Microorganisms from composting leaves: Ability to produce extracellular degradative enzymes [0.03%]
堆肥落叶中的微生物：产生胞外降解酶的能力
L Hankin,R P Poincelot,S L Anagnostakis
L Hankin
Mixed populations of bacteria, fungi, and actinomycetes in a leaf compost pile were examined over a 100-day test period for their ability to produce extracellular proteolytic, lipolytic, amylolytic, cellulolytic, pectolytic, and ureolytic e...
A Marbach,M Varon,M Shilo
A Marbach
Marine bdellovibrio isolates from the Israeli littoral of the Mediterranean Sea were screened and characterized in terms of host range, temperature and salinity ranges, cation requirement, mutation frequency, and G + C% mole content. Ten ty...
On describing microbial growth kinetics from continuous culture data: Some general considerations, observations, and concepts [0.03%]
连续培养数据描述微生物生长动力学：一些总体考虑、观察和概念
A T Law,B R Robertson,S S Dunker et al.
A T Law et al.
Analysis of continuous culture methodology suggests that this potentially powerful tool for kinetic analysis can be improved by minimizing several inherent shortcomings. Medium background substrates - organic carbon, phosphate, and manganes...
Autoradiographic screening for potential heterotrophs in natural algal populations of Lake Kinneret [0.03%]
基特里特湖自然藻类群落潜在异养菌的自显影筛选研究
U Pollingher,T Berman
U Pollingher
Microautoradiography was used to screen natural phytoplankton populations from Lake Kinneret for their ability to take up radioactive organic substrates (glucose, acetic acid, amino acids, and glycollic acid. Several of the important Chloro...
Electron microscopic study of succession in the periphyton community of lake Washington [0.03%]
里海华盛顿湖附生生物群落更替的电子显微镜研究
T L Jordan,J T Staley
T L Jordan
Microbial succession has been observed on electron microscope grids immersed in lake water for 1, 3, 6, and 10 days. As predicted by ecological theory, the biomass, numbers, and diversity of attached microorganisms increased as succession p...
Observations on estuarine microfouling using the scanning electron microscope [0.03%]
扫描电镜观察河口微附着生物群体
L H Disalvo,G W Daniels
L H Disalvo
Scanning electron microscopy was used to observe microbiological primary fouling of glass surfaces exposed in estuarine waters. Observations on clean glass, and glass treated with water-repellent coatings, showed that bacterial slimes adher...
R Mitchell,I Chet
R Mitchell
Coral heads of the genusPlatigyra exposed to low concentrations of crude oil, copper sulfate, potassium phosphate, or dextrose were killed in periods of 5 to 10 days in aquarium studies. The chemicals stimulated the production of large quan...
W N Mack,J P Mack,A O Ackerson
W N Mack
The transmission and scanning electron microscopes were employed to visualize the sequence of the biofilm development in the trickling wastewater filter. After the deposit of a small amount of debris upon a hard surface, the bacterial cells...
Circadian chronotypic death in heat-synchronized infradian mode cultures ofTetrahymena pyriformis W [0.03%]
四膜虫昼夜型死亡的热同步低频模式调控机制研究
J C Meinert,C F Ehret,G A Antipa
J C Meinert
Continuous cultures ofTetrahymena pyriformis in the infradian ("slow-exponential") growth mode can be entrained to give circadian rhythms of cell division by the application of thermal cycles with periods of 24 hr. The degree of synchroniza...
I Chet
I Chet
The ultrastructure of developing and mature sclerotia ofSclerotium rolfsii was studied with a scanning electron microscope. The mature sclerotium is disconnected from the mycelium and well differentiated. The rind is composed of rather thic...