Results 11 to 20 of about 17,970 (262)

Cardiotoxicity of Freon among refrigeration services workers: comparative cross-sectional study [PDF]

Environmental Health, 2009
Background Freon includes a number of gaseous, colorless chlorofluorocarbons. Although freon is generally considered to be a fluorocarbon of relatively low toxicity; significantly detrimental effects may occur upon over exposure.
Ismail Mahmoud M, Abbas Reem A, Sabik Laila ME, El-Refaei Safwat   +3 more
doaj   +3 more sources

Propane (HC – 290) as an Alternative Refrigerant in the Food Transport Refrigeration Sector in Southern Africa – a Review

Automotive Experiences, 2022
Most of the food transport trucks in Sothern Africa are equipped with refrigeration and air conditioning systems filled with fluorocarbon refrigerants such as R404A to facilitate the heat transfer process.
Thomas Kivevele
doaj   +1 more source

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

International 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, Muhammad Umair, Khubab Shaker, Yasir Nawab, Tehseen Ullah, Sheraz Ahmad   +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

Environment 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, Scott A. Halperin, Michael W. Dzierlenga, Becky Skidmore, Matthew W. Linakis, Shinichi Nakagawa, Matthew P. Longnecker   +6 more
doaj   +1 more source

Cardiac tissue engineering [PDF]

Journal 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, Vunjak-Novaković Gordana   +1 more
doaj   +1 more source

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

Вестник 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

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

ChemEngineering, 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, Nuzhet Nihaar Nasir Ahamed   +1 more
doaj   +1 more source

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

Energies, 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, Rocco Di Filippo, Rossano Albatici, Oreste S. Bursi, Rosa Di Maggio   +4 more
doaj   +1 more source

Modelling of Lubricated Electrical Contacts

Lubricants, 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

The structure of fluid trifluoromethane and methylfluoride [PDF]

, 2000
We present hard X-ray and neutron diffraction measurements on the polar fluorocarbons HCF3 and H3CF under supercritical conditions and for a range of molecular densities spanning about a factor of ten.
Allen M P, Buckingham A D, Böhm H J, Enciso E, Enderby J E, Gavezotti A, Greenwood N N, H E Fischer, Hall C D, Hubell J H, Ibel K, J Neuefeind, Kahl G, Kawashina Y, Köster L, Lide D R, McGreevy R L, Schröer W, Schröer W, Soper A K, Suck J B, Torrie B H, W Schröer, Zeidler M D   +23 more
core   +1 more source