摘要:
Lepidocrocite (.gamma.-FeOOH) with an large specific surface area and a uniform particle size is provided by a method comprising preparing a suspension of ferrous hydroxide at a pH of 6.5 to 7.5 by adding a ferrous salt solution with an alkali solution in an amount of 0.4 to 0.7 times the theoretical amount for converting all the ferrous salt to ferrous hydroxide, blowing an oxygen-containing gas into the suspension to form a seed crystal of .gamma.-FeOOH, completing the generation reaction of .gamma.-FeOOH by blowing an oxygen-containing gas into the suspension while adding an alkali solution to keep the pH of the suspension within a range of 3 to 5, in which an Si concentration of the suspensions for seed reaction and for generation reaction of .gamma.-FeOOH is controlled to be within 5 to 30 ppm.
摘要:
A radiation therapy device controller identifies a pixel on a straight line connecting a ray source and a sensor array, and calculates a luminance update amount candidate value for each identified pixel based on a ratio of a change amount for the pixel on the straight line indicating the living body to a sum of change amounts from a luminance value of a pixel corresponding to a correlated computed tomography image correlated with a computed tomography image of an update target of a luminance value of the identified pixel. Also, the control device calculates a luminance update amount of each identified pixel using the luminance update amount candidate value of each identified pixel calculated for a plurality of rotation angles, and updates the luminance value of each corresponding pixel of the computed tomography image of the update target using the luminance update amount of each identified pixel.
摘要:
A radiation therapy apparatus control method includes: calculating a plurality of degrees of similarity corresponding to a plurality of matching target areas based on a radiographic image; calculating a specific image position where a specific image area corresponding to a maximum value of the degrees of similarity out of the matching target areas is positioned in the radiographic image; and calculating a drive amount with which a therapeutic radiation ray irradiation device is driven, based on the specific image position. The operation of calculating the one degree of similarity corresponding to the one matching target region out of the degrees of similarity includes: referring to a template table in which the plurality of matching target areas are associated with a plurality of sets of templates to calculate a set of templates corresponding to the one matching target area out of the plurality of sets of templates; and detecting, from the set of templates, a similar template most similar to a matching target image displayed in the one matching target area of the radiographic image.
摘要:
The height and width of a sheet-like filler material before it is placed in a cell of a honeycomb material is set greater than those of the honeycomb material, and after the placement, peripheral edges of the honeycomb material are fringed with filler materials to prevent a filler material from falling out of an end section cell. A liquid adhesive agent is applied to the top of cell walls facing one surface of the honeycomb material, and a surface material is pressed to that surface of the honeycomb material to which the adhesive agent is applied. Then, before the adhesive agent hardens, water-absorbing foam materials are placed in cell spaces by pressing them into the cell spaces from the other surface of the honeycomb material until they are in contact with the adhesive agent. The foam material is quickly adhered to the honeycomb material.
摘要:
The invention relates to a toner for developing electrostatic latent images for use in copying machines and including a thermoplastic resin and a black coloring material as main components. The black coloring material comprises a substantially non-magnetic inorganic black pigment of 5-25 cc/100 g oil absorption and 0.5-10 .mu.m average particle diameter, to obtain high quality copy images having fine textures.
摘要:
A grinding tool has diamond superabrasive grains as the abrasive and a bond to retain the abrasive grains. The bond is made of organic polymer or metal and contains as a filler both a solid film-forming lubricant and finely divided diamond superabrasive grains having a grain size smaller than one-third that of the diamond superabrasive grains as the abrasive. The grinding tool of this invention is suitable for grinding a hard cutting material such as cutting tools made of titanium nitride cermet and exhibits outstanding cutting performance and durability.
摘要:
A radiotherapy device controller includes: a visual line calculator configured to calculate a visual line based on a position on a transmissive image imaged using a radiation penetrating a subject, a specific part of the subject being shown at the position; a position calculator configured to calculate a position of the specific part based on a position of a trajectory of the specific part and a position of the visual line; and an emitter configured to control a radiation emitter that emits a therapeutic radiation, so that the therapeutic radiation penetrates at the position of the specific part.
摘要:
This radiation therapy device controller selects, for a plurality of body motion phases, computed tomography image data obtained which shows a diseased portion, and generates, for each rotation angles of a ray source and a sensor array, a reconstructed image. The control device generates a radiation projection image which shows the diseased portion when the radiation is radiated if the rotation angle is a predetermined rotation angle, compares the reconstructed image of each of the plurality of body motion phases with the radiation projection image, and determines a body motion phase indicated by a reconstructed image in which a difference is small, to be a current respiratory phase. As a result, a position of the diseased portion calculated for the computed tomography image data in the computed tomography image data group of the respiratory phase in advance is identified to be a current position of the diseased portion.
摘要:
A radiotherapy apparatus controller includes: a portal image taking unit; a gantry position collector; a marker position calculator; and a marker position table generator. The portal image taking unit takes a first transmission image, in which a marker member positioned at a predetermined position is shown, by using therapeutic radiation and an imager. The gantry position collector collects a first gantry position at which a gantry is positioned when the first transmission image is taken from a sensor measuring a position at which the gantry is positioned, the gantry supporting the imager and a therapeutic radiation radiating device which radiates the therapeutic radiation. The marker position calculator calculates a first marker position at which the marker member is shown in the first transmission image. The marker position table generator updates a marker position table, which correlates a plurality of gantry positions with a plurality of marker positions, so that the first gantry position corresponds to the first marker position.
摘要:
An attachment structure comprises a top ceiling, a cover member to cover a window glass from the inside of a vehicle compartment, an airbag which is stored along an upper edge portion of the window glass in its non-operation state and inflates downward through a gap which is formed between the window glass and the side end portion of the top ceiling which is pressed down by the airbag receiving a gas pressure from an inflator; and support members to support the cover member longitudinally at a position which is on an outside of the inflating airbag. Accordingly, the proper inflation of the airbag can be provided despite of the cover member at the window.