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Elevational patterns of functional diversity and trait of Delphinium(Ranunculaceae)in Hengduan Mountains,China

Plant Diversity 2022年第1期44卷 20-29页

作者： Li-Shen Qian hong-hua Shi Xiao-Kun Ou Hang Sun School of Life Sciences Yunnan UniversityKunming650091China University of Chinese Academy of Sciences Beijing100049China CAS Key Laboratory for Plant Diversity and Biogeography of East Asia Kunming Institute of BotanyChinese Academy of SciencesKunming650201China School of Ecology and Environmental Science Yunnan UniversityKunming650091China

Elevational patterns of trait occurrence and functional diversity provide an important perspective for understanding ***,previous studies have mostly examined functional diversity at the community ***,we examined large-scale patterns of trait occurrence and functional diversity in Delphinium along an elevational gradient from 1000 to 5700 m in the Hengduan Mountains,SW *** distribution and trait data of 102 Delphinium species were compiled to evaluate the patterns of interspecific traits,species richness,and functional *** found that the distribution of species richness showed a unimodal curve that peaked between 3500 and 4000 m;functional diversity and traits showed different patterns along an elevational gradient The functional diversity increased at a lower rate along an elevation gradient,whereas species richness continued to *** with large ranges and non-endemic species were most affected by geometric *** of species endemic to the Hengduan Mountains peaked at higher elevations,likely due to increased speciation and restricted dispersion under alpine *** conclude that the middle elevation region is not only the functionally richest but also the most functionally stable region for Delphinium,which could be insurance against environmental *** conditions and strong environmental filters in an alpine environment may cause the convergence of species traits,which could relate to reducing nutrient trait investment and increasing reproductive trait *** conclude that large-scale studies are consistent with previous studies at the community *** may indicate that the relationship between functional diversity and species richness across different scales is the same.

关键词： Elevational gradients Species richness Functional diversity Hengduan mountains

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Simulating Study of Dynamic Load Spectra Identification Method of Machinery in Cepstrum Domain

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Journal of China University of Mining and Technology 2006年第1期16卷 22-24页

作者： hong Cong-hua QIAO Shu-yun WU Miao School of Mechanical and Electrical Engineering China University of Mining ＆ Technology Xuzhou Jiangsu 221008 China Xuzhou Institute of Engineering Xuzhou Jiangsu 221008 China School of Mechanical Electronic and Information Engineering China University of Mining ＆ Technology Beijing 100083 China

Based on the platform of Matlab and the theory of digital signal processing, we propose a method in the cepstrum domain for dynamic load spectra identification of machinery. We demonstrate that the dynamic load spectra can be identified from the response signal of the system, based on cepstra. An ARMA model is built based on the harmonic retrieval by high-order spectra. The coefficients of a Green function are determined and the window width can be estimated. Finally the effectiveness of the method is validated by simulation results.

关键词： cepstrum dynamic load spectrum identification high-order spectra simulation

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Interspecific interference competition between Encarsia formosa and Encarsia sophia （Hymenoptera： Aphelinidae） in parasitizing Bemisia tabaci （Hemiptera： Aleyrodidae） on five tomato varieties

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Insect Science 2011年第1期18卷 92-100页

作者： Shu-Ting Pang Liang Wang Yan-hong Hou Zu-hua Shi Key Laboratory of Molecular Biology of Crop Pathogens and Insects Ministry of Agriculture Institute of Insect Sciences Zhejiang UniversityHangzhou China

Interspecific competition between Encarsiaformosa and Encarsia sophia, two major parasitoids of Bemisia tabaci, and the influence of five tomato varieties on competition outcome were investigated under laboratory conditions. E. formosa parasitized more B. tabaci than E. sophia when in single wasp assays on any of the tomato varieties investigated. When B. tabaei nymphs were exposed to both wasp species （either simultaneously or sequentially）, the number of B. tabaci nymphs parasitized by either wasp species was significantly decreased compared to the sole access condition. Total mortality of B. tabaci was increased when B. tabaci nymphs were exposed to both wasp species compared to only one wasp species. Thus competition between *** and E. sophia apparently reduced parasitoid offspring numbers, but not the efficiency of biological con- trol. In fact, control efficiency was enhanced in some cases, particularly on tomato variety huangtuoyuan （HTY）. When wasps were allowed sequential access to hosts, interference occurred through host feeding by the second wasp, especially if it was E. sophia. The effect of different tomato varieties was not significant.

关键词： Bemisia tabaci Encarsia formosa Encarsia sophia Lycopersicon esculenrum interspecific competition

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Molecular Cloning, and Characterization of an Adenylyl Cyclase-Associated Protein from Gossypium arboreum L.

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Agricultural Sciences in China 2009年第7期8卷 777-783页

作者： WANG Sheng ZHAO Guo-hong JIA Yin-hua DU Xiong-ming Cotton Germplasm Division Cotton Research Institute Chinese Academy of Agricultural Sciences Anyang 455000 P.R.China

The aim of this study was to clone CAP （adenylyl cyclase-associated protein） gene from Gossypium arboreum L. and develop a platform for expressing and purifying CAP protein, which is a base for the construction and function researches of CAP. In this work, a CAP homolog from cotton （DPL971） ovule was identified and cloned. And the cDNA sequence consisted of an open reading frame of 1 416 nucleotides encoding a protein of 471 amino acid residues with a calculated molecular weight of 50.6 kDa. To gain insight on the CAP role in cotton fiber development, the cloned CAP cDNA was expressed. A significant higher yield pure protein was obtained with the chromatographic method. Further experiments showed that the purified protein can bind with the actin in vitro indicating that the recombinant cotton CAP is functional. The procedure described here produced high yield pure protein through one chromatographic step, suitable for further structure-function studies.

关键词： adenylyl cyclase-associated protein CAP cotton fiber protein expression protein purification Gossypiumarboreum L.

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Changes of feeding patterns in Chinese city children under 2 years from 1985 to 2015: results from a series of national cross-sectional surveys

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World Journal of Pediatrics 2019年第2期15卷 176-181页

作者： hua-hong Wu Ya-Qin Zhang Xin-Nan Zong Hui Li Department of Growth and Development Capital Institute of PediatricsYaBao RoadChaoYang DistrictBeijing 100020China

Background In China,as the social transformation and economic development from 1985 to 2015,children's feeding pattern has undergone some *** we aimed to analyze the secular trend on feeding patterns of city children in *** All data were from a series of national survey which implemented once every 10 years in China from 1985 to *** use same indexes to evaluate the feeding pattern of children in these four *** From 1985 to 2005,the exclusive breastfeeding rates in infants under 6 months of age decreased,especially in suburban areas decreased by 17.7%;the continuous breastfeeding rate of 1-year-old children in suburban area decreased from 60.1 to 27.6%.However,from 2005 to 2015,the exclusive breastfeeding rates under 6 months of age increased by 16.0% in urban areas and 5.9% in suburban areas;the continuous breastfeeding rate of 1-year-old children in urban increased from 17.0 to 36.0%.The overall feeding rate of complementary food in infants under 6 months of age declined from 1985 to 2015;the average age at introduction of all complementary foods was around 6 months of age in *** There is an obvious trend on feeding pattern of Chinese *** 1985 to 2005,the breastfeeding rate decreased,the duration time of breastfeeding was shortened and the age at introduction of complementary food was *** 2005 to 2015,the breastfeeding rate increased,the duration time of breastfeeding was prolonged,and the age at introduction of complementary food was postponed.

关键词： Breastfeeding Complementary feeding Infant and young children Secular change

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Decellularized extracellular matrix and mesenchymal stem cells promote recovery in traumatic brain injury by synergistically enhancing neurogenesis and attenuating neuroinflammation

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Journal of Materials Science & Technology 2023年第7期138卷 17-28页

作者： Xuewei Zhang Bixue Wang hua hong Ying Wang Jiashang Liu Changsheng Liu Xi Chen Key Laboratory for Ultrafine Materials of Ministry of Education Frontiers Science Center for Materiobiology and Dynamic ChemistryEngineering Research Center for Biomaterials of Ministry of EducationSchool of Materials Science and EngineeringEast China University of Science and TechnologyShanghai 200237China

Damaged neurons and harsh microenvironments contribute to the injury cascades following traumatic brain injury(TBI).Mesenchymal stem cell(MSC)therapy is considered a viable choice for brain in-jury treatment;however,its clinical use is hindered by limited engraftment,low survival ratio,and uncontrolled ***,the decellularized brain extracellular matrix(dBECM)was prepared through a new method as a delivery system for ***-based hydrogel with favorable biochem-ical and biomechanical features provides a microenvironment for MSCs in nerve *** MSCs-encapsulated dBECM-based hydrogel is shown to improve neuron compensation and structural regen-eration,alleviate neuroinflammation,and promote M1-to-M2 polarization of *** results first demonstrate that the combination of dBECM and MSCs is a critical vehicle to promote TBI repair from neurogenesis and immunoregulation,showing promise for the physiological recovery of neurogenic dis-eases and injuries.

关键词： ECM Stem cells Brain injury Neurogenesis Neuroinflammation

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Numerical simulation of cavitation turbulence in Francis turbine runner with splitter blades

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排灌机械工程学报 2020年第1期38卷 45-51页

作者： WANG Huiyan LIU Xiaobing JIANG Qifeng hua hong OU Shunbing School of Energy and Power Engineering Xihua University

Cavitation will reduce the turbine performance and even damage the turbine *** verify the effects of splitter blades on improving the cavitation performance,the cavitation flow inside a Francis turbine runner with splitter blades was numerically simulated by using the Singhal cavitation model and the standard k-ε turbulence *** distributions of static pressure and gas volume fractions on the surface of the runner blades were predicated under different conditions,and the cavitation in the flow field of the runner was *** results show that the static pressure and gas volume fractions are more uniformly distributed on the short blades than those on the long blades in Francis turbines with splitter blades,and there is almost no cavitation on the short blades;their distributions are more uniform under small flow conditions than those under large flow conditions;and large gas volume fractions are concentrated at the outlet tip near the band on the suction side of the long *** installation of splitter blades can improve the cavitation performance of conventional Francis turbines.

关键词： Francis turbine splitter blades runner cavitation numerical simulation

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Taxonomic Distinctness of Macrofauna as an Ecological Indicator in Laizhou Bay and Adjacent Waters

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Journal of Ocean University of China 2010年第4期9卷 350-358页

作者： ZHOU hong hua Er ZHANG Zhinan College of Marine Life Sciences Ocean University of China Qingdao 266003 P. R. China

In this paper, we assessed the ecological and biodiversity status in the Bohai Sea through a quantitative survey on mac-rofaunal community at 25 stations in Laizhou Bay and adjacent waters in the autumn of *** tested the robustness and effectiveness of taxonomic distinctness as an ecological indictor by analyzing its correlation with species richness and natural environmental variables and by analyzing other ecological indicators (Shannon-Wiener H' and W statistics from Abundance Biomass Comparison curve).Results so obtained indicated that the benthic environment of the study waters in general is not under major impact of anthropogenic disturbance, but some stations in Laizhou Bay and along the coast of the Shandong Peninsula and even in the central Bohai Sea might be moderately disturbed and showed signs of ecological *** taxonomic distinctness measures △+ and Λ+ were independent of sampling effort and natural environment factors and were compliant to other ecological *** application of the taxonomic distinctness indicator to assess marine biodiversity and ecosystem health on a larger regional scale with historical data seems promising.

关键词： Taxonomic distinctness macrofauna ecological indicator biodiversity Laizhou Bay Bohai Sea

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A medical robot for needle placement therapy in liver cancer

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2010年第4期11卷 263-269页

作者： Xing-guang DUAN Gui-bin BIAN hong-hua ZHAO Xing-tao WANG Qiang huaNG Intelligent Robotics Institute Beijing Institute of Technology Beijing 100081 China

Hepatocellular carcinoma (HCC) is the second most common malignancy in *** microwave ablation (MWA) is an effective method for liver cancer,a robotic surgical system with ultrasound-directed was designed to assist surgeons on positioning the *** robotic system includes a surgical robot with 5 degrees of freedom,a workstation for path-planning and image processing,a conventional 2D ultrasound device,and an electromagnetic (EM) tracking *** space,clinical operation requirements and optimal mechanical structure are the key factors to be considered in designing a medical robot suitable for use by *** on the mechanics of the needle placement robot,we have conducted detailed kinematic analysis,including a combined numerical algorithm and coordinate ***,the feasibility of the needle placement robot has been validated by experiment.

关键词： Surgical robot Needle insertion Inverse kinematics Numerical solution

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Large-area chemical vapor deposition-grown monolayer graphene-wrapped silver nanowires for broad-spectrum and robust antimicrobial coating

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Nano Research 2016年第4期9卷 963-973页

作者： Chen Zhao Bing Deng Guanchu Chen Bo Lei hong hua Hailin Peng Zhimin Yan Department of Oral Medicine Peking University School of Stomatology Beijing 100081 China Center for Nanochemistry Beijing Science and Engineering Center for Nanocarbons Beijing National Laboratory for Molecular Sciences . (BNLMS) College of Chemistry and Molecular Engin eefing Peking University Beijing 100871 China

New types of antimicrobial systems are urgently needed owing to the emergence of pathogenic microbial strains that gain resistance to antibiotics commonly used in daily life and medical care. In this study we developed for the first time a broad-spectrum and robust antimicrobial thin film coating based on large-area chemical vapor deposition （CVD）-grown graphene-wrapped silver nanowires （AgNWs）. The antimicrobial graphene/AgNW hybrid coating can be applied on commerdal flexible transparent ethylene vinyl acetate/polyethylene terephthalate （EVA/PET） plastic films by a full roll-to-roll process. The graphene/AgNW hybrid coating showed broad-spectrum antimicrobial activity against Gram-negative （Escherichia coli） and Gram-positive bacteria （Staphylococcus aureus）, and fungi （Candida albicans）. This effect was attributed to a weaker microbial attachment to the ultra-smooth graphene film and the sterilization capacity of Ag＋, which is sustainably released from the AgNWs and presumably enhanced by the electrochemical corrosion of AgNWs. Moreover, the robust antimicrobial activity of the graphene/AgNW coating was reinforced by AgNW encapsulation by graphene. Furthermore, the antimicrobial efficiency could be enhanced to -100% by water electrolysis by using the conductive graphene/AgNW coating as a cathode. We developed a transparent and flexible antimicrobial cover made of graphene/AgNW/EVA/PET and an antimicrobial denture coated by graphene/ AgNW, to show the potential applications of the antimicrobial materials.

关键词： graphene silver nanowires antimicrobial chemical vapor deposition (CVD) electrochemical corrosion

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