A pulse-operated transistor power amplifier having reduced switching times. The interconnected base electrodes of a pair of complementary transistors (T3, T4) are connected to the collector of a prestage transistor (T1). By a resistor (R2), the base electrodes are also connected to one terminal (+V) of the operating voltage source, to which the collector of one (T4) of the two complementary transi...

A dissolved substance contained in a solution is oxidized or reduced by adding a particulate semiconductor photocatalyst and a water-soluble electron acceptor or donor for the particulate semiconductor photocatalyst to a solution containing a dissolved substance, and irradiating the particulate semiconductor photocatalyst in the solution with an electromagnetic wave having an energy high enough to...

Process for the production of a dithiol by the action of hydrogen sulphide on an unconjugated diene in the presence of light of wavelength from 300 to 600 nm and of a catalyst system comprising an aromatic ketone or thioketone and a trialkyl phosphite; the diene is dissolved or dispersed in liquid H2S which is present in excess.

It is intended to provide for optimum utilisation of the data processing capacity of a computer system. For this purpose, an information identifying a special processing state is allocated to those jobs which can be arbitrarily shifted along the time axis. These jobs can be activated by a user input until there is a new input.

A discharge maintaining and recovery apparatus which maintains and recovers a state of ink discharge from a recording head (9) which discharges ink on a recording medium. This apparatus comprises ink receiving means capable of receiving ink, transporting means which connects the ink receiving means to an exhaust ink receiving member (55) which receives ink exhausted by the discharge maintaining an...

A waste ink receiving cartridge detachable from an ink recording apparatus and internally provided with a liquid absorbing member (5) for receiving waste ink from the recording apparatus, characterized by comprising a liquid non-absorbing sheet member (6) for dispersing waste ink at least to the longitudinal direction of said liquid absorbing member (5) along an external surface of said liquid abs...

Disclosed are methods of reducing water penetration through civil engineering structures which comprise applying to the structures a waterproofing agent pretreatment composition including acrylic or vinyl acrylic latices and various freezing point depressing agents. Also disclosed are packages including these pretreatment compositions and methods for using these pretreatment compositions to waterp...

A braided reinforcement (16) for tubular conduits (14) such as hose, and a method and apparatus for producing such reinforcement are disclosed. The reinforcement is characterized by a three over, three under braid pattern. The apparatus comprises a Maypole type braider wherein each driver (42) of the braider includes six pockets (78 and 79) to accommodate carrier spindles, and the number of carrie...

A coating material is produced useful for coating an intraocular lens having haptics secured thereto or integral therewith or for coating one or more of said haptics or for coating both which contains at least one substance to be released at a predetermined controlled rate into the human eye together with the coating material. The coating material is hydrophilic, compatible with the lens or haptic...

Method for impregnating in depth wooden boards, sections or planks with plastic materials, comprising the treatment of the wood, preferably pre-dried and optionally, first under vacuum conditions and then under pressure conditions, with an impregnation solution comprised of the plastic materials in organic solvents during a period of time sufficient to allow the impregnation of the wood with said ...

Apparatus and method for detecting changes in the posture of a patient. Two pressure sensors are chronically implanted at different places in the cardiovascular system. One may be positioned in the right heart, for example, and the other placed in the inferior vena cava. The positioning is selected for ease of chronic implantation. However, the positions chosen must be such that the differences in...

A method of accelerating the set of retarded cement characterized by contacting the retarded cement slurry with a solution containing an effective amount of a compatible accelerator selected from the group consisting of triethanolamine, diethanolamine and monoethanolamine. This may be employed in overwashing operations, treating retarded cement that is injected into open areas in the well or treat...

PURPOSE: To transmit electronic signals from a key as well when the key is inserted completely in a cylinder lock as during the insertion by installing a means to admit an inductive transmission of electric signals between the key and cylinder lock. CONSTITUTION: Surrounding a lock cylinder 12 having a slit 13 of a cylinder lock, a transmission yoke 14 is arranged consisting of legs 14.1 and 14.2 ...

PURPOSE: To carry out the continuous instructions in sequence by carrying out a certain instruction via a 1st processor and at the same time taking the data on the instruction out of a 2nd processor. CONSTITUTION: An instruction unit 12 is connected to a memory 10 to output two instructions which are given to a fixed point processing unit 14 or a floating point processing unit 16. The unit 14 incl...

A tablet dispenser for dispensing single tablets at a time comprises a hollow body portion (2), a moulded dispensing mechanism (22) slidable in the body portion (2) between a closed position preventing removal of tablets and an operative dispensing position, and a lid Portion (50) closing the upper regions (4) of the body portion (2). Depression of the lid portion (50) moves the dispensing mechani...

A method of producing blocks of self-adhesive labels or the like comprises feeding continuously to a cutting device (12, 13; 33, 34) a continuous label stock (10; 30) which on one face has a number of repeated images (11; 31) overlaid by a release coating and on the other face has a pressure-sensitive adhesive coating (16; 32). In the cutting device a succession of sheets (20, 37), each having mor...

In order to upgrade weak or failing cement/sand screeds in situ a low viscosity, polymer based, curable composition is applied thereto. The composition is one that penetrates the cementitious material and binds and strengthens same on curing. Such composition may be based on an epoxy resin or a polyisocyanate prepolymer.

A susceptor for heating a food substance in a microwave oven is disclosed which has a thin film of metal deposited on a dimensionally stable dielectric substrate, such as paper. Substrate having a rough surface may be used. Preferably, the susceptor has a complex impedance measured prior to heating, at the frequency of the microwave oven, which has a real part between 30 and 2000 ohms per square. ...

An amphiphilic ion-channel forming peptide and a toxic anion are employed as a pharmaceutical.

Method and apparatus for performing system monitoring and diagnostics is disclosed. In performing system monitoring, data is acquired from the system under test and compared to an event model. The event model comprises a database having event records which pre-define events which can occur. Each event record includes a state vector dependency which lists the events which must occur prior to the pr...