Showing 20 articles starting at article 161

< Previous 20 articles        Next 20 articles >

Categories: Environmental: Water, Physics: Optics

Return to the site home page

     (via sciencedaily.com)     Original source 

During recent periods of unusually warm water in the Gulf of Alaska, young Pacific cod in near shore safe havens where they typically spend their adolescence did not experience the protective effects those areas typically provide, a new study found.

     (via sciencedaily.com)     Original source 

The Supreme Court ruled last year that rivers that only flow in response to weather events -- called ephemeral streams -- do not fall under the protection of the Clean Water Act. New research suggests that this now leaves many U.S. waterways vulnerable to pollution.

     (via sciencedaily.com)     Original source 

Older coastal cities, like Philadelphia, New York and Boston are at risk of being inundated by untreated sewage during floods. Due in part to the design of their combined sewer systems and in part due to sea level rise, these cities could be facing a growing public health crisis as climate change also drives more extreme precipitation. The group recently published research that modeled the potential extent of the problem in a section of the coastal city of Camden, New Jersey, and the effectiveness of one proposed intervention to help protect these communities.

     (via sciencedaily.com)     Original source 

By using carbonated -- rather than still -- water during the concrete manufacturing process, a team of engineers has discovered a new way to store carbon dioxide (CO2) in the ubiquitous construction material.

     (via sciencedaily.com)     Original source 

Researchers are reporting progress on the road to more efficient utilization of solar energy: They have developed an innovative light-harvesting system.

     (via sciencedaily.com)     Original source 

Researchers have directly measured cold, deep water upwelling via turbulent mixing along the slope of a submarine canyon in the Atlantic Ocean.

     (via sciencedaily.com)     Original source 

With a single leap from tabletop to the microscale, engineers have produced the world's first practical Titanium-sapphire laser on a chip, democratizing a once-exclusive technology.

     (via sciencedaily.com)     Original source 

A new study uncovers the remarkable potential of ultrafast lasers that could provide innovative solutions in 2D materials processing for many technology developers such as high-speed photodetectors, flexible electronics, biohybrids, and next-generation solar cells.

     (via sciencedaily.com)     Original source 

A research team has developed a small optical lens, only a few millimeters in size, whose refractive behavior changes in the presence of gas. This 'intelligent' behavior of the micro-lens is enabled by the hybrid glass material from which it is made. The molecular structure of the lens consists of a three-dimensional lattice with cavities that can accommodate gas molecules, thereby affecting the optical properties of the material.

     (via sciencedaily.com)     Original source 

Many municipal landfills 'burp' gas from decomposing organic matter rather than letting it build up. And burps from buried waste containing per- and polyfluoroalkyl substances (PFAS) can release these 'forever chemicals' into the air, say researchers. Their study reports unexpectedly high levels of airborne PFAS at three landfills and demonstrates that vented gases and liquid by-products called leachates could transport similar amounts of these contaminants to the environment.

     (via sciencedaily.com)     Original source 

Clean, safe water is a limited resource and access to it depends on local bodies of water. But even dry regions have some water vapor in the air. To harvest small amounts of humidity, researchers developed a compact device with absorbent-coated fins that first trap moisture and then generate potable water when heated. They say the prototype could help meet growing demands for water, especially in arid locations.

     (via sciencedaily.com)     Original source 

Colossal undersea mountains, towering up to thousands of metres high, stir up deep sea currents: impacting how our ocean stores heat and carbon. An international team used numerical modelling to quantify how underwater turbulence around these mountains, called seamounts, influences ocean circulation; finding it is an important mechanism in ocean mixing and one that is missing from climate models used in policymaking.

     (via sciencedaily.com)     Original source 

With a new microscope that's as light as a penny, researchers can now observe broad swaths of the brain in action as mice move about and interact with their environments.

     (via sciencedaily.com)     Original source 

Researchers have succeeded in directing floating objects around an aquatic obstacle course using only soundwaves. Their novel, optics-inspired method holds great promise for biomedical applications such as noninvasive targeted drug delivery.

     (via sciencedaily.com)     Original source 

Using a novel non-contact approach, a research team has successfully controlled the speed and efficiency of Forster resonance energy transfer between fluorescent molecules by varying the intensity of a laser beam.

     (via sciencedaily.com)     Original source 

A study of 17 commonly used synthetic 'forever chemicals' has shown that these toxic substances can readily be absorbed through human skin.

     (via sciencedaily.com)     Original source 

A doubling of the amount of CO2 in the atmosphere could cause an increase in the average temperature on earth from 7 to even a maximum of 14 degrees. That is shown in the analysis of sediments from the Pacific Ocean off the coast of California.

     (via sciencedaily.com)     Original source 

Green hydrogen often, but certainly not always, leads to CO2 gains.

     (via sciencedaily.com)     Original source 

By 2050, climate change could increase the amount of time women in households without running water spend collecting water by up to 30 percent on global average, according to a new study. In regions of South America and Southeast Asia, the time spent collecting water could double due to higher temperatures. Scientists estimate the large welfare losses that could result from climate impacts and highlights how women are particularly vulnerable to changing future climate conditions.

     (via sciencedaily.com)     Original source 

Researchers have discovered that by shining different wavelengths (colors) of light on a material called magnetite, they can change its state, e.g. making it more or less conducive to electricity. The discovery could lead to new ways of designing new materials for electronics such as memory storage, sensors, and other devices that rely on fast and efficient material responses.