摘要:
A lightning arrester monitor which consists of an oxygen gas sensor provided in a lightning arrester having a zinc-oxide-type element made of zinc oxide, the main component thereof, and other oxides added thereto, the oxygen gas sensor measures the oxygen concentration of the element which increases as degradation thereof goes on. The monitor makes it possible to assess degradation of the zinc-oxide-type element with ease, without requiring any complicated electrical circuit for detecting leakage current.
摘要:
A gas control device in a halogen gas laser device which comprises: a filter for receiving a small quantity of deteriorated gas from the upstream portion of the laser gas circulating path to convert it into a low-boiling-point gas; and a gas detector for measuring the density of the low-boiling-point gas thus formed, to estimate the halogen gas density, and outputting, when the density is lower than a predetermined value, an instruction signal to supply halogen gas.
摘要:
An element for detecting internal faults in an insulating gas charged electrical apparatus comprises a substrate disposed in the electrical apparatus charged with an insulating gas, a pair of electrodes disposed on the substrate, and a thin metal film covering the pair of electrodes and the exposed surface of the substrate. This film is capable of producing fluorides with low conductivity upon reacting with a decomposed gas produced by internal faults of the electrical apparatus. Since the thin metal film exhibits high response characteristics readily in reaction with even a trace amount of a decomposed gas, it is possible to promptly detect faults occurring in the electrical apparatus, such as a partial discharge or local heating. In addition, a device for detecting internal faults in an insulating gas charge electrical apparatus using the internal fault detection element utilizes an optical signal for transmitting signals. Accordingly, the device is free from electromagnetically induced interference and is capable of remote monitoring because of the low level of loss in signal transmission.
摘要:
Provided are an isolated gene capable of participating in the production of L-homoglutamic acid, and a production system of L-homoglutamic acid by using this gene. The gene is derived from the genome of Flavobacterium lutescens.
摘要:
A process for producing L-2-aminoadipic acid, which comprises converting an aminomethyl group of L-lysine into a carboxyl group by use of a culture of a microorganism of the genus Flavobacterium. By this process, L-2-aminoadipic acid can be obtained directly from L-lysine in a high yield. This process is a microbial method which is effective for the mass production.
摘要:
An angolamycin derivative represented by the following formula ##STR1## wherein X represents an acetyl, methanesulfonyl, methylthio, benzoyl or methoxy group. This compound is useful as a medicament such as antibacterial agent and an animal feed additive.
摘要:
An improved water pipe for a cigarette is proposed which has a bowl, a stem and a smoke tube extending through the bowl so as to reach into water contained in the bottom of the bowl. A ball retained at bottom of the smoke tube prevents water from entering the hole and cigarette and serves to bring nicotine up and out of the smoke tube.
摘要:
A condition detection apparatus comprising an AE sensor 1 that detects AE waves, which elastically-occur when a plurality of balls included in an LM system self-rotate and revolve within a circulation section at the same time, and generates detection signals Sae, and a signal processing unit 4 that generates a first parameter indicating an intensity of the AE waves based on the generated detection signals Sae, generates based on the detection signals Sae a second parameter by weighting only detection signals Sae temporally-continuously detected among the detection signals Sae, generates based on the detection signals Sae a third parameter by weighting only detection signals Sae temporally-discontinuously detected in correspondence with the movement of the balls among the detection signals Sae, and judges contents of an operational condition of the LM system using any one of the first, second or third parameter, is provided to enable prognosis of occurrences of failures in the LM system, to improve maintainability for a user of the LM system, and to contribute to the prolonging of the operation life of the LM system as well as performance assurance and quality improvement of apparatuses or devices incorporated with the LM system.
摘要:
There is provided a condition detection apparatus for detecting a present operating condition of a linear rolling motion guide apparatus, and the condition detection apparatus includes an AE sensor 1 for detecting a waveform elastically generated at least due to rolling of balls included in the linear rolling motion guide apparatus and mutual collision of the balls and generating an electric detection signal corresponding the detected waveform, a waveform shaping unit 2, an A/D converter 3, and a signal processing unit 4 judging a content of the operation condition in response to the generated detected signal Sae.
摘要:
A method for enhancing the efficacy of chemotherapy and/or radiation in the treatment of cancer in animals, particularly humans, is provided wherein certain isocoumarin derivatives which exhibit unique radiosensitization activity and/or chemopotentiation properties are employed in a combination treatment with ionizing radiation and/or chemotherapy.