浸润性乳腺癌中FosB的表达与超声征象及临床病理的相关性

【目的】分析FosB在浸润性乳腺癌中的表达及临床病理意义，并探讨其与超声征象的相关性。【方法】收集155例浸润性乳腺癌组织、36乳腺癌旁组织及30例正常乳腺组织做为对照，均采用免疫组织化学SP法和超声检测，分析FosB在浸润性乳腺癌中的的表达差异与组织学分级、淋巴结转移、超声征象等的关系。【结果】①FosB在癌旁组织及正常乳腺组织中的表达水平明显高于浸润性乳腺癌组织中的表达（P＜0.01）。②FosB在浸润性乳腺癌组织中的高表达与低组织学分级、ER阳性及PR阳性相关（P＜0.05），与肿物直径大小、年龄、淋巴结转移、Her2及临床分期无关（P＞0.05）。③FosB在存在微钙化或腋窝淋巴结增大的浸润性乳腺癌组织中高表达，差异有统计学意义（P0.05）。【结论】FosB在乳腺癌组织中的表达水平明显低于癌旁组织及正常乳腺组织，其差异表达与组织学分级、ER、PR相关，有助于乳腺癌的鉴别诊断和指导ER/PR相关患者的个性化治疗。FosB在乳腺癌组织中的差异表达还与微钙化、腋窝淋巴结存在一定的相关性，联合超声与FosB能够更加明确的判读浸润性乳腺癌的恶性程度

Quantum Chemical Study of Chemisorption States For Oxygen on Alkali Metal Oxides and SulFides

碱金属氧化物和硫化物晶面上氧吸附态的量子化学研究＠戴玉梅＠林银钟＠陈鸿博＠洪琦＠易军＠陈守正＠廖代伟￥福建师范大学化学系￥厦门大学物理化学研究所￥厦门大学化学系￥固体表面物理化学国家重点实验室碱金属氧化物和硫化物晶面上氧吸附态的量子化学研究戴玉梅1林银钟2...The Chemisorption States For O_2 on (100), (110) and (111) surFaces of Li_2O, Li_2S, Na_2O and Na_2S with the Flat-lying model, inclined model and vertical model are studied by CNDO/2LMO.The calculations indicated that, in energy, the (100) surFace and Flatlying model are the most Favorable while the chemisorbed O_2 is excitation state.The results also showed that the decrease in cation radius is in Favor of both chemisorption and activation of oxygen.国家自然科学基金;福建炼油厂资

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

Prediction of Energy Resolution in the JUNO Experiment

International audienceThis paper presents the energy resolution study in the JUNO experiment, incorporating the latest knowledge acquired during the detector construction phase. The determination of neutrino mass ordering in JUNO requires an exceptional energy resolution better than 3% at 1 MeV. To achieve this ambitious goal, significant efforts have been undertaken in the design and production of the key components of the JUNO detector. Various factors affecting the detection of inverse beta decay signals have an impact on the energy resolution, extending beyond the statistical fluctuations of the detected number of photons, such as the properties of liquid scintillator, performance of photomultiplier tubes, and the energy reconstruction algorithm. To account for these effects, a full JUNO simulation and reconstruction approach is employed. This enables the modeling of all relevant effects and the evaluation of associated inputs to accurately estimate the energy resolution. The study reveals an energy resolution of 2.95% at 1 MeV. Furthermore, the study assesses the contribution of major effects to the overall energy resolution budget. This analysis serves as a reference for interpreting future measurements of energy resolution during JUNO data taking. Moreover, it provides a guideline in comprehending the energy resolution characteristics of liquid scintillator-based detectors

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