Ocorrência de Platypus sulcatus em acácia-negra (Acacia mearnsii).

E reportada, pela primeira vez, a ocorrencia da broca do tronco, Platypus sulcatus Chapius, 1865, Coleoptera: Platypodidae (sinonimia P. plicatus Bretes, 1908) em plantios de Acacia-negra no Estado do Rio Grande do Sul. Esta broca foi observada causando galerias em troncos de arvores, caracterizando-se pela presenca de goma e de serragem no orificio de entrada da galeria.Notas tecnicas

Tourism planning informatization

The Tourism activity, due to its own characteristics, causes high environmental impact and its development should be influenced by the environmental characteristics of each region. The Information Systems, mainly those which represent the geographical information, will permit the development of a design, allowing the Decision-Maker the consult, the management and the presentation of decision schemes based on the defined measures of the Tourism Planning of a region. As the information associated with this design should be real and update, the Internet should be used as a means of access to the information of the region. The design presents the schemes associated to each decision, offering competitive advantages to the Decision-Makers involved in the decision process, since it is possible to evaluate, foresee and control the future environmental impacts of Tourism

GIS on tourism planning: preventing the impacts caused by the developing tourism activity in a specific site

The environment is one of the greatest concerns of humankind. Nowadays, the activities which improve or destroy it must be assessed and controlled by efficient means which should permit the control of environmental impact caused by the development of these activities. This document presents an information system implementation, as a Decision Support system, allowing the Decision Maker to evaluate, foresee and control the future environmental impact of Tourism through consultation, the management and the presentation of decision schemes based on defined measures of a regional tourism planning

Fenton pre-oxidation of natural organic matter in drinking water treatment through the application of iron nails

This study investigated for the first time the efficiency of an advanced oxidation process (AOP) zero valent iron/hydrogen peroxide (ZVI/H2O2) employing iron nails for the removal of Natural Organic Matter (NOM) from natural water of Regent's Park lake, London, UK. The low cost of nails and their easy separation from the water after the treatment make this AOP attractive for water utilities in low- and middle-income countries. The process was investigated as a pre-oxidation step for drinking water treatment. Results showed that UV254 removal in the natural water was lower than that of simulated water containing commercial humic acid (HA), indicating a matrix effect. Statistical analysis confirmed the maximum removal of dissolved organic carbon (DOC) in natural water depends on the initial pH (best at 4.5) and H2O2 dosage (best at 100% excess of stoichiometric dosage). DOC and UV254 removals under this operational condition were 51% and 89%, respectively. Molecular weight (MW) and specific UV absorbance (SUVA254) were significantly reduced to 74% and 78%, respectively. Formation of chloroform THM in natural water sample after the ZVI/H2O2 process (initial pH 4.5) was below the limit for drinking water, and 48% less than the THM formation in the same water not subjected to pre-oxidation. Characterization of oxidation products on the iron-nail-ZVI surface after the ZVI/H2O2 treatment by SEM, XRD, and XPS identified the formation of magnetite and lepidocrocite. Results suggest that the investigated ZVI/H2O2 process to be a promising technology for removing NOM and reducing THM formation during drinking water treatment

Características físico-químicas de progênies de meios-irmãos de maracujazeiro amarelo.

Grande parte da variabilidade genética presente no gênero Passiflora está dispersa no território brasileiro, o que coloca nosso país entre um dos principais centros de diversidade genética deste gênero, toda esta variabilidade é passível de exploração no melhoramento genético. A escolha dos genitores e o planejamento cuidadoso dos cruzamentos aumentam as chances do desenvolvimento de variedade superiores, pois maximiza o uso dos genes desejáveis. O uso de progênies de meios-irmãos é comum no melhoramento da cultura, pela facilidade de obtenção dessas populações e pelo fato de se poderem estimar: a variância genética aditiva, a herdabilidade e, consequentemente, o progresso esperado com a seleção. O presente trabalho objetivou avaliar a qualidade dos frutos de vinte progênies de meios-irmãos de maracujá amarelo provenientes do 2º ciclo de seleção entre e dentro de progênies de meios-irmãos, para subsidiar a continuidade do processo seletivo.PDF. 013

Competicao entre cultivares de tomate (Lycopersicum esculentum Mill) em seis epocas de semeadura, no Piaui: II - Resultados obtidos na primeira e segunda epoca.

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