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Search Results: 1 - 10 of 32001 matches for " Donizetti dos Santos "
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Manejo anestésico de paciente com síndrome de Cri Du Chat (miado do gato): relato de caso
Santos, Klaus Morales dos;Rezende, Daniel Camara de;Borges, Ziltomar Donizetti de Oliveira;
Revista Brasileira de Anestesiologia , 2010, DOI: 10.1590/S0034-70942010000600009
Abstract: background and objectives: cri du chat syndrome is a chromosomal disorder with peculiar clinical characteristics including airways abnormalities that require special care by anesthesiologists when handling those patients. objective: to present a case of outpatient anesthesia in a patient with cri du chat syndrome and discuss the anesthetic aspects related to this disorder. case report: male patient, 14 years old, 25 kg, with cri du chat syndrome, physical status asa p2, was admitted for upper gastrointestinal endoscopy and esophageal dilation. the patient had mental retardation, a few episodes of seizures, and marked hypertonia of the limbs. airways exam showed limited cervical mobility and thyromental distance less than six centimeters. the patient was unable to comprehend verbal commands, making it difficult to undertake a complete assessment of the airways. other findings on physical exam included microcephaly, micrognathism, subtle strabismus, limb hypertonia with flexion, and protrusion of the tip of the tongue. intravenous fentanyl 50 μg, midazolam 1 mg, and propofol 60 mg were administered. the patient was maintained on spontaneous ventilation. the procedure lasted 5 minutes, without intercurrences. conclusions: patients with cri du chat syndrome have clinical characteristics that are very important for their anesthetic management, being the responsibility of the anesthesiologist to consider carefully the structural particularities of each patient.
PARTICIPA O NOS LUCROS OU RESULTADOS (PLR): PERSPECTIVAS DO ESTADO DA ARTE
Claudio Marcelo Edwards Barros,Jocelino Donizetti Teodoro,Márcia Maria dos Santos Bortolocci Espejo
Revista de Contabilidade do Mestrado em Ciências Contábeis da UERJ , 2012,
Abstract: Este estudo visa desenvolver uma análise das tendências temáticas e metodológicas e oportunidades de pesquisa sobre a Participa o nos Lucros ou Resultados (PLR) em periódicos nacionais e internacionais, veiculados entre 1999 e 2009. é um estudo que utiliza técnicas de cienciometria e queconstatou 61 artigos sobre o tema, sendo 11 de origem nacional e 50 de origem internacional divididos em 37 periódicos. Identificou-se predominancia da abordagem contingencial e econ mica como enfoque metodológico de teoria de base em periódicos nacionais e internacionais, respectivamente. Observou-se que mais de 50% dos estudos sobre PLR foram desenvolvidos por menos de 20% dosautores, constituindo referências sobre o tema que podem respaldar estudos futuros. Os resultados indicam carência de estudos empíricos nacionais e demonstram intensa investiga o empírica em publica es internacionais, representando oportunidades de pesquisa sobre o tema no Brasil.
Diversidade e fun??o de fungos micorrízicos arbusculares em sucess?o de espécies hospedeiras
Gomide, Plínio Henrique Oliveira;Santos, José Geraldo Donizetti dos;Siqueira, José Oswaldo;Soares, Cláudio Roberto Fonsêca Sousa;
Pesquisa Agropecuária Brasileira , 2009, DOI: 10.1590/S0100-204X2009001100016
Abstract: the objective of this work was to evaluate the effects of pre-cultivation of different plant species and of arbuscular mycorrhizal fungi (amf) on the sporulation, colonization and growth of urochloa cultivated in succession, under greenhouse conditions. plants were grown in pots containing a sterilized mixture of very clayey oxisol and washed river sand at a 2:1 ratio (v/v). a completely randomized experiment with nine treatments and ten replicates was initially tested: six mycotrophic plant species; a non-mycotrophic species (forage turnip); a treatment with urochloa decumbens and a control treatment without plants. all treatments received a mixture of eight amf species. the mycorrhizal colonization and sporulation of urochloa decumbens, by means of amf propagules obtained from the remaining mycotrophic and non-mycotrophic species, was evaluated. there was difference among the host plants in terms of percentage of mycorrhizal colonization and total production of spores, and five out of the eight isolates studied were identified. glomus clarum was the dominant amf in most of the treatments, followed by scutellospora heterogama and g. etunicatum. pre-cultivation plant species had no effect on the amf diversity; the fungus species were determinant for the composition of the fungal isolates.
Soil Management and Efficiency of Rhizobia Strains of Cowpea Vigna unguiculata (L.) Walp. in the Tropics Manejo de Suelo y Eficiencia de Cepas de Rizobio de Frijol Vigna unguiculata (L.) Walp. en los Trópicos
José Geraldo Donizetti dos Santos,Alana das Chagas Ferreira Aguiar,Edilson Máximo Silva Junior,Danubia Lemes Dadalto
Chilean Journal of Agricultural Research , 2011,
Abstract: In the humid tropics, the largest obstacle to the implementation of sustainable farming systems is the reduced efficiency of nutrient use by crops. This study assesses the effectiveness of five selected rhizobia strains in symbiosis with cowpea (Vigna unguiculata (L.) Walp.), with the objective of replacing N fertilization in the predominant agricultural system used by smallholder farmers. The study was carried out in three adjacent areas with distinct agricultural uses: conventional tillage, itinerant agriculture, and a no-till system. The experimental design was in randomized complete blocks with four replicates and seven treatments: five rhizobia strains (BR3262, BR3267, BR3299, INPA3-11B, and UFLA 3-84) and two controls without inoculation (one without mineral N and another fertilized with 74 kg N ha-1). We measured the dry mass of 100 grains, nodules and shoots, as well as cowpea yields and calculated relative and absolute efficiency indices for dry biomass production of cowpea shoots. Agricultural uses affected the number and dry mass of the nodules and, consequently, the mass of the dry plant matter and bean yield. In terms of yield, there was a major difference between the conventional and the itinerant systems. Yield was around four times as high in the itinerant system (1009.9 kg ha-1 compared to 243.7 kg ha-1). Under conditions of cohesion-prone soils, the system of conventional tillage reduces the possibility of cultivation of a second harvest in the year even with inoculation or N fertilization. En los trópicos húmedos, el mayor obstáculo para la aplicación de sistemas de agricultura sostenible es la reducción de la eficiencia del uso de nutrientes por los cultivos. Este estudio evalúa la eficacia de cinco cepas de rizobios seleccionados en simbiosis con frijol (Vigna unguiculata (L.) Walp.), con el objetivo de sustituir la fertilización nitrogenada en el sistema de uso de suelo predominante utilizado por los peque os agricultores. El estudio se llevó a cabo en tres zonas adyacentes de distintos usos agrícolas: labranza convencional, agricultura itinerante, y un sistema de no laboreo. El dise o experimental fue en bloques al azar con cuatro repeticiones y siete tratamientos: cinco cepas de rizobios (BR3262, BR3267, BR3299, INPA3-11B y UFLA 3-84) y dos controles sin inocular (uno sin N mineral y otro fertilizado con 74 kg de N ha-1). Se midió el peso en seco de 100 granos, de los nódulos y de los brotes, así como los rendimientos de frijol y se calcularon los índices de eficiencia relativa y absoluta para la producción de biomasa seca de los
Soil Management and Efficiency of Rhizobia Strains of Cowpea Vigna unguiculata (L.) Walp. in the Tropics
Donizetti dos Santos,José Geraldo; Ferreira Aguiar,Alana das Chagas; Silva Junior,Edilson Máximo; Lemes Dadalto,Danubia; Rodrigues Sousa,Merijane; Ribeiro Xavier,Gustavo; Gomes de Moura,Emanoel;
Chilean journal of agricultural research , 2011, DOI: 10.4067/S0718-58392011000400015
Abstract: in the humid tropics, the largest obstacle to the implementation of sustainable farming systems is the reduced efficiency of nutrient use by crops. this study assesses the effectiveness of five selected rhizobia strains in symbiosis with cowpea (vigna unguiculata (l.) walp.), with the objective of replacing n fertilization in the predominant agricultural system used by smallholder farmers. the study was carried out in three adjacent areas with distinct agricultural uses: conventional tillage, itinerant agriculture, and a no-till system. the experimental design was in randomized complete blocks with four replicates and seven treatments: five rhizobia strains (br3262, br3267, br3299, inpa3-11b, and ufla 3-84) and two controls without inoculation (one without mineral n and another fertilized with 74 kg n ha-1). we measured the dry mass of 100 grains, nodules and shoots, as well as cowpea yields and calculated relative and absolute efficiency indices for dry biomass production of cowpea shoots. agricultural uses affected the number and dry mass of the nodules and, consequently, the mass of the dry plant matter and bean yield. in terms of yield, there was a major difference between the conventional and the itinerant systems. yield was around four times as high in the itinerant system (1009.9 kg ha-1 compared to 243.7 kg ha-1). under conditions of cohesion-prone soils, the system of conventional tillage reduces the possibility of cultivation of a second harvest in the year even with inoculation or n fertilization.
Electron-Domain Wall Interaction with a Ferromagnetic Spherical Domain Wall  [PDF]
Leonardo dos Santos Lima
Journal of Modern Physics (JMP) , 2016, DOI: 10.4236/jmp.2016.713148
Abstract: The interaction between an electron with a three-dimensional domain wall was investigated using the Born’s expansion of the S scattering matrix. We obtain an influence of the scattering of the electron with the ferromagnetic domain wall in the spin wave function of the electron with the aim to generate the knowledge about the state of the electron spin after the scattering. It relates to the recent problem of generation of the spin polarized electric current. We also obtain the contribution of the electron-wall domain interaction on the electric conductivity \"\", through the wall domain, where we have obtained a peak of resonance in the conductivity for one value of \"\" .
Natural Rubber Latex: Study of a Novel Carrier for Casearia sylvestris Swartz Delivery
Felipe Azevedo Borges,Luis Felipe Cesar Bolognesi,Alberto Trecco,Bruno de Camargo Drago,Larisa Baldo de Arruda,Paulo Noronha Lisboa Filho,Elaise Gon?alves Pierri,Carlos Frederico de Oliveira Graeff,André Gonzaga dos Santos,Matheus Carlos Romeiro Miranda,Rondinelli Donizetti Herculano
ISRN Polymer Science , 2014, DOI: 10.1155/2014/241297
Abstract: Natural rubber latex (NRL) from Hevea brasiliensis has showed interesting biomedical properties as improving wound healing, cell adherence, tissue formation, and angiogenesis. It is used for biosynthesis of nanoparticles, sensors and prosthesis and for drug delivery systems (for drugs, plant extracts, and nanoparticles). To enhance its wound healing properties was incorporated Casearia sylvestris Swartz extract, whose pharmacological activity includes anti-inflammatory, analgesic, antiseptic, antiulcer, and antitumor due to its casearins and phenols. Results showed the prolonged release of its compounds (35 days) and the mechanism of release is super case II ( ) by Korsmeyer-Peppas model. Although SEM shows different sizes of clusters at the surface, the release is homogeneous through the biomembrane. FTIR shows no interaction between the matrix and the extract, with computation of the presence of some casearins. 1. Introduction Natural rubber latex (NRL) extracted from Hevea brasiliensis (rubber tree) is a colloidal system containing 50% of water, 4-5% of nonrubber (as proteins, lipids, etc.), and 30–45% of rubber particles (cis-1,4-polyisoprene) [1]. When in contact with air, the proteins that stabilize rubber particles get in degradation and lead to latex coagulation [1]. Latex is largely used in artefacts such as gloves, condoms, and baby bottle teats. Proteins in latex also possess angiogenic properties [1], propitiate cell adhesion, and accelerate wound healing [2]. It has been used as prosthesis (vascular [3], tympanum [4], bladder [5], etc.) with no allergy or rejection, demonstrated to be biocompatible and suitable for biomedical application [2]. It has also been used for nanoparticles production [6], delivery system [7], and occlusive biomembrane [8], among others. Casearia sylvestris Swartz (popularly known as “gua?atonga”) is used traditionally to treat diarrhea, skin diseases, snakebite, antiulcer, and so forth [9]. Its bioactive properties are related to its secondary metabolites such as presence of casearins (A–X) and phenols. Related to its pharmacological applications to wound healing, it shows anti-inflammatory [10], antiseptic [11], and analgesic [12] properties; moreover, casearins possess oxygenated backbone related to remarkable cytotoxic and antitumor action [9] and phenol is related to antioxidant activity [13]. Delivery system is important to avoid multiple doses, increasing the patient compliance to the therapy. One possible way to accelerate the tissue repair process is to incorporate the Casearia sylvestris Sw. extract in NRL
An Empirical Model for Dinitrogen Gas Emission from Inland Waters  [PDF]
Elizabeth Sikar, Marco Aurelio dos Santos, Ednaldo Oliveira dos Santos
Atmospheric and Climate Sciences (ACS) , 2019, DOI: 10.4236/acs.2019.91001
Abstract: The motivation to calculate this empirical model resulted from often observing—at the time disconcerting—excess dinitrogen gas (N2 concentration > background concentration) in bubble-gas emission samples, collected primarily for the purpose of carbon budget research, from Brazilian rivers and reservoirs sampled during roughly 100 field surveys lasting 4 days each on average and executed between years 2000 and 2012. We model the (serendipitously) measured dinitrogen gas above environmental concentration (N2aec) escaping in bubbles from Brazilian rivers as a function of dissolved nitrogen (N) in water. To this model, we mathematically add a pre-existing model of diffusively emitted denitrified dinitrogen (also as a function of dissolved N) from streams in the United States of America (USA). The resulting model predicts denitrified dinitrogen water-air emission from inland waters in the USA, China and Germany.
O ensino de recrea o: repensando algumas práticas
Edmilson Santos dos Santos
Movimento , 2001,
Abstract: Thispaper aims at analyzing the topics by which the books which suggest practical activities in recreation justify certain procedures and authorize certain academic practices as valid. To reach this result 22 books dealing with child recreation were analyzed. The strategies used by experimental literature to build truth on the discipline of Recreation are subjected to the separation between theory and practice, the backing up of the child's heteronomy and the simplification of reality.
Eficiência de fungos micorrízicos arbusculares isolados de solos de áreas de minera??o de bauxita no crescimento inicial de espécies nativas
Santos, José Geraldo Donizetti;Siqueira, José Osvaldo;Moreira, Fátima Maria de Souza;
Revista Brasileira de Ciência do Solo , 2008, DOI: 10.1590/S0100-06832008000100014
Abstract: arbuscular mycorrhizal fungi (amf) establishing efficient symbiosis with plants play an important role on ecosystem sustainability and can be useful for revegetation of degraded lands. symbiotic efficiency is related to amf genotypes and plant species, as well as to environmental conditions that may affect the expression of symbiotic relationships. thus, the first step to an efficient amf symbiosis management is to study fungal variability regarding the efficiency with different host species. in this study root colonization and efficiency of several amf isolates, obtained from bauxite minespoil areas from two distinct environments ("serra" and "campo"), were evaluated for seedling growth of pioneer species [aroeira (schinus terebenthifolius) and trema (trema micrantha)], and secondary species [a?oita-cavalo (luehea grandiflora) and sesbania (sesbania virgata)], in a low fertility soil. the experiment was carried out under greenhouse conditions, for 120 days. each plant species, was treated with ten amf inoculation types (amf isolates or their mixtures): acaulospora longula, paraglomus occultum, glomus sp., gigaspora sp., acaulospora spinosa, and the mixture of all "campo" species; acaulospora scrobiculata, paraglomus occultum, glomus sp. and the mixture of all "serra" species. for a comparison two additional treatments were included: one inoculated with efficient glomus etunicatum, as reference, and an uninoculated treatment, as control. the growth of all plant species was lower in the absence of amf whereas amf inoculation enhanced plant growth. benefits varied according to isolates and plant species. all tested isolates or their mixtures were efficient in sesbania, while only one glomus sp. was inefficient for trema and aroeira and both glomus sp. isolates were inefficient for a?oita-cavalo. it was found that no isolate from bauxite mine spoil was more efficient than glomus etunicatum. however, several isolates from campo (gigaspora sp., paraglomus occultum and ac
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