Results 11 to 20 of about 10,058 (226)

Investigation of Chemical Treatments to Enhance the Mechanical Properties of Natural Fiber Composites

open access: yesInternational Journal of Polymer Science, 2023
A sustainable approach to composites is leading to the use of natural fibers rather than synthetic materials, like carbon or glass, for reinforcement. However, the higher moisture absorption of natural fibers impairs the composite’s mechanical properties.
Farooq Rauf   +5 more
doaj   +1 more source

Systematic review and meta-analysis of epidemiologic data on vaccine response in relation to exposure to five principal perfluoroalkyl substances

open access: yesEnvironment International, 2023
Background: Epidemiologic studies of serum per- and polyfluoroalkyl substances (PFAS) and antibody response to vaccines have suggested an adverse association, but the consistency and magnitude of this association remain unclear.
Lori Crawford   +6 more
doaj   +1 more source

Cardiac tissue engineering [PDF]

open access: yesJournal of the Serbian Chemical Society, 2005
We hypothesized that clinically sized (1-5 mm thick),compact cardiac constructs containing physiologically high density of viable cells (≈108 cells/cm3) can be engineered in vitro by using biomimetic culture systems capable of providing oxygen transport ...
Radišić Milica   +1 more
doaj   +1 more source

Greenhouse Gas Sensors Fabricated with New Materials for Climatic Usage: A Review

open access: yesChemEngineering, 2018
With the increasing utilization of fossil fuels in today’s technological world, the atmosphere’s concentration of greenhouse gases is increasing and needs to be controlled.
Kalathur S. V. Santhanam   +1 more
doaj   +1 more source

European experience application in replacing hydrofluorocarbons in air conditioning units in domestic railway transport

open access: yesВестник Научно-исследовательского института железнодорожного транспорта, 2021
Adoption by Russia of the Kigali Amendment to the Montreal Protocol on substances that deplete the ozone layer posed a very difficult task for consumers of artificial cold, including rail transport, to find an acceptable alternative to the R134a freon ...
I. M. Mazurin, S. N. Naumenko
doaj   +1 more source

Sustainable Retrofit of Existing Buildings: Impact Assessment of Residual Fluorocarbons through Uncertainty and Sensitivity Analyses

open access: yesEnergies, 2023
Fluorocarbons are an important category of greenhouse gas emissions, and currently, their use is prohibited due to their significant contribution to the global ozone depletion potential (ODP).
Gianluca Maracchini   +4 more
doaj   +1 more source

Modelling of Lubricated Electrical Contacts

open access: yesLubricants, 2022
Electrical contacts, although critically important for a wide range of applications, are susceptible to degradation due to fretting corrosion, especially when sliding and vibrations occur.
Robert L. Jackson, Santosh Angadi
doaj   +1 more source

Synthesis of Nontoxic and Bio Based Oil and Water Repellent Polymers for Cotton Fabrics Using Stearic Acid, Succinic Acid, and Itaconic Acid

open access: yesJournal of Natural Fibers, 2022
Fluorocarbon-based oil and water repellents are considered best in textile finishing due to their excellent performance. Although, long chain fluorocarbons are effective oil and water repellents but they are toxic and being banned. Therefore, the present
Rabia Sharif   +4 more
doaj   +1 more source

The concentration of several perfluoroalkyl acids in serum appears to be reduced by dietary fiber

open access: yesEnvironment International, 2021
Fiber-rich food intake has been associated with lower serum concentrations of perfluoroalkyl substances (PFAS) in some studies and dietary fiber was related to lower serum PFAS in a recent study.
Michael W. Dzierlenga   +2 more
doaj   +1 more source

How to Achieve High Encapsulation Efficiencies for Macromolecular and Sensitive APIs in Liposomes

open access: yesPharmaceutics, 2021
This research highlights the capacity of a newly introduced centrifugation process to form liposomes from water-in-fluorocarbon nano-emulsions stabilized with phospholipids to incorporate macromolecular and sensitive active pharmaceutical ingredients ...
Kirsten Ullmann   +2 more
doaj   +1 more source

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