Tags 2019 Porsche Panamera GTS will make you green with envy Porsche 2020 Hyundai Palisade review: Posh enough to make Genesis jealous More From Roadshow Preview • 2019 Porsche Panamera GTS: Hitting the sweet spot Hatchbacks Luxury cars Sports Cars 2020 Kia Telluride review: Kia’s new SUV has big style and bigger value More about 2019 Porsche Panamera GTS Recalls Porsche 2020 BMW M340i review: A dash of M makes everything better Post a comment 0 Share your voice A lack of power steering isn’t the end of the world, but it might make driving trickier at low speeds, which can increase the risk of injury. Hence, Porsche’s got a fresh recall on its hands.Porsche has issued a worldwide recall for approximately 75,000 examples of the 2017-2018 Porsche Panamera. Of those vehicles, approximately 18,000 of them are located in the US and Puerto Rico.The issue stems from the software controlling the car’s power steering. Porsche discovered a potential software failure in the field that may cause the power steering to disappear or kick in and out intermittently. This means a driver may need to exert extra force to maneuver the vehicle, which could increase the risk of a collision. Thankfully, Porsche has received no reports of injuries related to the software bug.The fix is entirely software-based, and thus it should only take about an hour for Porsche’s technicians to clear things up. Dealers will take the recalled vehicles and apply a software fix that will eliminate the issue. Vehicles still in dealer hands will be fixed before being sold. Owners will receive a notification via first-class mail. 56 Photos
Prothom alo File PhotoWoman entrepreneur Barnali Chowdhury Rupa was heading towards Dhanmondi after buying clothes from New Market on 5 August. She was intercepted by ‘some people’ who handed her over to the police near Medinova Medical Centre. The police showed her arrested in three cases, including attacking Awami League office in Dhanmoni on 4 August, said Barnali’s mother Ambia Khatun and sister Kaniz Fatema on Thursday.How could Barnali, a 35-year-old businesswomen, be indicted in such cases?The investigation officer of the case claimed they scanned Barnali’s mobile phone and found that she had distributed food among the demonstrating students demanding safe roads.That testifies her involvement in attack and vandalism, according to the official.Barnali’s lawyer HM Masud told Prothom Alo, the police have shown her arrested based on suspicion. She was put on a six-day remand.Masud also claimed that his client did not know anything about the incidents.The police filed three cases in the incidents that took place at Dhanmondi, accusing several hundred unnamed people. Barnali along with 13 others were arrested in those cases. Among the arrested, 12 are students of different private universities. The police don’t even have any specific information about the arrested.Relatives of the arrested claimed they had been handed over to the police around Mirpur Road and Dhanmondi areas by activists of ruling party’s student wing Bangladesh Chhatra League and Juba League, who were armed with stick and rod.Some others were also detained form the areas but they were later released. Guardian of a released student alleged that he had to bribe the police to free his son.Officer-in-charge of Dhanmondi police station Abdul Lotif denied such allegations.“There were specific directions on us that no school-college students should be arrested. Besides, we didn’t arrest all of them, people did,” he said.According to Dhaka Metropolitan Police, around 100 were arrested in 51 cases filed over violence and spreading rumors in social media centering the demonstration of students demanding safe roads following the death of two college students on 29 July.Police and court sources said, Awami League filed two cases over attack on their party office accusing several hundred people, including BNP, Juba Dal and Chhatra Dal men. But, the law enforcement are yet to find the political affiliation of those who were detained randomly from the street.Tamal, one of the 14 arrested in the case, is a student of Bangladesh University of Professionals.His father Abdus Samad said, “Tamal is suffering from Bronchitis. He was at home at the time of the incident. The CCTV footage of the house will testify it. He was picked up by Bangladesh Chhatra League men the next day when he went out with his friends. He is severely ill now.”Two brothers — Mahmudur Rahman and Mahbubur Naeem — were also arrested on the same day.Students and activists of ruling party Awami League clash in front of the East West University on 6 August. Photo: Collected.Their mother said, “They were indicted and the court has even granted a remand. What’s the use of writing these now?”Three other boys were arrested form in front of Labaid Hospital in Dhanmondi while they were returning to their mess in Mohammadpur after visiting a patient in Birdem hospital.One of the three arrested students is Mashrikul Alam. His father Shamsul Islam said, Mashrikul and his cousin Omar Siam went to visit an ailing relative while the police arrested them from Mirpur Road.Another arrested student Gazi Imam Bukhari Sifat studies in ASA University. He was arrested from Kalabagan area while going to New Market with four other students on 5 August.Sifat’s father Gazi Akkas said, “I have nothing to say. Everybody is enjoying ahead of Eid but my son is in jail. I want to humbly say, my son is not involved in politics. He didn’t even join the demonstration. Please have mercy on him.”Sub-inspector Jayed Abdullah of Dhanmondi police station, investigation officer of one of the cases, told Prothom Alo that he himself didn’t arrest anybody in this connection.According to him, BCL and Juba League men handed many people over at that time. Only those who were found involved after verification were shown arrested, he claimed.
Listen at WEAA Live Stream: http://amber.streamguys.com.4020/live.m3uFrom 5-7 P.M.A review of some of the top news stories of the week directly from the pages of the AFRO, with managing editor Kamau High. Plus, The Mod Squad, Taya Graham and Stephen Janis of The Real News Network report on politics and law enforcement, including more thoughts on the devastating DOJ report on the Baltimore City Police Department. These stories and much more on AFRO’s First Edition with Sean Yoes .
Explore further When water vapor condenses in a nano-sized space between two surfaces, the liquid behaves more like solid ice than liquid water, even at room temperature. This solidification causes water to exert such a strong friction force that it “acts like a glue,” according to a new study. If you’ve ever thought about ice skating on a dry floor – or anywhere besides a sheet of ice – you can easily imagine how you’d ruin your blades and not get very far. Ice skating – like many processes involving moving parts – requires water acting as a lubricant between the blades and the solid ice, reducing friction and keeping the sliding surfaces apart from each other. Now imagine you’re five nanometers tall and want to go ice skating, or that you want to build a nano-sized sliding element using water as a lubricant. Scientists who have recently been experimenting with tiny moving devices have run into problems due to stiction (static friction) forces between moving parts.“Micro- and nano-electromechanical systems (MEMS and NEMS) have tiny moving parts typically etched out of silicon,” said J. Frenken, coauthor with K. Jinesh of a recent Physical Review Letter, to PhysOrg.com. “Using special tricks such as under-etching, intricate structures can be formed with cogwheels, hinges, bending arms and sliding elements.” However, mechanical systems on the micro and nano scales endure much greater friction than their macroscopic counterparts.“Many of the designs for such miniature devices are useless in practice because the parts either don’t move at all anymore or they move with very high friction, which leads to excessive wear,” said Frenken. “After a short time, this wear destroys the device. One could state that many MEMS devices work in ‘self-destruct’ mode.”Jinesh and Frenken explain that the reason for these lube problems is that, on the nanoscale, water ceases to be wet and slippery and instead becomes solid and sticky. By studying the atomic and molecular details of water and the surfaces sandwiching the water, the scientists found condensed water is immediately converted into ice, acting more like a glue than a lubricant. This finding contrasts previous studies, which suggested that water acts like a lubricant down to the nanoscale.“In many of these MEMS and NEMS structures, there are elements that are either touching each other or close to touching each other,” said Frenken. “At the locations where two objects approach each other within a very small distance, water from the air tends to condense. This capillary condensation strongly pulls the (nearly) touching objects into intimate contact. To avoid friction and wear, these elements need to be lubricated with a liquid that would remain slippery down to the nanoscale – actually, the lubricant should become even more slippery than it is on a macroscopic scale.” Keep Cool to Reduce Friction,” Suggests a New Study of Nanoscale Water Condensation 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. At a high enough humidity, water vapor condenses in the tiny region between two surfaces (here, a tungsten tip of a friction force microscope and a graphite surface). Scientists have found that – unlike on the macro scale – the “liquid” acts more akin to a glue-like solid at room temperature, creating excessive friction that disables many tiny mechanical devices. Image Credit: J. Frenken and K. Jinesh. In their experiment, the scientists built a friction force microscope, which consists of a hydrophilic tungsten tip scanning back and forth across a hydrophobic graphite surface. In extremely dry conditions, the tip demonstrated expected “stick-slip motion,” meaning it would generally move evenly, while occasionally slipping ahead at regular intervals.At higher humidities (relative humidity greater than 10%), however, the scientists did not observe this motion due to water vapor condensing in the capillary between the tip and surface. The water exerts an elastic force on the tip, and as the tip moves, the water stays connected with it, appearing to stretch across the surface. (See above image.)The static stress and regular structure of the condensate makes the scientists conclude that the condensate acts like a solid. The team observed the tip “write” a stripe of water up to 250 nanometers, which lasted for up to two seconds and beyond the point where the tip scans above the condensate.“Although in many cases, water acting as a glue on the nanoscale is a nuisance, there are also situations where one can take advantage of the stickiness on this small scale,” said Frenken. “On a macroscopic scale, we all know how dental prostheses that can stay in place via the action of bridging water. In this case, however, the water is still completely liquid because of the thickness of the water layers. In the laboratory, we often use capillary condensation to pick up light objects, simply touching a small object with a thin wire, instead of using tweezers. A capillary neck forms between the object and the wire, gluing the two together.” This “nuisance,” then, may lead to more useful applications, in addition to the problem it identified.Citation: Jinesh, K. B. and Frenken, J. W. M. Capillary Condensation in Atomic Scale Friction: How Water Acts like a Glue. Physical Review Letters. 96, 166103 (2006).By Lisa Zyga, Copyright 2006 PhysOrg.com Citation: Scientists discover water is sticky on a small scale (2006, May 8) retrieved 18 August 2019 from https://phys.org/news/2006-05-scientists-sticky-small-scale.html