排序方式: 共有25条查询结果,搜索用时 15 毫秒
21.
Abstract— The effect of ultraviolet radiation on glycine, diglycine, triglycine and polyglycine in the solid state has been investigated using ESR. The irradiated diglycine and tnglycine displayed signals commonly encountered when more energetic radiations are employed, but polyglycine displayed an additional signal not previously described and the signal from glycine was found to differ from those produced by other radiations. 相似文献
22.
BENJAMIN LEVY CHARLES COLLINS SUZANNE LENHART MARGUERITE MADDEN JOSEPH CORN RENÉ A. SALINAS WILLIAM STIVER 《Natural Resource Modeling》2016,29(1):71-97
Feral Hogs (Sus scrofa) are an invasive species that have occupied the Great Smoky Mountains National Park since the early 1900s. Recent studies on vegetation, mast, and harvest history were important for our work. Using these data, a model with discrete time and space was formulated to represent the feral hog dynamics in the Park. Management strategies and key characteristics of the population were investigated. The model uses observed mast variation to help govern population dynamics and results indicate that Park control efforts have limited the growth of the population. 相似文献
23.
24.
25.