摘要:
A particulate polyolefin molding material is disclosed. The material is comprised of a particulate polyolefin particle having a bulk density of 0.45 g/cc or more and a mean particle size of 150 to 2,000.mu., and a layer comprising a compounding additive and a binder formed on the surface of the particle. The material can be used in producing molded articles without first forming the material into pellets as is conventionally done.
摘要:
Granules containing 60 wt. % or more filler, having such particle size distribution that 90 wt. % or more granular particles have a particle size of (1/3)d.sub.50.sup.b to 3d.sub.50.sup.b (d.sub.50.sup.b : mean particle size of the granules), and being produced by blending (a) 60 to 90 parts by weight of a filler having a mean particle size of 0.05 to 100.mu., (b) 5 to 35 parts by weight of crystalline polyolefin powder having a mean particle size (d.sub.50.sup.a) of 150 to 1,000.mu. and having such particle size distribution that 90 wt. % or more particles thereof have a particle size of (1/2)d.sub.50.sup.a to 2d.sub.50.sup.a, (c) 5 to 35 parts by weight of a binder having a melting point lower than that of said crystalline polyolefin powder by a least 10.degree.C., and optionally, (d) a compounding additive, at a temperature lower than the melting point of the crystalline polyolefin powder and higher than the melting point of the binder, is disclosed.
摘要:
In a power supply apparatus, a power source generates electric power at a predetermined source voltage. The first converter circuit converts the source voltage into a first voltage or a second voltage. The secondary battery is charged with electric power at the first voltage when the first converter circuit outputs electric power at the first voltage. The second converter circuit converts the first voltage of the electric power outputted from the first converter circuit or the secondary battery into the second voltage. The electric load device is supplied with electric power at the second voltage outputted from the second converter circuit. The direct power supply circuit directly supplies electric power at the second voltage outputted from the first converter circuit to the electric load device without passing through the second converter circuit when the first converter circuit outputs the electric power at the second voltage.
摘要:
A chelate resin having a functional group of the formula: ##STR1## wherein R.sub.1 and R.sub.2 are each independently hydrogen, alkyl, aminoalkyl, phenyl or a substituted group thereof and another functional group of the formula: ##STR2## wherein R.sub.3 is amino, alkylamino, polyethylenepolyamino, hydrazo, hydrazino, hydrazono, amidino, guanidino, semicarbazide or a substituted group thereof, has an excellent adsorption capacity for metal ions.
摘要:
A power converter includes a booster circuit, an inverter circuit, a hysteresis control circuit, and a proportional-integral control circuit. The booster circuit boosts DC power of a DC power source. The inverter circuit converts the DC power outputted from the booster circuit into AC power and outputs the AC power to a system. The hysteresis control circuit controls the inverter circuit by hysteresis control so that the AC power can be outputted to the system when an AC voltage of the system is less than a DC voltage of the power source. The proportional-integral control circuit controls the booster circuit by proportional-integral control so that the AC power can be outputted to the system when the AC voltage of the system is larger than the DC voltage of the power source.
摘要:
A DC power supply apparatus includes a charging circuit, which charges a secondary battery of a vehicle from an AC power source device or a DC power source device. The charging circuit includes a non-insulating converter circuit and an insulating converter circuit. A breaker relay disconnects the AC power source device and the charging circuit in an initial charging period to supply a large charging current to the secondary battery by the non-insulating converter circuit. As a result, charging can be performed with high efficiency without the insulation transformer. The breaker relay connects the AC power source device and the charging circuit after the initial charging period. Only the insulating converter circuit supplies the charging current to the secondary battery. Thus, adverse effect of stray capacitance of a circuit of the vehicle can be eliminated.
摘要:
An optical measuring apparatus including: a measuring apparatus body, a lighting unit, a lighting controller. The lighting unit is demountably mounted on the measuring apparatus and has an LED as a light source. The lighting controller is configured to control the lighting unit according to a light intensity command value. The lighting unit includes a storage unit in which a calibration value is stored. The calibration value generates a light intensity corresponding to the light intensity command value. The lighting controller is configured to read calibration values corresponding to the light intensity command value out from the storage unit of the lighting unit upon receipt of the light intensity command value, and controls the LED on the basis of the calibration value.
摘要:
An optical measuring apparatus including: a measuring apparatus body, a lighting unit, a lighting controller. The lighting unit is demountably mounted on the measuring apparatus and has an LED as a light source. The lighting controller is configured to control the lighting unit according to a light intensity command value. The lighting unit includes a storage unit in which a calibration value is stored. The calibration value generates a light intensity corresponding to the light intensity command value. The lighting controller is configured to read calibration values corresponding to the light intensity command value out from the storage unit of the lighting unit upon receipt of the light intensity command value, and controls the LED on the basis of the calibration value.
摘要:
A process for recovery of gallium from aqueous solution containing gallium by adsorbing gallium to a chelate resin is disclosed. According to this process, the aqueous solution containing gallium is contacted batchwise with a chelate resin having a high selective adsorptivity for gallium or by flowing the aqueous solution through the resin at a rate of at least 20 parts by volume/hr of the aqueous solution per 1 part by volume of the resin.
摘要:
A power converter includes a booster circuit, an inverter circuit, a hysteresis control circuit, and a proportional-integral control circuit. The booster circuit boosts DC power of a DC power source. The inverter circuit converts the DC power outputted from the booster circuit into AC power and outputs the AC power to a system. The hysteresis control circuit controls the inverter circuit by hysteresis control so that the AC power can be outputted to the system when an AC voltage of the system is less than a DC voltage of the power source. The proportional-integral control circuit controls the booster circuit by proportional-integral control so that the AC power can be outputted to the system when the AC voltage of the system is larger than the DC voltage of the power source.