Yasuyuki Hidaka

National Agriculture and Food Research Organization | NARO · Institute of Agricultural Machinery

This study proposed a comprehensive evaluation method for rice husk combustion in rural areas. The evaluation was considered with the aspects of economic value of energy as conventional evaluation criterion, environmental impact, and economic value of rice husk charcoal in the recycling system. Inventory analysis was conducted to estimate material...

Changes in physicochemical rice grain properties during cooking were examined using five nonwaxy, J aponica cultivars. The grain moisture increased as temperature increased during heating, although there were slight differences among some cultivars from 30 C to 70 C . A marked decrease in overall firmness was found between 85 C and cooked. A wayuki...

Textural-related property including histological tissue structure changes in rice grain (Oryza sativa L.) during cooking process was investigated in this study. Forty grams of polished grain were added to 60. ml of water, and cooked using the Japanese style cooking method. Rice grains were removed at 30, 50, 70, 85, and 100. °C during cooking, and...

We conducted grain drying tests using exhaust heat from a direct combustion type husk burner (HB) and compared the results with those of a conventional system using a kerosene burner (KB). The thermal efficiency of the direct combustion type HB was high, and 88 to 90% of the energy from husk combustion was available for grain drying. Grain drying c...

We have developed a near-infrared (NIR) spectrometer mountable on a head-feeding combine for measuring rice protein in real time while harvesting. The developed sensor employs reflectance optics instead of the more usual transmittance optics because (1) it operates under severe vibration and dust conditions; (2) it performs measurements in high moi...

The aim of this study was to control microorganisms that cause grain degradation using ultraviolet (UV) sterilization, as a method that is eco-friendly and safe for storage without the need for postharvest application. In order to obtain practical ultraviolet sterilization, we manufactured recirculating grain sterilization equipment that uses UV ir...

The aim of this study was to control microorganisms that cause grain degradation using ultraviolet (UV) sterilization, as a method that is eco-friendly and safe for storage without the need for postharvest application. In order to obtain practical ultraviolet sterilization, we manufactured recirculating grain sterilization equipment that uses UV ir...

We developed a far-infrared radiation (FIR )grain dryer , with the FIR body built into a recirculating dryer that is used widely in Japan. This dryer converted thermal energy into FIR by heating a FIR body with a kerosene burner. Furthermore, exhaust heat was reused to increase drying efficiency. Using this method, we reduced electricity consumptio...

Satellite image interpretation for LANDSAT/TM and MOS-1 data was conducted for identification and area estimation of rice fields for Hishikari Town in Kyushu Island near Kagoshima City, Japan. The results were confirmed by video-recorded aerial photographs and by ground observations. The rice field identification, which was carried out by computer-...

Mt. Sakurajima is one of the most active volcanic mountains in Japan. It causes severe damage to the surrounding living environment by erupting huge amount of volcanic ash. The importance of this was realized to evaluate the effects of falling ash over agricultural fields, forests and cities using this Remote Sensing Techniques. The changes in the...