Results 31 to 40 of about 927,917 (298)

Re-examination of the relationship between marine virus and microbial cell abundances

open access: yesNature Microbiology, 2016
Marine viruses are critical drivers of ocean biogeochemistry, and their abundances vary spatiotemporally in the global oceans, with upper estimates exceeding 108 per ml. Over many years, a consensus has emerged that virus abundances are typically tenfold
Charles H. Wigington   +13 more
semanticscholar   +1 more source

ABUNDANCES IN THE LOCAL REGION. II. F, G, AND K DWARFS AND SUBGIANTS [PDF]

open access: yes, 2016
Parameters and abundances have been derived for 1002 stars of spectral types F, G, and K, and luminosity classes IV and V. After culling the sample for rotational velocity and effective temperature, 867 stars remain for discussion.
R. E. Luck
semanticscholar   +1 more source

A pedagogy of abundance

open access: yesRevista Española de Pedagogía, 2023
The digitalisation of content combined with a global network for delivery and an open system for sharing has seen radical changes in many industries. The economic model which has underpinned many content based industries has been based on an assumption of scarcity.
openaire   +2 more sources

Environmental DNA (eDNA) detects the invasive rusty crayfish Orconectes rusticus at low abundances

open access: yesJournal of Applied Ecology, 2016
Summary Early detection is invaluable for the cost‐effective control and eradication of invasive species, yet many traditional sampling techniques are ineffective at the low population abundances found at the onset of the invasion process.
M. Dougherty   +6 more
semanticscholar   +1 more source

CHEMTAX - a program for estimating class abundances from chemical markers: application to HPLC measurements of phytoplankton

open access: yesOceanographic Literature Review, 1996
We describe a new program for calculating algal class abundances from measurements of chlorophyll and carotenoid pigments determined by high-performance liquid chromatography (HPLC).
M. Mackey   +3 more
semanticscholar   +1 more source

Gaia FGK benchmark stars: abundances of α and iron-peak elements [PDF]

open access: yes, 2015
Context. In the current era of large spectroscopic surveys of the Milky Way, reference stars for calibrating astrophysical parameters and chemical abundances are of paramount importance. Aims.
P. Jofre   +33 more
semanticscholar   +1 more source

An abundance of heterotic vacua [PDF]

open access: yesJournal of High Energy Physics, 2008
We explicitly construct the largest dataset to date of heterotic vacua arising from stable vector bundles on Calabi-Yau threefolds. Focusing on elliptically fibered Calabi-Yau manifolds with spectral cover bundles, we show that the number of heterotic models with non-zero number of generations is finite.
Gabella, M, He, Y, Lukas, A
openaire   +4 more sources

Soil bacterial quantification approaches coupling with relative abundances reflecting the changes of taxa

open access: yesScientific Reports, 2017
Understanding the abundance change of certain bacterial taxa is quite important for the study of soil microbiology. However, the observed differences of relative abundances by high-throughput techniques may not accurately reflect those of the actual ...
Zhaojing Zhang   +10 more
semanticscholar   +1 more source

CHAOS I. DIRECT CHEMICAL ABUNDANCES FOR H II ?> REGIONS IN NGC 628 [PDF]

open access: yes, 2015
The CHemical Abundances of Spirals (CHAOS) project leverages the combined power of the Large Binocular Telescope (LBT) with the broad spectral range and sensitivity of the Multi Object Double Spectrograph (MODS) to measure “direct” abundances (based on ...
D. Berg   +5 more
semanticscholar   +1 more source

Cosmological strangeness abundance

open access: yesPhysics Letters B, 2022
We investigate the strange particle composition of the early Universe in the hadron epoch $T_h\approx 150\ge T\ge 10$\,MeV. We study strangeness yield in thermal and chemical equilibrium constrained by prescribed entropy per baryon in a charge neutral and strangeness neutral $\langle s-\bar s\rangle$ Universe.
Cheng Tao Yang, Johann Rafelski
openaire   +3 more sources

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