Vocal acrobatics in a Chinese frog, <Emphasis Type="Italic">Amolops tormotus</Emphasis>

Although amphibians are highly vocal, they generally emit only a limited number of acoustic communication signals. We report here the extraordinarily rich vocal repertoire of Amolops tormotus, a ranid species in China. These frogs produce countless vocalizations, some of which share features of birdsong or primate calls, e.g., ultrasonic frequency components, multiple upward and downward FM sweeps, and sudden onset and offset of selective harmonic components within a call note. Frame-by-frame video analysis of the frog's calling behavior suggests the presence of two pairs of vocal sacs that may contribute to the remarkable call-note complexity in this species. Electronic supplementary material to this paper can be obtained by using the Springer LINK server located at http://dx.doi.org/10.1007/s00114-002-0335-x.     

脱硫用煤基吸附剂的试验研究

进行了以煤为原料制备脱硫用吸附剂的实验研究，其中应用炭化与活化的方法，以对ＳＯ２吸附能力为衡量标准，系统地考察了样品在制备过程中不同温度，不同温升速率及时间对ＳＯ２吸附分离能力的影响，力求找出相应的最佳处理过程，并对机理进行探讨。     

不同状态MnO2对废水中As(III)的吸附研究

利用MnO2对含As(III)废水进行了吸附实验, 结果表明, MnO2对As(III)有着较强的吸附能力, 其饱和吸附量为44.06mg/g(δ-MnO2)和17.9mg/g(ε-MnO2), 阴离子的存在使MnO2吸附量有所下降, 一些阳离子(如Ga3+、In3+)可增加其吸附量, 吸附后的MnO2经解吸后可重复使用.     

Inventory of emissions from major air pollutant categories in Turkey

In this study, an inventory of air pollutant emission estimates from major air polluting sources in Turkey for period between 1985 and 2005 with 5-year intervals were estimated. Inventory covers anthropogenic sources of five major air pollutants of particulate matter, sulfur dioxide, carbon monoxide, nitrogen oxides and non-methane volatile organic compounds. Their break-down with respect to main activity sectors were shown and their distribution by the largest industrial source categories were worked out as annual estimates. This inventory and its analysis point to serious environmental implications of air pollutants and a need to develop a policy plan for reducing these emissions.     

开发和利用环保科技成果治理环境污染

介绍了大庆石化总厂开发和利用环保科技成果治理环境污染，并提出了该厂今后的环保技术攻关项目。     

蜡染印花生产废水的处理与综合利用

采用物理 、化学方 法，研究 了蜡 染 印花 生 产废 水的 处 理工 艺并 应 用于 废水 治 理工 程中 。实际运行 结果表 明：分流后 的洗蜡 废水经双 级气浮 处理，蜡回 收率和 废水回用 率可达９ ０ ％ 以上； 其他生产废水 经混凝 气浮 内电解 氧化沉 淀组合 工艺 处 理后 ，出 水水 质 达到 了国 家 排放 标准 。该 处理工艺设 备简单 、效果可靠 ，具有推 广使用价 值     

Practical environmental monitoring of major construction projects

Independent teams undertook environmental monitoring of particular concentrations of major construction projects forming part of Hong Kong’s U.S. $20 billion airport infrastructure programme located in dense urban areas. The team combination of environmental specialists with experienced civil engineers enabled pragmatic mitigation measures to be developed and accepted by the construction personnel with the result that potentially significant adverse impacts were averted. The authors discuss the mechanism and success of this innovative approach.     

深化通信专业的产学研合作研究

产学研结合是高职教育改革发展的必由之路。本文从通信专业的发展现状着手，详述了通信专业在校企合作方面所做的努力和取得的成果，并探讨了校企合作今后需努力的方向。     

水环境中痕量有机有害物质的监测

论述了水中有机有害物质的监测,实质上是一项复杂系统的痕量分析课题。重点评述了痕量富集、色谱分离与监测、综合分析的主要进展。     

沧州炼油厂含硫污水汽提技术分析

通过对沧炼酸性水汽提技术的分析，论述了酸性水预处理、汽提工艺过程，提出了在设计和操作过程中应注意的问题和采取的措施。