摘要:
The invention relates to a procedure of obtaining a lipid mixture rich in the content of .gamma.-linolenic acid or glycerides thereof from cultured fungus bodies of a filamentous Mortierella fungus. The invention proposes, on one hand, to fractionally extract the lipid mixture from the fungus bodies under mechanical disintegration in two steps first with an alcohol containing water to give a fraction rich in the polar lipids and then with a hydrocarbon solvent, e.g. hexane, to give a fraction lean in the polar lipids. The invention proposes, on the other hand, to enrich a lipid mixture relative to .gamma.-linolenic acid by fractionally crystallizing a part of a starting lipid mixture in a solution of a specified solvent so that the uncrystallized fraction in the mother liquor contains a lipid mixture in which the content of .gamma.-linolenic acid is remarkably increased in comparison with the starting lipid mixture.
摘要:
A very efficient microbiological method is proposed for the preparation of .gamma.-linolenic acid or a lipid rich in the content of .gamma.-linolenic acid, one of the essential fatty acids in the diet of mammals, e.g. human. The method comprises culturing a fungus of Mortierella genus including isabellina, vinacea, ramanniana, ramanniana var. angulispora and nana in a culture medium containing a carbohydrate, e.g. glucose, as the carbon source in an unusually high concentration of 60 to 400 g/liter to grow a fungal body containing a large amount of a lipid rich in the content of .gamma.-linolenic acid. A further improvement in the efficiency of culture and the content of the desired fatty acid in the fungal body is obtained by the addition of acetic acid or an alkali acetate to the culture medium.
摘要:
Lipids containing gamma-linolenic acid are extracted from cells of Mortierella genus fungi by first grinding the cells in the presence or absence of a hot alcoholic solvent, and then extracting the alcohol-treated ground cells with a solvent in a supercritical state, or a mixture of a solvent in a supercritical state with a lower aliphatic alcohol or a lower aliphatic hydrocarbon.
摘要:
Provided is a method of manufacturing a resin molded gear, which is to be integrally formed by injection molding, and includes: a tooth portion formed along an outer peripheral surface of a rim; a web extending along an inner peripheral surface of the rim; and a gate portion arranged at a boss, which joins to at least part of the web and is formed on a core portion located at a center axis, the method using a synthetic resin having a melting temperature of Tm° C., the method including: injecting and loading the synthetic resin molten at the melting temperature of Tm° C. into a cavity of a mold for forming the resin molded gear; and setting, when the gate portion is solidified, a thickness center temperature T1 of the web to (Tm−20)° C. or more to (Tm+20)° C. or less and a surface temperature T2 of the tooth portion to (T1−50)° C. or less.
摘要:
A liquid epoxy resin composition for semiconductor encapsulation comprising: (A) at least one epoxy resin, (B) at least one curing accelerator and (C) at least one acid anhydride terminated polyamic acid. The liquid epoxy resin composition provides a cured material that has an excellent adhesiveness to a semiconductor chip surface and has an excellent moisture resistance.
摘要:
Provided is a method of manufacturing a resin molded gear, which is to be integrally formed by injection molding, and includes: a tooth portion formed along an outer peripheral surface of a rim; a web extending along an inner peripheral surface of the rim; and a gate portion arranged at a boss, which joins to at least part of the web and is formed on a core portion located at a center axis, the method using a synthetic resin having a melting temperature of Tm° C., the method including: injecting and loading the synthetic resin molten at the melting temperature of Tm° C. into a cavity of a mold for forming the resin molded gear; and setting, when the gate portion is solidified, a thickness center temperature T1 of the web to (Tm−20)° C. or more to (Tm+20)° C. or less and a surface temperature T2 of the tooth portion to (T1−50)° C. or less.
摘要:
A mask blank manufacturing department manufactures a mask blank by forming a thin film to be a mask pattern on a mask blank transparent substrate. When providing the mask blank to a mask manufacturing department, the mask blank manufacturing department provides optical characteristic information (transmittance variation) of the mask blank transparent substrate and optical characteristic information (transmittance variation and/or phase difference variation) of the mask blank to the mask manufacturing department. The optical characteristic information of the mask blank transparent substrate is provided to the mask blank manufacturing department from a materials processing department that manufactures mask blank transparent substrates.
摘要:
An image reading system includes an information processing apparatus and a scanner connected to the information processing apparatus via a network. Upon receiving input of information that specifies the number of pages to be included in a file through an input unit and a web browser, the information processing apparatus transmits the information through a first communication unit to the scanner. The scanner reads image data through a reading unit, and divides the image data into files based on the information through a data management unit. The scanner transmits the files to the information processing apparatus through a second communication unit. The information processing apparatus displays images of the files on a monitor.
摘要:
In flip chip attach of electronic components, underfill is filled between the component and the substrate to alleviate, for example, thermal stress. In electronic component mounting using copper pillars conducted so far, filler contained in the underfill may cause separation in the process of heating and curing the resin. Disclosed is plating the surfaces of the copper pillars with solder. Mobilization of the filler charged in the underfill due to electric fields produced by local cells that are developed upon contact between dissimilar metals, is suppressed, and occurrence of crack at connection portions is obviated. Thus, connection reliability is increased.
摘要:
A technology for effectively preventing deformation of a light reflector plate fabricated by forming a synthetic resin reflector plate into a three-dimensional shape enabling a thinner light reflector plate, and additionally, reducing processing costs is provided. An adhesive tape for shape-retention is adhered onto a reflector plate which is fabricated by forming predetermined areas of a light-reflecting plastic film or sheet into a three-dimensional shape.