During embryonic development genetic cascades control gene activity and cell differentiation. In a new publication of the journal PNAS, the team of Ulrich Technau of the Department of Molecular Evolution and Development at the University of Vienna reported that besides the genetic program, also mechanical cues can contribute to the regulation of gene expression during development. Comparisons with other animals suggests that this regulatory principle is ancient.
The tectonic setting and deforming kinematics of Yanshan tectonic belt are still matters of controversy. Recognizing syn-tectonic sedimentation and clarifying its relationship with structures are the key points to further reveal timing and kinematics of tectonic deformation in Yanshan belt. Now researchers in CUGB have identified five types of growth strata developed in growth structures, and suggested that 'pair' of fold-thrust belt and flexure basin might have been controlled by western Paleo-Pacific flat-slab subduction.
New research shows how some of these harmful microbes have to contend not just with a farmer's chemical attacks, but also with their microscopic neighbors -- and themselves turn to chemical warfare to ward off threats.
If you want to know how to make a sneaker with better traction, just ask a snake. That's the theory driving the research of Hisham Abdel-Aal, PhD, an associate teaching professor from Drexel University's College of Engineering who is studying snake skin to help engineers improve the design of textured surfaces, such as engine cylinder liners, prosthetic joints - and yes, maybe even footwear.
A 10-fold increase in the ability to harvest mechanical and thermal energy over standard piezoelectric composites may be possible using a piezoelectric ceramic foam supported by a flexible polymer support, according to Penn State researchers.
As humans, we know that some of our activities can cause cancer to develop in our bodies. Smoking, poor diets, pollution, chemicals used as additives in food and personal hygiene products, and even too much sun can contribute to an increased risk of cancer. But, are human activities also causing cancer in wild animals? Researchers from ASU's School of Life Sciences think so and are urgently calling for research into this topic.
Scientists have published a detailed analysis of how 22 recent hurricanes would change if they instead formed near the end of this century. While each storm's transformation would be unique, on balance, the hurricanes would become a little stronger, a little slower moving, and a lot wetter.
Bacteria have long been thought to develop antibiotic resistance largely due to repeated exposure through over-prescribing. But could much bigger environmental pressures be at play?
The final bulletin on Tropical Cyclone Sagar was issued at 11 a.m. EDT (1500 UTC) on May 19. By that time, Sagar had made landfall in Somalia. NASA's Terra satellite captured an infrared image of the storm as it was making landfall.
Researchers from Chalmers University of Technology, Sweden, have developed new technologies that can be used to convert industrial plants to produce fossil-free heat, electricity, fuel, chemicals and materials. The technical potential is enormous -- using only Sweden's currently existing power plants, renewable fuels equivalent to 10 percent of the world's aviation fuel could be produced.