Results 11 to 20 of about 1,464,639 (343)
PLoS ONE, 2011 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 ...
Joshua R Goldstein
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Blood lead levels and timing of male sexual maturity: A longitudinal study of Russian boys
Environment International, 2019 Background: Higher blood lead levels (BLLs) have been linked to neurologic deficits and impaired growth, but few studies have evaluated their association with timing of sexual maturity or pubertal progression in boys. Methods: In a longitudinal cohort of
Paige L. Williams +6 more
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Comparing sex hormones levels in Acipenser persicus at the onset of Autumnal migration [PDF]
Majallah-i ̒Ilmī-i Shīlāt-i Īrān, 2006 Levels of two main steroid hormones in gonads, 17-B Stradiol (E2) and testosterone (T) were compared in males and females of Persian sturgeon at the start of autumnal migration to spawning rivers.
R. Malazadeh; A. Halajian; R. Kazemi; M. Bahmani; A. Hoshmand
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Current trend of sexual maturity, teeth eruption, and bone fusion in the present female population, relative to documented age and development of prediction model for age of females [PDF]
Journal of Family Medicine and Primary CareBackground: Understanding sexual maturity and bone fusion is crucial in forensic investigations and legal contexts. This study investigates the contemporary trend of sexual maturity and bone fusion in females, comparing the observed age-related ...
Anamika Nath +3 more
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Reproductive Biology, Sperm storage, and Sexual Maturity of Thamnodynastes strigatus (Serpentes: Dipsadidae) [PDF]
Anais da Academia Brasileira de Ciências, 2022 Life history strategies determine and influence many aspects of species fitness. In this study, we describe the reproductive biology - reproductive cycle, sperm storage, and sexual maturity - of Thamnodynastes strigatus in South Brazil.
LUIZA LOEBENS +3 more
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Animals, 2022 Using data for the body size and shell shape of Algerian Testudo graeca, we assessed how proximate causes shaped the observed variation in the morphology of adults.
Manel Tiar-Saadi +3 more
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Psikopedagogia: Jurnal Bimbingan dan Konseling, 2012 This research aims to find out some factors related to the sexual maturity, such as the social anxiety and emotional maturity on the adolescents of the SMP in Kabupaten Bantul, Yogyakarta.
Endang Sri Lestari
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Motricidade, 2020 This study examined the moderators of sex, maturity sexual stage, and age in the intervention of high intensity and moderate-intensity exercises on changes in cardiorespiratory fitness (CRF) and body composition. Forty-eight children (aged 9,48±0.5 years)
Tomas Rodolfo Reyes Amigo +1 more
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Biology and Ecology of Melanoplus Borealis (Orthoptera: Acrididae) in Fairbanks, Alaska with Special Reference to Feeding Habits [PDF]
, 2017 Overwintered Melanoplus borealis (subspecies, borealis Fieber) eggs hatched within 10-15 days in mid-June. The nymphs molted 5 times and became adults in about 45 days in nature.
Kaufmann, Tohko
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