Results 181 to 190 of about 4,006,812 (300)

Arcs and geodesics in metric spaces [PDF]

open access: yesTransactions of the American Mathematical Society, 1945
openaire   +2 more sources

Appraisal of Six Natural Mica Reference Materials for In Situ Rb‐Sr Geochronology

open access: yesGeostandards and Geoanalytical Research, EarlyView.
Key Points Evaluated six natural mica reference materials for in situ LA‐ICP‐MS/MS Rb‐Sr geochronology using geochemical, microstructural and isotopic characterisation. Identified robust primary reference materials: Mount Dromedary biotite (99.37 Ma) and Mica‐Fe biotite (307.75 Ma). La Posta biotite and Högsbo muscovite are suitable secondary reference
Hugo K.H. Olierook   +38 more
wiley   +1 more source

A Non‐Parametric Framework for Correlation Functions on Product Metric Spaces

open access: yesInternational Statistical Review, EarlyView.
Summary We propose a non‐parametric framework for analysing data defined over products of metric spaces, a versatile class encountered in various fields. This framework accommodates non‐stationarity and seasonality and is applicable to both local and global domains, such as the Earth's surface, as well as domains evolving over linear time or time ...
Pier Giovanni Bissiri   +3 more
wiley   +1 more source

Erythrocyte ‘Feierzeit’ reaction: Novel filamentous and vesicular response to n‐butyl acetate

open access: yesJournal of Microscopy, EarlyView.
Abstract Human erythrocytes (red blood cells; RBCs) undergo spontaneous disassembly after several hours of exposure to n‐butyl acetate (nBA). Images of the morphological changes were captured in time‐lapse sequences using differential interference contrast (DIC) light microscopy.
Philip W. Kuchel
wiley   +1 more source

Herd Effects in United States Internal Migration: Complementary Emulation Mechanisms Across Distance and Educational Attainment

open access: yesJournal of Regional Science, EarlyView.
ABSTRACT Internal migration in the United States is highly structured, concentrating into persistent corridors that link specific origins and destinations. While earlier studies have focused on social networks and push‐pull factors, less is known about how individuals emulate migration choices across regions. This study decomposes herd effects into two
Shih‐Keng Yen, Ernesto F. L. Amaral
wiley   +1 more source

Complex space forms and geodesics on their geodesic spheres

open access: yesComplex space forms and geodesics on their geodesic spheres
論文(Article)
openaire   +1 more source

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