Do cage fish farms interfere with the food aspects of the wild species Metynnis lippincottianus (Characiformes, Serrasalmidae)?

We evaluated the differences in the diet and trophic guild of Metynnis lippincottianus under the influence of cage fish farms in the Neotropical reservoir. We collected samples from two areas (cage farm and control) in March and June 2019. Stomach contents were examined, and food items were identified and quantified using the volumetric method. Differences in diet composition were evaluated using PERMANOVA and SIMPER analyses, while trophic niche breadth was determined using PERMDISP. The trophic guild for each area was also determined. Significant differences in diet between cage farm and control areas were observed, due to consumption of pelleted feed, microcrustaceans, Egeria sp., and filamentous algae. In both sampling areas, M. lippincottianus was classified as algivorous. Despite the pelleted feed consumption in the cage farm area, no differences were observed in trophic niche breadth and the trophic guild. In addition, algae and macrophytes still accounted for the majority of this species' diet in both areas, indicating partitioning of resources. This resource partitioning may favor coexistence, but it is worth mentioning that pelleted feed consumption still indicates the influence of cage fish farms on the diet of wild fish

Promoção da saúde na gestão de pessoas: experiência no contexto da gestão pública

Objetivo: descrever a experiência de um projeto de ação de promoção da saúde no âmbito da gestão pública de pessoas. Método: Trata-se de relato de experiência de um projeto de ação ocorrido nas cidades paraguaias de Assunção e Colonia Araújo Cué, dentro de um programa de capacitação para os funcionários do Ministério da Saúde, Educação e Ação, denominado Participación Protagónica. Resultados: Foram implementadas ações junto aos servidores de autopercepção; sensibilização de suas próprias necessidades; sensibilização e comprometimento em relação aos problemas da comunidade; e criação de ferramentas de participação nas decisões do governo. O programa dividiu-se nos módulos Corpo e Mente, Afetos e Socialização e contou com uma equipe multiprofissional, composta por terapeuta ocupacional, psiquiatra, psicólogos, sociólogos e assistentes sociais. Conclusão: a experiência paraguaia mostrou que as instituições se fortalecem quando facilitam a sensibilização individual. As demandas, então, tendem a ser mais assertivas, pautando-se em uma gestão de pessoas sustentável e saudável, e, portanto, promotora de saúde

Influence of Autoclaving On Chemical Pulp Fiber Properties for Fiber-cement Applications

In order to evaluate the degradation of cellulose fibres during autoclaving of fibre-cement materials, the properties of chemical pulps submitted to autoclaving in alkaline solutions are studied. It is observed that significant changes in the fibre structure occur as reflected, among other things, by a lowering of the degree of polymerization and of the intrinsic fibre strength (zero-span breaking length). The influence of oxidation on fibre degradation during autoclaving is also studied. It is observed that oxidized fibres reach low levels of intrinsic viscosity after autoclaving, in the case of dichromate and of dichromate-acid chlorite oxidations

A COMPUTER-CONTROLLED SEED GERMINATOR FOR REALISTIC TEMPERATURE RESPONSE STUDIES

The construction and operation of a computer-controlled seed germinator that implements realistic diurnal temperature regimens is described. A key feature of the apparatus is the ability to easily program sinusoidal fluctuations that seeds experience in the soil rather than the square waves typical of many germination cabinets. The apparatus consists of 16 independently-controlled, 25 cm-tall insulated aluminum germination chambers that each hold up to 15 plastic Petri dishes. When programmed for a gradual diurnal fluctuation in temperature, the chamber has little variation in temperature regimen from the center to the top or bottom of the chamber, with a small phase shift in the time when the minimal and maximal daily temperatures occur. Thus, five treatments with three replicates can be placed in each chamber, providing the ability to conduct a five species×16 temperature regimen experiment

A COMPUTER-CONTROLLED SEED GERMINATOR FOR REALISTIC TEMPERATURE RESPONSE STUDIES

The construction and operation of a computer-controlled seed germinator that implements realistic diurnal temperature regimens is described. A key feature of the apparatus is the ability to easily program sinusoidal fluctuations that seeds experience in the soil rather than the square waves typical of many germination cabinets. The apparatus consists of 16 independently-controlled, 25 cm-tall insulated aluminum germination chambers that each hold up to 15 plastic Petri dishes. When programmed for a gradual diurnal fluctuation in temperature, the chamber has little variation in temperature regimen from the center to the top or bottom of the chamber, with a small phase shift in the time when the minimal and maximal daily temperatures occur. Thus, five treatments with three replicates can be placed in each chamber, providing the ability to conduct a five species×16 temperature regimen experiment