limiting their use to waters at least 30 meters deep. The THAWT (Transverse Horizontal Axis Water turbine) technology
by contrast, is designed for deployment in shallower, lower velocity, tidal waters. Developed by Oxford university's Department of Engineering science in conjunction with Kepler Energy,
as the water flows past the fence a head of water is produced that increases the turbine's efficiency.
"Kepler says their design has minimal moving parts in the water, while its generator and other electrical equipment are installed in dry columns,
"The water flows at right angles to the axis of the turbine so, as the turbine turns, lift is generated by these blades,
According to Dixon,"the rotor is suited to lower velocity, shallower waters, which are areas where you can't put conventional axial flow turbines,
and if you make them very big in diameter they're going to stick out of the water.
The developers say the system could be used in waters off France and many Asian countries, such as Japan, China, the Koreas, Indonesia, India,
or a cold glass of water from a hot cup of coffee. This will take time.
Below, the researchers have installed a new type of electrolyte that replaces the lithium-cobalt oxide or lithium iron phosphate of regular battery electrolytes with water."
and by adding the water-based electrolyte. Called an aqueous solar flow battery, this world-first design could be the basis of an entirely new class of batteries,
"This has been replaced with water as the solvent and lithium iodide as the salt, which offers low-cost, high-energy storage capabilities."
when you sprinkle water on your pan to see if it's hot enough to cook with
-if the water droplets skitter across the pan, you're good to go, and that's the Leidenfrost effect in action.
Immediately the water in the acid solution began to break down into hydrogen and oxygen gas.
The researchers initially thought that the drop might be floating on top of the hydrogen gas from the breakup of the water.
which effectively mimics plant-based photosynthesis by using solar energy to convert water into hydrogen. The process,
and oxygen by running an electric current through water, could be used to inexpensively power our homes
and cars in just a few years, say the researchers. lectrochemical splitting of water could provide a cheap,
It an inexpensive metal and it produces a very, very stable action in its water electrolysis cell.
Another innovation is that the Monash system can run on river water, which the researchers say will allow it to be implemented easily in a number of geographic locations.
#This new technology converts sea water into drinking water in minutes Purifying dirty water is a notoriously difficult and expensive process-even in California, financial pressures affect
which is why a newly invented and ultra-cheap water cleaning process is looking so promising.
and their work has now been published in the journal Water Science and Technology.""The technology implemented in the study is much better than reverse osmosis,
a professor of water contamination at Egypt National Research Centre, told Scidev. net.""It can effectively desalinate water with high concentration of salt like that of the Red sea, where desalination costs more and yields less."
"Unfortunately for those who are waiting for this type of technology, a lot of work is required before it can be put into action:
What's certain is that a new procedure like this could have a huge impact on the lives of millions of people-according to Water. org,
Just like water has a gaseous, liquid, and solid state, this magnet material displays physical phase transitions when gradually cooled right down to almost freezing."
and the magnetic arrangement appeared to undergo another change-it was frozen almost, just like water.
She then used these silk-stabilised chemicals to design a paper-based test that requires only a serum sample (the clear part of the blood after the red blood cells have been removed) and water to run.
water is added to the chemicals, so they flow down to the center of the test paper,
when only the corner of it is dipped in water. The chemicals, serum sample, and water then combine in the right order
and timing to give a positive or negative readout for the presence of Ebola proteins.
you can see the addition of the water at specific intervals, and how the chemicals come together to create a positive yellow reading:
This new'thirsty'concrete absorbs 4, 000 litres of water in 60 seconds During the first few weeks of August 2007,
more than two-thirds was caused by water running off pavements or overflowing from drainage systems. So what's the solution?
We need to prevent all that water from accumulating on the surface of our roads and footpaths,
a new type of porous concrete that can absorb up to 4, 000 litres of water in the first 60 seconds,
which water can drain almost instantly. This is followed by an'attenuation layer, 'which feeds the water into a drainage system that connects with the city's groundwater reservoirs.
So don't worry all the water you can see pouring out in the video isn't being wasted-it's being fed straight back into the system for irrigation, drinking water, swimming pools,
and firefighting purposes. While permeable concrete has been around for the past 50 years, it's mostly been used under pavements to help with drainage,
"During periods of rising temperatures and intense rainfall, water stored within the system evaporates creating a cooling effect reducing surface temperatures,
If that water happens to freeze, the entire system would be destroyed, so the concrete can only be used in places where temperatures are never likely to dip that low w
NASA finds evidence of liquid water flowing on the surface of Mars NASA told us it was announcing something big today,
The seasonal rivers of salty water mean there's a greater chance of Mars being able to support life now or in the future.
-while it was suspected that trickling water was the cause, the new evidence means NASA is now almost certain.
and that's the evidence they needed to suggest flowing water is the cause. What's more, they've proved that this activity is still happening today,
the summer months on Mars see a shallow subsurface flow of briny water coming down from the planet's canyons and crater walls.
The next mystery to solve is where exactly this water flow is coming from-it could be bubbling up from underneath the crust,
or it could be created by some kind of condensation process in the atmosphere of Mars."Our quest on Mars has been to'follow the water'in our search for life in the universe,
as it appears to confirm that water -albeit briny-is flowing today on the surface of Mars."Perhaps the biggest potential consequence of the discovery is that visitors to the Red planet could use the water that's hidden away to support themselves
and grow food. If scientists can work out where the water is being stored or formed, then these sites would be prime candidates for landing spots on the first manned mission to the planet."
"Of all the worlds we've explored, water flows only on the surface of one-ours
-which is why the discovery that water is now likely to be regularly flowing across Mars is commented so stunning
Alan Duffy, a Research Fellow at Swinburne University of Technology in Australia.""The brine on Mars might not directly support life
direct air capture works just like these new solar cells that split water into a hydrogen fuel-the CO2 recycling plant extracts CO2 from the air using a giant complex of fans,
and combines this with liquid hydrogen split from water. This mixture can then be converted into solid pellets of calcium carbonate,
#Solar cooling system keeps water at 9 degrees Celsius for up to three months Maintaining food in places where high temperatures prevail,
where she has achieve to maintain water at nine degrees Celsius"with that temperature we can cool food,
the researcher calculates the amount of water to be cooled, thereby knows how many zeolite to use.
A small bottle of nanoparticles suspended in water costs about $250, and contains enough for about 2, 500 tests."
which instantly boils the water layer adjacent to parts of the cell. That creates a bubble that explodes near the cell membrane,
The scientists studied light scattering from a glass cylinder filled with water. In essence such an experiment represents a two-dimensional analog of a classical problem of scattering from a homogeneous sphere (Mie scattering), the solution to
In the study, the scientists used ordinary water whose refractive index can be regulated by changing temperature.
Importantly, the developed technique made it possible to switch from visibility to invisibility regimes at the same frequency of 1. 9 GHZ by simply changing the temperature of the water in the cylinder from 90°C to 50°C."Our theoretical calculations
which plants use the energy in sunlight to synthesize carbohydrates from carbon dioxide and water. However
this new artificial photosynthetic system synthesizes the combination of carbon dioxide and water into acetate, the most common building block today for biosynthesis."We believe our system is a revolutionary leap forward in the field of artificial photosynthesis,
and combined with water for the synthesis of molecular products that form biomass, "says Chris Chang, an expert in catalysts for carbon-neutral energy conversions."
and combined with water for the synthesis of a variety of targeted, value-added chemical products."
while the photo-generated holes in the titanium oxide split water molecules to make oxygen.""Once the forest of nanowire arrays is established,
"We were able to uniformly populate our nanowire array with S. ovata using buffered brackish water with trace vitamins as the only organic component."
We observed that the residual water in the container was pumped to reactor tank, where it received a dosing of the dissociating elements in predetermined amounts.
Subsequently, the water is conducted to a clarifier tank, to sediment the excess charge of dissolved elements;
Also, the Monterrey Institute of technology and Higher education (ITESM), the College of Mexico and the National Polytechnic institute (IPN) have given their validation that the water treated with our technology meets the SSA NOM 127 standard,
consumption and water discharge e
#Tiniest circuits: Light-controlled molecule switching Dr. Artur Erbe, physicist at the HZDR, is convinced that in the future molecular electronics will open the door for novel and increasingly smaller--while also more energy efficient--components or sensors:"
excess water is released which reacts with titanium oxysulfate to form a solid shell of titanium hydroxide with a thickness of 3 to 4 nanometers.
At first, the researchers wanted to explore the limits of the analogy between the boiling phenomenon and water electrolysis,
which is the breakup of water into hydrogen and oxygen gases by an electric current. As an example of boiling behavior
and preventing contact between the liquid water and the pan, a phenomenon called the Leidenfrost effect."
if a similar transition exists in the case of water electrolysis. The analogy interested the authors,
bubbles in the cooling water can suddenly coalesce to form a vapor film that limits further heat transfer
and the water in the hydrochloric acid solution started to break down into hydrogen and oxygen gas.
At first the researchers believed that the drop might be resting on a cushion of hydrogen gas from the breakup of water
but further analysis revealed that the gaseous cushion was in fact mostly water vaporized by energy from the electric current.
Firstly, acetylene is allocated from calcium carbide and water, and secondly, thiol molecules get attached to the acetylene molecules.
The Mexican company Scientific Advice in Water Studies (ACEA) developed an engineering process for the elimination of pests,
This technological innovation is marketed currently in Mexico and Canada by a private company (Empresa Operadora de Granos Almacenados SA de CV) through a contract and confidentiality agreement with Scientific Advice in Water
which can be dissolved in water The pomegranate is a fruit rich in antioxidants, with antihypertensive properties and is proven to help reduce levels of glucose in the blood;
The method consists in converting the natural pomegranate juice in small dust particles that can be dissolved in water.
capsules or powders that can be added to the water. We hope to get the patent later this year
or water to change shape, making the machines slow, bulky and difficult to untether. A team of researchers at the Harvard John A. Paulson School of engineering and Applied science (SEAS) has engineered a new, soft actuator that harnesses the power of instability to trigger instantaneous movement.
and inflating 36 individual segments with water, and measuring how they responded. Then, using a complex computer algorithm,
For example, 1 ml. of water triggered a snap-through instability that resulted in an internal volume flow of 20 ml."
when submerged in water. The valleys in the surface roughness typically need to be less than one micron in width, the researchers found.
Understanding how the surfaces deflect water so well means the valuable feature could be reproduced in other materials on a mass scale, potentially saving billions of dollars in a variety of industries,
just like a drop of water evaporates without having to boil it. These gas pockets deflect water, keeping the surface dry,
"he said. In a study published today (Aug 18) by the journal Scientific Reports, Patankar and his co-authors explain
and without the key surface roughness and submerged them in water. Samples with the nanoscale roughness remained dry for up to four months
In this work, we looked for properties that manipulate the water phase changes we know.""The researchers also report that nature uses the same strategy of surface roughness in certain aquatic insects, such as water bugs and water striders.
When submerged, water tends to cling to the top of the spikes, while air and water vapor accrue in the pores between them.
which can cause water to wet the surface. But the Northwestern team found the molecular key:
a cost-effective method of producing fuels using only sunlight, water, and carbon dioxide, mimicking the natural process of photosynthesis in plants
safe, integrated solar-driven system for splitting water to create hydrogen fuels.""This result was a stretch project milestone for the entire five years of JCAP as a whole,
The photoanode uses sunlight to oxidize water molecules, generating protons and electrons as well as oxygen gas.
when exposed to water, so cannot be used to directly generate fuel. A major advance that allowed the integrated system to be developed was previous work in Lewis's laboratory,
The photoanode requires a catalyst to drive the essential water-splitting reaction. Rare and expensive metals such as platinum can serve as effective catalysts,
This catalyst is among the most active known catalysts for splitting water molecules into oxygen
to create a fully integrated single material that serves as a complete solar-driven water-splitting system.
#An engineered surface unsticks sticky water droplets The lotus effect has inspired many types of liquid repelling surfaces,
but tiny water droplets stick to lotus leaf structures. Now, researchers at Penn State have developed the first nano/micro-textured highly slippery surfaces able to outperform lotus leaf-inspired liquid repellent coatings,
particularly in situations where the water is in the form of vapor or tiny droplets.
Enhancing the mobility of liquid droplets on rough surfaces has applications ranging from condensation heat transfer for heat exchangers in power plants to more efficient water harvesting in arid regions where collecting fog droplets on coated meshes provides drinking water
The sticky Wenzel state results in many problems in condensation heat transfer, water harvesting and ice removal.
#Skimming uranium from the sea Researchers developed a protein-based, genetically encodable system that can bind water-soluble uranium with exceedingly high affinity and selectivity.
The overall method developed could find broad applications in sequestration and bioremediation of water-soluble uranium and similar transuranic elements.
but unfortunately, the uranium in the ocean is in the form of water-soluble uranyl (UO22)
#Super water-repellant coatings can now take the pressure Conventional superhydrophobic coatings that repel liquids by trapping air inside microscopic surface pockets tend to lose their properties
In this work, extremely water-repellant or superhydrophobic surfaces were fabricated that can withstand pressures that are 10 times greater than the average pressure a surface would experience resting in a room.
a type of solar power based on the ability of plants to transform sunlight, carbon dioxide and water into sugars.
especially the catalysts that convert water and carbon dioxide into sugars at room temperatures.""This is not about mimicking nature directly
a type of solar power based on the ability of plants to transform sunlight, carbon dioxide and water into sugars.
especially the catalysts that convert water and carbon dioxide into sugars at room temperatures.""This is not about mimicking nature directly
To achieve this, the researchers reacted glycerol with water, to provide the element hydrogen, and a magnesium oxide (Mgo) catalyst.
and water over such a simple catalyst gave such valuable products and interesting chemistry.""This research has the potential to transform the way in
"Key to the method developed by Mooney's team is the combination of two water-filled hydrogels with very different properties.
makes water more efficient for cleaning by creating tiny bubbles which automatically scrub surfaces. The device supplies a gentle stream of water through a nozzle that generates ultrasound and bubbles,
which dramatically improve the cleaning power of water reducing the need for additives and heating.
Using just cold water, Starstream was able to remove biological contamination, including brain tissue from surgical steel. Cleaning instruments between patients is critical to avoid transmission of agents leading to conditions such as Creutzfeldt-jakob disease.
#Tiny magnets mimic steam, water and ice Researchers at the Paul Scherrer Institute (PSI) created a synthetic material out of 1 billion tiny magnets.
just like water has a gaseous, liquid and a solid state. This material made of nanomagnets might well be refined for electronic applications of the future--such as for more efficient information transfer.
the so-called metamaterial exhibits phase transitions, much like those between steam, water and ice. This effect was observed by a team of researchers headed by Laura Heyderman from PSI."
The long-range order of water molecules increases in a similar way at the moment when water freezes into ice.""We were fascinated by the fact that our synthetic material displayed this everyday phenomenon of a phase transition,
The cooling comes from simple deionized water flowing through microfluidic passages that replace the massive air-cooled heat sinks normally placed on the backs of chips."
and ports were attached for the connection of water tubes. In multiple tests--including a demonstration for DARPA officials in Arlington,
With a water inlet temperature of approximately 20 degrees Celsius and an inlet flow rate of 147 milliliters per minute
or ions in solution, are surrounded by a shell of water molecules that stick to the ion,
and other electrically conducting materials to be added to conventional water-based inks and printed using typical commercial equipment,
which is added to conductive water-based ink formulations. The ratio of the ingredients can be adjusted to control the liquid's properties,
allowing the carrier solvent to be mixed easily into a conventional conductive water-based ink to significantly reduce the resistance.
and reach subterranean waters by accident or as a result of improper waste disposal. Once in the aquifers, they can build up for years because of their low biodegradability,
When light passes through water, for example, its phase velocity is reduced as its wavelengths get squished together.
Once it exits the water, its phase velocity increases again as its wavelength elongates. How much the crests of a light wave slow down in a material is expressed as a ratio called the refraction index--the higher the index,
Water, for example, has a refraction index of about 1. 3 . When the refraction index is reduced to zero,
like an ice cube does to water. Next, the crystal drug is placed into a fat and protein coat, similar to
The compound is repelled by water at neutral ph which allows it to easily diffuse through cellular and nuclear membranes,
The team gathered water samples from a research site on the Colorado river near the town of Rifle
Before doing any sequencing, they passed the water through a pair of increasingly fine filtersith pores 0. 2 and 0. 1 microns wide
like the one from the water samples in Rifle, scientists use substances called primers to draw out
#"Drinkable book"turns dirty water clean for a thirsty world A group of researchers from the US,
and purify water. During her Phd at Mcgill University, Dankovich successfully created a page made from cellulose,
One page could theoretically filter one person water for up to four years Dankovich says. Stuart Kahn from the University of New south wales, Australia, who was involved not in the research,
and the water is safe to drink. ny efforts to provide clean safe drinking water to communities for which it is lacking,
safe light source powered by salt and water, which can last for up to six months when used for eight hours a day.
Users simply add one glass of water and one tablespoon of salt saltwater from the ocean can also be used to power the device.
and resistant to oil, gasoline and glycol in the cooling water. It must also demonstrate good adherence to the metal inserts
nmanned systems in the air and water will employ greater autonomy and be integrated fully with their manned counterparts. a
which plants use the energy in sunlight to synthesize carbohydrates from carbon dioxide and water. However
this new artificial photosynthetic system synthesizes the combination of carbon dioxide and water into acetate, the most common building block today for biosynthesis. e believe our system is a revolutionary leap forward in the field of artificial photosynthesis,
and combined with water for the synthesis of molecular products that form biomass, says Chris Chang, an expert in catalysts for carbon-neutral energy conversions. n our system,
and combined with water for the synthesis of a variety of targeted, value-added chemical products.
while the photo-generated holes in the titanium oxide split water molecules to make oxygen. Once the forest of nanowire arrays is established,
says Michelle Chang. e were able to uniformly populate our nanowire array with S. ovata using buffered brackish water with trace vitamins as the only organic component.
or water resistance. his is like going from building boats only out of wood, to the ability to build boats out of almost any kind of material,
This light bounces off air molecules and small particles such as dust, ice and droplets of water in the atmosphere.
In a still bath the beads follow wavering trajectories as the thermal motion of water molecules buffets them from all sides.
The sensors, on the other hand, have to be resistant to water and detergent. he first washability tests are in planning,
When floated on water the particles form a sheet; when the water evaporates, it leaves the sheet suspended over a hole. t almost like a drumhead,
says Xiao-Min Lin, the staff scientist at the Center for Nanoscale Materials who led the project. ut it a very thin membrane made of a single layer of nanoparticles. rgonne researchers are able to fold gold nanoparticle membranes in a specific
when floated on water they try to avoid contact with it, so they end up distributing themselves in a nonuniform way across the top and bottom layers of the nanoparticle sheet.
ou use one type of molecule that hates water and rely on the water surfaces to drive the molecules to distribute non-uniformly,
or you could use two different kinds of molecules. The key is that the molecules have to distribute non-uniformly. he next step for Lin
#Scientists pioneer method to track water flowing through glaciers Researchers for the first time have used seismic sensors to track meltwater flowing through glaciers and into the ocean,
The water can speed the glacier flow downhill toward the sea; it can move rocks, boulders and other sediments toward the terminus of the glacier along its base;
if you stir that water, said Timothy Bartholomaus, a postdoctoral fellow at UTIG and the study lead author. ubglacial discharge provides that stirring. he new technique offers scientists a tool for tracking meltwater at glaciers that end in the ocean, called tidewater glaciers.
but it will take more research to determine exactly how much water is flowing out. ow that we know
These adaptations allow biological organisms to survive in a wide variety of different environments allowing animals to make the move from living in the water to living on land, for instance.
Velten says. here is potential for the discovery of water or other trapped volatiles under the surface.
Diffusion MRI measures the movement of water molecules to create a visual representation of the brain axons.
which provided a picture of the orientation of moving water molecules. And, multi-shell imaging was used on 78 healthy adults to get similar images using different imaging parameters.
The researchers also found that by looking at the general patterns of water movement in the basal ganglia,
#An engineered surface unsticks sticky water droplets The leaves of the lotus flower, and other natural surfaces that repel water
and dirt, have been the model for many types of engineered liquid-repelling surfaces. As slippery as these surfaces are,
however, tiny water droplets still stick to them. Now, Penn State researchers have developed nano/micro-textured, highly slippery surfaces able to outperform these naturally inspired coatings,
particularly when the water is a vapor or tiny droplets. Enhancing the mobility of liquid droplets on rough surfaces could improve condensation heat transfer for power-plant heat exchangers
create more efficient water harvesting in arid regions, and prevent icing and frosting on aircraft wings. his represents a fundamentally new concept in engineered surfaces,
The sticky Wenzel state results in many problems in condensation heat transfer, water harvesting and ice removal.
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