نتایج جستجو برای: hydrochemical data
تعداد نتایج: 2411112 فیلتر نتایج به سال:
بیمه گران همیشه بابت خسارات بیمه نامه های تحت پوشش خود نگران بوده و روش هایی را جستجو می کنند که بتوانند داده های خسارات گذشته را با هدف اتخاذ یک تصمیم بهینه مدل بندی نمایند. در این پژوهش توزیع های فیزتایپ در مدل بندی داده های خسارات معرفی شده که شامل استنباط آماری مربوطه و استفاده از الگوریتم em در برآورد پارامترهای توزیع است. در پایان امکان استفاده از این توزیع در مدل بندی داده های گروه بندی ...
Background and Objective: Surface water is usually highly variable in chemical composition due to contact with different geological formationsand other surface and groundwater resources. Knowledge on water quality and the impact of human activities are particularly important for sustainable management and planning of water resources. The aim of this study was to investigate the physicochemical...
The objective is to identify the spatial and temporal variability of the hydrochemical quality of the water column in a subtropical coastal system, Daya Bay, China. Water samples were collected in four seasons at 12 monitoring sites. The Southeast Asian monsoons, northeasterly from October to the next April and southwesterly from May to September have also an important influence on water qualit...
Water quality assessment in pastoral of Tibetan Plateau, which is water sources for about 40% of world's population and the runoff-yield area of Yellow rivers, is very important. In this paper, Xiahe county which belongs to Tibetan Plateau pastoral was investigated. Six parameters(via, chloride, COD, ammonia nitrogen, nitrate, fluoride, sulfate) were selected to assess the water quality and hea...
This paper presents CAMEL, a spatially-distributed conceptual model for simulating reactive transport of phosphorus from diffuse sources at the catchment scale. A catchment is represented in the model using a network of grid cells and each grid cell is comprised of various conceptual storages of water, sediment and phosphorus. To allow for reactive transport processes of phosphorus between grid...
Introduction: Hydrochemical properties of waters used in balneotherapy are very important, as they play a key role in success or failure of this kind of treatment. There are 30 mineral and hot spas in Hormozgan Province, Southern Iran, which are traditionally used for treating diseases. In this study, hydrochemical properties of Fotoyeh and Sanguyeh Springs, in western Hormozgan Province, are d...
Abstract. Since the Quaternary Period, paleo-seawater intrusions have been suggested to explain observed saline groundwater that extends far inland in coastal zones. The Luanhe River delta (northwest coast of Bohai Sea, China) is characterized by distribution saline, brine, brackish, and fresh from coastline inland. this region exhibits a wide range total dissolved solids (TDS): 0.38–125.9 g L−...
The escalating issues of worldwide energy scarcity and environmental contamination have brought geothermal resources into the spotlight as a sustainable eco-friendly alternative. circum-Wugongshan belt has abundant at medium-low temperature, offering significant potential for development utilization. In this study, samples groundwater, cold spring water, surface water were collected from wester...
Based on the observation of geochemical characteristics 19 hot springs in Litang Fault Zone (LFZ) from 2010 to 2019, major elements, trace and stable isotopes were investigated, a conceptual model ground fluid circulation LFZ was established. The main hydrochemical type spring water samples is HCO3−-Na+. δ2H values range −157.6‰ −123.4‰ δ18O −24.5‰ −15.4‰. fault zone mainly recharged by infiltr...
Massively parallel sequencing has provided a more affordable and high-throughput method to study microbial communities, although it has mostly been used in an exploratory fashion. We combined pyrosequencing with a strict indicator species statistical analysis to test if bacteria specifically responded to ethanol injection that successfully promoted dissimilatory uranium(VI) reduction in the sub...
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