Orthogonal array

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Statistical analysis on electrode wear in EDM of tool steel DIN 1.2714 used in forging dies

(BQ) Electrical discharge machining (EDM) is a widespread process which works very effectively in machining of difficult-to-cut materials and alloys in die and aerospace industries with high dimensional accuracies. However, this capability could be deteriorated due to electrode wear leading to decrease of process productivity. In this study, the effect of machining parameters of EDM process including on-time, current, voltage, the engaging time between workpiece and electrode, and pre-EDM roughing on electrode wear were experimentally investigated.

4p xuanphuongdhts 27-03-2017 51 2 Download

Báo cáo khoa học: Mosquito (Aedes aegypti ) aquaporin, present in tracheolar cells, transports water, not glycerol, and forms orthogonal arrays in Xenopus oocyte membranes

Previous results showed that mRNA encoding a putative aquaporin (AQP) (GenBankaccession number AF218314) is present in the tracheolar cells associated with female Aedes aegyptiMalpighian tubules. In this study, immuno-histochemistry detected the protein,AeaAQP, also in tra-cheolar cells, suggesting its involvement in water movement in the respiratory system. When expressed in Xenopus oocytes,AeaAQP increased the osmotic water permeability from15·10 )6 to 150 ·10 )6 mÆs )1 , whichwas inhibited by mercury ions. No permeability to glycerol or other solute was observed....

8p tumor12 20-04-2013 50 3 Download

Báo cáo toán học: "Orthogonal arrays with parameters OA(s3, s2+s+1, s, 2) and 3-dimensional projective geometries"

Tuyển tập các báo cáo nghiên cứu khoa học ngành toán học tạp chí Department of Mathematic dành cho các bạn yêu thích môn toán học đề tài: Orthogonal arrays with parameters OA(s3, s2+s+1, s, 2) and 3-dimensional projective geometries...

12p thulanh7 05-10-2011 55 5 Download