Results 11 to 20 of about 765,777 (264)

Study of the Molecular-Weight Distribution of Binder Pitches for Carbon Blocks [PDF]

ACS Omega, 2021
Jong Hoon Cho, Min Il Kim, Ji Sun Im
doaj   +2 more sources

Molecular Characteristics and Antioxidant Activity of Spruce (Picea abies) Hemicelluloses Isolated by Catalytic Oxidative Delignification

Molecules, 2022
Spruce (Piceaabies) wood hemicelluloses have been obtained by the noncatalytic and catalytic oxidative delignification in the acetic acid-water-hydrogen peroxide medium in a processing time of 3–4 h and temperatures of 90–100 °C. In the catalytic process,
Valentina S. Borovkova, Yuriy N. Malyar, Irina G. Sudakova, Anna I. Chudina, Andrey M. Skripnikov, Olga Yu. Fetisova, Alexander S. Kazachenko, Angelina V. Miroshnikova, Dmitriy V. Zimonin, Vladislav A. Ionin, Anastasia A. Seliverstova, Ekaterina D. Samoylova, Noureddine Issaoui   +12 more
doaj   +1 more source

Physicochemical Properties of ACE Inhibitory Peptides from Jujube Kernel by Enzymatic Method

Shipin gongye ke-ji, 2022
In this study, the defatted jujube kernel residue was extracted by alkali solubilization and acid seperation method to obtain jujube kernel protein, and the angiotensin converting enzyme (ACE) inhibitory peptide was obtained by enzymatic hydrolysis of ...
Liming TAN, Yan CAO, Haisheng PEI, Jianxiong HAO, Huiying LI   +4 more
doaj   +1 more source

Rheological measurement of molecular weight distribution of polymers

e-Polymers, 2013
This paper has described a method to obtain the molecular weight distribution (MWD) of polymeric materials from their rheological data. The method has been developed for linear polymers with log normal molecular weight distribution.
Khak Maryam, Ramazani Ahmad
doaj   +1 more source

Alargamento da distribuição de massa molar de polímeros sintetizados com catalisadores metalocênicos dual-site Broadening of molecular weight distribution of polymers synthesized by metallocene-based dual-site catalysts

Química Nova, 2008
The main topics related to the use of dual-site catalysts in the production of polymers with broad molecular weight distribution are reviewed. The polymerization using dual-site catalysts is more economical and allows to produce a higher quality product ...
João H. Z. dos Santos, Adriano G. Fisch, Nilo S. M. Cardozo, Argimiro R. Secchi   +3 more
doaj   +1 more source

A Comparative Study between FRP and ATRP of Styrene by Monte Carlo Simulation: Effect of Free Radical Mobility [PDF]

علوم و تکنولوژی پلیمر, 2010
Styrene polymerization through FRP and ATRP methods was carried out at 110oC, while in-depth studies were performed by Monte Carlo simulation.The changes in monomer conversion, initiator concentration, average molecular weight, and polydispersity index ...
M. Najafi, H. Roghani-Mamaqani, M. Salami-Kalajahi, V. Haddadi-Asl   +3 more
doaj   +1 more source

Optimization of Preparation Process of Antioxidant Peptides in the Visceral Mass of Cucumaria frondosa by Response Surface Methodology and Its Composition Analysis

Shipin gongye ke-ji, 2022
Using the protein of Cucumaria frondosa visceral mass as raw material, antio-xidant peptides were prepared by enzymatic hydrolysis with complex protease.
Yunlong GAO, Menghao XU, Xiangzhong ZHAO
doaj   +1 more source

Molecular Weight Distribution of Proteins [PDF]

Nature, 1946
THE recent publication1 of an examination of Svedberg's theory of molecular weight distribution, in which the theory is considered to be invalid, suggests that a treatment, similar in some of its details, might be of interest. This was prepared in 19442, and the conclusions agree with those of Johnston, Longuet-Higgins and Ogston1, and with those of ...
openaire   +2 more sources

The application of HP-GFC chromatographic method for the analysis of oligosaccharides in bioactive complexes [PDF]

Hemijska Industrija, 2009
The aim of this work was to optimize a GFC method for the analysis of bioactive metal (Cu, Co and Fe) complexes with olygosaccharides (dextran and pullulan). Bioactive metal complexes with olygosaccharides were synthesized by original procedure.
Savić Ivan, Nikolić Goran, Savić Ivana, Cakić Milorad   +3 more
doaj   +1 more source

The Molecular Weight Distribution of Occluded Hydrocarbon Gases in the Khibiny Nepheline–Syenite Massif (Kola Peninsula, NW Russia) in Relation to the Problem of Their Origin

Geosciences, 2022
The origin of hydrogen–hydrocarbon gases present in the rocks of the Khibiny massif in unusually high concentrations has been the subject of many years of discussion.
Valentin A. Nivin, Vyacheslav V. Pukha, Olga D. Mokrushina, Julia A. Mikhailova   +3 more
doaj   +1 more source