摘要:
A magnetic resonance image synthesizing system comprising a magnetic field generating section for generating a static magnetic field, a gradient magnetic field and a radio-frequency magnetic field and for irradiating those magnetic fields to an object to be examined, a receiver for detecting a magnetic resonance signal supplied from the object to be examined, a processing unit for calculating and constructing an MR image and distribution of blood velocity or relaxation time on the basis of the detected nuclear magnetic resonance signal, a sequence control section for controlling the gradient magnetic field and the radio-frequency magnetic field as well as the receiver, a display unit for displaying an MR image, and a manipulation section for specifying a necessary position on the screen of the display unit, the processing unit further making the display unit display an MR image calculated and synthesized on the basis of scanning parameters and a blood velocity or relaxation time defined in accordance with a position specified in the manipulation section.
摘要:
The present invention provides dendritic cells (DCs) having reduced inflammatory activity, a method for producing DCs capable of inducing regulatory T cells and regulatory T cells, and substances useful for such a method, wherein the DCs and regulatory T cells are useful for prevention and treatment of immune diseases. The present invention relates to a cereal plant-derived material fermented with a koji microorganism, which is obtained by fermentation thereof with a koji microorganism, or a processed product thereof. Preferably, the fermented product or a processed product thereof comprises 14-dehydroergosterol. According to the present invention, regulatory DCs and regulatory T cells can be induced and the proliferation of inflammatory T cells can be suppressed using plant-derived materials.
摘要:
The present invention provides dendritic cells (DCs) having reduced inflammatory activity, a method for producing DCs capable of inducing regulatory T cells and regulatory T cells, and substances useful for such a method, wherein the DCs and regulatory T cells are useful for prevention and treatment of immune diseases. The present invention relates to a cereal plant-derived material fermented with a koji microorganism, which is obtained by fermentation thereof with a koji microorganism, or a processed product thereof. Preferably, the fermented product or a processed product thereof comprises 14-dehydroergosterol. According to the present invention, regulatory DCs and regulatory T cells can be induced and the proliferation of inflammatory T cells can be suppressed using plant-derived materials.
摘要:
A grease composition comprising a base oil, a thickener selected from a metallic soap and a urea compound, and an inorganic filler having an average particle size of not greater than 2 .mu.m, and a rolling bearing having sealed therein a grease composition comprising a base oil, a urea thickener, and an inorganic filler having an average particle size of not greater than 2 .mu.m.
摘要:
A lithium complex grease for rolling bearings which has high dropping points and is capable of maintaining for a long time an excellent stability of a thickener micell under a high temperature, high adhesion, heat resistance, water resistance, rust resistance, load resistance, low noises and other high-level properties and a method of producing such lithium complex grease. The lithium complex greases are characterized in that base greases containing a base oil, a fatty acid having 12 to 24 carbon atoms, a dicarboxylic acid having 4 to 12 carbon atoms and/or a dicarboxylic acid ester and a lithium hydroxide are thickened with a phosphate ester and/or a phosphite ester. A method of producing the lithium complex greases is characterized in that the base greases having the above composition are added by the phosphate ester and/or the phosphite ester, and thickened under a reaction at a temperature of more than 210.degree. C. (410.degree. F.).
摘要:
The present invention provides a grease composition which is excellent in peel resistance, not to mention lubricity, as compared with the prior art products. A novel grease composition for rolling bearing is provided, comprising a base oil, an extender, an inorganic compound-based filler having an average particle diameter of not more than 2 &mgr;m and zinc dithiocarbamate.
摘要:
A rolling bearing has a grease filled therein. The grease contains a perfluoropolyether oil having a straight-chain structure having a dynamic viscosity of from 40 to 160 mm2/s, preferably from 40 to 100 mm2/s, at 40° C. as a base oil and a particulate fluororesin as a base oil, and a particulate polytetrafluoroethylene as a thickening agent.
摘要:
A grease composition comprising a base oil containing not less than 10% by weight of an ester oil based on the total base oil and having a kinematic viscosity of 50 to 200 mm.sup.2 /sec at 40.degree. C. and 15 to 35% by weight, based on the total grease composition, of a diurea compound represented by formula (I): ##STR1## wherein R.sub.2 represents an aromatic hydrocarbon group having 6 to 15 carbon atoms; and R.sub.1 and R.sub.3, which may be the same or different, each represent an aromatic hydrocarbon group having 6 to 12 carbon atoms or an aliphatic hydrocarbon group having 8 to 20 carbon atoms, the proportion of the aromatic hydrocarbon groups in the total of R.sub.1 and R.sub.3 being 50 to 100 mol %. When applied to outer race rotating bearings, the grease composition is excellent in flaking resistance, leak resistance, and low noise properties and prevents premature seizing under high temperature and high speed conditions.
摘要:
A grease composition for a high speed anti-friction bearing contains, in a synthetic lubricant base oil, (A) 2 to 30 wt. % of a thickening agent consisting of an urea comopund, (B) 0.2 to 30 wt. % of sorbitan monooleate, (C) 0.2 to 3.0 wt.% of barium sulfonate, and (D) 0.2 to 3.0 wt. % of barium lanolate, as indispensable components, each weight percentage being based on the total weight of the composition.
摘要:
This invention is to provide a conductive grease which is less to decrease conductivity as a time passes. The conductive grease comprises a base oil, a thickener, a conductive solid powder, and at least one kind of a wear inhibitor, an extreme pressure agent and an oiliness agent, wherein an amount of the conductive solid powder added is 0.1 to 10 wt %, and an amount of the at least one kind of a wear inhibitor, an extreme pressure agent and an oiliness agent added is 0.1 to 10 wt %. Further, the conductive grease comprises the base oil and at least one of conductive additives, and the conductive additives are fibrous carbon, metallic particle, metallic compound particle and carbon nano-tube. The conductive grease to be packed into the rolling bearing comprises conductive fine particles such as carbon black and has an oil separation degree of 2% or lower. A ball bearing to be favorably used at high temperature comprises an inner race and an outer race, and a plurality of balls freely rotating between both races, and the conductive grease packed into a space defined between both races and holding the plural balls therein, and the conductive grease comprises the base oil, a thickener comprising fluorine compound or silicone compound and 0.2 to 10 wt % of the carbon black.