نتایج جستجو برای: extraction time 1

تعداد نتایج: 4294492  

Background: The present study was carried out with the aim of extracting trace amounts of zinc in urine samples with ultrasound-assisted emulsification solidified floating organic drop micro-extraction (USAE-SFODME) method by flame atomic absorption spectrometry (FAAS). The efficiency was investigated using the solvent extraction volume, extraction pH, time sonication and temperature extraction...

Journal: :Europace : European pacing, arrhythmias, and cardiac electrophysiology : journal of the working groups on cardiac pacing, arrhythmias, and cardiac cellular electrophysiology of the European Society of Cardiology 2010
Liselot van Erven John M Morgan

This survey has compared attitudes towards (endocardial) lead extraction, among European electrophysiology centres, with special attention paid to 'redundant leads'. The main findings of this survey are: (i) most of the centres performing lead extractions do so in low volume even though the number of implants may be high. (ii) Approaches to the practice of lead extraction are based largely on c...

Journal: :شیلات 0
پروا سفری کارشناس ارشد گروه فرآوری محصولات شیلاتی، دانشکدة علوم دریایی، دانشگاه تربیت مدرس، نور مسعود رضایی استاد گروه فرآوری محصولات شیلاتی، دانشکدة علوم دریایی، دانشگاه تربیت مدرس، دانشکدة علوم دریایی تربیت مدرس، شهرستان نور امیررضا شویک لو استادیار مؤسسة تحقیقات علوم دامی کشور آریا باباخانی استادیار گروه شیلات، دانشکدة منابع طبیعی صومعه سرا، دانشگاه گیلان

chaetomorpha sp is one of the persian gulf green algae which can be a marine source of natural antioxidants such as polyphenols. industrial and economic development of these materials is influenced by effective extraction and application methods. microwave-assisted extraction (mae) and ultrasound-assisted extraction (uae) are novel techniques which have a potential to apply in laboratory with a...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه رازی - دانشکده علوم 1388

abstract sensitive and precise voltammetric methods for the determination of trace amounts of furaldehydes, mainly as furfural (f) and 5-hydroxymethyl-2-furaldehyde (hmf), in waste waters and other matrices is described. determination of total furaldehyde at < ?g g-1 levels in alkaline buffered aqueous media was individually investigated. by the use of ordinary swv and adsorptive square wave ...

Journal: :Journal of clinical microbiology 2008
Andrea Francesconi Miki Kasai Susan M Harrington Mara G Beveridge Ruta Petraitiene Vidmantas Petraitis Robert L Schaufele Thomas J Walsh

Quantitative real-time PCR (qPCR) may improve the detection of fungal pathogens. Extraction of DNA from fungal pathogens is fundamental to optimization of qPCR; however, the loss of fungal DNA during the extraction process is a major limitation to molecular diagnostic tools for pathogenic fungi. We therefore studied representative automated and manual extraction methods for Aspergillus fumigatu...

Journal: Journal of Herbal Drugs 2019
Hasan Ghazali Vardanjani Mehdi Amoheidari Somayeh Taghian

Background & Aim: Sesame is one of the oldest cultivated plants in the world and is one of the oldest oily products used by humans. Sesame oil is an important industrial, oral and medicinal oil. Today, the use of ultrasound has grown significantly due to its effects on food storage and processing. Experimental: In this research, the response level model w...

Afshin Akhonzadeh Basti, Anoshe Sharifan, Behrooz Jannat, Maryam TajAbadi Ebrahimi, Samireh Sabah Sabah,

Superheated water extraction (SWE), is a novel method, used to extract proteins or other bioactive component from agriculture products. Methods: In this study, the extract from quinoa-barley malt (in a proportion of 30:70) was treated by SWE method. The effect of extraction time (15, 30, and 45 min) on physicochemical and functional properties of the extract was determined at 120 ºC. Results: T...

H. Zavvar Mousavi, Z. Dahaghin

In this work for the first time, Fe3O4@SiO2 core-shell nanoparticles functionalized with isatin groups as a magnetic nanosorbent was applied for the simultaneous extraction of trace amounts of cadmium (II). The characterization of this nanosorbentwas studied using Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), and X-ray diffraction (XRD). The effect of seve...

A simple and rapid microextraction procedure based on dispersive liquid-liquid microextraction (DLLME) coupled with gas chromatography-flame ionization detection (GC-FID) was developed for the extraction and analysis of 2-phenylethanol in rose water sample. In the proposed approach, carbon tetrachloride and ethanol were used as extraction and dispersive solvents, respectively. Some important pa...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید