Abstract: The method for manufacturing a tissue section, which is used for a sample for observation by a microscope, comprises the steps of slicing an organism specimen (12), whose form has been fixed by freezing or by using an embedding agent, along a slicing surface, characterized by: adjusting a distance between the slicing surface of the organism specimen (12) and one side of a tape (32) and a temperature difference between the organism specimen (12) and the tape (32) when the slicing of the organism specimen (12) is started, thereby a tip part of the tissue section (16) curling to the outside of the slicing surface of the organism specimen (12) is allowed to adhesively abut on one side of the tape (32) running apart from the slicing surface of the organism specimen (12); and running the tape (32) at a speed in synchronism with a slicing speed of the tissue section (16) after the tip part of the tissue section (16) is allowed to adhesively abut on the one side of the tape (32), thereby the entire tissue section (16

Abstract: The method for manufacturing a tissue section, which is used for a sample for observation by a microscope, comprises the steps of slicing an organism specimen (12), whose form has been fixed by freezing or by using an embedding agent, along a slicing surface, characterized by: adjusting a distance between the slicing surface of the organism specimen (12) and one side of a tape (32) and a temperature difference between the organism specimen (12) and the tape (32) when the slicing of the organism specimen (12) is started, thereby a tip part of the tissue section (16) curling to the outside of the slicing surface of the organism specimen (12) is allowed to adhesively abut on one side of the tape (32) running apart from the slicing surface of the organism specimen (12); and running the tape (32) at a speed in synchronism with a slicing speed of the tissue section (16) after the tip part of the tissue section (16) is allowed to adhesively abut on the one side of the tape (32), thereby the entire tissue section (16

Abstract: A composite piston and method for forming such a piston for a reciprocating machine such as an internal combustion engine. A blank is formed from a pair of dissimilar alloys, one of which has substantially greater properties such as strength or abrasion resistance. The blank is forged into a piston in such a way that the two materials are bonded together in the forging process. The higher strength and/or abrasion resistance material forms at least a part of the outer surface of the piston in areas where the better properties are required. The other material backs up the higher strength or hardness material in necessary areas so as to provide an integral structure that has lightweight, low costs and nevertheless the desired properties. Various physical constructions and forming operations are disclosed.

Abstract: A feature of the invention resides in a plating arrangement for a piston that reciprocates within a cylinder. The piston includes a generally cylindrical piston body. The piston body includes a piston head with a nickel plating and a piston skirt with a tin plating provided at the circumference of the piston body. At least one piston ring groove with a molybdenum disulfide plating is provided in the piston skirt at an upper portion of the piston body. A piston ring with a chromium and resin layer is disposed in each of the piston ring grooves. The piston body includes a piston pin hole that defines an inner diameter surface of the piston. The inner diameter surface has a molybdenum disulfide plating. The plating arrangement for the piston enhances lubrication of the piston.

Abstract: A number of embodiments of piston pin piston connections and lubricating arrangements for lubricating the piston pin. The piston pin connections are such so as to minimize localized wear on the piston. The lubricating arrangement is configured so as to deliver lubricant toward the piston pin and piston for cooling.

Abstract: A lubricating oil composition for two-stroke cycle cylinder injection engines contains as essential ingredients: (A): a base oil containing (1) 10-30% by mass of polybutene with number-average molecular weight 250-350 on the basis of a total amount of the base oil, (2) 30-60% by mass of polybutene with number-average molecular weight 450-550 on the basis of the total amount of the base oil, and (3) 15-40% by mass of mineral oil and/or a synthetic oil, which is other than polybutene, with kinematic viscosity 2-35 mm.sup.2 /s at 100.degree. C., on the basis of the total amount of the base oil; and (B): 2-15 parts by mass of alkylaminophenol having an alkyl group with 8-400 carbon atoms relative to 100 parts by mass of the base oil.

Abstract: A disclosure is made of a subterranean connecting method and a connecting apparatus therefor which are suitable for use when two shield machines are used to excavate a pair of tunnel sections from both ends of a tunnel, and the tunnel sections are connected to each other in mid course. During underground connection, it is important to secure sealing and water retarding with respect to soil and water pressure exerted by the ground in the vicinity of the connecting section. For this purpose, in the connecting apparatus, a penetration ring is arranged in one of the shield machines, and a penetration chamber in which the penetration ring is accommodated is arranged in the other shield machine. Both the both shield machines face each other with a slight gap remaining therebetween and, subsequently, the penetration ring is moved forward and penetrates into the penetration chamber of the mating shield machine. By this penetration, the area between both the shield machines are closed by the penetration ring.

Abstract: A plurality of open-top sample tubes, each containing a simple liquid containing cells to be treated, are removably mounted on a disklike sample carrier which is rotatable about a vertical axis for centrifuging the samples. Disposed above the sample carrier are a set of fixed reagent supply nozzles for dropping a desired reagent or reagents into the sample tubes and at least one supply-discharge nozzle movable into and out of the successive sample tubes. A hydropneumatic circuit is coupled to the supply-discharge nozzle for intimately intermingling the samples and the reagents and for rinsing the supply-discharge nozzle and other required parts. In an alternate embodiment a single supply-discharge nozzle is employed for reagent supply into the sample tubes, for intermingling the samples and the reagents, and for rinsing.

Abstract: A combustion chamber and method of operating a diesel engine to insure maximum air utilization. The engine has a main chamber and a subchamber that communicates with the main chamber through a communication passageway. Fuel injection into the subchamber is begun at a time when the throat area of the engine by which the main chamber communicates with the communication passageway is equivalent to approximately the effective flow area of the communication passageway so as to insure maximum air utilization.