Results 21 to 30 of about 1,716,518 (288)
On the orbital period of the cataclysmic variable RZ Leonis [PDF]
, 2001 In this research note we present a time-resolved study of the Balmer emission lines of RZ Leo. From the analysis of the radial velocities we find an orbital period of 0.07651(26) d.
C. Tappert ., +6 more
core +2 more sources
Age, Period, and Cohort Effects on Literacy Skills across Life Stages [PDF]
Innovation in Aging, 2021 Abstract Literacy skills are essential adult competencies for economic, social, political and cultural participation, which are linked to higher quality of life. Literacy skills are known to be lower for older age groups. However, relatively little is known about cohort and period effects, which provide clues to the sociohistorical ...
Yamashita, Takashi +2 more
openaire +1 more source
The effect of meteorological conditions on the course of development stages and yield of winter wheat in southern Poland [PDF]
Journal of Water and Land DevelopmentYield and the course of crop vegetation are the result of the interaction between the level of cultivation technology and the course of meteorological conditions, which are a variable production factor.
Barbara Skowera +5 more
doaj +1 more source
Evidence of hydrological control of Sr behavior in stream water (Strengbach catchment, Vosges mountains, France) [PDF]
, 2002 Strontium and particularly 87Sr/86Sr ratios in stream water have often been used to calculate weathering rates in catchments. Nevertheless, in the literature, discharge variation effects on the geochemical behavior of Sr are often omitted or considered ...
Amiotte-Suchet +48 more
core +2 more sources
Julius-Kühn-Archiv, 2018 In this study, ozone gas at different concentrations (16.7, 33.3 and 66.6 mg/L) were exposed to all biological stages (egg, larva, pupa and adult) placed at top and bottom of the hazelnut for various exposure periods (2, 4 and 6 hours).
Akbay, Haşim +4 more
doaj +1 more source
Variability of vendace (Coregonus albula L.) gonads in the annual cycle, in three lakes of Mazurian Lakeland [PDF]
Acta Ichthyologica et Piscatoria, 1985 In the lakes under study vendace was characterised by different duration of particular stages of male and female gonad development, and different periods of spawning.
M. Długosz, E. Worniałło
doaj +3 more sources
Petroleum Exploration and Development, 2014 By taken the Sinian Dengying Formation in Northern Guizhou as an example, based on the data from homogenization temperature, salinity and density of fluid inclusions, and combined with the restoration of burial history and thermal history, this paper ...
Ping YANG +7 more
doaj +1 more source
Semina: Ciências Agrárias, 2014 In the present work, with whole plant silage corn at different stages of maturity, aimed to evaluate the mathematical models Exponential, France, Gompertz and Logistic to study the kinetics of gas production in vitro incubations for 24 and 48 hours.
João Pedro Velho +5 more
doaj +1 more source
Growth performance of hatchery-reared mahseer (Tor soro) based on different cultural periods [PDF]
E3S Web of Conferences, 2023 This study was carried out to evaluate growth performance, length-weight relationship, and condition factors of mahseer based on different culture stages. Fish larvae were produced by artificial spawning and reared in indoor tanks.
Arnenda Gussasta L. +8 more
doaj +1 more source
Rotation in NGC 2264: a study based on CoRoT photometric observations [PDF]
, 2013 Rotation is one of the key stellar parameters which undergo substantial evolution during the stellar lifetime, in particular during the early stages.
Affer, Laura +4 more
core +2 more sources