2,447 research outputs found
Meat and bone meal as fertilizer for oats - From slaughter house waste to fertilizer
EU permitted in 2006 the use of meat bone meal(MBM) as fertilizer. MTT Agrifood Research Finland's Kannus conducted a field experiment from 2000 to 2003 with a supplement experiment in 2004. The fertilization effect was 24 % higher after MBM than after chemical fertilizers
Meat bone meal as nitrogen and phosphorus fertilizer
Meat bone meal (MBM) contains considerable amount of nutrients (~8 % N, ~ 5 % P and ~ 10 Ca). To quantify and qualify MBM use as an N and P fertilizers, two field experiments were done on spring barley and oat in 2000 and 2001
Bursts of ULF noise excited by sudden changes of solar wind dynamic pressure
International audienceWe present the results of analysis of the dayside magnetic pulsation response to a sudden change in solar wind dynamic pressure. We concentrate on the events when a burst or a series of short-lived bursts in the Pc1 frequency range with the repetition period of 7?15 min were observed on the ground around the local noon. Not every impulse of large amplitude caused this phenomenon. We have found that the ULF bursts were excited when the spectrograms of the DMSP satellites showed a signature of 10?30 keV ions in the vicinity of the magnetic flux tube of the ground observatory, that may be related to a geomagnetic storm preceding the event. In light of this finding a possible model of the phenomenon is suggested in which the hot protons influence significantly both the generation and modulation of Pc1 activity
A Small Interstellar Probe to the Heliospheric Boundary and Interstellar Space
The Small Interstellar Probe m1ss1on would be designed to cross the solar wind
termination shock and the heliopause, and make a significant penetration into nearby
interstellar space. The principal scientific objectives of this mission would be to explore the
structure of the heliosphere, to investigate its interaction with the interstellar medium, and to
explore the nature of the interstellar medium itself. These studies would be carried out by a
~200 kg spacecraft carrying a scientific payload designed to make comprehensive, in situ
measurements of both heliospheric and interstellar plasma, fields, energetic particles, gas, and
dust. New trajectory calculations indicate significantly improved performance over earlier
studies with larger spacecraft, including spacecraft velocities ranging from -6 to -14 AU/yr.,
depending on trajectory and launch vehicle
Policy instruments and welfare state reform
A core, but so far untested, proposition of the new politics perspective, originally introduced by Paul
Pierson, is that welfare state cutbacks will be implemented using so-called ‘invisible’ policy instruments,
for example, a change in indexation rules. Expansion should, by implication, mainly happen using ‘visible’
policy instruments, for example, a change in nominal benefits. We have coded 1030 legislative reforms of
old-age pensions and unemployment protection in Britain, Denmark, Finland and Germany from 1974 to
2014. With this unique data at hand, we find substantial support for this crucial new politics proposition
The High A(V) Quasar Survey: Reddened quasi-stellar objects selected from optical/near-infrared photometry - II
Quasi-stellar objects (QSOs) whose spectral energy distributions (SEDs) are
reddened by dust either in their host galaxies or in intervening absorber
galaxies are to a large degree missed by optical color selection criteria like
the one used by the Sloan Digital Sky Survey (SDSS). To overcome this bias
against red QSOs, we employ a combined optical and near-infrared color
selection. In this paper, we present a spectroscopic follow-up campaign of a
sample of red candidate QSOs which were selected from the SDSS and the UKIRT
Infrared Deep Sky Survey (UKIDSS). The spectroscopic data and SDSS/UKIDSS
photometry are supplemented by mid-infrared photometry from the Wide-field
Infrared Survey Explorer. In our sample of 159 candidates, 154 (97%) are
confirmed to be QSOs. We use a statistical algorithm to identify sightlines
with plausible intervening absorption systems and identify nine such cases
assuming dust in the absorber similar to Large Magellanic Cloud sightlines. We
find absorption systems toward 30 QSOs, 2 of which are consistent with the
best-fit absorber redshift from the statistical modeling. Furthermore, we
observe a broad range in SED properties of the QSOs as probed by the rest-frame
2 {\mu}m flux. We find QSOs with a strong excess as well as QSOs with a large
deficit at rest-frame 2 {\mu}m relative to a QSO template. Potential solutions
to these discrepancies are discussed. Overall, our study demonstrates the high
efficiency of the optical/near-infrared selection of red QSOs.Comment: 64 pages, 18 figures, 16 pages of tables. Accepted to ApJ
- …