摘要:
Foamed articles having a closed cell structure formed from a polymer blend comprising at least 50% by weight of a styrenic polymer and up to 50% by weight of an acrylic polymer which has an average molecular weight which is less than 90% of that of the styrenic polymer which are significantly less dense than such articles prepared from the styrenic polymer alone.
摘要:
A glass composition which is essentially free of lead and cadmium includes 30 to 70 wt % SiO.sub.2, 1 to 25 wt % B.sub.2 O.sub.3, 0 to 10 wt % Al.sub.2 O.sub.3, 0 to 5 wt % Bi.sub.2 O.sub.3, 0.1 to 30 wt % CoO, 0.1 to 20 wt % ZnO, 1 to 30 wt % total of at least one of Li.sub.2 O, Na.sub.2 O or K.sub.2 O, up to 10 wt % ZrO.sub.2 and other optional ingredients. The glass composition can be used as a blue colored on-glaze enamel which relies upon the presence of Co.sup.2+ in a network-forming position in the glass to produce the blue color, with oxygen donors such as ZnO.sub.2, alkaline earth oxides and alkali oxides increasing the amount of cobalt occupying network-forming positions, and ZrO.sub.2 to provide chemical durability.
摘要:
The invention provides a process for the production of a substance or composition for the treatment, by therapy or prophylaxis, of parasitic infections, in particular malarial infections such as Plasmodium falciparum infections, of the human or animal body. The process comprises extracting the substance or composition from roots of the plant species Dicoma anomala, by an extraction using an organic solvent to obtain a liquid extract containing the substance or composition and removing the solvent from the liquid extract to leave a dried extract containing the substance or composition. The invention extends also to the use of the substance or composition in the manufacture of a medicament or preparation for such treatment of infections; to a substance or composition for use in such treatment of said infections; to compounds for use in such treatment of said infections; and to a method of treating said infections using such compounds.
摘要:
The on-chip copy process is extended so that the data may be copied between two blocks that may be on different chips, different planes on the same chip, or the same plane of the same chip. More specifically, the methods described here provide a single data copying mechanism that allows data to be copied between any two locations in a memory system. An exemplary embodiment uses an EDO-type timing. According to another aspect, selected portions of the relocated data, such as chosen words in a transferred page, can be updated in the controller on the fly. In addition to transferring a data set directly from a read buffer of a source array to a write buffer of a destination array, the data set can concurrently be copied, if desired, into the controller where an error detection and correction operation can be performed on it.
摘要:
Semiconductor gas sensors with improved selectivity to target gases are provided by having a semiconductor gas-sensing layer and a layer thereon of microporous ceramic oxide having catalytic activity.
摘要:
Techniques for managing data in a non-volatile memory system (e.g., Flash Memory) are disclosed. A controller can use information relating to a host's filing system, which is stored by the host on non-volatile memory, to determine if one or more clusters (or sectors with clusters) are currently allocated. The controller can use the information relating to the host's filing system to ensure that one or more clusters (or one or more sectors within a cluster) are not copied from one location to another location in the memory during a garbage collection cycle. As a result, some unnecessary operations (e.g., copying data) which are conventionally performed can be avoided and system performance can be enhanced.
摘要:
Techniques for managing data in a non-volatile memory system (e.g., Flash Memory) are disclosed. A controller can use information relating to a host's file system, which is stored by the host on non-volatile memory, to determine if one or more clusters (or sectors with clusters) are currently allocated. The controller can use the information relating to the host's file system to identify when the host is sending data to the next free cluster and to store such data in a sequential format by copying data from other locations in the non-volatile memory.
摘要:
According to a first aspect of the present invention, there is provided a memory system having a controller and a non-volatile memory storing firmware for start up and for normal operation of the system, the controller comprising, a volatile memory; and a processor; wherein the controller is arranged to operate during initialization or configuration of the system so that the start up firmware stored in the non-volatile memory is loaded into the volatile memory under hardware control by the controller and with the processor halted, the start up firmware in the volatile memory being subsequently executed by the processor.
摘要:
A foamed article having a closed cell structure formed from: (i) a polymer blend comprising at least 80% by weight of a styrenic polymer and up to 20% by weight of an acrylic polymer; and (ii) gaseous carbon dioxide blowing agent.