نتایج جستجو برای: and removal
تعداد نتایج: 16849197 فیلتر نتایج به سال:
There are many urological and non-urological indications which require bilateral double J stenting. We describe a point of technique for simultaneous removal of both the Double J stents. Both the stents are held by stent removing forceps at a point where they cross each other and then removed in one go with the help of cystoscope. Medline search did not reveal any techniques of removing two DJ ...
Introduction: Untreated leachate is being discharged into the environment in many countries worldwide. Leachate treatment methods have not been unified so far due to variable composition of leachate in different sites. Lack of control as well as disregarding leachate treatment and disposal of it can cause environmental pollution. This study aimed to investigate the Coagulants' effect on the COD...
In this study, montmorillonite clay was used as the adsorbent for the removal of Aniline Blue dye, from aqueous solution by the batch adsorption technique under different conditions. The maximum removal of aniline blue dye for initial dye concentration 20 mg/L was more than 95% at optimum conditions (pH=4.5, contact time=30 min, and adsorbent dosage=2 g/L). The data of this study were fitted wi...
in this study, amine functionalized kit-6 silica mesoporous magnetite nanocomposite (nh2-mmnc) was synthesized by chemical methods and used as an efficient and recoverable adsorbent for removal of ponceau 4r, as a toxic dye, from aqueous solutions. the synthesized nanocomposites were characterized by xrd, ft-ir, bet and sem instruments. the effect of various experimental parameters on the dye r...
using tidal potential, the effect of tide on the gravity field, crustal deformation due to tidal force, and gravity variations resulted from the crustal deformation are presented. tidal potential is divided into constant and periodic (diurnal and semi-diurnal) constituents, and for each constituents crustal displacements in radial, south-north, and east-west directions are computed. the aforeme...
Background and Objectives: New studies indicate that nitrate concentration in groundwater is increasing in most cities. High concentrations of nitrate in water increase the potential health risk in the community and the environment. In infants, No3 _ is reduced to No2 _, which combines with hemoglobin in the blood to form met hemoglobin leading to blue-tinged blood for babies under six months o...
Dye-containing wastewater is one of the main environmental challenges that can cause health issues. It is crucial to remove the dyes from wastewater before its discharge into the environment. This study aims to evaluate the efficiency of aptenia cordifolia mucilage in removal of anionic dyes from textile wastewater via coagulation and flocculation process. To this goal, the effect of different ...
Background and Objective: Antibiotics are a group of emerging contaminants in the aquatic environment. Antibiotic residues threaten the human health and ecosystem in the low concentrations found in the environment. Hence, the present work has been conducted to investigate the occurrence and removal efficiency of most prescribed antibiotics including amoxicillin, penicillin, cefixime, cephalexin...
Background and Objectives: Pollution of water resources to nitrate is an environmental problem in many parts of the world. This problem possibly causes diseases such as methemoglobinemia, lymphatic system cancer and Leukemia. Hence, nitrate control and removal from water resources is necessary. Considering that application of nanomaterials in treatment of environmental pollutants has becom...
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