Results 31 to 40 of about 415,263 (341)

A polystyrene-water calorimeter [PDF]

open access: yesThe International Journal of Applied Radiation and Isotopes, 1983
The paper describes a new type of calorimeter that can be quickly put into operation for determining absorbed dose at a point in polystyrene. It also describes a unique method of decreasing drifts in electrical signals caused by temperature gradients. Two calibrated thermistors were placed close together between sandwiched polystyrene discs that were ...
openaire   +4 more sources

Glass transition and alpha-relaxation dynamics of thin films of labeled polystyrene

open access: yes, 2008
The glass transition temperature and relaxation dynamics of the segmental motions of thin films of polystyrene labeled with a dye, 4-[N-ethyl-N-(hydroxyethyl)]amino-4-nitraozobenzene (Disperse Red 1, DR1) are investigated using dielectric measurements ...
A. Dhinojwala   +6 more
core   +1 more source

Preparation of Functional Long‐Subchain Hyperbranched Polystyrenes via Post‐polymerization Modification: Study on the Critical Role of Chemical Stability of Branching Linkage

open access: yesChemistryOpen, 2020
Post‐polymerization modification (PPM) is one of the most powerful strategy for preparing polymers with functional groups that cannot be synthesized by direct polymerization.
Mo Zhu   +4 more
doaj   +1 more source

Graphene Oxide/Polystyrene Bilayer Gate Dielectrics for Low-Voltage Organic Field-Effect Transistors

open access: yesApplied Sciences, 2018
Here, we report on the use of a graphene oxide (GO)/polystyrene (PS) bilayer as a gate dielectric for low-voltage organic field-effect transistors (OFETs). The hydrophilic functional groups of GO cause surface trapping and high gate leakage, which can be
Sooji Nam   +4 more
doaj   +1 more source

Secondary Crystallization of Isotactic Polystyrene [PDF]

open access: yes, 1974
When isotactic polystyrene (i-PS) is crystallized from the melt or from the glassy state at rather large supercooling an additional melting peak appears on the curve during scanning in a differential calorimeter.
Challa, G.,   +2 more
core   +2 more sources

Crown Ether-Modified Clays and their Polystyrene Nanocomposites [PDF]

open access: yes, 2002
Crown ether-modified clays were obtained by the combination of sodium and potassium clays with crown ethers and cryptands. Polystyrene nanocomposites were prepared by bulk polymerization in the presence of these clays.
Jao, Hongyang   +3 more
core   +2 more sources

Effect of Surface Modification of Nanosilica on the Viscoelastic Properties of Its Polystyrene Nanocomposite [PDF]

open access: yesعلوم و تکنولوژی پلیمر, 2008
The preparation and characterization of the vinyltriethoxysilane-modified silica nanoparticles were investigated. Also the surface tension of polystyrene, native (hydrophilic) silica and silane-modified (hydrophobic) silica were determined.
M. Mortezaei   +2 more
doaj   +1 more source

Insecticide-treated nets against malaria vectors and polystyrene beads against Culex larvae.

open access: yes, 2005
In Parasitology Today in 1985, Curtis and Lines, and Curtis and Minjas presented the ideas of insecticide-treated nets and polystyrene beads for mosquito control.
Curtis, Chris
core   +1 more source

Study of Atom Transfer Radical Polymerization of Styrene and Its Gel Effect by Monte Carlo Simulation Method [PDF]

open access: yesعلوم و تکنولوژی پلیمر, 2009
Atom transfer radical polymerization (ATRP) of styrene was carried out at 105°C and a Monte Carlo simulation was employed to model the system. The variations of monomer conversion, the initiator concentration, average molecular weight, and molecular ...
M. Najafi   +3 more
doaj   +1 more source

Goodbye flat lymphoma biology

open access: yesFEBS Letters, EarlyView.
Three‐dimensional (3D) biological systems have become key tools in lymphoma research, offering reliable in vitro and ex vivo platforms to explore pathogenesis and support precision medicine. This review highlights current 3D non‐Hodgkin lymphoma models, detailing their features, advantages, and limitations, and provides a broad perspective on future ...
Carla Faria   +3 more
wiley   +1 more source

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