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Land use suitability analysis for town development planning in Nanjing hilly areas: A case study of tangshan new town, China

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Journal of Mountain Science 2021年第2期18卷 528-540页

作者： YANG Yang tang Xiao-lan LI zhe-hui College of Landscape Architecture Nanjing Forestry UniversityNanjing 210037China Academy of Chinese Ecological Progress and Forestry Studies Nanjing 210037China

Land use suitability analysis plays an important role in sustainable land use and solving environmental problems caused by rapid urban development.A land use suitability mapping approach for town development planning in hilly areas was constructed based on two multi-criteria evaluation methods:Weighted Linear Combination(WLC)and Ordered Weighted Averaging(OWA),to comparatively evaluate and map land use suitability of tangshan new town in Nanjing,*** evaluation factors related to topographic,environmental,socio-economics and historical sites data were used as suitability *** analytic hierarchy process(AHP)method and GIS techniques were integrated into the evaluation models to create the land use suitability map for town development *** results of WLC approach showed that 11.4%of the total area is highly suitable while the 48.6%is *** results of WLC and OWA approach showed the distribution of degree of land use suitability is almost the *** areas located at the southern and eastern flat regions are highly suitable for land use,whereas the areas close to the mountain forests,steep slopes,waters,and hot springs,have lower suitability for land *** analysis indicated that the suitability results of the two proposed methods are *** validation was achieved by mutual comparison of suitability maps derived from the WLC and OWA *** demonstrated that the overall agreement is 90.81%and kappa coefficient is 0.81,indicating that both methods provide very similar spatial suitability *** overlaying the resultant map with the previous master plan map of tangshan new town,the overlay map once again indicated a satisfactory ecological fit between the two *** last,several recommendations are proposed aiming at improving the long-term town development plan for tangshan new town.

关键词： Town Development Land use suitability Weighted linear combination Ordered weighted averaging Sensitivity analysis tangshan new town

Microstructure and mechanical properties of F_(GBA)/B_G air cooling bainitic steels containing niobium

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International Journal of Minerals,Metallurgy and Materials 2010年第4期17卷 429-434页

作者： Chun Feng Hong-sheng Fang bing-zhe Bai Yan-kang zheng Department of Materials Science and Engineering Tsinghua University Beijing 100084 China

The effect of different Nb additions on the mechanical properties and microstrucmre evolution of grain boundary allotriomorphic ferrite （FGBA） / granular bainite （BG） air cooling bainitic steels was investigated. The results indicate that the tensile strength and yield strength increase by 157 and 97 MPa, respectively with the addition of 0.02wt% Nb. The steel acquires superior strength and toughness with the addition of 0.06wt% Nb. The results of scanning electron microscopy and transmission electron microscopy reveal that the addition of Nb not only refines the size of granular bainite but also increases the volume fraction of granular bainite in FGBA/BG steels. The refinement effect of granular bainite is improved with the increase of Nb content.

关键词： granular bainite microstructure evolution mechanical properties Nb

Atomic Coherent State,Entangled State and Phase Operator for Studying Interference Between Two Bose-Einstein Condensates

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Communications in Theoretical Physics 2008年第11期50卷 1145-1150页

作者： tang Xu-bing FAN Hong-Yi Department of Material Science and Engineering University of Science and Technology of China Hefei 230026 China Department of Physics Shanghai Jiao Tong University Shanghai 200030 China

For studying the interference between two Bose-Einstein condensates we introduce the atomic coherentstate(ACS)in the Schwinger bosonic realization along with the phase operator to directly calculate the interferencepattern with steady relative phase cos φ.Eigenstates of the density operator of condensates are classified as A CS is *** entangled state representation is used in some calculations.

关键词： Bose-Einstein condensate atomic coherent state entangled state phase operator

Monitoring landslide associated with reservoir impoundment using synthetic aperture radar interferometry: A case study of the Yalong reservoir

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Geodesy and Geodynamics 2022年第2期13卷 138-150页

作者： zhe Liu bing Xu Qijie Wang Wenyan Yu Zelang Miao School of Geosciences and Info-Physics Central South UniversityChangsha 410083China

The construction of large reservoirs can address the problem of uneven distribution of rivers in time and space,thereby meeting the needs of human production and ***,the huge elevation of the water level in some areas may modify the distribution of the groundwater level,causing geological disasters,such as surface deformation and *** Yalong reservoir supplies water to the downstream area of Shannan,Tibet;however,since the reservoir started storing water in 2017,the government has discovered two ancient *** this study,to monitor the deformation of the Yalong reservoir since its construction in 2014,we first used synthetic aperture radar(SAR) data and the multidimensional small baseline subset(MSBAS) method to obtain the deformation in the east-west and vertical *** result indicated the presence of three large,slow-moving landslides:Landslides I and II,located on the right bank of the Yalong reservoir,which are consistent with the results obtained by the actual survey,and a new discovery,Landslide Ⅲ,located on the left side of the ***,the experimental results indicated that the dam had undergone obvious deformation after impoundment,which should not be *** global positioning system and interferometric SAR(InSAR) timeseries deformation residual data were used to verify the accuracy of the InSAR *** results also showed that the deformation caused by the three landslides had te nded to accele rate after the rese rvoir’s impoundment,and that the failure mode was retrogressive *** found that InSAR plays a vital role in landslide detection and failure mode research around reservoirs,and assists in providing early warning for subsequent landslide disasters.

关键词： Landslide monitoring Two-dimensional deformation Yalong reservoir SBAS-InSAR

Perinodular ductular reaction/epithelial cell adhesion molecule loss in small hepatic nodules

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World Journal of Gastroenterology 2014年第31期20卷 10908-10915页

作者： Qin Zhang Chuan-Shan Zhang Qi Xin zhe Ma Gui-Qiu Liu bing-bing Liu Feng-Mei Wang Ying-tang Gao Zhi Du Department of Pathology the Third Central Hospital of Tianjin Medical University Department of Gastroenterology and Hepatology the Third Central Hospital of Tianjin Medical University Key Laboratory of Artificial Cell Institute for Hepatobiliary Diseases the Third Central Hospital of Tianjin Medical University Department of Hepatobiliary Surgery Key Laboratory of Artificial Cell Institute for Hepatobiliary Diseases the Third Central Hospital of Tianjin Medical University

AIM: To investigate if loss of epithelial cell adhesion molecule (EpCAM) is associated with microinvasion in hepatocellular carcinomas (HCCs) in the presence of chronic hepatitis B.

关键词： Ductular reaction Epithelial cell adhesion molecule Hepatocellular carcinomas Small hepatic nodule Microinvasion Differential diagnosis

Dynamical fluctuations in fragmentation reactions in a Boltzmann-Langevin approach

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Communications in Theoretical Physics 2022年第11期74卷 140-150页

作者： bing Li Na tang Feng-Shou Zhang Key Laboratory of Beam Technology of the Ministry of Education College of Nuclear Science and TechnologyBeijing Normal UniversityBeijing 100875China Institute of Radiation Technology Beijing Academy of Science and TechnologyBeijing 100875China Center of Theoretical Nuclear Physics National Laboratory of Heavy Ion Accelerator of LanzhouLanzhou 730000China

Based on the isospin-dependent Boltzmann-Langevin model,the dynamical fluctuations in the fragmentation reaction of^(112)Sn+^(112)Sn are *** quadrupole moment and octupole moment with zero magnetic quantum number have large fluctuations in the early time of the *** dynamical fluctuations in momentum space show a strong dependence on the incident *** effects of using different fluctuations on the fragment cross sections are also studied in the fragmentation *** results by using Q_(20)+Q_(30)fluctuation have a better agreement with the experimental *** using Q_(20)+Q_(30)fluctuation produce more proton-rich and neutron-rich nuclei than those using Q_(20)fluctuation ***,the difference between the production cross sections of fragments calculated by using Q_(20)and Q_(20)+Q_(30)fluctuations is larger in the vicinity of the *** results present that the dynamical fluctuations may affect the whole dynamical process of fragmentation reactions including the production of fragments,due to the nonlinear nature of the Boltzmann-Langevin equation.

关键词： fragmentation reactions the isospin-dependent Boltzmann-Langevin model dynamical fluctuations

Identifying and localizing of seismogenic electromagnetic anomalies from data observed by permanent MT stations

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Science China Earth Sciences 2024年第5期67卷 1698-1713页

作者： bing HAN Wenbao HU Guoze ZHAO Ji tang State Key Laboratory of Earthquake Dynamics Institute of GeologyBeijing 100029China Key Laboratory of Exploration Technologies for Oil and Gas Resources of Ministry of Education Yangtze UniversityWuhan 430100China

In this research, an arbitrarily oriented electric dipole at subsurface is used to simulate Seismogenic Electromagnetic(SEM) radiation emanating from a seismic zone during its gestation phase. Analytical synthesis of responses at the Lijiang magnetotelluric(MT) station has revealed that SEM radiation could induce identifiable anomalies in the electromagnetic(EM)spectrum, apparent resistivity and phase within specific frequency bands. Background variations were extracted from long-term observation data of Dali and Lijiang MT stations, enabling the identification of SEM anomalies related to the Yunlong and Yangbi earthquakes. Multiple parameters of dipole sources at subsurface were obtained by applying the Differential Ant Colony Optimization(DACO) algorithm to anomalous data of two stations with multi-frequencies and various response functions. The spatial distribution of these predicted dipoles is predominantly clustered in or around the seismogenic area, with their azimuthal orientation aligning towards the seismogenic fault in general. This study has demonstrated the potential of using subsurface electric dipole simulations for SEM radiation analysis, offering a feasible approach for the prediction and understanding of seismogenic zones.

关键词： MT responses Identifying SEM anomaly Vector electric dipole responses Localizing SEM sources by inversion

A Mn-Series of Oil-Quenched Super-Strength Bainitic Steel With High Hardenability

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Journal of Iron and Steel Research International 2010年第5期17卷 38-43页

作者： ZHANG Han BAI bing-zhe FANG Hong-sheng Laboratory of Advanced Materials Department of Materials Science and EngineeringTsinghua University Beijing 100084 China

A new Mn-series of oil-quenched super-strength bainitic steel was developed on the basis of the alloy system of the original Mn-series air cooled bainitic steel. The mechanical properties of the new steel are well combined while precious alloy elements and complicated technologies are not needed for its production. Experimental results show that bainite/martensite （B/M） dual phase microstructure can be obtained within a very wide cooling rate range and bainite microstructure exists even when the cooling rate reaches as fast as 60 ℃/s; the hardenability of the steel is better than that of 40CrNiMo and 42CrMo; the diameter of the round bar made of the steel is 250 mm, and the round bar tempered at 350 ℃ after oil quenching exhihits its central mechanical properties as follows： Rm = 1 550 MPa, Rp0.2 = 1 270 MPa, A=15%, aku=95 J/cm^2 （at room temperature）.

关键词： bainite oil quenching hardenahility mechanical property martensite

Novel polyethyleneimine/TMC-based nanofiltration membrane prepared on a polydopamine coated substrate

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Frontiers of Chemical Science and Engineering 2018年第2期12卷 273-282页

作者： zhe Yang Xiaoyu Huang Jianqiang Wang Chuyang Y. tang Department of Civil Engineering the University of Hong Kong Hong Kong China

Most commercial NF membranes are negatively charged at the pH range of a typical feed solution. In order to enhance the removal of cations （such as Mg2＋ or Ca2＋）, we utilized polyethyleneimine （PEI） and trimesoyl chloride （TMC） to perform interfacial polymerization reaction on a polydopamine coated hydrolyzed polyacry-lonitrile substrate to obtain a positively charged nanofiltration membrane. Effects ofpolydopamine coating time, PEI concentration, TMC reaction time and concentration on the membrane physicochemical properties and separation performance were systematically investigated using scanning electron microscopy, streaming potential and water contact angle measurements. The optimal NF membrane showed high rejection for divalent ions （93.6±2.6% for MgSO4, 92.4±1.3% for MgCl2, and 90.4±2.1% for Na2SO4）, accompanied with NaCl rejection of 27.8±2.5% with a permeation flux of 17.2±2.8 L.m-2.h-1 at an applied pressure of 8 bar （salt concentrations were all 1000 mg.L-1）. The synthesized membranes showed promising potentials for the applications of water soft-ening.

关键词： nanofiltration polyethyleneimine trimesoyl chloride polydopamine positively charged rejection layer