Topcon Corporation

Mitsubishi Jukogyo Kabushiki Kaisha

Yoshimitsu Nakajima

Shugo Akiyama

Issei Hanya

Yuji Shirane

Kaoru Kumagai

Kazuhiro Morita

Hiroshi Makihara

Ryosuke Tomizawa

Naoto Kasori

Peng Zhao

Kensuke Niwa

Masashi Funahashi

Satoshi Suenaga

A spectral curve acquiring device comprising: a light receiving optical system () for irradiating an irradiating light, a light receiving optical system () for dispersing and receiving a reflected irradiating light reflected by an object to be measured (), a distance meter () for measuring a distance to the object to be measured, a storage module () for storing a plurality of reference spectral curves prepared based on a light receiving intensity for each wavelength at the time of measuring a white reference plate with different distances, and a control arithmetic module (), wherein the control arithmetic module obtains a light receiving intensity of the dispersed reflected irradiating light for each wavelength based on the reference spectral curve corresponding to a distance to be measured, corrects a measurement spectral curve prepared based on the light receiving intensity, and prepares a spectral reflectance curve.

Spectral curve acquiring device, concrete measuring instrument, spectral curve acquiring method and concrete measuring method

A method of measuring a state of concrete includes emitting an irradiation light to the concrete, the irradiation light including a wavelength range of near infrared light related to concrete measurement; and receiving a reflection light of the irradiation light P reflected on the concrete. At least five wavelengths &#x3bb;to &#x3bb;to &#x3bb;, different from each other by PLS regression analysis within a wavelength range of 900 nm to 2500 nm of absorption spectrum, are determined, and a degree of neutralization of the concrete caused by calcium hydroxide and a concentration of chloride ion is estimated.

Method of measuring state of concrete

A process for synthesizing material uses an exothermic reactor which comprises a coolant shell, two concentric pipes provided within the shell, a catalyst bed packed between inner and outer ones of the concentric pipes, an introduction tube connected to the inner pipe through which a starting fluid is introduced, and a communication path enabling the fluid after the passage of the inner pipe to be passed through the catalyst bed in a direction opposite to the direction of the passage through the inner pipe, the coolant shell having an inlet and an outlet for a coolant arranged in such a way that the flow of the coolant is parallel to the flow of the fluid within the catalyst bed. The coolant on the outside and the starting fluid on the inside of the catalyst bed cools the bed in such a way as to produce a temperature distribution along the bed that follows a maximum reaction rate line (M in FIG. 1) relating the concentration of the methanol to the temperature of the starting fluid.

Process for synthesizing methanol with an optimal temperature profile

Growing community of inventors

Tokyo, Japan

Yoshimitsu Nakajima