Results 121 to 130 of about 225,630 (329)

Trace element bioaccumulation in the plumage of common blackbirds (Turdus merula Linnaeus, 1758) from Agigea, Romania

Present Environment and Sustainable Development
The purpose of this research was to establish the baseline concentrations of thirteen trace elements (Cd, Co, Cr, Cu, Ni, Pb, Fe, Mg, Na, K, Sr, Ca, and Zn) in feathers of the common blackbird Turdus merula (n=9) at the Natura 2000 site “Marine Dunes ...
Diana IACOB, Emanuela PADURARU, Emanuel-Ștefan BALTAG, Vicențiu-Robert GABOR, Roxana JIJIE, Carmen GACHE, Iuliana Gabriela BREABĂN, Viorica RARINCA, Gabriel PLAVAN, Mircea NICOARĂ   +9 more
doaj   +1 more source

An exploration of isotopic variability in feathers and claws of Lesser Kestrel Falco naumanni chicks from southern Sicily

Avocetta, 2016
Stable isotopes are nowadays commonly used in the study of many key features of avian ecology. However, the adequate choice of what isotopic ratio to consider and what tissues to sample for assessing specific questions may be tricky.
Michelangelo Morganti, Alessandro Franzoi, Luana Bontempo, Maurizio Sarà   +3 more
doaj   +1 more source

Paleontology: Outrunning Time [PDF]

, 2017
In this paper, I discuss several temporal aspects of paleontology from a philosophical perspective. I begin by presenting the general problem of “taming” deep time to make it comprehensible at a human scale, starting with the ...
Huss, John
core   +1 more source

Scour‐Conditioned Seismic Fragility Analysis of Monopile‐Supported Offshore Wind Turbines

Earthquake Engineering &Structural Dynamics, EarlyView.
ABSTRACT Monopile‐supported offshore wind turbines (MS‐OWTs) are increasingly deployed in seismic coastal regions, where they face compound risks from earthquake loading and seabed scour. While past studies have addressed these hazards separately, seismic fragility under evolving scour conditions remains insufficiently understood. This study introduces
Francisco Pinto, Rodrigo Astroza, Felipe Vicencio, Raffaele De Risi   +3 more
wiley   +1 more source

Hairs, feathers and fibres in Mesolithic contexts – recommendations for field archaeologists

Acta Academiae Artium Vilnensis
Microarchaeological research has drawn attention to new microscopic categories of finds such as charcoal and ash, archaeobotanical remains, and non-pollen palynomorphs, including textile fibres.
Tuija Kirkinen, Kristiina Mannermaa
doaj   +1 more source

A guide to nestling development and aging in altricial passerines [PDF]

, 2007
Nestling growth and development studies have been a topic of interest for a greater part of the last century (Sutton 1935, Walkinshaw 1948) and continue to be of interest today. This is not surprising since studies on nestling growth can provide a wealth
Gardali, Thomas, Geupel, Geoffrey R., Gouse, Paula J., Jones, Stephanie L., Jongsomjit, Dennis   +4 more
core   +1 more source

Notable Impact of Paleotectonic Stress on Gold Mineralisation in the West Qinling Orogen

Geological Journal, EarlyView.
By applying fuzzy clustering and multiple inverse methods, we systematically processed the data of vein and fault slip in this ore deposit to reveal the transition of orogenic geological environment and paleotectonic stress field. Our research results show two different stress states: the northwest–southeast extensional stress field and the northeast ...
Hongyan Wang, Aibing Chen, Jian Yang, Yuan Zhang   +3 more
wiley   +1 more source

UTILIZATION OF α-KERATIN OF CHICKEN FEATHERS AS ADSORBEN OF LEAD ION

Alchemy, 2016
Research of Pb ions adsorption with chicken feathers adsorbent has been conducted. This research aims to determine adsorption properties of activated chicken feathers and the chicken feathers that were not activatedby Na2S for Pb ions.
Rais Nur Latifah, Roro Ernia, Edi Pramono   +2 more
doaj   +1 more source

Melanosomes or Microbes: Testing an Alternative Hypothesis for the Origin of Microbodies in Fossil Feathers

Scientific Reports, 2014
Microbodies associated with fossil feathers, originally attributed to microbial biofilm, have been reinterpreted as melanosomes: pigment-containing, eukaryotic organelles.
Alison E. Moyer, Wenxia Zheng, Elizabeth A. Johnson, Matthew C. Lamanna, Daqing Li, K. Lacovara, M. Schweitzer   +6 more
semanticscholar   +1 more source

Conflict between cultural development and wildlife conservation: A potential threat to Reeves's pheasant (Syrmaticus reevesii)

Conservation Letters
Reeves's pheasant feathers are used to make headgears for the Chinese opera—Xiqu; however, this posed a considerable threat to the bird's population before it was banned from hunting/trade.
Xinming Li, Bochi Wang, Jing Zhang, Geoffrey W. H. Davison, Nan Wang   +4 more
doaj   +1 more source