• Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 12
  • 11
  • 5
  • 1
  • 1
  • Tagged with
  • 33
  • 7
  • 5
  • 5
  • 5
  • 5
  • 5
  • 5
  • 4
  • 4
  • 4
  • 4
  • 4
  • 3
  • 3
  • 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.
21

Acute Phase T Cell Help in Neutrophil-Mediated Clearance of Helicobacter pylori

DeLyria, Elizabeth S. 23 January 2010 (has links)
No description available.
22

Produtividade de cana-de-açúcar irrigada por gotejamento: Interações entre variedades, lâminas e intensidade do déficit hídrico na fase de maturação / Productivity of sugarcane drip irrigated: interactions between varieties, irrigation depth and water deficit intensity during ripening

Barbosa, Fernando da Silva 14 January 2015 (has links)
O setor sucroenergético enfrenta atualmente uma crise industrial e agrícola, carecendo de pesquisas para reverter este quadro, dependendo de matéria-prima a custos competitivos, e isso, passa obrigatoriamente pelo aumento de produtividade no campo. A irrigação é uma das alternativas para o aumento de produtividade, mas exige investimentos consideráveis para se irrigar de forma profissional. Além disso, a crescente demanda por alimentos e a competição por recursos hídricos em todo o mundo são uma realidade que impulsiona o uso mais eficiente da água em todos os setores, principalmente na agricultura. Assim, com a hipótese de que, para cada variedade de cana-de-açúcar, existe uma combinação mais adequada entre a lâmina de irrigação e a intensidade do déficit hídrico na fase de maturação, de modo a maximizar a produtividade, o objetivo deste trabalho foi avaliar o efeito de quatro lâminas de irrigação e quatro intensidades de déficit hídrico na fase de maturação, para oito variedades de cana-deaçúcar irrigadas por gotejamento, analisando as variáveis relacionadas à qualidade e à produtividade por unidade de área, bem como, quantificando a produtividade por unidade de água (evapo)transpirada (produtividade da água). O experimento foi conduzido em estufa na Escola Superior de Agricultura \"Luiz de Queiroz\" (USP), em Piracicaba-SP. Os tratamentos foram distribuídos em esquema fatorial (4x4x8) com parcelas sub-subdivididas com 3 repetições, totalizando-se 128 tratamentos e 384 parcelas experimentais, sendo as parcelas experimentais compostas de um vaso com aproximadamente 330 litros de solo contendo duas plantas. As lâminas avaliadas (L50, L75 L100 e L125) foram variações na fração aplicada ao longo do tempo tomando como referência o tratamento L100, em que se manteve a umidade do solo próxima à capacidade de campo (θcc) ao longo de todo experimento. Cada variedade testada teve sua própria referência L100. As intensidades do déficit hídrico para maturação avaliadas foram M1 (déficit hídrico moderado de longa duração), M2 (déficit hídrico intensivo de longa duração), M3 (sem déficit hídrico) e M4 (déficit hídrico severo de curta duração). A produtividade de colmos (TCH) foi favorecida pela combinação L100 e M3, independente da variedade estudada, com valor médio estimado de 232,2 t ha-1. Entre as variedades, a V4 apresentou a maior TCH, com média de 250,4 t ha-1 para L100. O rendimento bruto de açúcar (RBA) está diretamente ligado à produtividade de colmos, sendo igualmente favorecido pela combinação de L100 e M3, com valor médio de 23,4 t ha-1. As variedades V1, V2, V4 e V6, na lâmina L100, não diferiram significativamente entre si para RBA e tiveram a maior média, 23,9 t ha-1. A produtividade da água em açúcar e biomassa foi diferenciada em 4 e 2 grupos de variedades, respectivamente, e foi independente da lâmina de irrigação e do manejo para maturação adotados. Este resultado para a produtividade da água é característico da irrigação por gotejamento, onde as perdas por evaporação são minimizadas e a retenção de água nas folhas inexiste. Desta maneira, recomenda-se a irrigação plena de cana-de-açúcar caso a opção econômica seja pelo sistema de gotejamento. / The sugarcane industry is currently facing an industrial and agricultural crisis, lacking research to reverse this situation, depending on the raw material at competitive costs, and this inevitably entails the increase in productivity in the field. The use of irrigation systems is imposed as an alternative, but requires considerable investments to irrigate professionally. In addition, the growing demand for food and competition for water resources worldwide, are a reality that drives the more efficient water use in all sectors, especially in agriculture. Thus, with the hypothesis that there is for each variety of sugar sugarcane, a more appropriate mix between irrigation depth and intensity water deficit during ripening, in order to maximize productivity, the aim of this work was to evaluate the effect of four irrigation depths and four levels of water stress during ripening, for eight drip irrigated sugarcane varieties, analyzing the variables related to quality and productivity per area unit, as well as quantifying productivity per unit of evapotranspired water (water productivity). The experiment was conducted in a greenhouse at the \"Luiz de Queiroz\" College of Agriculture (USP) in Piracicaba-SP. Treatments were arranged in a factorial design (4x4x8) with split-split-plot with three replicates, totaling 128 treatments and 384 plots, and the plots consist of a box with about 330 liters of soil containing two plants. The evaluated irrigation depths (L50, L75 and L100 L125) were variations in the fraction applied over time, relative to the treatment L100, where soil moisture remained close to field capacity (θcc) throughout the experiment. Each tested variety had its own reference L100. The intensities of water deficit during maturation were evaluated for M1 (moderate water deficit of long duration), M2 (intensive water deficit of long duration), M3 (no water deficit) and M4 (severe water deficit of short duration). The sugarcane yield (TCH) was favored by the combination L100 and M3, regardless of the studied variety, with an estimated average value of 232.2 t ha-1. Among the varieties, V4 had the highest TCH, with average of averaging 250.4 t ha-1 for L100. Sugar yield (RBA) is directly linked to sugarcane yield and is also favored by the combination of L100 and M3, with an average value of 23.4 t ha-1. The V1, V2, V4 and V6 varieties, for irrigation depth L100, did not differ significantly for RBA and had the highest average, 23.9 t ha-1. The water productivity in sugar and biomass differed in 4 and 2 variety groups, respectively, and was independent of the adopted irrigation depth and maturation management. The result for water productivity is characteristic of drip irrigation, where losses by evaporation are minimized and water retention in the leaves does not exist. Thus, one should consider the possibility of full drip irrigation, instead of the deficit one, for sugarcane.
23

Produtividade de cana-de-açúcar irrigada por gotejamento: Interações entre variedades, lâminas e intensidade do déficit hídrico na fase de maturação / Productivity of sugarcane drip irrigated: interactions between varieties, irrigation depth and water deficit intensity during ripening

Fernando da Silva Barbosa 14 January 2015 (has links)
O setor sucroenergético enfrenta atualmente uma crise industrial e agrícola, carecendo de pesquisas para reverter este quadro, dependendo de matéria-prima a custos competitivos, e isso, passa obrigatoriamente pelo aumento de produtividade no campo. A irrigação é uma das alternativas para o aumento de produtividade, mas exige investimentos consideráveis para se irrigar de forma profissional. Além disso, a crescente demanda por alimentos e a competição por recursos hídricos em todo o mundo são uma realidade que impulsiona o uso mais eficiente da água em todos os setores, principalmente na agricultura. Assim, com a hipótese de que, para cada variedade de cana-de-açúcar, existe uma combinação mais adequada entre a lâmina de irrigação e a intensidade do déficit hídrico na fase de maturação, de modo a maximizar a produtividade, o objetivo deste trabalho foi avaliar o efeito de quatro lâminas de irrigação e quatro intensidades de déficit hídrico na fase de maturação, para oito variedades de cana-deaçúcar irrigadas por gotejamento, analisando as variáveis relacionadas à qualidade e à produtividade por unidade de área, bem como, quantificando a produtividade por unidade de água (evapo)transpirada (produtividade da água). O experimento foi conduzido em estufa na Escola Superior de Agricultura \"Luiz de Queiroz\" (USP), em Piracicaba-SP. Os tratamentos foram distribuídos em esquema fatorial (4x4x8) com parcelas sub-subdivididas com 3 repetições, totalizando-se 128 tratamentos e 384 parcelas experimentais, sendo as parcelas experimentais compostas de um vaso com aproximadamente 330 litros de solo contendo duas plantas. As lâminas avaliadas (L50, L75 L100 e L125) foram variações na fração aplicada ao longo do tempo tomando como referência o tratamento L100, em que se manteve a umidade do solo próxima à capacidade de campo (θcc) ao longo de todo experimento. Cada variedade testada teve sua própria referência L100. As intensidades do déficit hídrico para maturação avaliadas foram M1 (déficit hídrico moderado de longa duração), M2 (déficit hídrico intensivo de longa duração), M3 (sem déficit hídrico) e M4 (déficit hídrico severo de curta duração). A produtividade de colmos (TCH) foi favorecida pela combinação L100 e M3, independente da variedade estudada, com valor médio estimado de 232,2 t ha-1. Entre as variedades, a V4 apresentou a maior TCH, com média de 250,4 t ha-1 para L100. O rendimento bruto de açúcar (RBA) está diretamente ligado à produtividade de colmos, sendo igualmente favorecido pela combinação de L100 e M3, com valor médio de 23,4 t ha-1. As variedades V1, V2, V4 e V6, na lâmina L100, não diferiram significativamente entre si para RBA e tiveram a maior média, 23,9 t ha-1. A produtividade da água em açúcar e biomassa foi diferenciada em 4 e 2 grupos de variedades, respectivamente, e foi independente da lâmina de irrigação e do manejo para maturação adotados. Este resultado para a produtividade da água é característico da irrigação por gotejamento, onde as perdas por evaporação são minimizadas e a retenção de água nas folhas inexiste. Desta maneira, recomenda-se a irrigação plena de cana-de-açúcar caso a opção econômica seja pelo sistema de gotejamento. / The sugarcane industry is currently facing an industrial and agricultural crisis, lacking research to reverse this situation, depending on the raw material at competitive costs, and this inevitably entails the increase in productivity in the field. The use of irrigation systems is imposed as an alternative, but requires considerable investments to irrigate professionally. In addition, the growing demand for food and competition for water resources worldwide, are a reality that drives the more efficient water use in all sectors, especially in agriculture. Thus, with the hypothesis that there is for each variety of sugar sugarcane, a more appropriate mix between irrigation depth and intensity water deficit during ripening, in order to maximize productivity, the aim of this work was to evaluate the effect of four irrigation depths and four levels of water stress during ripening, for eight drip irrigated sugarcane varieties, analyzing the variables related to quality and productivity per area unit, as well as quantifying productivity per unit of evapotranspired water (water productivity). The experiment was conducted in a greenhouse at the \"Luiz de Queiroz\" College of Agriculture (USP) in Piracicaba-SP. Treatments were arranged in a factorial design (4x4x8) with split-split-plot with three replicates, totaling 128 treatments and 384 plots, and the plots consist of a box with about 330 liters of soil containing two plants. The evaluated irrigation depths (L50, L75 and L100 L125) were variations in the fraction applied over time, relative to the treatment L100, where soil moisture remained close to field capacity (θcc) throughout the experiment. Each tested variety had its own reference L100. The intensities of water deficit during maturation were evaluated for M1 (moderate water deficit of long duration), M2 (intensive water deficit of long duration), M3 (no water deficit) and M4 (severe water deficit of short duration). The sugarcane yield (TCH) was favored by the combination L100 and M3, regardless of the studied variety, with an estimated average value of 232.2 t ha-1. Among the varieties, V4 had the highest TCH, with average of averaging 250.4 t ha-1 for L100. Sugar yield (RBA) is directly linked to sugarcane yield and is also favored by the combination of L100 and M3, with an average value of 23.4 t ha-1. The V1, V2, V4 and V6 varieties, for irrigation depth L100, did not differ significantly for RBA and had the highest average, 23.9 t ha-1. The water productivity in sugar and biomass differed in 4 and 2 variety groups, respectively, and was independent of the adopted irrigation depth and maturation management. The result for water productivity is characteristic of drip irrigation, where losses by evaporation are minimized and water retention in the leaves does not exist. Thus, one should consider the possibility of full drip irrigation, instead of the deficit one, for sugarcane.
24

Logic Encryption Using Dynamic Keys

Muralidharan, Vaishali January 2020 (has links)
No description available.
25

Determinação do coeficiente de cultura da melancia, em solo sob palhada e preparo convencional, na microrregião de Teresina, Piauí / Determination of the watermelon crop coefficient in a soil under conventional tillage and straw, at the Teresina region, Piauí State, Brazil

Silva, Eduardo Magno Pereira da January 2012 (has links)
SILVA, Eduardo Magno Pereira. Determinação do coeficiente de cultura da melancia, em solo sob palhada e preparo convencional, na microrregião de Teresina, Piauí. 2012. 102 f. : Dissertação (mestrado) - Universidade Federal do Ceará, Centro de Ciências Agrárias, Departamento de Engenharia Agrícola, Fortaleza-CE, 2012. / Submitted by demia Maia (demiamlm@gmail.com) on 2016-06-21T13:35:20Z No. of bitstreams: 1 2012_dis-empsilva.pdf: 2759087 bytes, checksum: d0dfc3464fcc4081ed5b63da1851ebd4 (MD5) / Approved for entry into archive by demia Maia (demiamlm@gmail.com) on 2016-06-21T13:36:15Z (GMT) No. of bitstreams: 1 2012_dis-empsilva.pdf: 2759087 bytes, checksum: d0dfc3464fcc4081ed5b63da1851ebd4 (MD5) / Made available in DSpace on 2016-06-21T13:36:15Z (GMT). No. of bitstreams: 1 2012_dis-empsilva.pdf: 2759087 bytes, checksum: d0dfc3464fcc4081ed5b63da1851ebd4 (MD5) Previous issue date: 2012
26

Aplicação do algoritmo SAFER na obtenção da evapotranspiração atual das culturas em condições de cerrado / Application of algorithm SAFER in obtaining evapotranspiration crop in cerrado conditions

Souza, João Maurício Fernandes 03 March 2016 (has links)
Submitted by JÚLIO HEBER SILVA (julioheber@yahoo.com.br) on 2016-11-07T17:59:05Z No. of bitstreams: 2 Tese - João Maurício Fernandes Souza - 2016.pdf: 2109965 bytes, checksum: 354c6e284810d4d8d4ea3bc575fff052 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) / Approved for entry into archive by Jaqueline Silva (jtas29@gmail.com) on 2016-11-08T17:50:00Z (GMT) No. of bitstreams: 2 Tese - João Maurício Fernandes Souza - 2016.pdf: 2109965 bytes, checksum: 354c6e284810d4d8d4ea3bc575fff052 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) / Made available in DSpace on 2016-11-08T17:50:00Z (GMT). No. of bitstreams: 2 Tese - João Maurício Fernandes Souza - 2016.pdf: 2109965 bytes, checksum: 354c6e284810d4d8d4ea3bc575fff052 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Previous issue date: 2016-03-03 / Conselho Nacional de Pesquisa e Desenvolvimento Científico e Tecnológico - CNPq / To realize an efficient management of water use in irrigated agriculture is important to obtain meteorological information to assist in the management of water resources. Since the data of evapotranspiration (ET) they are often used as a fundamental criterion in irrigation operations in the calculation of water balance and agroclimatic zoning. Therefore, the estimated evapotranspiration of culture on a regional scale, based on satellite images represent a great contribution to the studies on the management of water resources, being able to provide their estimate in areas with high heterogeneity and size, to Unlike micrometeorological methods and even of direct measures such as lysimeter. Compared to other models that use the energy balance, the SAFER (Simple Algorithm for Retrieving Evapotranspiration) has a simpler parameter, requiring only the remote data of the albedo, NDVI and temperature. The SAFER still has the additional advantage of using data from both types of stations meteorological conventional and automatic. This feature is important because it allows the assessment of historical trends of energy balance components on a large scale over the years,given that automatic sensors are relatively recent developments in instrumental technology. Considering the recent development of SAFER, there are not many studies to assess its performance. The aim of this study was estimate the culture evapotranspiration and their respective Kc's in its different phenological phases without water restriction, in areas in Goias Cerrado region, using remote sensing techniques for validation of the agro-meteorological model SAFER (Simple Algorithm for Evapotranspiration Retrieving) in compared to the method standard FAO 56. , using agrometeorological monitoring and after evaluation of the model's reliability, make a comparison between the ETr estimation method obtained by SAFER,with the climatological hidric balance and the soil water balance in order to validate the proposed methodology as an alternative to methods traditional. The structure of this study is as follows: after the introduction and literature review on the topic, the first chapter presents the SAFER calibration data and its application in bean crop, tomato, sugarcane and wheat in Goias Cerrado, taking as reference the water requirement estimates using the FAO methodology; and then, after proof of efficiency, in the second chapter presents the SAFER application results in a dry area cultivated with sugarcane in order to present it as an alternative to traditional methods / As informações agrometeorológicas auxiliam o gerenciamento dos recursos hídricos e possibilitam o manejo eficiente do uso da água na agricultura irrigada. Sendo os dados de evapotranspiração (ET) frequentemente utilizados como critério fundamental nas operações de irrigação, no cálculo do balanço hídrico e no zoneamento agroclimatológico. Portanto, a estimativa da evapotranspiração de cultura em escala regional, com base em imagens de satélite representam uma grande contribuição aos estudos referentes a gestão dos recursos hídricos, pois são capazes de propiciar a sua estimativa em áreas com grande heterogeneidade e dimensão, ao contrário de métodos micrometeorológicos e mesmo o de medidas diretas com lisímetros. Em relação a outros modelos que utilizam o balanço de energia, o SAFER (Simple Algorithm for Evapotranspiration Retrieving) possui uma parametrização mais simples, necessitando apenas de dados remotos de albedo, NDVI e temperatura de superfície. O SAFER tem ainda a vantagem adicional do uso de dados de ambos os tipos de estações agrometeorológicas, convencionais e automáticas. Essa característica é importante por possibilitar a avaliação das tendências históricas dos componentes do balanço de energia em larga escala ao longo dos anos, visto que sensores automáticos são avanços relativamente recentes na tecnologia instrumental. Considerando-se a recente elaboração do SAFER, não existem muitos estudos comparativos de avaliação do seu desempenho. Dessa forma, os objetivos deste estudo foram: estimar a evapotranspiração de cultura e seu respectivo Kc nas diferentes fases fenológicas, em áreas de cultivo sem restrição hídrica na região do Cerrado goiano, aplicando técnicas de sensoriamento remoto, para validação do modelo SAFER em comparação com o método padrão FAO 56, utilizando monitoramento agrometeorológico e após a avaliação da confiabilidade do modelo, realizar um comparativo entre o método de estimativa de ETreal obtida pelo SAFER, com o balanço hídrico climatológico e o balanço de água no solo em uma área de sequeiro de forma a validar a metodologia proposta como uma alternativa aos métodos tradicionais. A estrutura deste estudo é a seguinte: após a introdução e revisão bibliográfica sobre o tema, no primeiro capítulo são apresentados os dados da calibração do SAFER e sua aplicação nas culturas de feijão, tomate, cana-de-áçucar e trigo no Cerrado goiano, tomando-se como referência as estimativas de requerimento hídrico utilizando a metodologia da FAO; e em seguida, após comprovação de eficiência, no segundo capítulo são apresentados os resultados da aplicação do SAFER em uma área de sequeiro cultivada com cana-de-áçucar de forma a apresentá-lo como uma alternativa aos métodos tradicionais.
27

Settlement calculation for lime/cement column improved clay : Analytical and numerical analyses related to a case study

Yederulh, Hulumtaye Kefyalew January 2018 (has links)
The dry deep mixing method is widely used to improve a soft clay soil to increase the shear strength as well as to reduce the time for consolidation. It is a mechanical mixing process that makes parts of the soil stiffer than its original strength. It is mainly applicable to soft clay or peat soil.   In this master thesis, the objective was set to perform a comparative analysis on the prediction of the settlements of a clay soil improved by lime/cement columns (LCC). The theoretical settlement predictions were made using two analytical and numerical modeling. A case study was carried out on a part of Stockholm bypass project where LCC was applied to improve soft clay for a foundation of a concrete trough. Field measurements of the vertical deformation of the improved soil were performed using settlement plates to compare the analytical and numerical results. The first analytical method was performed based on the recommendation of TK Geo 13 (2013) while the second method was performed based on the concept of a composite ground. In the case of the numerical method, FEA was performed using 2D plane strain model in Plaxis simulation. The performance of the geometry and combined matching models were investigated to convert the axisymmetric to plane strain model. The variation in stiffness of the columns were taken into consideration by applying two stiffness values 30 and 33 MPa for the upper and lower half of the column respectively. A preload of 58 kPa was applied on the improved clay soil to simulate the time-dependent consolidation settlement due to the stress addition. A comparison was carried out between the results obtained from the analysis and a field measurement. The two analytical methods produced a better agreement with the field measurement regarding long-term consolidation settlement and a reasonable agreement concerning the rate of consolidation. The numerical analysis showed a good agreement with the benchmark concerning both the long-term consolidation settlement as well as the rate of consolidation. The geometry matching model gave a reasonable result regarding correctness of the result compared with the combined matching. Based on the results obtained in this study, the numerical methods had a better agreement with the measurements. / Jordförstärkning med kalkcementpelare är en vanlig metod för förstärkning av lösa jordar genom ökning av den blandade jordens hållfasthet samt minskning av konsolideringstiden. Metoden är en mekanisk process som ökar jordens styvhet och är främst tillämpbar i lös leror men även organiska jordar.   Detta examensarbete har syftat till att jämföra sättningsberäkningar i lera som är förstärk med KC-pelare. De teoretiska beräkningarna har utförts genom två analytiska modeller samt numerisk modellering. En fallstudie har utförts på del av Förbifart Stockholm där jordförstärkning av lös lera med KC-pelare har använts inför grundläggning av ett betongtråg. Resultat från fältmätningar av installerade markpeglar har jämförts med resultat från de teoretiska sättningsberäkningarna.   Den första beräkningsmetoden utfördes i enlighet med rekommendationer från TK Geo 13 (2013) och den andra metoden är baserad på principer för kompositjordar. Den numeriska beräkningen har utgjorts av FEM-modellering i 2D i programmet Plaxis. För att anpassa en plan-töjningsmodell till en axialsymmetrisk modell har inverkan av geometrin samt kombinerad anpassning av modell studerats. Hänsyn har tagits till KC-pelarnas styvhet genom att använda två olika värden (30 resp. 33 MPa) för KC-pelarnas övre respektive undre del. En överlast om 58 kPa applicerades på KC-pelarförstärkt området för att påskynda den tidsberoende konsolideringssättningarnas förlopp som orsakas av överlastens tillskottspänningar.   Baserat på resultat från uppmätta sättningar jämfört med beräkningar, har följande slutsatser dragits. Jämförelser mellan resultaten har visat på en rimlig överrensstämmelse mellan de två analytiska metoderna och utförda fältmätningar avseende långtids konsolideringssättningar. Den numeriska beräkningen har visat en god överensstämmelse med fältmätningar med hänsyn till både konsolideringssättningar och konsolideringsgraden. Den geometriskt anpassade modellen visade ett rimligare resultat i förhållande till den kombinerade anpassade modellen. Sammanfattningsvis bedöms det att den numeriska modelleringen stämmer bättre överens med resultaten från uppmätta sättningar i förhållande till analytiska beräkningar.
28

Olika motortypers påverkan på Sveriges transportflygskapacitet : En komparativ analys av Lockheed Martin C-130J Super Hercules och Embraer KC-390 / Impact of different types on Sweden's air transport capacity : A comparative analysis of Lockheed Martin C-130J Super Hercules and Embraer KC-390

Hugo, David January 2018 (has links)
Sverige har idag några av Europas äldsta militära transportflygplan av typen TP 84 Lockheed Martin C-130H Hercules. Försvarsmakten har beslutat om att modifiera flygplanen så att de kan fortsätta att flyga fram till 2030 men på sikt måste ett nytt system köpas in. Uppsatsen avhandlar det beprövade flygplanet Lockheed Martin C-130J mot det nya Embraer KC-390. Analysen avhandlar en komparativ jämförelse mellan två olika transportflygplan samt systemens införande i Försvarsmakten. Fallet är en del av en jämförelse mellan flygplanen med turboprop-och turbofläktmotorer. Jämförelsen kommer att kopplas mot Andersson et al:s teori om militär nytta. Slutsatserna från analysen är att vid ett införande av C-130J kommer ett driftsäkert system med lång erfarenhet av att operera i konfliktzoner med provisoriska landningsbanor tillföras Försvarsmakten. Flygplanets prestanda och begränsningar är redan kända. Vid införandet av KC- 390 är uppgifterna om prestanda och begränsningar en osäkerhet då systemet ännu inte är i tjänst. Osäkerheter som förmågan att operera från provisoriska flygfält måste tas i beaktande. Dock är flygplanet bättre avseende räckvidd, lastkapacitet samt hastighet, detta på grund av flygplanets turbofläktmotorer. / This thesis considers the problem of Sweden currently having some of Europe's oldest military Hercules transport aircraft of the type TP 84 Lockheed Martin C-130H Hercules. The Swedish Armed Forces have decided to modify the aircraft to extend it to 2030, but in the long term a new system must be procured. This thesis deals with the proven aircraft Lockheed Martin C-130J compared to the new Embraer KC-390. The approach uses Andersson et al's theory of military utility to compare two different transport aircraft as well as the system's introduction into the Swedish Armed Forces. The case is part of a comparison of aircraft with turboprop against turbofan engines. The conclusions from the analysis are that the C-130J is an operational system with long experience of operating in conflict zones from provisional runways, and the aircraft's performance and limitations are already known. With the KC-390, performance and limit data are an uncertainty whilst the system is not yet in service; as is its ability to operate from temporary airports. However, this aircraft is better in terms of range, load capacity and speed, due to the aircraft's turbofan engines.
29

HipHopvideor : Från idé till färdig produkt

Nilsson, Anna, Svensson, Jeanette January 2005 (has links)
Vi, Anna Nilsson och Jeanette Svensson, valde att producera musikvideos under vårat kandidatarbete på Blekinge tekniska högskola. Detta eftersom vi båda har ett stort intresse till musik och rörlig bild. Vi valde att göra två stycken för att lära oss produktionens process grundligt och för att nu kunna jämför de båda och av detta ta lärdom. Den ena musikvideon gjorde vi till en skånsk duett som heter KC och den andra till Advance Patrol. Båda låtarna är inom genren hiphop. Vårt mål med projektet var att skapa två videos som inte följde den generella mallen för hiphop-videos. Med andra ord ville vi undvika häftiga bilar, smycken i massor och lättklädda tjejer. På denna punkt fick vi dock kompromissa lite med Advance Patrol. Vi valde att filma i miljöer med mycket färg, djup och kontraster och att efteråt lägga på effekter som förstärkte texternas budskap. We, Anna Nilsson and Jeanette Svensson, have produced music videos during the Bachelors thesis at Blekinge Institute of Technological. We chose to make music videos since we both have a big interest in music and motion picture. We chose to make two to get the most out of the working progress and to be able to compare them to each other and our own development. The first video we made was to a duett called KC and the second one was to Advance Patrol. Both songs are in the genre of hip hop. Our goal with the project was to create two videos that did not look like the general hiphop video with things such as cool cars, lots of jewelleries and girls with not much clothes. We had to compromise a little bit with Advance Patrol about this though. With interesting places that had nice colours, deep and contrasts we came to create great videos in our own way. We also added different kind of layers and effects to make the message in the lyrics clear to the viewer. We have achieved our goals much greater then we expected and have now many new experiences to take with us in our future projects. Vi har uppnått vårt mål och resultatet blev bättre än vi förväntat oss. Vi har fått många nya erfarenheter genom hela projektets tid som vi kommer att ha stor nytta av i framtida produktioner. / Detta är en reflektionsdel till en digital medieproduktion.
30

The use of silent substitution in measuring isolated cone- & rod- human electroretinograms. An electrophysiological study of human rod- and cone- photoreceptor activity derived using silent substitution paradigm

Kommanapalli, Deepika January 2019 (has links)
After over a decade of its discovery, the Electroretinogram (ERG) still remains the objective tool that is conventionally used in assessment of retinal function in health and disease. Although there is ongoing research in developing ERG- recording techniques, interpretation and clinical applications, there is still a limited understanding on how each photoreceptor class contribute to the ERG waveform and their role and/or susceptibilities in various retinal diseases still remains unclear. Another limitation with currently used conventional testing protocols in a clinical setting is the requirement of an adaptation period which is time-consuming. Furthermore, the ERG responses derived in this manner are recorded under different stimulus conditions, thus, making comparison of these signals difficult. To address these issues and develop a new testing method, we employed silent substitution paradigm in obtaining cone- and rod- isolating ERGs using sine- and square- wave temporal profiles. The ERGs achieved in this manner were shown to be photoreceptor-selective. Furthermore, these responses did not only provide the functional index of photoreceptors but their contributions to their successive postreceptoral pathways. We believe that the substitution stimuli used in this thesis could be a valuable tool in functional assessment of individual photoreceptor classes in normal and pathological conditions. Furthermore, we speculate that this method of cone/rod activity isolation could possibly be used in developing faster and efficient photoreceptor-selective testing protocols without the need of adaptation. / Bradford School of Optometry and Vision Sciences

Page generated in 0.0252 seconds