Diss. (sammanfattning) Uppsala : Sveriges lantbruksuniv., 2001. / Härtill 4 uppsatser.

Submitted by RAFAEL BARCELOS MENDONÇA null (rafael.irrigacao@gmail.com) on 2017-10-23T19:22:08Z No. of bitstreams: 1 Dissertacao_Rafael Barcelos_FINAL_CORRIGIDO_Ficha e Certidão.pdf: 4852226 bytes, checksum: acef517d0d7b0c74de18292d5f9ed725 (MD5) / Approved for entry into archive by Luiz Galeffi (luizgaleffi@gmail.com) on 2017-10-23T19:31:51Z (GMT) No. of bitstreams: 1 mendonca_rb_me_bot.pdf: 4852226 bytes, checksum: acef517d0d7b0c74de18292d5f9ed725 (MD5) / Made available in DSpace on 2017-10-23T19:31:51Z (GMT). No. of bitstreams: 1 mendonca_rb_me_bot.pdf: 4852226 bytes, checksum: acef517d0d7b0c74de18292d5f9ed725 (MD5) Previous issue date: 2017-08-25 / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) / A Zoysia japonica Steud, conhecida com grama esmeralda, é uma das principais gramas comercializadas no Brasil. Essa espécie apresenta boa capacidade de resistência à pisoteio sendo a espécie de grama da maioria dos gramados residenciais brasileiros. A utilização da irrigação para manutenção de gramados é um dos muitos gargalos no uso de água nas cidades. Uma opção para o suprimento de água e nutrientes da grama esmeralda é a utilização da água residuária doméstica, que é rica em nutrientes. Objetivou-se com esse trabalho estudar a lâmina mínima de água que preserve a qualidade visual do gramado, aplicada através dos métodos de irrigação por aspersão e gotejamento subsuperficial. O trabalho foi realizado no Departamento de Solos e Recursos Ambientais da Faculdade de Ciências Agronômicas de Botucatu – Unesp (Universidade Estadual Paulista “Júlio de Mesquita Filho”). O gramado foi estudado nos períodos do inverno e da primavera, com início em junho de 2016 e finalização em dezembro de 2016. O delineamento experimental adotado foi em blocos casualizados composto por 8 tratamentos e o controle, dispostos em parcelas subdivididas e quatro repetições. Os tratamentos consistiram em dois métodos de irrigação (aspersão e gotejamento subsuperficial – parcelas) e quatro lâminas de água residuária doméstica (50%, 100%, 150% e 200% da evapotranspiração média diária – subparcela) e o controle com água tratada fornecida pela Companhia de Saneamento – Sabesp de Botucatu/SP, repondo 100% da evapotranspiração média diária. Foram estudadas as seguintes características: concentração dos nutrientes no solo, massa seca das aparas, quantidade de nutrientes nas aparas, intensidade de cor verde, altura do gramado, tração do gramado, sistema radicular, e taxa de cobertura verde do gramado. Os resultados indicaram que através da aplicação de água residuária doméstica houve um aumento da massa de grama produzida, coloração verde, massa seca, altura e taxa de cobertura do gramado, para ambos os sistemas de irrigação, em vantagem o sistema de gotejamento por não conter contaminação excessiva no tecido vegetal por Escherichia coli. / The Zoysia japônica Steud, known as the emerald grass, is one of the most traded grass in Brazil. This specie show good capacity of trampling resistance being the grass specie from the major Brazilian residential lawns. The irrigation use for lawn maintenance is one of the many neck for water use in the cities. One option for water and nutrients supply of emerald grass is the use of domestic waste water, which is rich in nitrogen. This work aimed to study the minimum water line that preserves the lawn visual quality, applied through sprinkling and subsuperficial dribbling irrigation methods. The work was done at the Soil and Environmental resources department of the Agronomic Science College – UNESP (Sao Paulo state university “Júlio de Mesquita Filho”). The lawn was studied in winter and spring periods, initiating in june/2016 and ending in December/2016. The trail delineation adopted was randomized blocks composed by eight treatments and a control, disposed in subdivided parcels and four repetitions. The treatments consisted in two irrigation methods (sprinkling and subsuperficial dribbling – parcels) and four domestic waste water lines (50%, 100%, 150% and 200% of the daily mean evapotranspiration – subparcel) and the control with treated water supplied by the sanitation company – SABESP of Botucatu – SP, replacing 100% of the daily mean evapotranspiração. It was studied the following characteristics: soil nutrient concentration, shavings dry matter mass, shaving nutrient quantity, green color intensity, lawn height, lawn traction, radicular system, lawn green coverage rate. The results indicate that trough the domestic waste water application, there was an increase in produced lawn mass, green coloration, dry mass, lawn coverage height and rate for both the irrigation systems, leveraging the dribbling system. In dribbling irrigation method there was no excessive contamination in vegetal tissue by Escherichia coli.

Made available in DSpace on 2016-08-31T13:24:13Z (GMT). No. of bitstreams: 1 SauloSCP_DISSERT.pdf: 1780685 bytes, checksum: 26e2c64d2806193b0477447f02412ad2 (MD5) Previous issue date: 2013-12-12 / Conselho Nacional de Desenvolvimento Científico e Tecnológico / Brazil has high potential for forage production, rightfully be located in a tropical climate region. In the Brazilian Northeast irrigation of pastures has been implemented as a way to compensate for the lack of rain for most of the year.The scarcity of good quality waterand increasing their demand to meet the population growth has led to the use of water sources of lower quality, among which the saline water, very common in semiarid regions. Forage crops are considered tolerant plants to salinity, being variables of growth and production very important factors to study the effects caused by salt stress. TheCynodon spp. cv. Tifton 85 andTanzania grass (Panicum maximum) are forages that have gained prominence in recent years, are often recommended to feed animals worldwide. Thus, in order to evaluate the performance of Tifton 85 and Tanzania grasses with the use of saline water and of two irrigation methods, grown in Alfissolof the semiarid region of Mossoró RN, developed this research in greenhouse at UFERSA, in experimental design completely randomized, with treatments in a factorial, with four replications. Treatments included a combination of two irrigation methods (drip and sprinkler)with five salinity levels of irrigation water (S1=0,5; S2=1,5; S3=2,5; S4=3,5 e S5=4,5 dS m-1). Evaluated the yield components height (ALT), fresh biomass (FMF) and dry biomass (FMS) of shoots of Tifton 85 and Tanzaniagrasses, plus tiller number (NP) and leaf area (AF) of Tanzania grass.Monitoring was conducted soil salinity, being determined over the cycle the electrical conductivity of the saturation extract (CEes), the RAS and the pH of soils under grasses. In a generalized form, irrigation water with high salinity inhibited the growth of plants Tifton 85, reduced the FMF and FMS of Tifton 85 and Tanzania grasses and reduced the NP and AF Tanzania grass, however, is possible to obtain good yields CEa with a maximum of 2.8 dS m-1. The increase in salinity resulted in a linear increase of CEes and soil RAS, as well, caused a reduction in the soil pH. The method of drip irrigation method was superior to sprinkler irrigation in the production of Tanzania grass when using higher salinity water / O Brasil possui elevado potencial para a produção de forragem, justamente por localizar-se numa região de clima tropical. No Nordeste brasileiro a irrigação de pastagens tem sido implantada como forma de compensar a falta de chuvas na maior parte do ano.A escassez de água de boa qualidade e o aumento da sua demanda para atender ao crescimento da população tem provocado a utilização de fontes de águas de qualidade inferior, dentre as quais as águas salinas, muito comuns nas regiões semiáridas. As plantas forrageiras são consideradas plantas tolerantes à salinidade, sendo as variáveis de crescimento e produção fatores muito importantes parase estudar os efeitos provocados pelo estresse salino. O Cynodon spp. cv. Tifton 85 e o capim Tanzânia (Panicum maximum)são forrageiras que vêm se destacando nos últimos anos, sendo frequentemente recomendadas para alimentação de animais em todo o mundo.Assim, com o objetivo de avaliar o desempenho das gramíneas Tifton 85 e Tanzânia com o uso de água salina e dedois métodos de irrigação, cultivadas em Argissolo Vermelho Amarelo da região do semiárido de Mossoró RN desenvolveu-seesta pesquisa em casa de vegetação da UFERSA, em delineamento experimental inteiramente aleatorizado, com tratamentos em esquema fatorial, com quatro repetições. Os tratamentos consistiram da combinação de dois métodosde irrigação (gotejamento e aspersão) com cincos níveis de salinidade da água de irrigação (S1=0,5; S2=1,5; S3=2,5; S4=3,5 e S5=4,5 dS m-1). Avaliaram-se os componentes de produção altura (ALT), fitomassa fresca (FMF) e fitomassa seca (FMS) da parte aérea dos capins Tifton 85 e Tanzânia, além do número de perfilhos (NP) e área foliar (AF) do capim Tanzânia. Foi realizado monitoramento da salinidade do solo, sendo determinados ao longo dos ciclos a condutividade elétrica do extrato de saturação (CEes), o pH e a RAS do solo cultivado com as gramíneas. De forma generalizada, a água de irrigação de elevada salinidade inibiu o crescimento de plantas de capim Tifton 85, reduziu a FMF e a FMS dos capins Tifton 85 e Tanzânia e reduziu o NP e a AF do capim Tanzânia,porém, é possível obter boas produções com uma CEa máxima de 2,8dS m-1. O incremento na salinidade da água resultou em aumento linear da CEese da RAS do solo, bem como, provocou a redução no pH do solo. O método de irrigação por gotejamento foi superior ao método de irrigação por aspersão na produção de capim Tanzânia quando se utiliza água de maior nível de salinidade

Indiana University-Purdue University Indianapolis (IUPUI) / This in-vitro, prospective, randomized study microscopically compared the debridement efficacy of passive ultrasonic irrigation (PUI) using the Ultrasonic Bypass System and different irrigating protocols. Eighty extracted maxillary anterior teeth were randomly assigned to four groups. Teeth were instrumented using EndoSequence rotary instrument system and treated with passive ultrasonic irrigation with different irrigating regimens for one minute. Group one (control) was treated with hand/rotary instrumentation. Group two was treated with hand/rotary instrumentation followed by a one-minute PUI using the Ultrasonic Bypass System with 6.0-percent NaOCl. Group three was treated with hand/rotary instrumentation followed by a one-minute PUI using the Ultrasonic Bypass System with 17-percent EDTA. Group four was treated with hand/rotary instrumentation followed by a one-minute PUI using the Ultrasonic Bypass System with 30 seconds of 6.0-percent NaOCl and 30 seconds of 17-percent EDTA. Teeth were sectioned longitudinally and each half was divided into three equal parts from the anatomic apex. The half with the most visible part of the apex was used for SEM evaluation. A scoring system for debris and smear layer removal was used. Statistical analysis was performed using a Kruskal-Wallis test, which determines if there are any differences among the four groups. Following this test, a Wilcoxon Rank Sum test was used to compare each pair of groups. The addition of a one-minute PUI with the Ultrasonic Bypass System significantly enhanced the removal of smear layer when compared with the hand/rotary instrumentation with conventional irrigating solutions. The Ultrasonic Bypass System when used with the combination of 6.0-percent NaOCl and 17-percent EDTA after hand/rotary instrumentation significantly removed smear layer at the coronal, middle, and apical areas of a tooth when compared with all other groups. A one-minute PUI with the Ultrasonic Bypass System combined with NaOCl and EDTA is significantly better in smear removal and ultimately will result cleaner canal wall.

Indiana University School of Dentistry located on the campus of Indiana University-Purdue University Indianapolis (IUPUI) / This in-vitro, prospective, randomized study microscopically compared the debridement efficacy of negative pressure irrigation with the EndoVac (Discus Dental, Culver City, CA) versus the Canal CleanMax (Maximum Dental, Inc., Secaucus, NJ). Sixty extracted human canines were instrumented using a combination of hand-instrumentation with Lexicon K-type files and rotary instrumentation with ProTaper files. All canals were irrigated with 6.0-percent sodium hypochlorite and 17- percent ethylenediaminetetraacetic acid (EDTA). However, the irrigation/aspiration techniques differed among three groups of 20 randomly selected teeth. Group one (control) was irrigated with only a 12-ml Monoject syringe via 30-gauge side-vented, closed-end needle. Group two was irrigated with the EndoVac system. Group three was irrigated similar to group one, but with the adjunct of the Canal CleanMax system. All teeth were sectioned longitudinally, and the more intact sections were divided into coronal, middle, and apical thirds. Each portion of the canal was photographed with a scanning electron microscope (SEM). The photographs were scored by two independent examiners according to relative amount of debris and/or smear layer present, as well as relative number of patent dentinal tubules. These scores were statistically analyzed using a Krustal-Wallis test and Wilcoxon Rank Sum tests to determine differences between groups. The coronal aspect of root canal walls irrigated with the EndoVac system exhibited significantly less debris and/or smear layer present when compared to the coronal aspect of root canals irrigated with only a standard 12-ml Monoject syringe equipped with 30-gauge ProRinse side-vented, closed-end needle (control). There were no other significant differences in scores between any groups at any location. For all locations combined, the EndoVac system produced significantly cleaner root canal walls as compared to the control. No significant differences were seen between the Canal CleanMax and Control or Canal CleanMax and EndoVac. This study suggested negative pressure irrigation delivery with the EndoVac system during and after hand-rotary instrumentation is more effective in removal of debris and smear layer from the coronal third and combined thirds of root canal walls compared to irrigation with a standard 12-ml Monoject syringe equipped with 30-gauge ProRinse side-vented, closed-end needle.