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	Differential Influence of No-Tillage and Precipitation Pulses on Soil Heterotrophic and Autotrophic Respiration of Summer Maize in the North China Plain 期刊论文 OAI收割 AGRONOMY-BASEL, 2020, 卷号: 10, 期号: 12, 页码: 12 作者: Du, Kun; Li, Fadong; Leng, Peifang; Li, Zhao; Tian, Chao \| 收藏 \| 浏览/下载：33/0 \| 提交时间：2021/03/15 soil respiration components precipitation no-tillage automatic chamber maize North China Plain
	Differential Influence of No-Tillage and Precipitation Pulses on Soil Heterotrophic and Autotrophic Respiration of Summer Maize in the North China Plain 期刊论文 OAI收割 AGRONOMY-BASEL, 2020, 卷号: 10, 期号: 12, 页码: 12 作者: Du, Kun; Li, Fadong; Leng, Peifang; Li, Zhao; Tian, Chao \| 收藏 \| 浏览/下载：24/0 \| 提交时间：2021/03/15 soil respiration components precipitation no-tillage automatic chamber maize North China Plain
	The key technologies of a new semi-automatic chemiluminescence immunoassay analyzer based on the photomultiplier tube (EI CONFERENCE) 会议论文 OAI收割 2010 3rd International Conference on Advanced Computer Theory and Engineering, ICACTE 2010, August 20, 2010 - August 22, 2010, Chengdu, China 作者: Wang B.; Zhang X.; Zhang X.; Zhang X.; Wang B. 收藏 \| 浏览/下载：139/0 \| 提交时间：2013/03/25 In this paper we present a new semi-automatic chemiluminescence immunoassay analyzer which is based on photons counter consists by the photomultiplier tube.The photons count efficiency is very high which makes the test result be more sensitive and steady.A calibration circuit was presented int this paper which was used to check the veracity of the photons counting. Significantly this paper presents two unique compensation modules-measuring chamber and double spherical-convex lens optical system which are used to improve the efficiency of photons counting. 2010 IEEE.