Abstract: Provided is modified brown rice which can be cooked in completely the same manner as that of the white rice and is excellent in taste, mouthfeel, and digestion and absorption, while containing almost the same nutrient components as that of so-called brown rice which is obtained by removing only the rice hulls from the rice plant. The epidermal layer of brown rice is polished to remove the pericarp and a part of the seed coat underneath for partially exposing the tubular cell tissue covered under the seed coat to the surface of brown rice. At the same time, the oil and fat components inside the tube in the tubular cell tissue is removed to make a hollow inside the tube. Thereby, the modified brown rice can be achieved.

Abstract: A vessel comprising a windmill mechanism having a variable pitch propeller, a generator rotatably driven by the windmill mechanism, a storage battery for storing current generated by the generator, a screw rotatably driven by the windmill mechanism, a motor to rotatably drive the screw by means of discharge of the storage battery, a control device for propeller pitch, a direction sensor for determining the natural wind direction with respect to the vessel, and a rotor direction control device to keep the propeller of the windmill in a direction of the natural wind as sensed by said direction sensor. Such a windmill vessel is able to cruise by either one of the wind force, the wind force and electric power, or electric power in response to the direction of the natural wind. The influence of the outlook wind (self cruise wind) by forward movement of the vessel is evaded, and the propeller of the windmill is always kept in the direction of the natural wind.