Abstract: A protractor is disclosed that reduces the time to teach students how to measure and understand angles, and significantly improves overall student comprehension of angles. The protractor comprises two generally flat members each having a straight edge portion radial to a pivot point to which the members are rotatably attached such that the straight edges define an open sector area having an angle formed by the two edges, one member having angle indicia on a semi-circular portion thereof, and the other member having an indicator portion that intersects the angle indicia to enable the angle defined by the two straight edges to be measured. The protractor offers a significant increase in convenience in measuring and drawing angles.

Abstract: A self-doped conducting polymer having along its backbone a .pi.-electron conjugated system which comprises a plurality of monomer units, between about 0.01 and 100 mole % of the units having covalently linked thereto at least one Bronsted acid group. The conductive zwitterionic polymer is also provided, as are monomers useful in the preparation of the polymer and electrodes comprising the polymer.

Abstract: A kit of contoured foam pads (FIGS. 3 and 3a) is provided for attachment to an existing garment form (FIGS. 1 and 4) with double-sided adhesive tape (42), in order to duplicate the shape of a person to be fitted by a dressmaker or tailor. The pads are further secured by a fabric cover of stretch material (38 and 62) thus supporting the size and shape of the garment form (FIGS. 2 and 4) to accommodate many different individuals. The pliable foam pads are held to the form by the elastic cover (38 and 62) stretched over the form. The cover is then secured at the bottom with a drawstring (40). Each pad, labeled according to its appropriate position (56), enlarges any or all anatomical parts of the garment form (FIGS. 2, 4 and 5). For even further flexibility, smaller pieces of foam (36) can be attached to any of the individual foam pads to enlarge selected sections of the form. The flexibility in the sizing of an existing garment form greatly broadens the use of conventional garment forms.

Abstract: The present invention relates to an apparatus and a method for the determination of the concentration level of a particulate analyte in a moving liquid, said apparatus comprising:valve means for diverting a quantifiable portion of the liquid through an analysis chamber, wherein the chamber itself comprises:valve inlet means for introducing the liquid to the analysis chamber,concentrating means for accumulating the particulate analyte present in the liquid,valve outlet means for the removing liquid having a reduced concentration of analyte;valve inlet means for introducing an anhydrous gas into said analysis chamber,valve outlet means for removing the inert gas and a major portion of the liquid present in analysis chamber,electromagnetic radiation generating means positioned in non contacting proximity to said concentration means,detecting means for detecting an electromagnetic radiation parameter of the analyte located in non-contacting proximity to said concentration means; andflow sensor means for measuring

Abstract: The present invention relates to a group of organic chelators whose affinity for calcium ion in solution is decreased by electromagnetic radiation. Specifically, the chelators are related to fura-2 and utilize the addition of an azide group to the 3-position of the benzofuran ring of a fura-2 type structure. Photolysis of the azide group causes the calcium ion affinity to decrease 100 to 1000 fold. These chelators when incorporated into rat fibroblasts either by microinjection or by incubation as the membrane-permeable, enzymatically-labile esters and flash-photolyzed cause large increases in intracellular free calcium ion. These chelators are used to generate controlled fast elevation of intracellular free calcium ion concentration to mimic or modulate a number of important cellular responses, especially in nerve or muscle.

Abstract: An improved electrode design for solid state devices, fuel cells, sensors and the like is made by incorporation of a porous layer of the electrolyte material over the dense electrolyte, and by the introduction of an electrocatalyst into the porous layer such that it is also continuous. The resulting electrode structure of dense electrolyte/porous electrolyte, continuous electrocatalyst and gas phase are present creating an enhanced three phase (TPB) length over that of conventional designs. The design allows for improved performance at lower temperatures which means a lower cost of materials, fewer problems from oxidation and corrosion, and improved durability. In a preferred embodiment, the dense electrolyte and porous electrolyte is yttria-stabilized zirconia (YSZ), and the electrocatalyst is selected from silver; platinum; rhodium; palladium; iridium; ruthenium;(La.sub.1-x Sr.sub.x) MnO.sub.3, wherein x is 0 to 0.5;(La.sub.1-x Sr.sub.x) CoO.sub.3, wherein x is 0 to 0.6;(La.sub.1-x Sr.sub.x)(Co.sub.1-y Fe.

Abstract: The present invention relates to one or more polypeptides having useful biological activity in a mammal, which comprise:a polypeptide related to bradykinin of four to ten amino acid residues wherein one or more specific amino acids in the polypeptide chain are replaced with achiral N-benzylglycine. These polypeptide analogues have useful potent agonist or antagonist pharmacological properties depending upon the structure. A preferred polypeptide is (N-benzylglycine.sup.7)-bradykinin.

Abstract: The present invention provides a predictive method for selecting organic compounds having useful pharmaceutical activity in a mammal. The method uses volume areas of similar molecules. When specific substituents of the test compound file predetermined volumes, the compound is subject to a binding assay. Only when the binding assay is positive, is the experimental compound recommended for further pharmaceutical evaluation. Example compounds are derivatives of 4-substituted 2,6-diiodophenols of the structure: ##STR1## where R.sup.1 and R.sup.2 are defined as aliphatic or substituted aliphatic moieties or aromatic or substituted aromatic moieties. Useful structures are described. The compounds have useful pharmaceutical properties to treat conditions in a human being, including hyperthyroidism, angina pectoris, arrythmia, and the like.

Abstract: A barrier system which provides a new and unique approach to separating traffic and provides a safe, convenient and effective means of controlling traffic. Segmented continuous interlocking barriers embedded in the roadway rise out of the roadway to prevent head-on collisions between opposing lanes of traffic to aid in the prevention of serious accidents and loss of life on any undivided roadway on a suspension or truss bridge. All electro-mechanical mechanisms are controlled by PLC programmable controllers, automation software and a data processor control system link with mobile end-system wireless link compatibles in a multi-capability environment to perform the electro-mechanical tasks in altering traffic lane configurations. A set performance schedule is set up according to traffic flow by user in the alternating of its mechanical barrier devices in sequential order, with means from pneumatic air cylinders.

Abstract: More effectively controlled expression of DNA sequences in coding desired heterologous proteins is achieved in differentiated eucaryotic cells by methods of this invention. Disclosed herein are control modules derived from selectively expressed genes of eucaryotic cells, such as, for example, insulin and chymotrypsin genes. These control elements contain cis-acting sequences which are responsive to indigenous trans-acting substances in the differentiated cell, which substances control the expression of the gene. Such cis-acting elements occur within the promoter region of such selectively expressed genes, and also in the five prime flanking region of the coding sequence in a position upstream of the promoter. These upstream enhancer sequences may be located using the methods disclosed herein, and ligated into differentiative expression modules for production of desired heterologous proteins.

Abstract: A pipette tip rack loader is disclosed that will load a flat of pipette tips into a rack for use on a laboratory bench. The flat for the pipette tips is substantially the same dimensions as the top surface of the tip rack to be loaded, and has an identical hole pattern so that the ends of the tips loaded in the flat can be positioned one-to-one in the holes of the tip rack. The loader consists of an upper platform that holds the flat and a lower platform or base that holds the unloaded tip rack. The upper platform is biased in a first position sufficiently high enough above the tip rack that the tips do not hit the rack. The upper platform can be depressed so that the tips in the flat thread into the tip rack holes. As the upper platform nears the tip rack, the flat is released from the upper platform to rest on the tip rack with the tips registered in the rack. Several flats with tips may be positioned in the loader with tips in the upper flats.

Abstract: The present invention relates to novel, powerful reducing agents, lithium aminoborohydrides which are prepared by addition of BH.sub.3 .cndot.THF to the corresponding dialkylamine at 25.degree. C. to give the intermediate amineborane complex. Subsequent deprotonation by strong base, e.g. n-BuLi, yields the aminoborohydride quantitatively. Lithium aminoborohydrides are powerful reducing agents, comparable in strength to lithium aluminum hydride. The activity is determined by the dialkylamine. Lithium pyrrolidinoborohydride has unique activity and selectivity in its reducing properties. Esters, lactones and anhydrides are reduced cleanly at 25.degree. C. to give the corresponding alcohols, while carboxylic acids are not reduced. Test reductions show that lithium pyrrolidinoborohydride is also capable of reducing a wide range of functional groups including amides, epoxides, oximes, nitriles and halides.

Abstract: The present invention relates to an improved method to produce an electrical storage device having useful characteristics such as higher charge density, small volume, long-term reliable charge/discharge cycles, low leakage current, and the like. The dry preunit has useful properties in that it can be stored for long periods prior to contact with a non-aqueous or aqueous electrolyte. When the electrode surfaces are contacted with a non-aqueous or aqueous electrolyte, the novel capacitors produced are useful as a portable power supply in applications such as in defibrillator, electrical vehicles, radiotelephones etc.

Abstract: A garment and method for its use, a covering such as a poncho or an anorak, designed to enable a backpacker to don the covering while he or she is wearing a backpack. The garment incorporates a belt with an integrally-formed pouch where the covering garment is stored. The pouch is worn about the waist of the user with the pouch at the front. Where the garment is an anorak, it is open in the back. To use, the user unfolds the garment from the pouch and dons the garment from the rear. There is a slide fastener in the back of the unfurled garment, allowing the user to close the back of the garment after it has covered the backpack.

Abstract: A clamp jaw extender is adapted to be releasably attached to each jaw of a standard bar clamp to substantially increase the clamp depth thereof. The extender comprises a clamping member having a mounting slot defined on a back side thereof for detachably mounting the clamping member on a jaw of the standard bar clamp and a pressure pad on the upper end and frontal side of the clamping member. A pair of laterally spaced mounting flanges are formed on a lower end of the clamping member to define a mounting slot. A pair of upper and lower bearing and guide rollers are preferably mounted in the slot for slidably mounting the clamping member on a slide bar of the standard bar clamp to convert the bar clamp to a deep jaw bar clamp.

Abstract: Propargylamine derivatives having the general formula: ##STR1## wherein R is a hydrogen atom, an unsubstituted phenyl group or a phenyl group substituted with halogen, trifluoromethyl, loweralkoxy, nitro, cyano, amido or N,N-diloweralkylamido, R.sub.1, R.sub.2 or R.sub.3 are the same or different and each represent a hydrogen atom or a loweralkyl group, R.sub.4 is a hydrogen atom or a loweralkyl, benzyl, phenethyl or furyl group, or R.sub.3 and R.sub.4 together with the nitrogen atom to which they are attached form a piperidinyl group, and their pharmaceutically acceptable acid addition salts, have been found to be useful in the treatment of anxiety, psychotic states and aggressive behavior in affected animals.

Abstract: Novel ingestible polymeric phosphonium salts have the formula: ##STR1## wherein P' represents a cross-linked and non-digestible polymer backbone; R is a lower alkyl radical; X.sup.- is a pharmaceutically acceptable anion; n, n.sub.1 and n.sub.2 are, independently, integers varying from 0 to 6 inclusive, with the proviso that when m.sub.1 .gtoreq.1, n.sub.2 .gtoreq.1; and o.sub.1, o.sub.2, p.sub.1 p.sub.2, q.sub.1 and q.sub.2 are, independently, integers varying from 1 to 6 inclusive. The polymeric phosphonium salts of the invention are highly efficient sorbents for bile acids and salts and can thus be used for reducing hypercholesterolemia in affected humans.

Abstract: A board game includes a board divided into a multiplicity of contiguous, equally-sized, equilateral triangles, half of them colored as to be visually distinguishable from the other half, and arranged in an alternated sequence of colors, and a plurality of playing members associated therewith, the ratio of playing members to triangles being 12 to 54, there being two visually distinguishable sets of such members. Each playing member is of four-sided configuration, each side defining a triangle congruent with each board triangle. The movement of each member takes place by rotating that piece about a board triangle leg until the piece is seated on a board triangle contiguous with the first-mentioned board triangle.

Abstract: Mthods and apparatus for the extraction of a ligand such as molecular oxygen from a first fluid environment and for release of a ligand such as molecular oxygen, as well as ligand carrier compounds therefore comprising linear, pentadentate polyalkylamines and transition metal ions. The carrier compounds have the general formula: ##STR1## where, each of R.sub.1 and R.sub.2 is independently an organic group including a sulfur, an oxygen or a nitrogen coordinated to M;each of m, n. o, and p is 1, 2 3, or 4;X is selected from the group consisting of 2,6-pyridyl, 2,6-piperidyl, 2,5pyrrolyl, 2,4-imidazolyl, substituted heterocyclic amines, --O--, --S-- >P--R.sub.3, and >N--R.sub.3 where R.sub.3 is hydrogen, lower alkyl, or aralkyl; andM is a transition metal ion.