摘要:
A continuously variable conical pulley transmission having pairs of conical pulleys which are rotationally fixedly arranged on drive input and drive output shafts and of which in each case one is fixed to the shaft and one is axially movable, and between which a traction mechanism belt for power transmission circulates. In order that it is not necessary to provide otherwise unutilized regions of the conical pulley surfaces to allow for corresponding wear, it is proposed that a stop for limiting the transmission ratio, which stop acts substantially in the radial direction on the traction mechanism belt, be provided in at least one conical pulley pair. It is intended in particular that the peripheral surface of the drive input shaft serves as a stop. It is also proposed that a chain as a traction mechanism belt be correspondingly matched to a device of said type by virtue of the contour of the links of said chain being matched to the contour of the drive input shaft.
摘要:
Normal and abnormal diurnal cortisol secretion patterns are identified from human saliva samples by an in vitro method. First and second saliva samples are taken from one human individual at first and second predetermined times during the same day. A first cortisol concentration is determined in the first saliva sample, and a second cortisol concentration is determined in the second saliva sample. An abnormal secretion pattern is then compared to a normal secretion pattern with the help of a fuzzy logic algorithm. A function of the hypothalamic-pituitary-adrenal (HPA) axis is then determined for the human individual. Optionally, a testosterone level is determined from one of the samples and is used in combination with the cortisol concentrations to provide a redefined determination.
摘要:
A semiconductor wafer has a front side, a rear side and an edge which runs along the circumference of the semiconductor wafer and which connects the front side and the rear side of the edge having a defined edge profile, the edge profile being substantially constant over the entire circumference of the semiconductor wafer. A method for producing such a wafer allows for production of a multiplicity of semiconductor wafers, the edge profile being substantially constant from semiconductor wafer to semiconductor wafer.
摘要:
The invention concerns an ultrasonic welding device, which is more fully integrated by adjacent components of coupling surface. In order to permit a adequately fixed connection between the components, while, at the same time simplifying the mounting, it is suggested that at least some of the integrated components (30, 34) are structured in their coupling surfaces (40, 42), which lie on top of each another, for the achievement of a form closure.
摘要:
A continuously variable conical pulley transmission having pairs of conical pulleys which are rotationally fixedly arranged on drive input and drive output shafts and of which in each case one is fixed to the shaft and one is axially movable, and between which a traction mechanism belt for power transmission circulates. In order that it is not necessary to provide otherwise unutilized regions of the conical pulley surfaces to allow for corresponding wear, it is proposed that a stop for limiting the transmission ratio, which stop acts substantially in the radial direction on the traction mechanism belt, be provided in at least one conical pulley pair. It is intended in particular that the peripheral surface of the drive input shaft serves as a stop. It is also proposed that a chain as a traction mechanism belt be correspondingly matched to a device of said type by virtue of the contour of the links of said chain being matched to the contour of the drive input shaft.
摘要:
A pump for liquids at positive pressure, includes a pump chamber (18) accommodating an impeller (24), wherein the impeller (24) is axially biased against a non-rotating support element (48) which determines the axial position of the impeller (24). The shaft (42) may be coupled to a drive shaft (64) through a magnet coupling (56, 62).
摘要:
Sensor interrogation systems based on optical phase changes are configured to quantify analytes. Sensor chips and wells can include light scattering regions, light absorbing regions, or tilted regions to reduce or eliminate unwanted portions of an interrogation optical beam. In some examples, a spatial phase modulation is used to compensate static birefringence or to provide a selected sensor bias point. Phase changes can be detected based on state of polarization using interferometry. Optical resonator structures can be used to enhance phase changes to simplify detection of optical phase changes.
摘要:
Combinatorially generated peptides are provided that have binding affinity for clay. The peptides may be used to deliver benefit agents to various clay surfaces.
摘要:
A sterilization container has a valve arrangement that remains open in a venting phase and is then closed before a pressure difference is compensated for at a predetermined differential pressure. The valve remains closed until the container is opened for the purpose of withdrawing and using the sterilized instruments contained therein. The valve is actuated through a snap disk arrangement, the snap disks of which vault gradually into opposite directions at predetermined temperatures, thereby effecting a defined valve control. The snap disk arrangement is provided in a thermally isolated housing, which prevents a premature back-switching of certain snap disks that could be caused by a cooling-off as a result of the evaporation of condensate.