Results 21 to 30 of about 806,520 (286)
New evidence on taxes and portfolio choice [PDF]
, 2009 Identifying the effect of differential taxation on portfolio allocation requires exogenous variation in marginal tax rates. Marginal tax rates vary with income, but income surely affects portfolio choice directly. In systems of individual taxation – like
Alan, S +3 more
core +2 more sources
Marine Drugs, 2013 Several studies report temporal, geographical, and intra-individual variation in sponge metabolite yields. However, the internal and/or external factors that regulate the metabolite production remain poorly understood.
Bernard Banaigs +5 more
doaj +1 more source
Lack of associations between female hormone levels and visuospatial working memory, divided attention and cognitive bias across two consecutive menstrual cycles [PDF]
, 2017 Background: Interpretation of observational studies on associations between prefrontal cognitive functioning and hormone levels across the female menstrual cycle is complicated due to small sample sizes and poor replicability. Methods: This observational
Egli, Marcel +12 more
core +4 more sources
Short Communication: Intra-Individual Microwear Variation: Deciduous versus Permanent Dentition
Dental Anthropology, 2010 This study compares microwear patterns on deciduous and permanent dentition within individuals. Number of features, total number of pits, mean pit breadth and mean scratch breadth are compared in 11 individuals aged 6-12 years.
Tammy R. Gamza
doaj +1 more source
Linguistics Vanguard, 2021 AbstractThis paper explores intra-individual variation as a manifestation of language-internal multilingualism in the Central-Bavarian Austrian context. Based on speech data from children and adults in different contexts, we discuss different methods of measuring and analyzing inter-situational variation along the dialect and standard language spectrum.
Kaiser, Irmtraud, Ender, Andrea
openaire +2 more sources
MetaboVariation: Exploring Individual Variation in Metabolite Levels
Metabolites, 2023 To date, most metabolomics biomarker research has focused on identifying disease biomarkers. However, there is a need for biomarkers of early metabolic dysfunction to identify individuals who would benefit from lifestyle interventions.
Shubbham Gupta +2 more
doaj +1 more source
Intra-line and inter-individual variation in Sardinian arrepentina
Open Linguistics, 2019 S’arrepentina is a genre of extemporary poetry performed by semi-professional poets, both at informal gatherings and in public contests in south-central Sardinia.
Bravi Paolo, Proto Teresa
doaj +1 more source
Variation in venom composition in the Australian funnel-web spiders Hadronyche valida
Toxicon: X, 2020 Mygalomorph venom properties and active components, which have importance in medicine, agronomy, venomics, ecology and evolution, have been widely studied, but only a small fraction have been characterised.
Linda Hernández Duran +2 more
doaj +1 more source
Analysis of the sperm head protein profiles in fertile men: consistency across time in the levels of expression of heat shock proteins and peroxiredoxins. [PDF]
PLoS ONE, 2013 We investigated the identity and quantitative variations of proteins extracted from human sperm heads using a label-free Gel-MS approach. Sperm samples were obtained from three men with high sperm counts at three different time points.
Elsa Kichine +4 more
doaj +1 more source
BMC Medicine, 2020 Background Major depressive disorder (MDD) shows large heterogeneity of symptoms between patients, but within patients, particular symptom clusters may show similar trajectories.
K. Hebbrecht +6 more
doaj +1 more source