Zobrazeno 1 - 10 of 15 pro vyhledávání: '"Valerie B Reeves"'
1
EFFECTS OF APODIZATION FUNCTION, ZERO FILLING, BACKGROUND SPECTRA, AND ABSORBANCE TRANSFORMATION ON MID-INFRARED CALIBRATIONS FOR FEED COMPOSITION
Autor: Valerie B. Reeves, James B. Reeves
Publikováno v: Spectroscopy Letters. 35:663-680
Research has demonstrated that diffuse reflectance mid-infrared spectroscopy can, like near-infrared diffuse reflectance, be used to quantitatively determine the composition of ground samples of forages and soils without the need for KBr dilution. Wh
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b382e072c61ba3faceb78387aea9801d
https://doi.org/10.1081/sl-120014938
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2
Procedure for Detecting and Confirming Pentobarbital Residues in Dog Food by Gas Chromatography/Mass Spectrometry
Autor: Valerie B Reeves, Laura A Adam
Publikováno v: Journal of AOAC INTERNATIONAL. 81:359-367
The method described detects and confirms presence of pentobarbital residues in dry, extruded feeds at concentrations of 5-20 ppb. Dried feed is ground to a uniform powder and shaken overnight in methanol. A portion of the methanolic extract is evapo
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::425b7c6e9d7bd318bf087a25725fe683
https://doi.org/10.1093/jaoac/81.2.359
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3
Determination of Ceftiofur in Bovine Milk by Liquid Chromatography
Autor: P. J. Mcneilly, E. J. I. Deveau, Valerie B Reeves
Publikováno v: Journal of AOAC INTERNATIONAL. 79:844-847
A liquid chromatographic procedure is described for determination of ceftiofur (CEF) residues in milk. Milk samples were diluted with ammonium acetate solution and extracted on a C18 solid-phase extraction (SPE) column. After the analyte was eluted f
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::51a486c8cfc39a5bed43949340b15504
https://doi.org/10.1093/jaoac/79.4.844
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4
Liquid Chromatographic Procedure for the Determination of Novobiocin Residues in Bovine Milk: Interlaboratory Study
Autor: Valerie B Reeves
Publikováno v: Journal of AOAC INTERNATIONAL. 78:55-58
Novobiocin is used for the treatment of mastitis in dairy cattle. In 1982, the tolerance was set at 0.1 ppm in milk from dairy animals. A laboratory trial has been completed for a liquid chromatographic procedure that can quantitate novobiocin residu
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::97776bb2da5061ef43e155dde41788d3
https://doi.org/10.1093/jaoac/78.1.55
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6
Mid-infrared diffuse reflectance spectroscopy for the quantitative analysis of agricultural soils
Autor: Gregory W. McCarty, Valerie B. Reeves, James B. Reeves
Publikováno v: Journal of agricultural and food chemistry. 49(2)
Soil samples were analyzed conventionally and by mid-infrared diffuse reflectance spectroscopy for total C, total N, pH, and measures of biological activity. Ground, non KBr diluted, samples (n = 180) from experimental plots (two locations, three rep
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e4a74fa0b731b2f868f0638f524fe1f7
https://pubmed.ncbi.nlm.nih.gov/11262026
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10
Ion trap and quadrupole mass spectra of lignin pyrolysates: how well do they compare?
Autor: Valerie B. Reeves, Guido C. Galletti, Barry A. Francis, James B. Reeves
Publikováno v: Rapid communications in mass spectrometry : RCM. 7(7)
Lignin samples from wheat straw, orchard grass, red clover and a synthetic lignin were subjected to pyrolysis gas chromatography/mass spectrometry using both quadrupole (QMS) and ion-trap detector (ITD). ITD mass spectra were comparable with those pr
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4990d5278b21d8efba452c4de8131a02
https://pubmed.ncbi.nlm.nih.gov/8347868
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