Scientists have developed now a nacre-inspired nanocomposite that combines exceptional mechanical properties with glass-like transparency and a high gas-and fire-barrier.
but also for gas storage applications and food packaging. In addition, it may be used as an advanced substrate and for encapsulation of oxygen-sensitive organic electronics in flexible displays a
Gas sensors or implantable chips for medical applications which can gather information about blood sugar levels
it evaporates and the gas molecules that stick to the perovskite, creating an even layer--much like
because the Tc of 50-60 K achieved in the present study is high enough to keep the superconducting state by using a closed-cycle-gas-type cooling system without liquid helium.
making it possible to maintain the gas's high temperature with less power and reduced operating costs.
magnetic, humidity, gas and sound pressure devices. The first step was to look at fabrication methods. Top-down approaches to graphene device fabrication such as mechanical and chemical exfoliation would not work on a commercial scale,
and is produced easily may lead to better gas separation, water purification, drug delivery and DNA recognition, according to an international team of researchers.
therefore consider hundreds of menopausal women in whom NHANES scientists had measured at least one potential endocrine disruptor chemical (EDC) by gas or liquid chromatography-mass spectroscopy.
#Weighing Gas with Sound and Microwaves NIST scientists have developed a novel method to rapidly and accurately calibrate gas flow meters,
such as those used to measure natural gas flowing in pipelines, by applying a fundamental physical principle:
When a sound wave travels through a gas containing temperature gradients, the sound wave average speed is determined by the average temperature of the gas.
Schematic diagram of a gas-filled pressure vessel. The red-to-blue shading represents the temperature gradient in the gas, with the higher (red) temperatures near the top.
The ovals represent a standing sound wave; its frequency is determined mostly by the average temperature of the gas.
The wavy line represents a resonant electromagnetic wave; its frequency is determined mostly by the length of the tank.
Wavelengths are not to scale. Schematic diagram of a gas-filled pressure vessel. The red-to-blue shading represents the temperature gradient in the gas, with the higher (red) temperatures near the top.
The ovals represent a standing sound wave; its frequency is determined mostly by the average temperature of the gas.
The wavy line represents a resonant electromagnetic wave; its frequency is determined mostly by the length of the tank.
Wavelengths are not to scale. Accurate calibrations of gas flow meters issues are of urgent interest to meter manufacturers and calibration labs, with potential impact throughout the natural gas industry.
Conventional calibrations are conducted typically during measured time intervals by flowing a gas stream through the meter being calibrated.
The quantity of gas that passes through the meter is determined by collecting the gas in a large tank and measuring its average temperature and pressure,
which in turn reveals the amount of gas. However, the process of collecting the gas in large tanks generates temperature gradients (different temperatures in different parts of the tank
which make the average difficult to measure. Those gradients persist for hours or days. Thus a fast reading is inherently inaccurate.
To get around that problem, current practice entails calibrating many small meters, one at a time, and then using them in parallel to calibrate a larger meter.
NIST innovation replaces the difficult problem of accurately measuring the average temperature of a large volume of gas with the easier problem of accurately measuring the average speed-of-sound in the gas.
Finally, they heated the top of the tank to establish a temperature difference across the gas of 4%of the average gas temperature.
%This result implies that the acoustic resonance technique could be used to measure the collected gas, even in the presence of a temperature gradient,
As blood flows through these tiny capillaries oxygen diffuses from the blood into the surrounding tissue supplying them with the essential gas.
Oxygen diffuses from the gas compartment to the microfluidic channel allowing researchers to control how much oxygen cells are exposed to.
With Vindskiptm, he has designed a cargo ship that is powered by wind and gas. Software developed by Fraunhofer researchers will ensure an optimum use of the available wind energy at any time.
It has now been published in ature Communicationshollow Fibre Filled with Gasan infrared laser pulse is sent into a hollow fibre filled with gas.
The nonlinear interaction between the light and the gas atoms in the special fibre makes different wavelengths travel at different velocities.
they focused the pulse onto a target of xenon gas ionizing the xenon atoms. Depending on the exact shape of the laser pulse the electrons ripped away from the xenon atoms can be sent into different directions. t is an ultrafast electron switchsays Tadas Balciunas.
fill it with a useful gas, which is hydrogen. Unlike any of the other currently-available drones that can stay in the air for no more than 20 to 30 minutes at a time
In a clever design feature, the Hycopter stores 120 g of hydrogen gas at 350 bar (5, 075 psi) in its existing structural tubing no separate canister is required.
The lightweight lithium-polymer hybrid fuel cell that converts the hydrogen gas into electricity to power the rotors was developed by a sister company,
and can log a distance of 148 kilometres on a single tank of gas. The one-third scale prototype is controlled remotely
works on growing metal organic frameworks onto cotton samples to create a filtration system capable of capturing toxic gas,
captures harmful gas and weaves transistors into shirts and dresses. otton is one of the most fascinating and misunderstood materials,
can be manipulated at the nano level to build nanoscale cages that are the exact same size as the gas they are trying to capture. e wanted to harness the power of these molecules to absorb gases
However, hydrogen is stored typically as a compressed gas in bulky high pressure tanks and these costly storage problems are a barrier to its use as a transport fuel of the future.
reater understanding of how the nanoscale structure of the storage material can influence gas storage capacities is expected to lead to more accurate evaluation methods for existing porous hydrogen storage materials.
Shift in focus These findings open the door to a shift in focus towards pore design with future research looking to exploit storing high density hydrogen in solid materials, rather than as a liquid or a gas q
such as a gas sensor, an optical switch, and even to reinforce composite materials to make them stronger.
In addition, late last year, it debuted a 6tb hard disk drive that apparently squeezed six 1tb platters without the need of helium gas like HGST-or any other exotic technologies.
The shift comes amid a downturn in the oil and gas industry as a whole: Oil prices are down to about half of their peak of $100-plus a barrel a year ago.
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