独立小型风能热利用系统的选型

利用雷诺平均Navier-Stokes方程，采用标准k-ε双方程湍流模型，对具有代表性的FFA-W系列翼型的气动性能进行了模拟计算，结果表明该系列翼型适合于在风能热利用系统中应用。探讨了台阶翼型在系统中应用的可行性。分析了系统气动扭矩和负载匹配的关系，对各种热能转换设备的特性进行了比较，结果表明，选用油压泵作为负载，薄壁阻尼孔作为热转换设备，可以使系统始终在最佳工况点运行。结合分析，给出了系统的主要选型结果。     

Production of Hexaploid Wheats with Waxy Endosperm Character

In our wheat breeding program to introduce the low amylose character of Tanikei A6099 to elite lines, five waxy lines were unexpectedly obtained from 249 doubled haploid lines of the F₁ hybrid of Saikai 168 × Tanikei A6099. The amylose content of all the waxy lines was <1% and the blue value was <0.1. Starch granule-bound proteins were extracted and subjected to modified sodium dodecyl sulfate polyacrylamide gel electrophoresis. The waxy lines lacked the Wx protein. Starch paste viscosity measurements gave pasting profiles of waxy wheat starch that were quite different from those of nonwaxy wheats but similar to those of waxy maize. However, the peak viscosity of waxy wheats was much higher than that of the waxy maize.