Results 21 to 30 of about 72,721 (230)

Dissolution dominating calcification process in polar pteropods close to the point of aragonite undersaturation [PDF]

open access: yes, 2014
Thecosome pteropods are abundant upper-ocean zooplankton that build aragonite shells. Ocean acidification results in the lowering of aragonite saturation levels in the surface layers, and several incubation studies have shown that rates of calcification ...
AG Dickson   +57 more
core   +3 more sources

Selected prebiotics and synbiotics administered in ovo can modify innate immunity in chicken broilers

open access: yesBMC Veterinary Research, 2019
Background A previous study showed that prebiotics and synbiotics administered in ovo into the egg air cell on the 12th day of incubation enhance the growth and development of chickens.
Tadeusz Stefaniak   +7 more
doaj   +1 more source

Promoting enterprise productivity: The role of digital transformation

open access: yesBorsa Istanbul Review, 2022
This study employs textual analysis to assess enterprise digitalization. Moreover, it explores the effect of firm digital transformation (DT) on productivity using data from listed enterprises in China from 2007 to 2020. Our empirical findings point to a
Xinyi Du, Kangqi Jiang
doaj   +1 more source

Lie symmetries of the Shigesada-Kawasaki-Teramoto system [PDF]

open access: yes, 2016
The Shigesada-Kawasaki-Teramoto system, which consists of two reaction-diffusion equations with variable cross-diffusion and quadratic nonlinearities, is considered.
Cherniha, Roman   +2 more
core   +2 more sources

Effects of Allocative Inefficiency on Input Substitution in Iran\'s Manufacturing Sector [PDF]

open access: yesپژوهشهای اقتصادی, 2010
According to the neoclassical approach, input prices as a measure of resources scarcity induce firms to cost-minimizing and efficient allocation of recourses.
Hossein Sadeghi   +1 more
doaj  

¿A dónde exportan las firmas, por qué eligen ese mercado, quiénes venden más y cuántas comercian? Un análisis con firmas manufactureras localizadas en México

open access: yesEl Trimestre Económico, 2018
Antecedentes: Son escasas las investigaciones que examinan los patrones de comercio que exhiben los países alrededor del mundo, y lo son aún más para países en desarrollo.
Carlos Enrique Cardoso Vargas
doaj   +1 more source

D21-Digital-Index 2021/2022

open access: yesmerz | medien + erziehung, 2022
Der Gesellschaft fällt es nicht leicht, die Auswirkungen der Digitalisierung auf die ökologische Nachhaltigkeit und die zugrundeliegenden Wirkzusammenhänge einzuschätzen. So ein Ergebnis des D21-Digital-Index 2021/2022. Neben der Untersuchung des Digitalisierungsgrads der Bevölkerung erfasst die Studie in diesem Jahr auch systematisch die Perspektive ...
openaire   +1 more source

CP Violation Makes Left-Right Symmetric Extensions With Non-Hermitian Mass Matrices Appear Unnatural [PDF]

open access: yes, 2010
Following a similar recent analysis for CP violation in the electroweak sector of the standard model, we estimate the naturalness of a magnitude of CP violation (measured by the Jarlskog invariant J) close to the observed value in extensions of the ...
Gielen, Steffen
core   +3 more sources

Differences in the Gut Microbiota Establishment and Metabolome Characteristics Between Low- and Normal-Birth-Weight Piglets During Early-Life

open access: yesFrontiers in Microbiology, 2018
Low-birth-weight (LBW) piglets are at a high-risk for postnatal growth failure, mortality, and metabolic disorders later in life. Early-life microbial exposure is a potentially effective intervention strategy for modulating the health and metabolism of ...
Na Li   +12 more
doaj   +1 more source

Sleeping under the Ocean: Despite Total Isolation, Nuclear Submariners Maintain Their Sleep and Wake Patterns throughout Their Under Sea Mission. [PDF]

open access: yesPLoS ONE, 2015
To assess the effects of isolation, inadequate exposure to light and specific shift work on the subjective and objective measurements of sleep and alertness of submariners.A strictly controlled randomized crossover study with the polysomnography recorded
Marion Trousselard   +7 more
doaj   +1 more source

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