Abstract: An Fc receptor protein conjugated with Ferritin binds to an exposed Fc region of an antibody to form a cell/Ferritin complex. Magnetic particles are added to the medium and bind to the complex. The magnetic particles when bound to the complex significantly enhance the magnetic field gradient of the complex such that it may be separated magnetically from the medium.

Abstract: A photoconductive sensor responsive to a CO.sub.2 laser beam. The sensor comprises a silver-doped germanium semiconductor. The silver dopant changes the conductive characteristics of the semiconductor which results in the doped germanium semiconductor being responsive to a wavelength range it would not normally be responsive to.

Abstract: A thermoconductive sensor for aligning a laser beam which includes a substrate, a dielectric layer disposed on the substrate to provide electrical insulation, an insulating layer interposed between the dielectric layer and the substrate and a reflective/refractive material embedded in the layer to reflect heat from the layer and to conduct heat through a plurality of fingers. A plurality of serially connected thermocouples communicate with the fingers to provide an output of the changes and the thermoconductivity to then realign the laser beam.

Abstract: A process for the production of a compound of the formula ##STR1## where R.sub.1 and R.sub.2 each are alkyl C.sub.1 -C.sub.16, aryl, aralkyl, alkenyl, alkynyl, cyano, carboxy and esters, carboximido, N-monosubstituted and N,N-disubstituted carboximido with alkyl, aralkyl, and aryl groups; R.sub.3 is tertiary butyldimethyl silyl, R.sub.4 is tertiarybutyldimethylsilyl, trimethylsilyl, X=O or NH comprising condensing a compound of the formula ##STR2## wherein R.sub.3 and R.sub.4 are as defined above with a compound of either the formula: ##STR3## wherein R.sub.1 and R.sub.2 are as defined above and R.sub.5 is C.sub.1 -C.sub.4 ; in the presence of a reaction-inert solvent at a temperature of from 50.degree.to about 150.degree. C. forming an intermediate and oxidizing the intermediate product, to form the desired compound of formula I. The products are antiviral.

Abstract: A polyaphron is formed having a continuous phase and a disperse phase. A drug is carried in the dispersed phase. The polyaphron is placed in contact with a medium and the drug is transferred from the disperse phase into the medium.

Abstract: Apparatus for producing the Fourier coefficients of a time and/or space-varying input signal utilizes a bank of delay filters whose outputs are selectively connected to the inputs of a bank of accumulating circuit each of which produces one of the desired Fourier coefficients. Each of the delay filters produces an output signal which is the weighted average of one or more samples of the input signal, the samples being equally spaced in time over the period of the input signal. The accumulating circuits, equal in number to the number of harmonics in the desired Fourier series, each produce a weighted sum of the output(s) of selected delay filters which are interconnected with the accumulating circuits in accordance with the so-called Mobius function. The apparatus may employ either general purpose or special purpose digital or analog processing circuits, and is particularly suitable for implementation with VLSI fabrication techniques.

Abstract: Bipyridylium compounds of the formula: ##STR1## wherein R' has a value known for paraquat and other viologens have been found to have colorimetric and oxidation-reduction properties which make them variously useful as redox indicators, electrochromic display devices, biological mediating agents, and herbicides.

Abstract: Enantiomerically pure glycerol derivatives, e.g. S-1,2-O-isopropylidene, S-1,2-O-benzylidene, and R-1,2-O-dibenzyl glycerol, have been prepared from 1,2R-O-protected erythritols in high yields. The latter compounds are easily obtained from erythorbic acid and are useful building blocks in the synthesis of a host of optically active compounds having biological activity.

Abstract: Angiosperm nodes are cultured to develop plantlets. The plantlets are exposed to photoperiods of light and dark. Leaf tissue removed from the plantlets when cultured produces at least 20% embryos.

Abstract: A bacterial suspension is contacted by a single vavelength in the ultra-violet range. A portion of the light energy used is absorbed and a portion of the light energy is emitted. The emitted light energy, resonance enhanced Raman scattering, is measured as backscattered energy. The energy is processed to produce spectra which are characteristic of the bacteria.

Abstract: A method of forming a thin film of an electrochromic material is disclosed. The method involves coating an acidic solution containing monomeric aniline and effective amounts of an oxidant and a catalyst on the surface on which the electrochromic film is to be formed. The monomeric aniline polymerizes in situ on the surface to from the electrochromic film.

Abstract: A tactile sensor which simultaneously provides a compliant interface between a support element and an object to be handled (i.e., a robot gripper in a delicate component), and identifies the contact force and the contact pattern between the object and the support element.

Abstract: An electronic display device having a polyaniline film coated on a transparent electrode. The film has electrochromic properties and will display at least three distinct reproducible color changes.

Abstract: A process for controlling the development of somatic embryos for either a self-replicative or a vine development mode. Somatic embryogenesis is initiated by placing the embryo in a medium conducive for self-replication. When the embryos have grown to a first stage, they are transferred to a medium with cytokinin activity. They continue to grow until they have grown to a second stage at which time they are transferred to a medium without cytokinin activity until they have grown sufficiently and can be transferred to a non-liquid growth medium.

Abstract: A nutrient gas is introduced into a liquid nutrient formulation. The resulting nutrient media is a foam. The bubble size of the gas phase is between 0.1 to 200 microns and the foam is 40-80% voids.

Abstract: A method of determining source areas of pollution aerosol. Selected pollution derived, fine particle tracer elements from within the source region are measured. The measured results are expressed as ratios to one of the tracer elements. A signature of the source region is determined from modes in the logarithmic frequency of the ratios of the tracer elements. Measurements are made of the tracer elements from a receptor region and elemental ratios constructed. The elemental ratios from the receptor region are compared with the signatures from possible source regions to determine the most probable source region.