A method of, and apparatus for, repairing mechanical and/or chemical damage to the surface of glass bottles destined for re-use. A bottle to be repaired is brought to a temperature in the region of the transformation point of the glass of the bottle, its surface is thermally treated with laser beams, and during the treatment the bottle surface is linearly scanned with the laser beams while rotatin...

The invention relates to a device for winding unvulcanised rubber strips on a cylindrical assembly drum. In order to be able to carry out the winding of the strip onto the drum automatically, even when a frequent change to other kinds of unvulcanised rubber strips is necessary, a device is proposed having the following features: a) a multiplicity of identical feed conveyors (a, b) for unrolling ...

A plate stack clamping element is formed of adjacent leaf springs preformed to diverge where they extend beyond the plate stack. Compression of the diverging portions creates large area contact clamping force against the plate stack.

The locations of defects in flat glass (1) are detected during conveyance through a detection station where the glass is scanned by a radiation beam (11). The beam sweeps transversely across the path of the glass through a distance in excess of the glass width so that the beam sweeps through both side edges. Beam deflection occurs when the beam encounters a side edge boundary of the glass (1) and ...

Magnesium-containing complexes are prepared by heating a mixture of magnesium hydroxide, magnesium oxide, hydrated magnesium oxide or a magnesium alkoxide; a carboxylic acid, a sulfonic acid, a pentavalent phosphorus acid, or an ester or salt of any of these; water; and an organic solubilizing agent (which may be liquid or solid at ambient temperature) for the acid or ester. The amount of magnesi...

The device comprises an undercarriage extending transversely of the working direction of the device, and supported, at its opposite ends, by respective pairs of worms with the worms of each pair rotating in respective opposite directions. A cantilever bracket is mounted on the forward side of the undercarriage, considered in the working direction. A plurality of conveyor troughs are mounted, for p...

A dental cement composition consisting of a composition A and a composition B, said composition A comprising at least two powders, (a) 100 parts by weight of a powder containing more than 20% by weight to 70% by weight of calcium oxide and 30% by weight to less than 80% by weight of aluminium oxide and treated on the surface with 0.01 to 5% by weight of at least one selected from the group consist...

A method for coating solid particles with a hydrophilic gel, characterized in that as the said particles hydrophilic particles are chosen which are mixed with a gel-forming substance at a temperature which is above the gelling temperature. The gel-forming substance is made to cover each individual particle, whereafter the particles are separated from each other and cooled to a temperature which is...

A display unit for a head up display wherein the combiner (9), which serves to reflect light from a display surface (3) towards an observer to provide the observer with an image of the display superimposed on his view through the combiner, comprises first, second and third tuned reflective optical films (13c, 15c, 17c) disposed in such angular relationship with one another and the display surface ...

A dental cement composition consisting of a composition A and a composition B, said composition A comprising (a) 100 parts by weight of a powder containing 20 to 70% by weight of calcium oxide and 30 to less than 80% by weight of aluminum oxide, said powder being coated on the surface with a water-soluble high-molecular substance, and (b) 2 to 70 parts by weight of a calcium hydroxide powder, and ...

PCT No. PCT/FR82/00175 Sec. 371 Date Jun. 27, 1983 Sec. 102(e) Date Jun. 27, 1983 PCT Filed Oct. 27, 1982 PCT Pub. No. WO83/01677 PCT Pub. Date May 11, 1983.The heating apparatus according to the invention concerns open circulatory-firing baking furnaces comprising an assembly of chambers which are heated by gases which circulate in hollow partitions (7, 19, 25) which divide the chambers into comp...

The invention relates to a method of continuously determining the internal resistance of an electrolysis cell and to an apparatus for carrying out this method. In the method according to the invention a weak alternating current (if) of frequency (f) is superimposed upon the electrolysis current, the active part (rf) of the impedance which the cell offers to this alternating current is measured, fo...

An aqueous acidic trivalent chromium and fluoride containing coating (passivating) solution for zinc, zinc alloy and cadmium surfaces contains one or more complex compounds of the formula [Cr(H2O)6-xFx](3-x)+A- wherein x is an integer of from 1 to 3 and A is an anion of the group selected from nitrate, sulfate, phosphate, chloride, bromide, fluoride and iodide. In particular the solution contains ...

A process for the production of a compound of formula I wherein R1 is carboxyl, alkoxy- (C1-5)carbonyl, amido, alkyl(C1-5)amido, di(alkyl(C1-5))amido or an amido radical of formula II wherein Ra is alkyl(C1-4), Rb is alkyl(C1-4) or benzyl, and R2 is hydrogen or alkyl(C1-4), and either R3 is hydrogen and R4 is hydrogen or alkoxy(C1-4> or R3 and R4 together are a single bond, is...

1-N-[ omega -amino- alpha -hydroxyalkanoyl] kanamycins A and B of the formula I in which R represents OH or NH2, are prepared by acylation of polysilylated kanamycin A or B, or polysilylated kanamycin A or B which has a protective group other than silyl on the 6'-amino group, with an acylating derivative of an acid of the formula II in which n is an integer from 0 to 2 and B is an ...

Disclosed are optically active anthracyclinones and their daunosaminyl derivatives, which are useful for the treatment of malignant diseases, particularly sarcomas, breast cancer, bronchogenic carcinoma, malignant lymphomas, neuroblastomas, acute leukemia and bladder cancer.

New S-adenosylmethionine (SAM) salts of formula (I) have been prepared in which R, R1, R2, m, n and A are as defined in the text. The methods of preparing the new products starting from SAM salts are described. The new products are stable and highly bioavailable, particularly when administered orally.

A test process operating using a specific bond for the investigation of a liquid medium on a ligand is described. The test process comprises the following steps: (a) the liquid medium is brought into contact with a reagent which contains a conjugate of a labelling substance which has a predetermined characteristic and a specific binding substance, the reagent and the ligand forming a binding rea...

A disposable diaper having elasticized crotch seals and an elasticized waist seal formed from elastic members secured to the backing sheet. The elastic members physically intersect each other and are under such tension so as to provide an initial stretching of the elastic members extending substantially at right angles to each other thereby maximizing the comfort of an infant wearing the disposabl...

The invention relates to a process for the separation of biotechnologically produced valuable materials form a cell suspension by crossflow microfiltration to obtain an high specific permeate flux while retention stays near 0% for long periods. To enable crossflow microfiltration to be carried out on an industrial scale in biotechnology in the separation of biotechnologically produced extracellula...