Why dinosaurs were larger than today's terrestrial mammals

in biology

Why were some dinosaurs able to get so much larger than today's terrestrial mammals? It was hypothesized that large dinosaurs might have faced a lower risk of extinction under ecological changes than similar-sized mammals, because large dinosaurs had a higher potential reproductive output than similar-sized mammals (JC hypothesis).

Notre Dame researchers develop paint-on solar cells

in technology

Imagine if the next coat of paint you put on the outside of your home generates electricity from light—electricity that can be used to power the appliances and equipment on the inside.

A team of researchers at the University of Notre Dame have created an inexpensive "solar paint" that uses semiconducting nanoparticles to produce energy.

Multisensory integration: when correlation implies causation

in biology

In order to get a better picture of our surroundings, the brain has to integrate information from different senses, but how does it know which signals to combine? New research has demonstrated that humans exploit the correlation between the temporal structures of signals to decide which of them to combine and which to keep segregated.

Human artificial chromosome-based vectors in gene therapy

in medicine, biology, omics

In a new research report scientists now describe a combination of direct gene-cloning technology with the human artificial chromosome- based vector for gene delivery. Gene delivery, one of the steps necessary for gene therapy, is the process of introducing foreign genes into host cells. 

Mars could contain water and microbes - ANU Researchers

in biology

Scientists from The Australian National University have found that extensive regions of the sub-surface of Mars could contain water and be at comfortable temperatures for terrestrial – and potentially martian – microbes.

World’s Smallest Electronic Circuit Developed

in technology

A team of scientists has engineered one of the world's smallest electronic circuits. It is formed by two wires separated by only about 150 atoms or 15 nanometers.

What are Stem Cells? Embryonic and Adult Stem Cells

in medicine, biology, education

A stem cell is an unspecialized cell that is not terminally differentiated and has the potential to acquire a more specialized function by differentiation. Stem cells may be classified based upon their stage of differentiation or their differentiation lineage. All terminally differentiated cells had their beginning in embryonic stem cell progenitors.

A novel reconfigurable silicon nanowire transistor

in technology

In a recently published paper, researchers report the development of a novel type of nano-transistors which are based on individually gated nanometer scale nanowire heterojunctions where electrons and holes are filtered selectively.