维普中文期刊产品整合服务
388篇 您的检索式:作者名="Yongquan"
    题名 作者 年代 出处 被引量
1Re-Os isotopes and PGE geochemistry of black shales and intercalated Ni-Mo polymetallic sulfide bed from the Lower Cambrian Niutitang Formation, South China显示文摘The Lower Cambrian Niutitang Formation consists of a thick black shale sequence with a regionally distributed conformable Ni Mo polymetallic sulfide horizon and a chert bed at its basal strata on theYangtze Platform, South China. In this paper, we discuss all available data on Re Os isotopes and Platinum Group Element (PGE) distribution pattern of the Ni Mo polymetallic sulfide ore and its host rocks (black shales, cherts, and phosphorites) from Guizhou and Hunan provinces. Our results show that the black shales and the Ni Mo sulfide ore have a high initial 187 Os/ 188 Os ratio of 0.78~0.86, indicating that the Early Cambrian ocean across the Yangtze Platform had a highly radiogenic Os value. This ratio is slightly lower than but still similar to present day seawater, possibly as a result of high continental weathering at that time. The Ni Mo sulfide ore yields a Re Os isochron of 537±10 Ma (MSWD=11.9), possibly representing the depositional age of the Niutitang Formation. The chondrite normalized PGE pattern, Pt anomaly (Pt/Pt *), Pt/Pd, Ir/Pd, Au/Ir and Re/Mo ratios of the Ni Mo sulfide ore and its host rocks from South China indicate a varying source contribution of the PGE and other metals for different rocks. It is suggested that the cherts and Ni Mo sulfide ore may have a significant proportion of PGE and probably other metals deriving from submarine hydrothermal fluids with a mantle signature.JIANG Shaoyong*, YANG Jinghong, LING Hongfei, FENG Hongzhen, CHEN Yongquan and CHEN Jianhua(State Key Laboratory for Mineral Deposits Research, Department of Earth Sciences, Nanjing University, Nanjing 210093, China) 2003Progress in Natural Science:Materials International2003,13,10:78
2热应激环境下蛋鸡肠道微生物菌群多样性显示文摘通过分析热应激环境下蛋鸡肠道菌群结构的变化,旨在揭示热应激对肠道微生态环境的影响机理,为探索炎热环境下家禽肠道菌群定植规律提供理论依据。试验选择16周龄济宁百日鸡96只,随机分成对照组[(24±1)℃,Ⅰ]和热应激[(38±1)℃]组,分别在2个人工环境气候舱中饲养,各组设6个重复,每个重复8只,试验持续14 d。采用16S rDNA的变性梯度凝胶电泳(Denatured gradient gel electrophoresis,PCR-DGGE)技术和实时荧光定量(Real-time quantitative RT-PCR)以及多变量统计(Principal Components Analysis,PCA)分析等手段,分析热应激2d(Ⅱ)、7d(Ⅲ)和14 d(Ⅳ)时,对十二指肠、空肠及回肠内容物菌群多样性以及菌群数量变化。PCA分析结果显示,热应激暴露过程中十二指肠部位菌群组成与对照组保持相似的趋势,但热应激2 d时空肠部位菌群组成有分开趋势;到7 d时空肠与回肠部位菌群组成分开明显,而14 d时菌群组成具有明显差异;热应激7、14 d时空肠和回肠部位末检测到敏感乳杆菌(Lactobacillus agilis),回肠部位也末检测到约氏乳杆菌(Lactobacillus johnsonii)、不可培养细菌(Uncultured bacterium)等芽孢杆菌纲,而热应激不同时间段空肠和回肠部位可检测到不可培养细菌(Uncultured Escherichia sp)、溃疡拟杆菌(Bacteroides helcogenes)、卵形拟杆菌(Bacteroides ovatus)和索氏志贺氏菌(Shigella sonnei)等拟杆菌纲和γ-变形菌纲;其中约氏乳杆菌、敏感乳杆菌数量变化在空肠部位减少最明显(P<0.05),空肠和回肠卵形拟杆菌、不可培养的拟杆菌数量明显上升(P<0.05)。热应激环境下蛋鸡空肠、回肠部位菌群多样性较为丰富,其抑制乳杆菌属、不可培养细菌的增殖,促进卵形拟杆菌的繁殖,而促进卵形拟杆菌的繁殖,导致消化道菌群平衡的破坏。李永洙 李进 张宁波 陈常秀 CUI Yongquan 2015生态学报2015,35,5:30
3Preliminary Scientific Results of Chang'E-1 Lunar Orbiter:Based on Payloads Detection Data in the First Phase显示文摘Chang'E-1 lunar Orbiter was launched by Long March 3A rocket from Xichang Satel-lite Launch Center at 18:05BT(Beijing Time) Oct.24,2007.It is the first step of its ambitious three-stage moon program,a new milestone in the Chinese space exploration history.The primary science objectives of Chang'E-1 lunar orbiter are to obtain three-Dimension(3D) stereo images of the lunar surface,to analyze the distribution and abundance of elements on the surface,to investigate the thickness of lunar soil,evaluate helium-3 resources and other characteristics,and to detect the space environment around the moon.To achieve the above four mission objectives,eight sets of scientific instruments are chosen as the payloads of the lunar orbiter,including a CCD stereo camera(CCD),a Sagnac-based interferometer spectrometer(ⅡM),a Laser Altimeter(LAM),a Microwave Radiometer(MRM),a Gamma-Ray Spectrometer(GRS),an X-ray spectrometer(XRS),a High-Energy Particle Detector(HPD),and two Solar Wind Ion Detectors(SWID).The detected data of the payloads show that all payloads work well.This paper introduces the status of payloads in the first phase and preliminary scientific results.OUYANG Ziyuan JIANG Jingshan LI Chunlai SUN Huixian ZOU Yongliao LIU Jianzhong LIU Jianjun ZHAO Baochang REN Xin YANG Jianfeng ZHANG Wenxi WANG Jianyu MOU Lingli CHANG Jin ZHANG Liyan WANG Huanyu LI Yongquan ZHANG Xiaohui ZHENG Yongchun WANG Shijin BIAN Wei 2008空间科学学报2008,28,5:24
4Diffuse axonal injury after traumatic cerebral microbleeds: an evaluation of imaging techniques显示文摘Previous neuropathological studies regarding traumatic brain injury have primarily focused on changes in large structures, for example, the clinical prognosis after cerebral contusion, intracerebral hematoma, and epidural and subdural hematoma. In fact, many smaller injuries can also lead to severe neurological disorders. For example, cerebral microbleeds result in the dysfunction of adjacent neurons and the disassociation between cortex and subcortical structures. These tiny changes cannot be adequately visualized on CT or conventional MRI. In contrast, gradient echo sequence-based susceptibility-weighted imaging is very sensitive to blood metabolites and microbleeds, and can be used to evaluate traumatic cerebral microbleeds with high sensitivity and accuracy. Cerebral microbleed can be considered as an important imaging marker for diffuse axonal injury with potential relevance for prognosis. For this reason, based on experimental and clinical studies, this study reviews the role of imaging data showing traumatic cerebral microbleeds in the evaluation of cerebral neuronal injury and neurofunctional loss.Jun Liu Zhifeng Kou Yongquan Tian 2014Neural Regeneration Research2014,9,12:21
5Biphasic insulin aspart 30 improved glycemic control in Chinese patients with type 2 diabetes poorly controlled on oral glucose-lowering drugs: a subgroup analysis of the A1chieve study显示文摘Chen Liming Xing Xiaoyan Lei Minxiang Liu Jie Shi Yongquan Li Pengqiu Qin Guijun Li Chengjiang Li Yukun Wang Qing Gao Tianshu Hu Ling Wang Yangwei Yang Wenying 2014Chinese Medical Journal2014,,2:19
6Pb-Pb isotope dating of black shales from the Lower Cambrian Niutitang Formation, Guizhou Province, South China显示文摘The Lower Cambrian black shales of the Niutitang Formation and their lateral equivalents occur widely on the Yangtze Platform, South China. In this study, we examine two sections of the Niutitang Formation in Guizhou Province. We employ a stepwise acid leaching technique to obtain Pb isotope compositions of the black shales. At the Zhongnan section, the black shales display large Pb isotope variations, with 206 Pb/ 204 Pb of 20.5396~33.5709, and 207 Pb/ 204 Pb of 15.8407~16.5782. In contrast, Pb isotope data show a relatively limited range in 206 Pb/ 204 Pb (18.2797~18.5972) and 207 Pb/ 204 Pb (15.6813~15.7159) at the Zhijin section. Data for all acid leached black shale samples from the two sections yield a Pb Pb isochron age of 531±24 Ma. This age may represent the sedimentary age of the black shales. The initial Pb isotope composition of the black shales falls near the upper crust evolution curve in a Zartman Pb Pb evolution diagram. Hence, it is likely that the Pb in the black shales may have been derived from an upper continental crustal source.CHEN Yongquan, JIANG Shaoyong*, LING Hongfei, FENG Hongzhen, YANG Jinghong and CHEN Jianhua (State Key Laboratory for Mineral Deposits Research, Department of Earth Sciences, Nanjing University, Nanjing 210093, China) 2003Progress in Natural Science:Materials International2003,13,10:19
7热应激对蛋鸡肠道菌群结构、碱性磷酸酶活性及氨基酸转运载体mRNA表达丰度的影响显示文摘【目的】揭示热应激环境下蛋鸡肠道菌群结构、肠黏膜碱性磷酸酶活性和氨基酸转运载体mRNA表达量的变化机理。【方法】试验选择16周龄济宁百日鸡96只,随机分成对照组((24±1)℃;Ⅰ)和热应激((38±1)℃)组,各组设6个重复,每个重复8只,试验持续14 d。采用16S rDNA的PCR-DGGE技术和实时荧光定量PCR等手段,分析热应激2(Ⅱ)、7(Ⅲ)、14 d(Ⅳ)时,对十二指肠、空肠及回肠内容物菌群多样性和肠黏膜碱性磷酸酶活性以及氨基酸转运载体rBAT、y+LAT1、CATl mRNA基因表达的相对丰度变化规律。【结果】热应激7 d开始各肠段菌群多样性较为丰富,热应激7、14 d时空肠和回肠部位敏感乳杆菌(Lactobacillus agilis),回肠部位约氏乳杆菌(Lactobacillus johnsonii)、不可培养细菌(uncultured bacterium)和不可培养的拟杆菌属(uncultured Bacteroidales bacterium)均末检测到;而热应激不同时间段空肠和回肠部位可检测到不可培养细菌、溃疡拟杆菌(Bacteroides helcogenes)、卵形拟杆菌(Bacteroides ovatus)、索氏志贺氏菌(Shigella sonnei);空肠和回肠部位黏膜上皮细胞表面的碱性磷酸酶活性与Ⅰ组比较显著下降(P<0.05);而空肠和回肠Ⅲ组的rBAT、y+LAT1mRNA表达丰度均最低,空肠在各热应激时段表达丰度变化幅度最大(P<0.05),回肠的CAT1mRNA表达丰度在Ⅲ、Ⅳ组与Ⅰ组比较影响更明显(P<0.01)。【结论】热应激对空肠和回肠部位微生物菌群影响较为明显,肠道微生物群落改变可导致肠道的消化吸收功能发生改变。李永洙 陈常秀 Yongquan Cui 2013中国农业科学2013,46,20:15
8Molecular phylogenetic relationships of China Seas groupers based on cytochrome b gene fragment sequences显示文摘The classification and evolutionary relationships are important issues in the study of the groupers. Cytochrome b gene fragment of twenty-eight grouper species within six genera of subfamily Epinephelinae was amplified using PCR techniques and the sequences were analyzed to derive the phylogenetic relationships of the groupers from the China Seas. Genetic information indexes, including Kimura-2 parameter genetic distance and Ts/Tv ratios, were generated by using a variety of biology softwares. With Niphon spinosus, Pagrus major and Pagrus auriga as the designated outgroups, phylogenetic trees, which invoke additional homologous sequences of other Epinephelus fishes from GenBank, were constructed based on the neighbor-joining (NJ), maximum-parsimony (MP), maximum-likelihood (ML) and minimum-evolution (ME) methods. Several conclusions were drawn from the DNA sequences analysis: (1) genus Plectropomus, which was early diverged, is the most primitive group in the subfamily Epinephelinae; (2) genus Variola is more closely related to genus Cephalopolis than the other four genera; (3) genus Cephalopolis is a monophyletic group and more primitive than genus Epinephelus; (4) Promicrops lanceolatus and Cromileptes altivelis should be included in genus Epinephelus; (5) there exist two sister groups in genus Epinephelus.DING Shaoxiong, ZHUANG Xuan, GUO Feng, WANG Jun, SU Yongquan, ZHANG Qiyong & LI Qifu Department of Oceanography and Institute of Subtropical Oceanography, Xiamen University, Xiamen 361005, China Department of Biology, Xiamen University, Xiamen 361005, China 2006Science China(Life Sciences)2006,49,3:14
9NUMERICAL SIMULATION OF FLOW THROUGH ORIFICE ENERGY-DISSIPATORS IN XIAOLANGDI FLOOD-DISCHAR-GE TUNNEL显示文摘The cavitation of orifi ces is one of the main problems of the Xiaolangdi flood discharge tunnels. Along with the decompression experiment, the flow field was calculated in this paper by using an axis-symmetrical k-ε turbulence model. The calculated pressur e distribution was compared with the measured data and in agreement with each ot her. The calculated results show that few of the cavitation bubbles generating a t the orifice edge can reach the wall under the calculation condition, the force applied on the orifice surface and the flow pattern before the orifice may be i mproved obviously by adding the vortex elimination ring at the upper side of the orifice.Qu, Jingxue Xu, Weilin Yang, Yongquan Wang, Wei Diao, Mingjun 2000Journal of Hydrodynamics2000,12,3:14
10Epidemiological Data of Work-Related Musculoskeletal Disorders—China,2018–2020显示文摘Summary What is already known about this topic?In recent decades,work-related musculoskeletal disorders(WMSDs)have become increasingly prominent and have become an important issue that is of universal concern and an urgent need to be solved in all countries of the world.What is added by this report?The top three industries or occupational groups with the highest standardized prevalence rate of WMSDs were flight attendants,medical staff,and vegetable greenhouses in that order.Women workers were 1.5 times more likely to suffer from WMSDs than men workers.Ning Jia Huadong Zhang Ruijie Ling Yimin Liu Gang Li Zaoliang Ren Yan Yin Hua Shao Hengdong Zhang Bing Qiu Meibian Zhang Dayu Wang Qiang Zeng Rugang Wang Jianchao Chen Danying Zhang Liangying Mei Yongquan Liu Jixiang Liu Chengyun Zhang Tianlai Li Qing Xu Ying Qu Xueyan Zhang Xin Sun Zhongxu Wang 2021China CDC weekly2021,3,18:13
11Types and Origin of Dolostones in Tarim Basin, Northwest China: Petrographic and Geochemical Evidence显示文摘In the Tarim Basin of northwestern China hydrocarbon deposits have been discovered in parts of the thick strata of Cambrian dolostones. Based on petrographic study, six types of dolostone have been distinguished: Type-1, pink mud-bearing silty crystalline dolostone (PMSD); Type-2, gypsum- and salt-bearing fine crystalline dolostone (GSFD); Type-3, fine crystalline dolostone with dolomite crystals with cloudy core and clear rim (CCFD); Type-4, deep gray mud-bearing silty crystalline dolostone (GMSD); Type-5, euhedral coarse crystalline dolostone (ECD); and Type-6, xenotopic coarse crystalline dolostone (XCD). Applying petrographic and geochemical methods, the genesis of the dolostones is studied in this paper. Normally, Type-1 dolostone shows U- and Mo-depleted characteristics, reflecting a more oxidized formation environment; High δ18O and the purple color are consistent with formation of Sabkha dolostones on a supratidal flat. Types 2, 3, 4 dolostones show strata formation, similar REE patterns and 87Sr/86Sr ratios with contemporaneous limestones, suggesting a penecontemporaneous origin from seawater. Types 5 and 6 dolostones commonly occur as interbedded rocks, indicating secondary genesis after diagenesis. Type-6 dolostone has the highest order degree (OD) values (average 0.86), the lowest oxygen isotope values and positive Eu anomalies, which are consistent with previously reported hydrothermal dolostones. Differently, Type-5 shows euhedral texture, higher δ18O value, similar REE characteristic and 87Sr/86Sr ratios in comparison with contemporaneous limestones, suggesting that this type might have been dolomitized by down-transferring evaporated seawater during shallow burial stage. Dolostone fluid sources, formation environments and crystallizing dynamics are summarized and possible genetic models for the six types are proposed.CHEN Yongquan ZHOU Xinyuan JIANG Shaoyong ZHAO Kuidong 2013Acta Geologica Sinica(English Edition)2013,87,2:12
12A new type of plunge pool―Multi-horizontal submerged jets显示文摘Based on the understanding of the mechanism of energy dissipation,a new type of plunge pool is presented with the advantages of high rate of energy dissipation,low impact pressure,and small close-to-bed velocity on the soleplate of the plunge pool.The first advantage owes to enlarged shearing energy dissipation areas in the plunge pool,while the other two are caused by the jet that enters in a nearly horizontal level to keep the soleplate from being scoured directly.All of the above arrangements make this new type of energy dissipator distinct from the underflow energy dissipation.Through experiments on the physical model,the authors found that the water flow maintained stable and submerged in horizontal direction when the flow was narrow in horizontal but thick in vertical direction.However,the wide flat nappe was ready to submerge or float as the downstream water level rised or dropped.The entire flow fields of multi-horizontal submerged jets into plunge pool were also numerically simulated.The numerical results of water surface curve,close-to-bed velocity and floor pressure agree well with the experimental data.The flow pattern in the plunge pool was analyzed after combining the laboratory data and numerical simulation.DENG Jun,XU WeiLin,ZHANG JianMing,QU JinXue & YANG YongQuan State Key Laboratory of Hydraulics and Mountain River Engineering,Sichuan University,Chengdu 610065,China 2008Science China(Technological Sciences)2008,51,12:12
13Global Dynamic Modeling of Electro-Hydraulic 3-UPS/S Parallel Stabilized Platform by Bond Graph显示文摘Dynamic modeling of a parallel manipulator(PM) is an important issue. A complete PM system is actually composed of multiple physical domains. As PMs are widely used in various fields, the importance of modeling the global dynamic model of the PM system becomes increasingly prominent. Currently there lacks further research in global dynamic modeling. A unified modeling approach for the multi-energy domains PM system is proposed based on bond graph and a global dynamic model of the 3-UPS/S parallel stabilized platform involving mechanical and electrical-hydraulic elements is built. Firstly, the screw bond graph theory is improved based on the screw theory, the modular joint model is modeled and the normalized dynamic model of the mechanism is established. Secondly, combined with the electro-hydraulic servo system model built by traditional bond graph, the global dynamic model of the system is obtained, and then the motion, force and power of any element can be obtained directly. Lastly, the experiments and simulations of the driving forces, pressure and flow are performed, and the results show that, the theoretical calculation results of the driving forces are in accord with the experimental ones, and the pressure and flow of the first limb and the third limb are symmetry with each other. The results are reasonable and verify the correctness and effectiveness of the model and the method. The proposed dynamic modeling method provides a reference for modeling of other multi-energy domains system which contains complex PM.ZHANG Lijie GUO Fei LI Yongquan LU Wenjuan 2016Chinese Journal of Mechanical Engineering2016,29,6:11
14Investigation on Work-Related Musculoskeletal Disorders--China, 2018−2019显示文摘What is already known about this topic?Work-related musculoskeletal disorders(WMSDs)have a high prevalence and seriously harmful,which has attracted extensive attention in various countries in the world.Currently,the occurrence and rules of WMSDs in key industries are not known in China.What is added by this report?The prevalence of WMSDs is relatively high among professional populations in key industries in China,with the most commonly affected body parts concentrated in neck,shoulders,and low back and increasing with age and working years.What are the implications for public health practice?This study determined the prevalence and distribution characteristics of WMSDs in key industries in China and provided scientific evidence to recommend for inclusion of WMSDs in the new revision of the list of occupational diseases in China.Ning Jia Huadong Zhang Ruijie Ling Yimin Liu Gang Li Zaoliang Ren Yan Yin Hua Shao Hengdong Zhang Bing Qiu Meibian Zhang Dayu Wang Qiang Zeng Rugang Wang Jianchao Chen Danying Zhang Liangying Mei Yongquan Liu Jixiang Liu Chengyun Zhang Tianlai Li Qing Xu Ying Qu Xueyan Zhang Xin Sun Zhongxu Wang 2020China CDC weekly2020,2,18:11
15利用PCR-DGGE方法分析不同鸡群的盲肠微生物菌群结构变化显示文摘研究不同品种、饲养阶段的健康和不良鸡群对盲肠细菌种群结构和多样性的影响。使用基于16S rDNA的PCR-DGGE技术,结合割胶回收DNA进行克隆和测序,分别以4、6、10、16、20、40周龄蛋鸡及1、2、4、6、7、8周龄肉鸡健康、不良鸡群盲肠内容物为样本,研究其中特定细菌类群的16S rDNA序列片段指纹图谱,并进行聚类分析,鉴定特异性和共性种群。在两品种健康鸡群盲肠内容物的细菌群落中,Lactobacillus属菌株的相似性均高于不良鸡群,并且在不同饲养阶段的健康、不良鸡群间指纹图谱平均条带数差异显著(P<0.05);而Bacteroides属菌株在健康鸡群盲肠内容物细菌的相似性与不良鸡群较为相近,健康、不良鸡群间平均条带数差异显著(P<0.05);Clostridium属菌株在蛋鸡20、40周龄的平均条带数差异不显著(P>0.05),但肉鸡各周龄健康、不良鸡群间的平均条带数差异显著(P<0.05)。序列测序结果,在蛋鸡产蛋期健康、不良鸡群样本中均检测到能动乳杆菌(Lactobacillus agilis),而育雏和育成期中均检测到鸟乳杆菌(Lactobacillus aviaries)和不可培养细菌;两品种的健康、不良鸡群样本中均检测到Bacteroides属的生酸拟杆菌(Bacteroides acidifaciens)、不可培养物细菌(Uncultured bacterium);而健康、不良蛋鸡群样本中均检测到Clostridium属不可培养的变形菌(Uncultured proteobacterium),健康肉鸡群中检测到索氏志贺菌(Shigellasonnei),而两品种不良鸡群中均缺乏此类菌种。结果显示,不同品种、饲养阶段的鸡群,其盲肠细菌群落的组成差异显著,并且细菌种群结构对鸡群的生长发育影响较大。李永洙 Yongquan Cui 2011生态学报2011,31,21:9
16Studies on the pathogenic bacterium of ulcer disease in Epinephelus awoara显示文摘Studies were conducted to determine the cause of the acute mortality of cage-cultured Epinephelus awoara in the Tong’an Bay of Xiamen, China during the summer of 2002. Predominant bacteria strain TS- 628 was isolated from the diseased grouper. The virulence test confirmed that TS- 628 was the pathogenic bacterium. Biochemical characteristics of the isolates were determined using the automatic bacterial identification system and standard tube tests. To further confirm the identification, a 1 121 bp 16S rRNA gene sequence of the isolate was amplified by PCR, which had been deposited into Genbank (accession number: AY747308). According to the biochemical characteristics and by comparing the 16S rRNA gene homology of the isolate, the pathogenic bacterium was identified as Vibrio harveyi. Drug sensitivity tests showed that this pathogenic bacterium was sensitive to 16 antibacterials, especially to chloramphenicol and actinospectacin, but completely resistant to antibacterials likes vancomycin, penicillin, lincomycin, and so on.QIN Yingxue WANG Jun SU Yongquan WANG Dexiang CHEN Xinzhong 2006Acta Oceanologica Sinica2006,25,1:8
17Viral Metagenomics Analysis of Planktonic Viruses in East Lake,Wuhan,China显示文摘East Lake(Lake Donghu),located in Wuhan,China,is a typical city freshwater lake that has been experiencing eutrophic conditions and algal blooming during recent years.Marine and fresh water are considered to contain a large number of viruses.However,little is known about their genetic diversity because of the limited techniques for culturing viruses.In this study,we conducted a viral metagenomic analysis using a high-throughput sequencing technique with samples collected from East Lake in Spring,Summer,Autumn,and Winter.The libraries from four samples each generated 234,669,71,837,12,820,and 34,236 contigs(>90 bp each),respectively.The genetic structure of the viral community revealed a high genetic diversity covering 23 viral families,with the majority of contigs homologous to DNA viruses,including members of Myoviridae,Podoviridae,Siphoviridae,Phycodnaviridae,and Microviridae,which infect bacteria or algae,and members of Circoviridae,which infect invertebrates and vertebrates.The highest viral genetic diversity occurred in samples collected in August,then December and June,and the least diversity in March.Most contigs have low-sequence identities with known viruses.PCR detection targeting the conserved sequences of genes(g20,psbA,psbD,and DNApol)of cyanophages further confirmed that there are novel cyanophages in the East Lake.Our viral metagenomic data provide the first preliminary understanding of the virome in one freshwater lake in China and would be helpful for novel virus discovery and the control of algal blooming in the future.Xingyi Ge Yongquan Wu Meiniang Wang Jun Wang Lijun Wu Xinglou Yang Yuji Zhang Zhengli Shi 2013Virologica Sinica2013,28,5:8
18The U-Pb chronologic evidence and sedimentary responses of Silurian tectonic activities at northeastern margin of Tarim Basin显示文摘U-Pb ages of Devonian detrital zircons from Tabei Uplift have been determined through LA-ICP-MS test technology.The results revealed that most zircon ages concentrate on 460-414 Ma,especially around 436-423 Ma,indicating possible occurrences of strong tectonic events at the northern margin of Tarim Basin during that period.Combined with previous researches on the basin marginal orogenic belts,intense tectonic activities developed at the northeast margin of Tarim Basin and its obvious sedimentary responses in basin during the end of Ordovician to Early-Middle Silurian are discussed.These include(1) several unconformities within the Late Ordovician-Silurian,showing truncation,erosion,and onlap characteristics,which reflected the local uplift formed during the surrounding extrusion process;(2) the Silurian fluvial delta system from northeast to southwest in Keping,Yingmaili,Hade,and Caohu areas,which reflected the partial uplift at the northeast margin and provided clastic supply to basin;and(3) as indicated by heavy mineral analysis,the Silurian sediments came mainly from the recycles of orogenic belts provenance,which indicated the compress tectonic setting.In addition,a wide range of red mudstone layer distribution in the upper part of the Silurian may be closely related to the surrounding tectonic uplift and the rapid decline of sea levels.LIU JingYan YANG HaiJun YANG YongHeng CAI ZhenZhong LIU YongQuan RUI ZhiFeng SU ZhenZhen 2012Science China Earth Sciences2012,55,9:7
19Quaternary pyrite-structured nickel/cobalt phosphosulfide nanowires on carbon cloth as efficient and robust electrodes for water electrolysis显示文摘元素替换的策略是在催化剂调节活跃地点的电子结构的一个有效方法,从而在催化活动和稳定性导致改进。此处,我们设计并且综合黄铁矿类型镍 / 磷共同做碳布(NiCoPS/CC ) 上的公司 2 nanowires 为水电解的同样有效、持久的电极。镍和磷的介绍由于催化剂的活跃地点的电子结构的规定在氢进化反应生产了电极的表演的逐步、出色的改进并且在一个宽 pH 范围(014 ) 上加速了费用转移。也交付的 NiCoPS/CC 电极一将近 undecayed 10Jiayuan Li Zhaoming Xia Xuemei Zhou Yuanbin Qin Yuanyuan Ma Yongquan Qu 2017Nano Research2017,10,3:7
20Rational Secret Sharing Protocol with Fairness显示文摘CAI Yongquan PENG Xiaoyu 2012Chinese Journal of Electronics2012,21,1:6
返回顶部 每页显示:
共20页 首页 上一页 第1页 下一页 末页 /20 跳转

网站首页 | 关于我们 | 联系我们 | 产品服务 | 客服中心 | 广告服务 | 版权声明 | 网站联盟 | 友情链接 | 售卡网点

版权所有© 渝B2-20050021-1 渝公网安备 50019002500403号 违法和不良信息举报中心

互联网出版许可证 新出网证(渝)字10号 全国400电话 - 免长途话费