Results 121 to 130 of about 10,988 (297)

Sterkfontein at 75: review of paleoenvironments, fauna, dating and archaeology from the hominin site of Sterkfontein (Gauteng Province, South Africa).

open access: yes, 2011
Seventy-five years after Robert Broom’s discovery of the first adult Australopithecus in 1936, the Sterkfontein Caves (Gauteng Province, South Africa) remains one of the richest and most informative fossil hominin sites in the world.
Reynolds, Sally C.   +3 more
core  

Gristhorpe Man: an Early Bronze Age log-coffin burial scientifically defined

open access: yes, 2010
A log-coffin excavated in the early nineteenth century proved to be well enough preserved in the early twenty-first century for the full armoury of modern scientific investigation to give its occupants and contents new identity, new origins and a new ...
Janaway, Robert C.   +44 more
core   +1 more source

Enhancing Biogenic Formic Acid Production in the Modified OxFA Process by Acetonitrile Addition

open access: yesAdvanced Science, EarlyView.
In this study, the beneficial effect of using acetonitrile as a co‐solvent in the modified OxFA process is shown, outperforming methanol, demonstrating improved reaction kinetics combined with high selectivity for the HPA‐2 (H5PV2Mo10O40) catalyzed oxidation of xylose to FA.
Jan‐Dominik H. Krueger   +7 more
wiley   +1 more source

El último medio siglo en el estudio de los vertebrados fósiles

open access: yesPublicación Electrónica de la Asociación Paleontológica Argentina, 2015
El último medio siglo en el estudio de los vertebrados ...
Eduardo P. Tonni
doaj  

George F. Sternberg Unearthing a Portheus Fossil

open access: yes, 2021
This black and white photograph features a Portheus fossil at an excavation site. George Sternberg brushes debris off the fossil. A man sits off to the right side of the photograph, and a pile of tools lies next to him. Supplies are visible at the bottom

core  

Lewis‐Acid Engineering with Neodymium Promoters as Synergistic Nd‐Ni Dual Sites for Enhanced Urea Oxidation

open access: yesAdvanced Science, EarlyView.
The integration of rare‐metal neodymium centers to engineer Lewis acid sites with nickel centers is proposed as highly efficient UOR catalysts. ABSTRACT The sluggish kinetics of the urea oxidation reaction (UOR) are strongly associated with the high energy barriers required for the C‐N cleavage and N‐N coupling steps.
Mingfan Li   +8 more
wiley   +1 more source

Invertebrados del Cenozoico de la Argentina

open access: yesPublicación Electrónica de la Asociación Paleontológica Argentina, 2015
Invertebrados del Cenozoico de la ...
Claudia J. Del Rio
doaj  

LIBRO DE RESÚMENES RCAPA 2019

open access: yesPublicación Electrónica de la Asociación Paleontológica Argentina, 2020
Libro de resúmenes de la Reunión de Comunicaciones de la Asociación Paleontológica Argentina, realizada en la ciudad de La Plata durante los días 27-29 de Noviembre de ...
Comité Editor
doaj  

072-02: Man at Work Evacuating a Fossil

open access: yes, 1916
This black and white photograph features a view of the outcrop where the ripple marks were found. The outcrop has eroded over time and created step-like layers.
Sternberg, George Fryer, 1883-1969
core  

Fully Textured Monolithic Sb2S3/Silicon Tandem for Unbiased and Stable Solar‐Driven Water Splitting Paired with Iodide Oxidation Reaction

open access: yesAdvanced Science, EarlyView.
Monolithically integrated Sb2S3 on industry‐compatible textured silicon for tandem photoelectrochemical hydrogen evolution coupled with iodide oxidation. ABSTRACT Solar‐driven photoelectrochemical (PEC) production of chemical fuels such as hydrogen is a viable solution to address climate neutrality objectives.
Jihong Min   +13 more
wiley   +1 more source

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