Results 21 to 30 of about 4,716,117 (295)

Use of Butanol in Diesel Engines as a Motor Fuel

open access: yesМеханика машин, механизмов и материалов, 2021
The article presents the results of computer modeling and experimental research of the effect of butanol content in the fuel on the specific power, fuel-economic and environmental performance of 4ЧН 11/12.5 (4ChN 11/12.5) diesel engine at various cycle ...
Heorhi M. Kukharonak   +2 more
doaj   +1 more source

Jeffreys priors for mixture estimation: properties and alternatives [PDF]

open access: yes, 2017
While Jeffreys priors usually are well-defined for the parameters of mixtures of distributions, they are not available in closed form. Furthermore, they often are improper priors.
Grazian, Clara, Robert, Christian P.
core   +2 more sources

Integrated environmental risk assessment of rare earth elements mixture on aquatic ecosystems

open access: yesFrontiers in Environmental Science, 2022
Rare Earth elements (REE) have become essential in strategical sectors such as high- and green-technologies. Their increasing use in human activities worldwide leads to anthropogenic REE releases detectable in all compartments of the environment ...
Nicolas Lachaux   +7 more
doaj   +1 more source

Changes in spring wheat (Triticum aestivum ssp. vulgare L.) and persian clover (Trifolium resupinatum L.) biomass under the influence of plant competition and density

open access: yesActa Agrobotanica, 2014
The influence of sowing method and plant density on the biomass of spring wheat and Persian clover was evaluated. In a pot experiment conducted in three series during the years 2010–2012, plants were cultivated as mixed and pure crop at higher ...
Maria Aniela, Monika Myśliwiec
doaj   +1 more source

Testing for Homogeneity in Mixture Models [PDF]

open access: yes, 2016
Statistical models of unobserved heterogeneity are typically formalized as mixtures of simple parametric models and interest naturally focuses on testing for homogeneity versus general mixture alternatives.
Gu, Jiaying   +2 more
core   +1 more source

Identification of the Combined Rheology of Mixtures of Epoxy Resins with Different Initial Curing States

open access: yesApplied Rheology, 2013
A commercial epoxy resin system was tested under several different mixing conditions with viscometer and rheometer apparatuses. In each test, two portions of the same resin, prepared at different times, were mixed and their joint behavior was analysed ...
Faria Hugo   +2 more
doaj   +1 more source

Nutritional characteristics of ancient Tuscan varieties of Triticum aestivum L.

open access: yesItalian Journal of Agronomy, 2016
Bread wheat (Triticum aestivum L.) is an important cereal in human consumption. In recent years, there has been a growing interest in ancient wheat varieties.
Lisetta Ghiselli   +6 more
doaj   +1 more source

Behavioral response of Aedes aegypti (Diptera: Culicidae) to essential oils of Cymbopogon nardus (L.) Eucalyptus camaldulensis (Dehnh) and their blend in Y-maze olfactometer

open access: yesFrontiers in Tropical Diseases
BackgroundAedes aegypti vectors several important arboviruses including dengue and yellow fever. This vector mosquito is controlled mainly by using synthetic insecticides and repellents.
Dimitri Wendgida Wangrawa   +14 more
doaj   +1 more source

Du symposion à l’adyton de Delphes. L’harmonie du mélange et ses instruments

open access: yesPallas, 2011
In the banqueting hall where the drinking party takes place, the lyre and the aulos are associated with the crater and the gestures that make it function.
Philippe Monbrun
doaj   +1 more source

Simple‐mix: Thermodynamics modeling in a Gama‐type Stirling engine with a working fluid mixture

open access: yesEngineering Reports, 2023
The Stirling engine is an external combustion engine that can be utilized in electricity generation. Existing literature indicates that air is less expensive than helium as the working fluid but has the low power and efficiency.
Bahram Vaziri   +3 more
doaj   +1 more source

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