Results 1 to 10 of about 23,225 (270)

Nucleophilic Isocyanation [PDF]

open access: yesACS Omega, 2020
Isonitriles are frequently employed as both substrates for organic transformations and ligands for organometallic chemistry. However, despite the wide application of the isonitriles, their synthesis generally depends on the traditional dehydration of N-formamide.
Taiga Yurino, Takeshi Ohkuma
openaire   +3 more sources

Synthesis, Molecular Docking, and Bioactivity Study of Novel Hybrid Benzimidazole Urea Derivatives: A Promising α-Amylase and α-Glucosidase Inhibitor Candidate with Antioxidant Activity

open access: yesPharmaceutics, 2023
A novel series of benzimidazole ureas 3a–h were elaborated using 2-(1H-benzoimidazol-2-yl) aniline 1 and the appropriate isocyanates 2a–h. The antioxidant and possible antidiabetic activities of the target benzimidazole-ureas 3a–h were evaluated.
Lotfi M. Aroua   +8 more
doaj   +1 more source

Epigenetic Markers Are Associated With Differences in Isocyanate Biomarker Levels in Exposed Spray-Painters

open access: yesFrontiers in Genetics, 2021
Isocyanates are respiratory and skin sensitizers that are one of the main causes of occupational asthma globally. Genetic and epigenetic markers are associated with isocyanate-induced asthma and, before asthma develops, we have shown that genetic ...
Laura W. Taylor   +3 more
doaj   +1 more source

Antitrust Aspects of Transatlantic Investment [PDF]

open access: yes, 1969
In this diploma work a discrete cubic nonlinear Schrödinger equation (DNLS) is used as a model for the evolution of the electric field in a system of coupled waveguides with nonlinear index of refraction.The DNLS is inferred from Maxwell’s equations by ...
Fugate, Wilbur L.
core   +4 more sources

Isocyanates as Precursors to Biomedical Polyurethanes

open access: yesChemical Engineering Transactions, 2014
This work is a review of the main chemical properties of aliphatic and aromatic isocyanates and their advantages and disadvantages when used as precursors for polyurethane (PU) synthesis, to be applied as biomedical polyurethanes.
L. Gabriel   +4 more
doaj   +1 more source

Thermal curing of an epoxy-anhydride system modified with hyperbranched poly(ethylene imine)s with different terminal groups [PDF]

open access: yes, 2017
New hyperbranched polymers (HBP) have been synthesized by reaction of a poly(ethylene imine) with phenyl and t-butyl isocyanates. These HBPs have been characterized by 1H-NMR (nuclear magnetic resonance of hydrogen) and Fourier transform infrared ...
Acebo Gorostiza, Cristina   +5 more
core   +2 more sources

Increase of Exhaled Nitric Oxide (eNO) after Methylene Diphenyl Diisocyanate (MDI) Exposure in Isocyanate Workers with Bronchial Hyperresponsiveness

open access: yesAllergology International, 2005
Background: : Isocyanates have become one of the most important causes of occupational asthma in industrialized countries. Increased exhaled nitric oxide (eNO) levels have been shown to be associated with allergic airway inflammation.
Xaver Baur, Luba Barbinova
doaj   +1 more source

Influence of Genetic Variance on Biomarker Levels After Occupational Exposure to 1,6-Hexamethylene Diisocyanate Monomer and 1,6-Hexamethylene Diisocyanate Isocyanurate

open access: yesFrontiers in Genetics, 2020
We evaluated the impact of genetic variance on biomarker levels in a population of workers in the automotive repair and refinishing industry who were exposed to respiratory sensitizers 1,6-hexamethylene diisocyanate (HDI) monomer and one of its trimers ...
Laura W. Taylor   +4 more
doaj   +1 more source

Residual Isocyanates in Medical Devices and Products: A Qualitative and Quantitative Assessment

open access: yesEnvironmental Health Insights, 2016
We conducted a pilot qualitative and quantitative assessment of residual isocyanates and their potential initial exposures in neonates, as little is known about their contact effect.
Gillian Franklin   +8 more
doaj   +1 more source

Novel bio-based epoxy-polyurethane materials from modified vegetable oils – synthesis and characterization

open access: yeseXPRESS Polymer Letters, 2017
Presented research shows the results of a study on mechanical properties of materials obtained in the course of innovatory application of epoxidized vegetable oil in the synthesis of new bio-based epoxy resins, crosslinked with curing agents which are ...
A. Sienkiewicz, P. Czub
doaj   +1 more source

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