Abstract: This invention is directed to a method and apparatus for thermal homogenization of molten metal in a heath of a electric arc furnace for steel production. The invention addresses the problem of lack of thermal homogenization by providing a lance which directs oxygen gas downwardly towards the surface of the bath and into the molten metal in a direction that diverges away from a direct line to a central region of the hearth through a horizontal divergence angle in the range of 10.degree. to 50.degree. thereby to enhance movement of the molten metal about the hearth and the direction of the gas is inclined downwardly to strike the nominal horizontal plane of the surface of the bath at an inclined angle in the range of 35.degree. to 50.degree. thereby to minimize splashing of the molten metal.

Abstract: Twin-roll caster for continuously casting metal strip comprises a pair of parallel casting rolls (1) each provided with longitudinal cooling water passages (26) adjacent other casting surfaces 25 of the rolls. Passages (26) are interconnected in groups of three to form three pass zig-zag water flow channels for flow of water back and forth between the roll ends. The roll ends are notched to form outwardly facing shoulders (44) for engagement with casting pool confining plates (10). Cooling water flows to and from the passages (26) through radial passages (35, 36) in roll end walls (27, 28) in the vicinity of the shoulders (44).

Abstract: A shoe having a replaceable sole pad for use by roofers is provided wherein the shoe has a thin lower flexible portion with a sheet or layer of hook fasteners of the hook-and-loop type fastener system disposed on a bottom surface thereof, and having a band secured thereto extending around a periphery of the shoe, and wherein a replaceable sole pad is provided having a sheet or layer of the corresponding loop elements provided on an upper surface thereof. The sole pad is constructed of a high density, closed-cell foam that provides greatly improved traction on roofing surfaces, thereby improving worker safety and productivity or efficiency, and provides adequate durability to make the shoe with the replaceable soles cost justifiable, when factoring in the improved productivity. The sole pad is installed and removed from the shoe in the conventional manner in which two object are fastened and unfastened by the use of hook-and-loop fasteners.

Abstract: The present invention relates to a power connection device (1) which includes, on the one hand, a female part (2) with a lyre-shaped profile contained within and secured by an insulating support (3), which assembly is fixed inside a panel and is only accessible from one side, and on the other hand, a male part (6) to be plugged into said female part through said accessible side. This device is remarkable in that, in order to transfer high-intensity currents, the female part is composed of a thick, rigid multiclip (2) into which the male part, composed of a single thick plate (6), is inserted during the connection, which female part has a clamping zone (P) and which male part has a thickness (W) such that the insertion force is between 1.5 and 5 daN and that the resultant of the contact resistances is less than 60 N.OMEGA..

Abstract: A simulation tool (ES) for a networking code (RE), characterized in that the code is carried in a computer (ORD) external to the system, the tool constituting an application for the operating system (NY) of the computer by being considered to be a virtual core (CC), and including at least the communications layer code, unmodified and compiled in the internal language of the computer (CC); the basic services for the virtual core, which are connected to said code (CONFIG, RA, SI, GH); a number (m) of libraries (L.sub.1 -L.sub.m) for access to the code (CC) for a number (n) of test applications (A.sub.1 -A.sub.n) of the latter code. The tool has particular utility in debugging networking codes.

Abstract: A high strength, high toughness, low carbon/low manganese steel is provided that is further resistant to stepwise cracking and sulfide stress cracking. The steel can be produced by conventional or thin slab casting techniques using normal speeds, with low manganese segregation levels. The steels are excellent candidates for linepipe applications in severe sour gas service.

Abstract: The invention relates to a printing process, such as lithographic printing, that requires a printing press and a colorant vehicle. To enable constituting and rapidly removing motifs to be transferred to a printing medium, a hardenable material having good affinity for the colorant vehicle is deposited automatically and directly onto a device that cannot be dismantled or detached from the press, i.e., is part of the press, and that is constituted of a material having an opposite affinity, so as to constitute the motifs to be transferred to the medium. The material constituting the device is such that the material can be removed rapidly when the motifs are to be changed, and is such that new motifs can be constituted there immediately after the removal of those preceding them.

Abstract: A tool at the service of a distributed application running on machines of a distributed data processing system running in a local area network, intended for balancing the load on each of the machines of the system, includes a master daemon and a plurality of agent demons. The master and each of the agents calculate the load of the machine on which they are running. The master collects the load data of each of the agents at a first sampling interval and sends that collected load data to all of the agents. At the request of the distributed application, the local agent closest to the application indicates to the application which machine has the lightest load. The application then makes the decision to request the machine with the lightest load to execute the services the application requires. As necessary, the tool selects a master from the agents, thereby ensuring the existence and uniqueness of a master at all times, regardless of failure affecting one 1010 or more machines in the data processing system.

Abstract: A burner design for use especially with rotary dryers is provided, in which a primary firing tube is provided with an oil body disposed proximate the burner tip portion of the firing tube, the oil body being constructed to divide an airflow into an outer portion flowing through an outer airstream passageway and an inner portion flowing through an inner airstream passageway, and to cause said inner and outer portions to intersect each other proximate the burner tip portion. The oil body is further provided with a slit opening on an inner surface thereof along a boundary of the inner airstream passageway, the slit opening being in fluid communication with a supply of fuel oil, whereby fuel oil can be delivered at low pressure at an inner surface of the oil body, whereupon the inner airstream portion will cause the fuel oil to film along the inner surface of the oil body and to be intersected by the inner and outer airstream portions to atomize the fuel oil at the burner tip.

Abstract: An administrator interface working with a relational data base management system belonging to a distributed data processing environment including a plurality of folders which reflect the states of the network and objects in the network, relative to the management (120), the processes (121) in the course of running, the events (122) which affect the processes (121), the configuration (123), the files (124), the command scripts (125), and the errors (126), and a software program for allowing access to and/or manipulation of the folders.

Abstract: Casting metal strip by delivering molten metal to a casting pool (81) supported on a pair of parallel casting rolls (16) and passing metal downwardly between the rolls to produce solidified strip (20). Flow of metal to the casting pool (81) is controlled by an input flow control valve (47). At start of casting when pool (81) is being filled speed of rolls (16) is varied in response to variations between actual instantaneous pool level and predicted level until pool approaches desired operational level. Thereafter any variations between instantaneous roll speed and desired operational roll speed are caused to adjust valve (47) to being pool level and roll speed to desired operational valves.

Abstract: A non-destructive testing equipment comprises a magnetic field generator for generating a uniform magnetic field, and a magnetic sensor accommodated in a thermal insulation container and filled with a liquid nitrogen. The thermal insulation container is located within a magnetic shield container having an opening. The magnetic sensor includes a SQUID that is a magnetic sensor having very high sensitivity. The magnetic sensor can detect, through the opening, an appreciable variation of the magnetic field that is caused by small impurities or minor defects contained in the object to be tested.

Abstract: Continuous casting of steel strip by solidification of casting poo (68) onto chilled cooling rolls (16) of a twin roll caster. Steel is delivered to casting pool (68) by a refractory delivery nozzle (19) which dips into the casting pool. The refractory material of nozzle (19) contains a significant quantity of chemical compounds contains sulphur, such as molybdenum disulphide (MoS.sub.2), magnesium sulphide (MgS) and calcium sulphate (CaSO.sub.4).

Abstract: A magnetic sensor comprises a SQUID made of a superconducting thin film. The superconducting thin film has a washer pattern and a terminal portion. The washer pattern has a non-square one hole pattern and a pair of slit patterns. The hole pattern has rectangle shape and includes the center of the washer pattern. The slit patterns having a straight shape growing parallel to the long side of the hole pattern, from the outside edge of the washer pattern toward the inside of the washer pattern. This outside edge of the washer pattern is the nearest to the hole pattern. There is an artificial grain boundary in the domain that spacing between the hole pattern and the slit pattern is narrowest. There is no artificial grain boundary in the other domain at all.

Abstract: In order to allow an external memory space to enter into the memory space of a microprocessor (43) comprising a cache memory (94), an integrated circuit (42) serves as an interface between the microprocessor (43) and a memory unit (8, 9, 12) constituting the external memory space. The integrated circuit (42) comprises a stack (91) sized for containing a data block from the memory unit (8, 9, 12) such that the block from the memory unit (8, 9, 12) is seen as one or more blocks in the cache memory (94), and a register (93) belonging to the memory space of the microprocessor (43) adapted to contain the coordinates for access to the memory unit (8, 9, 12).

Abstract: A processor node which includes at least one local bus (10) that assures a parallel link among the processors (8), a local memory (11) and a shared cache (12), and one network bus (13) that assures a parallel link among the local memory (11), the shared cache (12), and at least one input/output device (6).

Abstract: There is disclosed a structure for coupling between a low temperature circuitry cooled by a cooling system and a room temperature circuitry wherein the structure contains a device for electric connection and a second cooling system specifically for cooling of the electric connection.

Abstract: A sealed shaft bearing assembly employs a lubricant seal having a rigid seal case supporting a resilient dust seal in rubbing contact with a cylindrical surface on the shaft, and a labyrinth type primary seal between the dust seal and the interior of the seal case, with the labyrinth being defined by a stator mounted on the seal case and a rotor mounted for rotation with the shaft, and with the stator including a cylindrical tubular portion defining an elongated thin annular gap with the shaft cylindrical surface and the rotor defining an elongated thin annular gap with the outer surface of the rotor. The radial thickness and axial lengths of the thin annular gaps are such as to preclude the passage of grease type lubricant therethrough upon operation of the bearing.

Abstract: A derivative of hypusine useful as a reagent for synthesizing peptides containing hypusine, as well as a method for synthesizing the same, the derivative having the formula: ##STR1## wherein: Q.sub.1 and Q.sub.2 may be the same or different and are amino protective groups;Q.sub.3 is an amino protective group which is orthogonal to Q.sub.1 and Q.sub.2 ; andZ is a hydroxy protective group.

Abstract: The invention relates to a device for joining together at least two material flows in a laminar coextrusion machine comprising at least two extruders, more precisely as many extruders as layers of different materials used, a device for joining together the flows coming from the extruders into a so-called global flow, said device being also called a distribution box, and an extrusion head supplied by the global flow. The joining device includes a main channel wherein open annexed channels called supply channels convey the different material flows coming from the extruders, the channels being provided with means for restricting the flow passage cross-section. The supply channel connecting each extruder to the main channel is at least partially in the form of a cylindrical plug valve having means which transform a cylindrical rod into a planar sheet.