摘要:
Methods for covalently modifying surfaces of various substrates are disclosed, along with various substrates having surfaces modified by such methods. Candidate surfaces include various polymeric, siliceous, metallic, allotropic forms of carbon, and semiconductor surfaces. The surfaces are exposed to a reagent, having molecules each comprising a nitrenogenic group and a functionalizing group, in the presence of energized charged particles such as electrons and ions, photons, or heat, which transform the nitrenogenic reagent to a nitrene intermediate. The nitrene covalently reacts with any of various chemical groups present on the substrate surface, thereby effecting nitrene addition of the functionalizing groups to the substrate surface. The functionalizing groups can then participate in downstream chemistry whereby any of a large variety of functional groups, including biological molecules, can be covalently bonded to the surface, thereby dramatically altering the chemical behavior of the surface. Such functionalizations of the surface can be done in a single reactive step or in multiple reactive steps.
摘要:
A heat treating oven incorporating at least one oven section (8, 8a, 8b), built in a modular system, and where the inner sides (13, 17) of the oven walls at least partly are provided with reflecting material and support a number of infra-red radiating tubes (15) connectable to a current source, and which oven section is equipped with supply air terminal devices (10, 14, 18). In order to make the oven more flexible this oven section has at least one heating unit (11) connected to the supply air terminal devices (10, 14, 18) and adapted to be optionally switched in for heating the supply air to an optional temperature, in order to impart upon the oven section a combination of heating by optional proportions of radiation heat caused by the infra-red tubes and convection heat caused by the heated supply air.
摘要:
The invention refers to a hose coupling for compressed air, which has a safety locking device. The safety locking consists in that when the male member (1) is disconnected, the male member (1) is not entirely disengaged but is caught by the locking balls (4) in the female member (2) until the overpressure in the hose and the tool has disappeared. Then the male member (1) is released. In this way the unpleasant bang that otherwise arises, and the effect that the hose together with the male member (1) moves backwards with enormous power, are prevented in a controlled way.
摘要:
Device at stanchions (10) to vehicle load platforms with cover and cover support, which stanchions in their upper end are extended by means of a removable cover support (31) by an open hinge joint (58) the pivotability of which is limited to a position in which the stanchion (10) and the cover support (31) which are situated in the axial extension of each other, and in which position the stanchion housing (11) of the stanchion is attachable to the cover support (31) by means of a locking mechanism (32). The stanchion housing consists of a hollow profile (12) closed in cross section, the inside of which is divided into at least two longitudinal channels (13, 14). One channel (13) of the stanchion housing (11) at the upper part of the stanchion (10) is provided with a longitudinal opening (53) in the part of the stanchion which forms its rear wall, which opening has a considerable extension from the upper end edge of the stanchion housing to receive the root portion (54) of the cover support (31), the bottom end of the root portion together with the interior (53) of the opening being designed to form an open hinge joint. In the other channel/channels (14) of the stanchion housing (11) is provided at least one in said locking mechanism (32) containing an in the channel (14) displaceable lock (50), which is provided to cooperate with a locking sleeve (52) in the cover support (31).
摘要:
System for use of a microprocessor for drawing of winners in a lottery with an in advance given dividend, at which each lottery ticket includes at least one counter of bingo type with a number in rows and columns provided numbers as well as for the lottery ticket unique identification. The identification of each lottery ticket and number row of a counter are stored in a first register which is readable by a microprocessor, that a number of number sequences are created and stored in a second register which is readable by a microprocessor, in such a way that each of the number sequences is unique and gives a number of prize-winning rows of numbers among the counters, which number corresponds to the given dividend. One of the number sequences in the second register is selected by a random draw. The microprocessor compares this chosen number sequence with the number rows in the first register and shows the identifications that indicate counters with a prize-winning row of numbers.
摘要:
Device for flexible hoses of the kind, which internally and/or externally are reinforced by means of a coil spring (11, 19) or the like for preventing the hose (10) from collapsing at flexure. The spring (11, 19) is attached to an internal socket-shaped nipple (12) and/or an external socket (17) only at one end. The socket is arranged to be connected to one end portion of the hose through forced fitting. The spring (11, 19) is provided freely movable in and/or on the hose. The spring (11) is screwed firmly on the nipple and compressed before insertion in the hose (10), and it is inserted in the hose in compressed condition, after which the spring is decompressed.
摘要:
Ce système évite de faire des noeuds dans les sutures. La pince (20) peut coulisser en une position ouverte le long des sutures (12) qui s'étendent à partir d'une région de sutures. Lorsque la pince (20) se trouve sur la région des sutures (12), ces dernières sont tendues et la pince est forcée en une position fermée, ce qui bloque la position de la pince (20) par rapport aux sutures (12).