Results 11 to 20 of about 27,357,740 (266)

La externalización del trabajo agrario y las empresas de servicios a la agricultura

open access: yesEconomía Agraria y Recursos Naturales, 2011
En este artículo se analiza el proceso de externalización de las labores agrarias y el consiguiente desarrollo de una agricultura terciarizada.
Alicia Langreo Navarro
doaj   +1 more source

Multifunctional state primary power standard in the frequency range from 1 to 2500 Hz, GET 153-2019

open access: yesСтандартные образцы, 2020
This paper describes measurement techniques, structure, technical characteristics and results of the uncertainty analysis for primary multifunction power standard in the frequency range from 1 Hz to 2500 Hz.
G. B. Gubler   +3 more
doaj   +1 more source

Deuterium Toward WD1634-573: Results from the Far Ultraviolet Spectroscopic Explorer (FUSE) Mission [PDF]

open access: yes, 2001
We use Far Ultraviolet Spectrocopic Explorer (FUSE) observations to study interstellar absorption along the line of sight to the white dwarf WD1634-573 (d=37.1+/-2.6 pc). Combining our measurement of D I with a measurement of H I from Extreme Ultraviolet
A. Vidal‐Madjar   +16 more
core   +3 more sources

Dbar D* andD*bar D* molecules [PDF]

open access: yesJournal of Physics: Conference Series, 2005
The discovery of the X(3872) in the 3πJ/ψ mode is compelling evidence for its molecular nature. A successful prediction of this decay mode and other predictions concerning D* and D** molecules are reviewed.
openaire   +1 more source

Roots of Ehrhart polynomials of Gorenstein Fano polytopes [PDF]

open access: yes, 2010
Given arbitrary integers $k$ and $d$ with $0 \leq 2k \leq d$, we construct a Gorenstein Fano polytope $\Pc \subset \RR^d$ of dimension $d$ such that (i) its Ehrhart polynomial $i(\Pc, n)$ possesses $d$ distinct roots; (ii) $i(\Pc, n)$ possesses exactly ...
Hibi, Takayuki   +2 more
core   +1 more source

El I+D+ i y el Observatorio Tecnológico de Defensa

open access: yesArbor: Ciencia, Pensamiento y Cultura, 2014
Este artículo ofrece una visión sobre cómo el mundo de la defensa se adapta a la evolución existente en su entorno, tanto a la evolución de las tecnologías como a las necesidades y oportunidades de aplicación de estas a los intereses de defensa.
José María Riola Rodríguez
doaj   +1 more source

Agitación electromagnética en la colada continua de acero

open access: yesRevista de Metalurgia, 1995
La instalación de agitadores electromagnéticos en las máquinas de colada continua del acero ha mejorado notablemente la calidad interna del producto colado. En este trabajo se describen los ensayos efectuados con bobinas agitadoras situadas en diferentes
G. Álvarez de Toledo   +2 more
doaj   +1 more source

Open questions in the use of new technologies in psychological assessment [PDF]

open access: yesPapeles del Psicólogo, 2022
The application of new technologies to the field of psychological assessment can greatly enhance the ability of professionals to carry out assessments more accurately and comprehensively and to streamline the processes of collecting and analyzing ...
Pablo Santamaría   +1 more
doaj   +1 more source

Application of the Method of Coprecipitation of Salts to Obtain Zinc Orthostannate [PDF]

open access: yesMATEC Web of Conferences, 2021
The effect of the temperature treatment of compounds obtained by the method of co-precipitation of zinc and tin (IV) salts on the synthesis of highly dispersed zinc orthostannate in the temperature range 800 – 1300 °C was studied.
Antonov Dmitry A.   +2 more
doaj   +1 more source

More about exactly massless quarks on the lattice [PDF]

open access: yes, 1998
In a previous publication [hep-lat/9707022] I showed that the fermion determinant for strictly massless quarks can be written on the lattice as $\det D$, where $D$ is a certain finite square matrix explicitly constructed from the lattice gauge fields ...
Balaban   +3 more
core   +3 more sources

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