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Journal of Mountain Science 2022年第8期19卷 2202-2213页

作者： bao Fang QIU jian School of Architecture Southwest Jiaotong UniversityChengdu 611756China China Railway Eryuan Engineering Group Co. Ltd.Chengdu 610031China

Identifying the ecological vulnerability of the sensitive and fragile ecosystem of the Ya’anQamdo section along the southern route of the Sichuan-Tibet transport corridor is of paramount importance to reduce environmental damage resulting from infrastructure *** paper divided the Ya’an-Qamdo transport section into 22subzones according to their ecological environment *** on the vulnerability evaluation model established by the fuzzy matter-element analysis method,the eight main assessment indicators of ecological vulnerability were windstorm,rainstorm,snowstorm,extreme temperature,extreme air pressure,geological hazard,natural conditions,and social *** rating and ranking of vulnerability in each subzone were based on the weight of the judgment *** processes were used to verify the rationality of both the indicators themselves and their *** results of this study show that subzone 9,located in the subalpine cold and humid forest and scrubland zone,is the most vulnerable,and subzone 1,located in the low-to mid-land warm and humid forest zone,is the least *** conclusion of the study suggests that targeted measures of ecological protection should be formulated before development and construction of major transportation *** should evade the most vulnerable areas,and in-depth research on ecological restoration should be carried out in low-to midvulnerability areas so that the ecological environment along the route can be protected effectively for sustainable economic and social development.

关键词： Ecosystem Vulnerability Subzone Sichuan-Tibet transportation corridor

Mn evaporation and denitrification behaviors of molten Mn steel in the vacuum refining with slag process

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International Journal of Minerals,Metallurgy and Materials 2021年第8期28卷 1288-1297页

作者： jian-hua Chu Yan-ping bao State Key Lab of Advanced Metallurgy University of Science and Technology BeijingBeijing 100083China

Considering the precise composition control on the vacuum refining of high-Mn steel, the behaviors of both Mn evaporation and nitrogen removal from molten Mn steel were investigated via vacuum slag refining in a vacuum induction furnace. It was found that the reaction interfaces of denitrification and Mn evaporation tend to migrate from the surface of slag layer to the surface of molten steel with the gradual exposure of molten steel during the vacuum slag refining process. Significantly, compared with the experimental group without slag addition, the addition of slag into steel can result in a lower Mn evaporation rate constant of 0.0192 cm·min~(-1) at 370 Pa, while the denitrification rate is almost not affected. Besides, the slag has a stronger inhibitory effect on Mn evaporation than the reduced vacuum pressure. Moreover, the inhibitory effect of the slag layer on Mn evaporation can be weakened with the increase of the initial Mn content in molten steel. The slag layer can work as an inhibitory layer to reduce the Mn evaporation from molten steel, the evaporation reaction of Mn mainly proceeds on the surface of the molten steel. This may be attributed to the Mn mass transfer coefficient for one of reaction at steel/slag interface, mass transfer in molten slag, and evaporation reaction at slag/gas interface is lower than that of evaporation reaction at steel/gas interface. The introduction of slag is proposed for both denitrification and manganese control during the vacuum refining process of Mn steels.

关键词： manganese evaporation denitrification vacuum slag evaporation rate

Progress in climate modeling of precipitation over the Tibetan Plateau

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National Science Review 2020年第3期7卷 486-487页

作者： Qing bao jian Li State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics Institute of Atmospheric PhysicsChinese Academy of Sciences State Key Laboratory of Severe Weather Chinese Academy of Meteorological Sciences

Given the controversy regarding the‘Monsoon Melee’, there is a need for more accurate Tibetan Plateau (TP)climate modeling that clarifies its role in monsoon variations [1]. Because of the unique geographical characteristics of the region, TP climate modeling faces many challenges. One of the largest modeling biases is the overestimation

关键词： Progress in climate modeling of precipitation over the Tibetan Plateau

2D Cadmium Chalcogenides for Optoelectronics

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Chemical Research in Chinese Universities 2020年第4期36卷 493-503页

作者： jin bao ZHAI Tianyou State Key Laboratory of Material Processing and Die&Mould Technology School of Materials Science and EngineeringHuazhong University of Science and Technology(HUST)Wuhan 430074P.R.China

Two-dimensional(2D)cadmium chalcogenides ha ve triggered worldwide interests due to their unique me rits in both structure and physical properties,including thickness-dependent bandgaps,narrow emission line widths high intrinsic absorption coefficient and large absorption cross sections,etc..rendering their great potential for next-generation electronics and optoelectronics *** this article,the progress of 2D cadmium chalcogenides in he past few vears is comprehensivelv *** first discussed several synthetic strategies for various 2D cad mium ***,their optoelectronic applications in photodetectors,lasers,LEDs,and piezoelectric de-vices are summarized and commented in ***,a brief conclusion of the article and the future prospects of the 2D cadmium chalcogenides are provided。

关键词： 2D cadiniimi chalcogenide Synthesis Optoelectronic device Photodetector

Characterization of Clusters in a Novel Nd^(3+)-Doped Polymer Optical Fiber

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Chinese Physics Letters 1998年第4期15卷 272-274页

作者： YANG bao MING Hai ZHANG Qi-jin XIE jian-ping Department of Physics University of Science and Technology of ChinaHefei 230026 Department of Materials Science and Engineering University of Science and Technology of ChinaHefei 230026

A step index-type Nd^(3+) -doped polymer optical fiber(POF)was prepared by using bulk polymerization of solution of Nd^(3+) -octanoate(NOA)and methyl and methacrylate.A method of wide-angle x-ray diffraction was used to measure the solubility of *** a high concentration Nd^(3+) doped POF,a residual absorption at 810nm could not be saturated,which is attributed to the high clustered ion rate in the Nd^(3+) POF.A model based on the rate equations to infer the clustered ion rate by the measurement of transmission is presented.

关键词： POF saturated attributed

Establishment of a multi-cycle generalized Weng model and its application in forecasts of global oil supply

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Petroleum Science 2017年第3期14卷 616-621页

作者： Yi jin Xu Tang Cui-Yang Feng jian-Liang Wang bao-Sheng Zhang School of Business Administration China University of Petroleum Beijing 102249 China

Low oil prices under the influence of economic structure transformation and slow economic growth have hit the existing markets of traditional big oil suppliers and upgraded the conflict of oil production capacity and interest between OPEC producers and other big oil supplier countries such as the USA and Russia. Forecasting global oil production is significant for all countries for energy strategy planning, although many past forecasts have later been proved to be very seriously incorrect. In this paper,the original generalized Weng model is expanded to a multi-cycle generalized Weng model to better reflect the multi-cycle phenomena caused by political, economic and technological factors. This is used to forecast global oil production based on parameter selection from a large sample, depletion rate of remaining resources, constraints on oil reserves and cycle number determination. This research suggests that the world will reach its peak oil production in 2022, at about 4340×10~6 tonnes. China needs to plan for oil import diversity, a domestic oil production structure based on the supply pattern of large oil suppliers worldwide and the oil demand for China＇s own development.

关键词： Oil production Multi-cycle Generalized Weng model Energy strategy

Suspended particle effects on ClO_2/ultraviolet light combined disinfection of effluent

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Journal of Environmental Sciences 2006年第4期18卷 634-638页

作者： WANG jian-ling WANG bao-zhen WANG Lin ZHANG jin-song HUANG Wen-zhang School of Municipal and Environmental Engineering Harbin Institute of Technology Harbin 150090 China School of Environmental Science and Engineering Ocean University of China Qingdao 266003 China Shenzhen Water （Group） Co. LTD.Shenzhen 518031 China

The concentration of suspended solids of effluent often varies in a wide range, therefore the dose of ultraviolet light （UV） in disinfection process needs to be adjusted to meet the disinfection criterion at a high frequency, and the desired disinfection effect is difficult to be ensured. The particles size and particle-associated fecal coliform （F.C.） contribution, and their influence on UV disinfection were investigated when ClO2 and UV combined disinfection process was used. The results showed that suspended solids content had a major impact on UV disinfection efficiency, especially the large particle size fraction. Particles （D〉10μm） associated F. C. were difficult to be disinfected and were the main part of the railings of F.C. inactivation curve. Pre-ClO2 oxidation could reduce the number of particles in effluent, and make large particles decrease to small ones. Therefore, the influence of particles on UV disinfection could be reduced after pre-ClO2 oxidation, and the resistance ability to particle loadings of combined process was enhanced. Moreover, the combined process has a lot of advantages, such as low toxicity, low operational/maintenance costs; it is also convenient to be established in the existing wastewater plant or the new planned one.

关键词： effluent disinfection bio-toxicity UV disinfection ClO2/UV combined disinfection

Research on Water-Exit and Take-off Process for Morphing Unmanned Submersible Aerial Vehicle

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China Ocean Engineering 2017年第2期31卷 202-209页

作者： HU Jun-hua XU bao-wei FENG jin-fu QI Duo YANG jian WANG Cong Engineering College of Aeronautics and Astronautics Air Force Engineering University Flying Instructor Training Base Air Force Aviation University

This paper presents a theoretic implementation method of Morphing Unmanned Submersible Aerial Vehicle （MUSAV）, which can both submerge in the water and fly in the air. Two different shapes are put forward so that the vehicle can suit both submergence and flight, considering the tremendous differences between hydrodynamic configuration and aerodynamic configuration of a vehicle. The transition of the two shapes can be achieved by using morphing technology. The water-to-air process, including water-exit, morphing, take-off and steady flight, is analyzed. The hydrodynamic and aerodynamic model of the vehicle exiting the water surface obliquely and then taking off into the air has been founded. The control strategy after morphing is analyzed and the control method is given. Numerical method is used to validate the motion model of the water-exit process. Results of simulations show the validity of the proposed model and the feasibility of MUSAV in theory.

关键词： Morphing Unmanned Submersible Aerial Vehicle (MUSAV) water-to-air process dynamic model flight control

CXC CHEMOKINE RECEPTOR 3 MODULATES BLEOMYCIN-INDUCED PULMONARY INJURY VIA INVOLVING INFLAMMATORY PROCESS

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Chinese Medical Sciences Journal 2006年第3期21卷 152-156页

作者： jin-ming Gao bao Lu Zi-jian Guo Department of Respiratory Medicine Peking Union Medical College Hospital Chinese Academy of Medical Sciences ＆ Peking Union Medical College Beijing 100730 Ina Sue Perlmutter Laboratory Division of Pulmonary Children＇s Hospital Department of Medicine Harvard Medical School Boston MA 02115

Objeelive To investigate the role of CXC chemokine receptor 3 （ CXCR3 ） in bleomycin-induced lung injury by using CXCR3 gene deficient mice. Methods Sex-, age-, and weight-matched C57BL/6 CXCR3 gene knockout mice and C57BL/6 wide type mice were challenged by injection of bleomycin via trachea. Lung tissue was stained with HE method. Airway resistance was measured. Bronchoalveolar lavage （BAL） was performed using phosphate buffered saline twice, cell number and differentials were counted by Diff-Quick staining. Interleukin （IL）-4, IL-5, IL-12p40, and interfon-~ in BAL fluid and lung homogenate were measured by enzyme-linked immunosorbent assay. Unpaired t test was explored to compare the difference between two groups. Results On day 7 after bleomycin injection via trachea, CXCR3 knockout mice were protected from bleomycininduced lung injury as evidenced by fewer accumulation of inflammatory cells in the airway and lung interstitium compared with their wild type littermates （ P 〈 0. 05 ）. Airway resistance was also lower in CXCR3 knockout mice compared with wild type mice （P 〈 0. 01 ）. Significantly lower level of inflammatory cytokines release, including the altered production of IL-4 and IL-5 both in BAL fluid and lung tissue was seen in CXCR3 knockout mice than in wild type mice （both P 〈0. 05）. Conclusion CXCR3 signaling promotes inflammatory cells recruiting and initiates inflammatory cytokines cascade following endotracheal bleomycin administration, indicating that CXCR3 might be a therapeutic target for pulmonary injury.

关键词： chemokine receptor bleomycin lung injury inflammation

Solvothermal-assisted assembly of MoS2 nanocages on graphene sheets to enhance the electrochemical performance of lithium-ion battery

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Nano Research 2020年第4期13卷 1029-1034页

作者： Dafang He Yi Yang Zhenmin Liu jin Shao jian Wu Shun Wang Liming Shen Ningzhong bao State Key Laboratory of Material-Oriented Chemical Engineering College of Chemical EngineeringNanjing Tech UniversityNanjing210009China Institute of NBC Defence Beijing 102205China

An ordered hollow M0S2 nanocages/RGO nanocomposite is constructed by a simple solvothermal-assisted assembly method combined with freeze-drying and *** this novel nanostructure,hollow M0S2 nanocages are homogeneously distributed on graphene sheets with a tight bond of *** nanosized and hollow MoS2 nanocages can effectively accommodate the huge volume change during charge/discharge process and increase the number of electrochemical reaction active sites,accelerating the kinetics of lithiation/*** tight C-O-Mo bond between graphene and MoS2 further reinforces the structural stability,thus improve the electrical conductivity and substantially enhance the lithium storage performance of M0S2 anode *** a result,this novel nanocomposite shows a long-cycle stability of 717.4 mAh·g^-1 after 800 cycles at a high current density of 3 A·g^-1,exhibiting great potential as an anode nanocomposite for advanced lithium-ion batteries.

关键词： nanocomposites M0S2 nanocages graphene lithium-ion battery