Schmidt Hammer studies in the maritime Antarctic: Application to dating Holocene deglaciation and estimating the effects of macrolichens on rock weathering

first_imgIn order to contribute to the reconstruction of the deglaciation history of the Marguerite Bay area (~ 68°S, Maritime Antarctic) and to estimate the rock weathering rate in this Antarctic sector, 28 sites (7 on Rothera Point and 21 on Anchorage Island) were characterised using Schmidt Hammer values. The weathering effect of two of the most widespread species of macrolichens in this area (Usnea sphacelata and Umbilicaria decussata) was tested at 5 different sites on Rothera Point. Schmidt Hammer data, in conjunction with recent 14C age, suggest a deglaciation age for the Marguerite Bay area of around 12 ka, and an average uplift rate of 5.4 mm year− 1 on Anchorage Island for the period between 3.3 and 5.2 ka. The weathering rates are extremely slow (e.g. three times slower than reported in Norway). Our data confirm that lichens exert a strong impact on weathering, decreasing the Schmidt Hammer R-values on lichenised surfaces by a factor of 3–4 compared to bare rock surfaces. The effect of lichens on weathering is mainly due to edaphic conditions and the type of the lichen involved rather the period of exposure.last_img read more

9 months agoPochettino maintains full trust in Tottenham contract rebel Eriksen

first_imgTagsTransfersAbout the authorFreddie TaylorShare the loveHave your say Pochettino maintains full trust in Tottenham contract rebel Eriksenby Freddie Taylor9 months agoSend to a friendShare the loveTottenham Hotspur manager Mauricio Pochettino has trust in Christian Eriksen amid his continuing negotiations over a contract extension.The Dane stated this week that he was waiting for the club to appease his demands.Eriksen’s current contract expires in 2020 and Pochettino believes he can count on him to perform until then.He said: “We hope that he can be here for a long time.”I think Christian is a fantastic player. I was in Copenhagen in the summer and spent a good time with my wife, and Christian, in a very nice restaurant!”We hope that Christian can commit to the club with a long-term contract – but in football business it is about timings and negotiations.”He is ready to wait. Maybe sign this week, maybe sign in six months.”For me, it is not a point to discuss. He is very committed with us and he is playing so well. He is a great player and I am so happy with him.”He is a special person and you need to give him some freedom on the pitch.”You cannot put him in a box to play, you need to give freedom and trust in him.”It’s like my dog in the park – I say, ‘go, I trust in you!’. Christian, you need to trust in him.”There is going to be a decision, and I hope he will commit to the club for the long term.” last_img read more

Experts differ on Buckeyes chances at BCS bowl berth

Following Saturday’s 38-14 win over Penn State, No. 9 Ohio State was stagnant in the BCS ranks, along with the rest of the top 10. But that doesn’t mean things didn’t change. Rece Davis of ESPN is a strong believer of the same “chaos” theory that brought the Buckeyes to the national title game in 2007. He thinks it could happen again, and the first step was Utah falling to Notre Dame 28-3 last Saturday. TCU, ranked No. 3 in the BCS, beat Utah 47-7 one week earlier. “I think that people have re-evaluated TCU’s resume,” Davis said in a phone interview with The Lantern. “So what that’s done, I think, is it’s opened the door for some of the one-loss teams. “It’s not a high percentage of a chance, but I think there is a chance. Should (TCU and No. 4 Boise State) lose, then you have complete and utter chaos that would be in line with what happened in 2007.” That year, a series of upsets propelled OSU from No. 7 in the BCS to No. 1 in a span of three weeks. For Davis’ theory to come to fruition, three of the four remaining undefeated teams — Oregon, Auburn, TCU and Boise State — would likely have to lose. OSU would have to win impressively this weekend in Iowa, and Wisconsin would have to falter in one of its two final games against Northwestern or Michigan. It would then be up to the BCS to jump the Buckeyes ahead of No. 5 LSU, No. 6 Stanford and No. 8 Nebraska. Davis said he would give the Buckeyes the nod over other one-loss teams because they had been ranked No. 1 before losing to Wisconsin. He said he expects No. 2 Auburn to struggle with Alabama and then South Carolina in the SEC Championship game. He also said Oregon State could give Oregon a run for its money in the annual “Civil War” game, and said a Boise State loss to No. 18 Nevada is a “possibility.” Jerry Palm of CBS Sports said the only way the Buckeyes would go to the National Championship game is if every team ahead of them lost. “I never really thought Ohio State was going to get a lot of juice from (beating) Iowa anyway,” he said. “But giving (the Hawkeyes) their fourth loss instead of their third loss diminishes that,” he said, referring to Iowa’s third loss of the season last week, which came against Northwestern. In his weekly bowl projections, Palm has OSU playing in the Capital One Bowl, Michigan State playing in the Rose Bowl and Wisconsin playing in the Sugar Bowl. If the Buckeyes win the rest of their games, they are guaranteed at least a share of the Big Ten Title — an honor that could help their case for a BCS game. Coach Jim Tressel doesn’t quite buy into what goes into the BCS’ evaluation of teams. “If style points are important with what we have ahead, we’re in trouble, because there’s not going to be much style going into the ball game we’re getting ready to play,” Tressel said of Saturday’s game in Iowa City. Another bizarre twist to the Big Ten race this year is that OSU and Michigan State do not play each other. “Typically, if you miss Ohio State on your schedule, you’ll be jumping up and down,” Davis said. “Preseason, I’m sure Michigan State said, ‘Well, OK, we missed the Buckeyes.’ Now the shoe is on the other foot for both teams. They sort of needed each other and they’re not playing.” Davis said he expects the Sugar Bowl to be “all over Ohio State” if the Buckeyes win out and do not earn a spot in the Rose Bowl. read more

Buckeyes focused on dualthreat quarterback Denard Robinson

As quarterback Denard Robinson goes, so goes Michigan’s offense. Robinson has accounted for 67 percent of his team’s total yards through 11 games this season. Limiting the Heisman contender will be the challenge for the Ohio State defense Saturday. “It’s going to be tough to game plan for him,” senior defensive end Cameron Heyward said. “I don’t know if there really is a weakness.” The difficulty comes from Robinson’s ability to beat you with his legs and his arm. The quarterback is the first player in NCAA history to have more than 1,500 yards passing and 1,500 yards rushing in the same season. The evolution of his passing game is what has OSU defenders worried this season. “You’ve got to watch out because he has turned out as a good passer,” defensive tackle Dexter Larimore said. “He has been able to throw down field like he hasn’t quite been able to in the past couple years.” That improvement has come from more repetitions and more thorough preparation by the sophomore signal caller. “You’ve got to be able to read everything and know where everybody is supposed to be at on the offense,” Robinson said at Michigan’s weekly press conference Monday. “I think that is pretty much what I learned this year.” The fact that Robinson has been able to put both facets of the game together makes him hard to duplicate on the scout team in practice. The Buckeyes have to use more than one player to mimic the Wolverine quarterback. “I’m sure we’ll get some of the wide outs in there doing part of it (and) the running backs,” coach Jim Tressel said. “It’s a tremendous challenge because it gives you all of the problems that a wildcat offense gives you with a great running back … (but) it has all the passing problems.” The Buckeyes will use different scout players to work on Robinson’s running and passing threats separately because it is “impossible to simulate him” in any other way, Tressel said. Unfortunately for OSU, the two skill sets will be combined this Saturday. To slow down Robinson’s dual-threat capabilities, the Buckeyes will have to stay disciplined. “We just have to play assignment football,” senior safety Jermale Hines said. If “guys stay home and guys do their job, everything should take care of itself.” Teammates agreed that a team approach will be essential this weekend. “I think the biggest thing is to be able to play as a team and be able to play a team defense because he’s probably going to make one guy miss or two guys miss,” Larimore said. Discipline aside, Buckeye players realize that completely stopping Robinson is not an option. “He is one of the best players in college football, so it is going to be a huge challenge for our defense,” senior linebacker Ross Homan said. “We know that he’s going to get yards on us, but we just can’t quit.” The ability to dictate how he gets those yards might be the key to beating the Wolverines. In Michigan’s four losses, Robinson has 185 yards rushing a game. That number falls to 138 yards a game in the team’s seven victories. Given this disparity, limiting the passing attack might be more important for the Silver Bullet defense. The players realize that to do so, they can’t let Robinson get off to a quick start. “He gets very hot very quick,” Heyward said. “We have to be ready for both the pass and the run, and he’s got so many different options on the team, it’s going to be tough to stop him.” No matter how they go about slowing down Robinson, OSU players know doing so is the only way to stop the Wolverine attack. “He is definitely what makes their offense go,” Homan said. read more

20millionyearold kangaroo relative found to be a hopper

first_img Phylogenetic timescale of Macropodoidea (white square) depicting the convergent appearance of arboreal/ scansorial locomotion (green) in balbarids and crown Macropodidae (black square). Background colour gradient infers the hypothesized locomotory transition from predominantly terrestrial quadrupedal progression (tan), as characterized by the extant quadruped Hypsiprymnodon moschatus (top right body-form silhouette), to increasingly bipedal saltating gaits (yellow) in crown potoroines and macropodines (bottom right body-form silhouette); this is correlated against a schematic of changing palaeohabitats through time (modified from Kear et al.). Dashed outline indicates uncertain taxonomic assignment of QM F59022 –QM F59025. Graphics produced with Adobe CC2016 by B.P.K. Credit: Royal Society Open Science (2019). doi/10.1098/rsos.181617 Explore further Credit: CC0 Public Domain A team of researchers with the Swedish Natural History Museum and Uppsala University has found evidence of hopping by a 20-million-year-old kangaroo relative. In their paper published in the journal Royal Society Open Science, the group describes their study of fossils unearthed in northwest Queensland, Australia, and what they found. © 2019 Science X Network More information: Climbing adaptations, locomotory disparity, and ecological convergence in ancient stem ‘kangaroos’ , Royal Society Open Science (2019). rsos.royalsocietypublishing.or … /10.1098/rsos.181617 Journal information: Royal Society Open Science Scientists have been puzzling over the history of kangaroo hopping for many years—because of the lack of kangaroo fossils older than 2 million years, though, it has been difficult to pinpoint when they evolved from walking or climbing creatures to animals that stand upright and get around by hopping. Prior research has suggested that the development of hopping was the result of a changing climate—Australia was once a lot wetter than it is today, with forests covering land that is now overrun with grasses. Standing upright in grasslands is advantageous, as can be seen in prairie dog behavior in parts of the U.S.; hopping is a way to move very quickly in such an environment, as observed with rabbits, most of which are also native to grasslands. In this new effort, the researchers have found evidence that suggests hopping might have started long before grasslands took over large parts of Australia, casting doubt on current theories about the evolutionary timeline of kangaroo hopping.The work by the researchers involved studying the fossil remains of an ancient marsupial species called balbarids—they were distant cousins of kangaroos and went extinct approximately 10 to 15 million years ago. Recently, one of the most complete balbarid skeletons ever found was unearthed, providing the opportunity to learn more about both the species and the origin of hopping in Australian creatures. The fossils were dated to approximately 20 million years ago. To better understand how the balbarid and other close relatives likely moved around, the team built models of them based on leg, ankle and other bone shapes. In so doing, they discovered that some of the creatures were likely climbers, others crawlers, and some walked upright and hopped around like modern kangaroos. The researchers suggest these findings mean that the history of kangaroo hopping will have to be revisited, because if ancient ancestors were hopping around 20 million years ago, it seems possible that kangaroos were, too. A new take on kangaroo evolution Citation: 20-million-year-old kangaroo relative found to be a hopper (2019, February 6) retrieved 18 August 2019 from https://phys.org/news/2019-02-million-year-old-kangaroo-relative-hopper.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.last_img read more

Opera with a desi touch

first_imgOpera fused with Indian music is something to watch out for. In a first of sorts, Italian opera singer Gioconda Vessichelli has teamed up with Mika Singh for a Punjabi-English-Hindi number. The soprano singer has recorded a song with Mika Singh to create a fusion singles album, Thori Daru. We got talking with the artiste while she was in the Capital for an event. Excerpts:Tell us something about yourself.My life as an opera singer started very early as I was discovered by the principal of the Music University (Santa Cecilia, Rome) when I was just 14 years old. Normally for opera singing classes you can apply only when you are at least 18 years old because your voice should be a mature voice. I was the youngest opera singer in Italy to get opera singing degree at such early age. I also took training classes to learn the secret of perfect singing technique. I have lots of statues of Ganesha God in my house in Rome. My friend call me ‘the Indian girl’ because everything is Indian in my house in Rome. Later, I was selected among the five people to attend the singing lesson with the biggest opera singer of the world. Also Read – ‘Playing Jojo was emotionally exhausting’ Tell us something about the song Thodi Daaru! Thodi Daaru! with Mika Singh is a clear example of fusion between western music (Opera) and Indian music (Bollywood) that’s why I created the word ‘Bollywoopera style’. Thodi Daaru is a mix of Punjabi, Hindi and rapper part with my particular voice and Mika’s voice. It’s fast, it is fun, and it is different in the real sense combining Punjabi with opera and rap style.  Mika and I collaborated for this music single Thodi Daaru! after meeting at a party, we gelled well since our artistic concept of music and personality matched and we thought to make a song which is different and new for the audiences. Also Read – Leslie doing new comedy special with Netflix You are the first opera singer ever to fuse opera and Indian music, what inspired you for this?I was very influenced by Indian music and always wanted to open my mind towards Indian music, special effects and using the quarter of tone. I always had in a mind to create a fusion between Western and Indian music. The first time I came to India was for a spiritual journey in search of new tunes and a pleasant musical atmosphere. I learnt using the quarter of tone that we normally don’t use in western music. Indian music offers much more shades and nuances. That’s where my chord got attracted towards Indian Music and Bollywood style music. Bollywood music gave me more variety of singing and a texture to showcase my talent in a different and unique style.   Did the difference in languages ever bothered you?I have always been very open to achieve musical influences from other cultures and languages so I have been learning opera songs not only in Italian language but also in other languages. So when I do my concerts they always have a touch of multicultural and unconventional style. The sensation of singing in Hindi is a magic sensation! Even if I speak Hindi thoda thoda (very little). I normally ask for a translation of the lyrics of the song because I want to be sure to give the right feeling and emotion to each and every word of the song while I am singing. How did you come across Mika Singh?Mika and I met at a party. And the musical energy was contagious. He asked me to do a song together. And I agreed to it at once. We gelled well since our artistic concept of music and personality matched and we thought to make a song which is different and new for the audiences. How was the experience working with Mika Singh? How’s he as a co-singer?Working with Mika has been a marvelous experience. He is such a great artiste and good human being. I am so happy because the song is a combination of my vocal skills with Mika’s style of singing making the song more unique and suitable for all kind of people.  According to you, how is opera future in India? What do you think the scopes are?As for opera and Indian music, I think it’s not just a coincidence if the God of Indian music A R Rahman is aware of opera songs, maybe there’s a deep meaning in opera songs and the way in which I have been able to fuse it with Indian music has let me achieve a great success. Indian people have reacted very enthusiastically to the vibrations produced by my kind of opera voice, and I think when a product of art is good it has no boundaries. Who is your favorite musician in India and across?Pavarotti, the biggest opera singer of the world, who has been my teacher, a great artist, a great voice and a great human being.Madonna, an amazing artiste with not a great voice but a great mind and creative potentials. Mika Singh, an artist who can give joy with his voice to listeners. Lots of other Bollywood artistes like AR Rahman, Sonu Nigam, Asha Bhosale and many others.last_img read more

Nigerian held for duping one of Rs 9 lakh

first_imgKolkata: A Nigerian national has been arrested by the Cyber Crime police station of Kolkata Police, for allegedly duping a person to the tune of Rs 9 lakh. According to police, the accused person identified as Echezona Emmanuel Onyendi alias Tony Kevin, had promised the complainant a job and demanded money for the same. After the complainant submitted Rs 9 lakh in the bank account number provided by the Nigerian, all contacts were cut off from his end. Later, the victim lodged a complaint with the Cyber Crime police station. During investigation, sleuths found the mobile number’s location in Bengaluru which was used to dupe the victim. A team then went to Bengaluru and arrested him.last_img read more