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Crédito: Collection Abecasis/ Science Photo Library/ Science Photo Library/ Fotoarena

Direito Controlado


Cod. da imagem: c0387646

Crédito: Collection Abecasis/ Science Photo Library/ Science Photo Library/ Fotoarena

Mexican pyramid. 1877 illustration of an ancient stepped pyramid in Mexico.

Editorial RM
Crédito: Zephyr/ Science Photo Library/ Science Photo Library/ Fotoarena

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Cod. da imagem: c0403254

Crédito: Zephyr/ Science Photo Library/ Science Photo Library/ Fotoarena

Brain arteries and venous sinuses. Coloured lateral 3D computed tomography (CT) angiogram, overlaid on a human head, showing some of the brain arteries (pink) and venous sinuses (purple) of a 32-year-old man. The major internal neck arteries (carotid and vertebral) are shown meeting at the circle of Willis and branching out into the brain. The venous sinuses receive deoxygenated blood from the brain's veins and mostly channel it to the internal jugular veins in the neck.

Editorial RM
Crédito: Stephen Burt/ Science Photo Library/ Science Photo Library/ Fotoarena

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Cod. da imagem: c0400906

Crédito: Stephen Burt/ Science Photo Library/ Science Photo Library/ Fotoarena

Altocumulus stratiformis clouds over a rural scene. Altocumulus clouds occur at middle altitudes (2400-6000 metres). There are several types of altocumulus clouds. Altocumulus stratiformis typically forms sheets and is associated with fair weather. Photographed on a summer morning in southern England.

Editorial RM
Pigmented skin, light micrograph

Cod. da imagem: c0394805
Crédito: Jose Calvo / Science Photo Library/ Science Photo Library/ Fotoarena

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Cod. da imagem: c0394805

Crédito: Jose Calvo / Science Photo Library/ Science Photo Library/ Fotoarena

Light micrograph of a section through the deep region of the epidermis of the skin. There is a large amount of melanin pigment (brown) in the basal and spinous (inner) layers. The pigmented cells are both melanocytes and keratinocytes.

Editorial RM
Altocumulus floccus clouds at sunset

Cod. da imagem: c0400904
Crédito: Stephen Burt/ Science Photo Library/ Science Photo Library/ Fotoarena

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Cod. da imagem: c0400904

Crédito: Stephen Burt/ Science Photo Library/ Science Photo Library/ Fotoarena

Altocumulus floccus clouds at sunset. Altocumulus clouds occur at middle altitudes (2400-6000 metres). There are several types of altocumulus clouds. Altocumulus floccus clouds often indicate medium-level instability in the atmosphere and frequently precede thundery conditions. A thunderstorm occurred two hours after this photograph was taken.

Editorial RM
Crédito: Webpathology/ Science Photo Library/ Science Photo Library/ Fotoarena

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Cod. da imagem: c0389588

Crédito: Webpathology/ Science Photo Library/ Science Photo Library/ Fotoarena

Mucinous carcinoma of the colon, light micrograph. This is a type of adenocarcinoma, a cancer of the glandular lining that is found in many different organs, including the digestive tract. Colon cancer is one of the most common cancers in North America and Western Europe. It is thought to be connected to a diet high in fat and low in fibre. This image shows the malignant glands surrounded by large amounts of extracellular mucin. Mucinous carcinomas (also called colloid carcinomas) account for around 10 percent of all colorectal carcinomas. They show high levels of microsatellite instability. The mucin is rich in MUC2 protein.

Editorial RM
Molecular elevator, molecular model

Cod. da imagem: c0403396
Crédito: Mikkel Juul Jensen / Science Photo Library/ Science Photo Library/ Fotoarena

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Cod. da imagem: c0403396

Crédito: Mikkel Juul Jensen / Science Photo Library/ Science Photo Library/ Fotoarena

Molecular model of a molecular elevator, a type of molecular machine. The elevator is made from small organic molecular subunits. The platformlike component (red) is interlocked with a tripodal riglike component. Switching the pH of the medium around the molecular elevator from acidic (right) to alkaline (left) makes the platform move between two recognition units (blue and yellow) on the tripod. The 2016 Nobel Prize in Chemistry was awarded to the chemists Jean-Pierre Sauvage (b. 1944), Sir J. Fraser Stoddart (b. 1942) and Bernard Feringa (b. 1951) for their work on the design and synthesis of molecular machines. Stoddart's work on molecular elevators was published in 2004.

Editorial RM
Vein valve, illustration

Cod. da imagem: c0388440
Crédito: Mikkel Juul Jensen / Science Photo Library/ Science Photo Library/ Fotoarena

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Cod. da imagem: c0388440

Crédito: Mikkel Juul Jensen / Science Photo Library/ Science Photo Library/ Fotoarena

Vein valve. Computer illustration of a section through a vein, showing a valve (centre) and the layers that make up the vein's wall: (from outside in) adventitia, smooth muscle, basement membrane, endothelium. Veins contain valves to prevent blood from flowing back in the wrong direction.

Editorial RM
Market, Bali, Indonesia

Cod. da imagem: c0394931
Crédito: Sinclair Stammers/ Science Photo Library/ Science Photo Library/ Fotoarena

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Cod. da imagem: c0394931

Crédito: Sinclair Stammers/ Science Photo Library/ Science Photo Library/ Fotoarena

Editorial use only Market. Woman selling vegetables on a market stall. Photographed in Bali, Indonesia.

Editorial RM
Loading crates into removals lorry

Cod. da imagem: c0390189
Crédito: Lewis Houghton/ Science Photo Library/ Science Photo Library/ Fotoarena

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Cod. da imagem: c0390189

Crédito: Lewis Houghton/ Science Photo Library/ Science Photo Library/ Fotoarena

Removals and storage facility. Forklift being used to load crates in a removals lorry of a company specialising in domestic removals and storage.

Editorial RM
Inner ear structures, 3D MRI scan

Cod. da imagem: c0400965
Crédito: K H Fung/ Science Photo Library/ Science Photo Library/ Fotoarena

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Cod. da imagem: c0400965

Crédito: K H Fung/ Science Photo Library/ Science Photo Library/ Fotoarena

Inner ear structures. Coloured 3D magnetic resonance imaging (MRI) scan of the structures of a normal human inner ear. The structures shown here are the vestibule (centre), the semicircular canals (upper right), and the cochlea (lower left). The inner ear is responsible for balance and hearing.

Editorial RM
Irhoud fossil skull, illustration

Cod. da imagem: c0387935
Crédito: John Bavaro Fine Art/ Science Photo Library/ Science Photo Library/ Fotoarena

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Cod. da imagem: c0387935

Crédito: John Bavaro Fine Art/ Science Photo Library/ Science Photo Library/ Fotoarena

Irhoud fossil skull, illustration. The Irhoud fossils are specimens of early Homo sapiens. They date to over 300,000 years old, the oldest known fossils of anatomically modern Homo sapiens. This skull was one of a number of fossils found since 1960 at the archaeological site of Jebel Irhoud in Morocco.

Editorial RM
Carrot, Kirlian photograph

Cod. da imagem: c0400871
Crédito: Booth/ Garion/ Science Photo Library/ Science Photo Library/ Fotoarena

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Cod. da imagem: c0400871

Crédito: Booth/ Garion/ Science Photo Library/ Science Photo Library/ Fotoarena

Carrot, Kirlian photograph. Kirlian photography is a photographic technique that records the coronal discharge from an object placed in a strong electric field. Also called electrography or corona discharge photography, it is based on the principle of the corona discharge phenomenon that takes place when an electrically grounded object generates an electrical field, discharging sparks between itself and an electrode.

Editorial RM
Loris, 19th century

Cod. da imagem: c0400765
Crédito: Collection Abecasis/ Science Photo Library/ Science Photo Library/ Fotoarena

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Cod. da imagem: c0400765

Crédito: Collection Abecasis/ Science Photo Library/ Science Photo Library/ Fotoarena

Loris, 19th-century illustration. Described in the 1850s with the now-obsolete taxonomy 'Stenops' and known at the time as a 'lemur', this animal is now classified as a loris, a group of primates found in India, Sri Lanka, and parts of south-eastern Asia. Artwork published in 1856.

Editorial RM
Cycle park, Amsterdam

Cod. da imagem: c0397606
Crédito: Richard Wareham Fotografie/ Science Photo Library/ Science Photo Library/ Fotoarena

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Cod. da imagem: c0397606

Crédito: Richard Wareham Fotografie/ Science Photo Library/ Science Photo Library/ Fotoarena

Cycle park, Amsterdam, the Netherlands. Commuter looking for a spare space among the thousands of bikes in a multi-level cycle park. The city council has estimated that the number of bicycles in Amsterdam is larger than the population (881,000 bikes and 853,000 people). Photographed from Zilveren Toren (Level Eleven), Amsterdam, the Netherlands, on 24 March 2018.

Editorial RM
Azithromycin antibiotic drug pills

Cod. da imagem: c0387358
Crédito: Dr P. Marazzi/ Science Photo Library/ Science Photo Library/ Fotoarena

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Cod. da imagem: c0387358

Crédito: Dr P. Marazzi/ Science Photo Library/ Science Photo Library/ Fotoarena

Azithromycin antibiotic drug pills. Four 250 mg caplets of the antibiotic drug azithromycin. This drug is a macrolide antibiotic, and is most often used to treat bacterial infections of the respiratory tract such as tonsillitis, throat infections, laryngitis, bronchitis, and pneumonia. It was developed in the 1980s at the Croatian pharmaceutical company Pliva, and is now marketed under a wide variety of brand names worldwide. These pills are a generic form of the drug.

Editorial RM
Vernatt's Drain, Lincolnshire, UK

Cod. da imagem: c0394681
Crédito: Mark Williamson/ Science Photo Library/ Science Photo Library/ Fotoarena

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Cod. da imagem: c0394681

Crédito: Mark Williamson/ Science Photo Library/ Science Photo Library/ Fotoarena

The sluice on Vernatt's Drain, part of the Lincolnshire fens drainage scheme designed to stop farmland becoming permanently flooded. The sluice is at the point on Vernatt's Drain where it feeds into the River Welland near Spalding, Lincolnshire, UK, a market town in the Lincolnshire fens.

Editorial RM
Red blood cells, SEM

Cod. da imagem: c0388754
Crédito: Steve Gschmeissner/ Science Photo Library/ Science Photo Library/ Fotoarena

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Cod. da imagem: c0388754

Crédito: Steve Gschmeissner/ Science Photo Library/ Science Photo Library/ Fotoarena

Red blood cells. Coloured scanning electron micrograph (SEM) of red blood cells (RBCs, erythrocytes). Red blood cells are biconcave, disc-shaped cells that transport oxygen from the lungs to body cells. They circulate in the blood and also remove carbon dioxide to the lungs for exhalation. Their red colour is due to the oxygen-carrying protein haemoglobin. Red blood cells, the most abundant cell in the blood, have no nucleus and are about 7 micrometres across. Magnification: x7000 when printed at 10 centimetres across

Editorial RM
Crédito: Mikkel Juul Jensen / Science Photo Library/ Science Photo Library/ Fotoarena

Direito Controlado


Cod. da imagem: c0387842

Crédito: Mikkel Juul Jensen / Science Photo Library/ Science Photo Library/ Fotoarena

Earth's orbit and solstices and equinoxes, illustration. The Earth is shown in its orbit (grey ellipse) around the Sun (sizes and distances not to scale), with the Earth's axis of rotation (red lines) and axial tilt shown. The equator and axis of rotation are tilted at an angle of just over 23 degrees. This axial tilt gives rise to the Earth's seasons as it orbits the Sun during the year. The four points of the year shown here, and named from the perspective of the northern hemisphere, are (anti-clockwise from upper right): the summer solstice, the autumnal equinox, the winter solstice, and the vernal equinox (in spring). The solstices are the longest and shortest days of the year. The equinoxes are the two points of the year where the day and night are about the same length.

Editorial RM
Florida red-bellied cooters

Cod. da imagem: c0397533
Crédito: Bob Gibbons/ Science Photo Library/ Science Photo Library/ Fotoarena

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Cod. da imagem: c0397533

Crédito: Bob Gibbons/ Science Photo Library/ Science Photo Library/ Fotoarena

Florida red-bellied cooters, or Florida redbelly turtle, (Pseudemys nelsoni) basking on a log. Photographed in the Everglades, Florida, USA.

Editorial RM
 
 
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