نتایج جستجو برای: extraction method

تعداد نتایج: 1749711  

Journal: :Electronics 2022

Software size is a significant input for software cost estimation, and the implementation of estimation dramatically affects results efficiency estimation. Traditionally, implemented by strictly trained experts more labor-intensive large projects, which relatively expensive inefficient. Function Point Analysis widely used method supported several international standards. We propose structured a...

2002
Darren Pearce

Abstract This paper describes an experiment that attempts to compare a range of existing collocation extraction techniques as well as the implementation of a new technique based on tests for lexical substitutability. After a description of the experiment details, the techniques are discussed with particular emphasis on any adaptations that are required in order to evaluate it in the way propose...

Maryam Akhgari Mohammad javad Khodayar Seyed Majid Salimiasl, Zahra Mousavi,

Background:Extraction of drugs is one of the biggest concerns and the most important part of preparation and determination in forensic medicine. The lack of an easy, efficient and fast extraction method is the most important and most difficult problem despite the development of forensic centers and their being equipped with new diagnostic devices. In the present study, a comparison was conducte...

Journal: :iranian journal of chemistry and chemical engineering 0

modified bubble column extraction with ultrasonic bath (bce-ub) method was used to extract atropine from the stem and leaves of atropa belladonna. optimum condition were obtained with kamada solvent which was chloroform-methanol-ammonia 15:15:1(v/v/v) as extraction solvent, the particle size of  less than  350 µm, an extraction time of 23.95 min, a liquor to material ratio of 15.08 ml/g and  an...

The extraction of intact RNA from oocyte is quite challenging and time-consuming. A standard protocol using commercial RNA extraction kit, yields a low quantity of RNA in oocytes. In the past, several attempts in getting RNA for gene expression study ended up with a few different modified methods. Extraction of high-quality RNA from oocyte is important before further downstream analyses such as...

Journal: :analytical and bioanalytical chemistry research 2014
mohammad bagher gholivand yadollah yamini manijeh dayeni

a comparative study of ultrasound-assisted extraction (uae) and hydro-distillation was performed for fast extraction of estragole from tarragon (artemisia dracunculus l.) dried leaves. several influential parameters of the uae procedure in the extraction of estragole (type of solvent, extraction cycles, solvent to material ratio, irradiation time and particle size) were investigated and optimiz...

Journal: :مجله دانشگاه علوم پزشکی شهید صدوقی یزد 0
افروز اویسی a oveisi سید محمدرضا مرتضوی زاده m mortazavizadeh مهدی ارجمند m arjmand حسین فضلی h fazli محمدحسن شیخها mh sheikhha . non

introduction: dna extraction methods are very important for genetics research and diagnostic tests. in these methods are also important for detecting genetic diseases or in cancers for investigating genetic changes during cancer progression or treatment. therefore, selection of the best method for dna extraction from different samples such as bone marrow (bm) or peripheral blood (pb) and their ...

Introduction: Marjoram (Origanom majorana L), a plant which belongs to lamiaceae family, is used in medicine and food industry for its high antioxidant compounds. Since antioxidant activity of plants is affected by extraction method, this study aimed to optimize the extraction method of these compounds from different tissues of majoram (leaf and flower) in vegetative and flowering stages. Metho...

Journal: :the modares journal of electrical engineering 2011
ali heydari chaleshtori ahmad reza sharafat

we compare performance of adaptive schemes which are based on radial-basis functions and kalman filters for fast extraction of auditory evoked potentials. moreover, we propose a new method based on evoked potential modeling in the kalman filter framework, which can improve the accuracy compared to the existing methods. simulation results show that adaptive schemes and the kalman method are not ...

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