نتایج جستجو برای: water sample

تعداد نتایج: 939644  

2010
Jothikumar Narayanan Jan Vinjé Theresa Cromeans

OBJECTIVES: The goal of this project was to evaluate nucleic acid extraction techniques to detect different microbial pathogens (e.g., pathogenic viruses, bacteria, bacterial spores, and protozoan parasites) in drinking water using molecular techniques. While numerous nucleic acid extraction kits are commercially available, the composition of these kits is largely proprietary, making it difficu...

1998
D. M. Beals B. S. Crandall P. D. Fledderman

A new method for radionuclide sample analysis of surface water has been demonstrated at the Savannah River Site, a U.S. Department of Energy manufacturing facility, currently in standby. The method makes use of selective solid phase extraction (SPE) disks being placed in a modified portable aqueous sampler. The analytes currently measured by this in-situ preparation are Tc, Sr, Cs and Co. The S...

2008

Answer the question. 3) 100,000 randomly selected adults were asked whether they drink at least 48 oz of water each day and only 45% said yes. Identify the sample and population. A) Sample: all adults ; population: the 100,000 selected adults B) Sample: the 45% of adults who drink at least 48 oz of water; population: all adults C) Sample: the 100,000 selected adults; population: all adults D) S...

Journal: :Bioinformatics 2009
Xiaohua Douglas Zhang Joseph F. Heyse

MOTIVATION For genome-scale RNAi research, it is critical to investigate sample size required for the achievement of reasonably low false negative rate (FNR) and false positive rate. RESULTS The analysis in this article reveals that current design of sample size contributes to the occurrence of low signal-to-noise ratio in genome-scale RNAi projects. The analysis suggests that (i) an arrangem...

Journal: :Materials Today: Proceedings 2021

Drones, also known as unmanned aerial vehicles (UAVs) have been becoming more popular in a variety of industries recent years, and their popularity is growing continually. These UAVs' rapid development implementations offer an efficient solution emerging possibilities for environmental monitoring. UAVs become common method tracking complex processes due to flight scheduling versatility, cost-ef...

Journal: :Journal of the Atomic Energy Society of Japan / Atomic Energy Society of Japan 1976

This work describes the synthesis of a novel magnetic graphene oxide composite for removal of Cr(VI) ions. The synthesized nanosorbent were characterized with various techniques such as FT-IR, X-ray diffraction (XRD), scanning electron microscopy (SEM), elemental analysis and vibrating sample magnetometry (VSM). This material is illustrated to represent a viable sorbent for the removal of Cr(VI...

Afshin Ebrahimi, Fazel Mohammadi-Moghaddam, Hmid Reza Tashauoei, Hossain Ataeifar, Mokhtar Mahdavi, Yaghob Hajizadeh,

Background & Aims of the Study: In some situation like rainfall seasons raw water become very turbid so it affected the water treatment plant processes and quality of produced water. Treatment of very high turbid water has some concerns like precursors for disinfection by-products and very loading rate of particle on filter's media and consequently increases in water consumptio...

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