Results 41 to 50 of about 4,209 (248)

Memory effects in polyethylenes : influence of processing and crystallization history [PDF]

open access: yes, 1990
The experimental timescale of memory effects related to restoring equilibrium viscoelastic properties in solution-cast linear and long-chain branched polyethylenes has been investigated.
Bastiaansen, CWM Cees   +5 more
core   +2 more sources

Decoding the dynamic extracellular matrix in cancer—3D models and bioscaffolds rewire the rules of tumor progression

open access: yesFEBS Letters, EarlyView.
Cancer progression is regulated by the dynamic matrix code of the tumor microenvironment, which influences cellular behavior and disease development. Importantly, matrix remodeling in three‐dimensional cancer models more accurately reflects in vivo conditions compared to conventional two‐dimensional systems.
Sylvia Mangani   +3 more
wiley   +1 more source

An Evaluation of Dilution Rheology for the Characterization of Long Chain Branching of Polyethylenes

open access: yesApplied Rheology, 2006
The purpose of this paper was to re-evaluate the novel rheological method of Crosby et al. [J. Rheol. 46 (2002) 401] to characterise long chain branching (LCB) in polyethylenes (PE) using the rheology of concentrated solutions.
Chai Choon K., Ang Swe Chong
doaj   +1 more source

Study on bonding ability of melt-spun polypropylene/polyethylene blend fibers

open access: yesJournal of Industrial Textiles, 2022
This article investigates melt spinning of polypropylene (PP) with high-density polyethylene (HDPE) and linear low-density polyethylene (LLDPE) blend fibers at different compositions, as well as the effects of HDPE and LLDPE on the bonding ability of ...
Tomik Moradi   +4 more
doaj   +1 more source

Structural and biochemical analysis of a B12 superbinder

open access: yesFEBS Letters, EarlyView.
BtuG proteins are vitamin B12 scavengers in Bacteroides thetaiotaomicron, a dominant human gut bacterium. We present crystal structures of three BtuG homologs bound to cobalamin and its precursor cobinamide, revealing picomolar binding affinities, among the highest known for any natural protein.
Jose M. Martinez Felices   +3 more
wiley   +1 more source

Solid-state drawing of polyethylenes: The pseudo-affine deformation scheme and aggregate models revisited

open access: yes, 1995
An investigation of the influence of solid-state drawing on the orientation and properties of a variety of polyethylenes is reported. As model materials, polyethylenes with rather extreme differences in molecular architecture (i.e.
Dirix, Y.J.L.   +3 more
core   +1 more source

Membrane composition and thermodynamic identity as boundaries of life for synthetic cell research

open access: yesFEBS Letters, EarlyView.
What makes a cell a cell? The boundary of a living cell is not just a wall. Read as a Markov blanket, the membrane separates internal from external states, generating identity and non‐equilibrium order. Can this identity be rebuilt from scratch in a synthetic cell?
Caterina Presutti, Bert Poolman
wiley   +1 more source

Tribological and oxidational properties of porous high-pressure crystallized and vitamin E–incorporated ultra-high-molecular weight polyethylene as an artificial cartilage

open access: yesAdvances in Mechanical Engineering, 2015
The material properties of porous high-pressure crystallized ultra-high-molecular weight polyethylene containing vitamin E as a plasticizing agent and an antioxidant were studied.
Chau-Chang Chou   +3 more
doaj   +1 more source

Effect of Palmitic Acid in the Acceleration of Polyethylene Biodegradation by Aspergillus oryzae

open access: yesJournal of Pure and Applied Microbiology, 2018
The biodegradation of High Density Polyethylene (HDPE) and Low Density Polyethylene (LDPE) by Aspergillus oryzae was examined in the current study. The optimal temperature, pH, favorable carbon and nitrogen sources for organism growth were determined ...
Vijayasree Jayaprakash   +1 more
doaj   +1 more source

Crosslinking Chlorosulfonated Polyethylenes

open access: yes, 1963
The broadening practical use of chlorosulfonated polyethylene elastomers for applications where good resistance to heat, oil, light, oxygen, and ozone is needed has been accelerated by the development of several chemically distinct curing systems ...
P. R. Johnson, J. T. Maynard
core   +1 more source

Home - About - Disclaimer - Privacy