Results 71 to 80 of about 2,653,426 (391)

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

Mehran 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, Muhammed Ibrahim Panhwar, Rafique Akthar Kazi   +2 more
doaj  

SEPARATION OF p-AMINOBENZOIC ACID BY REACTIVE EXTRACTION. 1. MECHANISM AND INFLUENCING FACTORS [PDF]

, 2008
The comparative study on the reactive extraction of p-aminobenzoic acid with Amberlite LA-2 and D2EHPA in two solvents with different polarity (n-heptane and dichloromethane) indicated that the extractant type and solvent polarity control the extraction ...
ANCA-IRINA GALACTION, DAN CASCAVAL, MARIA CAMARUT   +2 more
core   +1 more source

Interaction vesicles as emerging mediators of host‐pathogen molecular crosstalk and their implications for infection dynamics

FEBS Letters, EarlyView.
Interaction extracellular vesicles (iEVs) are hybrid vesicles formed through host‐pathogen communication. They facilitate immune evasion, transfer pathogens' molecules, increase host cell uptake, and enhance virulence. This Perspective article illustrates the multifunctional roles of iEVs and highlights their emerging relevance in infection dynamics ...
Bruna Sabatke, Izadora Volpato Rossi, Marcel I. Ramirez   +2 more
wiley   +1 more source

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

Iraqi 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, Amal Khalid Shehab Al – Rubai   +1 more
doaj  

Effect of solvent type and ratio on betacyanins and antioxidant activity of extracts from Hylocereus polyrhizus flesh and peel by supercritical fluid extraction and solvent extraction [PDF]

, 2016
The main objective of the present study was to investigate the effect of solvent type and ratio as well as the extraction techniques (i.e. supercritical fluid extraction (SFE) and conventional solvent extraction) on betacyanins and antioxidant activity ...
Abd Manap, Mohd Yazid, Fathordoobady, Farahnaz, Mirhosseini, Hamed, Selamat, Jinap   +3 more
core   +1 more source

Comparative analysis of essential oil composition of Iranian and Indian Nigella sativa L. extracted using supercritical fluid extraction and solvent extraction

Drug Design, Development and Therapy, 2017
The objective of this study was to compare the oil extraction yield and essential oil composition of Indian and Iranian Nigella sativa L. extracted by using Supercritical Fluid Extraction (SFE) and solvent extraction methods.
Kourosh Hasanzadeh Ghahramanloo, Behnam Kamalidehghan, H. Akbari Javar, Riyanto Teguh Widodo, K. Majidzadeh, M. I. Noordin   +5 more
semanticscholar   +1 more source

A stepwise emergence of evolution in the RNA world

FEBS Letters, EarlyView.
How did biological evolution emerge from chemical reactions? This perspective proposes a gradual scenario of self‐organization among RNA molecules, where catalytic feedback on random mixtures plays the central role. Short oligomers cross‐ligate, and self‐assembly enables heritable variations. An event of template‐externalization marks the transition to
Philippe Nghe
wiley   +1 more source

The twin-screw extrusion technology, an original and powerful solution for the biorefinery of sunflower whole plant [PDF]

, 2010
The objective of this study was to evaluate the feasibility of an aqueous process for the biorefinery of sunflower whole plant using a twin-screw extruder.
Evon, Philippe, Pontalier, Pierre-Yves, Rigal, Luc, Vandenbossche, Virginie   +3 more
core   +1 more source

B cell mechanobiology in health and disease: emerging techniques and insights into therapeutic responses

FEBS Letters, EarlyView.
B cells sense external mechanical forces and convert them into biochemical signals through mechanotransduction. Understanding how malignant B cells respond to physical stimuli represents a groundbreaking area of research. This review examines the key mechano‐related molecules and pathways in B lymphocytes, highlights the most relevant techniques to ...
Marta Sampietro, Marco Cellani, Cristina Scielzo   +2 more
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

Jurnal 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, Malawati Rizkiyah, Muzakky Muzakky   +2 more
doaj