摘要:
A sealing bolt (2) for sealing a container lid (4) to a container body (6). The sealing bolt (2) comprises a seal head (8) adapted to be mounted to said container lid (4), a seal stud (10) adapted to be mounted to said container body (6) and a pin (14) connecting said seal head (8) to said seal stud (10). The sealing bolt (2) further comprises a conductor (30) arranged through a transverse passage (24) in said pin (14). The sealing bolt (2) further comprises a resilient member (36) arranged for biasing the pin (14) into a first position, in which the conductor (30) is compressed. The pin (14) is movable against the biasing by the resilient member (36) into a second position by application to the seal head (8) of a predetermined torque. The sealing bolt (2) further comprises a monitoring and detection unit (50), the monitoring and detection unit (50) including a transmitter (70) and a detector (76) coupled to respective ends (68, 74) of the conductor (30), and a processor (54), coupled to the transmitter (70) and the detector (76), the processor (54) being operable to determine that the pin (14) has been moved into the second position for the first time when it determines that a signal detected by the detector (76) has undergone a predetermined change. A method of installing a sealing bolt (2) is also disclosed.
摘要:
A non-contact identification and measurement method for identifying moving three-dimensional objects within an identification area, comprising the steps of detecting the presence of a moving object by scanning said identification area with a first eye-safe laser-based range detector system; discriminating between an object safe to be identified and an object not to be identified; for an object safe to be identified, activating a second laser-camera system and determining the speed and position of said object with said second laser-camera system; when said object safe to be identified reaches a position located in an active measurement area within said identification area, activating a third laser-camera system to acquire range data of said object.
摘要:
Each pulse of a pulse sequence received from a neutron detector is set as a trigger pulse triggering a predefined gate, the multiplicity of pulses within this gate is determined, the pulse having triggered the gate is assigned to a multiplicity category corresponding to this multiplicity of pulses and the trigger-to-predecessor distances from the trigger pulse to pulses preceding the trigger pulse within a certain range in the pulse sequence are determined. The range within which one looks for predecessor pulses of each trigger pulse exceeds the dead time of the neutron detector. For each multiplicity category, the number of trigger pulses assigned thereto is determined. For each multiplicity category, one builds, based upon the trigger-to-predecessor intervals determined, a distribution in time after an arbitrary preceding pulse of trigger pulses assigned to that specific multiplicity category. Based upon the multiplicity-specific distribution, one estimates, for each multiplicity category, the number of trigger pulses lost due to neutron detector dead time that would have been assigned to the multiplicity category. When the estimated number of lost trigger pulses is known, the number of trigger pulses assigned to each multiplicity category is accordingly corrected. As trigger pulses could have been assigned to a wrong multiplicity category due to missing pulses inside the triggered gates, the number of trigger pulses assigned to each multiplicity category may additionally be corrected for that using a similar technique.
摘要:
A method for activating particles for internal radiopharmaceutical use, said particles comprising precursor nuclides to be activated, is disclosed. The method comprises: directing a high-intensity laser beam (10) onto converting means (12) to produce an irradiating field of protons; and irradiating said particles comprising precursor nuclides (18) in said irradiating field of protons to activate said precursor nuclides, thereby obtaining radiolabeled particles.
摘要:
A method of force estimation for a minimally invasive medical system comprising a robot manipulator (10). The manipulator has an effector unit (12) equipped with a 6 degrees-of-freedom (DOF) force/torque sensor and is configured to hold a minimally invasive instrument (14) having a first end (16) mounted to the effector unit and a second end (20) located beyond an external fulcrum (23) that limits the instrument in motion, usually to 4 DOF. The method comprising the steps: - determining a position of the instrument relative to the fulcrum; - measuring by means of the 6-DOF force/torque sensor a force and a torque exerted onto the effector unit by the first end of the instrument; and - calculating by means of the principle of superposition an estimate of a force exerted onto the second end of the instrument based on the determined position, the measured force and the measured torque.
摘要:
A method for activating particles for internal radiopharmaceutical use, said particles comprising precursor nuclides to be activated, is disclosed. The method comprises: directing a high-intensity laser beam onto converting means to produce an irradiating field; and irradiating said particles comprising precursor nuclides in said irradiating field to activate said precursor nuclides, thereby obtaining radiolabeled particles.
摘要:
The invention relates to a method of loading a mother radionuclide into a radionuclide generator which comprises an cation exchange material, the said method comprising a preliminary step which consists in passing over the said material a solution containing the mother radionuclide and a complexing agent for the said radionuclide, the said complexing agent being at an effective concentration so as to prevent the mother radionuclide from concentrating solely in one part of the volume of the cation exchange material, the cation exchange material being chosen in the group consisting of the macroporous resins, the resins having a crosslinking rate of from 1 to 12%. This method is applied to radioisotope generators which emit α particles and are used in particular in the field of radioimmunotherapy.
摘要:
There is disclosed a method and apparatus for selectively monitoring tritium containing species in a gas. The apparatus comprises a hygroscopic scintillator element suitable for selective response to tritiated water vapour and other hydrophilic tritiated species in a gas, which scintillator comprises a solid scintillator material having a layer of hygroscopic material thereon. Measuring means are provided to measure any light emitted from the scintillator element, the amount of which emitted light provides a measure of the tritium containing species in the gas. The method comprises (a) providing a hygroscopic scintillator element as identified above for contact with a gas to be tested; (b) measuring the light emitted from said hygroscopic scintillator using measuring means, the amount of said light emitted from said scintillator element providing a measure of the activity of the tritiated water vapour or said hydrophilic tritiated species in the gas.