Results 121 to 130 of about 375,247 (278)

Biosurfactant Production From Waste Frying Oil: Process Optimization and Physicochemical Characterization of Surface Properties

open access: yesJournal of Surfactants and Detergents, EarlyView.
ABSTRACT This study focuses on the development of a cost‐effective bioprocess for biosurfactant production, encompassing process optimization and physicochemical characterization. Surface tension reduction and oil dispersion activity were evaluated, highlighting its strong potential for applications in food, pharmaceuticals, and bioremediation. In this
Nihed Tellili   +3 more
wiley   +1 more source

Problematic Issues of Creation of High-Powered Gas and Gas-Diesel Engines

open access: yesМеханика машин, механизмов и материалов, 2018
The creation of modern high-powered gas and gas-diesel engines is associated with the solution of two main tasks – the elimination of abnormal combustion and reduction of engine thermal factor. The paper discusses ways to reduce exhaust gas temperatures,
Sergey V. Bakhmutov   +3 more
doaj  

Advanced Biofuels Based on Fischer-Tropsch Synthesis for Applications in Diesel Engines. [PDF]

open access: yesMaterials (Basel), 2021
Jenčík J   +7 more
europepmc   +1 more source

Dynamic Analysis of Electrically Assisted Turbocharger Rotor Considering Contact Effects in Nut Structures

open access: yesInternational Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT The rotor system of an electrically assisted turbocharger (EAT) is composed of multiple shaft components; The nonlinear connection and contact effects make it difficult to determine the system dynamic characteristics. To improve the modeling accuracy of EAT rotor system and evaluate the influence of contact between multi‐axis components and ...
Wenchao Liang   +5 more
wiley   +1 more source

An Integrated Statistical and Machine Learning Framework for Predicting the Dry Sliding Tribological Behavior of CFRP and GFRP Composites Under Environmental Aging and Loading Conditions

open access: yesPolymer Composites, EarlyView.
The graphical abstract presents the experimental and data‐driven framework used to investigate the dry sliding tribological behavior of CFRP and GFRP composites. The effects of seawater, engine oil, diesel fuel, aging time, and normal load on the specific wear rate (SWR) and coefficient of friction (COF) were evaluated using pin‐on‐disc tests, ANOVA ...
Ahmet Saylık   +2 more
wiley   +1 more source

Characteristics, properties and limitations of per‐ or polyfluoroalkyl substances (PFASs) and fluoropolymers

open access: yesPolymer International, EarlyView.
An overview and categorization of man‐made per‐ or polyfluoroalkyl substances (PFASs) including low‐molar‐mass and high‐molar‐mass fluorochemicals, and their international regulations is presented. Though certain PFASs are toxic, bioaccumulative and cross the human cellular membranes, others, such as fluoropolymers, are safe, reliable and involved in ...
Bruno Améduri
wiley   +1 more source

Aboveground herbivory elevates belowground rhizosphere volatile organic compound concentrations in ambient and polluted air, independent of volatile sampling methodology

open access: yesPLANTS, PEOPLE, PLANET, EarlyView.
The effect of air pollution on plants is still underexplored, especially belowground. We used a field facility that released diesel exhaust and ozone at concentrations equivalent to those near a busy road in Reading, UK, to measure belowground gas exchange of Scots pine together with feeding by large pine weevils, a major pest of conifers.
Tihomir Simin   +7 more
wiley   +1 more source

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