摘要:
Methods and systems are directed to managing sessions between users and a plurality of management servers on a network appliance. A unified session manager authenticates a user requesting access to a network appliance. The unified session manager then establishes a brokering session with a management server associated with a component application. The unified session manager may translate graphical user interface (GUI) messages between the user and the management server, while the user is in session with the network appliance. This provides the user with a uniform interface for the plurality of management servers. In another embodiment, the unified session manager may modify network addresses between the user and the management server. In yet another embodiment, the unified session manager may make a program from the network appliance available to the user to download directly from the unified session manager.
摘要:
In an application-level background transport service, a receiver node infers the available network capacity between itself and a sender node over a control interval. Based on the inferred available network capacity, the receiver node adjusts its receive window size accordingly in order to conservatively optimize the bandwidth used by a background transfer without degrading performance of other foreground transfers on the network. The adjusted receive window size is communicated to the sender node, which is likely to adjust its send window size based on the adjusted receive window size.
摘要:
A stepper motor control circuit reduces ripple current by applying both fast and slow current decays to a motor phase when current is being reduced in the motor phase while following a falling current waveform. The control circuit uses an initial fast decay to reduce a winding current and then switches to a slow decay until a winding current is sampled again. The control circuitry samples a winding current and compares the sampled current to a reference current to determine if current is to be applied or reduced using fast and/or slow decay methods. Different phase current sample circuits allow either constant current sensing or selective current sensing.
摘要:
Dental compositions are provided with a fluoride releasing material that is a metal complex described by formula M(G)g(F)n or M(G)g(ZFm)n where M represents an element capable of forming a cationic species and having a valency of 2 or more, G is an organic chelating moiety capable of complexing with the element M Z is hydrogen, boron, nitrogen, phosphorus, sulfur, antimony, arsenic F is a fluoride atom g, m and n are at least 1.
摘要:
The present invention provides a novel class of extractants and a method of manufacture for the extractants. The extractants are useful for the removal and recovery of metals from waste waters and process streams. The removal process utilizes a combination of a supported liquid membrane (SLM) and a strip dispersion to improve extraction of the target species while increasing membrane stability and reducing processing costs. The new class of extractants include dialkyl phosphoric acids containing alkyl chains of at least 8-12 carbon atoms. The method of manufacture includes mixing phosphorus pentasulfide with an alcohol, followed by hydrolysis of the intermediate reactants with a mineral acid.
摘要:
Dental compositions are provided comprising a) a polymerizable component, b) a fluoride-releasing material, c) a hydrophilic component, d) a polymerization initiator, and e) an acidic component. This dental composition is substantially free of added water, and has a Water Uptake Value of at least about 1.5 g of water per 100 g composition in 2 weeks. Compositions are also provided that comprise a) a polymerizable component, b) acid reactive filler, c) a hydrophilic component, d) a polymerization initiator, and e) an acidic component. The above materials are provided in amounts sufficient that the resulting composition has extremely desirable rheological properties.
摘要:
A curable dental composition comprising an ethylenically unsaturated moiety, an oxidizing agent and metal complexed ascorbic acid is claimed. The incorporation of metal complexed ascorbic acid provides a curable composition that exhibits improved color stability. The metal complexed ascorbic acid is particularly useful as a component of a paste:paste glass ionomer dental cement.
摘要:
Fully alkoxysilane-functionalized aliphatic polyamine compounds (e.g., fully functionalized dialkylenetriamine compounds) can be formed by reacting a dialkylenetriamine (e.g., diethylenetriamine) with a compound comprising an amine-reactive group and an alkoxysilane group (e.g., an isocyanatoalkylalkoxysilane). These functionalized compounds find utility as the predominant component in forming organic/inorganic hybrid materials via sol-gel processing.
摘要:
A device and a method for detecting a blockage position in a pipeline by RFID technology is disclosed. An RFID tag is disposed in a pipe of a pipeline first, the RFID tag is read with a predetermined single or double frequencies, and finally whether the position of the pipe at which the RFID tag is located is blocked or not can be judged by the difference between the echo signals sent from the RFID tag. By the RFID technology, a contactless and non-destructive approach of detecting a blockage in a pipeline is implemented.
摘要:
A method for expanding a cluster system is provided. The cluster system includes at least one Cluster Central Chassis (CCC), and a newly-added Cluster Line-card Chassis (CLC) connected with the CCC to form the cluster system. The method includes the following steps. A control plane is established. An equipment management right is switched to the CCC, so that the CCC manages the newly-added CLC. Meanwhile, a cluster line-card device, a cluster central exchange device, and a cluster system are further provided. In implementation, smooth expansion can be achieved without interrupting running equipment services in the CLC current network and without interrupting data services. Moreover, during the expansion process, hardware equipment needs not to be replaced, thus investment of users on the equipment is reduced.