一种360度全景监控系统

本发明提供了一种360度全景监控系统，包括摄像模块、视频采集模块、视频处理模块以及视频显示模块，其中摄像模块是由十一路位于球体表面的摄像头组成，该十一路摄像头规则分布在球体的上、下表面，交互结合组成了360度的全景无死角的监控网络，使监控系统能够采集全景的视频信息，因此真正实现了全方位、高质量的360度全景监控，具有良好的应用前景

四株草鱼呼肠孤病毒毒株的细胞感染特性比较研究

本文首次对低温保存的三株草鱼呼肠孤病毒GCRV873 、GCRV875、GCRV876与新分离的GCRV991毒株进行了细胞培养与病毒感染特性等比较研究。结果表明 ,GCRV873 、GCRV875、GCRV876在 - 30℃保存 10年后仍然具有一定的感染性 ,其滴度均在 10 2 TCID50 /mL以上 ,略低于从病鱼组织分离的GCRV991毒株的滴价。经传代培养后 ,四株GCRV的毒力逐渐升高 ,并趋于稳定 ;当感染复数 (MOI)为 0 .0 5PFU/cell时 ,测定四株GCRV的滴度均

High-density matter: current status and future challenges

There are many fascinating processes in the Universe which we observe in more and more in detail thanks to increasingly sophisticated technology. One of the most interesting phenomena is the life cycle of stars, their birth, evolution and death. If the stars are massive enough, they end their lives in the core-collapse supernova explosion, the one of the most violent events in the Universe. As the result, the densest objects in the Universe, neutron stars and/or black holes are created. Naturally, the physical basis of these events should be understood in line with observation. The current status of our knowledge of processes in the life of stars is far from adequate for their true understanding. We show that although many models have been constructed their detailed ability to describe observations is limited or non-existent. Furthermore the general failure of all models means that we cannot tell which are heading in the right direction. A possible way forward in modeling of high-density matter is outlined, exemplified by the quark-meson-coupling model (QMC). This model has a natural explanation for the saturation of nuclear forces and depends on very few adjustable parameters, strongly constrained by the underlying physics. Latest QMC results for compact objects and finite nuclei are presented

Dislocation reactions dominated pop-in events in nanoindentation of Ni-based single crystal superalloys

In this paper, from both experimental and atomistic simulation perspectives, we have systematically elaborated on the formation of stacking fault tetrahedrons that induces the pop-in events in Ni-based single crystal superalloys under nanoindentation. The magnitude of a displacement burst is proportional to the number and size of stacking fault tetrahedrons. The external work and strain energy stored in dislocations are further discussed in order to ascertain the energy conversion during pop-in events. The findings can provide new insights into a deep understanding of the pop-in events in Ni-based single crystal superalloys and benefit their wide applications in the aerospace industry

我国地球化学块体内矿产资源潜力预测

中国地质调查局发展研究中心 ； 中国地质大学(北京) ； 中国地质科学院地球物理地球化学勘查研究所 ； 新疆维吾尔自治区地质调查院 ； 贵州省地质调查院 ； 青海省地质调查院 ； 西藏自治区地质调查院 ； 甘肃省地质调查院 ； 四川省地质调查院 ； 云南省地质调查院 ； 宁夏回族自治区地质调查院 ； 内蒙古自治区地质调查

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