin Lin Junnan Lu Shijun Zhao Wei Zhao Junbiao Dai Xian-En Zhang | 2022 | Science China(Life Sciences)2022，65，9： | 0 |
| 7 | Fabric characteristics of in situ sand with/without liquefaction verified by anisotropy of magnetic susceptibility显示文摘It is well known that fabric of sand may significantly affect mechanical behaviors and liquefaction resistance of sand.Various optical techniques are currently utilized to visualize the fabric,especially the distribution of the long axis of soil particles.However,none of these methods provides an ideal solution in laboratory tests and in situ observation.In this study,anisotropy of magnetic susceptibility(AMS)was first proposed as a convenient and efficient way to evaluate the liquefaction of clean sand.At first,investigations with scanning electron microscopy(SEM)and AMS were simultaneously conducted on two groups of soil specimens with different initial fabrics to verify the feasibility of the AMS technique.Then,80 in situ samples were collected to analyze the feature of liquefied and non-liquefied sand layers through AMS tests.It is clearly known from the test results that the natural sedimentary fabric was destroyed during liquefaction and the fabric anisotropy was greatly changed after liquefaction.The feasibility of evaluating soil fabric using the AMS survey was verified by the laboratory tests.Furthermore,the applicability of AMS in detecting liquefied layer in situ was confirmed for the first time. | Xueqian Ni Junnan Ma Hide Sakaguchi Feng Zhang | 2023 | Journal of Rock Mechanics and Geotechnical Engineering2023，15，5： | 0 |
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