Changes in duodenal and nephritic Ca and P absorption in hens during different egg-laying periods
Heliyon, 2021 Ca and P metabolic disorders during the egg-laying period can reduce egg production, impair eggshell quality, and even cause bone problems in hens; however, little is known regarding the capacity of duodenal and nephritic Ca and P absorption.
Jishuang San +6 more
doaj +1 more source
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
Cosmic evolution during primordial black hole evaporation [PDF]
, 1998 Primordial black holes with a narrow mass range are regarded as a nonrelativistic fluid component with an equation of state for dust. The impact of the black hole evaporation on the dynamics of the early universe is studied by resorting to a two-fluid ...
Pavón, Diego, Zimdahl, Winfried
core +2 more sources
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
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
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
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
Influence of particle size and structure of ZrO2 on microstructure development and dielectric constant of PbZr0.5Ti0.5O3 [PDF]
, 1973 The synthesis of PbZr0.5Ti0.5O3 ceramics from the raw materials was reinvestigated in order to find relations in the characterizations for the products in various stages of the preparation procedure. Techniques used were particle size measurements, X-ray
Burggraaf, A.J. +3 more
core +2 more sources
FEEDING OF OYSTERS IN RELATION TO TIDAL STAGES AND TO PERIODS OF LIGHT AND DARKNESS
, 1946 1. Examination of approximately 1400 oysters collected during the different tidal stages in Long Island Sound and Milford Harbor failed to show any definite period when the stomachs of these mollusks displayed absence of food.2.
V. Loosanoff, C. A. Nomejko
semanticscholar +1 more source