Results 61 to 70 of about 423 (161)
Perspective Projection of an Ellipse and an Ellipsoid for Analytical View Factor Evaluation
Heat Transfer, Volume 55, Issue 1, Page 44-55, January 2026.ABSTRACT Radiative view factors are fundamental quantities for evaluating radiative heat transfer between different surfaces. While analytical expressions of view factors have been evaluated for various types of basic geometries, including circular disks and spheres, extending these solutions to more complex geometries, such as ellipses and ellipsoids ...
Kaname Sasaki
wiley +1 more source
The Paleomineralogy of the Hadean Eon Revisited
Life, 2018 A preliminary list of plausible near-surface minerals present during Earth’s Hadean Eon (>4.0 Ga) should be expanded to include: (1) phases that might have formed by precipitation of organic crystals prior to the rise of predation by cellular ...
Shaunna M. Morrison +2 more
doaj +1 more source
Reading Research Quarterly, Volume 61, Issue 1, January/February/March 2026.The Reader–Player Interactivity Framework offers a cross‐disciplinary model to understand narrative interactivity. ABSTRACT Stories unfold across a varied landscape of mediums, including video games, tabletop games, interactive films, and traditional literary texts.
Brady L. Nash +6 more
wiley +1 more source
Seeding the Solar System with Life: Mars, Venus, Earth, Moon, Protoplanets
Open Astronomy, 2020 In the space of the entire universe, the only conclusive evidence of life, is found on Earth. Although the ultimate source of all life is unknown, many investigators believe Earth, Mars, and Venus may have been seeded with life when these planets, and ...
Joseph Rhawn G. +3 more
doaj +1 more source
Meteoritics &Planetary Science, Volume 61, Issue 1, Page 17-38, January 2026.Abstract A bright fireball was seen at 4:46 a.m. CET on November 19, 2020, over Austria, and also eye witnessed in Italy and Germany. The resulting Kindberg meteorite was the fifth well‐approved meteorite fall in Austria, and all rocks represent ordinary chondrites.
Addi Bischoff +8 more
wiley +1 more source
Pressure as a Limiting Factor for Life
Life, 2016 Facts concerning the stability and functioning of key biomolecular components suggest that cellular life should no longer be viable above a few thousand atmospheres (200–300 MPa).
Rachael Hazael +3 more
doaj +1 more source
Tellus: Series B, Chemical and Physical Meteorology, 2013 Nanometre CaO and pure carbon smoke particles were collected at 38-km altitude in the upper stratosphere in the Arctic during June 2008 using DUSTER (Dust in the Upper Stratosphere Tracking Experiment and Retrieval).
Marco Ferrari +4 more
doaj +1 more source
New insights into the evolutionary history of biological nitrogen fixation
Frontiers in Microbiology, 2013 Nitrogenase, which catalyzes the ATP-dependent reduction of dinitrogen (N2) to ammonia (NH3), accounts for roughly half of the bioavailable nitrogen supporting extant life.
Eric eBoyd, John W. Peters
doaj +1 more source
Mass Extinctions Caused by Large Bolide Impacts
Physics Today, 1987 A wealth of evidence has forced my colleagues and me to conclude that 65 million years ago a mountain-sized object hit Earth and caused the extinction of most of the then existing species, bringing a close to the Cretaceous period of geological history and opening the Tertiary period. Much of the evidence for this lies in the unusual layer of clay that
openaire +3 more sources
, 1997 We present a review of the literature on the subject of a possible collision between the Earthand a meteorite or comet. We emphasize the global effects when sufficient energy is involved.We propose several types of human actions adapted to the physico-chemical nature of thecollider bolide.
openaire +3 more sources