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Search Results: 1 - 10 of 232159 matches for " Carlos Eduardo Ramos de; "
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Effects of Copaiba Oil on Cyclophosphamide-Induced Teratogenesis in Mice  [PDF]
Ana Carolina dos Santos Louren?o, José Eduardo Baroneza, Solange de Paula Ramos, Liliane Kelen Miguel, Luiz Carlos Juliani, Aline Pic-Taylor, Maria José Spar?a Salles
American Journal of Plant Sciences (AJPS) , 2014, DOI: 10.4236/ajps.2014.523362
Abstract:
Cyclophosphamide is an anti-neoplastic chemotherapy drug which, when administered to animals during the gestational period, provokes visceral, skeletal and external malformations. Copaiba oil obtained from Copaifera L. genus is traditionally used in popular medicine for its anti-inflammatory and antimicrobial activities. However, the effect of copaiba oil onteratogenesis remains unknown. This study aimed to investigate the possible protector effects of copaiba oil on the model of teratogenesis induced by cyclophosphamide in mice. Pregnant female Swiss mice were divided into 8 groups (n = 15). Three groups received copaiba oil, via gavage, in the following doses: 0.3 mL·Kg-1, 0.6 mL·Kg-1 and 0.9 mL·Kg-1 (b.w.), associated to phosphate-buffered saline (PBS), intraperitoneal (i.p.). The negative control group received medium chain triglyceride (MCT) and PBS. The positive control group received cyclophosphamide (30 mg·Kg-1 (b.w.)) and MCT. The three treatment groups called associated groups (A) received one of the doses of copaiba oil, via gavage and an associated dose of cyclophosphamide intraperitoneally. Copaiba oil presented a protective effect against teratogenesis induced by cyclophosphamide in the following skeletal structures: metacarpals, forepaws proximal phalanges, and tail vertebras. It also reduced the hydrocephalus frequency. These data suggest that copaiba oil could be a potential candidate for an anti-teratogenic agent.
Adequa??o de meios de cultura de anteras e testes de genótipos de trigo
Ramos, Luis Carlos da Silva;Yokoo, Erica Yumi;Camargo, Carlos Eduardo de Oliveira;
Bragantia , 1994, DOI: 10.1590/S0006-87051994000200004
Abstract: experiments were carried out to establish conditions and to access varietal effects for wheat androgenesis. the varieties pf 853031, a standard known for androgenic capacity, and the iac 24 of high agronomic value, were tested in two culture mediums, potato-2 and n6, including two auxins, iaa and 2.4-d, at 3, 9 and 27 ìmol/l, and kinetin, at 2, 6, 12 and 24 μmol/l. the experiment was installed in factorial design with six blocks and 20 anthers per plate (a block). about 5,760 anthers were plated per variety. the experiment was left in a photoperiodic room with (a) 14 h of cool fluorescent light, 60 ìmol.m-2.s-1 (3,200 lux), at temperature of 25°c, and (b) pretreated in dark at 6°c for four days, then backed to a. the variety iac 24 showed higher androgenic capacity than the pf 853031 variety, in medium potato-2, 2.4-d at 27 ìmol/l and kinetin from 2 to 6 μmol/l. cold treatment for four days was beneficial in improving androgenesis to both varieties. five other varieties were studied, pf 853048, as a androgenic control, iac 21, bh 1146, iac 60 and anahuac; two culture mediums, potato-2 and n6, along with two hormonal combinations, ch1 (iaa 10 μmol/l and kinetin 30 μmol/l) and ch2 (2.4-d 10μmol/l and kin 3 .mol/l) in the condition as (b) above. the standard variety pf 853048 ranked first and anahuac, the second in terms of androgenic response. however, plants were only obtained from pf 853048. it is likely that the androgenic effect is under genotype control in wheat. the hormonal combination 10 μmol/l of 2.4-d and 3 μmol/l of kinetin were observed to induce higher androgenic response. regenerated plants were potted and left to flower. all of them showed to be infertile, but produced seeds after colchicine treatment.
Efeito do fósforo sobre os componentes de produ??o, altura das plantas e rendimento de gr?os, em trigo
Oliveira, Otávio Franco de;Camargo, Carlos Eduardo de Oliveira;Ramos, Valdir Josué;
Bragantia , 1984, DOI: 10.1590/S0006-87051984000100004
Abstract: four experiments using the wheat cultivars: iac-5 and alondra-s-46 were carried out at itararé experimental station in an acid soil showing low levels of phosphorus during the years of 1979 and 1980. the treatments consisted of five levels of p2o5 per hectare namely 0, 60, 120, 180 and 240kg. grain yield increased with applied phosphorus for the two cultivars but iac-5 showed higher yield and higher phosphorus efficiency in comparison with alondra-s-46. grain yield, spike length, number of spikelets per spike, number of kernel per spike, number of kernel per spikelet, 100 kernel weight and plant height for the cultivar , iac-5 when levels of phosphorus were applied showed values significantly superior when compared with check. considering the cultivar alondra-s-46 the same conclusions were obtained for the following characteristics: head length, number of spikelets pet spike, 100 kernel weight and plant height. the cultivar iac-5 presented grain yield for the different levels of p2o5 applied in the soil highly associated with all yield components under study, with plant height and with the amounts of p2o5 applied in the soil. considering the cultivar alondra-s-46 grain yield was highly correlated with head length, number of spikelets per spike, number of kernel per spike, 100 kernel weight and plant height, correlated with number of heads per linear meter and p2o5 levels applied in the soil and no association between grain yield and number of grain per spikelets was observed. associations between levels p2o5 applied to the soil and phosphorus concentrations in the tops were highly significant for the two wheat cultivars under study.
Linhagens diaplóides de trigo: produ o de gr os, características agron micas e tolerancia à toxicidade de alumínio
CAMARGO CARLOS EDUARDO DE OLIVEIRA,RAMOS LUIS CARLOS DA SILVA,FERREIRA FILHO ANTONIO WILSON PENTEADO,FELICIO JO?O CARLOS
Bragantia , 1999,
Abstract: Compararam-se 18 linhagens de trigo diaplóides obtidas via cultura de anteras de plantas híbridas, em gera o F1, e os cultivares Al Res 102/84 e IAC-24, em quatro ensaios instalados em condi es de irriga o por aspers o e de sequeiro. Analisaram-se a produ o de gr os, outros componentes da produ o, características agron micas e resistência à ferrugem-da-folha. Estudou-se também a tolerancia ao alumínio em solu es nutritivas, em condi o de laboratório. A linhagem diaplóide 5, provinda do cruzamento IAS-63/ALDAN "S"//GLEN/3/IAC-24, de porte baixo, mostrou resistência ao acamamento e ao agente causal da ferrugem-da-folha e tolerancia à toxicidade de alumínio, destacando-se, ainda, quanto à produ o de gr os. A linhagem 6 identificou-se como fonte genética de maior número de gr os por espigueta, porte baixo, resistência ao acamamento e à ferrugem-da-folha, e a linhagem 8 apresentou espigas mais compridas e maior número de espiguetas por espiga. Todos os genótipos avaliados, com exce o do cultivar IAC-287 (controle sensível) exibiram elevada tolerancia à toxicidade de alumínio.
Phylogenetic correlograms and the evolution of body size in South American owls (Strigiformes)
Diniz-Filho, José Alexandre Felizola;Sant'Ana, Carlos Eduardo Ramos de;
Genetics and Molecular Biology , 2000, DOI: 10.1590/S1415-47572000000200008
Abstract: during the last few years, many models have been proposed to link microevolutionary processes to macroevolutionary patterns, defined by comparative data analysis. among these, brownian motion and ornstein-uhlenbeck (o-u) processes have been used to model, respectively, genetic drift or directional selection and stabilizing selection. these models produce different curves of pairwise variance between species against time since divergence, in such a way that different profiles appear in phylogenetic correlograms. we analyzed variation in body length among 19 species of south american owls, by means of phylogenetic correlograms constructed using moran's i coefficient in four distance classes. phylogeny among species was based on dna hybridization. the observed correlogram was then compared with 500 correlograms obtained by simulations of brownian motion and o-u over the same phylogeny, using discriminant analysis. the observed correlogram indicates a phylogenetic gradient up to 45 mya, when coefficients tend to stabilize, and it is similar to the correlograms produced by the o-u process. this is expected when we consider that body size of organisms is correlated with many ecological and life-history traits and subjected to many constraints that can be modeled by the o-u process, which has been used to describe evolution under stabilizing selection.
Potencial de genótipos de trigo duro para produtividade e caracteres agron?micos no Estado de S?o Paulo
Silva, Allan Henrique da;Camargo, Carlos Eduardo de Oliveira;Ramos Júnior, Edison Ulisses;
Bragantia , 2010, DOI: 10.1590/S0006-87052010000300004
Abstract: semolina extracted from grains of durum wheat is used for manufacturing pastas. therefore, it is of interest to evaluate the yield potential and agronomic behavior of seventeen durum wheat inbred lines (bh-1146/lgn//2*iac-1003) originated from instituto agron?mico (iac) breeding program and three check cultivars iac-1001, iac-1002 and iac-1003, introduced from international maize and wheat improvement center (cimmyt), mexico. the experiments were carried out in upland conditions at cap?o bonito and under irrigation at mococa, in 2007 and 2008. the following characters were evaluated: yield (kg ha-1), plant height, head length and raquis internode length (cm), number of grains per spike and 100 grains weight (g). the tolerance to aluminum toxicity was evaluated in nutrient solution, under laboratory conditions. 'iac-1001' and 'iac-1003' showed good performance in relation to grain yield at the two locations. the inbred lines 2, 9 and 13 showed shorter semi dwarf plant type; inbred lines 4, 15 and the cultivar iac-1001 had longer heads; 'iac-1001' and 'iac-1002' exhibited more fertile spikes; 'iac-1003' heavier grains and the inbred lines 1, 4, 15 and 17 presented higher raquis internode length. the more productive genotypes tent to present taller semi dwarf plant types, more of grain per spike and heavier grains. the inbred lines from the iac breeding program were tolerant to aluminum toxicity and the check cultivars were sensitive.
Phylogenetic correlograms and the evolution of body size in South American owls (Strigiformes)
Diniz-Filho José Alexandre Felizola,Sant'Ana Carlos Eduardo Ramos de
Genetics and Molecular Biology , 2000,
Abstract: During the last few years, many models have been proposed to link microevolutionary processes to macroevolutionary patterns, defined by comparative data analysis. Among these, Brownian motion and Ornstein-Uhlenbeck (O-U) processes have been used to model, respectively, genetic drift or directional selection and stabilizing selection. These models produce different curves of pairwise variance between species against time since divergence, in such a way that different profiles appear in phylogenetic correlograms. We analyzed variation in body length among 19 species of South American owls, by means of phylogenetic correlograms constructed using Moran's I coefficient in four distance classes. Phylogeny among species was based on DNA hybridization. The observed correlogram was then compared with 500 correlograms obtained by simulations of Brownian motion and O-U over the same phylogeny, using discriminant analysis. The observed correlogram indicates a phylogenetic gradient up to 45 mya, when coefficients tend to stabilize, and it is similar to the correlograms produced by the O-U process. This is expected when we consider that body size of organisms is correlated with many ecological and life-history traits and subjected to many constraints that can be modeled by the O-U process, which has been used to describe evolution under stabilizing selection.
Vulnerabilidade no manejo dos resíduos de servi?os de saúde de Jo?o Pessoa (PB, Brasil)
Ramos,Yoly Souza; Pessoa,Yldry Souza Ramos Queiroz; Ramos,Yluska de Souza; Netto,Fernando de Barros Araújo; Pessoa,Carlos Eduardo Queiroz;
Ciência & Saúde Coletiva , 2011, DOI: 10.1590/S1413-81232011000900023
Abstract: the discussion in the academy on solid urban waste residues (uwr) is analyzed, with health service waste (hsw) being an integral part of uwr, not necessarily in terms of the amount generated, but due to the risk potential to collective and environmental health. the scope of the study was to verify the vulnerability of uwr handling in primary, secondary and tertiary healthcare units in jo?o pessoa in the state of paraíba. this involved a quantitative, exploratory and descriptive investigation of the handling of uwr, using a checklist and analytical evaluation of the vulnerability of hsw handling for data collection. it was detected that 21.05% of the establishments failed to separate hazardous waste, 26.34% did not standardize plastic disposal bags, and 47.37% of the workers responsible for collection were not trained to handle hsw. it was concluded that the vulnerability of hsw handling in jo?o pessoa in the order of 48.02%, was significant, potentially contributing to the deterioration of environmental and collective health and leading to a public health problem.
EFEITO DE DIFERENTES DOSES DE CLOPROSTENOL SóDICO NO PERíODO PóS-PARTO DE VACAS DE CORTE
Carlos Ant?nio de Carvalho Fernandes,Regis Jose de Carvalho,Eduardo Ramos de Oliveira,Jo?o Henrique Moreira Viana
Ciência Animal Brasileira , 2012,
Abstract: Reestablishment of reproductive activity after parturition is dependent on two physiological processes, uterine involution and reestablishment of the ovarian luteal cyclic activity. Impaired or delayed uterine involution can affect ovarian activity. Prostaglandin F2 (PGF2 ) has an important function in uterine involution. The use of PGF2 synthetic analogous in bovine postpartum, however, has been limited. The aim of this study was to compare the effect of two different doses of a racemic cloprostenol mixture (D+L-Cloprostenol) given in the postpartum period, on reproductive performance of crossbred beef cows. Beef cows with normal parturition were randomly distributed into three groups: G1(n=144), Control Group; G2 (n=145), 0.530mg of D+L-Cloprostenol, given IM at three to five days after parturition, and the G3 (n=145), 1.060 mg of D-Cloprostenol, in the same schedule of group 2. The following parameters evaluated were: services per conception ( 2), days from parturition to first estrus, and open days (Tukey test). There was no difference in body score condition among groups at parturition or during postpartum period (P>0.05). There was also no difference in the number of services per conception. The average number of days from parturition to first estrus was 88.77 + 23.64a; 77.59 + 26.95b and 76.22 + 26.28b, and the average number of open days open was 97.34 26.54a, 86.38 28.81b and 85.23 30.12b for groups 1, 2 and 3, respectively (P<0.05). Regardless cloprostenol doses, the treatments anticipated the beginning of reproductive activity in more than 10 days. The treatment with sodic cloprostenol in the post-partum period of zebu beef cows is an alternative to reduce anestrous postpartum and open days.
Monoraphidium and Ankistrodesmus (Chlorophyceae, Chlorophyta) from Pantanal dos Marimbus, Chapada Diamantina, Bahia State, Brazil
Ramos, Geraldo José Peixoto;Bicudo, Carlos Eduardo de Mattos;Góes Neto, Aristóteles;Moura, Carlos Wallace do Nascimento;
Hoehnea , 2012, DOI: 10.1590/S2236-89062012000300006
Abstract: this study aimed to identify taxa belonging to the genera monoraphidium and ankistrodesmus (chlorophyceae, chlorophyta) in two wetland areas of pantanal dos marimbus (baiano and remanso) in the marimbus-iraquara environmental protection area, bahia state, brazil, and contribute to the knowledge of chlorophyceae of bahia state and brazil. the materials studied, which were of periphytic and metaphytic origin, came from 64 samples collected in april and june 2011. we identified 18 taxa, 13 from monoraphidium and five from ankistrodesmus. eight taxa were additions to the continental microalgae flora of northeastern brazil. two taxa rarely found in brazil were collected during the study: monoraphidium dybowskii and m. litorale.
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