18 Dec

Scientist gets mine drainage patent

first_imgProf Jannie Maree has successfully received a patent to treat acid mine drainage.(Image: www.savingwater.co.za) Masters students Vhahangwele Akin Bologo and Dineo Maila, with Prof Jannie Maree.(Image: Prof Jannie Maree) MEDIA CONTACTS • Professor Jannie Maree   Rand Water Chair, Faculty of Science, Tshwane University of Technology  +27 12 382 6343. RELATED ARTICLES • Working towards sustainable mining • CSIR at the World Water Forum • Mining history for new solutionsAneshree NaidooWhen the Witwatersrand Gold Rush began 127 years ago, it birthed the city of Johannesburg, affectionately known in Zulu as eGoli, the City of Gold. But years later, as the ground gave up its last golden nuggets, the abandoned mines have filled up with acidic water that poses a significant pollution threat to the city’s water resources.But South African academics and scientists have been hard at work on solutions to tackle the corrosive mining by-product, and one has successfully applied for, and received, a United States patent for an acid mine water treatment process.A world-leading scientific processProfessor Jannie Maree, Rand Water chair in water utilisation in Tshwane University of Technology’s Faculty of Science, says the magnesium-barium-hydroxide (MBO) process, which removes metals and sulphate from mine water, offered South Africa a technically sound and cost-effective solution for the acid mine water problem.Acid mine drainage is highly acidic water, usually containing high concentrations of metals, sulphides and salts from mining. This acid runoff also dissolves heavy metals such as copper, lead and mercury into ground or surface water, threatening the health of rivers by disrupting aquatic organisms’ growth and reproduction. Further problems include the acidic runoff corroding infrastructure like bridges. Most importantly though, the drainage pollutes groundwater, which contributes to the drinking water supply. In a water-poor country like South Africa this poses a significant problem.So much so that in his 2012 State of the Nation address South Africa’s President Zuma said that R248-million was to be invested over the next two years to deal with acid mine drainage on the Witwatersrand, an extensively mined area in the Greater Johannesburg Metropolitan Area in the province of Gauteng.Gold mining began in 1886 on the Witwatersrand, which stretches 50km from Krugersdorp to the west, to Boksburg to the east. From the 1950s mines across the region started closing down and the last remaining operational mine, East Rand Propriety Mines in Boksburg, closed its operations in 2008.During the mining period, there was infrastructure in place to pump water out of the mines. But as they closed down, the underground voids created from mining operations have filled up as the pumps have ceased. Accumulated water has also flowed into adjacent mines, filling up the entire void.Laboratory success, real world applicationMaree said removing metals and sulphate with the MBO process could produce water that contained levels low enough to be acceptable as drinking water. “This was provided the levels of sodium and chloride in the treated water was low.”He added that the “patented process was used with great success at laboratory level”, where water from coal and gold mines was used. The success of the process success was recorded in Tshwane University of Technology (TUT) postgraduate student Hangwi Bologo’s master’s dissertation.Maree describes the income-generating side to the process, saying “the saleable products from the process would be sulphur, calcium carbonate and the treated water. Depending on the water quality other saleable compounds could be metals and magnesium hydroxide.”He adds: “SA imports its sulphur. Sulphuric acid is produced from sulphur which is an important raw material in the manufacturing of fertiliser.”The water treatment stage is ready for full-scale implementation.  The thermal stage where barium sulphate is processed to barium hydroxide needs to be demonstrated on a pilot scale.  This will be done by September 2014. For full-scale implementation the process will compete with technologies such as reverse osmosis, ion exchange and biological sulphate removal.Acid drainage filtrationAnother academic working on, among others, the acid mine drainage problem, Professor Sunny Iyuke of the University of the Witwatersrand School of Chemical and Metallurgical Engineering, has, with the help of PhD students, developed a membrane to separate waste from water. The membrane has applications across industry, water purification and even medicine.According to Iyuke the membrane (similar to a household water filter) could be used to catch water waste from mines before it entered drains or the water table.last_img read more

3 Dec

Nine men acquitted in Noida gangrape case

first_imgA Noida police officer left “no stone unturned” to botch up investigation in a 2009 case of gangrape of a 24-year-old MBA student that has led to the acquittal of nine persons by a Delhi court on the grounds that the identity of the real culprits could not be proved.The court pulled up the police for not following proper procedure of law while investigating the matter and said no judicial Test Identification Parade (TIP) of the accused was conducted by the investigating officer (IO).The court held that the IO had left “no stone unturned for making this case impossible to be proved” and directed Noida Senior Superintendent of Police to take appropriate action against IO, inspector Anil Samaniya, for his improper probe in the case.“These factors clearly show that due to the negligent, casual and unprofessional investigation conducted by the IO, real culprits of the case could not be identified/arrested or subjected to administration of justice,” Additional Sessions Judge Shail Jain said, adding that this was “a classic case” of botched up investigation by the IO.However, the judge was all praise for Special Public Prosecutor Neelam Narang, saying she provided valuable, substantial and useful help in explaining the lengthy case in a summarised manner.last_img read more

7 Nov

Tight at the Top – Australian Women’s Snatch Last Gasp Victory

first_imgRelated LinksWomen’s Match Report In a very tight tussle, it was Australia who somehow managed to keep their composure under fire and close out an amazing win considering they only hit the lead late in the second half. For coach, Swain Rovelli it was welcome relief and a good win first-up. “It was good to get that one over with and it’s good to get started with a good win.“We were ready to go but then we started to settle and once we got a read on what we had to do, we got on top and took it away from there.“Our changeovers were a bit slow and once we started going direct and once we nailed that, we knew that we could score tries and hold them out.“We knew what we needed to do and where to get to and thankfully Marikki’s try sealed it at the end for us.”New Zealand came firing out of the blocks early against Australia with Tenika Willison and Charlotte Davis crossing early for the Kiwis.The captains quickly got in on the act with Lizzie Campbell crossing the stripe in the middle section then New Zealand captain, Jean Marsh following Australia’s Hayley Maddick’s touchdown on debut.Tenika Willison went over for her double and was then followed by Samantha Hopkin on the spot of Campbell’s earlier touchdown.In the second half it was Mia Johnstone who then drew Australia level with New Zealand at 4-all with 13 minutes remaining.Shellie Davis put Australia in front for the first time in the match scoring her first Trans Tasman touchdown soon-after with Leah Percy pushing Australia out by two (6-4).The Kiwis’ Hayley Lee was the recipient of a great long ball left crossing out wide edging New Zealand closer before Charlotte Davis scored locking the game up at 6-all with minutes remaining.Then at the very death and following the script of the earlier Mixed Open match, Marikki Watego crossed right on full-time to deliver Australia a last gasp 7-6 victory and an opportunity to wrap the series up tomorrow.FINAL SCORE: Australia 7 (Campbell, Hopkin, Maddick, Johnstone, Percy, S Davis, Watego) defeated New Zealand 6 (C Davis 2, Willison 2, Marsh, Lee) last_img read more

14 Oct

Laurie Odjick talks about upcoming roundtable on MMIW

first_imgAPTN National NewsFamilies from across Canada are in Ottawa to take part in a gathering of families, the public and politicians to talk about the issue of missing and murdered Indigenous women.Laurie Odjick’s daughter Maisy disappeard in 2008 along with her friend Shannon Alexander.APTN’s Delaney Windigo talks with Laurie about the gathering and what she’s hoping for.last_img

28 Sep

What Betting Markets Think LeBron James Will Do

The big question right now is whether LeBron James will stay with the Miami Heat or return to the Cleveland Cavaliers. Despite the fact that his departure from the latter in 2010 seemed to have burned a few bridges, some fans appear to have forgiven James and are hoping for his return.How likely is James to return to Ohio? That’s a difficult question, but we can try to get a rough sense from betting markets. The Cavs and the Heat aren’t the only contenders. Here’s an average of the latest betting lines on where James will play next season, converted into probabilities:Oddsmakers seem to think James is about a 50-50 bet to stay with the Heat. Cleveland has some hope, and the remaining teams not much. But if history is any indicator, both Miami and Cleveland might have reason to worry.James had to make a similar decision in 2010, and betting markets didn’t get that one right.Bettors thought James would stay put in 2010 as well. But the difference in spread is notable. Based on these numbers, bettors are 11 percent more confident in his loyalty than they were in 2010. The second most likely options in both scenarios make up for this difference, with the Chicago Bulls at a 24 percent chance in 2010 and the Cavs at a 16 percent chance currently.Just like these betting sites, we’ve had mixed success in predicting James’s moves. Until his announcement, it’s worth considering that maybe we don’t know the MVP quite as well as we think we do. read more

28 Sep

Football How much will special teams impact the Fiesta Bowl for Ohio

Penn State freshman punter Blake Gillikin (93) and OSU redshirt sophomore wide receiver Terry McLaurin (83) rush towards the ball after a blocked punt in the second half of the Buckeyes game on Oct. 22. The Buckeyes lost 24-21. Credit: Alexa Mavrogianis | Photo EditorSCOTTSDALE, Ariz. — For weeks, much of the talk for the PlayStation Fiesta Bowl has been about the offensive and defensive capabilities of both No. 3 Ohio State and No. 2 Clemson. However, there has been little discussed in terms of special teams, the unit that the Buckeyes take extremely seriously. Kerry Coombs, the secondary and special teams coach for the Buckeyes, has a knack for coaching some of the best special teamers in the nation year after year. According to him, the effort of his gunners and kick coverage unit could make the difference in a game as evenly matched as OSU versus Clemson.“I think they’re very, very good just like I think we’re very, very good,” he said. “I think there’s going to be a couple of areas in the game … I know that their national championship game last year hinged on some big special teams plays. I think that our kids are extremely well prepared, and I know that there’s are too. So, it’s going to be a lot of fun. I think it will be a factor in the game.”One of the biggest weapons on Coombs’ special teams unit is senior punter Cameron Johnston. Johnston, a native of Melbourne, Australia, who has been punting for the Buckeyes for four years now, and is in his fifth year with the team.Averaging a career-best 46.2 yards per punt in 2016, the Australian born punter has a few goals in mind against Clemson. The most prominent of those goals is limiting the returning ability of the Tigers’ returners.“You never know how many times you’re going to punt, but when you do, you got to make sure it’s in the right area,” Johnston said. “If you get zero return yards for the day, you’ve had a good day.”While netting zero return yards on punts has a lot to do with how the ball is kicked and the trajectory it takes before striking the turf the proper way, having help from teammates is necessary to limiting return yardage. Wide receivers like redshirt sophomore Parris Campbell and Terry McLaurin have been instrumental on kick coverage success, playing predominantly at the outside coverage positions.The players at those positions, known predominately as “gunners,” are known for their speed and athleticism, as well as the ability to hunt down the ball and bring down the returner quickly, or forcing him towards the middle of the field. For McLaurin, the chance to cut his teeth as a special teamer has resulted in his development as a well-rounded player.“You kind of get your feet wet playing special teams,” he said. “Once you start making plays on special teams, you’re going to be making plays on offense. You see it all the time with guys coming through this program. That’s what we preach about competitive excellence.”Although the Buckeyes have yet to score on a punt return this year, it is worth noting OSU has not given up a touchdown on a punt either this season. Part of that statistic has to do with McLaurin’s ability, while another part comes down to how well Johnston has played.With a punter like Johnston who is a master at hang-time on punts, as well as a speedy player on the outside to get to the returner quickly, OSU might very well dictate the game. Pinning an offense deep in its own territory is something that Coombs feels could be the difference maker come Saturday.“All the difference,” he said. “And not just big (plays), but just the innate field position difference. If we can gain yards with special forces throughout the game, which is our objective, it doesn’t show up as a big play. But it makes a dent in the scoreboard.”OSU squares off against Clemson in the Fiesta Bowl on Saturday at 7 p.m. in the University of Phoenix Stadium. read more

28 Sep

Wrestling Full results for all nine Ohio State wrestlers from the NCAA

OSU junior heavyweight Kyle Snyder lifts Wisconsin’s Connor Medbery before slamming him to the mat for a takedown in the heavyweight finals of the 2017 NCAA Division I Wrestling Tournament in St. Louis, Missouri. OSU placed second, behind Penn State. Credit: Courtesy of OSU AthleticsST. LOUIS — Ohio State finished second at the 2017 Division I NCAA Wrestling Championships and sent a total of nine wrestlers to the event. Five of those went on to be named All-Americans, four placed in the top three of their weight classes, and one won a national championship.125 poundsOSU’s redshirt freshman Jose Rodriguez went into the tournament unseeded and lost 13-4 in the first round of the championship bracket to American University’s No. 11 Josh Terao. Rodriguez was able to get a single victory over Ohio’s Christian Moody, but was later pinned by Nebraska’s No. 5 Tim Lambert.133 poundsRedshirt junior Nathan Tomasello entered the tournament with a perfect regular season record and a Big Ten championship. He beat Illinois’ No. 8 Zane Richards by a score of just 3-1 in the quarterfinals after getting major decision victories over his first two opponents.In the semifinals, it was a Big Ten championship rematch with Iowa’s No. 4 Cory Clark. Tomasello beat Clark at Big Tens 5-4 on a last-second escape, but Clark fought to a different outcome at the NCAA tournament with a 7-4 decision.In the consolation bracket, Tomasello took down Nebraska’s No. 7 Eric Montoya and Michigan’s No. 5 Stevan Micic in the finals to finish in third place for the second consecutive year.141 poundsOSU freshman Luke Pletcher entered the tournament as a No. 12 seed and defeated Michigan’s Sal Profaci 8-5 in the first round, but lost to All-American Anthony Ashnault from Rutgers.In the consolation bracket, Pletcher was able to pick up another win over Iowa’s Christopher Carton, but Penn State’s Jimmy Gulibon upset him in his second consolation match.149 poundsRedshirt sophomore Micah Jordan came into the tournament as a No. 4 seed and, as a recent Big Ten runner-up, looked dominant early.Jordan put together a technical fall over North Carolina’s Troy Heilmann, and then defeated Maryland’s No. 13 Alfred Bannister with a 10-2 major decision.In the quarterfinals, Jordan faced off against Iowa’s Brandon Sorensen. Jordan lost to Sorensen in their regular season matchup, but notched a win at the Big Ten championships.Jordan lost, this time 3-0. In the consolation bracket, Jordan beat Lehigh’s No. 10 Laike Gardner 9-6, getting a technical fall over South Dakota State’s Alex Kocer and a major decision over Northern Illinois’ Max Thomsen.In the consolation finals, Jordan faced Sorensen yet again, and was held scoreless for the second time, losing 4-0. 165 poundsOSU redshirt sophomore Cody Burcher entered the tournament as an at-large qualifier and unseeded, and seemed outmatched by the competition. Burcher was held scoreless by Arizona State’s No. 7 Anthony Valencia in the first round, losing 11-0.In the consolation bracket, Burcher fared a little better, but still lost his first matchup 2-1 to Ohio University’s Yoanse Mejias.174 poundsRedshirt junior Bo Jordan came into the tournament as a Big Ten champion for the first time, and carried a No. 3 seed along with only one loss on the season.Jordan earned a 10-1 major decision over Harvard’s Josef Johnson in the first round and a 10-4 decision over Iowa State’s No. 14 Lelund Weatherspoon in the second.In the quarterfinals, he continued marching along, beating Iowa’s No. 11 Alex Meyer with a 4-3 decision. In the semifinals, Jordan faced off against Cornell’s Brian Realbuto, who handed Jordan his only loss of the season.Jordan fought from behind for most of the match, but employed an acrobatic takedown in the last 20 seconds that also saw him pick up near-fall points to secure a 11-7 victory.In a Big Ten championship rematch, Jordan and Penn State’s Mark Hall faced off for the national title at 174. Jordan won the Big Ten bout, but Hall was able to win, 5-2.184 poundsHopes were high for No. 6 seed Myles Martin at the 2017 NCAA tournament, after winning a national championship as a true freshman in 2016, becoming the first Buckeye to ever do so.Looking impressive in his first matchup, he was two points away from a technical fall over Bucknell’s Garrett Hoffman.Martin’s run was spoiled by Illinois’ No. 11 Emery Parker in the second round, losing 14-9.In the consolation bracket, Martin took down Penn’s Joe Heyob with a tech-fall before a 12-3 major decision of Edinboro’s No. 14 Dakota Geer.Next, Martin faced a fellow All-American in Northern Illinois’ Drew Foster, and was able to come out victorious after surviving a sudden victory period.Martin’s charge was stopped short by Iowa’s No. 3 Sammy Brooks. At the NCAA tournament, Brooks defeated Martin with a 6-2 decision to send Martin to the fifth-place match.There, Martin impressed once again, getting some much-needed team points over Oklahoma State’s No. 4 Nolan Boyd and winning with a 10-6 decision.197 poundsRedshirt freshman No. 3 Kollin Moore, who recently won a Big Ten championship in his first year of competition, barrelled through the first two rounds of the tournament with a 16-6 major decision over North Carolina State’s Malik McDonald and a 16-4 major decision over Oregon State’s No. 14 Corey Griego.In the quarterfinals, Moore faced a tougher challenge in Oklahoma State’s No. 6 Preston Weigel, but picked up a 13-5 major decision.In the semifinals, a rematch with Minnesota’s No. 2 Brett Pfarr, the Gophers avenged his loss at the Big Tens with a 13-9 decision over Moore.In the consolation bracket, Moore pinned Virginia Tech’s No. 4 Jared Haught in the first period en route to a third-place finish as a freshman. He suffered only four losses on the season, all four against Pfarr and 197-pound champion J’Den Cox of Missouri. HeavyweightNo. 1 seed and junior Kyle Snyder entered the tournament with sky-high expectations. A world and Olympic champion, he had an undefeated season for the Buckeyes.After getting through the first two rounds with technical falls, Snyder sustained a rib injury against Colorado’s No. 16 Garrett Ryan.In the third match, Snyder looked dominant for the first two periods, but his injury began to show in the third, during which he failed to record a point and was ridden out by Minnesota’s No. 8 Michael Kroells, but still won 13-7.That would be the last time the injury seemed to bother Snyder.In the semifinals, Snyder rolled over Duke’s No. 4 Jacob Kasper 19-6 and advanced to face Wisconsin’s No. 2 Connor Medbery in the NCAA Finals.Yet another Big Ten championships rematch, and this one went in favor of the Buckeyes. Snyder tallied two takedowns en route to a 6-3 win over Medbery and his second consecutive national championship at 285 pounds. read more

18 Sep

For Guardiola Fernandinho is very important

first_imgThe Manchester City manager believes the Brazil midfielder is not certain to face Southampton on SundayBrazilian midfielder Fernandinho is injured.But he trained with Manchester City on Saturday and might be able to face Southampton tomorrow.“It is not necessary to lose three games from four to say how important Fernandinho is to us,” Guardiola said to The Standard.Premier LeaguePremier League Betting: Match-day 5 Stuart Heath – September 14, 2019 Going into the Premier League’s match-day five with a gap already beginning to form at the top of the league. We will take a…“It is a specific position, we don’t have his qualities again. He is an incredible player.”“We tried but when players don’t want to come what can we do?” Guardiola spoke about trying to cover him.“I never in my career with Barcelona or Bayern Munich, I never complain about what they try to do, the clubs.”“They do their best because they want to win too. They try to provide me with the best team possible and they did it,” Guardiola added.last_img read more

13 Sep

Senate House Working On NDAA Defense Funding This Week

first_img ADC AUTHOR The Senate Armed Services Committee kicked off Capitol Hill’s defense legislative activity Monday afternoon as the Readiness subcommittee began markups of the fiscal 2020 National Defense Authorization Act in a closed Monday afternoon session.Tuesday morning the House Appropriations Committee finalizes its defense spending bill, hoping to complete it before the upcoming Memorial Day recess. The House will debate its bill in a public hearing.The Senate Armed Services Committee’s fiscal 2020 NDAA markup and most of its subcommittee activity will be closed except the Personnel panel which will hold a public markup Tuesday afternoon.The House defense appropriations bill and Senate’s NDAA draft are both key to setting fiscal 2020 DOD funding, though final appropriations aren’t expected until next fall. Once approved, the measures will establish defense spending toplines for the GOP-led Senate and Democrat-led House, and will tee up negotiations over the summer.Here is a roundup of the important hearings taking place on Capitol Hill this week:House Transportation Committee hearing with Coast Guard officials testifying on the fiscal 2020 budget, Tuesday, 10 a.m.House Appropriations Committee markup of the defense appropriations bill, Tuesday, 10:30 a.m.House Armed Services Committee/House Veterans’ Affairs Committee joint hearing with DOD and VA experts testifying on preventing veteran suicide, Tuesday, 2 p.m.Senate Armed Services Committee Personnel subcommittee markup of the fiscal 2020 NDAA, Tuesday, 2:30 p.m.Senate Armed Services Committee closed-door markup of the fiscal 2020 NDAA, Wednesday, 9 a.m.House Veterans’ Affairs Committee hearing on implementation of the VA Mission Act, Wednesday, 10 a.m.House Veterans’ Affairs Committee hearing with oversight agencies testifying on ideas to improve VA efficiency, Wednesday, 2 p.m.Senate Veteran’s Affairs Committee hearing on a series of VA health and benefits bills, Wednesday, 2:30 p.m.last_img read more

5 Sep

HDFC cuts home loan lending rate by 25bps after RBI rate cut

first_imgIndia’s largest mortgage lender, HDFC, has reduced its lending rate on housing loans by 25 basis points to 9.65%.The new rate, which is applicable to both existing and new customers, will be effective from Tuesday. Women borrowers are eligible for an additional 5bps cut in home loan rates, HDFC said.Following the cut, the effective home loan rate for female customers now stands at 9.60%.HDFC’s rate cut move comes in the wake of last week’s 50bps reduction in repo rate by the Reserve Bank of India (RBI). Soon after the central bank’s rate cut decision, many banks like the State Bank of India (SBI), Bank of India and Andhra Bank announced a reduction in their base rate.While the country’s largest lender, SBI, slashed its lending rate by 40bps, Andhra Bank reduced its base rate by 25bps. Private sectors banks like Axis Bank and ICICI Bank have reduced their benchmark lending rate by 35bps each.With the latest cut, the RBI has slashed the repo rate by 125bps to 6.75% so far this year. The central bank, however, kept the cash reserve ratio (CRR) unchanged at 4%.However, transmission of RBI rate cuts by banks to end users did not keep pace, as lenders remained sceptical about credit uptake even after large base rate cuts.Prior to RBI’s September meeting, the banks had cut the base rate by just 30 bps on an average compared to 75bps cut in the central bank’s repo rate, Business Standard reported.Bank credit growth, a major indicator of economic growth, slowed to a two-decade low in the fiscal year ending March 2015. In 2014-15, credit growth was up 9.52%, down from an increase of 13.83% in 2013-14.last_img read more