Results 21 to 30 of about 765,777 (264)

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

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
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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
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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
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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
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Effect of different ligands on the controlled polymerization of monodisperse polystyrene nanospheres by atom transfer radical polymerization in an aqueous emulsion

eXPRESS Polymer Letters, 2012
Polystyrene nanospheres have been synthesized by atom transfer radical polymerization (ATRP) to control the molecular weight distribution in the aqueous system. The crucial factor in such a system is the ligand that adjusts the solubility of the catalyst
E. J. Tang, M. Yuan, B. Y. Tian, S. J. Liu, P. J. Hu, X. Y. Zhao, D. S. Zhao   +6 more
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The Effects of Enzymes, Species, and Storage of Raw Material on Physicochemical Properties of Protein Hydrolysates from Whitefish Heads

Marine Drugs, 2023
The rest raw materials of whitefish have great potential for increased utilisation and value creation. Whitefish heads have a high protein content and should be considered a healthy protein source for the growing population’s demands for sustainable ...
Jannicke Fugledal Remme, Sigurd Korsnes, Stine Steen, Rachel Durand, Kristine Kvangarsnes, Janne Stangeland   +5 more
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The molecular weight (MW) and molecular weight distribution (MWD) of NR from different age and clone Hevea trees [PDF]

Songklanakarin Journal of Science and Technology (SJST), 2005
NR-latex was tapped from different age and clone Hevea trees. The latex of virgin started from 3 years trees was transesterified to reduce the branching molecules. The molecular weight (MW) and molecular weight distribution (MWD) of rubber molecules were
Saovanee Kovuttikulrangsie, Jitladda T. Sakdapipanich   +1 more
doaj  

Evaluation of the Hosemann-Schramek model to describe and predict experimental unimodal molecular weight distribution

Results in Materials
Simulating molecular weight distribution (MWD) is a crucial step in predicting the thermodynamic and rheological properties of polymer systems in computational modeling.
Ali AL-Jaberi, Aurélie Wender, Lama EL Haraty, Nicolas Ferrando, Benoit Creton, Wei Yan, Jean-Charles De Hemptinne   +6 more
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