نتایج جستجو برای: extraction efficiency

تعداد نتایج: 544647  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شهید بهشتی - دانشکده علوم 1372

a simple, sensitive and selective method for solvent extraction and spectrophotemetric determination of lanthanum (ii) europium (iii), and cerium (iii) is described , the rare earth metals are extracted into chloroform solution of n-phenylbenzohydroxamic acid (pbha) at ph 9-10 various parameters are studied to optimize the extraction conditions. the molar absorptivity is found to increase from ...

A. Fazlara, F. Zolfaghar Karahroodi, H. Najafzadeh, M. Zarei,

Background: Histamine is a food-borne chemical hazard which causes scombroid poisoning. The efficiency of histamine recovery from fish is greatly influenced by selection of an appropriate extraction solvent. Hence, in this study the efficiency of different extraction solvents on recovery of histamine from fresh, frozen and canned fish was evaluated. Methods: Fresh, frozen and canned rainbow tr...

Journal: :Lecture Notes in Computer Science 2022

Efficiently identifying keyphrases that represent a given document is challenging task. In the last years, plethora of keyword detection approaches were proposed. These can be based on statistical (frequency-based) properties e.g., tokens, specialized neural language models, or graph-based structure derived from document. The methods computationally amongst most efficient ones, while maintainin...

Journal: :Forensic Science International: Genetics Supplement Series 2015

Journal: :Forensic Science International: Genetics Supplement Series 2019

Journal: :The Philippine statistician (Quezon City) 2021

Text mining used on texts and publications in the biomedical molecular biology fields is referred to as "biomedical text mining." It a relatively new area of study at intersection computational linguistics, bioinformatics, natural language processing. Superior usefulness goal sequential pattern identify statistically significant patterns among data instances when values are presented sequential...

Journal: :Helgoländer Wissenschaftliche Meeresuntersuchungen 1979

In this work, extraction of propionic acid from the aqueous phase to the organic phase (1-octanol) was performed in T-junction microchannels and effects of channel diameter and fluid flow rate on the mass transfer characteristics were investigated. The two-phase flow patterns in studied microchannels with 0.4 and 0.8 mm diameters were observed. Weber ‎ number and surface-to-volume ratio were ca...

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