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Search Results: 1 - 10 of 34891 matches for " Paulo Cesar Almeida "
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The Role of Nitrogen Fertilizers in Sugarcane Root Biomass under Field Conditions  [PDF]
Rafael Otto, Henrique Coutinho Junqueira Franco, Carlos Eduardo Faroni, André Cesar Vitti, Emídio Cantidio Almeida de Oliveira, Renata Alcarde Sermarini, Paulo Cesar Ocheuze Trivelin
Agricultural Sciences (AS) , 2014, DOI: 10.4236/as.2014.514164
Abstract: Sugarcane is used worldwide for sugar, ethanol and energy production. In Brazil, the shift from burned to unburned harvest systems resulted in increases in nitrogen fertilization rates, which can impact root architecture and biomass. The expectation is also an increase in sugarcane biomass. The study hypothesized that high N rates applied to sugarcane fields increases root growth and N stored in roots, promoting higher biomass and N accumulated in shoots. Two experiments were set up in Southeastern Brazil, on a Typic Kandiudox (TK) and Rhodic Eutrudox (RE). Four treatments were studied 1) N application in the plant-cane (0 and 120 kg·ha-1 N) and 2) N application in the ratoon (0 and 150 kg·ha-1 N). The shoot biomass and the root density (by the core method up to 0.6 m) were evaluated over the first ratoon crop cycle, and the N content in those compartments was also examined. There was no carry over effect on N applied at planting in root and shoot biomass in the ratoon crop cycle. At the RE site, the ratoon N fertilization increased root density in the superficial soil layer (0 - 0.2 m) and close to the plants (<0.3 m). The effect of N addition on root biomass, and biomass and N accumulated in shoot was limited in both sites. Increasing N rates in unburned sugarcane fields do not consistently increases root and shoot biomass under Brazilian field conditions.


Adapta??o transcultural para o Brasil da Exercise Benefits/Barriers Scale (EBBS) para aplica??o em idosos: uma avalia??o semantica
Victor, Janaina Fonseca;Ximenes, Lorena Barbosa;Almeida, Paulo Cesar de;
Cadernos de Saúde Pública , 2008, DOI: 10.1590/S0102-311X2008001200014
Abstract: this article describes the cross-cultural adaptation of the exercise benefits/barriers scale (ebbs) to the portuguese language and its application in elderly brazilians. the ebbs was originally developed in the united states to identify perceptions concerning the barriers to (and benefits of) physical exercise, and thus to determine factors affecting this practice. cross-cultural adaptation involved the following phases: initial translation, summary of the translation, retranslation into the original language (back-translation), review by an expert panel to evaluate semantic, idiomatic, experimental, and conceptual equivalence, and pre-test of the final version with 30 elderly subjects. the ebbs cross-cultural adaptation allowed proposing a preliminary portuguese-language version. however, to ensure that the cross-cultural equivalence between the original version and the translation has been fully achieved, it is necessary to compare the psychometric properties of the portuguese version and the original instrument, a crucial task that is now being performed and will soon be published.
A teoria da dupla heran a e a evolu o da moralidade
Fábio Portela Lopes de Almeida,Paulo Cesar coelho Abrantes
Principia : an International Journal of Epistemology , 2012,
Abstract: A darwinian evolutionary approach can contribute to reassess philosophical problems in different fields, including ethics and moral theory. Sociobiology and evolutionary psychology address these issues by presupposing mechanisms such as kin selection and reciprocal altruism. However, these mechanisms can’t account for cooperation in the human species. Dual inheritance theory addresses human cooperation differently, by taking into account the above-mentioned classical biological mechanisms without ignoring, however, relevant knowledge produced by social scientists. According to this approach, human social psychology comprises tribal social instincts and symbolic markers. One implication of this approach is that there are innate and universal moral principles hardwired in the human mind-brain, which where selected through an evolutionary process that makes life possible in large, structured social groups. Although innate, these principles are plastically shaped to meet the demands of different cultural niches in particular societies.
The ethics in the photo journalism of the digital age A ética no fotojornalismo da era digital
Cláudia Maria Teixeira de Almeida,Paulo Cesar Boni
Discursos Fotográficos , 2006,
Abstract: This article focuses the ethics in photojournalism. With the rise of digital technology and its capacity to enable to treat and manipulate images, a controversy came about over the ethics of professionals and information vehicles. The difference between treatment and manipulation of images is also covered in this study. A historical overview shows that photographic manipulation is not a newness or invention of digital technology. Ethics is within the professional, not in the tool. Este artigo aborda a ética no fotojornalismo. Com o advento da tecnologia digital – e conseqüente facilidade de tratamento e manipula o da imagem – criou-se uma polêmica em torno da ética de profissionais e de veículos de informa o. A diferen a entre tratamento e manipula o de imagens também faz parte do estudo. Um resgate histórico revela que a manipula o fotográfica n o é uma novidade ou inven o da tecnologia digital. A ética está no profissional e n o na ferramenta.
INTERA O VERBAL E ATIVIDADE PRáTICA EXPERIMENTAL INVESTIGATIVA: DIMENS ES PARA REPENSAR A FORMA O INICIAL DE PROFESSORES DE QUíMICA
Janaina Farias de Ornellas,Paulo Cesar de Almeida Raboni
Nuances : Estudos sobre Educa??o , 2013,
Abstract:
Composi??o química de um resíduo alcalino da indústria de papel e celulose (DREGS)
Almeida, Henrique Cesar;Silveira, Cristian Berto da;Ernani, Paulo Roberto;Campos, Mari Lucia;Almeida, Denice;
Química Nova , 2007, DOI: 10.1590/S0100-40422007000700032
Abstract: dregs is an alkaline solid by-product generated in the cellulose manufacturing industry that could be used to correct soil acidity. the present study aimed to evaluate the chemical composition of this product and some of its properties. the dregs presented 354 g kg-1 of calcium, neutralization capacity of 80.3%, and ph 10.7, besides low concentration of sodium (10.2 g kg-1), lead (62.9 mg kg-1) and cadmium (5.6 mg kg-1). thus, it is a product that can safely be used to increase the soil ph.
Influência da adi??o de um resíduo alcalino da indústria de papel e celulose na lixivia??o de cátions em um solo ácido
Almeida, Henrique Cesar;Ernani, Paulo Roberto;Albuquerque, Jackson Adriano;Mecab? Junior, José;Almeida, Denice;
Revista Brasileira de Ciência do Solo , 2008, DOI: 10.1590/S0100-06832008000400042
Abstract: alkaline by-products generated in the pulp and paper industry can be used to reduce soil acidity. however, the low mg and intermediate na values in these residues can negatively affect the bioavailability of some nutrients and soil properties. before recommending them, it is therefore imperative that their effects on the soil be evaluated. the objective of this study was to quantify the soil chemical composition and vertical mobility of cations due to application of alkaline industrial residue in different forms, in comparison to dolomitic limestone. the experiment was carried out in a laboratory, with a haplumbrept, from 2005 to 2006, using leaching columns (30 x 10 cm diameter). the treatments consisted of a 4 x 2 x 2 factorial design, including two previous values of soil ph with one control each, two alkaline compounds (industrial residue or dolomitic limestone) and two application methods (surface applied or soil incorporated). ten percolations were performed, at weekly intervals, in a volume of 300 ml of distilled water per week, corresponding to a total amount of 380 mm rain. 60 % of the na added leached from the soil-incorporate by-product, but this leaching decreased to 12 % when it was applied on the soil surface. the addition of alkaline residue did not cause leaching of ca, mg or k, and dolomitic limestone leached only 2.4 % of the ca and 7.2 % of added mg, demonstrating the low vertical mobility of these cations when applied from basic compounds to variable charge soils. the previous elevation of the soil ph decreased cation leaching substantially due to the increase of the soil negative charges. given the rainfall conditions in southern brazil, the amount of na added will disappear from the plow layer in less than one year after its application, so this product should not negatively affect any chemical or physical soil property.
Socio-Economic Profile of People with Disabilities: A Health Impact  [PDF]
Paula Marciana Pinheiro de Oliveira, Monaliza Ribeiro Mariano, Lorita Marlena Freitag Pagliuca, Jacqueline Mota da Silva, Paulo Cesar de Almeida, Giselly Oseni Barbosa Oliveira
Health (Health) , 2015, DOI: 10.4236/health.2015.75075
Abstract: The objective was to compare the socioeconomic profile and the repercussions for effects on the health of people with physical, hearing and visual of the main Ceará state associations in Brazil. Quantitative study carried out from March to August 2012 through a structured questionnaire with 120 subjects. Variables were: gender, age, education, family income and marital status. Studies are necessary to examine the effects of sociodemographic characteristics on health. The results indicate that the three deficiencies have different distributions in all age groups (p = 0.001), and auditory and visual obtained the highest percentage in the age group of 18 - 29 years (67.5% and 40%, respectively), while motor in the range of 30 - 49 (60%), if no association between level of education and disability was found (p = 0.553). Family income showed a statistically significant difference between disability (p = 0.044), with lower income in hearing loss (45%) and higher in the visual (42.5%). Studies have demonstrated that people with disabilities are not homogeneous. It is important to examine socioeconomic indicators, and individual needs and characteristics to plan effective action.
Physical Accessibility for Disabled People: Analysis of Toilet Facilities in Primary Health Care Units  [PDF]
Aline Cruz Esmeraldo áfio, Luciana Vieira de Carvalho, Juliana Freitas Marques, Paula Marciana Pinheiro de Oliveira, Paulo Cesar de Almeida, Lorita Marlena Freitag Pagliuca
Open Journal of Nursing (OJN) , 2016, DOI: 10.4236/ojn.2016.611091
Abstract: Background: Accessibility enables the effective participation of disabled persons in public and private areas and the use of urban equipment and street furniture. Objective: This study aimed to analyze the physical accessibility of toilet facilities in urban and rural primary health care units. Methods: It was a quantitative descriptive study conducted in 157 Primary Health Care Units of 16 municipalities in the Baturité Massif region, Ceará, Brazil. The study took place from August 2014 to May 2015, with a checklist type form, designed from the Technical Standard 9050 of the Brazilian National Standards Organization, specifying the ideal access conditions established by law to allow mobility of persons with physical disabilities. Data were processed through the Statistical Package for the Social Sciences software and organized into tables. Results: Toilets designed for physically disabled people were accessible as the location and signs (59.9%), identified with symbols for males and females (57.3%); however, the doorway width was smaller than needed to accommodate a wheelchair (77.7%). Inside the bathroom, only the forward approach was possible (59.9%). Grab bars positioned on the side and rear walls were inadequate or nonexistent (67.6%); toilet seats (91.1%) and toilet paper dispensers (96.2%) were mostly in inaccessible heights; flush controls in appropriate height (59.2%) and activated by light pressure (58%). Sinks without pedestal (51%), but higher than recommended (80.3%) and without single handle faucets (95.6%). It was verified that the toilets of basic health units located in urban areas had better accessibility conditions compared to those in rural areas. Conclusion: Results showed that the analyzed units presented physical inaccessibility in some toilet facilities, making it difficult or even impossible the accessibility for the disabled. The inclusion of accessibility features in health services for this clientele provides equal opportunities and social inclusion.
Warming Power of CO2 and H2O: Correlations with Temperature Changes  [PDF]
Paulo Cesar Soares
International Journal of Geosciences (IJG) , 2010, DOI: 10.4236/ijg.2010.13014
Abstract: The dramatic and threatening environmental changes announced for the next decades are the result of models whose main drive factor of climatic changes is the increasing carbon dioxide in the atmosphere. Although taken as a premise, the hypothesis does not have verifiable consistence. The comparison of temperature changes and CO2 changes in the atmosphere is made for a large diversity of conditions, with the same data used to model climate changes. Correlation of historical series of data is the main approach. CO2 changes are closely related to temperature. Warmer seasons or triennial phases are followed by an atmosphere that is rich in CO2, reflecting the gas solving or exsolving from water, and not photosynthesis activity. Interannual correlations between the variables are good. A weak dominance of temperature changes precedence, relative to CO2 changes, indicate that the main effect is the CO2 increase in the atmosphere due to temperature rising. Decreasing temperature is not followed by CO2 decrease, which indicates a different route for the CO2 capture by the oceans, not by gas re-absorption. Monthly changes have no correspondence as would be expected if the warming was an important absorption-radiation effect of the CO2 increase. The anthropogenic wasting of fossil fuel CO2 to the atmosphere shows no relation with the temperature changes even in an annual basis. The absence of immediate relation between CO2 and temperature is evidence that rising its mix ratio in the atmosphere will not imply more absorption and time residence of energy over the Earth surface. This is explained because band absorption is nearly all done with historic CO2 values. Unlike CO2, water vapor in the atmosphere is rising in tune with temperature changes, even in a monthly scale. The rising energy absorption of vapor is reducing the outcoming long wave radiation window and amplifying warming regionally and in a different way around the globe.
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