Abstract: The present invention relates to a process for recovering subliming substances, which deposit in the form of crystals, from a subliming substance-containing gas by combining a cooling operation for lowering the temperature of collecting tubes for the deposition of crystals below the temperature at which the crystals deposit with a heating operation for heightening the temperature of the collecting tubes above the temperature at which the crystals deposit. A subliming substance is continuously recovered in the form of crystals at a high ratio without suffering the recovered crystals from developing a color.

Abstract: A hand held refrigeration fluid leak detector for observing and detecting optical fluorescence resulting from optical excitation of the leaking refrigeration fluid provides single hand operation for a user while holding the main body of the detector with either one of two hands. The flexible stalk is coupled to the main body and to a head containing an LED light source which provides spectral emissions in the UV to blue range. In one embodiment, the hand held detector includes a gas detector.

Abstract: The present invention relates to a system and method for increasing the cognitive function in a fetus. The system transmits a pattern of sonic variations to the fetus. The pattern of sonic variations is formed of a plurality of sequences of tones in which each sequence is repeated at a predetermined tempo. Each sequence of tones is selected to be transmitted to the fetus at a predetermined time during the term of the pregnancy. Preferably, each subsequent sequence of tones is selected to be repeated at increasing tempo during the term of the pregnancy, thereby providing a progressive pattern of sonic variations. A similar system and method can be used for improving the cognitive function of a premature baby. In addition, the present invention relates to a system and method for altering the cognitive function in a postnatal human by transmitting aurally or through bone conduction a progressive pattern of sonic variations or a regressive pattern of sonic variations to the wearer of the system.

Abstract: A method of producing highly purified acrylic acid in a high yield is provided. A method of producing acrylic acid including the steps of an oxidation step, an absorption step, a distillation step, a crystallization step, and a dimer decomposition step.

Abstract: The invention includes modified dihydroflavonol 4-reductase (DFR) nucleic acids encoding the modified DFR that has altered amino acid sequences at the substrate specificity determining region. The property of the modified DFR is characterized by its ability to reduce dihydrokaempferol (DHK) preferentially over dihydroquercetin (DHQ), and dihydromyricetin (DHM). The invention also includes plants having at least one cell expressing the modified DFR. Such plants are characterized by the increased content of pelargonidin-based pigments. The invention also includes vectors comprising at least a portion of the modified DFR nucleic acids. The invention also includes methods using such vectors for producing plants having the increased content of pelargonidin-based pigments.