Results 11 to 20 of about 6,488 (192)

Functional fluorocarbons via free radical additions to hexafluoropropene [PDF]

open access: yes, 1987
The effect of substituents on the carbon-hydrogen bond reactivity in free radical additions to hexaf1uoropropene has been investegated. Ethers, amines, amides, isocyanates and silanes all give Free radical adducts.
Jones, S. L.
core   +4 more sources

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

Hydrophilic Polymers Enable Gastrointestinal Transit Monitoring by Fluorine-19 Magnetic Resonance Imaging. [PDF]

open access: yesAdv Healthc Mater
Hydrophilic fluorinated copolymers dissolve in chyme and give a strong, single 19F signal, unlike phase‐separating perfluorocarbons. Combined 1H‐19F MRI tracks their whole‐gut transit non‐invasively and without ionizing radiation. In rats, the tracers move through the gastrointestinal tract, resist resorption, and are well tolerated, a proof‐of‐concept
Groborz O   +13 more
europepmc   +2 more sources

Unprecedented Reactivity of Fluorocarbons and the Synthesis of New Inclusion Compounds [PDF]

open access: yes, 1990
A new and unprecedented reactivity of saturated fluorocarbons has been discovered. Application of this reaction to perfluorodecalin at ambient temperature and above is used to synthesis members of the 'octa-host' series. The mechanism of the reaction and
Robertson, Colin Dick
core   +3 more sources

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

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

Ubiquitously occurring perfluoroalkyl and polyfluoroalkyl substances: An overview of food and environmental contamination and implications for human health [PDF]

open access: yesScripta Medica
Perfluoroalkyl and polyfluoroalkyl substances (PFAS), commonly known as 'forever chemicals' are synthetic, anthropogenic compounds widely used in food packaging, processing equipment and nonstick surfaces.
Jaglan Poonam   +3 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

Fluorocarbons in satellite plumes: The photosynthesis and fluorescence from trifluoromethyl radical [PDF]

open access: yes, 2018
Made available in DSpace on 2018-08-17T16:09:34Z (GMT). No. of bitstreams: 2 3325.pdf: 17019 bytes, checksum: ef70f005019e7446740307b5964af8ea (MD5) license.txt: 4802 bytes, checksum: 58353f9dd6876860dd5221f3d7872a95 (MD5) Previous issue date: 6Made
Young, Justin W.   +2 more
core   +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

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