|
|
|
| Registros recuperados: 10.963 | |
|
|
| Passoni,Sabrina; Borges,Fernando da Silva; Pires,Luiz Fernando; Saab,Sérgio da Costa; Cooper,Miguel. |
| In the soil science, a direct method that allows the study of soil pore distribution is the bi-dimensional (2D) digital image analysis. Such technique provides quantitative results of soil pore shape, number and size. The use of specific softwares for the treatment and processing of images allows a fast and efficient method to quantify the soil porous system. However, due to the high cost of commercial softwares, public ones can be an interesting alternative for soil structure analysis. The objective of this work was to evaluate the quality of data provided by the Image J software (public domain) used to characterize the voids of two soils, characterized as Geric Ferralsol and Rhodic Ferralsol, from the southeast region of Brazil. The pore distribution... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Soil structure; Image analysis; Thin section; Soil porous system; Soil pore size distribution; Ferralsols. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542014000200003 |
| |
|
|
| Souza,Rodrigo de; Alcalde,Claudete Regina; Hygino,Bruna; Molina,Bruna Susan de Labio; Santos,Geraldo Tadeu dos; Gomes,Ludmila Couto. |
| Peripartum is a critical period for dairy goats, as dry matter intake (DMI) is not enough to supply the energy requirement for foetal growth and subsequent lactation. The objective of this study was to evaluate the use of calcium salts of fatty acids (CSFA) to increase dietary energy level of peripartum dairy goats and its effects on nutritive value of diets and milk quality. Twenty multiparous Saanen goats (body weight 63.5±10.3 kg) were distributed in a completely randomised design in four treatments at the following dietary energy levels: 2.6 Mcal of metabolisable energy per kg of dry matter (Mcal ME/kg DM) - control diet; and 2.7, 2.8, and 2.9 Mcal/kg DM - with added CSFA. Goats were housed in individual stalls and evaluated in the peripartum period,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Digestibility; Calcium soap; Fatty acid; Lactoplus®; Protected fat. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542014000300009 |
| |
|
|
| Guimarães,Bárbara Maria Ribeiro; Mendes,Lourival Marin; Tonoli,Gustavo Henrique Denzin; Bufalino,Lina; Mendes,Rafael Farinassi; Guimarães Junior,José Benedito. |
| Brazil is one of the major banana producers in the world, and consequently generates a great amount of residues from this crop, which could be utilized in particleboard production. The present work aimed to evaluate the effect of different chemical treatments of the particles of Musa sp. pseudostem, on their chemical and physical properties (basic density), and on the physical and mechanical properties of the particleboards produced with the same material. Five treatments were applied to the particles: 1) without treatment (control); 2) 2% acetic acid; 3) 0.5% NaOH; 4) acetone (1/1 in volume/volume); and 5) water. Panels with medium density were produced (0.70 g/cm³), bonded with 12% (in relation to the particle mass) of urea-formaldehyde adhesive. The... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Musa sp.; Lignocellulosic residues; Chemical treatments. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542014000100005 |
| |
|
| |
|
|
| Silva,Vinicius Pimentel; Almeida,Fernando Queiroz de; Pimentel,Róbson Ricardo Moreira; Godoi,Fernanda Nascimento de; Santos,Tiago Marques dos; Pires,Marcus Sandes. |
| This study was conducted to evaluate the kinetics, physicochemical characteristics and particle size of digesta in the right ventral colon (RVC) of horses fed coastcross hay ground to different degrees. Four horses fitted with cannulae in the RVC were used and were fed the following forms of hay: long, chopped, ground to 5 mm and ground to 3 mm. A Latin Square 4x4 study design was used. Each experimental period included 10 days for diet adaptation, four days for feces collection and one day for digesta collection. The kinetics of the particulate and solute phases of digesta were evaluated based on the mean retention time (MRT), passage rate (k) and transit time (TT) using two external markers: Cr-NDF and Co-EDTA. The TT of solid phase digesta was 3 hours... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Chromium; Digestion; Particle size; Passage rate. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542014000500010 |
| |
|
|
| Navarro,Fernanda Keley Silva Pereira; Navarro,Rodrigo Diana; Murgas,Luis David Solis; Felizardo,Viviane de Oliveira. |
| Some studies and scientific investments have been done in aquaculture aiming to minimize the stress of the fish due to different factors, as management, nutritional status, water quality, temperature, photoperiod, and salinity. This study aimed to verify the effect of photoperiod on locomotor activity and plasma levels of cortisol and glucose in female Lambari. One hundred and twenty female Lambari adult were maintained in aquaria of 20 liters each in a completely randomized design with three treatments (T1 = 0Light: 24Dark, T2 = 12L: 12D, T3 = 24L: 0D) and four replications. The daily locomotor activity was registered during 15 days using an infrared photocell. After 40 days of experiment and previous fasting for 24 hours, fish were euthanized by a lethal... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fish; Synchronizer; Glucose; Cortisol; Swimming behaviour. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542014000200008 |
| |
|
|
| Martins,Adriana de Souza; Oliveira,Juliane Ribeiro de; Lederer,Marili Lopes; Moletta,José Luís; Galetto,Shivelly Los; Pedrosa,Victor Breno. |
| Due to the seasonal cycle of forage, the use of silage to feed animals provides nutrients throughout the year. However, its quality can be improved with the inclusion of additives and other products. Glycerol is a rich source of energy and present a high efficiency of utilization by animals. The purpose of this work was to evaluate the effect of glycerol inclusion on the chemical and fermentation characteristics of corn and sunflower silages. Two silage sources (maize and sunflower) were used and four levels of glycerol inclusion (0, 15, 30 and 45%) based on dry matter were carried out. The experimental design was completely randomized in a 2 x 4 factorial arrangement with five replications. The pH values and chemical composition of corn and sunflower... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Crude glycerin; Biofuels; Dry matter; Fermentation quality; Conserved forage. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542014000500009 |
| |
|
|
| Saath,Reni; Broetto,Fernando; Biaggioni,Marco Antônio Martin; Borém,Flávio Meira; Rosa,Sttela Dellyzete Veiga Franco da; Taveira,José Henrique da Silva. |
| Considering the worldwide consumption of coffee, it is natural that throughout the history many people have dedicated the research to markers that contribute somehow on gauging its quality. This research aimed to evaluate the biochemical performance of arabica coffee during storage. Coffee in beans (natural) and in parchment (pulped) dried in concrete terrace and in dryer with heated air were packed in jute bags and stored in not controlled environmental conditions. Enzymatic activities of superoxide dismutase, catalase, peroxidase, polyphenoloxidase, esterase and lipoxygenase in coffee grains were evaluated at zero, three, six, nine and twelve months by means of electrophoresis. Independently of the drying method, the activity of isoenzymatic complexes... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Coffea arabica L.; Post-harvest processes; Coffee quality. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542014000100002 |
| |
|
| |
|
|
| Lima,Pedro Luiz Terra; Silva,Marx Leandro Naves; Curi,Nilton; Quinton,John. |
| Adequate soil management can create favorable conditions to reduce erosion and water runoff, consequently increase water soil recharge. Among management systems intercropping is highly used, especially for medium and small farmers. It is a system where two or more crops with different architectures and vegetative cycles are explored simultaneously at the same location. This research investigated the effects of maize intercropped with jack bean on soil losses due to water erosion, estimate C factor of Universal Soil Losses Equation (USLE) and how it can be affected by soil coverage. The results obtained also contribute to database generation, important to model and estimate soil erosion. Total soil loss by erosion caused by natural rain, at Lavras, Minas... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cover plants; C factor; Soil sustainability. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542014000200004 |
| |
|
|
| Pagamunici,Lilian Maria; Souza,Aloisio Henrique Pereira; Gohara,Aline Kirie; Souza,Nilson Evelázio; Gomes,Sandra Terezinha Marques; Matsushita,Makoto. |
| Food bars are consumed heavily, especially because of their practicality; however they cannot be ingested by celiac patients and present low contents of essential nutrients. The goal of this study was the development and physical-chemical, nutritional and sensory evaluation of a gluten-free food bar containing amaranth and linseed. Gluten fractions were not detected in the food bar formulations. Crude protein and total lipid contents ranged from 68.32 to 76.60 and 74.56 to 82.06 g kg-1 of food, respectively. The polyunsaturated/saturated and n-6:n-3 fatty acid ratios ranged from 0.45:1 to 0.55:1 and 1.44:1 to 2.50:1, respectively. Calcium, magnesium, copper, iron, manganese and zinc were the principal minerals. Application of multivariate analysis enabled... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Principal component analysis; Pseudo-cereals; Linseed; Fatty acids. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542014000300007 |
| |
|
| |
|
| |
|
|
| Duarte,Felipe Cimino; Cardoso,Maria das Graças; Magriotis,Zuy Maria; Santiago,Wilder Douglas; Mendonça,João Guilherme Pereira; Rodrigues,Leonardo Milani Avelar. |
| Increased production and cachaça consumption has stimulated research regarding its quality. It is known that copper can be harmful to human health when it is in concentrated form in the beverage and is ingested in large amounts. Thus, there is a great concern among researchers and producers about the use of adsorbent substances for the removal of excess copper. The kinetic parameters and the adsorption isotherms for copper on kaolinite were studied to evaluate the physical-chemical quality of the cachaça before and after adsorption. K01, K03 and K04 kaolinites presented a maximum adsorption capacity of 97, 95 and 90%, respectively. The kinetic rates followed the pseudo-first-order model, and the adsorption isotherm was best adjusted to the Freundlich... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Beverage; Kinetic parameters; Isotherms; Adsorption. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542014000400009 |
| |
|
|
| Perondi,Dani; Moreira,Ivan; Pozza,Paulo Cesar; Carvalho,Paulo Levi de Oliveira; Pasquetti,Tiago Junior; Huepa,Laura Marcela Diaz. |
| The passion fruit seed is a byproduct of the extraction of the passion fruit pulp and can be used for feeding to pigs. Two experiments were conducted (digestibility and performance) to evaluate the use of the passion fruit seed meal in feed for growing and finishing pigs. A digestibility trial was conducted with growing and finishing pigs, in which the passion fruit seed meal (PSM) replaced the reference diet (0% PSM) in levels of 4, 8, 12 and 16%. Thirty barrows were used with average weight of 36.85±4.19. The PSF showed DE and ME of 3.244 and 3.223 Mcal/kg, respectively. In the performance trial, were used 150 pigs, which 75 in the growing phase and 75 pigs in the finishing, with initial body weight of 30.63±1.49 and final of 60.38±4.75 kg and 60.40±1.50... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Co-product; Digestibility; Nutritional value; Carcass. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542014000400010 |
| |
|
|
| Spinello,Alessandra Mussato; Leonel,Magali; Mischan,Martha Maria; Carmo,Ezequiel Lopes do. |
| Short cooking time and ability to blend varieties of food ingredients have made extrusion cooking a medium for low-cost and nutritionally improved food products. The effect of moisture, extrusion temperature and amount of turmeric flour mixed with cassava flour on physical characteristic of puffed snacks was evaluated in this work. Extrusion process was carried out using a single-screw extruder in a factorial central composite design with four factors. Results showed effect of extrusion parameters on dependents variables. High expansion, low browning, low water solubility index, intermediate water absorption index and high crispness desirable characteristics to puffed snacks are obtained in conditions of 12% moisture, 5% turmeric flour, 105º C of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Curcuma longa; Manihot esculenta; Extrusion. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542014000100008 |
| |
|
| |
|
|
| Morais,Vinícius Augusto; Mello,José Márcio de; Gomide,Lucas Rezende; Scolforo,José Roberto Soares; Araújo,Emanuel José Gomes de; Rufini,Ana Luiza. |
| Different tree diameter measuring heights are displayed in the literature, which in some cases can lead to different results in the final estimates, if the model used is not compatible with the diameter measurement height. The aim of this study was to evaluate and validate equations of volume and biomass, adjusted by Goal Programming and regression by Ordinary Least Squares Method for the Cerrado Sensu Stricto and Campo Cerrado in Minas Gerais state, using information on diameters measured at 0. 10, 0.30 and 1.30 meters from the ground level. Thus, we rigorously scaled 868 trees in areas of Cerrado Sensu Stricto and Campo Cerrado of Minas Gerais. Two different models were subsequently adjusted, one being dual input with the diameter measured at different... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Regression models; Forest inventory Brazilian; Savannas. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542014000300002 |
| |
|
|
| Silva,Bruno Montoani; Silva,Sérgio Henrique Godinho; Oliveira,Geraldo Cesár de; Peters,Petrus Hubertus Caspar Rosa; Santos,Walbert Júnior Reis dos; Curi,Nilton. |
| Digital techniques and tools can assist not only in the prediction of soil properties, such as soil moisture, but also in planning the use and management of areas for agriculture and, or, environmental purposes. In this sense, this work aimed to study wetness indexes methods, defining the spatial resolution and selecting the estimation method that best correlates with water content data measured in the field, evaluating even moisture at different soil depths and seasons. This study was developed in a landscape with strongly undulated relief and covered with Nitosols at the summit and upper middle third, and Argisols at the low middle third, ranging in altitude from 845 to 890 m, located in the southern state of Minas Gerais, Brazil. It were performed... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Terrain attributes; Soil water content determination; Relief; Water dynamics. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542014000200005 |
| |
|
|
| Moreira,Andréa Nunes; Oliveira,José Vargas de; Oliveira,José Eudes de Morais; Souza,Geisa Mayana Miranda de; Breda,Mariana Oliveira. |
| Thrips of the genus Frankliniella cause significant reduction on grape production. Little is known about its decision making approach in integrated pest management and information on thrips injuries to the vine is scarce, hindering the control of this pest. This study aimed to determine the species of thrips and injuries that cause damage to berries in seedless grapes clusters. The trial was conducted in an area cultivated with Vitis vinifera L., variety Thompson Seedless, using a randomized block design with five treatments and four replications. The treatments consisted of artificial infestation (zero, two, four and eight thrips per inflorescence), and treatment determined by the monitoring system of the grower. Each replication consisted of three plants... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Vitis vinifera; Thrips; Integrated pest management; Infestation level; Damages. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542014000400002 |
| |
| Registros recuperados: 10.963 | |
|
|
|
