A new radiation measurement method which has extremely high measurement efficiency is developed for low energy beta-rays. Samples can measure within a short time by this method. Also, there are no radioactive waste fluid. Application is anticipated as a new detector of a conventional equipment.
Bisphenol A (BPA) is thought to be an endocrine disruptor which can mimic estrogen and may lead to negative health effects. BPA is a colorless solid that is soluble in organic solvents, but poorly soluble in water. Specific domain of protein disulfide isomerase (PDI) is known to bind BPA. In order to develop a stable BPA trapping module, we focused on thermostable PDI (Tk-PDI) from hyperthermophilic archaeon Thermococcus kodakarensis. Thermostable proteins generally show tolerance to various denaturants, such as organic solvents due to significantly low unfolding rates. BPA was bound to Tk-PDI and Tk-PDI was not denatured even at 96℃. Tk-PDI was appeared applicable to trap BPA.
To achieve low energy consumption of a network, it is effective to power off idle network devices resulting from traffic aggregation. We developed an energy efficient power control method with keeping high communication quality against demand fluctuation.
Calculation for fluid motion precisely in a short time in region with very large aspect ratio such as pipe, tunnel or river is difficult. A specialized numerical method for fluid motion in such regions is developed.