نتایج جستجو برای: environmental water sample

تعداد نتایج: 1250198  

2016
Xiao-sheng Lin Jie Tang Zhao-yang Li Hai-yi Li

BACKGROUND Liao River basin in Jilin Province is the place of origin of the Dongliao River. This study gives a comprehensive analysis of the vegetation coverage in the region and provides a potential theoretical basis for ecological restoration. METHODS The seasonal variation of vegetation greenness and dynamics based on the Normalized Difference Vegetation Index (NDVI) in major land cover ty...

2016
Tiago M. Alves Eleni Kokinou George Zodiatis Hari Radhakrishnan Costas Panagiotakis Robin Lardner

We present new mathematical and geological models to assist civil protection authorities in the mitigation of potential oil spill accidents in the Eastern Mediterranean Sea. Oil spill simulations for 19 existing offshore wells were carried out based on novel and high resolution bathymetric, meteorological, oceanographic, and geomorphological data. The simulations show a trend for east and north...

Journal: :Public health reports 1952
M D HOLLIS

When we speak of a healthful environment, we think mainly of safe, wholesome, palatable water, of a healthful diet, of clean air, and of shelter for our families where they live, and work, and rest. The need for a healthful environment is common to all peoples: it cuts across boundaries of occupation, race, class, and politics. If it differs from neighborhood to neighborhood, and from region to...

Journal: :Environmental Modelling and Software 2011
David Inman Michiel Blind Irina Ribarova Arno Krause Onno Roosenschoon Ayalew Kassahun Huub Scholten George Arampatzis Geraldine Abrami Brian S. McIntosh Paul Jeffrey

The challenges associated with evaluating the effectiveness of environmental decision support systems (EDSS) based on the perceptions of only a small sample of end-users are well understood. Although methods adopted from Management Information Systems (MISs) evaluation research have benefited from relatively large (100þ) sample sizes, permitting the use of multi-criteria analysis of users perce...

Journal: :Brazilian journal of biology = Revista brasleira de biologia 2015
C Steffens C R Klauck T Benvenuti L B Silva M A S Rodrigues

Worldwide environmental pollution is increasing at the same rate as social and economic development. This growth, however, is disorganized and leads to increased degradation of water resources. Water, which was once considered inexhaustible, has become the focus of environmental concerns because it is essential for life and for many production processes. This article describes monitoring of the...

Journal: :Analytical and bioanalytical chemistry 2012
Francesco Busetti Will J Backe Nina Bendixen Urs Maier Benjamin Place Walter Giger Jennifer A Field

The time-honored convention of concentrating aqueous samples by solid-phase extraction (SPE) is being challenged by the increasingly widespread use of large-volume injection (LVI) liquid chromatography-mass spectrometry (LC-MS) for the determination of traces of polar organic contaminants in environmental samples. Although different LVI approaches have been proposed over the last 40 years, the ...

A. Negharestani, F. Iranmanesh, H. Salmani Marvast, M. Malakootian,

Background: Radioactive substances are water chemical contaminants. In this study, the concentration of radon was measured in drinking water supplies of Taft villages (part of Dehshir-Baft fault located in central part of Iran) and also Shirkooh area with granite rocks (containing uranium). Materials and Methods: This cross sectional research was conducted in fall 2013 and winter 2014 on the so...

2016
Vahid Noroozi Karbasdehi Sina Dobaradaran Abdolhamid Esmaili Roghayeh Mirahmadi Fatemeh Faraji Ghasemi Mozhgan Keshtkar

In this data article, we evaluated the daily fluoride contents in 20 household desalinators working by reverse osmosis (RO) process in Bushehr, Iran. The concentration levels of fluoride in inlet and outlet waters were determined by the standard SPADNS method using a spectrophotometer (M501 Single Beam Scanning UV/VIS, UK). The fluoride content in outlet waters were compared with EPA and WHO gu...

Journal: :The Science of the total environment 2017
Katherine M Kinder Christopher A Gellasch James S Dusenbury Thomas C Timmes Thomas M Hughes

Globally, drinking water resources are diminishing in both quantity and quality. This situation has renewed interest in Condensation Water From Air (CWFA) technology, which utilizes water vapor in the air to produce water for both potable and non-potable purposes. However, there are currently insufficient data available to determine the relationship between air contaminants and the rate at whic...

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