硝化反应及其控制因素

对硝化菌和亚硝化菌的特性进行了分析，并就碳源不足的废水实行短程硝化—反硝化脱氮的途径进行探讨。     

高等院校教育技术的发展思路探讨

本文阐述了高等院校教育技术的发展现状,分析了高等院校教育技术发展的特点,对高等院校教育技术的发展进行理性思考。认为高等院校应该在重视教育技术实践性和支持性研究的基础上,立足现实,更全面审视机构整合、教育信息化、信息资源库建设和教师培训这些热点问题。     

上海地区二氧化硫浓度和风速的统计关系

应用上海市1986年6月至1987年5月间5个自动监测站的全年每日逐时SO_2浓度平均值和同步的风速平均值资料,按季进行比较、归纳,得到风速—SO_2浓度的诊断判据,并利用1984年全年的相应资料进行验证,准确率达85％;得到了各季浓度—风速的回归方程,和浓度—风速、温差的二元回归方程、复相关系数。     

安徽月山地区成岩-成矿作用关系研究

安徽月山地区的成岩-成矿作用在长江中下游地区具一定的典型性。本文论述了月山地区成岩-成矿的时空关系，探讨了岩浆岩及岩浆演化的成矿作用显示，并从成矿地球化学角度深入研究了闪长质岩浆（岩）对两类铜矿床成矿物质来源的贡献，从而确定了月山地区成岩-成矿作用的内在联系，评价了岩浆岩体的成矿潜力。     

Heavy metals in water bodies purified by suspended substrate of rivers

ＩｎｔｒｏｄｕｃｔｉｏｎＨｅａｖｙｍｅｔａｌｓｉｎｗａｔｅｒｂｏｄｉｅｓａｒｅｓｉｇｎｉｆｉｃａｎｔｌｙｄｉｆｆｅｒｅｎｔｆｒｏｍｏｒｇａｎｉｃｐｏｌｌｕｔａｎｔｓｔｈａｔｃａｎｂｅｍｉｃｒｏｂｉｏｌｏｇｉｃａｌｌｙｄｅｇｒａｄｅｄｏｒｄｅｃｏｍｐｏｓｅｄ .Ｇｅｎｅｒａｌｌｙ ,ｔｈｅｙａｒｅｐｕｒｉｆｉｅｄｔｈｒｏｕｇｈｔｈｅｉｒａｄｓｏｒｐｔｉｏｎｏｎｔｏｓｕｓｐｅｎｄｅｄｓｕｂｓｔｒａｔｅｓｉｎｒｉｖｅｒｓ.Ａｄｓｏｒｐｔｉｏｎｏｆｈｅａｖｙｍｅｔａｌｓｏｎｒｉｖｅｒｓｕｓｐｅｎｄｅｄｓｕｂ…     

Kinetics of continuous biodegradation of pesticide organic wastewater by activated carbon-activated sludge

１ＩｎｔｒｏｄｕｃｔｉｏｎＮｏｖｅｌｂｉｏｌｏｇｉｃａｌａｃｔｉｖａｔｅｄｃａｒｂｏｎａｎｄａｃｔｉｖａｔｅｄｓｌｕｄｇｅｓｙｓｔｅｍｈａｓｓｈｏｗｎｉｔｓｅｆｅｃｔｉｖｅａｂｉｌｉｔｙｔｏｒｅｄｕｃｅＣＯＤｉｎｔｏｘｉｃｏｒｇａｎｉｃｗａｓｔｅｗａ...     

LPWCO method for the treatment of high concentrated organic wastewater

Based on wet air oxidation (WAO) and Fenton reagent, thispaper raises a new low pressure wet catalytic oxidation(LPWCO)which requires low pressure for the treatment of highlyconcentrated and refractory organic wastewater. Compared withgeneral wet air oxidation, the pressure of the treatment(0.1-0.6MPa) is only one of tens to percentage of latter(3.5-10MPa). Inaddition, its temperature is no more than 180℃.Compared withFenton reagent, while H2O2/COD(weight ratio) less than 1.2, theremoval of COD in the treatment is over twenty percents more thanFenton's even the value of COD is more than 14000mg/L. In thispaper, we study the effect factor of COD removal and the mechanismof this treatment. The existence of synergistic effect (catalytic oxidation and carbonization) for COD removal in H2SO4-Fenton reagent system under the condition of applied pressure and heating (0.1-0.6MPa, 104-165℃) was verified. The best condition of this disposal are as follows:H2O2/COD(weight ratio)=0.2-1.0, Fe2+ 0.6×10-3 mol, H2SO4 0.5mol, COD>1×104mg/L, the operating pressure is 0.1-0.6MPa and temperature is 104-165℃. This method suit to dispose the high-concentrated refractory wastewater, especially to the wastewater containing H2SO produced in the manufacture of pesticide, dyestuff and petrochemical works.     

区域环评中废水排放量的预测方法研究

阐述了区域环评污染物排放源强的预测原则,对区域开发活动中废水量和COD排放量的预测方法作了详细论述,并以温州滨海新区环评为例作了实证研究.     

The modern theory of biological evolution: an expanded synthesis

In 1858, two naturalists, Charles Darwin and Alfred Russel Wallace, independently proposed natural selection as the basic mechanism responsible for the origin of new phenotypic variants and, ultimately, new species. A large body of evidence for this hypothesis was published in Darwins Origin of Species one year later, the appearance of which provoked other leading scientists like August Weismann to adopt and amplify Darwins perspective. Weismanns neo-Darwinian theory of evolution was further elaborated, most notably in a series of books by Theodosius Dobzhansky, Ernst Mayr, Julian Huxley and others. In this article we first summarize the history of life on Earth and provide recent evidence demonstrating that Darwins dilemma (the apparent missing Precambrian record of life) has been resolved. Next, the historical development and structure of the modern synthesis is described within the context of the following topics: paleobiology and rates of evolution, mass extinctions and species selection, macroevolution and punctuated equilibrium, sexual reproduction and recombination, sexual selection and altruism, endosymbiosis and eukaryotic cell evolution, evolutionary developmental biology, phenotypic plasticity, epigenetic inheritance and molecular evolution, experimental bacterial evolution, and computer simulations (in silico evolution of digital organisms). In addition, we discuss the expansion of the modern synthesis, embracing all branches of scientific disciplines. It is concluded that the basic tenets of the synthetic theory have survived, but in modified form. These sub-theories require continued elaboration, particularly in light of molecular biology, to answer open-ended questions concerning the mechanisms of evolution in all five kingdoms of life.Dedicated to Prof. Dr. Dr. hc mult. Ernst Mayr on the occasion of his 100th birthdayThis revised version was published online in March 2004, with corrections to the caption of Figure 6.     

Optimization of C/N ratio for preparation of protein-rich and multi-enzymes feed thallus through synergic fermentation of mixed distillers'grains

A new procedure of determining optimal C/N (the rate of carbon source to nitrogen source) of mixed distillers' grains for combined bacteria synergic fermentation is established. At the same time an improved method evaluating bacteria growth, called method of dry cell weighing by filtering is developed. For each combination of C and N , their initial and residual contents before and after fermentation respectively are determined. Then followed the calculation of utilization of C and N sources by the compound bacteria. The optimal C/N is finally located from among the utilization of C and N of several combinations and the weight of produced mass of oven-dried thallus The conditions of fermentation are: inoculum size 10%, temperature 30.0℃, rotational speed 170 r/min, shake culture time 48h. The best results obtained from orthogonal experiments are: maximum mass of oven dried thallus is 14.693g in a liter liquid medium, maximum utilization rate of carbon source is 98.13% and maximum utilization rate of nitrogen is 78.14%. Optimal C/N is 5.1.