FILTER PAPER DISC METHOD OF COLLECTING WHOLE BLOOD FOR SEROLOGIC STUDIES IN CHILDREN12

1966 ◽  
Vol 84 (1) ◽  
pp. 74-80 ◽  
Author(s):  
JAMES CHIN ◽  
NATHALIE J. SCHMIDT ◽  
EDWIN H. LENNETTE ◽  
MAUREEN HANAHOE
Keyword(s):  
Filter Paper ◽  
Whole Blood ◽  
Filter Paper Disc ◽  
Paper Disc

scholarly journals Dissemination of Aerosol and Splatter in Clinical Environment during Cavity Preparation: An In Vitro Study

2021 ◽  
Vol 18 (7) ◽  
pp. 3773
Author(s):  
Muhammad Adeel Ahmed ◽  
Rizwan Jouhar
Keyword(s):  
Health Care Workers ◽  
Filter Paper ◽  
High Volume ◽  
Dental Practice ◽  
Cavity Preparation ◽  
Class V ◽  
Filter Paper Disc ◽  
Care Workers ◽  
Significant Difference ◽  
Paper Disc

Dental health care workers around the world are in a constant state of fear and anxiety because they work in a constrained space of the dental practice. During routine dental procedures, they are exposed to aerosol and splatter. These airborne particles pose a great risk of transmitting contagious infections to health care workers and patients, especially in an era of social distancing due to COVID-19. The current study was conducted to evaluate contamination amount, duration, the distance of aerosol, and splatter produced after cavity preparation using a two-hole and four-hole handpiece. The study was performed on a dental manikin in a dental simulation laboratory at the College of Dentistry, King Faisal University Al Ahsa. The dental manikin was set to a reclined position to simulate the clinical operatory position of the patient for dental restorative procedures. Aerosol and splatter were collected on Grade 1 qualitative cotton cellulose filter paper. These were placed on adhesive tape extending from the headrest of the dental manikin in six different directions (2, 4, 6, 8, 10, and 12 o’clock) for up to 60 inches and on certain positions of the operator and assistant such as the chest, head, forearms, upper leg, and inside facemask. Class V cavity preparation was done by the principal investigator at a specific time of 3 min on tooth #11 using a two-hole high-speed handpiece, then on the next day, Class V cavity preparation was performed on tooth #21 by a four-hole handpiece. High volume suction was used throughout the cavity preparation. Immediately after cavity preparation, the first filter paper disc was replaced with new ones in all positions. The second set of filter papers was removed after 30 min. Transparent grids were used to count the contamination area on the filter paper disc. No statistically significant difference was found in the mean amount of aerosol and splatter produced by both handpieces, however, a statistically significant difference was found in an amount of aerosol and splatter produced at a 12, 24, and 36 inches distance immediately after cavity preparation and 30 min after cavity preparation, regardless of the type of handpiece used. It is advisable to refrain from removing the personal protective barriers immediately after the procedure within the vicinity of the dental practice. The use of other adjuncts such as high volume suction to reduce the spread of aerosol and splatter is also recommended.

Filter Paper Disc Modification of the Oxford Cup Penicillin Determination.

1944 ◽  
Vol 55 (3) ◽  
pp. 162-164 ◽  
Author(s):  
J. G. Vincent ◽  
H. W. Vincent ◽  
J. Morton
Keyword(s):  
Filter Paper ◽  
Filter Paper Disc ◽  
Paper Disc

Use of a Disc-Assay System to Detect Oxytetracycline Residues in Honey

1986 ◽  
Vol 49 (6) ◽  
pp. 436-441 ◽  
Author(s):  
LAWRENCE A. ROTH ◽  
SUET KWAN ◽  
PETER SPORNS
Keyword(s):  
Hydrogen Peroxide ◽  
Bacillus Cereus ◽  
Filter Paper ◽  
Phosphate Buffer ◽  
Assay System ◽  
Filter Paper Disc ◽  
Natural Inhibitor ◽  
Osmotic Effects ◽  
Paper Disc ◽  
Disc Assay

A simple inexpensive disc-assay system for detection of oxytetracycline (OTC) in honey was developed. This bioassay involved diluting honey 1:1 (wt/wt) with 0.1 M phosphate buffer, pH 7.0, and applying 90 μl of this solution to a 0.5-in (12.7-mm) filter paper disc placed on Bacillus cereus-inoculated media. This test detected about 0.2 μg OTC/ml (0.4 μg OTC/g honey) without interference from natural antibacterial inhibitors in honey. It was also shown that a variety of materials contributed to the natural inhibitor effect in honey, including materials other than glucose oxidase-derived hydrogen peroxide and the osmotic effects of sugar.

Flavanes from Dracaena cambodiana

2008 ◽  
Vol 63 (12) ◽  
pp. 1407-1410 ◽  
Author(s):  
Jian Liu ◽  
Hao-Fu Dai ◽  
Jiao Wu ◽  
Yan-Bo Zeng ◽  
Wen-Li Mei
Keyword(s):  
Filter Paper ◽  
2D Nmr ◽  
Antimicrobial Activities ◽  
Diffusion Method ◽  
Spectroscopic Techniques ◽  
Filter Paper Disc ◽  
Agar Diffusion ◽  
Dracaena Cambodiana ◽  
Agar Diffusion Method ◽  
Paper Disc

Two new flavanes, (2S)-4′ ,7-dihydroxy-6,8-dimethylflavane (1), and (2S)-5,7-dihydroxy-4′-methoxy- 8-methylflavane (2), together with five known flavanes, (2S)-3′ ,7-dihydroxy-4′-methoxy-8- methylflavane (3), (2R)-4′,7-dihydroxy-8-methylflavane (4), (±)-3′,7-dihydroxy-4′-methoxyflavane (5), (±)-4′,7-dihydroxy-3′-methoxyflavane (6), and (2S)-4′,7-dihydroxyflavane (7), were isolated from the stem of Dracaena cambodiana. Their structures were determined by spectroscopic techniques (UV, IR, 1D and 2D NMR). Their antimicrobial activities were preliminarily examined by the filter paper disc agar diffusion method.

Evaluation of electrogustometry and the filter paper disc method for taste assessment

2011 ◽  
Vol 131 (5) ◽  
pp. 488-493 ◽  
Author(s):  
Katarina Berling ◽  
Johan Knutsson ◽  
Andreas Rosenblad ◽  
Magnus von Unge
Keyword(s):  
Filter Paper ◽  
Filter Paper Disc ◽  
Taste Assessment ◽  
Paper Disc

scholarly journals Bacteriological evaluation of wounds in seriously burned hospitalized patients

1991 ◽  
Vol 24 (3) ◽  
pp. 163-168 ◽  
Author(s):  
Sueli de Lourdes Nogueira Vilela Silva ◽  
Oswaldo Gontijo Macedo ◽  
Carlos Américo Veiga Damasceno ◽  
Maria Auxiliadora Roque de Carvalho ◽  
Eduardo Osório Cisalpino
Keyword(s):  
Staphylococcus Aureus ◽  
Pseudomonas Aeruginosa ◽  
Filter Paper ◽  
Staphylococcus Epidermidis ◽  
Filter Paper Disc ◽  
Qualitative And Quantitative ◽  
Environmental Unit ◽  
Belo Horizonte ◽  
Bacteriological Evaluation ◽  
Paper Disc

During the period between May and December 1988, 21 patients were studied bacteriologically at Hospital João XXIII's burn's unit which belongs to "Fundação Hospitalar do Estado de Minas Gerais" in Belo Horizonte, Brazil. A qualitative and quantitative evaluation of aerobic and facultative bacteria from burn wounds was carried out by the standard filter paper disc technique, including antibiotic susceptibility. At the same time an evaluation of those bacteria isolated from the environmental unit was performed. The most common organisms recovered from wounds of patients were: Pseudomonas aeruginosa, Staphylococcus aureus, and Staphylococcus epidermidis. P. pseudomallei was the most frequent strain recovered from environmental specimens. In nearly all patients specimens (16 in total) from whom P. aeruginosa was isolated, the rate of CFU/cm² of skin was above 10². In nine of these, it reached 10(5), wich is equivalent to 10(7) CFU/g of burned tissue.

Sign in / Sign up

Export Citation Format

Share Document