Harvard scientists are taking a hard look at northeastern forests for evidence of a potential springtime scramble, one that could be triggered if age-old growth cues are disrupted by climate change.
MIT-led team develops method for scaling up production of thin electronic material.
A cell’s life is a noisy affair. These building blocks of life are constantly changing. They can spontaneously express different proteins and genes, change shape and size, die or resist dying or become damaged and cancerous. Even within a population of the same type of cell, there is immense random variability between cells’ structures, levels of protein expression and sizes.
We don’t know if a sperm actually experiences joy when it finally finds the egg, but it does wiggle excitedly. Patricia A. Martin-DeLeon, a reproductive biologist at the Univ. of Delaware, has witnessed this behavior many times in her studies of fertility in mice, the closest genetic model to humans (and with a much faster reproductive cycle).
Researchers at Aalto Univ. and VTT Technical Research Centre of Finland have succeeded in developing a method which helps to improve the relative uncertainty in measuring the luminous efficacy of LEDs from the approximate five percent of today to one per cent in the future.
A team of scientists from the Max Planck Institute for Polymer Research (MPI-P) in Mainz, Germany, and FOM Institute AMOLF in the Netherlands have characterized the local structural dynamics of liquid water, for example, how quickly water molecules change their binding state. Using innovative ultrafast vibrational spectroscopies, the researchers show why liquid water is so unique compared to other molecular liquids.
Researchers from North Carolina State Univ. utilized a highly sensitive mass spectrometry analysis to identify and measure difficult-to-detect N-glycan biomarkers associated with ovarian cancers in stages I – IV. In a surprising finding, the researchers determined that the level of biomarkers associated with ovarian cancer does not simply increase or decrease over the course of the disease, but can rise and fall during different stages.
A team of physicists has defied conventional wisdom by inducing stable ferroelectricity in a sheet of strontium titanate only a few nanometers thick. The discovery could open new pathways to find new materials for nanotechnology devices, said Alexei Gruverman, a Univ. of Nebraska-Lincoln physics and astronomy professor who worked on the research.
Scientists at Los Alamos National Laboratory have created a computational model that could change the way that researchers look at possibilities for an HIV-1 vaccine.
Invisibility cloaks are a staple of science fiction and fantasy, from Star Trek to Harry Potter, but don’t exist in real life, or do they? Scientists have devised an ultra-thin invisibility “skin” cloak that can conform to the shape of an object and conceal it from detection with visible light.
Clinical trials of new drugs or devices face a problem that most empirical inquiries don’t: They must not only provide clear data about toxicity and efficacy but also try to maximize the quality of treatment for all of the patients enrolled. Online advertisers face a similar quandary. They want to test variants of ads to see which drive more traffic, but they also want the better-performing ads to reach more viewers.
Single atoms or molecules imprisoned by laser light in a doughnut-shaped metal cage could unlock the key to advanced storage devices, computers and high-resolution instruments. In a paper published in Physical Review A, a team describes conceptually how physicists may be able to exploit a molecule's energy to advance a number of fields.
Good communication is crucial to any relationship, especially when partners are separated by distance. This also holds true for microbes in the deep sea that need to work together to consume large amounts of methane released from vents on the ocean floor.
Every high school biology class learns about the tiny cells that comprise our bodies, as well as about many of the diverse actions that they perform. One of these actions is called mitosis, the series of steps through which a cell divides itself into two daughter cells, each of which has the same genetic material.
The smallest of electronics could one day have the ability to turn on and off at an atomic scale. Lawrence Livermore National Laboratory scientists have investigated a way to create linear chains of carbon atoms from laser-melted graphite. The material, called carbyne, could have a number of novel properties, including the ability to adjust the amount of electrical current traveling through a circuit, depending on the user’s needs.