摘要:
This invention relates to a transdermal patch in the form of a layer complex, comprising a backing layer, a drug-reservoir layer comprising pharmacologically active ingredients and pharmaceutically acceptable adjuvants, and a release liner covering the drug-reservoir layer, characterized in that the drug-reservoir layer comprises isosorbide dinitrate and Bisoprolol at a ratio of 1:3 to 3:1 by weight, as the pharmacologically active ingredients. Animal tests show that said patch can reduce the elevation of T wave of cardiogram, the increase of the level of myocardial enzyme in blood serum, and the extension of the range of myocardial infarction caused by ligating the coronary artery in animals. Results show that said patch exhibits a considerable synergistic effect in the treatment of cardiovascular diseases and has good preventive and therapeutic effects on several adverse events on heart. In addition, the animal tests show that the patch according to the invention has a better pressure-reducing effect than the application of the patch containing only one of isosorbide dinitrate and Bisoprolol, and does not worsen the arrhythmia that is easily caused by the application of the patch containing only isosorbide dinitrate or Bisoprolol.
摘要:
The present invention relates to techniques for measuring integrated circuit interconnect process parameters. The techniques are applicable to any non-ideally shaped interconnects made from any type of conductive materials. Test structures are fabricated within an integrated circuit. Non-destructive electrical measurements are taken from the test structures to determine coupling capacitances associated with the test structures. A field solver uses the initial process parameters to determine design coupling capacitances. An optimizer then uses the measured coupling capacitances and the design coupling capacitances to determine the interconnect process parameters.
摘要:
Disclosed are mechanisms for efficiently and accurately calculating critical area. In general terms, a method for determining a critical area for a semiconductor design layout is disclosed. The critical area is utilizable to predict yield of a semiconductor device fabricated from such layout. A semiconductor design layout having a plurality of features is first provided. The features have a plurality of polygon shapes which include nonrectangular polygon shapes. Each feature shape has at least one attribute or artifact, such as a vertex or edge. A probability of fail function is calculated based on at least a distance between two feature shape attributes or artifacts. By way of example implementations, a distance between two neighboring feature edges (or vertices) or a distance between two feature edges (or vertices) of the same feature is first determined and then used to calculate the probability of fail function. In a specific aspect, the distances are first used to determine midlines between neighboring features or midlines within a same feature shape, and the midlines are then used to determine the probability of fail function. A critical area of the design layout is then determined based on the determined probability of fail function. In specific implementations, the defect type is a short type defect or an open type defect. In a preferred implementation, the features may have any suitable polygonal shape, as is typical in a design layout.
摘要:
Disclosed are methods and apparatus for determining whether to perform burn-in on a semiconductor product, such as a product wafer or product wafer lot. In general terms, test structures on the semiconductor product are inspected to extract yield information, such as defect densities. Since this yield information is related to the early or extrinsic instantaneous failure rate, one may then determine the instantaneous extrinsic failure rate for one or more failure mechanisms, such as electromigration, gate oxide breakdown, or hot carrier injection, based on this yield information. It is then determined whether to perform burn-in on the semiconductor product based on the determined instantaneous failure rate.