Safety, health and ergonomics of workers in poultry houses systems equipped with different feed supply [Segurança, saúde e ergonomia de trabalhadores em galpões de frangos de corte equipados com diferentes sistemas de abastecimento de ração]
Carvalho C.D.C.S.,UNIMONTES |
Souza C.D.F.,Federal University of Viçosa |
Tinoco I.D.F.F.,Federal University of Viçosa |
Vieira M.D.F.A.,Federal University of Viçosa |
Minette L.J.,Federal University of Viçosa
Engenharia Agricola | Year: 2011
The feed supply in poultry houses can be done manually or automatically, to require effort is believed that manual supply could expose the attendant to physical overload. Thus, the objective of this study was to evaluate the ergonomic factors, and effect on posture and biomechanics of workers in poultry houses equipped with manual or automatic feeder. The analyzed factors were: physical work load, thermal environment, noise, lighting, postural analysis and biomechanics. It was found that in the sheds where the food supply system was manual, workers were exposed to greater physical effort. Based on the thermal environment management it was considered heavy for the two supply systems. The postures used in most activities deserve immediate corrective action. The handling in sheds equipped with manual feeder exposes workers to risk of injury in the shoulder, elbow, back, hip, knee and ankle. Thus, it can be concluded that management in poultry facilities equipped with manual feeder can be considered detrimental to the attendant exposing him to health risks and body damage.
Behavior of environmental variables on minimum ventilation systems for the production of broiler chickens [Comportamento de variáveis climáticas em sistemas de ventilação mínima para produção de pintos de corte]
Menegali I.,Federal University of Minas Gerais |
Tinoco I.F.F.,Federal University of Viçosa |
Carvalho C.C.S.,UNIMONTES |
Souza C.F.,Federal University of Viçosa |
Martins J.H.,Federal University of Viçosa
Revista Brasileira de Engenharia Agricola e Ambiental | Year: 2012
During the creation process of poultry, the initial or heating phase, is characterized as the most delicate period due to physiological immaturity of the birds. Thus, environmental factors stand out to infer, directly, in the growth, on the performance and maintenance of life of these animals. Based on these considerations, the aim of this study was to study the effect of three different systems of minimum ventilation (positive pressure, negative and natural) on environmental variables (air temperature, relative humidity and wind velocity) of broiler sheds during the heating phase. According to results obtained, it was verified that the heating system used was inadequate to maintain the air temperature and relative humidity within the standards deemed appropriate, thus exposing the birds to periods of heat stress by cold. In contrast, there were negative influences regarding ventilation rates applied to the two ventilation systems positive and negative. Wind velocity also remained at levels considered non-stressful for young chickens.
Martelli D.R.B.,State University of Montes Claros |
Rodrigues L.A.M.,Unimontes |
de Aquino S.N.,University of Campinas
Brazilian Journal of Otorhinolaryngology | Year: 2012
Cleft lip and/or palate represent the most common congenital anomalies of the face. Aim: Describe the relation between non sindromic cleft lip and/or palate and sex and severity of the clef in Brazilian population. Methods: Conducted cross-sectional study, between the years 2009 and 2011, with a population of 366 patients. Data were analyzed with descriptive statistics and using the multinomial logistic regression with an interval of 95% estimated the chances of the types of cleft lip and/or palate between sex. Results: Among the 366 cases of non sindromic cleft lip and/or palate, the more frequent clefts were cleft lip and palate, followed respectively by cleft lip and cleft palate. It is noted that cleft palate were more frequent in females, while the cleft lip and palate and cleft labial predominated in males. The risk of occurrence of cleft lip in relation the cleft palate was 2.19 times in males compared to females. While the risk of cleft lip and palate in relation cleft palate was 2.78 times in males compared to females. Conclusion: This study showed that there were differences in the distribution of the non sindromic cleft lip and/or palate between male and female.
Water uptake and pre-germination treatments in macaw palm (Acrocomia aculeata - Arecaceae) seeds [Absorção de água e tratamentos pré-germinativos em sementes de macaúba (Acrocomia aculeata - Arecaceae)]
Rodrigues Junior A.G.,Federal University of Lavras |
Oliveira T.G.S.,Federal University of Lavras |
de Souza P.P.,Federal University of Viçosa |
Journal of Seed Science | Year: 2013
The aims of this study were to evaluate the influence of embryo adjacent tissues in water uptake and treatments to release dormancy in macaw palm seeds. To assess water absorption with or without the opercular tegument (OT), seeds were immersed in water for 0, 12, 24, 48, 72, 96, 120, 168, 240, 360, 480 and 720 hours and the water content of isolated embryos and seeds was determined. In seeds with or without OT, gibberellic acid (GA3) solutions at concentrations of 0, 50, 100, 500, 1000 and 2000 mg.L-1 were applied on the OT region using a culture medium. In another experiment, the OT was removed or left intact and the seeds immersed in hydrogen cyanamide solutions (0, 0.5, 1, 1.5, 2 and 2.5%). The percentage germination, germination speed index (GSI) and percentage dead seeds were determined. The OT does not prevent embryo water uptake but reduces water absorption speed. The use of GA3 in a culture medium applied to the OT region did not effectively release dormancy. The use of cyanamide at these concentrations increased seed mortality, resulting in a low germination. OT removal increased the GSI.
Depressive symptoms and associated factors among elders dwelling in a community in the North of Minas Gerais, state Brazil [Sintomas depressivos e fatores associados entre idosos residentes em uma comunidade no norte de Minas Gerais, Brasil]
Hoffmann E.J.,State University of Montes Claros |
Farnese J.M.,Faculdades Unidas do Norte de Minas Funorte |
Jornal Brasileiro de Psiquiatria | Year: 2010
Objective: To verify the prevalence of depressive symptoms of an elder population dwelling in a community in Montes Claros, Minas Gerais, Brazil, and evaluate the association of them with biopsychosocial aspects and functional capacity. Methods: Transversal, observational, and population-based study. All of the elders living in the coverage area of a Family Health Team, and the interviews were made in their dwellings. An adaptation of the Brazil Old Age Schedule (BOAS) questionnaire was used to collect the biopsychosocial data. The abbreviated Geriatric Depression Scale (GDS-15) was used to evaluate depressive symptoms. The Katz index was used to evaluate the basic activities of daily living (BADL); the Pfeffer index to evaluate instrumental activities of daily living (IADL). The associations were verified by submitting data to bivariate and multivariate analysis. Results: The prevalence of depressive symptoms was of 20.9%. Depressive symptoms were significative associated with difficulty to sleep (PR = 2.04; p = 0.002) and dependence for IADL (PR = 3.22; p < 0.001). Conclusion: There is a high prevalence of depressive symptoms among elders in the community, being more frequent among elders with difficulty to sleep and functional dependence for IADL.
Nodulor capability and agronomic characteristics of common bean plants subjected to fragmented molybdenum and nitrogen fertilization [Capacidade nodulatória e características agronômicas de feijoeiros comuns submetidos à adubação molíbdica parcelada e nitrogenada]
De Albuquerque H.C.,Federal University of Minas Gerais |
Pegoraro R.F.,UNIMONTES |
Vieira N.M.B.,Instituto Federal Of Educacao |
De Jesus Ferreira Amorim I.,Graduando do curso de Agronomia UNIMONTES |
Revista Ciencia Agronomica | Year: 2012
The aim of this study was to evaluate the nodular ability and agronomic characteristics of three cultivars of common bean plants subjected to fragmented fertilization with molybdenum and nitrogen. The experimental design was of randomized blocks in a 3 x 7 factorial scheme, corresponding to the three cultivars (Carioca precoce, Rosinha and Ouro negro), and seven molybdic fertilization schemes, with three replications. The Ouro Negro cultivar showed a higher number of nodules and shoot dry-matter compared to Carioca precoce and Rosinha, and the Carioca and Ouro Negro cultivars achieved the highest number of grains per pod, hundred-grain weight and yield, than the Rosinha cultivar after fertilization with molybdenum and nitrogen. Nitrogen fertilization reduced the formation of nodules in the Carioca precoce and Rosinha cultivars, but increased most agronomic characteristics and yield in comparison to molybdic fertilization. However, the fragmented application of molybdenum between 15 and 30 days after emergence (DAE), positively influenced the formation of nodules, leaf-nitrogen levels, the number of grains per pod, hundred-grain weight and yield, compared to molybdenum application by seed, or the absence of fertilization, for the three cultivars studied, indicating that molybdic foliar fertilization is considered essential for increasing the productivity of bean cultivars.
D'Angelo M.F.S.V.,UNIMONTES |
Palhares R.M.,Federal University of Minas Gerais |
Takahashi R.H.C.,Federal University of Minas Gerais |
Loschi R.H.,Federal University of Minas Gerais
IET Control Theory and Applications | Year: 2011
This study presents a novel approach for incipient fault detection in dynamical systems which is based on a two-step fuzzy/Bayesian formulation for change point detection in time series. The first step consists of a fuzzy-based clusterisation to transform the initial data, with arbitrary distribution, into a new one that can be approximated with a beta distribution. The second step consists in using the Metropolis-Hastings algorithm to the change point detection in the transformed time series. The incipient fault is detected as long as it characterises a change point in such transformed time series. The problem of incipient fault detection in the RTN DAMADICS is analysed. © 2011 The Institution of Engineering and Technology.
Magalhaes H.M.,Federal University of Minas Gerais |
Lopes P.S.N.,Federal University of Minas Gerais |
Ribeiro L.M.,Unimontes |
Sant'Anna-Santos B.F.,Federal University of Minas Gerais |
Oliveira D.M.T.,Federal University of Minas Gerais
Trees - Structure and Function | Year: 2013
Butia capitata, an endemic palm of the Brazilian savanna threatened by deforestation, demonstrates low germinability due to seed dormancy. The present study characterizes the structure of the zygotic embryo and describes germination and seedling development. Pyrenes were sown into sandy soil substrates to germinate, and their embryos were also cultivated in vitro in MS medium; structural evaluations were made during their development. Seedling growth through the endocarp germ pore culminates in the protrusion of the cotyledonary petiole, with the root and leaf sheaths subsequently being emitted laterally from its extremity. The embryos are composed of the cotyledon (whose proximal third has a haustorial function) and a diminutive embryo axis that is contained within the cotyledonary petiole. The protoderm, ground meristem, and procambium can be observed in their typical positions in the embryo axis and cotyledon. The development of the vegetative axis could be observed on the second day of in vitro cultivation, with elongation of the embryo axis and the beginning of the differentiation of the first eophyll. Elongation of the cotyledonary petiole and the differentiation of the parenchyma and tracheary elements were observed during the second to fifth day. Although the hypocotyl-radicle axis is less differentiated than the plumule, root protrusion occurs on the eighth day, and the leaf sheaths are only emitted between the twelfth and the sixteenth days; the haustorium atrophied during this stage. The embryonic structure of B. capitata does not impose limitations on seed germination as dormancy is of the non-profound physiological type, and the 50 % elongation of the cotyledonary petiole serves as a morphological indicator of germination. © 2012 Springer-Verlag Berlin Heidelberg.
Vieira A.W.,Unimontes |
Lewiner T.,Pontifical Catholic University of Rio de Janeiro |
Schwartz W.R.,Federal University of Minas Gerais |
Campos M.,Pontifical Catholic University of Rio de Janeiro
Proceedings - International Conference on Pattern Recognition | Year: 2012
This work introduces a new representation for Motion Capture data (MoCap) that is invariant under rigid transformation and robust for classification and annotation of MoCap data. This representation relies on distance matrices that fully characterize the class of identical postures up to the body position or orientation. This high dimensional feature descriptor is tailored using PCA and incorporated into an action graph based classification scheme. Classification experiments on publicly available data show the accuracy and robustness of the proposed MoCap representation. © 2012 ICPR Org Committee.
Predicting the production of 'Vitória' pineapple from phytotechnical and nutritional characteristics [Predição de produção do abacaxizeiro 'Vitória' por meio de características fitotécnicas e nutricionais]
Vilela G.B.,Av. Dr |
Pegoraro R.F.,UNIMONTES |
Revista Ciencia Agronomica | Year: 2015
Obtaining an adequate correlation between such phytotechnical characteristics as the weight of the D leaf or the stem diameter and production in the pineapple can accurately predict the appropriate period for flower induction, and result in maximum productivity. Such information is still considered as scarce for the Victória cultivar. The aim of this study therefore was to correlate and relate phytotechnical and nutritional characteristics to production, in irrigated Victória pineapple in the north of the state of Minas Gerais, Brazil. To do this, 75 plants were randomly collected during the period of flower induction from a crop under central-pivot irrigation. After collection, the plants were separated into their various parts: D leaves, total leaves, stem, fruit and roots, in order to estimate the weight of fresh and dry matter. In addition, the stem diameter, the length of the D leaf, the macro and micronutrient content of the D leaf, and the harvest index were all estimated. Using variance analysis, a significant correlation was seen between the majority of characteristics with fruit production, especially the high positive correlation between the fresh and dry weight of the D leaf (fresh r = 0.82, dry r = 0.84), diameter of the stem (r = 0.82) and diameter of the fruit (r = 0.93) to fruit weight. In order to obtain a fruit weight greater than or equal to 1.2 kg plant-1, flower induction in the 'Vitória' pineapple was suggested for those plants having a minimum weight for D leaf fresh matter of 70 g, or with a minimum stem diameter of 8.5 cm.