Choice of conodont Idiognathodus simulator （sensu stricto） as the event marker for the base of the global Gzhelian Stage （Upper Pennsylvanian Series,Carboniferous System）

We propose that the level at which the conodont species Idiognathodus simulator （Ellison 1941） （sensu stricto） first appears be selected to mark the base of the Gzhelian Stage, because we believe that this is the optimal level by which this boundary can be correlated. This taxon has a short range and a wide distribution, as shown by correlation of glacial-eustatic cyclothems across the Kasimovian-Gzhelian boundary interval among Midcontinent North America and the Moscow and Donets basins of eastern Europe, based on scale of the cyclothems along with several aspects of biostrati- graphy. Outside of these areas, I. simulator （sensu stricto） is known also from other parts of the U.S., and is reported from the southern Urals and south-central China in its expected position between other widespread taxa. Its first appearance is consistent with the current ammonoid placement of the boundary （first appearance of Shumardites cuyleri）, and it is also compatible with certain aspects of the distribution of Eurasian fusulinid faunas （e.g., lectotype ofRauserites rossicus）.     

Asteroseismology and Oblique Pulsator Model of beta Cephei

The evolution of halos consisting of weakly self-interacting dark matter particles is investigated using a new numerical Monte Carlo N-body method. The halos initially contain kinematically cold, dense r-1 power-law cores. For interaction cross sections sigma*=sigmawsi&solm0;mp>/=10-100 cm2 g-1, weak self-interaction leads to the formation of isothermal, constant-density cores within a Hubble time as a result of heat transfer into the cold inner regions. This core structure is in good agreement with the observations of dark matter rotation curves in dwarf galaxies. The isothermal core radii and core densities are a function of the halo scale radii and scale masses which depend on the cosmological model. Adopting the currently popular LambdaCDM model, the predicted core radii and core densities are in good agreement with the observations. For large interaction cross sections, massive dark halos with scale radii rs>/=1.4x104 cm2 g-1 (sigma*)-1 kpc could experience core collapse during their lifetime, leading to cores with singular isothermal density profiles.     

Laboratory detection of a new interstellar free radical CH2CN(2B1)

An asymmetric-top free radical CH2CN, which as a 2B1 ground state, was detected for the first time by laboratory microwave spectroscopy. The radical was produced in a free-space absorption cell by a DC glow discharge in pure CH3CN gas. About 60 fine-structure components were observed for the N = 11-10 to 14-13 a-type rotational transitions in the frequency region of 220-260 GHz, and many hyperfine resolved components for the N = 4-3 and 5-4 transitions in the 80 and 100 GHz regions, respectively. The molecular constants, including the rotational constants, centrifugal distortion constants, and spin-rotation coupling constants with centrifugal distortion correction terms were determined from the fine-structure resolved transitions, and the hyperfine coupling constants due to the hydrogen and nitrogen nuclei were obtained from the low-N transitions. As a result we assigned U100602 and U80484 from Sgr B2, and U40240 and U20120 from TMC-1, to the N = 5-4, 4-3, 2-1, and 1-0 transitions with K-1 = 0 of the CH2CN radical.     

密云综合孔径射电望远镜的干扰抑制(英文)

MSRT(密云综合孔径望远镜)从1985年起投入工作。在多年的观测中经常发现来自外部的强大干扰,严重影响着成图的质量。为了抑制观测过程中出现的各类干扰,我们发展了两种软件技术——剔除法和频域滤波法。滤波法的优点在于保留了全部观测信息,适合于长时间强干扰的情形。剔除法对脉冲形的干扰更为敏感有效。这两种技术的配合使用能有效、灵活地抑制各种不同干扰的影响。     

Performance comparison of two biotic indices measuring the ecological status of water bodies in the Southern Baltic and Gulf of Lions

Two biotic indices, ATZI Marine Biotic Index (AMBI) and Benthic Quality Index (BQI) have been recently introduced within the EC Water Framework Directive to assess the quality of marine habitats: both are based on sensitivity/tolerance classification and quantitative information on the composition of soft-bottom macrofauna. Their performance, especially with regard to sampling effort was assessed based on two data sets collected in Southern Baltic and one from the Gulf of Lions Mediterranean. AMBI was not affected by sampling effort but BQI was. Two modifications were proposed for BQI (i.e., BQI) (1) the removal of the scaling term (i.e., BQI(W)), and (2) the replacement of the scaling term by different scaling term (i.e., BQI(ES)). Both modified BQIs were largely independent of sampling effort. Variability was slightly lower for BQI(W) than for BQI(ES). BQI was highly correlated with BQI(W) and with BQI(ES) both in the Southern Baltic and in the Gulf of Lions. However, the proportions of stations, which were not attributed the same ecological quality status (EcoQ) when using BQI and its two modified forms were always high. Differences in ecological classification were mostly due to the scales used to infer EcoQ. Based on this study we recommend to use BQI(ES) in future studies because it apparently constitutes the best compromise in (1) being independent of sampling effort, (2) limiting the variability in computation in relation with sampling effort, (3) being correlated with BQI and corresponding EcoQ.     

浅谈我国高新技术产业开发区

今年高考地理最后一题是以高新技术开发区为内容设计的。试题灵活又不超纲，但由于学生对高新技术开发区知识了解甚少，致使部分同学做题遇到相当大的困难。下面就简单介绍一下我国高新技术产业开发区的情况．     

江苏省天福国家湿地公园自然教育实践

通过现场调查、资料收集等方法,开展江苏省天福国家湿地公园自然教育模式研究。天福国家湿地公园自然教育体系构建框架为“创建天福湿地自然学校—制定自然学校发展策略—设计自然教育方案”,设计了一套“4个主题5个类型”的自然教育课程。该套课程的有效实施是天福湿地科普宣教工作的重要成果,也是其发挥湿地生态系统服务功能的重要体现,展示了我国高水平的自然教育形式和内容,将为全国各地自然教育活动的开展起到示范作用。     

绿洲经济不发达的成因分析与战略思考——以新疆为例

干旱区在世界和我国都占有较大面积,绿洲作为干旱区经济活动的主阵地,绿洲经济的发展对世界和我国都具有重要作用。通过对我国新疆绿洲经济特性的研究,深入分析了绿洲经济不发达的形成机制,指出绿洲的孤立、封闭更有甚于水资源不足对其经济发展的影响,要加强绿洲与外界的经济联系、区域组织管理和现代绿洲经济体系的建立。在此基础上,提出了环境与经济要协调发展、发展目标和措施要与绿洲自身状况相适应、培养内生机制、建立绿洲高科技工业园等战略框架。     

沁县林业生态经济总体规划设计研究及实施

土地利用弊端导致生态环境恶化，自然灾害频繁，经济贫困落后，群众生活低下，这就决定了“生态经济工程”建设的必要性和紧迫性。“生态经济工程”建设的新思路就是合理的调整土地利用结构，种植结构，产业和产品结构；合理利用自然资源（光、热、水）土地资源，通过综合治理的途径，兴办绿色产业，实现生态，经济和社会效益的统一。