Results 11 to 20 of about 1,045,091 (343)
Interstellar Extinction and Elemental Abundances [PDF]
, 2020 Elements in the interstellar medium (ISM) exist in the form of gas or dust. The interstellar extinction and elemental abundances provide crucial constraints on the composition, size and quantity of interstellar dust. Most of the extinction modeling efforts have assumed the total abundances (both in gas and in dust) of the dust-forming elements---known ...
arxiv +1 more source
, 2021 This chapter defines what abundance is in ecology and neoclassical economics. It also gives an overview of key literature and developments on the research of abundance.
openaire +2 more sources
Nature Reviews Physics, 2019 Invited News&Views piece for Nature Reviews Physics. Read-only edited version available through https://rdcu.be/bo6gh (v2: minor improvements and reference added)
Étienne Lantagne-Hurtubise +1 more
openaire +3 more sources
Ecosphere, 2020 Understanding drivers of antagonistic interactions across temporal and spatial scales is important for predicting community structure. In particular, studies examining spatial variation in ecological networks are critical for anticipating community ...
Anne M. McLeod +2 more
doaj +1 more source
Biogeography and predictors of wildlife killed on roads at peninsular Florida State Parks
Ecology and Evolution, 2021 Wildlife‐vehicle collisions (WVCs) are a major source of wildlife mortality and should affect regional wildlife diversity and abundance, yet most WVC studies are locally scaled.
David G. Jenkins +14 more
doaj +1 more source
Chemical Abundances in our Galaxy and Other Galaxies Derived from H II Regions [PDF]
Astrophys.Space Sci. 277 (2001) 147-156, 2000 We discuss the accuracy of the abundance determinations of H II regions in our Galaxy and other galaxies. We focus on the main observational constraints derived from abundance determinations that have implications for models of galactic chemical evolution: a) the helium to hydrogen abundance ratio, He/H; b) the oxygen to hydrogen abundance ratio, O/H ...
arxiv +1 more source
Surface abundances of ON stars [PDF]
Astronomy & Astrophysics, 2015 Massive stars burn hydrogen through the CNO cycle during most of their evolution. When mixing is efficient, or when mass transfer in binary systems happens, chemically processed material is observed at the surface of O and B stars. ON stars show stronger lines of nitrogen than morphologically normal counterparts.
Sergio Simón-Díaz +8 more
openaire +6 more sources
On Generalised Abundance, II [PDF]
Peking Mathematical Journal, 2019 The goal of this paper is to make a striking connection between several central conjectures in algebraic geometry: the Nonvanishing Conjecture, the Abundance Conjecture and the Semiampleness Conjecture for nef line bundles on K -trivial varieties.
Thomas Peternell, Vladimir Lazić
openaire +5 more sources
Identifikasi dan Kelimpahan Lalat Buah Bactrocera pada Berbagai Buah Terserang
Biosaintifika: Journal of Biology & Biology Education, 2014 Penelitian bertujuan mengidentifikasi spesies dan kelimpahan Bactrocera yang menyerang berbagai buah di Kecamtan Demak dan Dempet Kabupaten Demak. Penelitian menggunakan metode purposive sampling.
Dyah Rini Indriyanti +2 more
doaj +1 more source
An assessment of the niche centroid hypothesis: Pteropus lylei (Chiroptera)
Ecosphere, 2020 Recent ecological theories propose that species reach their highest abundance and genetic diversity in the center of their ecological niche and decline toward the edges.
Aingorn Chaiyes +8 more
doaj +1 more source