Results 11 to 20 of about 26,369 (217)

Birth size and age at menarche: a twin perspective [PDF]

open access: yesHuman Reproduction, 2013
Do birthweight (BW) and co-twin sex influence the age at menarche in twins?BW, but not co-twin sex, was associated with age at menarche in twins. However, BW was not associated with age at menarche after controlling for genetics and shared rearing environment.Nutritional deprivation during critical developmental periods can trigger long-term effects on
Sørensen, K   +5 more
openaire   +3 more sources

Study of hippocampal size and age

open access: yesItalian Journal of Anatomy and Embryology, 2022
Objective (or background): The hippocampus is a thoroughly studied structure of the temporal lobe. In contrast to our current knowledge of hippocampal anatomy, neurophysiology and pathophysiology, scientific literature on the relationship between the hippocampal size and age is limited.
Luiz Gabriel Dias Duarte Machado   +7 more
openaire   +1 more source

Establishment exits in Germany: the role of size and age [PDF]

open access: yesSmall Business Economics, 2012
Using comprehensive data for West Germany, this paper investigates the determinants of establishment exit. We find that between 1975 and 2006 the average exit rate has risen considerably. In order to test various “liabilities” of establishment survival identified in the literature, we analyze the impact of establishment size and put a special focus on ...
Fackler, Daniel   +2 more
openaire   +11 more sources

Lymph node metastasis in young and middle-aged papillary thyroid carcinoma patients: a SEER-based cohort study

open access: yesBMC Cancer, 2020
Background Lymph node metastasis (LNM) occurs frequently in young papillary thyroid carcinoma (PTC) patients, though the mortality rates are low. We aimed to analyze the relationship between age at diagnosis and LNM in PTC at a population level to ...
Yuanchao Liu   +7 more
doaj   +1 more source

Prenatal exposure to consumer product chemical mixtures and size for gestational age at delivery

open access: yesEnvironmental Health, 2021
Background While fetal growth is a tightly regulated process, it is sensitive to environmental exposures that occur during pregnancy. Many commonly used consumer products contain chemicals that can disturb processes underlying fetal growth.
P. A. Bommarito   +6 more
doaj   +1 more source

Advanced maternal age and nicotine consumption during pregnancy

open access: yesHuman Biology and Public Health, 2021
Background Nicotine consumption during pregnancy and advanced maternal age are well known independent risk factors for poor pregnancy outcome and therefore serious public health problems.
Robin Koger   +4 more
doaj   +1 more source

Model Selection Applied to Growth of the Stingray Urotrygon chilensis (Günther, 1872) in the Southeastern Mexican Pacific

open access: yesFishes
The present study analyzed the growth pattern of the stingray Urotrygon chilensis caught as bycatch by the shrimp fishery in the southeastern Mexican Pacific.
Ana Bricia Guzmán-Castellanos   +3 more
doaj   +1 more source

Platelet size and age determine platelet function independently [PDF]

open access: yesBlood, 1984
Abstract This study was undertaken to examine the interaction of platelet size and age in determining in vitro platelet function. Baboon megakaryocytes were labeled in vivo by the injection of 75Se- methionine. Blood was collected when the label was predominantly associated with younger platelets (day 2) and with older platelets (day 9).
C B, Thompson   +4 more
openaire   +3 more sources

On the relationship between firm size, resources, age at entry and internationalization: the case of Slovenian SMEs

open access: yesJournal of Business Economics and Management, 2014
Export marketing and international business literature support the view that firm size–a reflection of number of employees, and sales–is positively related to export intensity and is a distinguishing factor between internationalized and non ...
Mitja Ruzzier, Maja Konecnik Ruzzier
doaj   +1 more source

Size-Selected Ag Nanoparticles with Five-Fold Symmetry [PDF]

open access: yesNanoscale Research Letters, 2009
Abstract Silver nanoparticles were synthesized using the inert gas aggregation technique. We found the optimal experimental conditions to synthesize nanoparticles at different sizes: 1.3 ± 0.2, 1.7 ± 0.3, 2.5 ± 0.4, 3.7 ± 0.4, 4.5 ± 0.9, and 5.5 ± 0.3 nm.
Miguel Angel, Garcia Pinilla   +3 more
openaire   +4 more sources

Home - About - Disclaimer - Privacy