Abstract:
A method and apparatus for implementing optical network quality using bit error rate and chromatic dispersion. According to one embodiment of the invention, a method includes the provision of quality of service in a wavelength division multiplexing optical network that supports a plurality of bit rates. As part of this method, the cumulative noise and cumulative chromatic dispersion for each available path as a whole is determined, where an available path is a series of two or more nodes each connected by an optical link on which a set of wavelengths is available for establishing a lightpath. In addition, different grades of path quality are distinguished based on bit error rate (BER), where BER is based on cumulative noise and bit rate. Furthermore, a minimum path quality is required based on chromatic dispersion decibel penalty, where chromatic dispersion decibel penalty is based on cumulative chromatic dispersion and bit rate.
Abstract:
A process for preparation of ceftiofur of formula (I) of high purity and substantially free from impurities is disclosed. The process comprises reacting [2-(2-aminothiazol-4-yl)]-2-syn-methoxyimino acetic acid-2-benzothiazolyl thioester of formula (II), with 7-amino-3-(2-furanylcarbonylthiomethyl)-3-cephem-4-carboxylic acid of formula (III) in the presence of a mixture of an water-immescible inert organic solvent and water and in the presence of a organic base and isolating ceftiofur of formula (1) substantially free of impurities by, d) adding water to the reaction mixture and selectively partitioning the impurities in the organic phase and ceftiofur (I) in the form of a salt with the base in the aqueous phase, e) acidifying the aqueous phase containing ceftiofur (I) in the form of a salt with the base in the presence of a mixture containing a water-miscible and a water-immiscible organic solvent and in the presence of a saturated aqueous solution of an alkali or alkaline earth containing salt, to partition ceftiofur (I) in the organic phase, and f) isolating ceftiofur (I) of high purity and substantially free of impurities by evaporation of the organic solvent or precipitation by addition of a co-solvent.
Abstract:
In one embodiment, method that can be performed on a system, is provided to security implementations for storage devices. In one embodiment, the method comprises providing a separate encryption seed for each of a plurality of separate addressable blocks of a non-volatile storage device, wherein a common encryption method is to encrypt data to be stored on the plurality of separate addressable blocks. In one embodiment, the storage device is a portable storage device. In one embodiment, encryption seed is an Initialization Vector (IV). In one embodiment, the encryption seeds comprise at least one of a media serial number and a logical block address corresponding to the respective block of the non-volatile storage device. In an alternative embodiment, the method further comprises storing at least a part of the separate encryption seed of the separate blocks of the non-volatile storage device within the respective blocks of the storage device.
Abstract:
Apparatuses and methods of an expandable portable solid-state device are disclosed. In one embodiment, a solid-state device includes an expansion canister to enable coupling of a flash memory of the solid-state device to an external storage memory, and an executable-in-place module of the solid state device coupled to the flash memory to process a swap data to minimize a number of write operations in the flash memory. The executable-in-place module may include a secondary flash memory coupled to a dynamic random access memory. The dynamic random access memory may store at least as much data as the secondary flash memory. A logic circuit coupled to the secondary flash memory and the dynamic random access memory may copy data from the secondary flash memory to the dynamic random access memory on power up of a data processing system coupled to the solid-state device.
Abstract:
Zinc oxide-based sorbents, and processes for preparing and using them are provided, wherein the sorbents are preferably used to remove one or more reduced sulfur species from gas streams. The sorbents contain an active zinc component, optionally in combination with one or more promoter components and/or one or more substantially inert components. The active zinc component is a two phase material, consisting essentially of a zinc oxide (ZnO) phase and a zinc aluminate (ZnAl2O4) phase. Each of the two phases is characterized by a relatively small crystallite size of typically less than about 500 Angstroms. Preferably the sorbents are prepared by converting a precursor mixture, containing a precipitated zinc oxide precursor and a precipitated aluminum oxide precursor, to the two-phase, active zinc oxide containing component.
Abstract translation:提供了氧化锌基吸附剂,以及制备和使用它们的方法,其中吸附剂优选用于从气流中除去一种或多种还原硫物质。 吸附剂含有活性锌组分,任选地与一种或多种促进剂组分和/或一种或多种基本上惰性的组分组合。 活性锌组分是基本上由氧化锌(ZnO)相和铝酸锌(ZnAl 2 O 4 O 4)相组成的两相材料。 两相中的每一个的特征在于相对较小的微晶尺寸通常小于约500埃。 优选地,通过将含有沉淀的氧化锌前体和沉淀的氧化铝前体的前体混合物转化成两相含活性氧化锌的组分来制备吸附剂。
Abstract:
The present invention relates to a novel nitrile glycoside of Formula I named NIAZIRIDIN and to analogues and derivatives thereof. The present invention also relates to a process for the isolation of a novel nitrile glycoside of Formula I below named NIAZIRIDIN and its derivatives and analogues by bioactivity-guided fractionation from the pods of Moringa oleifera. The present invention particularly relates to the bioenhancing activity of the novel nitrile glycoside of Formula I below named NIAZIRIDIN and its derivatives and analogues in enhancing bioactivity of commonly used antibiotics such as rifampicin, tetracycline and ampicillin against Gram (+) and (−) bacteria. The biomolecule also enhances the absorption of drugs, vitamins and nutrients through the gastro-intestinal membrane increasing their bio-availability. Therefore niaziridin can be used in combination therapy with drugs and nutrients resulting in reduced drug associated toxicity, reduced cost and duration of chemotherapy.
Abstract:
A method and computer aided system for predicting the reliability of oxide-nitride-oxide (ONO) based non-volatile memory. ONO memory devices may be programmed. Margin voltages may be recorded initially, and during baking at 100 degrees C. and 300 degrees C. From this data, constants and activation energy may be determined through a first formula. Frenkel-Poole activation energy may be determined. Through the use of a second formula, decay time of the information stored in the ONO memory may be predicted from the activation energy. The first formula may also be used to predict the decay time. The two decay time predictions may be compared to establish confidence. In this manner, data retention of an ONO memory may be reliably predicted.
Abstract:
An improved modulating expansion valve includes a housing having a high pressure side, a low pressure side and a piston reciprocally mounted in a portion positioned centrally therebetween. A manifold is sealingly mounted above the piston, and a high pressure control passageway extends from the valve inlets, through the manifold, to a chamber on top of the piston. A low pressure passageway extends from the chamber through the manifold to the valve outlet. A pair of electrically operated solenoids open and close the high and low pressure passageways to operate the valve. Substantially infinite control of the solenoids provide for modulating control of the valve in a semi-hermetically sealed expansion valve.
Abstract:
This invention relates to a computing system, a fail-silent node for use in a computing system and a method of organizing information so that a number of microprocessors in a computing node, which are arranged to receive messages from other components in the computing system and to process the received messages so as to transmit the results of this processing to other components in the system, compare the results of their processing and send nothing out from the node unless either all the microprocessors in the mode produce identical results or more than half of the microprocessors in the node produce identical results. This is achieved by manipulating the order in which messages are processed by each microprocessor so as to ensure that each microprocessor in the node receives the same messages, orders these same messages so that messages within each microprocessor are processed in the same order, thus ensuring, if all the microprocessors are functioning correctly, that the same results are produced.
Abstract:
The present invention generally relates to a self-charging system for electric vehicles comprises at least one gearbox comprises an input end and an output end mechanically coupled to one of the wheels of a vehicle to the input end to generate a rotational energy with an increased output of one of the torque or speed (RPM) to the output end; an auxiliary generator connected to the output end of the at least one gearbox to convert the rotational energy into electrical energy; a controller equipped with a maximum power point tracker to produce maximum power output; and a charger controller coupled to the maximum power point tracker to charge a batter of the vehicle upon limiting electric current rate of the power output to protect against electrical overload, overcharging, and overvoltage.