Results 11 to 20 of about 19,408 (166)

Preparation of Polyurethane/Clay Nanocomposites: Investigating the Dispersion of Organoclays in PTMEG [PDF]

open access: yesعلوم و تکنولوژی پلیمر, 2007
Good dispersion of nano-particles in polymer matrices is a crucial parameter in determining the final properties of polymer nanocomposites. In this work, the distributions of Cloisite 30B, Cloisite 10A and Cloisite 93A in PTMEG, popular polyols in the ...
B. Kaffashi   +2 more
doaj   +1 more source

Boron mobility in eucalyptus clones Mobilidade de Boro em clones de eucalipto

open access: yesRevista Brasileira de Ciência do Solo, 2009
Understanding the magnitude of B mobility in eucalyptus may help to select clones that are more efficient for B use and to design new practices of B fertilization.
Jackson Freitas Brilhante de São José   +8 more
doaj   +1 more source

The cryoprotective effects of erythritol on frozen-thawed ram sperm [PDF]

open access: yesThe Iranian Journal of Veterinary Science and Technology, 2019
This study was conducted to evaluate the effect of replacing glycerol with erythritol on cryopreservation of ram spermatozoa. Semen samples (n=24) were collected from four rams in six times. In each session, the collected ejaculates (n=4) were pooled and
Majid Alaeipour   +1 more
doaj   +1 more source

Optimizing synthesis parameters of silver nanowires by polyol method [PDF]

open access: yesمواد نوین, 2021
Introduction: Silver nanowires are 1D nanostructures, with diameter of 10 – 200 nm and length of 5-100 μm.  Recently, polyol method has been known as a successful method for synthesis of silver nanowires.
Sayed Ahmad Hashempour Cheshmegol   +1 more
doaj   +1 more source

Importance des corps gras dans le domaine des tensioactifs

open access: yesOléagineux, Corps gras, Lipides, 2006
This article is willing to show through different industrial examples the role played by the oleochemistry in the development of new surfactants. This field offers indeed a large choice of alkyl chains that can be transformed. Linked to a polar head such
Guilbot Jérôme
doaj   +1 more source

SYNTHESIS OF HIGH ASPECT RATIO SILVER NANOWIRES: PARAMETRIC STUDY OF THE POLYOL PROCESS

open access: yesJournal of Advanced Materials in Engineering, 2021
Silver nanowires (AgNWs) are considered as one-dimensional nanostructures, which have received much attention due to their nanoscale size, high aspect ratio, high electrical and thermal conductivity, optical transparency and high mechanical stability ...
R. Karimi-Chaleshtori   +2 more
doaj  

Effect of erythritol on microbial ecology of in vitro gingivitis biofilms

open access: yesJournal of Oral Microbiology, 2017
Gingivitis is one of the most common oral infections in humans. While sugar alcohols such as erythritol are suggested to have caries-preventive properties, it may also have beneficial effects in prevention of gingivitis by preventing maturation of oral ...
Marleen Marga Janus   +7 more
doaj   +1 more source

Trichophycin A, a Cytotoxic Linear Polyketide Isolated from a Trichodesmium thiebautii Bloom

open access: yesMarine Drugs, 2017
In an effort to isolate and characterize bioactive secondary metabolites from Trichodesmium thiebautii blooms, collected cyanobacteria biomass was subjected to bioassay-guided extraction and fractionation using the human colon cancer cell line HCT-116 ...
Matthew J. Bertin   +4 more
doaj   +1 more source

Towards Circular Economy: Different Strategies for Polyurethane Waste Recycling and the Obtaining of New Products

open access: yesProceedings, 2018
As a consequence of the high production and simultaneous consumption of polyurethanes (PU) a great volume of PU waste is landfilled. In this scenario, suitable and efficient routes for PU waste recycling have been searched for many years.
Lorena Ugarte   +6 more
doaj   +1 more source

A modular phosphate tether-mediated divergent strategy to complex polyols

open access: yesBeilstein Journal of Organic Chemistry, 2014
An efficient and divergent synthesis of polyol subunits utilizing a phosphate tether-mediated, one-pot, sequential RCM/CM/reduction process is reported. A modular, 3-component coupling strategy has been developed, in which, simple “order of addition” of ...
Paul R. Hanson   +4 more
doaj   +1 more source

Home - About - Disclaimer - Privacy