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microbial community     
相关语句
  微生物群落
     Application of DGGE/TGGE System in Study of Microbial Community in Soil
     DGGE/TGGE方法在土壤微生物群落研究中的应用
短句来源
     Terminal restriction fragment length polymorphism (T-RFLP) analysis is a culturing-independent approach for analyzing microbial community in environments.
     末端限制性酶切片段长度多态性分析(terminal restriction fragment length polymorphism, T-RFLP)是近年来发展起来的、不依赖于培养的微生物群落分析方法之一.
短句来源
     16S rRNA genes comparative analysis of microbial community in nutrientinjected oil reservoir by the T-RFLP method
     营养注入后油藏微生物群落16S rRNA基因的T-RFLP对比分析
短句来源
     Analysis on Microbial Community Structures in O_3-BAC Process
     O_3—BAC工艺的微生物群落结构解析
短句来源
     T-RFLP technique and its application in research on microbial community structure
     T-RFLP技术及其在微生物群落结构研究中的应用
短句来源
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  微型生物群落
     Study of Organic Chloride Pollutants in Natural Water Body by PFU Microbial Community
     PFU微型生物群落法研究天然水体中有机氯污染物
短句来源
     It was discovered that there are high correlations between aquatic microbial community parameters (such as S eq , G,T 90% and HI) and the indicators of water quality (such as TLI c).
     试验结果表明水体微型生物群落参数 (如Seq,G ,T90 % 和HI)和水质指标 (如TLIc)之间具有良好的相关性
短句来源
     Study on Succession of Microbial Community during Ecological Restoration under Experimental Condition
     实验条件下生态修复过程中微型生物群落演替研究
短句来源
     THE STUDY ON JOINT TOXICITY OF COPPER,LEAD AND ARSENIC BY RAPID PFU MICROBIAL COMMUNITY TOXICITY TEST METHOD
     快速PFU微型生物群落毒性试验法对铜、铅、砷联合毒性的研究
短句来源
     Study on the Correlation between Aquatic Microbial Community Parameters and the Indicators of Water Quality
     水体微型生物群落参数与水质指标相关性的研究
短句来源
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  微生物菌群
     The results show that supplement with 20g/kg of the bitter bean seed's dregs to basic diet can increase bifidobacteria quantity in the cecal contents of AA broilers,and improve the cecal microbial community structure.
     表明在AA肉鸡基础日粮中,添加浓度为20 g/kg的苦豆籽粕可以增殖盲肠中的双歧杆菌数,改善肠道微生物菌群结构。
短句来源
     Application of PCR-fingerprinting to analyze the microbial community structure from human oral cavity
     PCR指纹图谱技术分析人体口腔内微生物菌群结构
短句来源
     Results show: it can greatly shorten fermentation time and enhance the content of the available components in organic fertilizer by inoculating high effective microbial community and controlling ferment conditions during solid state fermentation.
     结果表明:在固态好氧发酵过程中,通过引入高效微生物菌群,控制发酵条件,可大大缩短发酵时间,提高肥分。
短句来源
     The effects of high effective complex microbial community (MECMC) in a combination composting process of municipal solid waste (MSW) and sludge were examined through inspecting biomass,temperature,organic matter,the carbon,nitrogen ration (C/N).
     利用高效复合微生物菌群对生活垃圾和污泥混合堆肥 ,通过测定堆肥过程中总菌数、温度、有机物、C/N比等 ,较系统地研究了高效复合微生物菌群在生活垃圾、污泥混合堆肥系统中的作用 .
短句来源
     This review introduces a series of methods about activated sludge microbial community research,including traditional cultivation-based methods, microbial biomarkers, molecular biological technology and modern culture approaches, especially focusing on a summarization of molecular biological technology, such as PCR-DGGE,FISH,FCM, and its application for research on the activated sludge bacterial community.
     主要介绍活性污泥微生物菌群研究的一系列方法,从传统培养方法到基于免培养的现代分子生物学技术,再到现代培养技术,着重论述了现代分子生物学技术及其在活性污泥微生物菌群研究中的进展。
短句来源
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  微生物种群
     Study on microbial community in anaerobic granular sludge by molecular technology
     利用分子生物技术对厌氧颗粒污泥中微生物种群结构的研究
短句来源
     The accumulation of acetate and variation of microbial community structure during anaerobic fermentation of sludge were studied by using a special inhibitor-2-bromoethanesulfonate (BrCH2CH2SO-3, BES) to inhibit methanogens.
     研究了污泥厌氧发酵过程中产甲烷菌被特异性抑制剂——2-溴乙烷磺酸盐(BrCH2CH2SO3-,BES)抑制时乙酸的累积,并采用一种新的微生物分子生态学手段——末端限制性片段长度多态性分析(T-RFLP)研究乙酸累积状态下的微生物种群结构.
短句来源
     Study on Microbial Community Structure in Anaerobic Granular Sludge for 2-chlorophenol-degradation
     降解2-氯酚厌氧污泥中微生物种群结构研究
短句来源
     2. On the basis of Dice coefficient (Cs), Similarity analysis of the DGGE band patterns indicated that the composition of microbial community at different layers of the reactor exhibited a moderate shift during the stable phase, Cs between the top andbottom layers were 71.4~77.6 for eubacteria and 70.4~76.7 for archaea.
     (2)基于DGGE图谱的相似性分析,随着进水PCP负荷的逐步提升,当反应器稳定运行时,反应器内上下层活性污泥微生物种群结构组成相似,细菌相似性C_s在71.4~77.6之间,古细菌在70.4~76.7之间。
短句来源
     Study on Microbial Community in Methanogenic Granular Sludge by FISH and DGGE
     利用FISH和DGGE对产甲烷颗粒污泥中微生物种群的研究
短句来源
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      microbial community
    Microbial community structure in different wastewater treatment processes characterized by single-strand conformation polymorphi
          
    The results indicated that the microbial community profiles in the wastewater bioreactors with the uniform status were very similar.
          
    The SSCP profiles could identify the difference in microbial community structures in wastewater treatment processes, monitor some of the functional microbes in these processes, and consequently provide useful guidance for improving their efficiency.
          
    The efficiency of an oil-oxidizing microbial community in the bioremediation of oil-polluted soil was studied under laboratory conditions.
          
    The microbial community of mown-meadow soil was characterized by a greater biomass and activity due to prevalence of microorganisms with the r strategy, compared to the microbial community of unmown-meadow soil.
          
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    To examine the effectiveness of the multiple-species microbial community test for monitoring toxic stress, the artificial substrate, polyurethane foam unit (PPU), method developed by Dr. Cairns was taken for colonizing mierobial community. Field and laboratory experiments of toxic effects on the community were conducted in a series of five oxidation ponds (in Ya-Er Lake.) built for treating wastewater from a pesticide factory in Sep.-Dec. 1982. The microbial community structural parameters...

    To examine the effectiveness of the multiple-species microbial community test for monitoring toxic stress, the artificial substrate, polyurethane foam unit (PPU), method developed by Dr. Cairns was taken for colonizing mierobial community. Field and laboratory experiments of toxic effects on the community were conducted in a series of five oxidation ponds (in Ya-Er Lake.) built for treating wastewater from a pesticide factory in Sep.-Dec. 1982. The microbial community structural parameters (protozoan species composition, chlorophyll component and bacterial abundance) and the functional parameters (protozoan colonization rate and community respiration rate) were estimated. Concentrations of organic phosphorus, p-nitrophenol, HCH, COD in the ponds were analysed as well. Both structural (and functional parameters appeared to be good indicators of stress. The higher concentrations of the toxicants, the lower was the colonization rate of the protozoan community. The results from the field were found to be coincident with that from the laboratory. Therefore, it is possible to predict the effects of various chemicals on the ecosystems with the PFU protozoan community toxicity tests. The number of protozoan species colonizing PFU after the exposure of 1 to 3 days is good enough for a routine biological monitoring. All the experiments were repeated successfully by students in the PFU training course in 1983 and 1984. It is justified that the PFU method is a rapid, accurate and economic way in biological monitoring.

    应用PFU法收集微型生物群落,监测鸭儿湖的农药污染。原生动物对五个氧化塘内农药废水的毒性反应,可用群集过程来表示,无论室内或是野外试验,结果基本一致。其中微型生物群落的结构参数有原生动物种类组成和种数、叶绿素a含量、水细菌数量;功能参数有反映原生动物群集过程中的S_(eq)、G、t_(90%)和微型生物的呼吸速度。功能和结构的参数均能较准确地反映出氧化塘系统的净化过程。PFU法可应用于预报污染物的生物效应浓度,初认为是一种经济、快速、正确的生物学监测方法。

    Three hundred and fifty-nine strains of bacterium and fifty-seven strains of yeast isolated from foregut, hindgut, coelomic liquid and body surface of Stichopus japonicus were studied for biochemical activities. Bacteria mainly belong to eleven genera: Vibrio, Pseudomonas, Neisseria, Acinetobacter, Flavobacterium, Arthrobacter, Micrococcus, Xanthomonas, coryneba-cterium, Caulobacter and Alcaligenes. Yeasts are attributed to Torulopsis, Rhodotorula, Cryp-tococcus, and Dcbaryomyces.Bacterial isolates from hindgut...

    Three hundred and fifty-nine strains of bacterium and fifty-seven strains of yeast isolated from foregut, hindgut, coelomic liquid and body surface of Stichopus japonicus were studied for biochemical activities. Bacteria mainly belong to eleven genera: Vibrio, Pseudomonas, Neisseria, Acinetobacter, Flavobacterium, Arthrobacter, Micrococcus, Xanthomonas, coryneba-cterium, Caulobacter and Alcaligenes. Yeasts are attributed to Torulopsis, Rhodotorula, Cryp-tococcus, and Dcbaryomyces.Bacterial isolates from hindgut of hungry S. japonicus are characterized by abundance in members of Caulobacter which are rarely isolated from marine sedimentary environment. The studies on microbial composition and physiological property show that the debris of algae cOuld be selectively taken in by S. japonicus. Bacillus strains are the common members in the habitat sedimentary mud, but few of them could be found from S. japonicus. Vibrio and Pseudomonas are depressed in the hindgut though they are dominant in foregut. The concentrate of coelomic liquid from living S. japonicus was prepared by lyophilization and showed certain inhibitory action for some bacteria. This kind of inhibitory substance may play a special role for regulating and controlling the microbial community of S. japonicus.

    从刺参Stichopus japonicus前后消化管、体腔液和表皮上所分离到的359株细菌分别属于弧菌属、假单胞菌属、奈瑟氏球菌属、不动杆菌属、柄杆菌属、黄杆菌属、节杆菌属、微球菌属、黄单胞菌属、棒杆菌属、产碱菌属这十一个主要菌属;57株酵母菌分别属于球拟酵母属、红酵母属、隐球酵母属和德巴利氏酵母属四个属。刺参样品分别于1986年10月至1988年5月采自灵山岛、威海和青岛。 研究表明,刺参肠道微生物的特异性主要体现在后肠,并在其中分离到罕见的Caulobacter属菌株。肠道微生物的组成和生理生化特性,反映出刺参选择性摄取藻类营养的特点。刺参栖居地泥中常见的芽孢杆菌在肠道内很少发现;前肠数量较高的弧菌和假单胞菌在后肠大为消弱。刺参体液对某些细菌有抑制作用,对体内微生物组成与数量有一定调节控制作用。

    Toxic tests of surfactant DBS (Dodecyl Benzene Sulfonate) were carried out at three biological organization levels: species, population. and community. Results showed that there were no specific differences in the acsute toxicity of DBS among five protozoan species: Paramecium caudatum, Tetrahymena americanis, T. piqmentosa, T. borealis 3IV WW0, T. borealis 3II VM665, and T. tropicalis DIV TC 89 (P>0.05). 12h-LC_(50) was between 7.0 and 10.47 ppm. At the population level of Tetrahymena americanis, the 12h-LC_(50)...

    Toxic tests of surfactant DBS (Dodecyl Benzene Sulfonate) were carried out at three biological organization levels: species, population. and community. Results showed that there were no specific differences in the acsute toxicity of DBS among five protozoan species: Paramecium caudatum, Tetrahymena americanis, T. piqmentosa, T. borealis 3IV WW0, T. borealis 3II VM665, and T. tropicalis DIV TC 89 (P>0.05). 12h-LC_(50) was between 7.0 and 10.47 ppm. At the population level of Tetrahymena americanis, the 12h-LC_(50) was 17.21 ppm; the effective concentration of DBS was 12.84 ppm (P<0.05), based on the respiration of Tetrahymena americanis, determined by the Gilson Differential Respirometer. From low (3 ppm) to high (40 ppm) concentrations the toxic effects of DBS on the structure and function of the microbial community increased. The structural parameters included the number of protozoan spe-ciesand their composition. The functional parameters included the colonization process (S_(eq), G, T_(90%)) and the ratio of photosynthesis to respiration. There was a strong negative correlation between S_(eq) and natural logarithm of DBS concentration; their relationship can be described by the regression equation S_(eq) = 29.7281—5.6722 InC. (P<0.05). The effective concentrations (EC) were calculated from the equation, and the EC_(50), EC_(20), EC_5 were 4.684, 0.51, 0.1681 ppm respectively. Based on 12h-LC+(50) at species and population levels, MATC was 0.70 and 1.721 ppm respectively when AF was 0.1, and 0.07, 0.1721 ppm respectively when AF was 0.01. Comparison between the MATC and the values of EC_(20) and EC_5 reveals that the results from the microcosms are more scientifically-based and more realistic in the sense of environmental protection. Thus, the MATC in the Donghu Lake should be kept below 0.5 ppm or preferably below 0.17 ppm.

    进行了十二烷基苯磺酸钠(DBS)对原生动物的种、种群和群落等三个不同生物学组织水平的毒性试验。结果表明:DBS对5种原生动物的急性毒性作用没有种的特异性(p>0.05)。半致死浓度12h-LC_(50)在7.0—10.47ppm之间;对美洲四膜虫种群的急性毒性作用,12h—LC_(50)为17.21ppm;对其呼吸率的影响,表明其效应浓度为12.84ppm(p<0.05);3—40ppm DBS,对微型生物群落的结构、功能有不同程度的影响。结构参数有原生动物种类组成和种类数;功能参数有原生动物群集过程、微型生物群落的P/R化。反映原生动物群集过程的3个参数S_(eq)、G和T_(90%)中的S_(eq)与DBS浓度的自然对数成直线负相关,由其回归方程Y=29.7281—5.6722X(p0.05)推算出DBS对原生动物群落的EC50、EC20和EC5分别为4.684、0.51和0.1681ppm。以种和种群水平的12h-LC_(50)为基础,推算出的MATC,在AF为0.1时,分别为0.7和1.721ppm;在AF为0.01时,MATC为0.07和0.1721ppm。比较来自种和种群水平的MATC与来自群落水...

    进行了十二烷基苯磺酸钠(DBS)对原生动物的种、种群和群落等三个不同生物学组织水平的毒性试验。结果表明:DBS对5种原生动物的急性毒性作用没有种的特异性(p>0.05)。半致死浓度12h-LC_(50)在7.0—10.47ppm之间;对美洲四膜虫种群的急性毒性作用,12h—LC_(50)为17.21ppm;对其呼吸率的影响,表明其效应浓度为12.84ppm(p<0.05);3—40ppm DBS,对微型生物群落的结构、功能有不同程度的影响。结构参数有原生动物种类组成和种类数;功能参数有原生动物群集过程、微型生物群落的P/R化。反映原生动物群集过程的3个参数S_(eq)、G和T_(90%)中的S_(eq)与DBS浓度的自然对数成直线负相关,由其回归方程Y=29.7281—5.6722X(p0.05)推算出DBS对原生动物群落的EC50、EC20和EC5分别为4.684、0.51和0.1681ppm。以种和种群水平的12h-LC_(50)为基础,推算出的MATC,在AF为0.1时,分别为0.7和1.721ppm;在AF为0.01时,MATC为0.07和0.1721ppm。比较来自种和种群水平的MATC与来自群落水平的EC20、EC5,后者更具科学性和环境真实性。因此,对于东湖,MATC不得高于0.5ppm,最好低于0.17ppm。

     
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