摘要:
A crystalline material sufficiently pure for use in pharmaceuticals may be made by forming a saturated solution of the material, changing the temperature of the solution so it becomes supersaturated, and subjecting the solution to irradiation by high intensity ultrasound, the frequency of the ultrasound being scanned over a range of frequencies. For example the ultrasound may be varied between 19.5 and 20.5 kHz, and this variation may be sinusoidal. Preferably the ultrasound is provided only briefly, say for less than 5 s, before allowing the solution to cool gradually without further irradiation. The ultrasound may be applied using a vessel with an array of ultrasonic transducers attached to a wall, so each transducer radiates no more than 3 W/cm2 yet the power dissipation within the vessel is between 25 and 150 W/litre. This method can reduce the metastable zone width to less than 10 K. It is applicable in particular to aspartame.
摘要翻译:可以通过形成饱和的材料溶液,改变溶液的温度,使其变得过饱和,并通过高强度超声波对该溶液进行照射,使超声频率被扫描,可以制备足够纯的用于药物的结晶物质 在一个频率范围内。 例如,超声可以在19.5和20.5kHz之间变化,并且该变化可以是正弦的。 优选地,在允许溶液逐渐冷却而不进一步照射之前,仅提供超声波,例如少于5秒。 可以使用具有附接到壁的超声波换能器阵列的血管来应用超声波,因此每个换能器辐射不超过3W / cm 2,但是容器内的功率耗散在25和150之间 W /升。 该方法可将亚稳区宽度减小到10K以下。特别适用于阿斯巴甜。
摘要:
The apparatus and method transforms composite video signals according to NTSC, PAL, or SECAM standards into a symmetrical form in which the chroma component is phase locked to the instantaneous horizontal frequency to provide a fixed chroma phase to horizontal position alignment of video samples for efficient spatial manipulation thereof while preserving the storage efficiency of the single signal composite video format. The horizontally phase-locked symmetrical composite video signal may be transformed back to original asymmetrical chroma-reference based phase modulation for conventional display of the video signals.
摘要:
Method of applying a conformal coating to a highly structured substrate and devices made by the disclosed methods are disclosed. An example method includes the deposition of a substantially contiguous layer of a material upon a highly structured surface within a deposition process chamber. The highly structured surface may be associated with a substrate or another layer deposited on a substrate. The method includes depositing a material having an amorphous structure on the highly structured surface at a deposition pressure of equal to or less than about 3 mTorr. The method may also include removing a portion of the amorphous material deposited on selected surfaces and depositing additional amorphous material on the highly structured surface.
摘要:
A system, method, and computer-readable medium that facilitate display of a system configuration are provided. A graphical user interface may provide a display that indicates the position and status of system components and enables a user a convenient mechanism to determine via load group selection a universal power supply load group that is preferred to be connected to a particular chassis power supply, and further provides a mechanism to determine via load group selection which universal power supply load group is connected to a particular chassis power supply. In this manner, a user may confirm a system power supply configuration corresponds to a desired system power supply configuration.