Results 21 to 30 of about 75,748 (259)

Metal(loid)s in herbal medicines and their infusions: Levels, transfer rate, and potential risks to human health

open access: yesHygiene and Environmental Health Advances, 2023
Since ancient times, communities have widely used herbal medicines and their teas for therapeutic properties. In the present study, the concentration, transfer rate, and potential health risks of metal(loid)s (As, Ba, Cd, Co, Cr, Cu, Mn, Mo, Pb, Sr, and ...
Razegheh Akhbarizadeh   +6 more
doaj   +1 more source

Solvent extraction of scandium from lateritic nickel- cobalt ores using different organic reagents

open access: yesE3S Web of Conferences, 2016
Scandium is the most important and strategic metal that can be recovered as a by-product from lateritic nickel-cobalt ores. In this research, different extractants were investigated in order to extract scandium from a sulfate medium by a using a solvent ...
Ferizoğlu Ece   +2 more
doaj   +1 more source

Evaluation of a Two-Phase Extraction System of Carbohydrates and Proteins from Chlorella vulgaris Utex 1803

open access: yesChemical Engineering Transactions, 2016
Microalgae are a valuable source of high-value products and biofuels, however the high-energy cost required for the extraction of their metabolites has kept questioning on possible industrial upgrading. The aim of this study was to evaluate the effect of
B. Garcia-Martinez   +5 more
doaj   +1 more source

EXMOTIF: efficient structured motif extraction [PDF]

open access: yesAlgorithms for Molecular Biology, 2006
Extracting motifs from sequences is a mainstay of bioinformatics. We look at the problem of mining structured motifs, which allow variable length gaps between simple motif components. We propose an efficient algorithm, called EXMOTIF, that given some sequence(s), and a structured motif template, extracts all frequent structured motifs that have quorum ...
Yongqiang Zhang, Mohammed J. Zaki
openaire   +3 more sources

Kinetic Study of Copper(II) Simultaneous Extraction/Stripping from Aqueous Solutions by Bulk Liquid Membranes Using Coupled Transport Mechanisms

open access: yesMetals, 2016
Heavy metals removal/recovery from industrial wastewater has become a prime concern for both economic and environmental reasons. This paper describes a comparative kinetic study of the removal/recovery of copper(II) from aqueous solutions by bulk liquid ...
Loreto León   +3 more
doaj   +1 more source

An efficient algorithm for information decomposition and extraction [PDF]

open access: yes2015 53rd Annual Allerton Conference on Communication, Control, and Computing (Allerton), 2015
The Hirschfeld-Gebelein-Renyi maximal correlation is a well-known measure of statistical dependence between two (possibly categorical) random variables. In inference problems, the maximal correlation functions can be viewed as so called features of observed data that carry the largest amount of information about some latent variables.
Makur, Anuran   +3 more
openaire   +3 more sources

Strong Acid Extraction Methods for “Total Phosphorus” in Soils: EPA Method 3050B and EPA Method 3051

open access: yesAgricultural & Environmental Letters, 2017
The emphasis on controlling environmental phosphorus (P) losses from agriculture has expanded the role of agricultural laboratories in testing a variety of media for P, including soils, waste residuals, manures, and runoff waters.
Clinton Church   +2 more
doaj   +1 more source

Deep Eutectic Solvent-Based Ultrasound-Assisted Strategy for Simultaneous Extraction of Five Macamides from Lepidium meyenii Walp and In Vitro Bioactivities

open access: yesFoods, 2023
This study aimed to develop an integrated approach of deep eutectic solvent-based ultrasound-assisted extraction (DES–UAE) to simultaneously extract five major bioactive macamides from the roots of Lepidium meyenii Walp.
Keke Li   +4 more
doaj   +1 more source

Thermodynamic Analysis of a Steam Power Plant with Double Reheat and Feed Water Heaters

open access: yesAdvances in Mechanical Engineering, 2014
A steam cycle with double reheat and turbine extraction is presented. Six heaters are used, three of them at high pressure and the other three at low pressure with deaerator. The first and second law analysis for the cycle and optimization of the thermal
M. M. Rashidi, A. Aghagoli, M. Ali
doaj   +1 more source

Dependency Parsing with Efficient Feature Extraction [PDF]

open access: yes, 2012
The fastest parsers currently can parse an average sentence in up to 2.5ms, a considerable improvement, since most of the older accuracy-oriented parsers parse only few sentences per second. It is generally accepted that the complexity of a parsing algorithm is decisive for the performance of a parser. However, we show that the most time consuming part
Alexander Volokh, Günter Neumann
openaire   +1 more source

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