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colonization of bacteria
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  “colonization of bacteria”译为未确定词的双语例句
     Great advance had made about nosogenesis of VAP in recently ten years, it believed that the VAP caused mainly by colonization of bacteria in oropharyngeal and inhale secretion into lower respiratory tract, which it developed to pneumonia.
     近十年来对呼吸机相关性肺炎的发病机制研究有了较大的进展,认为VAP的发病主要是由于口咽部细菌繁殖和误吸导致分泌物吸入到下呼吸道,最终发生肺炎。
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     In the condition of continuous darkness or illumination, the colonization of bacteria was weaker than that of light for 12 hours a day.
     光照对拮抗细菌的定殖也影响很大,黑暗或持续光照24h条件下,拮抗细菌的定殖要比光照12h差。
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     Inflammation of peri-implant tissues may be triggered by oral microorganism, whose adhesion to and colonization on prosthesis were the first factor led to disease, furthermore, adhesion and colonization of bacteria were influenced by different roughness of materials.
     种植体周围炎一般认为是口腔微生物直接引起的种植体周软、硬组织的炎症过程。 微生物在修复体表面的黏附与定植是其产生致病性的首要条件之一,而不同材料不同粗糙度对细菌的黏附定植均有不同的影响。
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     Conclusions (1) The pH value of gastric juice proved to be the major factor which influenced the colonization of bacteria especially GNB in gastric cavity.
     结论  (1)胃液pH值是影响胃腔定植菌特别是革兰阴性杆菌定植的主要因素。
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     Conclusion Early flap coverage before colonization of bacteria, appropriate antibiotic administration, early bone grafting, and safe and practical ETS (end to side) technique are advocated.
     结论提倡合理使用抗菌素,早期覆盖创面及植骨。 端-侧吻合是适用和安全的。
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     Progress of the studies on bacteria root colonization
     细菌根部定殖研究进展
     Endophytic bacteria: separation, classification, colonization and application
     植物内生细菌的分离、分类、定殖与应用
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     COLONIZATION OF "YIELD-INCREASING BACTERIA" ON THE PHYLLOPLANE OF WHEAT
     增产菌在小麦叶面定殖的研究
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     Colonization of Antagonistic Bacteria Against Botrytis cinerea on Tomato
     灰葡萄孢拮抗细菌在番茄植物体表的定殖
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     STUDY ON IDENTIFICATION, COLONIZATION AND REORGANIZATION OF RICE ENDOPHYTIC BACTERIA
     水稻优势内生细菌鉴定、定位与重组研究
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  colonization of bacteria
Colonization of bacteria on the polyethylene tubes and the gallstones was found six and 12 weeks after implantation.
      
Associated with this rapid colonization of bacteria, decomposition rates of cellulose and xylan increased.
      
This study was designed to evaluate the effects of the inorganic electrolytes present in human tear film on the viability and colonization of bacteria to hydrogels.
      
The formation of specific IgAs in saliva correlates with the colonization of bacteria in the oral cavity.
      
The colonization of bacteria in cucumber roots was detected by transmission electron microscopy.
      
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The process of attachment of diazotroph Alcaligenes faecalis to host plant rice was studied by using 15N-labelled bacteria and Tn5-induced mutants.A three-step attachment mechanism of A.faecalis to rice root surface is proposed by us on the basis of experimental data.Adsorption is the first step of attachment.The number of adsorbed bacteria reaches maximal level after 3 h of inoculation,it consists 3.7% of the total number of bacteria inoculated.Adsorbed bacteria could be removed from rice root surface quantitatively...

The process of attachment of diazotroph Alcaligenes faecalis to host plant rice was studied by using 15N-labelled bacteria and Tn5-induced mutants.A three-step attachment mechanism of A.faecalis to rice root surface is proposed by us on the basis of experimental data.Adsorption is the first step of attachment.The number of adsorbed bacteria reaches maximal level after 3 h of inoculation,it consists 3.7% of the total number of bacteria inoculated.Adsorbed bacteria could be removed from rice root surface quantitatively by shaking in water.Therefore,the adsorption forces are weak.Anchoring is the second step.It begins only after 9h of inoculation and reaches a maximal level (21%) after 16 h.Anchored bacteria could not be removed by shaking.Colonization is the third step.After 20h of inoculation,part of anchored bacteria colonizes on rice root surface tightly,and it can not be removed by vortex.At this time,the pectolytic activity of bacteria appears.Chemotaxis and exopolysac-charide(EPS) play important roles in the attachment of A.faecalis to rice root surface.EPS mutants (Exo-,Exo++) showed less anchoring-capability in comparison with wild type of bacterium,but they rimained the adsorption capability.While chemotaxis (Che-)mutants are defective in adsorption,but not in anchoring.Che-,Exo-mutant lost both adsorption and anchoring capabilities.A.faecalis absorbed on all part of rice root such as main roots,lateral roots,root caps etc,but the anchoring and colonization of bacteria were occured mainly on root hairs,particularly on the joint area of main root and lateral root.

应用~(15)N同位素标记菌体和Tn5转座子诱变的突变株研究固氮粪产碱菌对宿主水稻的联合进程,结果表明,粘附作用是结合过程的第一步,接种3h后粘附在根表的菌体数量达最大值,约占接种量的3.7%。粘附的菌体易脱离根表,表明粘附作用是细菌与宿主植物间的弱的相互作用。在根表定位是结合过程的第二步。接种15h后,定位菌体数量达最大值,约占接种量的21%。经振荡处理不能使定位菌体脱离根表。定殖是结合过程的第三步,接种20h后定殖菌体紧密结合于根表,剧烈振荡亦不易使其脱离根表。定殖后菌体开始出现果胶酶活性。采用趋化(Che)和胞外多糖(Exo)突变株研究表明,趋化性和胞外多糖的合成是影响细菌在根表结合的重要因素。粪产碱菌在水稻根表没有专一的粘附部位,但粪产碱菌的定位和定殖主要发生在主根根表,尤其是主、侧根交接处。

We hypothesized that bacterial biofilm formation could be an important factor that make some infection intractable. Interaction of \%P.aeruginosa\% biofilm with antibactial agents was examined in vitro Methods: \%P. aeruginosa\% incubated for 6 days in a saline\|teflon system formed biofilm on the surfaces of the teflon piece. The biofilm were characteried by dense colonization of bacteria and thick membranous structure that covered the colonies, it was observed with a scanning electron microscopy. CPFX,CAM,...

We hypothesized that bacterial biofilm formation could be an important factor that make some infection intractable. Interaction of \%P.aeruginosa\% biofilm with antibactial agents was examined in vitro Methods: \%P. aeruginosa\% incubated for 6 days in a saline\|teflon system formed biofilm on the surfaces of the teflon piece. The biofilm were characteried by dense colonization of bacteria and thick membranous structure that covered the colonies, it was observed with a scanning electron microscopy. CPFX,CAM, ROX and Herba Andrographitis were added to the biofilm bacteria. Results: The rate of survial of the floating bacteria decresed to 0.02% after 4 hours of contact with 2MIC of Ciprofloxacin (CPFX), but that of biofilms was 41% When 10 μg/mL of Clarithromycin (CAM per mL was combined with CPFX, the survial r ate for the biofilm bacteria decreased to 0.2%. When 12 μg/mL of Roxithromycin (ROX) was combined with CPFX, the survial rate for the biofilm bacteria dacreased to 0.5%. When 0.05g of Burm. f. per mL was combined with CPFX the survial rate for the biofilm bacteria decreased to 2.7%. Conclusion: We conclude that biofilm bacteria are much more resistant to CPFX than the floating bacteria. the combination of CPFX and CAM, ROX HA were more effective in decreasing the biofilm bacteria survial rate than CPFX alone. The results suggest that the combination of CPFX and CAM, ROX, HA can be one of the therapeutic manauvers against biofilm bacteria.

细菌生物被膜形成在难治性感染中起重要作用,本实验在体外进行铜绿假单胞菌生物被膜与抗菌药物作用的研究。铜绿假单胞菌在生理盐水特氟隆系统孵育6d,可在特氟隆表面上形成细菌生物被膜(Biofilm),经扫描电镜证实,它包裹在微菌落表面。应用环丙氟哌酸,甲红霉素,罗红霉素,穿心莲作用于生物被膜细菌并观察结果。发现与2倍MIC环丙氟哌酸作用4h后,悬浮细菌存活率降至002%,但生物被膜细菌存活率则为41%,当10μg/mL甲红霉素,12μg/mL罗红霉素,005g/mL穿心莲分别与环丙氟哌酸联合应用时,生物膜细菌存活率分别降至02%,05%和27%。结果表明生物被膜细菌对环丙氟哌酸的抵抗力较悬浮细菌明显增强,而环丙氟哌酸分别与甲红霉素,罗红霉素,穿心莲联合应用则有明显抑菌作用。推测此种联合用药方式可能提高对难治性感染的治疗效果

Objective To investigate the risk factors for gastric bacterial colonization and its role in the endogenous pathogenesis of ventilator-associated pneumonia (VAP). Methods The type and concentration of gastric colonized bacteria and its relationship with the time when samples were collected, and with the type and occurrence order of the pathogens detected in samples from lower respiratory tract after the onset of VAP were analyzed dynamically in the patients with tracheal-intubation or tracheotomy in intensive...

Objective To investigate the risk factors for gastric bacterial colonization and its role in the endogenous pathogenesis of ventilator-associated pneumonia (VAP). Methods The type and concentration of gastric colonized bacteria and its relationship with the time when samples were collected, and with the type and occurrence order of the pathogens detected in samples from lower respiratory tract after the onset of VAP were analyzed dynamically in the patients with tracheal-intubation or tracheotomy in intensive care unit (ICU). Results (1)The isolation rate of colonized bacteria in gastric cavity was associated with the pH of gastric juice. When the pH of gastric juice was >4, the isolation rate of Gram-negative bacilli (GNB) in gastric cavity markedly increased, achieving 52.5% in VAP group, and the incidence of VAP was higher ( P =0.017). The pH value of gastric juice was positively correlated with the logarithmic concentration of GNB in gastric cavity ( P =0.001).(2) As the duration of intubation prolonged, the isolation rate of enterobacteriaceae in VAP group increased, which was 45.2% on the fifth day of intubation. In contrast, the isolation rate in non-VAP group was 11.1% ( P <0.01). (3) The colonization of enterobacteriaceae in gastric cavity was 1-2 days earlier than that in oropharynx. The order was statistically significant ( P =0.015).(4) The reverse order of stomach-pharynx-lower respiratory tract colonization was found in 12 cases of the total 52 VAP patients and the order of stomach to lower respiratory tract colonization was found in 3 cases. Conclusions (1) The pH value of gastric juice proved to be the major factor which influenced the colonization of bacteria especially GNB in gastric cavity. (2) The gastric cavity was probably a colonization place of GNB especially enterobacteriaceae. (3) The enterobateriaceae in gastric cavity tended to colonize reversely to oropharynx. (4)The phenotypic analysis of the pathogens showed that the reverse stomach-pharynx-lower respiratory tract infection route existed in VAP patients.

目的 探讨胃腔内病原菌定植的影响因素以及胃腔定植菌在机械通气相关性肺炎(VAP)内源性发病机制中的作用。方法 前瞻性队列研究 ,动态观察和比较重症监护病房 (ICU)建立人工气道包括气管插管或气管切开患者 (98例 ,VAP组 5 2例 ,无VAP组 4 6例 )胃腔和口咽部病原菌定植种类、浓度、与采样时间的关系 ,以及发生肺炎后下呼吸道标本中出现病原菌的种类与时序。结果  (1)胃腔内定植菌检出率随胃液pH值升高逐渐增加。胃液pH >4时 ,胃腔内革兰阴性杆菌分离率明显上升 ,VAP组革兰阴性杆菌检出率达 5 2 5 %。胃液pH值与胃内革兰阴性杆菌浓度的对数呈正相关 (r =0 4 87,P =0 0 0 1)。胃液pH >4时的VAP发生率高于pH≤ 4 (P =0 0 17)。 (2 )VAP组肠杆菌科细菌检出率随插管时间延长而增加 ,至插管第 5天达 4 5 2 % ,无VAP组为 11 1% (P <0 0 1)。 (3)肠杆菌科细菌在胃腔和口咽部定植有先后次序 ,胃腔肠杆菌科细菌早于口咽部定植 1~ 2d ,比较肠杆菌科细菌在两部位定植次序差异有显著性 (P =0 0 15 )。 ...

目的 探讨胃腔内病原菌定植的影响因素以及胃腔定植菌在机械通气相关性肺炎(VAP)内源性发病机制中的作用。方法 前瞻性队列研究 ,动态观察和比较重症监护病房 (ICU)建立人工气道包括气管插管或气管切开患者 (98例 ,VAP组 5 2例 ,无VAP组 4 6例 )胃腔和口咽部病原菌定植种类、浓度、与采样时间的关系 ,以及发生肺炎后下呼吸道标本中出现病原菌的种类与时序。结果  (1)胃腔内定植菌检出率随胃液pH值升高逐渐增加。胃液pH >4时 ,胃腔内革兰阴性杆菌分离率明显上升 ,VAP组革兰阴性杆菌检出率达 5 2 5 %。胃液pH值与胃内革兰阴性杆菌浓度的对数呈正相关 (r =0 4 87,P =0 0 0 1)。胃液pH >4时的VAP发生率高于pH≤ 4 (P =0 0 17)。 (2 )VAP组肠杆菌科细菌检出率随插管时间延长而增加 ,至插管第 5天达 4 5 2 % ,无VAP组为 11 1% (P <0 0 1)。 (3)肠杆菌科细菌在胃腔和口咽部定植有先后次序 ,胃腔肠杆菌科细菌早于口咽部定植 1~ 2d ,比较肠杆菌科细菌在两部位定植次序差异有显著性 (P =0 0 15 )。 (4) 5 2例VAP患者有 12例下呼吸道病原菌呈现胃腔→口咽部→下呼吸道的逆向定植次序。 3例出现胃腔→下呼吸道的定植次序。结论  (1)胃液pH值是影响胃腔定植菌特别是革兰阴性杆菌定植的主要因素。 (2 )VAP

 
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