Health & Fitness

Engineers have shown that medical devices made from aluminum can be disintegrated within the body by exposing them to gallium-indium, a liquid metal that seeps into the boundaries between the grains of the metal.

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The experts weigh in on the dos and don'ts of number twos. 

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An innovative technology has been developed to enable bone regeneration to correct large bone defects by means of a special hydrogel. Following successful tests in an animal model, the researchers now plan to move forward to clinical trials.

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Countless tiny hairs (cilia) are found on the outer wall of some cells, for example in our lungs or in our brain. When these micrometer-sized hairs coordinate their movement and produce wave-like movements together, they can cause currents on a microscale and thus pump fluid from one place to another. Until now, this could only be studied in large computer simulations. However, more than a few thousand hairs cannot be simulated in this way. Now a continuum theory of micro-hairs has been developed -- a powerful and completely new approach.

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A linguistic analysis of Nazi propaganda suggests that dehumanization of Jews shifted over time, with propaganda after the onset of the Holocaust portraying Jews as having a greater capacity for agency, relative to earlier propaganda focused on disengaging moral concern.

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In Alzheimer's disease, the degeneration of brain cells is linked to formation of toxic protein aggregates and deposits known as amyloid plaques. Similar processes play an important role also in type 2 diabetes. A research team has now developed 'mini-proteins', so-called peptides, which are able to bind the proteins that form amyloids and prevent their aggregation into cytotoxic amyloids.

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A definitive diagnosis of Alzheimer's disease (AD) was once only possible after someone had died, but recent biomarker studies have led to the development of imaging and spinal fluid tests for those still living. However, the tests can only monitor severe disease, differentiating advanced AD from related disorders. Researchers have now identified a biomarker that could help physicians diagnose AD earlier, as a patient transitions into mild cognitive impairment (MCI).

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