Results 21 to 30 of about 2,931,284 (276)

Planetary Nebulae: Abundances and Abundance Gradients [PDF]

open access: yes, 2000
In this work, a review is given of some recent results and problems involved in the determination of chemical abundances of galactic planetary nebulae, particularly regarding disk and bulge objects.
openaire   +2 more sources

The abundance of moduli, modulini and gravitinos produced by the vacuum fluctuation [PDF]

open access: yes, 1999
Moduli, modulini and the gravitino have gravitational-strength interactions, and thermal collisions after reheating create all of them with roughly the same abundance.
Casas   +12 more
core   +2 more sources

Seasonal variation of the main zooplanktonic groups of the protected natural area estuary El Salado, Jalisco, Mexico

open access: yesRevista Bio Ciencias, 2015
Estuarine systems are the most important aquatic natural resources of the nation from various perspectives; fisheries use them mainly through studies that allow the detection and evaluation of the areas of concentration of adults on reproduction ...
Navarro-Rodríguez, M.C.   +2 more
doaj   +1 more source

Copepod community structure in Bahia de Banderas during the 2008-2009 La Niña and their transition to the 2009-2010 El Niño

open access: yesRevista Bio Ciencias, 2016
In order to investigate the taxonomic copepod community structure and its relations with the climate conditions in the Pacific Ocean, bimonthly samples were made between February 2009 and April 2010.
Jiménez-Pérez, L.C.
doaj   +1 more source

Herschel observations of deuterated water towards Sgr B2(M) [PDF]

open access: yes, 2010
Observations of HDO are an important complement for studies of water, because they give strong constraints on the formation processes -- grain surfaces versus energetic process in the gas phase, e.g. in shocks.
A. Belloche   +77 more
core   +7 more sources

The Abundance of Interstellar Nitrogen [PDF]

open access: yes, 1997
Using the HST Goddard High Resolution Spectrograph (GHRS), we have obtained high S/N echelle observations of the weak interstellar N I 1160, 1161 A absorption doublet toward the stars Gamma Cas, Lambda Ori, Iota Ori, Kappa Ori, Delta Sco, and Kappa Sco ...
Comeron F.   +12 more
core   +2 more sources

Grief as Radically Social

open access: yesPerformance Philosophy
This essay emerges from the ongoing work of Inviting Abundance dedicated to facilitating and wit(h)nessing the paradigm shifts taking place in the field of griefwork.
Will Daddario, Joanne Zerdy
doaj   +1 more source

Resistance and Resilience of Nine Plant Species to Drought in Inner Mongolia Temperate Grasslands of Northern China

open access: yesApplied Sciences, 2022
Drought has been approved to affect the process of terrestrial ecosystems from different organizational levels, including individual, community, and ecosystem levels; however, which traits play the dominant role in the resistance of plant to drought is ...
Yuan Miao   +9 more
doaj   +1 more source

Estimating wolf abundance from cameras

open access: yesEcosphere, 2022
Monitoring the abundance of rare carnivores is a daunting task for wildlife biologists. Many carnivore populations persist at relatively low densities, public interest is high, and the need for population estimates is great.
David E. Ausband   +5 more
doaj   +1 more source

Effects of Different Rotation Combinations of Cabbage, Kidney Bean and Maize on Soil Fungal Communities and Soil Nutrients

open access: yesAgronomy, 2023
The continuous cropping of cabbage or kidney bean results in a decrease in yield by influencing the soil environment. To decrease the damage caused by continuous cropping, ten treatments of cabbage–maize–cabbage (CMC), kidney bean–maize–cabbage (BMC ...
Tianle Wang, Xiaojuan Wang, Ling Xie
doaj   +1 more source

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