摘要:
A post, for traffic signs, lighting and the like has a polygonal shape, with essentially rigid sides. The sides situated at right angles to oncoming traffic have attentuated portions therealong. When an oncoming vehicle strikes the post, the attentuated portions break, greatly reducing the strength of the remaining sides.
摘要:
A post for traffic signs, electrical or telephone lines, lighting fittings and the like adapted to have minimum resistance when being hit by vehicles and the like, but sufficient stability under normal conditions, having a pipe with a series of intermittently arranged longitudinal, longish and scattered weakened slot-like portions and a covering layer enclosing the pipe and circumferentially stabilizing the pipe portions separated by the weakened portions.
摘要:
A blood test instrument using a disposable cartridge and a method of measuring a blood sample using the instrument are disclosed. The instrument includes a cell counting station for counting blood cells by electrical resistance measurement, a pressure actuating component adapted to apply a pressure alternately on two flexible receptacles of a disposable cartridge removably placed in the instrument to cause flowing of a mixture of a blood sample and a liquid agent between the two receptacles to obtain proper mixing, and a conduit adapted to deliver the mixture to the cell counting station for counting. After measuring the blood sample, the instrument withdraws a washing liquid contained in another receptacle of the disposable cartridge and uses the washing liquid to clean the instrument and to deliver the mixture back to the cartridge for disposal.
摘要:
A system for controlling air/fuel ratio in an air/fuel mixture supplied to a premix burner for gaseous fuels includes a blower (310) for inducting and pressurising combustion air, a Venturi-pipe (330) for governing a rate of gas to be mixed into the combustion air, and a pressure regulator (230) interconnecting a source of gaseous fuel to a supply point in the Venturi pipe (330). A preheated reaction chamber (500) and a lambda sond (620) are connected to a controller (350) controlling an amount of air bypassing said Venturi-pipe (330).
摘要:
An intraoperative anastomosis method is described and comprises the steps of providing an intraluminal prosthesis having a first end and a second end; suturing a first vessel to a second vessel to form a vessel junction; intraluminally delivering the prosthesis so that the first end of the prosthesis is disposed within the first vessel and the second end of the prosthesis is disposed within the second vessel; and deploying the prosthesis so that the prosthesis overlaps and reinforces the vessel junction. The vessel suturing, prosthesis delivering, and prosthesis deploying steps may be performed in a single operation. Other devices, systems, and methods are described.
摘要:
A system for controlling air/fuel ratio in an air/fuel mixture supplied to a premix burner for gaseous fuels includes a blower (310) for inducting and pressurising combustion air, a Venturi-pipe (330) for governing a rate of gas to be mixed into the combustion air, and a pressure regulator (230) interconnecting a source of gaseous fuel to a supply point in the Venturi pipe (330). A preheated reaction chamber (500) and a lambda sond (620) are connected to a controller (350) controlling an amount of air bypassing said Venturi-pipe (330).
摘要:
A disposable apparatus for use in blood testing includes a housing (21) having integrated means (41) for receiving a blood sample, a plurality of receptacles (28-33) for diluent and diluted sample, and a plurality of channels (34-39). Depressions are formed in a surface (27) of the housing to form the receptacles (28-33) and the channels. A diaphragm (40) seals the receptacles and the channels relative to said surface (27). When a pressure variation is applied to a portion of the diaphragm sealing a receptacle, liquid is caused to be displaced to or from that receptacle.
摘要:
Disclosed herein are methods and apparatus for operating and deploying a broadband wireless network having at least one data transmission node and a plurality of CPE units, wherein there is a wireless data link at least in part between the data transmission node and the CPE units, and further wherein the management and configuration of the network is managed centrally and at least one of authorization, authentication, data stream prioritization or queuing is accomplished through the operation of the CPE units. According to one embodiment there is provided a user group manager that provides a user interface for at least one local service provider to manage information about end users served by the local service provider. In another embodiment, management and configuration of the network is managed using a device that communicates with CPE units and the data transmission nodes. The system and method further provides a data transmission node that includes routing capability, wherein the data transmission node is located with at least one CPE unit. In another embodiment, a network supervision and management device holds an original configuration file for each CPE unit wherein each CPE unit further includes a configuration file that includes an address reference to one or more of the supervision and management devices thereby providing for connectivity to the supervision and management devices and capability of redundancy when more than one supervision and management device is referenced.
摘要:
An exemplary skew-tolerant true-single-phase-clocking (TSPC) flip-flop is disclosed that reduces current spikes by allowing willful introduction of skew in the clock tree of a single-phase circuit design. More precisely, a split-clock TSPC flip-flop, which allows the flip-flop hold times to be met in the face of skewed clocks, which, in turn, reduces the maximum value of current spikes, can be substituted for a traditional TSPC flip-flop in a sequential logic circuit. The input of the split-clock TSPC flip-flop is latched according to a first clock signal, which was used in a preceding stage, while the output of the split-clock TSPC flip-flop is driven according to a second clock signal. The first and second clock signals can be skewed in time, but have the same frequency and substantially the same phase. Metal Oxide Semiconductor (MOS) device can also be included within the split-clock TSPC flip-flop to reduce power dissipation in cases of large clock skew.
摘要:
A method for designing a synchronous digital circuit that exploits clock skew so as to reduce EMI and IR-drop. The circuit has a plurality of storage elements connected to combinational logic blocks, each of the storage elements being driven by a clock signal distributed from a clock device; and the method involves substantially maximizing the clock skew in the circuit subject to one or more constraints on the design of the circuit.