نتایج جستجو برای: stripping voltametry

تعداد نتایج: 6541  

2006
Yassien M. Temerk Hossieny S. M. Ibrahim Wolfgang Schuhmann

Cathodic adsorptive stripping voltammetry (CASV) was applied for the determination of rutin in pharmaceuticals, human urine, and blood serum. An electrochemical stripping procedure for trace measurements of rutin was developed based on the adsorption of the Cu2þ-rutin complex on a hanging mercury drop electrode and applied to the quantification of the drug. Cyclic voltammetry was used to charac...

2014
Demet Kaya Tülin Taner Derya Germeç - Çakan

Aim: The objectives of this study were to investigate the effects of tooth extraction and air-rotor stripping therapy on tooth-size discrepancy, and to compare the changes between two groups. Materials and methods: The sample comprised the preand post-treatment dental models of 20 postadolescent class I borderline patients. First group was composed of dental models of 10 patients (mean age of 1...

2014
José Carlos d’Ornellas Pereira André Weissheimer Luciane Macedo de Menezes Eduardo Martinelli Santayana de Lima Maurício Mezomo

BACKGROUND The aim of this study is to evaluate the change in pulp chamber temperature during the stripping technique. METHODS Seventy-eight proximal surfaces of 39 extracted human teeth were stripped by two techniques: double-sided perforated stripping disk (PSD) and handheld stripper (HS). The teeth were divided into three groups: incisors (group 1), premolars (2), and molars (3). A J type ...

فرخی کری بزرگ, مهندس مهرداد, واعظی, دکتر فروغ,

ABSTRACT Nowadays, removal of volatile organic compounds (VOCs) from drinking water specially from ground water resources, is considered as a very important act. Many reports have shown the contamination of water resources by these chemicals. Two common method to reduce the concentration of VOCs are air stripping and GAC absorption. Of course, it is necessary to perform pilot study before us...

2011
Ali F. Al-Ghamdi

A sensitive and reliable stripping voltammetric method was developed to determine timolol drug. This method is based on the adsorptive accumulation of the drug at a hanging mercury drop electrode (HMDE) and then a negative sweep was initiated, which yield a well defined cathodic peak at –850 mV versus (Ag/AgCl) silver reference electrode. To achieve high sensitivity, various experimental and in...

Journal: :Pakistan Journal of Medical and Health Sciences 2023

Aim: To comparative analysis of vein stripping versus no in varicose disease. Study design: Comparative study Place and duration study: Department Surgery, CMH Kharian Medical College, from 01-01-2019 to 31-12-2021. Methodology: Eighty cases which were having sapheno-femoral valve incompetence as well perforators-incompetence enrolled. The age the was between 16 70 year. Electrocardiography (EC...

Surface Modifying Macromolecule (SMM) blended PVDF hollow fibers (HFs) were spun at different air-gaps (o to 20 cm) and used for CO2 stripping from aqueous DEA solution and water. The manufactured fibers were first subjected to various characterization tests such as contact angle and critical water entry pressure measurement to evaluate the HF hydrophobicity and wetting resistanc...

Journal: :journal of membrane science and research 0
zabih a. tarsa chemical engineering department, mahshahr branch, islamic azad university, mahshahr, iran s. ali asghar hedayat chemical engineering department, mahshahr branch, islamic azad university, mahshahr, iran masoud rahbari-sisakht chemical engineering department, gachsaran branch, islamic azad university, gachsaran, iran

in this research, process asymmetric polyetherimide hollow fiber membranes using ethanol (0, 2 and 4 wt%) as non-solvent additive in the polymer dope via phase inversion method were fabricated. aqueous solution of 1-methyl-2-pyrrolidine (nmp) (90%) was applied as a bore fluid to avoid inner skin layer formation and water was used as the external coagulant. the morphology of fabricated membranes...

2000
Yutaka Fujita

We have investigated the ram-pressure stripping of disk galaxies in clusters at various redshifts and in cluster progenitors; the clusters grow up on a hierarchical clustering scenario. We consider a radially infalling galaxy whose initial position and velocity are given by a spherical collapse model of structure formation. Moreover, since observations show that the intracluster medium (ICM) of...

امیرحسینی, معصومه , لمیعیان, می نور , نیرومنش, شیرین ,

The present research is a quasi-experimental prospective study to determine usefulness of stripping the fetal memberanes at term for preventing of postterm pregnancy. 212 pregnant women with firm gestational dates entered the study, 112 underwent stripping of the membranes and 100 controls did not. The difference between the number of patients who advanced beyond term (>290 days) was statistica...

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