胶州湾红岛码头疏浚物质输移扩散数值预测

利用有限元分步杂交法，首先对胶州湾海域潮流场进行了数值模拟，进而建立了胶州湾疏浚物悬浮泥沙的二维输运——扩散模型，并应用于胶州湾红岛拟建码头疏浚区的疏浚物输运扩散数值模拟预测，根据预测结果分析了红岛码头疏浚区施工期间悬浮泥沙对附近水环境的影响。     

Limits of warm and cold bioclimatic stress in different climatic regions

Summary Limits of warm and cold stress in different climatic regions are determined by means of temperature, wind speed and humidity for the period 1976–1985. These values are measured at 2 PM local time during July for warm stress and at 7 AM local time during January for cold stress. Hvar (20 m ASL) is used to represent maritime climate, Zavian on the top of Mount Velebit (1594 m ASL) and Skrad (668 m ASL) in Gorski Kotar are representative of mountainous climate, and Zagreb (128 m ASL) is representative of continental low-land climate. Values of a biometeorological Temperature-Wind Speed-Humidity (TWH)-index higher than the 98% value of the theoretical distribution fitted to empirical data represent above normal extreme conditions at a given location, and TWH values less than 2% value of the theoretical distribution represent below normal extreme conditions. For similar temperatures, it will be extremely above normal at the top of Mount Velebit (Zavian) whilst normal on the coast (Hvar), and similarly, it will be extremely below normal in Hvar but normal at Zavian.With 4 Figures     

An analysis of active close binaries (CB) based on photometric measurements

For the purpose of analysing light curves of active CB with an accretion disc being at the evolutional phase of an intensive matter exchange between the components a model for light-curve synthesis has been realized where the attention is given to systems like W Ser not sufficiently examined yet with regard that in them the accretion disc is formed around an ordinary star. In the paper one uses the elements presented in the first paper of this series. The model can successfully describe the essential characteristics of the observed light curves due to existence of an accretion disc and a hot spot, as well as those originated in the temperature distribution along the disc radius. The system components are considered in the framework of the nonsynchronous Roche model and the accretion disc of a constant thickness lies in the orbital plane around the star capturing the matter of the neighbouring component.The primary surrounded by the disc is situated relatively well within the Roche oval and its rotation can be significantly nonsynchronous. Near the Lagrange equilibrium pointL ₁ flows from the secondary (which fills the Roche limit) the gas stream nourishing the disc. In the zone where the stream touches the lateral side of the disc a hot spot is formed.The proposed model enables estimating of the basic orbital and physical parameters of active type W Ser CB (Djuraevi, 1991) on the basis of photometric measurements by applying the inverse-problem method.     

Orbital eccentricity study for the spherical component of our galaxy

An analysis of the data concerning high-velocity stars from Eggen's catalogue aimed at a determination of the approximate slope of the mass function for the spherical component of our Galaxy, and at estimating the local circular velocity, as well as the local rotation velocity, as by-products, has been performed. Our conclusions are that:

1. A linear dependence of the mass on the radius is very likely;
2. the value of the limiting radius is most likely equal to (40±10) kpc;
3. the two local velocities are approximately equal to each other, being both equal to (230±30) km s^?1;
4. the local escape velocity appears to be most likely equal to (520±30) km s^?1;
5. the total mass of a corona, obtained in this way, is (5±1)×10¹¹ M _⊙.

     

The chronostratigraphy of the latest Middle Pleistocene aeolian and alluvial activity on the Island of Hvar,eastern Adriatic,Croatia

Pleistocene aeolian sands and alluvial deposits can frequently be traced along the Mediterranean coast. Such deposits also exist along the eastern Adriatic coast and the nearby islands. Four stratigraphical sections of these deposits were studied on the Island of Hvar with the purpose of establishing a chronological framework of the aeolian–alluvial depositional system, using luminescence dating and magnetic susceptibility stratigraphy. Luminescence dating was applied on coarse‐grained feldspar and quartz grains separated from the sands. Both quartz optically stimulated luminescence (OSL) and feldspar post‐IR infrared stimulated luminescence (pIRIR) age estimates are in good agreement, with values ranging between 167±24 to 120±12 ka (OSL) and 179±18 to 131±18 ka (pIRIR measured at 290 °C) after a fading correction for the pIRIR signal. The results can be clearly correlated to around the end of oxygen isotope stage (OIS) 6 and the beginning of OSI 5, indicating that the aeolian accumulation of sands was a result of the Penultimate Glacial and climate fluctuations at the beginning of the Last Interglacial. Variations in magnetic susceptibility (MS) data can be interpreted alongside these dating results; several stronger peaks detected at the very end of the Penultimate Glacial and the initial stage of the Last Interglacial cycle most probably indicates more intensive pedogenesis resulting from a more favourable climate, probably because of climate changes. Breccias related to major bounding surfaces in association with evidence of soil formation and bioturbation could be the result of more favourable climate conditions and changes during the transition from OIS 6 to OIS 5 (Penultimate Glacial–Last Interglacial). These results are in agreement with similar data from the wider Mediterranean area.     

Sequences Characterization of Microsatellite DNA Sequences in Pacific Abalone(Haliotis discus hannai)

1 Introduction Microsatellites or simple sequence repeats (SSRs) are tandemly repeated motifs of one to six bases found in all prokaryotic and eukaryotic genomes analysed to date (Zane et al., 2002). Due to their hyper-variable and co-dominant nature, relatively high abundance and random distribution in the genome, microsatellites are among the most efficient class of molecular markers. Such repeats display high polymorphism because of variation in repeat length and can be rapidly analysed t…     

Stark Broadening Parameters for Neutral Oxygen Spectral Lines

Stark broadening parameters for nine neutral oxygen (O I) lines have been determined within the impact approximation and the semiclassical perturbation method. The atomic data have been taken from the TOPbase and NIST atomic databases. The electron and proton Stark widths and shifts and ion broadening parameter values for these O I lines have been calculated for electron density of 10 ¹⁶ cm ^?3 and for 4 different electron temperatures in the range of 5000 K to 40000 K. These Stark broadening parameters are compared with our previous results (Ben Nessib, N. et al. 1996, Physica Scripta, 54, 603–613), where we calculated Stark broadening parameters for only four O I spectral lines and where Stark widths and shifts were compared with experimental and theoretical data available in the literature. In the present paper, we have also compared our results with the Griem’s book (Griem, H. R. 1974, Spectral line broadening by plasmas) and VALD (Ryabchikova, T. et al. 2015, Physica Scripta, 90, 054005) values.     

Line Shape Variability in a Sample of AGN with Broad Lines

The spectral variability of active galactic nuclei (AGN) is one of the key features that enables us to study in more detail, the structure of AGN emitting regions. Especially, the broad line profiles that vary both in flux and shape, give us invaluable information about the kinematics and geometry of the broad line region (BLR) where these lines are originating from. We give here a comparative review of the line shape variability in a sample of five type 1 AGNs, those with broad emission lines in their spectra, of the data obtained from the international long-term optical monitoring campaign coordinated by the Special Astrophysical Observatory of the Russian Academy of Science. The main aim of this campaign is to study the physics and kinematics of the BLR on a uniform data set, focusing on the problems of the photoionization heating of the BLR and its geometry, where, in this paper, we give for a first time, a comparative analysis of the variabilty of five type 1 AGNs, discussing their complex BLR physics and geometry in the framework of the estimates of the supermassive black hole mass in AGN.     

无居民海岛功能定位初探

根据无居民海岛的自然属性和社会属性,考虑到海岛环境的特殊性、资源承载的有限性、空间开发功能的衍生性,以及与国家主体功能区规划和全国海洋功能区划的衔接性,从海岛开发适宜性和海岛可持续保护的角度,研究无居民海岛功能分类方法,构建海岛功能分类评价指标体系,确定海岛功能分类的适宜性评价因子及评价标准,并引入综合评判理论,量化指标因子,构建综合评判模型,在此模型的基础上,借助GIS技术实现无居民海岛功能定位。     

城市内部居住环境评价的空间分析——以佳木斯市为例

对城市内部居住环境质量进行定量研究是目前城市研究的热点之一。运用GIS、网格计算和空间数据自相关模型结合的方法对佳木斯市进行实证研究。利用ArcMap平台将研究区域划分成若干相同大小元胞(cell),以元胞为单位进行各种统计运算。以居住环境满意度调查问卷数据为基础建立属性数据库,并与元胞建立拓扑关系生成空间—属性一体化数据库,作为评价的基础,分别对居住环境的主要构成因子:利便环境、周边环境、文化环境进行了评价。通过空间自相关模型对评价单元之间的内在联系进行了探索性分析,发现居住环境是在空间分布形态上相应地表现出整体上的趋同性和局部的差异性。并从空间相关联的角度出发,对研究区域提出了空间布局和规划的方案。