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What are the keys to influence the life satisfaction of eco-migrants in the northern foot of the Qilian Mountains?A test based on the livelihood risk interaction

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Journal of Mountain Science 2022年第11期19卷 3227-3245页

作者： WANG Ya zhou li-hua Key Laboratory of Desert and Desertification Northwest Institute of Eco-environment and ResourcesChinese Academy of SciencesLanzhou 730000China Institutes of Science and Development Chinese Academy of SciencesBeijing 100190China School of public policy and management University of Chinese Academy of SciencesBeijing 100049China

Eco-migrants'ability to adapt to livelihood risks and their satisfaction with lives directly affect the ecological and economic benefits of ecological migration *** formulate an effective livelihood risk prevention system and welfare guarantee mechanism,we took the ecomigrants in Wuwei City as an example,developed an integrated analytical framework for life satisfaction and employed linear regression models to identify the interactions between livelihood risk and life *** findings indicate that 94.66%of eco-migrants in Wuwei City are threatened by livelihood risks after *** living expenses,poor quality of redistributed production goods,and re-poverty constitute the main *** risk multiplicity index is *** cultural types,there are no significant differences in regions and livelihoods.A total of 55.73%of eco-migrants are satisfied with their lives,with the liangzhou district scoring the *** for satisfaction with development potential and public services,no significant intergroup differences were found among regions and livelihood ***-migrant's life satisfaction is significantly affected by livelihood ***-migrants'satisfaction with living income,social integration,farmer-friendly policies and overall life is negatively affected by the risk of repoverty and inadequate social *** ecomigrant's satisfaction with development potential and community construction is not influenced by one type of risk alone,but the interaction between risks has a strong *** interaction of welfare risks with economic risks and policy risks will balance and weaken the adverse effects of a single risk on those elements in the economic and policy *** study offers novel ideas for rural revitalization,hollow governance,and well-being assurance.

关键词： Eco-migrant livelihood risk life satisfaction Northern foot of Qilian Mountain

Fabrication of high nitrogen austenitic stainless steels with excellent mechanical and pitting corrosion properties

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International Journal of Minerals,Metallurgy and Materials 2009年第4期16卷 387-392页

作者： hua-bing li zhou-hua Jiang Yang Cao Zu-rui Zhang School of Materials and Metallurgy Northeastern University Shenyang 110004 China

A series of high nitrogen austenitic stainless steels were successfully developed with a pressurized electroslag remelting furnace. Nitride additives and deoxidizer were packed into the stainless steel pipes, and then the stainless steel pipes were welded on the surface of an electrode with low nitrogen content to prepare a compound electrode. Using Si3N4 as a nitrogen alloying source, the silicon contents in the ingots were prone to be out of the specification range, the electric current fluctuated greatly and the surface qualities of the ingots were poor. The surface qualities of the ingots were improved with FeCrN as a nitrogen alloying source. The sound and compact macrostructure ingot with the maximum nitrogen content of 1.21wt% can be obtained. The 18Cr18Mn2Mo0.9N high nitrogen austenitic stainless steel exhibits high strength and good ductility at room temperature. The steel shows typical ductile-brittle transition behavior and excellent pitting corrosion resistance properties.

关键词： high nitrogen austenitic stainless steels electroslag remelting nitrogen alloying ductile-brittle transition pitting corrosion resistance

Ultra-Pure Ferritic Stainless Steels-Grade,Refining Operation,and Application

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Journal of Iron and Steel Research International 2007年第4期14卷 24-30页

作者： YOU Xiang-mi JIANG zhou-hua li hua-bing School of Materials and Metallurgy Northeastern University Shenyang 110004 Liaoning China

The grades of ultra-pure ferritic stainless steels, especially the grades used in automobile exhaust system, were reviewed. The dependence of properties on alloying elements, the refining facilities, and the mechanism of the reactions in steel melts were described in detail. Vacuum, strong stirring, and powder injection proved to be effective technologies in the melting of ultra-pure ferritic stainless steels. The application of the ferritic grades was also briefly introduced.

关键词： ultra-pure ferritic stainless steel interstitial element stabilizing element automobile exhaust system SS-VOD VOD-PB VCR

Thermodynamic Calculation of Inclusion Formation in Mg-Al-Si-O System of 430 Stainless Steel Melts

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Journal of Iron and Steel Research International 2011年第2期18卷 14-17页

作者： JIANG zhou-hua li Shuang-jiang li Yang School of Materials and Metallurgy Northeastern University Shenyang 110004 Liaoning China

A phase diagram was drawn through thermodynamic calculation to understand the equilibrium conditions of 2MgO · SiO2 , MgO · Al2O3 , 3Al2O3 · 2SIO2, and 2MgO·2Al2O3 · 5SiO2 formation in Mg-AI-Si-O system of 430 stainless steel melts at 1873 K. Further, the thermodynamic formation and transformation conditions of MgO · Al2O3 inclusion were discussed. The following results are obtained when ws, =0.26% and wo = 1.0 × 10^-5 in molten steel. The uniphase cordierite inclusion is difficult to exist stably; MgO· At203 inclusion cannot he formed in case of wAl being less than 1× 10^- 6 ; 3Al2O3 · 2SiO2 would change to MgO· Al2O3 and 2MgO · SiO2 in turn with increasing the Mg content when wAl is above 1.7× 10^- 6 ; with the formation of MgO · Al2O3 inclusion, A1 content increases with increasing Mg content when wMg is over 1. 7 × 10^- 9. For equilibrium condition and calculated steel composition, 2MgO·SiO2 inclusion would be formed ultimately and MgO · Al2O3 is almost inexistent.

关键词： phase diagram thermodynamic calculation MgO · Al2O3 inclusion 430 stainless steel

Pitting corrosion and crevice corrosion behaviors of high nitrogen austenitic stainless steels

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International Journal of Minerals,Metallurgy and Materials 2009年第5期16卷 517-524页

作者： hua-bing li zhou-hua Jiang Yan Yang Yang Cao Zu-rui Zhang School of Materials and Metallurgy Northeastern University Shenyang 110004 China

Pitting corrosion and crevice corrosion behaviors of high nitrogen austenitic stainless steels （HNSS） were investigated by electrochemical and immersion testing methods in chloride solution, respectively. The chemical constitution and composition in the depth of passive films formed on HNSS were analyzed by X-ray photoelectron spectrum （XPS）. HNSS has excellent pitting and crevice corrosion resistance compared to 316L stainless steel. With increasing the nitrogen content in steels, pitting potentials and critical pitting temperature （CPT） increase, and the maximum, average pit depths and average weight loss decrease. The CPT of HNSS is correlated with the alloying element content through the measure of alloying for resistance to corrosion （MARC）. The MARC can be expressed as an equation of CPT=2.55MARC-29. XPS results show that HNSS exhibiting excellent corrosion resistance is attributed to the enrichment of nitrogen on the surface of passive films, which forms ammonium ions increasing the local pH value and facilitating repassivation, and the synergistic effects of molybdenum and nitrogen.

关键词： high nitrogen austenitic stainless steel pitting corrosion crevice corrosion nitrogen critical pitting temperature syner-gistic effect

Intergranular corrosion behavior of high nitrogen austenitic stainless steel

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International Journal of Minerals,Metallurgy and Materials 2009年第6期16卷 654-660页

作者： hua-bing li zhou-hua Jiang Zu-rui Zhang Yang Cao Yan Yang School of Materials and Metallurgy Northeastern University Shenyang 110004 China

The intergranular corrosion （IGC） behavior of high nitrogen austenitic stainless steel （HNSS） sensitization treated at 650-950℃ was investigated by the double loop electrochemical potentiodynamic reactivation （DL-EPR） method. The effects of the electrolytes, scan rate, sensitizing temperature on the susceptibility to IGC of HNSS were examined. The results show that the addi-tion of NaCl is an effective way to improve the formation of the cracking of a passive film in chromium-depleted zones during the reactivation scan. Decreasing the scan rate exhibits an obvious effect on the breakdown of the passive film. A solution with 2 mol/L H2SO4＋1 mol/L NaCl＋0.01 mol/L KSCN is suitable to check the susceptibility to IGC of HNSS at a sensitizing temperature of 650-950℃ at a suitable scan rate of 1.667 mV/s. Chromium depletion of HNSS is attributed to the precipitation of Cr2N which results in the susceptibility to IGC. The synergistic effect of Mo and N is suggested to play an important role in stabilizing the passive film to prevent the attack of IGC.

关键词： intergranular corrosion high nitrogen austenitic stainless steel sensitization passive film chromium depletion

Label-free quantitative proteomics reveals fibrinopeptide B and heparin cofactorⅡas potential serum biomarkers in respiratory syncytial virus-infected mice treated with Qingfei oral liquid formula

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Chinese Journal of Natural Medicines 2018年第4期16卷 241-251页

作者： zhou li-hua XU Jian-Ya DAI Chen FAN Yi-Man YUAN Bin Jiangsu Key Laboratory of Pediatric Respiratory Disease Nanjing University of Chinese MedicineNanjing 210023China College of Medicine and life Sciences Nanjing University of Chinese MedicineNanjing 210023China Experimental Teaching Center of life Science Nanjing Agrieultural UniversityNanjing 210095China Department of Pediatrics Jiangsu Province Hospital of Chinese Medicine Affiliated Hospital of Nanjing University of Chinese

Respiratory syncytial virus(RSV) is a leading cause of acute lower respiratory tract infections. Qingfei oral liquid(QFOL), a traditional Chinese medicine, is widely used in clinical treatment for RSV-induced pneumonia. The present study was designed to reveal the potential targets and mechanism of action for QFOL by exploring its influence on the host cellular network following RSV infection. We investigated the serum proteomic changes and potential biomarkers in an RSV-infected mouse pneumonia model treated with QFOL. Eighteen BALB/c mice were randomly divided into three groups: RSV pneumonia model group(M), QFOL-treated group(Q) and the control group(C). Serum proteomes were analyzed and compared using a label-free quantitative LC-MS/MS approach. A total of 172 protein groups, 1009 proteins, and 1073 unique peptides were successfully identified. 51 differentially expressed proteins(DEPs) were identified(15 DEPs when M/C and 43 DEPs when Q/M; 7 DEPs in common). Classification and interaction network showed that these proteins participated in various biological processes including immune response, blood coagulation, complement activation, and so forth. Particularly, fibrinopeptide B(FpB) and heparin cofactor Ⅱ(HCII) were evaluated as important nodes in the interaction network, which was closely involved in coagulation and inflammation. Further, the Fp B level was increased in Group M but decreased in Group Q, while the HCII level exhibited the opposite trend. These findings not only indicated FpB and HCII as potential biomarkers and targets of QFOL in the treatment of RSV pneumonia, but also suggested a regulatory role of QFOL in the RSV-induced disturbance of coagulation and inflammation-coagulation interactions.

关键词： Qingfei oral liquid Respiratory syncytial virus-infected mouse pneumonia model Label-free quantitative proteomics Potential serum biomarkers RSV-host interaction network

Robust Disaster Recovery System Model

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Wuhan University Journal of Natural Sciences 2006年第1期11卷 170-174页

作者： WANG Kun SU Rui-dan li Zeng-xin CAI Zhen zhou li-hua Key Laboratory of Computer Network and Information Security of the Ministry of Education Xidian University Xi＇ an 710071 Shaanxi China National Information Security Engineering and Technology Research Center Beijing 100093 China

Highly security-critical system should possess features of continuous service. We present a new Robust Disaster Recovery System Model （RDRSM）. Through strengthening the ability of safe communications, RDRSM guarantees the secure and reliable command on disaster recovery. Its self-supervision capability can monitor the integrality and security of disaster recovery system itself. By 2D and 3D rea-time visible platform provided by GIS, GPS and RS, the model makes the using, management and maintenance of disaster recovery system easier. RDRSM possesses predominant features of security, robustness and controllability. And it can be applied to highly security-critical environments such as E-government and bank. Conducted by RDRSM, an important E-government disaster recovery system has been constructed successfully. The feasibility of this model is verified by practice. We especially emphasize the significance of some components of the model, such as risk assessment, disaster recovery planning, system supervision and robust communication support.

关键词： continuous service E-government information security disaster recovery high availability risk assessment data backup

A case study of air quality control in Beijing and the surrounding area during the 2015 World Championships and Parade

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Atmospheric and Oceanic Science Letters 2017年第3期10卷 252-260页

作者： zhou li-hua ZHANG Xing-Ying ZHANG Jing ZHU Si-Guang MENG Xiao-Yang College of Global Change and Earth System Sciences Beijing Normal University National Satellite Meteorological Center China Meteorological Administration

Based on satellite observations, the effects of emission reduction measures on air pollutants （NO2 （nitrogen dioxide）, SO2 （sulfur dioxide）, and aerosols） were estimated in Beijing and its surroundings during the 2015 World Championships and Parade （WCP） held in Beijing. Compared with the same period in the previous three years （2012-2014）, the tropospheric vertical column densities of NO2 and SO2 in 2015 were significantly reduced in Beijing and its surroundings. During the WCP, aerosol optical depth was reduced most significantly in Beijing, while NO2 and SO2 were reduced most significantly in Hebei and Tianjin, respectively. The meteorological conditions were also favorable during this period. During the WCP, the North China Plain was located under high pressure from the north of China. A southward pressure gradient force and weak northerly and northeasterly winds blocked the transport of pollution from southern and western parts of the industrial area （Hebei, Shanxi and Shandong provinces）. Cold air masses pushed southwards weakly. These conditions were beneficial to the removal of air pollutants in Beijing.

关键词： Parade air quality satellite observation emission control meteorological factor