IT was a very sad occasion in Donegal Town today as people came out in their hundreds to say goodbye to businessman and former TD Jim White.Taoiseach Enda Kenny joined family, friends and those who knew and loved Jim as his coffin left The Abbey Hotel on The Diamond where the wake was held.Once again staff and members of the community lined the streets as the cortege, led by a piper, made its way down towards the pier. Then it was off to his home town on Ballyshannon where crowds gathered again to pay their respects at the funeral and at the graveside afterwards.Taoiseach Enda Kenny paid tribute to Mr White as a “man of enormous positivity and generosity”.He said Mr White had worked hard to draw more tourists to the north-west region.“He was a man of enormous popularity in Donegal and the north-west in general and even managed to head the poll against Neil Blaney in a general election,” he said. SAD FAREWELL AS DONEGAL SAYS GOODBYE AND THANK YOU TO JIM WHITE was last modified: September 5th, 2014 by John2Share this:Click to share on Facebook (Opens in new window)Click to share on Twitter (Opens in new window)Click to share on LinkedIn (Opens in new window)Click to share on Reddit (Opens in new window)Click to share on Pocket (Opens in new window)Click to share on Telegram (Opens in new window)Click to share on WhatsApp (Opens in new window)Click to share on Skype (Opens in new window)Click to print (Opens in new window)
Often the most interesting science stories are the ones about us– how our bodies and minds function. Actions we perform each day without much thought are made possible by precision engineering, sometimes at the molecular level. Here is a selection of news briefs about human superpowers.Electrical engineering: We have untold myriads of electrical voltage sensors in our cells. They are so small, scientists must use extremely delicate techniques of X-ray crystallography to try to determine their structure. Science Now summarizes recent papers by Roderick MacKinnon et al. (see 05/01/2003, 3/12/2002 entries) about potassium channels in the membranes of neurons. The structure of the pores and the adjacent voltage sensors is coming into focus. There are four positively-charged arginine molecules (amino acids) that sit on top of the voltage sensors that surround the channel. “These charged arginines,” the article says, “move in response to changes in the voltage across the cell membrane, pressing up and down on the lever that opens and closes the pore.” Just how this movement takes place is still unknown, but it happens really fast. That’s what makes you cry ouch almost instantly after stubbing your toe: an electrical current, set up by these voltage-dependent ion channels, travelled from neuron to neuron from toe to brain in a fraction of a second.Optical engineering: What could be clearer than a cornea? This outer surface of the eye looks simple, like a glass lens, but it is very complex. EurekAlert summarized work by the American Society for Biochemistry and Molecular Biology. The scientists identified 141 distinct proteins in the cornea, 70% of which were previously unknown. (For the structure of protein, see our online book). These complex molecules perform many important roles, such as “antimicrobial defense, heme and iron transport, tissue protection against UV-radiation and oxidative stress,” it lists. “Several other proteins were known antiangiogenic factors, which prevent the formation of blood vessels.” The cornea is not a mere gateway for light, but a lively, active place, constantly undergoing maintenance, repair and cleaning. The September issue of Sky and Telescope recommends that you think carefully before deciding on laser surgery on this delicate, dynamic, living surface.Software engineering: Perceiving perception: Your brain uses database technology. A press release from Howard Hughes Medical Institute states that “The brain may interpret the information it receives from sensory neurons using a code more complicated than scientists previously thought.” This “perception code,” studied by experiments with monkeys (which presumably have similar neuronal equipment to humans) found that “most attention to the first 250 milliseconds of neural firing, and that their attention falls off exponentially from there.” Maybe some form of attention deficit is built in to deal with TMUI (too much uninteresting information). See also a related report on EurekAlert about work at Johns Hopkins, “How the brain understands pictures.” Researchers found that “the system continuously organizes the whole scene, even though we usually are attending only to a small part of it.” Three or four times per second, the brain organizes the chunks of a scene into something like a database, according to a “sophisticated program” to “select and process the information that is relevant at a given moment.” As one researcher visualized it, imagine the challenge of pulling order out of a chaotic jumble of Lego blocks. He said, “the visual system first has to arrange this bag of blocks into useful ‘chunks’ and provide threads by which one or the other chunk can be pulled out for further processing.”The Cellular 007: When major threats arise, sometimes you have to give the cops their leash and turn them loose to do whatever is necessary to maintain security. EurekAlert reported on work by Yokoyama et al. at Washington School of Medicine. They found that natural killer cells act like the “James Bond” of the immune system. Under certain circumstances, the body gives them a “license to kill” – “the arsenals of natural killer cells only become fully armed after a receptor on their surfaces interacts with a molecule on the surfaces of other cells.” That’s the warrant to search and destroy. The article says that these natural killer cells are produced in the bone marrow, and that the entire population is replaced in a week’s time. “The molecular details of the process were so unusual,” says the report, “that Yokoyama and his colleagues found themselves struggling to develop terms to describe it to other immunologists.”Safe Stem Cells: Scientists at Pittsburgh School of Medicine, reports EurekAlert, have found that discarded placentas apparently contain stem cells with the “same potential as the more controversial counterparts,” embryonic stem cells. If so, then “placentas would no longer be relegated to the trashcan,” but become a lifesaving source of regenerative material. See also the MSNBC News report.Navigational Guidance and Control: Those orthogonal semicircular canals in our inner ears do more than just help balance. Because they respond to acceleration and deceleration, reports EurekAlert on work by the Institute of Neurology in London, they provide the brain with inputs for an “on-line movement guidance system” that is crucial when visual cues are absent, such as finding your way in a dark room. Additionally, the otolith organs (see 10/10/2003 entry), part of the vestibular system, are essential for determining which way is up. The article states that “the inner-ear vestibular organs provide what is essentially an on-line movement guidance system for maintaining the accuracy of whole-body movements.” This not only helps those of us lost in the dark, but highly-trained specialists undergoing “complex, high-precision whole-body movements, such as those of the gymnast or circus performer.” Visualize an acrobat balancing and catching a jug on his head and making it spin around, or picture an Olympic gymnast on uneven bars nailing a double twisting dismount, or a skater executing a perfect triple Lutz. You can bet those vestibular organs are working overtime. The full article by Brian L. Day and Richard C. Fitzpatrick, loaded with praise for the vestibular system, can be found on Current Biology, Volume 15, Issue 15, 9 August 2005, pages R583-R586. Here is the opening paragraph:Small, beautifully formed and locked in the skull, the vestibular organs continuously bombard the brain with messages. The messages are quite unlike any others. They tell of accelerations, how the head is rotating and translating and its orientation in space. The messages never stop and cannot be turned off. Even when we are completely motionless, they signal the relentless pull of gravity. Perhaps because of their constant monologue, the vestibular sensation is different to the other senses. There is no overt, readily recognizable, localisable, conscious sensation from these organs. They provide a silent sense. A body is a terrible thing to waste (speaking of waist, there can be too much of a good thing). Whether your body is fully functional or afflicted with a malady or two, you have a marvelous set of capabilities, and a dignity underscored by the complexity of the engineering that went into your making. Even if you are completely disabled, there is more complex engineering working properly under the skin than you could possibly realize. Fill in the box you were given. Exercise, eat right, practice. Maintain your machinery in optimum working order. Aim your body at something noble and worthwhile. You have a huge support infrastructure, with a staff of trillions behind the scenes, hoping you will make the right choices.(Visited 10 times, 1 visits today)FacebookTwitterPinterestSave分享0
Share Facebook Twitter Google + LinkedIn Pinterest Four regional Hope for Ohio events will welcome youth, parents, advisers and others interested in helping young people fight the opioid epidemic. A project of Ohio Farm Bureau and other supporting organizations, Hope for Ohio works with 4-H and FFA members to encourage peer-to-peer prevention measures. At each event, speakers will share stories and information that will provide youth with tools needed to be prevention leaders in their communities.The regional events are: Sept. 29: Beck’s research farm facility, London, Noon to 3 p.m. Nov. 3: FFA Camp Muskingum, Carrollton, 10 a.m. to 3 p.m. Nov. 10: Spencerville High School, Spencerville, Noon to 3 p.m. Nov. 17, Batavia Community Center, Batavia, 11 a.m. to 2 p.m.These regional events are a follow-up to last year’s statewide Hope for Ohio event held on the campus of Ohio State University and is one of several projects by Ohio and county Farm Bureaus to combat Ohio’s opioid crisis.For more information, or to register, visit ofb.ag/2018hopeforohio.
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Life in Kashmir Valley returned to normal on Sunday after two days of restrictions and strike as the first death anniversary of Hizbul Mujahideen “commander” Burhan Wani on Saturday remained by and large peaceful.Shops and other business establishments were open and public transport plied smoothly. Movement and assembly of people were unrestricted, officials said. Restrictions were lifted after two days as the situation remained peaceful on Saturday.Authorities restored mobile and broadband Internet services in Kashmir. While mobile Internet was restored on Saturday night, the BSNL’s broadband service resumed on Sunday morning. Only 2G connectivity An official, however, said only 2G connectivity was available on mobile networks. “The high-speed network is still suspended,” he said. He said the decision to restore it would be taken after assessing the situation.Internet services across the Valley were snapped on Thursday night as a precautionary measure to maintain law and order in view of Wani’s death anniversary. Situation under controlThere were a few incidents of stone throwing on Saturday, but the situation remained under control and peaceful, the officials said.A woman was injured when she sustained multiple pellet injuries in one such clash in Shopian town. The separatists, including the Hurriyat Conference factions led by Syed Ali Shah Geelani and Mirwaiz Umar Farooq and the Yasin Malik-led JKLF, had called for a strike on Saturday. Restrictions had been imposed in five police station areas of Srinagar on July 7.
Advertisement LEAVE A REPLY Cancel replyLog in to leave a comment Fans have already snapped up many of the tickets to Stratford Perth Museum’s Justin Bieber exhibit, opening Feb. 18. – Chris Pizzello/AP/File Facebook “We really didn’t believe how big he got so quick,” says his grandfather, Bruce Dale. “It was just amazing.” Advertisement Login/Register With: Justin Bieber’s grandparents stand next to the steps of the Avon Theatre in his hometown of Stratford, Ont., where they remember him busking even before he turned 10.“He was raising money to take his mom on a trip to Disney World… and he did,” says Diane Dale, Bieber’s grandmother. “He made a lot of money sitting here on the steps. He was good.”Viral videos of him performing on the steps of the theatre are what helped Bieber get noticed by his talent manager Scooter Braun and become one of the best-selling artists in the world soon afterwards. Advertisement Twitter
APTN National NewsThe motion that introduced Jordan’s Principle to Canada was voted on in the House of Commons in 2007.It was passed unanimously by members of Parliament after Jordan River Anderson, a First Nations boy in Manitoba died in hospital while Canada and the province fought over who would pay for his nursing at home.But implementing the plan to put First Nations children on the same footing as off-reserve kids is taking more time.APTN’s Dennis Ward now on Manitoba’s plan.