5,395 research outputs found

    Ecosystem services of biodiversity in organic grasslands

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    The use of multi-species mixtures in herbage production can add value in terms of improved conditions for pollinating insects, better resource utilization, carbon sequestration, yield stability, animal health and product quality. This is the hypothesis of a new project - EcoServe - where the goal is to design grasslands, which increase both the nature value and provide an economically sustainable food production

    Search for associated Higgs boson production at D√ė

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    Using 1 fb-1 of data the DO collaboration has searched for the production of a Higgs boson in association with a W or a Z boson. The W or Z boson is required to decay leptonically and whereas the Higgs boson decays into a bb pair. Searches in these final states are the most sensitive for a Higgs boson with a mass less than about 130 GeV/c2. No evidence for Higgs boson production has been observed and 95% C.L. upper limits on the Higgs boson production cross section are derived.http://deepblue.lib.umich.edu/bitstream/2027.42/64209/1/jpconf8_110_042029.pd

    Biodiversitet i gr√¶smarken - en fordel for b√•de natur og f√łdevareproduktion

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    Anvendelse af mange-arts-blandinger i gr√¶smarker til produktion kan √łge nyttev√¶rdien, f.eks. i form af forbedrede vilk√•r for best√łvende insekter, √łget ressourceudnyttelse, kulstoflagring, udbyttestabilitet, husdyrsundhed og produktkvalitet. Det er hypotesen i et nyt projekt, hvor m√•let er at designe gr√¶smarker, som b√•de √łger naturv√¶rdien og giver en √łkonomisk b√¶redygtig f√łdevareproduktion

    Mangfoldighed i den √łkologiske gr√¶smark

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    Anvendelse af mange-arts-blandinger i gr√¶smarker til produktion kan √łge nyttev√¶rdien i form af forbedrede vilk√•r for best√łvende insekter, √łget ressourceudnyttelse, kulstoflagring, udbyttestabilitet, husdyrsundhed og produktkvalitet. Det er hypotesen i et nyt projekt ‚Äď EcoServe - hvor m√•let er at designe gr√¶smarker, som b√•de √łger naturv√¶rdien og giver en √łkonomisk b√¶redygtig f√łdevareproduktion

    Sex Difference in Serious Infections Not Only COVID-19

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    Microwave Spectroscopy

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    Contains reports on two research projects.Joint Services Electronics Programs (U.S. Army, U. S. Navy, and U. S. Air Force) under Contract DAAB07-71-C-030

    Magnetic Anisotropy of Isolated Cobalt Nanoplatelets

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    Motivated in part by experiments performed by M.H. Pan et al. (nanoletters, v.5, p 83, 2005), we have undertaken a theoretical study of the the magnetic properties of two-monolayer thick Co nanoplatelets with an equilateral triangular shape. The analysis is carried out using a microscopic Slater-Koster tight-binding model with atomic exchange and spin-orbit interactions designed to realistically capture the salient magnetic features of large nanoclusters containing up to 350 atoms. Two different truncations of the FCC lattice are studied, in which the nanoplatelet surface is aligned parallel to the FCC (111) and (001)crystal planes respectively. We find that the higher coordination number in the (111) truncated crystal is more likely to reproduce the perpendicular easy direction found in experiment. Qualitatively, the most important parameter governing the anisotropy of the model is found to be the value of the intra-atomic exchange integral J. If we set the value of J near the bulk value in order to reproduce the experimentally observed magnitude of the magnetic moments, we find both quasi-easy-planes and perpendicular easy directions. At larger values of J we find that the easy-axis of magnetization is perpendicular to the surface, and the value of the magnetic anisotropy energy per atom is larger. The possible role of hybridization with substrate surface states in the experimental systems is discussed.Comment: 15 pages, 13 figure

    Microwave Spectroscopy

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    Contains reports on two research projects.Lincoln Laboratory, Purchase Order DDL B-00368U. S. ArmyU. S. NavyU. S. Air Force under Air Force Contract AF19(604)-740

    Microwave Spectroscopy

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    Contains research objectives and reports on five research projects
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