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To prevent epidemical disease prevalence caused by microorganisms in indoor air, a study was carried out to investigate the effect of ventilation, peracetic acid and ozonization on microorganisms reduction in the indoor air within a campus. The experimental results indicated that ventilation was an effective measure in reducing indoor air microorganisms with economy and simple operation.

为了防止室内空气微生物导致的传染病发生,对某校园室内的空气进行通风、过氧乙酸和臭氧灭菌降低微生物的实验研究结果表明,通风可以有效地降低室内微生物的浓度,是最为经济和易行的措施;过氧乙酸灭菌效果好,持续时间较长,可在不易实施通风情况下采用过氧乙酸灭菌;臭氧具有迅速杀菌的效果,使用时要与人保持一定距离,最好超出 1m。

According to the mechanism of ozonization oxidation, with varied molar ratio of H2O2 to O3 and the catalyst dosage added into the wastewater, the change of the removal rates of COD, chroma and UV254 of the dyeing wastewater by ozonization were researched in a batch reactor.

依据臭氧高级氧化的机理,通过静态试验,分别考察了在印染厂二级废水臭氧氧化处理过程中,控制不同的H2O2和O3物质的量的比和MnO-GAC催化剂投加量对印染废水的COD、色度和UV254去除率的影响。

The STE dominated by the intrusion of stratospheric air has been testified as a cause of ozone enhancement in upper troposphere over East Asia at the end of March 2001. This STE relates to the surface high moving southward, the upper cold eddy deepening and drifting eastward, the convergence of Subtropical Jet and Polar Front Jet associated with the cold front, the increasing temperature gradient near the jets, and the enhancing baroclinic instability.

天气诊断和动力分析表明,2001年3月底东亚地区几个臭氧探空测站探测到的对流层上层臭氧增加是以平流层空气下传为主的STE过程导致的,此过程与地面冷高压南下、高空冷涡加深东移的天气过程、以及冷锋推进引起的副热带急流和极锋急流的移动和汇合、急流附近的温度梯度加大、斜压不稳定增强等动力因素密切相关。

Precise knowledge of the temporal and spatial structure of the tropopause is necessary in order to evaluate the exchange of mass, water, and chemical constitutes between the troposphere and the stratosphere.

为了评估对流层和平流层之间的质量、水汽和化学成份的交换在全球气候和环境变化中的重要作用,研究对流层顶的时空分布结构及这种变化对于该区域臭氧和其它微量成份变化的作用,以及对大气臭氧总量的影响是一个有重要意义的问题。

The first one is that the diene structure in Adda side chain was attacked and cleaved, which was named as Adda degradation pathway. The second one is that the pathway of Mdha and Ala degradation, which was that the peptide bond between Mdha and Ala was attacked and cleaved. Adda degradation pathway was dominant and mainly responsible for the degradation of MC-LR by ozone.

臭氧氧化的Adda途径是通过对MC-LR上Adda侧链的进攻,断开具有活性的Adda支链,而达到脱毒的目的;臭氧氧化的Mdha途径是通过对MCs肽环上面Mdha和Ala的断键,打开环状肽链,使藻毒素失去活性,在整个过程中Adda途径占主导地位。

The optimum conditions were obtained as follows: the weight ratio of fatty acids and 85%acetic acid is 1:4, ozonolysis temperature is 20-25℃, manganese/copper acetate as catalyst, and the amount of catalyst is 0.15% of fatty acids, oxidation decomposition temperature and oxidation decomposition time are 90-95℃ and 4 hours respectively. the yields of azelaic acid and pelargonic acid are 57.4% and 51.6% respectively.

以菜油酸为原料、85%醋酸水溶液为溶剂,经臭氧化、氧化分解、重结晶等过程制备壬二酸和十三烷二酸的最佳反应条件为:m:m(85%醋酸)=1:4,臭氧化温度20-25℃;氧化分解温度80-85℃,催化剂醋酸锰/醋酸铜用量为原料菜油酸质量的0.12%,氧化分解时间3h,重结晶溶剂壬酸的用量为5倍质量的氧化分解产物时,十三烷二酸的收率为58.3%,壬二酸的收率为57.2%。

Common transparent quartz tube SiO2 more than 99.9% purity, geometry, chemical stability, thermal stability, resistance to thermal denaturation and anti-crystallization properties of the fine, optical transmittance above 93%; from hydroxyl in hydroxyl tube below 10ppm, after vacuum from hydroxyl, hydroxy-up to 5ppm below apply to high-pressure mercury lamp, sodium lamp, metal halide lamp, such as low-hydroxy products; white pipe, used mainly for heating tube, heating tube, far infrared control the manufacture, milky quartz pearl quartz tube possession of new technology, the management side as if the surface of pearls, all aspects of performance than ordinary white tube better; filter tube to filter out ultraviolet UV band in the harmful wavelengths of 190-320nm ultraviolet light source applied to environmental protection manufacturing; no ozone UV filter tube and pipe the contrary, through the ultraviolet wavelength around 253.7nm, there is no ozone UV lamp main material, widely used in medical equipment, water treatment, food hygiene, such as sterilization; quartz casing diameter 8-120mm in between, has a single opening, double opening round, flat-top shape and widen the mouth of necking, flanging, sanding and other processing, high temperature resistance, corrosion resistance, good light transmission and moisture-proof, explosion-proof characteristics such as widely used in aquarium thermostat, disinfection equipment, heating pipes, water treatment, metal halide lamp, such as product manufacturing and environmental protection, health, chemical and other fields; quartz Clamshell specifications 8-180mm, the shape according to the customer requirements, the bubble shell can take capillary has to carry out the exhaust, high temperature, light transmission is good, mainly for JC, JD, H1-H7, the stage lights and high-pressure mercury lamp, sodium lamp, metal halide lamp, such as product manufacturing; quartz water jacket mainly used in printing and packaging processing industry ---- UV light-curing, UV light curing is a very reliable and can be used to replace hot air dryers and other drying technique of curing technology, which in the printing and packaging of the processing industry has been widely.

普通透明石英管SiO2纯度达99.9%以上,几何尺寸、化学稳定性、热稳定性、抗热变性和抗析晶性能优良,光学透过率达93%以上;脱羟管羟基在10ppm以下,经过真空脱羟,羟基可达5ppm以下,适用于高压汞灯、钠灯、金卤灯等低羟基产品;乳白管,主要用于发热管、加热管、远红外管的制造,珠光石英管乳白石英管之新工艺,管面好象珍珠的表面,各方面性能比普通乳白管更优;滤紫外线管能够滤除紫外光谱波段中对人体有害的190-320nm波长的紫外线,适用于环保光源的制造;无臭氧管与滤紫外线管相反,可透过253.7nm左右波长的紫外线,是无臭氧紫外线杀菌灯的主要材料,广泛用于医疗器械、水处理、食品卫生等杀菌;石英套管直径范围在8-120mm之间,有单开口、双开口、圆头、平头等外形和扩口、缩口、翻边、磨砂等加工,具有耐高温、耐腐蚀、透光性好及防潮、防爆等特点,广泛使用于水族恒温器、消毒设备、加热管、水处理、金卤灯等产品的制造和环保、卫生、化工等领域;石英泡壳规格Φ8-180mm,形状根据客户要求,泡壳上可以接有毛细管,可进行排气,耐高温,透光性好,主要用于JC、JD、H1-H7、舞台灯和高压汞灯、钠灯、金卤灯等产品的制造;石英水套主要用于印刷和包装加工工业---- UV光固化, UV光固化是一种十分可靠的、可取代热空气干燥机和其他干燥技术的固化技术,它在印刷和包装加工工业已经得到广泛应用。

Against the load characteristic of DBD ozone generator, this paper is to design a kind of inverter working at kilowatts level to meet above needs.

本文研究的目的在于针对DBD型臭氧发生器的负载特性的,设计一种数千瓦级功率的高频高压逆变电源以满足臭氧发生器这类装置的需要。

Unique stricture of water pocket keeps the pressure of ozone before entering water jet self-adjusting the pressure of water before small hole,and comes to the lowest power driving ozone.

独特的水囊柱塞结构实现了臭氧进入水射器之前的压力和水射器节流孔前水的压力自适应,保证输送臭氧消耗的功率最小。

For ozonolysis, the SOA yield has not been changed by inorganic seed aerosol, because the products are mainly carboxylic acids, which has much lower saturation vapor pressure and thus easily undergo homogeneous nucleation or gas-particle partitioning to be in the aerosol phase.

而对于α-蒎烯臭氧氧化的过程,实验结果表明,干态硫酸铵颗粒物种子的存在对SOA产率无影响,对臭氧氧化生成的SOA分子鉴别的结果表明,可鉴别组分中有很高比例的有机羧酸类物质,这一比例远高于光氧化产物,这些有机酸具有较低的挥发性而极易形成颗粒相,并且不参与异相酸催化反应。

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But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊!不用提了。提到肉,真是糟透了。

Tristan, I have nowhere to send this letter and no reason to believe you wish to receive it.

Tristan ,我不知道把这信寄到哪里,也不知道你是否想收到它。