Results 181 to 190 of about 58,518 (292)

Price Elasticities and Pricing Power in Emerging Markets: The Case of Petrochemicals Derived Plastics in South Africa [PDF]

open access: yes
This paper examines whether there necessarily exists a conflict between allocative and productive efficiency in small open economy markets. That productive efficiency favours market concentration is not in dispute, and the sole question we face is ...
Johannes Fedderke, Witness Simbanegavi
core   +1 more source

Supercritical CO2 Sorption Within Polymers Used in Medical Devices and Their Packaging

open access: yesJournal of Applied Polymer Science, Volume 143, Issue 4, January 20, 2026.
In situ CO2 sorption monitoring ensured the establishment of thermodynamic equilibrium in polymers used for medical devices and their packaging. All the studied polymers, except PETG, exhibited similar kinetic profiles, allowing the quantification of CO2 sorption and the resulting polymer swelling under thermodynamic equilibrium conditions. For PETG, a
Yasmine Masmoudi   +3 more
wiley   +1 more source

Polyethylene Melt Rupture and Slip in Simple Shear: A Visual and Mechanistic Study

open access: yesJournal of Applied Polymer Science, Volume 143, Issue 3, January 15, 2026.
Slip velocity transient curve (left) with images of the specimen at different times during a simple shear experiment. On the right, schematics illustrate the sample and its side view before and after simple shear. ABSTRACT Melt rupture of a bimodal molecular weight distribution polyethylene is studied under simple shear via flow visualization ...
Mohammadali Sattari   +2 more
wiley   +1 more source

LDPE reológiai paramétereinek meghatározása

open access: yesFiatal Műszakiak Tudományos Ülésszaka, 2010
András Szűcs, Gergely Tóth
openaire   +1 more source

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