查询词典 Cyclotella

The removing rates on Scenedesmus dimorphus,Microsystis flos-aquae,Synedra acus and Cyclotella meneghiniana are 100.0%,52.1%,60.5%and 73.3%when the algae exposed in the disinfect agent with 62.5ppm available chlorine for 48h,respectively.

采用钠法工艺生产的次氯酸钙是一种无残毒、不产生二次污染的高效广谱灭菌药物。对该药物的杀藻效率进行生物测试的结果表明，它能有效地杀灭引发水华的绿藻、蓝藻和硅藻。

The phytoplankton community was mainly composed of Cyanophyceae, Euglenophyceae, Bacillariophyceae, and Chlorophyceae, and the dominant species were Oscillatoria subtillissima, Dactylococcopsis irregularis, Euglena caudata, Melosira granulata, Cyclotella meneghiniana, Chlorella vulgaris, and Scenedesmus quadricauda. The main environmental factors affecting the distribution of phytoplankton species in July were ammonium-nitrogen, dissolved oxygen, water temperature, and total phosphorus, while those in September were pH, water temperature, dissolved oxygen, transparency, and total nitrogen. Water transparency and zooplankton were the main factors affecting the biomass of Cryptophyceae, Pyrrophyceae, and Bacillariophyceae; while nitrogen, phosphorous, and dissolved oxygen were the main factors affecting the biomass of Cyanophyceae, Euglenophyceae, and Chlorophyceae.

结果表明：调查期间共鉴定出浮游植物384种，隶属于8门，浮游植物密度范围为2.01×105～57.60×105 cells·L-1；群落组成以蓝藻、裸藻、硅藻和绿藻为主，主要优势种有细微颤藻、无常蓝纤维藻、尾裸藻、颗粒直链藻、梅尼小环藻、普通小球藻、四尾栅藻等；7月影响浮游植物分布的主要环境因子依次为铵态氮、溶解氧、水温和总磷，而9月的pH值、水温、溶解氧、透明度和总氮含量对浮游植物的分布产生影响较大；其中，透明度和浮游动物量是影响隐藻、甲藻和硅藻藻类生物量的主要环境因子，而蓝藻、裸藻、绿藻主要受水体氮磷营养盐浓度和溶解氧的影响。

Based on data collected at four stations in Daning River in the spring of 2004 and 2005, phytoplankton community structure, vertical distribution, abundance, biomass, C contents, diversity index, richness index and evenness index were studied. The causes of eutrophication and water blooms in Daning River were analysed and control measures were then put forward. The dominant species were Asterionella Formosa, Cryptomonas ovata, Cyclotella caspia, Stephanodiscus neoastraea in the spring of 2004 and those were Pandorina morum, Eudorina elegans, Cyclotella caspia, Cryptomonas ovata in the spring of 2005. Average cell densities, biomass, C contents in the spring of 2004 and 2005 were 171.1×10^5 cells/L, 12.2 mg/L, 1732.2g C/L and 113.1×10^5 cells/L, 10.1 mg/L, 1395.9g C/L, respectively.

报道了大宁河2004年春季和2005年春季浮游藻类的种类组成、垂直分布、数量、生物量以及C含量的调查结果，并应用多样性指数、丰富度指数和均匀性指数对其水质进行了综合评价；对大宁河蓄水后出现的富营养化现象和春季发生&水华&的原因进行了探讨，同时提出了控制水体富营养化的建议。2004年春季，藻类优势种为美丽星杆藻、卵形隐藻、里海小环藻和新星形冠盘藻；2005年春季的优势种为实球藻、空球藻、里海小环藻和卵形隐藻。2004年和2005年的细胞密度、生物量和C含量分别平均为171.1×10^5 cells/L，12.2 mg/L，1732.2g C/L和113.1×10^5 cells/L，10.1 mg/L，

Among the phytoplankton, the main are middle-nutrition designate kinds, such as Ceratium, Fragilaria, Cyclotella and Cosmarium. There are some eutrophicational designate kinds, such as Scenedesmus, Chlorella, Microcystis and Synedra.

在观察到的浮游藻类中，中营养型指示种占优势，如角甲藻、脆杆藻、鼓藻等，但也出现了一些富营养型指示种，如栅藻、小球藻、微囊藻、针杆藻等。

It was found that the rapid proliferation of diatom (with density of more than 107/L), mainly the cyclotella meneghiniana, is the basic characteristic as well as the direct cause of the 'water bloom'.

结果表明，其直接原因是以小环藻为主的硅藻的急剧增殖(硅藻密度达107个/L以上)造成的。

Relation between the composition of photosynthesis pigment and the three dimensional fluorescence spectrum characteristic of each spectral group was analyzed. Selecting pure cultures of cyclotella meneghiniana, chlorella vulgaris and...

组分1、组分2和组分3在模1上得分与其在混合样品中的实际相对浓度具有良好的线性关系，相关系数分别达到0.98222，0.97865和0.99788，证实了利用三维荧光光谱和PARAFAC模型分类测量浮游植物浓度的可行性。

Aeruginosa and S. quadricauda in HAC were lager than in HA without reference to pure or mixed culter. It indicated that the growth of M. aeruginosa and S. quadricauda need HCO3(superscript -) as carbon source to balance its C:N:P ratio. Cyclotella sp. could not survive in HAC. M. aeruginosa and S.

铜绿微囊藻与四尾栅藻在HAC中纯培养和共培养的生物量K和最大增长速率r均远大于在HA中，表明这两种藻的增殖需要HCO3作为碳源平衡胞内营养平衡；小环藻不能在有HCO3的培养基中生存。

In dry January, November and December, species of Bacillariophyta were dominated by Achnanthes sp., Melosira ambigua, Melosira granulata and Cyclotella meneghiniana.

浮游植物群落是水生态系统的重要组成部分，浮游植物种类组成与丰度的季节变化是浮游植物群落动态的重要特征。

Microcystis aeruginosa, Scenedesmus quadricauda and Cyclotella sp. were examined in HAC which included HCO3(superscript -) in culture medium and in HA without HCO3(superscript -) in this artical.

文章采用含HCO3培养基HAC与无HCO3培养基HA对铜绿微囊藻、四尾栅藻和小环藻Cyclotella sp。

The predominant genera in most sampling sites were Fragilaria, Navicula, Cymbella and Gomphonema, but the dominant Cyclotella only in the Long Lake.

脆杆藻属、舟形藻属、桥弯藻属和异极藻属常为优势属，只在长海是以小环藻属为单一优势属的群落。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失