Results 31 to 40 of about 833,438 (302)

Enigmacursor mollyborthwickae, a neornithischian dinosaur from the Upper Jurassic Morrison Formation of the western USA

Royal Society Open Science
Although their remains have been known since the 1870s, the small, bipedal ornithischian dinosaurs from the Upper Jurassic Morrison Formation of the western USA remain poorly known. The historic type specimens are incomplete and poorly preserved and have
Susannah C. R. Maidment, Paul M. Barrett
doaj   +1 more source

Implications of "peak oil" for atmospheric CO2 and climate

, 2007
Unconstrained CO2 emission from fossil fuel burning has been the dominant cause of observed anthropogenic global warming. The amounts of "proven" and potential fossil fuel reserves are uncertain and debated.
Archer, Archer, Cox, Crutzen, Etheridge, Friedlingstein, Gruber, Hansen, Hansen, Hansen, Houghton, Houghton, House, Hubbert, Intergovernmental Panel on Climate Change (IPCC), Intergovernmental Panel on Climate Change (IPCC), Intergovernmental Panel on Climate Change (IPCC), Intergovernmental Panel on Climate Change (IPCC), James E. Hansen, Joos, Keeling, Keith, Kerr, Kerr, Lackner, Lovins, Marland, Marshall, Matthews, McCarl, Milici, National Research Council (NRC), Pushker A. Kharecha, Robock, Shine, Tilman, van der Veen, Walter, Weyant, Wigley, Wood, World Energy Council, Zimov   +42 more
core   +1 more source

Fossil pigments [PDF]

Current Biology, 2016
Johan Lindgren introduces fossil pigments.
openaire   +2 more sources

Evolution of the galaxy luminosity function in progenitors of fossil groups

, 2014
Using the semi-analytic models based on the Millennium simulation, we trace back the evolution of the luminosity function of galaxies residing in progenitors of groups classified by the magnitude gap at redshift zero. We determine the luminosity function
Dariush, A. A., Finoguenov, A., Gozaliasl, G., Jassur, D. M. Z., Khosroshahi, H. G., Molaeinajad, A.   +5 more
core   +1 more source

Sustainable bioplastics manufacturing from renewable sources

FEBS Open Bio, EarlyView.
Bioplastics are manufactured by using polymers from different bio‐based sources. These novel materials not only offer biodegradability but also possess various functional properties that make them suitable for diverse applications. Recent developments in the preparation of bioplastics are reported, highlighting the distinct properties of each type of ...
C. Valeria L. Giosafatto, Marika Avitabile, Michela Famiglietti, Talayeh Kordjazi, Marzieh Moosavi‐Nasab, Odile F. Restaino, Loredana Mariniello   +6 more
wiley   +1 more source

Jadeite from Guatemala: New Observations and Distinctions Among Lavender and Black Jade

Crystals
This study systematically investigates the mineralogical, spectral, and geochemical characteristics of Guatemalan lavender jadeite and black omphacite to elucidate their coloration mechanisms and genetic origins.
Mengxi Zhao, Bo Xu, Siyi Zhao, Yining Liu, Zitong Li   +4 more
doaj   +1 more source

Evolving coal-fired power plant carbon dioxide emission rate intensities on U.S. electricity operating systems

Journal of Modern Power Systems and Clean Energy, 2018
For many years, coal-fired power plant generation comprised the largest share of electricity in the U.S. power sector. While natural gas plants now constitute a greater portion of the total, coal is projected to remain a shrinking but significant ...
Robert Kennedy SMITH
doaj   +1 more source

Fossilized bioelectric wire – the trace fossil Trichichnus [PDF]

Biogeosciences, 2014
Abstract. The trace fossil Trichichnus is proposed as an indicator of fossil bioelectric bacterial activity at the oxic–anoxic interface zone of marine sediments. This fulfils the idea that such processes, commonly found in the modern realm, should be also present in the geological past.
Kȩdzierski, M., Uchman, A., Sawlowicz, Z., Briguglio, A.   +3 more
openaire   +6 more sources

Submergence and uplift associated with the giant 1833 Sumatran subduction earthquake: Evidence from coral microatolls [PDF]

, 1999
The giant Sumatran subduction earthquake of 1833 appears as a large emergence event in fossil coral microatolls on the reefs of Sumatra's outer-arc ridge.
Edwards, R. Lawrence, Hantoro, Wahyoe S., Sieh, Kerry, Taylor, Frederick W., Zachariasen, Judith   +4 more
core   +1 more source

Enzymatic degradation of biopolymers in amorphous and molten states: mechanisms and applications

FEBS Open Bio, EarlyView.
This review explains how polymer morphology and thermal state shape enzymatic degradation pathways, comparing amorphous and molten biopolymer structures. By integrating structure–reactivity principles with insights from thermodynamics and enzyme engineering, it highlights mechanisms that enable efficient polymer breakdown.
Anđela Pustak, Aleksandra Maršavelski
wiley   +1 more source