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| 1 | Overexpression of PGA37/MYB118 and MYB115 promotes vegetative-to-embryonic transition in Arabidopsis显示文摘从 non-germline 房间的体的胚胎的形成对更高的植物唯一并且能被操作在许多种类。以前的研究表明包括 WUSCHEL (WUS )/PLANT 生长 ACTIVATOR6 (PGA6 ) ,几 Arabidopsis 基因的 overexpression 纵容繁荣,叶状的 COTYLEDON1 (LEC1 ) ,和 LEC2,能引起 vegetative-to-embryonic 转变或体的胚胎的形成。这里,我们报导那在 Arabidopsis PGA37 基因的一个 gain-of-function 变化,编码 MYB118 抄写因素,导致的 vegetative-to-embryonic 转变,从根将生物的活组织移植于培养基中培养的体的胚胎的形成,和提高的 LEC1 表示水平。两倍变异的分析证明 WUS 没被 PGA37/MYB118 为体的胚胎的正式就职要求。另外, MYB115 的 overexpression, PGA37/MYB118 的一个相当或相同的事物,引起了象 pga37 一样显型。两倍异种没显示出的 myb118 myb115 明显的发展畸形。一起,这些结果建议 PGA37/MYB118 和 MYB115 支持 vegetative-to-embryonic 转变,通过 WUS 的一个发信号的小径独立人士。 | Xingchun wang Qi-Wen Niu Chong Teng Chao Li Jinye Mu Nam-Hai Chua Jianru Zuo | 2009 | Cell Research2009,19,2: | 30 |
| 2 | Rapid generation of genetic diversity by multiplex CRISPR/Cas9 genome editing in rice显示文摘The clustered regularly interspaced short palindromic repeats(CRISPR)-associated endonuclease 9(CRISPR/Cas9) system has emerged as a promising technology for specific genome editing in many species. Here we constructed one vector targeting eight agronomic genes in rice using the CRISPR/Cas9 multiplex genome editing system. By subsequent genetic transformation and DNA sequencing, we found that the eight target genes have high mutation efficiencies in the T_0 generation. Both heterozygous and homozygous mutations of all editing genes were obtained in T_0 plants. In addition, homozygous sextuple, septuple, and octuple mutants were identified. As the abundant genotypes in T_0 transgenic plants, various phenotypes related to the editing genes were observed. The findings demonstrate the potential of the CRISPR/Cas9 system for rapid introduction of genetic diversity during crop breeding. | Lan Shen Yufeng Hua Yaping Fu Jian Li Qing Liu Xiaozhen Jiao Gaowei Xin Junjie Wang Xingchun Wang Changjie Yan Kejian Wang | 2017 | Science China(Life Sciences)2017,60,5: | 11 |
| 3 | Foxtail millet:nutritional and eating quality,and prospects for genetic improvement显示文摘Foxtail millet is a minor yet important crop in some areas of the world,particularly northern China.It has strong adaptability to abiotic stresses,especially drought,and poor soil.It also has high nutritional value.Foxtail millet is rich in essential amino acids,fatty acids and minerals,and is considered to be one of the most digestible and non-allergenic grains available and has significant importance for human health.Given foxtail millet’s ability to adapt to abiotic stresses associated with climate change,it is more important than ever to develop breeding strategies that facilitate the increasing demand for high quality grain that better satisfies consumers.Here we review research on foxtail millet quality evaluation,appearance,cooking and eating quality at the phenotypic level.We review analysis of the main nutrients in foxtail millet,their relationships and the biochemical and genetic factors affecting their accumulation.In addition,we review past progress in breeding this regionally important crop,outline current status of breeding of foxtail millet,and make suggestions to improve grain quality. | Lu HE Bin ZHANG Xingchun WANG Hongying LI Yuanhuai HAN | 2015 | Frontiers of Agricultural Science and Engineering2015,2,2: | 8 |
| 4 | Characterization and Fine Mapping of a Novel Rice Narrow Leaf Mutant nal9显示文摘A narrow leaf mutant was isolated from transgenic rice(Oryza sativa L.)lines carrying a T-DNA insertion.The mutant is characterized by narrow leaves during its whole growth period,and was named nal9(narrow leaf 9).The mutant also has other phenotypes,such as light green leaves at the seedling stage,reduced plant height,a small panicle and increased tillering.Genetic analysis revealed that the mutation is controlled by a single recessive gene.A hygromycin resistance assay showed that the mutation was not caused by T-DNA insertion,so a map-based cloning strategy was employed to isolate the nal9 gene.The mutant individuals from the F2generations of a cross between the nal9 mutant and Longtepu were used for mapping.With 24 F2mutants,the nal9 gene was preliminarily mapped near the marker RM156 on the chromosome 3.New INDEL markers were then designed based on the sequence differences between japonica and indica at the region near RM156.The nal9 gene was fnally located in a 69.3 kb region between the markers V239B and V239G within BAC OJ1212_C05 by chromosome walking.Sequence and expression analysis showed that an ATP-dependent Clp protease proteolytic subunit gene(ClpP)was most likely to be the nal9 gene.Furthermore,the nal9 mutation was rescued by transformation of the ClpP cDNA driven by the 35S promoter.Accordingly,the ClpP gene was identifed as the NAL9 gene.Our results provide a basis for functional studies of NAL9 in future work. | Wei Li Chao Wu Guocheng Hu Li Xing Wenjing Qian Huamin Si Zongxiu Sun Xingchun Wang Yaping Fu Wenzhen Liu | 2013 | Journal of Integrative Plant Biology2013,55,11: | 8 |
| 5 | Metallogenic model and prognosis of the Shuiyindong super-large strata-bound Carlin-type gold deposit, southwestern Guizhou Province, China显示文摘The Shuiyindong deposit is one of the largest (more than 100 tonnes of Au) and highest grade (more than 7×10-6-10×10-6), strata-bound Carlintype gold deposits in southwestern Guizhou Province, China. The deposit is controlled by both structure and favorable lithology. It is situated near the axis of the striking Huijiabao anticline and is hosted in bioclastic limestone of the Permian Longtan Formation. Gold mineralization occurred under low temperature with Th of 220℃± and is closely associated with decarbonation, silicification, sulfidation and dolomitization. The deposit has a characteristic elemental assemblage of Au-As-Hg-Tl. Studies of geochemistry and isotope compositions indicated that the ore-bearing materials and fluids of the gold deposit mainly originated from a plutonic source, and possess a mixing feature with the strata matter during transportation from mantle to crust. Fluid inclusions in vein quartz from the gold deposit are rich in volatile flux, indicating that metallogenic fluid is an overpres-sured one. The activity and geothermal state of the Earth's crust in the long period of time are favorable for the formation of overpressured fluids in a large area, and extensive structures would drive the fluids into ore-forming sys-tem and make gold deposits formed. The complexity of structural movement in the upper crust of southwestern Guizhou Province resulted in complicated gold mineralization. Through metallogenic prognosis and exploration, the proven reserves of the deposit increased by tens of tonnes of Au and the deposit has become a super-large strata-bound Carlin-type gold deposit. | ZHANG Yu XIA Yong SU Wenchao TAO Yan ZHANG Xingchun LIU Jianzhong DENG Yiming | 2010 | Chinese Journal Of Geochemistry2010,29,2: | 8 |
| 6 | A novel two-layered optical satellite network of LEO/MEO with zero phase factor显示文摘Optical satellite communication has advantages over the RF satellite communication in capacity, speed, secrecy and anti-interference.Space information superhighway composed of GEO/MEO/LEO satellites which are linked by optical inter-satellite links(OISL) would play important roles in communication, navigation, martial recon, remote sensing and deep space exploration.A novel LEO/MEO two-layered optical satellite network with global coverage is designed with the street-of-coverage technique.The layer of LEO satellites is the walker-delta constellation with zero phase factor and has the quasi-stable logical structure of Mesh.Equatorial and polar orbit satellites constitute the layer of MEO satellite, which can cover LEO layer effectively.Rising satellites of the system can provide 99.9% of coverage for the whole globe and 100% for China averagely.The network can provide a minimum elevation angle at 21 ? with single-satellite visibility for China, and at 16 ? with the dual-satellite visibility.Simulation results of the inter-satellite links show LEO constellation of zero phase factor outperforms non-zero phase factor constellations in azimuth angle, elevation angle and distance, which is very fit for the OISL.Simulation results of the communication performance indicate a little difference between short wave band and long wave band at low communication speed(several Gbit/s);however, the wave band at 1550 nm is a better choice at high communication speed(100 Gbit/s). | LI YongJun , WU JiLi, ZHAO ShangHong, MENG Wen, MA LiHua, SHI Lei, CHU XingChun, HOU Rui & LI Tian Telecommunication Engineering Institute, Air Force Engineering University, Xi’an 710077, China | 2010 | Science China(Information Sciences)2010,53,6: | 8 |
| 7 | Multi-omics analyses of 398 foxtail millet accessions reveal genomic regions associated with domestication,metabolite traits,and antiinflammatory effects显示文摘Foxtail millet(Setaria italica),which was domesticatedfromthewild speciesgreenfoxtail(Setaria viridis),isa richsource of phytonutrientsfor humans.To evaluate how breeding changed themetabolome offoxtail millet grains,we generated and analyzed the datasets encompassing the genomes,transcriptomes,metabolomes,and anti-inflammatory indices from 398 foxtail millet accessions.We identified hundreds of common variants that influence numerous secondary metabolites.We observed tremendous differences in natural variations of the metabolites and their underlying genetic architectures between distinct sub-groups of foxtail millet.Furthermore,we found that the selection of the gene alleles associated with yellow grains led to altered profiles of metabolites such as carotenoids and endogenous phytohormones.Using CRiSPR-mediated genome editing wevalidated the function of PHYTOENE SYNTHASE1(PSY1)gene in affecting milletgrain colorand quality.Interestingly,our in vitro cell inflammation assays showed that 83 metabolites in millet grains have anti-inflammatory effects.Taken together,ourmulti-omics study illustrates how the breeding history of foxtail millet has shaped its metabolite profile.The datasets we generated in this study also provide important resources for further understanding how millet grain quality is affected by different metabolites,laying the foundations for future millet genetic research and metabolome-assisted improvement. | Xukai Li Jianhua Gao Jingyi Song Kai Guo Siyu Hou Xingchun Wang Qiang He Yanyan Zhang Yakun Zhang Yulu Yang Jiaoyan Tang Hailang Wang Staffan Persson Mingquan Huang Lishuai Xu Linlin Zhong Dongqin Li Yongming Liu Hua Wu Xianmin Diao Peng Chen Xiaowen Wang Yuanhuai Han | 2022 | Molecular Plant2022,15,8: | 8 |
| 8 | Algorithm for Calculating Torque Base in Vehicle Traction Control System显示文摘Existing research on the traction control system(TCS) mainly focuses on control methods, such as the PID control, fuzzy logic control, etc, aiming at achieving an ideal slip rate of the drive wheel over long control periods. The initial output of the TCS (referred to as the torque base in this paper), which has a great impact on the driving performance of the vehicle in early cycles, remains to be investigated. In order to improve the control performance of the TCS in the first several cycles, an algorithm is proposed to determine the torque base. First, torque bases are calculated by two different methods, one based on states judgment and the other based on the vehicle dynamics. The confidence level of the torque base calculated based on the vehicle dynamics is also obtained. The final torque base is then determined based on the two torque bases and the confidence level. Hardware-in-the-loop(HIL) simulation and vehicle tests emulating sudden start on low friction roads have been conducted to verify the proposed algorithm. The control performance of a PID-controlled TCS with and without the proposed torque base algorithm is compared, showing that the proposed algorithm improves the performance of the TCS over the first several cycles and enhances about 5% vehicle speed by contrast. The proposed research provides a more proper initial value for TCS control, and improves the performance of the first several control cycles of the TCS. | LI Hongzhi LI Liang SONG Jian WU Kaihui QIAO Yanjuan LIU Xingchun XIA Yongguang | 2012 | Chinese Journal of Mechanical Engineering2012,25,6: | 4 |
| 9 | Validation of the DNATyper^(TM)15 PCR Genotyping System for Forensic Application显示文摘We describe the optimization and validation of the DNATyper^(TM)15 multiplex polymerase chain reaction(PCR)genotyping system for autosomal short tandem repeat(STR)amplification at 14 autosomal loci(D6S1043,D21S11,D7S820,CSF1PO,D2S1338,D3S1358,D13S317,D8S1179,D16S539,Penta E,D5S818,vWA,D18S51,and FGA)and amelogenin,a sex‑determining locus.Several DNATyper^(TM)15 assay variables were optimized,including hot start Taq polymerase concentration,Taq polymerase activation time,magnesium concentration,primer concentration,annealing temperature,reaction volume,and cycle number.The performance of the assay was validated with respect to species specificity,sensitivity to template concentration,stability,accuracy,influence of the DNA extraction methods,and the ability to genotype the mixture samples.The performance of the DNATyper^(TM)15 system on casework samples was compared with that of two widely used STR amplification kits,Identifiler^(TM)(Applied Biosystems,Carlsbad,CA,USA)and PowerPlex 16®(Promega,Madison,WI,USA).The conditions for PCR‑based DNATyper^(TM)15 genotyping were optimized.Contamination from forensically relevant nonhuman DNA was not found to impact genotyping results,and full profiles were generated for all the reactions containing≥0.125 ng of DNA template.No significant difference in performance was observed even after the DNATyper^(TM)15 assay components were subjected to 20 freeze‑thaw cycles.The performances of DNATyper^(TM)15,Identifiler^(TM),and PowerPlex 16®were comparable in terms of sensitivity and the ability to genotype the mixed samples and case‑type samples,with the assays giving the same genotyping results for all the shared loci.The DNA extraction methods did not affect the performance of any of the systems.Our results demonstrate that the DNATyper^(TM)15 system is suitable for genotyping in both forensic DNA database work and case‑type samples. | Jian Ye Chengtao Jiang Xingchun Zhao Le Wang Caixia Li Anquan Ji Li Yuan Jing Sun Shuaifeng Chen | 2015 | Journal of Forensic Science and Medicine2015,1,1: | 3 |
| 10 | Petrogenesis of the Langdu High-K Calc-Alkaline Intrusions in Yunnan Province: Constraints from Geochemistry and Sr-Nd Isotopes显示文摘The Langdu high-K calc-alkaline intrusions are located in the Zhongdian area, which is the southern part of the Yidun island arc. These intrusive rocks consist mainly of monzonite porphyry, granodiorite, and diorite porphyry. The K2O content of majority of these rocks is greater than 3%, and, in the K2O-SiO2 diagram, all the samples fall into the high-K calc-alkaline to shoshonitic fields. They are enriched in light rare earth elements (LREEs) and depleted in heavy rare earth elements (HREEs; LaN/YbN = 14.3-21.2), and show slightly negative Eu anomalies (δEu = 0.77-1.00). These rocks have high K, Rb, Sr, and Ba contents; moderate to high enrichment of compatible elements (Cr = 36.7-79.9 ppm, Co = 9.6-16.4 ppm, and MgO = 2.2%-3.4%); low Nb, Ta, and Ti contents, and characteristic of low high field strength elements(HFSEs) versus incompatible elements ratios (Nb/Th = 0.75, Nb/La = 0.34) and incompatible elements ratios (Nb/U = 3.0 and Ce/Pb = 5.1, Ba/Rb = 12.0). These rocks exhibit restricted Sr and Nd isotopic compositions, with (87Sr/86Sr) i values ranging from 0.7044 to 0.7069 and εNd(t) values from -2.8 to -2.2. The Sr-Nd isotope systematic and specific trace element ratios suggest that Langdu high-K calc-alkaline intrusive rocks derived from a metasomatized mantle source. The unique geochemical feature of intrusive rocks can be modeled successfully using different members of a slightly enriched mantle, a slab-derived fluid, and terrigenous sediments. It can be inferred that the degree of partial melting and the presence of specific components are temporally related to the tectonic evolution of the Zhongdian island arc. Formation of these rocks can be explained by the various degrees of melting within an ascending region of the slightly enriched mantle, triggered by the subduction of the Garzê-Litang ocean, and an interaction between the slab-derived fluid and the terrigenous sediments. | REN Tao ZHANG Xingchun HAN Runsheng MA Meijuan | 2013 | Acta Geologica Sinica(English Edition)2013,87,2: | 3 |
| 11 | Robust and efficient direct multiplex amplification method for large-scale DNA detection of blood samples on FTA cards显示文摘Deoxyribonucleic acid (DNA) damage arising from radiations widely occurred along with the development of nuclear weapons and clinically wide application of computed tomography (CT) scan and nuclear medicine. All ionizing radiations (X-rays, γ-rays, alpha particles, etc.) and ultraviolet (UV) radiation lead to the DNA damage. Polymerase chain reaction (PCR) is one of the most wildly used techniques for detecting DNA damage as the amplification stops at the site of the damage. Improvements to enhance the efficiency of PCR are always required and remain a great challenge. Here we establish a multiplex PCR assay system (MPAS) that is served as a robust and efficient method for direct detection of target DNA sequences in genomic DNA. The establishment of the system is performed by adding a combination of PCR enhancers to standard PCR buffer. The performance of MPAS was demonstrated by carrying out the direct PCR amplification on 1.2 mm human blood punch using commercially available primer sets which include multiple primer pairs. The optimized PCR system resulted in high quality genotyping results without any inhibitory effect indicated and led to a full-profile success rate of 98.13%. Our studies demonstrate that the MPAS provides an efficient and robust method for obtaining sensitive, reliable and reproducible PCR results from human blood samples. | JIANG Bowei XIANG Fawei ZHAO Xingchun WANG Lihua FAN Chunhai | 2013 | Nuclear Science and Techniques2013,24,3: | 3 |
| 12 | Constraints of molybdenite Re-Os and scheelite Sm-Nd ages on mineralization time of the Kukaazi Pb-Zn-Cu-W deposit, Western Kunlun, NW China显示文摘The Kukaazi Pb-Zn-Cu-W polymetallic deposit, located in the Western Kunlun orogenic belt, is a newly discovered skarn-type deposit. Ore bodies mainly occur in the forms of lenses and veins along beddings of the Mesoproterozoic metamorphic rocks. Three ore blocks, KⅠ,KⅡ, and KⅢ, have been outlined in different parts of the Kukaazi deposit in terms of mineral assemblages. The KⅠ ore block is mainly composed of chalcopyrite, scheelite,pyrrhotite, sphalerite, galena and minor pyrite, arsenopyrite,and molybdenite, whereas the other two ore blocks are made up of galena, sphalerite, magnetite and minor arsenopyrite and pyrite. In this study, we obtained a molybdenite isochron Re–Os age of 450.5 ± 6.4 Ma(2σ,MSWD = 0.057) and a scheelite Sm–Nd isochron age of 426 ± 59 Ma(2σ, MSWD = 0.49) for the KⅠ ore block.They are broadly comparable to the ages of granitoid in the region. Scheelite grains from the KⅠ ore block contain high abundances of rare earth elements(REE, 42.0–95.7 ppm)and are enriched in light REE compared to heavy REE, with negative Eu anomalies(δEu = 0.13–0.55). They display similar REE patterns and Sm/Nd ratios to those of the coeval granitoids in the region. Moreover, they also have similar Sr and Nd isotopes [ ^(87)Sr/ ^(86)Sr = 0.7107–0.7118;ε_(Nd)(t) =-4.1 to-4.0] to those of such granitoids, implying that the tungsten-bearing fluids in the Kukaazi deposit probably originate from the granitic magmas. Our results first defined that the Early Paleozoic granitoids could lead to economic Mo–W–(Cu) mineralization at some favorable districts in the Western Kunlun orogenic belt and could be prospecting exploration targets. | Chengbiao Leng Yuhui Wang Xingchun Zhang Jianfeng Gao Wei Zhang Xinying Xu | 2018 | Acta Geochimica2018,37,1: | 3 |
| 13 | Control measures during the COVID-19 outbreak reduced the transmission of hand,foot,and mouth disease显示文摘Control measures during the coronavirus disease 2019(COVID-19)outbreak may have limited the spread of infectious diseases.This study aimed to analyze the impact of COVID-19 on the spread of hand,foot,and mouth disease(HFMD)in China.A mathematical model was established to fit the reported data of HFMD in six selected cities in China's Mainland from 2015 to 2020.The absolute difference(AD)and relative difference(RD)between the reported incidence in 2020,and simulated maximum,minimum,or median incidence of HFMD in 2015-2019 were calculated.The incidence and R effof HFMD have decreased in six selected cities since the outbreak of COVID-19,and in the second half of 2020,the incidence and R effof HFMD have rebounded.The results show that the total attack rate(TAR)in 2020 was lower than the maximum,minimum,and median TAR fitted in previous years in six selected cities(except Changsha City).For the maximum,median,minimum fitted TAR,the range of RD(%)is 42·20-99·20%,36·35-98·41%48·35-96·23%(except Changsha City)respectively.The preventive and control measures of COVID-19 have significantly contributed to the containment of HFMD transmission. | Yan Niu Li Luo Jia Rui Shiting Yang Bin Deng Zeyu Zhao Shengnan Lin Jingwen Xu Yuanzhao Zhu Yao Wang Meng Yang Xingchun Liu Tianlong Yang Weikang Liu Peihua Li Zhuoyang Li Chan Liu Jiefeng Huang Tianmu Chen | 2021 | Journal of Safety Science and Resilience2021,2,2: | 3 |
| 14 | Effectiveness of Interventions to Control Transmission of Reemergent Cases of COVID-19--Jilin Province,China,2020显示文摘What is already known about this topic?COVID-19 has a high transmissibility calculated by mathematical model.The dynamics of the disease and the effectiveness of intervention to control the transmission remain unclear in Jilin Province,China.What is added by this report?This is the first study to report the dynamic characteristics and to quantify the effectiveness of interventions implemented in the second outbreak of COVID-19 in Jilin Province,China.The effective reproduction number of the disease before and after May 10 was 4.00 and p<0.01,respectively.The combined interventions reduced the transmissibility of COVID-19 by 99% and the number of cases by 98.36%.What are the implications for public health practice?The findings of this study would add data on the transmission of COVID-19 and provide evidence to prepare the second outbreak transmission of the disease in other areas of China even in many other countries. | Qinglong Zhao Meng Yang Yao Wang Laishun Yao Jianguo Qiao Zhiyong Cheng Hanyin Liu Xingchun Liu Yuanzhao Zhu Zeyu Zhao Jia Rui Tianmu Chen | 2020 | China CDC weekly2020,2,34: | 2 |
| 15 | On the Mechanism of Transformation fromPrimary Ores into Oxidized Ores in FinelyDisseminated Gold Deposits显示文摘This paper, taking the finely disseminated gold deposits in southwestern Guizhou and northwestern Guangxi as examples, discusses the difference between the occurrence of primary ores and that of oxidized ores, analyzes the occurrence mechanism in terms of crystallochemistry and geochemistry, and especially studies the chemical model for supergene leaching transformation of clay minerals in the two types of ores. This study proposes a new idea for dressing and smelting technology for primary gold ores. | LIU Xianfan NI Shijun JIN Jingfu LU Qiuxia ZHANG Xingchun | 1998 | Acta Geologica Sinica(English Edition)1998,72,3: | 2 |
| 16 | Deletion of the Initial 45 Residues of ARR18 Induces Cytokinin Response in Arabidopsis显示文摘植物荷尔蒙细胞激动素在植物生长和开发的各种各样的方面起重要作用。细胞激动素发信号被类似于细菌的二部件的系统的 multistep phosphorelay 调停。在发信号的细胞激动素的结束的 Type-B ARR 谎言,典型地调停产量反应。然而, type-B ARR 怎么响应细胞激动素被调整,仍然是不清楚的。典型 type-B ARR 包含一个 N 终端接收装置领域和一个 C 终端受动器领域。在这研究,我们由 overexpressing 执行了染色体野的比较分析七代表性的 type-B ARR 的完整的长度和 C 终端受动器领域。我们的结果显示了没有细胞激动素的增加,受动器领域引起短主要的根和短胚轴的 C 终端的那 overexpression,建议在受动器领域的活动的接收装置领域的禁止的角色是在 type-B ARR 的普通机制。调查接收装置领域怎么禁止受动器领域的活动,我们执行了删除分析。我们发现了那删除起始 ARR18 (从 N 终点的 45 残余) 的 45 残余由直接导致细胞激动素引起多种的生长缺点应答的基因。一起,我们的结果建议起始 45 残余为到在 ARR18 的受动器领域的接收装置领域的禁止的角色是批评的。 | Yan Liang Xingchun Wang Sulei Hong Yansha Li Jianru Zuo | 2012 | Journal of Genetics and Genomics2012,39,1: | 2 |
| 17 | Application of TEM Based on HTS SQUID Magnetometer in Deep Geological Structure Exploration in the Baiyun Gold Deposit,NE China显示文摘Exploration of deep mineralization,particularly where the mineralization of interest is covered by a conductive overburden,is still a challenge for the conventional transient electromagnetic(TEM)method,which measures TEM response using induction coils as the sensor.However,sensors such as fluxgate and superconductive quantum interfere device(SQUID)magnetometers can measure the B-field directly,which can provide more reliable deep information for mineralization exploration.In this paper,we report on the research and development of our newly developed high-temperature su-perconductor(HTS)SQUID magnetometer,which is cooled by liquid nitrogen at 77 K,and its applica-tion in TEM measurement for deep exploration in a gold deposit in China.This improved SQUID magnetometer version has a good performance with noise(60 fT/√Hz),slew rate(0.8 mT/S),dynamic range(100 dB),sensitivity(6.25 mV/nT),and bandwidth(DC-20 kHz).To find deep and peripheral ore in the Baiyun gold deposit located in Liaoning Province,NE China,both the SQUID magnetometer and induction coil were used for TEM data acquisition.Results show that TEM can detect the distribution of local strata and the faults contained within them.Results also indicate that the SQUID magnetome-ter has superior response performance for response over geological targets with slower decay time when compared to the induction coil signals.The SQUID magnetometer is more sensitive at observing the induced-polarization effect which is closely related to the ore-controlling faults. | Junjie Wu Xiaodong Chen Yi Yang Qingquan Zhi Xingchun Wang Jie Zhang Xiaohong Deng Yi Zhao Yue Huang | 2021 | Journal of Earth Science2021,32,1: | 2 |
| 18 | The Arabidopsis BE1 Gene,Encoding a Putative Glycoside Hydrolase Localized in Plastids,Plays Crucial Roles during Embryogenesis and Carbohydrate Metabolism显示文摘Carbohydrate metabolism is central to plant growth and development. However, little is known about its role in embryogenesis. Here, we report the characterization of multiple alleles of the BRANCHING ENZYME1 (BE1) gene (also known as EMB2729). The weak allele of be1-3, characterized by positional cloning, carries a single-nucleotide substitution in an exon-intron junction and shows various develop- mental defects during post-germination growth. This mutation causes a reduced level of BE1 mRNA that, likely generated from cryptically spliced pre-mRNA, contains a Glu-to-Lys substitution at codon 366. In four null alleles, BE1 is disrupted by T-DNA insertions, causing embryo developmental arrests at the heart stage. Light microscopy reveals reduced cell divisions and abnormal cell differentiation, thereby leading to defects in setting up the shoot apical meristem, embryonic vascular tissues and cotyledons. Overexpression of BE1 results in a pleiotropic phenotype, indicating that the fine-tuned BE1 level is crucial for plant growth and development. BE1 encodes a putative glycoside hydrolase that is highly conserved in higher plants. A BE1-GFP fusion protein, which is fully functional in complementing be1 mutants, is localized in plastids. The be1-3 phenotype can be partially rescued by glucose, fructose or sucrose, implying the involvement of BE1 in carbohydrate metabolism in plastids. | Xingchun Wang Li Xue Jiaqiang Sun Jianru Zuo | 2010 | Journal of Integrative Plant Biology2010,52,3: | 2 |
| 19 | The Application of X-STR: Two Case Reports显示文摘 | Zhengliang Yu Jing Sun Guangshu Ding Xi Wang Hong Liu Xingchun Zhao Wanshui Li | 2018 | Journal of Pharmacy and Pharmacology2018,6,9: | 2 |
| 20 | Spatial and temporal dynamics of microbial community composition and factors influencing the surface water and sediments of urban rivers显示文摘The temporal and spatial characteristics of urban river bacterial communities help us understand the feedback mechanism of bacteria to changes in the aquatic environment.The Fuhe River plays an important role in determining the water ecological environment of Baiyangdian Lake.16S rRNA gene sequencing was used to study the microbial distribution characteristics in the Fuhe River in different seasons.The results showed that some environmental factors of the surface water(ammonia nitrogen(NH_(3)^(-)N),total nitrogen(TN),and total phosphorus(TP))were different on the spatial and temporal scales.Moreover,there were no seasonal differences in the contents of TN,TP,total organic carbon(TOC),or heavy metals in the sediments.The distributions of Cyanobacteria,Actinomycetes and Firmicutes in the water and Actinomycetes and Planctomycetes in the sediments differed significantly among seasons(P<0.05).There were significant spatial differences in bacteria in the surface water,with the highest abundance of Proteobacteria recorded in the river along with the highest nutrient concentration,while the abundance of Bacteroidetes was higher in the upstream than the downstream.Microbial communities in the water weremost sensitive to temperature(T)and the TP concentration(P<0.01).Moreover,differences in the bacterial community were better explained by the content of heavy metals in the sediments than by the chemical characteristics.A PICRUStmetabolic inference analysis showed that the effect of high summer temperatures on the enzyme action led to an increase in the abundances of the metabolic-related genes of the river microorganisms. | Hongjie Wang Xingchun Liu Yali Wang Shengqi Zhang Guangming Zhang Yangyang Han Mengxiang Li Ling Liu | 2023 | Journal of Environmental Sciences2023,,2: | 2 |