Perforated Plates
Mostrando 1-11 de 11 artigos, teses e dissertações.
-
1. Occurrence of Amblycerus species in Cordia trichotoma seeds and their influence on germination
ABSTRACT Forest species can have their seeds damaged by granivorous insects, especially by those in their larval stage. In this context, this study aims to report the occurrence of Amblycerus species in Cordia trichotoma seeds, to describe their main damage to seeds and effects on germination, as well as their associated hymenopteran parasitoids. Therefore,
Rev. Bras. entomol.. Publicado em: 05/09/2019
-
2. GRANULOMETRY AND ENERGY CONSUMPTION AS INDICATORS OF DISINTEGRATION EFFICIENCY IN A HAMMER MILL ADAPTED TO EXTRACTING ARROWROOT STARCH (Maranta arundinacea) IN COMPARISON TO STARCH EXTRACTION FROM CASSAVA
ABSTRACT The commercial sector of starch extraction has fully automated plants with a minimum scale of 200 ton.day–1, which extracts starch from maize and cassava in Brazil. Although these starches are commodities, the market demands starches with special properties obtained without chemical modifications. A higher-priced starch can compensate for small-sc
Eng. Agríc.. Publicado em: 19/06/2019
-
3. Study About Buckling Phenomenon in Perforated Thin Steel Plates Employing Computational Modeling and Constructal Design Method
Abstract Perforated steel thin plates are commonly used in structural engineering. Due to their geometric characteristics, these panels can suffer the undesired buckling phenomenon. In this context, the present work associates the computational modeling and the constructal design method to evaluate the influence of the geometric configuration in the plate bu
Lat. Am. j. solids struct.. Publicado em: 2016-10
-
4. Stress concentration around perforations produced by corrosion in steel storage tanks
This paper presents numerical results of stress concentration factors for plates perforated by corrosion. Evidence from 25 plates with corrosion perforation considered show that typical shapes may be characterized as a deviation from an ellipse or from a circle. In order to model typical perforations created by this type of corrosion, holes with non-circular
Lat. Am. j. solids struct.. Publicado em: 2014
-
5. Glulam-concrete composites: experimental investigation into the connection system
Timber-concrete composite structures work appropriately when a suitable connection system is included because the degree of interaction between the materials stiffs the structural system. Thereby, it is extremely important to improve the knowledge about their connection system. The purpose of this paper is to show the results obtained by experimental investi
Materials Research. Publicado em: 26/01/2011
-
6. Low molecular weight lignosulfonates recovery by nanofiltration / Estudo da recuperação de lignossulfonatos de baixa massa molar por nanofiltração
Membrane separation processes like ultrafiltration (UF) and nanofiltration (NF) are used in the pulp and paper industry to the recovery of several species present in the wood digest waste that are interesting to other applications as lignin, sugars and specially lignosulfonates, improving the recirculation of the water in the pulping process and the reductio
Publicado em: 2007
-
7. Evaluation of perforated plates for flow distribuition in Eletrostatic Precipitators with computational fluid dinamics / Avaliação do uso de placas perfuradas para distribuição de fluxo em precipitadores eletrostáticos, utilizando a dinâmica dos fluidos computacional
O precipitador eletrostático é um equipamento utilizado para redução da concentração de material particulado em gases industriais emitidos para a atmosfera. Para uma remoção eficiente das partículas, é reconhecida a necessidade de uma distribuição de velocidades uniforme na zona de tratamento do equipamento. Esta distribuição uniforme é obtida
Publicado em: 2007
-
8. Estudo comparativo da densidade radiográfica de diferentes cimentos odontológicos restauradores à base de ionômero de vidro. / Comparative Study of different density radiographic restorative dentistry cement- based glass ionomer.
Glass ionomer cements are generally represented by a combination of a powder, which main components are alumina (Al2O3 ), silica (Si2O3 ) and calcium fluoride (CaF2 ), and a liquid, which is an aqueous solution basically compound of polyacrilic acid and tartaric acid. Its excellent features have been described since the 1960s, and some of these are the radio
Publicado em: 2007
-
9. Estudo da influência de tensoativos em sistemas microemulsionados na extração de gálio e alumínio
Gallium is an important material used in the electronic industry whose demand in the world market is increasing in view of its potential applications. A selective technique is required to allow for the production of the metal, separated from aluminium. Due to the fact that microemulsions constitute an attractive alternative to metal extraction procedures, mi
Publicado em: 2005
-
10. Resistencia inicial a remoção, por tração axial, de parafusos de titanio, de 2mm de diametro, inseridos bicorticalmente em tibias de coelhos
The purpose of the present work was to evaluate the initial resistance to the removal through traction, of 2 mm diameter Titanium screws, inserted bicortically into the frozen tibias of 30 New Zealand Breed of rabbits. Thirty screws, 10 in each of 3 different commercial marks, were tested. All of them were made of pure Titanium. In all of the groups (I, II a
Publicado em: 1998
-
11. Estudo de um secador com promotores estaticos anulares de mistura
A Continuous Vertical Annular Static Mixer Dryer was constructed and studied (Industrial Patent 8700583). The equipment consisted on a cylindrical drying column constructed in transparent acrylics, and a fan that blowed the ambient air, which was heated by a set of electrical heaters. The air flow rate was controlled by changing the admission area of the fan
Publicado em: 1996