نتایج جستجو برای: reproductive wast age
تعداد نتایج: 835272 فیلتر نتایج به سال:
this study investigated the potential role of age in inductive and deductive grammar learning among iranian foreign language learners. the experimental population consisted of our randomly selected samples including two groups of children (with age of exposure to english within 8-13), and two groups of adults (with age of exposure to english within 11-13). thus, the comparison was between ch...
Only a few parasites were recovered from each animal, most of which being 225 males from a kudu and 5 males from a grey duik.er. As these nematodes could not be assigned to any of the known species of Cooperia, they are here described as Cooperia acutispi.culum n. sp. because of the sharply pointed spicules. The type host selected wasT. strepsiceros, since too few parasttes for a detailed descr...
BACKGROUND Adolescents face a range of health problems but many barriers block their access to health services, and in particular to sexual and reproductive health services. The objective of this study was to assess the health needs of adolescents in Ecuador and to draw lessons from the ways the country has responded to their need for differentiated care. METHODS We conducted a literature rev...
In many iteroparous species individual fitness components, such as reproductive output, first increase with age and then decline during late-life. However, individuals differ greatly in reproductive lifespan, but reproductive declines may only occur in the period just before their death as a result of an age-independent decline in physiological condition. To fully understand reproductive senesc...
Benign ovarian cysts in reproductive-age women undergoing assisted reproductive technology treatment
Evolutionary theory predicts that differential reproductive effort and rate of reproductive senescence will evolve under different rates of external mortality. We examine the evolutionary divergence of age-specific reproduction in two life-history ecotypes of the western terrestrial garter snake, Thamnophis elegans. We test for the signature of reproductive senescence (decreasing fecundity with...
OBJECTIVES AND STUDY DESIGN The aim of this study was two-fold: to investigate the association of Assisted Reproductive Technology (ART) and small newborn size, using standardized measures; and to examine within strata of fresh and cryopreserved embryos transfer, whether this association is influenced by parental infertility diagnoses. We used a population-based retrospective cohort from Michig...
There is increasing interest in the need to address the ethical dilemmas related to the engagement of adolescents in sexual and reproductive health (SRH) research. Research projects, including those that address issues related to STIs and HIV, adverse pregnancy outcomes, violence, and mental health, must be designed and implemented to address the needs of adolescents. Decisions on when an indiv...
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