Submitted by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-01-23T14:01:55Z No. of bitstreams: 5 3.pdf: 1034963 bytes, checksum: 27452f3d2f5ab39ea04dc92852370608 (MD5) license_url: 52 bytes, checksum: 3d480ae6c91e310daba2020f8787d6f9 (MD5) license_text: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-02-10T13:05:43Z (GMT) No. of bitstreams: 5 3.pdf: 1034963 bytes, checksum: 27452f3d2f5ab39ea04dc92852370608 (MD5) license_url: 52 bytes, checksum: 3d480ae6c91e310daba2020f8787d6f9 (MD5) license_text: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) / Made available in DSpace on 2015-02-10T13:05:43Z (GMT). No. of bitstreams: 5 3.pdf: 1034963 bytes, checksum: 27452f3d2f5ab39ea04dc92852370608 (MD5) license_url: 52 bytes, checksum: 3d480ae6c91e310daba2020f8787d6f9 (MD5) license_text: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) Previous issue date: 2012 / Funda??o de Amparo ? Pesquisa do estado de Minas Gerais (FAPEMIG) / Objetivou-se com este trabalho estudar o efeito do espa?amento de plantio e do tempo na produ??o de biomassa, na rota??o econ?mica, e em vari?veis de povoamento e dendrom?tricas de plantios clonais de eucalipto. Foi instalado um experimento em ?reas da empresa APERAM BIOENERGIA, no munic?pio de Itamarandiba - MG, utilizando o delineamento experimental, blocos ao acaso. As parcelas foram constitu?das por cinco espa?amentos iniciais de plantio (3,0 x 0,5 m; 3,0 x 1,0 m; 3,0 x 1,5 m; 3,0 x 2,0 m e 3,0 x 3,0 m) e as ?pocas de medi??o ocorreram aos 7, 12, 18, 24, 48, 61, 77, 85 e 102 meses. A partir das informa??es coletadas em campo, foram estimados para cada tratamento o volume e a biomassa por hectare, a densidade b?sica, o poder calor?fico superior, al?m de outras vari?veis dendrom?tricas e de povoamento. Verificou-se que o espa?amento e a idade influenciaram significativamente nos valores de di?metro m?dio, de altura total, de ?rea basal por hectare, de volume total por hectare, de biomassa por hectare, de densidade b?sica da madeira e de poder calor?fico superior. O crescimento em volume por hectare em biomassa por hectare e em ?rea basal por hectare apresentou rela??o direta com a densidade de plantio, sendo os maiores valores obtidos nos menores espa?amentos. Por outro lado, o di?metro m?dio e a altura total das ?rvores apresentaram correla??o negativa com a densidade de plantio. A densidade b?sica tende a aumentar com o espa?amento e com a idade das ?rvores. E o poder calor?fico tende a elevar-se com a idade e com o espa?amento de plantio. Os espa?amentos estudados n?o influenciaram a porcentagem de sobreviv?ncia das ?rvores. A rota??o t?cnica e a rota??o econ?mica ocorreram mais cedo nos plantios com espa?amento menor. Para todos os espa?amentos a idade t?cnica de corte foi inferior ? idade econ?mica de corte. O espa?amento 3,0 x 1,5 mostrou-se como a op??o mais atrativa segundo os crit?rios VPL e BPE, considerando a venda de madeira em p?. / Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Ci?ncia Florestal, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2012. / ABSTRACT The objective of this work was to study the effect of planting spacing and time in the production of biomass in the economic rotation, and dendrometric variable and stand variables of a stand of eucalyptus clonal. The experiment was performed in areas of the company APERAM BIOENERGIA in the city of Itamarandiba, MG, using a randomized block design. The plots consisted of five spacing initial (3.0 x 0.5 m, 3.0 x 1.0 m, 3.0 x 1.5 m, 3.0 and 3.0 x 2.0 x 3.0 m) and measurements were performed at 7, 12, 18, ??24, 48, 61, 77, 85 and 102 months. From the information collected in the field were estimated for each treatment the volume and biomass per hectare, density, calorific value, and other dendrometric variable and stand variables. It was found that the spacing and age influence significant on the values ??of average diameter, height total, basal area, volume total per hectare, biomass per hectare, density and calorific value. The growth in volume per hectare in the biomass per hectare and basal area per hectare was directly related to planting density, and the higher values ??for the smaller spacing. On the other hand the average diameter and total height of the trees were negatively correlated with the density. The specific gravity tends to increase with age and with the spacing of the trees. And the calorific value tends to rise with age and with the planting spacing. The spacing did not influence the survival rate of trees. The technique rotation and economic rotation occurred earlier in smaller plantings spaced. For all spacing the technique age cutting was higher than the economic age cutting. The spacing of 3.0 x 1.5 proved to be a more attractive option according to the criteria net present value and equivalent periodic benefit, considering the sale of standing timber.

Submitted by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-01-23T14:01:55Z No. of bitstreams: 5 4.pdf: 1336645 bytes, checksum: b9aa2a5ec89cf8811ce03ef7c1bff0f0 (MD5) license_url: 52 bytes, checksum: 3d480ae6c91e310daba2020f8787d6f9 (MD5) license_text: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-02-10T13:07:11Z (GMT) No. of bitstreams: 5 4.pdf: 1336645 bytes, checksum: b9aa2a5ec89cf8811ce03ef7c1bff0f0 (MD5) license_url: 52 bytes, checksum: 3d480ae6c91e310daba2020f8787d6f9 (MD5) license_text: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) / Made available in DSpace on 2015-02-10T13:07:11Z (GMT). No. of bitstreams: 5 4.pdf: 1336645 bytes, checksum: b9aa2a5ec89cf8811ce03ef7c1bff0f0 (MD5) license_url: 52 bytes, checksum: 3d480ae6c91e310daba2020f8787d6f9 (MD5) license_text: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) Previous issue date: 2012 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES) / Este trabalho teve como objetivo conhecer a estrutura e a composi??o flor?stica de um remanescente de Floresta Estacional Semidecidual, al?m de determinar o volume de povoamento por meio da aplica??o de modelos de regress?o e utiliza??o de redes neurais artificiais. O remanescente possui aproximadamente 162 hectares e est? localizado na Fazenda Experimental do Moura em Curvelo, MG, no qual foram alocadas sistematicamente 25 unidades amostrais de 400 m? (10 X 40 m), e todos os indiv?duos vivos do compartimento arb?reo-arbustivo que possu?am fuste com DAP ? 5 cm tiveram registrados os valores dos DAPs, altura total e de fuste, e atributos categ?ricos referentes ? sanidade e tortuosidade dos fustes. Foram amostrados 1105 indiv?duos distribu?dos em 114 esp?cies, 41 fam?lias e 91 g?neros. Os valores encontrados para o ?ndice de diversidade de Shannon Weaver e equabilidade de Pielou foram de 3,91 e 0,82 respectivamente. Pela an?lise volum?trica, verificou-se que modelos que utilizam a ?rea basal e altura m?dia como vari?veis independentes apresentam estimativas aproximadas para quantificar o volume de povoamento, sendo indicados para esta finalidade. Do mesmo modo, a metodologia de redes neurais artificiais tamb?m se mostrou eficiente na quantifica??o do volume de florestas nativas nas condi??es deste estudo, pelo teste e n?vel de signific?ncia adotados. A associa??o de vari?veis categ?ricas ?s cont?nuas nas camadas de entrada das redes neurais geradas, n?o resultou em estimativas mais precisas pelas condi??es assumidas neste trabalho. / Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Ci?ncia Florestal, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2012. / ABSTRACT This study aimed to know the structure and floristic composition of woody compartment of a remnant of semideciduous forest, as well as determine the stand volume by applying regression models and use of artificial neural networks. The remnant has approximately 162 hectares and is located on the Experimental Moura?s Farm in Curvelo, MG, which were systematically allocated 25 plots of 400 m? (10 X 40 m), and all the individuals of the woody compartment who had bole with a DBH ? 5 cm were recorded values?? of DBHs, total height and bole, and categorical attributes related to the sanity and tortuosity of the boles. Were sampled 1105 individuals in 114 species, 41 families and 91 genera. The values? ?found for the index of Shannon Weaver diversity and evenness were 3.91 and 0.82 respectively. By volume analysis, it was found that models that use basal area and the average height as independent variables have rough estimates to quantify the stand volume, being indicated for this purpose. Similarly, the methodology of artificial neural networks also proved to be efficient in quantifying the volume of native forests in the conditions of this study, by the test and significance level adopted. The association of categorical variables to continuous in the input layers of neural networks generated, did not result in more accurate estimates by the conditions assumed in this work.

Submitted by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-01-23T14:01:55Z No. of bitstreams: 5 6.pdf: 739017 bytes, checksum: e138b821402f0e1be4f8d8ea9955fe76 (MD5) license_url: 52 bytes, checksum: 3d480ae6c91e310daba2020f8787d6f9 (MD5) license_text: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-02-10T13:09:42Z (GMT) No. of bitstreams: 5 6.pdf: 739017 bytes, checksum: e138b821402f0e1be4f8d8ea9955fe76 (MD5) license_url: 52 bytes, checksum: 3d480ae6c91e310daba2020f8787d6f9 (MD5) license_text: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) / Made available in DSpace on 2015-02-10T13:09:42Z (GMT). No. of bitstreams: 5 6.pdf: 739017 bytes, checksum: e138b821402f0e1be4f8d8ea9955fe76 (MD5) license_url: 52 bytes, checksum: 3d480ae6c91e310daba2020f8787d6f9 (MD5) license_text: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) Previous issue date: 2012 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES) / Funda??o de Amparo ? Pesquisa do estado de Minas Gerais (FAPEMIG) / Objetivou-se com esse trabalho avaliar o impacto do uso de herbicidas na regenera??o e no banco de sementes em ?reas em processo de recupera??o. Para isso, foram desenvolvidos quatro experimentos sendo tr?s em ambiente de campo e um em ambiente protegido. No primeiro experimento, avaliou-se a infesta??o de gram?neas ex?ticas sobre o processo de regenera??o natural. No segundo, avaliou-se a influ?ncia do banco de sementes no processo de restaura??o de ?reas infestadas com plantas daninhas gram?neas. No terceiro trabalho, foi avaliada a sensibilidade de algumas esp?cies arb?reas nativas ? a??o do herbicida glyphosate e no quarto e ?ltimo experimento foi avaliado o efeito desse herbicida e do paraquat no controle das gram?neas invasoras em ?reas degradadas, comparado ? ro?ada, visando ? adequa??o de m?todos mais eficientes no controle de plantas daninhas. A partir de uma cobertura de plantas daninhas acima de 50% h? retrocesso no processo de regenera??o natural, por?m, h? um grupo de plantas capaz de colonizar tal ?rea. Verificou-se tamb?m que o banco sementes ? composto basicamente por esp?cies herb?ceas com car?ter invasor, n?o contendo sementes de esp?cies arbustivo-arb?reas, logo, n?o ? recomendada a recupera??o dessas ?reas utilizando o banco de sementes local. No ensaio com doses do glyphosate, concluiu-se que tr?s das quatro esp?cies florestais avaliadas possuem caracter?sticas que indicam toler?ncia ao herbicida testado, por?m, recomenda-se a realiza??o de testes em campo em est?dios alternativos de desenvolvimento. Na compara??o de m?todos de controle das gram?neas, embora n?o observadas diferen?as entre os herbicidas aplicados, parcelas tratadas com glyphosate apresentaram emerg?ncia de esp?cies presentes no banco ed?fico ao passo que nas parcelas tratadas com paraquat somente foram observadas brota??es. De modo geral, pr?ticas no controle qu?mico das plantas daninhas gram?neas devem ser adotadas para que a ?rea atinja a plena restaura??o. Recomenda-se a inclus?o de outras t?cnicas de recupera??o para que haja a entrada de esp?cies arb?reas adaptadas ao local. / Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Ci?ncia Florestal, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2012. / ABSTRACT The objective of this study was to evaluate the impact of herbicide use in regeneration and in the seed bank in areas where the recovery process.?Thus, we developed three of four experiments in a field environment and in a protected environment.?In the first experiment, we evaluated the infestation of exotic grasses on the natural regeneration process.?In the second, we evaluated the influence of the seed bank in the process of restoration of areas infested with grassy weeds.?In the third study, we evaluated the sensitivity of some tree species native to the action of the herbicide glyphosate and the fourth and final experiment evaluated the effect of the herbicide paraquat and control of invasive grasses in degraded areas, compared to mowing, aiming at adapting the?most efficient methods to control weeds.?We could see that from a weed coverage above 50% for the reverse process of natural regeneration, however, there is a group of plants able to colonize this area.?It was also found that the seed bank is composed primarily of herbaceous species with character attacker, not containing seeds of woody species, so is not recommended for rehabilitation of these areas using the local seed bank.?In the trial in doses of glyphosate, it was concluded that three of four forest species evaluated possess characteristics that indicate tolerance to the herbicide tested, however, recommends-if achievement of field tests in stadiums alternative development.?In the comparison of methods for control of grasses, although no significant differences between the herbicides, glyphosate treated plots showed emergence of edaphic species present in the bank while in plots treated with paraquat only shoots were observed.?Overall, practices in the chemical control of grass weeds should be taken to the area to reach the full restoration.?It is recommended the inclusion of other recovery techniques so that there the entry of tree species locally adapted.

Submitted by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-01-23T14:01:55Z No. of bitstreams: 5 7.pdf: 11015132 bytes, checksum: 0a2a0824ce976c86d274a0563f3f447c (MD5) license_url: 52 bytes, checksum: 3d480ae6c91e310daba2020f8787d6f9 (MD5) license_text: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-02-10T13:11:09Z (GMT) No. of bitstreams: 5 7.pdf: 11015132 bytes, checksum: 0a2a0824ce976c86d274a0563f3f447c (MD5) license_url: 52 bytes, checksum: 3d480ae6c91e310daba2020f8787d6f9 (MD5) license_text: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) / Made available in DSpace on 2015-02-10T13:11:09Z (GMT). No. of bitstreams: 5 7.pdf: 11015132 bytes, checksum: 0a2a0824ce976c86d274a0563f3f447c (MD5) license_url: 52 bytes, checksum: 3d480ae6c91e310daba2020f8787d6f9 (MD5) license_text: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) Previous issue date: 2012 / Conselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico (CNPq) / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES) / Funda??o de Amparo ? Pesquisa do estado de Minas Gerais (FAPEMIG) / O objetivo deste trabalho foi avaliar a influ?ncia de ambientes, substratos, prog?nies e proced?ncias na emerg?ncia e crescimento de pl?ntulas de pequi. O experimento foi conduzido nos ambientes casa de vegeta??o, casa de sombra e c?u aberto, onde foram avaliadas diferentes matrizes dentro dos substratos S1(terra de subsolo de textura m?dia), S2(70% de vermiculita e 30% de moinha de carv?o) e S3 (30% de moinha de carv?o, 50 % de vermiculita e 20% de areia). Os dados de germina??o foram analisados pelo teste de qui-quadrado para independ?ncia, enquanto as vari?veis de di?metro e altura de pl?ntulas pela an?lise de vari?ncia. Os resultados foram significativos (p<1%) para prog?nies, substratos e ambientes em rela??o ? taxa de emerg?ncia. O substrato S1 e o ambiente c?u aberto obtiveram os maiores percentuais de emerg?ncia de pl?ntulas (7,54% e 7,59%), j? o substrato S1 dentro da casa de sombra foi a intera??o que proporcionou o melhor resultado (12,61%). A emerg?ncia se correlacionou positivamente com a densidade e temperatura dos substratos e negativamente com sua capacidade de reten??o de ?gua, al?m de ser inversamente proporcional ? press?o de vapor d??gua do ambiente. O substrato S3 e a casa de vegeta??o contribu?ram isoladamente para as maiores m?dias de di?metro do coleto e altura de pl?ntulas, sendo sua intera??o significativamente superior ?s demais combina??es de substratos e ambientes para a vari?vel altura. / Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Ci?ncia Florestal, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2012. / ABSTRACT The objective of this study was to evaluate the influence of environments, substrates, progenies and provenances in the emergence and seedling growth of pequi. The experiment was conducted in a greenhouse environment, the shade and open air, where they were evaluated in different matrices of the substrates S1 (subsoil texture average), S2 (70% vermiculite and 30% charcoal powder) and S3 (30% of charcoal powder, vermiculite 50% and 20% sand). The germination data were analyzed by chi-square test for independence, while the variables of diameter and height of seedlings by analysis of variance. The results were significant (p <1%) for progeny, substrates and environments in relation to the rate of emergence. The substrate S1 open and the environment had the highest percentage of seedling emergence (7.54% and 7.59%), since the substrate S1 within the shade was the interaction that yielded better results (12.61%) . The emergence of positively correlated to the density and temperature of the substrate and negatively with their ability to retain water, and is inversely proportional to the pressure of water vapor from the environment. The substrate S3 and greenhouse alone contributed to the higher average stem diameter and height of seedlings, and their interaction significantly superior to other combinations of substrates and environments for the variable height.

Submitted by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-01-23T14:01:55Z No. of bitstreams: 5 8.pdf: 931948 bytes, checksum: c8af449a7e2af0f985773f75175b5354 (MD5) license_url: 52 bytes, checksum: 3d480ae6c91e310daba2020f8787d6f9 (MD5) license_text: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-02-10T13:12:26Z (GMT) No. of bitstreams: 5 8.pdf: 931948 bytes, checksum: c8af449a7e2af0f985773f75175b5354 (MD5) license_url: 52 bytes, checksum: 3d480ae6c91e310daba2020f8787d6f9 (MD5) license_text: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) / Made available in DSpace on 2015-02-10T13:12:26Z (GMT). No. of bitstreams: 5 8.pdf: 931948 bytes, checksum: c8af449a7e2af0f985773f75175b5354 (MD5) license_url: 52 bytes, checksum: 3d480ae6c91e310daba2020f8787d6f9 (MD5) license_text: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) Previous issue date: 2012 / Conselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico (CNPq) / O presente trabalho teve como objetivo avaliar as estimativas de produ??o de biomassa, conte?do de nutrientes total na parte a?rea e do tronco das ?rvores, em resposta a diferentes intensidades de desbaste e a fertiliza??o p?s-desbaste em um povoamento de clones de eucalipto. Foi instalado um experimento em povoamento clonal de eucalipto na empresa ArcellorMittal BioFlorestas, em Martinho Campos, MG. O experimento constituiu-se em um delineamento em blocos casualizados, com dois blocos, quatro intensidades de desbaste (0, 20, 35 e 50%), com e sem fertiliza??o p?s-desbaste. A idade t?cnica de desbaste foi determinada pelo m?todo dos ingressos percentuais, sendo realizada aos 89 meses e a fertiliza??o p?s-desbaste determinada pelo m?todo de exporta??o de nutrientes aos 107 meses. A an?lise dos dados foi feita aos 36 meses ap?s o desbaste e 18 meses ap?s a fertiliza??o. Verificou-se que o m?todo dos ingressos percentuais foi adequado do ponto de vista biol?gico para estimar a idade t?cnica do primeiro desbaste. O desbaste proporcionou maior influ?ncia na produ??o florestal, em rela??o ? fertiliza??o. O desbaste influenciou significativamente o crescimento do di?metro, da ?rea basal, do volume e da biomassa por hectare. A altura total e a altura de copa n?o diferenciaram estatisticamente dentre os tratamentos de desbastes. A fertiliza??o realizada aos 18 meses p?s-desbaste n?o afetou o crescimento e a produ??o das vari?veis de povoamento analisadas. N?o houve diferen?a estat?stica da efici?ncia de uso dos nutrientes em rela??o ?s intensidades de desbaste e ? fertiliza??o p?s-desbaste. Observou-se rela??o positiva entre conte?do de nutrientes e produ??o de mat?ria seca. O ac?mulo de nutrientes para o conte?do total na parte a?rea e no tronco foi proporcional ? intensidade de desbaste, sendo que o conte?do reduziu ? medida que aumentou a intensidade de desbaste, e n?o foi afetado significativamente pela fertiliza??o p?s-desbaste. O ac?mulo de serrapilheira no solo n?o foi alterado significativamente em rela??o ?s intensidades de desbaste e ? fertiliza??o p?s-desbaste; j? o conte?do de nutrientes, apresentou diferen?a estatisticamente significativa para o efeito desbaste apenas para o c?lcio e para efeito fertiliza??o para pot?ssio, c?lcio, magn?sio e enxofre. / Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Ci?ncia Florestal, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2012. / ABSTRACT This study aimed to evaluate the estimates of biomass production and nutrient in response to different intensities of thinning and fertilization after thinning in a stand of eucalypt clones. The experiment was installed in area owned by company ArcelorMittal BioFlorestas, in Martinho Campos, MG. The experiment consisted in a randomized block design, with two blocks, four thinning intensities (0, 20, 35 and 50%), with and without fertilizer after thinning. The technique age of thinning was determined by the percentage of entries method, being performed at 89 months and fertilization after thinning determined by nutrient export to 107 months. Data analysis was performed at 36 months after thinning, and 18 months after fertilization. Thinning provided greater influence on forest production in relation to fertilization. It was found that the percentage of entries method was adequate biologically to estimate technical age of first thinning. Thinning influenced the growth in diameter, basal area, volume and biomass per hectare. The total height and crown height did not differ statistically among the thinning treatments. Fertilization performed at 18 months after thinning did not affect the growth and yield of stand variables analyzed. There was no statistical difference in the efficiency of nutrient use in relation to the intensities of thinning and fertilization after thinning. There was positive relationship between nutrient content and dry mass production. The accumulation of nutrients to the total content in the of above ground and the stem was proportional to the intensity of thinning, and reduced content increased as the intensity of thinning, and was not affected by fertilization after thinning. The accumulation of litter on the ground has not changed significantly since the intensities of thinning and fertilization after thinning, whereas the content of nutrients showed statistically significant effect thinning only for calcium and effect fertilization for potassium, calcium, magnesium and sulfur.

Submitted by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-01-23T14:01:56Z No. of bitstreams: 5 9.pdf: 841416 bytes, checksum: d2cb51c094952589e1262227a5e63e23 (MD5) license_url: 52 bytes, checksum: 3d480ae6c91e310daba2020f8787d6f9 (MD5) license_text: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-02-10T13:14:02Z (GMT) No. of bitstreams: 5 9.pdf: 841416 bytes, checksum: d2cb51c094952589e1262227a5e63e23 (MD5) license_url: 52 bytes, checksum: 3d480ae6c91e310daba2020f8787d6f9 (MD5) license_text: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) / Made available in DSpace on 2015-02-10T13:14:02Z (GMT). No. of bitstreams: 5 9.pdf: 841416 bytes, checksum: d2cb51c094952589e1262227a5e63e23 (MD5) license_url: 52 bytes, checksum: 3d480ae6c91e310daba2020f8787d6f9 (MD5) license_text: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) Previous issue date: 2012 / Conselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico (CNPq) / O decl?nio da minera??o de diamante na regi?o de Diamantina-MG e entorno, com a interrup??o das buscas e o gradativo esgotamento das minas em opera??o, est? proporcionando a descoberta e a explora??o de maci?os de quartzito, o que ocasiona a degrada??o da vegeta??o existente e do solo, criando um ambiente bastante in?spito ao crescimento de plantas. Este trabalho objetivou caracterizar o rejeito proveniente de ?reas de minera??o de quartzito no munic?pio de Diamantina-MG e entorno, por meio da avalia??o qu?mica e granulom?trica dos rejeitos, bem como avaliar o comportamento de Brachiaria brizantha, Vetiveria zizanioides, Eremanthus erythropappus, Solanum lycocarpum e Dalbergia miscolobium, sob a influ?ncia da aduba??o mineral e org?nica quando cultivada em rejeito da minera??o de quartzito, para apoiar a recupera??o dessas ?reas de explora??o. Para tanto foram montados seis experimentos: no primeiro, foram coletadas 27 amostras compostas, cuidadosamente homogeneizadas, secas ao ar e passadas em peneira de malha de 2,0mm, para posterior caracteriza??o qu?mica e granulom?trica, sendo determinado para cada vari?vel o teor m?nimo, m?ximo, m?dio e mediano; com intervalo de confian?a a 5% para m?dia e coeficiente de varia??o e um estudo da frequ?ncia de ocorr?ncia de resultados por faixa de classifica??o de interpreta??o da fertilidade do solo. Os demais experimentos foram realizados em condi??es de casa de vegeta??o, tiveram os tratamentos dispostos em delineamento inteiramente casualizado, com cinco combina??es de aduba??o org?nica (AO) e aduba??o mineral (AM) e um tratamento adicional (Controle), com quatro repeti??es. Para as forrageiras de cobertura, a dose recomendada de 100% AM (NPK) e AO (esterco de curral) corresponderam a 50kg ha-1 N, 50kg ha-1 P2O5, 40kg ha-1 K2O e 10 t ha-1 esterco bovino, por dm? de rejeito, sendo avaliados a produ??o total de mat?ria seca, os teores e os conte?dos de nutrientes na parte a?rea e nas ra?zes. Para as esp?cies nativas, a dose recomendada de 100% AM (NPK) e AO (esterco bovino) correspondeu a 150mg de N, 140mg de P, 150mg de K e 5g de esterco, por dm? de rejeito, sendo avaliadas as seguintes vari?veis: altura das mudas, di?metro do caule, massa seca da parte a?rea e de ra?zes, e teor de nutrientes na parte a?rea das mudas. As amostras de rejeito analisadas apresentaram baixos teores de mat?ria org?nica, P, K, Ca e Mg e alta acidez. Os rejeitos apresentaram granulometria que dificulta o crescimento do sistema radicular de plantas, o que indica s?rias restri??es ao estabelecimento de esp?cies vegetais. A B. brizantha cv. Marandu respondeu ? aduba??o mineral e org?nica com as doses recomendadas de 37kg N, 37kg P2O5, 30kg K2O e 2,6t esterco de curral por ha. Enquanto Vetiveria zizanioides respondeu ? aduba??o mineral com as doses correspondentes de 50kg N, 50kg P2O5 e 40kg K2O por ha. Houve resposta das mudas de Eremanthus erythropappus ? aduba??o mineral e org?nica com as doses recomendadas de 0,075g N, 0,35g P2O5 e 0,125g K2O e 2,5g esterco de curral por dm? de rejeito de quartzito. A esp?cie nativa Solanum lycocarpum tamb?m respondeu ? aplica??o da aduba??o org?nica e mineral com as doses recomendadas de 0,036g N, 0,168 g P2O5 e 0,060g K2O e 2,5g esterco de curral por dm? de rejeito de quartzito. J? Dalbergia miscolobium respondeu somente ? aduba??o mineral com as doses recomendadas de 25mg N, 25mg P2O5, 20mg K2O por dm? de rejeito. A aduba??o org?nica e mineral recomendada para aplica??o ao rejeito de quartzito para m?ximo crescimento das mudas e produ??o de mat?ria seca possibilitou obter os teores adequados de nutrientes na parte a?rea das esp?cies estudadas. / Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Ci?ncia Florestal, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2012. / ABSTRACT The decline in diamond mining in the region of Diamantina-Minas Gerais and its surroundings, with the interruption of the searches and the gradual exhaustion of the mines in operation, is providing the discovery and exploitation of massive quartzite, which causes the degradation of existing vegetation and soil,?creating an environment very inhospitable to plant growth.?This study aimed to characterize the waste from mining areas of quartzite in Diamantina-Minas Gerais and its surroundings, through the evaluation of particle size and chemical wastes, as well as to evaluate the behavior of Brachiaria brizantha, Vetiveria zizanioides, Eremanthus erythropappus, Solanum lycocarpum Dalbergia miscolobium beneath the influence of mineral and organic fertilizer when grown on tailings from mining of quartzite, to support the recovery of these areas of exploration. Therefore, it were assembled six experiments: in the first, 27 composite samples were collected, carefully homogenized, air dried and passed through sieve mesh of 2.0mm for subsequent chemical characterization and particle size was determined for each variable the minimum, maximum, mean and median, confidence interval at 5% for mean and coefficient of variation and a study of the occurrence frequency of results by range of classification for interpretation of soil fertility. Other?experiments were conducted in?greenhouse?conditions,?treatments?were arranged in?completely randomized design?with five?combinations of?organic manure (OM)?and mineral fertilization (MF) and an additional treatment (Control), with four replications. For?forage?coverage,?the recommended dose of?100% MF?(NPK) and OM (manure bovine) corresponded to 50kg ha-1 N, 50kg ha-1 P, 205,40kg K, 20 ha-1 and 10t ha-1 manure by dm??of tailings, and?evaluated?the total production of?dry matter contents?and?nutrient contents?in shoots?and roots. ?For native species, the recommended dose of 100% MF (NPK) and OM (manure) corresponded to 150 mg of N, 140mg P, 150mg K and 5g of dung per dm? of tailings, and evaluated the following variables:?seedling height, stalk diameter, dry mass of shoots and roots, and nutrient contents in shoots of seedlings.?The tailings samples presented low levels of organic matter, P, K, Ca and Mg and high acidity. The tailings particle size showed that hinder the growth of the root system of plants, which indicates serious restrictions on the establishment of plant species. B. brizantha cv. Marandu responded to mineral and organic fertilization with the recommended dose of 37kg N, 37kg P2O5, 30 kg K2O and 2.6 t farmyard manure per hectare. While Vetiveria zizanioides responded to manuring with corresponding doses of 50kg N, 50kg P2O5 and 40 kg K 2O per ha. There was response of seedlings Eremanthus erythropappus at the mineral and organic fertilization with the recommended doses of 0.075 g N, 0.35 g P2O5 and K2O 0.125 g and 2.5 g manure per dm? of tailings quartzite. The native species Solanum lycocarpum also responded to the application of organic and mineral fertilization with the recommended doses of 0.036g N, 0.16 g P 2O5 and K2O 0.060g and 2.5g manure per dm? of tailings quartzite. Have Dalbergia miscolobium responded only to the mineral fertilizer with the recommended doses of 25 mg N, P2O5 25mg, 20mg by K 2O dm? of tailings. The organic and mineral fertilization recommended for application to reject quartzite for maximum plant growth and dry matter production allowed to obtain appropriate levels of nutrients in the shoots of the species.

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Verificar keywords. on 2018-04-20T14:53:58Z (GMT) / Submitted by Raniere Barreto (raniere.barros@ufvjm.edu.br) on 2018-05-15T18:10:27Z No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) thiago_willian_silva.pdf: 867251 bytes, checksum: 63d84e459ed641be3d726014370cdf0a (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2018-05-15T19:34:00Z (GMT) No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) thiago_willian_silva.pdf: 867251 bytes, checksum: 63d84e459ed641be3d726014370cdf0a (MD5) / Made available in DSpace on 2018-05-15T19:34:00Z (GMT). No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) thiago_willian_silva.pdf: 867251 bytes, checksum: 63d84e459ed641be3d726014370cdf0a (MD5) Previous issue date: 2016 / O objetivo desta disserta??o ? analisar a educa??o superior, a ci?ncia e a tecnologia durante o per?odo militar. Utilizou-se uma pesquisa bibliogr?fica descritiva qualitativa. Os dados analisados mostram que no per?odo militar as universidades passaram por uma moderniza??o autorit?ria marcada por paradoxos e ambiguidades. A partir de 1964, o regime pol?tico adotou uma postura destrutiva e reformadora; em outros termos, a moderniza??o do ensino superior chegou escoltada por meios repressivos. O golpe de 1964 foi sustentado por um grupo de conservadores, liberais, reacion?rios, nacionalistas autorit?rios e at? reformistas moderados. Tratava-se de um movimento anticomunista que gerou expurgos capazes de afetar o campo progressista. Parte dos grupos golpistas concordava com as reformas, desde que n?o fortalecesse as lideran?as revolucion?rias. A direita aceitou o argumento reformista de que as universidades necessitavam de mudan?as, pois, ? frente destas, estavam catedr?ticos poderosos que geriam um sistema de produ??o de conhecimento fraco, cujos professores eram ap?ticos, e ainda havia insufici?ncia de vagas para os jovens. Esquerda e direita concordavam que era necess?rio modernizar e gerar mais conhecimento, por?m ambos os grupos apresentavam perspectivas diferentes. A pol?tica universit?ria idealizada pela ditadura foi se desenhando e, no come?o de 1970, resultou-se em embates entre grupos e opini?es divergentes. A reforma feita pelo regime militar procedeu sob press?es opostas de liberais, conservadores, militares, religiosos, intelectuais e professores universit?rios, somadas aos conselhos de norte-americanos, cujo cen?rio de fundo foi composto pela rebeldia estudantil. O poder autorit?rio dos l?deres da ditadura acomodou as press?es e as diferentes opini?es, de onde procederam pol?ticas contradit?rias e, por vezes, conflitantes. / Disserta??o (Mestrado Profissional) ? Programa de P?s-Gradua??o em Tecnologia, Sa?de e Sociedade, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2016. / The objective of this dissertation is to analyze the college education, science and technology during the military era. We used a qualitative descriptive bibliographic research. The data analyzed show that through the military period the universities went through an authoritarian modernization marked by paradoxes and ambiguities. From 1964, the political regime has adopted a destructive and reformer position; in other words, the modernization of higher education came escorted by means of repression. The coup of 1964 was supported by a group of conservative, liberal, reactionary and authoritarian nationalists and even by moderate reformists. It was an anti-communist movement that generated purges capable of affecting the progressive camp. Part of the groups? scammers agreed with the reforms, provided that they did not strengthen the revolutionary leaders. The Right-wing accepted the reformist argument that universities needed changes because, ahead of them, were powerful professors who ran a weak system of knowledge production, whose teachers were apathetic, and there was a lack of jobs for young people. Left-wing and right-wing agreed that it was necessary to modernize and generate more knowledge, but both groups had different perspectives. The university policy devised by the dictatorship was drawing and, at the beginning of 1970, resulted in clashes between groups and divergent views. The reform made by the military regime preceded in opposite pressures by Liberal, conservative, military, religious, intellectual and university professors, in addition to North American councils, whose background was composed by the student rebellion. The authoritarian power of the leaders of the dictatorship settled the pressures and the different views, by having contradictory, sometimes conflicting policies.

Made available in DSpace on 2014-12-17T14:20:18Z (GMT). No. of bitstreams: 1 CarlosHLF.pdf: 486691 bytes, checksum: 74e2d587183706158d165d2e4265cf07 (MD5) Previous issue date: 2006-04-12 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior / The thesis describes parallel possibilities between the knowledge built in theatre and in Science. The narrative is constructed through a reflexive observation of the process of making a threatical play, specifically O Tempo da Chuva by Grupo Beira de Teatro , in analogy to the process of making a scientific theory, specifically the one described by Werner Heisenberg in his book Physics and Beyond: encounters and conversations . It sets a dialog with authors/actors from various areas of knowledge, such as Edgar Morin, Werner Heisenberg, Ren? Descartes, Paul Feyerabend, Paul Caro, Juremir Machado da Silva, Maria da Concei??o de Almeida, Renato Ferracini, among others. It discusses the hypothesis that Science is the process of building and the theatrical process of building a play can also be systematized, likewise science. The thesis defends, as the complexities science may suggest, a method as a strategy. Developed throughout the process, such method could only be verified at the end, when the elements of the setting of atomic physics theories and theatre were correlated. Questions such as: the place of theatre and science in our contemporary society and the political and ethical role of artists and scientists are at the episthemological basis of this narrative which we have started, but it is not even close to a conclusion / A disserta??o narra poss?veis paralelos entre os saberes do teatro e da ci?ncia. A narrativa ? constru?da a partir de uma reflex?o do processo de montagem do espet?culo teatral O Tempo da Chuva do Grupo Beira de Teatro, em analogia ao processo de constru??o de uma teoria cient?fica, descrita por Werner Heisenberg em seu livro A Parte e o Todo . Tem como interlocutores autores/atores de v?rias ?reas do conhecimento, como Edgar Morin, Werner Heisenberg, Ren? Descartes, Paul Feyerabend, Paul Caro, Juremir Machado da Silva, Maria da Concei??o de Almeida, Renato Ferracini, entre outros. Discute a hip?tese de que ci?ncia ? montagem e de que uma montagem teatral tamb?m pode ser sistematizada, a exemplo da ci?ncia. A disserta??o defende, como sugerem as ci?ncias da complexidade, o m?todo como estrat?gia. Criado no processo, esse m?todo s? pode ser verificado ao final, quando os elementos de montagem das teorias da f?sica at?mica e do teatro foram interrelacionados. Questionamentos como: o lugar do teatro e da ci?ncia na sociedade sobremoderna e o papel pol?tico e ?tico dos artistas e dos cientistas est?o na base epistemol?gica desta narrativa que aqui come?amos, mas que nem de longe est? perto de uma conclus?o

Made available in DSpace on 2014-12-17T14:36:16Z (GMT). No. of bitstreams: 1 NemoneSP.pdf: 2195633 bytes, checksum: 81bf986e588585a5cb124b242453ce2b (MD5) Previous issue date: 2009-09-15 / Conselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico / This work aims to analyze the concept of "paradox" posed in the work of The Budget Paradox (1872) of mathematical and logical English Augustus De Morgan (1806-1871). Here it is important to note that a large part of this book consists of re-prints of a series of writings by the author in journal Athenaeum, where its performance as auditor of literature. The tests refer to some scientific work produced between the years 1489 and 1866 and the rules of selection for the composition of the work is, basically, the methodological aspects used in the completion or disclosed by such scholars. The concept of paradox is presented in two distinct moments. At first, we found a study of definitions for the term in a philosophical approach, characterizing it as something that requires further investigation; which was complemented with the classic examples of a scientific context. In the second, we present a concept advocated by De Morgan and, under this perspective, that he conceptualized the "paradox" is directly related to the non-usual methods employed in the formulation of new scientific theories. In this study some of these scientific concepts are detailed, where, through the redemption history, engaging in issues of our study Mathematics, Physics, of Logic, among others. Possession of the preliminary analysis and comparison with the design of De Morgan, it became possible to diagnose some limitations in the conceptualization suggested by the author. Further, evidenced, in front of the cases, the nonlinearity of the process of production of knowledge and hence the progress of science / O presente trabalho tem como objetivo fazer uma an?lise do conceito de paradoxo suscitado na obra A Budget of Paradoxes (1872) do matem?tico e l?gico ingl?s Augustus De Morgan (1806-1871). Neste aspecto ? importante salientar que uma grande parte deste livro consiste de re-impress?es de uma s?rie de escritos do autor no peri?dico cient?fico Athenaeum, quando de sua atua??o como revisor bibliogr?fico. Os ensaios se referem a alguns trabalhos cient?ficos produzidos entre os anos de 1489 e 1866 cujo crit?rio de sele??o para a composi??o da referida obra reside, basicamente, no aspecto metodol?gico adotado ou ainda na conclus?o divulgada por tais estudiosos. A conceitua??o de paradoxo ? apresentada em dois momentos distintos. No primeiro momento, promovemos um estudo das defini??es encontradas para o termo segundo um enfoque filos?fico, caracterizando-o como algo que exige investiga??o adicional; ao que foi complementado com exemplos cl?ssicos do contexto cient?fico. No segundo, apresentamos a conceitua??o defendida por De Morgan e, sob essa perspectiva, o que ele conceitua paradoxo est? diretamente relacionado ?s metodologias n?o-usuais empregadas na formula??o de novas teorias cient?ficas. Neste estudo algumas dessas concep??es cient?ficas s?o pormenorizadas, onde, atrav?s do resgate hist?rico, embrenhamos nosso estudo em quest?es da Matem?tica, da F?sica, da L?gica, entre outras. De posse da an?lise preliminar e em confronta??o com a concep??o de De Morgan, tornou-se poss?vel diagnosticar algumas limita??es na conceitua??o sugerida pelo autor. Por outro lado, evidenciamos, diante dos casos apresentados, a n?o-linearidade do processo de produ??o do conhecimento e, consequentemente, do progresso da ci?ncia

Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2015-12-14T21:49:03Z No. of bitstreams: 1 MariaEmiliaBarretoBezerra_DISSERT.pdf: 5487121 bytes, checksum: 848e075945f793f9bfdc193af4cf91df (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2015-12-17T22:11:59Z (GMT) No. of bitstreams: 1 MariaEmiliaBarretoBezerra_DISSERT.pdf: 5487121 bytes, checksum: 848e075945f793f9bfdc193af4cf91df (MD5) / Made available in DSpace on 2015-12-17T22:11:59Z (GMT). No. of bitstreams: 1 MariaEmiliaBarretoBezerra_DISSERT.pdf: 5487121 bytes, checksum: 848e075945f793f9bfdc193af4cf91df (MD5) Previous issue date: 2014-07-31 / Neste trabalho de Disserta??o prop?e-se o ensino do tema evapora??o a partir da abordagem CTS porque acreditamos que esse tipo de enfoque ? capaz de proporcionar aos alunos uma aprendizagem mais cr?tica e consciente do fazer cient?fico. Al?m disso, ? poss?vel mostrar aos alunos a import?ncia deles, como cidad?os, nas tomadas de decis?es que visem beneficiar a todos que fazem parte da comunidade a qual pertencem. Nessa perspectiva, aborda-se o tema Evapora??o numa regi?o caracterizada pela constante falta de ?gua para o consumo, o munic?pio de Santa Cruz/RN, porque, apesar da cria??o de a?udes para regularizar a vaz?o dos rios e aumentar a disponibilidade de ?gua nos per?odos de escassez, sabemos que esses reservat?rios apresentam uma grande superf?cie l?quida livre que permite elevada perda de ?gua por evapora??o. Dessa forma, a evapora??o afeta o rendimento dos reservat?rios para abastecimento e irriga??o, sendo um fen?meno de especial interesse para estudo. Para tal, foi aplicado um question?rio com o intuito de identificar as concep??es pr?vias dos alunos sobre o tema. Em seguida, foi elaborado e realizado um Workshop voltado para os alunos da Licenciatura em F?sica do Campus Santa Cruz do Instituto Federal de Educa??o, Ci?ncia e Tecnologia do Rio Grande do Norte (IFRN). A realiza??o do Workshop serviu como espa?o para a discuss?o sobre o tema dentro do contexto do munic?pio de Santa Cruz/RN. Como produto, sugerimos aos professores de F?sica um guia com recomenda??es que devem ser levadas em conta quando forem ensinar esse tema. / The scope of this Dissertation is propose the teaching of the evaporation based on the approach Science, Technology and Society (STS) because we believe that this type of approach is able to provide students with a more critical and conscious learning about science. Moreover, with this search, it?s possible to show for students the importance of role to play for them as citizens in decision making aimed to benefit all who are part of the community to which they belong. From this perspective, broached the theme evaporation in a region characterized by constant lack of water for consumption, the municipality of Santa Cruz/RN because, despite the creation of dams to regulate the flow of rivers and increase the availability of water during periods of scarcity, we know that these reservoirs have a large free liquid surface allowing high water loss by evaporation. Thus, evaporation affects the performance of reservoirs for water supply and irrigation, being a phenomenon of particular interest to study. To this end, a questionnaire in order to identify students' preconceptions on the subject was applied. Was then prepared and conducted a workshop geared toward students majoring in Physics Campus Santa Cruz, Federal Institute of Education, Science and Technology of Rio Grande do Norte (IFRN). The completion of the workshop served as a space for discussion of the topic within the context of the municipality of Santa Cruz/RN. As a product, we suggest to physics teachers a guide with recommendations to be taken into account when they teach this subject