Results 21 to 30 of about 10,480,471 (300)

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

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

Seasonal Changes in Qualitative and Quantitative Characteristics of Humic Substances in Waters of Different Genesis: Membrane Technologies and Equilibrium Processes

Membranes, 2023
Membrane filtration methods were applied in this study to research natural waters specification (and speciation). Lysimetric waters (soil waters) of background territories in different seasons are considered.
Marina Dinu
doaj   +1 more source

Effect of Molecular Structure of Oil on the Film Thickness during Rolling

Tribology Online, 2009
In recent years, metal working oil is required to have lower viscosity and higher lubricity than ever. Controlling oil film thickness is one of the most important in metal working.
Takamichi Watanabe, Yasuhiro Hosomi
doaj   +1 more source

Evaluation of Molecular Weight Distribution of Sericin in Solutions Concentrated via Precipitation by Ethanol and Precipitation by Freezing/Thawing

Chemical Engineering Transactions, 2014
Sericin is a globular water-soluble protein that constitutes 25 to 30 % of silk proteins weight in silkworm`s cocoons. This protein envelopes silk fibers gluing them and ensuring the cohesion of the cocoon.
T.L. Da Silva, A.C. da Silva Junior, M. Ribani, M.G.A. Vieira, M.L. Gimenes, M.G.C. Da Silva   +5 more
doaj   +1 more source

High and low molecular weight crossovers in the longest relaxation time dependence of linear cis-1,4 polyisoprene by dielectric relaxations [PDF]

, 2010
The dielectric relaxation of cis-1,4 Polyisoprene [PI] is sensitive not only to the local and segmental dynamics but also to the larger scale chain (end-to-end) fluctuations.
Alegría, Angel, Riedel, Clément, Colmenero, Juan, Tordjeman, Philippe, Colmenero de León, Juan   +4 more
core   +1 more source

SEC2MWD: A MATLAB toolbox for derivation of molecular weight distributions from size exclusion chromatography

SoftwareX
Size exclusion chromatography (SEC) is a type of liquid chromatography used for separating molecules based on their size. The pipeline for converting a raw chromatogram to a molecular weight distribution involves multiple steps and require various ...
Ingrid Måge, Josipa Matić, Katinka Riiser Dankel   +2 more
doaj   +1 more source

General route to design polymer molecular weight distributions through flow chemistry

Nature Communications, 2020
The properties of a polymer are known to be intrinsically related to its molecular weight distribution. Here the authors use a design to synthesis protocol for producing a targeted molecular weight distribution with a computer controlled tubular flow ...
Dylan J. Walsh, Devin A. Schinski, Robert A. Schneider, Damien Guironnet   +3 more
doaj   +1 more source

One-step enzymatic synthesis of medium molecular weight dextran using engineered dextransucrase DarM from Leuconostoc citreum CBA3623

Frontiers in Microbiology
The dextransucrase DarM from Leuconostoc citreum CBA3623, a large GH70 family enzyme of approximately 213 kDa, was refractory to full-length expression in E. coli.
Wenchao Zhang, Wenchao Zhang, Xingyue Wang, Xingyue Wang, Jinsong Liu, Shiyong Huang, Liyan Yang, Juan Li, Maochun Wei, Zhuangjian Qin, Dengfeng Yang, Lixia Pan   +11 more
doaj   +1 more source