Implementation method of Oil and Gas Geologic Information System with ArcGIS Engine

ComGIS is the mainstream of developing GIS currently.Developing Geographic Information System with the technology of components can reduce the difficulties of developing,improving the developing efficiency and enhancing the flexibility and opening of system.ArcObjects(AO) is based on the technology of COM,and ArcGIS Engine(AE) is a set of embedded AO which can extend to various platforms.Compared with AO,ArcGIS Engine can shorten the period of developing and improve the efficiency greatly.Having introduced the techniques of ArcObjects and ArcGIS Engine,we offer the method of developing GIS with Visual Basic and ArcGIS Engine with Oil and Gas Geologic Information System.

Interpretation of remote sensing of geological structures and prediction of gold mineralization in Mohe area and its adjacent region

The authors took the ETM+ multi-spectra data as the data information and correlation coefficient for each band and carried out their information volume statistics.According to certain criteria,the authors also determined the optimum band-combined image.The image clarity is improved by various enhancements and fusions method.Based on remote sensing geological interpretation in detail,the relationship between remote sensing geological characters and gold mine were analyzed systemically.Using all kinds of remote sensing structure information,combining other research data,the authors determined mainly ore-controlling ore structure.Several prospective areas of gold ores were determined and furthermore significant finding mine target areas was confirmed.

Correlations between P2RX1 Expression and Gastrointestinal Cancers Prognosis and Immune Infiltration Based on Bioinformatics Analysis

This study was conducted to explore the correlations between the expression,methylation,and various clinicopathological factors of purinergic P2X1 receptor(P2RX1)and the prognosis of patients with gastrointestinal tumors.The Cancer Genome Atlas(TCGA)and the Genotype-Tissue Expression(GTEx)databases were used to analyze the expression of P2RX1 in different types of gastrointestinal cancers.Kaplan-Meier analysis and univariate Cox regression analysis were used to analyze the correlations between P2RX1 expression and the prognosis of various gastrointestinal tumors.Correlations between P2RX1 expression and N6 methyladenine(m6A)-related genes as well as immune checkpoint genes were analyzed by R packages(R version:4.0.3)based on TCGA database.The association between P2RX1 methylation level and the prognosis of patients with gastrointestinal cancers was analyzed using the MethSurv database.In order to explore the biological functions of P2RX1 in hepatocellular carcinoma,the Kyoto Encyclopedia of Genes and Genomes(KEGG)and Gene Ontology(GO)enrichment analysis were carried out using R software.In order to evaluate the correlations between P2RX1 and tumor immune infiltration,Spearman correlation test was performed.The correlations between P2RX1 expression and immune score as well as immune checkpoint genes were analyzed based on TCGA and Tumor Immune Estimation Resource(TIMER)databases.The expression of P2RX1 was found to be significantly downregulated in gastrointestinal tumors except in cholangiocarcinoma(P<0.05).High expression of P2RX1 tended to present better prognosis in hepatocellular carcinoma(P<0.05).It was noted that cg06475633 of P2RX1 presented a higher methylation level compared with other CpG sites in hepatocellular carcinoma.Overall,six CpGs of P2RX1 were associated with significant prognosis in patients with hepatocellular carcinoma(P<0.05).Among all the 20 m6A-related genes,Wilms'tumor 1-associating protein(WTAP)was the most strongly correlated with P2RX1 in hepatocellular carcinoma.Gene enrichment analysis showed that P2RX1 is widely involved in the proliferation,activation,organization,and differentiation of various immune cells.After investigating the TIMER database,P2RX1 was found to be tightly correlated with immune infiltrating cells in gastrointestinal tumors,especially with dendritic cells.Moreover,P2RX1 was found to be strongly positively associated with programmed cell death 1(PD1),programmed death-ligand 1(PD-L1),and cytotoxic T-lymphocyte-associated protein 4(CTLA4)in hepatocellular carcinoma(P<0.05).In conclusion,the dual role of P2RX1 in cancers and its involvement in the recruitment as well as regulation of tumor infiltrating cells in gastrointestinal cancers may be appreciated through this study.