EFEITO do ÁCIDO GIBERÉLICO SOBRE O COMPRIMENTO E DIÂMETRO do CAULE DE PLÂNTULAS DE LIMÃO `CRAVO' (Citrus limonia Osbeck)

O presente trabalho foi instalado em condições de campo com plântulas de limão `Cravo'(Citrus limonia Osbeck), em delineamento inteiramente casualizado, com três repetições no esquema de parcelas sub-divididas, onde os tratamentos principais foram 5 concentrações de ácido giberélico: T1 = 0, T2 = 25, T3 = 50, T4 = 100 e T5 = 150 ppm, parceladas em quatro pulverizações. Os tratamentos secundários foram as coletas do material, realizadas dos 70 aos 210 dias, em intervalos de 14 dias. Pelos resultados obtidos, o fitorregulador promoveu efeito favorável com relação ao incremento do comprimento do caule, sendo o tratamento de 150 ppm superior aos demais. O diâmetro do caule atingiu maiores dimensões com aplicação de ácido giberélico 50 e 25 ppm.

Desenvolvimento de Rhapis excelsa (Thunberg) Henry Ex. Rehder (Palmeira-Ráfia): Influência da altura do recipiente na formação de mudas

Rhapis excelsa, originária do sul da China, é uma das palmeiras ornamentais mais cultivadas no mundo, principalmente em vaso. Objetivou-se com esta pesquisa investigar a influência da altura do vaso no desenvolvimento da espécie. Para tanto, mudas de dois anos de idade, apresentando 10 cm de altura e sistema radicular com 10 cm de comprimento, foram transplantadas para recipientes de PVC com 10 cm de diâmetro e 20, 25, 30, 35 e 40 cm de altura, que se constituíram em tratamentos. O substrato utilizado foi uma mistura de casca de pinho, vermiculita e solo argiloso (2:1:1), adubado com 45 g de Osmocote (15:10:10). Os parâmetros avaliados foram: altura da planta, diâmetro do colo, número de folhas, número de perfilhos emitidos, avaliados aos 6, 12 e 18 meses após a instalação do experimento. Aos 18 meses foram tomados também o peso da matéria seca da parte aérea e o peso da matéria seca das raízes. O delineamento experimental foi inteiramente casualizado, com cinco repetições com duas plantas. Houve diferença significativa para a variável altura de plantas, aos 6 meses, sendo que o recipiente de 40 cm de altura apresentou o pior resultado. Não houve diferença significativa entre as variáveis analisadas aos 12 meses de investigação. Já aos 18 meses, houve diferenças significativas entre os tratamentos para as variáveis altura da planta e diâmetro do colo, sendo o recipiente de 40 cm inferior aos demais em relação à altura da planta e o de 25 cm superior quanto ao diâmetro do colo. A utilização do recipiente com 25 cm de altura revelou-se interessante pela qualidade das plantas formadas e em relação a aspectos econômicos da produção.

Influência do período de gestação e do tamanho da ninhada no crescimento ponderal intra-uterino de coelhos

Intrauterine growth of Norfolk rabbits was studied from the 20th day of gestation until the parturition (31st day). A theoretical equation was adjusted for fetuses body weight. The exponential model was tested by stepwise regression technique after linearization. Both stage of gestation (t) and number of fetuses (n) had significant effects on the growth rate. The following equation was proposed to describe the weight of the pups: W = exp. (-12,9772).n.exp. {(0,991263-0,014007.5-0,00039.n)t} (with R2 = 0,9932). The biological coherence and the interpretation of the coefficients permitted us to conclude that similar models could be used for other multiparous species. This model can also be used with or without the presence of different factors related to fetal growth.

Sensibilidade do colo dental. Uma nova alternativa terapêutica.

The cervical hypersensitivity tooth was analysed and treated by application of a varnish with high fluoride ions content (Duraphat) and of a glass ionomer cement usually indicated to cavity lining (XR-ionomer-Kerr). This technique was applied in sixty-seven teeth of Clinic Graduation patients (Faculdade de Odontologia de Araçatuba) and demonstrated a high index of satisfactory results. The clinical findings of this study relate that, this technique is more one method of choose by clinicians.

Comprimento da peça intermediária de espermatozóides bovinos e suas relações com características do sêmen e fertilidade

With the objective of identifying predictors of fertility in bulls, the correlation coefficients of the midpiece length of bovine spermatozoa with semen traits and fertility were estimated. Data were obtained from semen samples of 50 crossbred bulls submitted to a progeny test. The midpiece length was determined in 40 midpieces of each bull through a image analysis system (Videoplan). Besides the physical traits before and after semen freezing, the oxygen consumption rate and the cytochemical activity index were observed. The correlation coefficients were low and non-significant (P> 0.05), indicating that the midpiece length is not a good predictor of fertility.

Relação entre comprimento craniocaudal e diãmetro da vesícula embrionária/fetal com idade de gestação por meio de avaliação ultra-sonográfica em ovino da raça Bergamácia

This study aimed to relate embryonic/fetal vesicle diameter (EVD) and crown-rump length (CRL) to gestational age in ewes from the 15 th to the 45 th day of pregnancy. Nineteen adult Bergamácia ewes with synchronized estrus were mated by the same male. Ultrasonographic evaluations were performed every 24 hours from the 15 th to the 30 th day after mating and every five days from the 30 th to the 45 th day using 5.0 and 7.5MHZ linear transducers. Average daily growth of EVD and CRL were 1.40mm and 1.33mm, respectively. The inverse calibration obtained for EVD was: Days = -11 + 50(0.1 + 0.04log EVD) 1/2 with R 2 = 0.85, and for CRL was: Days = 13.63 + 12.5(- 0.71 + 0.16CRL) 1/2 with R 2 = 0.93. Both EVD and CRL obtained by ultrasonography are useful measurements that allow the prediction of gestational age in Bergamácia ewes.

Relação peso-comprimento e fator de condição para Cichla cf. ocellaris e Cichla monoculus (Perciformes, Cichlidae) no reservatório de Volta Grande, Rio Grande - MG/SP

The aim of this paper was to analyze the length-weight relationship and the condition factor of two species of cichlids (Cichla cf. ocellaris and Cichla monoculus) (Perciformes, Cichlidae) that were inducted in Volta Grande Reservoir, Rio Grande. There was no difference in the length-weight relationship between the sexes for Cichla cf. ocellaris and Cichla monoculus. The allometric condition factor showed a fall in the spring and another smaller one in the winter. It happens when these fishes change their feeding activity. In the spring all the reproductive behavior are developed and, in the winter, there is a shortage of prey. The variation of the relative condition factor followed the variation of the allometric condition factor due to the low contribution of the gonads weight and the small amount of accumulated fat in the total weight. The length distribution, length-weight relationship and condition factor of these fishes vary in accordance with the time of introduction into the reservoir, the characteristics of the ecosystem as well as the interactions among the species at these sites.

Mensuração do comprimento das fibras para a determinação da madeira juvenil em Eucalyptus citriodora

The juvenile wood has peculiar characteristics from the anatomical structure and physical-mechanical properties, considering these aspects the knowledge of the wood is essential for wood adequate utilization. The aim of this work was to determinate the zone of juvenile wood of pith-bark direction in Eucalyptus citriodora. The juvenile and mature wood zones were determined across fiber length measurement in various height in the tree stem. Results showed that juvenile wood zone occurs approximately up to the 45 at 55 mm from the pith.

Relação peso-comprimento e fator de condição de Brycon opalinus (Pisces, Characiformes) no Parque Estadual da Serra do Mar-Núcleo Santa Virgínia, Mata Atlântica, Estado de São Paulo, Brasil

In this study, the length-weight relationship and the condition factor of Brycon opalinus were analyzed in three rivers within the Santa Virgínia Unit, at Serra do Mar State Park, in São Paulo State. The different conditions in these three environments were evidenced, such as the seasonality, reproductive period, and the differences between females and males according to the parameters which evidenced the best physiological condition of the fish. In this species, the condition factor varied along the seasons at all three collection sites. The length of the first gonadal maturation and the reproductive period were long, with the highest intensity in the spring and summer.

Relação peso-comprimento e fator de condição de Salminus hilarii Valenciennes 1850 (Osteichthyes, Characidae) em um trecho da bacia do rio Sorocaba, Estado de São Paulo, Brasil

The length-weight relationship and condition factor of Salminus hilarii were analyzed in a section of the lower part of the Sorocaba river basin, São Paulo State. By studying male, female and immature individuals separately, different length-weight patterns were found for each. The same happened when distinct seasonal variations of the relationships were compared, related to feeding alterations and to the reproductive period of the species.

Relação peso-comprimento e fator de condição de Cichla kelberi (Perciformes, Cichlidae) introduzidos em um lago artificial no sudeste Brasileiro

The length-weight relationship and condition factor for Cichla kelberi introduced in an artificial lake in southeastern Brazil were analyzed. By studying separately the male, female and immature individuals, different length-weight patterns were found to happen among them. The same happened when distinct seasonal variations were compared. They are related to feeding alterations and me reproductive periods. The length-weight relationship and condition factor for these fishes vary in accordance with the time of introduction, population size, the characteristics of the ecosystem, sexual maturity, as well as the intra- and interspecific interactions.

Histomorfometria do corno uterino de gatas (Felis Catus) submetidas à ovariosalpingohisterectomia

Histomorphometric data were obtained from cats uterine horns: either nulliparous (n = 6), primiparous (n = 6), multiparous (n = 6) and treated with contraceptive (n = 6). The material was collected after surgery, fixed in paraformaldehyde and embedded in paraplast® resin to be sliced in a microtome. The obtained sections were stained with hematoxylin - eosin and measured under a light microscope: uterine wall total thickness (μm), endometrium total height, endometrial glands diameter and glandular epithelia height, total myometrium, internal and external myometrium and vascular layer thickness. It was concluded that: 1 - contraceptive use and number of pregnancies altered the uterine structure, 2 - one pregnancy does not appear to affect the uterine lining structures as occurs in multiparous cats, 3 - there was no variation on the evaluated structures between nulliparous and primiparous cats except for inner myometrium, 4 - the total myometrium hight and the endometrium hight showed similar variations except for the contraceptive treated cats group, 5 - the outer myometrium showed marked changes in the treated cats, 6 - the less marked morphological variations were for the endometrial glands diameter and glandular epithelium hight, 7 - the presence of dilated endometrial glands was found only in treated cats.

Efeito do comprimento e da polaridade do espaçador entre cadeias do peptídeo Hylina-C na forma dimérica

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Inter-relação do comprimento dos prolongamentos resinosos (tags) e da espessura da camada híbrida de adesão, com a resistência de união de sistemas adesivos ao tecido dentinário

Pós-graduação em Odontologia - FOA