Results 31 to 40 of about 774,640 (308)

Shaping of molecular weight distribution using b-spline based predictive probability density function control

, 2004
Issues of modelling and control of molecular weight distributions (MWDs) of polymerization products have been studied under the recently developed framework of stochastic distribution control, where the purpose is to design the required control inputs ...
Zhang, J.F., null Liulin Cao, Yue, H., null Hong Yue, Wang, H., null Jinfang Zhang, Hong Wang, Cao, L.   +7 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

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
doaj   +1 more source

Shaping of molecular weight distribution by iterative learning probability density function control strategies

, 2008
A mathematical model is developed for the molecular weight distribution (MWD) of free-radical styrene polymerization in a simulated semi-batch reactor system.
Yue, H., Wang, H., Zhang, J., Wang, H.; id_orcid   +3 more
core   +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

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  

Effects of Molecular Iodine and 4-tert-Butylcatechol Radical Inhibitor on the Radical Polymerization of Styrene [PDF]

علوم و تکنولوژی پلیمر, 2017
The presence of molecular iodine was studied in relation the molecular weight and molecular weight distribution of polystyrene, produced by radical poly merization.
Mojtaba Bozorg, Mahdi Abdollahi, Mohammad Ali Semsarzadeh   +2 more
doaj   +1 more source

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
doaj   +1 more source

Employing Moment Equations Model to Study the Effect of Different Active Centers on Homopolymerization Kinetics of Ethylene [PDF]

علوم و تکنولوژی پلیمر, 2008
Ethylene was homopolymerized over Ziegler-Natta catalyst and the homopolymerization was modeled using moment equations. Mechanism was modeled according to five different reaction centers of catalyst.
M. Salami-Kalajahi, M. Najafi, V. Haddadi-Asl, S.M. Ghafelebashi-Zarand   +3 more
doaj   +1 more source

Zeolite-Containing Co Catalysts for Fischer–Tropsch Synthesis with Tailor-Made Molecular-Weight Distribution of Hydrocarbons

Reactions, 2023
The review is dedicated to the topical field of research aimed at creating catalysts combining several types of active sites. At the same time, the composition of Fischer–Tropsch synthesis (FTS) products can be controlled by changing the strength and ...
Lilia Sineva, Vladimir Mordkovich, Ekaterina Asalieva, Valeria Smirnova   +3 more
doaj   +1 more source