138 research outputs found
Field Evaluation of Herbicides on Small Fruit, Vegetable, and Ornamental Crops, 1997
Growers generally use herbicides to efficiently produce high-quality fruit and vegetables for processing or fresh market sales. Due to the smaller acreage of these crops compared to major field crops, fewer herbicides are registered for use in fruit and vegetable crops than for field crops. Each year, new herbicides are evaluated under Arkansas growing conditions with the objective of improving the herbicide technology for the grower, processor, and ultimately the consumer. This report includes studies on the control of many of the more serious weed problems in important crops of this region, including snapbeans, spinach, southern pea, watermelon, cantaloupe, tomato, blackberry, and grape. In addition, the report includes information on the tolerance of selected bedding plants to some effective herbicides
Field Evaluation of Herbicides on Small Fruit, Vegetable, and Ornamental Crops, 1998
Growers generally use herbicides to efficiently produce high-quality fruit and vegetables for processing or fresh market sales. Due to the smaller acreage of these crops compared to major field crops, fewer herbicides are registered for use in fruit and vegetable crops than for field crops. Each year, new herbicides are evaluated under Arkansas growing conditions with the objective of improving the herbicide technology for the grower, processor, and ultimately the consumer. This report includes studies on the control of many of the more serious weed problems in important crops of this region, including snapbeans, spinach, southernpeas, watermelon, cantaloupe, summer squash, and grapes. In addition, the report includes information on the tolerance of selected bedding plants to some effective herbicides
Field Evaluation of Herbicides on Small Fruit, Vegetable, and Ornamental Crops, 1999
Growers generally use herbicides to efficiently produce high-quality fruit and vegetables for processing or fresh market sales. Because of the smaller acreage of these crops compared with major field crops, fewer herbicides are registered for use in fruit and vegetable crops than for field crops. Each year, new herbicides are evaluated under Arkansas growing conditions with the objective of improving the herbicide technology for the grower, processor, and ultimately the consumer. This report includes studies on the control of many of the more serious weed problems in important crops of this region, including snapbeans, spinach and other greens, southernpeas, tomatoes, and grapes
Young stars at large distances from the galactic plane: mechanisms of formation
We have collected from the literature a list of early-type stars, situated at
large distances from the galactic plane, for which evidence of youth seems
convincing. We discuss two possible formation mechanisms for these stars:
ejection from the plane by dynamical interactions within small clusters, and
formation away from the plane, via induced shocks created by spiral density
waves. We identify the stars that could be explained by each mechanism. We
conclude that the ejection mechanism can account for about two thirds of the
stars, while a combination of star formation at z = 500-800 pc from the plane
and ejection, can account for 90 percent of these stars. Neither mechanism, nor
both together, can explain the most extreme examples.Comment: 6 pages, No figures. Sixth Pacific Rim Conference on Stellar
Astrophysics - A tribute to Helmut Abt, (Kluwer
SkyMapper Southern Survey: First Data Release (DR1)
We present the first data release (DR1) of the SkyMapper Southern Survey, a
hemispheric survey carried out with the SkyMapper Telescope at Siding Spring
Observatory in Australia. Here, we present the survey strategy, data
processing, catalogue construction and database schema. The DR1 dataset
includes over 66,000 images from the Shallow Survey component, covering an area
of 17,200 deg in all six SkyMapper passbands , while the full area
covered by any passband exceeds 20,000 deg. The catalogues contain over 285
million unique astrophysical objects, complete to roughly 18 mag in all bands.
We compare our point-source photometry with PanSTARRS1 DR1 and note an
RMS scatter of 2%. The internal reproducibility of SkyMapper photometry is on
the order of 1%. Astrometric precision is better than 0.2 arcsec based on
comparison with Gaia DR1. We describe the end-user database, through which data
are presented to the world community, and provide some illustrative science
queries.Comment: 31 pages, 19 figures, 10 tables, PASA, accepte
Effect of patiromer on reducing serum potassium and preventing recurrent hyperkalaemia in patients with heart failure and chronic kidney disease on RAAS inhibitors
Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/115921/1/ejhf402_am.pdfhttp://deepblue.lib.umich.edu/bitstream/2027.42/115921/2/ejhf402.pd
SkyMapper Southern Survey: Second Data Release (DR2)
We present the second data release (DR2) of the SkyMapper Southern Survey, a
hemispheric survey carried out with the SkyMapper Telescope at Siding Spring
Observatory in Australia, using six optical filters: . DR2 is the
first release to go beyond the 18mag (10) limit of the Shallow
Survey released in DR1, and includes portions of the sky at full survey depth
that reach >21mag in and filters. The DR2 photometry has a precision as
measured by internal reproducibility of 1% in and , and 0.7% in .
More than 21 000 deg have data in some filters (at either Shallow or Main
Survey depth) and over 7 000 deg have deep Main Survey coverage in all six
filters. Finally, about 18 000 deg have Main Survey data in and
filters, albeit not yet at full depth. The release contains over 120 000
images, as well as catalogues with over 500 million unique astrophysical
objects and nearly 5 billion individual detections. It also contains
cross-matches with a range of external catalogues such as Gaia DR2, Pan-STARRS1
DR1, GALEX GUVcat, 2MASS, and AllWISE, as well as spectroscopic surveys such as
2MRS, GALAH, 6dFGS, and 2dFLenS.Comment: 21 pages, 17 figures. As of 25 Aug 2020, DR2 is available to the
world at http://skymapper.anu.edu.a
Nova Sagittarii 1998 (V4633 Sgr) - a permanent superhump system or an asynchronous polar?
We report the results of observations of V4633 Sgr (Nova Sagittarii 1998)
during 1998-2000. Two photometric periodicities were present in the light curve
during the three years of observations: a stable one at P=3.014 h, which is
probably the orbital period of the underlying binary system, and a second one
of lower coherence, approximately 2.5 per cent longer than the former. The
latter periodicity may be a permanent superhump, or alternatively, the spin
period of the white dwarf in a nearly synchronous magnetic system. A third
period, at P=5.06 d, corresponding to the beat between the two periods was
probably present in 1999. Our results suggest that a process of mass transfer
took place in the binary system since no later than two and a half months after
the nova eruption. We derive an interstellar reddening of E(B-V)~0.21 from our
spectroscopic measurements and published photometric data, and estimate a
distance of d~9 kpc to this nova.Comment: 13 pages, latex, 7 figures, accepted for publication in MNRA
One-Loop Corrections to Two-Quark Three-Gluon Amplitudes
We present the one-loop QCD amplitudes for two external massless quarks and
three external gluons (). This completes the set of one-loop
amplitudes needed for the next-to-leading-order corrections to three-jet
production at hadron colliders. We also discuss how to use group theory and
supersymmetry to minimize the amount of calculation required for the more
general case of one-loop two-quark -gluon amplitudes. We use collinear
limits to provide a stringent check on the amplitudes.Comment: plain Tex, 46 pages with 13 figures in a uuencoded file, corrected
case j=1 of eq. (IV.7), and signs in eq. (4.9
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