Intensified drying

A heated material surface causes an intensified drying. 

Acetylene derivatives and substances containing labile halogen The dried chromatograms are homogeneously sprayed with spray solution I, dried in a stream of hot air and sprayed once more with the same solution. The color can then be intensified by spraying with sodium hydroxide solution (10 mol/1) [8]. 

Detection and result The chromatogram was dried in a stream of cold air and then intensively irradiated with UV Ught (A = 365 nm) for 2 min and then immersed in the reagent solution for 1 s. It was finally heated to 120°C for 10 min and after cooling dipped into hquid paraflln — n-hexane (1 2) to intensify and stabilize... 

Crystals suspended in liquors emerging from crystallizers are normally passed to solid-liquid separation devices such as gravity settlers or thickeners that may subsequently feed filters to remove yet more liquid prior to drying. Here the transport processes of particle motion and the flow of fluids through porous media are important in determining equipment size, the operation of which may be intensified by application of a centrifugal force. 

Parlon has been used in pyrotechnic tracer formulations as a color intensifier and binder (Ref 4). It is also employed as a base for rapid drying concrete paints and alkyd enamels (Ref 5) Refs 1) G.F. Bloomfield, JChemSoc 1943, 289 2) Parlon, Properties and Uses , Hercules... 

Detection and result The chromatogram was briefly dried in a stream of cold air then heated for 10 to 30 min at 260 °C in a drying oven. After cooling to room temperature (ca. 15 min) it was dipped in a solution of liquid paraffin — /i-hexane (1 + 2) for 3 s. This stabilized the fluorescence and intensified it by a factor of about 2. 

After heating the chromatogram was immersed in a solution of 2 ml TWton X-100 in 5 ml chloroform plus 35 ml n-hexane in order to intensify the fluorescence and then dried in a stream of cold air. This brought about an appreciable increase in the fluorescence intensity of dienestrol and diethylsilbestrol, while the intensities of the other steroids were only marginally increased (Fig. 1). 

Gilsonite is active as a fluid loss additive because the permeability of cement is reduced. Latex additives also act as fluid loss additives. They also act as bonding aids, gas migration preventers, and matrix intensifiers. They improve the elasticity of the cement and the resistance to corrosive fluids [921]. A styrene-butadiene latex in combination with nonionic and anionic surfactants shows less fluid loss. The styrene-butadiene latex is added in an amount up to 30% by weight of the dry cement. The ratio of styrene to butadiene in the latex is typically 2 1. In addition, a nonionic surfactant (octylphenol ethoxylate and polyethylene oxide) or an anionic surfactant, a copolymer of maleic anhydride, and 2-hydroxypropyl acrylate [719] can be added in amounts up to 2%. 

This technique is used mainly for nonpolar compounds. Typically a small aliquot of soil (10-30 g) is dried by mixing with sodium sulfate prior to extraction. Next, the sample is extracted with a solvent for 10-20 min using a sonicator probe. The choice of solvent depends on the polarity of the parent compound. The ultrasonic power supply converts a 50/60-Hz voltage to high-frequency 20-kHz electric energy that is ultimately converted into mechanical vibrations. The vibrations are intensified by a sonic horn (probe) and thereby disrupt the soil matrix. The residues are released from soil and dissolved in the solvent. 

Following immersion of the glass slides in a 1.0 (w/v) BSA-BSA solution to a depth of 2.1 cm for 30 min at 21°C, the slides were thoroughly rinsed in PBS by dilution/displacement. The slides were then completely immersed in PBS, where they were kept for different lengths of time, i.e., for 1, 2, 4, and 16 hrs. Thereafter, the slides were removed and air-dried and placed on X-ray film between Lanex Intensifying Screens as described above. The supernatants from these diffusion experiments were then concentrated 10 times by evaporation in order to establish their radioactive content. 

For intensifying the drying effect, especially in respect of water, a small basin filled with solid technical potassium hydroxide is laid on the support. Most solvents, with the exception of chloroform, benzene, petrol ether, and carbon bisulphide, are absorbed by this combination. In order to free substances from these four solvents, thin slices of paraffin wax in a shallow basin are placed in the desiccator beside the substance, if its properties are such as to preclude drying in the air. 

Magnesium metal, particularly in the form of powder or small particles, can be ignited at relatively low temperatures. The resulting fires are difficult to extinguish, requiring dry sand or dirt. Water will just accelerate the fire as hydrogen that will intensify the fire is released from the water. 

Open an X-ray film cassette in a dark room illuminated with a weak green or red light. Mount the intensifying screen, place a piece of X-ray film on it, and lay the dry gel or membrane on top. If no radioactive ink or radioactive labeled markers are used, prick a needle through gel and film to allow identification of the exact position of the gel after development. 

Expose the dry gel to X-ray film in a cassette with intensifying screen at -70 °C as described above. 

Screen Preparations, 100 micron thick x-ray intensifying screens were prepared using standard doctor blade coating techniques. The final phosphor volume was 50% when the coatings were dried. In most instances, the phosphor suspensions were prepared using polyvinyl butyral binders with viscosities adjusted to 2000 centipoise for the doctor blade operation and care was taken to avoid convection cell formation (9). A cross section of the screen construction is shown in Figure I. The completed screens consist of polyester (Mylar) base about 10 mil. thick, a 50 micron thick (TI02 (rutile) reflector layer, a 100 micron thick phosphor layer, a 10 micron thick clear cellulose acetate butyrate top protective layer. 

Mineral-filled nylon 6/6 composites. Kaolin (Burgess) was treated with the appropriate silane in a Patterson Kelly 8-qt. twin shell blender with intensifier bar. Treatment levels were 1% active silane. The kaolin was compounded with nylon 6,6 (Vydyne 21x—Monsanto) in a Leistritz twin screw extruder. The compounds were tested in a dry as molded condition in accordance with ASTM D-638 (see Table 5). 

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