• Development of a suitcase time-of-flight mass spectrometer

    (2)Electric Power Research Institute, Guangxi Power Grid Corporation, Nanning, 530023, China. RATIONALE: Sulfur hexafluoride (Sulfr hexafluoride ) gas-insulated switchgear (GIS) is an essential piece of electrical equipment in a substation, and the concentration of the sf 6 decomposition products are directly relevant to the security and reliability of the substation.

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  • Effects of gaz sf6 decomposition components and concentrations on

    Eects of insulating gas decomposition and insulation defects in GIS equipment Yuan Zhuang1, Xiaotong Hu1, Bin Tang2, East China Normal University, Shanghai 200241, China.

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  • The Chinese Health System At A Crossroads | Health Affairs

    A decomposition analysis for China 9 January 2019 | BMJ Open, Vol. 9, No. 1 GIS‐based method to delimit spheres of influence for a medical consortium: Experience of a pediatric medical

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  • Spatiotemporal analysis and forecasting model of hemorrhagic

    Using GIS-based spatial statistics, we investigated the spatial distribution of HFRS cases and identified provinces with high endemic HFRS and clustering patterns. From 2004 to 2015, the high endemic areas of HFRS have changed from northeastern China (traditional epidemic areas) towards the middle and southeast parts of China.

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  • Studies on the Situation of Soil Organic Carbon Storage in

    Key words: Northeast of China, Soil, Soil organic carbon, Simulation model QIU Jian-jun, Professor, Ph D, Tel: 86-10-68919625-804, E-mail: [email protected] INTRODUCTION The three provinces in Northeast of China, Heilongjiang, Jilin and Liaoning, are the important agricultural pro-duction bases in China, they cover 115 × 104 ha land

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  • Feng, Kuishuang | GEOG | Geographical Sciences Department

    Dr. Feng is an Ecological Economist. His research is focused on consumption-based environmental accounting at local, national, and global scales. His expertise is in spatial ecological-economic modeling with regards to sustainable production and consumption, scenario analysis and evaluation of environmental issues.

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  • Pools and distributions of soil phosphorus in China

    50 cm of soil in China by using a combination of total and available P information from more than 2400 soil profiles and a map of soil types at a resolution of 1:1,000,000. Our estimates indicate that the average total P density and available P density in China are about 8.3 102 g/m3 and 5.4 g/m3, respectively. The total national soil P pool in the

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  • Assessing Alternatives for Mitigating Net Greenhouse Gas

    China has approximately 20% of the world’s rice paddies and 31% of the world’s rice production (FAO, 2004). Over the past two decades, midseason drainage as an alternative water management approach has been adopted throughout China (Shen et al., 1998; Ministry of Water Resources and Utilization of China, 1996). In

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  • Deceleration of China’s human water use and its key drivers

    Apr 07, 2020 · Decomposition of structural changes in both irrigation and industrial sectors corresponded to increase water use by 5.0%, primarily due to the increased water uses for growing rice in south and wheat in north China as well as thermoelectric power industry in east China (SI Appendix, Fig. S7).

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  • HIEN DOMINH - Remote sensing and GIS technology, natural

    Mar 13, 2019 · View HIEN DOMINH’S profile on LinkedIn, the world’s largest professional community. HIEN has 2 jobs listed on their profile. See the complete profile on LinkedIn and discover HIEN’S connections and jobs at similar companies.

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  • How to Apply the Geospatial Data Abstraction Library (GDAL

    wise decomposition: (a) I/O requests from only two processes using GDAL to access a 2 × 4 raster array with column-wise decomposition (from the viewpoint of the user); (b) the actual I/O requests in case a); and (c) a large number of small I/O requests by each process with column-wise decompo-sition of a large raster data array in reality

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  • Offering system integration for grid solutions

    to Guquan in China Operator: State Grid Corporation of China (SGCC) Distance of 3,284 kilometers with a transmission capacity of twelve gigawatts Ordering Year: 2016 Key project facts HVDC Transformers • Design and manufacturing of 4 different transformer types • World´s first 1100 kV UHVDC transformer

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  • Author: "Wang, Qiang" - PubAg Search Results

    China and India are the countries with the largest increase in carbon emissions and one of the fastest growing economies in the world. A better understanding of the carbon emissions embodied in China-India trade can service to curb carbon emission in both countries.

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  • Prevalence of haemorrhagic fever with renal syndrome in

    Geographical information system (GIS) mapping for incidence of HFRS. To conduct a GIS-based analysis of the spatial distribution of HFRS, a prefecture-level polygon map at 1:1000 000 scale was obtained, on which the prefecture-level point layer that contained information regarding latitudes and longitudes of central points of each prefecture was created.

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  • Read "China and Global Change: Opportunities for

    Create geographic information systems (GIS) for research areas. Study structure, function, and dynamics of forest ecosystems, including population structure and dynamics, energy exchange, nutrient cycling, and hydrological and meteorological functions. Make ecological models describing structure, function, and dynamics of ecosystems.

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  • Landscape Elements and Hantaan Virus–related Hemorrhagic

    in China based on geographic information system (GIS) spatial analysis (11) and found areas where the population had a high risk of acquiring the disease. That study dem-onstrated a new approach to integrating such tools into the epidemiologic study and risk assessment of HFRS. Our objective for the current study was to identify the

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  • Decomposing Mechanism of Sulfr hexafluoride under Positive DC Partial

    The influence of H2O on Sulfr hexafluoride decomposition characteristics under positive DC partial discharge (PD) is significant. To evaluate PD fault severity in DC Sulfr hexafluoride-insulated equipment using the production characteristics of sf6 gas decomposition components, the corresponding relationship and mathematical expression between the production of insulating gas decomposition components and the H2O content should be

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  • Decomposition Properties of C4F7N/N2 Gas Mixture: An

    The insulation characteristics and decomposition components of C4F7N/N2 gas mixture, a potential substitute for insulating gas, were first explored by breakdown experiments/gas chromatography–mass spectrometer. The structural properties of C4F7N molecule and the decomposition mechanism of C4F7N/N2 gas mixture were analyzed based on the density functional theory calculation and ReaxFF molecular dynamics

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  • Data-driven exploration of ‘spatial pattern-time process

    The I M-curve was then filtered using a discrete wavelet transform implemented by MatLab (with Daubechies db3 as mother wave and four decomposition levels). In this way, the curve was decomposed into a low-frequency component ( a 4 ) and high-frequency components ( d 1 , d 2 , d 3 , d 4 ) (Fig. 2 ).

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  • 8DJH 24 | Systems | Siemens Global

    The 8DJH portfolio has now been expanded by the 8DJH 24 - blue GIS. Just like all other switchgear types of the Siemens “blue” portfolio, this switchgear also uses the insulating medium Clean Air, which exclusively consists of natural elements of the ambient air and is free of F-gases.

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  • Chenglin Liu - Geographic Information Systems Analyst

    Made decomposition of requirements, and established the data analysis model of the detailed list and analysis sheet. 3. Created the plan processing, access, and subscribe Business Intelligence

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  • GEOG | Geographical Sciences Department | University of Maryland

    MS GEOINT students Allie Cahanin and Katherine Toren won the Grand Prize in UMD Data Challenge 2021. The UMD Data Challenge ( datachallenge.ischool.umd.ed) is an annual, week-long data exploration event hosted by The UMD College of Information Studies, where participants gain analytical experience, build technical aptitude, and obtain team-building experience.

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  • Landscape Elements and Hantaan Virus–related Hemorrhagic

    It was first recognized in northeastern China in 1931 and has been prevalent in many other parts of China since 1955. At present, HFRS is endemic in 28 of 31 provinces of the People’s Republic of China, autonomous regions, and metropolitan areas and accounts for 90% of the HFRS cases reported globally . The disease has taken a heavy toll on the health of the Chinese people, having been responsible for 1.2 million symptomatic infections and 44,300 deaths from 1950 to 1997.

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  • A dengue fever predicting model based on Baidu search index

    1 School of Medicine, Wuhan University of Science and Technology, Wuhan, China. 2 School of Geography and Information Engineering, China University of Geosciences, Wuhan, China. 3 State Key Laboratory of Virology, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, China. 4 National Engineering Research Center for GIS, Wuhan, China.

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  • Spatial access to residential care resources in Beijing, China

    Aug 09, 2012 · The second part of the paper systematically reviews the existing literature on the concept of access to health care and social services, geographic distribution and policy implications for residential care, and the application of GIS-based measurements of spatial access to health care and social services in English-speaking countries and China.

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  • NDVI-derived forest area change and its driving factors in China

    Oct 17, 2018 · China’s mean forest area during the study period was estimated to be approximately 1.69×10 8 hm 2, with a forest coverage of 17.62%. China’s forest area showed a reverse J-shape at the province level . Among 31 provinces, most (18) was less than 5 million hectares in forest area, 4 were larger than 10 million hectares, and others ranged

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  • A. Name and Contact Information - UNC Charlotte FAQ

    2001 M.S., Department of Geography, Nanjing University, Nanjing, China Open Web-based GIS 1998 B.S., Department of Geography, East China Normal University, Shanghai, China The Calculation of Shortest Paths in GIS 1998 B.S. (Minor), International Trade, East China Normal University, Shanghai, China C. Academic Positions Held

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  • Dr. Yulong Zhang | Remote Sensing and Ecological Modeling Group

    Linking litter production, quality and decomposition to vegetation succession following agricultural abandonment. Soil Biology Biochemistry, 57: 803-813. C Ye, X Cheng, Y Zhang, Z Wang, Q Zhang, 2012. Soil nitrogen dynamics following short-term revegetation in the water level fluctuation zone of the Three Gorges Reservoir, China.

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  • Inclusion of soil carbon lateral movement alters terrestrial

    Nov 28, 2014 · Third, the chemical or physical breakdown of soil at the detachment and transport processes increases decomposition of SOC 12. China is one of the strongest soil erosion areas and its area-average

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  • ‪Ge Lin‬ - ‪Google Scholar‬

    Using Thematic Mapper data for change detection and sustainable use of cultivated land: a case study in the Yellow River delta, China GX Zhao, G Lin, T Warner International Journal of Remote Sensing 25 (13), 2509-2522 , 2004

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