安徽省地理分布新记录植物

本文首次报道了刻鳞苔草和美丽苔草为中国地理分布新记录;裂瓜属,竹叶子属,沼兰属为安徽省新分布属;红果类叶升麻,直穗小蘖等34种(包括变种)为安徽省地理分布新记录植物。     

风力机塔架结构风振试验的模化方法(英文)

本文讨论了风力机塔架相似模型的建立,并把强风瞬时风速记录变换为符合相似条件的风模型。采用激振器对塔架模型做模拟风激振试验以及在静风荷载作用下塔架模型的光弹实验。完成上述工作,即构成了完整的风致振动的模化实验方法。     

Carbon isotopic record of foraminifers in surface sediments from the South China Sea and its significance

Since the 1990s, the papers and data involved withthe South China Sea (SCS) have been emerging in largenumbers in the world as people pay more attention to thepaleoceanography of the SCS. There have been more than100 cores mentioned in papers containing p…     

The terrestrial NPP simulations in China since Last Glacial Maximum

Based on Atmosphere-Vegetation Interaction Model （AVIM）, the magnitude and spatial distribution of terrestrial net primary productivity （NPP） in China is simulated during three different geological eras, Last Glacial Maximum （LGM）, Mid-Holocene （MH） and the present. The simulation shows that the glacial-interglacial variation of East Asian summer monsoon in China is the key factor affectfng the NPP change. During the three eras, mean NPPs are 208 g/m^2·a, 409 g/m^2·a, and 355 g/m^2·a. The total NPPs are 2.05 Pg/a, 3.89 Pg/a and 3.33 Pg/a, respectively. The terrestrial NPP in China during warm-humid climate is larger than that during cold-arid eras, and the correlation analysis between NPP and climate factors suggests that temperature is the primary factor affecting the terrestrial NPP during 21 kaBP （LGM）, and for 6 kaBP （MH） and the present the primary factor is precipitation.     

Pollen records and time scale for the RM core of the Zoige Basin, northeastern QinghaiTibetan Plateau

A continuous pollen record from the Zoige Basin in the northeastern Qinghai-Tibetan Plateau not only provides information on the vegetation and climate changes during the last two glacial/interglacial cycles, hut also gives proof to establish the time scale of the upper 60 m of the RM core. Subalpine spruce-fir forests colonized the Zoige Basin during the interglacials and interstadials, implying warm and wet climate conditions. Alpine periglacial desert or dry desert may have existed during the penultimate glacial and the last glacial maxima, respectively. Alpine sedge meadow dominated the landscape during MIS 4. The MIS 3 is punctuated by a number of stadials similar to those documented in the Guliya and GISP2 ice cores, as indicated by repeated rise and fall of subalpine spruce-fir forests. Our pollen record reveals a regional climate history similar to those from the neighboring sites, including the Arabian Sea and the Guliya ice core, and thus supports the notion that the Qinghai-Tibetan Plateau acts as an important link between climatic events in the North Atlantic realm and the Asian monsoon domain.     

基于风压线形叠加法张拉膜结构风荷载与风振响应分析

综合分析了几种现有的张拉膜结构风荷载分析的方法,在此基础上提出了用风压线形叠加法进行风荷载计算的新方法,并給出一个工程算例进行了风振响应分析。该方法采用平均风压与脉动风压线性组合叠加的办法,生成风压时程函数,既保证了作用于结构上的风荷载随时间变化,而且还能保证结构所受的力是围绕着静力风压上下波动。这种算法可为膜结构的抗风设计提供参考。     

基于小波变换的高空风估计

随着雷达技术的快速发展及对探测要求的逐步提高，用常规方法计算层风将造成信息的浪费，且结果也不能真正代表所测层的风速，在分析了高空探测常规计算层风不足之处的基础上，提出了采用小波变换计算层风的新方法，通过计算机仿真及实际数据的对比分析。证实了所提方法的有效性和可靠性。     

热害矿井主要巷道断面和支护的合理形式

本文根据推导出来的巷道末端风温计算公式,找出影响巷道末端风温的主要因素.进而提出热害矿井主要巷道的合理断面形式和永久支护形式.同时得出结论,热害矿井主要巷道采用喷射混凝土作为永久支护是不合理的.     

仪表风干燥器的PLC控制系统

本文介绍了可编程控制器（PLC）在仪表风干燥器控制系统中的应用，并给出了PLC控制的软、硬件系统设计，实践证明该控制系统先进可行并具有实用价值。     

网路分风的疑点之一——分风优化的准则

本文探讨了分风优化的前提,基本思想,及应遵循的原则。它充实和完善了通风网路的优化理论。