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SUV a bit sluggish but easy on ozone

first_img AD Quality Auto 360p 720p 1080p Top articles1/5READ MOREWhicker: Clemson demonstrates that it’s tough to knock out the champHowever, the Mariner’s powertrain can get it doing 25mph on just the electric motor. When the engine isn’t needed – such as at slow speeds, when coasting or idling in traffic – it shuts down, and electric power kicks in. There is little sensation that a power shift is under way, but the engine rpm needle drops below zero into the green zone, a clever eco symbol. All this is possible because the company revised the control system’s software to improve how the two power systems work together. The company also promises better fuel efficiency of 34miles per gallon while motoring around town, about 14percent better than the 2007 model. And the hybrid components come with an eight-year, 100,000-mile warranty. The test model came equipped with the hybrid premium package that can display the hybrid system in operation on the video screen. Mercury went big with the redesign, too. The Mariner got a new hood outfitted with a “waterfall grille” that is larger than on previous models. The grille’s opening is bigger and so is the Mercury badge. A new roof panel helps reduce noise, vibration and harshness, and recessed channels improve airflow over the vehicle.160Want local news?Sign up for the Localist and stay informed Something went wrong. Please try again.subscribeCongratulations! You’re all set! Like its corporate cousin the Ford Escape, the Mercury Mariner received a remake for 2008, including the option of a full hybrid power plant. “Full” means the hybrid system can run on its gasoline engine, electric battery power or both. And Mercury says the acceleration is similar to a V-6, but with a smaller gasoline engine. During trips around the San Fernando Valley, the 133horsepower engine seemed a tad underpowered at times, and it was sluggish climbing the steep grade at the south end of Winnetka Avenue. The test model also emitted a strange creaking noise when accelerating and stopping. But this ride is about eco-friendliness and not horsepower. last_img read more

New study uncovers insights about the nature of the ultravioletbright star Barnard

first_img Citation: New study uncovers insights about the nature of the ultraviolet-bright star Barnard 29 (2019, March 11) retrieved 18 August 2019 from https://phys.org/news/2019-03-uncovers-insights-nature-ultraviolet-bright-star.html GHRS spectrum of Barnard 29. Credit: Dixon et al., 2019. Analyzing data from spectroscopic instruments, astronomers have reported fundamental properties of Barnard 29, an ultraviolet-bright star in globular cluster Messier 13. Results of the analysis, presented in a paper published March 1 on arXiv.org, provide important insights into the nature of this star. More information: William V. Dixon et al. Observations of the Ultraviolet-Bright Star Barnard 29 in the Globular Cluster M13 (NGC 6205). arXiv:1903.00350 [astro-ph.SR]. arxiv.org/abs/1903.00350 © 2019 Science X Network Barnard 29 has intrigued astronomers for over a century. It was described in the earliest studies as the most striking example of a star shining with a much bluer light than the great majority of the cluster’s other stars. According to more recent observations, Barnard 29 is classified as an ultraviolet-bright, post-asymptotic giant branch (AGB) star.Although Barnard 29 has been a subject of numerous observations, still many questions about its evolution and chemical composition remain unanswered. So a team of astronomers led by William V. Dixon of Space Telescope Science Institute in Baltimore, Maryland, has combed through the available data from the Hubble Space Telescope’s FUSE, COS and GHRS spectroscopic instruments and from the HIRES echelle spectrograph on the Keck I telescope in Hawaii. Analysis of this dataset allowed the researchers to determine chemical abundances for more than dozen elements in this star.”The availability of high-resolution, high signal-to-noise FUV and optical spectra allow us to confirm the star’s iron abundance and determine the abundances of many additional species,” the astronomers wrote in the paper.The research revealed that Barnard 29 has chemical composition typical for first-generation stars in Messier 13. The object was found to be richer in oxygen and poorer in aluminum than second-generation stars in this cluster.However, the star exhibits an underabundance of carbon and an overabundance of nitrogen, which indicates that it experienced a non-convective mixing on the red-giant branch (RGB) and did not undergo third dredge-up. Moreover, chemical abundances of Barnard 29 appear to have changed little since it left the RGB.”The abundance pattern seen in Barnard 29—C depletion and N enhancement relative to the average value for first-generation stars on the RGB—suggests that the star experienced the full impact of deep mixing,” the paper reads.Furthermore, the researchers found that Barnard 29 has an effective temperature of approximately 21,400 K and a mass of about 0.5 solar masses. They also found that iron abundance of this star is -6.05, consistent with the mean value for Messier 13.According to the paper, results of the study suggest that Barnard 29 evolved from a zero-age horizontal-branch (ZAHB) star with a mass of around 0.5-0.55 solar masses, near the boundary between the extreme and blue horizontal branches.”In light of stellar-evolution models, it seems likely that Barnard 29 is a post-HB star evolving from a ZAHB star with MZAHB between 0.50 and 0.55 M, a range spanning the EHB/BHB boundary. A post-HB star would have fully ascended the RGB, consistent with our suggestion that Barnard 29 experienced the full effects of non-convective mixing on the RGB,” the scientists explained. Explore further Astronomers reveal insights into the nature of a distant ultraviolet-bright star This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no part may be reproduced without the written permission. The content is provided for information purposes only.last_img read more

The Insane Amounts of Data Were Using Every Minute Infographic

first_img Register Now » Growing a business sometimes requires thinking outside the box. June 10, 2018 Free Webinar | Sept. 9: The Entrepreneur’s Playbook for Going Globalcenter_img With all the tweets, iMessages, streamed songs and Amazon prime orders, did you ever wonder just how much data is actually being generated every minute? To find out, cloud-based operating system Domo analyzed data usage over the past year, and shared the results in its sixth Data Never Sleeps report. It dives into online consumer behavior, examining the amount of data being generated every minute across popular apps and platforms including Google, Instagram, Amazon, Netflix, Spotify and more.Related: How Data Science Can Help You Grow Your Business FasterBy the looks of the research, things are only getting bigger. In 2012, there were approximately 2.2 billion active internet users. In 2017, active internet users reached 3.8 billion people — nearly 48 percent of the world’s population.When it comes to social media, data usage is unsurprisingly high. Since last year, Snapchat alone saw a 294 percent increase in the amount of images shared per minute. Nearly 2.1 million snaps are shared every 60 seconds. On average, there are 473,400 tweets posted every minute, 49,380 Instagrams photos and 79,740 Tumblr posts.Related: Here’s How to Download and Delete Your Facebook DataSo who’s behind all this social media madness? Americans upped their internet usage by 18 percent since 2017, however it’s not all going to Snapchat and Twitter. Much of it is going to video-streaming services such as Netflix and YouTube. Since last year, Netflix saw a whopping 40 percent increase in streaming hours, going from 69,444 hours to 97,222. And YouTube videos have reached 4.3 million views per minute. Even the peer-to-peer transactions app Venmo saw a major data jump, with 32 percent more transactions processed every minute compared to last year. Overall, Americans use 3.1 million GB of data every minute.To learn more about our data usage of 2018, check out the infographic below. 2 min readlast_img read more