zoom Thirteen crew members on a ferry operated by Pan-European shipping company P&O Ferries have failed drugs testing, a representative from P&O Ferries revealed.The members of the crew onboard the 1991-built Pride of Canterbury, who were tested on two sea crossings between UK’s Dover and France’s Calais on December 8, 2016, recorded “non-negative” drugs tests.“As part of routine drugs testing of our crews, 13 individuals on the Pride of Canterbury recorded non-negative tests, which have now been sent for further analysis,” a P&O Ferries spokesman told World Maritime News.“P&O Ferries operates a zero tolerance policy towards substance abuse and any employees not complying with it will be dismissed,” the spokesperson added.Originally serving P&O’s old Dover to Zeebrugge route as a freight ship, the Pride of Canterbury was refurbished and converted to a cross-channel passenger ship, joining its sister ship the Pride of Kent in 2003.Including the Pride of Canterbury, which is able to accommodate 2,000 passengers and 600 cars, the company operates a fleet of more than twenty ferries.World Maritime News Staff
The Nova Scotia Film Development Corporation and Empire Theatres are hosting a free screening of the science fiction documentaries Best Evidence and Famous Monster on Wednesday, May 30, at 7 p.m. at the Oxford Theatre. Best Evidence, produced by Halifax’s Paul Kimball, features some of the world’s leading UFO experts, including Stanton Friedman, Dr. Bruce Maccabee, Nick Pope, and Mac Tonnies. The film includes a number of very credible military witnesses discussing the cases that the debunkers never want to talk about. Stanton Freidman and Mr. Kimball will be on hand before and after the screening to answer audience questions. Famous Monster, produced by Halifax’s Michael MacDonald, looks at the life of science fiction legend Forrest J. Ackerman, the man who coined the phrase “sci-fi”, and his influence on the genre. The film features interviews with many sci-fi experts, including Ray Bradbury, Roger Corman, Joe Dante, and Mr. Ackerman himself. Mr. MacDonald will be at the screening to answer audience questions. Presented by the film development corporation and Empire Theatres, screening nights are held four times a year. The screenings allow local audiences to see homegrown film productions and help local filmmakers promote their work.
OTTAWA – The Trudeau Liberals are being accused of caving in to pressure from the high-powered pharmaceutical industry in Washington at the expense of Canadian patients suffering debilitating medical conditions and those struggling to foot the cost of their pricey medications.The proposed United States-Mexico-Canada Agreement extends a so-called “market exclusivity” period for high-class biologic drugs to 10 years from eight — a move that applies to medicines increasingly used as a lifeline for patients with chronic conditions including rheumatoid arthritis, Crohn’s disease and cancer.The measure means generic producers would have to wait an additional two years to produce similar drugs at lower costs to consumers, as they won’t have access to crucial data needed to do so.Members of the medical world and opposition MPs are calling on the government to do everything it can to soften the impacts of the decision, fearing it will have sweeping ripple effects.Allowing drug companies to keep valuable data to themselves for an extra two years is a step away from an affordable national pharmacare plan, said Canadian Generic Pharmaceutical Association president Jim Keon, who sees the move as a direct reaction to pressure from the U.S.“This measure was put into this agreement at the demand of the United States government, at the demand of the pharmaceutical industry in the United States, at the demand of the pharmaceutical lobby in Washington,” he said.“This is a step in the wrong direction.”In June, the Liberal government unveiled a six-member advisory council to consult Canadians and inform plans for a national pharmacare program.Extending the length of time a drug-maker can shield information is a mistake that will mean higher drug costs for provinces, territories, employers and employees who cost-share drug plans, added NDP health critic Don Davies.“The bottom line is when Canadians are already paying among the highest prices for drugs in the world and we already know that one in four Canadians is skipping medication due to cost, why would the Liberals agree in a trade agreement to a measure that is going to make drug costs more expensive?” he said. “That’s what they have done.”Conservative health critic Marilyn Gladu said drug companies must be able to recoup research dollars they put into producing medications.Even so, she’s not sure the government struck “the right balance.”“Certainly it will result in higher costs even by delaying generics for a couple years,” she said.“The question is, ‘Is it merited in order to keep getting these new biologic-type medicines that are so badly needed?’”However, both Keon and Davies point to figures from the Patented Medicine Prices Review Board indicating that the amount spent by pharmaceutical companies in Canada on research and development, relative to sales, has been falling since the late 1990s.The Liberal government erred by not leveraging the decision in the new trade deal around biologics into more research funds, Davies added. “It is a lose, lose for Canadians.”A spokesperson for Health Minister Ginette Petitpas Taylor said Thursday the government is working to bring drug costs down by working with provinces and territories to negotiate lower prices.Foreign Affairs Minister Chrystia Freeland said this week it is a crucial issue for the government.“We also look forward to attracting further medical research to Canada,” she said Tuesday. “Our government will also stand up for our public health care system.”— Follow @kkirkup on Twitter
OTTAWA — An independent panel of experts is recommending the federal government increase the scope of tax credits being made available to help small news-media outlets survive.It its final report to the government, issued today, the panel says small publications should be allowed to count freelancers and independent contractors among their journalists in order to qualify as Canadian journalism organizations under the tax credit program.The panel recommends the rules determining who should qualify as a donor to a journalistic outlet with charitable status be expanded.And it says the Canada Revenue Agency should be given responsibility for determining which organizations qualify for funding, with the aid of an advisory body.Finance Minister Bill Morneau included measures in his latest budget, worth an estimated $600 million, to support news media outlets that have faced a revenue crisis in recent years.A panel of experts was then appointed to help guide the government in determining how the tax measures should be implemented.The Canadian Press
Rabat – The first round of the race-hard-or-go-home championship, the 2018 World Touring Car Cup (WTCR), clocked out in Marrakech on Sunday, with Gabriele Tarquini taking home the ultimate victory.During the first race on Saturday, 25 pilots competed under the names of the brightest auto manufacturers in the world, including Honda, Audi, Volkswagen, Seat, Alfa Romeo and Hyundai. After 20 laps of intense focus and tension, Gabriele Tarquini from the Hyundai team, managed to take the lead with a 1.338-second lead on his teammate Thed Bjork. Rob Huff from the Volkswagen team finished 3rd, 2.823-seconds behind Tarquini. The Moroccan driver, Mehdi Bennani, raced with the fabulous Volkswagen Hatchback Golf GTI, unfortunately not performing as expected; he finished 9th, 15.025 seconds behind the first-place pilot.The second race was a bit more competitive, with the opening race winner comes at the last position, while hometown favorite Mehdi Bennani came in second, just 0.890 seconds behind of Jean-Karl Vernay.Tarquini made a great comeback during the third race, again placing first, ahead of his team-mate Yvan Muller. Meanwhile, Bennani finsihed sixth.Read Also: Morocco’s Michael Benyahia to Participate in Marrakech Formula-E RaceThe home hero Bennani maintained his positivity and ambition, promising better results in the upcoming races.“It’s a very good result to start with,” said Bennani, adding, “we need something very strong to start the championship and to start with a podium and points means we can be there and we will be fighting.“It was very tough for sure because I started a bit in the middle for both [Sunday] races but I tried to manage not to have big contact, for sure we had some small contact, but I can finish the race and I can score points and keep fighting.”Bennani continued by thanking his fans for their support and trust, and by offering them his second-place win as a token of gratitude for their encouragement.“It was very good because this is the only way I can thank people for trusting in me and to support me from here and far away. I am very happy that I can give them a little bit of thanks with this second position and I hope it’s going to be better and better during the year.”The event was marked by Hyundai’s first appearance as a circuit racing sponsor, entering into one of the fastest-growing categories in motorsport. The newbie has shown great performances so far, as evidenced by its great results during the races, topping off the first three places of the WTCR’s third race with its all new Hyundai I30 N.The next scheduled races will be hosted in Hungaroring, Hungary, on April 28-29.
“The plan should have clear targets to address the security, property and reintegration issues that would allow people to return in safety and in dignity,” the UN High Commissioner for Refugees, António Guterres, said today, at the end of a three-day visit to Iraq, referring to both Iraqis displaced abroad and inside the country.During the visit, Mr Guterres – who heads the UN Office of the High Commissioner for Refugees (UNHCR) – met with President Jalal Talabani, Prime Minister Nouri Al-Maliki and Foreign Minister Hoshyar Zebari. He also held talks with the designated chairman of the National Council for Strategic Policy, Iyad Allawi.Mr. Guterres proposed the plan of action during meetings with the leaders. He said he was encouraged by the concern expressed by government officials over incidents of violence targeting Iraqi minorities; and he also welcomed the formation in December of the new Iraqi coalition government after months of political deadlock.“This new government represents an enormous opportunity for Iraq, but also for our work,” the UN refugee chief said. “I hope today we are marking the beginning of the end of the displacement chapter in Iraq.”Almost 200,000 Iraqis are registered as refugees with UNHCR, mainly in Syria, Jordan and Lebanon. Additionally, UNHCR estimates there are around 1.3 million internally displaced Iraqis, with 500,000 of them living in extremely precarious conditions.“These people are living in dramatic circumstances. They are homeless or living in slums and feel a high level of despair,” said Mr. Guterres. “We need to provide more humanitarian assistance to the most needy groups.”The proposed plan of action, which UNHCR would help implement, should also include a strategy for people displaced within Iraq to integrate in the areas they sought refuge if they preferred to remain where they are, the UN High Commissioner said, stressing that any returns should be voluntary. While in Iraq, the refugee chief visited the Um Al-Baneen camp in central Baghdad, where 112 internally displaced Iraqi families live in dilapidated former military buildings. He welcomed a decision by the government to suspend their eviction until a solution can be found to relocate the families, many of whom lack documentation and have no source of income.UNHCR has prioritized shelter projects in Iraq, having funded the building or reconstruction of 20,000 two-bedroom homes in areas affected by conflict across the country to date.Guterres noted that while the numbers of Iraqi refugees in neighbouring countries had gone down, their vulnerability had been rising. UNHCR’s registration database of Iraqi refugees shows that 34 per cent of them were considered to be vulnerable, including thousands of people with critical health conditions and a significant number of female-headed households.The majority of Iraqi refugees in Syria and Jordan fled more than three years ago. Many have found it hard to find work, making them reliant on dwindling savings and the support offered by international organizations and local aid groups. One of the consequences of their poverty is that a growing number of refugee children have left school to find casual work to help feed their families. While almost 90,000 Iraqi refugees have returned to their country in the past three years, the rate of return has slowed recently and new asylum-seekers continue to register with UNHCR in neighbouring countries. More than 456,000 internally displaced Iraqis returned to their areas of origin between January 2008 and December 2010. 24 January 2011The UN’s top refugee official has proposed a government-led plan of action to enable thousands of displaced Iraqis to return to their homes in the Middle Eastern country.
15 February 2012The United Nations tribunal set up in the wake of the Balkan conflicts of the 1990s announced today that the trial of Ratko Mladic, the former Bosnian Serb military chief who is facing charges of genocide and other war crimes, will begin on 14 May. In a statement the International Criminal Tribunal for the former Yugoslavia (ICTY), which is based in The Hague, said it had changed the start date – the trial was previously expected to begin in late March – to allow both sides to complete their pre-trial preparations.Prosecutors told the court last week that they expect to call more than 400 witnesses and present nearly 28,000 exhibits during the trial, and they anticipate they will need about 200 hours of tribunal time to present their case.Mr. Mladic, 68, is accused of carrying out genocide and other crimes against Bosnian Muslims, Bosnian Croats and other non-Serb civilians between May 1992 and late 1995.The indictment against him alleges that Mr. Mladic led forces that conducted the notorious massacre of more than 7,000 Muslim men and boys in the supposed safe haven of Srebrenica in July 1995 in the most notorious episode of the war.The former army chief also faces charges for the shelling and sniping of Sarajevo during the protracted wartime siege of the city.In addition, the indictment lists more than 70 incidents of murder in 20 municipalities across Bosnia and Herzegovina, and accuses forces under Mr. Mladic’s supervision of torturing, mistreating and physically, psychologically and sexually abusing civilians confined to detention centres.Defence lawyers had argued that the health of Mr. Mladic be considered in determining the trial’s schedule, but ICTY judges said they were not convinced that his health condition required modification of the schedule.Mr. Mladic was arrested in May last year in Serbia after evading capture for 16 years. In July, at a court hearing, a plea of not guilty was entered on his behalf.
On the markets at 9:50 a.m. (ET):In Toronto, the S&P/TSX composite index was up 30.28 points to 15,800.64.The Dow Jones industrial average was up 1.88 points to 22,832.56.The Standard & Poor’s 500 index was down 0.55 of a point to 2,550.09.The Nasdaq composite index was down 2.92 points to 6,584.33.The Canadian dollar was trading at 80.03 cents US, up from Tuesday’s average price of 79.99 cents US.
The Bodu Bala Sena (BBS) is to stage a protest in Vavuniya tomorrow against Northern Province Chief Minister C.V. Wigneswaran.The BBS said that the protest will be staged to express opposition to the recent statements reportedly made by Wigneswaran. Wigneswaran is reported to have said recently that Sinhalese families should not be settled in the North and that Buddhist Temples should also not be erected in Tamil dominated areas.His comments drew criticism form the Government and opposition and raised fears it will open the doors for ethnic tensions. (Colombo Gazette) The BBS said that the protest will look to draw attention to the need to protect the “minority Sinhalese” community in the North. BBS General Secretary Galagoda Aththe Gnanasara thero is to lead the protest.
The Speaker calculated the votes based on a ‘voice vote’ as he could not have the vote by name as Government Parliamentarians disrupted the proceedings. When proceedings began the Speaker made a statement and then Tamil National Alliance (TNA) Parliamentarian M.A. Sumanthiran proposed that the standing orders of Parliament be suspended and the rest of the days proceedings to continue. Following a division on the proposal, the Speaker ruled that the vote on the no-confidence motion against the Government be taken today.A majority of the MPs voted in support of the no-confidence motion.United National Party (UNP) Deputy Leader Sajith Premadasa later told reporters that the Government clearly lost the floor test. Speaker Karu Jayasuriya ruled today that the Government did not have the majority in Parliament.He gave the ruling after a no-confidence motion on Prime Minister Mahinda Rajapaksa was taken for a vote when Parliament began sessions today. The Speaker then called for a vote to back Sumanthiran’s proposal and the proposal received majority support, the Speaker’s office said.Janatha Vimukthi Peramuna (JVP) leader Anura Kumara Dissanayake then tabled the no-confidence motion against the Government and asked that the vote on it be taken today. He said that Prime Minister Mahinda Rajapaksa must now step down as he does not have majority support in Parliament. (Colombo Gazette)
MSc Mineral Exploration and Mining Geology (revised)The Department of Earth Sciences has submitted a revised Statement of Intent that it wishes to introduce a new graduate program.Please view the Statement of Intent for the MSc Mineral Exploration and Mining Geology.The previous Statement of Intent was published on Aug. 20, 2012.As part of the approval process, the statement is being made available for the information of the University community to allow the opportunity for comment prior to moving to the next step of the internal quality assurance process.Comments on the proposal must be submitted by 4:30 p.m. on Dec. 13, 2012 to: ARC-SOI@brocku.ca and Joffre Mercier, Associate Dean, Graduate Studies, Faculty of Mathematics and Science.Masters in Applied Statistics (revised)The Department of Mathematics has submitted a revised Statement of Intent that it wishes to introduce a new graduate program.Please view the Statement of Intent for the MSc in Applied Statistics.The previous Statement of Intent was published on July 10, 2012.As part of the approval process the statement is being made available for the information of the University community to allow the opportunity for comment prior to moving to the next step of the internal quality assurance process.Comments on the proposal must be submitted by 4:30 p.m. on Dec. 13, 2012 to: ARC-SOI@brocku.ca and Joffre Mercier, Associate Dean, Graduate Studies, Faculty of Mathematics and Science.
When Nokia announced the PureView 808 with its whopping 41MP sensor and Carl Zeiss optics, they said it was “reasonable to expect” that they’d be offering something similar up in the future with Windows Phone. Assuming these freshly-leaked images from a Nokia slideshow are legit, the company already has something in the works.You can clearly make out the PureView bulge on the back of this phone, and there’s no mistaking the Windows Phone button on the front face. A second slide also mentions Windows Phone, though not a specific version — so it could arrive soon with 7.5. It’s also possible that this is one of the two mysterious Windows Phone 8 Apollo devices (codenamed Prodigy and AC/DC) that popped up just a few weeks ago.The second slide also reveals some additional hardware specs, including an Adreno 320 GPU. Right now that’s part of the Qualcomm Snapdragon S4 Pro SOC, which means it’s likely that a 1.5GHz Krait chip will provide the horsepower. As for the display, it’s a big improvement over the 360×640 unit on the PureView 808. This new phone — presumably a Lumia if it’s running Windows Phone — will sport a slightly-curved 4.3-inch HD display and will be offered in black, yellow, and pink.The processor choice is particularly interesting, because the MSM8960 Pro platform is also capable of running Windows 8 on ARM. There’s been a lot of talk about Nokia offering up a Windows 8 tablet, and this particular Qualcomm SOC would definitely be up to the task.More at Pocket Lint
By Sean Murray The incident occurred on Ballyfermot road A MAN IN his mid-80s remains in critical condition this morning, after he was struck by a car in west Dublin last night.The man was hit by the car at around 11.30pm on Ballyfermot road in the Dublin suburb.He was removed to St James’s Hospital where he remains in a serious condition this morning.It is understood that gardaí had closed the road off until around 4.30am this morning, and traffic has now resumed on the road.The incident took place is a residential area facing a number of shops and pubs.Read: Woman (20s) dies in house fire in LimerickRead: Skin cancer deaths in Ireland: One in four are construction workers or farmers Image: Google Maps Share Tweet Email Monday 1 May 2017, 11:04 AM http://jrnl.ie/3367602 1 Comment Short URL Man (80s) seriously injured after being hit by car in Ballyfermot last night The man was struck by a car on Ballyfermot road at 11.30pm last night. 10,859 Views The incident occurred on Ballyfermot road Image: Google Maps May 1st 2017, 11:04 AM Tweet thisShare on FacebookEmail this article
A new initiative by local street magazine Schedia (Life Raft) aims to heighten awareness about homelessness and increase the integration of those sleeping on the street by having homeless citizens leading tours of Athens.Following the example of similar magazines in other European countries, Schedia’s “Unseen Routes” tours will include stops at the capital’s soup kitchens, hostels and day centres. The tour guides, current and former homeless people, will provide participants with details about the facilities as well as insights into their own experience on the streets.The cost of participation in a tour will be 6 euros with a reduced fee of 3 euros for students and no charge for unemployed citizens and pensioners.Source: Ekathimerini. Facebook Twitter: @NeosKosmos Instagram
Related Items:carnival, haiti, stampede Hospital overflowing, chaos, damage and dead bodies in Gros-Morne Haiti Facebook Twitter Google+LinkedInPinterestWhatsAppHaiti, 17 Feb 2015 – Meanwhile Haiti with a rising death toll as some sort of electrical fire is blamed for killing as many as 18 people during its annual Carnival. The last day of the festivity has now been cancelled after incident; tragically it was the stampede of people trying to escape the blaze which ignited when a parade float struck a power line that caused the deaths and left nearly 80 people injured. Bi-lateral talks with Bahamas to resume, UK gives green light to high-level TCI delegation Facebook Twitter Google+LinkedInPinterestWhatsApp TCI on Alert as riots rage in Haiti, two-year president asked to resign Recommended for you
Firefighters quickly extinguished a small blaze at a house under construction that was the spot of a fire three years ago.Smoke and flames were reported at 6:41 a.m. Thursday at 39812 N.E. 94th Ave. northeast of La Center.Firefighters from Clark County Fire District 10 arrived and put out the fire within minutes, Battalion Chief Gordon Brooks said.The fire was contained to the floor of one room, Brooks said, so damage was minimal.There was a fire at the address three years ago and the owner, who lives in a trailer on the property, was rebuilding on the site, Brooks said.Clark County property records show the house as belonging to Robert Brannfors.
Clark County sheriff’s deputies have identified a driver suspected of causing a crash that seriously injured a pedestrian Sunday evening near Columbia River High School in Hazel Dell.Chancellor Pruett, 18, of Vancouver was driving a 2006 black Mazda 4-door westbound on Northwest 99th Street faster than the posted 35 mph speed limit, according to a memo issued by the sheriff’s office. At about 6:20 p.m., Pruett passed a vehicle, using the right-turn-only lane in the 900 block of the street, near Columbia River High School, according to the memo. The Mazda then cut back into the westbound lane, crashing into an eastbound 1997 Silver BMW that was turning into a driveway, the sheriff’s office reported.After the two cars collided, the sheriff’s office said, the Mazda careered into a juvenile male walking on the sidewalk on the north side of the street.The pedestrian, a 17-year-old Vancouver resident, was seriously injured and taken to an area hospital. His name was not released by the sheriff’s office, and authorities did not know his condition.
Dengue-99Though the government has cancelled the Eid leave of health officials, the dengue patients undergoing treatment in city hospitals await greater hazards as there will be a lack of necessary doctors during the Eid vacation, reports UNB. “Despite the cancellation of leave, the city hospitals will see the lack of doctors during the Eid vacation. They (doctors) will be in holiday mood,” said Harun-or-Rashid, head of medicine department of Dhaka Community Medical College and Hospital (DCMCH). Talking to UNB, he also said most hospitals are making special rosters and arrangements to keep their services undisturbed, but it will be very challenging to ensure the presence of physicians, especially at private ones. “Many doctors at private hospitals may try to avoid their duties during the eid vacation to go to their home or spend time with families which will eventually put pressure on public hospitals,” Harun added. According to the Directorate General of Health Services (DGHS), 1,159 dengue cases were reported in the capital in the last 24 hours till 8:00am on Thursday while 5,140 dengue patients are currently hospitalised here. Contacted, health minister Zahid Maleque, said, “We’re concerned about the Eid time. The Eid vacation of the officials concerned has already been cancelled and we’re monitoring the situation constantly.” He said a cell has been opened at his ministry to monitor whether doctors are working or not during the vacation. “We’ll take instant actions in the case of any negligence.” Assuring that there will be no shortage of physicians, nurses and other medical staff during the Eid vacation, he urged all not to be panicked. “We’re working together so that people can be freed from dengue infection through proper treatment.” Public hospital authorities said they are taking preparations to keep their services as usual and uninterrupted while those at private hospitals said they are making special Eid rosters and trying to manage physicians to continue their works. Principal of Dhaka Medical College Hospital Khan Abul Kalam Azad said their services will remain uninterrupted during the Eid as no one of their physicians and other staff will be allowed to leave the station. He said the city has been witnessing sporadic rains for the last few days which are only contributing to aggravating the dengue situation. “But we’re taking necessary preparations to deal with the pressure of patients during the Eid.” Imrul Haque of E and T department at Bangabandhu Sheikh Mujib Medical University (BSMMU) said the authorities have asked their physicians not to leave the station and remain ready to discharge duty during the Eid vacation. He said a special roster has already been made for ensuring the availability of adequate doctors on 11-13 August at the BSMMU. However, another physician at the BSMMU said many of their colleagues are planning to go home showing various excuses. Md Emadul Haque at Central Police Hospital in Rajarbagh said as the government has cancelled the leave of doctors and other medical staff concerned they will not face any problem in providing healthcare services to patients, including the dengue-infected ones. “We’ve already made an Eid-time roster.” He said their hospital is under tremendous pressure due to surge in dengue patents. “Though our hospital has 250-bed capacity, we’re providing treatment to over 350 indoor patients, mostly police members and their relatives due to spike in dengue cases.” A director of a private hospital, wishing anonymity, said they are making their best efforts to convince their colleagues to perform duty during the vacation, but many of them are unwilling to do that. “They’re saying they’ve been passing a busy time for over two months due to the dengue outbreak, and they now want to give their family some time during the Eid.” Medical officer of Monowara Hospital Ltd MA Hasib said their hospital is providing treatment to 20-25 dengue patients on average a day. “We think the flow of patients will continue during the Eid time as well. All the physicians may not remain available during the Eid, but authorities are making a special roster to deal with the situation.” He said it looks Moghbazar, Shantinagar, Malibagh, Khilgaon, Dhanmondi and Badda areas are badly affected with dengue while the Aedes mosquitos are spreading faster in newer areas. Abdul Malek Mridha, deputy director (admin) at Dr Sirajul Islam Medical College and Hospital, said they are trying to ensure the presence of necessary physicians and nurses during the Eid to cope with the pressure of dengue patients.
In their study, which is published in a recent issue of Physical Review Letters, the scientists explain how they discovered the new waves. They confined water inside a Hele-Shaw cell, which is a container made of two parallel glass plates separated by a small gap. In this case, the plates were positioned vertically, like the two sides of an ant farm. The plates were 30 cm wide, and the gap between them was just 1.5 mm. The water inside was about 5 cm deep.The researchers mounted the Hele-Shaw cell on a shaker, which vertically vibrated the cell and the water inside. While carefully controlling the vibration frequency and amplitude, they recorded the water surface deformation with a high-speed camera.When the researchers slowly increased the oscillation amplitude, two-dimensional standing waves with large amplitudes began to form on the water’s surface. As the researchers explained, these waves are called Faraday waves, which form on the surface of a vibrating fluid when the vibration frequency exceeds a certain value, and the surface becomes unstable.The researchers observed two different shapes of Faraday waves, one having even symmetry and the other having odd symmetry. The even symmetry can be seen as a vertical “mirror” symmetry between the wave’s left and right sides. The odd symmetry of the second wave is only approximate, since the wave’s lower half is not exactly the same shape as the upper half. Because the researchers used an external probe to briefly perturb the surface, they think that the different wave patterns are likely attributed to the probe motion. More information: Jean Rajchenbach, et al. “New Standing Solitary Waves in Water.” Physical Review Letters 107, 024502 (2011). DOI: 10.1103/PhysRevLett.107.024502 What makes the giant freak wave ‘stable’ The even (left) and odd (right) standing solitary waves, whose motions can be seen in the video below. Image copyright: Jean Rajchenbach, et al. ©2011 American Physical Society Explore further 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. The odd standing solitary wave. Video copyright: Jean Rajchenbach, et al. ©2011 American Physical Society Citation: Scientists discover new water waves (2011, July 19) retrieved 18 August 2019 from https://phys.org/news/2011-07-scientists_1.html “These waves are both strongly localized, and stationary,” Rajchenbach told PhysOrg.com. “Until now, two main classes of water solitary waves had been described: propagative solitons (the famous ‘Korteweg de Vries’) and envelope solitons (described by the nonlinear Schrodinger Equation), consisting of a large wave packet enveloping a large number of arches of ‘carrier’ waves. The observed waves belong to a different category of solitary waves.”When trying to understand how surface instabilities could have caused these waves to form, the researchers encountered some problems due to the waves’ large amplitudes, since general amplitude equations describe waves with significantly smaller amplitudes. But in general, the researchers think that the novel wave patterns likely arise from the overlap of flat and wavy regions, both of which result from shaking-induced instabilities. The instabilities may involve mechanisms that also play a role in other fields, such as nonlinear optics, chemistry, and biology, as well as in sea waves.“The main interest of our work obviously applies to sea nonlinear waves, and strengthens our knowledge concerning the formation of ocean waves of large amplitudes (giant ‘rogue’ waves or ‘tsunamis’),” Rajchenbach said. The even standing solitary wave. Video copyright: Jean Rajchenbach, et al. ©2011 American Physical Society (PhysOrg.com) — By precisely shaking a container of shallow water, researchers have observed wave behavior that has never been seen before. In a new study, Jean Rajchenbach, Alphonse Leroux, and Didier Clamond of the University of Nice-Sophia Antipolis in Nice, France, have reported the observation of two new types of standing waves in water, one of which has never been observed before in any media. When analyzing the standing waves, the researchers found that the two-dimensional even wave resembles the profile of a three-dimensional “axisymmetric oscillon,” a type of wave that has previously been observed at the surface of a layer of vibrating bronze beads. To the researchers’ knowledge, the odd standing wave has never been observed in any fluid media. The odd standing solitary wave. Video copyright: Jean Rajchenbach, et al. ©2011 American Physical Society The even standing solitary wave. Video copyright: Jean Rajchenbach, et al. ©2011 American Physical Society 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.
Adult Scarlet King Snake, Florida Locale. Credit: G-Bartolotti/ Wikipedia SKCC BY-SA 3.0 Coral snakes are venomous, as most people are aware. They’re also one of the more identifiable of the venomous snakes due to their unique black, yellow and red bands along the length of their body. Scarlet kingsnakes on the other hand, are not venomous. Instead they are Batesian mimics, a term used to describe harmless creatures that mimic the appearance of those that are dangerous in the hopes that they will be mistaken for them by predators and be left alone. Both types of snakes once lived in the North Carolina Sandhills area, which allowed the scarlet kingsnake to become a mimic of the coral snake. But, something unexpected happened around 1960 that caused the coral snakes to disappear from the area—no one knows why, but it left the kingsnakes without a model to copy.With no examples to emulate, Akcali and David Pfennig figured that kingsnakes would likely have lost some of their mimicry over the past half century. To find out if they were right, the obtained samples of coral snakes captured before they disappeared and compared them with samples of kingsnakes captured at various times since then. To their surprise, they found that the sudden disappearance of the coral snake had caused the kingsnakes to look even more like them, not less.In hindsight, the research duo suggest that had they given the situation more thought, they might have predicted what they found. They note that as the numbers of coral snakes started to decline, those kingsnakes that looked less like coral snakes likely suddenly became targets of predators, while those that looked more like the venomous snakes survived, leading to a quick evolutionary change. They suggest that the trend will not continue long, however, as time passes and predators either forget what coral snakes looked like or become bolder during lean times and overcome their fear of them. Citation: Study finds mimicry increased in scarlet kingsnake snake after disappearance of coral snake (2014, June 12) retrieved 18 August 2019 from https://phys.org/news/2014-06-mimicry-scarlet-kingsnake-snake-coral.html Ah, spring . . . and a snakebite alert Journal information: Biology Letters (Phys.org) —A pair of research biologists has found that a harmless snake that mimics a dangerous snake increased its mimicry after the dangerous snake disappeared from one local area. In their paper published in the journal Biology Letters, Christopher Akcali and David Pfennig of the University of North Carolina describe their findings in studying snakes in the North Carolina Sandhills and their surprise at discovering how one adapted to the demise of the other. © 2014 Phys.org 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. More information: Rapid evolution of mimicry following local model extinction, Biology Letters, Published 11 June 2014 DOI: 10.1098/rsbl.2014.0304AbstractBatesian mimicry evolves when individuals of a palatable species gain the selective advantage of reduced predation because they resemble a toxic species that predators avoid. Here, we evaluated whether—and in which direction—Batesian mimicry has evolved in a natural population of mimics following extirpation of their model. We specifically asked whether the precision of coral snake mimicry has evolved among kingsnakes from a region where coral snakes recently (1960) went locally extinct. We found that these kingsnakes have evolved more precise mimicry; by contrast, no such change occurred in a sympatric non-mimetic species or in conspecifics from a region where coral snakes remain abundant. Presumably, more precise mimicry has continued to evolve after model extirpation, because relatively few predator generations have passed, and the fitness costs incurred by predators that mistook a deadly coral snake for a kingsnake were historically much greater than those incurred by predators that mistook a kingsnake for a coral snake. Indeed, these results are consistent with prior theoretical and empirical studies, which revealed that only the most precise mimics are favoured as their model becomes increasingly rare. Thus, highly noxious models can generate an ‘evolutionary momentum’ that drives the further evolution of more precise mimicry—even after models go extinct.