Erosion boredom and the effects of hydro dams on two Cree communities

first_imgAshley Brandson APTN News For decades, hydro development has wreaked havoc on communities in Northern Manitoba – culturally, socially, and economically.But now community members are speaking out.In this APTN News special report, residents are sharing how the developments have effected the environment.abrandson@aptn.ca@ashleybrandson This Part 3 in the series Power Failure: The impacts of hydro dams on Northern Manitoba.last_img

Tall Players Like Joel Embiid Are More Prone to Injury

This was never supposed to be Joel Embiid’s draft. College stars Jabari Parker and Andrew Wiggins were expected to be the frontrunners for 2014. But as the NCAA season began, Embiid, a center for Kansas, amazed, prompting his coach to compare him to Hakeem Olajuwon. He was ascendant — the kind of guy an NBA team tanks for.Then came the injuries. Embiid sprained his left knee early in the season and suffered a bone contusion, missing only one game. Later, right before the Big 12 tournament, doctors diagnosed him with a spondylolysis, a stress fracture in his lower back. The injury forced him out of the NCAA tournament but not out of the NBA draft. Many draft boards had him going first, convinced that teams would see the potential beyond the injuries.But last week Embiid had surgery to repair a stress fracture in the navicular bone of his foot. He’s reported to be out four to six months, and with the draft on Thursday there’s no telling where he’ll fall. USA Today now projects that Embiid will be the third pick and an NBA.com consensus mock draft projects him at fifth.Teams may be right to show concern about Embiid’s injuries, in part because of his height. Embiid is listed as 7’ tall by ESPN. Examining recent high draft picks reveals that taller players have gone on to miss a larger percentage of games than their shorter peers. Since 2000, 97 players 6’9” and taller have been drafted by teams with lottery selections (the first 13 or 14 picks in the draft, depending on the year). These players missed 17.9 percent of their potential NBA games (regular season and postseason, where appropriate) to injury over the course of their careers, while the 95 players 6’8” or shorter missed just 13.5 percent. The percentage of games missed generally increases as height increases. Players 7’0” or taller have missed nearly 24 percent of their games.That doesn’t factor in Embiid’s specific injuries. The navicular bone injury is the most troubling. The navicular is one of the tarsal bones located in the mid-foot, and an injury to the area is significant. In Embiid’s case, it required surgical intervention.Other players have had navicular fractures (it was the only injury to sideline Michael Jordan for an extended period of time in Chicago), but it’s been fairly uncommon the last few years. I keep a database of every injury in the NBA for any player who’s played since 2009, including each player’s entire injury history, even if the injury took place before 2009. Only seven affected NBA players out of a possible 900+ in my data set had a navicular fracture.Perimeter players including Jordan and Minnesota Timberwolves guard Kevin Martin both fared well following navicular fractures. But unfortunately for Embiid, the precedent set by big men to suffer the injury doesn’t inspire much confidence. In three of the seven navicular cases (including for perimeter and post players), the fracture reoccurred or additional surgery was needed. All three players (Curtis Borchardt, Zydrunas Ilgauskas and Yao Ming) stood 7 feet or taller. There’s another seven-footer, too, whose prognosis we’re not sure of yet: Brendan Haywood suffered a navicular fracture in October 2013 and didn’t play a minute this year for Charlotte. We’ll have to wait to see how his foot holds up.Small sample size, of course, but it begins to tell us what teams might be able to expect from Embiid. And there are always outliers. The careers of Kevin McHale (who played too long ago to be included in my database) and Ilgauskas provide some optimism. McHale bounced back following his injury in the 1987 postseason and played seven more seasons, including four at an All-Star level. Ilgauskas also went on to have a productive career.Then again, that only happened after his third foot surgery, a procedure that involved reshaping multiple bones in his foot. read more

9 Wilmington Teens In Church Youth Group Raise 26K To Provide Cleft

first_imgWILMINGTON, MA — On Monday, April 22, 2019, the Parish of the Transfiguration’s Youth Group presented Krysta Mochi, a representative from Smile Train, with a check for $5,250. With a five-time match program offered by Smile Train supporting companies, this donation totaled $26,250.Smile Train, celebrating its 20th anniversary this year, is an organization that provides free cleft lip and cleft palate surgery to children in 85 countries. These impairments make it difficult for children to eat, speak, hear and causes isolation, depression, abandonment and sometimes death.The money raised by the Youth Group will pay for surgeries that will transfigure 105 children’s lives.The Parish of the Transfiguration of Wilmington and South Tewksbury’s (made up of St. Dorothy and St. Thomas Churches) Youth Group is a part of the Faith Formation program under the direction of Deborah Casey. It is comprised of five seniors and four juniors, who were confirmed in the church’s Faith Formation program. The Youth Group is run by Diane Garrity and its members include: Nathan Curdo, Stevie Daley, Mike Fiorenza, Emma Garrity, Julia McLaughlin, Ben and Ryan Packer, Anna Rideout and Chris Stokes all of Wilmington.The Youth Group raised the money by using proceeds from three of their fundraising events combined with donations from the group’s family and friends over the last four months. Contributions were also received from many Faith Formation families and catechists. In addition, the Rotary Interact Group, Rotary Club of Wilmington and the Wilmington Sons of Italy and members of the Tewksbury Sport Club also made generous contributions.“It was heartwarming to see our Faith Formation students get excited when they dropped their dollars and change into our collection jugs and then put a smiley face on our tote board. The team members and students were all thrilled when we announced we had reached our goal and that they were a part of this life-changing accomplishment” said Diane Garrity. “I am very grateful to my youth group for their efforts on behalf of Smile Train and I am blessed to be working with my wonderful colleagues Deb Casey and Jean Jordan, for their continued support with our endeavors.”This effort was part of an Almsgiving project by the Youth Group and Faith Formation students during the Lenten season. This Lent, the teenagers dedicated their time, talents and personal donations for this fundraising campaign.“Our original goal was $2,500 but with the generosity and support of our parish community, we were able to more than double our goal! I am very proud of my ‘Team Transfigure’ who have made a positive impact in over 100 children’s lives,” added Garrity.Front Row (L to R): Ryan Packer, Julia McLaughlin, Ben Packer, Diane Garrity, Krysta Mochi (Smile Train), Nathan Curdo and Emma Garrity. Back Row (L to R): Mike Fiorenza, Chris Stokes, Stevie Daley and Anna Rideout.(NOTE: The above press release & photo is from The Parish of the Transfiguration’s Youth Group.)Like Wilmington Apple on Facebook. Follow Wilmington Apple on Twitter. Follow Wilmington Apple on Instagram. Subscribe to Wilmington Apple’s daily email newsletter HERE. Got a comment, question, photo, press release, or news tip? Email wilmingtonapple@gmail.com.Share this:TwitterFacebookLike this:Like Loading… RelatedFebruary Fun Fest Fundraiser For Grades 1-8 Set For Feb. 19 At Villanova HallIn “Community”2 Children Baptized At The Parish Of The TransfigurationIn “Community”4 Children Baptized At The Parish Of The TransfigurationIn “Community”last_img read more

Teens Lie In At White House To Push For Stronger Gun Control

first_img Share Evan Vucci/APDemonstrators participate in a “lie-in” during a protest in favor of gun control reform in front of the White House. Grassroots groups are planning hundreds more protests in coming weeks.A group of teenagers who say they are desperate for some action on gun control staged a silent “lie-in” outside the White House Monday, in the wake of the deadly Florida school shooting last week.Right now: Teens for Gun Reform protesting outside of White House. Just started reading names of children killed by gun violence. #parkland pic.twitter.com/7p1gC8XVRF— Blayne Alexander (@ReporterBlayne) February 19, 2018The event was organized over Facebook by a group called Teens for Gun Reform, which listed their intentions in a post: “By doing this, we will make a statement on the atrocities which have been committed due to the lack of gun control, and send a powerful message to our government that they must take action now.”Dozens of students assuming the pose of corpses lay on the sidewalk in view of the White House, with their arms crossed over the chests.The somber protests lasted only a few minutes “in order to symbolize how quickly someone, such as the Parkland [Florida] shooter, is able to purchase a gun in America,” organizers wrote, alluding to Nikolas Cruz, who, according to court documents, confessed to firing on unarmed students and teachers with a legally purchased AR-15 rifle.The Valentine’s Day rampage at Marjory Stoneman Douglas High School left 17 dead and 15 wounded.“We must stand together in solidarity as the younger generations, and show our legislators that we demand reform in order to feel safer in our classrooms,” the group declared on Facebook.The D.C. area group is part of a groundswell of students across the country challenging politicians they argue have failed to make schools a safe haven from gun violence. They are organizing rallies and a national walkouts demanding stronger gun laws.Students from the Florida high school are planning a massive rally against school and gun violence called “March for Our Lives” in Washington D.C. on March 24.Smaller rallies and protests are being organized in cities around the U.S.“We’re going to have, in every major city, somewhere that people all across the country can go to,” Brendan Duff, a student at Marjory Stoneman Douglas High School told NPR.He said students “want to feel engaged, and they want to work they’re doing something to help. And this is it.”The Women’s March youth branch, EMPOWER, is also organizing a national school walk out on March 14, the one month anniversary of the Florida shooting. CNN says the rallies are scheduled to begin at 10 a.m. in every time zone and last for 17 minutes — one for each victim who lost their life in the massacre.Meanwhile, the White House says President Trump will host a listening session with high school students and teachers on Wednesday and meet with state local security officials on Thursday.Copyright 2018 NPR. To see more, visit http://www.npr.org/.last_img read more

Gray Guilty in the Murder of Taylor Hayes

first_imgBy Michelle Richardson, Special to the AFROAugust 14, a Baltimore jury found Keon Gray guilty in the murder of seven-year-old Taylor Hayes last July.Gray, was found guilty of second degree murder and a total of seven of 19 counts against him including: second-degree murder of Taylor Hayes and use of a firearm in commission of a crime of violence against Taylor Hayes, among other charges against others involved in the shooting that took Taylor’s life.Seven-year-old Taylor Hayes was killed last July. On Aug. 14, Keon Gray was found guilty of second-degree murder in her death (AFRO Photo)Hayes was killed in July 2018 as she rode in the backseat of a car driven by a family friend. She was struck in the back by a bullet through the trunk and died 2 days later. She became one of Baltimore’s youngest victims of gun violence. Police have charged Daneka McDonald, 35, who is the girlfriend of Gray with an accessory after the shooting. Her car was allegedly used as the getaway vehicle in the shooting. McDonald is scheduled for trial next month. Last month, a judge prohibited parts of McDonald’s 12-hour police interview when the judge determined detectives allegedly intimidated her. Gray’s trial became more controversial when the lead detective in the case was charged with drunk driving and other charges.Sgt. Kevin T. Brown, 43, of Abingdon was charged with driving his unmarked police vehicle under the influence after a crash on I95 in Howard County last year. The charges are listed as driving while impaired by alcohol, negligent driving and failing to control a vehicle speed to avoid collision, in addition to the charge of carrying a handgun while under the influence of alcohol, court records show. When police arrived, Brown identified himself as a Baltimore City police officer. He was arrested at the scene and taken to JFK Memorial Highway Barrack. Baltimore Police spokesman Matt Jablow said Brown has been on administrative duty with pay but did not know when the suspension began. Jablow said the department has been aware of the charges. He declined to comment further on the investigation.A hearing on the matter is scheduled Aug. 23 and a trial date scheduled for Oct. 31.Brown, whose testimony is at the center of the trial, allegedly made conflicting statements under oath, leading defense attorneys to claim that Gray is a scapegoat for the BPD’s rushed police work. A witness stated the car she seen speeding away from the crime scene was not the same vehicle that Gray was identified in.last_img read more

Molecules could create tiny circuits on computer chips

first_imgPolymer molecules can be deposited onto computer chips where they arrange themselves into small-scale patterns like the one shown here. Credit: Yeon Sik Jung and Joel Yang. (PhysOrg.com) — As the features on computer chips become increasingly smaller, finding ways to fabricate the chips has become a big challenge. In a new study, researchers from MIT have demonstrated that certain molecules can be deposited on mostly empty chips, where they arrange themselves into patterns that form the outlines of tiny functioning circuits. Researchers Karl Berggren, the Emanuel E. Landsman Associate Professor of Electrical Engineering, and Caroline Ross, the Toyota Professor of Materials Science and Engineering, have published their new method in a recent issue of Nature Nanotechnology. New Laser Technique Advances Nanofabrication Process Citation: Molecules could create tiny circuits on computer chips (2010, March 16) retrieved 18 August 2019 from https://phys.org/news/2010-03-molecules-tiny-circuits-chips.html More information: Joel K. W. Yang, Yeon Sik Jung, Jae-Byum Chang, R. A. Mickiewicz, A. Alexander-Katz, C. A. Ross & Karl K. Berggren. “Complex self-assembled patterns using sparse commensurate templates with locally varying motifs.” Nature Nanotechnology. Doi:10.1038/nnano.2010.30. via: MIT News © 2010 PhysOrg.com As explained in an article at MIT News, the process currently used to fabricate circuits on chips – photolithography – has changed very little over the past 50 years. Photolithography involves shining a light through a patterned mask onto a layer of light-sensitive material coated on the computer chip. Light exposure causes the photoresist to harden, and when the unhardened area is washed away, only the patterned area remains.However, now that chip features have become smaller than the wavelength of light used in this process, photolithography cannot be used anymore. To confront this challenge, researchers have tried using electron beams instead of light beams due to their smaller wavelength. However, the problem with electron-beam lithography is that it takes a long time, and so it is more expensive. Unlike photolithography, which can expose an entire chip at once with light, an electron beam is more focused and can only expose small areas at a time, so that it has to scan back and forth across the chip to cover the entire area.In the new method, Berggren and Ross have greatly minimized the need for electron-beam lithography, using it only to create sparsely patterned guidance posts throughout the chip. To fill in the patterns between the posts, they deposited long, repeating chains of polymer molecules that attach themselves to the posts and then arrange themselves in specific patterns. To get the desired patterns, the researchers used copolymers, which are made of two different types of polymer molecules. The different polymer chains don’t like to mix, yet they are still joined together – like “the characters played by Robert De Niro and Charles Grodin in the movie Midnight Run, a bounty hunter and a white-collar criminal who are handcuffed together but can’t stand each other,” in Berggren’s analogy. By trying to pull away from each other, the polymers arrange themselves into predictable patterns.Later, when exposed to a plasma, one of the polymers turns to hardened glass, while the other burns away. Like in photolithography, the glass polymer could be used as the photoresist, which hardens to form the pattern. By controlling different characteristics – such as polymer lengths, their relative proportions, and the shape and location of the posts – the researchers could produce a variety of specific patterns that could be useful for designing circuits. With its minor reliance on electron-beam lithography, the new method could offer cost-effective fabrication in areas besides computer chips. For example, the technique could be used to produce stamps for creating magnetic patterns on hard disks, which are currently produced with electron-beam lithography. However, more research is required before manufacturing individual computer chips with self-assembling molecules, such as getting the molecules to form the exact patterns needed to produce functioning circuits. Explore further 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

Memristors with a twist Quasiliquid soft matter foreshadows biocompatible electronics and flexible

first_imgVelev’s earlier work focused on gel-based photovoltaics, diodes and other devices – but their downside was the rigid electrodes used as contacts. Currently, however, the research team is studying a moldable liquid metal. “We originally thought about combining the metal with the gels to make a device completely out of soft materials resembling Jell-O,” quips Dickey. “What we discovered is that the gel environment and the oxide that forms on the metal can work synergistically to form memory. Once we made this observation, the main challenge was elucidating the exact mechanism – which our rather brilliant students figured out with some very clever experiments.” Copyright 2011 PhysOrg.com. 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. At the same time, the materials that make memristors (and electronic devices in general) possible are usually rigid in structure and can never operate in water. This means that some of the most promising uses of memristor technology – such as in vivo sensors and oceanic rescue robots – are not feasible without needing protection from the liquid environment in which they operate.The best of all possible electronic worlds, then, would have the ion-based functionality of memristors embodied in a flexible hydrophilic material. As it turns out, that – and potentially much more – is precisely what researchers in the Department of Chemical and Biomolecular Engineering at North Carolina State University have demonstrated. Prof. Orin Velev, Prof. Michael Dickey, and graduate students Hyung-Jun Koo and Ju-Hee So, have devised a new class of easily fabricated memristors based entirely on so-called soft matter – hydrogels doped with polyelectrolytes sandwiched with liquid metal electrodes – that operate using ionic conductance in aqueous systems rather than conventional electron transport. Moreover, in being able to operate in water, the new gel-based soft matter differs significantly from the many soft matter electronics efforts that use polymer semiconductors but are not water-compatible.In essence, this suggests that in addition to having the potential to realize memristor-based neuromorphic structures, the polysaccharide hydrogel core of these devices is biocompatible, could possibly be interfaced with live neural and other tissue, and could lead to three-dimensional soft circuits and their in vivo operations. A crossbar array of soft material-based memristors. (a) Photo¬graph of a prototype of an integrated soft memristor circuit with a 2 × 2 crossbar array. The device is flexible as shown in the inset image and compatible with water. (b) Schematic of the prototype in (a). The arrows point to the gel nodes. (c) Switching performance of the memristor circuit device. The switching bias to turn ‘off’ (+5 V) and ‘on’ (−5 V) the nodes is applied to the 1-B node for the first and second cycles and to the 2-A node for the third cycle, respectively, as shown by the arrows. The filled symbols represent the nodes in the ‘off’ state. The switching bias was applied to each node for 1 sec to minimize the crosstalk. © 2011 PNAS, doi: 10.1002/adma.201101257 Citation: Memristors with a twist: Quasi-liquid soft matter foreshadows biocompatible electronics and flexible robots (2011, July 28) retrieved 18 August 2019 from https://phys.org/news/2011-07-memristors-quasi-liquid-soft-foreshadows-biocompatible.html More specifically, Dickey continues, “there are two key research issues that we addressed to make the technology work. The first was learning that the thickness of the oxide layer controls the resistance through the soft device – a property we use to define on and off states that correspond to conductive and resistive states, respectively. The second was learning that we could introduce asymmetry into the device – a requirement for memristors – by doping the gels with polymer to control the chemical environment around the metal.”Going forward, Dickey continues, “We hope to take advantage of the fact the water-based gels in the device are biocompatible, and could in principle be integrated with biological species, such as cells, enzymes, proteins, and tissues. We also made no attempt to optimize the memory capacity in our prototypes, which is an area for improvement. Finally, we’re working to understand the subtle aspects of the operating mechanism.”Velev stresses that two primary areas of the group’s future soft-matter research are electrochemical biosensors and soft-matter actuators. “For example,” he explains, “gel-based actuators respond to external voltage with controllable biomimetic movement that mimics the locomotion of jellyfish – and like jellyfish, are water-based and even biodegradable. This could lead to the development of gel-based soft robotics technology, which would have some parallels with DARPA’s earlier Soft Robotics program, although this similarity is not intended as much as arises from a shared focus on futuristic ideas that are based on mimicking Nature. I also believe,” he continues, “that our research ideas are close to some of the goals of the DARPA Programmable Matter program, but we are not supported by or participating in this program – although we hopefully will apply in the future after we have some actuation results.”One of the most-discussed memristor characteristic is its synaptic biomimesis. “State-of-the-art computers have difficulty mimicking the operation of the brain,” Dickey notes. “Memristors, on the other hand, are effective at mimicking synapses. If you were interested in only mimicking brain function, then solid-state memristors would be more practical because they contain many more memory elements and are much more optimized at this point. One of the things distinguishing our work is that the device behaves like a memristor and has other properties similar to the brain. Conventional electronics tend to be rigid, 2-D, moisture-intolerant, and operate using electrons; the brain, in contrast, is soft, 3-D, wet, and operates using ions and in addition to adopting many of these properties, our device is composed of biocompatible hydrogels.”Dickey points out that while the team has not demonstrated any interfacing of their soft-matter devices with biological species, and that it is unclear if it is even possible to interface with the brain, their technology “has many of the obvious properties one would look for this type of interface – including the ability to scale down to 10-100 microns in length. In fact,” he acknowledges, “we’ve just started a project to study the interface of these materials with neurons, but it is too early to comment on it.” Velev is also cautiously optimistic that while he doesn’t foresee medical applications of the soft-matter devices at the moment, he agrees that “hypothetical interfacing with living neurons is possible.” The real strength of the group’s technology, he adds, is that “both neuronal tissue and soft matter use an ionic current to propagate signals. In the near future,” Velev adds, “likely applications include an advanced biocompatible matrix – for biomolecules and living cells, biosensors, and interfaces with mammalian cells other than neurons – immersed in water and biological fluids. While we’re not working on experiments involving live cells right now,” he concludes, “we’re hopeful that this could be a future development – potentially through new collaborations and funding.” More information: Towards All-Soft Matter Circuits: Prototypes of Quasi-Liquid Devices with Memristor Characteristics, Advanced Materials; Article first published online July 4, 2011, DOI: 10.1002/adma.201101257center_img Memristor prototypes based entirely on soft materials. (a) A schematic depiction of the memristive device. Two polyelectrolytes entrapped in a matrix of agarose/H2O dictate the pH values of each hydrogel layer. (b) I-V traces of the device with ±5 V sweeps. The numbers and the arrows represent the order and the direction of the bias sweeps, respectively. The hysteresis of the I-V curves is a characteristic feature of memristors. The dotted line indicates the reading bias of 1 V, where the “memorized” resistance is measured. The sweep rate is 0.04 V/s. © 2011 PNAS, doi: 10.1002/adma.201101257 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. In some circles, memristors (from “memory resistor,” as coined by Leon Chua in a 1971 paper outlining memristive theory) are all the rage – and for good reason: As circuit elements which “remember” the amount of current that has passed through them in the past and show great functional flexibility, memristors show promise for applications as diverse as artificial synapses, nanoscale memory and sensors, and eventually a new class of computers based on neuromorphic architecture. Explore further Soft memory device opens door to new biocompatible electronics (w/ Video)last_img read more