Abstract: A cloned DNA encoding phosphoenolpyruvate carboxykinase of a C.sub.4 plant is disclosed. The DNA according to the present invention encodes the amino acid sequence shown in SEQ ID NOS: 1-6 in Sequence Listing or the same amino acid sequence as shown in SEQ ID NOS: 1-6 except that one or more amino acid is added, deleted, inserted or substituted, with the proviso that the polypeptide having this amino acid sequence has phosphoenolpyruvate carboxykinase activity.

Abstract: A method of manufacturing an aluminum-base composite disc rotor comprising the steps of preparing a rough-shaped disc rotor made of a mixture of aluminum powder or aluminum alloy powder with reinforcing particles or aluminum alloy, placing a mixture of aluminum powder or aluminum alloy powder with reinforcing particles or a preform made thereof on each of fixed positions of the rough-shaped disc rotor, and heating the mixture or the preform to at least a region of mashy state temperature to mold under pressure. Thereby the heat resistance and the wear resistance of the aluminum-base composite disc rotor for light-duty cars and industrial machinery are improved.

Abstract: A silver halide photographic emulsion comprising a hydrophilic colloid having dispersed therein tabular silver halide grains having an aspect ratio of at least 2, the grains comprising a matrix comprising at least 50 mol % silver bromide ions based on silver ions, and a high silver chloride layer on the matrix, the high silver chloride layer comprising at least 50 mol % chloride ions based on silver ions and forming a substantially uniform plane on the matrix, wherein at least 50 mol % of the high silver chloride layer is present on two basal plane surfaces of the matrix.The emulsion has improved pressure properties which are suited for rapid processing, and minimized grain aggregation and excellent suitability for preparation.

Abstract: A conveyor trolley with a pair of wheels rolling on a flat upper face of an upper end rail portion of a guide rail, one wheel acting as a drive wheel and attached to an output shaft of a speed-reducing unit mounted on a trolley body movably supported on the guide rail, and a motor for driving the output shaft via a speed-reducing mechanism in the speed-reducing unit, the trolley having a collector unit for supplying power to and communicating control signals with the motor, guide rollers for laterally binding and positioning the upper rail portion and a lower rail portion of the guide rail, a wheel securing unit disposed between an annular concave portion defined in a boss of the drive wheel and the output shaft, the wheel securing unit including an outer ring, an inner ring having a wedge-shaped cross section to be engaged into the outer ring and a tightening member for securing the wheels to the output shaft by reducing an inner diameter of the inner ring and by enlarging an outer diameter of the outer ring

Abstract: An alloy for disk rotor utilized in disk brake is disclosed, which contains 2.3 to 3.0 wt. % of silicon, 1.0 to 3.0 wt. % of manganese, 0.2 to 1.0 wt. % chromium, 0 to 2.0 wt. % of copper and 3.7 to 4.2 wt. % of carbon, the remainders being inevitable impurities and iron.