Heat lamps

A suitable heating lamp or other heating device. The author has found the 250 watts vertical pattern radiator lamp ( sausage lamp) or, alternatively, the Santon 250 or 500 watts immersion heater f to give excellent results. 

Heating value Heating values Heat insulation Heat lamps Heat of crystallization Heat picture... 

Morin (hydrate) (2, 3,4, 5,7-pentahydroxyfiavone) [480-16-0] M 302.2, m 289-292", pKj 5.3, pKi 8.74. Stirred at room temperature with ten times its weight of absolute EtOH, then left overnight to settle. Filtered, and evaporated under a heat lamp to one-tenth its volume. An equal volume of water was added, and the ppted morin was filtered off, dissolved in the minimum amount of EtOH and again ppted with an equal volume of water. The ppte was filtered, washed with water and dried at 110° for Ih. (Yield ca 2.5%.) [Perkins and Kalkwarf Anal Ghent 28 1989 1956.] Complexes with W and Zr. 

Silane drying Blow excess silane off panel with 30 psi dry, oil-free N2. Place in preheated 220°F (I04 C) circulating air oven for 1 h. Blow excess silane off panel with dry, oil-free Nr. Use heat lamps or other heating sources to maintain 200-220°F (93-104°C) for 1 h. Use appropriate thermocouples to assure temperature and uniformity. The time between silane application and stall of heating should be minimized and no more than 1 hour. 

Prime Prime with appropriate primer. After the surface has cooled to 90°F (32 C), apply primer and cure with heat lamps. 

Removal is often enhaneed through methods sueh as solidifieation, freezing (i.e., iee or dry iee), adsorption or absorption (i.e., powdered lime or kitty litter), or melting with a low-energy heat souree (i.e., hair dryer or heat lamp). 

When you bake in the sun, your body absorbs energy from sunlight. Infrared radiation from a heat lamp in a restaurant keeps food warm until the server delivers the meal to the customer. When a microwave oven cooks food, the food absorbs energy from microwave radiation. Sunlight, infrared light, and microwaves are examples of electromagnetic radiation, which possesses radiant energy, as we discuss in Chapter 7. 

Radiation with long wavelengths falls in the infrared, microwave, or radio frequency regions. Heat lamps make use of infrared radiation, microwave ovens cook with microwave radiation, and radio and television signals are transmitted by radio waves. 

The solid mercuric sulfate is washed with three 100-ml. portions of approximately 40% aqueous sulfuric acid solution (110 ml. of concentrated sulfuric acid mixed with 300 ml. of water). The solid is sucked dry, transferred to an evaporating dish, broken up, and dried in the hood under a heat lamp. 

Occasionally, you may be tempted to dry solid samples in an oven. Don t— unless you are specifically instructed to. I know some students who have decomposed their products in ovens and under heat lamps. With the time they save quickly decomposing their product, they can repeat the entire experiment. 

The solvent evaporation method is especially useful for polymers that can be cast onto the surface of the salt plate. Casting involves dissolving the polymer in an appropriate solvent at an elevated temperature and evaporating the solvent on the salt plate by heating the salt plate on a hot plate or under a heat lamp. 

The filters are dried under a heat lamp, transferred to scintillation vials and counted for radioactivity after addition of 5 ml of scintillation fluid. This is used to estimate the amount of bound radioligand. 

A heat lamp may be used to prevent solidification during distillation. 

The mice are placed under a heat lamp to avoid heat loss and anesthetized with isoflurane see Note 10). 

When the temperature of the bath reaches 140-143°, the heating lamp is turned directly on the U-tube, and the receiver is changed to collect the 2-bornene. 

Under similar conditions, cw-azobenzene could be oxidized to cw-azoxy-benzene. Evidently the only major precaution to be taken in this preparation is the exclusion of ultraviolet light (by carrying the reaction out in a dark room) [24]. Whether this precaution is truly required is open to some doubt since cis-azoxybenzenes were prepared more recently by oxidation while warming with a heating lamp [28]. The isomerization by ultraviolet light is probably an equilibrium process in which equilibrium constants have a pronounced dependence on the chemical constitution of the materials involved. Therefore variations in the observations of the stability of the products are not entirely surprising. 

Ethyl ethoxymethylenecyanoacetate can be prepared in the laboratory from ethyl cyanoacetate and ethyl orthoformate according to the directions of de Bellemont.2 The submitters and checkers used a commercial product, m.p. 45-50°, obtained from Kay-Fries, Inc., New York. The liquefied product is weighed and poured into the dropping funnel. An infrared heating lamp is used to keep it liquid during the addition. 

To a solution of compound 182 (945 mg, 7.5 mmol) [Eq. (15)] and iodomethane (1.4 mL, 22.5 mmol) in 1,2-dimethoxyethane (30 mL) under argon, refluxing over a 500-W heat lamp, Bu3SnH (0.6 mL, 22.3 mmol) was added dropwise over 3 h. After the addition, the mixture was allowed to cool to room temperature, diluted with CH3CN (150 mL), and extracted with light petroleum (5 x 30 mL). The acetonitrile layer was concentrated, and the... 

Melting point capillary tube, 1.5 X 100 mm Oven at 100°C Heat lamp... 

Very efficient reaction occurs when phenyl 1 -thio-/ -D-glucopyranoside and -D-galactopyranoside tetrabenzoates (94 and 95) are treated in refluxing carbon tetrachloride with JV-bromosuccinimide under a heat lamp, and, within 15 minutes, they are converted into products from which the enones 96 and 97 have been obtained by direct crystallization in 76 and 83% yield, respectively (see Scheme 15).20... 

Metastasis 2. Medium for tumor cell culture, e.g., Minimal Essential Medium Eagle (MEM) (Gibco, Invitrogen) 3. 10X Trypsin/EDTA dilute to final concentration lx with PBS (Sigma-Aldrich) 4. Standardized tumor cell suspension, radiolabeled 5. Hank s balanced salt solution, Ca++ and Mg++ free (CMF-HBSS) (Sigma-Aldrich, H-2387) 6. Trypan blue stain 7. Mouse vice 8. Heat lamps... 

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