Boric Acid
Mostrando 1-12 de 63 artigos, teses e dissertações.
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1. Study of Crystallization and Composition on Silicon Oxycarbide (SiOC) and Silicon Boron Oxycarbide (SiBOC) Ceramics Obtained from Alkoxysilanes Precursors
This work deals on the preparation of silicon oxycarbide (SiOC) and silicon boron oxycarbide (SiBOC) ceramics from pyrolysis involving alkoxysilanes with different organic groups. Boron content, organic substituent and annealing time were evaluated on crystallization and composition of resulting ceramics. B-free precursors composed of methyltriethoxysilane (
J. Braz. Chem. Soc.. Publicado em: 2021-06
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2. Enurese noturna: uma condição comórbida,
ABSTRACT The present study presents the application of artificial neural network (ANN) to predict the modulus of rupture (MOR) and mass loss (ML) of the fire retarded fiberboard. Hence, the effect of adding the fire retardants including boric acid, borax and ammonium sulfate was evaluated on MOR and ML of fiberboard manufactured at different press temperatur
J. Pediatr. (Rio J.). Publicado em: 2020-06
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3. EVALUATION OF MECHANICAL AND FLAME RETARDANT PROPERTIES OF MEDIUM DENSITY FIBERBOARD USING ARTIFICIAL NEURAL NETWORK
ABSTRACT The present study presents the application of artificial neural network (ANN) to predict the modulus of rupture (MOR) and mass loss (ML) of the fire retarded fiberboard. Hence, the effect of adding the fire retardants including boric acid, borax and ammonium sulfate was evaluated on MOR and ML of fiberboard manufactured at different press temperatur
CERNE. Publicado em: 2020-06
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4. Production and quality of Sweet Grape tomato in response to foliar fertilization with boron
RESUMO A adubação com boro (B) do tomateiro pode ser feita fornecendo-se o nutriente via solo ou por meio de pulverização de soluções direcionadas às folhas. O uso de distintas fontes de B nas soluções pulverizadas nas folhas pode interferir na eficiência dessa fertilização, pois o desempenho de cada produto pode ser determinado pelas suas propri
Hortic. Bras.. Publicado em: 07/11/2019
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5. Meiotic Behavior and Pollen Viability of Spondias mombin L.: Native Fruit Species of the Amazon
ABSTRACT Spondias mombin L. is a fruit species native to the Amazon with great marketing potential. The aim of this study was to examine the meiotic behavior and pollen viability of S. mombin. Flower buds at various developmental stages were collected for analyses of pollen viability, in vitro germination, and meiotic behavior. S. mombin is diploid with 2n =
Floresta Ambient.. Publicado em: 15/07/2019
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6. Application of Factorial Design for Optimization of the Synthesis of Lactulose Obtained from Whey Permeate
There is a great interest in developing suitable alternatives for the utilization of whey, a by-product from cheese production that contains high concentration of lactose. These alternatives allow the transformation of whey into several products, reducing its environmental impact and providing gains to the dairy industry through the development of new produc
J. Braz. Chem. Soc.. Publicado em: 2017-12
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7. Boron Leaching Decreases withIncreases on Soil pH
ABSTRACT Management of boron fertilization depends on the magnitude of B leaching in the soil profile, which varies proportionally with the concentration of B in the soil solution, which, in turn, decreases as the soil pH increases due to the higher sorption of B on soil solid surfaces. The objective of this study was to quantify the effect of liming and rat
Rev. Bras. Ciênc. Solo. Publicado em: 26/04/2016
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8. Establishment of growth medium and quantification of pollen grains of olive cultivars in Brazil's subtropical areas
ABSTRACT Pollen grain germination in vitro indicates viability and consequently provides information related to fruit set. It also assists in the development of hybrids. Along with a suitable species, a standard culture medium is essential for evaluating pollen viability. It should contain a gelling agent consisting of carbohydrates and enhancer elements as
Bragantia. Publicado em: 24/11/2015
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9. Immobilization of phospholipase a1 using a polyvinyl alcohol-alginate matrix and evaluation of the effects of immobilization
The paper presents the synthesis and performance of an immobilized phospholipase A1 with practical application for oil degumming. The polyvinyl alcohol (PVA) had a number of properties indicating this polymer as a good enzyme carrier. The combination with alginate made a macro-porous structure, evidenced by SEM analyses. When the process time in boric acid s
Braz. J. Chem. Eng.. Publicado em: 2013-12
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10. Effects of boric acid and humate supplementation on performance and egg quality parameters of laying hens
In this study, the effects of boric acid and humate supplementation into hen diets on egg production and quality parameters and blood cholesterol levels were examined. For this aim, totally 160, 40 weeks of age, Hyline-White 98 layers were randomly divided into control and 3 treatment groups each containing 40 birds and 10 replicates (each with 4 birds). The
Rev. Bras. Cienc. Avic.. Publicado em: 2012-12
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11. Adubação boratada foliar na cultura de amendoim / Borated foliar fertilization in the cultivation of peanuts
This objective of this work was to study the effect of foliar application of boron on the peanut yield. The experiment was conducted from November 2010 to March 2011 in an Oxisol at Rubiacea, SP. It was studied four different rates of foliar boron applications in between 30 and 75 days after emergence (DAE), using boric acid as the source (17% B). The treatm
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 22/11/2011
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12. Organic and mineral fertilization and chemical composition of lemon balm (Melissa officinalis) essential oil
Melissa officinalis L., Lamiaceae, is an herb with great growth prospects in the cosmetic industry due to its essential oil. In order to improve its production, it is necessary to study related agricultural practices. This study evaluated the effect of organic and mineral fertilization on the chemical composition of lemon balm (Melissa officinalis L.) essent
Revista Brasileira de Farmacognosia. Publicado em: 07/10/2011