Results 111 to 120 of about 12,802,787 (318)

Age determination methods in harbour seals (Phoca vitulina) with a review of methods applicable to carnivores

open access: yesNAMMCO Scientific Publications, 2010
The development of age determination methods in marine mammals is reviewed with particular reference to the use of teeth Growth Layer Groups (GLGs) formed in the dentine and cement of carnivores.
Christina Lockyer   +4 more
doaj   +1 more source

On the Age at Leaving Home in the Early Nineteenth Century: Evidence from the Lives of New England Manufacturers [PDF]

open access: yes
Much recent research has focussed on some decisions that affected family composition in the past, including the determination of the age of marriage and the timing of fertility.
David W. Galenson
core  

HST/NICMOS Observations of Massive Stellar Clusters Near the Galactic Center

open access: yes, 1999
We report Hubble Space Telescope (HST) Near-infrared Camera and Multi-object Spectrometer (NICMOS) observations of the Arches and Quintuplet clusters, two extraordinary young clusters near the Galactic Center.
Donald F. Figer   +7 more
core   +2 more sources

Genetic determinants of proteomic aging

open access: yesnpj Aging
Abstract Changes in the proteome and its dysregulation have long been known to be a hallmark of aging. We derived a proteomic aging trait using data on 1459 plasma proteins from 44,435 UK Biobank individuals measured using an antibody-based assay.
Alexander Mörseburg   +5 more
openaire   +3 more sources

Dental maturity of Saudi children: Role of ethnicity in age determination

open access: yesImaging Science in Dentistry, 2013
Purpose Demirjian's dental maturity scores and curves have been widely used for human age determination. Several authors have reported considerable differences between the true and estimated age based on the Demirjian curves, which have been accounted ...
Z. Baghdadi
semanticscholar   +1 more source

Organoids in pediatric cancer research

open access: yesFEBS Letters, EarlyView.
Organoid technology has revolutionized cancer research, yet its application in pediatric oncology remains limited. Recent advances have enabled the development of pediatric tumor organoids, offering new insights into disease biology, treatment response, and interactions with the tumor microenvironment.
Carla Ríos Arceo, Jarno Drost
wiley   +1 more source

The AGB stars of the intermediate-age LMC cluster NGC 1846 Variability and age determination

open access: yes, 2007
Aims: To investigate variability and to model the pulsational behaviour of AGB variables in the intermediate-age LMC cluster NGC 1846. Methods: Our own photometric monitoring has been combined with data from the MACHO archive to detect 22 variables ...
Lebzelter, T., Wood, P. R.
core   +1 more source

Reciprocal control of viral infection and phosphoinositide dynamics

open access: yesFEBS Letters, EarlyView.
Phosphoinositides, although scarce, regulate key cellular processes, including membrane dynamics and signaling. Viruses exploit these lipids to support their entry, replication, assembly, and egress. The central role of phosphoinositides in infection highlights phosphoinositide metabolism as a promising antiviral target.
Marie Déborah Bancilhon, Bruno Mesmin
wiley   +1 more source

Earthtime [PDF]

open access: yes, 2010
Quantification of geological time represents one of the fundamental challenges for earth scientists as it permits the determination of rates of change, integration of disparate geological datasets and assessment of coincidence (or lack thereof) so ...
Bowring, Samuel, Condon, Daniel
core  

Spatiotemporal and quantitative analyses of phosphoinositides – fluorescent probe—and mass spectrometry‐based approaches

open access: yesFEBS Letters, EarlyView.
Fluorescent probes allow dynamic visualization of phosphoinositides in living cells (left), whereas mass spectrometry provides high‐sensitivity, isomer‐resolved quantitation (right). Their synergistic use captures complementary aspects of lipid signaling. This review illustrates how these approaches reveal the spatiotemporal regulation and quantitative
Hiroaki Kajiho   +3 more
wiley   +1 more source

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