摘要:
A cantilever semiconductor acceleration sensor element is supported by a pedestal fixed to a base. The base is sealed with a cap, forming an airtight space between the cap and the base that is filled with silicone oil. A central portion of the cap is deformed by an external force to increase the pressure of the silicone oil in the space to a pressure above atmospheric pressure. The generation of air bubbles on the sensor element, even at low temperature, is avoided because of the high pressure of the silicone oil.
摘要:
Novel DC-89 derivatives as shown below have an excellent anti-tumor activity, and thus are useful as anti-tumor agent ##STR1## wherein L represents chlorine or bromine; R represents ##STR2## (wherein n represents an integer of 4 to 7) or ##STR3## (wherein Y represents oxygen or N--M).
摘要:
At least one pair of electrodes (5a, 5b) are provided on the surface of a dielectric discharge tube (1), and radiating fins (2a, 2b) are attached to a part of the electrodes (5a, 5b). A ceramic clamp (3) and a stainless-steel backup plate (4) are engaged with recessed portions of the radiating fins (2a, 2b), to thereby fix the radiating fins (2a, 2b) in position. Accordingly, a rise in the temperature of the electrodes is reduced by radiating heat through the radiating fins, whereby a separation or deterioration of the electrodes (5a, 5b) is prevented.
摘要:
DC-88A derivatives represented by the general formula: ##STR1## wherein X represents hydrogen or CO.sub.2 R.sup.1 (in which R.sup.1 represents hydrogen, a straight-chain or branched alkyl having 1 to 4 carbon atoms, allyl, or benzyl); and ##STR2## have an excellent anti-tumor activity and are useful as anti-tumor agents.
摘要:
In addition to the single combination of a tone generator such as a string with a hammer, a further combination is provided by an auxiliary tone generator such as an elongated thin metal strap and/or an auxiliary hammer preferably accompanied by a mechanism for effecting selective striking contact for tonal vibration between the tone generator or generators and the hammer or hammers when an associated common key is operated. Selectively combined simultaneous striking by the hammer or hammers generates tones of enriched tone color and volume by single key operation.
摘要:
The present invention relates to improvements in a portable chain saw wherein power of a power device like a motor separated from the body of the chain saw is transmittted to a driving means of the chain saw by way of a flexible shaft, thus the body of the chain saw being small-sized and lighter at weight. Further, in the portable chain saw body an overload protection means is provided preceding to means transmitting power to a driving roller for driving a chain cutter so that no more power than a predetermined load is transmitted to a driving means of the chain saw and only power of the predetermined load is done thereto.
摘要:
The purpose of the invention is to provide means with which it is possible to efficiently select a vector to which a foreign gene has been introduced when a foreign gene is to be introduced by homologous recombination to a vector having multiple sequences homologous with one another. The vector comprises, in succession, a replication origin, a sequence A, a marker gene X, two sequences C and D for introducing a foreign gene by homologous recombination, and a sequence B homologous with sequence A. The two sequences C and D are directly or indirectly adjacent to one another. The vector is used for introducing a foreign gene between the two adjacent sequences C and D.
摘要:
The present invention provides a mammalian stem cell suspension containing mammalian stem cells and at least one polysaccharide such as trehalose, and the like; a mammalian stem cell aggregation inhibitor containing polysaccharide such as trehalose, and the like; a method of suppressing aggregation of mammalian stem cells, containing suspending the mammalian stem cells in an aqueous physiological solution containing polysaccharide; an inhibitor of a decrease in the survival rate of mammalian stem cells containing polysaccharide such as trehalose and the like; a method of suppressing a decrease in the survival rate of mammalian stem cells, containing suspending the mammalian stem cells in an aqueous physiological solution containing polysaccharides, and the like.
摘要:
An electric compressor integral with a drive circuit incorporates a compression mechanism section, a motor for driving the compression mechanism section, and a motor drive circuit. A refrigerant gas chamber having a refrigerant gas expansion space, into which refrigerant gas is introduced, is formed between a drive circuit installation section and a motor installation section, by a first partition wall provided on the drive circuit side and a second partition wall provided on the motor side, the side opposite the drive circuit side. The refrigerant gas chamber is interrupted by the first partition wall against the drive circuit installation section and is communicated with the motor installation section by a through hole that is provided in the second partition wall and through which the refrigerant gas can pass. Heat generating components, particularly in the drive circuit, can be easily and effectively cooled, and also on the motor installation side, cooling of the motor and lubrication of a bearing section can be easily and excellently performed.
摘要:
A method of producing lymphocytes characterized by comprising the step of culturing lymphocytes in the presence of a modified recombinant fibronectin fragment which has overlapping parts of the heparin-binding domain of fibronectin. This method makes it possible to achieve a high cell proliferation rate. The lymphocytes obtained thereby are appropriately usable in, for example, adoptive immunotherapy and, therefore, expected as highly useful in the clinical field. Moreover, a novel modified recombinant fibronectin fragment is provided.