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‘No mean feat’ – Stage-win aim for Laurence Pithie at Giro d’Italia debut – Cyclingnews

Laurence Pithie may be only taking on his very first Grand Tour when he lines up in Turin on Saturday to debut at the Giro d’Italia, however such has been the meteoric rise of the Groupama-FDJ rider that he will be doing it with big aims and the support of his team.

The 21-year-old New Zealander, who can hold on through the hills and deliver a fast finish, has already capitalised on his strengths to capture one WorldTour win this season, the Cadel Evans Great Ocean Road Race, and after regularly clinging on to key moves in the Classics he is now looking to taste victory again in Italy.

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Researchers develop a detector for continuously monitoring toxic gases – MIT News

Most systems used to detect toxic gases in industrial or domestic settings can be used only once, or at best a few times. Now, researchers at MIT have developed a detector that could provide continuous monitoring for the presence of these gases, at low cost.

The new system combines two existing technologies, bringing them together in a way that preserves the advantages of each while avoiding their limitations. The team used a material called a metal-organic framework, or MOF, which is highly sensitive to tiny traces of gas but whose performance quickly degrades, and combined it with a polymer material that is highly durable and easier to process, but much less sensitive.

The results are reported today in the journal Advanced Materials, in a paper by MIT professors Aristide Gumyusenge, Mircea Dinca, Heather Kulik, and Jesus del Alamo, graduate student Heejung Roh, and postdocs Dong-Ha Kim, Yeongsu Cho, and Young-Moo Jo.

Highly porous and with large surface areas, MOFs come in a variety of compositions. Some can be insulators, but the ones used for this work are highly electrically conductive. With their sponge-like form, they are effective at capturing molecules of various gases, and the sizes of their pores can be tailored to make them selective for particular kinds of gases. “If you are using them as a sensor, you can recognize if the gas is there if it has an effect on the resistivity of the MOF,” says Gumyusenge, the paper’s senior author and the Merton C. Flemings Career Development Assistant Professor of Materials Science and Engineering.

The drawback for these materials’ use as detectors for gases is that they readily become saturated, and then can no longer detect and quantify new inputs. “That’s not what you want. You want to be able to detect and reuse,” Gumyusenge says. “So, we decided to use a polymer composite to achieve this reversibility.”

The team used a class of conductive polymers that Gumyusenge and his co-workers had previously shown can respond to gases without permanently binding to them. “The polymer, even though it doesn’t have the high surface area that the MOFs do, will at least provide this recognize-and-release type of phenomenon,” he says.

The team combined the polymers in a liquid solution along with the MOF material in powdered form, and deposited the mixture on a substrate, where they dry into a uniform, thin coating. By combining the polymer, with its quick detection capability, and the more sensitive MOFs, in a one-to-one ratio, he says, “suddenly we get a sensor that has both the high sensitivity we get from the MOF and the reversibility that is enabled by the presence of the polymer.”

The material changes its electrical resistance when molecules of the gas are temporarily trapped in the material. These changes in resistance can be continuously monitored by simply attaching an ohmmeter to track the resistance over time. Gumyusenge and his students demonstrated the composite material’s ability to detect nitrogen dioxide, a toxic gas produced by many kinds of combustion, in a small lab-scale device. After 100 cycles of detection, the material was still maintaining its baseline performance within a margin of about 5 to 10 percent, demonstrating its long-term use potential.

In addition, this material has far greater sensitivity than most presently used detectors for nitrogen dioxide, the team reports. This gas is often detected after the use of stove ovens. And, with this gas recently linked to many asthma cases in the U.S., reliable detection in low concentrations is important. The team demonstrated that this new composite could detect, reversibly, the gas at concentrations as low as 2 parts per million.

While their demonstration was specifically aimed at nitrogen dioxide, Gumyusenge says, “we can definitely tailor the chemistry to target other volatile molecules,” as long as they are small polar analytes, “which tend to be most of the toxic gases.”

Besides being compatible with a simple hand-held detector or a smoke-alarm type of device, one advantage of the material is that the polymer allows it to be deposited as an extremely thin uniform film, unlike regular MOFs, which are generally in an inefficient powder form. Because the films are so thin, there is little material needed and production material costs could be low; the processing methods could be typical of those used for industrial coating processes. “So, maybe the limiting factor will be scaling up the synthesis of the polymers, which we’ve been synthesizing in small amounts,” Gumyusenge says.

“The next steps will be to evaluate these in real-life settings,” he says. For example, the material could be applied as a coating on chimneys or exhaust pipes to continuously monitor gases through readings from an attached resistance monitoring device. In such settings, he says, “we need tests to check if we truly differentiate it from other potential contaminants that we might have overlooked in the lab setting. Let’s put the sensors out in real-world scenarios and see how they do.”

The work was supported by the MIT Climate and Sustainability Consortium (MCSC), the Abdul Latif Jameel Water and Food Systems Lab (J-WAFS) at MIT, and the U.S. Department of Energy.

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NASA, ESA Formalize Expanded Cooperation on ESA’s Mars Rover – SpacePolicyOnline.com

NASA and the European Space Agency signed an agreement today formalizing NASA’s expanded role in ESA’s Rosalind Frankin Mars rover program, part of what was once the European-Russian ExoMars project. ESA terminated its cooperation with Russia on ExoMars immediately after Russia invaded Ukraine. NASA already was contributing a scientific instrument and now will replace Russia in providing radioisotope heating units, part of the propulsion system for landing, and launch.

Nicky Fox, the head of NASA’s Science Mission Directorate, and her ESA counterpart Daniel Neuenschwander signed the agreement at ESA headquarters in Paris today.

NASA’s Associate Administrator for the Science Mission Directorate Nicky Fox and ESA’s Director of Human and Robotic Exploration Daniel Neuenschwander sign an agreement on the Rosalind Franklin mission at ESA’s headquarters in Paris, France on May 16, 2024. Credits: ESA/Damien Dos Santos

Named after the British scientist who contributed to the discovery of the molecular structure of DNA, Rosalind Frankin will be Europe’s first rover on Mars.

The rover is the second half of the ExoMars program that was a partnership between ESA and Russia’s space agency Roscosmos. The first half was the ExoMars Trace Gas Orbiter (TGO) that entered orbit around Mars in 2016 and continues to operate today. In addition to scientific instruments to study the martian atmosphere and a communications system to relay signals between the surface and Earth, ExoMars TGO carried an experimental European lander, Schiaparelli. Unfortunately it did not survive the landing.

Ironically, ESA and Russia ended up as partners on ExoMars because NASA withdrew in 2012 due to budget constraints. Russia stepped in to fill NASA’s shoes. Now NASA is replacing Russia as ESA’s partner for the second part of the program.

Russia built the lander to deliver the Rosalind Frankin rover to the surface and was also to provide radioisotope heating units to keep it warm as well as launch on a Proton rocket. Today’s announcement said NASA now will would provide the heating units, “elements of the propulsion system needed to land on Mars,” and launch. The launch vehicle was not specified.

ExoMars stands for “Exobiology on Mars” and the rover will be the first to use a drill capable of penetrating 2 meters (6.6 feet) into the surface to search for signs of ancient life. The rover also has a ground penetrating radar that can see 3 meters (9.8 feet) underground and other scientific instruments. One is the Mars Organic Molecular Analyzer (MOMA) developed by NASA in partnership with the French and German space agencies.

The launch originally was supposed to take place in 2020, but slipped to September 2022.  On February 24, 2022, the day Russia invaded Ukraine, the lander and rover were integrated together in Turin, Italy about to be shipped to the launch site in Baikonur, Kazakhstan.

ESA immediately ended or suspended its cooperation with Russia across a range of space activities, including ExoMars. The lander/rover remained in Turin.

ESA turned to NASA for help. The two agencies are long-standing partners on both science and human spaceflight missions.

Although their Mars cooperation fell apart in 2012, NASA and ESA already had decided to team up again for the Mars Sample Return (MSR) mission to bring samples of Mars back to Earth. In 2022, NASA’s science budget was growing and NASA clearly wanted to help get Rosalind Franklin to Mars in addition to proceeding with MSR.

The outlook was favorable at the time, but the budget turmoil that began last year has put the $11 billion MSR mission in peril. For now, the two agencies seem focused on Rosalind Franklin, which is much further along in development and will cost U.S. taxpayers a comparatively modest $305 million over the next four years until launch in 2028.

Source: NASA FY2025 budget request documentation.

Whether Congress will appropriate that funding remains to be seen. With the strains on NASA’s budget, nothing can be taken for granted.

Today, however, the two space agencies showed their commitment to launching the rover in 2028. In a statement, Fox said: “The Rosalind Franklin rover’s unique drilling capabilities and onboard samples laboratory have outstanding scientific value for humanity’s search for evidence of past life on Mars.”

She added that NASA supports “the strong partnership between the United States and Europe to explore the unknown in our solar system and beyond.” That sentiment harkens back to the early days of the Biden Administration when NASA’s Perseverance rover landed on Mars.

Perseverance is the first part of MSR, collecting the samples that will be returned to Earth. One of the instruments onboard is France’s SuperCam that’s analyzing the chemisty and mineralogy of rocks and soil. Perseverance landed shortly after Biden took office and he praised U.S./European Mars exploration as an example of how internatonal space cooperation will “secure our futures together.”

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Oppo Reno12 and Reno12 Pro official images leak showing all colors – GSMArena.com news – GSMArena.com

Yesterday, Oppo announced the official launch date for the Reno12 and Reno12 Pro smartphones – May 23. And also yesterday, the company posted some teasers that revealed the duo’s back design.

Today the legendary @evleaks (aka Evan Blass) brings us leaked official images for both phones, in all of the colors they will be offered in. So, here’s the Oppo Reno 12 first.

Oppo Reno12 leaked official images
Oppo Reno12 leaked official images
Oppo Reno12 leaked official images

Oppo Reno12 leaked official images

And below, you can see the Reno12 Pro as well. The design of the two devices is incredibly similar, especially for the blackish versions and the gray/silver/purplish ones, the only colorway that’s more different is the peach/beige/pink/gold one.

Oppo Reno12 Pro leaked official images
Oppo Reno12 Pro leaked official images
Oppo Reno12 Pro leaked official images

Oppo Reno12 Pro leaked official images

Additionally, a new “Design teaser” video has been outed showing highlights from the two models, here it is:

[embedded content]

You want some live hands-on images too? Well, here you go then:

Oppo Reno12 series live hands-on images
Oppo Reno12 series live hands-on images
Oppo Reno12 series live hands-on images
Oppo Reno12 series live hands-on images
Oppo Reno12 series live hands-on images

Oppo Reno12 series live hands-on images

The Reno12 is expected to sport the just-unveiled Dimensity 8250 chipset, while the Pro is rumored to go with the Dimensity 9200+. Speaking of the Pro, expect this one to have a 6.7-inch “1.5K” screen, a 5,000 mAh battery with 80W wired charging, three rear cameras (50 MP main, 50 MP 2x telephoto, ultrawide), and a 50 MP selfie snapper.

Source 1 | Source 2 (in Chinese) | Via

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