Results 11 to 20 of about 369,068 (285)

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

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

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

Influence of xylene on the dielectric response of an organoclay-containing nanocomposite

open access: yesIET Nanodielectrics, 2020
The dielectric effect, investigated using dielectric spectroscopy and DC dielectric breakdown strength measurements, of introducing xylene into a composite system containing polyethylene, a co-polymer of ethylene and vinyl acetate and an organoclay can ...
Allison V. Shaw   +3 more
doaj   +1 more source

Influence of Microplastics on the Growth and the Intestinal Microbiota Composition of Brine Shrimp

open access: yesFrontiers in Microbiology, 2021
Microplastics (MPs) are ubiquitous in the aquatic environment and can be frequently ingested by zooplankton, leading to various effects. Brine shrimp (Artemia parthenogenetica) has an important role in the energy flow through trophic levels in different ...
Hongyu Li   +10 more
doaj   +1 more source

Evaluation of photodegradation in LDPE/modified starch blends

open access: yesPolímeros, 2009
Photodegradation of LDPE/modified starch blends 80/20 m/m has been examined by scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR) and X ray diffraction (DRX) before and after exposure to ultraviolet radiation (UV). Samples
Flávia G. D. Ferreira   +3 more
doaj   +1 more source

Synthesis of high molecular weight polyethylene using FI catalyst [PDF]

open access: yesPolyolefins Journal, 2014
A FI Zr-based catalyst of bis[N-(3,5-dicumylsalicylidene)-2′,6′­diisopropylanilinato]zirconium(IV) dichloride was prepared and used for polymerization of ethylene. The effects of reaction conditions on the polymerization were examined in detail.
G. Zohuri   +4 more
doaj   +1 more source

High porosity polyethylene aerogels [PDF]

open access: yesPolyolefins Journal, 2015
Monolithic aerogels of high molecular weight polyethylene (Mw= 3x106- 6x106 g/mol) have been prepared by solvent extraction with supercritical carbon dioxide from thermoreversible gels prepared in decalin.
Christophe Daniel   +2 more
doaj   +1 more source

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