摘要：At present,there are few programs that can be used directly for ADS sub-critical core design and burnup problem mainly because most programs cannot simultaneously calculate proton spallation processes and transport problems of high-energy *** we use the COUPLE3.0 to accomplish all the calculation task in this *** COUPLE3.0 program is a three-dimensional transport-burnup simulation program developed by Institute of Modern Physics,Chinese Academy of *** transport calculation part of COUPLE3.0 program is Monte Carlo code MCNPX2.7 and the burnup calculation is performed by *** of COUPLE3.0 program has been verified by a lot of *** COUPLE3.0 program has four function modules:neutron irradiation burnup calculation,proton irradiation calculation,critical calculation and the data post-processing *** these function modules,COUPLE3.0 program can solve the neutron problem of ADS system.

摘要：采用个案研究法,挖掘和收集学生在化学模拟考试视频中作答跳转模式的序列数据,结合访谈和实物资料,发现反映学生考场心态的作答顺序、时间分配、审题习惯和用笔习惯等具体行为表现,以提高学生对自己作答状态的元认知水平。通过改善具体行为而有效改善考场心态,促进高考成绩能够真实反映学生的学习水平,提高考试测量的科学性和准确性。

摘要：随着煤炭资源开采向深部发展,深部巷道的变形破坏机理和稳定性控制成为了研究的重点。文章通过理论分析研究了深部巷道塑性区的大小的影响因素。通过实际算例,研究了塑性区半径与地应力、围岩力学性能以及支护反力之间的关系,最后通过数值模拟的手段加以验证。结果发现深部巷道的塑性区面积大,控制难度大,可以通过增加支护强度和改善巷道周围围岩的力学性能的手段设计支护方案,为深部巷道的稳定性控制提供借鉴。

摘要：[目的/意义]在学术文献检索与阅读场景下,当前学术信息量已远超用户信息处理能力,造成信息堆积。为应对用户阅读效率与知识吸收难题,面向学术文献检索结果集开展内容的综合挖掘揭示。[方法/过程]一方面从阅读体验出发,针对文献检索场景的特点,进行结构化综述表达设计;另一方面从技术方法与内容质量提升出发,利用基于深度学习的文本自动生成技术,构建科技文献数据集,训练并优化文本摘要模型,在此基础上利用大语言模型技术实现结构化的综述文本生成。[结果/结论]训练优化后的摘要模型在各指标的召回率和F1值上平均增长2.07%。基于大模型的结构化综述生成,在实际测评中能够有效地提炼、总结和归纳内容要点,验证本文技术路线和应用实践的可行性,为进一步提升学术文献的知识化服务水平、智能辅助阅读与语义内容综合挖掘揭示等方面提供应用实践指南。

摘要：对比国内现行三种版本高中化学教材中关于乙烯和溴的加成反应实验,发现都没有能让学生肉眼真正看到反应产物1,2-二溴乙烷的产生。为此,进行了创新设计并实施了乙烯和溴的喷泉实验,达到了乙烯和溴加成实验产物的可视化的效果。此外,从该加成反应机理的角度阐释了乙烯和溴不同条件下产物不同的原因。

摘要：对于具有独立回路冷却液态铅铋(Liquid Lead-bismuth Eutectic,LBE)散裂靶的加速器驱动的次临界系统(Accelerator Driven Sub-critical System,ADS),高能质子束流辐照靶体产生的散裂产物进入管道后,会持续释放光子,会对靠近流动管道的工作人员造成辐射损伤。本文利用高能粒子输运程序Fluka计算散裂靶的散裂产物累积产额,然后利用放射性衰变计算程序Origen2计算散裂产物释放的光子强度及分群能谱,最后利用Fluka进行流动管道内光子源项的屏蔽计算。对一种典型的Y型LBE有窗靶进行的流动管道屏蔽计算结果表明,参照GB18871-2002职业性放射性工作人员年剂量当量限值20 m Sv的标准,若使用铅作为屏蔽材料,流动管道的管壁应该加厚20 cm。本文工作可为ADS系统LBE有窗靶的回路屏蔽设计提供参考。

摘要：The multiple quantum transitions within d-band correlation oxides such as rare-earth nickelates(RENiO_(3))triggered by critical temperatures and/or hydrogenation opened up a new paradigm for correlated electronics applications,*** electric field sensor,bio-sensor,and neuron synapse logical ***,these applications are obstructed by the present ineffectiveness in the thin film growth of the metastable RENiO_(3)with flexibly adjustable rare-earth compositions and electronic ***,we demonstrate a metal-organic decompositions(MOD)approach that can effectively grow metastable RENiO_(3)covering a large variety of the rare-earth composition without introducing any vacuum *** the previous chemical growths for RENiO_(3)relying on strict interfacial coherency that limit the film thickness,the MOD growth using reactive isooctanoate percussors is tolerant to lattice defects and therefore achieves comparable film thickness to vacuum *** indicated by positron annihilation spectroscopy,the RENiO_(3)grown by MOD exhibit large amount of lattice defects that improves their hydrogen incorporation amount and electron transfers,as demonstrated by the resonant nuclear reaction analysis and near edge X-ray absorption fine structure *** effectively enlarges the magnitude in the resistance regulations in particular for RENiO_(3)with lighter RE,shedding a light on the extrinsic regulation of the hydrogen induced quantum transitions for correlated oxides semiconductors kinetically via defect engineering.

摘要：*** target physics computation The purpose of physical check is mainly to check whether the parameters in the XADS reports[1]are reasonable,to give the results and analysis and get the energy distribution of the target window and target zone,so as to provide heat source for thermal engineering and *** to the reference,the proton beam energy is 600 MeV and the beam current is 6 *** footprint of the beam has a circular shape with the radius of 8 cm and the beam intensity following an elliptical radical distribution is *** thickness of target window and beam tube is 3 mm,and the thickness of structural material is 5 mm,and the spherical radius of target window is 10 *** metal material is *** physical check calculations are accomplished by *** final physical results are showed in Table 1.

摘要：目的探讨自行设计的一种新型便携式肠内营养包用于急性胰腺炎(AP)患者家庭肠内营养的可行性和应用效果。方法选取2022年4月至2023年6月间海军军医大学第一附属医院消化内科收治的60例出院后仍需要家庭肠内营养的MSAP及SAP患者,按照数字表法随机分为使用新型便携式肠内营养包组(观察组,28例)和常规肠内营养组(对照组,29例)。出院前给予患者相关肠内营养指导,出院后每周进行电话随访,指导患者相关家庭肠内营养问题的解决,拔管后随访终止。记录出院前患者年龄、性别、体重指数、疾病严重程度、相关实验室检查指标(白细胞、血红蛋白、白蛋白、总蛋白)、胰腺炎相关并发症及随访期间体重指数变化、相关实验室检查指标、消化道症状、感染相关并发症、营养管相关并发症及Barthel指数评分等。结果两组患者各项基线指标差异无统计学意义,具有可比性。随访第1、2、3、4周,两组患者感染及营养管相关并发症的发生率差异无统计学意义,但观察组消化道症状发生率显著低于对照组,差异有统计学意义(P<0.05)。随访第3周和第4周,观察组患者的体重指数[(22.38±3.84)kg/m^(2)比(20.38±3.56)kg/m^(2)、(22.59±3.77)kg/m^(2)比(20.54±3.37)kg/m^(2)]、血红蛋白水平[(125.00±13.46)g/L比(113.4±13.64)g/L、(126.20±14.37)g/L比(114.3±13.25)g/L]、白蛋白水平[(40.96±3.07)g/L比(39.17±3.31)g/L、(41.79±2.73)g/L比(39.97±2.67)g/L]及生活能力评分[(87.32±5.85)分比(82.59±9.79)分、(89.64±1.31)分比(83.97±8.80)分]均显著高于对照组,差异均有统计学意义(P值均<0.05)。结论使用新型便携式肠内营养包有助于减少需长期肠内营养的AP患者的消化道症状,提升营养状态,改善生活能力。

摘要：为了提高规模化养殖禽舍内环境质量的调节效率,设计了采用可编程逻辑控制器自动调节通风窗开度的开窗机。针对禽舍内实际环境调节的需要,在实现对机械结构设计的基础上,对控制系统及其算法进行了设计分析。实践表明:该开窗机自动化程度高、操作简便、易于控制,能够实时有效调节通风窗开度,并通过控制器协同风机等其他装置,共同完成对禽舍内环境质量的调节。