Papers by Keyword: Distribution

Abstract: This paper analyzed the content, distribution and source of Zn in Jiaozhou Bay in 1982. Results showed that the Zn contents in surface waters in April, June, July and October ranged from 1.75-167.71 μg.L^-1, 8.31-36.97 μg.L^-1, 7.05-12.18 μg.L^-1 and 1.75-5.25 μg.L^-1, respectively. Cu contents in most of the monitoring sites in April were meeting Grade III or Grade IV in National Sea Water Quality Standard (GB 3097-1997). While most of the monitoring sites in June, July and October were meeting Grade I or Grade II. The major Zn sources in the bay was overland runoff, ocean current, and deposition, whose input contents ranged from 37.90-167.71 μg.L^-1, 1.31-36.97μg.L^-1 and 1.75-12.18 μg.L^-1.

Abstract: Study on effects of climate change on species is very popular and necessary at present. This paper investigated the effects of climate change on the distribution of snub-nosed monkey in China using Arcgis and Maxent model. It compared the historical and modern distribution of snub-nosed monkey in China, and evaluated the effects of climate change on Rhinopithecus bieti to explore effects on the distribution of snub-nosed monkey, so as to protect them. Results indicate that the distribution range of snub-nosed monkey has decreased greatly from the previous 17 to 8 provinces. The distribution trends are from north to south, east to west, dense to sparse and form several isolated distribution areas. Moreover, six precipitation variables are identified as having remarkable effects on the habitat suitability of Rhinopithecus bieti and therefore protective actions can be taken accordingly.

Abstract: Heavy metals will be released to the water column during the sediment resuspension, causing the secondary pollution to the water ecosystem. In this study, the sediment collected from Zhushan Bay was placed in three similar pneumatic annular flumes where the wind speeds supplied by blast blowers were 3.21m/s, 5.95m/s and 8.78m/s respectively. The physicochemical parameters of the water and concentrations of metals in the water, plants and sediment were measured during the relevant experiments. The result showed that the concentrations of metals in the overlying water increased while it decreased in the pore water with the hydrodynamic disturbance. The aquatic plant Vallisneria natans bioaccumulated metals in the sediment and water, and the plant roots showed a higher ability in assimilating metals than the leaves. Meanwhile a positive correlation was found between wind speed and release amount of metals in pore water. In addition, the relationship between the wind speed and the biota-sediment accumulation factor (BSAF) was different due to the different features of metals.

Abstract: Distribution is a crucial element of whole steel products supply chain processes, while transport is very important of distribution stage because it generates the high share in total costs. Authors analyze changes in steel products distribution with rising importance of steel producer distribution sites. Then researches effects on transport effectiveness in one of the largest steel distributors in Poland have been presented. Authors pay special attention on detailed key performance indicators of transport in distribution.

Abstract: Industrial and commercial risks associated with the production, supply and commercialization of products and services provided by enterprise have effect not only on the enterprise run and its profitability, but in the extreme cause also on the viability and by that on the future of entire enterprise. Risk conditions create an assumption of enterprise crises which must be prevented.

Abstract: Strategic location of the distribution warehouse is a fundamental role of the strategic business management. The article shows an example of allocation calculations for distribution warehouse using three methods such as – method of axial distance, method of quadratic distance and Cooper’s Iterative Method based on WGS 84 coordinate system. In the final part of the article there are calculated and compared results of an objective function for space allocation.

Abstract: China has huge shale gas resources potential. The exploitation of shale gas can effectively reduce atmosphere pollution and relieve the energy shortage in China. Organic rich shale in pre-Cambrian period mainly lies to North China and Yangtze areas. The shales were developed in continental shelf and restricted marine basin. The distribution is stable with the thickness ranging from 10m-150m. The geochemistry characteristics are favored for shale gas accumulation for pre-Cambrian shale. The shale mineral is mainly quartz and feldspar. The pre-Cambrian formations have favored geological condition for shale gas accumulation. The favored intervals and regions for development of shale gas are Doushantuo shale in Upper Yangtze areas and Hongshuizhuang shale in northern Hebei Province or Jianchang Basin in western Liaoning Province.

Abstract: Spatial distribution of phosphorus in the buffer zone sediments of 16 rivers around Erhai Lake was investigated in July 2013 and different rivers are classified by hierarchical cluster. The average contents of TP, IP, Ca-P and Fe/Al-P were 822.18mg/kg, 602.42mg/kg, 396.79mg/kg and 150.64mg/kg. IP is the dominant mineral form in surface sediments. The order of the average contents of TP and IP conjects to be: West>South>North, West>North>South, respectively. The spatial distribution of TP, Ca-P and Fe/Al-P in the sediments shows a significant positive correlation with that of IP. All 16 investigated rivers are divided into five types according to the hierarchical cluster analysis: Shuangyuanxi River is one type, Zhonghexi River and Mocanxi River are one type, Boluojiang River and Baihexi River are one type, Yangxi River is one type and the other rivers are one type.

Abstract: As the new energy resources including scenery storage have been well accessed into power grid, the operation process of power dispatching and distribution involves the massive, multi type, high complex data which contain the real-time data, plan data, warning and monitoring data, environmental data. Nowadays, the application of big data focused on single analysis of structured and semi-structured data. And the deep learning analysis hasn’t been concerned, transforming power gird data into knowledge is the inevitable trend in the development of smart grid. In this paper, the power dispatching and distribution data were analyzed in detail from the data source, data characteristics, the trend of application etc. According to the new requirement of smart grid now and in the future, the potential application with big data technology was studied in the field of smart grid and the reference opinions was provide by intelligent analysis and decision which are accurate, security, economic, comprehensive optimal features. Finally, to meeting requirement of the power dispatching & distribution data analysis, power dispatching and distribution data system architecture was designed which is an integrated software/hardware, storage-computation-communication trinity. And it was proved that power dispatching and distribution data system architecture have strong supporting, service and safety ability.

Abstract: The distribution of particulate matters is now receiving significant attention given their role in human health and respiratory related diseases. The concentrations of PM10, PM2.5 and PM1.0 were measured in different test points near the road. Two sampling campaigns were conducted in this study. The results indicated that a gradual decrease in the concentrations of particulate matters with distance from the edge of the road. The concentrations of these particulates decreased with the increase of height when the sites were under trees or other vegetations, while the concentrations of these particulates increased with the increase of height when the sites were higher than the height of trees or other vegetations.