in this research, the groundwater quality of hoz–e–soltan lake and its catchment was studied for drinking, domestic and irrigation uses according to different parameters. this lake with 195 km2 catchment area is located 85 km of southwest of tehran–qom highway. in order to investigate groundwater quality characteristics in the study area, 34 data from water of well belong to 2008 selected to pr...

Sulfated titania nanoparticles (SO42-/TiO2 NPs) were synthesized using titanium tetraisopropoxide (TTIP) by the sol-gel method. The structure and morphology of the prepared nanocatalyst was characterized using X-ray diffraction (XRD), scanning electron microscopy (SEM) and Brunauer–Emmett–Teller (BET) methods as well as Fourier transform infrared (FT-IR) and energy dispersive X-ray (EDX) spectr...

In order to improve our understanding of the origin and production processes methylamine in atmosphere its contribution particulate WSON, simultaneous measurements size-segregated aerosols gas phase were conducted at a forested site Yamanashi Prefecture, Japan, over one year. The concentration atmospheric that is sum phase, coarse-mode, fine-mode particles was 0.962 ng-N m−3 on average. About 7...

Hydrogen sulfur (H2S) là một trong những khí độc và có mùi trứng thối khó chịu khi chúng hiện diện không khí. Mục tiêu của nghiên cứu này phân lập tuyển chọn vi khuẩn khả năng oxid hóa lưu huỳnh từ chất thải chăn nuôi heo để xử lý hôi. Kết quả đề tài đã được 49 chủng các trại ở Đồng bằng sông Cửu Long. Khảo sát hoạt tính cho thấy, 30/49 (chiếm 61,22%) huỳnh, đó 2 T5 T11 cao nhất với nồng độ sul...

The geochemical characteristics of the hot spring waters in the Rehai and Ruidian geothermal fields, Tengchong County, Yunnan Province, China, are described and their possible environmental impact assessed. The results show that the alkaline spring waters contain high levels of K, Na, F, Cl, SiO2, whereas the only acidic spring water in Rehai geothermal field contains high levels of SO42−, Mn a...

A quantitative analysis of the Cl- dependence of growth of Halobacillus halophilus was performed. Optimal growth rates were obtained at Cl- concentrations of between 0.5 and 2.0 M, and the final yield was also strictly dependent on the Cl- concentration. Br- but not I-, SO42-, NO2-, SO2-, OCN-, SCN-, BO2-, or BrO3- could substitute for Cl-. To analyze the function of chloride, chloride concentr...

Silicon-substituted calcium phosphate (Si-CaP) was developed in our laboratory as a biomaterial for delivery in bone tissue engineering. It was fabricated as a 3D-construct of scaffolds using chitosan-trisodium polyphosphate (TPP) cross-linked networks. In this study, heparin was covalently bonded to the residual -NH2 groups of chitosan on the scaffold applying carbodiimide chemistry. Bonded he...

A novel dot-like Cu2O-loaded TiO2/reduced graphene oxide (rGO) nanoheterojunction was synthesized via UV light reduction for the first time. Cu2O with size of ca. 5 nm was deposited on rGO sheet and TiO2 nanosheets. The products were characterized by infrared spectroscopy, Raman spectrum, UV-Vis diffuse reflectance spectra, XPS techniques, photoluminescence spectra. The results demonstrated tha...

Leachate and groundwater samples were collected from Vendipalayam, Semur and Vairapalayam landfill sites in Erode city, Tamil Nadu, India, to study the possible impact of leachate percolation on groundwater quality. Concentrations of various physicochemical parameters including heavy metals (Cd, Cr, Cu, Fe, Ni, Pb, Fe and Zn) were determined in leachate samples and are reported. The concentrati...