摘要:
In a method for producing gas turbine fuel through the step of modifying heavy fuel oil with the use of an asphaltene-insoluble solvent, the utilization factor of the heavy fuel oil usable as gas turbine fuel is increased by making asphaltene selectively removable. A solvent having a specific inductive capacity in the range of 1.4 to 2.0 is used as the asphaltene- insoluble solvent. In particular, water controlled in temperature and pressure so as to have a specific inductive capacity in the above range is used as the asphaltene-insoluble solvent. By using such a solvent, an asphaltene component contained in the heavy fuel oil can be selectively removed and power generation can be performed while utilizing 95% or more of the heavy fuel oil.
摘要:
An improved semiconductor laser device is provided which has a small distance between laser light emitting spots. Such laser device comprises i) a first light emitting element including a laser oscillation section provided with a ridge waveguide and formed by forming a group-III nitride semiconductor film on a substrate, an insulating layer and an ohmic electrode layer, ii) a second light emitting element including a laser oscillation section provided with a waveguide and formed by forming III–V compound semiconductor film, an insulating layer and an ohmic electrode layer. By virtue of the adhesive metal layer interposed between the two ohmic electrode layers, the two laser oscillation sections are combined together, thereby forming the improved semiconductor laser device which has a small distance between laser light emitting spots of the two laser oscillation sections.
摘要:
The information storage apparatus has an internal structure and arrangement of fans in consideration of the cooling effect. The capacity of the entire apparatus can be smaller than that of a conventional apparatus and an optimum air channel can be formed so as to maintain reliability of performance, life and the like of components at high temperatures. Further, relatively speaking, a module which does not produce a large amount of heat and does not require cooling is provided in a front stage of the channel while a module including heat-producing components and a cooling fan is provided in a rear stage of the channel.
摘要:
An object is to effectively cool down an electronic equipment which is face with height limitations and tends to readily increase in heat generation amount to thereby provide the reliability required. The interior of a chassis of a control unit is partitioned by a back board into a front side space and a rear side space. In the rear side space, two control modules are attached so that these are stacked up and down, while two fan modules and a single duct member are attached in the front side space. Each fan module has two fans as built therein. A cooling air stream or “wind” from each fan flows into the lower-side control module through the duct member and others, whereas a cooling wind from the other fan flows into the upper-side control module. Even when either one of the fan modules goes down during operation, it is still possible by using the remaining fan module to cool down the both control modules.
摘要:
The semiconductor light-emitting element uses a compound semiconductor quantum well structure comprising a well layer, and barrier layers between which the well layer is sandwiched, as an active layer. In the adjacent well layer and barrier layers of the semiconductor light-emitting element, the well layer has in part a doped well region to which an n-type impurity is added at the interface with the barrier layer on the electron injection side, and in the vicinity of this interface, and the barrier layer has a doped barrier region to which the n-type impurity is added at least at the interface and in the vicinity of this interface.
摘要:
The invention is intended to produce high-pressure light fuel gas with good combustibility by contacting and reacting high-temperature, high-pressure water and heavy oil with each other in a contact-reaction unit to extract light oil components from the heavy oil and to remove metals. The high-temperature, high-pressure water and the heavy oil are introduced to the contact-reaction unit for contact and reaction with each other therein. Heavy oil components not dissolved in the high-temperature, high-pressure water are separated by precipitation from hydrocarbon gases and light oil components which are dissolved in the high-temperature, high-pressure water. The separated heavy oil components are burnt or incinerated without any further modification.
摘要:
A nitride compound semiconductor laser, of which driving voltage is low and transverse mode of light is stable, having a plurality of crystal layers made of a group III nitride compound semiconductor expressed by the formula (AlGa1-x)1-yInyN (0≦x≦1, 0≦y≦1). The layers include an active layer-side guide layer which is adjacent to an active layer in the crystal layers of the group III nitride compound semiconductor and made of Alx′Ga1-x′-y′Iny′N (0≦x′≦1, 0≦y′≦1), a current constricting AlN layer deposited on said guide layer and having a stripe-shape aperture, an electrode-side guide layer made of Alx″Ga1-x″-y″Iny″N (0≦x″≦1, 0≦y″≦1) and deposited filling the aperture of the current constricting layer, and a clad layer made of AluGa1-u-vInvN (0≦u≦1, 0≦v≦1) and deposited on the electrode-side guide layer.
摘要翻译:驱动电压低且横向模式稳定的氮化物化合物半导体激光器具有由式(AlGa1-x)1-yInyN(0≤...)表示的由III族氮化物化合物半导体构成的多个晶体层, x <= 1,0 <= y <= 1)。 这些层包括与III族氮化物化合物半导体的晶体层中的有源层相邻的有源层侧引导层,由Al x Ga 1-x'-y'In y'N(0 <= x' = 1,0 <= y'<= 1),沉积在所述引导层上并具有条形孔的电流收缩AlN层,由Al x''Ga 1-x“y”形成的电极侧引导层, “Iny''N(0 <= x”<= 1,0,0 <= y“<= 1),并填充电流收缩层的孔径,以及由AluGa1-u-vInvN(0 <= u <= 1,0 <= v <= 1)并沉积在电极侧引导层上。
摘要:
A nitride semiconductor light emitting device having preferable light emitting characteristics even if dense threading dislocations extend through single crystal layers. The nitride semiconductor light emitting device includes an active layer obtained by depositing group-3 nitride semiconductors, and a barrier layer disposed adjacent to the active layer and having a greater bandgap than that of the active layer, the active layer having barrier portions which surround the threading dislocations and are defined by interfaces enclosing the threading dislocation and which are made of the same material as that of the barrier layer.
摘要:
The apparatus reads an original by an image reader, and if it recognizes caption(s) included in the original, stores a page number of the original into a memory, thereafter, performs copying based on the stored page number such that the original page including the caption is transferred onto the front side of a recording sheet.
摘要:
A still image reproducing system includes reproducing structure for reproducing still image data recorded on a recording medium. Instructing circuitry is provided for issuing instructions to cause movement of a reproducing position of the reproducing structure. Circuitry is provided for measuring a time interval between the instructions issued by the instructing circuitry. Control circuitry is provided for selecting one of a plurality of operation modes of the reproducing structure according to the time interval measured by the measuring circuitry. The operation modes include a first mode in which still image data reproduced by the reproducing structure is muted, and a second mode in which still image data reproduced by the reproducing structure is not muted.