摘要:
The present invention provides a positron source essentially consisting of a carbon member having 18F bound onto the surface thereof, a method of preparing the same, and an automated system for supplying the same. In the present invention, the positron source is prepared by irradiating a solution containing both H218O and a small amount of natural fluorine ions with a beam of charged particles to generate 18F, and then passing an electric current through the solution using a carbon member 40 as an anode to cause to bind the generated 18F onto the surface of the carbon member.
摘要:
The present invention provides a positron source essentially consisting of a carbon member having 18F bound onto the surface thereof, a method of a preparing the same, and an automated system for supplying the same. In the present invention, the positron source is prepared by irradiating a solution 35 containing both H218O and a small amount of natural fluorine ions with a beam of charged particles to generate 18F, and then passing an electric current through the solution 35 using a carbon member 40 as an anode to cause to bind the generated 18F onto the surface of the carbon member 40.
摘要:
As a stainless steel for a metal part for clothing ornament capable of working into a complicated form part and having such nonmagnetic properties that the worked part can cope with the detection through needle detecting device is provided a high-Mn austenitic stainless steel having a chemical composition comprising C: 0.02-0.12 mass %, Si: 0.05-1.5 mass %, Mn: 10.0-22.0 mass %, S: not more than 0.03 mass %, Ni: 4.0-12.0 mass %, Cr: 14.0-25.0 mass % and N: 0.07-0.17 mass %, provided that these components are contained so that δ cal (mass %) represented by the following equation (1) is not more than 5.5 mass %: δ cal (mass %)=(Cr+0.48Si+1.21Mo+2.2(V+Ti)+0.15Nb)−(Ni+0.47Cu+0.11Mn−0.0101Mn2+26.4C+20.1N)−4.7 (1) and having a magnetic permeability of not more than 1.003 under a magnetic field of 200 kA/m.
摘要:
There is provided a three-dimensional object observing microscope which can easily observe a three-dimensional object in a three-dimensional manner. A three-dimensional object observing microscope comprising a table on which a three-dimensional object is placed, an imaging part which consists of an imaging lens and an imaging camera for imaging this three-dimensional object from an inclined upper position, and a casing which supports the imaging part rotatably in a horizontal direction and also integrally supports the table and the imaging part.
摘要:
A ferritic stainless steel having excellent oxidation resistance, toughness and hot workability contains 0.001-0.20% of at least one of Ca, Mg and Ba as an amount of [Ca]+[Mg]+1/5[Ba], and La: 0.06-0.5% and Ce: 0.002-0.050% in addition to C, Si, Mn, Ni, Cr, Al, Ti and N as a main component provided that these components satisfy relations of the following equations (1)-(3):[S].ltoreq.[Ca]+[Mg]+1/5[Ba] (1)[La]/[Ce].gtoreq.5 (2)Ti.gtoreq.48/12 [C]+48/14 [N] (3)
摘要:
This invention concerns a mechanical plating process comprising: shaving metal off from a pure metal or alloy block and plating an object to be plated with the shaved off metal by the use of at least a single metal brush, wherein the metal block and the metal brush are in frictional contact with each other, and the object to be plated and the metal brush are concurrently in frictional contact with each other.
摘要:
A circuit board comprises a rigid metal substrate, a conductive metal layer formed into a predetermined circuit pattern, and a resinous layer interposed between the metal substrate and the metal layer for electrically insulating and bonding the metal substrate and the metal layer, the conductive metal layer having an elongation at break of not less than 15%, and the resinous layer comprising a first resinous layer having a volume resistivity of not less than 10.sup.10 .OMEGA.. cm, and a second resinous layer having an elongation at break of not less than 100%. The circuit board has a desired dielectric strength between the metal substrate and the conductive metal layer and can be bent without resulting disconnection in the metal layer or the like.
摘要:
A packet transmission device includes a buffer stores packet data in any of queues, a queue manager outputs queue-status signals indicating whether or not transmittable packet data exists in the corresponding one of the queues, a bandwidth controller outputs token-status signals indicating whether or not an amount of the tokens accumulated at a certain period for the corresponding queue is larger than a token threshold provided for the corresponding queue, a queue selector preferentially selects any queue whose duration time of a transmittable state in which the corresponding queue status signal indicates that transmittable packet data exists in the corresponding queue and the corresponding token-status signal indicates that the amount of the accumulated tokens is larger than the token threshold provided for the corresponding queue is greater than a duration-time threshold provided for the corresponding queue, and a buffer reader controls reading of the packet data from the selected queue.
摘要:
An austenitic stainless steel for press forming has considerably excellent deep drawability and bulging property as compared with those of the conventional one, which comprises C: 0.01-0.10 wt %, Si: not more than 1.0 wt %, Mn: not more than 3.0 wt %, Ni: 6.0-10.0 wt %, Cr: 15.0-19.0 wt %, Cu: 1.0-4.0 wt %, Al: 0.2-2.5 wt %, N: not more than 0.05 wt %, and if necessary, Mo: 0.03-3.0 wt % and B: 0.0010-0.020 wt %, and is adjusted to satisfy anyone of Ni equivalent: 21.0-23.0, crystal grain size number (N) of not less than 8, cleanness of 0.020%, low Si content and (C+N) amount .gtoreq.0.04.
摘要翻译:用于冲压成形的奥氏体不锈钢与常规的奥氏体不锈钢相比具有显着优异的深冲性和凸出性,其包括C:0.01-0.10重量%,Si:不大于1.0重量%,Mn:不大于3.0重量% %,Ni:6.0〜10.0重量%,Cr:15.0〜19.0重量%,Cu:1.0〜4.0重量%,Al:0.2〜2.5重量%,N:0.05重量%以下,如有必要,Mo:0.03 -3.0重量%和B:0.0010-0.020重量%,并且调节为满足Ni当量:21.0-23.0,不小于8的晶粒度数(N),0.020%的清洁度,低Si含量和( C + N)量> / = 0.04。
摘要:
An electrostatic positioner with one or more first electrodes for producing forces to confine a charged specimen in the direction perpendicular to a center axis and second electrodes for producing forces to confine the charged specimen in the direction of the center axis.