Results 91 to 100 of about 26,556 (257)

SANS from Salt-Free Aqueous Solutions of Hydrophilic and Highly Charged Star-Branched Polyelectrolytes [PDF]

open access: yes, 2016
International audienceScattering functions of sodium sulfonated polystyrene (NaPSS) star-branched polyelectrolytes with high sulfonation degrees were measured from their salt-free aqueous solutions, using the Small Angle Neutron Scattering (SANS ...
Boué, François   +5 more
core   +4 more sources

Liver X Receptor α (LXRα) Regulates 5β‐Reductase (AKR1D1) Expression in Avian Embryos: Implications for Yolk Steroid Metabolism

open access: yesJournal of Experimental Zoology Part A: Ecological and Integrative Physiology, EarlyView.
ABSTRACT Steroid‐mediated maternal effects are well‐studied as a source of phenotypic variation. In bird eggs, the yolk contains various steroids that can influence embryonic development. However, one complicating factor in understanding how yolk steroids affect development is that the embryo metabolizes yolk steroids to regulate exposure.
Ryan T. Paitz   +4 more
wiley   +1 more source

Synthesis in pilot plant scale and physical properties of sulfonated polystyrene

open access: yesJournal of the Brazilian Chemical Society, 2003
The homogenous sulfonation of polystyrene was developed in a pilot plant scale producing polymers with different sulfonation degrees (18 to 22 mole % of sulfonated styrene units).
Martins Cristiane R.   +2 more
doaj  

Molecular cloning, expression, localisation and functional characterisation of a rabbit SULT1C2 sulfotransferase [PDF]

open access: yes, 1999
The importance of sulfotransferases in xenobiotic metabolism is gaining recognition. The gastrointestinal (CI) tract is a major portal of entry for many xenobiotics, yet little is known about the contribution of sulfotransferases to detoxication or ...
Aksoy   +30 more
core   +2 more sources

The barley–malt–beer chain: A process and food safety approach

open access: yesJSFA reports, EarlyView.
Abstract This review addresses the current state of knowledge on the barley–malt–beer chain and its main physical, chemical, and microbiological contaminants, with particular emphasis on spoilage microorganisms and their toxic metabolites. The barley–malt–beer production chain represents a mature and globally relevant agro‐industrial sector that ...
José Gómez‐Espinoza   +5 more
wiley   +1 more source

Sulfonation and characterization of styrene-indene copolymers for the development of proton conducting polymer membranes

open access: yesPolímeros, 2012
The aim of this work is to obtain polymer precursors based on styrene copolymers with distinct degrees of sulfonation, as an alternative material for fuel cell membranes.
Cristiane M. Becker   +5 more
doaj  

THE SULFONATION STUDY OF REACTION MECHANISM ON PAPAVERINE ALKALOID BY GC-MS AND FT-IR

open access: yesIndonesian Journal of Chemistry, 2010
The aim of this research was to prove theoretical mechanism reaction on the sulfonation of papaverine alkaloid and the result could be used as a reference on the transformation of these alkaloid to the other derivatives.
I Made Sudarma
doaj   +1 more source

Enhancing Enzyme-Mediated Cellulose Hydrolysis by Incorporating Acid Groups Onto the Lignin During Biomass Pretreatment

open access: yesFrontiers in Bioengineering and Biotechnology, 2020
Lignin is known to limit the enzyme-mediated hydrolysis of biomass by both restricting substrate swelling and binding to the enzymes. Pretreated mechanical pulp (MP) made from Aspen wood chips was incubated with either 16% sodium sulfite or 32% sodium ...
Jie Wu   +8 more
doaj   +1 more source

Sulfonasi Film Cptfe Tercangkok Stirena Untuk Membran Penghantar Proton Sel Bahan Bakar [PDF]

open access: yes, 2007
Sulfonation of cPTFE Film grafted Styrene for Proton Exchange Membrane Fuel Cell. Sulfonation of γ-rayiradiated and styrene-grafted crosslinked polytetrafluoroethylene film (cPTFE-g-S film) have been done. The aim of theresearch is to make hydropyl
Yohan, Y. (Yohan)
core  

Synthesis of Poly(Itaconate)s With High Monomer Conversion Applying Emulsion Polymerization

open access: yesJournal of Polymer Science, Volume 63, Issue 6, Page 1284-1296, 15 March 2025.
Itaconic acid and its derivatives are a promising and bio‐based substitute for oil‐based polymers such as acrylates. In this study, the optimization of polymerization of itaconic acid esters is described by applying emulsion polymerization leading to high reaction conversions and low residual monomer contents. ABSTRACT Itaconic acid and its derivatives
S. Charlotte Fischer von Mollard   +5 more
wiley   +1 more source

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