The widespread trend of pursuing higher efficiencies in radial turbochargers led to the prompting this work. A 3D-printed model static parts a variable geometry turbine, vaned nozzle, and volute, was developed. This up-scaled from actual reference turbine place sensors characterize flow around nozzle vanes, including tip gap. In study, computational scaled-up carried out verify results two ways...

In recent years, as the mobile equipment advances, higher output and higher energy density are required of the battery which drives the mobile equipment. As one of the solutions, development of portable fuel cells (DMFC) with methanol used for fuel has been progressed and the fuel cells will be soon put to practical use. The authors have developed a small air pump (0.2W output), which is mounte...

This paper deals with new concept of compressed air energy storage system using atmospheric air at ambient temperature as a zero pollution power source for running motorbikes. The proposed motorbike is equipped with an air turbine in place of an internal combustion engine, and transforms the energy of the compressed air into shaft work. The mathematical modeling and performance evaluation of su...

N.sitophila was grown under controlled conditions of solid state and submerged fermentation on Sago hampas. The optimum conditions of protein enrichment previously established for sugar beet pulp was used for this study. Under this condition the protein content of Sago hampas under solid state increased from 1.4 to 14.45% (W/W) whereas for Sago hampas and Sago starch, the protein content under ...

Invasion by free-floating species, such as Eichhornia crassipes, is one of the most critical threats to the biodiversity and sustainability of wetland ecosystems, where all plants experience spatial heterogeneity in substrate nutrients. However, few studies have focused on the effects of free-floating invaders on the capacity of submerged plants to utilize substrate nutrients. A 10-week greenho...

A novel method of cooling rolls in hot rolling is proposed. This uses a combination solid jet nozzles and specially shaped deflecting vanes. The vanes transform the incoming cylindrical water into flat fan. Thereby, coolant can be directed hardly accessible locations whilst maintaining optimal angle impingement. allow for effectively roll surface near gap, which otherwise not possible with clas...

In this study, we have investigated variations in the potential of floating and submerged leaves of longleaf pondweed (Potamogeton nodosus) to withstand silver ion (Ag+)-toxicity. Both floating and submerged leaves changed clear colorless AgNO3 solutions to colloidal brown in the presence of light. Transmission electron microscopy revealed the presence of distinct crystalline Ag-nanoparticles (...

In axial compressors, the unsteady flow caused by interaction between dynamic and static cascades will make moving vanes subject to periodic forces increase risk of high-cycle fatigue fractures. this study, an “S”-type bowed guide vane was designed a 1.5-stage compressor model established. For five with different bending coefficients, numerical simulation carried out under design conditions nea...

Submerged macrophyte communities are frequently subjected to disturbance of various frequency and strength. However, there is still little experimental evidence on how mechanical disturbance affects the performance and species composition of such plant communities. In a greenhouse experiment, we constructed wetland communities consisting of five co-occurring clonal submerged macrophyte species ...