Results 81 to 90 of about 189,094 (301)

Detailed study of SNR G306.3-0.9 using XMM-Newton and Chandra observations [PDF]

open access: yes, 2016
We used combined data from XMM-Newton and Chandra observatories to study the X-ray morphology of SNR G306.3-0.9. A spatially-resolved spectral analysis was used to obtain physical and geometrical parameters of different regions of the remnant.
Combi, J. A.   +5 more
core   +4 more sources

Economía circular: un camino hacia un Quito más sostenible

open access: yesInnova Research Journal, 2018
El presente artículo muestra la importancia de la Economía Circular en la actualidad y como esta se debe implementar en las empresas de la ciudad de Quito para construir un cambio radical en nuestro sistema económico y en nuestro medioambiente.
Flavio Roberto Arroyo Morocho   +2 more
doaj   +1 more source

LES-based Study of the Roughness Effects on the Wake of a Circular Cylinder from Subcritical to Transcritical Reynolds Numbers [PDF]

open access: yes, 2017
This paper investigates the effects of surface roughness on the flow past a circular cylinder at subcritical to transcritical Reynolds numbers. Large eddy simulations of the flow for sand grain roughness of size k/D = 0.02 are performed (D is the ...
A Ekmekci   +56 more
core   +5 more sources

Economía circular en México: casos de éxito y desafíos frente al COVID-19

open access: yesRevista Científica Profundidad Construyendo Futuro
El presente trabajo de investigación tuvo como objetivo el análisis del desarrollo de la economía circular en México durante el COVID-19, esto al comprender que la experiencia vivida colocó en el centro de atención la necesidad de reconfigurar los ...
César René Gómez - García
doaj   +1 more source

Effects of intermittent exposure to hypobaria and cold on the microarchitecture and morphofunctional profile of rat gastrocnemius muscle

open access: yesThe Anatomical Record, EarlyView.
Abstract Intermittent hypobaric hypoxia (IHH) enhances oxygen transport, muscle metabolism, and cardiovascular health; however, the combined effects of hypobaria and cold are less well understood. Exposure to these stressful environmental factors, even intermittently, can affect skeletal muscle due to its plasticity, thereby altering its metabolic and ...
Garoa Santocildes   +3 more
wiley   +1 more source

LOGÍSTICA REVERSA E ECONOMIA CIRCULAR

open access: yesRevista Economia Política do Desenvolvimento, 2023
As políticas públicas são instrumentos capazes de gerar mudanças no sistema político e social, inclusive podem auxiliar na implementação da Logística Reversa (LR) e da Economia Circular (EC).
Jorge Alfredo Cerqueira Streit   +1 more
doaj  

La economía circular: un cambio de sistema productivo y comercial [PDF]

open access: yes, 2019
La Economía Circular es la gran apuesta de la Unión Europea, acogida con fuerza por España, como alternativa viable al modelo lineal de producción y consumo vigente en las sociedades actuales.
Hijosa Galindo, Cristina
core  

A CMOS 0.18μm 64×64 single photon image sensor with in-pixel 11b time-to-digital converter [PDF]

open access: yes, 2014
The design and characterization of a CMOS 64×64 single-photon avalanche-diode (SPAD) array with in-pixel 11b time-to-digital converter (TDC) is presented. It is targeted for time-resolved imaging, in particular 3D imaging.
Carmona Galán, Ricardo   +2 more
core   +1 more source

Long‐term trends in parasite diversity and infection levels: approaches and patterns

open access: yesBiological Reviews, EarlyView.
ABSTRACT Parasites exist in every ecosystem, affecting nearly all organisms and playing a complex role in human societies. On the one hand, they contribute substantially to biodiversity and support ecosystem stability by performing essential ecological functions.
Cyril Hammoud   +8 more
wiley   +1 more source

Safety assessment of the process Cajas y Palets en una Economia Circular (CAPEC), used to recycle high-density polyethylene and polypropylene crates for use as food contact materials. [PDF]

open access: yesEFSA J, 2022
EFSA Panel on Food Contact Materials   +24 more
europepmc   +1 more source

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