摘要:
In a recessed structure MESFET, an active layer (n-type layer) 2 is provided on a high resistance GaAs substrate 1, a pair of contact layers (n.sup.+ -type layers) 31, 32 is provided on the active layer 2, a source electrode 6 is provided on one contact layer 31, a drain electrode 7 is provided on the other contact layer 32 and a gate electrode 5 is provided on the active layer 2 to achieve a recessed structure. A semiconductor layer 4 having a lower impurity density than that of the contact layer 31, 32 is formed at the recess edge portion at at least drain side to alleviate the concentration of the electric field and current there to suppress the generation of electron-holes pairs by collision ionization to reduce the damage to the crystal lattice by non-luminescence recombination of the electron-holes thus preventing the degradation of the FET characteristics.
摘要:
In a printer for passbooks or the like, a passbook or the like, which is brought in on a transfer path, is stopped at the position of a page-turning roller, where a sheet is turned over by the operation of the page-turning roller. When a sheet is turned over by the page-turning roller, at a position separate from a start position of turning over of a sheet, a passbook or the like undergoes an initial deformation in a out-of-plane direction so that the passbook is bent in a first-order mode. By this initial deformation, a sheet can be turned over steadily. Such a turnover of the sheet can be effected in conjunction with utilizing an optical system which provides an image of the three-dimensional deformation pattern of the passbook which is processed. In accordance with this pattern a decision is made whether or not the out-of-plane deformation of the passbook is more than a specified amount. In the vicinity of the transfer path, a page-turning roller is provided and is supported rotatably. In the vicinity of the transfer path there is also provided a push guide which gives a deformation to the passbook when a sheet is turned over. Based on a frictional control of the page-turning operation, a steady turnover of the sheet can be effected regardless of buckling resistance force of the sheet to be turned over.
摘要:
An air conditioning system for an automotive vehicle includes a duct through which conditioned air is directed into a compartment for passengers. A control device is associated with the duct for operating in a first mode discharging the conditioned air in the form of concentrated currents toward the passengers, in a second mode discharging the conditioned air in the form of diffused currents toward the passengers, and in a third mode in which switching is performed between the first and second modes at variable time intervals. One of the first, second and third modes is selected according to sensed values of compartment temperature and insolation intensity.
摘要:
An implant material includes: a base material 10; and a carbonaceous film 20 provided on a surface of the base material 10. The carbonaceous film 20 includes carbon atoms, oxygen atoms, and nitrogen atoms in a surface thereof, and the carbon atoms are bonded to the oxygen atoms to form carboxyl carbon and carbon having a single bond with oxygen. In the surface of the carbonaceous film 20, a content of nitrogen atoms is greater than or equal to 8.0 at. %, a content of carbon having a single bond with oxygen is greater than or equal to 5.4%, and a content of carboxyl carbon is less than or equal to 3.1%.
摘要:
A coating composition which is excellent in crack resistance, alkali resistance and solvent resistance while having a high hardness and which is excellent in recoatability, anti-graffiti property, and removability of graffiti is provided. The coating composition according to the present invention comprises as the essential components, (a) a liquid organosiloxane compound which is a mixture of (a-1) a liquid organosiloxane compound having an alkoxy group content of 20 to 60% by mass and (a-2) a liquid organosiloxane compound having an alkoxy group content of 5% by mass or more and less than 20% by mass, in which an (a-1)/(a-2) mass ratio is 10/90 to 60/40, (b) an organometallic catalyst, (c) at least one compound selected from among alkoxy group-containing organosilane compounds having a primary or secondary amino group, amino-modified silicone oils, and amino group-containing organosiloxane compounds, and (d) at least one compound selected from among compounds having two or more glycidyl groups in one molecule, glycidyl group-containing silane compounds and glycidyl group-containing silicone oligomers.
摘要:
A magnetic separation filtering and cleaning apparatus for adding flocculant and magnetic powder to raw water containing pollutant particles to form magnetic floc in treated fluid and separating and removing the magnetic floc from the treated fluid, comprising: a magnetic field generation device being provided in a rotating body for suctioning the magnetic floc on a surface of the rotating body from the treated fluid containing the magnetic floc, a magnetic field rotating device for rotating the magnetic field generation device, a sludge recovery device for separating sludge including the magnetic floc mechanically from the surface of the rotating body of the magnetic field generation device; and a filtering device having a rotating net for filtering out the magnetic floc from the treated fluid including the magnetic floc and flowing down the treated fluid filtered through the rotating net.
摘要:
A drug-releasable medical device contains a controlled drug-release composition comprising 100 parts by weight of an organic polymeric material which is soluble in an organic solvent and insoluble in water, 5 to 60 parts by weight of a lipid-soluble, low molecular weight release auxiliary agent and 1 to 70 parts by weight of a drug. When the composition is applied on a stent, a catheter, an organ replacement medical device, an artificial organ or the like in the form of coating or the like, the medical device is provided with a drug release function. Argatroban or sarpogrelate hydrochloride or both of them are gradually released from the surface of a stent for treating coronary artery stenosis, for example. In order to exhibit a sustained-release function for a desired period of time, the drug to be gradually released is carried in a polymeric material coated on a surface of a metal forming the stent or in a porous stent substrate.
摘要:
A treatment method of organic compounds included in waste water, comprising the steps of:supplying waste water to an adsorber 2 filled with an adsorbent 3 therein for adsorbing the organic compounds in the waste water by the adsorbent 3 in the adsorber 2, supplying a current between an anode 9 and a cathode 8 in water including an electrolyte in an electrolyzer 6 for electrolyzing the water including an electrolyte, and supplying an electrolyte resulting from electrolysis in the electrolyzer 6 to the adsorbent 3 in the adsorber 2 for contacting the electrolyte with the adsorbent 3, so that the organic compounds adsorbed by the adsorbent 3 are desorbed or decomposed.
摘要:
A freshwater supply system that stores fresh water transported by transport ships in storage devices and takes out the fresh water from the freshwater storage devices at need to use the same. The system comprises management device that puts management information together and sends and receives various information of countries for demand of the fresh water, analysis information of the fresh water, and various information of transportation device for transportation of the fresh water to the countries. Magnitudes of movements, prices, origins of movement, and destinations of movement of the fresh water are decided from the information from the management device.
摘要:
To provide a biocompatible material with a high level of safety at a low cost. The biocompatible material has a polymer synthesized from monomers by an anionic polymerization, wherein the polymer has a ratio (Mw/Mn) of a weight-average molecular weight (Mw) to a number-average molecular weight (Mn) in a range of 1.0 to 1.5, in which the weight-average molecular weight is 40,000 or more, and each of the monomers is represented by a following general formula (1): where R1 is a hydrogen atom or a methyl group; R2 is a C1-C4 alkylene group; and R3 is a C1-C4 alkyl group.