摘要:
Provision of a porous ceramic material which rapidly induces bone tissue formation and has practical strength.A porous ceramic material 11 having substantially unidirectionally oriented pores 12, a porosity of 40-90%, and an average open area of one pore of 0.05×10−3-50×10−3 mm2 both in a first sectional surface perpendicular to the pore 12 orientation direction and a second sectional surface parallel to the first sectional surface and 5 mm distant from the first sectional surface in the pore 12 Orientation direction. Using the material 11, when a cylindrical test piece (diameter 3 mm×height 5 mm, the pore 12 array direction as a height direction) made of the material is dipped in polyethylene glycol up to 1 mm from one end thereof, polyethylene glycol permeates through the whole test piece preferably within 30 seconds.
摘要翻译:提供一种快速诱导骨组织形成并具有实用强度的多孔陶瓷材料。 在垂直于孔12取向的第一截面中,具有基本上单向取向的孔12,孔隙率为40-90%,孔的平均开放面积为0.05×10 -3〜50×10 -3 mm 2的多孔陶瓷材料11 方向和平行于第一截面的第二截面,并且在孔12的方位方向上离开第一截面的距离为5mm。 使用材料11,当将由该材料制成的圆柱形试验片(直径3mm×高度5mm,作为高度方向的孔12排列方向)从其一端浸入到聚乙二醇中至多1mm时,聚乙二醇渗透通过 整个试片优选在30秒内。
摘要:
Provision of a porous ceramic material which rapidly induces bone tissue formation and has practical strength.A porous ceramic material 11 having substantially unidirectionally oriented pores 12, a porosity of 40-90%, and an average open area of one pore of 0.05×10−3-50×10−3 mm2 both in a first sectional surface perpendicular to the pore 12 orientation direction and a second sectional surface parallel to the first sectional surface and 5 mm distant from the first sectional surface in the pore 12 orientation direction. Using the material 11, when a cylindrical test piece (diameter 3 mm×height 5 mm, the pore 12 array direction as a height direction) made of the material is dipped in polyethylene glycol up to 1 mm from one end thereof, polyethylene glycol permeates through the whole test piece preferably within 30 seconds.
摘要:
The invention provides a method of producing a porous ceramics material. The method comprises preparing a slurry by dispersing a ceramics raw material in a medium, filling the slurry in a container, inserting the container in a given direction into a cooling medium having a temperature not higher than the freezing point of the slurry such that the slurry freezes unidirectionally from one end side, drying the frozen slurry to give a green body, and firing the green body.
摘要:
The invention provides a method of producing a porous ceramics material. The method comprises preparing a slurry by dispersing a ceramics raw material in a medium, filling the slurry in a container, inserting the container in a given direction into a cooling medium having a temperature not higher than the freezing point of the slurry such that the slurry freezes unidirectionally from one end side, drying the frozen slurry to give a green body, and firing the green body.
摘要:
The production method of an implant material of the present invention includes step (A): a step of setting a porous ceramic material having substantially unidirectionally arrayed pores at any depth position inside a container, step (B): a step of filling the container with a cell-containing liquid containing at least bone marrow blood and/or peripheral blood, and step (C): a step of applying, on the container, a centrifugal force in the direction along the axis of the container.
摘要:
The LCOS element driving circuit is provided with a plurality of D/A converters for effecting D/A conversion on pixel data which is fed to each pixel of a LCOS element on a pixel group-by-pixel group basis and delay devices for delaying clock signals to provide timing for each D/A conversion operation. The clocks to be fed to the respective D/A converters are delayed via the delay devices to cause variation in delay time, so that output pixel signals from the D/A converters can be applied to the LCOS element in a synchronized state. This makes it possible to drive the LCOS element at high speed.
摘要:
The present invention is to produce an aluminum nitride powder which is turned into a sintered body at a temperature of not more than 1600° C., thereby obtaining a sintered aluminum nitride in which the density and thermal conductivity are high and which can be properly used as a substrate material.Using a vapor phase reaction apparatus shown in FIG. 1, ammonia gas was fed from a reactor 2 heated at from 300 to 500° C. and maintained at that temperature by a heating section 1 via a feeding tube 4 while being regulated by a flow regulator 3. At the same time, while being regulated by the flow regulator 5, nitrogen gas containing an organic aluminum compound is fed via a feeding tube 6 to obtain an aluminum nitride powder. The aluminum nitride powder is subjected to a heat treatment at from 1100 to 1500° C. in a reducing gas atmosphere and/or an inert gas atmosphere to obtain an aggregate aluminum nitride powder. The aggregate aluminum nitride powder is subjected to a mechanical treatment to obtain an aluminum nitride powder in which the specific surface area value is not less than 30 m2/g and a ratio of an average particle diameter to a particle diameter in terms of the specific surface area is not more than 10.
摘要:
The invention provides a sheet for optical-semiconductor element encapsulation, which has a multilayer structure including at least two resin layers. The at least two resin layers include: (A) an outermost resin layer (layer A) that is to be brought into contact with one or more optical semiconductor elements; and (B) a resin layer (layer B) disposed on the layer A and having a lower refractive index than that of the layer A. Also disclosed is a process for producing an optical semiconductor device using the sheet.
摘要:
The present invention provides a sheet for optical-semiconductor-element encapsulation, which comprises: an outermost resin layer A that is to be brought into contact with one or more optical semiconductor elements; a light-diffusing layer formed on the layer A and containing light-diffusing particles; and a resin layer B formed on the light-diffusing layer and having a lower refractive index than that of the layer A. Also disclosed is a process for producing an optical semiconductor device using the sheet.
摘要:
The invention provides a resin composition for optical use which comprises: (a) at least one member selected from the group consisting of: a polycarbodiimide represented by general formula (2): wherein R represents a diisocyanate residue, R1 represents a monoisocyanate residue, and n is an integer of 2 to 15; and a carbodiimide represented by general formula (3): R1—N═C═N—R1 (3) wherein R1 represents a monoisocyanate residue; and (b) a polycarbodiimide represented by general formula (1): wherein R represents a diisocyanate residue, R1 represents a monoisocyanate residue, and n is an integer of 20 to 200. Also disclosed are a resin sheet for obtained from the resin composition and an optical semiconductor device using the resin composition or the resin sheet.