1,125 research outputs found

    An unusual case of accessory head of coracobrachialis muscle involving lateral cord of brachial plexus and its clinical significance

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    Knowledge of anatomical variations in the peripheral nervous system is key in the interpretation of unusual clinical signs or during physical or diagnostic imaging. This case study is a description of an anatomical variation between the coracobrachialis muscle and brachial plexus. In a routine dissection in the human anatomy laboratory, we were faced with an anatomical variation in the coracobrachialis muscle, observed in the upper right limb of a male cadaver. The coracobrachialis muscle had a common origin at the apex of the coracoid process and then divided into two heads. The lateral head followed its normal course until insertion into the middle third of the humerus, while the medial head involved the lateral cord of the brachial plexus before insertion into the intermuscular septum in the proximal third of the humerus. Atypical anatomical variations have clinical and surgical implications in procedures such as brachial plexus block and lateral cord compression. In these cases the result could be paralysis of the flexor musculature of the forearm and hypoesthesia of the forearm

    Optimized delta expansion for relativistic nuclear models

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    The optimized δ\delta-expansion is a nonperturbative approach for field theoretic models which combines the techniques of perturbation theory and the variational principle. This technique is discussed in the λϕ4\lambda \phi^4 model and then implemented in the Walecka model for the equation of state of nuclear matter. The results obtained with the δ\delta expansion are compared with those obtained with the traditional mean field, relativistic Hartree and Hartree-Fock approximations.Comment: 22 pages Latex, 3 ps figures, to appear in Z. Phys.

    Influence of organic fertilization and fertigation on quality of ?Syrah? tropical wine produced in the São Francisco Valley, Brazil.

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    The vitiviniculture in the São Francisco Valley is a recent activity, but with great social and economic importance to the region. The region is located in a tropical semi-arid zone and it is important the study of management practices for its unique soil and climate conditions. Therefore, this study aimed to evaluate the influence of the addition of organic matter and potassium fertigation on physic-chemical quality of Syrah (Vitis vinifera L.) tropical wines produced in the São Francisco Valley

    Avaliação do depósito de gotas obtido através da pulverização eletrostática e da convencional sobre cultura do algodoeiro.

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    Resumo: Dois ensaios de campo foram conduzidos nos municípios de Monteiro, PB, e Surubim, PE, Brasil, no ano agrícola de 1992, com o objetivo de se avaliar a pulverização eletrostática frente à convencional, na cultura do algodoeiro, em duas fases de desenvolvimento das plantas, aos 30 e 80 dias após a germinação, sob condições de sequeiro. O delineamento experimental foi o de blocos casualizados, com cinco repetições e esquema de análise fatorial (23 x 32 + 1) sendo 23 representando os fatores pulverização, pressão e faces da folha (superior e inferior); (32): posição e altura da planta (1): testemunha. A cultivar foi a CNPA precoce 1, plantada no espaçamento de 1m entre fileiras, com 50.000 pl/ha. Para a coleta das populações de gotas, utilizaram-se etiquetas hidrossensíveis e, para a sua caracterização, empregou-se um analisador de imagem, o Optomax V. A análise dos dados de gotas/cmM2 e a percentagem de área coberta demonstraram que na face superior das folhas do algodoeiro não houve diferença significativa entre as pulverizações estudadas, porém a pulverização eletrostática apresentou maior número de impactos na face inferior, possivelmente pela atração da gota carregada eletricamente pelo objeto de tratamento; entretanto, tal procedimento não permite uma difusão sistemática desta técnica para o cultivo do algodão, nas condições em que se realizaram os ensaios. Abstract: Two trials were carried out to evaluate the performance of electrostatic against conventional spraying on cotton canopy after 30 and 80 days of emergence. A factorial (23x32+1) arranged as a completely random design was used for the treated area. Cotton cultivar used was CNPA Precoce 1 which was planted in a configuration of 1m between lines with 5 plants/m within the line. The analysis of the data showed that in the superior surface of cotton leaf there was no significant differences among the treatments, however, the electrostatic spraying presented a higher number of impacts on the inferior surface probably because of the attraction of the electrical charged droplets by the treating object.Título em inglês: Evaluation of droplet deposition by electrostatic and conventional spraying on cotton canopy. Parte de trabalho de tese de Doutorado realizado na Universidad Politécnica de Madrid/Espanha

    Comportamento de cultivares de girassol consorciadas com milho na transição Agreste/Sertão.

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    Cultivares de girassol consorciadas com milho na transição Agreste / Sertão (Agreste/Sertão). O presente trabalho, verificou-se que, em média, o milho consorciado produziu cerca de 3 vezes mais que o girassol solteiro e quase 5 vezes mais que o girassol consorciado.bitstream/item/117848/1/Cot-144.pd

    Produtividade do girassol em função da disponibilidade de umidade.

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