Results 21 to 30 of about 185,186 (338)

Does Notch play a tumor suppressor role across diverse squamous cell carcinomas? [PDF]

open access: yes, 2016
The role of Notch pathway in tumorigenesis is highly variable. It can be tumor suppressive or pro-oncogenic, typically depending on the cellular context.
Biswas, Sangita   +5 more
core   +1 more source

Improving the Separation Properties of Polybenzimidazole Membranes by Adding Acetonitrile for Organic Solvent Nanofiltration

open access: yesMembranes, 2023
In research on membranes, the addition of co-solvents to the polymer dope solution is a common method for tuning the morphology and separation performance.
Ga Yeon Won   +7 more
doaj   +1 more source

Estudo da densidade de ligações Cruzadas em géis superabsorventes obtidos do acetato de celulose Study of the crosslinking density in superabsorbent gels obtained from cellulose acetate

open access: yesPolímeros, 2012
Neste trabalho foram realizadas sínteses de géis derivados de acetato de celulose (AC) com grau de substituição (GS) 2,5 por intermédio de reações de reticulação via esterificação.
André M. Senna   +2 more
doaj   +1 more source

Crosslinked Fibroin Nanoparticles: Investigations on Biostability, Cytotoxicity, and Cellular Internalization

open access: yesPharmaceuticals, 2020
Recently, crosslinked fibroin nanoparticles (FNP) using the crosslinker 1-ethyl-3-(3-dimethylaminopropyl) carbodiimide hydrochloride (EDC) or the polymer poly(ethylenimine) (PEI) have been developed and showed potentials as novel drug delivery systems ...
Duy Toan Pham   +4 more
doaj   +1 more source

Stress intensification – an abnormal phenomenon observed during stress relaxation of dynamic coordination polymer

open access: yeseXPRESS Polymer Letters, 2016
The authors report that during tensile stress relaxation test of a polyurethane crosslinked by catechol-iron coordination bonds, the stress gradually increases with time after the initial drop, which differs from the documented behaviors of other ...
N. N. Xia   +3 more
doaj   +1 more source

A statistical theory of polymer network degradation [PDF]

open access: yes, 2014
A statistical theory was proposed for the degradation (random scission of chains) of a network having f-functional nodes in the case where all chains contain equireactive groups and a chain scission event does not create new groups or suppress more than ...
GILORMINI, Pierre   +2 more
core   +6 more sources

Synthesis, Characterization, Swelling Behavior and Metal Uptake Studies of Dichloroglyoxime Crosslinked Chitosan Derivative

open access: yesHittite Journal of Science and Engineering, 2019
New crosslinked derivative of chitosan was prepared by the condensation reaction of chitosan CS and dichloro glyoxime. Structural analysis of chitosan derivative CSL was performed by elemental analysis C, H, N , SEM measurements, FT-IR, solid ...
Mahir Timur
doaj   +1 more source

Biodegradable Hydrogels: Evaluation of Degradation as a Function of Synthesis Parameters and Environmental Conditions

open access: yesSoil Systems, 2021
The development of functional materials that promote the infiltration and retention of water and the controlled release of fertilizers and nutrients in soil is of interest in agriculture. In this context, hydrogels, three-dimensional polymeric structures
Chiara Turioni   +5 more
doaj   +1 more source

Efficiency of Zinc and Calcium Ion Crosslinking in Alginate-coated Nitrogen Fertilizer

open access: yesOrbital: The Electronic Journal of Chemistry, 2018
The work evaluated the difference of nitrogen retention in sodium alginate hydrogel microspheres with 50% of nitrogen, to allow the production of controlled release fertilizers.
Claudia Dyana santos Peretiatko   +3 more
doaj   +1 more source

Optimalisasi Sifat Reologi Hidrogel Kitosan-Hialuronat yang Ditaut-Silang dengan Glutaraldehida

open access: yesAlchemy, 2019
Kitosan membentuk hidrogel polikationik dengan penambahan glutaraldehida sebagai penaut-silang. Penambahan hialuronat yang bersifat polianionik diharapkan akan meningkatkan sifat reologis hidrogel tersebut.
Pajri Samsi Nasution   +3 more
doaj   +1 more source

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