Results 1 to 10 of about 423,405 (371)

The 'spectral index-flux density relation' for extragalactic radio sources selected at metre and decametre wavelengths [PDF]

open access: yesA&A 675, L3 (2023), 2023
We use the recent releases of sensitive VLA/LOFAR large-area surveys at 340 MHz and 54 MHz, in conjunction with the 1.4 GHz NVSS, to accurately determine the `spectral index - flux density relation' ($\alpha$ - S) for extragalactic radio sources selected at metre and decametre wavelengths, the latter for the first time. This newly determined $\alpha$ -
arxiv   +1 more source

Effects of temperature on the survival and development of the early life stages of northern pike (Esox lucius)

open access: yesKnowledge and Management of Aquatic Ecosystems, 2022
In the context of global change, the aim of this study was to investigate the effects of temperature on the survival rate and various variables (development time, morphometric measures, energy values) for both embryos and post-hatch stages until first ...
Réalis-Doyelle Emilie   +3 more
doaj   +1 more source

Duration of chilling phase, but not thermal condition, influence the gonad maturation of male and female domesticated pikeperch (Sander lucioperca)

open access: yesAquaculture, Fish and Fisheries, 2021
This study was designed to determine the influence of the thermal level and duration of chilling period on the initiation and progress of gonadogenesis and gametogenesis under controlled conditions in pikeperch (Sander lucioperca).
Sylvain Milla   +5 more
doaj   +1 more source

Camarones, camaroneros y escasez hídrica: desafíos para la sostenibilidad pesquera de Cryphiops caementarius en la cuenca semiárida del río Choapa, Chile

open access: yesMarine and Fishery Sciences, 2022
Cryphiops caementarius es un camarón anfídromo nativo de relevancia ecológica y pesquera en cuencas hidrográficas del norte de Chile. Esta especie representa un componente importante de la identidad cultural de las comunidades de camaroneros que ...
Carlos Velásquez Gallardo   +4 more
doaj   +1 more source

Charge Asymmetries for D, D_s and Lambda_c Production in Sigma- - Nucleus Interactions at 340 GeV/c [PDF]

open access: yesEur.Phys.J.C8:593-601,1999, 1998
CERN experiment WA89 has studied charmed particles produced by a Sigma^- beam at 340 GeV/c on nuclear targets. Production of particles which have light quarks in common with the beam is compared to production of those which do not. Considerable production asymmetries between D^- and D^p, D_s^ and D_s^+ and Lambda_c and Antilambda_c are observed.
arxiv   +1 more source

Regeneration of Haploid Plantlet through Anther Culture of Chrysanthemum (Dendranthema grandiflorum)

open access: yesNotulae Botanicae Horti Agrobotanici Cluj-Napoca, 2014
To observe the possibility of producing haploid plants of Chrysanthemum, anthers of three Korean cultivars ‘Yes Morning’, ‘Hi-Maya’, and pot cultivar ‘Peace Pink’ were cultured.
Rayhanul Kabir KHANDAKAR MD   +11 more
doaj   +1 more source

Efficacy of technological intervention on production potential of diversified farming system in Panchmahals district, Gujarat

open access: yesThe Indian Journal of Agricultural Sciences, 2014
The present study the efficacy of technological intervention on production potential of diversified farming system was conducted at Godhra, Kalol, Halol and Lunawara Talukas of Panchmahals district of Central Gujarat during the year 2010-12.
B S KHADDA   +5 more
doaj   +1 more source

q-Calculus Revisited [PDF]

open access: yesarXiv, 2021
In this study, a new representation is obtained for \emph{q}-calculus, as proposed by Borges [Phyica A 340 (2004) 95], and a new dual \emph{q}-integral is suggested.
arxiv  

Interplay between magnetism and sodium vacancy ordering in NaxCoO2 [PDF]

open access: yesPhys. Rev. B 94, 1404026(R) (2016), 2016
Using a combination of low-temperature nanocalorimetry and x-ray diffraction we identify three temperature regimes characterized by distinct Na ordering patterns (low temperature up to 290 K, intermediate 290-340 K, and high above 340 K). Through freezing-in of these patterns we establish the two key roles sodium intercalation plays in the formation of
arxiv   +1 more source

Effect of spacing and nitrogen levels on performance of hybrid napier in semiarid ecosystem of Gujarat

open access: yesThe Indian Journal of Agricultural Sciences, 2016
The present study was undertaken during 2011-12 at Krishi Vigyan Kendra, Panchmahal to find out the effect of spacing and nitrogen levels on performance of hybrid napier in semi-arid ecosystem of Gujarat.
B S KHADDA   +4 more
doaj   +1 more source

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