New Evidence of an Ancient Martian Ocean From the Global Distribution of Valley Networks

2018 ◽  
Vol 123 (8) ◽  
pp. 2138-2150 ◽  
Author(s):  
Ngai-Ham Chan ◽  
J. Taylor Perron ◽  
Jerry X. Mitrovica ◽  
Natalya A. Gomez
Keyword(s):  
Global Distribution ◽  
Valley Networks ◽  
Martian Ocean ◽  
New Evidence

scholarly journals The Elephant Curve of Global Inequality and Growth

2018 ◽  
Vol 108 ◽  
pp. 103-108 ◽  
Author(s):  
Facundo Alvaredo ◽  
Lucas Chancel ◽  
Thomas Piketty ◽  
Emmanuel Saez ◽  
Gabriel Zucman
Keyword(s):  
Growth Rates ◽  
High Growth ◽  
Fast Growth ◽  
Global Distribution ◽  
Global Inequality ◽  
China And India ◽  
The World ◽  
New Evidence ◽  
Distribution Of Income

We present new evidence on global inequality and growth since 1980 using the World and Wealth Income Database. We plot the curve of cumulated growth from 1980 to 2016 by percentile of the global distribution of income per adult. This curve has an elephant shape due to high growth rates at the median (fast growth in China and India), modest growth rates above the median, and explosive growth rates at the top. We project the evolution of global inequality between now and 2050 combining projected macro growth rates and within country inequality evolution based on past trends.

The global distribution of depositional rivers on early Mars

Geology ◽  
2020 ◽  
Author(s):  
J.L. Dickson ◽  
M.P. Lamb ◽  
R.M.E. Williams ◽  
A.T. Hayden ◽  
W.W. Fischer
Keyword(s):  
Sedimentary Basins ◽  
Global Distribution ◽  
Network Activity ◽  
Transport Systems ◽  
River Channels ◽  
Sedimentary Deposits ◽  
Source To Sink ◽  
Early Mars ◽  
Valley Networks ◽  
Valley Network

Sedimentary basins are the archives of ancient environmental conditions on planetary surfaces, and on Mars they may contain the best record of surface water and habitable conditions. While erosional valley networks have been mapped, the global distribution of fluvial sedimentary deposits on Mars has been unknown. Here we generated an eight-trillion-pixel global map of Mars using data from the NASA Context Camera (CTX), aboard the Mars Reconnaissance Orbiter spacecraft, to perform the first systematic global survey of fluvial ridges—exhumed ancient deposits that have the planform shape of river channels or channel belts, but stand in positive relief due to preferential erosion of neighboring terrain. We used large fluvial ridges (>70 m width) as a conservative proxy for the occurrence of depositional rivers or river-influenced depositional areas. Results showed that fluvial ridges are as much as 100 km long, common across the southern highlands, occur primarily in networks within intercrater plains, and are not confined to impact basins. Ridges were dominantly found in Noachian through Late Hesperian units, consistent with cessation of valley network activity, and occurred downstream from valley networks, indicating regional source-to-sink transport systems. These depositional areas mark a globally distributed class of sedimentary deposits that contain a rich archive of Mars history, including fluvial activity on early Mars.

Systematic effects in observed parallaxes

1978 ◽  
Vol 48 ◽  
pp. 31-35
Author(s):  
R. B. Hanson
Keyword(s):  
Error Estimates ◽  
Zero Point ◽  
Absolute Zero ◽  
Apparent Magnitude ◽  
Coherent System ◽  
Preliminary Results ◽  
General Catalogue ◽  
Systematic Effects ◽  
New Evidence ◽  
Right Ascension

Several outstanding problems affecting the existing parallaxes should be resolved to form a coherent system for the new General Catalogue proposed by van Altena, as well as to improve luminosity calibrations and other parallax applications. Lutz has reviewed several of these problems, such as: (A) systematic differences between observatories, (B) external error estimates, (C) the absolute zero point, and (D) systematic observational effects (in right ascension, declination, apparent magnitude, etc.). Here we explore the use of cluster and spectroscopic parallaxes, and the distributions of observed parallaxes, to bring new evidence to bear on these classic problems. Several preliminary results have been obtained.

MERLIN Finds New Evidence of Ranolazine Safety

2007 ◽  
Vol 40 (9) ◽  
pp. 36
Author(s):  
BRUCE JANCIN
Keyword(s):  
New Evidence

Vaccination for travellers – new evidence and recommendations

2001 ◽  
Vol 58 (6) ◽  
pp. 362-366 ◽  
Author(s):  
Matius P. Stürchler ◽  
R. P. Steffen
Keyword(s):  
Hepatitis B ◽  
Hepatitis A ◽  
New Evidence

Impfungen sind einfache und effektive Maßnahmen zur Verhinderung von Reisekrankheiten. Compliance-Probleme sind gering, da alle Impfungen noch vor Abreise verabreicht werden und bei manchen Impfungen nur eine Dosis für den zuverlässigen Schutz nötig ist. Für jeden Reisenden sind die Hepatitis A- und die Diphtherie-Tetanus-Impfung empfohlen, für Asien und Afrika auch die Polioimpfung. Bei Reisen >30 Tagen, jüngeren Personen und Reisenden mit Risikoverhalten sollte immer auch eine Hepatitis B-Impfung, eventuell als Kombination mit Hepatitis A in Betracht gezogen werden. Je nach Reisestil, -destination und -dauer können auch weitere Impfungen wie z.B. die Typhus-, Tollwut-, Zeckenenzephalitis-, Grippe-, Masern-Mumps-Röteln-, Gelbfieber-, Meningokokkenmeningitis- und die Japanische Enzephalitis-Impfung in Frage kommen. Mehrere Impfungen können gleichzeitig verabreicht werden – eine Staffelung ist nicht nötig. i BAG Supplementum VI, Stand Juli 2000 «Impfungen für Auslandreisende»; http://www.admin.ch/bag/infekt/prev/reisemed/index.htm; Safetravel http://www.safetravel.ch; Tropimed

Strategic control of a time criterion in naming: New evidence and effects

1997 ◽  
Author(s):  
Stephen J. Lupker ◽  
Tamsen E. Taylor ◽  
Penny M. Pexman
Keyword(s):  
Strategic Control ◽  
Time Criterion ◽  
New Evidence
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