94,577 research outputs found
Letter, Albion Ames to M. F. Ames, September 3, 1886
No full textLetter from Albion Ames in Starkville, Mississippi, to his brother, M. F. Ames, regarding his crops and various local happenings.https://scholarsjunction.msstate.edu/mss-ames-hogan-papers/1011/thumbnail.jp
Ames d’écoliers
No full textF. Ames d’écoliers. In: La revue pédagogique, tome 35, Juillet-Décembre 1899. pp. 222-229
Planning, design and logistics of a decision analysis study: The FBI/Ames study involving forensic firearms examiners
No full textThis paper describes design and logistical aspects of a decision analysis study to assess the performance of qualified firearms examiners working in accredited laboratories in the United States in terms of accuracy (error rate), repeatability, and reproducibility of decisions involving comparisons of fired bullets and cartridge cases. The purpose of the study was to validate current practice of the forensic discipline of firearms/toolmarks (F/T) examination. It elicited error rate data by counting the number of false positive and false negative conclusions. Preceded by the experimental design, decisions, and logistics described herein, testing was ultimately administered 173 qualified, practicing F/T examiners in public and private crime laboratories. The first round of testing evaluated accuracy, while two subsequent rounds evaluated repeatability and reproducibility of examiner conclusions. This project expands on previous studies by involving many F/T examiners in challenging comparisons and by executing the study in the recommended double-blind format.This article is published as Monson, Keith L., Erich D. Smith, and Stanley J. Bajic. "Planning, design and logistics of a decision analysis study: The FBI/Ames study involving forensic firearms examiners." Forensic Science International: Synergy 4 (2022): 100221.
DOI: 10.1016/j.fsisyn.2022.100221.
Copyright 2022 The Authors.
Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0).
Posted with permission.
DOE Contract Number(s): AC02-07CH11358
Letter, Joe Perry to M. F. Ames, 1893
No full textLetter from Joe Perry in Starkville, Mississippi, to M. F. Ames, asking him to sell a mule.https://scholarsjunction.msstate.edu/mss-ames-hogan-papers/1022/thumbnail.jp
His+ reversions Caused in Salmonella typhimurium by different types of ionizing radiation
No full textThe yield of his+ reversions in the Ames Salmonella tester strain TA2638 has been determined for 60Co γ rays, 140 kV X rays, 5.4 keV characteristic X rays, 2.2 MeV protons, 3.1 MeV α particles, and 18 MeV/U Fe ions. Inactivation studies were performed with the same radiations. For both mutation and inactivation, the maximum effectiveness per unit absorbed dose was obtained for the characteristic X rays, which have a dose averaged linear energy transfer (LET) of roughly 10 keV/μm. The ratio of the effectiveness of this radiation to γ rays was 2 for inactivation and about 1.4 for the his+ reversion. For both end points the effectiveness decreases substantially at high LET, i.e., for the α particles and the Fe ions. The composition of the bottom and the top agar was the one recommended by Maron and Ames [Mutat. Res. 113, 173-215 (1983)] for application in chemical mutagenicity tests. The experiments with the less penetrating radiations differed from the usual protocol by utilization of a technique of plating the bacteria on the surface of the top agar. As in an earlier study [Roos et al., Radiat. Res. 104, 102-108 (1985)] greatly enhanced yields of mutations, relative to the spontaneous reversion rate, were obtained in these experiments by performing the irradiations 6 h after plating, which differs from the conventional procedure to irradiate the bacteria shortly after plating
Henry Semple Ames, 1883
No full textPH Coll 1120.87Henry Semple Ames (1863-1916) was the eldest son of Edgar Ames (1824-1867) and Lucy Virginia Semple Ames (1836-1929). As well as acting as secretary of the Ames Realty Company, he was also president of the St. Louis and Meramec River Railroad Company,
the Ames Steel Lath Company, and Northwestern Expanded Metal Company, and vice president of Bee Line Construction Company and the Mississippi Valley Trust Company.To order a reproduction, inquire about permissions, or for information about prices see:
http://www.lib.washington.edu/specialcollections/services/reproduction/reproduction
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Catherine H. Ames
No full textCatherine Hobart Ames, daughter of Winthrop and Lucy K. (Fuller) Ames, was born in North Easton, Masachusetts, August 15, 1919. She died in an auto accident at Fallon, Nevada, March 19, 1964. Catherine married May 15, 1939, Wyndham Sweyn Gooden. She married, second, in Las Vegas, Nevada in 1947, Tellie Van Orsdel Dickerson. Tellie, son of Silvester and Rose F. (Van Orsdel) Dickerson, was born September 21, 1902. Catherine married, third, in 1960 Arthur Messerly. Children of Wyndham Sweyn and Catherine Hobart (Ames) Gooden: Caroline York Gooden, born April 8, 1940; Alexandra Sandra Gooden, born May 28, 1942. Children of Tellie Van orsdel and Catherine Hobart (Ames) (Gooden) Dickerson: Tellie Ames Dickerson, born July 3, 1948; Catherine Hobart Ames Dickerson, born December 20, 1951; William Ames Dickerson, born November 7, 1953.https://soar.stonehill.edu/frankmortonamesalbum/1025/thumbnail.jp
Cyrtopodium broadwayi Ames 1922
No full text2. Cyrtopodium broadwayi Ames (1922: 51), auct. nom. Type: — TRINIDAD AND TOBAGO. Trinidad: Tanapuna Piarco, Aripo Savannah, 16 April 1908, Broadway 2343 (holotype AMES 66996, isotypes MO 1197930!, SEL 12231!) = Cyrtopodium parviflorum Lindley in Bentham (1843: 672). Type—GUYANA. S.loc., 1839, Schomburgk 617 (lectotype, designated here, K-L!, isolectotypes BM 525879!, BM 923799!, BR 9973220!, G 168578!, G 167579!, G 167580!, P 436943!, W-R 27656). This name was misapplied by O. Ames for specimens of Otostylis brachystalix and Cyrtopodium parviflorum from Trinidad, especially the collection series made by Broadway.Published as part of Thiago E. C. Meneguzzo, José F. A. Baumgratz & Cássio Van Den Berg, 2015, Taxonomic studies in the Aganisia complex (Orchidaceae, Zygopetalinae), pp. 1-39 in Phytotaxa 238 (1) on pages 29-30, DOI: 10.11646/phytotaxa.238.1.1, http://zenodo.org/record/39963
Avaliação do potencial genotóxico de uma mina de urânio abandonada
No full textMestrado em Biologia Molecular e CelularUm dos principais problemas associados a locais contaminados, como áreas
de extracção de minérios metálicos, corresponde à possível contaminação de
águas superficiais e subterrâneas, por escorrência e/ou lixiviamento de
substâncias químicas perigosas (metais, radionuclídeos entre outros) a partir
dos solos contaminados e dos resíduos neles depositados. Tal facto acontece
quando a capacidade de retenção do solo foi largamente afectada pela
actividade de mineração. Deste modo, o presente trabalho, integrado na fase
de rastreio ecotoxicológico dos solos da mina de urânio da Cunha Baixa
(Mangualde, Centro de Portugal), teve como objectivo avaliar a potencial
mobilização de metais e/ou radionuclídeos, com efeitos mutagénicos e
genotóxicos para os recursos de água doce subterrâneos e superficiais da
zona circundante. Para o efeito procedeu-se à obtenção de extractos de solos
com água, numa proporção de 1:10 (m/v), a partir de amostras recolhidas em
dez locais de amostragem, previamente definidos em estudos anteriores. Os
extractos de solo esterilizados foram submetidos ao ensaio de Ames (método
de pré-incubação) com duas estirpes de Salmonella typhimirium his- (TA98 e
TA100), com e sem activação externa do metabolismo, pela fracção de fígado
de rato Sprague Dawley (S9), induzido com Aroclor 1254. De forma a verificar
se a proporção de água, utilizada no processo de extracção, não estava a
condicionar a obtenção de resultados positivos no ensaio de Ames, novas
extracções foram efectuadas, desta vez numa proporção de 1:2 (m/v), e os
extractos não diluídos foram submetidos a novos ensaios com ambas as
estirpes de Salmonella typhimurium. Em todos os ensaios, foram registadas
respostas negativas, o que aparentemente demonstra a ausência de
mobilização de contaminantes com efeitos genotóxicos, a partir dos solos
contaminados existentes na mina da Cunha Baixa. Estes resultados foram
coincidentes com os obtidos em ensaios ecotoxicológicos de extractos de solo,
levados a cabo com dafnídeos e com a bactéria Vibrio fischeri. Contudo, e no
que refere à genotoxicidade, e uma vez que a filtração dos extractos de solo,
um passo fundamental à sua esterilização, pode estar a comprometer a
obtenção de resultados positivos, este ensaio deve ser complementado com
outros que permitam também a avaliação do potencial genotóxico dos solos
desta área mineira.
ABSTRACT: The potential contamination of surface and groundwater resources through
leaching and/or surface runoffs from contaminated soils and wastes is one of
the main problems of metallic ore extraction zones. This happens when the soil
retention function was highly affected by mining activities. Hence, the main
objective of this study, integrated in the ecotoxicological screening of soils from
the Cunha Baixa uranium mine area (Mangualde, Center of Portugal) was to
assess the potential mobilization of metals and/or radionuclides with mutagenic
and genotoxic effects to underground and surface freshwater resources. To
meet this purpose, soil samples were collected in 10 sampling sites selected on
previous studies and extracts with water were obtained for a proportion 1:10
(m/v). Sterilized soil extracts were evaluated through the Ames bioassay with
two strains of Salmonella typhimirium his- -TA98 and TA100-(following the
methodology of the pre-incubation assay) with and without metabolic activation
by the liver S9 fraction obtained from Sprague Dawley rats induced by Aroclor
1254. In order to test if the fraction of water considered to obtain soil extracts
was not preventing positive results, new extracts were obtained with water (1:2,
m/v) and tested again with both strains of Salmonella typhimurium. Negative
results were recorded in all the assays suggesting that no mobilization of
chemicals, with mutagenic and genotoxic effects, is occurring from Cunha
Baixa contaminated soils. These results were coincident with those recorded in
ecotoxicological assays with daphnids and the bacteria Vibrio fischeri for soil
extracts. Nevertheless, since filtration (a crucial step to guarantee extracts
sterilization) can has compromised the occurrence of positive results in the
Ames assays performed, this data should be reinforced with other developed
assays to assess the potential genotoxicity of soils from this mining area
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