Results 11 to 20 of about 831,069 (328)

Study of Slurry Ethylene Polymerization with Ziegler-Natta Catalysts: Kinetics and Investigation on the Rate of Monomer Consumption Equation [PDF]

open access: yesعلوم و تکنولوژی پلیمر, 2008
In the current work, ethylene polymerization was investigated from a mathematical modeling point of view. The initiation (activation), propagation, termination, and deactivation reactions were taken into account and the relevant equations used in the ...
M. Salami-Kalajahi   +2 more
doaj   +1 more source

Aqueous synthesis of Nb-modified SnO2 quantum dots for efficient photocatalytic degradation of polyethylene for in situ agricultural waste treatment

open access: yesGreen Processing and Synthesis, 2021
Low density polyethylene is widely used in agricultural production. It is of low cost and able to significantly improve the quality of fruits. However, its decomposition under natural circumstances needs more than one hundred of years.
Shao Jia   +9 more
doaj   +1 more source

Changes in signal transmission speed in coaxial cables through regulating the foam structure of the polyethylene dielectric section [PDF]

open access: yesPolyolefins Journal, 2021
Polyolefins have been widely used in the electrical insulation and cable industry in recent years. One of the main usages of these materials is dielectric insulation in coaxial cables.
Milad Moradian   +2 more
doaj   +1 more source

A new gas discharge process for preparation of non-fouling surfaces on biomaterials [PDF]

open access: yes, 1993
A non-fouling surface containing immobilized polyethylene oxide (PEO) was achieved using an argon radio-frequency glow discharge treatment (RFGD) of polyethylene films precoated with Brij hydrocarbon-PEO surfactants.
Feijen, J.   +3 more
core   +2 more sources

STUDY OF FAST ELECTRON IRRADIATION EFFECT ON THE STRUCTURE AND SURFACE OF POLYAMIDE/ POLYETHYLENE/ETHYLENE VINYL ACETATE FILM MATERIAL USING THE UELR 10-10-40 PLANT

open access: yesПищевые системы, 2019
Radiation effect on the PA/PE/Eva film material with a thickness of 55 μm was investigated at theBurnazyanCenterusing radiation processing plant (RPP) with the UELR‑10–10–40 accelerator at 10 MeV.
V. T. Tarasyuk   +4 more
doaj   +1 more source

Detection of surface-adsorbed (lipo)proteins by means of a two-step enzyme-immunoassay: a study on the Vroman effect [PDF]

open access: yes, 1990
In view of reports on the involvement of high-molecular-weight (HMW) kininogen and high-density lipoprotein (HDL) in the Vroman effect, we studied the adsorption of fibrinogen, HMW kininogen, HDL and several other proteins from pooled human plasma and ...
Aken, W.G. van   +3 more
core   +2 more sources

High Melting Point of Linear, Spiral Polyethylene Nanofibers and Polyethylene Microspheres Obtained Through Confined Polymerization by a PPM‐Supported Ziegler‐Natta Catalyst

open access: yesChemistryOpen, 2020
In this work, different types of polyethylene (linear, spiral nanofibers and microspheres) were obtained via confined polymerization by a PPM‐supported Ziegler‐Natta catalyst.
Dr. Yu Xiao   +3 more
doaj   +1 more source

Influência da embalagem na vida útil de presuntos fatiados Packing influence on the shelf life of sliced ham

open access: yesCiência e Agrotecnologia, 2007
Visou-se com este trabalho, comparar a vida útil de presunto fatiado sem capa de gordura (condicionadas à temperatura entre -1 e 4ºC), usando os tratamentos: sistema de embalagem a vácuo (EV) e sistema de embalagem com atmosfera modificada (AM) (50% de ...
Maria Cristina Bressan   +5 more
doaj   +1 more source

Research on the Migration and Transformation Behavior of Microplastics in Groundwater Systems and Their Ecological Health Risks [PDF]

open access: yesE3S Web of Conferences
A comprehensive approach integrating laboratory column experiments, field monitoring, and adsorption-desorption studies was employed to investigate the migration mechanisms of microplastics (MPs) in groundwater systems and their associated compound ...
Xu Haotian
doaj   +1 more source

Polyethylene Glycol Camouflaged Earthworm Hemoglobin. [PDF]

open access: yes, 2017
Nearly 21 million components of blood and whole blood and transfused annually in the United States, while on average only 13.6 million units of blood are donated. As the demand for Red Blood Cells (RBCs) continues to increase due to the aging population,
Cabrales, Pedro   +8 more
core   +3 more sources

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