摘要:
The present invention is concerned with methods and devices for sample collection and simultaneous detection and/or quantitation my mass spectrometry of multiple trace elements and/or metals in fluid samples.
摘要:
An elongate tubular heat transfer element having a longitudinal tube axis that runs through the hollow interior of the heat transfer element. The heat transfer element includes a wall of monolithic construction having an outer surface and an inner surface. The wall is formed from a composite material including a matrix and rovings embedded in the matrix. The composite material is in contact with the hollow interior such that the inner surface determines a boundary of the hollow interior which extends longitudinally along the axis of the heat transfer element. The matrix is of a fluoropolymer having embedded therein rovings of boron-free chemically resistant glass fibres. The rovings include from about 20% to about 60% by volume based upon the volume of the composite material, rovings that extend longitudinally in a lengthwise direction parallel to the axis of the heat transfer element and rovings that extend spirally around the axis.
摘要:
A global timepiece includes a transparent disk, which is arranged overhead the face of the timepiece, which has a New Day Line extending radially from the center outwardly to an indice indicating midnight. The transparent disk is operationally connected to a rotatable shaft, or other drive mechanism, by which it is moving the transparent disk 360° in a clockwise direction within 24 hours. The disk further includes an International Date Line indicia and time zone indicia represented by cities, or areas, or marks, representing a time zone geographically located within each corresponding time zone. Two windows for the indication of two successive dates are cut into the face. These windows are aligned astride in the New Day Line. A wheel is arranged beneath these windows and moves counterclockwise and indicates, on its circumferential top area, the relevant dates. By this wheel, the timepiece shows two successive dates in the windows and which world locations are in which date.
摘要:
A global timepiece includes a 24 hour movement mechanism in a case, the mechanism has rotatable shaft(s) or other drive mechanism that extend through or around the face and is (are) connected to an hour hand, a minute hand, optionally a second hand, and a transparent disk. Optionally, a bezel rotatably connected to or inside the case has hour/minute indicia. The face can also define hour/minute indicia, as well as New Day Line indicia, having dual day and dual date windows on each side of the New Day Line. Optional features include a 24 hour alarm on the face. The transparent disk preferably is positioned above the face, rotates once every 24 hours, and contains International Date Line indicia; time zone indicia represented by cities or other indicia and Daylight Savings Time conversion indicia. Optionally, the case has a pair of connectors attached to opposing ends of the case to receive a pin to secure a wristband to the case.
摘要:
The invention relates to a capstock polymer composition comprising a blend of a melt extrudable acrylic polymer component; from 10% to 50% by weight of a halogen donor component; a halogen volatilisation component; and a char-inducing component which induces formation of a char upon application of flame to the composition.
摘要:
A shut-off valve for pressurized fluids in an air cooling/heating apparatus that includes at least one condenser and at least one fluid evaporator communicating with each other by a pipe. The valve includes two ducts each containing a restrictor coaxially formed with a capillary designed to cause rapid expansion of the fluid when it emerges from the capillary, thus allowing expansion of the fluid in either the heating or cooling mode. The valve further includes a duct for sampling the pressurized fluid before expansion during operation in either the heating or cooling mode.
摘要:
A gas turbine engine configured to operate using a liquid fuel and a gaseous fuel may include a combustor system fluidly coupled to a compressor system and a turbine system. The gas turbine engine may also include a control system configured to selectively direct the gaseous fuel and the liquid fuel to the combustor system based on a concentration of a constituent in the gaseous fuel.