Los radiolarios son un grupo de protozoos marinos, silíceos y holoplanctónicos, cuyo desconocimiento es manifiesto en las aguas marinas chilenas. El presente trabajo constituye inventario preliminar, ilustrar y descripción las especies de radiolarios encontradas en 14 muestras de sedimento recolectadas en el Puerto de Caldera, Chile. El número total de especies encontradas en las muestras estudiadas fue de 30, distribuidas en 24 géneros, 8 familias (Actinommidae, Collosphaeridae, Litheliidae, Phacodiscidae, Pterocorythidae, Spongodiscidae, Theoperidae y Tholoniidae) y 2 órdenes (Spumellaria y Nassellaria). La escasez de conocimientos biológicos, zoogeográficos y taxonómicos de los Radiolaria chilenos impide, por el momento, utilizar a estos organismos como indicadores hidrológicos de acontecimientos oceánicos en el Océano Pacífico sur oriental.

Contractors use diverse methodologies and software that require more working hours just to synchronize all the data related to cost, schedule and quantities, the most widespread methodologies are CPM and BIM models. However, the use CPM does not provide the tools to control the project with the current production status. The use of 5D BIM models (integrated quantities, cost and schedules) and flow lines (scheduling system from the Location Based Management System) are proposed as more effective methods, these allow the contractor to automate and improve their scheduling and controlling processes. These methodologies were implemented in the planning process of the foundations and structure stage of a complex building, then compared to the methods used by the contractor (CPM, 3D and 4D models). Choosing by Advantages (CBA), a system that supports sound decision-making using comparisons among advantages of alternatives, was used to compare the methods mentioned, then a total of three alternatives and eight factors were evaluated by the researchers and contractor. The use of 5D models and flowlines were found to be the best alternative, some factors that stand out are scheduling with an effective Lean Production system, synergy with Earn value reports, and automation in quantities and scheduling.

Thecamoebians are protozoans that inhabit a wide variety of terrestrial and freshwater habitats, including wet soils, lakes, saltmarshes, peatlands, etc. Their fossil shells can be recuperated from sediments in quantity sufficient to permit estimation of relative abundance. The objective of this study was to provide a first report on the distribution of thecamoebian fauna within a peatland located in the Puyehue National Park, Chile. This study revealed 42 taxa belonging to 9 families and 15 genera of thecamoebians. Six taxa (Arcella artocrea, Difflugia elegans, Euglypha sp. "A", Heleopera sp. "A", Hyalosphenia subflava and Nebela speciosa) have not previously been recorded from Chile. We have used an informal infraspecific nomenclature to account for the variability in shell morphology within some species (Centropyxis constricta, Centropyxis ecornis, Certesella martiali and Heleopera petricola). In the four microsites studied two groups of characteristic thecamoebian species were distinguished. The results of this study suggest that Oxygen and pH may influence the distribution of thecamoebians in the peatland.

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