Abstract: A fabric includes mutually transverse thread systems, with at least one of the thread systems including a differential shrinkage yarn C. The shrinkage yarn C has at least one effect component A that irreversibly elongates itself upon heat treatment, and at least one shrinkage component B that shortens itself upon heat treatment. The components A and B are bound together by nodes, wherein the number (y) of nodes per meter in the yarn C is predetermined as a function of the yarn count (x) of the transverse thread system so that the number (y) of nodes exceeds a minimum value and increases proportionally above the minimum value as a function of the yarn count (x).

Abstract: The invention relates to an oligonucleotide which serves as a nucleic acid probe comprising a loop section with a loop sequence complementary to the target sequence of the nucleic acid molecule; a stem section arranged on both ends of the loop section for hybridizing with each other for closing the oligonucleotides thereby forming a loop, and wherein one of the stem sections is labeled with fluorescent color, such that when the loop section hybridizes with the target sequence of the nucleic acid, the oligonucleotide opens and the distance between the fluorophore and a quencher nuleoside increases which thereby prevents quenching of the fluorescence and the strength of fluorescence when measured indicates the presence of the nucleic acid with the target sequence.

Abstract: The invention relates to a woven fabric, in which at least one of the intersecting yarn systems contains a differential shrinking yarn (C), which consists of at least one decorative component (A) that elongates irreversibly during thermal treatment and at least one shrinking component (B), which contracts during thermal treatment. The components (A) and (B) are interconnected by means of entangled knots. The number of entangled knots per metre of yarn (C) in the finished woven fabric corresponds to the number of yarns in the intersecting yarn system. The woven fabric is produced in such a way that the components of the differential shrinking yarn are interconnected by air entanglement and in the finished woven fabric contain Ymin>98+0.7x entagled knots. After the entanglement process, the unsized yarns are interwoven as a warp with a weft in such a way that the number of weft yarns in the finished woven fabric is (X). The woven fabric obtained in this manner is subsequently thermally treated.

Abstract: The invention relates to a device and a method for the detection, especially on line detection, of an amplification of a DNA and/or RNA sequence in a sample. The amplification of the DNA and/or RNA sequence in the sample is evaluated on the basis of scattered-light signal of the sample.

Abstract: The invention relates to an oligonucleotide which serves as a nucleic acid probe comprising a loop section with a loop sequence complementary to the target sequence of the nucleic acid molecule; a stem section arranged on both ends of the loop section for hybridizing with each other for closing the oligonucleotides thereby forming a loop, and wherein one of the stem sections is labeled with fluorescent color, such that when the loop section hybridizes with the target sequence of the nucleic acid, the oligonucleotide opens and the distance between the fluorophore and a quencher nuleoside increases which thereby prevents quenching of the fluorescence and the strength of fluorescence when measured indicates the presence of the nucleic acid with the target sequence.

Abstract: In order to carry out optical detection and identification of individual tumor markers in undiluted blood plasma, said tumor markers are marked with fluorescent dyes which are characterized by specific fluorescent lifetimes ranging from 0.5 to 6. The blood plasma is exposed to pulsed diode laser radiation emitted in the 630 to 670 nm wavelength range. The emission wavelengths of the dyes are selected in such a way that they are 10 to 60 nm longer than the wavelength of the diode laser. Blood plasma decay curves are detected using time-correlated single photon counts. Said curves are described by a bi-exponential model wherein it is assumed that a fixed fluorescent lifetime for blood plasma emission is 300 ps and that the marked tumor markers have a variable fluorescent lifetime. The relative amount of fluorescent photons in the marked tumors is determined in relation to the overall number of photons detected. If this value exceeds 0.3, a tumor marker is present in the observed volume.

Abstract: An extended fibre point (1) is coated with photbiotin and irradiated with U.V. light, causing the photobiotin to bind with the fibre pint. The fibre point is then brounght into contact with streptavidin and submerged in a solution containing dyed copies of the DNA molecule to be sequenced. Biotin is also bonded to the 5′ end of the dyed DNA molecules (4A). the biotin coupled to individual DNA molecules binds with the streptavidin at the fibre point. Light is coupled into the fibre to detect the thus obtained bonds. The evanescent field of said light excites a dyed DNA molecule to emit fluorescent light as soon as it binds with the fibre point. When a bond is deteccted, the fibre is immediately remvoded from the solution, and the fibre point is inserted into a microcapillary (5). The microcapillary is filled with a buffer solution containing exonucleases which decompose the DNA colecule base after base.

Abstract: What is disclosed is a method and a system for (trace) gas analysis, specifically NH.sub.3 analysis in flue gases exhausted from power plants or in industrial waste gases. In this method and system, a laser is reversed between two of its intrinsic resonance lines whereof one wavelength corresponds to an absorption maximum and the other corresponds to an absorption minimum of the gas to be detected. The extinction E and thus the concentration of the gas under analysis is derived from the ratio of the values of intensity attenuation at the two wavelengths.

Abstract: Interlacing means are provided for the interlacing of multifilament yarns exhibiting a yarn channel. At given distances from the entrance and exit openings forming the yarn channel, yarn guides are so arranged that, with the supply of compressed air shut off, the yarn is laid onto the yarn channel so that it extends parallel to its longitudinal direction, and that the straight yarn sections, which are located between the entrance and exit openings of the yarn channel and the yarn guides, are inclined at acute angles to portions of the geometric longitudinal axis of the yarn channel. Furthermore, the blow angle of the blow nozzle is smaller than 90.degree.. The length of the yarn channel equals for smooth yarns maximally 40 mm and for texturized yarns maximally 30 mm. There results exceptionally high yarn advance speeds and a particularly good vortexing of the yarn.

Abstract: Atomic hydrogen for chemical reaction is produced in relatively high concentrations by the combustion of molecular hydrogen with a substoichiometric quantity of oxygen. The chemical reactant is supplied at the point of the development of the atomic hydrogen. Combustion is effected at pressures between 10 mbar and 1.5 bar, with a mole ratio of molecular hydrogen to molecular oxygen of 2.3 to 5.0.

Abstract: A method of preparing compounds having at least one olefinic double bond, ich method comprises irradiating the corresponding saturated halogenated compound in gaseous form, with pulsed coherent light or incoherent light, adjusting the wavelength of the irradiated light and the pressure and temperature conditions so that a captured cross-section of 10.sup.-15 to 10.sup.-25 cm.sup.2 per molecule results, to split off hydrogen halide from said corresponding saturated compound yielding said olefinic compound.