Abstract: A coherent, bulked, continuous-filament, heather-dyeable yarn having a more natural, spun, wool-like appearance in carpets consists of lighter dyeing filaments which comprise 20-50% of the total yarn filaments and which are 15-45% longer than the darker dyeing filaments in the yarn. The yarn is produced by overfeeding the lighter dyeing filaments to a greater degree than the darker dyeing ones through a turbulent fluid-jet intermingling zone.

Abstract: In a cationic electrocoating process in which phosphoric acid is used as an acidic ionizing agent for the polymer in the coating composition, and in which excess phosphoric acid build-up in the bath is removed by ultrafiltration, phosphoric acid in the filtrate can be reacted with certain metals to make dissolved dihydrogen metal phosphate salt so that the filtrate can be returned to the electrocoating bath. In the bath, part of the dihydrogen metal phosphate salt is consumed by its deposition on the substrate as an insoluble metal phosphate salt.

Abstract: A vertically oriented centrifuge tube is placed in a rotor cavity and the open end sealed with a tapered plug. A resilient O-ring is placed in an annular groove formed in the top of the tapered plug and a retaining disc, secured to the open end of the cavity, wedges the plug into the open end of the centrifuge tube. The O-ring, being resilient, maintains an axial force which aids in retaining the tapered plug properly seated within the open end of the centrifuge tube, even during and following the stresses of centrifugation.

Abstract: The new amino derivatives of pyrido[2,3-d]pyridazine carboxylic esters and acids have the general formula ##STR1## They are useful as analgesic, anti-inflammatory agents and central nervous system depressants. In addition, this type of compound increases the intracellular concentration of adenosine-3',5'-cyclic monophosphate.

Abstract: The power control circuit described functions to vary the duty cycle of the alternating current signal supplied to the load. The duty cycle is varied by periodically generating a first signal, each half cycle of the alternating current signal, that is proportional to the actual power supplied to the load as a function of the duty cycle and wave form of the alternating current signal. A comparator compares this first with an error signal to vary the duty cycle in accordance with the power demanded by the error signal. The first signal is derived by evaluating the integral of the square of the voltage over each half cycle of the alternating current signal.

Abstract: Na.sup.+ -conducting glass and glass-ceramic of the composition comprising aNa.sub.2 O, bSiO.sub.2, cM.sub.2 O.sub.3, dM'O.sub.2 and eM"O wherein, based on the combined molar amounts totaling 100%, a is 32-41 mole %, b is 50-58 mole %, the ratio a/b is 0.575/1 to 0.760/1, c is 0-8 mole %, d is 0-7 mole %, e is 0-17 mole %, 2c+d+e is at least 8.7 mole %, M is one or more elements selected from the group consisting of the rare earth elements, yttrium and iron, M' is Zr or Hf and M" is Mg, Ca, Sr or Ba, Na.sup.+ -conducting composition having the substantially cubic crystalline structure of the formula Na.sub.9-x-n-z/2 M.sub.1+x/3-2y-n-z/2 M'.sub.y+n M".sub.y+z Si.sub.6 O.sub.18 wherein M, M' and M" are as defined above, x is 0 to 1.5, y is 0 to 0.5, z is 0 to 2.0, n is 0 to 0.5, y+n.ltoreq.0.5 and y+z.ltoreq.2.0 and the use of said glass, glass-ceramic and crystalline cubic material as a solid electrolyte.

Abstract: Radiolabeled steroid derivatives having the formula ##STR1## wherein St is des-hydroxy steroid moiety of (i) a hydroxy steroid intended for radioimmunoassay or (ii) a hydroxy containing derivative of a steroid intended for radioimmunoassay, said derivative having a strong affinity for the antibodies of the steroid intended for radioimmunoassay; R is hydrogen or alkyl of 1 to 3 carbon atoms; n is 0, 1, 2, 3 or 4 and the asterisk (*) indicates tagging with a radioisotope, are useful as tracers in radioimmunoassays.

Abstract: Chlorinated organic compounds from the aqueous waste streams from a process for manufacturing and isomerizing dichlorobutenes and dehydrochorinating 3,4-dichlorobutene-1 to chloroprene, which is the principal monomer in the manufacture of neoprene rubber, are removed by means of a process, wherein the aqueous waste from the dichlorobutene-isomerization step and brine formed in the dehydrochlorination step are combined to produce an aqueous solution containing about 1-5% sodium chloride and the solution, while maintained at a pH of less than about 6, is extracted with a small amount of a liquid hydrocarbon. The liquid hydrocarbon extract is then incinerated, while the extracted aqueous solution is discharged into a natural body of water. In this way, the level of 1,4-dichlorobutene-2, which is toxic to fish, in the natural body of water can be maintained at a safe level.

Abstract: A stabilized copolyester composition consisting essentially of (a) a multiplicity of recurring long chain units and short chain ester units joined head-to-tail through ester linkages, said long chain ester units being represented by the formula ##STR1## and said short chain units being represented by the formula ##STR2## where G is a divalent radical remaining after the removal of terminal hydroxyl groups from a poly(alkylene oxide) glycol having a molecular weight of about 400-6000 and a carbon to oxygen ratio of about 2.0-4.3; R is a divalent radical remaining after removal of carboxyl groups from a dicarboxylic acid having a molecular weight less than about 300 and D is a divalent radical remaining after removal of hydroxyl groups from a diol having a molecular weight less than about 250; provided said short chain ester units amount to about 15-95 percent by weight of said copolyester and (b) an effective concentration of amide linkages which on hydrolysis yield a primary amino group and a carboxyl group.

Abstract: A method of recovering a high-grade lecithin and solvents from an oil-bearing full miscella which also contains lecithin and which results from an oilseed ternary solvent extraction process. The method may include a first step of phase separation of the oil-bearing miscella containing lecithin and the ternary solvents into a polar and a non-polar phase, and a second step of azeotropic distillation of the non-polar phase to recover a portion of the solvents, and to remove substantially all the water from the residual crude oil, thereby keeping the lecithin in solution. A commercial grade lecithin having good water dispersibility is subsequently recovered from the residual crude oil, and a small amount of highly water dispersible lecithin may be recovered from the polar phase by atmospheric distillation.

Abstract: A silver halide emulsion which is useful in photography is described. The silver halide grains are characterized by uniform and increased grain size and uniform crystal habit when a compound containing the .dbd.N--C(.dbd.S)--N.dbd. moiety is present during the formation of the grains in the precipitation and/or the ripening steps.

Abstract: A snow vehicle having a rider supporting generally elongate platform with a flexible strap member positioned along the longitudinal center line thereof for releasably receiving the feet of the rider. First and second truck members are secured to the under surface of the rider supporting member with first and second generally broadly dimensioned ski members secured to the first and second truck members, the truck members being configured for pivoting the ski members in response to shifting of the weight of the rider on the vehicle.

Abstract: N-(heterocyclicaminocarbonyl)sulfonamides, such as N-[(2,6-dimethoxypyrimidin-4-yl)aminocarbonyl]-2-methylbenzenesulfonamide are useful for the regulation of plant growth and as preemergence and postemergence herbicides.

Abstract: New mercaptoacyl derivatives of 4,5-dihydro-1H-pyrrole-2-carboxylic acids and 1,4,5,6-tetrahydropyridine-2-carboxylic acids having the general formula ##STR1## are useful as hypotensive agents.

Abstract: Imidazolo-pyridine derivatives are provided having the structure ##STR1## wherein R is lower alkyl, lower alkenylalkyl, lower alkynylalkyl, cycloalkyl, cycloalkenyl, cycloalkylalkyl, cycloalkenylalkyl or phenylalkyl and R.sup.1 is lower alkyl, phenylalkyl or di-lower alkylaminoalkyl and n is 0, 1 or 2. These compounds are useful as anthelmintic agents administered orally or parenterally.

Abstract: In a CT scanner attenuation data are determined for a plurality of sets of radiation paths through a body and a representation of the distribution of attenuation in the body is obtained from them. It is known to recompute attenuation data for such paths from a first estimate of the representation to take account of heavily attenuating regions which cause errors due to, for example, changes of radiation hardness therein and to then recompute a corrected representation. Conventionally the original data are for sets of parallel beams and the recomputation (or second pass) is performed for parallel paths using the same algorithm, i.e. the same procedure of modifying electrical signals by electronic circuits specially constructed and configured to carry out the desired procedure. The original data can be for fan distributed sets of paths and processed in that form. Then the second pass, using the same algorithm, is for fan distributed paths.

Abstract: This invention relates to novel 2-aryl-1H-imidazo-[5,1-c][1,4]thiazine-1,3(2H)-diones, to agricultural compositions containing them and to the method of use of these compounds as pre- or postemergence herbicides for general control of undesirable vegetation. The invention also includes novel intermediate compounds for making the novel compounds.

Abstract: A method and a combination of reagents are disclosed for determining the creatine kinase activity by inhibiting the action of creatine kinase, the improvement consisting in that adenosine - 5'- monophosphate is used in combination with an inorganic, preferably an alkali metal, fluoride. By so doing the masking effect of adenylate kinase are efficiently offset.

Abstract: A half-wave regulator rectifier utilizes a silicon controlled rectifier (SCR) as the rectifying element between an alternator producing positive and negative voltage phases or waveforms and a battery charged by the alternator. The SCR is permitted to conduct charging currents through the battery during the positive voltage phases by means of a control circuit having a transistor connected to the control gate of the SCR. The control circuit monitors the alternator voltage and causes the transistor to inhibit conduction through the SCR above a regulated battery voltage unless charging current flows through the battery before the regulated battery voltage is reached by the alternator voltage. The regulator rectifier is protected against damage when abnormal conditions exist, such as no battery connection with the regulated system.

Abstract: Compounds having the formula ##STR1## and basic salts thereof, wherein R.sub.1 is hydrogen, alkyl, aryl, arylalkyl or ##STR2## wherein R.sub.5 is alkyl or aryl; R.sub.2 is hydrogen or alkyl;R.sub.3 is hydrogen, alkyl, aryl or arylalkyl; andR.sub.4 is hydrogen, alkyl, or arylalkyl;have useful hypotensive activity.