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Influence of Illumination with Xenon or Sulfur Lamp on Growth of Tomato Seedlings
Chen, Qilin,Yu, Xinjian,Weng, Jun,Chen, Jinxing,Liu, Yuequn,Gao, Jinpeng,Xu, Chunhe Korean Society of Photoscience 2002 Journal of Photosciences Vol.9 No.2
Effects of illumination with xenon or sulfur lamp on growth of tomato seedlings were studied. Results showed no obvious differences in net photosynthetic rate and apparent quantum efficiency. In comparison with xenon lamp, illumination with sulfur lamp slightly reduced ChI a and ChI b content in leaves, relatively shortened epicotyl and hypocotyl length, but significantly increased anthocyanin content of leaves and promoted root growth of tomato seedling plants.
Chen, Qilin,Yu, Xinjian,Chen, Jinxing,Liu, Yuequn,Weng, Jun,Xu, Chunhe Korean Society of Photoscience 2002 Journal of Photosciences Vol.9 No.2
The emission of microwave sulfur lamp is mainly composed of visible light. This lamp producing little infrared radiation, has high light efficiency, long lifespan and less power consumption. In comparison with xenon lamp, growing under sulfur lamp apparently postponed jointing, increased the number of tillers, accelerated root growth of wheat. Relatively, xenon lamp evidently promoted heading and grain maturation. The development characteristics of wheat plant under sulfur lamp were more similar with that in natural condition.
Xin Yan,Jinxing Yu,Mingliang Ye,Kun He 대한기계학회 2023 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.37 No.8
A multi-rib design concept was proposed to reduce the heat transfer and enhance film cooling effect on squealer tip. Three different shapes of ribs (i.e. straight ribs, Vshape ribs, and L-shape ribs) were configured in the cavity of squealer tip of a turbine stage. The distributions of heat transfer coefficient (HTC) and film cooling effectiveness (FCE) on the multi-rib squealer tip were numerically predicted and compared against the conventional squealer tip. The results indicate that the configuration of multiple ribs is beneficial to weaken the development of cavity vortex system, and also traps more coolants in the squealer cavity. Compared to the conventional design, the implementation of L-shape ribs reduces the thermal loads on the cavity floor and entire tip by 82.4 % and 34.7 %, respectively, while the film cooling effects on the cavity floor and the entire tip are enhanced by 21.1 % and 72.2 %, respectively.