Abstract: A lead-acid battery cell wherein each cell includes a compressed assembly of negative plates (2,3), separators (5) and positive plates (1).The positive plates (1) are sandwiched between two microporous separator elements (4) having dimensions greater than that of the plates and the plate edges are coated with an epoxy resin ribbon (20), which is provided by pouring resin into the channel between the projecting portions of the separators.

Abstract: A plasma generator comprises a metallic tube of small diameter inside which can circulate a gas such as argon at a small flow rate, which is discharged at the front end of the tube. The tube is coupled with an energizing structure which can comprise a frequency generator supplying electromagnetic microwaves, via a coaxial connection, a coupling structure allowing the transfer of the energy of the generator to the front portion of the metallic tube. In the absence of a gas current in the tube, the front portion radiates the energy transmitted to it in the manner of an antenna. When a gas is discharged at the end of the tube, said energy allows maintaining a plasma in front of the latter.This plasma generator device is usable in many applications, such as a blowtorch a light source or torch usable in spectrography, a plasma motor or an ion source.

Abstract: The invention relates to new chemical compounds corresponding to the following formula ##STR1## in which R is a non-hydrolyzable radical and Az represents aziridinyl ##STR2## These compounds may be used as medicaments.

Abstract: A solution of an active protein substance and an inactive protein substance is reacted with a cross-linking agent, optionally in the presence of an inert carrier, under cross-linking conditions to produce articles comprising both active and inactive protein substances. The active protein substance comprises up to about 20 percent, e.g. from 1 to 20 percent by weight, based on the final weight of the total protein substance, whereas the cross-linking agent comprises from 0.5 to 8 percent by weight, based on the weight of the total treated mixture. The obtained articles are in the form of a solution or a suspension in aqueous medium, in the form of a film, in the form of a membrane, in the form of a fabric, in the form of a porous material, or in the form of a mass, such as granules, pills or tablets.

Abstract: The novel products are water-soluble oligomers, free of N-acetyl-glucosamine units, and of which the monomer elements include a group derived from muramic acid on which is fixed a chain of the peptide type including at least two aminoacyl residues, the first being selected from among: L-alanyl, L-arginyl, L-asparagyl, L-histidyl, L-hydroxyprolyl, L-isoleucyl, L-leucyl, L-methionyl, L-phenylalanyl, L-prolyl, L-seryl, L-threonyl, L-tryptophanyl, L-valyl, and the second aminoacyl is D-glutamyl or D-isoglutaminyl. They are useful for their immunoregulator properties and for the preparation of pharmaceutical compositions.

Abstract: The length and width of fissures in a bore hole is determined by alternately flowing liquid into and out of the formation from an isolated zone of a bore hole, at different frequencies, and measuring the dynamic pressure of the flowing fluid. The length of fissures in the isolated zone is determined from frequency peaks at high pressure to flow ratios, and the thickness of the fissures is determined from variations of pressure-flow ratios with frequency by comparison with known data. Sonde apparatus for practicing the method is also disclosed.

Abstract: The invention concerns a fabrication process for a selective absorber of a solar collector to achieve a solar-radiation collection-surface with high absorptivity and low emissivity.The collector surface is made of an iron alloy containing chrome and is immersed in an acid bath containing oxygen atoms and at least one metalloid substance based on sulfur, selenium and/or tellurium; beforehand, the state of the collector surface is adjusted for activation.

Abstract: The invention relates to compounds of formula: ##STR1## wherein R'.sub.1 =H, OH or an alkyl group, preferably a lower alkyl group, alkylthio or alkoxy, an halogen or an amino group,R'.sub.2 =H or a lower alkyl group.These compounds have antitumoral and antiviral properties useful for the treatment of cancers in lower animals.

Abstract: A method for forming articles such as crates in which sides of the crate extend generally perpendicular to the base of the crate. The method includes forming a layer of loose binder coated wood particles, precompressing selected portions of the layer which form the sides of the crate, bending the precompressed portions upwardly, inserting the so formed layer in a mould and compressing the layer in the mould to form the desired article. The initial layer can be slightly compressed to hold the particles together and the base of the article can also be slightly precompressed but to a lesser extent than the portions which form the sides.

Abstract: The novel derivatives correspond to the general formula: ##STR1## in which R.sub.1 is a Y--(CH.sub.2).sub.n --NR.sub.4 R.sub.5 group, where Y represents a single bond or the group ##STR2## R.sub.4 and R.sub.5, identical or different, are hydrogen or an alkyl radical, preferably a lower alkyl, or again form together a ring which can include heteroatoms, in particular nitrogen atoms. n is a number ranging from 1 to 10, notably from 2 to 7, R.sub.2 is a hydrogen atom, a lower alkyl group or an aralkyl group in which the alkyl substituent is a lower alkyl group, and R.sub.3 is a hydrogen atom or a CH.sub.3 group useful for the treatment of leukemias.

Abstract: The present invention relates to a method and apparatus for processing rectangular pieces of fabric wherein the piece of fabric is moved in a first direction until the front edge reaches and is held in a predetermined front position, whereas the remaining part of said piece continues to move in said first direction until the rear edge reaches and is held in a predetermined rear position. The piece is thereafter moved in a second position while the front and rear edges are kept apart at a predetermined distance, and the aforesaid edges are hemmed simultaneously by hemming machines. The method and device according to the invention are used for hemming pieces having two parallel edges, and in particular rectangular pieces cut from a continuous web of fabric, such as for example floor cloths.

Abstract: The invention relates to novel compounds of the muramyl-peptide type and to their uses. The muramyl-peptides according to the invention comprise at least two aminoacyl residues in the peptide chain, the second of these aminoacyl residues being D-glutamyl, and they are characterized in that the nitrogen of the first amino-acyl, and forming part of the pepetide linkage connecting the muramyl group to the peptide residue, is substituted by an alkyl group. These compounds are useful notably for the preparation of pharmaceutical compositions, in particular by reason of their regulatory properties on the immune responses of the organism.

Abstract: The invention relates to substituted phenoxyacetates of cyclic amines.These compounds are of the formula: ##STR1## wherein X is chlorine, fluorine or the trifluoromethyl radicaln is 0 or 1,R is a cyclic amino group having five or six atoms possibly substituted on the nitrogen atom, the nitrogen of said amino group being in position 2 or 3 with respect to the oxygen or to the group CH.sub.2 if present.Application: treatment of obesities and hyperphagias, of cerebral and endocrinic deficiencies.

Abstract: The transparent material is constituted by a thin film of a substoichiometric amorphous oxide of molybdenum or tungsten, the electrical conductivity of the material being dependent on the dose of optical radiation which it has received. The potential applications of the material include the fabrication of memory devices and image converter devices.

Abstract: This invention relates to a method and a device for high-speed production of aromatic essential oils from perfume-generating plants. The device comprises at least one enclosure 1 provided with means 2 for crushing said plants into a slurry, heating means 5, means 6 for feeding said plants thereto, means 7 for drawing off said slurry, a distillation column 9 and at least a condensing apparatus 15, 20 to form at least one condensate of essential oils. This device is applicable for industrially recovering essential oils from perfume-generating plants such as jasmine, orange flower, mint, ginger, aniseed, etc.

Abstract: The invention relates to a manufacturing process for a selective absorber for a collector panel of solar radiation with high absorption and low emissivity.The process consists in making the collector panel of the absorber from an iron alloy containing in particular such a filler metal as chromium in the alloyed state and in subjecting said surface to an anodic oxidation in an acid electrolytic bath containing metalloid-based electrically active substances, in particular such sulfur based substances as sulfides.The process of the invention allows making collector panels at low cost and with high selectivity without thereby incurring the danger of degrading said panels either at average or high temperatures.

Abstract: In a homopolar dynamoelectric machine in which a magnetic flux moves across a generally cylindrical clearance space between the stator and rotor, counterproductive magnetic fields produced by axial electric currents are avoided by providing, on the mutually confronting surfaces of the stator and rotor, nonmagnetic electrical conductors which are electrically insulated from the magnetic portions of the stator and rotor. The conductors are connected together electrically by contacts, providing an electrically conductive loop which encloses no magnetic members. Leads from the electrically conductive loop may be connected to an external circuit.The electrical conductors in one embodiment are of solid cylindrical shape, and in other embodiments are formed of spaced bars as in a squirrel cage. When spaced bars are used, the bars on one member are axially oriented and the bars on the other member are arranged in two sets which are equally but oppositely inclined to the machine axis.

Abstract: The invention relates to bis(substituted phenoxyacetates) of N-alkyl-dialkanolamines.These compounds are of the formula: ##STR1## wherein: X is chlorine, fluorine or trifluoromethyle,n is in the range from 1 to 3 and is preferably 2,R is a lower alkyl group, such as methyl or ethyl group, and the pharmaceutically acceptable salts of said compounds.Application: prevention and treatment of cerebral disorders.

Abstract: The anchor comprises a shank and a rocker which is mounted in the vicinity of one end of the shank to pivot about an axis perpendicular to the shank and to the rocker and which has two equal branches constituting the arms of the anchor. Each arm carries at its free end a ploughshare whose convergent end portion faces the other end of the shank. The convex faces of the two ploughshares are disposed in confronting relation. In operation, the anchor operates in the same way as conventional so-called "plough" anchors in hard grounds, whereas the two ploughshares sink into and simultaneously operate in very soft grounds.

Abstract: The invention relates to new compounds useful notably as regulator of immune responses and which are derivatives of muramyl peptides substituted at the end of the peptide chain by a group containing at least four carbon atoms.