Results 101 to 110 of about 105,801 (230)

"Comparison of structure and properties of nitrile rubber 40 H and 3604 by hot polymerization"

open access: yesHecheng xiangjiao gongye
Molecule structure and glass transition temperature of raw rubber of the new nitrile rubber (NBR) 40 H by hot polymerization, and Mooney viscosity and curing characteristics of the compound, as well as thermal-oxidative aging resistance and oil ...
XU Bina, ZHANG Hai-yib, FAN Yong-jiangc, LI Dong-hongc, CUI Guo-fenga, LIU Qianga, GAO Wei-guangc
doaj   +1 more source

Discrete Relaxation Spectrum and K-BKZ Constitutive Equation for PVC, NBR and Their Blends

open access: yesApplied Rheology, 2004
Frequency sweep experiments were performed on poly(vinyl chloride) (PVC) and acrylonitrile butadiene rubber (NBR) as well as their miscible blends PVC/NBR (70/30), PVC/NBR (50/50), and PVC/NBR (30/70) in oscillatory shear.
Sodeifian Gholamhossein, Haghtalab Ali
doaj   +1 more source

Pengaruh suhu vulkanisasi terhadap sifat mekanis vulkanisat karet alam dan karet akrilonitril-butadiena

open access: yesMajalah Kulit, Karet, dan Plastik, 2015
Natural and acrylonitrile-butadiene rubbers possess different vulcanization characteristics. Selection of the vulcanization system and temperature affects the mechanical properties of vulcanized natural rubber (NR) and acrylonitrile-butadiene rubber (NBR)
Norma Arisanti Kinasih   +2 more
doaj   +1 more source

Self Dilution of Model Polystyrene Pom‐Poms and Combs by Unentangled Side Arms

open access: yesMacromolecular Rapid Communications, Volume 47, Issue 9, 5 May 2026.
This study uses experimental rheological data of 4 model polystyrene pom‐poms and 2 model polystyrene combs, all with unentangled arms, and constitutive modelling using Enhanced Relaxation of Stretch (ERS) model to show that the elongational rheology of the branched polymers is equivalent to that of polymer melts consisting of long linear chains ...
Max G. Schußmann   +3 more
wiley   +1 more source

Bee community and trait‐based responses to fire in a Mediterranean landscape

open access: yesInsect Conservation and Diversity, Volume 19, Issue 3, Page 530-547, May 2026.
Fire drives a short‐term increase in bee abundance and diversity, despite its strong negative impact on floral resources. Acting as an environmental filter, fire shapes bee communities as increased post‐fire fine‐scale heterogeneity favors bees with specific functional traits such as ground‐nesting and generalist species.
Georgios Nakas   +8 more
wiley   +1 more source

ESTUDO COMPARATIVO DA UTILIZAÇÃO DA ABNT NBR 15200:2012 E DA ABNT NBR 6118:2014

open access: yesREINPEC, 2016
Com a crescente preocupacao com seguranca das vidas humanas e da seguranca patrimonial, ao desenvolver o dimensionamento de uma estrutura de concreto armado o Engenheiro Civil deve ter conhecimento das normas tecnicas construtivas e das normas tecnicas para considerar situacoes extremas de ocorrencia inusitada, como e o caso de incendios.
Camila Rosa Galvão da Costa   +4 more
openaire   +1 more source

A Geometric Perspective on Sparse Filtrations [PDF]

open access: yes, 2015
We present a geometric perspective on sparse filtrations used in topological data analysis. This new perspective leads to much simpler proofs, while also being more general, applying equally to Rips filtrations and Cech filtrations for any convex metric.
Cavanna, Nicholas J.   +2 more
core  

Technological Properties of Biocomposites Produced With Agro‐Industrial Castor Waste Applicable in the Thermal Insulation of Buildings

open access: yesPolymer Composites, Volume 47, Issue 8, Page 7360-7378, 20 April 2026.
Biocomposites produced with agro‐industrial waste from castor hulls and pinewood bonded with urea‐formaldehyde adhesive, intended for application as thermal insulation in buildings. ABSTRACT The production of composite particleboards with agricultural waste has been the focus of many studies that aim to address environmental problems due to waste ...
Thamirys Andrade Lopes   +7 more
wiley   +1 more source

Novel blends of acrylonitrile butadiene rubber and polyurethane-silica hybrid networks

open access: yeseXPRESS Polymer Letters, 2012
Novel blends of acrylonitrile butadiene rubber (NBR) and polyurethane-silica (PU-SiO2) hybrid networks have been prepared by melt blending. The PU-SiO2 hybrid networks were formed via the reaction of NCO groups of NCO-terminated PU prepolymer and OH ...
X. P. Wang   +4 more
doaj   +1 more source

Predicting Scheduling Failures in the Cloud

open access: yes, 2015
Cloud Computing has emerged as a key technology to deliver and manage computing, platform, and software services over the Internet. Task scheduling algorithms play an important role in the efficiency of cloud computing services as they aim to reduce the ...
Khomh, Foutse   +2 more
core  

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