Abstract: A radar apparatus includes: a transmission unit that transmits a chirp signal; a reception unit that receives a reflected signal that is the chirp signal reflected by a scatterer; and a pole calculation unit that calculates a beat signal based on the chirp signal and the reflected signal and calculates a pole of the beat signal by eigenvalue decomposition of an autocorrelation matrix of the beat signal. The radar apparatus further includes: a complex amplitude calculation unit that calculates a complex amplitude corresponding to the pole by using a least squares method between a basis waveform corresponding to the pole and the beat signal; a distance calculation unit that calculates a distance to the scatterer based on the beat signal; and an intensity calculation unit that calculates an intensity of the reflected signal based on the complex amplitude.

Abstract: A radar apparatus (1) of the present embodiment includes a transmitting unit (12) that transmits a frequency chirp signal whose frequency linearly changes with time, a receiving unit (13) that receives a reflected wave that is the frequency chirp signal reflected by an object, a mixer (14) that mixes the transmitted frequency chirp signal and the received reflected wave to obtain a beat signal, a frequency estimation unit (15) that estimates a frequency of the beat signal, and a distance estimation unit (16) that estimates a distance to the object based on the frequency of the beat signal. The frequency estimation unit (15) calculates an autoregressive coefficient of an autoregressive model from a sequence of discrete signal values of the beat signal and estimates the frequency of the beat signal using a base frequency that is based on a pole of the autoregressive model.

Abstract: Disclosed is a micro mixer which includes a mixing plate (14) with a first channel-forming section and a second channel-forming section. The first channel-forming section has a first channel formed for a first fluid to flow therethrough, while the second channel-forming section has a second channel formed for a second fluid to flow therethrough. Between the first channel-forming section and the second channel-forming section, there is provided a combined channel in which the first fluid and the second fluid merge with each other. The outlet of the first channel and the outlet of the second channel are opposed to each other with the combined channel disposed therebetween. The position of the outlet of the first channel facing the center axis of the combined channel is included in or the same as the position of the outlet of the second channel facing the center axis.

Abstract: The invention provides a process for continuously producing a urethane (meth)acrylate, containing causing a mixed liquid of a compound (A) having a hydroxyl group and a (meth) acryloyl group and a compound (B) having an isocyanate group to pass continuously and densely through a tubular microchannel formed in a heat-conducting reaction device, and reacting the hydroxyl group of the compound (A) with the isocyanate group of the compound (B).

Abstract: Disclosed is a micro mixer which includes a mixing plate (14) with a first channel-forming section and a second channel-forming section. The first channel-forming section has a first channel formed for a first fluid to flow therethrough, while the second channel-forming section has a second channel formed for a second fluid to flow therethrough. Between the first channel-forming section and the second channel-forming section, there is provided a combined channel in which the first fluid and the second fluid merge with each other. The outlet of the first channel and the outlet of the second channel are opposed to each other with the combined channel disposed therebetween. The position of the outlet of the first channel facing the center axis of the combined channel is included in or the same as the position of the outlet of the second channel facing the center axis.

Abstract: An object of the present invention is to provide a process for producing a urethane (meth)acrylate safely with good productivity, and for achieving the object, the invention provides a process for continuously producing a urethane (meth)acrylate, containing causing a mixed liquid of a compound (A) having a hydroxyl group and a (meth)acryloyl group and a compound (B) having an isocyanate group to pass continuously and densely through a tubular microchannel formed in a heat-conducting reaction device, and reacting the hydroxyl group of the compound (A) with the isocyanate group of the compound (B), in which the tubular microchannel in the reaction device has a space size making a fluid cross-sectional area, through which the mixed liquid passes densely, of from 0.1 to 4.0 mm2, and the process contains heating the heat-conducting reaction device to a temperature of from 100 to 250° C.

Abstract: An object of the present invention is to provide a process for producing a urethane (meth)acrylate safely with good productivity, and for achieving the object, the invention provides a process for continuously producing a urethane (meth)acrylate, containing causing a mixed liquid of a compound (A) having a hydroxyl group and a (meth)acryloyl group and a compound (B) having an isocyanate group to pass continuously and densely through a tubular microchannel formed in a heat-conducting reaction device, and reacting the hydroxyl group of the compound (A) with the isocyanate group of the compound (B), in which the tubular microchannel in the reaction device has a space size making a fluid cross-sectional area, through which the mixed liquid passes densely, of from 0.1 to 4.0 mm2, and the process contains heating the heat-conducting reaction device to a temperature of from 100 to 250° C.

Abstract: An object of the present invention is to provide a process for producing an epoxy (meth)acrylate safely with good productivity, and the invention provides a process for continuously producing an epoxy (meth)acrylate, containing causing a mixed liquid of a compound (A) having a carboxyl group and a (meth)acryloyl group and a compound (B) having an epoxy group to pass continuously and densely through a tubular microchannel formed in a heat-conducting reaction device, and reacting the carboxyl group of the compound (A) with the epoxy group of the compound (B), in which the tubular microchannel in the reaction device has a space size making a fluid cross-sectional area, through which the mixed liquid passes densely, of from 0.1 to 4.0 mm2, and the process contains heating the heat-conducting reaction device to a temperature of from 150 to 260° C., reacting the mixed liquid to provide a Reynolds number of a reaction liquid passing through the tubular microchannel in a range of from 0.