|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Unsteady Turbulent Simulation and Pressure Fluctuation Analysis for Centrifugal Pumps显示文摘The pressure fluctuation in the flow passage of both impeller and casing is addressed on design condition.The initial conditions for the unsteady turbulent simulation are resulted from the steady calculations, and the three dimensional unsteady turbulent simulation concerning the rotor-stator interaction is executed by a Navier-Stoke solver embedded with k-ε turbulence model and with appropriate moving interface boundary conditions.Detecting points are distributed in the flow passage in different radial and circumferential positions to capture the static pressure fluctuation character for one cycle of the impeller.The time-domain spectrums show that the static pressure curves are periodic and have five peaks and five valleys.With the radius increasing, the pressure fluctuation peak-to-peak values in the impeller are increasing, and reach the maximum value on the interface.In the casing flow passage, those values are about 7% of local static pressure except some ones near the tongue.The values become decreasingly in the diffuser pipe.The frequency spectrums transformed by fast Fourier transform(FFT) show that the dominant frequency is approximate with the blade passing frequency, and the pressure fluctuations in impeller passage have high frequency content while those in casing ones have no such information. | YUAN Shouqi NI Yongyan PAN Zhongyong YUAN Jianping | 2009 | Chinese Journal of Mechanical Engineering2009,22,1: | 48 |
| 2 | A review of ecological restoration techniques in fluvial rivers显示文摘Rivers play an important role in people's living and agricultural production,however,intense human activities have broken the original ecological balance,and affected structures and functions of the river ecosystem.To restore the damaged river ecosystem back to a healthy status,effective ecological restoration measures need to be implemented.The main problems that the damaged rivers face are either the locally altered hydrological processes affected by construction of hydraulic facilities,or the deterioration of water quality resulted from pollution emissions,or both.In this study,ecological restoration techniques of the rivers affected by engineering control or pollution are reviewed respectively.In addition,three kinds of methods,i.e.physical,chemical and biological-ecological methods are introduced in details for the rivers affected by water pollution.At present,the development of river restoration techniques shows the following trends:1) the scale of ecological restoration is becoming larger;2) ecological restoration measures are required to meet multiple objectives;and 3) the management of water environment is changing from water quality management to aquatic ecosystem management. | Baozhu Pan Jianping Yuan Xinhua Zhang Zhaoyin Wang Jiao Chen Jinyou Lu Wenjun Yang Zhiwei Li Na Zhao Mengzhen Xu | 2016 | International Journal of Sediment Research2016,31,2: | 18 |
| 3 | DETECTION OF CAVITATION IN CENTRIFUGAL PUMP BY VIBRATION METHODS显示文摘For the purpose of detecting the cavitation of centrifugal pump onsite and real time,the vibration signals on varied operation conditions of both cavitation and non-cavitation obtained through acceleration sensors were analyzed.When cavitation occurs,the cavities near the leading edge of the blade will appear periodic oscillating,which will induce quasi-synchronous vibration.The frequency of the quasi-synchronous vibration symmetrically appears on the two sides of the blade passing frequency,by which the cavitation incipiency can be detected.During the developing process of the cavitation,as the severe complexity of the unsteady flow,it is very difficult to detect the development of cavitation by classical analysis methods.Fractal method of Higuchi is successfully used for detecting the incipiency,fully development of cavitation and the development between them. | NI Yongyan YUAN Shouqi PAN Zhongyong YUAN Jianping | 2008 | Chinese Journal of Mechanical Engineering2008,21,5: | 15 |
| 4 | Numerical simulation of leading edge cavitation within the whole flow passage of a centrifugal pump显示文摘In this paper, the periodically unsteady pressure field and head-drop phenomenon caused by leading edge cavitation have been investigated numerically by computational fluid dynamics (CFD) in a single stage centrifugal pump. A CFD model for cavitation steady and unsteady simulation has been calculated using the k-ω SST turbulence model combining with a multiphase approach, based on a homogeneous model assumption. A truncated form of Rayleigh-Plesset equation is used as a source term for the inter-phase mass transfer. The CFD computational region includes the suction cone, impeller, side chambers and volute, as well as suction and pressure pipes. The results were compared with experimental data under non-cavitation and cavitation conditions and a good agreement was obtained for the global performance, the experimental data of the head and the efficiency are 34.04 m and 74.42% at BEP, respectively, the predicted head is 34.31 m and the predicted efficiency is 73.75%. The analysis of inner flow pattern shows that the vortex flow generation in the rear of cavity region is the main reason of the head-drop. Obvious increasing can be observed for the amplitude of the pressure fluctuation at the blade passing frequency with different cavitation situations, and subpeak can be found. Besides, the effects of unsteady flow in the side chambers cannot be neglected for accurately predicting the inner flow of the pump. These results imply that this numerical method is suitable for the cavitating flow in the pump. | LI XiaoJun YUAN ShouQi PAN ZhongYong YUAN JianPing FU YanXia | 2013 | Science China(Technological Sciences)2013,56,9: | 14 |
| 5 | Dynamics analysis of chaotic circuit with two memristors显示文摘Based on Chua’s chaotic oscillation circuit, a fifth-order chaotic circuit with two memristors is designed and its corresponding dimensionless mathematic model is established. By using conventional dynamical analysis methods, stability analysis of the equilibrium set of the circuit is performed, the distribution of stable and unstable regions corresponding to the memristor initial states is achieved, and the complex dynamical behaviors of the circuit depending on the circuit parameters and the memristor initial states are investigated. The theoretical analysis and numerical simulation results demonstrate that the proposed chaotic circuit with two memristors has an equilibrium set located on the plane constituted by the inner state variables of two memristors. The stability of the equilibrium set depends on both the circuit parameters and the initial states of the two memristors. Rich nonlinear dynamical phenomena, such as state transitions, transient hyperchaos and so on, are expected. | BAO BoCheng SHI GuoDong XU JianPing LIU Zhong PAN SaiHu | 2011 | Science China(Technological Sciences)2011,54,8: | 13 |
| 6 | TAOK1 negatively regulates IL-17-mediated signaling and inflammation显示文摘Interleukin 17(IL-17)is an important cytokine that can induce tissue inflammation and is involved in the pathogenesis of numerous autoimmune diseases.However,the regulation of its signaling transduction has not been well described.In this study,we report that thousand and one kinase 1(TAOK1)functions as a negative regulator of IL-17-mediated signal transduction and inflammation.TAOK1 knockdown promotes IL-17-induced cytokine and chemokine expression and the activation of mitogen-activated protein kinases and nuclear factor-κB.We further demonstrate that TAOK1 interacts with IL-17 receptor A(IL-17RA)independent of its kinase activity,and TAOK1 dose-dependently prevents the formation of the IL-17R-Act1(nuclear factor activator 1,also known as tumor necrosis factor receptor-associated factor 3 interacting protein 2)complex.Consistent with this,TAOK1 deficiency exacerbates colitis in the 2,4,6-trinitrobenzenesulfonic acid-induced experimental model of inflammatory bowel disease,likely by its promotion of the IL-17-mediated signaling pathway.TAOK1 expression is decreased in the colons of ulcerative colitis patients.In conclusion,these findings suggest that TAOK1 is involved in the development of IL-17-related autoimmune disorders. | Zhaoru Zhang Zhen Tang Xianwei Ma Kai Sun Liping Fan Jie Fang Jianping Pan Xiaojian Wang Huazhang An Jun Zhou | 2018 | Cellular & Molecular Immunology2018,15,8: | 10 |
| 7 | A New Species of the Genus Tylototriton(Amphibia: Urodela: Salamandridae) from the Southern Dabie Mountains in Anhui Province显示文摘A new species of the genus Tylototriton is described,from Yuexi county,Anhui province,in the south of the Dabie Mountains.It is based on morphological and molecular analysis.The new species is identified as belonging to the Tylototriton asperrimus group and shares a number of similarities with T.wenxianensis,T.broadoridgus and T.dabienicus.The diagnostic characteristics of the new species are as follows: the head length is greater than the width of the head; bony ridges on the head are prominent and necked-in; the distal digit ends,ventral digits,peripheral area of the cloaca and the tail's lower edge are orange.The result from the molecular analysis of the genus Tylototriton(including the type specimen of the new species) based on three mitochondrial genes(ND1,ND2 and CYTB) indicated that the new species was close to T.wenxianensis,T.dabienicus,and T.broadoridgus,but formed an independent clade.This result was consistent with the morphological analysis above,which supports the theory that the population distributed in the south of the Dabie Mountains,namely in from Yuexi county,Anhui province,represented a distinct species,Tylototriton anhuiensis sp.nov. | Lifu QIAN Xiaonan SUN Jiaqi LI Weibo GUO Tao PAN Xing KANG Hui WANG Jianping JIANG Jun WU Baowei ZHANG | 2017 | Asian Herpetological Research2017,18,3: | 6 |
| 8 | A New Species of the Genus Rhacophorus (Anura: Rhacophoridae) from Dabie Mountains in East China显示文摘A new species of rhacophorid of the genus Rhacophorus is described from the Dabie Mountains of west Anhui,east China.The new species,Rhacophorus zhoukaiyae sp.nov.is distinguished from its congeners by a combination of the following characters: 1) the ventral surface and front-and-rear of the femur is paler yellowish and decorated with irregular grayish blotching,and without obvious spots on the dorsum of the hand and foot webbing; 2) the outer metatarsal tubercle is small; 3) outer fingers are half-webbed and outer toes two third webbed; 4) the skin on the dorsum is smooth and without compressed warts; 5) the throat,chest and belly are pure paler yellowish; 6) the dorsal part of the fingers and toes are grayish-white; 7) the iris is golden-yellow.In addition,the phylogenetic tree showed that all the individuals of R.zhoukaiyae sp.nov.clustered into one distinct clade which suggested the validity of this species.This results could also be used to the support of species delimitation.Currently,this species is known only from mid-elevation montane evergreen forest in the Dabie Mountains of west Anhui,China. | Tao PAN Yanan ZHANG Hui WANG Jun WU Xing KANG Lifu QIAN Kai LI Yu ZHANG Jinyun CHEN Dingqi RAO Jianping JIANG Baowei ZHANG | 2017 | Asian Herpetological Research2017,18,1: | 5 |
| 9 | Proteome analysis of peroxisomes from dark-treated senescent Arabidopsis leaves显示文摘Peroxisomes compartmentalize a dynamic suite of biochemical reactions and play a central role in plant metabolism, such as the degradation of hydrogen peroxide,metabolism of fatty acids, photorespiration, and the biosynthesis of plant hormones. Plant peroxisomes have been traditionally classified into three major subtypes, and in-depth mass spectrometry(MS)-based proteomics has been performed to explore the proteome of the two major subtypes present in green leaves and etiolated seedlings. Here, we carried out a comprehensive proteome analysis of peroxisomes from Arabidopsis leaves given a 48-h dark treatment.Our goal was to determine the proteome of the third major subtype of plant peroxisomes from senescent leaves, and further catalog the plant peroxisomal proteome. We identifieda total of 111 peroxisomal proteins and verified the peroxisomal localization for six new proteins with potential roles in fatty acid metabolism and stress response by in vivo targeting analysis. Metabolic pathways compartmentalized in the three major subtypes of peroxisomes were also compared, which revealed a higher number of proteins involved in the detoxification of reactive oxygen species in peroxisomes from senescent leaves. Our study takes an important step towards mapping the ful function of plant peroxisomes. | Ronghui Pan Sigrun Reumann Piotr Lisik Stefanie Tietz Laura J.Olsen Jianping Hu | 2018 | Journal of Integrative Plant Biology2018,60,11: | 5 |
| 10 | Multi-objective optimal preliminary planning of multi-debris active removal mission in LEO显示文摘The goal of this paper is to develop a preliminary plan for a multi-nanosatellite active debris removal platform(Mn ADRP) for low-Earth-orbit(LEO) missions. A dynamic multi-objective traveling salesman problem(TSP) scheme is proposed in which three optimization objectives, i.e., the debris removal priority,the Mn ADRP orbital transfer energy, and the number of required nanosatellites are modeled respectively. A modified genetic algorithm(GA) is also proposed to solve the dynamic multi-objective TSP. Finally, numerical experiments involving partially real-world the debris data set are conducted to verify the efficacy of the proposed models and the solution method. | Yong LIU Jianan YANG Yizhou WANG Quan PAN Jianping YUAN | 2017 | Science China(Information Sciences)2017,60,7: | 4 |
| 11 | Depression accelerates gastric cancer invasion and metastasis by inducing a neuroendocrine phenotype via the catecholamine/β_(2)-AR/MACC1 axis显示文摘Background:Depression is a common,easily ignored,accompanied disease of gastric cancer(GC)patients and is often observed with elevated plasma catecholamine levels.Depression frequently promotes GC progression and leads to poor clinical outcomes;however,the molecular mechanisms underlying depression-induced GC progression remain poorly understood.We aimed to study the effects of depression on GC progression and explore possible mechanisms mediating the action of depression-associated catecholamines on GC.Methods:Depression states of GC patients were graded using the Patient Health Questionnaire-9,and plasma catecholamine levels were examined by high performance liquid chromatography coupled with tandem mass spectrometry.Migrative and invasive GC cells were examined using transwell assays,and metastatic GC niches were imaged using bioluminescence technology in a depression mouse model established with chronic unpredictable mild stress.Mouse depression-like behaviors were assessed through sucrose preference,forced swimming,and tail suspension tests.Characteristics of the neuroendocrine phenotype were observed via RT-PCR,Western blotting,flow cytometry,and transmission electron microscopy.Results:Fifty-one GC patients(age:53.61±1.79 years;cancer duration:3.71±0.33 months;depression duration:2.37±0.38 months;male-to-female ratio:1.55:1)were enrolled in the study.Depression grade was significantly higher in GC patients showing higher plasma levels of catecholamines(epinephrine:P=0.018;noradrenaline:P=0.009),higher oncogene metastasis-associated in colon cancer-1(MACC1)level(P=0.018),and metastasis(P<0.001).Further,depression-associated catecholamine specifically bound to the beta-2 adrenergic receptor(β_(2)-AR)and upregulated MACC1 expression,and thus promoting neuroendocrine phenotypic transformation through direct binding betweenMACC1 and synaptophysin.Eventually,the neuroendocrine phenotypic transformation accelerated GC invasion in vitro and metastasis in vivo.However,β_(2)-AR antagonist ICI-118,551 or MACC1 silencing effectively blocked the catecholamineinduced neuroendocrine phenotypic transformation and eliminated depressionenhanced GC migration and invasion.Moreover,β_(2)-AR blocking or MACC1 silencing prevented GC metastasis attributed to a neuroendocrine phenotype in a depression mouse model.Conclusions:Catecholamine-induced neuroendocrine phenotypes of GC cells led to depression-accelerated GC invasion and metastasis via the β_(2)-AR/MACC1 axis,while β_(2)-AR antagonist or MACC1 silencing could reverse it,showing promising potential therapeutic strategies for improving the outcome of GC patients with comorbid depression. | Changqie Pan Jianhua Wu Siting Zheng Huiying Sun Yisheng Fang Zhenhua Huang Min Shi Li Liang Jianping Bin Yulin Liao Jinzhang Chen Wangjun Liao | 2021 | Cancer Communications2021,41,10: | 4 |
| 12 | A proof of concept for neutralizing antibody-guided vaccine design against SARS-CoV-2显示文摘Mutations and transient conformational movements of the receptor binding domain(RBD)that make neutralizing epitopes momentarily unavailable present immune escape routes for severe acute respiratory syndrome coronavirus 2(SARS-CoV-2).To mitigate viral escape,we developed a cocktail of neutralizing antibodies(NAbs)targeting epitopes located on different domains of spike(S)protein.Screening of a library of monoclonal antibodies generated from peripheral blood mononuclear cells of COVID-19 convalescent patients yielded potent NAbs,targeting the N-terminal domain(NTD)and RBD domain of S,effective at n M concentrations.Remarkably,a combination of RBD-targeting NAbs and NTD-binding NAbs,FC05,enhanced the neutralization potency in cell-based assays and an animal model.Results of competitive surface plasmon resonance assays and cryo-electron microscopy(cryo-EM)structures of antigen-binding fragments bound to S unveil determinants of immunogenicity.Combinations of immunogens,identified in the NTD and RBD of S,when immunized in rabbits and macaques,elicited potent protective immune responses against SARS-CoV-2.More importantly,two immunizations of this combination of NTD and RBD immunogens provided complete protection in macaques against a SARS-CoV-2 challenge,without observable antibody-dependent enhancement of infection.These results provide a proof of concept for neutralization-based immunogen design targeting SARS-CoV-2 NTD and RBD. | Li Zhang Lei Cao Xing-Su Gao Bin-Yang Zheng Yong-Qiang Deng Jing-Xin Li Rui Feng Qian Bian Xi-Ling Guo Nan Wang Hong-Ying Qiu Lei Wang Zhen Cui Qing Ye Geng Chen Kui-Kui Lu Yin Chen Yu-Tao Chen Hong-Xing Pan Jiaping Yu Wenrong Yao Bao-Li Zhu Jianping Chen Yong Liu Cheng-Feng Qin Xiangxi Wang Feng-Cai Zhu | 2021 | National Science Review2021,8,8: | 4 |
| 13 | First experimental constraints on WIMP couplings in the effective field theory framework from CDEX显示文摘We present weakly interacting massive particles(WIMPs) search results performed using two approaches of effective field theory from the China Dark Matter Experiment(CDEX), based on the data from both CDEX-1B and CDEX-10 stages. In the nonrelativistic effective field theory approach, both time-integrated and annual modulation analyses were used to set new limits for the coupling of WIMP-nucleon effective operators at 90% confidence level(C.L.) and improve over the current bounds in the low mχregion. In the chiral effective field theory approach, data from CDEX-10 were used to set an upper limit on WIMP-pion coupling at 90% C.L. We for the first time extended the limit to the m_(χ)<6 GeV/c^(2) region. | Yi Wang Zhi Zeng Qian Yue LiTao Yang KeJun Kang YuanJing Li Mehment Agartioglu HaiPeng An JianPing Chang JingHan Chen YunHua Chen JianPing Cheng Cheng Yi Chiang WenHan Dai Zhi Deng ChangHao Fang XinPing Geng Hui Gong QiuJu Guo XuYuan Guo HongJian He Li He ShengMing He JinWei Hu TuChen Huang HanXiong Huang HaiTao Jia LiPing Jia Xi Jiang HauBin Li JianMin Li Jin Li MingXuan Li RenMingJie Li Xia Li YuLan Li Bin Liao FongKay Lin ShinTed Lin ShuKui Liu YanDong Liu Yu Liu YuanYuan Liu ZhongZhi Liu Hao Ma YuCai Mao QiYuan Nie JinHua Ning Hui Pan NingChun Qi Jie Ren XiChao Ruan ChangSong Shang Vivek Sharma Ze She Lakhwinder Singh Monoj Kumar Singh TianXi Sun ChangJian Tang WeiYou Tang Yang Tian GuangFu Wang Li Wang Qing Wang Yu Chen Wang YunXiang Wang Zhen Wang Henry Tsz-King Wong ShiYong Wu YuCheng Wu HaoYang Xing Yin Xu Tao Xue YuLu Yan Nan Yi ChunXu Yu HaiJun Yu JianFeng Yue Ming Zeng BingTao Zhang Lei Zhang FengShou Zhang ZhenYu Zhang KangKang Zhao MingGang Zhao JiFang Zhou ZuYing Zhou JingJun Zhu | 2021 | Science China(Physics,Mechanics & Astronomy)2021,64,8: | 3 |
| 14 | Revisiting the TALE repeat显示文摘抄写像使活跃之物(TAL ) 受动器明确地绑加倍搁浅(ds ) 通过双人脚踏车的一个中央领域的 DNA 重复。每次 TAL 受动器(故事) 重复包括 3335 氨基酸并且在重复在一个固定位置通过高度可变的残余认出一个特定的 DNA 库。结构的研究由故事重复揭示了 DNA 识别的分子的基础。全面结构的检查表明故事蛋白质的基本积木,也就是一个螺旋状的发卡,一个螺旋从以前定义的故事主题被转移。这里,我们希望建议以绑在 DNA 脊梁磷酸盐的残余开始并且与基础识别的超残余得出结论的 TALE 重复的基于结构的重新分界。这个新数系统与到哪个故事合适的螺线管总科一致,并且反映 TAL 受动器的结构的正直。另外,它授与匹配界限 DNA 库的数字的故事重复的不可分的数字。我们然后与目标 DNA 分子在建筑群介绍设计 dHax3 变体的十五水晶结构,它阐明库腺嘌(A) 和 guanine (G) 由的识别的结构的基础报导或 uncharacterized 故事代码。最后,我们在一次故事重复以内分析了氨基酸残余的顺序结构关联。这里报导的结构的分析可以推进故事蛋白质的机械学的理解并且与改进亲密关系和特性便于 TALEN 的设计。 | Dong Deng Chuangye Yan Jianping Wu Xiaojing Pan Nieng Yan | 2014 | Protein & Cell2014,5,4: | 3 |
| 15 | Electrospinning Janus Type CoO_(x)/C Nanofibers as Electrocatalysts for Oxygen Reduction Reaction显示文摘Nanofibers with unique structures and multiple components have attracted more and more attention,which could combine multi-functions in one entity.Janus-type biphasic nanofibers with unique structure can be quickly obtained by electrospinning technology.We produced CoO_(x)/C nanofibers with Janus structure by self-made side-by-side electrospinning spinneret,combined with electrospinning technology and heat treatment.CoO_(x)/C nanofibers had a large amount of graphitic carbon distributed on one half of the Janus nanofiber,and CoO_(x)/C nanoparticles were embedded in the other half of the Janus nanofiber and distributed uniformly.CoO_(x)/C acted as ORR catalysis,and graphitic carbon,pridinc-N and CoO_(x) in CoO_(x)/C had a synergistic effect on their catalytic activity.The results confirmed that CoO_(x)/C was dominated by four-electron pathway under alkaline conditions,and the Tafel slope was lower than that of commercial Pt/C catalysts.The preparation method of this work is simple and easy,the structure is controllable,and the composition is adjustable,which provides a feasible way for preparing Janus structure nanofibers with different functions. | Xueyuan Cao Jianping Deng Kai Pan | 2020 | Advanced Fiber Materials2020,2,2: | 3 |
| 16 | First results on ^(76)Ge neutrinoless double beta decay from CDEX-1 experiment显示文摘We report the first results on ^(76)Ge neutrinoless double beta decay from stage one of the China dark-matter experiment(CDEX).A p-type point-contact high-purity germanium detector with a mass of 994 g has been installed to detect neutrinoless double beta decay events, as well as to directly detect dark matter particles. An exposure of 304 kg d has been analyzed over a wide spectral band from 500 keV to 3 MeV. The average event rate obtained was about 0.012 counts per keV per kg per day over the 2.039 MeV energy range. The half-life of ^(76)Ge neutrinoless double beta decay derived based on this result is T^(0ν)1/2>6.4×10^(22) yr(90% C.L.). An upper limit on the effective Majorana-neutrino mass of 5.0 eV has been achieved. | Li Wang Qian Yue KeJun Kang JianPing Cheng YuanJing Li TszKing Henry Wong ShinTed Lin JianPing Chang JingHan Chen QingHao Chen YunHua Chen Zhi Deng Qiang Du Hui Gong Li He QingJu He JinWei Hu HanXiong Huang TengRui Huang LiPing Jia Hao Jiang HauBin Li Hong Li JianMin Li Jin Li Jun Li Xia Li XueQian Li YuLan Li FongKay Lin ShuKui Liu Hao Ma JingLu Ma XingYu Pan Jie Ren XiChao Ruan ManBin Shen Vivek Sharma Lakhwinder Singh Manoj Kumar Singh Manoj Kumar Singh Arun Kumar Soma ChangJian Tang WeiYou Tang ChaoHsiung Tseng JiMin Wang Qing Wang ShiYong Wu YuCheng Wu HaoYang Xing Yin Xu Tao Xue LiTao Yang SongWei Yang Nan Yi ChunXu Yu HaiJun Yu WeiHe Zeng XiongHui Zeng Zhi Zeng Lan Zhang YunHua Zhang MingGang Zhao Wei Zhao JiFang Zhou ZuYing Zhou JingJun Zhu WeiBin Zhu ZhongHua Zhu | 2017 | Science China(Physics,Mechanics & Astronomy)2017,60,7: | 3 |
| 17 | Variation of freshwater components in the Canada Basin during 1967–2010显示文摘As a conservative tracer, oxygen isotopes in seawater are widely used for water mass analysis, along with temperature and salinity. In this study, seawater oxygen-18 datasets in the Canada Basin during 1967–2010 were obtained from the four cruises of the Chinese National Arctic Research Expedition(1999, 2003, 2008, and 2010) and the NASA database. Fractions of sea ice meltwater and river runoff were determined from the salinity-18O system. Our results showed that the river runoff decreased from the south to the north in the Canada Basin. The enhanced amount of river runoff observed in the southern Canada Basin may originate from the Mackenzie River, transported by the Beaufort Gyre. The river runoff component showed maximum fractions during 1967–1969, 1978–1979, 1984–1985, 1993–1994, and 2008–2010, indicating the refresh time of the river runoff was 5.0–16.0 a in the Canada Basin. The temporal variation of the river runoff was related to the change of the Arctic Oscillation(AO) index, suggesting the freshwater stored in the Canada Basin was affected by surface sea ice drift and water mass movement driven by atmospheric circulation. | PAN Hong CHEN Min TONG Jinlu QIU Yusheng ZHENG Minfang CAO Jianping | 2014 | Acta Oceanologica Sinica2014,33,6: | 3 |
| 18 | Coordination engineering of cobalt phthalocyanine by functionalized carbon nanotube for efficient and highly stable carbon dioxide reduction at high current density显示文摘Coordination engineering can enhance the activity and stability of the catalyst in heterogeneous catalysis.However,the axial coordination engineering between different groups on the carbon carrier and molecular catalysts in the electrocatalytic carbon dioxide reduction reaction(CO_(2)RR)has been studied rarely.Through coordination engineering strategy,a series of amino(NH_(2)),hydroxyl(OH),and carboxyl(COOH)groups functionalized carbon nanotubes(CNT)immobilized cobalt phthalocyanine(CoPc)catalysts are designed.Compared with no groups,OH groups and COOH groups,NH_(2)groups can effectively change the coordination environment of the central metal Co,thereby significantly increasing the turnover frequency(TOF)(31.4 s^(-1)at-0.6 V vs.RHE,CoPc/NH_(2)-CNT>CoPc/OH-CNT>CoPc/COOH-CN>CoPc/CNT).In the flow cell,the CoPc/NH_(2)-CNT catalyst has high carbon monoxide(CO)selectivity at high current density(~100%at-225 mA·cm^(-2),~96%at-351 mA·cm^(-2)).Importantly,the CoPc/NH_(2)-CNT catalyst can operate stably for 100 h at 225 mA·cm^(-2).Theoretical calculations reveal that CoPc/NH_(2)-CNT catalyst is beneficial to the formation of^(*)COOH and desorption of^(*)CO,thus promoting CO_(2)RR.This work provides an excellent platform for understanding the effect of coordination engineering on electrocatalytic performance and promotes a way to explore efficient and stable catalysts in other applications. | Hongdong Li Yue Pan Zuochao Wang Yaodong Yu Juan Xiong Haoyang Du Jianping Lai Lei Wang Shouhua Feng | 2022 | Nano Research2022,15,4: | 2 |
| 19 | Application of 3D Web GIS and real-time technique in earthquake information publishing and visualization显示文摘In hazard management, earthquake researchers have utilized GIS to ease the process of managing disasters.Researchers use Web GIS to assess hazards and seismic risk. Although they can provide a visual analysis platform based on GIS technology, they lack a general description in the extensibility of Web GIS for processing dynamic data,especially real-time data. In this paper, we propose a novel approach for real-time 3D visual earthquake information publishing model based on Web GIS and digital globe to improve the ability of processing real-time data in systems based on Web GIS. On the basis of the model, we implement a real-time 3D earthquake information publishing system—Eq Map3 D. The system can not only publish realtime earthquake information but also display these data and their background geoscience information in a 3D scene. It provides a powerful tool for display, analysis, and decisionmaking for researchers and administrators. It also facilitates better communication between researchers engaged in geosciences and the interested public. | Boren Li Jianping Wu Mao Pan Jing Huang | 2015 | Earthquake Science2015,28,3: | 2 |
| 20 | Formation and Optical Properties of ZnO:ZnFe_(2)O_(4) Superlattice Microwires显示文摘Pure ZnO hexagonal microwires and Fe(Ⅲ)-doped ZnO microwires(MWs)with a novel rectangular cross section were synthesized in a confined chamber by a convenient one-step thermal evaporation method.An oriented attachment mechanism is consistent with a vapor-solid growth process.Photoluminescence(PL)and Raman spectroscopy of the Fe(Ⅲ)-doped ZnO MWs and in situ spectral mappings indicate a quasi-periodic distribution of Fe(Ⅲ)along a one-dimensional(1-D)superlattice ZnO:ZnFe_(2)O_(4) wire,while PL mapping shows the presence of optical multicavities and related multimodes.The PL spectra at room temperature show weak near-edge doublets(376 nm and 383 nm)and a broad band(450-650 nm)composed of strong discrete lines,due to a 1-D photonic crystal structure.Such a 1-D coupled optical cavity material may find many applications in future photonic and spintronic devices. | Yun Li Guozhang Dai Chunjiao Zhou Qinglin Zhang Qiang Wan Limin Fu Jianping Zhang Ruibin Liu Chuanbao Cao Anlian Pan Yunhong Zhang Bingsuo Zou | 2010 | Nano Research2010,3,5: | 2 |