Abstract: A system and method are provided for trading multiple tradeable objects. One example method includes displaying at least one combined quantity indicator representing a combined quantity associated with at least two tradeable objects, detecting an input associated with an order for a predetermined order quantity in relation to one of the combined quantity indicators, and allocating the order quantity between the at least two tradeable objects using at least one quantity allocation rule. In one example embodiment, a plurality of quantity allocation rules can be user-configurable, and different rules can be defined and applied in relation to different order types.

Abstract: A system and method are provided for trading multiple tradeable objects. One example method includes displaying at least one combined quantity indicator representing a combined quantity associated with at least two tradeable objects, detecting an input associated with an order for a predetermined order quantity in relation to one of the combined quantity indicators, and allocating the order quantity between the at least two tradeable objects using at least one quantity allocation rule. In one example embodiment, a plurality of quantity allocation rules can be user-configurable, and different rules can be defined and applied in relation to different order types.

Abstract: A system and method are provided for trading multiple tradeable objects. One example method includes displaying at least one combined quantity indicator representing a combined quantity associated with at least two tradeable objects, detecting an input associated with an order for a predetermined order quantity in relation to one of the combined quantity indicators, and allocating the order quantity between the at least two tradeable objects using at least one quantity allocation rule. In one example embodiment, a plurality of quantity allocation rules can be user-configurable, and different rules can be defined and applied in relation to different order types.

Abstract: A system and method are provided for trading multiple tradeable objects. One example method includes displaying at least one combined quantity indicator representing a combined quantity associated with at least two tradeable objects, detecting an input associated with an order for a predetermined order quantity in relation to one of the combined quantity indicators, and allocating the order quantity between the at least two tradeable objects using at least one quantity allocation rule. In one example embodiment, a plurality of quantity allocation rules can be user-configurable, and different rules can be defined and applied in relation to different order types.

Abstract: Process for the production of TMEDA in high yield by reducing 2,3-dimethyl-2,3-dinitrobutane with hydrogen in the presence of a chromium promoted Raney cobalt catalyst. A solution of 2,3-dimethyl-2,3-dinitrobutane in a suitable solvent is fed to a reactor while avoiding the accumulation of 2,3-dimethyl-2,3-dinitrobutane in the reaction medium, such as by feeding it at a rate no greater than its rate of reaction with hydrogen. In a preferred embodiment, the resulting TMEDA is recovered by converting it to an amine salt by sparging carbon dioxide through the solution.

Abstract: A laboratory fume hood has a cabinet structure, which defines an enclosed work area, and a primary exhaust assembly. The primary exhaust assembly serves to contain fumes within the work area and then exhaust the fumes. It effects a flow of a volume of air through the work area and in many instances is designed to maintain a constant face velocity across an access opening in the front wall of the fume hood. A secondary collection device is disposed within the fume hood for removing a concentration of fumes from a small portion of the work area. The secondary collection device includes a collector head disposed in the work area and a conduit connected to the primary exhaust assembly. A portion of the air flowing through the work area is directed to the primary exhaust assembly through the secondary collection device. The volume of air passing through the secondary device should not be high enough to adversely affect the containment capabilities of the primary exhaust assembly.

Abstract: A method of stabilizing nitriles, and in particular iminodiacetonitrile (IDAN), ethylendiamine-triacetonitrile (EDTN), and especially nitrilotriacetonitrile (NTAN). The present invention also encompasses the resulting stabilized nitrile. The method of the present invention comprises contacting the nitrile with a mixture of silica and alumina, zeolites or glass.

Abstract: A process for the purification of bis(difluoromethyl)ether. Bis(difluoromethyl)ether is exposed to molecular sieves in order to reduce or completely remove impurities. In a further embodiment, the present invention optionally includes means for preferentially inhibiting the formation of CF.sub.2 HOCCl.sub.3 in the formation of bis(difluoromethyl)ether prior to exposing the bis(difluoromethyl)ether to the molecular sieves.

Abstract: The synthesis of fluorinated dimethyl ethers of the formula CF.sub.2 HOCCl.sub.x F.sub.y H.sub.3-(x+y) wherein x is 0, 1 or 2; y is 1, 2 or 3; and wherein (x+y) is 1, 2 or 3. The process involves chlorination of methyl difluoromethyl ether in the presence of a solvent to form a chlorinated reaction product of the formula CF.sub.2 HOCH.sub.3-z Cl.sub.z wherein z is 1, 2 or 3. The process may also be carried out in the presence of oxygen in order to inhibit the formation of CF.sub.2 HOCCl.sub.3. The resulting compound(s) is then fluorinated with HF before or after separation, to give a fluorinated reaction product including the aforementioned fluorinated dimethyl ethers.

Abstract: Improved deposition of a cosmetic agent, e.g. a sunscreen, from a cosmetic composition such as a hair or body shampoo is achieved by incorporating the cosmetic agent in the composition in combination with, e.g. carried on the surface of or within pores of, latex particles of a polymeric material having a particle size of less than about 1 micron.

Abstract: A novel process for synthesizing difluoromethyl methyl ether for use as regrigerants and blowing agents, etc. is hereby disclosed. This process involves (1) feeding chlorodifluoromethane at a rate from about 0.5 to 5 grams of feed gas per gram of solution per minute through a sodium methoxide in methanol or basic ion exchange slurry in methanol; (2) removing the gaseous product and the unreacted chlorodifluoromethane continuously; and (3) separating difluoromethyl ether from the unreacted chlorodifluoromethane.

Abstract: The synthesis of fluorinated dimethyl ethers of the formula CF.sub.2 HOCCl.sub.x F.sub.y H.sub.3-(x+y) wherein x is 0, 1 or 2; y is 1, 2 or 3; and wherein (x+y) is 1, 2 or 3. The process involves chlorination of methyl difluoromethyl ether in the presence of oxygen to form a chlorinated reaction product of the formula CF.sub.2 HOCH.sub.3-z Cl.sub.z wherein z is 1 or 2, and wherein the formation of CF.sub.2 HOCCl.sub.3 is inhibited. The resulting compound(s) is then fluorinated with HF before or after separation, to give a fluorinated reaction product including the aforementioned fluorinated dimethyl ethers.

Abstract: A novel process is disclosed for the synthesis of fluorinated dimethyl ethers of the formula CF.sub.2 HOCCl.sub.x F.sub.y H.sub.3-(x+y) wherein x is 0, 1 or 2; y is 1, 2 or 3; and wherein the total x+y is 1, 2 or 3. The process involves chlorination of methyl difluoromethyl ether to form a chlorinated reaction product, including at least one compound of the formula CF.sub.2 HOCH.sub.3-z Cl.sub.z, wherein z is 1, 2 or 3, which compound is then fluorinated with HF and/or an antimony salt and with or without separation from the chlorinated reaction product, to give a fluorinated reaction product including the aforementioned fluorinated dimethyl ethers.

Abstract: A novel process is disclosed for the synthesis of fluorinated dimethyl ethers of the formula CF.sub.2 HOCCl.sub.X F.sub.Y H.sub.3-(X+Y) wherein X and Y are each independently 0, 1, 2 or 3 and wherein the total X+Y is 2 or 3. The process involves chlorination of methyl difluoromethyl ether to form a chlorinated reaction product, including at least one compound of the formula CF.sub.2 HOCH.sub.3-z Cl.sub.z, wherein z is 1, 2 or 3, which compound is then fluorinated, with or without separation from the chlorinated reaction product, to give a fluorinated reaction product including the aforementioned fluorinated dimethyl ethers.

Abstract: Polyamines are prepared via the batchwise hydrogenation of polynitriles by the gradual addition of the polynitrile into a fed-batch reactor which contains chromium promoted Raney.RTM. cobalt catalyst. The hydrogenation optionally is conducted in the presence of anhydrous ammonia. The polyamine product having amino groups which corresponds to the nitrile of the polynitrile is economically obtained in high selectivity and yield as the dominant product.

Abstract: A water-soluble luminescent compound having repeating units of the formula: ##STR1## The product, which is a polymer having repeating units comprising diazo-linked luminol and hydroxyindole, is referred to as diazoluminomelanin (DALM), since one of the precursors to this product, 3-amino-L-tyrosine (3AT) is closely related to the biological substrates which are converted into melanin.Also provided is a method for preparing DALM which comprises reacting 3AT with an alkali metal nitrite, and reacting the resulting diazonium salt with luminol.DALM can be used for chemiluminescent immunoassays for biological and chemical agents; in radiofrequency and ionizing radiation dosimeters; and for RNA/DNA hybridization assays for viruses and genetic detection.

Abstract: A chlorine-free refrigerant comprised of bis (difluoromethyl)ether; CHF.sub.2 OCHF.sub.2. The refrigerant may be used alone or in combination with other refrigerants. The bis (difluoromethyl) ether refrigerant is environmentally safe, non toxic, non flammable and has the desired physical, chemical and thermodynamic properties necessary for a refrigerant.

Abstract: Given limitations on potential locations, weight sizes and amount of weights all possible applied unbalance magnitudes and angles are calculated after determining the initial unbalance magnitude and angle of the rotor this result is vector summed with all possible applied unbalances. The lowest resultant magnitude is determined, independent of the angle. The corresponding weight combination produces the lowest possible residual unbalance within the constraints.

Abstract: A multivalent pneumococcal vaccine consisting of immunogenic amounts of purified pneumococcal capsular polysaccharide (substantially absent "C" polysaccharide) of pneumococcal types (Danish designation) 1, 2, 3, 4, 5, 6B, 7F, 8, 9N, 9V, 10A, 11A, 12F, 14, 15B, 17F, 18C, 19A, 19F, 20, 22F, 23F and 33F, and from none to one or both of 6A and 25, and combinations thereof and methods of purifying pneumococcal capsular polysaccharide types 3, 5, 9V, 10A, 11A, 15B, 17F, 19A, 22F and 33F.

Abstract: This disclosure relates to a new target game and method for playing the same in which a relatively flat target board and relatively flat projectiles thrown at the target board exhibit magnetic attraction for one another to enable the projectiles to adhere to the target board. A second projectile thrown at the target board would be capable of adhering to the target board even when in at least partial overlapping relationship with a first projectile already adhering to the target board. Game rules may be developed to utilize the unlimited combinations of projectile adherence to different locations on the target board taken in conjunction with the overlapping adherence of one or more projectiles to the target board.