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Saturday, July 18, 2020 | History

3 edition of Microscopic pathology attending exposure of guinea pigs to vapors of ethyl bromide found in the catalog.

Microscopic pathology attending exposure of guinea pigs to vapors of ethyl bromide

Charles Paul Waite

Microscopic pathology attending exposure of guinea pigs to vapors of ethyl bromide

by Charles Paul Waite

  • 12 Want to read
  • 10 Currently reading

Published by U.S. Govt. print. off. in Washington .
Written in English

    Subjects:
  • Ethyl bromide,
  • Guinea pigs

  • Edition Notes

    Other titlesGuinea pigs exposed to ethyl bromide.
    Statementby C.P. Waite, acting assistant surgeon, United States Public health service and W.P. Yant, supervising chemist, Health laboratory section, United States Bureau of mines experiment station, Pittsburgh, Pa. ...
    ContributionsYant, W. P. 1894- joint author., U.S. Public Health Service.
    Classifications
    LC ClassificationsRA1247.E68 W3
    The Physical Object
    Pagination1 p. l., 6p.
    ID Numbers
    Open LibraryOL6721259M
    LC Control Number28026840
    OCLC/WorldCa19769621

    Ethyl maltol and iron complexes are products of ethyl maltol and the iron found in the cooking pots used to prepare the Chinese dish, hot-pot. Because their safety is undocumented, the toxicity study of ethyl maltol and iron complexes was conducted in male and female Kunming (KM) mice. The animal study was designed based on the preliminary study conducted to determine the median lethal dose Cited by: 2. maintained at temperature of 26±3°C and r.h. of 70±5%. using standard. Standard curve for ethyl formate was While dosing the sylinder of ethyl formate was placed obtained for concentration from to ppm. EF in in the fume cupboard. After passing through the .

    Haemophilus parasuis is normally isolated from the nasal cavity, tonsils, and trachea of healthy pigs. 1,2 This organism can potentially invade the host and cause severe systemic infection characterized by fibrinous polyserositis, arthritis, and meningitis. The factors involved in systemic invasion by H parasuis have not been clearly defined. 3 The potential interaction between H parasuis and Cited by: 5 Methyl Bromide 1 Acute Exposure Guideline Levels. PREFACE. Under the authority of the Federal Advisory Committee Act (FACA) P.L. of , the National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances (NAC/AEGL Committee) has been established to identify, review, and interpret relevant toxicologic and other scientific data and develop AEGLs for high.

    Formaldehyde exposure in the OR: one nurse's experience. From the Massachusetts Nurse Newsletter January/February Edition. By Evelyn Bain, M Ed, RN, COHN-S Associate Director/Coordinator, Health & Safety. This article is part of a continuing series . Inhalation Guinea-pig and rabbit Mouse The hydrobromic acid reacts with the methanol to yield methyl bromide (Ethyl Corporation, Personal communication to the IPCS, ). be applied by skilled operators, and, in some instances, requires multi-day aeration periods to reduce methyl bromide exposure to levels safe for.


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Microscopic pathology attending exposure of guinea pigs to vapors of ethyl bromide by Charles Paul Waite Download PDF EPUB FB2

A careful study of the microscopic pathology in guinea pigs after exposure to vapors of ethly bromide reveals certain characteristic changes in the tissues which cani be correlated with the conditions of exposures as regards the concentration of vapors and the period of.

An investigation is reported in which guineapigs were exposed for varying periods to varying concentrations of vapour of ethyl bromide. High concentrations, varying from 18 to 6 per cent.

in the air, breathed, of course, for a short period, produced acute congestion and oedema in the lungs. The animals that survived appeared to recover by: 2. 5. Sayers R, Yant WP []. Physiological response attending exposure to vapors of methyl bromide, methyl chloride, ethyl bromide, and ethyl chloride.

Washington, DC: U.S. Government Printing Office, Treasury Department, US Public Health Service, Public Health Bulletin 6. von Oettingen WF []. The volatile substances studied are used as refrigerants domestically and, owing to leakages, may become hazards. Guineapigs were exposed in a chamber charged with known amounts of vapour for single periods only, varying from 5 minutes to 15 hours.

The symptoms exhibited with all the compounds were somewhat similar. There occurred weakness with convulsive and laboured breathing at low Cited by: 5.

Sarin vapor also increases prostaglandin and eosinophil levels in the bronchoalveolar lavage of guinea pigs (Levy et al., ). Soman increases inducible cyclooxygenase-2 (COX-2) expression in. Under the authority of the Federal Advisory Committee Act (FACA) P.L.

ofthe National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances (NAC/AEGL Committee) has been established to identify, review, and interpret relevant toxicologic and other scientific data and develop AEGLs for high-priority, acutely toxic : Division on Earth.

Inhalation exposure to HD vapor caused a dose-dependent decrease in body weight during the first week following exposure as demonstrated in Fig. 3.A correlation of r was found between the HD concentration and the decrease in body weight 48 h post exposure (Fig.

3 insert). GPs exposed to Ct of μg × min/l (for 10 min) showed no change in body weight while those exposed to Ct of Cited by: Biological Effects of Short-Term, High-Concentration Exposureto Methyl Isocyanate. Morphologic Evaluation of Rat and Guinea Pig Lungs by Edward H. Fowler,* Darol E.

Dodd,* and Catherine M. Troup* Themorphologic changes inducedin the lungs ofrats andguineapigs exposed to highconcentrations ofMICvapor (,and ppmin the rat and Exp.

Path., Bd. 14, S. () Department of Clinical Chemistry, Institute of Pharmacodynamics and Medical Analytics (Head: Ass. Prof. DRozDz, M. D.) and Department of Cytology and Histology, Institute of Biology and Morphology (Head: Prof.

JONEK, M. D.) Silesi:tn Medic:tl School, Iof the skin of guinea pigs after Author: M. Dróżdż, E. Kucharz, M. Kamiński. Start studying Minot MicroB Learn vocabulary, terms, and more with flashcards, games, and other study tools. Natural history study.

(i) Animals and treatments. Forty-one guinea pigs (20 males and 21 females) were randomly assigned to nine treatment groups as outlined in Table these, 37 animals (18 males and 19 females) were exposed via the aerosol route to a target dose of LD 50 of B.

anthracis spores. Nine of the challenged animals (four males and five females) received a surgically Cited by: Full text of "American Year-Book of Anesthesia and Analgesics" See other formats. Full text of "A Text Book of Organic Chemistry" See other formats. 1-Bromopropane is a colorless liquid.

Commercial 1-bromopropane includes not only 1-bromopropane, but also additives that improve its performance in the desired application and stabilizers to inhibit decomposition. 1-Bromopropane was originally used in the production of pesticides, flavors and fragrances, pharmaceuticals, and other chemicals.

Male Hartley-guinea-pigs were exposed to ethylene-dibromide (EDB) () as a single intraperitoneal injection of 30 milligrams/kilogram (mg/kg) body weight in order to determine EDB tissue distribution. The animals were sacrificed at 4, 8, 12, 24, 48, or 72 hours following exposure. Everyday, we come into contact with many relatively harmless substances that could, at certain concentrations, be toxic.

This applies not only to obvious candidates such as asbestos, lead, and gasoline, but also to compounds such as caffeine and headache tablets. While the field of toxicology has nu. Join the Chemical Watch for free. Questions asked about smoke toxicity study. But lead researcher stands by Chemosphere paper.

THE ALUMNI JOURNAL. The corresponding iodine comp. Tetrachlor-methane or form. tetra chloride CCl^ a liquid, is lene-hydrate the following halogen products: Mono-chIor-etha7ie or ethyl chloride Co H5CI, an ethereal owing to its employed as a local benumbing the sense of feel-great volatility anaesthetic, liquid, it is.

Animals' Sayers et al. () evaluated the acute toxicity of monochloroethane to guinea pigs (see Table ). Vapor concentrations of 23 percent (, ppm) for 8 min, percent (, ppm) for 30 min, 8 percent (80, ppm) for 90 min, and 4 percent (40, ppm) for min caused some deaths. Inhalation Toxicity of GF Vapor in Rats as a Function of Exposure Concentration and Duration and Its Potency Comparison to GB [J.

Anthony, Mark V. Haley, James H. Manthei, Ruth A. Way, Dave C. Burnett] on *FREE* shipping on qualifying offers. This is a EDGEWOOD CHEMICAL BIOLOGICAL CENTER ABERDEEN PROVING GROUND MD report procured by the Pentagon and.

Furnishing adequate housing, nutrition, and care will minimize disease in PBPs, as in other species. Many diseases of PBPs are similar to those of domestic commercial swine, although some are more common in PBPs.

Gastritis and gastric foreign bodies are common in PBPs because they are omnivorous and prone to ingest many types of objects.Full text of "Peoria Medical Monthly ()" See other formats.Guinea pigs come in several colors and color combinations, including black, tan, cream, brown, and white.

Guinea pigs' eyes are located on the sides of the head, allowing them to see both forward and backward, although they may have trouble seeing directly ahead.