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Shanghai synchrotron radiation facility

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National Science Review 2014年第2期1卷 171-172页

作者： jianhua he Zhentang Zhao Shanghai Institute of Applied Physics Chinese Academy of Sciences

Synchrotron radiation was discovered by chance at an electron synchrotron accelerator in *** irst experiments applying synchrotron radiation were conducted in the early 1960s,with measurements using synchrotron radiation for standards and as a source for ultraviolet wavelength *** radiation later atracted considerable interest for use in solid-state physics *** increased development of both facilities and applications,a surge of interest in synchrotron

关键词： SSRF In Shanghai synchrotron radiation facility

Identifying Restructuring Types of Rural Settlement Using Social Network Analysis:A Case Study of Ezhou City in Hubei Province of China

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Chinese Geographical Science 2021年第6期31卷 1011-1028页

作者： YUE Qiaobing he jianhua LIU Dianfeng School of Resource and Environmental Sciences Wuhan UniversityWuhan430079China Key Laboratory of Geographic Information Systems Ministry EducationWuhan430079China

Social interaction has become one of the key factors affecting the spatial reconstruction of rural settlements(SRRS).However,most studies ignored the multi-scale impact of social networks on the identification of restructuring types of rural *** paper,taking Ezhou City of Hubei Province,China as the case study area,developed a potential inter-settlement network through considering settlements as nodes,and inter-settlement interactions induced by the spatial disparity of public facilities as edges,divided towns in Ezhou City into three zones based on community structure at the town level,and then identified four types of rural settlements in light of the characteristics of cluster patterns and centrality at the patch *** results show that the inter-settlement network in Ezhou City presents apparent disparities in terms of community structure,cluster patterns and *** community analysis,high inter-community and intra-community interactions are concentrated in well-developed areas in the north and east,while weak interactions between communities occur in the southern areas dominated by traditional agricultural ***,three zones are divided such as the urban-leading zone,urban-rural integration zone and rural-leading *** the network centrality and cluster patterns,high-level rural settlements are mainly distributed in the urban-leading zone,followed by the urban-rural integration zone and the rural-leading ***,the lump cluster pattern is observed in each zone,but the chain pattern and dispersed pattern largely occur in the rural-leading *** same time,four types of rural settlements are identified,namely urbanized settlements,central settlements,grassroots settlements and relocated *** corresponding plans are discussed in different zones regarding urbanization,integration and characteristics to provide meaningful insights for policymakers to guide *** study would contribute to our understan

关键词： rural settlement reconstruction public service facility inter-settlement network spatial differences zonal division

Use of probiotics and botanical extracts to improve ruminant production in the tropics: A review

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Animal Nutrition 2018年第3期4卷 241-249页

作者： Muhammed A.Arowolo jianhua he College of Animal Science and Technology Hunan Agricultural University

Ruminant production, especially in the tropics and developing countries suffers a setback when compared with the temperate and developed countries, which is attributable to the kinds of available feed resources in the region of production. In the tropics, ruminants are restricted to grazing on low-quality forages, crop residues and agro-industrial by-products with very little or no concentrate diets, which adversely affect the animals in exhibiting their full production potential. Considering this fact, there is an increasing interest in improving the digestibility of these feed resources. In recent years, researchers have explored several methods to enhance the functions of rumen microflora, improve digestion and fermentation processes, as well as increase bioavailability and utilization of nutrients through feed supplementation. This review aims to explore the positive effects of supplementation of ruminant diets with probiotics or botanical extracts and their metabolites on the productivity of the animals. Moreover, the functions of these non-pathogenic and non-toxic live microorganisms(probiotics) and plant biologically active compounds(botanical extract)are explored because of the ban on non-therapeutic use of antibiotics as growth promoters coupled with the critical preference of consumers to high quality and safe animal products. It has been reported that these alternative supplemental products have a beneficial impact on both animal health and productivity, which is affecting stabilization of rumen environment, inhibition of pathogenic bacteria proliferation in gastrointestinal tract, modulation of immune response, increase in fibre degradation and fermentation, nutrients availability and utilization, animal growth performance and milk production, among others. However,long-term in vivo studies are still required to determine the synergetic effects of these 2 safe supplemental products.

关键词： Ruminant Supplementation Probiotics Botanical extracts Tropics

Exploring the spatio-temporal impacts of farmland reforestation on ecological connectivity using circuit theory:A case study in the agro-pastoral ecotone of North China

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Journal of Geographical Sciences 2020年第9期30卷 1419-1435页

作者： LIU Xiaojing LIU Dianfeng ZHAO Hongzhuo he jianhua LIU Yaolin School of Resource and Environmental Science Wuhan UniversityWuhan 430079China Key Laboratory of Digital Cartography and Land Information Engineering Ministry of Natural ResourcesWuhan UniversityWuhan 430079China Collaborative Innovation Center for Geospatial Information Science Wuhan UniversityWuhan 430079China

Farmland reforestation can contribute substantially to ecological *** studies have extensively examined the ecological effects of farmland reforestation,but few of them have investigated the spatiotemporal responses of broad-scale landscape connectivity to *** using a typical agro-pastoral ecotone in northern China as a case study,we addressed this issue based on an innovative integration of circuit theory approach and counterfactual *** forest connectivity through multiple dispersal pathways was measured using the circuit theory approach,and its spatiotemporal changes after reforestation were evaluated by counterfactual *** results showed that from 2000–2015,the reforested farmland occupied 2095 km^2,and 12.5% was on steeply sloped *** reforestation caused a greater increase in ecological connectivity by adding new ecological corridors and stepping stones in scattered forest areas rather than in areas with dense forest *** newly added corridors and stepping stones were fragmented,short and narrow and thus deserve powerful *** reforestation to improve landscape connectivity should highlight pinch point protection and obstacle removal as well as the tradeoff between farmland loss and farmer *** findings are expected to inform the optimization of the Grain for Green policy from the perspective of broad-scale biodiversity conservation.

关键词： farmland reforestation ecological connectivity circuit theory land use change agro-pastoral ecotone China

Land-Use Spatial Optimization Based on PSO Algorithm

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Geo-Spatial Information Science 2011年第1期14卷 54-61页

作者： MA Shifa he jianhua LIU Feng YU Yan School of Resource and Environmental Science Wuhan University 129 Luoyu Road Wuhan 430079 China Key Laboratory of Geographic Information System Ministry of Education Wuhan University 129 Luoyu Road Wuhan430079 China School of Resource and Environmental Engineer Wuhan University of Technology 122 Luoshi Road Wuhan 430070 China

The optimization of land-use spatio-structure is one of the most important areas of land use management;constructing a spatial optimization model that is based on the micro spatial unit in a bottom-up mode plays an important role in coupling the quan-tity structure and spatial structure *** objective of this research is to develop a land use spatial optimization model based on particle swarm optimization to make spatial decision in land use *** model is implemented using real data-sets to emulate the process of spatial structure optimization in order to get the best landscape pattern under the control of decision *** results revealed that the particle swarm optimization model has the ability to utilize the quantity and spa-tial ***,the result demonstrated that it can be used to stimulate the landscape pattern in designing the appropriate optimization environment,which could land quantity target to the basic spatial units effectively and provide appropriate spa-tio-structure for regional land use space layout decision making.

关键词： PSO land-use spatial allocation intelligent agent GIS

Inhibitory effect of blue honeysuckle extract on high-fat-diet-induced fatty liver in mice

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Animal Nutrition 2018年第3期4卷 288-293页

作者： Ming Liu Jijun Tan Ziyu he Xi he De-Xing Hou jianhua he Shusong Wu Core Research Program 1515 Hunan Collaborative Innovation Center for Utilization of Botanical Functional Ingredients Hunan Agricultural University The United Graduate School of Agricultural Sciences Kagoshima University

Blue honeysuckle is rich in polyphenols, and recently receiving attention because of its potential antioxidant and anti-inflammatory properties. Nonalcoholic fatty liver disease(NAFLD) is the leading cause of chronic liver disease that develops hepatic inflammation and metabolic syndrome. The present study aims to study the effect of blue honeysuckle extract(Bhe) on fat deposition and hepatic lipid peroxidation in a high-fat-diet(HFD)-induced mouse model. Mice were fed a normal diet(ND) or a HFD containing 0.5% or 1% of Bhe or not for 45 d. Liver sections were stained by hematoxylin-eosin *** lipids were measured by a clinical analyzer. Insulin was examined by ELISA, and hepatic proteins were detected by Western blotting. Dietary supplementation of Bhe dose-dependently suppressed HFD-induced obesity and hepatic fat deposition. Moreover, Bhe improved glucose metabolism by increasing insulin sensitivity and attenuated oxidative stress potentially by up-regulating nuclear factor(erythroid-derived 2)-like 2(Nrf2)-mediated pathway.

关键词： Blue honeysuckle Polyphenols Fatty liver Lipid peroxidation Antioxidant

Dietary protocatechuic acid ameliorates inflammation and up-regulates intestinal tight junction proteins by modulating gut microbiota in LPS-challenged piglets

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Journal of Animal Science and Biotechnology 2021年第1期12卷 328-339页

作者： Ruizhi Hu Ziyu he Ming Liu Jijun Tan Hongfu Zhang De-Xing Hou jianhua he Shusong Wu Hunan Collaborative Innovation Center for Utilization of Botanical Functional Ingredients College of Animal Science and TechnologyHunan Agricultural UniversityChangsha 410128China Department of Food Science and Biotechnology Faculty of AgricultureKagoshima UniversityKagoshima 890-0065Japan Beijing China-Agri HongKe Bio-Technology Co. Ltd.Beijing 102206China State Key Laboratory of Animal Nutrition Institute of Animal SciencesChinese Academy of Agricultural SciencesBeijing 100193China.

Background: Weaning is one of the major factors that cause stress and intestinal disease in piglets. Protocatechuic acid(PCA) is an active plant phenolic acid which exists in Chinese herb, Duzhong(Eucommia ulmoides Oliver), and is also considered as the main bioactive metabolite of polyphenol against oxidative stress and inflammation. This study aimed to investigate the effect of PCA on growth performance, intestinal barrier function, and gut microbiota in a weaned piglet model challenged with lipopolysaccharide(LPS).Methods: Thirty-six piglets(Pig Improvement Company line 337 × C48, 28 d of age, 8.87 kg ± 0.11 kg BW) were randomly allocated into 3 treatments and fed with a basal diet(CTL), a diet added 50 mg/kg of aureomycin(AUR), or a diet supplemented with 4000 mg/kg of PCA, respectively. The piglets were challenged with LPS(10 μg/kg BW) on d 14 and d 21 by intraperitoneal injection during the 21-d experiment. Animals(n = 6 from each group) were sacrificed after being anesthetized by sodium pentobarbital at 2 h after the last injection of LPS. The serum was collected for antioxidant indices and inflammatory cytokines analysis, the ileum was harvested for detecting mRNA and protein levels of tight junction proteins by PCR and immunohistochemical staining, and the cecum chyme was collected for intestinal flora analysis using 16 S rRNA gene ***: Dietary supplementation of PCA or AUR significantly increased the expression of tight junction proteins including ZO-1 and claudin-1 in intestinal mucosa, and decreased the serum levels of thiobarbituric acid reactive substances(TBARS) and IL-6, as compared with CTL group. In addition, PCA also decreased the serum levels of IL-2 and TNF-α(P he Firmicutes/Bacteroidetes ratio(P he genus level revealed that PCA reduced the relative abundance of Prevotella 9, Prevotella 2, Holdemanella, and Ruminococcus t

关键词： Gut microbiota Inflammation Piglets Protocatechuic acid Tight junction proteins

Road Centrality and Landscape Spatial Patterns in Wuhan Metropolitan Area,China

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Chinese Geographical Science 2015年第4期25卷 511-522页

作者： LIU Yaolin WANG Huimin JIAO Limin LIU Yanfang he jianhua AI Tinghua School of Resource and Environment Science Wuhan University Key Laboratory of Geographical Information System Ministry of Education Wuhan University

Road network is a corridor system that interacts with surrounding landscapes,and understanding their interaction helps to develop an optimal plan for sustainable transportation and land *** study investigates the relationships between road centrality and landscape patterns in the Wuhan Metropolitan Area,*** densities of centrality measures,including closeness,betweenness,and straightness,are calculated by kernel density estimation(KDE).The landscape patterns are characterized by four landscape metrics,including percentage of landscape(PLAND),Shannon′s diversity index(SHDI),mean patch size(MPS),and mean shape index(MSI).Spearman rank correlation analysis is then used to quantify their relationships at both landscape and class *** results show that the centrality measures can reflect the hierarchy of road network as they associate with road *** analysis exhibit that as centrality densities increase,the whole landscape becomes more fragmented and *** the class level,the forest gradually decreases and becomes fragmented,while the construction land increases and turns to more ***,these findings indicate that the ability and potential applications of centrality densities estimated by KDE in quantifying the relationships between roads and landscapes,can provide detailed information and valuable guidance for transportation and land-use planning as well as a new insight into ecological effects of roads.

关键词： road centrality landscape patterns kernel density estimation(KDE) landscape metrics Wuhan Metropolitan Area China

Ground State Transition of (p,t) Reactions on Ni Isotopes

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Chinese Physics Letters 1991年第8期8卷 388-391页

作者： YANG Jinqing JIANG Dazhen ZHANG Yingji ZHANG Jie he jianhua CheNG Xiaowu Shanghai knstit ute of Nuclear Research Academia SinicaShanghai 201800

Angular distributions of ^(58,60,62,64)Ni(p,t)ground state transitions at E_(p)=25MeV have been measured and compared with distorted wave Born approximation *** enhancement factors for four Ni isotopes have been *** between the enhancement factors and the predictions of interacting boson approximation model has been *** is found that a value of Ω_(v)=6 is needed to describe the experimental result in SU(5)calculation.

关键词： calculation approximation Transition