scholarly journals The LDH virus: an interfering biological contaminant

Science ◽  
1978 ◽  
Vol 200 (4338) ◽  
pp. 124-126 ◽  
Author(s):  
V Riley ◽  
D. Spackman ◽  
G. Santisteban ◽  
G Dalldorf ◽  
I Hellstrom ◽  
...  
Keyword(s):  
Biological Contaminant

scholarly journals Design and Performance of Novel Self-Cleaning g-C3N4/PMMA/PUR Membranes

Polymers ◽  
2020 ◽  
Vol 12 (4) ◽  
pp. 850 ◽  
Author(s):  
Ladislav Svoboda ◽  
Nadia Licciardello ◽  
Richard Dvorský ◽  
Jiří Bednář ◽  
Jiří Henych ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Thin Layers ◽  
Photocatalytic Reaction ◽  
Potential Toxicity ◽  
Material Loss ◽  
Contaminant Control ◽  
Biological Contaminant ◽  
Self Cleaning ◽  
And Performance ◽  
Photocatalytic Applications

In the majority of photocatalytic applications, the photocatalyst is dispersed as a suspension of nanoparticles. The suspension provides a higher surface for the photocatalytic reaction in respect to immobilized photocatalysts. However, this implies that recovery of the particles by filtration or centrifugation is needed to collect and regenerate the photocatalyst. This complicates the regeneration process and, at the same time, leads to material loss and potential toxicity. In this work, a new nanofibrous membrane, g-C3N4/PMMA/PUR, was prepared by the fixation of exfoliated g-C3N4 to polyurethane nanofibers using thin layers of poly(methyl methacrylate) (PMMA). The optimal amount of PMMA was determined by measuring the adsorption and photocatalytic properties of g-C3N4/PMMA/PUR membranes (with a different PMMA content) in an aqueous solution of methylene blue. It was found that the prepared membranes were able to effectively adsorb and decompose methylene blue. On top of that, the membranes evinced a self-cleaning behavior, showing no coloration on their surfaces after contact with methylene blue, unlike in the case of unmodified fabric. After further treatment with H2O2, no decrease in photocatalytic activity was observed, indicating that the prepared membrane can also be easily regenerated. This study promises possibilities for the production of photocatalytic membranes and fabrics for both chemical and biological contaminant control.

Chemical/biological contaminant detector for aqueous environments: preliminary report

2002 ◽  
Author(s):  
R. McGowan ◽  
J. Foerster ◽  
D. Huynh ◽  
R. Lindenmuth ◽  
T. Lukaszek ◽  
...  
Keyword(s):  
Preliminary Report ◽  
Aqueous Environments ◽  
Biological Contaminant

Study on biological contaminant control strategies under different ventilation models in hospital operating room

2008 ◽  
Vol 43 (5) ◽  
pp. 793-803 ◽  
Author(s):  
Zhang Rui ◽  
Tu Guangbei ◽  
Ling Jihong
Keyword(s):  
Operating Room ◽  
Control Strategies ◽  
Contaminant Control ◽  
Biological Contaminant

17. Occupational Asthma Investigation: Biological Contaminant Sampling

1999 ◽  
Author(s):  
J.M. Panko
Keyword(s):  
Occupational Asthma ◽  
Biological Contaminant

scholarly journals The cleaning and disinfection by heat of bedpans in automatic and semi-automatic machines

1976 ◽  
Vol 76 (3) ◽  
pp. 341-348 ◽  
Author(s):  
A. B. M. G. Mostafa ◽  
K. F. Chackett
Keyword(s):  
Stainless Steel ◽  
Human Serum Albumin ◽  
Serum Albumin ◽  
Human Serum ◽  
General Hospital ◽  
Test Machine ◽  
Streptococcus Faecalis ◽  
Technetium 99M ◽  
Biological Contaminant ◽  
Cleaning And Disinfection

SUMMARYThis work is concerned with the cleaning and disinfection by heat of stainless-steel and polypropylene bedpans, which had been soiled with either a biological contaminant, human serum albumin (HSA) labelled with technetium-99m 99m(Tc), or a bacteriological contaminant, streptococcus faecalis mixed with Tc-labelled HSA. Results of cleaning and disinfection achieved with a Test Machine and those achieved by procedures adopted in eight different wards of a general hospital are reported. Bedpan washers installed in wards were found to be less efficient than the Test Machine, at least partly because of inadequate maintenance. Stainless-steel and polypropylene bedpans gave essentially the same results.

Adaptive monitoring to enhance water sensor capabilities for chemical and biological contaminant detection in drinking water systems

2006 ◽  
Author(s):  
Y. Jeffrey Yang ◽  
Roy C. Haught ◽  
John Hall ◽  
James A. Goodrich ◽  
Jafrul Hasan
Keyword(s):  
Drinking Water ◽  
Water Systems ◽  
Contaminant Detection ◽  
Adaptive Monitoring ◽  
Water Sensor ◽  
Biological Contaminant ◽  
Drinking Water Systems

Levels and identities of nonrhizobial microorganisms found in commercial legume inoculant made with nonsterile peat carrier

1996 ◽  
Vol 42 (1) ◽  
pp. 72-75 ◽  
Author(s):  
Perry E. Olsen ◽  
Wendell A. Rice ◽  
Lucien M. Bordeleau ◽  
A. H. Demidoff ◽  
Mandy M. Collins
Keyword(s):  
Pseudomonas Aeruginosa ◽  
Klebsiella Pneumoniae ◽  
North American ◽  
Enterobacter Cloacae ◽  
Xanthomonas Maltophilia ◽  
Biological Contaminant ◽  
Contaminant Load ◽  
Legume Inoculants

Sixty samples of commercial North American legume inoculants manufactured for sale in 1994 using nonsterile peat as carrier were tested for Rhizobium (or Bradyrhizobium) content and nonRhizobium biological contaminant load. Products of three major producers of such inoculants for sale in Canada were examined. Viable Rhizobium content varied from 5.6 × 105 to 8.1 × 109 cells/g, while the contaminant load varied from 1.8 × 108 to 5.5 × 1010 cfu/g. Most of the inoculants contained more nonrhizobial organisms than they did rhizobia. Identifications were made of the most numerous nonrhizobial bacteria occurring in 100 samples of inoculants collected in 1993 and 1994. The most commonly identified contaminant was Xanthomonas maltophilia. Pseudomonas aeruginosa, Klebsiella pneumoniae, and Enterobacter cloacae were also found at high levels in some products. Contaminant organisms capable of inhibiting rhizobial growth in plate culture were found in the products of all three manufacturers.Key words: Rhizobium, contaminant, inoculant.

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