摘要:
Nucleoside diphosphates (NDPs) are detected or measured by following the dephosphorylation of the phosphoenzyme form of nucleoside diphosphate kinase (NDPK), and nucleoside triphosphates (NTPs) are detected or measured by following the phosphorylation of NDPK to its phosphoenozyme form. A typical process involves (a) causing NDP in sample to bind to NDPK phosphoenzyme, or causing NTP in sample to phosphorylate NDPK and (b) detecting a change in a characteristic of the enzyme which differs between its phosphorylated and unphosphorylated forms. This may be aided by labelling the enzyme. Quantitative data can be obtained. Both in vivo and in vitro measurements can be made.
摘要:
The temperature of an electronic device at specified locations is determined by measuring the phonon frequency shift at the location of interest caused by operation of the device.
摘要:
A coal plough is composed of two spaced-apart interconnected bodies which engage on a guide and which are moved along the guide to strip coal from a coal face. Each body is provided with various sets of cutter bits located at both its end regions and a floor cutter adjustable to control the height of cutting. The cutter bits at the inner face end regions of the bodies project further outwards towards the coal face than the other bits. During operation when the bodies move in one direction along the guide, cutter bits at the forward outer end region of the leading body cut into the coal face and the following-up cutter bits at the forward inner end region of the lagging body also cut into the face. The remaining cutter bits do not engage on the coal face.In this way the cutting operation is performed by both bodies and similarly both bodies can assist into transferring the coal detached from the face over the guide and into a scraper-chain conveyor.
摘要:
A replaceable trimmer line device facilitates changing of trimmer line extending from a trimmer head. The device includes a line connector having opposite ends coupled to a trimmer head. A line socket extends through the line connector. A trimmer line has a head section and a cutting section. The cutting section extends from the head section. The head section is positionable in the socket such that the cutting section extends laterally from the line connector and outwardly from the trimmer head.
摘要:
Nucleoside diphosphates (NDPs) are detected or measured by following the dephosphorylation of the phosphoenzyme form of nucleoside diphosphate kinase (NDPK), and nucleoside triphosphates (NTPs) are detected or measured by following the phosphorylation of NDPK to its phosphoenzyme form. A typical process involves (a) causing NDP in sample to bind to NDPK phosphoenzyme, or causing NTP in sample to phosphorylate NDPK and (b) detecting a change in a characteristic of the enzyme which differs between its phosphorylated and unphosphorylated forms. This may be aided by labelling the enzyme. Quantitative data can be obtained. Both in vivo and in vitro measurements can be made.