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Search Results: 1 - 10 of 83494 matches for " Ant?nio Ozaí da Silva "
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The communists in front of the wall: Marxim-Leninism between the denial and the affirmation of Stálinist tradition Os comunistas diante do muro: o marxismoleninismo entre a nega o e a afirma o da tradi o stálinista
Antnio Ozaí da Silva
Diálogos , 2010, DOI: 10.4025/dialogos.v3i1.300
Abstract: This article discusses the two principal parties representing the Stálinist tradition in our country: PCB and PC do B. The Brazialian Cmmunist Party (PCB), established in 1922, was hegemonic among Brazilian leftists for decades and was the hardcore of Marxism in our country. This party embodied the concepts of a Marxist-Leninist party and the prevailing theory and political culture of the international communist movement when Stálin defeated Trotsky within the URSS Communist Party and the Third International Socialist Association. Evidently there are other organizations and groups pervaded by the Stálinist tradition. Our analysis, however, will be restricted to PCB and to PC do B, trying to understand their political and ideological transformations and their reactions to the impact of the events in Eastern Europe: the overcoming or the maintenance of the Stálinist tradition. Este artigo trata dos principais partidos que representam a tradi o stalinista em nosso país: o PCB e o PC do B. O Partido Comunista Brasileiro (PCB), fundado em 1922, foi hegem nico na esquerda brasileira durante décadas e se constituiu no tronco principal do marxismo em nosso País. Este partido incorporou a concep o de partido marxista-leninista e a teoria e cultura políticas prevalecentes no movimento comunista internacional com a vitória de Stálin contra Trotsky no seio do Partido Comunista da URSS e da III Internacional. Evidentemente, há outras organiza es e grupos permeados pela tradi o stalinista. Aqui, nos limitaremos à análise do PCB e o PC do B, procurando apreender suas mudan as políticas e ideológicas e rea es ao impacto dos acontecimentos no Leste Europeu, isto é, os elementos de supera o e manuten o da tradi o stalinista.
Síntese e avalia??o da atividade antimicrobiana de novas 4-tiazolidinonas obtidas a partir de formilpiridina tiossemicarbazonas
Ver?oza, George Leonardo;Feitoza, Danniel Delmondes;Alves, Antnio José;Aquino, Thiago Mendon?a de;Lima, José Gildo de;Araújo, Janete Magali;Cunha, Ivana Gláucia B.;Góes, Alexandre José da Silva;
Química Nova , 2009, DOI: 10.1590/S0100-40422009000600008
Abstract: twelve novel 4-thiazolidinone derivatives (2a-l) have been synthesized by reacting formilpyridine thiosemicarbazones (1a-l) and anhydride maleic in toluene. their chemical structures were confirmed by ir, 1h and 13c nmr. the new compounds were submitted to in vitro evaluation against pathogenic gram-positive, gram-negative bacteria and yeasts. the findings obtained showed that the compounds 2a, 2d, 2e and 2g were effective against some of the bacterial strains used, whereas the compounds 2d, 2e and 2i exhibited a moderate antifungal activity against the yeast strains evaluated. an initial structure activity relationship (sar) was established.
Human Echinococcosis: A Neglected Disease
António Menezes da Silva
Gastroenterology Research and Practice , 2010, DOI: 10.1155/2010/583297
Abstract: Echinococcosis is among the most neglected parasitic diseases. Development of new drugs and other treatment modalities receives very little attention, if any. In most developed countries, Cystic Echinococcosis (CE) is an imported disease of very low incidence and prevalence and is found almost exclusively in migrants from endemic regions. In endemic regions, predominantly settings with limited resources, patient numbers are high. Whole communities do not have access to appropriate treatment. The choice of treatment modalities is limited because of poor infrastructure and shortage of equipment and drugs. In this context, CE meets the criteria for a neglected disease. Furthermore, the terminology related to the designations around the parasite, its evolution and some therapeutic procedures is not uniform and sometimes inappropriate terms and wrong designations are used based on incorrect concepts. Although all of us know the different aspects of the disease it is pertinent to remember some important points and, above all, to clarify some aspects concerning the hydatid cyst's nomenclature in order to understand better the therapeutic options in the liver locations, particularly the different surgical approaches. 1. Introduction I have frequently noticed both, in published articles and also in communications during scientific meetings, the use of wrong designations concerning the hydatid cyst, a designation used for Cystic Echinococcosis. It is not a different nomenclature but the use of inappropriate terms, which are based on incorrect concepts. I think it would be useful, for all of us, to use the same nomenclature. It is absolutely necessary that the nomenclature is correct and universally accepted. So, I think it is pertinent to write this paper in order to remember some important points and, above all, to clarify some aspects concerning the hydatid cyst’s nomenclature. Human Echinococcosis is a zoonotic infection caused by larval forms (metacestodes) of tapeworms of the genus Echinococcus found in the small intestine of carnivores. Although there are different species of Echinococcus described, only four of them—E. granulosus, E. multilocularis, E. oligarthrus and E. vogeli—are recognized as taxonomically relevant, and only the first two are pathogenic for humans. To distinguish the diseases caused by these two different species, the World Health Organization (WHO) proposed the designation Cystic Echinococcosis (CE) for the disease caused by E. granulosus and Alveolar Echinococcosis (AE) for the disease caused by E. multilocularis. The annual incidence
Migra??o internacional recente no amazonas: o caso dos Hispano-americanos
Silva, Sidney Antnio da;
Contexto Internacional , 2011, DOI: 10.1590/S0102-85292011000100007
Abstract: immigration to amazonas state remains an open field for anthropological research, either that of a historical nature, still poorly researched, or that with a current focus, especially from neighboring countries of the amazon region. however, the great challenge posed to scholars of the subject is to overcome the theoretical framework that guided analysis based on business cycles, such as rubber. in the case of recent immigration to the amazonas state, the challenge is also to relate it to the cycle of economic development made possible by the creation of the manaus free trade zone, in 1967. this factor alone could explain the presence of new immigrants, among them, hispanics. this article, which intends to discuss the rationale and the specifics of this presence, is immerse in the concern to focus immigration in the amazon, not only as a demographic and economic phenomenon, but mainly as a social two-way process, that is, it affects both societies, that of origin and that receiving, in their social and cultural dimensions, gender relations and identity processes.
Minera??o e áreas de preserva??o permanentes (APPs) em Santo Ant?nio de Pádua - RJ
Silva, Antnio Soares da;
Sociedade & Natureza , 2011, DOI: 10.1590/S1982-45132011000200002
Abstract: santo antonio de padua municipality has quarry as one of the main economic activities. however, the mining of minerals promotes a series of environmental impacts, besides the fact that some mining companies are located in environmental protected areas (app). this article aims to map, in santo antonio de padua municipality the apps and also to identify the mining companies that operate there. in order to map the apps we have used arcgisr of esri, aerial photographs at 1:10,000 scale and ibge cartographic basis, at 1:50,000 scale. to define the apps we have used the concepts of resolutions 302 and 303, both from 2002, of conama. the apps from the top of the hills, crests, slopes over 45o slope angle, springs and river banks were mapped. the apps represent an area of 212.28 km2, that corresponds to 34.78% of the municipality area. thirty one quarry entreprises were found operating in apps. the quarry carachteristics located on the top of the main crests, make this environment more favourable to the mineral explotation. the location of these quarry sites close to rivers and, consequently, in apps is due to the great utilization of water for cutting the stones. finally we suggest a revision on the apps width of 30 meters, because in mountainous areas, an area larger than what is needed, is protected. furthermore, there is the need to stablish quarry rules that do not cause a big environmental impact mainly on sprig apps.
Antnio Lopes da Silva
Pesquisa Agropecuária Tropical , 2007, DOI: 10.5216/pat.v3i1.2032
Abstract: Foi realizado no Centro de Energia Nuclear na Agricultura (CENA) da Escola Superior de Agricultura "Luiz de Queiroz" - USP - S o Paulo, um experimento visando a controlar a broca do café Hypothenemus hampei Ferr., 1867 em café despolpado, através da radia o gama de uma fonte de Cobalto 60. Pelos resultados obtidos, constatou-se que as doses letais para adultos, fora e dentro dos gr os, foram 475 e 525 krad respectivamente, constatando-se também que houve absor o de radia es pelos gr os. Para larvas, a dose letal foi de 350 krad e para pupas de 400 krad. Nos insetos tratados com 15 krad houve maior sobrevivência de todas as fases de desenvolvimento; as larvas resistiram por um período de 21 dias; as pupas por 15 e os adultos foram mais resistentes, sobrevivendo por um período de 60 dias. Todavia, n o foi constatada descendência, concluindo-se portanto que a dose esterilizante é menor que 15 krad. Com base nos resultados obtidos, conclui-se ainda, que a melhor faixa de tratamento encontra-se entre 25 e 50 krad uma vez que houve controle total de adultos em 36 dias; de pupas em 9 dias e de larvas em 6 dias, constatando-se outrossim que as fases prejudiciais, ou seja, larvas e adultos, a partir do 3° dia após os tratamentos, n o mais se alimentaram. An experiment was conducted at the “CENTRO DE ENERGIA NUCLEAR NA AGRICULTURA” of the Escola Superior de Agricultura “Luiz de Queiroz” — USP — Piracicaba, S o Paulo, Brazil, to study the control of the coffee berry borer Hypothenemus hampei Ferr., 1867, using gamma irradiation from a source of Cobalt 60. The lethal dosage necessary for the adults outside and inside the grains were 475 an 525 krad, respectively. It was also evident that there was absorption of radiation by the grains. For larve the lethal dose was 350 krad and for pupas 400 krad. A mixed group of the coffee berry borer were treated with 15 krad. The larve lived for 21 days; the pupas l5 days however the adults were the most resistant living for 60 days after treatment. Up to now we have not made efforts to observe the progeny, however sterile dosage is greater than 15 krad. According to the results obtained it is concluded that the best range of treatment for the coffee berry borer is between 25 and 50 krad. Using that range adults were controlled in 36 days. The phases which do the most damage, larval and adult, stopped eating 3 days after treatment.
Antnio Lopes da Silva
Pesquisa Agropecuária Tropical , 2007, DOI: 10.5216/pat.v7i1.2289
Abstract: In this work a survey of some of the insect pests which attack the soybean crop in Goiania, County State Goiás, Brazil, was made to verify the populational fluctuations of the following species: Anticarsia gemmatilis Hueb., 1818; Plusia nu Guen., 1852; Elasmopalpus lignosellus Zeller, 1848; Spodoptera frugiperda Srnith, 1797; Diabrotica speciosa Germ., 1824; Epicauta spp.; Mocis latipes Guen., 1852; Nezara viridula L., 1758. The insects were collected through the use of light traps, of the “Luiz de Queiroz” type, rnodified, with ultraviolet fluorescent lamp bulbs, and use of traps “Malaise” type, by sunlight insect intrabits from 1975 to 1977. The results indicated that Anticarsia gemmatilis and Elasmopalpus lignosellus appeared during the entire year with acme populationals in order; in March and April, Plusia nu appeared from February to June of each year. Spodoptera frugiperda showed acme populational from November to January and Mocis latipes with maximum population in November and February. Diabrotica speciosa and Epicauta spp. both occurred during the soybean crop cycle respectively, with populations peaks from November to March. Nezara viridula which occurred from January to June with larger population from April to May. This information will indicate the best time for control of these insect pests under the condition of this study. No presente trabalho, procurou-se por meio de armadilhas luminosas modelo "Luiz de Queiroz" providas de lampadas fluorescentes ultravioleta e armadilhas de intercapta o modelo "Malaise", realizar um levantamento de insetos para estudar a flutua o populacional das principais pragas que ocorrem na cultura da soja no município de Goiania - GO, durante três anos consecutivos (de novembro de 1975 a novembro de 1977). Pelos resultados obtidos, destacaram-se como pragas mais importantes da cultura; Anticarsia gemmatilis, Mocis latipes, Epicauta spp. Diabrotica speciosa e Plusia nu. Elasmopalpus lignosellus e Spodoptera frugiperda, apesar da sua ocorrência elevada, n o constituíram problemas porque os picos populacionais n o apareceram no período crítico da cultura. Nezara viridula n o apresentou popula o a nível de dano econ mico. Estes resultados, permitem determinar os períodos mais adequados para o controle racional das referidas pragas e ainda uma previs o do início de infesta o da cultura pelas mesmas.
Antnio Lopes da Silva
Pesquisa Agropecuária Tropical , 2007, DOI: 10.5216/pat.v1i1.1655
Abstract: An experiment to test chemical control of the mite Tetranychus urticae (Koch 1836) Bordeaux & Dosse 1963, was carried out tomato plants, at the college of Agronomy and Veterinary Medicine of the University of Goiás. The following insecticides were tested: Diazinon E-60 (Thiophosphate-0-0-diethyl- -2-isopropyl-4-methyl-pirimidyl) at 0.06%; Folidol 60 (Thiophosphate-0-0-dimethyl-0-p-nitrophenil) at 0.06%; Kurnulus (80% coloidal sulfur) at 0.03%; Metasystox-i (Thiophosphate-0-0-dimethyl-0-3-methylmercapto-ethyl) at 0.025%; Lebaycid-50 (Thiophosphate-0-0-dimethyl-S-ethyl- ercaptoethyl) at 0.065% and granulated Disyston at 2.5% (Dithiophosphate-0-0-Diethyl-S-2 (Thioethyl) - ethyl) at 2.5 g/plant. Disyston, Metasystox-i, Lebaycid and Folidol-60, were statistically superior to the others in controlling the mite. The highest percentage of control was reachead by Disyston. Next in order came Metasystox-i, Lebaycid-50, and Folidol-60. Diazinon-E-60 and sulfur cannot be recommended for controlling Tetranychus urticae. KEY-WORDS: Lycopersicon esculentum; acaricide. Realizou-se na Escola de Agronomia e Veterinária - Universidade Federal de Goiás, um ensaio de combate químico ao ácaro rajado Tetranychus urticae (Koch 1836) Bordeaux & Dosse 1963, sobre tomateiro. Os tratamentos realizados foram os seguintes: Diazinon-E-60 a 0,060% Folidol-60 a 0,060%, Kumulus (com 80% de enxofre coloidal) a 0,30%, Metasystox “i” a 0,025%, Lebaycid-50 a 0,065% e Disyston 2,5% a 2,5g/pé. A análise estatística indicou que, dos produtos testados, Disyston, Metasystox, Lebaycid e Folidol foram os mais eficientes contra o ácaro rajado em tomateiro. A análise percentual mostrou que o Disyston superou todos os outros (Quadro IV), vindo em ordem decrescente o Metasystox, Lebaycid e Folidol. Os demais inseticidas e acaricidas foram ineficientes no controle da praga em quest o. PALAVRAS-CHAVE: Lycopersicon esculentum; acaricida.
Antnio Lopes da Silva
Pesquisa Agropecuária Tropical , 2007, DOI: 10.5216/pat.v2i1.1936
Abstract: A isca Mirex, já bastante conhecida do agricultor goiano, usada para o controle à formiga cortadeira, foi comparada num primeiro teste com as iscas Dinatox, Agroceres, Tatuzinho, Lantox e Esso, e no segundo, com Colonial, Nitrosin extra, Piragy, E.A.V-041-A, e Blitz super, também empregadas para controle da referida praga. Pelas análises, observou-se que Mirex foi significantemente mais atrativa do que Lantox, Piragy e Colonial, n o diferindo das outras. A isca E.A.V—041—A foi superior à Colonial e Piragy. With the objective of studying the attractiveness of eleven different commercial insecticides, in form of bait, to the sauva ants Atta sexdens rubropilosa Forel 1908, two experiments were carried on in the school of Agronomy and Veterinary Medicine, in the state of Goiás, Brazil. The bait Mirex was compared in the first test with Dinatox-A, Agroceres, Tatuzinho, Lantox and Esso. In the second test, Mirex was compared with Colonial, Nitrosin, Piragy, E.A.V.—041—A and Blitz super. In the analyses, Mirex was significantly superior to Lantox, Piragy and Colonial. E.A.V.—041—A was significantly superior to Colonial and Piragy.
VII Colóquio sobre Quest es Curriculares
António Carvalho da Silva
Revista Portuguesa de Educa??o , 2006,
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