浅析区外模式对遗址博物馆的保护利用

遗址是人类历史发展与自然环境变化的见证者,承载着浓厚的文化底蕴,在当代社会文化教育中有着重大作用,主要是以遗址为核心的建筑体,展示人类文化的多样性。随着考古事业的大发展,越来越多的遗址的保护与传承问题得到社会人群的重视,诸多遗址早已发掘,但遗址的保护措施依然尚未完善。而“区外模式”主要从建设博物馆的角度来增强对遗址的保护利用,让更多的观众从博物馆走向遗址,感受遗址,触碰遗址。

Numerical Simulation of Seeding Extra-Area Effects of Precipitation Using a Three-Dimensional Mesoscale Model

The Fifth-Generation NCAR/Penn State Mesoscale Model (MM5) has been used to investigate the extra-area effects of silver iodide (AgI) seeding on stratiform clouds performed at the supercooled layer.A bulk two-moment microphysical scheme and the new software package for silver iodide are incorporated in MM5.Extra conservation equations are applied to trace the seeding agent,which is transported along the flow field and interacts with the supercooled cloud fields.In this study,the model was run using three nested grids,with 3.3 km × 3.3 km horizontal resolution in the finest grid.The model results showed that seeding with AgI at the 5 to 15℃ levels had microphysical effects on the simulated clouds and that the simulation produced a longer-lasting seeding effect because of the transport of the seeding agent by upper-level winds.Most of the AgI particles acted as deposition nuclei,and the deposition nucleation process contributed mostly to additional cloud ice formation in this study.The results showed that more precipitation results from seeded than unseeded case,and the precipitation was redistributed downwind of the target.Augmented precipitation (varying from 5% to 25% downwind) was confined in space to within 250 km of the seeding target and in time to the 3-h period after initial seeding.

Catchment-based Imperviousness Metrics Impacts on Floods in Niushou River Basin,Nanjing City,East China

Concerns regarding urbanization impacts on floods gradually moved from end-of-pipe solutions, based on open channel hydraulics improvement, to imperviousness ratio limiting and then to land use control and to integrated planning at local and large scale levels. The Niushou River basin is one of the fastest urbanizing areas in Nanjing City, East China, however, the high urban land percentage has leaded to series of flooding events. The paper aims to reveal the impact of imperviousness ratio, patterns and drainage system on flooding areas based on the unit of catchment and Storm Water Management Model(SWMM). The following conclusions were reached. 1) The ratio or spatial characteristics of the impervious surface affected the runoff volumes and associated floods areas. Despite the well-established drainage system, the high imperviousness ratio, particularly clustered pattern in locations such as hydrological sensitive zones aggravated the flooding tension across the basin. 2) The poor drainage hydraulic efficiency in local areas, and the lack of integral processes of infiltration, yield, storage and discharge in local catchment and larger basin are also significant factors. 3) The Niushou River basin development should improve the drainage transformations from a single local, short-term drainage process into integral, elastic processes of infiltration, yield, storage, and discharge.

Influence of Filtration Processes on Aqueous Nanostructures by NIR Spectroscopy

Filtration processes are worldwide used for sterilizing solutions and substrates. Filtration seems to induce the formation of aqueous nanostructures. The aim of this work was to verify the influence of filtration processes on water structure detected by spectral variations in NIR region. Samples of ultrapure water （MilliQ-Millipore, Vimodrone, Milan, Italy） before and after iterated filtrations were analyzed. NIR spectra were collected in transmission mode in the whole NIR range, by using NIRFIex N500 spectrometer at constant temperature （40 ± 1 ℃）. NIR data were processed using Unscrambler software v. 9.2 in evaluating qualitative differences between filtered and not filtered samples. The information related to possible solvent physical stresses were highlighted in the range 6500-7500 cm^-1. The shifts observed were ascribable to a different distribution of the number of water molecules involved in hydrogen bonds in filtered and not filtered water samples, at constant temperature. NIR spectroscopy, commonly used to study relationship between spectral changes and hydrogen bonds in water at increasing temperature values, was applied to evaluate effects of filtration processes on water structure. The obtained results are in agreement with literature data and allowed the improvement of the knowledge about pure water characteristics when some mechanical perturbations are applied.

Experience and Enlightenment of Serve the Old in Abroad Urban Community

At present, the world＇s aging population is developing at an unprecedented rate, how to deal with the community service for the elderly has become a top priority. For it not only relates to the community＇s harmony but also to the whole social＇s stability. This paper summarized some experiences and practices from some typical foreign countries on their community endowment, such as the British community care model, the Japan＇s aged care at home, the PACE mode of United States, the Germany＇s long-term care services, the Australian＇s old-age community security. On the basis of a comparative analysis, this paper concluded some experience and enlightenment of serving the old in abroad urban community, this include： Give full play to the function and role of the community in the pension, take law as safeguard on the implementation of community endowment, professional services, government-led and multiple subject participation, provide comprehensive and diversified service, etc. Combined with China＇s national conditions, this paper puts forward some countermeasures and suggestions in the end to further perfect China＇s elderly community service.