Results 31 to 40 of about 1,045,091 (343)
An abundance of heterotic vacua [PDF]
Journal 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
Performance PhilosophyThis 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
NAMMCO Scientific Publications, 2014 Surveys to estimate walrus abundance at terrestrial haulout sites in the Penny Strait-Lancaster Sound (PS-LS) and West Jones Sound (WJS) stocks were conducted in 1977 and 1998-2009. The Minimum Counted Population (MCP) was similar in 1977 (565) to recent
Robert EA Stewart +4 more
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Weakly Abundant Semigroups and variants [PDF]
arXiv, 2021 A weakly U abundant is a class of semigroups characterized using some generalized Green' relations. In this paper we discuss the variants of weakly U - abundant semigroups and it is shown that the idempotent variants of these semigroups are again weakly U abundant.
arxiv
The abundance pattern of the lambda Bootis stars [PDF]
Astronomy and Astrophysics, v.381, p.959-970 (2002), 2001 Within a project to investigate the properties of lambda Bootis stars, we report on their abundance pattern. High resolution spectra have been obtained for a total of twelve candidate lambda Bootis stars, four of them being contained in spectroscopic binary systems, and detailed abundance analyses have been performed.
arxiv +1 more source
The oxygen abundance distribution in M101 [PDF]
, 2001 The well-observed spiral galaxy M101 was considered. The radial distributions of oxygen abundances determined in three different ways (with the classic Te - method, with the R23 - method, and with the P -- method) were compared. It was found that the parameters (the central oxygen abundance and the gradient) of the radial O/H(P) abundance distribution ...
arxiv +1 more source
The Oxygen Abundance of HE 1327-2326 [PDF]
Astrophys.J.638:L17-L20,2006, 2005 From a newly obtained VLT/UVES spectrum we have determined the oxygen abundance of HE 1327-2326, the most iron-poor star known to date. UV-OH lines yield a 1D LTE abundance of [O/Fe]_OH = 3.7 (subgiant case) and [O/Fe]_OH = 3.4 (dwarf case). Using a correction of -1.0 dex to account for 3D effects on OH line formation, the abundances are lowered to [O ...
arxiv +1 more source
Geochemical characteristics of rare earth elements in late Palaeozoic coals from North China
Frontiers in Earth ScienceIntroduction: China is a large country of REE resources and production, supplying more than 90% of the world’s rare earth consumption market, China’s traditional REE resources, although rich, but reserves are also declining, in recent years, scholars ...
Long Wen +4 more
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Status of harbour seals (Phoca vitulina) in mainland Norway
NAMMCO Scientific Publications, 2010 Harbour seals were counted along the entire Norwegian coast at known moulting haulout sites in the period mid-August to early September 2003-2006. In 2003-2005, almost all known moulting areas from Finnmark to Vestfold counties were covered by aerial ...
Kjell Tormod Nilssen +5 more
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Atmosphere, 2017 During the third China Arctic Research Expedition (July–September 2008), size-resolved measurements of bacteria-containing particles (BCPs) in the marine boundary layer (MBL) air were conducted during a cruise through the East China Sea, the Yellow Sea ...
Ming Li +4 more
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