摘要:
Slabs are selected using a combination of a slab select gradient and selective RF excitation pulses to acquire 3D NMR data. Thinner 2D slices are selected within each slab by employing virtual frequency encoding of the acquired NMR signals. This encoding is achieved by stepping the value of the gradient in the slab select direction and concurrently changing the time interval between RF excitation and acquisition of the resulting NMR echo signal. A gradient recalled echo pulse sequence and a fast spin echo pulse sequence are described.
摘要:
A method and apparatus for dynamic security insertion into virtualized networks is described. The method may include receiving, at a network device from a second network device, a data packet and application data extracted from the data packet. The method may also include generating a routing decision for a network connection associated with the data packet based, at least in part, on the application data. Furthermore, the method may include transmitting the routing decision for the data packet to the second device for the second device to route the data based on the routing decision.
摘要:
A network system includes a security device and a network access device. The network access device is to receive a packet from a source node destined to a destination node, and to examine a data structure maintained by the network access device to determine whether the data structure stores a data member having a predetermined value, the data member indicating whether the packet should undergo security processing. If the data member matches the predetermined value, the packet is transmitted to a security device associated with the network access device to allow the security device to perform content inspection, and in response to a response received from the security device, the packet is routed to the destination node dependent upon the response. The packet is routed to the destination node without forwarding the packet to the security device.
摘要:
A network system includes a first network access device having an input/output (IO) module of a firewall to capture a packet of a network session originated from a first node associated with the first network access device, a first security device having a firewall processing module to determine based on the captured packet whether the first node is a destination node that is receiving VM migration from a second node that is associated with a second network access device. The first security device is to update a first flow table within the first network access device. The network system further includes a second security device to receive a message from the first security device concerning the VM migration to update a second flow table of the second network access device, such that further network traffic of the network session is routed to the first node without interrupting the network session.
摘要:
A method and system for handling a swing metal panel using a robot's drive axis servo motor feedback to eliminate the need for the sensors and breakaway devices is provided. Using the servo motor feedback for this function reduces cost and improves reliability. The method also applies the servo motor feedback to hold a panel in position and exchange the panel between robots during the painting or coating process.
摘要:
A network device is described in which a dedicated resource scheduler monitors memory consumption to provide for improved processing of communication sessions. The scheduler maintains a dependency list of communication sessions, and reserves memory for communication sessions as requests for memory are received. The amount of memory reserved is determined based on the amount of memory currently reserved for the communication sessions in the dependency list. The network device may control ongoing communication sessions by way of window manipulation. Communication sessions are processed in a first mode when available memory has not reached a predetermined amount, while communication sessions are processed in a second mode when available memory reaches a predetermined amount.
摘要:
A rotary mechanism includes an upper seat pan, a lower seat pan and an arc slideway mechanism. The upper and lower seat pans are connected at their sides and can rotate relative to each other. A middle inner slide rail of the arc slideway mechanism, which has a long through-hole in its center and is fixed to the lower seat pan, is positioned between an upper supporting plate and a lower supporting plate, both of which have a long aperture in their respective centers. Fixed parts run through the long through-hole and the long apertures, and fix an upper outer slide rail and a lower outer slide rail. A locking mechanism having portions fixed to the upper seat pan and the lower seat pan, respectively, is arranged to cooperate with the arc slideway mechanism to limit relative rotation of the upper and lower seat pans.
摘要:
A high efficiency power controller comprising of a driver circuit to convert to direct current (DC) voltage from alternating current (AC) voltage is used for drive solid state lighting (SSL) including light emitting diode (LED) and organic light emitting diode (OLED). The driver circuit is comprises of an AC-DC limited current unit, sensor processor, signal generator, feedback controller and SSL lamp module, which converts the AC supply voltage to a DC voltage by using a negative feedback current and voltage limiting circuit for powering SSL. The invented driver circuit operates at high efficiency with low power consumption. The current and voltage feedback circuit mode from current, voltage, light intensity and thermal temperature for SSL possesses reliable DC power driver without any flash during lighting.
摘要:
A microfluidic system for separating, purifying and counting cell sub-populations, utilising steering of liquid flows in microfluidic channels in a cell focusing region (first dotted circle area); having the integration of the optical detection mechanism and a microchannel structure made from moulding. A master is photolithographically patterned on a soft PDMS silicon or polymer material. After being moulded and peeled off the master, the micro-channel structure is sealed on a hard substrate with openings punched through for wells (14, 12, 36, 38, 40). An optical detection region (20) discriminates different types of cells that have been formed into a single flow (30). Electromagnetic fields are used to steer (32) the flows of cells according to the signals from the optical detection region into branch channels leading to the punched wells for separate collection. The system can have parallel systems that increase throughput or cascade systems to provide several analysis steps. The optical system an micro-lens (24) for the system can be imbedded in the moulding material during formation of the mould.
摘要:
High solubility of pristine single and multi-walled carbon nanotubes using electron donors as solubilizers has been observed. The resulting carbon nanotube solution can be readily diluted with other organic solvents, such as acetone, toluene and methanol. SEM after solvent evaporation clearly shows that nanotubes are still present after being subjected to this procedure. Electronic absorption of these solutions is observed in both the UV and visible region. Strong light emission (=0.30) was observed at 561 nm for dilute solutions of aniline-dissolved carbon nanotubes diluted with acetone.