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Search Results: 1 - 10 of 511573 matches for " Eloísa Helena A.;Silva "
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Antioxidant capacity and biological activity of essential oil and methanol extract of Conobea scoparioides (Cham. & Schltdl.) Benth.
Rebelo, Monaliza M.;Silva, Joyce Kelly R. da;Andrade, Eloísa Helena A.;Maia, José Guilherme S.;
Journal of the Brazilian Chemical Society , 2009, DOI: 10.1590/S0103-50532009000600005
Abstract: the essential oils of the sub-aquatic plant conobea scoparioides (fresh and dried previously) showed yields of 3.4 and 3.3%, respectively. the main identified constituents were thymol methyl ether (39.6 and 47.7%), thymol (40.0 and 26.4%), α-phellandrene (12.1 and 14.3%) and p-cymene (1.5 and 1.7%), totalizing more than 90% of the oils. the dpph radical scavenging activity (ec50) of the oils and extract was 46.7 ± 3.6 μg ml-1 in the fresh plant (cso-f), 56.1 ± 2.4 μg ml-1 in the dried plant (cso-d), and 23.0 ± 2.2 μg ml -1 in the methanol extract. the extract (cse-d)value is comparable to bht (19.8 ± 0.5 μg ml-1) used as antioxidant standard. the mean value of the oils is twice smaller but equally important as antioxidant agent. the mean amount of total phenolics (tp, 124.6 ± 8.7 mg gae per g) and the trolox equivalent (teac, 144.1 ± 4.9 mg te per g) of the methanol extract confirmed the significant antioxidant activity of c. scoparioides. similarly, in the brine shrimp bioassay (artemia salina) the mean value of the lethal concentration for the oils (lc50, 7.7 ± 0.3 μg ml-1) was ten times higher than the methanol extract (lc50, 77.6 ± 7.1 μg ml-1) showing important biological activity.
Antioxidant capacity and biological activity of essential oil and methanol extract of Hyptis crenata Pohl ex Benth
Rebelo, Monaliza M.;Silva, Joyce Kelly R. da;Andrade, Eloísa Helena A.;Maia, José Guilherme S.;
Revista Brasileira de Farmacognosia , 2009, DOI: 10.1590/S0102-695X2009000200009
Abstract: the essential oils of fresh and dried leaves and fine stems of hyptis crenata furnished the following yields: 1.4% and 0.9%. the main volatile constituents were ±-pinene (22.0%; 19.5%), 1,8-cineole (17.6%; 23.2%), 2-pinene (17.0%; 13.8%), camphor (4.7%; 11.6%), limonene (5.4%; 4.4%) and 3-terpinene (3.5%; 2.4%), totalizing more than 70% in the oils. the dpph radical scavenging activity (ec50, 16.7 + 0.4 μg/ml) of the methanol extract was comparable to bht (19.8 ± 0.5 μg/ml) showing a significant antioxidant activity. the oils showed low activities. the amount of total phenolics (tp, 373.0 + 15.9 mg gae/g) and trolox equivalent (teac, 226.8 + 0.5 mg te/g) confirmed the antioxidant activity of the methanol extract that can be attributed to the presence of polar phenolic compounds. in the brine shrimp bioassay the lethal concentrations (lc50) for the oil and methanol extract were 6.7 + 0.2 μg/ml and 13.0 + 3.7 μg/ml, respectively, providing important evidence of their biological activities.
Essential oil composition of Croton palanostigma Klotzsch from north Brazil
Brasil, Davi do Socorro B.;Muller, Adolfo Henrique;Guilhon, Giselle Maria S. P.;Alves, Cláudio Nahum;Andrade, Eloísa Helena A.;Silva, Joyce Kelly R. da;Maia, José G. S.;
Journal of the Brazilian Chemical Society , 2009, DOI: 10.1590/S0103-50532009000600026
Abstract: the essential oils of leaves, twigs, branches, trunk bark and fruits of croton palanostigma were analyzed by gc and gc-ms. the main compounds found in the oil of the leaves were linalool (25.4%), (e)-caryophyllene (21.0%), methyleugenol (17.2%) and β-elemene (6.0%); in the oil of the twigs were α-pinene (41.4%), limonene (29.0%), sabinene (11.5%) and β-pinene (5.7%); in the oil of the branches were methyleugenol (24.1%), (e)-methylisoeugenol (15.3%), α-pinene (11.2%) and (e)-caryophyllene (8.5%); in the oil of the trunk bark were a-pinene (31.6%), methyleugenol (25.6%) and (e)-methylisoeugenol (23.7%); and in the oil of the fruits were linalool (42.7%), methyleugenol (16.3%) and β-elemene (6.4%). statistical analysis showed that the leaves and fruit, and the branches and trunk bark, have significant similarities between them. in addition, the trunk bark oil has high brine shrimp larvicidal activity (lc50, 3.71 ± 0.01 mg ml-1).
Database of the Amazon aromatic plants and their essential oils
Maia, José Guilherme S.;Andrade, Eloísa Helena A.;
Química Nova , 2009, DOI: 10.1590/S0100-40422009000300006
Abstract: the aromatic flora of the amazon has been inventoried for 30 years. in this sense, were made over 500 field trips to collect over 2500 plants and to obtain more than 2000 essential oils and aroma concentrates, all of them submitted to gc and gc-ms. this work led to the creation of a database for the aromatic plants of the amazon, which catalogs general information about 1250 specimens. the database has allowed the publication of the chemical composition of the oils and aromas of more than 350 species, associated with a larger number of chemical types. the essential oils of many species offer optimum conditions for economic exploitation and use in national and international market of fragrances, cosmetics, agricultural and household pesticides.
The analyst's desire in the clinic of anorexia
Silva, Mariana Benatto Pereira da;Pereira, Mario Eduardo Costa;Celeri, Eloísa Helena Valler;
Revista Latinoamericana de Psicopatologia Fundamental , 2010, DOI: 10.1590/S1415-47142010000200004
Abstract: the present work deals with the issue of the analyst's desire in the psychoanalytical treatment of anorexia. it analyzes important elements to establish transference in these cases, as the pursuit of death and the choice of refusing food as a way of controlling the demands of the other. it then discusses the "analist's desire" function in this clinic. rejecting the definition of a treatment model and the structural categorization of anorexia, we can find in the cases of the girl of angouleme (charcot) and sidonie (m. mannoni) present possible subjective ways to get out of this psychopathological impasse, by means of this function.
Tamanho e rigidez dos objetos influenciam os ajustes proximais e distais do alcance de crian?as?
Silva, Fernanda P. S.;Rocha, Nelci A. C. F.;Tudella, Eloísa;
Brazilian Journal of Physical Therapy , 2011, DOI: 10.1590/S1413-35552011000100003
Abstract: background: it has been found that objects influence the adjustments to reaching of breastfeeding infants, however, it has not been investigated whether these adjustments change in older infants. objectives: the aim of this study was to determine whether the size and rigidity of objects influence the proximal and distal adjustments to reaching of infants of 6, 7, 8 and 36 months of age. methods: nine healthy infants were presented with: one large rigid, one small rigid, one large malleable and one small malleable object. the movements were videotaped and later analyzed qualitatively with regard to proximal (unimanual and bimanual reaching) and distal adjustments (horizontal, vertical and oblique hand orientation, opened, half-open and closed hand) and with regard to grasping of these objects (with and without). friedman test and dunn multiple comparisons were applied and 0.05 was considered as a significant difference. results: infants of 36 months of age performed more unimanual reaching than younger infants. additionally, at all ages, unimanual reaching was particularly performed for small objects. at 36 months of age infants guided the hand horizontally to touch and grasp the objects, while at 6 and 7 months the hand orientation was oblique to touch and vertical to grasp the objects, regardless of the object's properties. over the months, both at the beginning and at the end of reaching, the hands became more open, especially to touch the large rigid object, and infants increasingly performed reaching with successful grasping, especially for malleable or small objects. conclusions: from 6 to 36 months of age, the reaching became more refined and the infants adjusted to the different properties of the objects which were observed through changes in the proximal and distal adjustments.
Paracoccidioidomycosis in the state of Maranh?o, Brazil: geographical and clinical aspects
Matos, Wilma Batista de;Santos, Gisele Maria Campelo dos;Silva, Vitor Emmanuel Bou?as da;Gon?alves, Eloísa da Gra?a do Rosário;Silva, Antonio Rafael da;
Revista da Sociedade Brasileira de Medicina Tropical , 2012, DOI: 10.1590/S0037-86822012000300020
Abstract: introduction: the study aimed to show the situation of paracoccidioidomycosis in the state of maranh?o, brazil. methods: this study is a descriptive case series developed in two stages. first, a survey of cases originating from the state of maranh?o at the instituto de doen?as tropicais natan portela, piauí (idtnp) from 1997 to 2007, and second, the clinical description of 29 cases diagnosed in the centro de referências em doen?as infecciosas e parasitárias, maranh?o (credip) from 2004 to 2010. results: two hundred and sixteen cases have been cataloged at the idtnp. west, east, and central regions of the state of maranh?o recorded 90.3% of cases proving to be important areas for study. the western region, with a prevalence of 10.8/100,000 inhabitants, has a significantly higher proportion of cases than the northern, southern, and eastern regions (p < 0.05). the occurrence was higher in men with 89.3% of cases, and the male-to-female ratio was 8.4:1. the majority of patients were older than 20 years, lived in rural areas, and had farming or soil management as main occupation (73.8%). at credip, 29 cases were diagnosed, of which 26 (89.6%) had multifocal manifestations. mucous tissues were involved more (75.8%) frequently, followed by lymph nodes, skin, and lungs with 65.5%, 39% and 37.9 %, respectively. the diagnosis was made by combining direct examination, culture, and histopathology. conclusions: the study shows the geographical distribution and the epidemiological and clinical aspects of paracoccidioidomycosis, revealing the significance of the disease to the state of maranh?o.
Estudo comparativo entre duas técnicas de tonsilectomia: bisturi harm?nico (Ultracision) e dissec??o tradicional com bisturi de lamina fria
Ramos, Fernando A.;Ferreira, Roberto D. P.;Silva, Rubens H. da;Prado, Eloísa P. do;Corso, Renato J.;Pinto, José Antonio;
Revista Brasileira de Otorrinolaringologia , 2004, DOI: 10.1590/S0034-72992004000300006
Abstract: tonsillectomy is the most commom surgical procedure in otolaringology. the modifications and the technique surgical evolutions aim to simplifly and reduce the complications. the ultacisionò harmonic scalpel begin to be used in 1999 in tonsillectomies with good outcomes. aim: to compair the time of the procedure, bleeding and the need of trans operative hemostasis, post operative pain, healing aspect of the tonsilar fossa and complications in patients submitted to tonsillectomy with cold and ultrassonic scalpel. study design: transversal cohort. material and method: twenty six patients underwent tonsillectomy: 13 using the traditional thecnique with cold instruments and 13 using the ultrassonic one. they were evaluated with a standart protocol. the post operative pain were graduated through the horizontal visual scale analogue. results: surgical time were shorter with the ultrassonic thecnique compared to the traditional cold instruments. the amount of stitch at tonsilar fossa was lesser than the traditional thecnique. there were no post operative statistical difference in pain and in the aspect of the tonsilar fossa. conclusion: the ultrassonic scalpel is an excellent choice in surgeries where surgical time and transoperatory bleeding are important.
Doen?a de Chagas no Estado do Maranh?o, Brasil: registro de casos agudos no período de 1994 a 2008
Cutrim, Flávia Stella Rego Furtado;Almeida, Irandir Augusto;Gon?alves, Eloísa da Gra?a do Rosário;Silva, Antonio Rafael da;
Revista da Sociedade Brasileira de Medicina Tropical , 2010, DOI: 10.1590/S0037-86822010000600021
Abstract: introduction: chagas' disease is not considered an endemic disease in the state of maranh?o. however, entomological surveys showed high natural vector infection indices and acute cases have been identified in the last few decades. this study aimed to analyze the social, demographic and environmental conditions involved in transmission. methods: the study describes acute chagas' disease identified from 1994 to 2008. information regarding the cases was obtained from the information system for notifiable diseases (sinan), national health foundation (funasa) database and medical records. entomological surveys were conducted from 2002. results: data analysis indentified 32 cases from 17 municipal districts, with 84.4% of patients from rural areas. the disease was more frequent in men (67%). the most frequent occupation was student, 38.9% of cases, followed by farmer and hunter, 27.8%. conclusions: the study suggests that transmission was vectorial and occurred in the wild or peridomicile.
Situa??o epidemiológica da leishmaniose visceral, na Ilha de S?o Luís, Estado do Maranh?o
Silva, Antonio Rafael da;Tauil, Pedro Luiz;Cavalcante, Maria Neuza Souza;Medeiros, Maria Nilza;Pires, Benedito Nascimento;Gon?alves, Eloísa da Gra?a do Rosário;
Revista da Sociedade Brasileira de Medicina Tropical , 2008, DOI: 10.1590/S0037-86822008000400007
Abstract: the results from a field study on autochthonous visceral leishmaniasis on the island of s?o luís are presented. this study started in 2004 and finished in 2006 and had the aim of ascertaining the determinant epidemiological and clinical characteristics of this endemic disease. two hundred ninety nine autochthonous cases were analyzed, of which 83.6% were children younger than 9 years old and 54.1% were male. the disease occurred in all months of the year, with a peak in june. the coefficient of incidence decreased from 46.1 to 35.2 cases per 100,000 inhabitants over the years studied. the diagnosis was confirmed by laboratory tests in 93.3% of the cases. the treatment of choice was based on n-methylglucamine, with a cure rate of 96.1%. the mean lethality rate was 3.7%. because of the absence of systematic control actions, the authors propose the creation of a specific program to be developed by the municipalities under the coordination of the state department of health.
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