Results 141 to 150 of about 249,617 (336)

Pichia kudriavzevii (JD2) Immobilized on Acid Activated Perlite as a Biosorbent for Solid Phase Extraction of Cr(III) Determination by AAS (Atomic Adsorption Spectroscopy)

Microscopy Research and Technique, EarlyView.
ABSTRACT In this study, the preconcentration of Cr(III) ion in Pichia kudriavzevii JD2 immobilized perlite adsorbent by solid phase extraction was investigated. The determination of Cr(III) was performed using flame atomic absorption spectrometry (AAS).
Aliya Amanzhol, Özcan Yalçınkaya, Berat Çinar Acar, Zehranur Yuksekdag   +3 more
wiley   +1 more source

Beneficiation of concentrated ultrafine suspensions with a Falcon UF concentrator [PDF]

, 2011
Falcon concentrators are enhanced gravity separators designed for concentrating fine particles. The Falcon UF model is unique in that it is dedicated to beneficiation of ultrafines, one key feature being that it does not make use of any fluidization ...
Bourgeois, Florent, Climent, Éric, Kroll-Rabotin, Jean-Sébastien   +2 more
core  

Heavy Metal Contamination in Arenillas Ecological Reserve Soils: Correlation and Conservation Impact

Land Degradation &Development, EarlyView.
ABSTRACT This study addresses the critical knowledge gap regarding heavy metal contamination in the soils of the Arenillas Ecological Reserve (AERv), located on the southwest coast of Ecuador. Despite being a fragile and highly biodiverse ecosystem, little is known about the magnitude, spatial distribution, and drivers of heavy metal contamination in ...
Vinicio Carrión‐Paladines, James Calva, Teddy Ochoa‐Pérez, Leslye Ruiz, Fausto López‐Rodríguez   +4 more
wiley   +1 more source

Evaluation of microstructural and nanomechanical performance of spark plasma sintered TiFe-SiC reinforced aluminium matrix composites

Journal of Materials Research and Technology, 2020
Due to the increasing demand for lighter materials with enhanced properties, the upgrade of techniques to improve the production of high-performance composite materials is of great interest in modern technology.
Samuel Olukayode Akinwamide, Miltia Lesufi, Ojo Jeremiah Akinribide, Peggy Mpolo, Peter Apata Olubambi   +4 more
doaj  

Symbolic Methodology in Numeric Data Mining: Relational Techniques for Financial Applications [PDF]

arXiv, 2002
Currently statistical and artificial neural network methods dominate in financial data mining. Alternative relational (symbolic) data mining methods have shown their effectiveness in robotics, drug design and other applications. Traditionally symbolic methods prevail in the areas with significant non-numeric (symbolic) knowledge, such as relative ...
arxiv  

A knowledge graph attention network for the cold‐start problem in intelligent manufacturing: Interpretability and accuracy improvement

Materials Genome Engineering Advances, EarlyView.
SteelKGAT enhances prediction accuracy and interpretability. Notably, this work represents the first application of knowledge graph attention neural networks to address the cold‐start problem in steel rolling production. Abstract In the rolling production of steel, predicting the performance of new products is challenging due to the low variety of data
Ziye Zhou, Yuqi Zhang, Shuize Wang, David San Martin, Yongqian Liu, Yang Liu, Chenchong Wang, Wei Xu   +7 more
wiley   +1 more source

Flexural fluctuations of the rotors of knife refiners [PDF]

, 2020
The subject of the study is the flexural fluctuations of the rotors of knife refiners. The dynamic and mathematical models of rotors of disk mills are developed. As a result of research, a method for vibration calculation of rotors is proposed and tested.
Sannikov, A. A., Vikharev, S. N., Zinatov, M. G.   +2 more
core  

Utilization of Catla catla Fish Scale for Eliminating Cr (III) and Co (II) Heavy Metals From Wastewater

Nano Select, EarlyView.
The graphical abstract represents fish scales, a waste by product, were repurposed as a bio‐adsorbent for Cr(III) and Co(II) removal. The scales were washed, dried, and ground before being tested under varying concentrations. FTIR analysis showed changes in functional groups after adsorption, while SEM revealed metal ion attachment.
Samiha Sultana, Nafisa Maliat, Fahim Khan, Ankur Paul, Rukaiya Tasnim, Nusrat Jahan   +5 more
wiley   +1 more source

Effect of TiN Nanoparticles on the Friction and Wear Properties of Spark Plasma Sintered Fe-Cr-Ni

Tribology in Industry, 2019
This study evaluated the dry sliding wear and friction behaviour of spark plasma sintered Fe-Cr-Ni (a duplex stainless steel known as SAF 2205) matrix with titanium nitride (TiN) nanoparticles as reinforcement. Tests were performed with a tribometer at a
M.R. Mphahlele, S.R. Oke, O.O. Ige, O.E. Falodun, P.A. Olubambi   +4 more
doaj   +1 more source

A Comparison of the Electrochemical Oxidative Dissolution of Pyrite and Chalcopyrite in Dilute Nitric Acid Solution

ChemistryOpen, EarlyView.
This research was primarily driven by the aim to extract residual encapsulated gold in sulfidic minerals, which would require the dissolution of the mineral. The electrochemical oxidation of pyrite and chalcopyrite in 0.5 M nitric acid was investigated here, using cyclic voltammetry and electrochemical impedance spectroscopy, to see if there are any ...
Samaneh Teimouri, Johannes Herman Potgieter, Caren Billing   +2 more
wiley   +1 more source