Utilizing Drones to Restore and Maintain Radio Communication During Search and Rescue Operations     

Jake N. McRae  Brandon M. Nielsen  Christopher J. Gay  Andrew P. Hunt  Andrew D. Nigh 《The Forestry Chronicle》2021,32(1):41-46

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Carbonic anhydrase and osteoclasts: localization by labeled inhibitor autoradiography   总被引：7，自引：0，他引：7  

C V Gay  W J Mueller 《Science (New York, N.Y.)》1974,183(123):432-434

Autoradiography with tritiated acetazolamide indicates that osteoclasts of the hen and chick contain concentrations of carbonic anhydrase which are similar to those in pancreatic acinar cells. Grain counts of osteoblasts and osteocytes were not different from background. Thus, a sufficient quantity of carbonic anhydrase seems to be present in osteoclasts to be of physiological importance in bone resorption.  相似文献   

Diffraction and mossbauer studies of minerals from lunar soils and rocks     

Gay P  Bancroft GM  Bown MG 《Science (New York, N.Y.)》1970,167(3918):626-628

Constituents of lunar soils and rocks were studied by powder and singlecrystal x-ray diffraction. In addition to identification of minerals, including rare amphibole, mica, and aragonite, a detailed study of the important rock-forming minerals of the plagioclase, pyroxene, and olivine groups has begun. M?ssbauer spectra were recorded from lunar soils, ground rock samples, and separates of iron-bearing minerals. The proportions of iron-bearing minerals were estimated from computer-fitted areas for the bulk samples. The Fe(2+) in the lower-density fraction of pyroxene was ordered, whereas that of the higher-density fraction was disordered.  相似文献   

Spherules on shatter cone surfaces from the vredefort structure, South Africa     

Gay NC 《Science (New York, N.Y.)》1976,194(4266):724-725

Spherical particles of silicate composition occur on the surface of some shatter cones from the collar rocks around the Vredefort structure, South Africa. They are best developed on shatter cones from a shale horizon but are also found on more arenaceous rocks and banded ironstones. They have not been found on shatter cones from the purer quartzites.  相似文献   

THE CONTRIBUTION OF MEDICAL SCIENCE TO MEDICAL ART AS SHOWN IN THE STUDY OF TYPHOID FEVER     

Gay FP 《Science (New York, N.Y.)》1916,44(1126):109-124

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SPECIALIZATION AND RESEARCH IN THE MEDICAL SCIENCES     

Gay FP 《Science (New York, N.Y.)》1917,45(1150):25-33

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Root diseases, weeds, and nematodes with poultry litter and conservation tillage in a sweet corn–snap bean double crop     

Donald R. Sumner  Melvin R. Hall  J. Danny Gay  Greg MacDonald  Stanley I. Savage  R. Keith Bramwell 《Crop Protection》2002,21(10):963-972

The effect of continuous applications of poultry litter on root diseases, nematodes, and weeds with different tillage practices in vegetable production in Georgia was investigated. Litter treatments (noncomposted and composted broiler or breeder litter) applied 3–5 weeks before planting were compared with no litter. In sweet corn and snap bean there were differences among years, and tillage and litter treatments had a variable effect on yield, post-emergence damping-off and plant stand. Crown and brace root rot in corn induced by Rhizoctonia solani AG 2-2 increased after 3 years conservation tillage, but there were no differences among litter treatments. Population densities of R. solani AG-4 were increased by conservation tillage before planting snap bean the first year but not in later years, while litter treatments had no effect. After 3 years, populations of Pythium spp., Fusarium solani, and Fusarium spp. did not differ among treatments, but noncomposted broiler litter increased populations of saprophytic fungi in soil compared with no litter. Population densities of stylet-bearing nematodes were low and usually not different among treatments. After 3 years of sweet corn populations of Meloidogyne incognita increased with conventional tillage compared with conservation tillage, populations of Paratrichodorus christiei were reduced by litter treatments and populations of Helicotylenchus dihystera were reduced by noncomposted broiler litter compared with no litter. Weed infestation increased in both tillage systems with time, but in snap bean there was a greater infestation in conservation tillage than in conventional tillage. Litter treatments had little effect on weed infestation.  相似文献   

Seroprevalence of antibodies against Neospora caninum in diagnostic equine serum samples and their possible association with fetal loss     

McDole MG  Gay JM 《Veterinary parasitology》2002,105(3):257-260

A case-control study of the association between the presence of serum antibodies against Neospora spp. and fetal loss was performed on serum samples submitted to a veterinary diagnostic laboratory in northwestern United States. Control sera were randomly selected from those submitted from healthy horses for routine equine infectious anemia testing required for regulatory health certification. Case sera were randomly selected from those submitted from aborting mares for diagnostic workup. Based on a 1:50 or greater titer on the indirect fluorescent antibody test, 8% of the 160 control sera and 13% of the 140 case sera were titer positive. The association odds ratio of 1.67 fell short of statistical significance (p=0.124).  相似文献   

Partitioning the Mortality Risk Associated with Inadequate Passive Transfer of Colostral Immunoglobulins in Dairy Calves     

Jeff W. Tyler  Dale D. Hancock  James G. Thorne  Clive C. Gay  John M. Gay 《Journal of veterinary internal medicine / American College of Veterinary Internal Medicine》1999,13(4):335-337

This study developed a method to partition the risk of mortality in dairy calves in the 1st 16 weeks of life. Observed population mortality and the relative risk of mortality in each serum protein concentration stratum were used to determine the population baseline mortality rate and the mortality rate due to inadequate passive transfer of colostral immunoglobulin. A total of 3,479 calves were studied, 8.2% of which died before 16 weeks of age. The population baseline mortality rate was 5.0% and the mortality rate due to inadequate passive transfer was 3.2%. Thirty-nine percent of the observed mortality was attributed to inadequate passive transfer. This partitioning of risk between passive transfer-related and unrelated sources should prove useful in conducting investigations of calf mortality problems in dairy herds.  相似文献   

The limitations of locust preventive management faced with spatial uncertainty: exploration with a multi‐agent model     

Pierre‐Emmanuel Gay  Michel Lecoq  Cyril Piou 《Pest management science》2020,76(3):1094-1102

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