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Search Results: 1 - 10 of 552338 matches for " A.F.;Neves "
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Pré-tratamento com somatotropina bovina (rbST) na superovula??o de doadoras da ra?a Holandesa
Neves, E.F.;Ramos, A.F.;Marques Júnior, A.P.;
Arquivo Brasileiro de Medicina Veterinária e Zootecnia , 2005, DOI: 10.1590/S0102-09352005000200011
Abstract: the use of recombinant bovine somatotropin (rbst) in superovulated holstein donors to increase the number and quality of the embryos was studied. forty cows were randomly allotted into three groups: control (n=15), treated with 250mg rbst (n=11) and treated with 500mg rbst (n=14) on the 6th day of the oestrous cycle. on the 10th day after estrus the donors were submitted to a superovulatory treatment with 360mg of fsh in decreasing doses, twice-a-day, with 12 hours interval. along with the 7th application of fsh, 0.5mg of cloprostenol was injected and the donors were inseminated 12, 20 and 28 hours after the onset of estrus. embryos were collected non-surgically on the 7th day after the 1st insemination. the use of 250 or 500mg of rbst increased (p<0.05) the percentage of viable embryos, but did not alter the recipient pregnancy rate.
Dopaminergic profile of new heterocyclic N-phenylpiperazine derivatives
Neves G.,Fenner R.,Heckler A.P.,Viana A.F.
Brazilian Journal of Medical and Biological Research , 2003,
Abstract: Dopamine constitutes about 80% of the content of central catecholamines and has a crucial role in the etiology of several neuropsychiatric disorders, including Parkinson's disease, depression and schizophrenia. Several dopaminergic drugs are used to treat these pathologies, but many problems are attributed to these therapies. Within this context, the search for new more efficient dopaminergic agents with less adverse effects represents a vast research field. The aim of the present study was to report the structural design of two N-phenylpiperazine derivatives, compound 4: 1-[1-(4-chlorophenyl)-1H-4-pyrazolylmethyl]-4-phenylhexahydropyrazine and compound 5: 1-[1-(4-chlorophenyl)-1H-1,2,3-triazol-4-ylmethyl]-4-phenylhexahydropyrazine, planned to be dopamine ligands, and their dopaminergic action profile. The two compounds were assayed (dose range of 15-40 mg/kg) in three experimental models: 1) blockade of amphetamine (30 mg/kg, ip)-induced stereotypy in rats; 2) the catalepsy test in mice, and 3) apomorphine (1 mg/kg, ip)-induced hypothermia in mice. Both derivatives induced cataleptic behavior (40 mg/kg, ip) and a hypothermic response (30 mg/kg, ip) which was not prevented by haloperidol (0.5 mg/kg, ip). Compound 5 (30 mg/kg, ip) also presented a synergistic hypothermic effect with apomorphine (1 mg/kg, ip). Only compound 4 (30 mg/kg, ip) significantly blocked the amphetamine-induced stereotypy in rats. The N-phenylpiperazine derivatives 4 and 5 seem to have a peculiar profile of action on dopaminergic functions. On the basis of the results of catalepsy and amphetamine-induced stereotypy, the compounds demonstrated an inhibitory effect on dopaminergic behaviors. However, their hypothermic effect is compatible with the stimulation of dopaminergic function which seems not to be mediated by D2/D3 receptors.
Synchrotron SAXS Studies of Nanostructured Materials and Colloidal Solutions: A Review
Craievich, A.F.;
Materials Research , 2002, DOI: 10.1590/S1516-14392002000100002
Abstract: structural characterisations using the saxs technique in a number of nanoheterogeneous materials and liquid solutions are reviewed. the studied systems are protein (lysozyme)/water solutions, colloidal zno particles/water sols, nanoporous nio-based xerogels, hybrid organic-inorganic siloxane-peg and ppg nanocomposites and pbte semiconductor nanocrystals embedded in a glass matrix. these investigations also focus on the transformations of time-varying structures and on structural changes related to variations in temperature and composition. the reviewed investigations aim at explaining the unusual and often interesting properties of nanostructured materials and solutions. most of the reported studies were carried out using the saxs beamline at the national synchrotron light laboratory (lnls), campinas, brazil.
The Case of Development Communication: Perspectives, Issues and Trends
Mathew,A.F.;
Palabra Clave , 2010,
Abstract: the purpose of this paper is to provide an overview of development communication. to do so, the first section focuses on the theoretical perspective and evolution of development communication. the second section deals with selected examples from the third world, and the final section is a summary
Que hipóteses estatísticas testamos através do SAS em presen?a de caselas vazias?
Iemma, A.F.;
Scientia Agricola , 1995, DOI: 10.1590/S0103-90161995000200002
Abstract: the interpretation of the tested hypothesis through variance analysis of balanced agricultural data, can be made, in general, without great difficulties, specially hi the case of well designed and well conducted experiments. if, however, data is not balanced and missing plots are present, the interpretation of the tested hypothesis through the sums of squares given by the available statistical packages, may be extremely difficult for statisticians, and practically impossible for profissionals of applied sciences, which use these packages. in this study, the interpretation of the most common tested hypothesis is discussed through the general linear models (glm) procedure of the statistical analysis system (sas), with the objective of alerting users about the problems related to the choice of the hypothesis that best reflects the objectives of his research.
New business dictionary/ nuwe sakewoordeboek.
A.F Prinsloo
Lexikos , 2004,
Abstract: J.D.U. Geldenhuys en E.E. Viljoen-Smook. New Business Dictionary/ Nuwe Sakewoordeboek. Fourth, revised and expanded edition/Vierde, hersiene en uitgebreide uitgawe. 2003, xxi + 315 pp. ISBN 1 86890 038 X. Cape Town/Kaapstad: Pharos Dictionaries/Pharos Woordeboeke. Prys: R140.
Sheep Fetal Thyroid Histological Development, with Adult Plasma T4 and T3 Hormones Concentrations
A.F. Alwan
Journal of Animal and Veterinary Advances , 2012,
Abstract: Thyroid hormones plasma concentrations values of 80 apparently healthy Iraqi sheep (40 ewes and 40 rams) were studied. The mean plasma T4 and T3 for ewes were 54.8±6.2 and 1.06±0.04 ng mL-1, respectively. The mean T4 and T3 were decreases as the age of rams progress, while in late pregnant ewes the mean T4 and T3 were significantly p<0.01 more than that of lactating and old ewes. The mean thyroid hormones value of both lactating and old ewes were, also significantly (p<0.01) different. The fetal thyroid gland weight were increased from 18-972.6 mg as fetal CRL increased from 5-45 cm. Histologically thyroid follicles containing colloid were seen at 20 cm CRL and follicles increased in number, size and colloid content as fetal CRL increased toward birth. The effect of age and sex of sheep produce different degree of variation in the thyroid hormones concentrations. The high levels of T4 and T3 in late pregnancy is essential for fetal growth and development. Fetal thyroid is functioning during gestation.
Frans van Niekerk, Joey Basson en Kobus Grobler (Samestellers). Wilde Woordeboek.
A.F. Prinsloo
Lexikos , 2012, DOI: 10.5788/9-1-932
Abstract: Review of Frans van Niekerk, Joey Basson en Kobus Grobler (Samestellers). Wilde Woordeboek. Resensie van Frans van Niekerk, Joey Basson en Kobus Grobler (Samestellers). Wilde Woordeboek.
J.D.U. Geldenhuys en E.E. Viljoen-Smook. New Business Dictionary/ Nuwe Sakewoordeboek
A.F. Prinsloo
Lexikos , 2011, DOI: 10.5788/14--703
Abstract: Die New Business Dictionary / Nuwe Sakewoordeboek van Geldenhuys en Viljoen- Smook (hierna G en VS) kan tereg bestempel word nie net as 'n nuwe sakewoordeboek nie, maar ook as 'n nuwesakewoordeboek. Om dit te verklaar, moet die sakeagtergrond in ag geneem word waarteen hierdie nuutste aanvulling tot die Afrikaanse vakwoordeboekkorpus saamgestel is.
The Case of Development Communication: Perspectives, Issues and Trends
A.F. Mathew
Palabra Clave , 2010,
Abstract: El propósito de este trabajo es proporcionar una visión general de comunicación para el desarrollo. Para este fin, la primera sección se centra en la perspectiva teórica y evolución de la comunicación para el desarrollo. La segunda sección trata de ejemplos seleccionados del Tercer Mundo, y la sección final es un resumen
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