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1Impacts of thermodynamic processes over the Tibetan Plateau on the Northern Hemispheric climate显示文摘We here report our recent research results on the climatic features of Tibetan thermodynamic functions and their impacts on the regional climates of the Northern Hemisphere. The results show that the thermodynamic processes over the Tibetan Plateau not only strongly influence the Asian monsoon and precipitation, but also modulate the atmospheric circulation and climate over North America and Europe through stimulating the large-scale teleconnections such as the Asian-Pacific oscillation and affect the atmospheric circulation over the southern Indian Ocean. The Tibetan climate may be affected by sea surface temperatures over the tropical Pacific. On the other hand, the Tibetan climate also affects the atmosphere-ocean interactions in the tropics and mid-latitudes of the Pacific by the atmospheric circulation over the North Pacific. In spring and summer, the thermodynamic anomalies on the plateau affect the subtropical high pressure, the Hadley circulation, and the intertropical convergence zone over the Pacific, and then modulate the development of the El Ni-o/Southern Oscillation (ENSO). It is necessary to study the forecasting methods for the development of ENSO from the Tibetan climate anomaly. This result also embodies the essence of interactions among land, atmosphere, and ocean over the Northern Hemisphere. Since the previous studies focused on impacts of the plateau on climates in the Asian monsoon regions, it is essential to pay more attention to studying the roles of the plateau in the Northern Hemispheric and even global climates.ZHOU XiuJi ZHAO Ping CHEN JunMing CHEN LongXun LI WeiLiang 2009Science China Earth Sciences2009,52,11:42
2An update on the regulatory mechanisms of NLRP3 inflammasome activation显示文摘The NOD-,LRR-,and pyrin domain-containing protein 3(NLRP3)inflammasome is a multiprotein complex involved in the release of mature interleukin-1βand triggering of pyroptosis,which is of paramount importance in a variety of physiological and pathological conditions.Over the past decade,considerable advances have been made in elucidating the molecular mechanisms underlying the priming/licensing(Signal 1)and assembly(Signal 2)involved in NLRP3 inflammasome activation.Recently,a number of studies have indicated that the priming/licensing step is regulated by complicated mechanisms at both the transcriptional and posttranslational levels.In this review,we discuss the current understanding of the mechanistic details of NLRP3 inflammasome activation with a particular emphasis on protein-protein interactions,posttranslational modifications,and spatiotemporal regulation of the NLRP3 inflammasome machinery.We also present a detailed summary of multiple positive and/or negative regulatory pathways providing upstream signals that culminate in NLRP3 inflammasome complex assembly.A better understanding of the molecular mechanisms underlying NLRP3 inflammasome activation will provide opportunities for the development of methods for the prevention and treatment of NLRP3 inflammasome-related diseases.Seungwha Paik Jin Kyung Kim Prashanta Silwal Chihiro Sasakawa Eun-Kyeong Jo 2021Cellular & Molecular Immunology2021,18,5:43
3Magnesium deficiency in plants:An urgent problem显示文摘Although magnesium(Mg) is one of the most important nutrients, involved in many enzyme activities and the structural stabilization of tissues, its importance as a macronutrient ion has been overlooked in recent decades by botanists and agriculturists, who did not regard Mg deficiency(MGD) in plants as a severe health problem. However, recent studies have shown,surprisingly, that Mg contents in historical cereal seeds have markedly declined over time, and two thirds of people surveyed in developed countries received less than their minimum daily Mg requirement. Thus, the mechanisms of response to MGD and ways to increase Mg contents in plants are two urgent practical problems. In this review, we discuss several aspects of MGD in plants, including phenotypic and physiological changes, cell Mg2+homeostasis control by Mg2+transporters, MGD signaling, interactions between Mg2+and other ions, and roles of Mg2+in plant secondary metabolism. Our aim is to improve understanding of the influence of MGD on plant growth and development and to advance crop breeding for Mg enrichment.Wanli Guo Hussain Nazim Zongsuo Liang Dongfeng Yang 2016The Crop Journal2016,4,2:39
4A generalized variational principle and theoretical model for magnetoelastic interaction of ferromagnetic bodies显示文摘The quantitative analysis shows that no theoretical model for 3-d magnetoelastic bodies, in literatures to date, can commonly simulate two kinds of distinct experimental phenomena on magnetoelastic interaction of ferromagnetic structures. This makes it difficult to effectively discribe the magnetoelastic mechanical behavior of structures with complex geometry, such as shells. Therefore, it is a key step for simulating magnetoelastic mechanical characteristics of structures with complex geometry to establish a 3-d model which also can commonly characterize the two distinct experimental phenomena. A theoretical model for three dimension magnetizable elastic bodies, which is commonly suitable for the two kinds of experimental phenomena on magnetoelastic interaction of ferromagnetic plates, is presented by the variational principle for the total energy functional of the coupling system of the 3-d ferromagnetic bodies. It is found that for the case of linear isotropic magnetic materials, the magnetic周又和 郑晓静 1999Science China Mathematics1999,42,6:26
5Direct numerical simulation of shock/turbulent boundary layer interaction in a supersonic compression ramp显示文摘A direct numerical simulation of the shock/turbulent boundary layer interaction flow in a supersonic 24-degree compression ramp is conducted with the free stream Mach number 2.9.The blow-and-suction disturbance in the upstream wall boundary is used to trigger the transition.Both the mean wall pressure and the velocity profiles agree with those of the experimental data,which validates the simulation.The turbulent kinetic energy budget in the separation region is analyzed.Results show that the turbulent production term increases fast in the separation region,while the turbulent dissipation term reaches its peak in the near-wall region.The turbulent transport term contributes to the balance of the turbulent conduction and turbulent dissipation.Based on the analysis of instantaneous pressure in the downstream region of the mean shock and that in the separation bubble,the authors suggest that the low frequency oscillation of the shock is not caused by the upstream turbulent disturbance,but rather the instability of separation bubble.LI XinLiang1,FU DeXun2,MA YanWen2 & LIANG Xian1 1 Key Laboratory of High Temperature Gas Dynamics,Institute of Mechanics,Chinese Academy of Sciences,Beijing 100190,China 2 The State Key Laboratory of Nonlinear Mechanics,Institute of Mechanics,Chinese Academy of Sciences,Beijing 100190,China 2010Science China(Physics,Mechanics & Astronomy)2010,53,9:24
6Tri-Co Robot: a Chinese robotic research initiative for enhanced robot interaction capabilities显示文摘Since the invention of the first industrial robot in 1959, the missions of robots have evolved from basic mechanical transfer or assistance to a diverse range of tasks through close interactions with environment, their human counterparts and robot peers. Through adaptation to uncertain and dynamic environments.Han Ding Xuejun Yang Nanning Zheng Ming Li Yinan Lai Hao Wu 2018National Science Review2018,5,6:24
7Dynamic dam-reservoir interaction analysis including effect of reservoir boundary absorption显示文摘Based on the scaled boundary finite-element method, the governing equations for the analysis of dam-reservoir interaction including the reservoir boundary absorption are developed. Coupling with the equation of dam-unbounded foundation interaction, it can effectively carry out the earthquake response analysis of dameservoir-foundation system. The proposed approach has the advantages that the effect of compressibility of reservoir water as well as the energy absorption of reservoir boundary on the earthquake response of arch dams and gravity dams can be efficiently evaluated and higher accuracy can be achieved. In comparison with the methods available in the literature, the computational cost can be reduced to a great extent. It facilitates the application of earthquake response analysis of dam-reservoir-foundation system including reservoir boundary absorption to the engineering practice.LIN Gao DU JianGuo HU ZhiQiang 2007Science China(Technological Sciences)2007,50,z1:23
8Effect of the Interaction of Different Scale Vortices on the Structure and Motion of Typhoons显示文摘EffectoftheInteractionofDifferentScaleVorticesontheStructureandMotionofTyphoonsChenLianshou(陈联寿)(ChineseAcademyofMet6orologic...陈联寿 罗哲贤 1995Advances in Atmospheric Sciences1995,12,2:22
9Late Mesozoic crust-mantle interaction in southeastern Fujian——Isotopic evidence from the Pingtan igneous complex显示文摘UNDERPLATING Of mantle-derived basaltic magma and interacting with the lower crust materials are believed to be an important mechanism for the growth and transformation of the crust.Dong, CW Zhou, XM Li, HM Ren, SL Zhou, XH 1997Chinese Science Bulletin1997,42,6:23
10LA-ICP-MS zircon U-Pb dating and phenocryst EPMA of dikes, Guocheng, Jiaodong Peninsula: Implications for North China Craton lithosphere evolution显示文摘Widespread dike swarm, including diorite-, monzonite-porphyry and lamprophyre, intruded in the al- tered breccia gold deposits along basin marginal faults, Guocheng, Jiaodong Peninsula. Petrography exhibits biotite enclaves in amphibole phenocrysts and the presence of acicular apatites in these dikes. Electron probe microanalyses (EPMA) show that the amphibole and clinopyroxene phenocryst’s mantle in diorite porphyry and lamprophyre respectively has sharply higher MgO (Mg#) and Cr2O3 contents in contrast to their cores. The plagioclase phenocryst in monzonite porphyry has reverse zoning. These results indicate that the magma mixing between mantle-derived mafic and crust-derived felsic magmas occurred in the original process of the dikes. Zircon cathodoluminescence (CL) images show well-developed magmatic oscillatory zones and the acquired LA-ICP-MS zircon U-Pb weighted mean 206Pb/238U ages are 114±2 Ma (MSDW=1.5) for monzonite porphyry (GS1) and 116±1 Ma (MSDW=0.8) for diorite porphyry (GS2), respectively. Earlier magmatic events in the northwest Jiaodong Peninsula represented by some inherited or captured zircons also occur in these dikes. Magmatic zircons from GS1 and GS2 display consistent chondrite-normalized REE patterns and Nb/Ta values, implying that they may share a similar or same source. HREE enrichment and obvious negative Eu anomalies of these zircons preclude garnet presented in their source. Our results, combined with preciously pub- lished data, indicate that dike intrusion and gold mineralization among quartz vein, altered tectonite and altered breccia gold deposits are broadly contemporaneous throughout the Jiaodong Peninsula. These also imply that the intensive crust-mantle interaction and asthenospheric underplating had oc- curred in the Early Cretaceous in the Peninsula, together with foundering of lower crust in the early Mesozoic, representing the different stages of lithosphere thinning in the North China Craton (NNC).TAN Jun WEI JunHao GUO LingLi ZHANG KeQing YAO ChunLiang LU JianPei LI HongMei 2008Science China Earth Sciences2008,51,10:23
11Cumulate complex xenoliths in the Early Mesozoic in eastern Inner Mongolia显示文摘Mafic xenoliths occur in Mesozoic diorites from nine localities in eastern Inner Mongolia from the Da Hinggan Mrs. to Huabei craton. Their petrologic and geochemical features suggest that they are an intact suite of cumulate complex whose mineral assemblages contain typical patent mantle metasomatism minerals such as pargosite, phlogopite and apatite. Their REEs and trace element characteristics suggest a comagmatic relationship in these cumulates with different compositions. Isotopic dating of the xenoliths indicates that they are products of the mantle magmatic underplating in the Early Mesozoic (237—224 Ma), and they may provide direct evidence for the crust-mantle interaction and vertical accretion of continental crust under a background of the mantle upwelling in the Early Mesozoic in Huabei region.Ji’an Shao Qingjun Han Luqiao Zhang Baolei Mu 1999Chinese Science Bulletin1999,44,14:21
12PBPK modeling and simulation in drug research and development显示文摘Physiologically based pharmacokinetic(PBPK) modeling and simulation can be used to predict the pharmacokinetic behavior of drugs in humans using preclinical data.It can also explore the effects of various physiologic parameters such as age,ethnicity,or disease status on human pharmacokinetics,as well as guide dose and dose regiment selection and aid drug–drug interaction risk assessment.PBPK modeling has developed rapidly in the last decade within both the field of academia and the pharmaceutical industry,and has become an integral tool in drug discovery and development.In this mini-review,the concept and methodology of PBPK modeling are briefly introduced.Several case studies were discussed on how PBPK modeling and simulation can be utilized through various stages of drug discovery and development.These case studies are from our own work and the literature for better understanding of the absorption,distribution,metabolism and excretion(ADME) of a drug candidate,and the applications to increase efficiency,reduce the need for animal studies,and perhaps to replace clinical trials.The regulatory acceptance and industrial practices around PBPK modeling and simulation is also discussed.Xiaomei Zhuang Chuang Lu 2016Acta Pharmaceutica Sinica B2016,6,5:21
13Flow-induced vibrations of long circular cylinders modeled by coupled nonlinear oscillators显示文摘The dynamics of long slender cylinders undergoing vortex-induced vibrations (VIV) is studied in this work. Long slender cylinders such as risers or tension legs are widely used in the field of ocean engineering. When the sea current flows past a cylinder, it will be excited due to vortex shedding. A three-dimensional time domain model is formulated to describe the response of the cylinder, in which the in-line (IL) and cross-flow (CF) deflections are coupled. The wake dynamics, including in-line and cross-flow vibrations, is represented using a pair of non-linear oscillators distributed along the cylinder. The wake oscillators are coupled to the dynamics of the long cylinder with the acceleration coupling term. A non-linear fluid force model is accounted for to reflect the relative motion of cylinder to current. The model is validated against the published data from a tank experiment with the free span riser. The comparisons show that some aspects due to VIV of long flexible cylinders can be reproduced by the proposed model, such as vibrating frequency, dominant mode number, occurrence and transition of the standing or traveling waves. In the case study, the simulations show that the IL curvature is not smaller than CF curvature, which indicates that both IL and CF vibrations are important for the structural fatigue damage.GE Fei LONG Xu WANG Lei HONG YouShi 2009Science China(Physics,Mechanics & Astronomy)2009,52,7:20
14Synthesis of novel nanomaterials and their application in efficient removal of radionuclides显示文摘With the development of nuclear energy, large amounts of radionuclides are inevitably released into the natural environment. It is necessary to eliminate radionuclides from wastewater for the protection of environment. Nanomaterials have been considered as the potential candidates for the effective and selective removal of radionuclides from aqueous solutions under complicated conditions because of their high specific surface area, large amounts of binding sites, abundant functional groups, pore-size controllable and easily surface modification. This review mainly summarized the recent studies for the synthesis, fabrication and surface modification of novel nanomaterials and their applications in the efficient elimination and solidification of radionuclides,and discussed the interaction mechanisms from batch experiments, spectroscopy analysis and theoretical calculations. The sorption capacities with other materials, advantages and disadvantages of different nanomaterials are compared, and at last the perspective of the novel nanomaterials is summarized.Xiangxue Wang Long Chen Lin Wang Qiaohui Fan Duoqiang Pan Jiaxing Li Fangting Chi Yi Xie Shujun Yu Chengliang Xiao Feng Luo Jun Wang Xiaolin Wang Changlun Chen Wangsuo Wu Weiqun Shi Shuao Wang Xiangke Wang 2019Science China Chemistry2019,62,8:20
15Toxicity of cadmium and its competition with mineral nutrients for uptake by plants:A review显示文摘Cadmium(Cd)is a toxic heavy metal occurring in the environment naturally and is also generated through various anthropogenic sources and acts as a pollutant.Human health is affected by Cd pollution in farmland soils because food is the main source of Cd intake in the non-smoking population.For crops,Cd toxicity may result from a disturbance in uptake and translocation of mineral nutrients and disturbance in plant metabolism,inhibiting plant growth and development.However,plants have Cd tolerance mechanisms,including restricted Cd uptake,decreased Cd root-to-shoot translocation,enhanced antioxidant enzyme activities,and increased production of phytochelatins.Furthermore,optimal supply of mineral nutrients is one of the strategies to alleviate the damaging effects of Cd on plants and to avoid its entry into the food chain.The emerging molecular knowledge contributes to understanding Cd uptake,translocation,and remobilization in plants.In this review,Cd toxicity and tolerance mechanisms,agricultural practices to minimize Cd accumulation,Cd competition with essential elements(calcium,copper,iron,zinc,and manganese),and genes associated with Cd uptake are discussed in detail,especially regarding how these mineral nutrients and genes play a role in decreasing Cd uptake and accumulation in crop plants.Shiyu QIN Hongen LIU Zhaojun NIE Zed RENGEL Wei GAO Chang LI Peng ZHAO 2020Pedosphere2020,30,2:20
16Diversity,evolutionary contribution and ecological roles of aquatic viruses显示文摘Aquatic viruses include infected viruses in aquatic animals, plants and microorganisms, and free-floating viruses(virioplankton)in water environments. In the last three decades, a huge number of aquatic viruses, especially diverse free-floating viruses,including cyanophages, phycoviruses, archaea viruses, giant viruses, and even virophages, have been identified by virological experiments and metagenomic analyses. Based on a comprehensive introduction of aquatic virus classification and their morphological and genetic diversity, here, we summarize and outline main virus species, their evolutionary contribution to aquatic communities through horizontal gene transfer, and their ecological roles for cyanobacterial bloom termination and global biogeochemical cycling in freshwater and marine ecosystems. Thereby, some novel insights of aquatic viruses and virus-host interactions, especially their evolutionary contribution and ecological rolesin diverse aquatic communities and ecosystems, are highlighted in this review.Qi-Ya Zhang Jian-Fang Gui 2018Science China(Life Sciences)2018,61,12:19
17Interaction between subducted continental crust and the mantle --Ⅱ. Sr and Nd isotopic geochemistry of the syncollisional mafic-ultramafic intrusions in Dabie Mountains显示文摘The syncollisional mafic\|ultramafic rocks with Nb, Zr, Ti negative anomalies in the North Dabie terrane have Sr and Nd isotopic compositions with EMI features. Their low and variable initial ε Nd values ranging from -2 to -18 are similar to those of their gneissic country rocks and the ultrahigh\|pressure metamorphic rocks in the South Dabie terrane. These Sr and Nd isotopic features are difficult to be interpreted by mantle metasomatism related to oceanic subduction or crust assimilation, but is best explained by the mantle metasomatism related to continental subduction.李曙光 聂永红 S.R.Hart 张宗清 1998Science China Earth Sciences1998,41,6:19
18Magnetic spin–orbit interaction of light显示文摘We study the directional excitation of optical surface waves controlled by the magnetic field of light.We theoretically predict that a spinning magnetic dipole develops a tunable unidirectional coupling of light to transverse electric(TE)polarized Bloch surface waves(BSWs).Experimentally,we show that the helicity of light projected onto a subwavelength groove milled into the top layer of a 1D photonic crystal(PC)controls the power distribution between two TE-polarized BSWs excited on both sides of the groove.Such a phenomenon is shown to be solely mediated by the helicity of the magnetic optical field,thus revealing a magnetic spin-orbit interaction of light.Remarkably,this magnetic optical effect is clearly observed via a near-field coupler governed by an electric dipole moment:it is of the same order of magnitude as the electric optical effects involved in the coupling.This opens up new degrees of freedom for the manipulation of light and offers desirable and novel opportunities for the development of integrated optical functionalities.Mengjia Wang Hongyi Zhang Tatiana Kovalevich Roland Salut Myun-Sik Kim Miguel Angel Suarez Maria-Pilar Bernal Hans-Peter Herzig Huihui Lu Thierry Grosjean 2018Light(Science & Applications)2018,7,1:15
19Study on interaction between the coastal water, shelf water and Kuroshio water in the Huanghai Sea and East China Sea显示文摘The main processes of interaction between the coastal water, shelf water and Kuroshiowater in the Huanghai Sea (HS) and East China Sea (ECS) are analyzed based on the observation andstudy results in recent years. These processes include the intrusion of the Kuroshio water into the shelfarea of the ECS, the entrainment of the shelf water into the Kuroshio, the seasonal process in the south-em shelf area of the ECS controlled alternatively by the Taiwan Strait water and the Kuroshio water in-truding into the shelf area, the interaction between the Kuroshio branch water, shelf mixed water andmodified coastal water in the northeastern ECS, the water-exchange between the HS and ECS and thespread of the Changjiang diluted water.Binghuo Guo, Xiaomin Hu, Xuejun Xiong, Renfeng Ge First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, China 2003Acta Oceanologica Sinica2003,22,3:15
20Study on lithogeochemistry of Middle Jurassic basalts from southern China represented by the Fankeng basalts from Yongding of Fujian Province显示文摘There exists an E-W trending Middle Jurassic volcanic zone in southern China. The Fankeng basalts in the Yongding basin of Fujian Province are considered to be a typical example. The Fankeng basalts have TiO2 contents in the range of 1.92%-3.21%. They are classified as high-Ti basalts. They also have higher total Fe (averaging FeO* = 11.09%). The Middle Jurassic Fankeng basalts from southwestern Fujian have obvious distinctive lithogeochemical features from early Cre- taceous basalts from southeastern coast of China. They have higher HFSE, such as Th, Nb, Ta, Zr and Ti. Their element ratios related with HFSE, such as Zr/Ba, La/Nb, La/Ta ,Zr/Y, Ti/Y, Ba/Nb, K/Ti and Rb/Zr are similar to those of OIB. The most samples have ε Nd(T) of-0.70-0.24, which are near chondrite. Some samples have higher ε Nd(T) of 1.87-3.55.Therefore, these basaltic magmas might be derived from depleted asthenospheric mantle. The lithogeochemical characteristics of the Fankeng basalts may be caused by interaction between asthenosphere and lithosphere at the time. The (Early-) Middle Jurassic basalts and gabbros from southeastern Hunan, southern Jiangxi and northern Guangdong provinces show similar geochemical features to those of the Fankeng basalts from the Yongding of Fujian. Occurrence of these OIB-type basalts in the area may be regarded as the petrological mark of upwelling of asthenosphere at the time. Upwelling of asthenosphere has led to tectonic extension and the formation of rifted basin in the area.ZHOU Jincheng1,2, JIANG Shaoyong1,2, WANG Xiaolei1,2, YANG Jinghong 1,2 & ZHANG Mengqun 3 1. State Key Laboratory of Mineral Deposit Research, Nanjing University, Nanjing 210093, China 2. Department of Earth Sciences, Nanjing University, Nanjing 210093, China 3. Modern Analysis Center, Nanjing University, Nanjing 210093, China 2006Science China Earth Sciences2006,49,10:14
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