نتایج جستجو برای: including total hardness

تعداد نتایج: 1690301  

Journal: :global journal of environmental science and management 2016
s. sharma r.c. chhipa

water is a unique natural resource among all sources available on earth. it plays an important role in economic development and the general well-being of the country. this study aimed at using the application of water quality index in evaluating the ground water quality innorth-east area of jaipur in pre and post monsoon for public usage. total eleven physico–chemical characteristics; total dis...

2016
Sixtus Bieranye Bayaa Martin Saana Samuel Asiedu Fosu Godfred Etsey Sebiawu Napoleon Jackson Thomas Karikari

BACKGROUND Underground water is an important natural resource serving as a reliable source of drinking water for many people worldwide, especially in developing countries. Underground water quality needs to be given a primary research and quality control attention due to possible contamination. This study was therefore designed to determine the physico-chemical and bacteriological quality of bo...

Journal: :IOP Conference Series: Materials Science and Engineering 2021

Journal: :پژوهش آب در کشاورزی 0

an accurate design of drip irrigation requires water quality analysis that helps attain a better emission uniformity coefficient. this study examined aquifer qualitative parameters in the north of khuzestan province to assess the applicability of groundwater in trickle irrigation systems. for this purpose, interpolation technology was used to map chemical parameters collected from 104 deep well...

Journal: :caspian journal of environmental sciences 2013
m. b. faghir s. shafii

in the present study the freshwater algae of siahdarvishan river were sampled on a montly basis from december 2007 through november 2008. three sampling stations (gaght roudkhan , shahkezr dame and talab laleh ) were chosen in the river. some physical and chemical parameters (water temperature , total hardness , nitrate , nitrite, phosphate and ph) of water samples were measured. a total of 84 ...

Journal: :شیلات 0
کامران رضایی توابع استادیار گروه مهندسی شیلات دانشکدة منابع طبیعی، دانشگاه تهران غلامرضا رفیعی استاد گروه مهندسی شیلات دانشکدة منابع طبیعی، دانشگاه تهران

optimum concentration of vitamin c and hardness at giant freshwater prawn brood-stock tank water has great important on their reproductive quality in recirculation system. the main objective of the present study is investigation on effects of different concentrations of these factors on reproductive parameters of the giant freshwater prawn female brood-stock. for this purpose, at the first expe...

Journal: :Journal of environmental management 2014
Y X Zhao H K Shon S Phuntsho B Y Gao

This study is the first attempt to investigate the effect of total hardness and ionic strength on coagulation performance and the floc characteristics of titanium tetrachloride (TiCl4). Membrane fouling under different total hardness and ionic strength conditions was also evaluated during a coagulation-ultrafiltration (C-UF) hybrid process. Coagulation experiments were performed with two simula...

2011
Ronald W. Armstrong

The industrially-important WC-Co composite materials provide a useful, albeit complicated materials system for understanding the combined influences on hardness and strength properties of the constituent WC particle strengths, the particle sizes, their contiguities, and of Co binder hardness and mean free paths, and in total, the volume fraction of constituents. A connection is made here betwee...

Journal: :Physical review letters 2008
Justin Elser Viktor A Podolskiy

We develop an approach to utilize anisotropic metamaterials to solve one of the fundamental problems of modern plasmonics--parasitic scattering of surface waves into free-space modes, opening the road to truly two-dimensional plasmonic optics. We illustrate the developed formalism on the examples of plasmonic refractor and plasmonic crystal, and discuss limitations of the developed technique an...

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