The development of luminescent organic radicals has resulted in materials with excellent optical properties for near-infrared (NIR) emission, like organic light-emitting diodes (OLEDs). Light generation in this range could be used for healthcare diagnosis and treatment to surveillance, communications and other security applications. Although an external quantum efficiency greater than 20% in electroluminescence has been […]
Acute myeloid leukemia (AML) is a stem cell disease caused by the massive mobilization and differentiation arrest in primordial granulocytes. AML is characterized by a low survival rate and high recurrence . Although differentiation-induction therapy represents an innovative treatment strategy for AML , many problems still exist, including irreversible resistance, toxic effects, and limitations of […]
Pain is highly personal. What to some doesn’t even deserve the name, for others can be unbereable. Now, we just discovered a difference in how we feel it: men and women have different pain receptors. Recent research has demonstrated in rodents and, importantly, primates including humans, that there are sex differences in pain receptors, also […]
Author: Ambuj Tewari, Professor of Statistics, University of Michigan Over 100 years ago, Alexander Graham Bell asked the readers of National Geographic to do something bold and fresh – “to found a new science.” He pointed out that sciences based on the measurements of sound and light already existed. But there was no science of […]
About 2.5 billion years ago, free oxygen, or O2, first started to accumulate to meaningful levels in Earth’s atmosphere, setting the stage for the rise of complex life on our evolving planet. Scientists refers to this phenomenon as the Great Oxidation Event, or GOE for short. But the initial accumulation of O2 on Earth was […]
Carbon monoxide (CO) oxidation (2CO + O2 → CO2) on platinum (Pt) group metal surfaces is the model heterogeneous gas/surface catalytic reaction. Pt itself is of the upmost importance as a catalyst for car exhaust cleaning or for the water gas shift reaction, whereas Pt crystal surfaces are model systems for investigating the catalytic CO […]
Scientists have used computational algebraic geometry to study predictions for particle physics experiments, such as those at the Large Hadron Collider (LHC). These experiments, in combination with new mathematical tools, help to solve unanswered questions in physics in a much faster way and have a profound impact on our understanding of nature. When studying particle […]
Any particle accelerator needs a reliable electron or ion source as a first, humble but essential and critical component. The world’s most powerful particle accelerator today -the Large Hadron Collider- extracts its protons from a single bottle of Hydrogen gas. Ion sources produce beams for a large variety of different scientific experiments, industrial processes and […]
“Helicene” is the name introduced by Newman in 1955, to describe the benzologues of phenanthrene in which the extra ortho -condensed rings give rise to a (regular) cylindrical helix. The pioneer work of Newman in this field cannot be overemphasized; his brillant synthesis and resolution of [6]helicene will remain as a landmark, for it opened […]
The perception of food occurs when food enters the oral cavity and depends on the action of three complementary sensory systems: somesthesia (a group that includes mechanoreception, thermal sensation and nociception), retronasal olfaction and taste. Taste is one of the five classical senses, along with smell, touch, hearing and sight. One of the most common […]