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Author: engineering

Facebook video adds AV1 support | Engineering Blog | Facebook Code

The recent release of AV1, a new open, royalty-free video format, promises to be an important step forward in compression efficiency. Following our publication of detailed real-world AV1 benchmarking tests, Facebook is now adding trial support for the AV1 format to Facebook video. This allows engineers and the general public to view sample AV1 content today. Browser support for the official AV1 release version is still under development, and encoding speed still lags behind current encoder alternatives, such as x264…

Arrested Chevron workers could face treason charge in Venezuela

Two Chevron Corp. employees detained in Venezuela last week could be charged with treason for refusing to sign a parts contract for a joint venture with state-owned oil company PDVSA, according to two sources familiar with draft charges against the U.S. firm’s executives. The arrests, by national intelligence agents, marked the first at a Western oil firm in Venezuela and represent a dramatic escalation of growing tensions between PDVSA and foreign companies over control of supply contracts, the sources told…

Shell authorizes Vito deepwater project

Royal Dutch Shell said Tuesday it’s authorizing the multibillion-dollar Vito project in the deepwater Gulf of Mexico – the first major Gulf project announced this year. Although the offshore energy sector continues to languish after the recent oil bust, Big Oil players like Shell are now beginning to move forward with big new projects at dramatically reduced prices. While Shell isn’t revealing the project cost, Shell said it has cut the Vito cost estimate by 70 percent from the initial…

Sales picking up for oilfield service groups

Schlumberger, Halliburton, and BHGE have reported a combined 15% growth in revenues for 1Q 2018 compared to the same period last year, according to analyst Rystad Energy. Their oilfield service sales increased by 21% on average, although their oilfield equipment sales were only 1% higher. Audun Martinsen, vice president of Oilfield Service Research at Rystad, said: “With the great surge of activity in short cycle businesses – like US shale and the slower-to-respond equipment market, typically in offshore – this…

Drug fights graft-versus-host-disease in mice — ScienceDaily

An investigational drug in clinical trials for rheumatoid arthritis prevents a common, life-threatening side effect of stem cell transplants, new research from Washington University School of Medicine in St. Louis shows. Studying mice, the researchers found the drug prevented what’s known as graft-versus-host disease, a debilitating, sometimes lethal condition that develops when transplanted stem cells attack the body’s own organs or tissues. About half of patients receiving donor stem cells develop graft-versus-host disease, which can linger for months or years…

BGP leaks and cryptocurrencies

Over the few last hours, a dozen news stories have broken about how an attacker attempted (and perhaps managed) to steal cryptocurrencies using a BGP leak. CC BY 2.0 image by elhombredenegro What is BGP? The Internet is composed of routes. For our DNS resolver 1.1.1.1 , we tell the world that all the IPs in the range 1.1.1.0 to 1.1.1.255 can be accessed at any Cloudflare PoP. For the people who do not have a direct link to our…

Doctors may soon be able to see a brain tumor burned away in real time

Some 80,000 Americans will be diagnosed with a brain tumor this year according to the American Brain Tumor Association. Many of them will need major surgery and chemotherapy. Sixteen thousand of them will lose the battle. But a team of USC Viterbi School of Engineering researchers are now making it easier, faster and safer for doctors to use an emerging procedure – one that involves burning away tumors in more patients, including those with brain tumors. Radiofrequency ablation, or RFA,…

3-D printed food could change how we eat

A: Food materials are pulverized under ultra-low temperature close to -100 degrees Celsius. B: Micro-sized food materials are reconstructed into a porous film-shaped material by jetting bonding an agent under optimized water content and heat conditions. The process to build film-type materials is repeated layer by layer to form to a three-dimensional food block.C: The exterior of foods and internal microstructure of a food block with specific porosity is designed to give texture with controlled human body absorption while eating…

Electrode shape improves neurostimulation for small targets

This small chip holds a 2-D electrode with a shape that can better stimulate small targets in the body over time. Credit: Purdue University image/Kayla Wiles A cross-like shape helps the electrodes of implantable neurostimulation devices to deliver more charge to specific areas of the nervous system, possibly prolonging device life span, says research published in March in Scientific Reports. The shape, called “fractal,” would be particularly useful for stimulating smaller areas, such as deep brain structures or the retina,…

CSS at Scale: LinkedIn’s New Open Source Projects Take on Stylesheet Performance

Example source and output of CSS Blocks. Text content here.  Development of CSS Blocks and OptiCSS Following the realization that selector performance and file size were hurting our site speed, we needed to make progress quickly to alleviate the issue. The team worked hard to establish new best practices, including converting our application to use BEM-style selectors and to prefer shared class names in our templates over mixins in our stylesheets. The choice to adopt BEM was controversial; many developers…