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Search Results: 1 - 10 of 52406 matches for " Antonio Luiz;Heinz "
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Sele??o de progênies de meio-irm?os de milho para eficiência no uso de nitrogênio
Heinz, Rafael;Mota, Leandro Henrique de Sousa;Gon?alves, Manoel Carlos;Viegas Neto, Antonio Luiz;Carlesso, André;
Revista Ciência Agron?mica , 2012, DOI: 10.1590/S1806-66902012000400015
Abstract: the study aimed to estimate the parameters and the genetic gain in selection of half-sib for nitrogen use efficiency, through simultaneous selection of characters. two experiments were established, differentiated by nitrogen fertilization, one with proper fertilization (high n) and another in stress conditions (low n). the experiment was using a 10x10 lattice with two replications. in the tests we used 84 different half-sib and 16 witnesses. from the mean squares of analysis of variance in each environment were the estimates of genetic parameters. after the analysis were selected in each environment 17 different half-brothers, through the classical index selection, and verified the repeatability of the progeny in both environments. observed variability among progenies, determining the potential for population screening for nitrogen use efficiency. the parameter estimates and genetic gains were higher in high n the use of selection index promoted estimates of selection gain of 24.43 and 21.05% for high and low n, respectively, for grain yield. the progenies showed average yield of 13.45 and 19.47% higher than control in high and low n, respectively.
Decomposi??o e libera??o de nutrientes de resíduos culturais de crambe e nabo forrageiro
Heinz, Rafael;Garbiate, Marcos Vinicios;Viegas Neto, Antonio Luiz;Mota, Leandro Henrique de Sousa;Correia, Allan Michel Pereira;Vitorino, Antonio Carlos Tadeu;
Ciência Rural , 2011, DOI: 10.1590/S0103-84782011000900010
Abstract: this study aimed to evaluate the decomposition and nutrient release from crop residues of fodder radish and crambe in the implementation of no-tillage system. the experiment was conducted in a distroferric red latossol with 762g kg-1 of clay. the experimental design was randomized blocks with four replications. the treatments were applied in split plots, considering the species of cover crops (radish and crambe) as the main plots and harvest dates of decomposition bags (0, 15, 30, 45, 60, 75 days after management) as subplots. the cover crops were treated 60 days after management, in full bloom. radish presented a dry mass production of 5586kg ha-1 and crambe of 2688kg ha-1. the kinetics of residue decomposition had a behavior similar to the dynamics of nutrient release, with an initial rapid phase followed by a slower one. the k, p and mg are released more quickly for subsequent crops. the increased speed of nutrients release by crops occurred around 15 days after the biomass management.
Milho pipoca consorciado com feij?o em diferentes arranjos de plantas
Viegas Neto, Antonio Luiz;Heinz, Rafael;Gon?alves, Manoel Carlos;Correia, Allan Michel Pereira;Mota, Leandro Henrique de Souza;Araújo, Willian Dias;
Pesquisa Agropecuária Tropical , 2012, DOI: 10.1590/S1983-40632012000100004
Abstract: the intercropping of popcorn and bean is an alternative for small farmers, by providing higher profits and a better use of the crop area, besides reducing loss risks. this study aimed to evaluate different popcorn and bean intercropping systems. the experiment was carried out in an experimental field owned by the universidade federal da grande dourados, in dourados, mato grosso do sul state, brazil. the experimental design was randomized blocks, with four replications, with treatments arranged in a split-plot scheme, with plots consisting of two popcorn cultivars (zélia and brs angela) and subplots consisting of three intercropping systems with popcorn and the brs mg pioneiro bean (popcorn + bean in the popcorn row, popcorn + bean between the popcorn rows, and corn + bean in the popcorn row + bean between the popcorn rows), and popcorn under monocropping system. the intercropping systems evaluated did not affect the popcorn yield, and bean sown in the popcorn row + between the popcorn rows resulted in a higher yield. in general, the intercropping between the two species decreased bean yield, however, due to the equivalent area index values, it was 50% to 91% more efficient than the monocropping systems.
As febres paulistas na Sociedade de Medicina e Cirurgia de S?o Paulo: uma controvérsia entre porta-vozes de diferentes saberes
Teixeira, Luiz Antonio;
História, Ciências, Saúde-Manguinhos , 2004, DOI: 10.1590/S0104-59702004000400003
Abstract: at the close of the nineteenth century, s?o paulo physicians were debating a disease they classified as "febres paulistas" (s?o paulo fevers). the article presents a brief overview of the role of fevers within brazilian nosology at that time and describes how science then explained febres paulistas, malaria, and typhoid fever. changes in the medical field meant febres paulistas were no longer classified as forms of malaria but instead considered cases of typhoid fever. following the society's debates surrounding this shift, the article analyzes the scientific lines that tended to identify febres paulistas with malaria or typhoid fever and also the line that believed these fevers were an independent nosological entity.
Alastrim, varíola é?
Teixeira, Luiz Antonio;
História, Ciências, Saúde-Manguinhos , 2000, DOI: 10.1590/S0104-59702000000200003
Abstract: between 1910 and 1913, two renowned physicians in the city of s?o paulo found themselves engaged in a scientific controversy regarding the classification of a disease then assailing the state. antonio carini, director of the instituto pasteur de s?o paulo, believed the illness to be small pox, while emílio ribas, director of the servi?o sanitário, claimed it was allastrim, or milk pox. the controversy started in the sociedade de medicina e cirurgia but later migrated to other forums and came to incorporate other figures as well. this presentation and discussion of the polemic is meant as a contribution to our understanding of the process by which a scientific consensus is constructed and solidified within the field of the biomedical sciences.
O controle do cancer no Brasil na primeira metade do século XX
Teixeira, Luiz Antonio;
História, Ciências, Saúde-Manguinhos , 2010, DOI: 10.1590/S0104-59702010000500002
Abstract: the article discusses public efforts to control cancer in brazil from the 1920s to the close of the 1940s. it examines the process which brought about creation of the inspectorship to combat leprosy, venereal diseases, and cancer within the national department of public health. creation of the inspectorship was the first public action to target cancer and, while it was not far-reaching, its emergence enables us to understand the professional field of cancer at that time. the text also points to the role played by the diffusion of electrosurgery in expanding medical interest about cancer and in the founding of the cancerology center in the federal district. it discusses the establishment and first decade of activities of the national cancer service, endeavoring to link the service's initial profile with the issues that guided its history.
Da ra?a à doen?a em Casa-grande e senzala
Teixeira, Luiz Antonio;
História, Ciências, Saúde-Manguinhos , 1997, DOI: 10.1590/S0104-59701997000200003
Abstract: the article analyzes how gilberto freyre addresses health-related issues in his book master and slave. the first point of focus is how the sanitation movement that emerged in the sert?o region in the late 1910s influenced freyre's essay. the article next endeavors to understand the relation between freyre's emphasis on the problem of syphilis in brazil and the issues of race and miscegenation, both of which are constants in his works. lastly, the article endeavors to situate freyre's ideas within the ideological framework of eugenics that was in fashion in brazil at the time his works were written.
Cibercultura e literatura: hipertexto e as novas arquiteturas textuais
Diniz, Luiz Antonio Garcia;
Alea : Estudos Neolatinos , 2005, DOI: 10.1590/S1517-106X2005000200003
Abstract: the object of this study is to analyse the implications of the new technologies in the perceivable (reader) and technical (author) forms of textual production. cyberculture, the result of the trivialisation of personal computers and of the new relationships created by virtual communities in an environment characterised by interactivity, has imposed a new paradigm. our focus is the relationships established between literature, cyberculture and the cybercity by the newly emerging textual forms. what is the role of the book in cyberspace and in immersive environments? how would temporality be defined in the contemporary text, characterized by a growing fractality? if hypertext is characterised as something opposed to linear text, how may we define hypertext in relation to printed text, a product characterised by the notion of the author and individuality?
Estudo pomológico comparativo das cultivares de cucurbita
Rochelle, Luiz Antonio;
Anais da Escola Superior de Agricultura Luiz de Queiroz , 1976, DOI: 10.1590/S0071-12761976000100012
Abstract: this paper deals with characterization of fruits of 13 cultivars belonging to 3 species: cucurbita moschata duchesne, cucurbita maxima duchesne and cucurbita pepo linneu. it was used seeds from controlled pollination. it was considered following characteristics of fruits : epicarp, shape, weight, resistance of the bark, dimensions and thickness of pulp; for seeds were considered: number, dimensions and weight.
Contribui??o ao conhecimento do Cruá (Sicana odorifera Naud.)
Rochelle, Luiz Antonio;
Anais da Escola Superior de Agricultura Luiz de Queiroz , 1986, DOI: 10.1590/S0071-12761986000200004
Abstract: the experiment was done in order to increase the knowledge of cruá (sicana odorifera naud.) of the appreciable quality, as well to evaluate some aspects related to morphology in the initial growth. the seeds utilized in the experiment were obtained in perfect conditions and some in greenhouse of didactic vegetagle garden, botany department esalq. the seeds were arranged in two positions at sowing: horizontal and vertical. substratum utilized was mixture of forest soiland river sand. it was verified that positions of seeds do not affected germination, but to morphological characters there was significative differences. to length of future principal root (cr), length of petiole (cp) it was detected significance at 5% level, also for distance between cotyledonous leaves to insertion of definitive first leaf (dfcifd), length of limb (cl) and breadth of limb (ll) were detected significances at 1% level. these significances refered to seeds in the horizontal position. the distance between collum to insertion of cotyledonous leaves (dcifc) was not significative.
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