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1.
Comparison of optical density differences in aerial photographs between plant canopy and soils with varying surface moisture.
Jackson, H R; Wallen, V R.
J Biol Photogr Assoc ; 47(1): 43-7, 1979 Jan.
Article in English | MEDLINE | ID: mdl-762175

Subject(s)
Densitometry , Photography , Plants, Edible , Soil , Water , Zea mays , Aviation , Canada , Optics and Photonics
2.
Image reconstructions from optical separations of aerial photographs.
Jackson, H R; Wallen, V R; Downer, J F; Sharp, W R.
J Biol Photogr Assoc ; 43(3): 113-8, 1975 Jul.
Article in English | MEDLINE | ID: mdl-1141249

Subject(s)
Image Enhancement/methods , Photography/methods , Aviation , Color
3.
The effect of acetylsalicylic acid on the response of the cardiovascular system to catecholamines.
Jackson, H R; Johnson, S M; Ng, K H; Pye, W; Hall, R C.
Eur J Pharmacol ; 28(1): 119-24, 1974 Sep.
Article in English | MEDLINE | ID: mdl-4430317

Subject(s)
Aspirin/pharmacology , Catecholamines/pharmacology , Hemodynamics/drug effects , Animals , Arteries/drug effects , Cardiac Output/drug effects , Desoxycorticosterone/pharmacology , Dogs , Dose-Response Relationship, Drug , Drug Synergism , Ear/blood supply , Female , In Vitro Techniques , Isoproterenol/pharmacology , Male , Muscle, Smooth/drug effects , Norepinephrine/pharmacology , Normetanephrine/pharmacology , Perfusion , Rabbits
4.
The effect of aspirin on the pulmonary extraction of PGF2alpha and cardiovascular response to PGF2apha.
Jackson, H R; Hall, R C; Hodge, R L; Gibson, E; Katic, F; Stevens, M.
Aust J Exp Biol Med Sci ; 51(6): 837-45, 1973 Dec.
Article in English | MEDLINE | ID: mdl-4788457

Subject(s)
Aspirin/pharmacology , Hemodynamics/drug effects , Lung/metabolism , Prostaglandins/pharmacology , Animals , Arteries , Biological Assay , Blood Pressure/drug effects , Cardiac Output/drug effects , Central Venous Pressure/drug effects , Depression, Chemical , Dogs , Female , Infusions, Parenteral , Male , Prostaglandins/metabolism , Rats , Veins
5.
The effect of aspirin on the response to the rabbit ear artery.
Jackson, H R; Hall, R C.
Eur J Pharmacol ; 21(1): 107-10, 1973 Jan.
Article in English | MEDLINE | ID: mdl-4709195

Subject(s)
Arteries/drug effects , Aspirin/pharmacology , Animals , Aspirin/antagonists & inhibitors , Catecholamines/metabolism , Cell Membrane/drug effects , Cell Membrane/metabolism , Cocaine/pharmacology , Dose-Response Relationship, Drug , Drug Synergism , Ear/blood supply , Electric Stimulation , In Vitro Techniques , Methoxamine/pharmacology , Muscle, Smooth/cytology , Neurons/cytology , Neurons/metabolism , Norepinephrine/pharmacology , Rabbits
6.
Natural science photography. 4.
Jackson, H R.
J Biol Photogr Assoc ; 40(4): 189-208, 1972 Oct.
Article in English | MEDLINE | ID: mdl-4638045

Subject(s)
Entomology , Paleontology , Photography , Lighting
7.
Natural science photography.
Jackson, H R.
J Biol Photogr Assoc ; 40(3): 124-62, 1972 Jul.
Article in English | MEDLINE | ID: mdl-4114564

Subject(s)
Photography , Autoradiography , Bacteriophage Typing , Color , Fluorescence , Gels , Infrared Rays , Plant Diseases , Precipitin Tests , Staining and Labeling , Starch
8.
Natural science photography. 2.
Jackson, H R.
J Biol Photogr Assoc ; 40(2): 79-98, 1972 Apr.
Article in English | MEDLINE | ID: mdl-5032977

Subject(s)
Biology , Photography , Chromatography, Paper , Chromatography, Thin Layer , Color , Fluorescence , Light , Lighting
9.
Natural science photography. I.
Jackson, H R.
J Biol Photogr Assoc ; 40(1): 35-50, 1972 Jan.
Article in English | MEDLINE | ID: mdl-5020941

Subject(s)
Photography , Science
10.
Potato late blight intensity levels as determined by microdensitometer studies of false-color aerial photographs.
Jackson, H R; Hodgson, W A; Wallen, V R; Philpotts, L E; Hunter, J.
J Biol Photogr Assoc ; 39(2): 101-6, 1971 Apr.
Article in English | MEDLINE | ID: mdl-5110712

Subject(s)
Densitometry , Photography , Plant Diseases
11.
Minimizing perspective error in gross photography.
Jackson, H R.
J Biol Photogr Assoc ; 36(2): 55-7, 1968 May.
Article in English | MEDLINE | ID: mdl-5652818

Subject(s)
Photography , Physical Phenomena , Physics
12.
Historical survey of scientific and technical photography in Canada.
Jackson, H R.
Can Med Assoc J ; 98(4): 223, 1968 Jan 27.
Article in English | MEDLINE | ID: mdl-20329151
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