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At least 181 records · Page 10Linked to original sources
PubMed1988

Effects of yellow filter glasses on the results of photopic and scotopic photometry.

I measured the luminosity of a white surface with seven different yellow filter glasses and a photometer with two different sensitivities, which resembled the photopic and scotopic sensitivity of a Commission Internationale d'Eclairage standard observer. When measured with filters GG 400, GG 420, GG 435, and GG 455, there was a small and almost equal reduction in the relative photopic and scotopic luminosities. Measured with filters GG 475, GG 495, and OG 515, there was a more marked reduction in the scotopic luminosities than in the photopic luminosities.

Adaptation, Physiological↗
PubMed1977

[Determination of urinary alpha-keto-gamma-methylthiobutyric acid in hypermethionemia by use of gas chromatography and flame photometry (author's transl)].

In this paper we describe the determination of urinary alpha-keto-gamma-methylthiobutyric acid (ACMTB) by the use of gas chromatography of its quinoxalinol derivative and specific detection of sulphur with a flame photometric detector. Using these techniques, it was possible to study the urinary elimination of this secondary metabolite of methionine in normal children, homocystinurics and in one case of hypermethioninemia. The excretion of ACMTB is normally very weak and is strongly increased when the principal pathway of methionine is blocked.

Amino Acid Metabolism, Inborn Errors↗
PubMedDate not supplied

3D reconstruction of gastric surface using endoscopic 3 source photometry.

Extraction and recognition of three-dimensional (3D) shape information of gastric surface become increasingly important in the field of gastric diagnosis. But there is no practical method that can extract the 3D shape information of gastric surface. For obtaining this 3D information, we developed a new photometric method that can be used in TV endoscope, and evaluated the proposed method theoretically and experimentally. As the results of simulation and experiment, it could be concluded that the proposed method is effective for 3D reconstruction of gastric surface.

Computer Graphics↗