Despite this, electric garbage trucks are still few and far between. BYD’s main competitor is Motiv Power Systems, which has sold small fleets of class 8 side-loading garbage trucks to Los Angeles and Sacramento, California. Wrightspeed, which was also making hybrid-electric garbage trucks—featured in this article from 2015—appears to have gone dormant, despite a contract to supply the New Zealand cities of Auckland and Wellington. And recently, Volvo announced a battery electric garbage truck, the FE Electric, although it appears to be limited to the European market.
E=m c
Albert Einstein proposed the most famous formula in physics in a 1905 paper on Special Relativity titled Does the inertia of an object depend upon its energy content?
Essentially, the equation says that mass and energy are intimately related. Atom bombs and nuclear reactors are practical examples of the formula working in one direction, turning matter into energy.
Forget stitches and old-school sutures. The Air Force is funding scientists who are using nano-technology and lasers to seal up wounds at a molecular level. It might sound like Star Trek tech, but it’s actually the latest in a series of ambitious Pentagon efforts to create faster, more effective methods of treating war-zone injuries. Last \[…\].
A new Cornell University-led study finds that the genome for a widely researched worm, on which countless studies are based, was flawed. Now, a fresh genome sequence will set the record straight and improve the accuracy of future research.
When scientists study the genetics of an organism, they start with a standard genome sequenced from a single strain that serves as a baseline. It’s like a chess board in a chess game: every board is fundamentally the same.
One model organism that scientists use in research is a worm called Caenorhabditis elegans. The worm—the first multicellular eukaryote (animal, plant or fungus) to have its genome sequenced—is easy to grow and has simple biology with no bones, heart or circulatory system. At the same time, it shares many genes and molecular pathways with humans, making it a go-to model for studying gene function, drug treatments, aging and human diseases such as cancer and diabetes.
People who have bipolar disorder may be more likely to later develop Parkinson’s disease than people who do not have bipolar disorder, according at a study published in the May 22, 2019, online issue of Neurology, the medical journal of the American Academy of Neurology.
“Previous studies have shown a relationship between depression and Parkinson’s disease, but few studies have looked at whether there is a relationship between bipolar disorder and Parkinson’s,” said study author Mu-Hong Chen, MD, Ph.D., of Taipei Veterans General Hospital in Taiwan.
For the study, researchers examined a national Taiwanese health database for people were diagnosed with bipolar disorder between 2001 and 2009 and who had no history of Parkinson’s disease, for a total of 56,340 people. They were matched with 225,360 people of the same age, sex and other factors who had never been diagnosed with bipolar disorder or Parkinson’s disease as a control group. Then the two groups were followed until the end of 2011.
Arindam Banerjee, an associate professor of mechanical engineering and mechanics at Lehigh University, studies the dynamics of materials in extreme environments. He and his team have built several devices to effectively investigate the dynamics of fluids and other materials under the influence of high acceleration and centrifugal force.
One area of interest is Rayleigh-Taylor instability, which occurs between materials of different densities when the density and pressure gradients are in opposite directions creating an unstable stratification.
“In the presence of gravity—or any accelerating field—the two materials penetrate one another like ‘fingers,’” says Banerjee.
Facebook removed more than 3 billion fake accounts from October to March, twice as many as the previous six months, the company said Thursday.
Nearly all of them were caught before they had a chance to become “active” users of the social network.
In a new report, Facebook said it saw a “steep increase” in the creation of abusive, fake accounts in the past six months. While most of these fake accounts were blocked “within minutes” of their creation, the company said this increase of “automated attacks” by bad actors meant not only that it caught more of the fake accounts, but that more of them slipped through the cracks.