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Engineering News

PET myocardial perfusion imaging more effective than SPECT scans in detecting coronary disease — ScienceDaily

Patients who receive cardiac positron emission testing (PET) imaging instead of single photon emission computed tomography (SPECT) scan experienced a significant increase in the detection of severe obstructive coronary artery disease, according to researchers at the Intermountain Medical Center Heart Institute in Salt Lake City. Both, PET and SPECT scans are nuclear imaging techniques that provide metabolic and functional information of the heart. PET scans provide better image resolution and quality, but have not yet gotten widespread adaptation compared to…

Eni and ADNOC to sign deal on Sunday

Eni and state oil giant Abu Dhabi National Oil Co (ADNOC) are expected to sign a deal on Sunday, the Italian government and a source said. A statement from the Italian prime minister’s office said a signing ceremony was scheduled to take place after premier Paolo Gentiloni meets Abu Dhabi Crown Prince Sheikh Mohammed bin Zayed al-Nahyan at the Emirates Palace on Sunday afternoon.     It gave no details of the agreement between Eni and ADNOC. Eni will sign…

Premier may defer closure of Balmoral in the North Sea

Premier Oil is working on plans to decommission the Balmoral field area in the UK central North Sea. These include disposal and sale of the Balmoral floating production vessel. Some decommissioning work is already under way, with Helix Well Op’s Seawell intervention vessel having entered four old suspended Balmoral water injection wells to compile information on their status and to prepare them for abandonment later. However, after re-evaluating the performance of fields in the area, Premier is considering moving cessation…

Using pedometers in a short term walking program boosts long term activity — ScienceDaily

Experts have found that people who use pedometers to count their steps as part of a 12-week walking programme, can have a healthier, more active lifestyle three to four years later. Brisk walking for 30 minutes or more daily on most days of the week can help adults and older adults to achieve important health benefits. Researchers at St George’s, University of London, compared adults and older adults in two 12-week walking programmes who were using pedometers, with people who…

Scientific analysis of diamond impurities — known as inclusions — reveal naturally forming ice crystals and point to water-rich regions deep below the Earth’s crust — ScienceDaily

A UNLV scientist has discovered the first direct evidence that fluid water pockets may exist as far as 500 miles deep into the Earth’s mantle. Groundbreaking research by UNLV geoscientist Oliver Tschauner and colleagues found diamonds pushed up from the Earth’s interior had traces of unique crystallized water called Ice-VII. The study, “Ice-VII inclusions in Diamonds: Evidence for aqueous fluid in Earth’s deep Mantle,” was published Thursday in the journal Science. In the jewelry business, diamonds with impurities hold less…

Flat gallium joins roster of new 2-D materials — ScienceDaily

Scientists at Rice University and the Indian Institute of Science, Bangalore, have discovered a method to make atomically flat gallium that shows promise for nanoscale electronics. The Rice lab of materials scientist Pulickel Ajayan and colleagues in India created two-dimensional gallenene, a thin film of conductive material that is to gallium what graphene is to carbon. Extracted into a two-dimensional form, the novel material appears to have an affinity for binding with semiconductors like silicon and could make an efficient…

Metal-organic compounds produces new class of glass — ScienceDaily

Lightning and volcanos both produce glass, and humans have been making glass from silicon dioxide since prehistory. Industrialization brought us boron-based glasses, polymer glasses and metallic glasses, but now an international team of researchers has developed a new family of glass based on metals and organic compounds that stacks up to the original silica in glass-forming ability. Glass-forming ability is the ability of a liquid to avoid crystallization during cooling. “Glass is a liquid frozen into a solid-like material in…

Quality assessment of 360 video view sessions | Engineering Blog | Facebook Code

At Facebook we’re continuously pushing the boundaries of 360 technology. We’ve pioneered ideas such as offset cubemaps, dynamic streaming, and content-dependent streaming. With every new technology, it’s important to be able to assess the quality of the immersive experience compared with previous approaches in terms of things like resolution, bitrate, or structural similarity. A reliable quality assessment (QA) workflow can provide consistent criteria for comparing 360 view sessions and help us make data-driven decisions about whether to adopt a new…

Sparrows apprentices showcase East Anglia ONE project

The latest intake of Sparrows Group apprentices have today (Friday 9 March) showcased their work on the East Anglia ONE offshore wind project as part of National Apprenticeship Week. Aberdeenshire East MSP Gillian Martin attended the trainees’ graduation ceremony and toured the Sparrows workshop where the group presented their work on the project. Sparrows are currently in the process of delivering 102 cranes for installation at ScottishPower Renewables’ 714 megawatt East Anglia ONE offshore wind farm. The group of 14…

Now Streaming! – Netflix TechBlog – Medium

Compression Performance In December 2016, we introduced AVCHi-Mobile and VP9-Mobile encodes for downloads. For these mobile encodes, several changes led to improved compression performance over per-title encodes, including longer GOPs, flexible encoder settings and per-chunk optimization. These streams serve as our high quality baseline for H.264/AVC and VP9 encoding with traditional rate control settings. The graph below (Fig. 3) demonstrates how the combination of Dynamic Optimization with shot-based encoding further improves compression efficiency. We plot the bitrate-VMAF curves of our…