厦门市思明区老年人对医养结合养老模式的认知和参与意愿现状及其影响因素

目的:调查厦门市思明区老年人对医养结合养老模式的认知及参与意愿,分析其影响因素,为推进医养结合养老工作的发展提供参考。方法:采用方便抽样方法,对户籍在厦门市且居住在思明区的60周岁及以上的114名老年人进行问卷调查。结果:目前厦门市思明区老年人对医养结合养老模式的认知处于较低水平,参与意愿偏低。年龄、文化程度、子女、了解程度是影响老年人医养结合养老模式参与意愿的因素,其中文化程度、了解程度是影响参与意愿的主要因素。结论:养老机构应采取形式多样的宣传教育,提高老年人对医养结合养老模式的了解程度及参与意愿,推进医养结合养老产业的发展

介孔Co-Al_2O_3催化剂上甲烷部分氧化制合成气

采用一锅法制备了介孔Co-Al2O3催化剂,并首次用于甲烷部分氧化制合成气反应. 结果表明,与普通浸渍法相比,一锅法制备的Co-Al2O3催化剂表现出更为优异的催化性能. 合成的介孔Co-Al2O3催化剂具有大的比表面积和孔体积,以及规整有序的六方介孔孔道,Co物种高度分散,从而导致还原后高的金属分散度,而介孔孔道对金属纳米颗粒的约束作用可有效增强金属的抗烧结能力

Development of Portable Sensing Apparatus for Biochemical Oxygen Demand Determination Based on Fluorescent Response

利用氧荧光猝灭原理研制了台式生化需氧量(BOD)传感检测仪器。仪器的工作系统由检测系统和软件系统两部分组成。该检测仪操作简便,检测快速,可进行海水BOD含量的现场检测。仪器的性能考察结果表明,在0.5~50mg/L浓度范围内BOD响应的线性相关系数为0.9978。实际海水样品的检测结果显示,仪器对海水样品的平行测定结果相对标准偏差小于±5%,并且与标准五日生化需氧量(BOD5)方法所获得的数值的相关性为0.99。仪器具有较长的使用寿命和良好的稳定性。A portable biochemical oxygen demand(BOD)sensin g apparatus based on the fluorescent quenching of oxygen was developed for BOD d etermination.The apparatus showed good characteristics such as easy manipulatio n,rapid response and practicable in situ measurement for BOD in seawater.The l inear fluctuant coefficient(R2)in the BOD concentration range from 0.5 t o 50 mg/L was 0.9978.A reproducible response of less 5 % for the BOD apparatus could be obtained in the analysis of real seawater samples.The values estimate d by this biosensing apparatus correlated well with those determined by the conventional 5-day BOD(BOD5)test.The investigation results indicated t hat the apparatus presented its long application life and good stability.国家863计划项目(No.2006AA09Z160);; 教育部“新世纪优秀人才支持计划”课题资

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