نتایج جستجو برای: doubling time
تعداد نتایج: 1900123 فیلتر نتایج به سال:
Development of bacteriophage T4 depends on the physiological state of its host cell. Based on previous studies performed under laboratory conditions with different media determining various growth rates of Escherichia coli, a mathematical model was developed which suggested that phage T4 development cannot proceed efficiently in bacteria growing with a doubling time longer than 160 min. Contrar...
Numerical solution of the time-dependent Dirac equation in coordinate space without fermion-doubling
The feasibility of three-terminal junction devices for frequency doubling and rectification reaching the terahertz range is studied both experimentally and numerically (by means of Monte Carlo simulations). Experiments at room temperature up to 94 GHz for detection and to 4 GHz for doubling and phase detection are shown. The influence of the width of the branches and the shape of the junction (...
The quenching of alternans is considered using a nonlinear cardiac conduction model. The model consists of a nonlinear discrete-time piecewise smooth system. Several authors have hypothesized that alternans arise in the model through a period doubling bifurcation. In this work, it is first shown that the alternans exhibited by the model actually arise through a period doubling border collision ...
BACKGROUND Relationships between tumor doubling time (DT) and other prognostic factors and the risk of death related to these factors are not yet fully understood. METHODS Tumor doubling time of primary lung carcinomas of 174 patients, detected in a limited number of local municipalities during a limited period, was calculated using the Schwartz formula. Survival rate of the 174 patients was ...
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