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| Registros recuperados: 46 | |
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| PEREIRA, J. C.; FREITAS, S. P. de; QUEIROZ, A. C. de; SILVAM J. F. C. da; LEÃO, M. I.; ARAUJO, G. G. L. de. |
| Este trabalho foi realizado para avaliar as características físicas da digesta ao longo do trato gastrintestinal e examinar a concepção de ?tamanho crítico? de partículas que escapam do retículo-rúmen (RR), em bezerros de rebanhos leiteiros, submetidos a dietas com diferentes níveis de concentrado. Trinta e dois bezerros machos não-castrados, metade holandeses PC e metade mestiços (Holandês x Zebu), foram abatidos com idade média seis meses e 190 kg PV, após jejum de 16 horas. As dietas, fornecidas à vontade, foram constituídas de feno de capim coast-cross e diferentes níveis de concentrado(milho moído, farelode soja e sal mineral): 45,0; 60,0; 75,0; e 90,0% de concentrado na ração. Os conteúdos do RR, omaso (OM), abomaso (ABO), intestino delgado (ID) e... |
| Tipo: Artigo de periódico |
Palavras-chave: Nível de concentrado; Tamanho de partícula; Trato gastrintestinal; Produção Animal; Bezerro; Particle size; Gastrointestinal transit; Dairy sheep; Diet. |
| Ano: 1999 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1149201 |
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| SPERA, S. T.; BALDONI, A. B.; MAGALHÃES, C. A. de S.; LULU, J.; TONINI, H.; ZOLIN, C. A.; BEHLING, M.. |
| EN-US: The edaphoclimatic environment typical of sites hosting Brazil nut in Northern Mato Grosso State was investigated in the current study. Average climate elements at monthly scale (accumulated rainfall, mean, maximum and minimum air temperatures, mean relative air humidity, and water balance) and edaphic variables (soil profile description, as chemical, particle-size and mineralogical analyses) were herein assessed. The study was conducted in four sites hosting Brazil nut trees in Itaúba, Alta Floresta, Juína and Cotriguaçu counties. Results indicated that the climate in the host region is characterized by mean accumulated rainfall 1,700 mm year-1 and maximum water deficit 390mm. The host sites present acidic soils, whose texture vary from sandy to... |
| Tipo: Artigo de periódico |
Palavras-chave: Mato Grosso; Itauba-MT; Alta Floresta-MT; Cotriguaçu-MT; Juína-MT; Bertholletia Excelsa; Análise Química; Castanha; Castanha do Para; Chemical analysis; Particle size. |
| Ano: 2020 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1124936 |
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| 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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| 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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| 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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| 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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| 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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| 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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| 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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| 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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| 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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| 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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| 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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| Registros recuperados: 46 | |
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