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NDVI is an indicator of the best coverage in the growth status of vegetation, and is considered the most effective indicator. Based on the composite spatial resolution data proposed by NASA, the composite resolution is in the recent past. The maximum value reached over the years is 250m. A large number of correlation analysis methods are used to summarize the synthetic mean values ​in the extraction and analysis of basic information. At the same time, the growth of plants in different seasons of each year is also studied as well as changes in vegetation and its correlation with climate factors. The vegetation coverage in Wushan area has a certain influence on climate factors. Research has found that wireless sensor network is a relatively new type of multi-disciplinary high-tech technology, mainly composed of many kinds of sensor nodes, so that each user can use it at any time and place. Based on reliable information and data, far-reaching research and consideration can be carried out on the overall characteristics of the land in the region and the global climate environment. In real life, the technological development and innovation of enterprises are in a certain leading position and play a major role. However, due to many factors such as market power and geographical location, there are also differences in each different region. In terms of regional industries, the phenomenon of agglomeration will become the actual carrier of technological innovation and economic growth, but in fact, in the spatial study of China’s economic convergence and technological innovation, it is found that in the industrial economy and technology of each district, the innovation of the company is directly related to the geographical distribution.

BackgroundObesity has been reported to lead to increased incidence of depression. Glycerol-3-phosphate acyltransferases 4 (GPAT4) is involved in triacylglycerol synthesis and plays an important role in the occurrence of obesity. GPAT4 is the only one of GPAT family expressed in the brain. The aim of this study is to investigate if central GPAT4 is associated with obesity-related depression and its underlying mechanism.ResultsA high-fat diet resulted in increased body weight and blood lipid. HFD induced depression like behavior in the force swimming test, tail suspension test and sucrose preference test. HFD significantly up-regulated the expression of GPAT4 in hippocampus, IL-1β, IL-6, TNF-α and NF-κB, accompanied with down-regulation of BDNF expression in hippocampus and ventromedical hypothalamus, which was attributed to AMP-activated protein kinase (AMPK) and cAMP-response element binding protein (CREB).ConclusionOur findings suggest that hippocampal GPAT4 may participate in HFD induced depression through AMPK/CREB/BDNF pathway, which provides insights into a clinical target for obesity-associated depression intervention.

This paper puts forward a remote sensing digital image enhancement based on lossless panning bidirectional stretching. The effective pixel in remote sensing digital image will be panning to 128 according to its brightness mean and then perform lossless bidirectional contrast stretching on remote sensing image. Then, the image is taken as data foundation after it is enhanced by lossless false color composite. The data foundation is improved during principal component analysis and the principal component analysis is used for removal treatment on abnormal interference factors. Finally, the second main component image with effective removal of abnormal interference factor will be selected. Discrete wavelet transform is used for edge detection and abnormal region delineation according to edge detection and geoscience in experiment region to obtain more accurate geological detection forecast map.

The rapid development of urbanization, urban engineering survey has a huge impact, traditional urban reconnaissance production management tools has exposed its limitations, geographic information systems involved, unprecedented space for development of urban engineering survey. How to effectively and scientifically manage huge engineering survey data, how to quickly achieve high-quality engineering survey data collection, timely new history, retrieval and query, how to quickly implement engineering survey data graphs, tables, etc. output, these are city engineering survey the core issue of most concern. In this paper, many of the above problems, for the urban engineering survey of the characteristics of the survey and analysis of the data, the completion of the survey data classification and coding, standardized survey data, the establishment of urban engineering survey database, on this basis, the completion of the city engineering survey and design of information systems and realized.

Riboflavin is employed as the photosensitizer of a novel photopolyrner material for holographic recording, This material has a broad absorption spectrum range (More than 200nm) due to the addition of this dye. The experimental results show that our material has high diffraction efficiency and large refractive index modulation. The maximum diffraction efficiency of the photopolymer is about 56%. The digital data pages are stored in this medium and the reconstructed data page has a good fidelity, with the bit-error-ratio of about 1.8 X 10(-4). it is found that the photopolymer material is suitable for high-density volume holographic digital storage.

The general model for calculating active power line conditioner (APLC) output compensation currents is introduced. A detailed solution algorithm for the general model is presented, which is based on a genetic algorithm. The validity of the solution methodology is shown by a practical example. Finally, an effective way to satisfy the fast response of APLC output compensation is proposed, when bus harmonic voltages are of a dynamic and random nature.