In the present study, Pleurotus eryngii residue was added into conventional feed of Chai chicks and meat-type ducks at different ratios to measure its effects on the production performance of chicks and ducks. The res...In the present study, Pleurotus eryngii residue was added into conventional feed of Chai chicks and meat-type ducks at different ratios to measure its effects on the production performance of chicks and ducks. The results revealed that the growth performance of chicks and ducks was the best when 20% Pleurotus eryngii residue was added into the feed. Under such condition, the daily weight gain of 8 - 11 and 12 - 15-week-old Chai chicks was increased by 6.8% and 13.5%, and that of 8 - 11 and 12 - 15-week-old ducks was increased by 11.5% and 19.3%, respectively.展开更多
Elastic wave-based non-destructive testing(NDT) methods are effective for flaw detection in concrete structures and pavements.However,the test speed of elastic wave-based methods is severely limited by the physical co...Elastic wave-based non-destructive testing(NDT) methods are effective for flaw detection in concrete structures and pavements.However,the test speed of elastic wave-based methods is severely limited by the physical coupling between sensors and concrete surface.The air-coupled sensing method is proposed as a solution to develop rapid NDT techniques for concrete infrastructure.This paper reviews the development of air-coupled sensing technique for concrete structures in civil engineering applications.It presents four stages of the research:1) feasibility study through theoretical analysis;2) air-coupled surface wave velocity measurement; 3) air-coupled surface wave transmission measurement to determine crack depth;4) air-coupled impact -echo test to locate delaminations and voids in concrete.展开更多
基金Supported by National Key Technology Research and Development Program of China during the Twelfth Five-Year Plan Period(2012BAD14B07-02)
文摘In the present study, Pleurotus eryngii residue was added into conventional feed of Chai chicks and meat-type ducks at different ratios to measure its effects on the production performance of chicks and ducks. The results revealed that the growth performance of chicks and ducks was the best when 20% Pleurotus eryngii residue was added into the feed. Under such condition, the daily weight gain of 8 - 11 and 12 - 15-week-old Chai chicks was increased by 6.8% and 13.5%, and that of 8 - 11 and 12 - 15-week-old ducks was increased by 11.5% and 19.3%, respectively.
基金sponsored by the National Science Foundation under Grant No.CMS-0223819started up funds provided by the University of Texas at Austin
文摘Elastic wave-based non-destructive testing(NDT) methods are effective for flaw detection in concrete structures and pavements.However,the test speed of elastic wave-based methods is severely limited by the physical coupling between sensors and concrete surface.The air-coupled sensing method is proposed as a solution to develop rapid NDT techniques for concrete infrastructure.This paper reviews the development of air-coupled sensing technique for concrete structures in civil engineering applications.It presents four stages of the research:1) feasibility study through theoretical analysis;2) air-coupled surface wave velocity measurement; 3) air-coupled surface wave transmission measurement to determine crack depth;4) air-coupled impact -echo test to locate delaminations and voids in concrete.
