Factors affecting trimethylarsine and dimethylselenide formation byCandida humicola [0.03%]
影响Candida humicola菌株产生三甲基胂和二甲基硒化物的因素
D P Cox,M Alexander
D P Cox
Selenite, selenate, and tellurate inhibited the conversion of arsenate to trimethylarsine byCandida humicola. Trimethylarsine disappeared from the gas phase when incubated withC. humicola in the presence of selenium or tellurium salts. The ...
Vibrio parahaemolyticus andVibrio alginolyticus: Short generation-time marine bacteria [0.03%]
副溶血性弧菌和褐藻胶裂解弧菌：短代时的海洋细菌
S Ulitzur
S Ulitzur
The growth rates of 30 different strains ofVibrio parahaemolyticus andVibrio alginolyticus at 37°C was determined. Each species consists of two major groups, one having a short generation time (12-14 min) and one with a longer generation t...
Refractive index of uranyl-treated bacterial cytoplasm as related to ribonucleic-acid content and growth rate [0.03%]
与核糖核酸含量和生长速率相关的处理后细菌细胞质的折射率
G W Fuhs,M Chen
G W Fuhs
After fixation and treatment with uranyl acetate solutions, the refractive index (n D) of the cytoplasm ofCorynebacterium bovis varies with substrate-dependent growth rate and RNA content. The effect, which presumably is due to quantitative...
Coexistence of organisms competing for the same substrate: An example among the purple sulfur bacteria [0.03%]
竞争相同底物的生物体共存的例子：紫硫细菌中的案例分析
H van Gemerden
H van Gemerden
The purpose of this study was to find a possible explanation for the coexistence of large and small purple sulfur bacteria in natural habitats. Experiments were carried out withChromatium vinosum SMG 185 andChromatium weissei SMG 171, grown...
Decomposition of deciduous leaf litter in a woodland stream : I. A. Scanning electron microscopic study [0.03%]
落叶型木本植物树叶的分解作用（第一部分）——扫描电镜研究
K F Suberkropp,M J Klug
K F Suberkropp
Microorganisms associated with decomposing deciduous leaf litter in a woodland stream were examined by scanning electron microscopy. The use of a critical point drying method allowed the preservation of a wide variety of microorganisms as w...
J D Walker,R R Colwell
J D Walker
Two areas of Chesapeake Bay, Colgate Creek in Baltimore Harbor and Eastern Bay, are presently under study, with routine sampling of water and sediment for petroleum-degrading microorganisms (bacteria, yeasts, and fungi) by direct plating an...
The identification of gas vacuoles and their abundance in the hypolimnetic bacteria of Arco Lake, Minnesota [0.03%]
明尼苏达州阿科湖下层水中细菌中气体囊的鉴定及其丰度
A E Walsby
A E Walsby
Bright refractile granules in bacterial cells are identified as gas vacuoles if they disappear on application of a few atmospheres pressure. This paper describes a simple method for observing individual cells under the light microscope befo...
Effects of PCB on interspecific competition in natural and gnotobiotic phytoplankton communities in continuous and batch cultures [0.03%]
PCB对连续培养和批量培养的自然和已知微生物群落藻类竞争的影响
N S Fisher,E J Carpenter,C C Remsen et al.
N S Fisher et al.
The toxicity of polychlorinated biphenyls (PCB) to the diatomThalassiosira pseudonana (formerlyCyclotella nana), grown in pure and mixed cultures, was greatest when in competition with other species. Continuous cultures were superior to bat...
Microbial transformations of some(14)C-labeled substrates in coastal water and sediment [0.03%]
海滨水域和沉积物中某些((14)C-标记底物的微生物转化
C O Wirsen,H W Jannasch
C O Wirsen
In order to complement data obtained from earlier deep-sea studies on microbial transformations, similarin situ incubation experiments were done in shallow coastal waters. Compared to laboratory controls,in situ activities were reduced abou...
A D Rovira,R Campbell
A D Rovira
The scanning electron microscope was used to study the microorganisms on wheat roots grown in both soil and sand. Bacteria became common on the root surface only in the root hair region of young roots; nearer the tip of the root they were r...