Abstract: An object of the present invention is to provide large-sized zinc oxide particles that show, when incorporated to a cosmetic product, excellent properties including transparency, infrared reflection, and the like without deteriorating the feel; and also a cosmetic containing the same. The zinc oxide particles having an average particle diameter of 3 to 20 ?m, an average friction coefficient of 3 or less, a total visible light transmittance of 85% or more, and a near-infrared reflectance of 80% or more.

Abstract: The present disclosure provides a zinc oxide particle that can be used more suitably than common zinc oxide in the application such as an exoergic filler and the like, and can be used in the other applications. A zinc oxide particle having a median size of 1 to 30 ?m and D90/D10 of 4 or less is provided.

Abstract: The present disclosure provides a zinc oxide particle that can be used more suitably than common zinc oxide in the application such as an exoergic filler and the like, and can be used in the other applications. A zinc oxide particle having a median size of 1 to 30 ?m and D90/D10 of 4 or less is provided.

Abstract: The invention provides a zinc oxide particle having suppressed surface activity which gives safe and effective UV ray shielding ability (especially at longer wavelengths) to a variety of products such as resin molds, coating compositions or cosmetics, and a process for the production of the same. The zinc oxide particle of the invention has on the surface a cover layer formed of zinc silicate in an amount of 0.5-50% by weight in terms of zinc silicate (Zn2SiO4) relative to the zinc oxide. The zinc oxide particle which contains solid solution iron or cobalt therein as well as a cover layer formed of zinc silicate has effective UV ray shielding ability at much longer wavelengths while it is suppressed in the surface activity.

Abstract: The pulse control circuit comprises an up-counter, a pulse generator connected to supply a pulse train having a fixed repetition rate to the up-counter to cause it to count-up to a preset count, a detector connected to the output of the up-counter, a gate circuit responsive to the output of the detector for controlling the input of a preset count to the up-counter, an up-down counter connected to supply the preset count to the up-counter through the gate circuit, a variable pulse generator connected to a count modifying input terminal of the up-down counter for changing the count stored therein, means for storing a preset count in the up-down counter, and means for varying the repetition rate of the output pulses supplied by the variable pulse generator and for controlling the direction in which the up-down counter operates to either add to or substract from a preset count stored in the up-down counter to thereby control the period between the output pulses produced by the pulse control circuit.

Abstract: In a simulator of the class which is operated repeatedly according to the same program there are provided a mini-computer, a time axis controller and a communicating device. The time axis controller provides a pulse to the mini-computer for controlling the timing of the programmed processing operation thereof and is provided with means for manually varying the period of the pulse thereby to vary the timing of the programmed processing operation while observing the content of the display provided by the communicating device.