The stay-green trait is responsible for the preservation of green coloration in the stem and leaf, during physiological maturity. It has also been shown to play an important role in the increase of grain size. The knowledge of the inheritance of this trait can constitute valuable information to plant breeders in the developing new wheat (Triticum aestivum L.) varieties. This study was conducted in two environments, during the years of 1997 and 1998, to verify the genetic basis of the stay-green trait among crosses of four different genotypes in the Simone Alves Silva is a graduate student in Plant Breeding at the Universidade Federal de Pelotas

RESUMOO trabalho teve como objetivo avaliar o comportamento do caráter "stay-green" em plantas de trigo quanto à qualidade de panificação, através da análise dos padrões eletroforéticos em condições dissociantes (SDS-PAGE), e avaliar a correlação fenotípica de Pearson entre os caracteres adaptativos, como data de florescimento e estatura de plantas, coloração ("stay-green") e escores protéicos. O experimento foi conduzido em condições de campo e laboratório nos anos de 1999 e 2000. O caráter "stay-green" expresso nos genótipos avaliados apresentou-se altamente correlacionado com escores protéicos obtidos através da análise eletroforética das subunidades de gluteninas de alto peso molecular, podendo ser sugerido como parâmetro para selecionar plantas superiores em gluteninas e consequentemente com maior qualidade de panificação.Palavras-chave: Triticum aestivum L., proteína, estatura de planta, data de florescimento. ABSTRACTThe objective of this work was evaluate stay-green trait behavior in wheat plants as bread-making quality through eletrophoretic standars of this proteins and phenotypic Pearson correlation among adaptatives caracters as head-date and plant stature, coloration (stay-green) and proteic scores. The experiment was driven in field conditions and laboratory in the years of 1999 and 2000. The trait stay-green expressed in the appraised genotypes showed high correlation with the proteic scores obtained through the eletrophoretic analysis of this subunits could be suggested as parameter to select superior plants for glutenins and consequently with larger bread-making quality.

RESUMOA implantação de cemitérios sem projetos geoambientais e hidrogeográficos em solos sem propriedades estruturais e químicas necessárias para receber este tipo de atividade resulta que elementos tóxicos e lixiviados do cemitério percolem ao nível freático. Esta percolação leva a contaminação das águas subterrâneas, afetando drasticamente os recursos naturais e a saúde pública. Desta forma, a toxicidade de solos oriundos de cemitérios de Santa Maria foi avaliada. Paralelamente, as concentrações de Al, Ca, Cd, Cr, Cu, Fe, Mg, Ni, Pb e Zn foram determinadas e comparadas com os limites de tolerância estabelecidos na Resolução 420 de 2013 do Conselho Nacional do Meio Ambiente. Oligochaetas da espécie Eisenia andrei foram empregadas como organismos bioindicadores em bioensaios, no formato ensaio-limite (controle versus tratamento), completamente casualizado, com três repetições, composto por sete tratamentos e dois níveis. Ao final do período de exposição, foram avaliados os efeitos de toxicidade aguda em oligochaetas, sendo feita a concentração letal média (CL 50 ) respectivamente e interferência no processo reprodutivo das oligochaetas. Pela análise química se detectou concentrações de metais tóxicos superiores aos valores de prevenção estabelecidos legalmente.Palavras-chave: bioindicadores, oligochatas, metais tóxicos, toxicidade. Toxicological potential of metals found in soil of cemeteries in SantaMaria -RS ABSTRACTContamination with toxic elements and cemetery leachate may result when proper geoenvironmental and hydro geographic studies are not conducted and cemeteries are dug in soils

The need to adopt measures that reduce the persistence of pollutants in the environment is notorious, in order to promote the correct disposal and treatment of effluents. This study aimed to prepare, characterize, and evaluate the photocatalytic activity of activated charcoal obtained from the residual biomass of Chlorella pyrenoidosa microalgae for Rhodamine B (RhB) dye degradation. The samples were characterized by X-ray diffraction, Fourier-transform infrared spectroscopy, N2 porosimetry, and zeta potential. To evaluate the photocatalytic activity, experiments were carried out in a stirred batch reactor. The activated charcoal prepared from microalgae biomass showed the better photocatalytic activity in the degradation of the RhB dye of 75.5% under ultraviolet radiation (k=0.0121 min-1), and 66.5% under visible radiation (k=0.0091 min-1), while the commercial ZnO achieved 92.5% (k=0.0158 min-1) and 16.6% (k=0.0032 min-1) for ultraviolet and visible radiation, respectively. Moreover, the activation/carbonization process used for the preparation of activated charcoal from microalgae biomass promoted changes in the structural, textural, and catalytic properties of the prepared samples.

best DEX removal (53.02%), about the others' concentration (2.0 and 7.5 g L −1 ). About the equilibrium and kinetic adsorption, the Sips model and pseudosecond order showed the best experimental data adjusted, indicating that the adsorption monolayer was dependent on the ions onto the biosorbent, with a maximum adsorption capacity of 0.744 mg g −1 after 180 min. Therefore, AC-SC can be used as an alternative material in the removal of organic pollutants, such as drug removal.

Resumo A investigação microscópica dos flocos e da microfauna presente no lodo é um importante indicador do desempenho

Controle de qualidade do biodiesel B100 oriundo do processamento de óleo degomado de soja-Nota técnica Quality control of B100 biodiesel obtained from soy biodiesel processing-Technical note

Currently, one of the main focuses globally is the stability of the environment for future generations. For this to be possible, it is necessary to preserve natural resources, such as water, as it is essential for the continuity of life on the planet. However, due to the massive increase in residual water and the improper consumption of medications, which are generally not fully metabolized, being excreted inappropriately, becoming an environmental liability. In this context, several treatment techniques have been used to promote the correct disposition for this wastewater, highlighting the adsorption process due to its ease, low cost, and the possibility of using alternative materials (biosorbents). Thus, the present work aims to present a bibliographic review of a qualitative and exploratory character on the application of agro-industrial residues, as alternative materials, for the removal of medicines, through a study of adsorption equilibrium, using the Langmuir, Freundlich, Temkin and Sips isotherms and adsorption kinetics, using the Pseudo-First-Order, Pseudo-Second-Order and Elovich models. Therefore, research demonstrated positive results in the removal of organic pollutants such as the industrial use of cork and peach kernel for the removal of paracetamol, where a Q máx of 200 and 113 mg g -1 was obtained for Langmuir , n of 3.1 and 2.4 for Freundlich agreeing with the same, and having an optimal Pseudo-Second-Order kinetics of R 2 of 0.999 for both, therefore, with this article it was possible to verify the use of several biosorbent in the removal of the mentioned drugs previously.