Pvc Tubes
Mostrando 1-12 de 24 artigos, teses e dissertações.
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1. Phytodesalination of a moderately saline soil combined with two inorganic amendments
ABSTRACT The shortage of water and the increasing salinity are the main limiting environmental factors that directly affect the establishment and the development of crops. In this research, phytodesalination capacity of Sesuvium verrucosum was evaluated alone and in combination with agricultural gypsum (CaSO4·2H2O) and Polisul-C, in order to remedy a modera
Bragantia. Publicado em: 13/12/2019
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2. Quality of sorghum silage with leucaena
ASTRACT. This study evaluated the effect of increasing levels of leucaena forage in sorghum: forage. In addition to pure sorghum, it was evaluated different levels of inclusion of leucaena (15, 30 and 50%) at the time of ensiling. Forage was ensiled in PVC tubes (100 mm diameter, 500 mm length) under the density of 500 - 600 kg m-3, a total of 20 silos were
Acta Sci., Anim. Sci.. Publicado em: 07/01/2019
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3. Addition of Urease Inhibitor Has No Effect on Ammonia Volatilization Following Soil Application of Poultry Litter or Organomineral Fertilizer, Unlike Urea
ABSTRACT Quantification of ammonia volatilization after addition of animal residues and nitrogen (N) mineral fertilizers to the soil is important for N management in fertilization programs. The objective of this study was to evaluate the effect of adding a urease inhibitor to N fertilizers to minimize ammonia losses following soil application. The experiment
Rev. Bras. Ciênc. Solo. Publicado em: 24/10/2016
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4. Evaluation of sugarcane laboratory ensiling and analysis techniques
The objective was to evaluate the effects of laboratory-silo type and method of silage extract production, respectively, on sugarcane silage fermentation and recovery of fermentation products. Sugarcane was mechanically harvested and ensiled in three different types of laboratory silos (five replicates): 9.7 × 30 cm PVC tubes with tight lids, equipped or un
R. Bras. Zootec.. Publicado em: 2014-04
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5. Passifloras silvestres: área foliar, relações alométricas e potencial como porta-enxerto do maracujazeiro-amarelo / Wild passifloras: leaf area, allometric relationships and potential as a rootstock of yellow passion
The objectives of this work were to develop linear models that allow to predict leaf area of P. alata, P. coccinea, P. gibertii, P. ligularis, P. misera, P. mucronata, P. nitida and P. setacea by using simple linear measurements; to quantify growth traits and allometric relationships of P. cincinnata, P. edulis f. flavicarpa, P. gibertii, P. morifolia and P.
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 21/12/2011
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6. Fermentation parameters, quality and losses in sugarcane silages treated with chemical additives and a bacterial inoculant
The objective of this trial was to evaluate chemical additives and a bacterial inoculant on the inhibition of alcoholic fermentation and reduction of losses in sugarcane silages. Treatments were (doses on a fresh forage basis): without additive (control); urea (10 g/kg); urea (5 g/kg) + sodium benzoate (0.5 g/kg); sodium benzoate (1 g/kg); urea + ammonium su
Revista Brasileira de Zootecnia. Publicado em: 2011-11
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7. Cell toxicity in vitro analysis of PVC tubes consecutively submitted to gamma-rays and ethylene oxide sterilization / Análise in vitro da toxicidade celular de tubos de PVC esterilizados consecutivamente em raios gama e óxido de etileno
In 1967, a letter sent to the British Medical Journal reported that the re-sterilization with Ethylene Oxide (EtO) of previously irradiated Polyvinyl Chloride (PVC) formed large amounts of ethylene chlorohydrin, a highly toxic compound. Even though it did not present measured data, this letter initiated a controversy that still divide the opinion of research
Publicado em: 2010
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8. Análise do desempenho térmico de um sistema de aquecimento solar utilizando coletor com superfície absorvedora em chapas de PVC
Its presented a solar collector to be used in a system for heating bath water, whose main characteristic is its low cost. The collector consists of five plates of PVC with 10 mm thick, 200 mm in width and 1400mm in length, with an area equal to 1.4 square meters. The plates were connected in parallel to the ends of PVC tubes of 40 mm and 32
Publicado em: 2009
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9. Estudo térmico de um sistema solar de aquecimento de água residencial para duas configurações de superfície absorvedora
It presents a solar collector to be used in a system for heating water for bathing, whose main characteristics are its low cost and easy manufacturing and assembly. The absorbing surface of the collector is formed by an aluminum plate with eight flaps where they lodge PVC pipes. The catchment area of solar radiation corresponds to 1.3 meters. The collector b
Publicado em: 2009
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10. Construção de um sistema simples e compacto de recirculação d'água sob pressão para trompa d'água
Vacuum pumps are very useful in physical, chemical and biological experiments. In this communication it is described the design of a compact and low cost water recirculating system employing a water-jet aspirator pump as the vacuum source. The system requires only a water pump, water-jet aspirator pump, commercial PVC water tubes and a drain connection.
Química Nova. Publicado em: 2009
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11. Projeto, construção e análise de desempenho de coletores solares alternativos utilizando garrafas pet
Apresenta-se um sistema de aquecimento de água solar através do uso da energia solar, trabalhando em regime de termossifão, constituído por um ou dois coletores, coletores alternativos e um reservatório armazenador de água também alternativo, cuja principal finalidade é socializar o uso da energia principalmente para ser utilizada por populações de
Publicado em: 2008
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12. Simuladores para medição de fluxo de liquidos por efeito doppler para controle de qualidade de equipamentos de ultra-sonografia / Doppler phantoms for flow measurement of liquids for ultrasond equipment quality control
In this work it is proposed the development of phantoms to allow de quality control of ultrasounds equipments functioning on the Doppler mode with national technology and accessible cost. The device consists of a hydraulic circuit with a peristaltic pump, mixture simulating human tissue, tubes simulating arteries and blood-mimicking fluid. The peristaltic di
Publicado em: 2008