Abstract: An optical-chemical sensor which is suitable for the continuous and discontinuous determination by luminescence optics of the concentration of chloride in an aqueous sample and which comprises a luminescence indicator (I) and a polymer (H) carrying the luminescence indicator (I) is characterized in that the luminescence indicator (I) is a non-lipophile acridine or bisacridine compound and the polymer (H) is a linear-chain hydrophile polymer soluble in an organic solvent, whereby it is possible to excite the sensor by commercially available LEDs, to manufacture very large numbers thereof at a moderate cost and in a reproducible way and, preferably, to use it for the determination of physiological chloride concentrations and the sensor furthermore has a wide dynamic measuring range for the determination of chloride; a high sensitivity, stability and reproducibility; a high selectivity for chloride; and a low pH cross-sensitivity.

Abstract: Modified thermostable DNA polymerases having enhanced efficiency for incorporating unconventional nucleotides such as those labeled with fluorescein family dyes are advantageous in many in vitro DNA synthesis applications. Such enzymes are particularly useful for use in chain termination nucleic acid sequencing protocols, as are native forms of such enzymes. Genes encoding the modified enzymes and methods for their production and use offer cost and efficiency advantages for DNA sequencing.

Abstract: A system for quantitative determination of the local distribution of a quantity to be measured, comprising a planar sensor film, which is applied to a measuring surface, such as the surface of a body organ, a skin area or a cell culture, and whose diffusion properties regarding a parameter to be determined are known. The sensor film contains a luminescent indicator responding to the parameter to be determined with a change of at least one optical property. The system further comprises an excitation and detection unit including means for supplying excitation radiation of at least one wavelength, an imaging detection means, preferably a CCD camera, and an evaluation unit processing the image information obtained from the excitation and detection unit. Further provided is an applicator tube to be placed on the measuring surface, whose rim facing the measuring surface is in elastic contact with the sensor film and is impervious to external radiation interfering with the detection means.

Abstract: The present invention concerns the use of beta-carboline derivatives of formula I bearing at least a free or esterified carboxylic group on the piperidine ring, for the preparation of pharmaceutical compositions having antimetastatic properties.

Abstract: The present invention concerns novel compounds represented by the Formula: ##STR1## wherein: A is R.sup.1.sub.q (R.sup.3 R.sup.60 N).sub.m (Z)(NR.sup.2).sub.n ; m and q are each 0 or 1, with the proviso that when q is 1, m is 0 and when q is 0, m is 1; Z is C.dbd.O or SO.sub.2 ; n is 1 with the proviso that, when Z is C.dbd.O, m is 1; X is --NH--, --CH.sub.2 --, or --OCH.sub.2 --; Y is [2-imidazoline, 2-oxazolin] 2-thiazoline, [or 4-imidazole] R.sup.1 is H, lower alkyl, or phenyl, with the proviso that, when R.sup.1 is H, m is 1; R.sup.2, R.sup.3, R.sup.60 are each independently H, lower alkyl, or phenyl; R.sup.4, R.sup.5, R.sup.6, and R.sup.7 are each independently hydrogen, lower alkyl, --CF.sub.3, lower alkoxy, halogen, phenyl, lower alkeny, hydroxyl, lower alkylsulfonamido, or lower cycloalkyl, wherein R.sup.2 and R.sup.

Abstract: A process for producing 2-?3(S)-amino-2-(R)-hydroxyl-4-phenyl butyl!-N-tert,butyl decahydro-(4aS,8aS)-isoquinoline-e(S)-carboxamide of the formula (I) via 3(S)-?lower alkoxy carbonyl amino, phenoxy carbonyl amino or benzyl oxycarbonyl amino!-2-hydroxy-4-phenyl butyric acid and process for producing said acid.