Abstract: There is provided an ink composition that can form a color filter pixel unit with high external quantum efficiency. An ink composition containing light-emitting nanocrystal particles, light-diffusing particles, and at least two monomers with an ethylenically unsaturated group, wherein the at least two monomers include two monomers with Hansen solubility parameters ?d, ?p, and ?h that satisfy the following conditions: 16.0 MPa0.5??d<18.0 MPa0.5; 2.5 MPa0.5??p<5.5 MPa0.5; 2.5 MPa0.5??h<8.0 MPa0.5.

Abstract: A method for recovering a valuable substance is provided. The method includes: a thermal treatment step of thermally treating a target containing a valuable substance while supporting a target storing unit, in which the target is stored, by a supporting unit that can support the target storing unit, wherein the thermally treating includes heating a gas present in a region, in which the supporting unit is positioned, by a flame for thermally treating the target such that the target storing unit is not contacted by the flame; and a valuable substance recovering step of recovering the valuable substance from a thermally treated product of the target obtained in the thermal treatment step.

Abstract: In a rotating machine with employment of a sensor-less DC brushless motor, a terminal voltage of a motor is corrected in a phase corrector by using a motor phase current signal. At this time, the terminal voltage is processed in an integrator and a comparator so as to be converted into an ON/OFF signal having a duty ratio of 1:1. Then, a rotation signal is produced based on an induced voltage which is generated by rotating a permanent magnet rotor, so that a rotation sensor is no longer required. On the other hand, an output derived from the phase corrector is entered as a 1-pulse/1-rotation output signal into a PLL circuit. The PLL circuit contains a phase comparator, a low-pass filter, an oscillator, and a counter. The PLL circuit frequency-divides the 1-pulse/1-rotation output signal. The sine wave data are stored into a ROM with respect to each of the frequency-divided signal positions. The unbalance vibrations of the magnetic bearing are controlled every frequency-divided signal.