Yonezawa, Japan
Yonezawa, Japan

Yamagata University is a national university located in the Japanese cities of Yamagata, Yonezawa, and Tsuruoka in Yamagata Prefecture.The university was established in 1949, but its origin can be traced back to the Yamagata Normal School , a public teacher-training institution, founded in 1878 in Yamagata City. The university also has other roots: the Yonezawa Higher Technical School founded in 1910 in Yonezawa City, the Yamagata Higher School founded in 1920 in Yamagata City, the Yamagata Youth Normal School founded in 1922 in Yamagata City, and the Yamagata Prefectural Agricultural College founded in 1947 in Tsuruoka City.Yamagata University is the second-largest university in the Tohoku Region. The university has six faculties and about 10,000 students in four campuses. It also has an additional subcampus in which University K-9 schools are administered. Wikipedia.


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The present invention provides a liquid crystal horizontal orientation agent, a horizontal orientation type liquid crystal composition, a horizontal orientation type LCD device and a method of fabricating the horizontal orientation type LCD device. In one embodiment, the liquid crystal molecule is horizontally oriented by the liquid crystal horizontal orientation agent without the rubbed orientation layer.


Patent
Toyoda Gosei and Yamagata University | Date: 2016-07-29

A cell culture device comprises a cell culture membrane and a substrate fixed to the cell culture membrane. The cell culture membrane is made from a thermosetting resin and has a plurality of pores that are open to at least one surface including a surface on a side that is in contact with the substrate. The substrate is made from a thermoplastic resin. In a contact region between the cell culture membrane and the substrate, part of the substrate is extended to form bulges in the pores of the cell culture membrane that are open in the contact region. This configuration suppresses reduction of the strength of the cell culture membrane and reduction of the flatness of the cell culture membrane (membrane accuracy) in the cell culture device in which the cell culture membrane and the substrate are fixed to each other.


Patent
Yamagata University and NOF Corporation | Date: 2017-02-01

The present invention provides a polymer compound that can be expected to inhibit activation of a coagulation system, a complement system or a platelet system when brought into contact with in vivo tissue and/or blood since the compound is capable of containing intermediate water, and a composition and a device using the same. This problem is solved by a polymer compound containing a repeating unit represented by general formula (A), and used in contact with in vivo tissue and/or blood, in which in a process in which the polymer compound caused to contain water in a prescribed water content is cooled to -100C and thereafter heated at a temperature rise rate of 5.0C/min, a temperature region where exothermicity occurs is present in the range of -80C or more and -25C or less, and a temperature region where endothermicity occurs is present in the range of -25C or more and lower than 0C:


Patent
SBI Pharmaceuticals Co. and Yamagata University | Date: 2017-05-17

It is intended to provide an in vitro culture medium that allows the in vitro culture of fertilized eggs to progress normally to the blastocyst stage without arresting the development thereof. The normal development rate of a fertilized egg is improved by using 5-aminolevulinic acids represented by the following formula (I) (wherein R^(1) represents a hydrogen atom or an acyl group, and R^(2) represents a hydrogen atom, a linear or branched alkyl group, a cycloalkyl group, an aryl group, or an aralkyl group) or salts thereof as an agent for improving a normal development rate of a fertilized egg.


Patent
Yamagata University and NOF Corporation | Date: 2015-03-23

The present invention provides a polymer compound that can be expected to inhibit activation of a coagulation system, a complement system or a platelet system when brought into contact with in vivo tissue and/or blood since the compound is capable of containing intermediate water, and a composition and a device using the same. This problem is solved by a polymer compound containing a repeating unit represented by general formula (A), and used in contact with in vivo tissue and/or blood, in which in a process in which the polymer compound caused to contain water in a prescribed water content is cooled to 100 C. and thereafter heated at a temperature rise rate of 5.0 C./min, a temperature region where exothermicity occurs is present in the range of 80 C. or more and 25 C. or less, and a temperature region where endothermicity occurs is present in the range of 25 C. or more and lower than 0 C.:


To Provide is a polymer having high antithrombogenicity compared to a conventional polymer having a glycerol group and suitable as a medical device material. It is the polymer having a structural unit derived from a glycerol group-containing monomer, and a structural unit derived from an unsaturated monomer having a structure in which an organic group having a structure site having 4 or more carbon atoms continuously bound is bound to an ethylenically unsaturated group; and satisfying a glass-transition temperature of 10 C. or less and/or a glass-transition temperature of 25 C. or less at a saturated water content.


Patent
SBI Pharmaceuticals Co. and Yamagata University | Date: 2015-07-10

It is intended to provide an in vitro culture medium that allows the in vitro culture of fertilized eggs to progress normally to the blastocyst stage without arresting the development thereof. The normal development rate of a fertilized egg is improved by using 5-aminolevulinic acids represented by the following formula (I) (wherein R^(1 )represents a hydrogen atom or an acyl group, and R^(2 )represents a hydrogen atom, a linear or branched alkyl group, a cycloalkyl group, an aryl group, or an aralkyl group) or salts thereof as an agent for improving a normal development rate of a fertilized egg.


Patent
Ube Industries and Yamagata University | Date: 2017-06-21

An object of the present invention is to provide a benzobis(thiadiazole) derivative, which has an excellent mobility of electron (field-effect mobility) and also has an excellent stability in the atmosphere. The present invention relates to a benzobis(thiadiazole) derivative or the like, which has cyclic imide structures annelated to an aromatic ring in the molecule, represented by the following general formula (1) or (2) wherein R, A and Z represent predetermined groups.


Patent
Namiki Seimitsu Houseki Kabushikikaisha and Yamagata University | Date: 2015-01-28

A cell membrane observation and analysis device includes at least: a microscope; and a substrate which has a plurality of holes, in which a cell membrane is placed on each hole of the substrate to be placed on the substrate, the cell membrane is immersed into a buffer solution while the cell membrane is suctioned through the hole, and the buffer solution is sealed, thereby observing and analyzing the cell membrane. Using the above-mentioned device, a substrate is prepared; a cell membrane is dispersed in a buffer solution, thereby preparing a suspension; the suspension is dripped onto a face of the substrate; the cell membrane is sucked through each hole to be placed on each hole; the cell membrane is immersed into a second buffer solution while the cell membrane is sucked; the second buffer solution is sealed; and the cell membrane is observed and analyzed with a microscope.


Patent
Yamagata University | Date: 2015-05-08

Provided is a polymer material having effective antibacterial properties and having bio adaptability in which cytotoxicity, especially low hemolysis, when used in contact with in vivo tissue and blood is suppressed so as to be low. The polymer is characterized by comprising a main chain and a side chain portion which is linked to the main chain via a linker and which contains at least a structure specified by the following (A) and (B). (A) A structure containing a cationic group and (B) a structure in which expression of bio adaptability is expected.

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