The print edition of Aftermarket Business carried a monthly circulation of 20,000. The digital version will be e-mailed to more than 140,000 “decision makers and influencers” in the auto distribution market, the company said.Advanstar partnered with digital vendor Nxtbook Media to develop the magazine’s digital format. “Print magazines don’t inherently translate well to a comp screen,” Savas said. “So, instead of having a 150-page magazine replicated for the Web, we’ll produce a 15-, 16-page e-magazine in rectangular format that’s easy to read on a computer screen.”While he declined offer a specific amount, Savas said transitioning to digital will also save a significant amount of money in printing and distribution costs. “Like every other magazine, our revenue was declining in print,” he said. “While it didn’t get to the point where the magazine was losing money overall, we decided that a new strategy was in order.” Trade publisher Advanstar Communications has decided to fold the print edition of auto title Aftermarket Business. The December issue will be its last.Starting in January, Advanstar instead will publish a monthly digital version of the 73-year-old magazine as well as twice-weekly e-newsletters. Going all-digital is a “more efficient and timely method of reaching buyers and sellers in distribution,” Advanstar vice president and Automotive Group general manager Jim Savas told FOLIO:. “Our audience is less reliant today on old media in a monthly print format. They’re reacting to news much quicker. This is another evolution in the way we want to help our advertisers communicate to the distribution audience.”
1:15 Now playing: Watch this: Comment Google+ communities can migrate to Tapatalk for free. Tapatalk Tapatalk’s forum app is offering a new home for soon to be platform-less Google+ communities. The company announced Wednesday that moderators and owners of communities can migrate their data to Tapatalk for free.Moderators or owners of Google+ communities can fill out a form to request a migration to Tapatalk, the company said in a release Wednesday. Users will see a preview of what their community will look like in Tapatalk Groups. Tapatalk can move all the content after being given moderator access and doesn’t need any of your backup files. After the migration, community members can log in to Tapatalk with Google Sign In. “We believe in the value of online communities and are committed to ensuring members of Google+ communities can continue to engage on the topics they are passionate about,” Winter Wong, CEO of Tapatalk, said in the press release. “We’re proud to enable this transition and support these communities with end-to-end migration services and a host of new added benefits that are proven to help online forums thrive.”Google announced the decision to shutter its social network Google+ last October after a massive data breach. Google said that between 2015 and March 2018, up to 500,000 users’ personal data was exposed. The company planned to sunset the network in August 2019.Two months later the company moved up the shutdown date to April 2019 after a bug affected more than 50 million users. Here’s how to use Google’s Password Checkup tool 1 Tags Software Share your voice
(Left) A photograph of the PENG, (center) the PENG powers an LCD for more than 60 seconds, and (right) a green LED is powered by a Li-ion battery that was charged by the PENG. Image credit: Yang, et al. ©2012 American Chemical Society Explore further The scientists, Ya Yang and Sihong Wang from the Georgia Institute of Technology in Atlanta, Yan Zhang from the Georgia Institute of Technology and the Chinese Academy of Sciences in Beijing, and Zhong Lin Wang from both institutions, have published a paper on a pyroelectric nanogenerator in a recent issue of Nano Letters.The scientists call the device a pyroelectric nanogenerator (PENG) because it’s based on the pyroelectric effect, in which an anisotropic material’s polarization changes in response to temperature fluctuations, which can be used to harvest thermal energy. Unlike the Seebeck effect, which is used to harvest thermal energy based on the temperature difference between two ends of a device, the pyroelectric effect occurs in environments where the temperature is spatially uniform but changes over time.”Wasted heat is a rich source of energy that can be harvested,” Zhong Lin Wang told Phys.org. “In 2010, for example, more than 50 percent of the energy generated from all sources in the US was lost mainly in the form of wasted heat, which presents us with a great opportunity to harvest this type of energy using nanotechnology. Harvesting thermoelectric energy mainly relies on the Seebeck effect, which utilizes a temperature difference between two ends of the device for driving the diffusion of charge carriers. The presence of a temperature gradient is a must for the conventional thermoelectric cell. However, in an environment where the temperature is spatially uniform without a gradient, such as the outdoors in our daily life, the Seebeck effect is hardly useful for harvesting thermal energy arising from a time-dependent temperature fluctuation. In this case, the pyroelectric effect is the choice, which is about the spontaneous polarization in certain anisotropic solids as a result of temperature fluctuation, but there are few studies about using the pyroelectric effect for harvesting thermal energy.” More information: Ya Yang, et al. “Pyroelectric Nanogenerators for Driving Wireless Sensors.” Nano Letters. DOI: 10.1021/nl303755m (Phys.org)—The idea of harvesting ambient energy from the environment that would otherwise not be purposefully used is, in theory, a great way to produce green, renewable energy. But the biggest problem in this fairly new area of research is that scientists have yet to find a method that can harvest very large amounts of energy. However, the technology is steadily improving, as demonstrated by the development of a nanogenerator that can partially charge a Li-ion battery by harvesting energy from temperature fluctuations in the environment. Ancient effect harnessed to produce electricity from waste heat Journal information: Nano Letters To date, PENGs have had output voltages below 0.1 V and current below 1 nA, which are too low to drive any commercial electronics. Here, the researchers demonstrated that a PENG made of a lead zirconate titanate (PZT) thin film has an output voltage of up to 22 V, a current peak of 430 nA, and a current density of 171 nA/cm2 when exposed to a temperature change of 45 K at a rate of 0.2 K/second. The PZT thin film is 21 mm long, 12 mm wide, and 175 μm thick – about half the size of a postage stamp.With these improvements in voltage and current, a single output pulse of the PENG could continuously power an LCD for longer than 60 seconds; in comparison, a piezoelectric nanogenerator, which harvests mechanical energy from the environment, can power an LCD for about 2 seconds. To expand the potential applications of the PENG, the researchers wanted to store the electric energy it generated from temperature fluctuations. So they hooked it up to a Li-ion coin battery, and demonstrated that the PENG could charge the battery from 650 to 810 mV in about 3 hours. They then showed that this stored electric capacity could be used to power a green LED for a few seconds.Another potential application of PENGs is wireless sensors. The researchers explained that wireless sensors can be powered by a rechargeable Li-ion battery with a voltage of 2.8 V. However, the PENG fabricated here has too small of a current to do this, since the current cannot completely overtake the battery’s inherent self-discharge. The researchers predict that doubling the area of the PZT film would double the current, and increasing the thickness of the PZT film could also increase the current. These improvements could make the pyroelectric nanogenerators attractive for driving wireless sensors, LCDs, and other small electronic devices, just by harvesting the temperature changes in the environment.”In our living environment, temperature change can come from an air-flow-induced drop in room temperature, the cycled heat generation near an engine, sunlight illumination with a moving shadow, on and off hot water/air flow in a pipe, etc.” Zhong Lin Wang said.Currently, the researchers are continuing to improve the PENG’s output power and are also integrating the technology with some existing products to demonstrate its practical applications. Copyright 2012 Phys.org All rights reserved. This material may not be published, broadcast, rewritten or redistributed in whole or part without the express written permission of PhysOrg.com. Citation: Pyroelectric nanogenerator charges Li-ion battery with harvested energy (2012, November 20) retrieved 18 August 2019 from https://phys.org/news/2012-11-pyroelectric-nanogenerator-li-ion-battery-harvested.html 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.