摘要:
A substrate (33) is clamped into a fixture (32) and material is deposited thereon to form a complex article (40). The article (40) produced is packed, using ceramic inserts (42) and a coating (41). The packing (42) ensures that the article (40) maintains its true shape and allows for expansion during the subsequent heat treatment process. The packed article (40), mounted on the fixture (32), is then placed in a box (44), encased in a granular material (43) and heated. It is heated to a temperature sufficient to relieve stresses and is maintained at this temperature for a time period such that the stresses in the article (40) are relieved.
摘要:
A substrate (33) is clamped into a fixture (32) and material is deposited thereon to form a complex article (40). The article (40) produced is packed, using ceramic inserts (42) and a coating (41). The packing (42) ensures that the article (40) maintains its true shape and allows for expansion during the subsequent heat treatment process. The packed article (40), mounted on the fixture (32), is then placed in a box (44), encased in a granular material (43) and heated. It is heated to a temperature sufficient to relieve stresses and is maintained at this temperature for a time period such that the stresses in the article (40) are relieved.
摘要:
A welding torch (10) for welding on a component has an electrode (12) within a nozzle (14) through which a flow of gas passes. A shield (20) defines an enclosure (22) around the nozzle (14). Means are provided for supplying weld filler material (18) into the vicinity of the electrode (12) through the shield (20). One end of the shield (20) is attached to the welding torch (10). The other end of the shield (20) is open and extends towards the component (16). An inflatable seal (28) is mounted on the end of the shield (20) to seal between the shield (20) and the component (16).
摘要:
Biological agents such as secretory cells are encapsulated in a hydrophilic gel made of agarose or collagen-agarose and gelatin sponge-agarose combinations. In a preferred embodiment, semi-solid beads are formed from a suspension containing collagen, agarose and secretory cells such as pancreatic islets, the collagen is polymerized to form solid, agarose-collagen beads and the solid beads are coated with agarose. Coating is preferably by rolling the solid beads in about 5-10% agarose, contacting the rolled beads with mineral oil and washing oil from the beads. Beads containing secretory cells can be transplanted into a mammal to treat a condition caused by impaired secretory cell function.
摘要:
The invention relates to the stem cells, embryonic stem cells in particular. It has been found that, when these stem cells are entrapped such that their proliferation is inhibited, they produce material which inhibits the proliferation of other, non-entrapped cells, including stem cells and neoplastic and/or hyperproliferative, but otherwise normal cells. It has also been found that entrapped cancer cells will produce material which inhibits the proliferation of stem cells. Further, it has been found that the entrapment of the stem cells inhibits their differentiation and thus the entrapment process can serve as a long-term storage device for maintaining the undifferentiated state of at least a portion of the entrapped cells.
摘要:
Compositions of matter are described which contain restricted cancer cells. When so restricted, the cells produce an unexpectedly high amount of material which suppresses cancer cell proliferation. The phenomenon crosses cancer type and species lines. Processes for making these compositions, and their use, are also described.
摘要:
A hand-held portable modular spectrometer unit. The unit includes a detachable head containing a light source and optical components for detecting spectral information from light reflected from or transmitted through a target and a processor for converting the detected spectral information into digital information. The unit also includes a plug-in rechargeable power supply and a control module for controlling the components in the measurement head. The controller includes a computer processor for analyzing the digital information produced by the measurement head and a display monitor for displaying spectral information produced by the control unit. In preferred embodiments the plug-in rechargeable power supply is a 12-volt off-the-shelf power-tool rechargeable battery unit. In preferred embodiments several measuring heads are available. These include a gas cell measuring head, a surface reflectance measuring head that includes and integrating sphere, a specular reflectance measuring head, a grazing angle measuring head, an attenuated total reflectance measuring head, a diffuse reflection measuring head, a non-volatile residues measuring head, a liquid transmission cell measuring head and a fluorescence measuring head. Each of these measurement heads includes a spectrometer. Several types of spectrometers are available including those based on filters, prisms, gratings and interferometers. The unit can operate in a wide range of wavelengths including the infrared, visible and ultraviolet spectral ranges.
摘要:
The invention relates to the stem cells, embryonic stem cells in particular. It has been found that, when these stem cells are entrapped such that their proliferation is inhibited, they produce material which inhibits the proliferation of other, non-entrapped cells, including stem cells and neoplastic and/or hyperproliferative, but otherwise normal cells. It has also been found that entrapped cancer cells will produce material which inhibits the proliferation of stem cells. Further, it has been found that the entrapment of the stem cells inhibits their differentiation and thus the entrapment process can serve as a long-term storage device for maintaining the undifferentiated state of at least a portion of the entrapped cells.
摘要:
The present invention relates to a laminated vertical structure. One embodiment includes a structure having a substantially vertical wall surface. A solid surface material sheet is provided that has a stone content of at least 90%, an area of at least four square feet, and an approximate thickness of between ¼ inch and ⅗ inch. In one embodiment, the thickness is approximately ⅜ inch. An adhesive material contacts the sheet and the wall surface to fix them together. In another embodiment, a method of constructing a laminated vertical structure includes providing a structure with a substantially vertical wall surface and a solid surface material sheet with a stone content of at least 90%, an area of at least four square feet, and an approximate thickness of between ¼ inch and ⅗ inch. An adhesive material is then applied onto the wall surface in a substantially uniform distribution. The sheet is then pressed onto the applied adhesive material for an amount of time sufficient to fix the sheet to the wall surface.
摘要:
A material for suppressing proliferation of cancer cells is produced by entrapping cancer cells in a selectively-permeable structure such as a bead, and culturing the entrapped cells in a culture medium. Entrapment restricts growth of the cancel cells during culturing and causes the cells to produce in the culture medium a material having a molecular weight of at least about 30 kd as measured by filtration that suppresses proliferation of cancer cells. The material is separated from the culture medium by filtering the medium through a filter that separates material having a molecular weight of at least about 30 kd from material having a molecular weight of less than 30 kd. The structure that entraps the cells may contain 10,000 to 500,000 cells. The material or the structure containing the entrapped cells that produce the material can be administered to a subject to suppress cancer cell proliferation.