10 research outputs found

    Dynamic Analyses of the Impact of Macroeconomic Variables on Prices

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    针对当前我国经济运行中物价水平变动的影响因素及其存在的问题,通过引入脉冲响应函数和方差分解方法,向量自回归模型可以从客观上分析宏观主要经济变量对物价的动态冲击和影响。实证结果表明,经济变量对物价的影响各异且存在着一定的时滞效应。因而,有关部门在不同时期宜采取相应不同的调控措施,以维持物价的稳定和经济的持续发展。This paper is concerned with the factors in price fluctuations in current economic operations and their related problems in China.It proposes that it is possible to analyze quantitatively the dynamic impact of major macroeconomic variables on prices by creating the VAR model and its Impulse Response Function(IRF) and Variance Decomposition(VD).The results show that each economic variable influences the price in its own way,and that there exists a lagged effect to some degree.It is suggested that various regulatory measures be taken in different periods to maintain price stability and sustained economic development

    Application techniques of underwater TV system

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    详细介绍水下电视系统的一些技术问题,简介水下遥控摄象技术的特殊课题,并讨论水下电视应用中的某些关键技术。Some technical problems of underwater TV system are presented in this paper.Remote control technique For underwater camera is described.Some new key techniques For underwater TV systems are discussed

    HIRFL高频腔体功率耦合匹配实验研究

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     介绍了HIRFL主加速器SSC高频腔体功率馈入耦合匹配系统的研究,实验结果表明,通过改变耦合环角度可更好地实现高频腔体和高频发射机之间的匹配,提高了高频腔体电压和高频发射机的工作效率

    一种载人潜水器非接触式补偿油量检测传感器装置

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    本发明涉及一种载人潜水器非接触式补偿油量检测传感器装置,包括传感器杆体和铁氧体磁滑环组件;所述铁氧体磁滑环组件,用于根据油量补偿器油量的变化在传感器杆体上移动;在传感器杆体内设置测量电路,用于根据铁氧体磁滑环组件的移动获取油量补偿器的油量位移量。本发明采用非接触测量方式,外部采用耐腐蚀的铁氧体磁滑环,线性触发磁敏干簧管开关,实现补偿器液位的检测,具有高集成度、高可靠性和高准确度,可以进行线性扩展,满足不同容量的补偿器液位测量需要

    A Study on China's Energy Consumption by Bayesian Spatial Econometric Model

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    Conference Name:International Conference on Future Energy, Environment, and Materials (FEEM). Conference Address: Hong Kong, PEOPLES R CHINA. Time:APR 12-13, 2012.Energy is a bottleneck, which restrains the development of China's economy and society. Our government has always been attaching great importance to energy problem. In China, there exist space-time correlation and differences in energy consumption and efficiency among different areas. The purpose of this paper is to study the spatial correlation and heterogeneity in energy consumption among different provinces, as well as the mechanism of the spatial effects of economic growth on energy consumption, energy prices, and population growth by means of constructing Bayesian spatial econometric model. (C) 2011 Published by Elsevier B.V. Selection and/or peer-review under responsibility of International Materials Science Society

    Biodiversity and screening of culturable actinobacteria against Fusarium oxysporum isolated from mangrove soil in Maowei sea

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    目的研究茅尾海红树林植物根际土壤放线菌多样性并进行抗菌活性筛选,为发现放线菌新物种以及新农用生防菌奠定基础。方法采用传统涂布分离方法和复合营养成分培养基,从25份红树林土壤样品中分离放线菌;通过PCR扩增菌株16S r RNA基因序列,并通过构建系统发育树研究放线菌多样性;采用纸片扩散法分析放线菌发酵液和乙酸乙酯萃取浓缩液对2种尖孢镰刀菌菌体拮抗和孢子萌发抑制活性。结果通过排重获得117株放线菌,16S r RNA基因序列比对分析表明117株放线菌分布于6个亚目10个科19个属,除优势菌属链霉菌属外,还发现纤维微球菌属,戈登菌属,栖白蚁菌属,拟诺卡菌属和植物放线孢菌属等稀有放线菌属;尖孢镰刀菌拮抗活性试验表面,共有23株放线菌在至少1个抗菌活性检测中显示为阳性,总阳性率为19.66%。结论广西北部湾茅尾海红树林根际土壤中存在丰富的放线菌资源,具有从中发现新物种和新型农用生防菌的潜力。Objective To investigate the biodiversity and bioactivity of anti-Fusarium oxysporum of actinobacteria isolated from mangrove soil in Maowei sea in Guangxi Province. Methods Actinobacteria were isolated from a total of 25 soil samples by traditional plate dilution method only using one isolation media containing nutritional composition. Diversity of culturable actinobacteria were analyzed based on comparison of 16S rRNA gene sequences. The antiftmgal activity of ethyl acetate extracts from the fermentation broth and crude fermentation broth of the strains were tested by disk diffusion method. Results A total of 117 actinobacteria strains were distributed in 19 genera affiliated with 10 families of 6 orders, including Streptornyces, Cellulosimicrobium, Gordonia, lsoptericola, Nocardiopsis, Plantactinospora, in which Streptomyces was the dominant genera. Twenty-three strainsexhibited positive results in at least one antifungal assay against mycelia growth or spore germination, and the total positive rate was 19.66%. Conclusion The study indicated that the abundance of culturable actinobacteria with antibiotic activity to Fusarium oxysporum in mangrove soilde served further exploration and research for biocontrol strains.国家自然科学基金(No.31260004,31660005); 南宁市科技局项目(No.20153330); 广西民族大学相思湖青年学者创新团队资助项目(No.201406

    塔里木河中下游荒漠化防治与生态系统管理研究与示范

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    该项目成果建立了荒漠区生态环境与经济和谐发展的模式,为正确处理生态环境建设与经济发展的关系提供了理论依据;建立了塔里木河中下游土地利用的5种模式和适宜性评价体系;创立了塔里木河中下游生态经济型植被的模式和结构优化配置方案;提出了6项绿洲灌溉农业节水节肥和棉花高产技术;确定了维护塔里木河中下游至大西海子和台特马湖生态安全的最低年需水量、最佳输水期,提出了塔里木河中下游天然植被合理地下水位的科学依据;揭示了塔里木河中下游30年断流输水后地表生态的响应规律;构建了数字塔河的框架,完成了水、土、植被等23个因子的图层

    JUNO Sensitivity on Proton Decay pνˉK+p\to \bar\nu K^+ Searches

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    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 pνˉK+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 pνˉK+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 9.6×10339.6 \times 10^{33} years, competitive with the current best limits on the proton lifetime in this channel

    JUNO sensitivity on proton decay pνK+p → νK^{+} searches

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    JUNO sensitivity on proton decay p → ν K + searches*

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    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 pνˉK+ 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 pνˉK+ p\to \bar{\nu} K^+ is 36.9% ± 4.9% with a background level of 0.2±0.05(syst)±0.2\pm 0.05({\rm syst})\pm 0.2(stat) 0.2({\rm stat}) events after 10 years of data collection. The estimated sensitivity based on 200 kton-years of exposure is 9.6×1033 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
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