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2012年7月,我们在对三江侗族自治县的同乐、高定、唐朝等地考察中发现,现侗族地区仍普遍使用的斜织机,虽然在机械结构方面比较简单,但实用性极强,在不加挂花综时,是一种典型的多综多蹑织机,而在加挂花综后,又变成一种用少蹑控制多综的比较特殊的综蹑机型,亦称为低花本织机。由于它既适宜织造普通平纹和斜纹织物,又可用于织锦,在偏远地区的侗族聚落,至今依旧有一定的实用价值。基于此次考察以及相关文献,对侗族这种织机的结构、织造工艺特点,特别是花综的开口操作,进行了解析;同时,对其技术源流及与壮族竹笼机之相互关系进行了初步探讨,认为这种斜织机最初出现在汉族地区,后流传到少数民族地区,并在此地区得到保留;壮族竹..

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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