An optical scanning device comprises a laser which produces a light beam. The light beam is coupled by means of a half-silvered mirror (HS) to a recording medium (CD), and from there it passes through the half-silvered mirror (HS) and is reflected onto a photodetector (PD). The light beam is distributed over the photodector (PD) by a convex lens located behind the half-silvered mirror (HS). The co...

A ceramic fiber-ceramic composite filter having a support composed of ceramic fibers, preferably texturized, a carbonaceous layer thereover, and a silicon carbide coating over the carbonaceous layer and coated on substantially all of the fibers. A strong, tough, lightweight filter is achieved which is especially useful in high temperature gas environments.

A method is disclosed for denitrification of compounds containing nitrogen present in aqueous waste streams. The method comprises the steps of (1) identifying the types of nitrogen compounds present in a waste stream, (2) determining the concentrations of nitrogen compounds, (3) balancing oxidized and reduced form of nitrogen by adding a reactant, and (4) heating the mixture to a predetermined rea...

The invention relates to a method of rapidly transporting a drug to the epidermis and accumulating and maintaining the drug therein for a prolonged period of time comprising administration of a therapeutically efective non-toxic amount of the drug with an effective amount of hyaluronic acid.

A pharmaceutical composition comprising a plurality of effective non-toxic dosage amounts of a composition for topical administration to the site of pathology and/or trauma of skin and/or exposed tissue of a human patient in need of treatment suffering from a disease or condition, each such dosage amount comprising a therapeutically effective non-toxic (to the patient) dosage amount of a drug for ...

A display arrangement for displaying an image for a viewer on the basis of at least two variables for each picture element such as picture element position and picture element information. In known display arrangements of this type, the whole image is produced at one and the same place by means of one image display element. According to the invention, the display arrangement is divided into two di...

In the truffle detection appts., ambient air from near the ground being searched is drawn into an inverted funnel (12) and then through a sampling head (18) by a pump (17) which is located in a supporting tube (13). Polymeric detector heads (1) are fixed half way along the sampling head (18). The upper end of the tube (13) has a handle (15) attached to a box (14) which houses a microcomputer and i...

A secondary air supplying apparatus for an internal combustion engine and a gas heating apparatus are provided to enable high-performance exhaust gas purification in a catalytic apparatus of the internal combustion engine, in particular, even at a low-temperature starting time. A secondary air supplying apparatus supplies secondary air to the catalytic apparatus through a secondary air introducing...

An article rotating assembly and process for rotating articles to a predetermined orientation on a moving conveyor. The assembly comprises movable article control structures and cooperating vertical motion and rotational motion assemblies which are synchronized with the conveyor. Each article control structure is constructed and arranged for vertical and rotational movement above the moving convey...

An article rotating assembly and process for rotating articles to a predetermined orientation on a moving conveyor. The assembly comprises movable article control structures and cooperating vertical motion and rotational motion assemblies which are synchronized with the conveyor. Each article control structure is constructed and arranged for vertical and rotational movement above the moving convey...

An endless conveyor having a belt which follows a helical conveying path over part of its length and comprises a plurality of self-supporting tiers, wherein the lowermost tier of the stack is supported by a plurality of trolleys (36) running around a support rail (30), the trolleys being individually driven around the support rail by an internal drum (13) which is driven in rotation also to drive ...

A membrane type liquid purification system that comprises: a supply means feeding a liquid to be purified; a purification unit with a membrane (6) and having an inflow port connectable to the supply means and an outflow port delivering purified liquid, the liquid to be purified is separated by the membrane (6) from the purified liquid; a purified liquid storage means (9) connected to the outflow p...

PCT No. PCT/DE92/00341 Sec. 371 Date Oct. 26, 1993 Sec. 102(e) Date Oct. 26, 1993 PCT Filed Apr. 29, 1992 PCT Pub. No. WO92/19134 PCT Pub. Date Nov. 12, 1992.The rectangular bed frame (1) of a folding bed is composed of two substantially symmetrical elements (2, 3), which are interconnected by hinges (4) in the symmetry plane lying between the two narrow sides (6) of the bed frame (1), so that the...

The powder inhaler is based on a supply container (3) for the drug, which supply container is partially or completely closed off at its lower end by a rotatable or displaceable, manually actuated metering plate (4) for the repeated reception and delivery of a predetermined, reproducible quantity of the drug from the container (3), and of a mouthpiece (14) for inhaling, upstream of which a dispersi...

A compound of formula (I): (I) wherein R is a hydrogen atom or a C1-C4 alkyl group; A is a single bond or a straight or branched C1-C6 alkylene chain; R1 is a hydrogen atom or a C1-C6 alkyl group; R2 is a C1-C6 alkyl group, a C5-C7 cycloalkyl or a C6-C10 cycloalkylalkyl group, aryl or a C7-C10 arylalkyl group, or a C6-C10 heterocyclylalkyl group; R3 is hydrogen, a C1-C4 alkyl group or...

This invention is directed to improved treatment for glaucoma. It involves delivering to the eye molecules which increase the outflow of aqueous humor, in conjunction with masking agents. The masking agents reduce the side effects of the therapeutically active molecules by masking the sulfhydryl reactive groups on the molecules. The masking agents can be delivered separately from the molecules, or...

The invention provides a novel method for producing compounds of the formula I: wherein X and R are defined in the specifications. The invention also provides a method for making intermediates useful to produce the compounds of formula I. Utilizing a common intermediate, the novel method efficiently produces compounds of the formula I.

Conjugates of chlorophyll (Chl) and bacteriochlorophyll (Bchl) derivatives with amino acids, peptides and proteins are provided by the invention.The amino acid, peptide or protein residue is linked to the 17-propionic acid group of a Chl or Bchl residue directly or through a chain.The conjugates are for use as photosensitizers in photodynamic therapy and in diagnostics of tumors. Conjugation with ...

PCT No. PCT/SE92/00056 Sec. 371 Date Aug. 24, 1993 Sec. 102(e) Date Aug. 24, 1993 PCT Filed Jan. 29, 1992 PCT Pub. No. WO92/13873 PCT Pub. Date Aug. 20, 1992Compounds of the general formula (I), (I) in which formula the 1,2-position is saturated or is a double bond, R1 is hydrogen or a straight or branched hydrocarbon chain, R2 is hydrogen or a straight or branched hydrocarbon chain, ...