s.s. nautilus
slashdot le : 21/01/2022 12:00:28
A first-of-its-kind "green" Shell facility in Alberta is emitting more greenhouse gases than it's capturing, throwing into question whether taxpayers should be funding it, a new report has found. Motherboard reports: Shell's Quest carbon capture and storage facility in the Alberta tarsands captured 5 million tonnes of carbon dioxide at its hydrogen-producing plant in its Scotford complex between 2015 and 2019. But a new report from human rights organization Global Witness found the hydrogen plant emitted 7.5 million tons of greenhouse gases in the same timeframe -- including methane, which has 80 times the warming power of carbon during its first 20 years in the atmosphere, and accounts for about a quarter of man-made warming today. To put that in perspective, the "climate-forward" part of the Scotford plant alone has the same carbon footprint per year as 1.2 million fuel-powered cars, Global Witness said.

"We do think Shell is misleading the public in that sense and only giving us one side of the story," said Dominic Eagleton, who wrote the report. He said industry's been pushing for governments to subsidize the production of fossil hydrogen (hydrogen produced from natural gas) that's supplemented with carbon capture technology as a "climate-friendly" way forward, but the new report shows that's not the case. In an email, Shell said the facility was introduced to display the merits of carbon capture technology, but didn't directly respond to the allegation that its hydrogen component emitted 7.5 million tons of greenhouse gases.



slashdot le : 12/01/2022 02:00:21
An anonymous reader quotes a report from Gizmodo: A team of researchers at France's Research Institute of Computer Science and Random Systems created an anti-malware system centered around a Raspberry Pi that scans devices for electromagnetic waves. As reported by Tom's Hardware, the security device uses an oscilloscope (Picoscope 6407) and H-Field probe connected to a Raspberry Pi 2B to pick up abnormalities in specific electromagnetic waves emitted by computers that are under attack, a technique the researchers say is used to "obtain precise knowledge about malware type and identity."

The detection system then relies on Convolution Neural Networks (CNN) to determine whether the data gathered indicates the presence of a threat. Using this technique, researchers claims they could record 100,000 measurement traces from IoT devices infected by genuine malware samples, and predicted three generic and one benign malware class with an accuracy as high as 99.82%. Best of all, no software is needed and the device you're scanning doesn't need to be manipulated in any way. As such, bad actors won't be successful with their attempts to conceal malicious code from malware detection software using obfuscation techniques. "Our method does not require any modification on the target device. Thus, it can be deployed independently from the resources available without any overhead. Moreover, our approach has the advantage that it can hardly be detected and evaded by the malware authors," researchers wrote in the paper.



slashdot le : 04/01/2022 15:00:24
An anonymous reader quotes a report from New Atlas: A new COVID-19 vaccine, developed by researchers from the Texas Children's Hospital and Baylor College of Medicine, is being offered patent-free to vaccine manufacturers across the world. Human trials have shown the vaccine to be safe and effective, with India already authorizing its use as production ramps up to over 100 million doses per month. The vaccine has been named Corbevax and it is based on a traditional protein-based technology that has been safely used for decades. Like other COVID-19 vaccines, Corbevax focuses on the coronavirus spike protein, but instead of using mRNA to direct our cells to produce those spike proteins internally it delivers lab-grown spike proteins to the body. The researchers took the gene that codes for the spike protein and engineered yeast to produce it. These proteins are collected, purified, and combined with an adjuvant to enhance immune responses. This exact method has been used to produce the hepatitis B vaccine for years.

In late 2020 the US research team developing the vaccine joined forces with India-based pharma company Biological E to begin clinical trials and establish manufacturing capacity. Across 2021 those clinical trials included several thousand participants and ultimately found Corbevax to be safe and effective at generating robust immune responses to SARS-CoV-2. The trial data was compared to an already approved vaccine called Covishield (the Indian-made version of Astrazeneca's well-known COVID-19 vaccine). Corbevax generated significantly fewer adverse effects than Covishield and produced superior immune responses. Neutralizing antibody responses to Corbevax indicate the vaccine should be at least 80 percent effective at preventing symptomatic COVID-19 from the Delta variant. Specific data against the Omicron variant is expected soon but it is hypothesized to be at least as effective as most currently available vaccines. Perhaps the most important feature of this new vaccine is the fact it has been developed as a patent-free product that can be easily manufactured by vaccine-producers around the world.
The project has been described as "gift to the world" by researcher Peter Hotez. "India is the first country to issue emergency authorization to Corbevax and Biological E reportedly has 150 million doses ready to go, with production capacity set for 100 million doses per month from February," reports New Atlas.


slashdot le : 04/01/2022 00:02:00
"On Tuesday morning, all five layers of the James Webb Space Telescope were fully locked into place," writes Slashdot reader quonset. The BBC reports: There were many who doubted the wisdom of a design that included so many motors, gears, pulleys and cables. But years of testing on full-scale and sub-scale models paid dividends as controllers first separated the shield's different layers and then tensioned them. The fifth and final membrane was locked into place at 16:58 GMT. "The unfurling and securing of the sun shield is part of what NASA refers to as '29 days on the edge,' writes quonset, citing an article from CNN. "During the 29 days, Webb will set up shop, unfurling its giant gold mirror and the protective tennis court-size sunshield. This process involves thousands of parts that must function harmoniously, in the right sequence. Fortunately, each step can be controlled from the ground in case there are issues."

"The next step is the unboxing of the mirror which had to be folded to fit inside the nose cone of the rocket for launch. If all goes well, by the end of the weekend, the mirror will be in place and ready for testing before full operations begin."


slashdot le : 29/12/2021 22:00:27
The James Webb Space Telescope should be able to remain in orbit for more than 10 years, thanks to a fuel-efficient launch on Christmas Day, according to NASA. From a report: The telescope was carried aboard the Arianespace Ariane 5. Despite two brief midcourse corrections, its launch used less propellant than initially expected. That will allow the $10 billion observatory "science operations in orbit for significantly more than a 10-year science lifetime," the US space agency said in a release on Wednesday The first midcourse correction was a relatively minor, 65-minute post-launch burn, which bumped up the telescope's speed by approximately 45 miles per hour. Another smaller correction on Dec. 27 added an additional 6.3 mph. That added boost also allowed the JWST's solar array to unfold about a minute and a half after it separated from the Ariane 5, just 29 minutes after launch. The array was coded to automatically deploy either when the observatory reached a certain altitude or 33 minutes after launch, whichever came first.