• Publications
  • Influence
Anisotropic imaging in the dragonfly median ocellus: a matched filter for horizon detection
Abstract. It is suggested that the dragonfly median ocellus is specifically adapted to detect horizontally extended features rather than merely changes in overall intensity. Evidence is presentedExpand
  • 68
  • 4
Range and egomotion estimation from compound photodetector arrays with parallel optical axis using optical flow techniques.
  • J. Chahl
  • Physics, Medicine
  • Applied optics
  • 20 January 2014
This paper describes an application for arrays of narrow-field-of-view sensors with parallel optical axes. These devices exhibit some complementary characteristics with respect to conventionalExpand
  • 10
  • 1
Environmental temperature and choline requirements in rats. II. Choline and methionine requirements for lipotropic activity.
Young rats were fed choline-deficient diets and maintained at different environmental temperatures. The hepatic lipid level remained normal in rats at 2 degrees when 25 mg of choline per 100 g ofExpand
  • 7
  • 1
A multisample applicator for quantitative thin-layer chromatographic analysis.
  • J. Chahl, C. Kratzing
  • Materials Science, Medicine
  • Clinica chimica acta; international journal of…
  • 1 October 1969
  • 9
Plasma extravasation induced by dynorphin-(1-13) in rat skin.
  • L. Chahl, J. Chahl
  • Chemistry, Medicine
  • European journal of pharmacology
  • 27 May 1986
The plasma extravasation response to dynorphin-(1-13) was investigated using the Evans blue dye leakage technique. Dynorphin induced plasma extravasation in rat and guinea-pig abdominal skin with aExpand
  • 35
The role of prostaglandins in chemically induced inflammation.
  • J. Chahl, L. Chahl
  • Chemistry, Medicine
  • British journal of experimental pathology
  • 1976
Dye leakage in rats, produced by intracutaneous injections of irritants into the abdominal skin, was quantitated using the Evans blue technique of Harada et al. (1971). In control rats and in ratsExpand
  • 12
Environmental temperature and choline requirement in rats. I. Choline deficiency in rats at various temperatures.
Rats were maintained at 2 degrees, 21 degrees, and 33 degrees for 3 weeks on a choline-supplemented or a choline-deficient diet. In contrast to the findings of some other workers, choline deficiencyExpand
  • 6
The effects of a single dose of morphine on the concentration of substance P‐like immunoreactivity in rat and guinea‐pig brain
  • L. Chahl, J. Chahl
  • Chemistry, Medicine
  • The Journal of pharmacy and pharmacology
  • 1 January 1994
lecithin on the irritative effect. Whether the improved rectal bioavailability of some drugs when using lecithin is related to the rectal mucosa damage is not clear, although van Hoogdalem et a1Expand
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