A modified slide culture method which combines advantages found in several slide culture methods is described. A block of inoculated nutrient agar sandwiched between two sterile cover glasses is placed in a plastic petri dish containing water agar. After adequate growth has occurred, the slide culture is disassembled and mounted in a conventional manner.

A hollow-fiber membrane chamber (HFMC) was developed as an in situ cultivation device for environmental microorganisms. The HFMC system consists of 48 to 96 pieces of porous hollow-fiber membrane connected with injectors. The system allows rapid exchange of chemical compounds, thereby simulating a natural environment. Comparative analysis through the cultivation of three types of environmental ...

The effect of a magnetic field on adhesion of cultured muscle cells to the culture plate has been studied in vitro. An experimental system was manufactured to apply a magnetic field to muscle cell culture. The system consists of a couple of solenoid coils, a culture dish of 52 mm internal diameter, and an inverted phase-contrast microscope. The solenoid coil generates the alternating magnetic f...

Extremely to slightly halophilic bacteria were tested for susceptibility to two sterilizing agents, peracetic acid (PAA) and ethylene oxide (ETO). PAA susceptibility was explored by two methods: an agar plate (constant pH of 7.2) and a filter strip (constant incubation period of 37 days); 100% susceptibility was obtained by both methods. The dosage (0.5 ml/min) was applied to a filter pad in a ...

TAMPERE UNIVERSITY OF TECHNOLOGY Department of information technology Signal processing laboratory SEPPÄNEN, JARNO: Computational models of musical meter recognition Master of Science thesis, 61 pages, 11 enclosure pages Examiners: Prof. Petri Haavisto, M.Sc. Anssi Klapuri, and M.Sc. Matti Hämäläinen Funding: Nokia Oyj November 2001

Preserved fish eggs can be used in many applications including artificial propagation and genetic studies. The aim of this study was to determine the effects of different temperatures and storage periods on fertilization and hatching success of short-term preserved scaly carp (Cyprinus carpio) eggs. Eggs were kept in 4 ml ovarian fluid in 10-cm petri dishes that were stored in a refrigerator at...

A reaction diffusion system with time delay is proposed for virus spread on bacteria immobilized on an agar-coated plate. The delay explicitly accounts for a virus latent period of fixed duration. An interval of possible spreading speeds for virus infection is established, and traveling wave solutions are shown to exist. Linear determinacy of spreading speed breaks down for some parameter values.

Fluorescence ratio imaging microscopy using pH-sensitive fluorescent dyes makes it possible to evaluate statistical distribution of intracellular pH in a population of the yeast S. cerevisiae examined in a thin layer of suspension in a Petri dish. The distribution appears to fit a Gaussian curve with a half-width around the 0.4 pH unit. The curve became slightly narrower after resuspension in a...

George Xylomenos, Department of Informatics, Athens University of Economics and Business, Greece, [email protected] George C. Polyzos, Department of Informatics, Athens University of Economics and Business, Greece, [email protected] Petri Mähönen, Center for Wireless Communications, University of Oulu, Finland, [email protected] Mika Saaranen, Center for Wireless Communications, University of O...

BACKGROUND The objective of the present research was to determine the frequency of Toxocara spp. eggs in soil samples of public parks, in the city of Tehran, Iran. METHODS A total of 600 soil samples were taken from 120 parks between Aprils to November, 2008. Soil samples were collected from 5 distinct sites in the parks. The samples were washed with saline solution and the collected sediment...