Cattelia

Metaphase of mitosis

Tue, 30 Apr 2013 13:33:39 -0400

Metaphase of mitosis

by Michael Kvium

Mon, 29 Apr 2013 09:47:40 -0400

by Michael Kvium

Photo

Sat, 27 Apr 2013 16:12:38 -0400

Photo

Sat, 27 Apr 2013 14:27:00 -0400

Scanning electron photo of a nucleosome string. Bead-like...

Sat, 27 Apr 2013 14:21:33 -0400

Scanning electron photo of a nucleosome string. Bead-like structure: histones, thread-like structure: DNA

experimentsinmotion: Studies on Hierarchy and Non-linear...

Wed, 21 Nov 2012 11:36:05 -0500

experimentsinmotion:

Studies on Hierarchy and Non-linear Effects

A mesmerizing series of algorithmic architectural studies by Studio Kinch

ikenbot: Jupiter’s Spots In what’s beginning to look like a...

Mon, 12 Nov 2012 11:37:24 -0500

ikenbot:

Jupiter’s Spots

In what’s beginning to look like a case of planetary measles, a third red spot has appeared alongside its cousins — the Great Red Spot and Red Spot Jr. — in the turbulent Jovian atmosphere.

This third red spot, which is a fraction of the size of the two other features, lies to the west of the Great Red Spot in the same latitude band of clouds.

The new red spot was previously a white oval-shaped storm. The change to a red color indicates its swirling storm clouds are rising to heights like the clouds of the Great Red Spot. One possible explanation is that the red storm is so powerful it dredges material from deep beneath Jupiter’s cloud tops and lifts it to higher altitudes where solar ultraviolet radiation — via some unknown chemical reaction — produces the familiar brick color.

Detailed analysis of the visible-light images taken by Hubble’s Wide Field Planetary Camera 2 on May 9 and 10, and near-infrared adaptive optics images taken by the W.M. Keck telescope on May 11, is revealing the relative altitudes of the cloud tops of the three red ovals. Because all three oval storms are bright in near-infrared light, they must be towering above the methane in Jupiter’s atmosphere, which absorbs the Sun’s infrared light and so looks dark in infrared images.

Turbulence and storms first observed on Jupiter more than two years ago are still raging, as revealed in the latest pictures. The Hubble and Keck images also reveal the change from a rather bland, quiescent band surrounding the Great Red Spot just over a year ago to one of incredible turbulence on both sides of the spot.

Red Spot Jr. appeared in spring of 2006. The Great Red Spot has persisted for as long as 200 to 350 years, based on early telescopic observations. If the new red spot and the Great Red Spot continue on their courses, they will encounter each other in August, and the small oval will either be absorbed or repelled from the Great Red Spot. Red Spot Jr. which lies between the two other spots, and is at a lower latitude, will pass the Great Red Spot in June.

Full Photo Description

holymoleculesbatman: Warfarin (C19H16O4) It is...

Wed, 31 Oct 2012 16:08:52 -0400

holymoleculesbatman:

Warfarin (C₁₉H₁₆O₄)

It is an anticoagulant normally used in the prevention of thrombosis and thromboembolism, the formation of blood clots in the blood vessels and their migration elsewhere in the body respectively. It was initially introduced in 1948 as a pesticide against rats and mice and is still used for this purpose, although more potent poisons such as brodifacoum have since been developed. In the early 1950s warfarin was found to be effective and relatively safe for preventing thrombosis andembolism (abnormal formation and migration of blood clots) in many disorders. It was approved for use as a medication in 1954 and has remained popular ever since; warfarin is the most widely prescribed oral anticoagulant drug in North America.

wowgreat: Picture 127 (by Surface Fragments 2)

Sun, 28 Oct 2012 14:23:17 -0400

wowgreat:

Picture 127 (by Surface Fragments 2)

luafance: Sughero 100x #biology #cells #school

Sun, 28 Oct 2012 11:28:24 -0400

luafance:

Sughero 100x #biology #cells #school

thislifeforever: Monkey-Man 1930, Brazil

Sun, 28 Oct 2012 11:15:08 -0400

thislifeforever:

Monkey-Man

1930, Brazil

Photo

Sun, 28 Oct 2012 11:13:21 -0400

sergioalbiac: Andrea - Generative portrait on archival paper....

Sun, 28 Oct 2012 10:57:04 -0400

sergioalbiac:

Andrea - Generative portrait on archival paper. Pigmented inks. 59’4x42 cm. Edition of 20.

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www.sergioalbiac.com

laboratoryequipment: Spider Silk Can Be Used for Biosensors,...

Sun, 28 Oct 2012 10:55:29 -0400

laboratoryequipment:

Spider Silk Can Be Used for Biosensors, Lasers, Microchips

Spiders use their silk to catch lunch. Now physicists are using it to catch light. New research shows that natural silk could be an eco-friendly alternative to more traditional ways of manipulating light, such as through glass or plastic fiber optic cables. Two teams independently exploring possible applications for the material’s photonic talents will present their latest breakthroughs at the Optical Society’s (OSA) Annual Meeting, Frontiers in Optics (FiO) 2012.

Biomedical engineer Fiorenzo Omenetto of Tufts Univ. in Boston will discuss his group’s work fabricating concoctions of proteins that make use of silk’s optical properties for implantable sensors and other biology-technology interfaces.

Read more: http://www.laboratoryequipment.com/news/2012/10/spider-silk-can-be-used-biosensors-lasers-microchips

Photo

Sun, 28 Oct 2012 10:52:12 -0400

Photo

Sun, 09 Sep 2012 12:48:25 -0400

Infection from bee sting, after a week. I’m crossing my...

Wed, 08 Aug 2012 07:29:00 -0400

Infection from bee sting, after a week. I’m crossing my fingers (as much as I can) because I may be facing operation if the swelling doesn’t subside.

staceythinx: These high definition topographic maps of the...

Tue, 17 Jul 2012 15:51:02 -0400

staceythinx:

These high definition topographic maps of the Earth’s Moon were the first of their kind. They were based on observations made by Japan’s lunar spacecraft Kaguya (Selene) in 2008.

Photo

Sat, 14 Jul 2012 20:28:37 -0400

juliusnielsen: with cattelia

Sat, 14 Jul 2012 10:09:13 -0400

juliusnielsen:

with cattelia