侗族斜织机调查及研究

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..

分析当前水工环地质勘察中的技术及应用

随着社会的不断发展，中国的水工环地质勘察范围正在不断扩大。水工环地质勘察在水资源开发、环境地质评价等方面上都有着广泛的应用空间，发挥着重要的作用。在中国科学技术完善的背景下，水工环地质勘察工作逐渐地采用各种现代化技术作为支持，不断扩充其应用范围。从中国国情进行分析，存在着大量的资源浪费现象，这严重违背了可持续发展观，因此，要求相关管理人员和政府重视水工环地质勘察，引进更加先进的技术来促进水工环地质勘察工作的顺利开展。因此，论文围绕当前水工环地质勘察中的技术及应用为主题来展开分析，通过详细了解水工环地质勘察中的各种关键技术，探究当前水工环地质勘察中各技术的实际应用。</jats:p

基于SOA的网格安全技术研究

随着网格技术的不断发展以及对网格研究的不断深入,对网格安全的需求不提高,面向服务的体系结构研究成果为分布式、可扩展性、可跨域管理以及软件的重用与集成提供了一个最佳的解决方案。本文将网格所涉及的安全需求做成服务的形式,设计了一个面向服务的网格安全体系结构,并以网格认证服务为实例,探讨了网格安全服务的设计与重用,它集成了多种常用的认证技术,实现网格安全服务的跨域互操作

中国外来归化植物的编目现状及有关问题

在简要讨论外来植物相关定义的基础上,对中国外来归化植物的调查和编目现状进行了概述;并对近年发表的两篇文章中外来归化植物数据进行了订正

Determination of the number of ψ(3686) events taken at BESIII

The number of ψ(3686) events collected by the BESIII detector during the 2021 run period is determined to be (2259.3±11.1)×106 by counting inclusive ψ(3686) hadronic events. The uncertainty is systematic and the statistical uncertainty is negligible. Meanwhile, the numbers of ψ(3686) events collected during the 2009 and 2012 run periods are updated to be (107.7±0.6)×106 and (345.4±2.6)×106, respectively. Both numbers are consistent with the previous measurements within one standard deviation. The total number of ψ(3686) events in the three data samples is (2712.4±14.3)×10^

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