3,339 research outputs found
Supersymmetric Sum Rules for Electromagnetic Multipoles
We derive model independent, non-perturbative supersymmetric sum rules for
the magnetic and electric multipole moments of any theory with N=1
supersymmetry. We find that in any irreducible N=1 supermultiplet the diagonal
matrix elements of the l-multipole moments are completely fixed in terms of
their off-diagonal matrix elements and the diagonal (l-1)-multipole moments.Comment: 10 pages, plain Te
Defeitos congênitos do palato em cães. Relato de três casos
O artigo não apresenta resumo
Heating Bridge Decks by Electrical Resistance
The 9th-Street interchange was designed and constructed with an automated electrical heating system for snow and ice removal. This report describes the heating system, its construction, and initial operation. The heating system was capable of keeping the interchange free of ice and snow accumulation. The average daily slab temperature fell below 0°C (32°F) on only one occasion. The average cost of electrical power for heating the interchange was $1,075 per day
Cracking in Concrete Pavement
Cracking of portland cement concrete pavements is a common, even expected, occurrence. To minimize potentially detrimental effects, it is necessary to understand mechanisms that might be used to explain such behavior so that measures may be developed and implemented to control the occurrence of such cracking. Several theories are discussed that might provide the mechanisms of pavement cracking. An alternate meachanism, based on fatigue loading of the concrete by temperature expansions-contrations, for the development of so-called D-cracking is offered
Cracking in Continuously Reinforced Concrete Pavements
The objective of this study was to monitor placement and evaluate performance of continuously reinforced concrete pavement with an emphasis on determining the time of cracking and crack interval. This paper reports on the design and construction practice for CRCP in Kentucky. Data on crack frequency and time of cracking is also included in an attempt to further explain the cracking pattern associated with CRCP
Unilateral ganglionectomy technique on the sheep's cranial cervical ganglion as a support for morphofunctional and quantitative studies
The article has no abstract
INTERFERÊNCIA DA NUTRIÇÃO NA RESISTÊNCIA MECÂNICA DO CÓLON E COMPARAÇÃO ENTRE DUAS TÉCNICAS DE SUTURA PARA A SÍNTESE DE COLOTOMIA EM RATOS
Trinta ratos, linhagem Wistar, fêmeas, com peso inicial médio de 150 gramas,
foram divididos em seis grupos de cinco animais, sendo o grupo I - dieta controle (ração
comercial), grupo II - dieta controle + colotomia e síntese com sutura contínua simples;
grupo III - dieta controle + colotomia e síntese com sutura tipo Cushing, grupo IV - dieta não
balanceada, grupo V - dieta não balanceada + colotomia e síntese com sutura contínua
simples, grupo VI - dieta não balanceada + colotomia e síntese com sutura tipo Cushing. A
colotomia foi executada no cólon descendente e no quinto dia do pós-operatório os animais
foram sacrificados para estudo da tensão de ruptura, pelo método de explosão, nos cólons
transverso e descendente. A média do ganho de peso com a dieta não balanceada foi
aproximadamente a metade da controle. Não houve diferença estatística entre os tipos de
sutura, nem entre o estado nutricional e técnicas de sutura. Em geral, os valores da tensão
de ruptura no cólon transverso intacto e no cólon descendente dos animais operados (dieta
controle e não balanceada), foram inferiores ao dos não operados com dieta controle. O
epíplon dos ratos dos grupos V e VI apresentou-se menos volumoso e adelgaçado, o que
promoveu aderências graves de outros órgãos sobre a região da colotomia. Essas adesões
podem ter interferido na avaliação da tensão de ruptura do cólon descendente. Foi possível
concluir que o método de força de explosão não permitiu estabelecer diferenças entre os
padrões de sutura utilizados e o grau de nutrição.
Nutrition interference on mechanic resistance of colon and comparison of two suture
techniques for colotomy closure in rats
Abstract
Thirty female Wistar rats with initial average weight of 150 g, were divided in
six experimental groups as follows: group 1 - control diet (commercial rat food); group II -
control diet and colostomy with simple continuous suture; group III - control diet and
colostomy with Cushings pattern suture; group IV - unbalanced diet; group V - unbalanced
diet and colostomy with simple continuous suture; group VI - unbalanced diet and colostomy
with Cushings pattern suture. Colostomy was carried out in descending colon. At the fifth
day after surgery, the animals underwent euthanasia in order to measure the bursting
strength of the transverse and descending colon. The gain of weight in the unbalanced diet
was almost half of the control diet. here were no statistic differences between the sutures
patterns, neither in regard to the nutritional conditions and suture techniques. Generally,
the bursting strength values measured in both colons of the animals under either control
and unbalanced diets, that underwent surgery, were lower than the ones found for rats
under control diet that did not underwent surgery. The omentum of the rats from groups V
and VI was less voluminous and thin causing serious adhesions to other organs at the
colostomy area. These adherences might have interfered in the evaluation of the bursting
strength in the descending colon. According to the results found, it was possible to conclude
that evaluation of the bursting strength did not allow to establish differences between the
suture patterns and the nutritional conditions of the experimental animals
DISTÚRBIOS FÍSICOS E COMPORTAMENTAIS EM CÃES E GATOS IDOSOS
A senescência é um processo que se estende do nascimento até a morte e refere-se às disfunções que ocorrem com o avançar da idade. O trabalho teve por objetivo realizar um levantamento dasprincipais alterações físicas e comportamentais, bem como o estabelecimento de correlação entre peso corpóreo e o tipo de alimentação, em 63 cães e 27 gatos,com idade acima de oito anos. Os resultados permitiram concluir que o distúrbio físico de maiorocorrência foi a obesidade. Dentre as mudanças comportamentais, a ansiedade e a agressividade foram as mais prevalentes. A combinação de comida caseira com ração comercial constituiu na principal fonte de alimentação oferecida pelos proprietários, sendo a mais consumida pelos animais obesos.Senescence is a process that extends from birth until death, and refers to the dysfunction that occurs with aging. The aim of this study is to make a survey of the main physical and behavioral changes, aswell as to establish the correlation between the body weight and type of food in 63 dogs and 27 cats over 8 years old. It was possible to conclude that the obesity was the most frequent physical disturbance. Among the behavioral changes, anxiety and aggressiveness werethe most prevalent. The commercial pet food combined to home made diet was the principal type of food provided by the owners, and this food was the most ingested by the obese animals
Não-união tarsometarsiana em Urubu-Rei (Sarcoramphus papa)
O artigo não apresenta resumo
Research of new refrigerants : prediction of the position of azeotropes for binary mixtures
Paper presented to the 3rd Southern African Solar Energy Conference, South Africa, 11-13 May, 2015.The aim of this paper is to predict the location of azeotropes for binary mixtures using two methods: firstly from the experimental data and secondly with a thermodynamic model. The model is composed of the Peng–Robinson equation of state, the Mathias–Copeman alpha function and the Wong–Sandler mixing rules involving the NRTL model. The binary systems of refrigerants considered in this paper are: Pentafluoroethane (R125) + Propane (R290) [1], 1,1,1-Trifluoroéthane (R143a) + Propane (R290) [2] and Carbon Dioxide (R744) + Propane (R290) [3]. The mixtures mentioned above have been chosen because they are environment friendly with a null ODP and a low GWP.
The results proved that there is a good agreement between the predicted values and the experimental data. The presented methods are able of predicting the azeotropic positions.cf201
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