The optimal harvesting problem for a semi-linear age-dependent time-varying population system is discussed.
讨论了年龄相关的半线性时变种群系统的最优捕获控制问题。
2
However, plastids only have a semi-autonomous transcription and translation machinery. The transcription of endogenous plastid genes is largely dependent on nuclear-encoded transcription factors.
然而，质体仅具有半自主性转录和翻译机制，其内源基因的转录要依赖于核基因编码的转录因子。
3
A specific semi-nested RT-PCR based on the RNA-dependent RNA polymerase gene in AF469603 of Chinese bee (Apis sinensis) sacbrood virus was established to detect Chinese bee sacbrood virus.