Relevant bibliographies by topics / Biological indicator

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Academic literature on the topic 'Biological indicator'

Author: Grafiati
Published: 4 June 2021
Last updated: 13 June 2025

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Journal articles on the topic "Biological indicator"

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Rutala, William A., Suzanne M. Jones, and David J. Weber. "Comparison of a Rapid Readout Biological Indicator for Steam Sterilization With Four Conventional Biological Indicators and Five Chemical Indicators." Infection Control & Hospital Epidemiology 17, no. 7 (1996): 423–28. http://dx.doi.org/10.1017/s0195941700006810.

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AbstractObjective:In this study, we compare a new biological indicator that provides results within 3 hours with four conventional, 48-hour biological indicators and five chemical indicators.Design:Biological indicators tested included the conventional Attest 1262, Proof Plus, Assert, and Biosign, and the new Attest 1292 Rapid Readout biological indicator. Chemical indicators tested included Comply, Propper, Chemdi, Sterigage, and Thermalog S. Spore survival following 121°C in a gravity displacement sterilizer was measured by media color change after incubation for 24 and 48 hours at 56°C for the conventional biological indicators, fluorescence at 3 hours for the Attest 1292 Rapid Readout biological indicator, and color change for the chemical indicators. Each exposure time was replicated 12 times with five samples of each indicator per run (ie, 60 replicates per indicator).Results:At 48 hours, the conventional biological indicators Attest 1262, Proof Plus, Assert, and Biosign showed 100%, 95%, 88%, and 93% spore survival at 5 minutes' exposure; 0%, 0%, 0%, and 8% at 10 minutes; and all showed 0% survival at 15 minutes' exposure. Following a 3hour incubation, the Attest 1292 Rapid Readout biological indicator showed fluorescence at 100%, 72%, and 0% at 5, 10, and 15 minutes, respectively. The chemical indicators Comply, Propper, Chemdi, Sterigage, and Thermalog S revealed sterilization failure rates of 100%, 100%, 100%, 100%, and 100% at 5 minutes' exposure; 0%, 0%, 0%, 92%, and 100% at 10 minutes; and, 0%, 0%, 0%, 3%, and 27% at 15 minutes' exposure, respectively.Conclusions:The sensitivity of the Attest 1292 Rapid Readout biological indicator parallels that of conventional biological indicators. These data suggest that a 3hour rapid readout biological indicator is equivalent to a standard 48-hour biological indicator. Some chemical indicators (eg, Thermalog S) failed to indicate adequate sterilization at 15 minutes' exposure. These chemical indicators have the potential of causing unnecessary recall of adequately sterilized items.
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Rutala, William A., Maria F. Gergen, and David J. Weber. "Evaluation of a Rapid Readout Biological Indicator for Flash Sterilization with Three Biological Indicators and Three Chemical Indicators." Infection Control & Hospital Epidemiology 14, no. 7 (1993): 390–94. http://dx.doi.org/10.1086/646767.

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AbstractObjective:Flash sterilization is most commonly used for emergency sterilization of unwrapped items in a gravity displacement sterilizer for three minutes. Sterilization quality assurance is monitored by biological indicators that require a 24-hour incubation prior to reading. In this study, we compared a new biological indicator that provides results within 60 minutes with three conventional, 24-hour biological indicators for monitoring flash sterilization and three chemical indicators.Design:Conventional biological indicators tested included the conventional Attest 1261, Proof Flash and Assert, while the rapid readout indicator tested was Attest 1291. Attest Rapid Readout detects the presence of aBacillus stearothermophilusenzyme by reading a fluorescent product that is produced by the enzymatic break-down of a nonfluorescent substrate. Chemical indicators tested included Comply, Incheque, and Thermalog S. Survival at 132°C in a gravity displacement sterilizer was measured by media color change after incubation for 24 hours at 56°C for the three conventional biological indicators, fluorescence at 60 minutes for the Attest Rapid Readout biological indicator, and color change for the chemical indicators. Each exposure time was replicated four times with 10 of each biological and chemical indicator per run.Results:The conventional biological indicators (Attest, Proof Flash, and Assert) had 90%, 48%, and 40% spore survival at two minutes exposure; 23%, 3%, and 0% at three minutes exposure; and 3%, 0%, and 0% at four minutes exposure respectively. The Attest Rapid Readout biological indicator had 88%, 33%, and 0% enzyme activity detectable at 2, 3, and 4 minutes exposure. The chemical indicators Comply, Incheque, and Thermalog S revealed sterilization failure rates of 100%, 100%, and 100% at 0 minutes exposure; 100%, 100%, and 45% at one minute; 0%, 0%, and 28% at two minutes exposure; 0%, 0%, and 18% at three minutes exposure; and 0%, 0%, and 0% at four minutes exposure, respectively.Conclusion:The sensitivity of the Attest Rapid Readout parallels the conventional biological indicators. These data suggest that a 60-minute rapid readout biological indicator is equivalent to the 24-hour biological indicators. If further studies demonstrate that a four-minute flash sterilization cycle provides a needed safety margin to ensure sterilization, then consideration should be given to requiring a four-minute flash sterilization cycle. Chemical indicators were too sensitive to the processing conditions (eg, steam) and are inadequate to ensure adequate sterilization.
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Rutala, William A., Maria F. Gergen, and David J. Weber. "Evaluation of a Rapid Readout Biological Indicator for Flash Sterilization with Three Biological Indicators and Three Chemical Indicators." Infection Control and Hospital Epidemiology 14, no. 7 (1993): 390–94. http://dx.doi.org/10.2307/30148321.

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SHOUP, ANITA JO. "Evaluation of a rapid readout biological indicator for flash sterilization with three biological indicators and three chemical indicators." AORN Journal 59, no. 2 (1994): 523–25. http://dx.doi.org/10.1016/s0001-2092(07)70421-0.

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Rutala, William A., Suzanne M. Jones, and David J. Weber. "Comparison of a Rapid Readout Biological Indicator for Steam Sterilization with Four Conventional Biological Indicators and Five Chemical Indicators." Infection Control and Hospital Epidemiology 17, no. 7 (1996): 423–28. http://dx.doi.org/10.2307/30141151.

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Belkin, Nathan L., William A. Rutala, and David J. Weber. "Comparison of a Rapid Readout Biological Indicator for Steam Sterilization with Four Conventional Biological Indicators and Five Chemical Indicators." Infection Control and Hospital Epidemiology 17, no. 12 (1996): 773. http://dx.doi.org/10.2307/30141166.

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Belkin, Nathan L., William A. Rutala, and David J. Weber. "Comparison of a Rapid Readout Biological Indicator for Steam Sterilization with Four Conventional Biological Indicators and Five Chemical Indicators." Infection Control and Hospital Epidemiology 17, no. 12 (1996): 773. http://dx.doi.org/10.1086/647232.

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Rutala, William A., Suzanne M. Jones, and David J. Weber. "Comparison of a Rapid Readout Biological Indicator for Steam Sterilization with Four Conventional Biological Indicators and Five Chemical Indicators." Infection Control and Hospital Epidemiology 17, no. 7 (1996): 423–28. http://dx.doi.org/10.1086/647333.

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Belkin, Nathan L. "Comparison of a Rapid Readout Biological Indicator for Steam Sterilization With Four Conventional Biological Indicators and Five Chemical Indicators." Infection Control & Hospital Epidemiology 17, no. 12 (1996): 773. http://dx.doi.org/10.1017/s0195941700003404.

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McGEOCH, MELODIE A., STEVEN L. CHOWN, and JESSE M. KALWIJ. "A Global Indicator for Biological Invasion." Conservation Biology 20, no. 6 (2006): 1635–46. http://dx.doi.org/10.1111/j.1523-1739.2006.00579.x.

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Dissertations / Theses on the topic "Biological indicator"

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Major, Robert Hugh. "Reductions of indicator organisms in raw sludge during biological solubilization of metals." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape17/PQDD_0001/MQ33964.pdf.

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Pinto, Terezinha de Jesus Andreoli. "Aspectos fundamentais na validação do monitor biológico para a esterilização por óxido de etileno." Universidade de São Paulo, 1991. http://www.teses.usp.br/teses/disponiveis/9/9139/tde-01042008-115740/.

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Considerando a importância da garantia de esterilidade em produtos médico-hospitalares, e conhecendo a necessidade de controle do processo esterilizante por óxido de etileno através de vários parâmetros dentre eles pelo sensor biológico, este trabalho teve como objetivo a padronização de alguns aspectos importantes do monitor biológico. Esporos de Bacillus subtilis var. niger foram obtidos em meios sólido e líquido sintético de esporulação, assim como adquiridos no comércio nacional, como suspensão. Seguiu-se a inoculação destes sobre suportes de papel, alumínio e plástico, com subsequente acondicionamento em embalagens protetoras, com o que se chegou à preparação dos indicadores biológicos. Foram testados, comparativamente, indicadores biológicos, em suporte de papel, adquiridos no comércio nacional e norte americano. As variáveis consideradas no preparo de monitores biológicos foram: natureza do suporte e da embalagem e dimensão de corpo de prova. Foram preparados 27 grupos de monitores biológicos, sendo 19 em suporte de papel, 4 em alumínio e 4 em plástico, constituindo assim 3 grupos múltiplos. A verificação da influência da natureza do suporte na resistência dos esporos foi através do processamento sub-letal de monitores biológicos, seguido de estudo de letalidade e cálculo dos valores de D. Com relação aos 19 grupos em suporte de papel, apesar da origem diferenciada dos esporos no tocante à fase de esporulação, seja quanto à natureza do meio de cultura, do ciclo ou do laboratório produtor, ou ainda dos bioindicadores de fabricantes distintos, não houve diferença estatisticamente significante na resistência dos esporos ao agente esterilizante. Houve diferença significativa na resistência dos esporos entre suportes de papel e plástico. Com relação à efetividade esterilizante do gás através de embalagens de natureza diferente foram testados monitores biológicos contendo bioindicadores em suporte de papel, após exposição dos mesmos ao ciclo sub-letal. Os valores de D obtidos evidenciaram a compatibilidade de diferentes embalagens com a esterilização por óxido de etileno, desde que respeitada a característica de porosidade. Num grupo adicional de monitores biológicos, utilizando papel como suporte em que a variável foi a dimensão dos corpos de prova o processo esterilizante foi por ciclo industrial seguido de recuperação dos esporos sobreviventes através de inoculação dos suportes em caldo tioglicolato, caldo caseina soja e este adicionado de azul de bromotimol. A capacidade promotora de crescimento destes 3 meios não apresentou diferenças. A eficácia esterilizante foi dependente do tamanho de corpos de prova. A determinação periódica do teor residual de gás nos corpos de prova, bem como a monitoração ambiental industrial indicaram a necessidade e importância da legislação em vigor, devendo haver plena obediência à mesma.<br>This study intended to standardize some of the important elements of biological indicators, taken in consideration the importance of sterility assurance of medical devices and knowing the necessity of Ethilene Oxide sterilization process control throught several parameters, among them the biological sensor. Spores of Bacillus .subtilis var. niger, were produced in chemically defined liquid and solid sporulation media, as well as purchased as suspension from local suppliers. The biological indicators were obtained after being inoculated on paper, aluminum foil and plastic carriers following by wrapping on protective packaging. In parallel biological indicators in paper carriers, purchased from local market and from United States suppliers were also tested. The variables considered on preparation of the biological monitors were: the nature of the carriers and packages used and the dimension of the test specimens. Twenty seven individual groups of biological monitors have been prepared, being 19 on paper carrier, 4 into aluminum foil and 4 into plastic, bringing to 3 multiple groups. The evaluation of the nature of the carrier on the spore resistance was done through the challange of the biological monitors to sub-lethal cycles, followed by lethality study and D value calculation. Within the 19 groups on paper carrier no significant statistical difference was observed in respect to spores resistance to the sterilization agent, in spite of the various sources of the spores, with respect to the sporulation stage, no matter the nature of culture media, the cycle or the generating laboratory, or even bioindicators from distinct manufacturers. There was an significant statistical difference on spores resistance between paper and plastic carriers. In respect to the gas sterilization effectiveness across packages of different nature, biological monitors were tested containing bioindicators in paper carriers, after their exposure to sub-lethal cycles. The D values obtained made patent the compatibility of distinct packages to ethilene oxide sterilization provided the porosity caracteristics are respected. In an additional group of biological, monitors, using paper as carrier and on that the dimension of the test specimens was the variable considered the sterilization process was an industrial cycle, followed by a surviving spores recovery through the carriers inoculation into thioglicolate broth, soybean-casein broth and also the last broth added with bromothymol blue. The growing promoting capacity of those 3 media did not show differences. The sterilization effectiveness was dependent to the dimension of the test specimens. The periodic determination of residual gas content on the test specimens, as well as the industrial environment monitoring denote the need and importance of the legislation in force, being imperative full compliance to the same.
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SILVA, Luciana Maria Herculano da. "Caracterização da matéria orgânica do solo de áreas com diferentes coberturas vegetais no semiárido de Pernambuco." Universidade Federal Rural de Pernambuco, 2016. http://www.tede2.ufrpe.br:8080/tede2/handle/tede2/6551.

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Submitted by Mario BC (mario@bc.ufrpe.br) on 2017-03-07T13:12:05Z No. of bitstreams: 1 Luciana Maria Herculano da Silva.pdf: 1397632 bytes, checksum: cca869a58fb4ebdc78f6d4d8be57f51f (MD5)<br>Made available in DSpace on 2017-03-07T13:12:06Z (GMT). No. of bitstreams: 1 Luciana Maria Herculano da Silva.pdf: 1397632 bytes, checksum: cca869a58fb4ebdc78f6d4d8be57f51f (MD5) Previous issue date: 2016-07-27<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES<br>The evaluation of soil quality is an important tool to monitor their degradation and to sustainable practices implementation, by indicators that can relate to soil quality with agricultural activity. The Caatinga, an exclusively Brazilian biome, has a high degradation rate, resulting of human action in inadequate soil management. The objective was to evaluate changes of chemical and biological indicators of organic matter due to the seasonality in preserved and disturbed areas of Caatinga ecoregions in Pernambuco, as well as qualitative characteristics of soil organic matter in these environments and uses. Three areas were selected: one in Buíque and two in Serra Talhada, in each area were studied two conditions of land use (soil in areas with preserved Caatinga coverage and areas with agricultural use).Soil samples were collected between September/2014 and September/2015, covering dry and rainy seasons in semiarid region. In each use and area, there were collected three composite soil samples at layers 0-5, 5-10 and 10-20 cm. Analysis to chemical and physical soil characterization were carried out in addition to biological analysis of total organic carbon (TOC), labile fractions of oxidizable carbon (LFCO), microbial biomass carbon (MBC), basal soil respiration (BSR), microbial quotient (qMIC), physical fractionation of organic matter (POM), physical fractionation of organic matter associated with mineral (MOM) and chemical fractionation of humic substances (HS).Data were analyzed by T test, at 5% probability. It was observed that all relevant variables are influenced by seasonality, and soil texture to LFCO, MBC and TOC, indicating a greater influence on labile carbon fractions.While the characterization by FTIR set directly related to carbon in MOP fractions with AH and AF, and MOM with humin.<br>A avaliação da qualidade do solo é uma ferramenta importante para monitorar a sua degradação bem como planejar a implantação de práticas sustentáveis, verificada por indicadores que podem relacionar a qualidade do solo com atividade agrícola deste. A Caatinga, um bioma exclusivamente brasileiro, tem um alto índice de degradação, resultado da ação antrópica de manejo inadequado do solo. O objetivo da pesquisa foi de avaliar as alterações dos indicadores químicos e biológicos da matéria orgânica em função da sazonalidade, em áreas preservadas e antropizadas de ecorregiões da Caatinga em Pernambuco, bem como características qualitativas da matéria orgânica do solo nesses ambientes e usos. Para tanto, foram selecionadas três áreas: uma em Buíque e duas em Serra Talhada, em cada área foram estudadas duas condições de uso do solo (solos em áreas com cobertura de Caatinga preservada e áreas com uso agrícola). As coletas foram realizadas entre setembro/2014 e setembro/2015, abrangendo a estações seca e chuvosa dessas áreas no semiárido. Em cada uso, por área, foram coletadas três amostras compostas de solo nas camadas de 0-5, 5-10 e 10-20 cm. Foram realizadas análises de caracterização química e física dos solos, além das análises biológicas de carbono orgânico total (COT), frações lábeis de carbono oxidáveis (FLCO), carbono da biomassa microbiana (CBM), respiração basal do solo (RBS), quociente microbiano (qMIC), fracionamento físico da matéria orgânico (MOP), fracionamento físico da matéria orgânica associada aos minerais (MOM) e fracionamento químico das substâncias húmicas (SH). Os dados foram analisados pelo teste T, ao nível de 5% de probabilidade. Observou-se que todas as variáveis obtidas são influenciadas pela sazonalidade e pela textura do solo para FLCO, CBM e COT, indicando maior influência sobre as frações de carbono lábeis. Enquanto a caracterização por FTIR define relação direta com carbono nas frações de MOP com AH e AF, e MOM com humina.
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Chinyanganya, Farai W. "Studies on potential biological indicator organisms for low temperature steam and formaldehyde (LTSF) sterilization." Thesis, University of Bath, 1989. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.760590.

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Suwiwat, Supaporn. "Versican : regulation, purification, and biological properties of a candidate prognostic indicator for breast cancer /." Title page, table of contents and summary only, 2003. http://web4.library.adelaide.edu.au/theses/09PH/09phs9679.pdf.

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VILAR, Pollyanna Ferreira. "Atributos bioquímicos de um argissolo amarelo cultivado com adubos verde e de um latossolo húmico após aplicação de calcário." Universidade Federal Rural de Pernambuco, 2013. http://www.tede2.ufrpe.br:8080/tede2/handle/tede2/6167.

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Submitted by (edna.saturno@ufrpe.br) on 2016-12-19T16:02:21Z No. of bitstreams: 1 Pollyanna Ferreira Vilar.pdf: 1431346 bytes, checksum: 68f317589bdbf5cbdf6d9efad2a5d4cf (MD5)<br>Made available in DSpace on 2016-12-19T16:02:21Z (GMT). No. of bitstreams: 1 Pollyanna Ferreira Vilar.pdf: 1431346 bytes, checksum: 68f317589bdbf5cbdf6d9efad2a5d4cf (MD5) Previous issue date: 2013-02-28<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES<br>The aim of this study was to evaluate the biochemical changes occurring in an Ultisol planted with green manure and an Oxisol Humic after liming. In the experiment with green manure was used randomized complete blocks with plot scheme on track with 5 treatments (Crotalaria; Soybean perennial; Guandu dwarf; Calopogonio and spontaneous vegetation) and 4 replications. We performed the chemical, biochemical and biological attributes, identification and quantification of organic acids in soil after application of the treatments. The dwarf pea had the highest dry matter production and green, higher accumulation of N, P, K and C. The perennial soybean showed higher levels of P and K. The sunnhemp higher concentrations of N, and dwarf pea higher C content in its dry mass. Green manures had lower C / N ratio The microbial biomass carbon showed higher value in the treatment dwarf pigeonpea (578.12 mg kg CBM-C-1). The microbial respiration was influenced by the use of perennial legume sunn hemp and soy. The highest levels of total organic carbon were observed in treatments with perennial soybean, calopo and crude. The treatment showed the highest content of water-soluble carbon was the dwarf pigeonpea (109.34 mg kg-C 1solo dry). The use of legumes promoted the increased enzyme activity in the soil. Treatment with pigeonpea contributes to higher levels of free light fraction organic matter. Treatment with calopo was what had higher C content in fraction F4, corresponding to 34% of TOC. BMI was higher in the soil with cultivation of pigeonpea dwarf, demonstrating that this legume plant residue promoted the maintenance of carbon stocks. In all treatments was observed only the presence of acetic acid, with the highest concentration in the soil after cultivation of perennial soybean. In the experiment with dystrophic experimental design used was completely randomized block in a 2x5 factorial arrangement with four replications, with the first factor represented by the SC treatments (without liming) and CC (with lime application), and the second factor 5 evaluation periods (7, 14, 30, 45 and 60 days). The liming treatments CC was 3.35 t ha-1. We performed the chemical, biological attributes, identification and quantification of organic acids in soil after application of the treatments. Liming increased soil pH and calcium, in addition to reducing the potential acidity of the soil. The phosphorus content was higher 30 days after the application of limestone (3.50 mg kg-1). The highest levels of sodium were observed within 60 days in treatments with and without liming. The higher nitrogen content was obtained 45 days after lime application. The content of the microbial biomass was higher at 7 days in the ground where there was liming with 383.68 mg C kg-CBM-1. The largest amount of total organic carbon was observed at 14 days in water without liming. The higher respiratory activity was observed in the soil where no lime application in periods of 30 and 60 days. For treatments with lime application, detected the presence of acetic acid in all periods, with a period of 30 days at the highest concentration, with 16.21 mg kg-1. Only in the period of 7 days in the treatment without lime application was observed the presence of acetic acid.<br>O objetivo do trabalho foi avaliar as alterações bioquímicas ocorridas em um Argissolo Amarelo cultivado com adubos verdes e em um Latossolo Húmico após a aplicação de calcário. No experimento com adubo verde foi utilizado delineamento experimental de blocos ao acaso com esquema de parcela em faixa com 5 tratamentos (Crotalária; Soja perene; Guandu anão; Calopogônio e Vegetação espontânea) e 4 repetições. Foi realizada a caracterização química, atributos biológicos e bioquímicos, identificação e quantificação de ácidos orgânicos no solo após a aplicação dos tratamentos. O guandu anão apresentou as maiores produção de massa seca e verde, maior acumulo de N, P, K e C. A soja perene apresentou maiores teores de P e K. A crotalária apresentou maiores teores de N, e o guandu anão maiores teores de C em sua massa seca. Os adubos verdes apresentaram menor relação C/N. O carbono da biomassa microbiana apresentou maior valor no tratamento com feijão guandu anão (578,12 mg de C-CBM Kg-1). A respiração basal microbiana foi influenciada com a utilização das leguminosas crotalária e soja perene. Os maiores teores de carbono orgânico total foram observados nos tratamentos com soja perene, calopogônio e crotalária. O tratamento que apresentou maior teor de carbono solúvel em água foi o guandu anão (109,34 mg de C Kg -1solo seco). A utilização de leguminosas promoveu o aumento da atividade enzimática no solo. O tratamento com feijão guandu contribui com o maior teor de fração leve livre da matéria orgânica. O tratamento com calopogônio foi o que obteve maior teor de C na fração F4, correspondendo a 34% do COT. O IMC foi maior no solo com cultivo com guandu anão, demonstrando que o resíduo vegetal desta leguminosa promoveu a manutenção dos estoques de carbono. Em todos os tratamentos foi observada apenas a presença do ácido acético, com maior concentração no solo após o cultivo da soja perene. No experimento com Latossolo foi utilizado delineamento experimental em bloco inteiramente casualizado, em esquema fatorial 2x5, com 4 repetições, sendo o primeiro fator representado pelos tratamentos SC (sem aplicação de calcário) e CC (com aplicação de calcário), e o segundo fator os 5 períodos de avaliação (7, 14, 30, 45 e 60 dias). A dose de calcário nos tratamentos CC foi de 3,35 t ha-1. Foi realizada a caracterização química, atributos biológicos, identificação e quantificação de ácidos orgânicos no solo após a aplicação dos tratamentos. A aplicação de calcário aumentou o pH do solo e os teores de cálcio, além de reduzir a acidez potencial do solo. O teor de fósforo foi maior no período de 30 dias após a aplicação de calcário (3,50 mg kg-1). Os maiores teores de sódio foram observados no período de 60 dias, nos tratamentos com e sem a aplicação de calcário. O maior teor de nitrogênio foi obtido aos 45 dias após a aplicação de calcário. O teor do carbono da biomassa microbiana foi maior aos 7 dias no solo onde não houve a aplicação de calcário, com 383,68 mg de C-CBM Kg-1. A maior quantidade de carbono orgânico total foi observada aos 14 dias no tratamento sem aplicação de calcário. A maior atividade respiratória foi observada no solo onde não houve a aplicação de calcário nos períodos de 30 e 60 dias. Para os tratamentos com a aplicação de calcário, foi detectada a presença do ácido acético em todos os períodos avaliados, apresentando o período de 30 dias a maior concentração, com 16,21 mg kg-1. Apenas no período de 7 dias no tratamento sem aplicação de calcário foi observada a presença do ácido acético.
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Fermino, Fabiana Schumacher [UNESP]. "Avaliação sazonal dos efeitos do enriquecimento por N e P sobre o perifíton em represa tropical rasa mesotrófica (Lago das Ninféias, São Paulo)." Universidade Estadual Paulista (UNESP), 2007. http://hdl.handle.net/11449/100673.

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Made available in DSpace on 2014-06-11T19:30:58Z (GMT). No. of bitstreams: 0 Previous issue date: 2007-02-14Bitstream added on 2014-06-13T19:19:49Z : No. of bitstreams: 1 fermino_fs_dr_rcla.pdf: 1579925 bytes, checksum: 9575963e41a7425b9936cc27d8075a47 (MD5)<br>O estudo visou (a) identificar o nutriente limitante ao desenvolvimento do perifiton em escala sazonal no Lago das Ninfeias, (b) avaliar os principais atributos da comunidade indicadores desta limitacao, (c) caracterizar as principais alteracoes estruturais da comunidade de algas perifiticas frente ao enriquecimento artificial por nitrogenio e/ou fosforo e hierarquizar os fatores direcionadores dessas modificacoes. Foram realizados enriquecimentos isolados e combinado por N e P em represa rasa mesotrofica em quatro epocas do ano (primavera, verao, outono e inverno). Quatro tratamentos foram delineados utilizando substrato difusor de nutrientes (copos de poliestireno, preenchidos com solucao Agar e nutrientes . controle: sem adicao de nutrientes; N+: 0,75 M; P+: 0,05 M; NP+: adicao combinada dos dois sais, razao molar N:P = 15). A abertura dos copos foi revestida com malha de 20 um como substrato para o perifiton. Coletas foram realizadas aos 15o, 20o, 25o e 30o dias de colonizacao. A maior variabilidade dos dados limnologicos abioticos foi atribuida ao tipo de tratamento, seguida pela escala anual. A ACP indicou forte associacao entre a adicao de fosforo e, principalmente, adicao combinada com as maiores densidades de algas, clorofila-a e conteudo de fosforo do perifiton. O fosforo foi o nutriente limitante ao longo do ano e, dependendo do atributo, foi considerado como nutriente limitante, limitante primario ou co-limitado pelo nitrogenio. Exceto a massa organica, os demais atributos do perifiton foram bons indicadores da limitacao e a composicao quimica do perifiton foi decisiva na definicao desta limitacao. Foram encontrados 203 taxons, com maior representacao da classe Chlorophyceae. A riqueza especifica variou de 33 a 66 e sofreu maior influencia da epoca do ano.<br>Study aimed at (a) identifying the nutrient limitation to the development of algal periphyton in a seasonal scale at the Ninfeias Reservoir; (b) evaluating the main indicator community attributes of nutrient limitation; and (c) characterizing the main structural modifications underwent by the algal periphytic community caused by the artificial enrichment by nitrogen and/or phosphorus, as well as ranking the driven factors responsible for such modifications. Isolate and combined enrichments were carried out in a shallow, mesotrophic reservoir during four occasions (spring, summer, fall, and winter). Four treatments were designed using diffusing substrate (polystyrene vials filled with agar solution and nutrients . control: no nutrient addition; N+: 0.75 M; P+: 0.05 M; NP+: combined addition of N and P, molar ratio N:P = 15). Vial mouth was covered with a 20 um mesh cloth for periphyton colonization. Samplings were performed on the 15th, 20th, 25th, and 30th colonization days. The greatest abiotic limnological data variation was related to the kind of treatment, followed by the annual scale. PCA indicated a strong association between P and mainly combined P and N addition with the highest algal densities, chlorophyll a, and the P periphyton contents. Phosphorus was the limiting nutrient over the year, and depending on the periphyton attribute, it was either the only limiting nutrient, the primary limiting one, or colimited with N. Except for the organic mass, the remaining periphyton attributes were good nutrient limitation indicators, and periphyton chemical composition was conclusive in defining limitation. Two hundred and three taxa were identified, Chlorophyceae being the dominant algal class. Species richness varied from 33 to 66, being influenced mostly by the time of the year.
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Ellis, Shawn Alfred. "2-ethylhexanol, a potential biological indicator of occupational exposure to the plasticizer di(2-ethylhexyl)phthalate." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp04/mq28742.pdf.

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Albert, Heidemarie. "Studies on the α-glucosidase enzyme of Bacillus stearothermophilus, ATCC 7953, a biological indicator test organism". Thesis, University of Bath, 1995. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.295444.

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Wright, Andrew M. "Selection, production and characterisation of a biological indicator organism for low temperature steam and formaldehyde (LTSF) sterilization." Thesis, University of Bath, 1991. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.279300.

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Books on the topic "Biological indicator"

1

P, Simon Thomas, ed. Biological response signatures: Indicator patterns using aquatic communities. CRC Press, 2003.

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Major, Robert Hugh. Reductions of indicator organisms in raw sludge during biological solubilization of metals. National Library of Canada, 1998.

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Roth, Nancy E., and Wayne S. Davis. Biological indicator variability and stream monitoring program integration: A Maryland case study. Versar, Inc., 2002.

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Francy, Donna S. Effects of receiving-water quality and wastewater treatment on injury, survival, and regrowth of fecal-indicator bacteria and implications for assessment of recreational water quality. U.S. Dept. of the Interior, U.S. Geological Survey, 1996.

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Francy, Donna S. Effects of receiving-water quality and wastewater treatment on injury, survival, and regrowth of fecal-indicator bacteria and implications for assessment of recreational water quality. U.S. Dept. of the Interior, U.S. Geological Survey, 1996.

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C, Pankhurst, Doube B, and Gupta, V.V.S.R., eds. Biological indicators of soil health. CAB International, 1997.

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Francy, Donna S. Effects of receiving-water quality and wastewater treatment on injury, survival, and regrowth of fecal-indicator bacteria and implications for assessment of recreational water quality. U.S. Dept. of the Interior, U.S. Geological Survey, 1996.

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Francy, Donna S. Effects of receiving-water quality and wastewater treatment on injury, survival, and regrowth of fecal-indicator bacteria and implications for assessment of recreational water quality. U.S. Dept. of the Interior, U.S. Geological Survey, 1996.

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Francy, Donna S. Effects of receiving-water quality and wastewater treatment on injury, survival, and regrowth of fecal-indicator bacteria and implications for assessment of recreational water quality. U.S. Dept. of the Interior, U.S. Geological Survey, 1996.

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Francy, Donna S. Effects of receiving-water quality and wastewater treatment on injury, survival, and regrowth of fecal-indicator bacteria and implications for assessment of recreational water quality. U.S. Dept. of the Interior, U.S. Geological Survey, 1996.

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Book chapters on the topic "Biological indicator"

1

Conley, Catharine A. "Biological Indicator." In Encyclopedia of Astrobiology. Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-11274-4_177.

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Conley, Catharine A. "Biological Indicator." In Encyclopedia of Astrobiology. Springer Berlin Heidelberg, 2015. http://dx.doi.org/10.1007/978-3-662-44185-5_177.

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Conley, Catharine A. "Biological Indicator." In Encyclopedia of Astrobiology. Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-642-27833-4_177-2.

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Spry, J. Andy. "Biological Indicator." In Encyclopedia of Astrobiology. Springer Berlin Heidelberg, 2022. http://dx.doi.org/10.1007/978-3-642-27833-4_5577-1.

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Spry, J. Andy. "Biological Indicator." In Encyclopedia of Astrobiology. Springer Berlin Heidelberg, 2023. http://dx.doi.org/10.1007/978-3-662-65093-6_5577.

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Zamora, Alberto, Ana Inés Méndez, and José-Manuel Fernández-Real. "Calprotectin as a Biological Indicator in Nutrition." In Biomarkers in Disease: Methods, Discoveries and Applications. Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-07389-2_24.

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Zamora, Alberto, Ana Inés Méndez, and José-Manuel Fernández-Real. "Calprotectin as a Biological Indicator in Nutrition." In Biomarkers in Disease: Methods, Discoveries and Applications. Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-81304-8_24-1.

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Silvestrini, R. "Cell Kinetics as an Indicator for Prognosis and Therapy." In Breast Cancer: Biological and Clinical Progress. Springer US, 1992. http://dx.doi.org/10.1007/978-1-4615-3494-5_17.

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Grice, Kliti. "δ13C as an Indicator of Palaeoenvironments." In Stable Isotope Techniques in the Study of Biological Processes and Functioning of Ecosystems. Springer Netherlands, 2001. http://dx.doi.org/10.1007/978-94-015-9841-5_12.

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Camargo, Julio A. "The alteration in informative weights of biological species as an ecological indicator of environmental impacts." In Ecological Indicators. Springer US, 1992. http://dx.doi.org/10.1007/978-1-4615-4661-0_56.

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Conference papers on the topic "Biological indicator"

1

van der Tak, Laurens, Aditya Tyagi, Cheri Salas, and Philip Sacco. "Watershed Stressors and Stream Biological Quality Indicator Modeling." In Watershed Management Conference 2005. American Society of Civil Engineers, 2005. http://dx.doi.org/10.1061/40763(178)147.

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Mahazar, Akmal, Mohammad Shuhaimi-Othman, and Ahmad Abas Kutty. "Benthic macroinvertebrate as biological indicator for water quality in Sungai Penchala." In THE 2013 UKM FST POSTGRADUATE COLLOQUIUM: Proceedings of the Universiti Kebangsaan Malaysia, Faculty of Science and Technology 2013 Postgraduate Colloquium. AIP Publishing LLC, 2013. http://dx.doi.org/10.1063/1.4858720.

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"Development and validation of NLRP3 immunochromatography assay as an indicator for Inflammation and Bad Seminal Quality." In 4TH INTERNATIONAL CONFERENCE ON BIOLOGICAL & HEALTH SCIENCES. Cihan University - Erbil, 2022. http://dx.doi.org/10.24086/biohs2022/paper.757.

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GIOVANETTI, MANUELA, Sergio Albertazzi, Elisa Monterastelli, et al. "An Analysis of Ecological Indicators Applied to Agricultural Ecosystems: What to Retain to Shape a Future Indicator for Pollinators <sup>†</sup>." In 1st International Electronic Conference on Biological Diversity, Ecology and Evolution. MDPI, 2021. http://dx.doi.org/10.3390/bdee2021-09476.

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LIU, Xiuli. "A New Indicator to Evaluate by Sector Water Use Efficiency and Its Application." In International Conference on Biological Engineering and Pharmacy 2016 (BEP 2016). Atlantis Press, 2017. http://dx.doi.org/10.2991/bep-16.2017.84.

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ZHANG, Jing-chen, Qiong HE, Zhi-xiu HAO, Jian-wen LUO, and Li-ying XIAO. "A Novel Indicator for Quantitative Assessment of Articular Cartilage Degeneration Using Ultrasound." In 2nd International Conference on Biomedical and Biological Engineering 2017 (BBE 2017). Atlantis Press, 2017. http://dx.doi.org/10.2991/bbe-17.2017.89.

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Yerdessov, Nurbek, and Asset Izdenov. "P-451 Biological age as an indicator of the health state of miners." In 28th International Symposium on Epidemiology in Occupational Health (EPICOH 2021). BMJ Publishing Group Ltd, 2021. http://dx.doi.org/10.1136/oem-2021-epi.334.

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Taha, Kamal, and Paul D. Yoo. "An Effective Disease Risk Indicator Tool." In 2020 42nd Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC) in conjunction with the 43rd Annual Conference of the Canadian Medical and Biological Engineering Society. IEEE, 2020. http://dx.doi.org/10.1109/embc44109.2020.9175994.

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Shim, Youn Young, Timothy Tse, and Martin Reaney. "Biological Activities of Flaxseed Peptides (Linusorbs)." In 2022 AOCS Annual Meeting & Expo. American Oil Chemists' Society (AOCS), 2022. http://dx.doi.org/10.21748/zrcc3198.

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Flaxseed (Linum usitatissimum &gt;L.) is gaining popularity in the food industry as a superfood due to its health-promoting properties. The flax plant synthesizes an array of biologically active cyclic peptides or linusorbs (LOs, a.k.a. cyclolinopeptides) from three or more ribosome-derived precursors. [1–9-NαC]-linusorb B3 and [1–9-NαC]-linusorb B2, suppress immunity, induce apoptosis in human epithelial cancer cell line (Calu-3) cells, and inhibit T-cell proliferation, but the mechanism of LOs action is unknown. Using gene expression analysis in nematode cultures and human cancer cell lines we have observed that LOs exert their activity, in part, through induction of apoptosis. Specific LOs’ properties include: 1) distribute throughout the body after flaxseed consumption; 2) induce heat shock protein (HSP) 70A production as an indicator of stress and addressed the issue in Caenorhabditis elegans (exposure of nematode cultures to [1–9-NαC]-linusorb B3 induced a 30% increase in production of the HSP 70A protein); 3) induce apoptosis in Calu-3 cells; and 4) modulate regulatory genes in microarray analysis. These diverse activities indicate that LOs might induce apoptosis in cancer cells or act as versatile platforms to deliver a variety of biologically active molecules for cancer therapy.
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Jaime, Sarahi, Adrián Cervantes-Martínez, Martha Gutiérrez-Aguirre, Eduardo Suárez-Morales, Julio Juárez-Pernillo, and Elena Reyes-Solares. "Historical Composition of Zooplankton as an Indicator of Eutrophication in Tropical Aquatic Systems: the Case of Lake Amatitlán, Central America." In 1st International Electronic Conference on Biological Diversity, Ecology and Evolution. MDPI, 2021. http://dx.doi.org/10.3390/bdee2021-09495.

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Reports on the topic "Biological indicator"

1

Peter R. Jaffe, John Komlos, Derick Brown. Hydrogen as an Indicator to Assess Biological Activity During Trace-Metal Bioremediation. Office of Scientific and Technical Information (OSTI), 2005. http://dx.doi.org/10.2172/850337.

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Glushko, E. Ya, and A. N. Stepanyuk. Optopneumatic medium for precise indication of pressure over time inside the fluid flow. Астропринт, 2018. http://dx.doi.org/10.31812/123456789/2874.

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In this work, a gas-filled 1D elastic pneumatic photonic crystal is proposed as an optical indicator of pressure which can unite several pressure scales of magnitude. The indicator includes layered elastic platform, optical fibers and switching valves, all enclosed into a chamber. We have investigated the pneumatic photonic crystal bandgap structure and light reflection changes under external pressure. At the chosen parameters the device may cover the pressure interval (0, 10) bar with extremely high accuracy (1 μbar) for actual pressures existing inside the biofluid systems of biological organisms. The size of the indicator is close to 1 mm and may be decreased. The miniaturized optical devices considered may offer an opportunity to organize simultaneous and total scanning monitoring of biofluid pressure in different parts of the circulatory systems.
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Axenrot, Thomas, and Erik Degerman. Ontogenetic variation in lacustrine European smelt (Osmerus eperlanus) populations as a response to ecosystem characteristics : an indicator of population sensitivity to environmental and climate stressors. Department of Aquatic Resources, Swedish University of Agricultural Sciences, 2024. http://dx.doi.org/10.54612/a.5qdiolcgj2.

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Smelts play a key role in the pelagic ecosystem of large lakes in northern Europe and North America. In numbers, they often dominate the open water. In large lakes in Scandinavia (including Finland), European smelt (Osmerus eperlanus L.), a cold-water glacial relict, is commonly the most important prey for piscivorous fish species, but also acts by ontogenetic shifts as a predator on zoo-plankton, small crustaceans, fish larvae, mysids and occasionally – with increasing size - fish. Furthermore, the large numbers of smelt in the open water are important competitors to other planktivorous fish. Due to the diverse life histories and biological interactions of smelt in large lakes, its role in the food-web structure is expected to be variable. Smelt population dynamics, recruitment, size and age structure, growth, life history and mortality were analysed and compared for five Swedish lakes that varied in size, depth, morphology, trophic status and latitude to understand the varying life histories and roles in lake food-webs. The results showed that in shallow, eutrophic lakes smelt stayed small and short-lived, and populations experienced high mortality. In deeper, colder and less nutrient-rich lakes, smelts grew larger and older, and might shift to a piscivorous trophic level. By ontogenetic adaptions smelt seems to uphold high abundance and recruitment over a wide range of ecosystems, but in shallow lakes without cold water refuges smelt populations run the risk of collapsing on the occasion of extremely warm summers with drastic consequences for their predators and lake ecosystems.
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Basis, Najwa, and Tamar Shochat. Associations between religion and sleep: A systematic review of observational studies in the adult population. INPLASY - International Platform of Registered Systematic Review and Meta-analysis Protocols, 2022. http://dx.doi.org/10.37766/inplasy2022.7.0057.

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Review question / Objective: The aim of this systematic review is to investigate observational studies on the association between religion and sleep in the adult population. To this end, the proposed systematic review will address the following question: What is the role religion plays in shaping an individual's sleep health? Condition being studied: Sleep is a fundamental biological process increasingly recognized as a critical indicator of development and overall health. Generally, insufficient sleep is associated with depressed mood, daytime fatigue, poor daytime functioning and daytime sleepiness, increased risk of cancer, cardiovascular problems, diabetes, and the cause of the higher risk of mortality. Furthermore, changes in sleep architecture and quality have been related to cognitive deterioration, including dementia and Alzheimer's disease. Here we will identify the role of religion in elements of sleep health, to include sleep duration and sleep quality, and associated health outcomes in the adult population.
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Walsh, Margaret, Peter Backlund, Lawrence Buja, et al. Climate Indicators for Agriculture. United States. Department of Agriculture. Climate Change Program Office, 2020. http://dx.doi.org/10.32747/2020.7201760.ch.

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The Climate Indicators for Agriculture report presents 20 indicators of climate change, carefully selected across multiple agricultural production types and food system elements in the United States. Together, they represent an overall view of how climate change is influencing U.S. agriculture and food systems. Individually, they provide useful information to support management decisions for a variety of crop and livestock production systems. The report includes multiple categories of indicators, including physical indicators (e.g., temperature, precipitation), crop and livestock (e.g., animal heat stress), biological indicators (e.g., pests), phenological indicators (e.g. seasonality), and socioeconomic indicators (e.g., total factor productivity).
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Muxo, Robert, Kevin Whelan, Raul Urgelles, Joaquin Alonso, Judd Patterson, and Andrea Atkinson. Biscayne National Park colonial nesting birds monitoring protocol—Version 1.1. National Park Service, 2022. http://dx.doi.org/10.36967/nrr-2290141.

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Breeding colonies of wading birds (orders Ciconiiformes, Pelecaniformes) and seabirds (orders Suliformes, Pelecaniformes) serve as important indicators of aquatic ecosystem health, as they respond to changes in food abundance and quality, contaminants, invasive species, and disturbance. The Comprehensive Everglades Restoration Plan, Restoration Coordination &amp; Verification program (CERP-RECOVER) has identified wading-bird colonies as an important ecosystem restoration indicator. The National Park Service South Florida/Caribbean Inventory &amp; Monitoring Network (SFCN) ranked colonial nesting birds eighth out of 44 vital signs of park natural resource conditions for ecological significance and feasibility. However, while large-scale monitoring efforts are occurring in the rest of the Greater Everglades Ecosystem, only minimal historic data collection and no extensive ongoing monitoring of wading bird and seabird nesting have occurred in Biscayne National Park. Consequently, due to their high importance as biological indicators and because they are a gap occurring in regional monitoring efforts, the network has initiated a monitoring program of colonial nesting birds in Biscayne National Park. This protocol provides the rationale, approach, and detailed Standard Operating Procedures for annual colonial bird monitoring within and close to Biscayne National Park and conforms to the Oakley et al. (2003) guidelines for National Park Service long-term monitoring protocols. The specific objectives of this monitoring program are to determine status and long-term trends in: Numbers and locations of active colonies of colonial nesting birds with a special focus on Double-crested Cormorants, Great Egrets, Great White Herons, Great Blue Herons, White Ibises, and Roseate Spoonbills. Annual peak active nest counts of colonial nesting birds in Biscayne National Park with a special focus on the species mentioned above. An annual nesting index (i.e., sum of monthly nest counts) with a special focus on the species mentioned above. Timing of peak nest counts for the focal species.
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MITCHELL, R. M. Utilization of Coyotes & Cryptogams as Biological Indicators of Radionuclide Uptake. Office of Scientific and Technical Information (OSTI), 2001. http://dx.doi.org/10.2172/807265.

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Cueto, Santiago. Additional Analysis of Nutritional Indicators and Children's Development. Inter-American Development Bank, 2007. http://dx.doi.org/10.18235/0006820.

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This presentation deals with the relationship between malnutrition and behavior patterns. As examples on how nutrition affects human social development it presents a series of crossed indicators such as neonatal iron status and temperament and height and weight as predictors of achievement, grade repetition and dropout in rural Peru. This document was created for the PAHO/IDB Workshop Seminar "On Health, Human Development Potential and the Quality of Life: Towards Biological-Based Index of Human Development Potential for Assessing the Quality of Life" in May, 2007.
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Yotis, William W. Chemical and Biological Attributes of Selected Periodontopathogens as Potential Indicators of Periodontal Disease. Defense Technical Information Center, 1992. http://dx.doi.org/10.21236/ada259063.

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Yotis, William W. Chemical and Biological Attributes of Selected Periodontopathogens as Potential Indicators of Periodontal Disease. Defense Technical Information Center, 1990. http://dx.doi.org/10.21236/ada226312.

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