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The symbiotic alga Trebouxia fuels a coherent soil ecosystem on the landscape scale in the Atacama Desert.
Environ Microbiome
August 2024
Department of Integrative Biotechnology, University of Applied Sciences Kaiserslautern, Pirmasens, Germany.
Biocrusts represent associations of lichens, green algae, cyanobacteria, fungi and other microorganisms, colonizing soils in varying proportions of principally arid biomes. The so-called grit crust represents a recently discovered type of biocrust situated in the Coastal Range of the Atacama Desert (Chile) made of microorganisms growing on and in granitoid pebbles, resulting in a checkerboard pattern visible to the naked eye on the landscape scale. This specific microbiome fulfills a broad range of ecosystem services, all probably driven by fog and dew-induced photosynthetic activity of mainly micro-lichens.
View Article and Find Full Text PDFRemoval of flocculated TiO nanoparticles by settling or dissolved air flotation.
Environ Technol
March 2021
Departamento de Engenharia de Minas Laboratório de Tecnologia Mineral e Ambiental (LTM), Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil.
Engineered nanoparticles of TiO (TiO-NPs) are used in the industry for a great number of applications. After their usage, the particles end up in aquatic environments, contaminating supply waters and watercourses. Bench-scale studies report removal of TiO-NPs (450 nm, the mean volumetric diameter) by flocculation followed by settling or by dissolved air flotation (4 bar saturation pressure and 30% recycling ratio).
View Article and Find Full Text PDFMicro-computed tomography scan and virtual histological slide data for the land planarian Obama otavioi (Platyhelminthes).
Gigascience
October 2016
Museum of Comparative Zoology, Department of Invertebrate Zoology, Harvard University, Cambridge, Massachusetts USA.
Background: We investigated whether images obtained through X-ray micro-computed tomography (μCT) can be used in conjunction with traditional methods for morphological studies of soft-bodied land planarians. μCT is non-invasive and provides true-to-scale three-dimensional imagery at high resolution. We compared μCT-based images of a recently described land planarian species of Obama otavioi (Platyhelminthes) with those obtained from light microphotography of histological sections, most of which were also digitized at high magnification.
View Article and Find Full Text PDFRotating mirror cameras represent a workhorse technology for high speed imaging in the MHz framing regime. The technique requires that the target image be swept across a series of juxtaposed CCD sensors, via reflection from a rapidly rotating mirror. Employing multiple sensors in this fashion can lead to spatial jitter in the resultant video file, due to component misalignments along the individual optical paths to each CCD.
View Article and Find Full Text PDFUltrastructural assessment of cellulite morphology: clues to a therapeutic strategy?
Laser Ther
October 2013
Department of Dermatology, Queen's Square Medical Center, Yokohama ; Department of Dermatology, Nippon Medical School, Tokyo.
Introduction And Aims: Cellulite is a problematic condition affecting mostly women, characterized by a bumpy or nodular skin surface. Recent approaches with laser treatment have offered some promise. The present study sought to identify possible targets for laser treatment or light therapy through an ultrastructural investigation of the condition.
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