Many millions of homeowners use feeders to attract birds. But a two-year study featured in the journal Invasive Plant Science and Management suggests there may be one unintended consequence to this popular hobby. Bird feed ...
Plants & Animals
Mar 20, 2020
0
14
Optical gain is a prerequisite for signal amplification in an optical amplifier or laser. It typically requires high levels of current injection in conventional semiconductors. By exploring an intricate balance and conversion ...
Optics & Photonics
Mar 20, 2020
0
4
An artifact-free computational approach to extract the phase of light from noisy intensity signals improves imaging of transparent objects, such as biological cells, under low light conditions. The procedure separates intensity ...
Optics & Photonics
Mar 20, 2020
0
10
As the coronavirus continues to spread around the world, it is abundantly clear that the global economy is entering a recession – the first we've seen since 2008.
Economics & Business
Mar 20, 2020
0
19
Semiconductor nanowire lasers are a crucial component for on-chip integrated optoelectronics. However, silicon-integrated, room-temperature, continuously-operating and electrically-pumped nanowire lasers have not yet been ...
Optics & Photonics
Mar 20, 2020
0
3
Despite considerable effort, and some wonderful success stories, it is widely acknowledged that global conservation targets to reverse declines in biodiversity and halt species extinctions by 2020 will not be met.
Plants & Animals
Mar 20, 2020
0
18
Finding a species that's entirely new to science is always exciting, and so we were delighted to be a part of the discovery of two new sixgill sawsharks (called Pliotrema kajae and Pliotrema annae) off the coast of East Africa.
Plants & Animals
Mar 20, 2020
0
31
Since most autonomous underwater vehicles must carry their own energy when working under water, variable methods are usually adopted to improve endurance, such as low-power electronic equipment, efficient propulsion method ...
Materials Science
Mar 20, 2020
0
5
Earth's land is covered by a range of different types of vegetation, from forest and marsh to crops and bodies of water, as well as the artificial surfaces that are an increasingly common feature of our landscape.
Environment
Mar 20, 2020
0
4
Scientists at TU Dresden and Hasselt University in Belgium investigated the physical causes that limit the efficiency of novel solar cells based on organic molecular materials. Currently, the voltage of such cells is still ...
Materials Science
Mar 20, 2020
0
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