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Alimentation expérimentale de l'huître Crassostrea gigas à l'aide de navicules bleus Haslea ostrearia (Simonsen) de différentes tailles ArchiMer
Barille, Laurent; Bougrier, Serge; Geairon, Philippe; Robert, Jean-michel.
The influence on the feeding physiology (clearance, filtration, ingestion, absorption) of the Japanese oyster Crassostrea gigas of low concentrations of suspended particulate matter (SPM ranging from 2 to 20 mg.l-l) and high food quality (mean organic fraction =54 %) was studied in the laboratory. Experimental diets were made up with three strains of the "blue diatom" Haslea ostrearia, which is responsible of the greening of oyster-ponds. The strains were characterized by different sizes (48, 65 and 98 µm respectively) but possessed the same density and biochemical composition. Clearance rate was found constant at 2.2 1.h(-l).g-l dry weight and therefore was not influenced by increasing seston load. Pseudofaeces production was observed for SPM...
Tipo: Text Palavras-chave: Taille des particules; Qualité alimentaire; Haslea ostrearia; Crassostrea gigas; Alimentation; Particle size; Food quality; Haslea ostrearia; Crassostrea gigas; Feeding.
Ano: 1994 URL: http://archimer.ifremer.fr/doc/1994/publication-3070.pdf
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Anais. Infoteca-e
SIMPÓSIO SOBRE GRANULOMETRIA DE INGREDIENTES E RAÇÕES PARA SUÍNOS E AVES, 1998, Concórdia..
Granulometria de rações: aspectos fisiológicos; Influência de ingredientes de dietas no desenvolvimento de lesões gástricas em suínos; Granulometria do milho em rações para suínos e aves: digestibilidade de nutrientes e desempenho animal; Granulometria de microcomponentes para rações de suínos e aves; Implicações da granulometria de ingredientes na qualidade de peletes e na economia da produção de rações; Tamanho das partículas de milho moído para rações e como medi-las facilmente através do granulômetro.
Tipo: Documentos (INFOTECA-E) Palavras-chave: Suíno; Ave; Ração; Ingredientes; Granulometria; Swine; Poultry; Ration; Ingredients; Particle size.
Ano: 1998 URL: http://www.infoteca.cnptia.embrapa.br/handle/doc/433785
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Analysis of defects in coffee beans compared to biplots for simultaneous tables Rev. Ciênc. Agron.
Brighenti,Carla Regina Guimarães; Cirillo,Marcelo Angelo.
ABSTRACT The demand for high quality coffee has become a consolidated criterion to achieve the best prices. Currently, cooperatives evaluate the coffee beans mainly through the particle size and the number of defects in the sample. This evaluation type generates counting data that originates contingency tables from different periods or groups involving the same variables in the row and column and there may be interest in knowing if two tables are related and how much are related. These are the so-called combined tables. Statistical analysis techniques normally employed do not include categorical data in the combined tables. The aim of this study was to evaluate the incidence of different types of defects in samples of large flat coffee beans in two...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Coffea arabica L.; Coffee quality; Particle size; SVD; Sieves.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902018000100062
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Assessment of physical and physicochemical quality of main chocolates traded in Peru Acta Agron. (Palmira)
Chire-Fajardo,Gabriela Cristina; Valdivia-Arrunategui,Rocío Alicia; Orihuela-Rivera,Carmen Adela; Ureña- Peralta,Milber Oswaldo.
Abstract: The quality of the main chocolates marketed in Peru was determined. The physical aspect: color (C *, H *, IB), hardness and particle size, as well as physicochemical: water activity (aw), moisture, fat and ash, correlating with the declaration of ingredients presented in the packaging. We evaluated 30 experimental units of chocolates (imported, domestic, dark chocolate and milk) by experimental methods, randomly acquired from different establishments. The difference between color and hardness by origin was attributed to the dairy component. Dark chocolate had lower values of color components (8.75 ± 0.94 C *, 7.60 ± 4.71 H * and 28.46 ± 0.86 IB) than milk constituents (15.04 ± 2.78 C, 34.59 ± 7.46 H * and 34.55 ± 2.87 IB) and in hardness values...
Tipo: Journal article Palavras-chave: Ash; Color; Fat; Moisture; Particle size; Texture; Water activity.
Ano: 2017 URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-28122017000200164
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Automated static image analysis as a novel tool in describing the physical properties of dietary fiber Ciênc. Tecnol. Aliment.
KUREK,Marcin Andrzej; PIWIŃSKA,Monika; WYRWISZ,Jarosław; WIERZBICKA,Agnieszka.
Abstract The growing interest in the usage of dietary fiber in food has caused the need to provide precise tools for describing its physical properties. This research examined two dietary fibers from oats and beets, respectively, in variable particle sizes. The application of automated static image analysis for describing the hydration properties and particle size distribution of dietary fiber was analyzed. Conventional tests for water holding capacity (WHC) were conducted. The particles were measured at two points: dry and after water soaking. The most significant water holding capacity (7.00 g water/g solid) was achieved by the smaller sized oat fiber. Conversely, the water holding capacity was highest (4.20 g water/g solid) in larger sized beet fiber....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Dietary fiber; Particle size; Hydration properties; Automated static image analysis.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612015000400620
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Chemical and physical characterization of Opuntia spp. seeds grown in Hidalgo State, Mexico Ciencia e Investigación Agraria
Prieto-García,Francisco; Prieto Méndez,Judith; Acevedo Sandoval,Otilio A; Canales Flores,Roberto A; Marmolejo Santillán,Yolanda.
Nopal fruits (Opuntia spp.) represent a valuable food in various Latin America countries. Typically, the seeds are discarded. However, they could contain basic components that might enable their use as a nutritional supplement or as another product convenient for the food industry. The objective of this paper was to perform a physical and chemical characterization of the seeds of three species of Opuntia (O. Heliabravoana, O. Xoconostle, and O. ficus-indica) to provide data that will help determine their potential use. Fruits were collected in different municipalities of Hidalgo State, Mexico; its seeds were extracted, dried, and analyzed. The results reveal that, except for small differences, the seeds had similarity in the physical characteristics of...
Tipo: Journal article Palavras-chave: Cactaceae; Electron microscope; Heavy metals; Particle size; Prickly pear; Proximal analysis.
Ano: 2016 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202016000100013
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Computer simulation of a Rietema-family hydrocyclone used in irrigated agriculture1 Rev. Ciênc. Agron.
Tonin,Paulo César; Dantas Neto,José; Santos,José Airton Azevedo dos.
The hydrocyclone is a centrifugal separator that has been used for over 50 years in the chemical processing and mining industries. In irrigated agriculture in Brazil it is not used as often. One reason for this is the poor understanding by designers of the complex phenomena involved in the internal flow of the hydrocyclone, and the lack of knowledge of new computational tools available on the market. This study evaluates the use of Computational Fluid Dynamics (CFD) as a potential tool to be used in the design and optimisation of hydrocyclones used in irrigated agriculture. A 50 mm Rietema-family hydrocyclone is simulated using CFD. The turbulent flow inside the hydrocyclone is modelled using the Reynolds Stress Model, and a Eulerian approach is employed...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Pre-filtering; Computational fluid dynamics; Multiphase flow; Particle size.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902015000100038
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Corn grain processing improves chemical composition and fermentative profile of rehydrated silage Animal Sciences
Silva, Marlon Richard Hilário da; Jobim, Clóves Cabreira; Neumann, Mikael; Osmari, Milene Puntel.
This study evaluated the effects of the rehydration and ensiling of corn grain with two geometric mean diameters (GMD) of 0.55 and 1.83 mm obtained by the diameter of the sieved used on the fermentation characteristics and chemical composition of the silage. The experimental design was completely randomized with two treatments and six replications, as follows: rehydrated fine-corn grain silage (RFS) and rehydrated coarse-corn grain silage (RCS). Ground corn was rehydrated with water to achieve moisture levels close to 350 g kg-1. There was no effect on the dry matter recovery, though the recovery rate was high, with values greater than 97% in both silages. The particle size influenced the fiber content, with lower values in the RFS. The acetic and lactic...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Organic acids; Particle size; Processing grain; Storage losses..
Ano: 2018 URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/42564
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Corn texture and particle size in broiler diets Rev. Bras. Ciênc. Avic.
Benedetti,MP; Sartori,JR; Carvalho,FB; Pereira,LA; Fascina,VB; Stradiotti,AC; Pezzato,AC; Costa,C; Ferreira,JG.
The objective of this study was to evaluate the effect of corn texture and the particle size on broiler performance, carcass yield, nutrient digestibility, and digestive organ morphometrics. In Experiment I, 720 male Cobb chicks were distributed in a completely randomized experimental design with a 2 x 3 factorial arrangement, consisting two corn textures (dented and hard) and three corn particle sizes, was applied, with four replicates of 30 birds each. Corn particle size was classified according to geometric mean diameter (GMD) as fine - 0.46 mm; medium - 0.73 mm, and coarse - 0.87 mm. In Experiment II, 120 broiler chicks were used to evaluate corn digestibility during the periods of 16 to 22 days and 35 to 41 days of age, using the method of total...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Carcass traits; Digestibility; GMD; Particle size; Performance.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2011000400002
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Determination of metabolizable energy value of corn with different average geometric diameters for european quails (Coturnix coturnix coturnix) BABT
Rezende,Marcelo José de Mello; Torres,Alessandro Figueiredo; Murata,Luci Sayori; Garcia,José Américo Soares; McManus,Concepta Margaret.
Metabolizable energy (ME) of corn with different geometric diameters was determined in European quail with 26 days of age with 124 g of mean live weight, using the Total Collection of Excreta Method. One hundred and twenty five quails were divided in five treatments, five replications with five quails each, with one treatment used to determine endogenous losses. Values of Average Geometric Diameter (AGD) of the corn were 600, 800, 1000 and 1200 µm. ME of corn was not affected by AGD. Average values were 3079, 3274, 3300, 3137 Kcal/kg respectively for apparent metabolizable energy, corrected apparent metabolizable energy, true metabolizable energy, corrected true metabolizable energy.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Metabolizable apparent energy; Metabolizable true energy; Particle size; Total collections of excreta.
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132009000400022
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Determination of methanesulfonic acid and non-sea-salt sulfate in single marine aerosol particles OMA
Kolaitis, L.N.; Bruynseels, F.; Van Grieken, R.; Andreae, M.O..
In open ocean waters the predominant volatile sulfur compound is dimethyl sulfide (DMS), representing almost 90% of the marine sulfur emissions. Methanesulfonic acid (MSA), one of the oxidation products of DMS, is consequently an important constituent of marine aerosols. Laser microprobe mass analysis (LAMMA) has been used for single-particle analysis of particles collected in the marine boundary layer. MSA, like the non-sea-salt sulfate, is mainly associated with the smallest aerosol particles, whose LAMMA spectra match the reference fingerprint spectra of MSA salts, sodium methanesulfonate and ammonium methanesulfonate. The presence of nitrate and heavy metal ions in the LAMMA spectra can reveal, to a certain extent, the degree of air pollution at the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Aerosols; Air pollution; Boundary layers; Heavy metals; Marine environment; Nitrates; Particle size; Sulphates.
Ano: 1989 URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3177
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Effect of physical properties on the specific heat preserved ground sheanut kernel (BUTYROSPERNUMPARADOXUM) CIGR Journal
H.U., Nwannewuihe; M. C., Onwukwe; J.C., Edeh; N. I., Nwagugu; J.N., Nwakaire.
Most agricultural materials undergo various forms of preservation in order to enhance shelf life. Sheanut is usually preserved by heating the kernels over fire in a pot for a time period. This affects its properties especially during heat processing. It is expected that this work will provide information that would help optimize such processing. Preserved sheanut kernel samples sourced locally were prepared by manually cleaning, sorting, grinding and sieving to obtain desired particle sizes. The specific heat of the samples were evaluated as a function of particle size (2.36 mm), (1.18 mm and 1.00 mm), moisture content (initial moisture content, 10%, 20%, 30% and 40% db) and temperature (50oC, 60oC, 70oC, 80oC, and 90oC). The specific heat of each particle...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Power system Engineering specific heat; Particle size; Moisture content; Temperature; Sheanut.
Ano: 2016 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3800
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Effect of size reduction on colour, hydration and rheological properties of wheat bran Ciênc. Tecnol. Aliment.
ONIPE,Oluwatoyin Oladayo; BESWA,Daniso; JIDEANI,Afam Israel Obiefuna.
Abstract The aim of this study was to determine the effect of size reduction of wheat bran (WB) on water holding capacity (WHC), water retention capacity (WRC), swelling capacity (SC); rheological and colour properties. Coarse WB exhibited the highest mean values for WHC (6.49 g/g), WRC (5.76 g/g), SC (7.67 g/g) and OHC (4.23 g/g), while these values were significantly reduced in fine WB. Size reduction increased lightness of WB as indicated by high L* values (62.65 to 75.80), Hue angle of 74.63 and whiteness index value of 81.42. Increasing WB additions increased water absorption of dough from 63 to 70.2%, while dough stability decreased from 12.5 min to 6.80 min. As coarse WB addition increased from 1 to 15 g extensibility decreased from 419 BU to 283 BU...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Wheat bran; Rheology; Colour profile; Hydration properties; Mixing tolerance; Particle size.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000300389
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Effect of the calcium level and limestone particle size on the performance of semi-heavy layers in the second cycle of egg production Rev. Bras. Ciênc. Avic.
Pizzolante,CC; Garcia,EA; Laganá,C; Saldanha,ESPB; Deodato,AP; Faitarone,ABG; Scherer,MR; Batista,L.
An experiment was carried out at the Research and Development Unit of Brotas aiming at evaluating dietary calcium level and limestone particle size on the production performance of commercial (Hy-Line Brown) layers in the second lay cycle. Experiment duration was 112 days. A total number of 288 hens, with 83 weeks of age in the beginning of the experiment, were used in a completely randomized experimental design in a factorial arrangement of 2x3, with two calcium levels (3.5 and 4.0%) and three limestone particle size compositions: 100% fine limestone (FL), 30% coarse limestone (CL) + 70% fine limestone (FL), and 50% (CL) + 50% (FL), with six replicates of eight birds each. Egg weight (g), egg production (%), egg mass (%), feed intake (g), feed conversion...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Calcium; Laying hens; Limestone; Particle size; Performance.
Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2006000300006
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Effectiveness of fused magnesium potassium phosphate for marandu grass Rev. Bras. Ciênc. Solo
Orioli Júnior,Valdeci; Coutinho,Edson Luiz Mendes.
The current high price of KCl and great dependence on importation to satisfy the Brazilian demand indicate the need for studies that evaluate the efficiency of other K sources, particularly those based on domestic raw material. For this purpose, a greenhouse experiment was conducted with samples of a sandy clay loam Typic Haplustox, in a completely randomized 4 x 3 x 2 factorial design: four K rates (0, 60, 120, and 180 mg kg-1), three sources (potassium chloride (KCl), fused magnesium potassium phosphate (FMPP) and a mixture of 70 % FMPP + 30 % KCl) and two particle sizes (100 and 60 mesh), with three replications. Potassium fertilization resulted in significant increases in shoot dry matter production and in K concentrations, both in soil and plants. The...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Brachiaria brizantha; Particle size; Critical level.
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832009000600034
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Eficiencia relativa de fracoes granulometricas de calcarios sul-mato-grossenses. Repositório Alice
KURIHARA, C.H.; MAEDA, S.; HERNANI, L.C.; SILVA, W.M..
Em Mato Grosso do Sul, existem jazidas de calcarios provenientes de rocha sedimentar, aos quais sao atribuidos empiricamente maior reatividade inicial em relacao aos calcarios de rocha metamorfica. Na Embrapa-Centro de Pesquisa Agropecuaria do Oeste (CPAO), em Dourados, MS, avaliou-se, em casa de vegetacao, a eficiencia relativa de fracoes granulometricas de calcarios, em Latossolo Vermelho-Escuro alico franco-areno-argiloso e Latossolo Roxo distrofico muito argiloso. Em cada solo, aplicou-se dose de calcario estimada para elevar o pH em CaCl2 para 6,0. Os tratamentos, dispostos em delineamento inteiramente ao acaso, consistiram de: testemunha sem calcario e a aplicacao de quatro fracoes granulometricas (malhas de 4,00 a 2,00; 2,00 a 0,84; 0,84 a 0,30 e...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Reatividade; Incubacao; PH do solo; Material de origem; Sedimentar; Metamorfica; Tamanho de particula; Reactivity; Incubation; Soil pH; Parent material; Sedimentary rocks; Metamorphic rocks; Particle size.
Ano: 1999 URL: http://www.alice.cnptia.embrapa.br/handle/doc/100720
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Freeze-drying of ampicillin solid lipid nanoparticles using mannitol as cryoprotectant BJPS
Alihosseini,Faezeh; Ghaffari,Solmaz; Dabirsiaghi,Ali Reza; Haghighat,Setareh.
abstract Solid lipid nanoparticles (SLNs) are interesting colloidal drug-delivery systems, since they have all the advantages of the lipid and polymeric nanoparticles. Freeze-drying is a widely used process for improving the stability of SLNs. Cryoprotectants have been used to decrease SLN aggregations during freeze-drying. In this study Ampicillin was chosen to be loaded in a cholesterol carrier with nano size range. To support the stability of SLNs, freeze-drying was done using mannitol. Particle size, drug release profile and antibacterial effects were studied after freeze-drying in comparison with primary SLNs. Preparations with 5% mannitol showed the least particle size enlargement. The average particle size was 150 and 187 nm before and after...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Solid lipid nanoparticles; Stability; Cryoprotectant; Freeze-drying; Antibacterial efficacy; Particle size.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502015000400797
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In situ estimation of indigestible compounds contents in cattle feed and feces using bags made from different textiles R. Bras. Zootec.
Valente,Tiago Neves Pereira; Detmann,Edenio; Valadares Filho,Sebastião de Campos; Cunha,Maura da; Queiroz,Augusto César de; Sampaio,Cláudia Batista.
The objective of this experiment was to evaluate estimates of concentration of indigestible dry matter (iDM), indigestible neutral detergent fiber (iNDF) and indigestible acid detergent fiber (iADF) in samples of cattle feed and feces processed at different particle sizes (1-, 2-, and 3-mm) using bags made from nylon (50 μm), F57 (Ankom®), and non-woven textile (NWT - 100 g/m²) in a in situ evaluation procedure. Eight samples of concentrates, seven samples of forages and two samples of cattle feces were used. The samples were put in the bags according to a ratio of 20 mg of dry matter/cm² of surface by using three bags of each textile for each size of particle, totaling 405 bags, which were submitted to ruminal incubation for 264 hours. The contents of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: F57; Internal markers; Nylon; Non-woven textile; Particle size.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982011000300027
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Influence of suspended mussel lines on sediment erosion and resuspension in Lagune de la Grande Entrée, Îles-de-la-Madeleine, Québec, Canada ArchiMer
Walker, Tony R.; Grant, Jon; Weise, Andrea M.; Mckindsey, Christopher W.; Callier, Myriam D.; Richard, Marion.
Downward fluxes of organically rich biodeposits under suspended mussel lines can cause benthic impacts such as changes in benthic community structure or microbial mat production. Quantifying sediment erosion in these coastal ecosystems is important for understanding how fluxes of organic matter and mussel biodeposits contribute to benthic–pelagic coupling. Critical shear velocity (u*crit), erosion rates and particle size distributions of resuspended sediment were measured at four stations distributed along a transect perpendicular to a mussel farm in Lagune de la Grande Entrée, Îles-de-la-Madeleine (Quebec, Canada). Stations were selected underneath the outer-most mussel line (0 m) and at distances of 15, 30 m and at a reference station (500 m) further...
Tipo: Text Palavras-chave: Sediment erosion; Shear velocity; Resuspension; Biodeposits; Particle size; Mytilus edulis.
Ano: 2014 URL: http://archimer.ifremer.fr/doc/00202/31287/31925.pdf
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Influence of the grinding method on the flow properties of barley CIGR Journal
Hoffmann, Thomas.
Hammer mills or roller mills are used to grind grain for feed for animal husbandry. The grinding process in hammer mills is based on impact stress on the grain kernels. Roller mills, however, apply pressure and shear stress. The different working principles in hammer mills and roller mills lead to different physical properties of the ground material. The aim of the project was to quantify the physical properties of barley which was ground by a hammer mill or a roller mill. Therefore, the particle size distributions of the ground material were determined by sieving. The particle form was characterized by a form factor. Shear experiments according to Jenike were carried out to determine the flowability. The bulk density was obtained from the quotient of the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Flow properties; Particle size; Hammer mill; Roller mill.
Ano: 2015 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3449
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