Nagoya, Japan

The Nagoya Institute of Technology , or less commonly Nitech, is a public highest-level educational institution of science and technology located in Nagoya, Japan. Nagoya Institute of Technology was founded on 1905 as Nagoya Higher Technical School, renamed Nagoya College of Technology in 1944 then merged under the new educational system with the Aichi Prefectural College of Technology to be refounded as Nagoya Institute of Technology in 1949. Finally in 2004 it was refounded as Nagoya University Corporation Nagoya Institute of Technology. Wikipedia.


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Patent
Ngk Insulators and Nagoya Institute of Technology | Date: 2016-10-28

A method of producing hexagonal plate-like zinc oxide particles having a sharp particle size distribution (i.e., a relatively uniform particle size) at a high weight yield and a high percent yield is provided. The method of producing hexagonal plate-like zinc oxide particles of the present invention comprises mixing by stirring an aqueous hexamethylenetetramine (HMT) solution, a solution of an anionic surfactant in a water-insoluble organic solvent, and optionally water to form a microemulsion containing an aqueous phase of an aqueous hexamethylenetetramine solution having a molar concentration of 0.05 M or more; dropwise adding an aqueous zinc salt solution to the microemulsion; and heating the microemulsion containing the aqueous zinc salt solution to a reaction temperature of 80 C. or more without using any autoclave to form hexagonal plate-like zinc oxide particles.


Patent
Nagoya Institute of Technology and Ngk Insulators | Date: 2016-11-09

There is provided a production method which enables stable formation of a p-type zinc oxide film and also is suitable for enlarging the area of the film. The method for producing a p-type zinc oxide film according to the present invention comprises the steps of: placing a target containing a zinc source and a substrate in a gas atmosphere containing a nitrogen source and an oxygen source and having a gas pressure of 0.1 Pa to 100 Pa, and exposing the target to arc discharge, thereby forming a precursor film containing zinc and oxygen on the substrate; and annealing the precursor film in an oxidizing atmosphere, thereby forming a p-type zinc oxide film.


Patent
Menicon Co. and Nagoya Institute of Technology | Date: 2017-04-12

A contact lens is provided as a hydrate of a copolymer of at least three components including (I) a both terminal-polymerizable silicone oligomer component that forms a hydrophobic region (A) in the copolymer, (II) a hydrophilic component that forms a hydrophilic region (C) in the copolymer, and (III) a hydrophobic monomer component having a molecular weight of at most 700 that forms the hydrophilic region (C) together with the component (II) and also contributes to form an intermediate region (B) which does not solvate with a hydrophilic solvent between said hydrophobic region (A) and hydrophilic region (C), wherein the intermediate region (B) shows a volume rate of 5 to 40% with respect to the region (A) in the copolymer, and the contact lens is transparent and free from bubbles therein. The contact lens is not only transparent but also is characterized by a combination of a high oxygen permeability, and a balance between softness and mechanical properties. The lens is produced through a process including steps of stirring a material liquid comprising at least three components of the above-mentioned components (I), (II) and (III) under a stirring power of 5 - 10000 W/m^(3) per unit volume of the material liquid for at least 10 minutes, and the injecting the stirred material liquid into a lens mold to polymerize the material liquid.


When recognizing leads by processing an image captured by a camera of a component provided with a single row or multiple rows of leads of the same size and shape at a regular pitch, waveform analysis of a change pattern of brightness (pixel value) along multiple lines set in a vertical, a horizontal, or a diagonal direction of the image is performed so as to identify a region in which the brightness changes cyclically as a lead recognition target region in which there is a possibility of a lead existing. Then, image recognition of leads is performed in the lead recognition target region. By this, even in cases in which there are metal portions or the like that are easily confusable with leads in a region outside the lead recognition target region, the mis-recognition of these metal portions or the like as leads is prevented, thus the recognition accuracy of leads is improved.


Patent
Menicon Co. and Nagoya Institute of Technology | Date: 2017-04-12

A contact lens is provided as a hydrate of a copolymer of at least three components including (I) a both terminal-polymerizable silicone oligomer exhibiting a viscosity of at least 200 mPa s at room temperature, (II) a hydrophilic monomer component having an ethylenically unsaturated group, and (III) a hydrophobic monomer component having a molecular weight of at most 700, wherein the contact lens exhibits an elastic-modulus ratio determined as a ratio of a rupture elastic modulus to an initial elastic modulus in a range of 0.8 - 1.2. The contact lens is not only transparent but also is characterized by a combination of a high oxygen permeability and a balance between softness and mechanical properties. The lens is produced through a process including steps of stirring a material liquid comprising at least three components of the above-mentioned components (I), (II) and (III) under a stirring power of 5 - 10000 W/m^(3) per unit volume of the material liquid for at least 10 minutes, and then injecting the stirred material liquid into a lens mold to polymerize the material liquid.


When recognizing leads by processing an image captured by a camera of a component provided with a single row or multiple rows of leads of the same size and shape at a regular pitch, waveform analysis of a change pattern of brightness (pixel value) along multiple lines set in a vertical, a horizontal, or a diagonal direction of the image is performed so as to identify a region in which the brightness changes cyclically as a lead recognition target region in which there is a possibility of a lead existing. Then, image recognition of leads is performed in the lead recognition target region.


Patent
Nagoya Institute of Technology | Date: 2017-05-31

A waveform selection metasurface uses different absorptances for a radio wave depending on a waveform of a radio wave. The waveform selection metasurface includes a plurality of conductive materials 11, and circuits 20 and 30 that link two adjacent conductive materials 11 out of the conductive materials 11. The circuits 20 and 30 include an RL circuit 30 that includes an inductor and a resistor. The inductor generates an electromotive force using a current flowing from one part of the conductive materials 11 to the other. The resistor converts the current to the heat.


Patent
Nagoya Institute of Technology | Date: 2015-07-15

A filter whose absorption rate for a radio wave changes depending on a waveform of a radio wave includes: a conductive member; a rectifier circuit that links two locations of the conductive member; and an RL circuit including an inductor and a resistor, the inductor generating an electromotive force using an electric current rectified by the rectifier circuit and the resistor converting the electric current to heat.


Ruderman M.,Nagoya Institute of Technology
IEEE Transactions on Industrial Electronics | Year: 2014

In motor drives, just as in other mechanical actuators, the friction compensation is extremely important as friction can have adverse impact on the overall control performance. In this paper, a feedforward friction observer (FFFO) is proposed as formulating an explicit analytical expression for the applied observation function. This ensures the cancelation of friction disturbances and time variances at steady state. The proposed observation scheme utilizes the two-state dynamic friction model with elastoplasticity (abbreviated as 2SEP), which is compact in parameterization and captures both the presliding and sliding phases of kinetic friction. The method to identify a motor drive plant with nonlinear friction in the frequency domain has been applied using only few frequency-response-function measurements. The feedback control design is performed with respect to the time delay detectable in the system, thus under additional constraints when determining the control gains. The optimal proportional-integral (PI) control designed this way is compared with the proportional control combined with the observer (P-FFFO). The simulation results show that P-FFFO control compensates faster for frictional disturbances at suddenly changing frictional conditions than PI control. In addition, an extensive experimental evaluation of velocity tracking control discloses P-FFFO as superior in terms of a faster steady-state convergence after various transient phases. © 2013 IEEE.


Xu X.-H.,Nagoya Institute of Technology | Matsuzaki K.,Nagoya Institute of Technology | Shibata N.,Nagoya Institute of Technology
Chemical Reviews | Year: 2015

The introduction of SOnCF3 groups into organic compounds drastically changes their biological and physicochemical properties. It has been demonstrated that besides achiral chromatography sublimation is the major concern in the accurate determination of the enantiomeric purity of fluorinated compounds. Some of the compounds containing SOnCF3 groups would be volatile. Hence it might be highly possible to indicate the phenomenon of self-disproportionation of enantiomers during the purification stage of them by achiral chromatography and/or distillation in the case of chiral compounds. As a class of important fluorinated compounds, C-SOnCF3 compounds find increasing utility in agrochemical and pharmaceutical applications.

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