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Now showing items 1 - 16 of 190

  • TAPERED ROLLER BEARING

    Provided is a suitable tapered roller bearing that causes little torque loss and generates little heat as a result of friction and that makes it possible to shorten warm-up operation time. When a reference radius of curvature for a large end surface (16) of a roller (12) is denoted by R and the distance from the vertex of the cone angle of the roller (12) to a large flange surface (18) of an inner ring (13) is denoted by RBASE, the value of R/RBASE is 0.75-0.87. The distance from the outermost surface of at least one of an outer ring (11), the inner ring (13), and a plurality of the rollers (12) to a bottom section of a nitrogen-enriched layer is 0.2 mm or more. Crowning is formed on the rolling surfaces (12A) of the rollers (12). In a y-z coordinate system in which the generating line of the rolling surface of a tapered roller serves as the y-axis and a direction orthogonal to the generating line serves as the z-axis, the sum of the drop amount of the crowning is expressed using the following: design parameters K1, K2, zm; a load Q; the length L of an effective contact section of the rolling surface in the tapered roller in the generating line direction; an equivalent modulus of elasticity E'; the length a from a starting point taken on the generating line of the rolling surface of the tapered roller to the end of the effective contact section; and the formula A = 2K1Q/πLE'.
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  • TAPERED ROLLER BEARING

    In a tapered roller bearing (10), a retainer (14) includes a plurality of trapezoidal pockets, and a plurality of rollers (12) are accommodated and held in the pockets. A notch is provided in a pillar portion on a narrow side of each pocket of the retainer, with a width provided toward a large annular portion from a boundary between a small annular portion and the pillar portion. The configuration is such that lubricating oil flowing in toward an inner race (13) side from a diametrically inner side of the retainer escapes quickly from the notch toward an outer race (11) side on a diametrically outer side. A distance from an outermost surface to a bottom portion of a nitrogen-enriched layer in at least one of the plurality of rollers (12), the outer race (11) of the rollers (12) and the inner race (13) of the rollers (12) is at least equal to 0.2 mm. Logarithmic crowning is formed on a rolling surface (12A) of each roller (12).
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  • TAPERED ROLLER BEARING

    Provided is a tapered roller bearing that has a long service life and high durability. The tapered roller bearing is provided with an outer ring, an inner ring, and a plurality or rollers (1012) that are tapered rollers. The outer ring has an outer ring raceway surface in the inner circumferential surface thereof. The inner ring has an inner ring raceway surface in the outer circumferential surface thereof and is arranged inside the outer ring. The plurality of rollers (1012) are arranged between the outer ring raceway surface and the inner ring raceway surface and comprise a rolling surface that is in contact with the outer ring raceway surface and the inner ring raceway surface. At least one of the outer ring, the inner ring, and the plurality of rollers comprises a nitrogen-enriched layer (1012B) formed on the outer ring raceway surface, the inner ring raceway surface, or the surface layer of the rolling surfaces. The prior austenite grain size in the nitrogen-enriched layer (1012B) by grain size number according to the JIS standard is 10 or more. The distance T1 from the outermost surface of the surface layer to a bottom section of the nitrogen-enriched layer (1012B) is 0.2 mm or more. Logarithmic crowning (1022A) is formed on the rolling surfaces of the rollers (1012).
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  • ORGANIC EL PANEL AND METHOD FOR PRODUCING SAME

    In order to provide an organic EL panel, and a method for producing same, that makes it possible to have excellent moisture resistance and ensure sealing substrate-side transparency, provided is an organic EL panel comprising an element formation substrate (1) on which an organic EL element (2) is formed, a sealing substrate (3), and a sealing layer interposed with no gaps between the element formation substrate (1) and the sealing substrate (3), wherein: the sealing layer is constituted of an inner hygroscopic agent (4) covering the organic EL element (2), an outer peripheral hygroscopic agent (5) provided along an outer peripheral edge of the inner hygroscopic agent (4), and a marginal adhesive (6) provided along an outer peripheral edge of the outer peripheral hygroscopic agent (5); the inner hygroscopic agent (4) is constituted of an ultraviolet curable or thermosetting gel-like resin and a desiccant added at a weight ratio of 0.3 to less than 10% to the resin; and the outer peripheral hygroscopic agent (5) is constituted of the aforementioned resin and a desiccant added at a weigh ratio of 10 to 80% to the resin.
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  • Role of early capsule endoscopy for acute GI bleeding

    Aoki, Tomonori   Nagata, Naoyoshi   Watanabe, Kazuhiro   Niikura, Ryota   Yamada, Atsuo   Koike, Kazuhiko   Uemura, Naomi   Itoi, Takao   Kawai, Takashi  

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  • Time Course of Sickness Symptoms with HMD Viewing of 360-degree Videos

    Häkkinen, Jukka   Ohta, Fumiya   Kawai, Takashi  

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  • Pseudo-haptic by stereoscopic images and effects on muscular activity

    Kawai, Takashi   Ohta, Fumiya   Kim, Sanghyun   Morikawa, Hiroyuki  

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  • Key Issues Associated with Helicobacter pylori Eradication

    Kawai, Takashi   Moriyasu, Fuminori   Tsuchida, Akihiko  

    Eradication of Helicobacter pylori causes improvement of gastric atrophy and intestinal metaplasia. Gastric acid secretion levels in corpus predominant gastritis increase after eradication. These changes can increase the risk of reflux esophagitis and low-dosage aspirin ulcers. Although eradication may reduce the overall risk of gastric cancer, a certain degree of risk remains, related to the extent of atrophy and intestinal metaplasia. Many post-eradication gastric cancers are the early depressed type, with low levels of epithelial atypia, and therefore can be difficult to distinguish endoscopically from benign erosion. Further research is required in this area. (C) 2016 S. Karger AG, Basel
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  • Analysis of body pressure distribution on car seats by using deep learning

    Mitsuya, Reiko   Kato, Kazuhito   Kou, Nei   Nakamura, Takeshi   Sugawara, Kohei   Dobashi, Hiroki   Sugita, Takuro   Kawai, Takashi  

    This study aimed to extract information from body pressure distribution, including comfort, participant body size, and seat characteristics by using supervised deep learning, and body pressure characteristics corresponding to sensory evaluation by using unsupervised deep learning. Body pressure data of 18 participants and 19 kinds of car seats were used for the analysis. Sensory evaluation of 9 items concerning cushion characteristics and seat comfort was conducted. From the analysis, we determined that body size and car seats could be classified with high precision by using body pressure distribution data. For the sensory evaluation items, the correct answer rate was high. By examining the importance of the cells of the mat, the features of the body pressure mat at the seat cushion and backrest, body size, car seat, and parts related to sensory evaluation could be determined in detail. The study findings can be applied in the development of car seats.
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  • Analysis of body pressure distribution on car seats by using deep learning

    Mitsuya, Reiko   Kato, Kazuhito   Kou, Nei   Nakamura, Takeshi   Sugawara, Kohei   Dobashi, Hiroki   Sugita, Takuro   Kawai, Takashi  

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  • Key Issues Associated with Helicobacter pylori Eradication

    Kawai, Takashi   Moriyasu, Fuminori   Tsuchida, Akihiko  

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  • SKIN CLEANSER COMPOSITION

    Provided is a skin cleanser composition that comprises the following components (A), (B), (C), (D), and (E): 0.1-25 mass% of an ether oil (A) that is a liquid at 25 °C; 0.003-1 mass% of a water-soluble polymer (B) that includes acrylic acid or methacrylic acid as a constituent unit thereof; 1-30 mass% of a hydrocarbon oil (C) that has a viscosity of 15 mPa·s or less at 30 °C; 60-95 mass% of water (D); and 0.49 mass% or less of a non-ionic surfactant (E) having an HLB that is greater than 9. The mass ratio (B)/(A) of the components (A) and (B) is 0.0001-0.1 and the mass ratio (A)/((A)+(C)) of the components (A) and (C) is 0.05-0.9.
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  • INTERNAL COMBUSTION ENGINE CONTROL DEVICE

    This control device is applied to a 3-cylinder internal combustion engine (11) mounted in a vehicle (1) and connected such that a first motor-generator (12) can transmit power to a crankshaft (40). When stopping the internal combustion engine (11), a vehicle control device (30) controls output torque of the first motor-generator (12) such that the internal combustion engine (11) stops in the state with a preset specific cylinder in the compression stroke. The specific cylinder is such that a relation is brought about of mutual weakening between the vibration component that occurs due to precession in the internal combustion engine (11) when the internal combustion engine (11) has been started from the state with said specific cylinder in the compression stroke, and the vibration component predicted to occur in the vehicle (1) if the torque applied to crankshaft (40) during starting of the internal combustion engine (11) were assumed to be imparted to the crankshaft (40) in a state in which the piston (41) and the connecting rod (42) of the cylinders (11a) were detached.
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  • DEPARTURE PREVENTION SUPPORT APPARATUS

    A departure prevention support apparatus includes a lane boundary sign recognizing part configured to recognize a lane boundary sign; a departure detecting part configured to detect a departure of the host vehicle from the lane boundary sign; and a target travel line generating part configured to generate a target travel line if the departure detecting part detects the departure, wherein the target travel line includes a first target travel line for reducing the departure, and a second target travel line for modifying a direction of the host vehicle whose departure has been reduced after having traveled along the first target travel line; wherein the target travel line generating part sets one of the first target travel line and the second target travel line such that it is substantially straight, depending on a direction of the departure and a direction of a curvature of the lane boundary sign.
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  • CONTROL DEVICE FOR HYBRID VEHICLE

    An electronic control unit is mounted on a vehicle including an internal combustion engine and electric motors, each of which is connected to a driving shaft to be capable of transmitting power. The electronic control unit is configured to compute compensation torque reducing a pulsation component of engine torque of the internal combustion engine and command a value in which required torque of the electric motor is combined with the computed compensation torque to the electric motor as a torque command value of the electric motor. The electronic control unit is configured to correct the torque command value so that the value opposite in sign to an average torque command value is not commanded to the electric motor when the average torque command value is smaller than an amplitude of the torque command value.
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  • TSUNAMI MONITORING SYSTEM

    Provided is a tsunami monitoring system having a transmission antenna for emitting, in the form of radio waves towards the sea, a transmission signal for detecting tsunamis, and a reception antenna for receiving, in the form of a reception signal, reflected waves reflected from a tsunami, wherein the system includes: a signal generating means for generating the transmission signal having a prescribed frequency; a signal processing unit for generating a beat signal representing the frequency difference of the transmission signal and the reception signal; and a wave height estimating unit that divides the radio wave radiation area into a plurality of areas, calculates, on the basis of the beat signal, the flow velocity of the tsunami on the ocean surface in each of the areas, and estimates the wave height of the tsunami from the flow velocity so calculated.
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