A new type of Si3N4 ceramics (ZAN) is developed in our laboratory. Densification of ZAN is promoted by non-toxic, non-oxide AZ-type additives. In this work high temperature (HT) properties and microstructures of ZAN are investigated
BIBO Stability Condition - A discrete-time LTI system is BIBO stable if the output sequence {y[n]} remains bounded for any bounded input sequence{x[n]}
Types of chemotaxins – C5a attracts neutrophils and monocytes – Made by bacteria Peptide clipped off N-terminus (beginning with Nformylmethionine) during peptide maturation after protein synthesis
Plant nitrogen 1.1 Uptake of N 1. N is required by plants in large amounts Most plant material contains 2-4%N and 40%C. 2. N is usually the limiting nutrient in unfertilized systems 3. Most n is taken up from the soil in the form of nht or no a small amount of NH3 can be absorbed through the leaves N2 can be used by legume plant via biological nitrogen fiXation
41.AS a _actor,he can perform, sing, dance and play several kinds of musical instruments. A.flexible灵活的,柔韧的n.flexibility B. versatile形容人多才多艺的,形容工具用途广泛的vers代表随时可以变换的n