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66篇 您的检索式:作者名="YANG DeZhi"
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1Full time-domain nonlinear coupled dynamic analysis of a truss spar and its mooring/riser system in irregular wave显示文摘A new full time-domain nonlinear coupled method has been established and then applied to predict the responses of a Truss Spar in irregular wave.For the coupled analysis,a second-order time-domain approach is developed to calculate the wave forces,and a finite element model based on rod theory is established in three dimensions in a global coordinate system.In numerical implementation,the higher-order boundary element method(HOBEM)is employed to solve the velocity potential,and the 4th-order Adams-Bashforth-Moultn scheme is used to update the second-order wave surface.In deriving convergent solutions,the hull displacements and mooring tensions are kept consistent at the fairlead and the motion equations of platform and mooring-lines/risers are solved simultaneously using Newmark-integration scheme including Newton-Raphson iteration.Both the coupled quasi-static analysis and the coupled dynamic analysis are performed.The numerical simulation results are also compared with the model test results,and they coincide very well as a whole.The slow-drift responses can be clearly observed in the time histories of displacements and mooring tensions.Some important characteristics of the coupled responses are concluded.YANG MinDong TENG Bin XIAO LongFei NING DeZhi SHI ZhongMin QU Yan 2014Science China(Physics,Mechanics & Astronomy)2014,57,1:8
2H-O-S-Cu-Pb Isotopic Constraints on the Origin of the Nage Cu-Pb Deposit, Southeast Guizhou Province, SW China显示文摘The Nage Cu-Pb deposit,a new found ore deposit in the southeast Guizhou province,southwest China,is located on the southwestern margin of the Jiangnan Orogenic Belt.Ore bodies are hosted in slate and phyllite of Neoproterozoic Jialu and Wuye Formations,and are structurally controlled by EW-trending fault.It contains Cu and Pb metals about 0.12 million tonnes with grades of 0.2 wt% to 3.4 wt% Cu and 1.1 wt% to 9.27 wt% Pb.Massive and disseminated Cu-Pb ores from the Nage deposit occur as either veinlets or disseminations in silicified rocks.The ore minerals include chalcopyrite,galena and pyrite,and gangue minerals are quartz,sericite and chlorite.The H-O isotopic compositions of quartz,S-Cu-Pb isotopic compositions of sulfide minerals,Pb isotopic compositions of whole rocks and ores have been analyzed to trace the sources of ore-forming fluids and metals for the Nage Cu-Pb deposit.The δ65CuNBS values of chalcopyrite range from-0.09% to +0.33‰,similar to basic igneous rocks and chalcopyrite from magmatic deposits.δ65CuNBS values of chalcopyrite from the early,middle and final mineralization stages show an increasing trend due to63Cu prior migrated in gas phase when fluids exsolution from magma.δ34SCDT values of sulfide minerals range from 2.7‰ to +2.8‰,similar to mantle-derived sulfur(0±3‰).The positive correlation between δ65CuNBS and δ34SCDT values of chalcopyrite indicates that a common source of copper metal and sulfur from magma.δDH2OSMOW and δ18OH2O-SMOW values of water in fluid inclusions of quartz range from 60.7‰ to 44.4‰ and +7.9‰ to +9.0‰(T=260°C),respectively and fall in the field for magmatic and metamorphic waters,implicating that mixed sources for H2O in hydrothermal fluids.Ores and sulfide minerals have a small range of Pb isotopic compositions(208Pb/204Pb=38.152 to 38.384,207Pb/204Pb=15.656 to 17.708 and 206Pb/204Pb=17.991 to 18.049) that are close to orogenic belt and upper crust Pb evolution curve,and similar to Neoproterozoic host rocks(208Pb/204Pb=38.201 to 38.6373,207Pb/204Pb=15.648 to 15.673 and 206Pb/204Pb=17.820 to 18.258),but higher than diabase(208Pb/204Pb=37.830 to 38.012,207Pb/204Pb=15.620 to 15.635 and206Pb/204Pb=17.808 to 17.902).These results imply that the Pb metal originated mainly from host rocks.The H-O-S-Cu-Pb isotopes tegather with geology,indicating that the ore genesis of the Nage Cu-Pb deposit is post-magmatic hydrothermal type.ZHOU Jiaxi WANG Jingsong YANG Dezhi LIU Jinhai 2013Acta Geologica Sinica(English Edition)2013,87,5:7
3Intensive phototherapy vs.exchange transfusion for the treatment of neonatal hyperbilirubinemia:a multicenter retrospective cohort study显示文摘Background:Intensive phototherapy(IPT)and exchange transfusion(ET)are the main treatments for extreme hyperbilirubinemia.However,there is no reliable evidence on determining the thresholds for these treatments.This multicenter study compared the effectiveness and complications of IPT and ET in the treatment of extreme hyperbilirubinemia.Methods:This retrospective cohort study was conducted in seven centers from January 2015 to January 2018.Patients with extreme hyperbilirubinemia that met the criteria of ET were included.Patients were divided into three subgroups(low-,medium-,and high-risk)according to gestational week and risk factors.Propensity score matching(PSM)was performed to balance the data before treatment.Study outcomes included the development of bilirubin encephalopathy,duration of hospitalization,expenses,and complications.Mortality,auditory complications,seizures,enamel dysplasia,ocular motility disorders,athetosis,motor,and language development were evaluated during follow-up at age of 3 years.Results:A total of 1164 patients were included in this study.After PSM,296 patients in the IPT only group and 296 patients in the IPT plus ET group were further divided into the low-,medium-,and high-risk subgroups with 188,364,and 40 matched patients,respectively.No significant differences were found between the IPT only and IPT plus ET groups in terms of morbidity,complications,and sequelae.Hospitalization duration and expenses were lower in the low-and medium-risk subgroups in the IPT only group.Conclusions:In this study,our results suggest that IPT is a safe and effective treatment for extreme hyperbilirubinemia.The indication of ET for patients with hyperbilirubinemia could be stricter.However,it is necessary to have a contingency plan for emergency ET as soon as IPT is commenced especially for infants with risk factors.If IPT can be guaranteed and proved to be therapeutic,ET should be avoided as much as possible.Meng Zhang Yang He Jun Tang Wenbin Dong Yong Zhang Benjin Zhang Hong Wan Quanmin Deng Lirong Guan Bin Xia Zhong Chen Min Ge Jing Zhao Wenxing Li Jingjun Pei Yi Qu Dezhi Mu 2022Chinese Medical Journal2022,,5:7
4Spatial distribution and sources of soil heavy metals in the outskirts of Yixing City,Jiangsu Province,China显示文摘City outskirts serve as the concentration centers for the pollutants discharged from various sources such as industry,agriculture and transportation.With the acceleration of industrialization and urbanization,the eco-environment of the city outskirts has become a hot spot of public concern.An analysis was conducted in this paper on the soil in the outskirts of Yixing City using frequency distribution functions.The heavy metal sources in this region had been divided into two components,i.e.natural background component and strong human disturbance component.The corresponding interpretation of the distribution pattern and features of heavy metal elements was presented by spatial analysis.The results showed that the strong human disturbance components of Hg,Pb,and Cu accounted for 36.9%, 26.7%,and 23.3%in their contents respectively,which indicated directly the serious effect of human activities on heavy metal contents.Hg and Pb,because of the human disturbance,showed the greatest spatial variability,and human activities intensified the heterogeneity of the spatial distribution.The anisotropic analysis showed the higher organisation of Hg and Zn in the direction of urban-rural transition,which indicated their spatial characteristics with urban-rural transition.Pb displayed distinctive structure in the vertical direction of urban-rural transition,which was largely controlled by highway distribution.Cu content in paddy fields was significantly higher than those of other land-use-types,and the agricultural non-point source pollution played an important role in the distribution pattern of Cu.ShaoHua Wu ShengLu Zhou DeZhi Yang FuQiang Liao HongFu Zhang Kui Ren 2008Chinese Science Bulletin2008,53,S1:7
5An Electrochemically Assisted Mechanically Controllable Break Junction Approach for Single Molecule Junction Conductance Measurements显示文摘我们向调查单个分子传导力汇报一条电气化学地帮助的机械地可控制的裂缝连接(EC-MCBJ ) 途径。与金 nanobridge 连接的电极对被电气化学的免职制作然后在一个 homebuilt MCBJ 平台上增长了。很多 Au- molecule-Au 连接被金 nanobridge 碎重复并且重新连接顺序生产。以便测量他们的单个分子传导力,统计传导力直方图为 benzene-1,4-dithiol (BDT ) 和 4,4-bipyridine (BPY ) 被产生。从这些直方图提取的价值被发现在象以前在文学报导的价值的一样的范围。我们的方法从过去常然而,获得这些以前报导的文学价值的是不同的因为它更快,更简单,更划算,并且改变电极材料是更方便的。Yang Yang Zhaobin Chen Junyang Liu Miao Lu Dezhi Yang Fangzu Yang Zhongqun Tian 2011Nano Research2011,4,12:4
6Development of a new ferulic acid certified reference material for use in clinical chemistry and pharmaceutical analysis显示文摘This study compares the results of three certified methods,namely differential scanning calorimetry(DSC),the mass balance(MB) method and coulometric titrimetry(CT),in the purity assessment of ferulic acid certified reference material(CRM).Purity and expanded uncertainty as determined by the three methods were respectively 99.81%,0.16%;99.79%,0.16%;and 99.81%,0.26%with,in all cases,a coverage factor(k) of 2(P ? 95%).The purity results are consistent indicating that the combination of DSC,the MB method and CT provides a confident assessment of the purity of suitable CRMs like ferulic acid.Dezhi Yang Fengfeng Wang Li Zhang Ningbo Gong Yang Lv 2015Acta Pharmaceutica Sinica B2015,5,3:4
7Muscle-fiber array inspired,multiple-mode,pneumatic artificial muscles through planar design and one-step rolling fabrication显示文摘Advances in development of artificial muscles have enabled creation of soft robots with biological dexterity and self-adaption in unstructured environments;however,production of scalable artificial muscles with multiple-mode actuations remains elusive.Inspired by muscle-fiber arrays in muscular hydrostats,we present a class of versatile artificial muscles called MAIPAMs(muscle-fiber array inspired pneumatic artificial muscles),capable of multiple-mode actuations(such as parallel elongation-bending-spiraling actuations,10 parallel bending actuations and cascaded elongation-bending-spiraling actuations).Our MAIPAMs consist of active 3D elastomer-balloon arrays reinforced by a passive elastomer membrane,achieved through a planar design and one-step rolling fabrication approach.We introduce prototypical designs for the MAIPAMs and demonstrate their muscle-mimic structures and versatility,as well as their scalable ability to integrate flexible but non-stretchable layers for contraction and twisting actuation modes and compliant electrodes for self-sensing.We further demonstrate that this class of artificial muscles shows potential for versatile robotic applications,such as carrying a camera for recording videos,gripping or manipulating objects,and climbing a pipe-line.Jiang Zou Miao Feng Ningyuan Ding Peinan Yan Haipeng Xu Dezhi Yang Nicholas X.Fang Guoying Gu Xiangyang Zhu 2021National Science Review2021,8,10:3
8Screening, Characterization and Evaluation of Mangiferin Polymorphs显示文摘Mangiferin is a compound with many pharmacological activities and exists in many natural products.Anhydrous and hydrate of mangiferin have been reported separately in two literatures,but the polymorphism of this compound has not been realized until this paper.In this study,polymorph screening of mangiferin has been carried out and five forms have been obtained including three new forms never reported.Several solid state characterization methods,such as powder X-ray diffraction,differential scanning calorimetry and thermogravimetry,are used to identify and characterize all of mangiferin forms.The comparison of the crystallographic data and hirshfeld surface analysis were first reported for mangiferin anhydrous and hydrate.Furthermore,the studies on stability,transformation and solubility have been undertaken,the results prompt that form V can be used as the dominant polymorph for the development of innovative pharmaceuticals.Shiying Yang Qi Zhou Baoxi Zhang Li Zhang Dezhi Yang Haiguang Yang Guanhua Du Yang Lu 2020Natural Products and Bioprospecting2020,10,4:2
9Long-term effect of chemical fertilizer, straw, and manure on labile organic matter fractions in a paddy soil显示文摘Dezhi Yan Dejian Wang Linzhang Yang 2007Biology and Fertility of Soils2007,,1:2
10Three‐Dimensional Co3O4@MnO2 Hierarchical Nanoneedle Arrays: Morphology Control and Electrochemical Energy Storage显示文摘Dezhi Kong Jingshan Luo Yanlong Wang Weina Ren Ting Yu Yongsong Luo Yaping Yang Chuanwei Cheng 2014Adv. Funct. Mater2014,,24:2
11Anti-inflammatory Effects and Mechanisms of Rhein, an Anthraquinone Compound, and Its Applications in Treating Arthritis: A Review显示文摘Inflammation is a defensive response of living tissues to damaging agents,which exists in two forms,acute inflammation and chronic inflammation,and chronic inflammation is closely related to arthritis.Currently,the commonly prescribed anti-inflammatory medications are greatly limited by high incidence of gastrointestinal erosions in the clinical applications.Rhein,a bioactive constituent of anthraquinone,exhibits excellent anti-inflammatory activities and therapeutic effects on arthritis with less gastrointestinal damages.Although there are numbers of studies on anti-inflammatory effects and mechanisms of rhein in the last few decades,to the best of our knowledge,only a few review articles pay attention to the interactive relationships of rhein on multiple inflammatory signaling pathways and cellular processes from a comprehensive perspective.Herein,we summarized anti-inflammatory effects and mechanisms of rhein and its practical applications in the treatment of arthritis,thereby providing a reference for its basic researches and clinical applications.Hongjuan Wang Dezhi Yang Li Li Shiying Yang Guanhua Du Yang Lu 2020Natural Products and Bioprospecting2020,10,6:2
12Study on four polymorphs of bifendate based on X-ray crystallography显示文摘Bifendate, a synthetic anti-hepatitis drug, exhibits polycrystalline mode phenomena with 2polymorphs reported(forms A and B). Single crystals of the known crystalline form B and 3 new crystallosolvates involving bifendate solvated with tetrahydrofuran(C), dioxane(D), and pyridine(E) in a stoichiometric ratio of 1:1 were obtained and characterized by X-ray crystallography, thermal analysis,and Fourier transform infrared(FT-IR) spectroscopy. The differences in molecular conformation,intermolecular interaction and crystal packing arrangement for the four polymorphs were determined and the basis for the polymorphisms was investigated. The rotation of single bonds resulted in different orientations for the biphenyl, methyl ester and methoxyl groups. All guest solvent molecules interacted with the host molecule via an interesting intercalative mode along the [1 0 0] direction in the channel formed by the host molecules through weak aromatic stacking interactions or non-classical hydrogen bonds, of which the volume and planarity played an important role in the intercalation of the host with the guest. The incorporation of solvent-augmented rotation of the C–C bond of the biphenyl group had a striking effect on the host molecular conformation and contributed to the formation of bifendate polymorphs. Moreover, the simulated powder X-ray diffraction(PXRD) patterns for each form were calculated on the basis of the single-crystal data and proved to be unique. The single-crystal structures of the four crystalline forms are reported in this paper.Jinju Nie Dezhi Yang Kun Hu Yang Lu 2016Acta Pharmaceutica Sinica B2016,6,3:2
13查看详情显示文摘Hefang W Ligong C Guoyi B Dezhi L Yang L Xilong Y Yuecheng Z Junde X 0,,:1
14Generation/collection mode of SECM with combined probe显示文摘这里,我们报导扫描电气化学的显微镜学, theta micropipette 在被采用支持薄中央玻璃墙分开的二个邻近的 water/1,2-dichloroethane 接口的一个新奇产生 / 收集操作模式:一个人充当发电机当时其它作为收集者。当尖端来临了到 insulate 底层时,产生水流,收集水流和收集效率显著地被提高。Wei Wang Jie Zhang LianHuan Han DeZhi Yang Dong Ping Zhan 2012Chinese Chemical Letters2012,23,1:1
15Perceptually weighted mel-cepstrum analysis of speech based on psychoacoustic model显示文摘Yang Hongwu Huang Dezhi Cai Lianhong 2006IEICE Transactions on Information and Systems2006,89,12:1
16Corrosion damage behaviors of rubber O-rings under simulated acid fracturing conditions显示文摘To explore the damage behavior of O-ring in acid environment,a high-temperature and high-pressure(HTHP)autoclave was used to simulate the service environment of O-ring,and then 168h corrosion test of hydrogenated nitrile butadiene rubber(HNBR)and fluororubber(FM)O-rings were carried out.The corrosion damage behaviors of two kinds of rubber O-rings in the acidizing fluid were studied through determining their tensile strength,elongation at break,hardness,permanent compressive deformation,tensile fracture morphology and sealing property.The results showed that the crosssectional area and the compression permanent deformation increased,the tensile strength and hardness decreased when the HNBR and FM O-rings under the free state were subjected to acid corrosion.The elongation at break of HNBR decreased,and that of FM rubber increased greatly.Similar with free state,the HNBR and FM O-rings under sealed state also presented the same variation trend.The decrease in the reliability of the O-rings under the sealed state was less significant than that in the free state.In the test,tensile fractures were mostly brittle fractures,HNBR and FM O-rings had obvious corrosion damages such as deformation and swelling.The results could provide a technical basis for the selection of sealing materials,tool optimization design,and construction work in oil and gas fields.Dezhi Zeng Yang Zhong Dayong Cao Peng Zhao Tuanhui Fu Yadong Qi 2023Petroleum2023,9,2:1
17Detection of methylated tissue factor pathway inhibitor 2 and human long DNA in fecal samples of patients with colorectal cancer in China显示文摘JinPing Zhang ShaoBin Yang YuanYuan Xie XiangYu Chen Ye Zhao DeZhi He JianSheng Li 2011Cancer Epidemiology2011,,1:1
18Biphasic calcium phosphate nano-composite scaffolds reinforced with bioglass provide a synthetic alternative to autografts in a canine tibiofibula defect model显示文摘Tang Dezhi Xu Guohua Yang Zhou Holz Jonathan Ye Xiaojian Cai Shu Yuan Wen Wang Yongjun 2014Chinese Medical Journal2014,,7:1
19Preparation and Characterization of Andalusite Ceramic Used for Solar Thermal Power Generation显示文摘High-temperature thermal storage material is one of the critical materials of solar thermal power generation system. Andalusite, kaolin, talc, γ-Al 2 O 3 and partially stabilized zirconia were used as the raw materials, and in-situ synthesis of cordierite was adopted to fabricate thermal storage material for solar thermal power generation via pressureless sintering. The phase compositions, microstructures and thermal shock resistances of the sintered samples were analyzed by XRD, SEM and EDS, and the corresponding mechanical properties were measured. The results show that the major phases of the samples are mullite and zirconium silicate, and the pores distribute uniformly. After being sintered at 1 460 ℃, A4 sample exhibits a better mechanical performance and thermal shock resistance, its loss rate of bending strength after 30 cycles thermal shock is 3.04%, the bulk density and bending strength are 2.86 g·cm-3 and 139.66 MPa, respectively. The better thermal shock resistance of the sample is closely related to the effect of zirconium silicate, such as its uniform distribution, nested growth with mullite, low thermal expansion coeffi cient, high thermal conductivity, etc. This ceramic can be widely used as one of potential thermal storage materials of solar thermal power generation system.吴建锋 CHENG Hao XU Xiaohong ZHOU Yang HE Dezhi LIU Yi 2014Journal of Wuhan University of Technology(Materials Science)2014,29,3:1
20Effects of carrier trapping and scattering on hole transport properties of N , N ′-diphenyl- N , N ′-bis(1-naphthyl)-1,1′-biphenyl-4,4′-diamine thin films显示文摘Bixin Li Jiangshan Chen Yongbiao Zhao Dezhi Yang Dongge Ma 2011Organic Electronics2011,,6:1
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