October  1, 2018

With a little help from my friends

Just a few Shigella bacteria are enough to make anyone catch gastroenteritis, while to get sick from Cholera, thousands to millions of Vibrio cholerae bacteria have to be swallowed. Why does the dose needed to cause disease differ so much between...

September 21, 2018

Austria in the fast line of science

Nature Index yesterday published the results of a study aimed at identifying those institutions and countries that are in the fast lane scientifically. The positive result: Austria is among the six countries in the world with the highest absolute and...

September 11, 2018

Can you evolve while being robust?

It is often thought that DNA, together with the genes encoded in it, is the essence of life. But equally important is coordinating when genes are turned on and off. In fact, it is this process, called regulation of gene expression,...

August 20, 2018

Metamolds: Molding a mold

Fabrication of an object using metamolds. The metamolds (red pieces far left and right) are used to fabricate the silicone molds (greenish and white shapes in the middle). The silicone can then be used repeatedly to form replicas (front). Image credit:...

August 17, 2018

Color effects from transparent 3D-printed nanostructures

Light hits the 3D-printed nanostructures from below. After it is transmitted through, the viewer sees only green light—the remaining colors are redirected. Image credit: Thomas Auzinger Most of the objects we see are colored by pigments, but...

August 16, 2018

Interactive software tool makes complex mold design simple

Objects created using the new design tool using resin casting or injection molding. Image credit: Ran Zhang Most of the plastic objects we see are created using injection molding, but designing such molds is a difficult task, usually requiring...

August 14, 2018

New interactive machine learning tool makes car designs more aerodynamic

The new software instantly shows stream lines as well as pressure on the surface (color-coded) of interactively deformable shapes. Image credit: Nobuyuki Umetani When engineers or designers want to test the aerodynamic properties of the newly designed shape of a...

August 13, 2018

New water simulation captures small details even in large scenes

A frame from a real-time animation. The simulation covers a huge area with hundreds of floating objects, but can still include tiny details visible only at close range. Image: Stefan Jeschke When designers select a method for simulating water...

July 30, 2018

New process in root development discovered

Root cap peeling off at the tip of an Arabidopsis rootCredit: Ivan Kulik As the plant root grows, a root cap protects its fragile tip. Every few hours, the old cap is lost and a new one replaces it. This...

July 16, 2018

Plant mothers talk to their embryos via the hormone auxin

Image (click to enlarge): Arabidopsis developing seed: Auxin (here visualized in green) is produced and accumulates in the maternal tissue close to the young embryo. © Chulmin ParkWhile pregnancy in humans and seed development in plants...