Research on Developing Reverse Mortgage in China

随着我国社会老龄化的到来，养老压力日益突出，养老危机已经现实地摆在国人的面前。与发达国家不同的是，我国是在经济没有达到充分发展、人均收入较低的情况下提前进入老龄化社会的，可利用的公共养老资源缺乏，社会保障体制不健全，养老资金缺口巨大。由此，我国面临着较发达国家更为严峻、复杂的养老形势。发达国家进入老龄化社会的时间较长，社会保障制度也比较完善。因此，借鉴发达国家成熟的养老经验，开发适合我国的养老金融产品，实现养老问题上的制度创新和观念创新，是应有之义。为此，对在适当时机在我国推出反向抵押贷款的研究，正开始受到社会各界的重视。 在发达国家有一种行之有效的养老金融产品——反向抵押贷款。反向抵押贷款...As Chinese aging society is coming, the retirement pressure is pop out increasingly, Chinese people must face to the aging crisis practically. Different from the developed countries, our country coming into aging society in advance with incompletely developed economy and low income per capita, we are short of usable retirement resources, we do not have a sound society security system, and we have ...学位：经济学硕士院系专业：经济学院财政金融系_金融学(含保险学)学号：S20044203

售房养老———中国老龄化趋势下养老问题的新思路

随着我国老龄化社会的到来，养老压力日益突出，传统养老模式已不能适应和满足市场经济条件下的养老需求。本文提出一个养老的新思路———售房养老，并在介绍售房养老的理论根源和基本思路的基础上，介绍售房养老模式的运行机制，提出有待解决的问题

售房养老——中国老龄化趋势下养老问题的新思路

随着我国老龄化社会的到来,养老压力日益突出,传统养老模式已不能适应和满足市场经济条件下的养老需求。本文提出一个养老的新思路——售房养老,并在介绍售房养老的理论根源和基本思路的基础上,介绍售房养老模式的运行机制,提出有待解决的问题

田菁根瘤菌YIC4027可溶性趋化受体Tlp1的功能鉴定

【目的】初步探究田菁根瘤菌Sinorhizobium alkalisoli YIC4027中唯一含有PAS结构域可溶性趋化受体Tlp1的功能机理。【方法】本研究基于Red重组系统以及三亲接合技术进行缺失突变株的构建。对野生型和突变株的生长情况、趋化能力、趋氧性、细胞凝结、生物膜的形成、胞外多糖产量、在宿主根表的定殖及竞争性结瘤等表型进行了测定。【结果】与野生型相比,突变株的生长不受影响,趋化和趋氧能力降低,在宿主根表的定殖及竞争性结瘤能力降低,而细胞凝结能力、生物膜形成以及胞外多糖产生能力等均有所提高。【结论】本研究首次证实了S. alkalisoli YIC4027中可溶性趋化受体Tlp1影响细胞的趋化运动

田菁根瘤菌YIC4027可溶性趋化受体Tlp1的功能鉴定

【目的】初步探究田菁根瘤菌Sinorhizobium alkalisoli YIC4027中唯一含有PAS结构域可溶性趋化受体Tlp1的功能机理。【方法】本研究基于Red重组系统以及三亲接合技术进行缺失突变株的构建。对野生型和突变株的生长情况、趋化能力、趋氧性、细胞凝结、生物膜的形成、胞外多糖产量、在宿主根表的定殖及竞争性结瘤等表型进行了测定。【结果】与野生型相比,突变株的生长不受影响,趋化和趋氧能力降低,在宿主根表的定殖及竞争性结瘤能力降低,而细胞凝结能力、生物膜形成以及胞外多糖产生能力等均有所提高。【结论】本研究首次证实了S. alkalisoli YIC4027中可溶性趋化受体Tlp1影响细胞的趋化运动

田菁根瘤菌YIC4027可溶性趋化受体Tlp1的功能鉴定

【目的】初步探究田菁根瘤菌Sinorhizobium alkalisoli YIC4027中唯一含有PAS结构域可溶性趋化受体Tlp1的功能机理。【方法】本研究基于Red重组系统以及三亲接合技术进行缺失突变株的构建。对野生型和突变株的生长情况、趋化能力、趋氧性、细胞凝结、生物膜的形成、胞外多糖产量、在宿主根表的定殖及竞争性结瘤等表型进行了测定。【结果】与野生型相比,突变株的生长不受影响,趋化和趋氧能力降低,在宿主根表的定殖及竞争性结瘤能力降低,而细胞凝结能力、生物膜形成以及胞外多糖产生能力等均有所提高。【结论】本研究首次证实了S. alkalisoli YIC4027中可溶性趋化受体Tlp1影响细胞的趋化运动

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→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