Results 91 to 100 of about 302,026 (291)

Compressible streaming instabilities in rotating thermal viscous objects

open access: yes, 2009
We study electromagnetic streaming instabilities in thermal viscous regions of rotating astrophysical objects, such as, protostellar and protoplanetary magnetized accretion disks, molecular clouds, their cores, and elephant trunks.
A. K. Nekrasov   +11 more
core   +1 more source

Cool Kitchen: Processing Starch and Eggshell Powder into Sustainable Coatings for Passive Daytime Cooling

open access: yesAdvanced Functional Materials, EarlyView.
A food‐grade cooling composite made from starch and recycled eggshell powder offers a scalable, ultra‐low‐cost solution for passive daytime radiative cooling. Easily prepared using basic kitchen tools, this material empowers communities, even in areas with limited infrastructure, to stay cooler during worsening summer heat waves.
Qimeng Song   +3 more
wiley   +1 more source

The Hydrodynamic Radii of Viscosity Index Improvers for Lubricant Oils

open access: yesTribology Online, 2019
Viscosity index improvers are polymeric additives that are commonly used to control the viscometrics of lubricants. Nevertheless, there have been few studies on the molecular size of these additives, which is the origin of their viscosity-increasing ...
Kazushi Tamura, Taeko Nakano
doaj   +1 more source

ASTM Viscosity Tables for Kinematic Viscosity Conversions and Viscosity Index Calculations

open access: yes, 1972
Description This publication provides a convenient and compact reference and set of tables for the two most frequently used ASTM viscosity methods, D 2161-66 (1971)—ASTM Standard Method for Conversion of Kinematic Viscosity to Saybolt Universal Viscosity or to Saybolt Furol Viscosity D 2270-64 (1968)—ASTM Standard Methods for Calculating
openaire   +2 more sources

Unleashing the Power of Machine Learning in Nanomedicine Formulation Development

open access: yesAdvanced Functional Materials, EarlyView.
A random forest machine learning model is able to make predictions on nanoparticle attributes of different nanomedicines (i.e. lipid nanoparticles, liposomes, or PLGA nanoparticles) based on microfluidic formulation parameters. Machine learning models are based on a database of nanoparticle formulations, and models are able to generate unique solutions
Thomas L. Moore   +7 more
wiley   +1 more source

Radiatively and thermally driven self-consistent bipolar outflows from accretion discs around compact objects

open access: yes, 2013
We investigate the role of radiative driving of shock ejected bipolar outflows from advective accretion discs in a self consistent manner. Radiations from the inner disc affects the subsonic part of the jet while those from the pre-shock disc affects the
Chattopadhyay, Indranil   +2 more
core   +1 more source

Bio‐Friendly Artificial Muscles Based on Carbon Nanotube Yarns and Eutectogel Derivatives

open access: yesAdvanced Functional Materials, EarlyView.
Solid‐state artificial muscles based on coiled commercial carbon nanotube yarns coated with eutectogel derivatives exhibit unipolar actuation through selective ion intercalation. Combining polyanionic and polycationic gels enables enhanced contractile stroke and high energy density.
Gabriela Ananieva   +6 more
wiley   +1 more source

Dynamic viscosity and refractive index of aliphatic n-heptane with substituted aromatic hydrocarbons at T = (303.15 to 323.15) K and atmospheric pressure

open access: yesChemical Thermodynamics and Thermal Analysis
Dynamic viscosity and refractive index of aliphatic n-heptane with substituted aromatic hydrocarbons, such as toluene, o-xylene, and mesitylene were measured at T = (303.15 to 323.15) K and atmospheric pressure. The measurements were carried out over the
M. Abdur Rahaman   +3 more
doaj   +1 more source

Kapok Seed Oil As Viscosity Index Improved

open access: yesScientific Contributions Oil and Gas, 2022
Production, supply and development of hubricating oils for domestic use are carried out in Indonesia using domestie bate ofls and imported additives. Research on the use of kapok seed oill as a viscosity index improver for lubricating oll is as an effort for supply and development of lubricating oll additive which is produced in the country.
openaire   +1 more source

Shearing stability of lubricants [PDF]

open access: yes
Shearing stabilities of lubricating oils containing a high mol. wt. polymer as a viscosity index improver were studied by use of ultrasound. The oils were degraded by cavitation and the degradation generally followed first order kinetics with the rate of
Gijyutsu, G., Shiba, Y.
core   +1 more source

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