考虑游隙及挠度的十字轴万向节轴承寿命修正

采用MATLAB编程和ANSYS数值分析的方法,对某解放牌载货车用十字轴万向节轴承进行了考虑游隙及挠度的载荷分布计算,并将载荷分布计算结果作为应力分析的输入条件,对受载最大滚针进行了接触应力分析,根据所得应力极值建立了十字轴万向节轴承寿命修正模型。分析计算结果表明,相比于传统寿命计算方法,修正后的轴承寿命计算方法考虑到了游隙与挠度对十字轴万向节轴承寿命的影响,对轴承寿命的预测精度显著提高,试验验证结果与分析结论具有良好的一致性

新疆特产“阿魏菇”及南方优质蘑菇北移栽培

该项目掌握菌丝生长的温度（适宜温度为25℃），使用双层套袋栽培可以提高菌种成活率；控制小气候的湿度和温度，营造有利于香菇生长所需要的温、湿环境，是提高香菇品质和产量的技术关键，采用大棚套小拱棚可以实现。从培育优良品种入手，对收集的野生菌种进行分离、筛选和驯化栽培试验，筛选培育出阿魏菇短柄品系阿4、阿69菌株。培养基筛选配方是此项目创新点；人为掌握出菇点是提高商品成品率的技术关键，采用在子实体处开口可以解决，这是此项目的创新点；改变出菇模式，采用长袋直立间隔法可以大大提高阿魏菇的产量和品质，这是此项目的创新点

JUNO Sensitivity on Proton Decay p→νˉK+p\to \bar\nu K^+ Searches

The Jiangmen Underground Neutrino Observatory (JUNO) is a large liquid scintillator detector designed to explore many topics in fundamental physics. In this paper, the potential on searching for proton decay in $p\to \bar\nu K^+$ mode with JUNO is investigated.The kaon and its decay particles feature a clear three-fold coincidence signature that results in a high efficiency for identification. Moreover, the excellent energy resolution of JUNO permits to suppress the sizable background caused by other delayed signals. Based on these advantages, the detection efficiency for the proton decay via $p\to \bar\nu K^+$ is 36.9% with a background level of 0.2 events after 10 years of data taking. The estimated sensitivity based on 200 kton-years exposure is $9.6 \times 10^{33}$ years, competitive with the current best limits on the proton lifetime in this channel

JUNO sensitivity on proton decay p → ν K + searches*

The Jiangmen Underground Neutrino Observatory (JUNO) is a large liquid scintillator detector designed to explore many topics in fundamental physics. In this study, the potential of searching for proton decay in the $p\to \bar{\nu} K^+$ mode with JUNO is investigated. The kaon and its decay particles feature a clear three-fold coincidence signature that results in a high efficiency for identification. Moreover, the excellent energy resolution of JUNO permits suppression of the sizable background caused by other delayed signals. Based on these advantages, the detection efficiency for the proton decay via $p\to \bar{\nu} K^+$ is 36.9% ± 4.9% with a background level of $0.2\pm 0.05({\rm syst})\pm$$0.2({\rm stat})$ events after 10 years of data collection. The estimated sensitivity based on 200 kton-years of exposure is $9.6 \times 10^{33}$ years, which is competitive with the current best limits on the proton lifetime in this channel and complements the use of different detection technologies