Bacterial preferences and growth kinetic variation inUronema marinum andUronema nigricans (Ciliophora: Scuticociliatida) [0.03%]
Uronema marinum和Uronema nigricans（纤毛门：盾纤虫目）的细菌偏好及生长动力学差异
B Pérez-Uz
B Pérez-Uz
The growth kinetics of two species of the genus Uronema, the marine U. marinum and the freshwater U. nigricans, have been studied under equivalent culture conditions. Ciliates were fed on three bacterial strains at three different concentra...
Response of pioneer soil microalgal colonists to environmental change in Antarctica [0.03%]
南极环境变化下先锋土壤微藻群落的响应
D D Wynn-Williams
D D Wynn-Williams
There is increasing evidence of climate change in Antarctica, especially elevated temperature and ultraviolet B (UVB) flux within the ozone "hole." Its origins are debatable, but the effects on ice recession, water availability, and summer ...
Effects of temperature and salinity on survival of toxigenicVibrio cholerae O1 in seawater [0.03%]
温度和盐度对海水中的产毒霍乱弧菌O1存活影响的研究
S A McCarthy
S A McCarthy
In 1991 and 1992, the Latin American epidemic strain of Vibrio cholerae O1 was isolated from ballast water, bilge water, and sewage taken from cargo ships docked in Mobile Bay, Alabama. The findings raised questions regarding the organism's...
Thymidine incorporation of bacteria sequentially extracted from soil using repeated homogenization-centrifugation [0.03%]
土壤反复匀浆离心逐级提取的细菌掺入胸腺嘧啶实验研究
E Bååth
E Bååth
Bacteria were sequentially extracted from soil into a water suspension after shaking soil with water or mixing it in a blender followed by a low-speed centrifugation. Bacteria, which were released only after several cycles of homogenization...
High concentrations of viruses in the sediments of Lac Gilbert, Québec [0.03%]
魁北克Gilbert湖沉积物中的高浓度病毒体
R Maranger,D F Bird
R Maranger
Viruses were found to be very abundant in the top layer of the sediments of Lac Gilbert, Québec. Viruses were extracted from the sediments using pyrophosphate buffer, and viruses from the diluted extracts were pelleted onto grids and enume...
Interactions between a genetically markedPseudomonas fluorescens strain and bacteriophage ΦR2f in soil: Effects of nutrients, alginate encapsulation, and the wheat rhizosphere [0.03%]
营养物、藻酸盐包埋和小麦根圈对土壤中恶臭假单胞菌(Pseudomonas fluorescens)标记株与噬菌体ΦR2f相互作用的影响研究
E Smit,A C Wolters,H Lee et al.
E Smit et al.
The introduction of bacteriophages could potentially be used as a control method to limit the population size of engineered bacteria that have been introduced into soil. Hence, the ability of a species-specific phage, ΦR2f, to infect and l...
Evaluation of media and techniques to enumerate heterotrophic microbes from karst and sand aquifer springs [0.03%]
评估基岩和砂地含水层泉水异养微生物计数的培养基和方法
A T Mikell Jr,C L Smith,J C Richardson
A T Mikell Jr
Several media and techniques were compared for their efficiency to enumerate viable heterotrophs from both a karst and sand aquifer spring. A medium designed to enumerate bacteria from nutrient-poor waters (HCFU) as well as R2A medium prove...
Comparative study of nickel toxicity to growth and photosynthesis in nickel-resistant and -sensitive strains of Scenedesmus acutus f. alternans (Chlorophyceae) [0.03%]
镍对绿藻科Scenedesmus acutus f. alternans耐镍和敏感菌株的生长和光合作用毒性的比较研究
X Jin,C Nalewajko,D J Kushner
X Jin
Nickel (Ni) toxicity to growth and photosynthesis was studied in four strains of Scenedesmus acutus f. alternans. Effects of Ni dosage and duration of exposure on growth and photosynthesis were strain specific. Large differences in response...
Kinetics of flagellate grazing in the presence of two types of bacterial prey [0.03%]
两种细菌饵料共存时鞭毛虫捕食的动力学过程研究
P Menon,S Becquevort,G Billen et al.
P Menon et al.
Grazing rates of mixed cultures of freshwater, heterotrophic nanoflagellates on two populations of bacterial prey present together at varying concentrations were measured by using fluorescently labeled bacteria. The effect of one population...
Changes in functional abilities of the microbial community during composting of manure [0.03%]
堆肥化过程中畜禽粪便功能能力的变化
H Insam,K Amor,M Renner et al.
H Insam et al.
The objective of this study was (a) to detect changes of the functional abilities of the microflora during composting of manure as a result of windrow turning frequency and (b) to detect differences between distinct zones within the windrow...