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Journal of Zhejiang University SCIENCE B
ISSN 1673-1581(Print), 1862-1783(Online), Monthly
2023 Vol.24 No.12 P.1180-1184
Proapoptotic protein Bim regulates the suppressive function of Treg cells
Abstract: Regulatory T (Treg) cells are a special immunosuppressive subset of cluster of differentiation 4-positive (CD4+)-T lymphocytes and play a pivotal role in the establishment of immune homeostasis in vivo (Zhang et al., 2021). The transcription factor forkhead box protein P3 (Foxp3) is the master marker of Treg cells, which is highly expressed in Treg cells and is also essential for their suppressive function (Hori et al., 2003). In addition to Foxp3, other regulators of Treg cells have been discovered (Wu et al., 2017, 2022; Wu and Sun, 2023a, 2023b); however, a deeper understanding of the regulation of these cells is required.
Key words: Regulatory T cells; Bim; Tumor immune therapy; Senescence of immune system
机构:1浙江大学,能源工程学院,中国杭州,310027;2华东勘测设计研究院,中国杭州,300450
目的:风阻功率引起的温升是土工离心机大型化过程中的一个主要限制因素。本文旨在探究土工离心机内不同区域风阻功率的分布规律,并得到一种可以更为准确地计算风阻功率的方法,以期为大型土工离心机的温控设计提供理论支撑。
创新点:1.通过误差传递分析和排除设备的固有功率,获得了高可靠性的风阻功率实验数据;2.提出了新的风阻功率计算公式,明确了速度系数α和阻力系数Ci的影响因素。
方法:1.通过建造离心式超重力及跨学科实验设施(CHIEF)的缩比模型实验装置,准确测量设备的风阻功率,并用实验数据标定对应的数值模型;2.通过对仿真结果的分析,量化土工离心机内不同区域风阻功率的占比(表3和4,图7),从而确定影响风阻功率的关键区域;3.通过对关键区域关键参数(α、Ci)变化规律的探究(图9),确定关键参数的影响因素;4.根据关键参数的变化规律,推导出风阻功率的计算公式;5.通过对固有功率的分析,提出总功率的函数形式,并通过对已有土工离心机总功率的拟合,验证函数形式的正确性。
结论:1.采用间接测量方法获得风阻功率时,需要评估其传递误差;2.吊篮和转臂上风阻功率的占比分别为72%和28%,表明吊篮是关键部件;3.速度系数和风阻系数与设备的几何尺寸有关,几乎与角速度无关;4.消除固有功率的影响后,风阻功率与角速度的三次方成正比。
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DOI:
10.1631/jzus.B2300288
CLC number:
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On-line Access:
2024-08-27
Received:
2023-10-17
Revision Accepted:
2024-05-08
Crosschecked:
2023-12-12