The Management Research of Liquidity Risk Of Housing Accumulation Foud In Xiamen

受国家房地产调控政策影响，全国各地住房公积金交易量和公积金个贷量大幅增长，尤其近十年房价的只涨不跌，导致一些城市不断调整住房公积金贷款措施，或是降低首付款比例，或是大幅提高贷款额度，或是放宽贷款年限。今年上半年我国银行体系内的资金流动性短缺震撼了世界，并很快波及到住房公积金，一些城市随之出现住房公积金流动性紧张情况。 住房公积金流动性均衡是衡量住房公积金是否安全、完整的重要内容。如何有效应对住房公积金流动性风险，已成为当前住房公积金管理中所面临的突出问题，需要引起各方的高度重视。流动性问题的解决与否，直接影响公积金制度功能的实现和公积金行业管理水平的高低，影响政府的公信力。本文通过借鉴符合住...Affected by the national real estate regulation policy, housing provident fund and provident fund loan amount of trading across the country increase enormously. Especially in the recent ten years, house prices only rise but not fall which leads to some cities constantly adjusted housing provident fund loans measures, or reduced the proportion of the first payment, or substantially increase the amo...学位：工商管理硕士院系专业：管理学院工商管理教育中心（MBA中心）_工商管理硕士(MBA)学号：1792010115104

浅谈如何做好对工程造价的管理与控制

工程造价管理，是工程建设经济管理的重要工作，它始终贯穿于工程建设的全过程，即体现在对工程建设前期的可行性研究、投资决策、设计、施工到竣工交付使用前所需全部建设费用的确定、控制、监督和管理。由于项目的管理工作内容非常多样化，需要监管的内容众多，很容易产生遗留问题无法处理的情况。本文针对建筑工程的造价控制现状进行分析，针对工程造价控制方面的问题提出解决措施。</jats:p

Effects of Introduction of Foreign Gene on Activity and Isoenzyme of Superoxide Dismutase of Synechococcus sp.PCC7942

外源DNA导入Synechococcussp.PCC7942后,通过NBT光化还原和PAGE电泳检测发现转基因藻Syne chococcussp.PCC7942的SOD活性和同工酶谱发生了改变.若外源基因整合在受体细胞染色体DNA上,根据整合位点的不同则能提高或减弱Synechococcussp.PCC7942的SOD活性,同时增加同工酶谱带.若外源基因不是整合在染色体上而是以质粒的形式存在,则只改变Synechococcussp.PCC7942SOD活性而不影响其同工酶谱.The activity and the isoenzyme of superoxide dismutase (SOD) in three types of transgenic Synechococcus sp. PCC7942 were analysed by photoreduction of NBT and PAGE electrophresis. The results showed that introduction of exogenous DNA does change the activities and numbers of SOD isoenzyme bands. If esogenous gene were integrated into chromosomal DNA of host cell, it can enhance or reduce enzyme activity and add iosenzyme bands of SOD in transformed Synechococcus sp .PCC7942. But if exogenous genes existed in shuttle plasmid and not integrated into chromosome of host cell, it can enhance activity of SOD, but does not change the number of SOD isoenzyme band.福建省自然科学基金(B0210001);; 厦门市科技计划资

Studies on Transgenic Rice with Heat-shock Inducible Expression of Hd3a Gene

Hd3A(HEAdIng dATE 3A)基因是光周期诱导水稻开花过程中的一个关键调控基因,它在短日条件下表达并促进水稻开花.通过根癌农杆菌介导的方法将热激诱导表达的Hd3A基因转化到水稻品种日本晴中.热激处理转基因植株后,检测结果表明,叶片中转基因Hd3A的表达水平比热激前显著提高,随后又下降到热激前的水平,说明转基因Hd3A在水稻中可以被热激诱导瞬间的表达.长日条件下热激转基因水稻可成功诱导其抽穗,而同样处理的野生型植株不能抽穗,表明Hd3A的瞬间表达可诱导水稻开花,且其开花的早晚与热激处理的强度有关.Hd3a(Heading date 3a)plays a key regulatory role in the photoperiod flowering pathway of rice(Oryza sativa).In this study,a heat-shock inducible Hd3a gene was transformed into wild-type rice mediated by Agrobacterium tumifaciens.The result of real-time PCR analysis showed that the expression level of transgene Hd3a increased significantly after heating treatment,and soon decreased to the background level,which suggested that Hd3a expression can be induced transiently to a very high level.In the long-day condition,the flowering of transgenic rice can be induced by heating treatment,while wild type plants can not flower with the same treatment.It proved that a transient expression of Hd3a could induce transgenic rice to flower.There was a positive correlation between flowering time and heating treatment times.福建省青年人才项目(2006F3123);霍英东教育基金(111026)资

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^

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

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