难以根治性切除大肝癌经皮肝动脉化疗栓塞术后二期切除的疗效分析

【目的】探讨难以根治性切除的大肝癌经皮肝动脉化疗栓塞术（TACE）治疗后手术切除的意义及疗效。【方法】分析143例难以根治性切除的大肝癌临床病理资料，其中68例经TACE治疗后二期切除（A组），75例未行术前TACE单纯切除（B组）。观察TACE前后肿瘤变化情况，比较两组患者的术后情况、癌残留率，以及两组病人的术后生存率及无瘤生存率。【结果】①A组经TACE后肿瘤有不同程度的缩小，且肿瘤坏死增多，周围子灶的检出率增加22．1％；肿瘤与周围脏器的粘连增加，而肿瘤包膜形成增多、癌残留率显著降低（P〈0．05）；②A组的术中出血量和肝门阻断时间均较B组有不同程度增加，但差异无统计学意义．两组术后严重并发症比较差异无统计学意义（P〉0．05）；③A组患者1、3、5年生存率和无瘤生存率为88．2％、53．0％、36．1％和65．7％、37．7％、30．4％；B组分别为68．8％、36．9％、25．1％和46．2％、24．4％、9．7％，两组差异有统计学意义（P〈0．05）。【结论】术前TACE使难根治性切除大肝癌肿瘤缩小、包膜形成和癌残留减少，有效地提高大肝癌根治性切除率，延长实际生存期

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

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^