Results 21 to 30 of about 1,450,801 (300)

Feasibility Study on the Application of Biodegradable Plastic Film in Farmland Soil in Southern Xinjiang, China—Planting Tomatoes as an Example

open access: yesToxics, 2023
In recent years, polybutylene adipate-co-terephthalate (PBAT) mulch film has become one of the most commonly used biodegradable mulch films in agriculture in an attempt to combat plastic film pollution. However, its degradation characteristics and impact
Rehemanjiang Wufuer   +4 more
doaj   +1 more source

A novel profluorescent dinitroxide for imaging polypropylene degradation [PDF]

open access: yes, 2008
Free-radical processes underpin the thermo-oxidative degradation of polyolefins. Thus, to extend the lifetime of these polymers, stabilizers are generally added during processing to scavenge the free radicals formed as the polymer degrades.
Fairfull-Smith, Kathryn E.   +4 more
core   +2 more sources

Suppression of Psychological Needs Among Beginning Teachers: A Self-Determination Theory Perspective on the Induction Process in Bedouin Schools

open access: yesFrontiers in Psychology, 2021
The study focuses on the emotional-motivational experiences of Bedouin-Arab beginning teachers during the induction period, from the perspective of Self-Determination Theory. A phenomenological study was employed.
Haya Kaplan
doaj   +1 more source

FROM THE EXPERIENCE OF SUPPORTING YOUNG TEACHERS IN THE EU COUNTRIES

open access: yesОбразование и наука, 2016
The purpose of the article is a description of the basic points of the uniform policy adopted in the European countries (EU members) targeted at the support of beginning teachers.
Elina N. Yakovleva, Irina Y. Krasilova
doaj   +1 more source

Determination of the induction period of soybean oil - Correlation between the Rancimat and various analytical tests

open access: yesGrasas y Aceites, 1992
The objective of this research work was to follow the evolution of peroxide, anisidine, totox. iodine and acid values and refractive index during the oxidation of soybean oil using the Rancimat method.
A. M. O. Rauen-Miguel   +2 more
doaj   +1 more source

Optimization of Pumpkin Oil Recovery by Using Aqueous Enzymatic Extraction and Comparison of the Quality of the Obtained Oil with the Quality of Cold-Pressed Oil

open access: yesFood Technology and Biotechnology, 2016
The study was carried out to optimize pumpkin oil recovery in the process of aqueous extraction preceded by enzymatic maceration of seeds, as well as to compare the quality of the obtained oil to the quality of cold-pressed pumpkin seed oil.
Iwona Konopka   +3 more
doaj   +1 more source

Analysis of the payback period of a modernized pump unit with induction electric motors of advanced energy efficiency classes

open access: yesElectrical engineering & Electromechanics, 2021
Aim. The comparative analysis of energy consumption, electricity costs during lifetime cycle and payback period of a pump unit with 90 kW 2-pole induction motors, belonging to various energy efficiency classes, feeding directly from power grid.
V.V. Goman   +5 more
doaj   +1 more source

Modeling induction period of polymer crystallization [PDF]

open access: yesPolymer, 2017
We study the possibility of the spinodal decomposition in the induction period of the polymer crystallization. This phenomenon was first reported in an X-ray scattering experiment, and has still been controversial due to various experiments and theories that support or deny the phenomenon.
Hiroshi Yokota, Toshihiro Kawakatsu
openaire   +2 more sources

Avaliação de biocombustível derivado do bio-óleo obtido por pirólise rápida de biomassa lignocelulósica como aditivo para gasolina Evaluation of biofuel derived from lignocellulosic biomass fast pyrolysis bio-oil for use as gasoline addictive

open access: yesQuímica Nova, 2010
A biofuel was prepared from acid aqueous fraction (pH = 2) of bio-oil produced by fast pyrolysis (Bioware Technology) of lignocellulosic biomass (sugar cane residue) and tested in blends (2, 5, 10 e 20% v/v) with gasoline type C (common) marketed in ...
Carmen Luisa Barbosa Guedes   +7 more
doaj   +1 more source

Crystal nucleation and cluster-growth kinetics in a model glass under shear [PDF]

open access: yes, 2010
Crystal nucleation and growth processes induced by an externally applied shear strain in a model metallic glass are studied by means of nonequilibrium molecular dynamics simulations, in a range of temperatures.
A. Dobreva   +5 more
core   +3 more sources

Home - About - Disclaimer - Privacy