The selective response of Holotrichia oblita to different plant volatiles (1) By steam distillation and dichloromethane, in the Y-tube olfactometer bioassay, the crude extract from castor-oil plant leaves was obviously attractive to female and male of Holotrichia oblita than cotton, Abutilon theophrasti Medic, control dichloromethane.

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A method and apparatus for water degasification and distillation in an apparatus having a container (10) for a reservoir of water to be degassed and distilled, a boiler (12) adjoining the container and having a feed water conduit (22) connecting the container and boiler, a coiled tube condenser (27) within the container immersed in the water therein, the condenser coil having a vertically disposed longitudinal axis, a second conduit (24) in the boiler connecting the space above the water level therein to the inlet of the condenser so that steam flows from the boiler to the condenser, an outlet (29) on the condenser extending through a container wall for discharging the condensed steam as degassed distilled water, a heater (13) in the boiler for heating the water therein, a motor driven stirrer (101) axially of the coiled tube condenser and an ozone generating device (120) in the boiler for purifying the steam.

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To the flask and Condenser Horizontal and water, and ground magnetic float coat the mouth, steaming water connector and catheter installed, tightened their set screws tight, the rubber hose and gasket sets of quartz heating tube inserted mode of distillation, the fastening nut, the heating tube sign power supply cord into the outlet in the apparatus.

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The high purity of 2-mercapto-β-naphthothiazole was obtained with α-naphthylamine as raw material via reaction of seal glass tube, alkaline extraction, vapor distillation, acidification of acetic acid and ethanol recrystallization.

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The geologists have attached much importance to the particularity of ReOs isotopic system and its application is getting popular. The author sums up and compares several kinds of sample digestion methods for ReOs isotope analysis (NiS fire assay, Carius tube digestion, high pressure asher, leaching, and water disposing), the procedures of separating Os ( conventional distillation, liquid Br2 and CCl4 or CHCl3 extraction, rapid extraction with low blank, minitype distillation) and purifying Os, improved mass spectrometry measurement of Os isotope and its application progress in the earth science research brought along the improved measuring method.

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Continue the distillation for 5 minutes, then remove the heat, and allow the receiving tube to cool to room temperature.

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