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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
121

Neoliberalism And The Swedish Model : A Critical Discourse Analysis of Crises facing the Swedish Rental Housing Market

Sandström, Carolina January 2023 (has links)
This study utilises Critical Discourse Analysis (CDA) to examine media discourses on rent increases in the Swedish rental housing market and their reflection of crises within neoliberal regimes. Proceeding from newspaper articles from Dagens Nyheter, the largest newspaper in Sweden, two separate time periods are analysed, with one functioning as a control group. The analysis implements three levels of CDA: text, discursive practice, and social practice.The findings illuminate the complex nature of rent increases, with different perspectives from tenants, landlords, and policymakers. Power imbalances are evident, providing certain actors with more legitimacy and influence. The analysis confirms the influence of neoliberal forces in the Swedish rental market, reflected in language, values, and individual representation. Three of philosopher Michael Brie's identified crises— overaccumulation, integration, and representative democracy—are evident in the discourses on rent increases, with varying positions over time. The crisis of overaccumulation is more evident in the second period, potentially influenced by global economic conditions, while the crises of integration and democracy are consistent in their evidence. This analysis shines light on the interaction between discourses, ideology, and power dynamics, providing insights into the challenges posed by the process of neoliberalization.
122

The Relative Security Metric of Information Systems: Using AIMD Algorithms

Owusu-Kesseh, Daniel 28 June 2016 (has links)
No description available.
123

Utvärdering av en billig ultraljudsmaskin med avseende på bildkvalitet och temperaturökning / Evaluation of a Cheap Ultrasound Machine with Respect to Image Quality and Temperature Increase

Dragunova, Yulia, Anderberg, Joakim January 2021 (has links)
Ultraljudsdiagnostik baseras på propagering av mekaniska vågor och används för att avbilda tvärsnitt av kroppen i realtid. Prestandan, med avseende på kontrast, upplösning och måttmätningar, av CONTEC CMS600B-3, en relativ billig maskin är av intresse. Hur volymen av en fantom, dess ytarea och frekvens på utskickade vågor påverkar uppvärmningen av vävnader är även av intresse. Det undersöktes med ultraljudsmaskinerna CONTEC CMS600B-3 och Philips Lumify för att få resultat som inte beror på endast en maskin.  Axiella upplösningen på CONTEC CMS600B-3 uppmättes med hjälp av ett gem till 0,61 mm och den laterala upplösningen till 1,27 mm med hjälp av ett snitt i cement. Maskinens måttmätningar hade en relativ avvikelse   beroende på mätning. Resultat för reflektionskoefficienten visade att ultraljudsmaskinen har en funktion som kompenserar för attenuering och förstärker signaler med låga amplituder.  Temperaturmätningarna undersöktes genom att skapa fantomer som efterliknar mänskliga vävnader med olika volymer och ytareor. En undersökning med ultraljudsmaskinerna visade att mer temperaturökning sker då ytarean ökas när volymen hålls konstant. Med avseende på säkerhet i temperaturökning, axiell upplösning och area/omkrets mått uppfyller CONTEC CMS600B-3 inte standarden och kan därmed inte användas inom sjukvården. / Diagnostics with ultrasound are based on propagation of mechanical waves and is used for imaging cross-section of the body in real-time. Performance, regarding contrast, resolution, and size measure, of CONTEC CMS600B-3, a relatively cheap machine is of interest. How volume of a phantom, its surface area, and frequency of the waves affects the heating of the tissues is also of interest. It was measured using ultrasound machines CONTEC CMS600B-3 and Philips Lumify to obtain results independent of the machine used.   The axial resolution of CONTEC CMS600B-3 was established with a paperclip to be 0.61 mm and the lateral resolution was measured to be 1.27 mm using concrete with a triangular slit. Measurements of the machine had a relative deviation was   depending on the measure. Results of the reflection coefficient indicated that CONTEC CMS600B-3 has a built-in function that compensates for loss of intensity due to attenuation and amplifies signals with lower amplitude to produce a B-mode image that the user can understand.  Temperature measurements were done on phantoms that mimic the human body with different volumes and surface areas. An investigation with ultrasound machines showed an increase in temperature with increased surface area as the volume is held constant. When looking at safety with temperature rise, axial resolution and area/circumference measurements, CONTEC CMS600B-3 does not meet the standard and therefore cannot be used in healthcare.
124

Specifické vzdělávací potřeby zrakově postižených pedagogů v rámci dalšího profesního vzdělávání / Specific educational needs of the visually handicap in the context of another professional education

Vodová, Alena January 2016 (has links)
The final thesis on the topic specific educational needs of visually impaired teachers as part of continuing professional education focuses on needs and opportunities related to education and lifelong education of visually impaired teachers in the Czech Republic. The thesis is divided into theoretical and practical part. The theoretical part deals with the support, rehabilitation and use of assistive devices for this education. Furthermore, mapping companies and organizations supporting the visually impaired and offers examples of good practice. The practical part analyzes the possibilities of further professional education of visually impaired teachers, and seeks to identify the needs and currently offers this education into practice. KEYWORDS visual handicap, educational needs, further professional education, professional increase, compensatory aid
125

Kompetence nelékařského zdravotnického personálu v České republice / Competence of non-medical staff in the Czech republic

Hrbáček, Jiří January 2016 (has links)
The topic of the diploma thesis is dedicated to competence of non medical staff in the Czech Republic. The whole draft is built on analysing of the specific issues and consideration if it is possible to attein, that physicians could transmit part of their competences to non medical staff under the current law approval. In the theoretical part of the work I focus on identification of individual factors influence the work of non-medical staff and the conditions under which it is possible to perform the medical profession. Further on the system of education and competence individual profession primarily workers in intensive care. It also includes considerations for and against increasing the skills and vicarious view of selected experts. At the end of the thesis I developed a comparison between the neighboring states and the Czech Republic in the competence of selected professions. In the empirical part of the work, I work with data that I received from questionnaires. I concentrated mainly on nurses in intensive care units, and anesthesiology and resuscitation department. As well as to sites of paramedics station services in Prague (CSU crew III) Research questions aim to confirm or refute the hypotheses that I set on, if they want or not paramedical refuse the extension of his powers and at the same...
126

Le prix de la ville : Le marché immobilier à usage résidentiel dans l'aire urbaine de Marseille-Aix-en-Provence (1990-2010)

Boulay, Guilhem 21 November 2011 (has links)
La France a comme beaucoup de pays de l’OCDE connu une très forte inflation immobilière ces quinze dernières années. La hausse des prix a été particulièrement prononcée dans l’aire urbaine de Marseille-Aix-en-Provence, mettant en relief les limites des catégories et des méthodes d’analyse des marchés immobiliers de l’économie standard. L’apriorisme et les hypothèses anthropologiques de cette dernière ne permettent pas de rendre compte des dynamiques spatio-temporelles des prix. En se fondant alternativement sur les travaux de Simiand et Halbwachs d'une part et sur ceux des néo-ricardiens et néo-marxistes d'autre part, on montre qu’il est plus approprié de recourir aux notions de rente et de valeur d’opinion pour comprendre les mécanismes de formation et de différenciation spatiale des prix. A partir de données désagrégées et localisées à échelle fine sur les transactions immobilières, on identifie alors différents modes de formation des prix qui permettent d’expliquer le paradoxe apparent entre la puissante homogénéisation spatiale des prix et la très grande permanence des hiérarchies spatiales héritées de la période antérieure à l’inflation immobilière que révèle l’analyse spatiale de la hausse. Cette identification des régimes de formation des prix met en valeur le rôle des dispositifs de marché qui, à toutes les échelles, permettent le fonctionnement du marché et garantissent socialement les prix. Ces dispositifs (discours et structures géographiques avant tout) confèrent à certains territoires un rôle assurantiel qui peut exacerber à terme les inégalités inhérentes au modèle d’accession à la propriété. / In the last fifteen years, real estate prices have steeply increased in France, as in other OECD countries. Price increases have been particularly strong in the urban area of Marseille-Aix en Provence, challenging conventional economic categories, analytical methods and interpretations of real estate markets. Apriorism and the anthropological assumptions lying at the core of orthodox economics cannot account for spatial-temporal price dynamics in the Marseille region. By drawing on the work of both Simiand and Halbwachs, and of neo-Ricardian and neo-Marxist economists, this dissertation develops a framework based on the notions of "economic rent" and "opinion value" that provides a better account of price formation and spatial differencing in real estate markets. Different modes of price formation are evidenced using spatially localized, highly disaggregated data of real estate sales: the spatial analysis of real estate inflation helps explain the apparent contradiction between an increased spatial homogeneity of prices and the preservation of pre-existing price hierarchies. Further analysis of price formation regimes highlights the importance of those market devices that allow the market to work and act as price guarantees of a social nature. Such devices (essentially geographical discourses and structures) provide a form of spatial insurance against price decreases that calls into question the legitimacy and sustainability of the 'home ownership for everyone' model.
127

Comparação do limiar anaeróbio e da carga crítica com relação aos parâmetros cardiorrespiratórios, metabólicos e eletromiográficos no exercício resistido de Leg Press 45° em jovens e idosos / Comparison of anaerobic threshold and critical load in relation to cardiorespiratory, metabolic and EMG parameters, in resistance exercise Leg Press 45º in young and elderly

Arakelian, Vivian Maria 31 March 2015 (has links)
A crescente demanda pelo treinamento resistido tem incentivado a procura de metodologias para a prescrição deste tipo de exercício. Por isso, há uma busca incessante para se prescrever corretamente qual parâmetro e/ou intensidade seja a ideal para a execução do exercício resistido. Dessa forma protocolos incrementais podem ser interessantes, uma vez que podem determinar a magnitude das respostas fisiológicas (principalmente lactato e consumo de oxigênio) em diferentes domínios (leve, moderado e alto), pois através deles é possível identificar parâmetros de aptidão aeróbia e anaeróbia, como o limiar de lactato, limiar anaeróbio e carga crítica. No entanto, poucos estudos têm analisado de forma sistematizada diferentes intensidades de exercício resistido com o objetivo de determinar a magnitude das respostas cardiorrespiratórias, metabólicas e eletromiográficas para então propor estratégias reabilitadoras a indivíduos idosos baseada nestas respostas. Dessa forma, o objetivo principal desse estudo foi comparar as intensidades determinadas como limiar anaeróbio e carga crítica, em relação aos parâmetros de frequência cardíaca, ventilação, consumo de oxigênio, lactato, débito cardíaco, volume sistólico, além da análise eletromiográfica, entre jovens e idosos. Participaram deste estudo 35 homens ativos, sendo 20 jovens (média de idade de 23 ± 3 anos) e 15 idosos (média de idade de 70 ± 2,4 anos), aparentemente saudáveis. Todos os voluntários realizaram, de forma aleatória e em dias diferentes a: 1) teste de 1 RM em exercício resistido no Leg Press 45°; 2) teste de exercício físico resistido dinâmico crescente descontínuo; 3) três testes de exercícios resistidos de alta intensidade de carga constante (60%, 75% e 90% de 1 RM) até a fadiga e, após estes testes realizaram:, 4) teste de tolerabilidade no limiar anaeróbio, obtido através do teste crescente e, 5) teste de tolerabilidade da carga crítica obtida, pela regressão linear e relação hiperbólica entre carga e tempo de execução. Com relação ao limiar anaeróbio, obtido no teste incremental, foi possível determinar que este ocorreu em torno de 30% 1 RM e a carga crítica foi aproximadamente 52% 1 RM, para ambos os grupos. Com relação aos parâmetros estudados nas intensidades de exercício executadas, o envelhecimento mostrou ser determinante para uma redução nos valores relativos à capacidade aeróbia bem como na frequência cardíaca. Já com relação especificamente as intensidades do limiar anaeróbio e carga crítica, em ambos os grupos a ventilação, foi maior e consumo de oxigênio foi menor na intensidade da carga crítica. Já para as respostas de lactato, nós observamos menores valores para o grupo idoso, tanto para o limiar como na carga crítica. O débito cardíaco apresentou diferença apenas entre os grupos e não entre as intensidades, sendo que devido ao envelhecimento, houve redução dos valores. Já para a EMG, houve maiores quedas do slope da FM para idosos quando comparado aos jovens em 30%, e além disso, na intensidade de 30% acarretou em menor queda que em 52%. Ao comparar ao longo do tempo a FM e o RMS, o comportamento destes foi semelhantes nas duas intensidades, ou seja, de queda e aumento, respectivamente, o que é indicativo de maior fadigabilidade ao final do exercício. Além disso, a taxa de queda foi maior no grupo idoso, sendo que esse parâmetro é um indicador de maior fadiga muscular para este grupo. Entretanto, o comportamento do RMS ao final das duas intensidades foi menor nos idosos. Dessa forma, nossos resultados podem ter aplicações como uma forma de avaliar o desempenho funcional durante exercícios resistidos em diferentes populações e também pode ter utilidade na prescrição de um programa de treinamento dependo do objetivo a ser alcançado, elucidando a importância prática da aplicação de exercícios de resistência dinâmica. / The increasing demand for resistance training has motivated the search methodologies for prescribing this type of exercise. Therefore, there is a constant search to correctly prescribe which parameter and/or intensity is ideal for the implementation of resistance exercise. Thus incremental protocols may be interesting, since they can determine the magnitude of physiological responses (mainly lactate and oxygen consumption) in different domains (mild, moderate and high), because it is possible through them to identify parameters of aerobic and anaerobic fitness as the lactate threshold, anaerobic threshold and critical load. However, few studies have examined systematically different resistance exercise intensities form in order to determine the magnitude of the cardiorespiratory, metabolic and electromyographic responses and then propose the elderly rehabilitation strategies based on these answers. Thus, the aim of this study was to compare the intensities determined as anaerobic threshold and critical load, with respect to heart rate parameters, ventilation, oxygen consumption, lactate, cardiac output, stroke volume, besides the electromyographic analysis, between young and senior citizens. The study included 35 active men, 20 young (mean age 23 ± 3 years) and 15 older adults (mean age 70 ± 2.4 years), apparently healthy. All volunteers pertormed randomly on different days to: 1) 1 RM test in resistance exercise in Leg Press 45º; 2) dynamic resistance exercise test growing discontinuous; 3) three tests of resistance exercise high intensity constant load (60%, 75% and 90% of 1 RM) to failure and after these tests, performed 4) tolerance test at the anaerobic threshold, obtained by increasing test, 5) tolerability test critical load obtained by linear regression and hyperbolic relationship between load and runtime. Regarding the anaerobic threshold obtained in the incremental test, was determined that this occurred around 30% 1 RM and the critical load was approximately 52% 1 RM for both groups. As for the parameters studied in the exercise intensities performed, aging proved to be decisive for a reduction in the relative values of aerobic capacity and heart rate. In relation specifically the intensities of the anaerobic threshold and critical load in both grups, ventilation was higher and oxygen consumption was lower in the intensity of the critical load. As for the lactate responses, we observed lower values for the elderly group, both the threshold and the critical load. Cardiac output was difference only between groups and not between the intensities, and due to aging, decreased the values. As for EMG, was greater MF of the slope falls to elderly compared to 30% in young, and furthermore, intensity of 30% fall which resulted in less by 52%. Comparing over time RMS and MF, was similar in behavior of the two intensities, ie, increase and decrease, respectively, which is indicative of greater fatigue at the end of exercise. Furthermore, the decrease rate was higher in the elderly group, and this parameter is an indicator of increased muscle fatigue for this group. However, RMS behavior at the end of the two intensities were lower in the elderly. Thus, our results may have applications as a way to evaluate the functional performance during resistance training in different populations and can also be useful in prescribing a training program depend on the objective to be achieved, explaining the practical importance of the application of resistance exercise dynamics.
128

Avaliação do uso de solos não convencionais em estruturas de solo reforçado / Evaluation of the use of the marginal soils in reinforced soil structures

Patias, Josiele 27 May 2005 (has links)
As estruturas de solo reforçado tornaram-se uma alternativa eficiente para a construção de aterros e muros de contenção. No entanto, o seu uso é limitado pelas especificações técnicas, que recomendam apenas materiais granulares, por apresentarem alta resistência e capacidade de livre drenagem. Todavia, nem sempre se dispõem deste tipo de material nas proximidades das obras, o que pode torná-las onerosas, devido aos custos de transporte. Os solos não convencionais, definidos como solos de granulometria fina (caracterizados como argilas, siltes, e solos areno-siltosos), merecem atenção, pois são encontrados em abundância em muitos locais do nosso território. Casos históricos brasileiros de obras instrumentadas revelam a eficiência destes materiais na composição de aterros de estruturas de solo reforçado, devido ao bom desempenho técnico ao longo de sua vida útil. Acredita-se que o uso de inclusões permeáveis possa contribuir na aceleração da drenagem da água das camadas de maciços construídos com solos finos, permitindo a dissipação mais rápida do excesso de pressões neutras. Para elucidar estas questões foram realizados ensaios de compressão triaxial rápidos (UU) e adensados rápidos (CU), com o intuito de avaliar o desempenho de solos não convencionais reforçados com inclusões permeáveis e impermeáveis. Utilizaram-se como reforços papel alumínio (reforço inextensível e impermeável) e geotêxtil (reforço extensível e permeável), o que permitiu comparações dos resultados obtidos dos ensaios com corpos de prova reforçados com os obtidos de corpos de prova não reforçados. Os solos utilizados foram duas argilas silto-arenosas, uma de comportamento laterítico e a outra não laterítico e uma areia fina com aproximadamente 40% de finos (material com diâmetro inferior à peneira 200), com comportamento não laterítico. Verificou-se que a combinação de solos finos com reforços permeáveis resultou num ganho de resistência ora em termos de ângulo de atrito interno, ora em relação à coesão, apenas a areia fina obteve ganho de resistência ao ser reforçada com o papel alumínio. Observou-se que a argila silto-arenosa, com comportamento laterítico, e a areia fina apresentaram uma interação mais eficiente com os reforços de geotêxtil. Constatou-se ainda que os reforços permeáveis promoveram a drenagem da água dos corpos de prova / The reinforced soil structures became an efficient alternative for the construction of embankments and retaining walls. However, the use of these structures are limited by design specifications which recommend the use of granular materials that present high shearing strength and free drainage capacity. Some granular soils are not always available in the proximities of works, in these cases, costs of transportation can be high. The marginal soils, defined as fine grain-size (characterized as clays, silts, and sandy-silty) soils, deserve attention because they are found in abundance in many places on our territory, besides that, brazilian historical cases of instrumented structures have shown their efficiency when used as backfill of reinforced soil structures. It is also believed that the use of permeable inclusions can contribute to the acceleration of water drainage, which allows faster dissipation of pore pressure. To contribute to the understanding of these aspects of reinforced soil behavior, triaxial compression tests, unconsolidated-undrained (UU) and consolidated-undrained (CU), were carried out in order to check the performance of reinforced marginal soil when reinforced with permeable and impermeable inclusions. Aluminum foil (inextensible and impermeable reinforcement) and geotextile (extensible and permeable reinforcement) were used as reinforcement, allowing the comparison of results of tests using reinforced and non-reinforced samples. The soils used were two sandy silty clays - a lateritic and a non-lateritic soil - and fine sand with 40% of fines, presenting non-lateritic behavior. It was verified that the combination of cohesive soil and permeable reinforcements resulted on an increase of resistance parameters, angle of internal friction and cohesion. It was observed that the lateritic sandy silty clay and the fine sand presented more efficient interaction with the geotextile reinforcements. Also, it was verified that the permeable reinforcements promoted faster water drainage
129

Estabilidade da cor de músculos Longissimus lumborum de bovinos machos inteiros injetados com lactato embalados em atmosfera modificada / Color stability of Longissimus lumborum muscles from bulls enhanced with lactate packaged in modified atmosphere

Guimarães, Kathelyn Araújo 21 May 2015 (has links)
O efeito da injeção do lactato de potássio associado ao uso de atmosfera modificada com alto oxigênio sobre músculos Longissimus lumborum de bovinos machos inteiros foi avaliado. Foram utilizados animais anelorados (com características fenotípicas de Nelore) com diferentes faixas de pH final (pHf - 48h post mortem). Foram coletados 18 músculos e divididos em 3 grupos, sendo eles: baixo (controle; 5,4 < pHf < 5,8), intermediário (5,81 < pHf < 6,3) e alto (pHf > 6,3). Na primeira etapa, foi injetada em cada músculo uma solução de lactato de potássio a 2,5%, em seguida foram cortados em bifes, embalados em atmosfera modificada contendo 80% de oxigênio e 20% de gás carbônico e estocados no escuro a 2 ± 1ºC durante 5 dias. Posteriormente, estes seguiram para um expositor refrigerado com iluminação e temperatura controlada (2 ± 1ºC), onde permaneceram por 9 dias, completando 14 dias de vida útil. Análises de composição gasosa, pH, composição centesimal, sensorial de odor, avaliação microbiológica, oxidação lipídica e cor instrumental foram realizadas nos dias: 0, 5, 8, 11 e 14. Os resultados estatísticos obtidos foram analisados pelo método de medidas repetidas no tempo e também utilizando análise não-paramétrica. A oxidação lipídica foi menor (P < 0,05) e apresentou maior estabilidade em músculos com pHf alto. Não houveram diferenças (P > 0,05) na análise sensorial de odor entre os grupos. A contagem microbiana permaneceu dentro dos limites aceitáveis para consumo humano. Os grupos de pHf intermediário e alto apresentaram uma maior (P < 0,05) estabilidade da cor (maiores valores de a*, croma e oximioglobina). Nas condições do presente estudo, a injeção do lactato de potássio associada à atmosfera com alto oxigênio atuou beneficamente na estabilidade da cor e vida útil de músculos de pHf intermediário e alto. Pode-se concluir que a injeção desta solução é uma alternativa viável para tornar a aparência de bifes provenientes de músculos L. lumborum mais atrativa para o consumidor por meio da estabilização da cor, sem prejudicar a vida útil mesmo nas condições de embalagem utilizadas. / The effect of potassium lactate enhancement in a high oxygen modified packaging on bulls\' Longissimus lumborum was studied. Zebu animals (with phenotypic characteristics of Nellore) animals with different range of ultimate pH (pHu - 48h post mortem) were used. Eighteen muscles were collected and segregated into three groups, wich were: low (control; 5.4 < pHu < 5.8), intermediate (5.81 < pHu < 6.3) and high (pHu > 6.3). In the first stage, a 2.5% potassium lactate solution was injected into each muscle, then they were cut into steaks, packaged in a modified atmosphere containing 80% oxygen and 20% carbon dioxide and stored in the dark at 2 ± 1ºC for 5 days. Later, they were displayed with light and controlled temperature (2 ± 1ºC), where remained for 9 days, completing 14 days of shelf life. Gas composition, pH, proximate analysis, odor sensory, microbiological evaluation, lipid oxidation and instrumental color analysis were performed on days: 0, 5, 8, 11 and 14. The statistical results were analyzed by the method of repeated measurements over time and also using non-parametric analysis. The lipid oxidation decreased (P < 0.05) and showed greater stability on high pHu treatment. There were no differences (P > 0.05) between the treatments on odor sensory analysis. Microbial counts remained within acceptable limits for human consumption. The intermediate and high pHu groups had a higher (P < 0.05) color stability (higher values of a*, chroma and oxymyoglobin). Under the conditions of this study, the potassium lactate enhancement associated with high oxygen atmosphere (Hi-Ox MAP) can be an alternative to increase color stability and shelf life of intermediate and high pHu muscles. It can be concluded that the injection of this solution is a viable alternative to make L. lumborum steaks appearance more attractive to the consumer through the color stabilization, without sacrificing shelf life even under packaging conditions used.
130

Bases para o manejo da resistência de Diaphorina citri (Hemiptera: Liviidae) ao inseticida neonicotinoide imidacloprid em pomares de citros / Bases for resistance management of Diaphorina citri (Hemiptera: Liviidae) to the neonicotinoid insecticide imidacloprid in citrus groves

Poltronieri, Alex Sandro 15 April 2013 (has links)
Um dos inseticidas mais utilizados para o controle do psilídeo Diaphorina citri (Hemiptera: Liviidae) em pomares de citros no Brasil tem sido o neonicotinoide imidacloprid. Para subsidiar um programa de Manejo da Resistência de D. citri a imidacloprid foram realizados estudos de monitoramento da suscetibilidade a inseticidas em populações de D. citri provenientes das principais regiões citrícolas do Estado de São Paulo, interações de imidacloprid com inseticidas e fungicidas, e avaliação da viabilidade de associação de imidacloprid com o parasitoide Tamarixia radiata (Hymenoptera: Eulophidae). Para a caracterização de linhas básicas de suscetibilidade de D. citri aos inseticidas imidacloprid, deltamethrin e dimethoate foram utilizados bioensaios de contato residual. Foram definidas as concentrações diagnósticas de 56 mg de imidacloprid/L água (CL95), 32 mg de deltamethrin/L água (CL90) e 56 mg de dimethoate/L água (CL95) para o monitoramento da suscetibilidade de 25 populações de D. citri entre 2010 e 1012. Não ocorreram diferenças na sobrevivência aos inseticidas testados em populações de psilídeos coletados em pomares de citros com diferentes intensidades de pulverização com inseticidas. A maior sobrevivência de insetos nas concentrações diagnósticas foi observada em 2010, com valores de sobrevivência variando de 4,7% a 24,0% para imidacloprid, de 0,9% a 11,8% para deltamethrin e de 5,2% a 13,0% para dimethoate. Não foram observados aumentos significativos na sobrevivência de D. citri nos monitoramentos realizados em 2011 e 2012. As interações de imidacloprid com deltamethrin ou dimethoate foram testadas com as CL25 dos respectivos inseticidas em bioensaio de contato residual. As interações foram aditivas sobre a mortalidade de adultos em condições de campo e de casa de vegetação. A mistura de imidacloprid com buprofezin e pyriproxyfen sobre ninfas de 3º instar também foi aditiva. A atividade biológica das concentrações campo de imidacloprid (40?L/mL) e buprofezin (375?g/mL) e da mistura dos mesmos mostrou uma degradação da atividade similar para o controle de D. citri em condições de campo e casa de vegetação. A avaliação da persistência da mistura de imidacloprid e pyriproxyfen (avaliado nas concentrações de 6,25?g/mL e 100?g/mL) indicou que pyriproxyfen teve degradação mais rápida que imidacloprid. A mistura de imidacloprid na CL25 para D. citri com a concentração de campo dos fungicidas Benzimidazol (500?g/mL de tiofanato-metilico), estrubilurina (37,5?g /mL de piraclostrobina) e triazol (50?g/mL de difenenoconazol) não afetaram o desempenho de imidacloprid. Houve significativa redução na taxa instantânea de crescimento (ri) de D. citri quando expostas a diferentes idades de resíduos de imidacloprid pulverizado na concentração de 40?g/mL, mesmo sobre resíduos com 56 dias de idade, levando à extinção da população ou em processo de extinção. A exposição a CL5 (0,501?g/mL), CL10 (0,804?g/mL), CL25 (1,995?g/mL) e CL50 (5,213?g/mL) de imidacloprid para D. citri reduziu o crescimento populacional de D. citri, mas não causou sua extinção. Contudo, essas concentrações de imidacloprid afetaram a ri do parasitoide com a CL50 causando sua extinção. / One of the most widely used insecticides for control of Diaphorina citri (Hemiptera: Liviidae) in citrus groves in Brazil has been the neonicotinoid imidacloprid. To implement an Insect Resistance Management program of D. citri to imidacloprid, studies were conducted to monitor the susceptibility to insecticides in D. citri populations collected from main citrus production regions of São Paulo State, to evaluate the interactions of imidacloprid with insecticides and fungicides, and to assess the feasibility of imidacloprid association with the parasitoid Tamarixia radiata (Hymenoptera: Eulophidae). Residual contact bioassays were used to characterize the baseline susceptibility of D. citri to the insecticides imidacloprid, deltamethrin and dimethoate. Diagnostic concentrations of 56 mg of imidacloprid/L water (LC95), 32 mg of deltamethrin/L water (LC90) and 56 mg of dimethoate/L water (LC95) were defined for monitoring the susceptibility in 25 populations of D. citri from 2010 to 2012. There were no differences in survival to the insecticides tested in D. citri populations collected in citrus groves with different regimes of insecticide use. The highest survival of insects at diagnostic concentrations was observed in 2010, with survival values ranging from 4.7% to 24.0% for imidacloprid, from 0.9% to 11.8% for deltamethrin and 5.2% to 13.0% dimethoate. There were no significant increases in survival of D. citri on monitoring conducted in 2011 and 2012. The interactions of imidacloprid with deltamethrin or dimethoate were tested with the LC25 of each insecticide with residual contact bioassays. The interactions of these insecticides were additive on D. citri adult mortality under field or greenhouse conditions. The interactions of imidacloprid with buprofezin and pyriproxyfen were additive on 3rd instar nymphs. The biological activity at field rates of imidacloprid (40?l/mL) and buprofezin (375?g/mL) as well as the mixture of these insecticides showed a similar degradation in the activity to control D. citri under field and greenhouse conditions. The evaluation of the persistence of the mixture of pyriproxyfen and imidacloprid (evaluated at concentrations of 6.25 ?g/mL and 100?g/mL) indicated that pyriproxyfen degradation was faster than imidacloprid. The mixture of LC25 of imidacloprid to D. citri with fungicides field rates of benzimidazole (500?g/mL of thiophanate-methil), strobilurin (37.5 ?g/mL of pyraclostrobin), and triazole (50?g/mL of difenoconazole) did not affect the performance of imidacloprid. A significant reduction in the instantaneous rate of increase (ri) of D. citri was observed when exposed to different residue ages of imidacloprid sprayed at concentration of 40?g/mL, even when exposed to residues of 56-day old, by leading to their extinction or in extinction process. The exposure to CL5 (0.501 ?g/mL), CL10 (0.804 ?g/mL), LC25 (1.995 ?g/mL) and LC50 (5.213 ?g/mL) of imidacloprid to D. citri did not cause their extinction. However, these concentrations of imidacloprid affected the ri of the parasitoid causing their extinction at LC50.

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