Results 81 to 90 of about 670,141 (365)

Viscosity Index Improvement of Lubricating Oil Fraction (SAE – 30)

open access: yesIraqi Journal of Chemical and Petroleum Engineering, 2008
An investigation was conducted for the improvement of viscosity index of a lubricating oil fraction (SAE – 30) obtained from vacuum distillation unit of lube oil plant of Daura Refinery, using solvent extraction process.
Abdul-Halim Abdul-Karim Mohammed   +1 more
doaj  

Ultrasonic-Assisted Deep Eutectic Solvent Extraction of Proanthocyanidins from Korean Pine Bark and Its Kinetics

open access: yesShipin gongye ke-ji, 2023
Objective: The technological conditions of ultrasonic-assisted deep eutectic solvent extraction of proanthocyanidins from Korean pine bark were optimized, and the extraction kinetics equation was fitted.
Jiayue ZHOU   +3 more
doaj   +1 more source

Measuring subdiffusion parameters [PDF]

open access: yes, 2003
We propose a method to extract from experimental data the subdiffusion parameter $\alpha$ and subdiffusion coefficient $D_\alpha$ which are defined by means of the relation $ =2D_\alpha/\Gamma(1+\alpha) t^\alpha$ where $$ denotes a mean square displacement of a random walker starting from $x=0$ at the initial time $t=0$. The method exploits a
arxiv   +1 more source

The power of microRNA regulation—insights into immunity and metabolism

open access: yesFEBS Letters, EarlyView.
MicroRNAs are emerging as crucial regulators at the intersection of metabolism and immunity. This review examines how miRNAs coordinate glucose and lipid metabolism while simultaneously modulating T‐cell development and immune responses. Moreover, it highlights how cutting‐edge artificial intelligence applications can identify miRNA biomarkers ...
Stefania Oliveto   +2 more
wiley   +1 more source

Determining an Efficient Solvent Extraction Parameters for Re-Refining of Waste Lubricating Oils [PDF]

open access: yesMehran University Research Journal of Engineering and Technology, 2012
Re-refining of vehicle waste lubricating oil by solvent extraction is one of the efficient and cheapest methods. Three extracting solvents MEK (Methyl-Ethyl-Ketone), 1-butanol, 2-propanol were determined experimentally for their performance based on ...
Hassan Ali Durrani   +2 more
doaj  

Comparison of Single-Ion Molecular Dynamics in Common Solvents [PDF]

open access: yes, 2018
Laying a basis for molecularly specific theory for the mobilities of ions in solutions of practical interest, we report a broad survey of velocity autocorrelation functions (VACFs) of Li$^+$ and PF$_6{}^-$ ions in water, ethylene carbonate, propylene carbonate, and acetonitrile solutions. We extract the memory function, $\gamma(t)$, which characterizes
arxiv   +1 more source

Optimization of Anthocyanin Extraction from Saffron Petals with Response Surface Methodology [PDF]

open access: yes, 2016
Optimum extraction conditions of anthocyanins from petals of saffron (Crocus sativus) using acidified ethanol as the solvent were revealed. The investigated factors were solvent to sample ratio (20:1–80:1), ethanol concentration (%), extraction ...
Ghorbani, M.   +4 more
core  

The cytoskeletal control of B cell receptor and integrin signaling in normal B cells and chronic lymphocytic leukemia

open access: yesFEBS Letters, EarlyView.
In lymphoid organs, antigen recognition and B cell receptor signaling rely on integrins and the cytoskeleton. Integrins act as mechanoreceptors, couple B cell receptor activation to cytoskeletal remodeling, and support immune synapse formation as well as antigen extraction.
Abhishek Pethe, Tanja Nicole Hartmann
wiley   +1 more source

A Study of Solid-Liquid Extraction with HF And HNO3 as Solvent for Determination of Cr and Cu in the River Sediment near the Muria Nuclear Power Plant

open access: yesJurnal Ilmu Dasar, 2012
A Study of solid-liquid extraction for determination of Cr and Cu in the river sediment near the Muria Nuclear Power Plant has been studied. The river sediment assayed is in Kancilan, Balong, Suru, Dombang, and Wareng rivers.
Imelda Fajriati   +2 more
doaj  

Design and adjustment of coupled microalgae oil extraction methods for the development of a topology of biorefinery

open access: yesProspectiva, 2015
Microalgae have the potential to produce a big amount of biodiesel per area unit owing to its high lipid content. However, for a sustainable biodiesel production from microalgae, the concept of biorefinery must be taken into account; this concept can be ...
Ángel Darío González-Delgado   +1 more
doaj   +1 more source

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