摘要:
Provide a foamable polymer composition containing: (i) a thermoplastic polymer matrix and a blowing agent, (a) the thermoplastic polymer matrix containing a styrene-acrylonitrile copolymer having a weight-averaged molecular weight in a range of 90,000 to 150,000 and polymerized acrylonitrile concentration in a range of five to twenty weight-percent relative to total polymer matrix weight; and (ii) a blowing agent containing water, 1,1,1,2-tetrafluouroethane and at least one of difluoromethane and 1,1-dilluoroethane; (b) cooling the foamable polymer composition to a foaming temperature; and (c) extruding the foamable polymer composition and allowing the blowing agent to expand the foamable polymer composition into a polymeric foam having an average vertical cell size in a range of 0.5 millimeters to 1.8 millimeters and a density in a range of 24 to 40 kilograms per cubic meter and a Normalized Roughness Quotient of 3.5 or less in a Milled Surface Test.
摘要:
Prepare an alkenyl-aromatic foam having good surface quality, high thermal insulating properties and low density using an extrusion method by expanding a foamable polymer composition of an alkenyl-aromatic polymer composition containing less than 20 weight-percent covalently bonded halogens and having a polydispersity of less than 2.5 and a water solubility greater than 0.09 moles per kilogram and 2.2 moles per kilogram or less at 130 degrees Celsius and 101 kilopascals pressure and 0.8-2 moles per kilogram of a blowing agent containing 0.4 moles per kilogram or more of a chlorine-free fluorinated blowing agents and water at a concentration of at least 0.22 moles per kilogram; wherein moles per kilogram are relative to kilograms of alkenyl-aromatic polymer. The resulting foam has a density of 64 kilograms per cubic meter or less and a thermal conductivity of 32 milliwatts per meter-Kelvin or less after 180 days.
摘要:
Extruded polystyrene foams are made with an added brominated styrene-butadiene polymer as a flame retardant. The blowing agent is a mixture of carbon dioxide, ethanol and water, which may also contain a C4-C5 hydrocarbon. The blowing agent mixture overcomes a tendency of the brominated styrene-butadiene to form very small cells. This allows the foam to expand fully to form good quality, low density extruded foam.
摘要:
Apparatus and methods for transaction processing. The apparatus may be a transaction terminal including a keypad, a circuit for interacting with the transaction customer and a link communicatively connecting the keypad and the customer-interaction circuit. The cashier may interact with the keypad, while the customer (and not the cashier) may interact with the customer-interaction circuit. The link may communicate a dollar amount for the transaction between the keypad and the customer-interaction circuit. Accessories for the keypad may include a check reader, a display or a receipt printer. Accessories for the customer-interaction circuit may include a smart-card reader, a magnetic-strip reader and biometric readers. The customer-interaction circuit may include a port for connection to a remote service provider. That port may be the only remote-access port in the transaction terminal. The customer-interaction circuit may include a virtual keypad, and the circuit itself maybe programmed to capture a personal identifier number by means of that virtual keypad. The customer-interaction circuit may include virtual paper, and the circuit itself may be programmed to capture a signature by means of the virtual paper. A cash register at the POS location with the transaction terminal may not be communicatively coupled to the transaction terminal.
摘要:
A system and method for complete message delivery to a multi-mode communication device is presented. The communication device is adaptable to communicate with one or more carrier networks and one or more data networks. When a new message is received for the communication device, a message notification is sent to the device via a first network. The communication device parses the message notification and retrieves the complete message via a second network. Alternatively, the message notification may be delivered and the complete message may be retrieved via the same network.
摘要:
Local data maps of an optical imaging system are stitched together into a composite global data map based on a merit function supporting closed-form processing. Overlapping regions of the local data maps are defined as difference maps that are given a parametric description. Corrective orientations of the local data maps are derived by collectively matching parametric descriptions of the corrective orientations for the overlapping local data maps to the parametric descriptions of the corresponding difference maps.
摘要:
There is provided a first dock for a portable hard disk, where the first dock is connectable to a host device. There is also provided a corresponding method for accessing content on the host device during use of the dock. It is advantageous that the host device is able to access content from portable hard disks that are docked with the first dock and a second dock.
摘要:
Local data maps of an optical imaging system are stitched together into a composite global data map based on a merit function supporting closed-form processing. Overlapping regions of the local data maps are defined as difference maps that are given a parametric description. Corrective orientations of the local data maps are derived by collectively matching parametric descriptions of the corrective orientations for the overlapping local data maps to the parametric descriptions of the corresponding difference maps.
摘要:
An adjustable nozzle dispenser and a multi-nozzle dispenser are disclosed for washing an aerofoil of a gas turbine engine. The dispensers are characterised by their nozzle arrangements being capable of washing at least two different parts of the aerofoil. A system and a method of operating such a nozzle dispenser is included.
摘要:
An electronic pillbox includes a plurality of compartments for storing different medications, an LCD-based user interface for interacting with a user, and a software-programmable electronic computer for controlling the administration functions of the pillbox. The pillbox may also include a battery and one or more types of alarms. Using the user interface, a user can schedule a multiple drug therapy by inputting sleeping pattern data and a dosage amount for a particular compartment. The computer automatically calculates the dosage schedule based on this information, and automatically recalculates the schedule if this information is altered by the user. A visual indicator on the user interface is illuminated when a particular medication is to be taken, and at the same time an audible and/or mechanical alarm may be activated. The combination of the visual and audible or mechanical alarms ensures that the correct medication is administered according to the programmed schedule.