Results 11 to 20 of about 159,584 (286)

Comparative Study of Breakdown Voltage of Mineral, Synthetic and Natural Oils and Based Mineral Oil Mixtures under AC and DC Voltages

open access: yesEnergies, 2017
This paper deals with a comparative study of AC and DC breakdown voltages of based mineral oil mixtures with natural and synthetic esters mainly used in high voltage power transformers.
Abderrahmane Beroual   +3 more
doaj   +3 more sources

¿Raúl, te acuerdas…? Neruda y González Tuñón ante la Guerra Civil española [PDF]

open access: yes, 2004
 The mechanism mass change in system «gas–coalhydrargium  a liquid» is considered. The mathematical model mass change off water of mineral oils is developed.
А.Й. Пашинський   +2 more
core   +3 more sources

The Investigation of the Effect of Mineral Oils which Have Different Specifications on The Performance of Palm- and Tallow-Based Soap Recipes

open access: yesJournal of the Turkish Chemical Society, Section A: Chemistry, 2020
In this work, three different type of mineral oils, with same amount (%1 as ratio), have been added to two different soap recipes from animal origin oils and vegetable derived fatty acids that have the same rate of foaming agent and similar critical ...
Esra GÜL   +2 more
doaj   +1 more source

Wear resistance evaluation of palm fatty acid distillate using four-ball tribotester [PDF]

open access: yes, 2012
Petroleum reserves are declining nowadays while ironically petroleum is a major source of pollution despite many uses. Researchers are in effort to find an alternative to replace petroleum as a lubricant.
Ani, Farid Nasir   +2 more
core   +1 more source

A case of lipoid pneumonia associated with occupational exposure to solvents in a dry‐cleaning worker

open access: yesRespirology Case Reports, 2021
Lipoid pneumonia can develop from exposure to different types of oil, but occupational exposure is rare. A 58‐year‐old woman was referred to our hospital for patchy airspace opacities in the lungs with lower lobe predominance on chest computed tomography.
Sunji Park, Ji Eun Park, Jaehee Lee
doaj   +1 more source

A new approach to understanding the frequency response of mineral oil [PDF]

open access: yes, 2014
Dielectric spectroscopy is non-invasive diagnostic method and can give information about dipole relaxation, electrical conduction and structure of molecules.
Chen, George   +4 more
core   +1 more source

Impedance Spectroscopy as a Tool for the Diagnosis of the State of Vegetable Oils Used as Lubricants

open access: yesInternational Journal of Electrochemical Science, 2015
In this research the performance of sesame seeds and sweet almond oils was analyzed used as lubricants in preventive wear testing (AW) in a four-ball tribometer. The impedance spectroscopy technique was used in the frequency range of 0.2 to 2000 kHz as a
E. Delgado, W. Aperador, A. Hernández
doaj   +1 more source

CORROSIVE TRENDS OF MINERAL OILS AND EFFECTS OF SUCH DISTINCTIVE COMPOSITES ON THE METALS [PDF]

open access: yesEuropean Journal of Materials Science and Engineering, 2019
The investigations of the impact of corrosive properties in mineral oils on the corrosion rates of different types of metals and the nature of such corrosion with respect to the corrosive compounds of mineral oils and the metal types were the aims and ...
Jagath K. PREMACHANDRA
doaj   +1 more source

Reducing environmental pollution caused by construction plant [PDF]

open access: yes, 2001
Quantifiable data produced in a national report by the Environment Agency of England and Wales entitled ‘Water pollution incidents in England and Wales 1997’ and published by the Stationery Office in 1998, identifies that of over 3,723 substantiated ...
Jackson, F, Morledge, R
core   +1 more source

Assessing Friction Characteristics of Liquid Lubricants [PDF]

open access: yes, 2005
The decline of fossil fuel reserves and the increasing awareness of greenhouse gas emissions have been the primary driving forces behind the need to conserve energy.
Hargreaves, Douglas J., Tang, John C. H.
core   +3 more sources

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