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Один из наиболее популярных 8-и битных микроконтроллеров.
Размер кристалла — 2855x2795µm, технологические нормы 500nm.
Signals called neuregulin (red) and ErbB4 (green) are captured in neurons. The cell nucleus (magenta) and MAP2 (blue) also are shown. Credit: T. Ahmed and A. Buonanno, NICHD
Microscopic creatures that grow to about 0.5mm they are very hardy and can survive extreme temperatures, radiation, dehydration, starvation and even the vacuum of space. Taken through an apex practitioner microscope. Apex minigrab camera and 10x objective.
Microscopy images taken during my fall quarter rotation in Stephen Smith's lab at Stanford. The technique is array tomography, which produces for these crisp, 3D, high resolution, large scale, many-channel fluorescence images.
smithlab.stanford.edu
Legend:
White: DAPI (cell nuclei)
Green: YFP (Subpopulation of layer V pyramidal neurons)
Purple: Tubulin
Blue/Red: Neurofilament
Orange: Myelin Basic Protein
3D structure of a melanoma cell derived by ion abrasion scanning electron microscopy.
Credit: Sriram Subramaniam, National Cancer Institute, National Institutes of Health
It was obvious to check out what happens if one combines the 200mm tube lens with a 2x externder (Canon Extender 2x III).
The resulting tube length is now 400mm and the maginfication goes up to something like 50 times. The center resultion ist still extraordinarily high. The edges are weaker, but not too bad!
Triple phosphate crystals, in their characteristic "coffin lid" shape.
This is dog urine, but these crystals are found in human pee, too, and are not clinically significant, just cool to look at.
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y también en Twiter
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Closterium closterioides es un désmido muy particular de contornos de barco, que, a diferencia de la mayor parte de sus hermanos de género, no presenta la curvatura de luna tan característica en ellos. Pareciera ser un hermano gigante del dimintuto Closterium navicula que hace pocos meses sorteaba los obstáculos inmensos de los granitos de cuarzo de los fondos del Lago en su navegar.
Su cuerpo recto hizo que se incluyese inicialmente entre las especies del género Penium y como sus primos cercanos de ayer, Netrium, Closterium closterioides tiene sus cloroplastos interrumpidos en cada mitad de su cuerpo de gran navío que puede llegar a alcanzar las 350 micras de longitud y esto, para estos seres minúsuculos es llegar a ser un gigantesco trasatlático.
Los cloroplastos en esta especie presentan cuatro o cinco alas longitudinales y en el eje central de cada uno de ellos se disponen dos o tres pirenoides que generalmente son esféricos, pero que también pueden adoptar contornos ligeramente alargados.
Los extremos de este barco alga son redondeados y en su interior se dibujan dos perfectas esferas, vacuolas cargadas de cristalitos de sales de calcio, que como balancines le ayudan a mantener su cuerpo en equilibrio sobre las superficies sobre las que se deslizan o navegan.
Closterium closterioides es una especie cosmopolita a la que le gustan las aguas ácidas, suele vivir en pequeñas lagunas entre esfagnos y prefiere acercarse a las orillas ricas en nutrientes donde además de estos puede recibir con facilidad la luz del Sol.
En la Península Ibérica es una especie que se ha encontrado en muy contadas ocasiones y sólo parecen existir las referencias de Noguerol quien la encontró en La Coruña en la década delos 90, y las que de la primera mitad del siglo veinte hicieron Margalef que la citó de Madrid y Allorge que la halló en Lugo.
Constituye ésta la primera cita para Castilla y León y es la primera vez que se encuentra en el Lago de Sanabria, posiblemente procedente de las pequeñas lagunas de lo alto de la Sierra.
Las condiciones del Lago lamentablemente no son las adecuadas para que estas algas puedan seguir viviendo aquí, Closterium closterioides es un visitante fugaz, un veraneante que está deseando volver a encontrar un Lago de aguas limpias y azules como las que sus antepasados encontraban aquí cuando descendían desde lo alto de las montañas navegando por ríos en saltos de agua limpia.
La imagen, tomada a 400 aumentos con la técnica de contraste de interferencia, procede de una muestra de agua recogida el día 23 de julio de 2014 a 3 metros de profundidad junto a Isla de Moras por Laura e Ismael en el Lago de Sanabria (Zamora), desde el catamarán, entre la Helios Sanabria
informes de contaminación en el Lago de Sanabria
informe de evolución de la contaminación en el Lago de Sanabria
The day I planned involved Roman roads and yomping up hills, but when I opened the curtains this morning it was so dreich ... that I've spent the day fiddling around with teeny tiny things under the microscope.
Isotomurus palustris
This specimen: www.flickr.com/photos/ajc1/24373876127/
100X, 14 images, Zerene PMax
Sony ILCE-6000
E PZ 16-50mm F3.5-5.6 OSS
f5.6 50mm 15s ISO 100
Conducting polymer nanostructures of a thiophene derivative deposited from the vapor phase. This image shows nanotubers covering a freestanding film of a highly conductive and redox active synthetic metal for energy storage applications.
Courtesy of Julio D'Arcy
Image Details
Instrument used: Nova NanoSEM Family
The microscopic structure, made out of tiny balls, is actually a novel gas sensor, which was developed and studied in a collaboration between multiple research institutions. In order to study the cross-section of the sensor material, a piece of the film was placed into silver paste, having the freshly broken edge pointed upwards. After the paste had solidified, it was rather easy to take an image from the top by using secondary electrons.
Paper: doi: 10.1039/c5nr07942j
Courtesy of Mr. Maido Merisalu , University of Tartu
Image Details
Instrument used: Helios NanoLab
Magnification: 2500
Detector: SE
Stack with Mitutoyo Plan Apo 10x/0.28 SL ∞/0 f=200
425 images.
I was lucky to have the opportunity to borrow the Mitutoyo from my employer in exchange for my Nikon CF Plan 10x/0,3 ∞/- for a while, because the Mitutoyo didn't work well with the Nikon 105mm Macro as tube lens. The CF plan works quite well with the 105mm as tub lens, although it is designed for 200mm tube lenses as well.
My tube lens is a resersed Elpro 1:1 (which has 200mm focal length). It seems to work very well with the Mitutoyo. Maybe I can convince my employer to officially exchange the lenses! ;-)
This butterfly has mostly transparent wings without any scales. Only at the base there are some areas with tiny scales, but even thses parts look qiute transparent to the naked eye.
Candida albicans....the microbial agent of candidasis. Cell wall, nucleus and cytoplasmic organelles of viable yeasts, cultured for 24 hours on Sabouarud agar. (1000 X)
A sun animalcule spreads its deadly rays. Like tiny sticky conveyor belts, anything that comes in contacts with these death rays will be mercilessly drawn into the animalcule's cytoplasm and ingested. Rheinburg blue illumination, 160x optical enlargement.
Another stack with the 200mm tube lens, so 25x magnification. This time I really tried to get the best out of the lens. The stack is composed of 909 images for a stacking depth of 105µm. All images were presharpened and denoised prior to stacking.
While the center resultion is really outstandingly high, the corner resultion is not satisfying.
The insect musculature is shown in light blue. Acquired with a Leica SP5 confocal microscope at the Department of Zoology - University of Cambridge.