Lipoidal corneal degeneration in aged falcons          下载免费PDF全文

Bret A. Moore  Joanne R. Paul‐Murphy  Kathleen L. Adamson  Richard R. Dubielzig  Thomas Kern  Ben J. Gonzales  Peregrine Wolff  Christopher J. Murphy 《Veterinary ophthalmology》2018,21(4):332-338

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Motorlastwagen im Dienste des Holztransportes     

Th Wolff 《Forstwissenschaftliches Centralblatt》1919,41(7):241-248

Ohne Zusammenfassung  相似文献   

ON THE SITE OF ACTION OF ACETYLCHOLINE AND ITS SIGNIFICANCE     

Cattell M  Wolff HG 《Science (New York, N.Y.)》1935,82(2118):106-107

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Failure of a single postpartum prostaglandin treatment to improve the reproductive performance of dairy cows     

JM MORTON  JD ALLEN†  DJ HARRIS‡  GT MILLER§ 《Australian veterinary journal》1992,69(7):158-160

A study was conducted to evaluate the effects of postpartum prostaglandin treatment on reproduction in 3 seasonal calving dairy herds. Recently calved lactating dairy cows were paired on herd, age, calving date and previous production index. One cow in each of the 196 pairs received a single intramuscular injection of 25 mg of the prostaglandin analogue, dinoprost, between 14 and 28 days after calving. Subsequent reproduction was monitored. Within each herd and overall, there was no significant effect of treatment on the intervals from calving to first service, mating start date to first service, calving to conception, mating start date to conception and first service to conception. Treatment also had no significant effect on 21-day submission and pregnancy rates, on the proportion of each group not pregnant at the end of mating, and on first service pregnancy rates. Responses to treatment did not vary between cows calving within 50 days of mating start date and earlier calving cows or between cows aged less than 5 years and older cows.  相似文献   

Measurement needs for developing and assessing ozone-control strategies     

Jon M. Heuss  George T. Wolff 《Water, air, and soil pollution》1993,67(1-2):79-92

The monitoring programs needed to design control strategies differ from those required to assess the impact of the strategies on air quality. The former are short-term and intensive. They are designed to obtain the data required to apply an urban-scale grid model, like the Urban Airshed Model, or a combination of an urban-scale and regional-scale model, like the Regional Oxidant Model, to an area without having to assume important input data. Such measurements include three-dimensional pollutant and meteorological measurements throughout the modeling domain. Detailed and accurate emissions inventories are also required. Model validation should compare not only the O₃ predictions with actual data, but also include comparisons for NO _x , individual volatile organic compounds (VOC), and if possible, additional species such as PAN, H₂O₂, formaldehyde, and HNO₃. To assess the impact of control strategies, long-term monitoring networks that measure O₃, NO _x and speciated VOC are needed. O₃ trends should be examined using robust, meteorologically-adjusted O₃ statistics. Such statistics need to be related to a robust National Ambient Air Quality Standard.  相似文献   

First Atmospheric Science Results from the Mars Exploration Rovers Mini-TES     

Smith MD  Wolff MJ  Lemmon MT  Spanovich N  Banfield D  Budney CJ  Clancy RT  Ghosh A  Landis GA  Smith P  Whitney B  Christensen PR  Squyres SW 《Science (New York, N.Y.)》2004,306(5702):1750-1753

Thermal infrared spectra of the martian atmosphere taken by the Miniature Thermal Emission Spectrometer (Mini-TES) were used to determine the atmospheric temperatures in the planetary boundary layer and the column-integrated optical depth of aerosols. Mini-TES observations show the diurnal variation of the martian boundary layer thermal structure, including a near-surface superadiabatic layer during the afternoon and an inversion layer at night. Upward-looking Mini-TES observations show warm and cool parcels of air moving through the Mini-TES field of view on a time scale of 30 seconds. The retrieved dust optical depth shows a downward trend at both sites.  相似文献   

Orbital and millennial Antarctic climate variability over the past 800,000 years   总被引：3，自引：0，他引：3  

Jouzel J  Masson-Delmotte V  Cattani O  Dreyfus G  Falourd S  Hoffmann G  Minster B  Nouet J  Barnola JM  Chappellaz J  Fischer H  Gallet JC  Johnsen S  Leuenberger M  Loulergue L  Luethi D  Oerter H  Parrenin F  Raisbeck G  Raynaud D  Schilt A  Schwander J  Selmo E  Souchez R  Spahni R  Stauffer B  Steffensen JP  Stenni B  Stocker TF  Tison JL  Werner M  Wolff EW 《Science (New York, N.Y.)》2007,317(5839):793-796

A high-resolution deuterium profile is now available along the entire European Project for Ice Coring in Antarctica Dome C ice core, extending this climate record back to marine isotope stage 20.2, approximately 800,000 years ago. Experiments performed with an atmospheric general circulation model including water isotopes support its temperature interpretation. We assessed the general correspondence between Dansgaard-Oeschger events and their smoothed Antarctic counterparts for this Dome C record, which reveals the presence of such features with similar amplitudes during previous glacial periods. We suggest that the interplay between obliquity and precession accounts for the variable intensity of interglacial periods in ice core records.  相似文献   

Response of subsoil organic matter contents and physical properties to long-term,high-rate farmyard manure application     

Frederic Leuther  Maximilian Wolff  Klaus Kaiser  Lena Schumann  Ines Merbach  Robert Mikutta  Steffen Schlüter 《European Journal of Soil Science》2022,73(2):e13233

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Plasma observations near uranus: initial results from voyager 2     

Bridge HS  Belcher JW  Coppi B  Lazarus AJ  McNutt RL  Olbert S  Richardson JD  Sands MR  Selesnick RS  Sullivan JD  Hartle RE  Ogilvie KW  Sittler EC  Bagenal F  Wolff RS  Vasyliunas VM  Siscoe GL  Goertz CK  Eviatar A 《Science (New York, N.Y.)》1986,233(4759):89-93

Extensive measurements of low-energy positive ions and electrons in the vicinity of Uranus have revealed a fully developed magnetosphere. The magnetospheric plasma has a warm component with a temperature of 4 to 50 electron volts and a peak density of roughly 2 protons per cubic centimeter, and a hot component, with a temperature of a few kiloelectron volts and a peak density of roughly 0.1 proton per cubic centimeter. The warm component is observed both inside and outside of L = 5, whereas the hot component is excluded from the region inside of that L shell. Possible sources of the plasma in the magnetosphere are the extended hydrogen corona, the solar wind, and the ionosphere. The Uranian moons do not appear to be a significant plasma source. The boundary of the hot plasma component at L = 5 may be associated either with Miranda or with the inner limit of a deeply penetrating, solar wind-driven magnetospheric convection system. The Voyager 2 spacecraft repeatedly encountered the plasma sheet in the magnetotail at locations that are consistent with a geometric model for the plasma sheet similar to that at Earth.  相似文献   

Spectral reflectance and morphologic correlations in eastern Terra Meridiani, Mars   总被引：1，自引：0，他引：1  

Arvidson RE  Poulet F  Bibring JP  Wolff M  Gendrin A  Morris RV  Freeman JJ  Langevin Y  Mangold N  Bellucci G 《Science (New York, N.Y.)》2005,307(5715):1591-1594

The Mars Express Observatoire pour la Minéralogie, l'Eau, les Glaces, et l'Activité (OMEGA) hyperspectral image data covering eastern Terra Meridiani indicate the ubiquitous presence of molecular water in etched terrain materials that disconformably overlie heavily cratered terrains and underlie the hematite-bearing plains explored by the Opportunity rover. Identification of crystalline water in kieserite (MgSO4.H2O) is linked to materials exposed in a valley and plateau to the north of hematite-bearing plains. The mineralogical similarities between the etched terrain deposits examined with OMEGA data and the layered rocks examined by Opportunity imply that the ancient aqueous environments inferred from analyses of the rover data extend over regional scales.  相似文献