DAS24-3B数据采集系统控制系统软件的研制与开发

Under the auspices of the 'knowledge-Innovation Program' of CAS, Institute of Geology and Geophysics has established the Broadband Seismic Laboratory. A new kind of 24-bit high-resolution seismograph DAS24-3B has been designed and manufactured in an effort of developing China's own technology of seismic array. Since these instruments will primarily be used in field operation, there is a need to optimize the system software of data acquisition system (DAS) to enhance its stability, compatibility and maintenance. The design ideas of the system software of DAS24-3B are partly learned from the advanced DAS 72A-08. In this system there are two exclusive communication programs DNAPI-COM1 and DNAPI-LPT1, which are suitable for all standard industrial computers with ECP parallel port and serial port. By these exclusive parallel and serial communication interface the system software is split into three parts, acquisition program, user's control program and graphical display program, which can function well in separate units and can run correctly in whole. The three parts of DAS24-3B's system software possess different functions and advantages. The function of acquisition program is to control the process of seismic data acquisition. DAS24-3B system reduced its power and harddisk read-write disturbance by using the extended memory attached to its CPU, which functions as enlarging the data buffer of system and lessening the times of harddisk read-write operations. Since GPS receiver of DAS is strongly sensitive to the around environment and has the possibility of signal loss the acquisition program has been designed with the ability to automatically trail the GPS locked time. The function of user's controlling program is to configure the system's work environment, to inform the user's commands to DAS, to trail the status of DAS in real-time. The function of graphical display program is to illustrate data in figures, to convert data file into some common formatted file, to split data file in parts and combine data files into one. Both user's control program and graphical display program are API (Application Programming Interface) in window 95/98 system. Both possess the features of clearness and friendship by use of all kind of window controls, which are composed by menu, toolbar, statusbar, dialogue box, message box, edit box, scrollbar, time control, button and so on. Two programs of systemic exception handles are provided to treat the trouble in field. The DAS24-3B DAS has been designed to be easier to use-better ability, more stable and simpler. It has been tested in field and base station and has been proved more suitable for field operation of seismic array than other native instruments.

湖南芙蓉锡矿田流体包裹体的He同位素组成及成矿流体来源示踪

芙蓉锡矿田位于湖南省骑田岭花岗岩体的南部，是一个新近发现的超大型锡矿田．与以往所研究的与S型花岗岩有关的锡矿床明显不同，这个矿田在时空上都与骑田岭A型花岗岩密切相关．该矿田矿石硫化物流体包裹体的^3He／^4He测定值为0．14～2．95Ra，低于地幔的^3He／^4He值（6～7Ra），且高于地壳的^3He／^4He值（0．01～0．05Ra）．这表明芙蓉锡矿田成矿流体中的He具壳幔两端元混合的特点．该区一致的硫、锶及其他证据也都表明，深部地幔物质确实参与了该区锡的成矿．骑田岭岩体属造山期后张性环境下形成的A型花岗岩类．芙蓉锡矿田就产在骑田岭岩体的内外接触带或岩体中，其主成矿期与骑田岭岩体的形成时间相当吻合，且两者均具壳幔两端元混合成因的特征，所以其形成地球动力学背景可能均与中生代华南岩石圈的拉张、伸展作用密切相关．

郯庐断裂带温泉和天然气的He、Ar同位素组成特征及其构造活动

郯庐断裂带是中国东部一条长期发展起来的，至今仍在活动的巨型超壳深断裂。其本身所具有的重要地质意义，一直吸引着重多的地质工作者。本文就是从稀有气体方面对郯庐断裂带的构造特征做一个探索性的研究。沿郯庐断裂带的温泉及天然气，其R/Ra(R =(~3He/~4He)样，Ra为空气样值）大于1，最高达5 ～ 6，显示了He的部分地幔来源。Ar同位素也有类似特征，除去时间效应，天然气的~(40)Ar/~(36)Ar过剩，同样批示Ar的部分地幔来源。这都表明了郯庐断裂带是一条超亮深断裂，如此才能使得沿带的温泉及天然气的Ha、Ar含有幔源成分。对比带外的温泉及天然气的He、Ar同位素，均体现大气与地壳来源。天然气样所在储集层的年代从志留系（S）到晚第三纪（N），均显示了He、Ar的地幔来源。可以推知，郯庐断裂带具有长期的活动性，是长期发展起来的。温泉是现代地质活动的一种表征，其R/Ra值最高达4.41，显示了He的地幔来源，表明郯庐断裂带在现代仍具有活动性。

Ozonation of the purified hydrolyzed azo dye Reactive Red 120 (CI)

The combination of chemical and biological water treatment processes is a promising technique to reduce recalcitrant wastewater loads. The key to the efficiency of such a system is a better understanding of the mechanisms involved during the degradation processes. Ozonation has been applied to many fields in water and wastewater treatment. Especially for effluents of textile finishing industry ozonation can achieve high color removal, enhance biodegradability, destroy phenols and reduce the COD. However, little is known about the reaction intermediates and products formed during ozonation. This work focuses on the oxidative degradation of purified (>90%), hydrolyzed Reactive Red 120 (Color Index), a widely used azo dye in the textile finishing processes with two monochlorotriazine anchor groups. Ozonation of the dye in ultra pure water was performed in a laboratory scale cylindrical batch reactor. Decolorization, determined by measuring the light absorbance at the maximum wavelength in the visible range (53 5 nm), was almost complete after 150 min with an ozone concentration of 12.8 mg/l. The TOC/TOC0 ratio was about 74% and the COD was diminished to 46% of the initial value. The BOD5/COD ratio increased from 0.01 to 0.14. To obtain detailed information on the reaction processes during ozonation and the resulting oxidation products organic and inorganic anions were analyzed. Oxidation and cleavage of the azo group yielded nitrate. Cleavage of the sulfonic acid groups of aromatic rings caused an increase in the amount of sulfate. Formic acid and oxalic acid were identified as main oxidation products by high performance ion chromatography (HPIC). The concentrations of these major products were monitored at defined time intervals during ozonation.