Filter

Refine by Access

Refine by Collections

Refine by Type

Refine by Date

—
  • Print
  • Save

Search Results

You are looking at 1 - 2 of 2 items for

  • Author or Editor: Jan Peters x
  • Refine by Access: All Content x
Clear All Modify Search

Flow-induced crystallization of propylene/ethylene random copolymers

Journal of Thermal Analysis and Calorimetry
Volume/Issue:
Volume 98: Issue 3
DOI:
https://doi.org/10.1007/s10973-009-0532-3
Authors:
Jan-Willem Housmans
,
Gerrit Peters
, and
Han Meijer

Abstract  

The influence of the co-monomer content and processing conditions on the crystallization kinetics of propylene/ethylene (P/E) random copolymers is studied using DSC and rheometry. The presence of ethylene lowers the melting and crystallization temperature compared to pure polypropylene, and the quiescent crystallization rate,
\documentclass{aastex} \usepackage{amsbsy} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{bm} \usepackage{mathrsfs} \usepackage{pifont} \usepackage{stmaryrd} \usepackage{textcomp} \usepackage{upgreek} \usepackage{portland,xspace} \usepackage{amsmath,amsxtra} \pagestyle{empty} \DeclareMathSizes{10}{9}{7}{6} \begin{document} $$\dot{X},$$ \end{document}
increases at equal nominal undercooling, because both the crystal growth rate, G, and number of nuclei, N, increases. The effect of flow on the kinetics of crystallization decreases with the ethylene content. Still, different regimes of flow-induced crystallization are observed, but their size and the position of the transitions between them depend on the ethylene content, and can be expressed in terms of the level of molecular orientation, molecular stretch, and crystallization capacity of the system.
Open access

The landscape of open science in behavioral addiction research: Current practices and future directions

Journal of Behavioral Addictions
Volume/Issue:
Accepted Manuscript / Online First
DOI:
https://doi.org/10.1556/2006.2023.00052
Authors:
Charlotte Eben
,
Beáta Bőthe
,
Damien Brevers
,
Luke Clark
,
Joshua B. Grubbs
,
Robert Heirene
,
Anja Kräplin
,
Karol Lewczuk
,
Lucas Palmer
,
José C. Perales
,
Jan Peters
,
Ruth J. van Holst
, and
Joël Billieux

Abstract

Open science refers to a set of practices that aim to make scientific research more transparent, accessible, and reproducible, including pre-registration of study protocols, sharing of data and materials, the use of transparent research methods, and open access publishing. In this commentary, we describe and evaluate the current state of open science practices in behavioral addiction research. We highlight the specific value of open science practices for the field; discuss recent field-specific meta-scientific reviews that show the adoption of such practices remains in its infancy; address the challenges to engaging with open science; and make recommendations for how researchers, journals, and scientific institutions can work to overcome these challenges and promote high-quality, transparently reported behavioral addiction research. By collaboratively promoting open science practices, the field can create a more sustainable and productive research environment that benefits both the scientific community and society as a whole.

Open access