Results 111 to 120 of about 11,607 (279)

Dating of hydrocarbons with Re-Os isotopes: Experimental investigation of the behavior of Re-Os in petroleum

open access: yes, 2013
Le géochronomètre Re-Os a fait ses preuves dans son application aux huiles et bitumes pétroliers. Cependant, l’application de ce système sur les fluides pétroliers souffre d’un manque de compréhension de la géochimie pétrolière de Re et Os, des mécanismes de remise à zéro du géochronomètre et par conséquent des évènements réellement datés.
openaire   +1 more source

Origin of the Xulaojiugou Pb–Zn Deposit, Heilongjiang Province, NE China: Constraints from Molybdenite Re–Os Isotopic Dating, Trace Elements, and Isotopic Compositions of Sulfides

open access: yesMinerals
The Xulaojiugou Pb–Zn deposit, situated in the eastern Xing’an-Mongolia Orogenic Belt (XMOB), represents a medium-scale Pb–Zn deposit in central Heilongjiang Province, NE China. The mineralization occurs mainly near the contact zone of porphyritic biotite granite, medium-grained monzogranite, and marble in the Early Cambrian Qianshan Formation ...
Gan Liu   +3 more
openaire   +1 more source

In‐vitro puncture experiment using alligator teeth tracks the formation of dental microwear and its association with hardness of the diet

open access: yesThe Anatomical Record, EarlyView.
Abstract With the development of dental microwear texture analysis (DMTA), there has been an increasing application of DMTA for dietary estimation in extant and fossil reptiles, including dinosaurs. While numerous feeding experiments exist for herbivorous mammals, knowledge remains limited for carnivorous reptiles. This study aimed to qualitatively and
K. Usami, M. O. Kubo
wiley   +1 more source

A CHECK-LIST OF FOSSIL CHONDRICHTHYES FROM BRIELAS (LANGHIAN, PORTUGAL) [PDF]

open access: yes, 2018
Located in a slope of the Costa de Caparica motorway, in the peninsula of Setúbal, West Portugal, the outcrop of Brielas stand out as one of the best Miocene sections of the Lower Tagus Basin to collect a great diversity of fossil Chondrichthyes, which ...
Antunes, Miguel   +2 more
core  

Ontogenetic changes and sexual dimorphism in the cranium and mandible of the Atlantic walrus (Odobenus rosmarus rosmarus L.)

open access: yesThe Anatomical Record, EarlyView.
Abstract Walruses have been an important subsistence and cultural resource for humans and have been exploited for millennia across their distribution. This exploitation has contributed to severe declines in several populations and local extirpations.
Katrien Dierickx   +6 more
wiley   +1 more source

Age, growth, and spawning season of red bream (Beryx decadactylus) off the southeastern United States [PDF]

open access: yes, 2011
Red bream (Beryx decadactylus) is a commercially important deep-sea benthopelagic fish with a circumglobal distribution on insular and continental slopes and seamounts.
Friess, Claudia, Sedberry, George R.
core  

Origin, evolution and biogeographic dynamics of the European rabbit (Oryctolagus cuniculus) in Southwestern Europe

open access: yesThe Anatomical Record, EarlyView.
Abstract The Pleistocene is a key period for understanding the evolutionary history and palaeobiogeography of the European rabbit (Oryctolagus cuniculus). The species was first documented in southeastern Iberia at the beginning of the Middle Pleistocene and appears to have rapidly spread throughout Southwestern Europe, where it was found in numerous ...
Maxime Pelletier
wiley   +1 more source

Relationship between NAFLD and coronary artery disease: A Mendelian randomization study

open access: yesHepatology, EarlyView., 2022
Abstract Background and Aims There is an ongoing debate on whether NAFLD is an active contributor or an innocent bystander in the pathogenesis of coronary artery disease (CAD). The aim of the present study was to assess the causal relationship between NAFLD and CAD.
Zhewen Ren   +4 more
wiley   +1 more source

T. rex cognition was T. rex‐like—A critical outlook on diverging views of the neurocognitive evolution in dinosaurs

open access: yesThe Anatomical Record, EarlyView.
Abstract A recent debate has emerged between Caspar et al. (2024) and Herculano‐Houzel (2023) on inferring extinct dinosaur cognition by estimating brain neuron counts. While thought‐provoking, the discussion largely overlooks the function of cognition, as well as partly neglects the difficulties involved in estimating neuron numbers, which according ...
Thomas Rejsenhus Jensen   +7 more
wiley   +1 more source

Serum bile acids as a prognostic biomarker in biliary atresia following Kasai portoenterostomy

open access: yesHepatology, EarlyView., 2022
Serum bile acid levels predict outcomes in patients with biliary atresia who achieve normalized bilirubin levels after Kasai portoenterostomy. Abstract Background and Aims In biliary atresia, serum bilirubin is commonly used to predict outcomes after Kasai portoenterostomy (KP).
Sanjiv Harpavat   +22 more
wiley   +1 more source

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