نتایج جستجو برای: age of maturity
تعداد نتایج: 21198966 فیلتر نتایج به سال:
............................................................................................................................ 2 Introduction ...................................................................................................................... 3 Materials and Methods ..................................................................................................... 6 Northern (...
Estimation of chronological age of an individual is one of the main challenges in forensic science. Legally to be able to treat a person as a minor or an adult, it is necessary to determine whether their age of majority (if they are older or younger than 18, in most countries). Methods for estimating age are especially important when an individual in question lacks personal documents or other m...
Length and age at maturity are important life history parameters for estimating spawning stock biomass and reproductive potential of fish stocks. Bias in estimates of size and age at maturity can arise when disparate distributions of mature and immature fish within a population are not accounted for in the analysis. Here we investigate the spatial and temporal variability in observed size and a...
This paper shows new evidence of a steady long-term decline in age of male sexual maturity since at least the mid-eighteenth century. A method for measuring the timing of male maturity is developed based on the age at which male young adult mortality accelerates. The method is applied to mortality data from Sweden, Denmark, Norway, the United Kingdom, and Italy. The secular trend toward earlier...
The eastern shovelnose ray (Aptychotrema rostrata) is a medium-sized coastal batoid endemic to the coast of Australia. It most common elasmobranch incidentally caught in Queensland east otter trawl fishery, Australia’s largest penaeid-trawl fishery. Despite this, age and growth studies on this species are lacking. present study estimated parameters age-at-maturity for A. rostrata basis sampling...
NDR1/2 kinase is essential in dendrite morphology and spine formation, which is regulated by cellular Ca2+. Lead (Pb) is a potent blocker of L-type calcium channel and our recent work showed Pb exposure impairs dendritic spine outgrowth in hippocampal neurons in rats. But the sensitivity of Pb-induced spine maturity with mixed factors (gender×age×brain regions) remains unknown. This study aimed...
To date, analyses of differences between adolescents' and adults' judgment have emphasized age differences in cognitive factors presumed to affect decision making. In contrast, this article examines research and theory on three psychosoeial aspects of maturity of judgment: responsibility, temperance, and perspective. For several psychosocial dimensions of maturity that are likely to affect judg...
In a nite-trader version of the Diamond-Dybvig (1983) model, the symmetric, ex-ante e cient allocation is implementable by a direct mechanism (i.e., each trader announces the type of his own ex-post preference) in which truthful revelation is the strictly dominant strategy for each trader. When the model is modi ed by formalizing the sequential-service constraint (cf. Wallace, 1988), the truth-...
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