This paper is concerned with a nonautonomous time-delayed model for the regulation of the hematopoiesis with an oscillating circulation loss rate. We prove a fixed point theorem in cones to establish some sufficient conditions ensuring the existence of positive almost periodic solutions of the model with almost periodic coefficients. Moreover, some examples are given to illustrate our theoretical results.

中文翻译：

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具有振荡循环损失率的造血模型的几乎周期解的新结果

本文涉及一个非自治的时滞模型，用于调节具有振荡循环损失率的造血功能。我们证明了锥中的一个不动点定理，以建立一些充分的条件，以确保存在具有近似周期系数的模型的正近似周期解。此外，给出了一些例子来说明我们的理论结果。