scholarly journals DESTRUCTION CAVITATION ACTION ON THE MICROBIAL CELLS SIZES

2018 ◽  
Author(s):  
Iryna Koval ◽  
Keyword(s):  
Microbial Cells ◽  
Cavitation Action

scholarly journals Synergistic Effect of Ultrasound Cavitation and Gas in the Water Disinfection

2021 ◽  
Vol 15 (4) ◽  
pp. 575-582
Author(s):  
Iryna Koval ◽  
Keyword(s):  
Carbon Dioxide ◽  
Synergistic Effect ◽  
Water Purification ◽  
Water Disinfection ◽  
Simultaneous Action ◽  
Short Term ◽  
Microbial Cells ◽  
Order Of Magnitude ◽  
Combined Action ◽  
Cavitation Action

The paper considers water purification processes from Bacillus bacteria type under the conditions of gases bubbling only (argon, helium, oxygen, and carbon dioxide), cavitation and combined action of gas and cavitation. The synergistic effect was found under conditions of simultaneous action of gas and cavitation (kd(gas/US ) >kd(gas) + kd(US) almost double) and it was shown that kd(gas/US) >kd(gas) by almost an order of magnitude. Relative series of effective destruction of microbial cells was established: Ar/US > О2/US >Не/US > СО2/US. Destruction degree of the cells reaches 70 %at the short-term Ar/US exposure (~8 min), which is 7 times more active than cavitation action and 13.5 times more than bubbling of Aralone.

scholarly journals Cavitation action on the cocci bacteria

2020 ◽  
Vol 2 (2) ◽  
pp. 45-48
Author(s):  
Iryna Koval ◽  
Amir Hajiali
Keyword(s):  
Water Samples ◽  
Nutrient Medium ◽  
Water Disinfection ◽  
Inert Gases ◽  
Simultaneous Action ◽  
Microbial Cells ◽  
Cavitation Action

Features of growth of microorganisms on a nutrient medium and their microscopic researches were studied. Cavitation treatment (22 kHz, 91 W, 1.65 W/сm3) of water with the simultaneous action of bubbled inert gases (argon and helium) on the viability of microbial cells (Diplococcus and Sarcina) are presented. The highest water disinfection was obtained for water samples with Sarcina lutea cells for both used gases under cavitation conditions. Both investigated types of cocci bacteria were destroyed faster under Ar/US-action after comparison of the effectiveness of the gas nature action on the water disinfection.

Hydrothermal preparation of TiO2-Ag nanoparticles and its antimicrobial performance against human pathogenic microbial cells in water

BIOCELL ◽  
2018 ◽  
Vol 42 (3) ◽  
pp. 93-97 ◽  
Author(s):  
Mahmoud MOUSTAFA ◽  
Saad ALAMRI ◽  
Mohamed ELNOUBY ◽  
Tarek TAHA ◽  
M. A. ABU-SAIED ◽  
...  
Keyword(s):  
Ag Nanoparticles ◽  
Hydrothermal Preparation ◽  
Microbial Cells ◽  
Antimicrobial Performance

Rapid Nitrate Reduction Assay with Intact Microbial Cells or Spores

BIO-PROTOCOL ◽  
2014 ◽  
Vol 4 (12) ◽  
Author(s):  
Marco Fischer ◽  
Dörte Falke ◽  
R. Sawers
Keyword(s):  
Nitrate Reduction ◽  
Microbial Cells ◽  
Reduction Assay

Use of propidium monoazide for selective profiling of viable microbial cells during Gouda cheese ripening

2016 ◽  
Vol 228 ◽  
pp. 1-9 ◽  
Author(s):  
Oylum Erkus ◽  
Victor C.L. de Jager ◽  
Renske T.C.M. Geene ◽  
Ingrid van Alen-Boerrigter ◽  
Lucie Hazelwood ◽  
...  
Keyword(s):  
Propidium Monoazide ◽  
Microbial Cells ◽  
Cheese Ripening ◽  
Gouda Cheese

scholarly journals Harnessing the hygroscopic and biofluorescent behaviors of genetically tractable microbial cells to design biohybrid wearables

2017 ◽  
Vol 3 (5) ◽  
pp. e1601984 ◽  
Author(s):  
Wen Wang ◽  
Lining Yao ◽  
Chin-Yi Cheng ◽  
Teng Zhang ◽  
Hiroshi Atsumi ◽  
...  
Keyword(s):  
Microbial Cells

Electrochemical communication between microbial cells and electrodes via osmium redox systems

2012 ◽  
Vol 40 (6) ◽  
pp. 1330-1335 ◽  
Author(s):  
Kamrul Hasan ◽  
Sunil A. Patil ◽  
Dónal Leech ◽  
Cecilia Hägerhäll ◽  
Lo Gorton
Keyword(s):  
Electron Transfer ◽  
Biofuel Cells ◽  
Major Group ◽  
Electrochemical Biosensors ◽  
Bioelectrochemical Systems ◽  
Bacterial Cells ◽  
Redox Systems ◽  
Microbial Cells ◽  
Fundamental Part ◽  
Micro Organisms

Electrochemical communication between micro-organisms and electrodes is the integral and fundamental part of BESs (bioelectrochemical systems). The immobilization of bacterial cells on the electrode and ensuring efficient electron transfer to the electrode via a mediator are decisive features of mediated electrochemical biosensors. Notably, mediator-based systems are essential to extract electrons from the non-exoelectrogens, a major group of microbes in Nature. The advantage of using polymeric mediators over diffusible mediators led to the design of osmium redox polymers. Their successful use in enzyme-based biosensors and BFCs (biofuel cells) paved the way for exploring their use in microbial BESs. The present mini-review focuses on osmium-bound redox systems used to date in microbial BESs and their role in shuttling electrons from viable microbial cells to electrodes.

Needle microepiphytes in a Douglas fir canopy: biomass and distribution patterns

1979 ◽  
Vol 57 (9) ◽  
pp. 1000-1007 ◽  
Author(s):  
George C. Carroll
Keyword(s):  
Cell Volume ◽  
Distribution Patterns ◽  
Douglas Fir ◽  
Total Cell ◽  
Microbial Cell ◽  
Microbial Cells ◽  
Cutting Out ◽  
Total Cell Volume ◽  
Volume Estimates ◽  
Cell Volumes

Distribution patterns and total cell-volume estimates for needle microepiphytes are presented for three strata in the canopy of a single old-growth Douglas fir tree. Microbial cell volume was estimated by photographing transverse sections of needles, tracing microbial profiles on Mylar film, cutting out the tracings, and determining the pooled trace weights from various zones of each needle section. Microbial cells are concentrated in the midrib groove and over the stomatal zones of individual needles. Microbial cell volume on the upper needle surfaces increases during the 1st year and declines in subsequent years. Cell volumes on the lower needle surfaces increase from the 1st to the 3rd year and decrease from the 3rd to the 4th year. An increase in microbial cell volume occurs on both upper and lower surfaces from year 7 to year 8. Total microbial cell volume in relation to available needle surface area is greatest in the lower canopy and decreases with increasing height in the canopy. The total volume of microbial cells on needles was estimated to be 1093 cm3 for the entire tree.

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