摘要:
In a computed tomography apparatus, and a method for operating same, for obtaining cardiac images, a spiral scan of a measurement volume containing a patient's heart is conducted, the production of the scanning data during the spiral scanning being synchronized with an ECG signal from the patient, in order to produce a graphic representation of the examination volume, and thus an image of the patient's heart. The ECG signal is employed to control the generation of the data during the spiral scanning at phase of the cardiac cycle wherein minimum movement of the heart takes place. The chronological correlation between the recording of the scanning data and the ECG signal is fixed, so that within each number of successive time intervals, a dataset is obtained completely within that time interval. The datasets from the successive time intervals are then combined to produce an image of the heart. Since the component images are all obtained in a low-motion phase of the heart, the resulting overall image is particularly sharp.
摘要:
An imaging system for the fluorescence-optical visualization of a two-dimensional or three-dimensional object is provided. The imaging system comprising an illumination unit, which is designed and provided for emitting optical radiation in a predetermined wavelength range in order to illuminate the object and excite a fluorescent substance contained in the object, and a capturing unit, which is designed and provided for capturing an optical signal from the region of the object and for splitting the optical signal into a fluorescence signal having a first wavelength range and a signal of visible light having a second wavelength range. The optical capturing unit has an optoelectronic converter having a plurality of partial regions and serving for converting the fluorescence signal into a first electronic data signal and the signal of visible light into a second electronic data signal.
摘要:
Improving cell therapy and tissue regeneration in a patient suffering from a cardiovascular or a neurological disease by treating a tissue of the patient with shock waves and/or applying to the patient a therapeutically effective amount of stem cells and/or progenitor cells. Such treatment increases expression of chemoattractants, pro-angiogenic factors, and pro-survival factors. The chemoattractants can be, for example, vascular endothelial growth factor (VEGF) or stromal cell derived factor 1 (SDF-1). For example, the treated tissue can be located in the patient's heart or in a skeletal muscle of the patient, and the shock waves can be extracorporeal shock waves (ESW) or intracorporeal shock waves. The cardiovascular disease can have an ischemic or non-ischemic etiology. For example, the cardiovascular disease can be a myocardial infarction, ischemic cardiomyopathy, or a dilatative cardiomyopathy. For example, the neurological disease can be a peripheral neuropathy or neuropathic pain.
摘要:
An epoxy adhesive composition is provided that has superior wash-off resistance after pre-gelling, and may be used, e.g., in manufacturing processes, e.g., in the automobile industry. The compositions comprise an epoxy resin, a gelling agent, and a phenolic agent, and may optionally comprise other components. Methods of making and using the compositions are also provided.
摘要:
Epoxy adhesive compositions contain a heat-activatable catalyst. The heat-activatable catalyst includes a tertiary amine catalyst and a novolac resin that has a weight average molecular weight of at least 3000. One-component epoxy adhesive formulations that contain the heat-activatable catalyst have unexpectedly good storage stability.
摘要:
An imaging system for the fluorescence-optical visualization of a two-dimensional or three-dimensional object is provided. The imaging system comprising an illumination unit, which is designed and provided for emitting optical radiation in a predetermined wavelength range in order to illuminate the object and excite a fluorescent substance contained in the object, and a capturing unit, which is designed and provided for capturing an optical signal from the region of the object and for splitting the optical signal into a fluorescence signal having a first wavelength range and a signal of visible light having a second wavelength range. The optical capturing unit has an optoelectronic converter having a plurality of partial regions and serving for converting the fluorescence signal into a first electronic data signal and the signal of visible light into a second electronic data signal.
摘要:
A frame for reinforcing a hull of a craft, particularly an aircraft, contains at least one frame element that is shaped in accordance with the curvature of the hull and has recesses at a side facing the hull for the passage of longitudinal beams of the craft. Each frame element is integrally formed from a fiber-reinforced plastic composite material and the recesses are configured as integral cut-outs of each frame element.
摘要:
Structural adhesives containing a non-rubber-modified epoxy resin, an elastomeric toughener and a curing agent further include an epoxy-functional fatty acid oligomer and a polyol. The presence of the epoxy-functional fatty acid oligomer and a semi-crystalline or crystalline polyester polyol in combination increase the storage stability of the structural adhesive.
摘要:
An industrial roll includes: a substantially cylindrical shell having an outer surface; a polymeric cover circumferentially overlying the shell outer surface; and a sensing system. The sensing system includes: a plurality of sensors embedded in the cover, each sensor configured to sense a data parameter; and a plurality of wireless transceivers, each transceiver connected to a respective sensor and embedded in the cover adjacent thereto. Each wireless transceiver is configured to transmit data signals from the respective sensor. Related methods and systems are also discussed.
摘要:
Structural adhesives are prepared from an elastomeric toughener that contains urethane and/or urea groups, and have some terminal isocyanate groups that are capped with a phenol and other terminal isocyanate groups that are capped with a hydroxy-functional acrylate or a hydroxy-functional methacrylate. In certain embodiments, the presence of both types of capping on the toughener leads to higher impact peel strengths and a greater level of cohesive failure, than when the toughener is capped with a phenol an hydroxy-functional acrylate or hydroxy-functional methacrylate alone.