Results 61 to 70 of about 648,084 (374)

Molar-mass distribution of urea-formaldehyde resins of different degrees of polymerization by MALDI-TOF mass spectrometry [PDF]

open access: yesJournal of the Serbian Chemical Society, 2010
This paper describes some results obtained in an investigation of urea-formaldehyde (UF) resins of different degrees of polymerisation by Matrix-Assisted Laser Desorption/Ionisation Time-of-Flight (MALDITOF) mass spectrometry (MS). MALDI-TOF MS proved to be an appropriate technique for analyzing these types of polymers, bearing in mind that the results
Gavrilovic-Grmusa, Ivana   +3 more
openaire   +3 more sources

Exploratory study on internal recycling of crude glycerol for biodiesel production: Catalyst replacement [PDF]

open access: yesChemical Industry and Chemical Engineering Quarterly, 2016
The present study evaluated the recycling of crude glycerol as source of catalyst for biodiesel production. For that purpose, two sets of experiments were conducted. In the first set (A), biodiesel was synthesized by conventional methanolysis of
Dias Joana M.   +3 more
doaj   +1 more source

Genetic and Environmental Variation in Starch Content, Starch Granule Distribution and Starch Polymer Molecular Characteristics of French Bread Wheat

open access: yesFoods, 2021
This study investigates genetic and environmental variation in starch content and characteristics of 14 French bread cultivars. Understanding the impact of these factors on wheat quality is important for processors and especially bakers to maintain and ...
Larbi Rhazi   +5 more
doaj   +1 more source

Structural instability impairs function of the UDP‐xylose synthase 1 Ile181Asn variant associated with short‐stature genetic syndrome in humans

open access: yesFEBS Letters, EarlyView.
The Ile181Asn variant of human UDP‐xylose synthase (hUXS1), associated with a short‐stature genetic syndrome, has previously been reported as inactive. Our findings demonstrate that Ile181Asn‐hUXS1 retains catalytic activity similar to the wild‐type but exhibits reduced stability, a looser oligomeric state, and an increased tendency to precipitate ...
Tuo Li   +2 more
wiley   +1 more source

Impact of limited solvent capacity on metabolic rate, enzyme activities, and metabolite concentrations of S. cerevisiae glycolysis [PDF]

open access: yes, 2008
The cell's cytoplasm is crowded by its various molecular components, resulting in a limited solvent capacity for the allocation of new proteins, thus constraining various cellular processes such as metabolism.
Barabási, AL   +3 more
core   +1 more source

A synthetic benzoxazine dimer derivative targets c‐Myc to inhibit colorectal cancer progression

open access: yesMolecular Oncology, EarlyView.
Benzoxazine dimer derivatives bind to the bHLH‐LZ region of c‐Myc, disrupting c‐Myc/MAX complexes, which are evaluated from SAR analysis. This increases ubiquitination and reduces cellular c‐Myc. Impairing DNA repair mechanisms is shown through proteomic analysis.
Nicharat Sriratanasak   +8 more
wiley   +1 more source

Heterogeneous molar mass distribution of chromophores in milled wood lignins isolated from four lignocellulosic species

open access: yesJournal of Wood Science
Lignin, a major component of lignocellulosic cell walls, is an aromatic polymer known to exhibit a high molar absorption coefficient and fluorescence properties in various solvents and polymeric environments.
Masatsugu Takada   +4 more
doaj   +1 more source

Highly Improved Electrospray Ionization-Mass Spectrometry Detection of G-Quadruplex-Folded Oligonucleotides and Their Complexes with Small Molecules [PDF]

open access: yes, 2017
G-quadruplexes are nucleic acids structures stabilized by physiological concentration of potassium ions. Because low stability G-quadruplexes are hardly detectable by mass spectrometry, we optimized solvent conditions: isopropanol in a triethylamine ...
Scalabrin, Matteo   +2 more
core   +1 more source

Enhancing Molar Mass Distributions of Lignosulfonates with Chemometry-Assisted Functional Group Profiling

open access: hybridACS Sustainable Chemistry & Engineering
Elisabeth Billich   +8 more
openaire   +2 more sources

Enzymatic degradation of biopolymers in amorphous and molten states: mechanisms and applications

open access: yesFEBS Open Bio, EarlyView.
This review explains how polymer morphology and thermal state shape enzymatic degradation pathways, comparing amorphous and molten biopolymer structures. By integrating structure–reactivity principles with insights from thermodynamics and enzyme engineering, it highlights mechanisms that enable efficient polymer breakdown.
Anđela Pustak, Aleksandra Maršavelski
wiley   +1 more source

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