S. A. Hewitt

发表

Detection of clenbuterol residues in bovine liver, muscle, retina and urine using gas chromatography/mass spectrometry.

C. Elliott, D. Kennedy, A. Cannavan, 1993, Biological mass spectrometry.

Rate Constants for the Reactions of Chlorine Atoms with Deuterated Methanes: Experiment and Theory†

D. Robichaud, S. A. Hewitt, G. D. Boone, 2001 .

Observations on the effects of long-term withdrawal on carcass composition and residue concentrations in clenbuterol-medicated cattle

D. Kilpatrick, C. Elliott, J. Mcevoy, 2005, Veterinary Research Communications.

Diode laser probing of vibrational, rotational, and translational excitation of CO2 following collisions with O(1D). I. Inelastic scattering

G. Flynn, T. Kreutz, Lei Zhu, 1990 .

Diode laser probing of the low frequency vibrational modes of baths of CO2 and N2O excited by relaxation of highly excited NO2

G. Flynn, J. Hershberger, J. Z. Chou, 1989 .

Screening for chloramphenicol residues in the tissues and fluids of treated cattle by the four plate test, Charm II radioimmunoassay and Ridascreen CAP-Glucuronid enzyme immunoassay.

C. Elliott, J. Mcevoy, S. A. Hewitt, 1998, The Analyst.

Screening and confirmatory strategies for the surveillance of anabolic steroid abuse within Northern Ireland

D. Kennedy, S. A. Hewitt, J. Currie, 2002 .

Monensin carry-over into unmedicated broiler feeds.

J. Mcevoy, D. Kennedy, S. A. Hewitt, 1998, The Analyst.

Determination of ivermectin residues in the tissues of Atlantic salmon (Salmo salar) using HPLC with fluorescence detection.

D. Kennedy, A. Cannavan, D. Rice, 1993, Food additives and contaminants.

Use of liquid chromatography-mass spectrometry in the analysis of residues of antibiotics in meat and milk.

D. Kennedy, A. Cannavan, S. A. Hewitt, 1998, Journal of chromatography. A.

Electrochemical cyclization of 1-phenyl-2(-1′chlorophenyl)-substituted five-membered nitrogen heterocycles. Application to the synthesis of phenanthridines

J. Grimshaw, S. A. Hewitt, 1990 .

Sensitive gas chromatographic-high resolution mass spectrometric method for the determination of methylmalonic acid in bovine plasma.

D. Kennedy, W. J. Blanchflower, P. Young, 1995, The Analyst.

Plasma concentrations of fenbendazole and its metabolites in poultry after a single oral administration.

A. Houston, D. Kennedy, S. Taylor, 1993, Journal of veterinary pharmacology and therapeutics.

The production of pig tissue sulphadimidine reference material.

C. Elliott, J. Mcevoy, W. Mccaughey, 1996, Food additives and contaminants.

Comparison of the determination of four sulphonamides and their N4-acetyl metabolites in swine muscle tissue using liquid chromatography with ultraviolet and mass spectral detection.

S. A. Hewitt, G. Balizs, S. Börner, 1994, Journal of chromatography. B, Biomedical applications.

Gas chromatographic-mass spectrometric determination of sulfamethazine in animal tissues using a methyl/trimethylsilyl derivative.

D. Kennedy, A. Cannavan, W. J. Blanchflower, 1996, The Analyst.

An investigation of the 355 nm photodissociation of NO2 by state‐resolved photofragment imaging

B. J. Whitaker, P. Houston, V. Hradil, 1993 .

Diode laser probing of CO2 and CO vibrational excitation produced by collisions with high energy electrons from 193 nm excimer laser photolysis of iodine

G. Flynn, Lei Zhu, S. A. Hewitt, 1992 .

Effects of dietary variations on plasma concentrations of oral flukicides in sheep.

D. Kennedy, S. Taylor, J. Blanchflower, 1993, Journal of veterinary pharmacology and therapeutics.

Two-dimensional imaging of state-selected photofragments: the 355 nm photolysis of NO2

B. J. Whitaker, P. Houston, T. Suzuki, 1991 .

Rotationally and translationally resolved hot atom collisional excitation of the CO2 Fermi mixed bend/stretch vibrational levels by time‐dependent diode laser spectroscopy

G. Flynn, R. E. Weston, J. Hershberger, 1990 .

Diode laser probing of the high-frequency vibrational modes of baths of CO sub 2 , N sub 2 O, and CO excited by relaxation of highly excited NO sub 2

B. Brady, J. Hershberger, J. Z. Chou, 1989 .

Liquid chromatography-thermospray mass spectrometric assay for trenbolone in bovine bile and faeces.

C. Elliott, W. Mccaughey, D. Kennedy, 1993, Journal of chromatography.

Zeranol is formed from Fusarium spp. toxins in cattle in vivo.

J. Mcevoy, D. Kennedy, C. Elliot, 1998, Food additives and contaminants.

Effect of Various Lithotomy Positions on Lower‐extremity Blood Pressure

M. Joyner, J. Halliwill, M. Warner, 1998, Anesthesiology.

Development and validation of an improved method for confirmation of the carbadox metabolite, quinoxaline-2-carboxylic acid, in porcine liver using LC-electrospray MS-MS according to revised EU criteria for veterinary drug residue analysis.

D. Kennedy, M. Hutchinson, D. Faulkner, 2002, The Analyst.

Absence of evidence for testicular production of nortestosterone in the bull

J. Mcevoy, C. McVeigh, W. Mccaughey, 1999, The Veterinary Record.

Comparison of two polyclonal antibodies for the detection of 19-nortestosterone in bovine bile by ELISA

C. Elliott, J. Mcevoy, W. Mccaughey, 1998 .

Iso- and epi-iso-chlortetracycline and the principal metabolites of chlortetracycline in the hen's egg.

D. Kennedy, W. J. Blanchflower, S. A. Hewitt, 1998, Journal of chromatography. A.

5α-Estrane-3β,17β-diol and 5β-estrane-3α,17β-diol: Definitive screening biomarkers to sign nandrolone abuse in cattle?

F. Monteau, G. Dervilly-Pinel, D. Kennedy, 2011, The Journal of Steroid Biochemistry and Molecular Biology.

Occurrence of α- and β-nortestosterone residues in the urine of injured male cattle

S. Crooks, P. Young, S. A. Hewitt, 2009, Food additives & contaminants. Part A, Chemistry, analysis, control, exposure & risk assessment.

Biliary elimination of endogenous nortestosterone by pregnant cows

J. Mcevoy, C. McVeigh, W. Mccaughey, 1998, Veterinary Record.

Quantum state‐resolved study of pure rotational excitation of CO2 by hot atoms

G. Flynn, R. E. Weston, S. Sarkar, 1989 .

Observation of an odd/even delta‐J propensity in the collisional excitation of CO2 by hot deuterium atoms

G. Flynn, R. E. Weston, J. Hershberger, 1988 .

Rotationally resolved isotope effect in the hot atom collisional excitation of CO2 (0001) by time‐dependent diode laser spectroscopy

G. Flynn, R. E. Weston, J. Hershberger, 1987 .

Quantum interference effects on the collisional excitation of the Fermi doublet states of CO2 by hot electrons and hot H(D) atoms

G. Flynn, Lei Zhu, S. A. Hewitt, 1991 .

Diode laser probing of the antisymmetric stretch mode of CO2 produced by collisions with electrons from 193 nm excimer laser photolysis of iodine

G. Flynn, Lei Zhu, S. A. Hewitt, 1990 .

Metabolism of chlortetracycline: drug accumulation and excretion in the hen's egg.

J. Mcevoy, D. Kennedy, S. A. Hewitt, 1998, The Analyst.

Determination of trimethoprim in tissues using liquid chromatography-thermospray mass spectrometry.

D. Kennedy, A. Cannavan, S. A. Hewitt, 1997, The Analyst.

Comparison of conventional immunoassays and the oestrogen radioreceptor assay for screening for the presence of oestrogenic anabolic compounds in urine samples.

R. Witkamp, S. A. Hewitt, C. Elliot, 1998, In Analysis.

RATE CONSTANT FOR THE REACTION OF CL WITH CHCL3

S. A. Hewitt, G. D. Boone, Karen M. Brahan, 1996 .