This report describes the identification of important estrogenic compounds in surface and sediment pore-water samples collected from the Tyne and Tees estuaries (United Kingdom) through the application of toxicity identification evaluation (TIE) procedures. The Tyne and Tees estuaries represent estuaries that have been historically impacted by industrial activities and continue to receive treat...

Abstract. Openly accessible global-scale surface water chemistry datasets are urgently needed to detect widespread trends and problems, help identify their possible solutions, determine critical spatial data gaps where more monitoring is required. Existing limited with respect availability, sample size and/or sampling frequency, geographic scope. These limitations inhibit researchers from tackl...

A rapid and selective method for trace amounts determination of cyclophosphamide in surface water samples has been developed. A solid phase extraction SPE method for extraction and clean-up procedure has been optimized for determination by reversed-phase high-performance liquid chromatography with tandem mass spectrometry. The analyses proceed in the positive ion mode by means of the electrospr...

A method has been developed for collecting air-water interface (AWI) microbes and biofilms that enables analysis of the same sample with various combinations of bright-field and fluorescence light microscopy optics, scanning and transmission electron microscopy (TEM), and atomic force microscopy. The identical sample is then subjected to molecular analysis. The sampling tool consists of a micro...

Naturally-occurring inhibitory compounds are a major concern during qPCR and RT-qPCR analysis of environmental samples, particularly large volume water samples. Here, a standardized method for measuring and mitigating sample inhibition in environmental water concentrates is described. Specifically, the method 1) employs a commercially available standard RNA control; 2) defines inhibition by the...

OBJECTIVE To evaluate the environmental quality of Guiyu, Guangdong impacted by the electronic waste recycling industry. METHODS The surface water, ground water and sediment samples taken separately from two sites that recycle E-wastes and other rubbish relevant to the E-waste recycling, and an agricultural area, were analyzed, and the data were used to evaluate the impact of E-waste recyclin...

The photo-disinfection of natural alkaline surface water (pH 8.6 ± 0.3) for drinking purposes was carried out under solar radiation treatments. The enteric bacteria studied were the wild total coliforms/Escherichia coli (10(4) CFU/ml) and Salmonella spp. (10(4) CFU/ml) naturally present in the water. The photo-disinfection of a 25-l water sample was carried out in a solar compound parabolic col...

The cartographic challenge in many developing world environments suffering a high disease burden is a lack of granular environmental covariates suitable for modeling disease outcomes. As a result, epidemiological questions, such as how disease diffuses at intra urban scales are extremely difficult to answer. This paper presents a novel geospatial methodology, spatial video, which can be used to...

Abstract: Water quality assessment is a multivariate nonlinear system. Based on statistical learning theory, support vector machine (SVM) can transform the learning process into a convex quadratic planning problem to get a global optimization by using the rule of minimum structure risk, which is appropriate to solve small-sample, nonlinear classification and regression issues. Applying SVM in w...

We report on dielectric test measurements of a rectangular flat sample holder which serves as capacitor and is aimed for simultaneous neutron (n-DE) spectroscopy acidic liquid samples. describe technical details the assembly equipment well preparation procedure air sensitive The was characterised off-line from spectrometer by spectroscopy, but using standard IN16B cryofurnace with stick 4-wire ...