检索结果-南通市图书馆

Science China(Technological Sciences) 2009年第10期52卷 2869-2876页

作者： XU ZhaoDong SHI BenQiang WU KeYi ZENG Xiao RC&PC Key Laboratory of Education Ministry Southeast UniversityNanjing 210096China shun de country garden holdings co.ltd Shunde 528312China Huaxin Past&Telecom consulting and designing Institute co.ltd Hangzhou 310014China

The viscoelastic multi-dimensional earthquake isolation and mitigation device is a new kind of passive control device, which can perform its "name-giving" task of earthquake isolation and earthquake mitigation simultaneously. In order to quantify its vertical earthquake isolation and mitigation effect on structures, firstly, shaking table tests on steel frame structures with and without the devices were carried out; secondly, analysis on dynamic characteristics and dynamic responses of the structures was also performed; furthermore, the finite element analytical results and the experimental results were compared. It can be shown from the analytical and experimental results that the devices have noticeable earthquake isolation and mitigation effect in the vertical direction.

关键词： earthquake isolation and mitigation shaking table test finite element dynamic response

The ALMA-QUARKS Survey.Ⅰ.Survey description and Data Reduction

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Research in Astronomy and Astrophysics 2024年第2期24卷 104-124页

作者：刘训川 Tie Liu Lei Zhu Guido Garay Hong-Li Liu Paul Goldsmith Neal Evans Kee-Tae Kim Sheng-Yuan Liu Fengwei Xu Xing Lu Anandmayee Tej Xiaofeng Mai Leonardo Bronfman Shanghuo Li Diego Mardones Amelia Stutz Ken'ichi Tatematsu Ke Wang Qizhou Zhang Sheng-Li Qin Jianwen Zhou Qiuyi Luo Siju Zhang Yu Cheng Jinhua He Qilao Gu Ziyang Li Zhenying Zhang Suinan Zhang Anindya Saha Lokesh dewangan Patricio Sanhueza Zhiqiang Shen Shanghai Astronomical Observatory Chinese Academy of SciencesShanghai 200030China Chinese Academy of Sciences South America Center for Astronomy National Astronomical ObservatoriesChinese Academy of SciencesBeijing 100101China departamento de Astronomía Universidad de ChileLas Condes7591245 SantiagoChile School of Physics and Astronomy Yunnan UniversityKunming 650091China Jet Propulsion Laboratory California Institute of Technology4800 Oak Grove DrivePasadena CA 91109USA department of Astronomy The University of Texas at AustinTX 78712-1205USA Korea Astronomy and Space Science Institute 776 Daedeokdae-roYuseong-guDaejeon 34055Republic of Korea Institute of Astronomy and Astrophysics Academia SinicaRoosevelt RoadTaipei 10617China Kavli Institute for Astronomy and Astrophysics Peking UniversityBeijing 100871China department of Astronomy School of PhysicsPeking UniversityBeijing 100871China Indian Institute of Space Science and Technology Thiruvananthapuram 695547KeralaIndia Max Planck Institute for Astronomy Königstuhl 17D-69117 HeidelbergGermany departamento de Astronomía Universidad de ConcepciónCasilla 160-CConcepciónChile Nobeyama Radio Observatory National Astronomical Observatory of JapanNational Institutes of Natural Sciences462-2 NobeyamaMinamimakiMinamisakuNagano 384-1305Japan Center for Astrophysics∣Harvard&Smithsonian 60 Garden StreetCambridgeMA 02138USA Max-Planck-Institut für Radioastronomie Auf dem Hügel 69D-53125 BonnGermany School of Astronomy and Space Sciences University of Chinese Academy of SciencesBeijing 100049China National Astronomical Observatory of Japan 2-21-1 OsawaMitakaTokyo181-8588Japan Yunnan Observatories Chinese Academy of SciencesKunming 650216China Physical Research Laboratory NavrangpuraAhmedabad-380009India Astronomical Science Program The Graduate University for Advanced StudiesSOKENDAI2-21-1 OsawaMitakaTokyo 181-8588Japan University of Science and Technology Korea(UST)217 Gajeong-roYuseong-guDaejeon 34113Republic o

This paper presents an overview of the QUARKS survey,which stands for Querying Underlying mechanisms of massive star formation with ALMA-Resolved gas Kinematics and Structures."The QUARKS survey is observing139 massive clumps covered by 156 pointings at Atacama Large Millimeter/submillimeter Array(ALMA)Band 6(λ~1.3 mm).In conjunction with data obtained from the ALMA-ATOMS survey at Band 3(λ~3 mm),QUARKS aims to carry out an unbiased statistical investigation of massive star formation process within protoclusters down to a scale of 1000 au.This overview paper describes the observations and data reduction of the QUARKS survey,and gives a first look at an exemplar source,the mini-starburst Sgr B2(M).The wide-b and width(7.5 GHz)and high-angular-resolution(~0."3)observations of the QUARKS survey allow for the resolution of much more compact cores than those could be done by the ATOMS survey,and to detect previously unrevealed fainter filamentary structures.The spectral windows cover transitions of species including co,SO,N_(2)D^(+),SiO,H_(30)α,H_(2)co,CH_(3)CN,and many other complex organic molecules,tracing gas components with different temperatures and spatial extents.QUARKS aims to deepen our understanding of several scientific topics of massive star formation,such as the mass transport within protoclusters by(hub-)filamentary structures,the existence of massive starless cores,the physical and chemical properties of dense cores within protoclusters,and the feedback from already formed high-mass young protostars.

关键词： stars formation-stars kinematics and dynamics-ISM clouds-ISM molecules

Effects of generalist herbivory on resistance and resource allocation by the invasive plant, Phytolacca americana

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Insect Science 2016年第2期23卷 191-199页

作者： Wei Huang Jianqing Ding Key Laboratory of Aquatic Botany and Watershed Ecology Wuhan Botanical Garden Chinese Academy of Sciences Wuhan HubeiChina

Successful invasions by exotic plants are often attributed to a loss of co-evolved specialists and a re-allocation of resources from defense to growth and reproduction. However, invasive plants are rarely completely released from insect herbivory because they are frequently attacked by generalists in their introduced ranges. The novel generalist community may also affect the invasive plant＇s defensive strategies and resource allocation. Here, we tested this hypothesis using American pokeweed （Phytolacca americana L.）, a species that has become invasive in China, which is native to North America. We examined resistance, tolerance, growth and reproduction of plant populations from both China and the USA when plants were exposed to natural generalist herbivores in China. We found that leaf damage was greater for invasive populations than for native populations, indicating that plants from invasive ranges had lower resistance to herbivory than those from native ranges. A regression of the percentage of leaf damage against mass showed that there was no significant difference in tolerance between invasive and native populations, even though the shoot, root, fruit and total mass were larger for invasive populations than for native populations. These results suggest that generalist herbivores are important drivers mediating the defensive strategies and resource allocation of the invasive American pokeweed.

关键词： evolution of increased competitive ability generalist Phytolacca americanaL. resistance tolerance resource allocation

Benthic microbial biogeography along the continental shelf shaped by substrates from the Changjiang River plume

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Acta Oceanologica Sinica 2022年第1期41卷 118-131页

作者： Yongjun Wei Shan Jiang Lingmin Tian Liping Wei Jie Jin Juan Severino Pino Ibanhez Yan Chang Xiaodao Wei Ying Wu Key Laboratory of Advanced Drug Preparation Technologies of Ministry of Education School of Pharmaceutical SciencesZhengzhou UniversityZhengzhou 450001China State Key Laboratory of Estuarine and coastal Research East China Normal UniversityShanghai 200241China department of Food Science and Engineering Jinan UniversityGuangzhou 510632China Key Laboratory of Vegetation Restoration and Management of degraded Ecosystems South China Botanical GardenChinese Academy of SciencesGuangzhou 510650China School of Natural Sciences Trinity College DublinDublin 2Ireland Instituto de Investigacions Marinas Consejo Superior de Investigaciones CientificasVigo 36208Spain Institute of Eco-Chongming East China Normal UniversityShanghai 202162China

coastal zones are active reactors of continental material including that transported by rivers via a series of microbiota-mediated reactions. Nevertheless, current knowledge of the ecology and functioning of the microbiota in coastal areas affected by large riverine inputs remains insufficient on a global scale. Here, an investigation on sediment microbial composition, including taxonomy and metabolic network, as well as their relationship with major benthic reaction substrates, namely carbon, nitrogen, sulphur and phosphorus, was conducted in the continental shelf affected by the spread of the Changjiang River plume. Surface sediment samples(48 samples)were collected during March 2018, obtaining a mean Operational Taxonomic Units(OTUs) number of 3 341.Proteobacteria, Acidobacteria and Actinobacteria were abundant phyla in the studied sediments. Bray-Curtis distance analysis classified the 48 samples into 4 clusters(MG1 to MG4) at the phylum-level. MG1 and MG2 are found near the river mouth, receiving substantial land-derived particles from the Changjiang River runoff.Particle-attached microbes may be settled in these regions and influenced the observed sediment microbial diversity and biomass, e.g., increased Crenarchaeota relative abundance. The relative enrichment of these two groups in heterotrophic microbes further suggests a reliance of benthic microbiota on substrates with terrestrial origin, particularly specialized on processing sulphur-rich substrates. Regions MG3 and MG4 are located in the outer margin of the area affected by the Changjiang River plume, mainly fed by settling pelagic particles from phytoplankton. compared to MG1 and MG2, a significant increase in the abundance of Thaumarcheota(phylumlevel) and Nitrosopumilus(genus-level) was found in MG3, suggesting nitrogen-related transformations as the key reactions to sustain microbial metabolism in this region. coupled with the identified variations in the taxonomic composition, significant differences in the keystone taxa between MG1/MG2 and MG3/

关键词： benthic microbiota biogeography benthic substrate Changjiang River plume East China Sea Yellow Sea

Dismantling Marchandiomphalina into Agonimia(Verrucariaceae)and Lawreymyces gen.nov.(corticiaceae):setting a precedent to the formal recognition of thousands of voucherless fungi based on type sequences

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Fungal Diversity 2017年第3期84卷 119-138页

作者： Robert Lücking Bibiana Moncada Botanischer garden und Botanisches Museum Freie Universitat BerlinKonigin-Luise-Straße 6-814195 BerlinGermany Licenciatura en Biologia Universidad Distrital Francisco Jose de CaldasCra.4 No.26D-54Torre de LaboratoriosHerbarioBogotaD.C.Colombia

Based on an unexpected result of obtaining molecular sequence data from tropical representatives of the genus Normandina,we revised the biological concept of the neotropical taxon Marchandiomphalina foliacea.The obtained data let us conclude that M.foliacea is not a basidiomycete,as originally proposed,but belongs in Verrucariaceae,in the genus Agonimia,including its perithecia which had been identified with the lichenicolous Norrlinia peltigericola.The ITS(and nuLSU)sequences previously obtained from M.foliacea,seemingly confirming its status as a basidiomycete,are from an unmanifested lichenicolous fungus,present also in numerous specimens of Normandina.ITS data suggest the presence of seven lineages that can be recognized at the species level,forming two clusters:one cluster of three lineages found in thalli of M.foliacea,and a second cluster of four lineages found in thalli of Normandina.This pattern is similar to what has recently been found in the basidiomycete genus Cyphobasidium occurring predominantly in Parmeliaceae lichens.We propose the combination of Omphalina foliacea into the genus Agonimia,as Agonimia foliacea(P.M.Jørg.)Lucking&Moncada,comb.nov.,and place Marchandiomphalina in synonymy with Agonimia.To formally recognize the unnamed lichenicolous basidiomycete present in Agonimia and Normandina thalli,we take advantage of provision ICN Art.40.5 in the code and describe the unmanifested fungus as a new genus,with seven new species,even if no physical type specimens can be preserved(except for the corresponding host lichens which,however,do not show the features of the fungus):Lawreymyces Lucking&Moncada,gen.nov.(Type:L.palicei),with L.bogotensis Lucking&Moncada,sp.nov.,L.columbiensis Lucking&Moncada,sp.nov.,L.confusus Lucking&Moncada,sp.nov.,L,foliaceae Lucking&Moncada,sp.nov.,L.palicei Lucking&Moncada,sp.nov.,L.pulchellae Lucking&Moncada,sp.nov.,and L.spribillei Lucking&Moncada,sp.nov.This opens the door to the formal recognition of thousands of species of voucherless fungi detected through enviro

关键词： Artwork International code of Nomenclature for algae,fungi,and plants Illustration Sequences as types Typification Work of art

Effect of Simulated Acid Rain on Potential Carbon and Nitrogen Mineralization in Forest Soils

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Pedosphere 2008年第4期18卷 503-514页

作者： OUYANG Xue-Jun ZHOU Guo-Yi HUANG Zhong-Liang LIU Ju-Xiu ZHANG de-Qiang LI Jiong South China Botanic garden Chinese Academy of Sciences Guangzhou 510650 （China） Graduate School of the Chinese Academy of Sciences Beijing 100049 （China）

Acid rain is a serious environmental problem worldwide. In this study, a pot experiment using forest soils planted with the seedlings of four woody species was performed with weekly treatments of pH 4.40, 4.00, 3.52, and 3.05 simulated acid rain (SAR) for 42 months compared to a control of pH 5.00 lake water. The cumulative amounts of C and N mineralization in the five treated soils were determined after incubation at 25 ℃ for 65 d to examine the effects of SAR treatments. For all five treatments, cumulative co2-C production ranged from 20.24 to 27.81 mg kg-1 dry soil, net production of available N from 17.37 to 48.95 mg kg-1 dry soil, and net production of NO-3 -N from 9.09 to 46.23 mg kg-1 dry soil. SAR treatments generally enhanced the emission of co2-C from the soils; however, SAR with pH 3.05 inhibited the emission. SAR treatments decreased the net production of available N and NO3-N. The cumulative CH4 and N2O productions from the soils increased with increasing amount of simulated acid rain. The cumulative co2-C production and the net production of available N of the soil under Acmena acuminatissima were significantly higher (P ≤ 0.05) than those under Schima superba and Cryptocarya concinna. The mineralization of soil organic C was related to the contents of soil organic C and N, but was not related to soil pH. However, the overall effect of acid rain on the storage of soil organic matter and the cycling of important nutrients depended on the amount of acid deposition and the types of forests.

关键词：森林土壤矿化作用有机碳有机氮

Biological Effects of Cloth containing Specific Ore Powder in Patients with Pollen Allergy

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Biomedical and Environmental Sciences 2016年第8期29卷 563-573页

作者： Suni LEE Hitoshi OKAMOTO Shoko YAMAMOTO Tamayo HATAYAMA Hidenori MATSUZAKI Naoko KUMAGAI-TAKEI Kei YOSHI-TOME Yasumitsu N1SHIMURA Toshiaki SATO Yasuzo KIRITA Yoshio FUJII Takemi OTSUKI Biological Sciences Universidad De Los Andes Bogota 111711 Col. Department of Hygiene Kawasaki Medical School 577 Mastushima Kurashiki 701-0192 Japan cosmic garden co. ltd. 1-2-25 Ima Kita-Ku Okayama 700-0975 Japan coordinator Specified Nonprofit Organiztion MEDICAL TECHNO OKA YAMA 1st Floor General Education Research Building Shikata Campus 2-5-1 Shikata Kita-ku Okayama 700-8558 Japan Okayama University Organization for Research Promotion and collaboration 3rd Floor Basie Medicine Building Shikata Campus 2-5-1 Shikata Kita-ku Okayama 700-8558 Japan

Objective The custom-homebuilding company, cosmic garden co. ltd., located in Okayama City, Japan was established in 1997 and uses specific natural ore powder （SNOP） in wall materials and surveys customers in order to improve allergic symptoms. Methods To investigate the biological effects of SNOP, patients with a pollen allergy were recruited to stay in a room surrounded by cloth containing SNOP （CCSNOP）, and their symptoms and various biological parameters were compared with those of individuals staying in a room surrounded by control non-woven cloth （NWC）. Each stay lasted 60 min. Before and immediately after the stay, a questionnaire regarding allergic symptoms, as well as POMS （Profile of Mood Status） and blood sampling, was performed. Post-stay minus pre-stay values were calculated and compared between CCSNOP and NWC groups. Results Results indicated that some symptoms, such as nasal obstruction and lacrimation, improved, and POMS evaluation showed that patients were calmer following a stay in CCSNOP. Relative eosinophils, non-specific Ig E, epidermal growth factor, monocyte chemotactic protein-I, and tumor necrosis factor-a increased following a stay in CCSNOP. conclusion This ore powder improved allergic symptoms, and long-term monitoring involving 1 to 2 months may be necessary to fully explore the biological and physical effects of SNOP on allergic patients.

关键词： Specific Mineral Cloth, Indoor air Immunological effects Pollen allergy

Quantitative analysis of catechins in Saraca asoca and correlation with antimicrobial activity

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Journal of Pharmaceutical Analysis 2013年第6期3卷 421-428页

作者： Amey Shirolkar Anjum Gahlaut Anil K.Chhillar Rajesh Dabur National Research Institute of Basic Ayurvedic Sciences (Central Council for Research in Ayurvedic Sciences)Nehru Garden Centre for Biotechnology Maharishi Dayanand University department of Biochemistry Maharishi Dayanand University

Herbal medicines are highly complex and have unknown mechanisms in diseases treatment. Saraca asoca （Roxb.）, de. Wild has been recommended to treat gynecological disorders and used in several commercial polyherbal formulations. In present study, efforts have been made to explore antimicrobial activity and its co-relation with the distributions of catechins in the organs of S. asoca using targeted MS/MS. Eight extracts （cold and hot water） from four different organs of S. asoca and two drugs were prepared and antimicrobial activity was assessed by microbroth dilution assay. Quantitative and qualitative analysis of catechins in crude extracts was done by using targeted and auto-MS/MS and correlated with antimicrobial activity. （＋）-Catechin and （＋）- epicatechin and their biosynthesis related compound were found to be up-regulated in regenerated bark and leaves extracts. （-）-Epigallocatechin was found to be significantly higher in bark water extract as compared to others but showed low antimicrobial activity. Result showed down- regulation of （-）-epigallocatechin and up-regulation of （＋）-catechin and （＋）-epicatechin in the regenerated bark and leaves of S. asoca. It might be the contributing factor in the antimicrobial activity of regenerated bark and leaves of the plant. The concentration of （＋）-epicatechin in processed drugs （Ashokarishta） from Baidyanath was found to be seven times higher than that of Dabur Pvt. ltd., but no antimicrobial activity was observed, indicating the variations among the plant based drugs. This will be helpful in rational use of S. asoca parts. Furthermore, the analyticalmethod developed is sensitive, repeatable and reliable; therefore, it is suitable for quality control of herbal drugs.

关键词： Mass spectroscopy Phytochemistry Quality control Flavonoids Ayurveda Antimicrobial

Marine invasions enter the genomic era： three lessons from the past, and the way forward

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Current Zoology 2016年第6期62卷 629-642页

作者： Frederique VIARD Patrice DAVID John A. DARLING Sorbonne Universites UPMC Univ Paris 06 CNRS UMR 7144 Lab. Adaptation Et Diversite En Milieu Marin Team Div&Co Station Biologique De Roscoff Roscoff 29682 France CEFE UMR 5175 CNRS-Universite De Montpellier- UM III-EPFIE 1919 Route De Mende Montpellier Cedex 34293 France National Exposure Research Laboratory United States Environmental Protection Agency Research Triangle Park NC 27711 USA

The expanding scale and increasing rate of marine biological invasions have been documented since the early 20th century. Besides their global ecological and economic impacts, non-indigenous species (NIS) also have attracted much attention as opportunities to explore important eco-evolutionary processes such as rapid adaptation, long-distance dispersal and range expansion, and secondary contacts between divergent evolutionary lineages. In this context, genetic tools have been extensively used in the past 20 years. Three important issues appear to have emerged from such studies. First, the study of NIS has revealed unexpected cryptic diversity in what had previously been assumed homogeneous entities. Second, there has been surprisingly little evidence of strong founder events accompanying marine introductions, a pattern possibly driven by large propagule loads. Third, the evolutionary processes leading to successful invasion have been difficult to ascertain due to faint genetic signals. Here we explore the potential of novel tools associated with high-throughput sequencing (HTS) to address these still pressing issues. Dramatic increase in the number of loci accessible via HTS has the potential to radically increase the power of analyses aimed at species delineation, exploring the population genomic consequences of range expansions, and examining evolutionary processes such as admixture, introgression, and adaptation. Nevertheless, the value of this new wealth of genomic data will ultimately depend on the ability to couple it with expanded "traditional" efforts, including exhaustive sampling of marine populations over large geographic scales, integrated taxonomic analyses, and population level exploration of quantitative trait differentiation through common-garden and other laboratory experiments.

关键词：生物入侵基因组海洋进化过程道路遗传工具全球生态种类划分

Impacts of X-ray irradiation on Saccharomyces cerevisiae cells growth and physiological-biochemical characteristic

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Nuclear Science and Techniques 2015年第6期26卷 46-54页

作者：曹国珍张苗苗李文建缪建顺陆栋张文德 Institute of Modern Physics Chinese Academy of Sciences School of Pharmacy Lanzhou University Key Laboratory of Microbial Resources Exploitation and Application Gansu Ronghua Industry Group co. ltd

In this paper, the growth curves of yeast cells exposed to X-rays were detected, and then fitted by Gompertz equation. The yeast cells treated with 50–125 Gy showed an increased exponential growth rate, and lower total biomass at plateau. At doses ≥ 150 Gy, cells showed a decreased exponential growth rate and higher total biomass at plateau. DNA lesions were detected by comet assay. Meanwhile, intracellular accumulation of reactive oxygen species(ROS), reduction of mitochondrial membrane potential(?Ψ m) and cell membrane integrity were evaluated. We conclude that X-ray irradiation results in DNA lesions, ROS accumulation and?Ψ m decline in a dose-dependent manner, and that these changes may be one of causes of X-rays-induced apoptosis in yeast. Furthermore, yeast cell membrane integrity appeared compromised following irradiation,suggesting that membrane damage may also have a role in the biological effects of radiation.

关键词：细胞生长曲线 X射线照射酿酒酵母生理生化特性 Gompertz 线粒体膜电位脱氧核糖核酸试验检测