September 5, 2019

Dinosaur era chickens came out of the egg running says new study

first_imgLas Hoyas, Spain is known for spectacular fossils preserved in 126 million-year-old rocks deposited in a lake environment /HKUHKU MOOC / HKU Vertebrate Palaeontology Laboratory.HKU Vertebrate Palaeontology LaboratoryThe ancient hatchling of birds like chickens and ducks came out of the egg running, according to latest fidnings from the 125 million-year-old Early Cretaceous fossil beds of Los Hoyas, Spain, which have long been known for producing thousands of petrified fish and reptiles. The paleontologists found one special fossil — a nearly complete skeleton of a hatchling bird — that was unique and is one of the rarest of fossils. The lifestyle of this 3-cm long hatchling bird was studied by examining previously unknown feathering of the preserved fossil specimen.”Previous studies searched for but failed to find any hints of feathers on the Los Hoyas hatchling. This meant that its original lifestyle was a mystery,” says Michael Pittman from the University of Hong Kong who led the study along with Thomas G. Kaye from the Foundation for Scientific Advancement in the USA.   Feathers revealed in a ~125 million-year-old fossil of a bird hatchling shows it came “out of the egg running”. Specimen MPCM-LH-26189 from Los Hoyas, Spain is preserved between two slabs of rock: (a) ‘counter’ slab under normal light (b) Laser-Stimulated Fluorescence (LSF) image combining the results from both rock slabs. This reveals brown patches around the specimen that include clumps of elongate feathers associated with the neck and wings and a single long vaned feather associated with the left wing. (c) Normal light image of the main slab. Scale is 5mm. Image Credit: Kaye et al. 2019@Kaye et al. 2019Within hours of hatching, chickens and ducks are up and running as they are “precocial” unlike pigeons and eagles which are “altricial”. The latter require parental cover to keep themselves warm till they develop feathers. When precocial birds hatch, they have developed down feathers and partly developed large feathers and can keep warm themselves and get around without mum’s help.Previous attempts using UV lights failed to detect the feathers. Pittman and Kaye used a high power laser to study tiny chemical differences in the fossils in different colours, to make out previously unseen anatomical details. The new results on the hatchling bird revealed that they had feathers at birth and was thus precocial and out of the egg running.The latest laser technology demonstrates that some early birds adopted a precocial breeding strategy just like modern birds, said researchers. Even during the time of dinosaurs, some enantiornithine bird babies had the means to avoid the dangers of Mesozoic life by following their parents or moving around themselves, they said.”One of the feathers discovered was of a substantial size and preserves features seen in other hatchlings. It indicates that our hatchling had reasonably well-developed flight feathers at the time of birth”, says Jesús Marugán-Lobón, another author of the study from the Universidad Autónoma of Madrid, Spain. Las Hoyas, Spain is known for spectacular fossils preserved in 126 million-year-old rocks deposited in a lake environment  HKU MOOC / HKU Vertebrate Palaeontology Laboratorylast_img read more

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August 31, 2019

WB panchayat poll on May 14 State Election Commission

first_imgKolkata: Panchayat election in West Bengal will be held on a single day on May 14, the State Election Commission (SEC) announced today. Earlier, the SEC had announced that the polling would be held in three phases on May 1, 2 and 5. The polling had to be deferred after opposition parties moved courts alleging violence and intimidation by the ruling party during the nomination process. “The panchayat election will be held on May 14,” a spokesman of the SEC told newsmen here.last_img

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August 30, 2019

3 Common Facebook Myths Debunked

first_img Opinions expressed by Entrepreneur contributors are their own. 4 min read Every now and then, you may notice that a Facebook friend’s status updates have turned ominous. The messages instruct you to copy and paste a certain phrase into a post on your own wall or risk that your content may be hijacked by Facebook. Here are three recent myths that, with the help of Snopes.com, have been proven false.1. Facebook Privacy NoticeVariations of this one seem to crop up every few months, and many intelligent people fall for it. It says something like: “As of [date] at [time a.m./p.m., time zone], I do not give Facebook or any associated entities permission to use my pictures, information or posts, both past and future. By this statement, I give notice to Facebook it is forbidden to disclose, copy, distribute or take any other action against me… The content of this profile is private and confidential information. The violation of privacy can be punished by law. All members must post a note like this. If you do not publish a statement at least once it will be tactically allowing the use of your photos, as well as the information contained in the profile status updates.”According to Snopes, this myth has made the rounds online for more than a year. While it’s true that anything you post online may live on forever, Facebook does not own your content. Your use of Facebook does, however, give Facebook a non-exclusive, royalty-free license to use any content you post that’s covered by intellectual property rights (such as photos or video) without having to pay you for it. You may limit these rights by controlling the privacy and app settings on your account (check out Facbook’s legal terms here.)Facebook’s terms of service are essentially a “take it or leave it” contract – you either accept the terms or don’t create an account. In other words, you can’t singlehandedly modify the terms of a contract by simply posting a statement without the other party’s consent.So although this one’s a myth, it’s not a bad idea to review the terms of service and privacy policies that govern your use of social media platforms (and adjust your privacy settings), which can change at any time.Related: 7 Biggest Myths Business Owners Believe About Using Copyrighted Material 2. Your private posts will show up in public search.This myth feeds on peoples’ fear that their private information is being blasted across the internet and is visible to strangers, and crops up when Facebook unveils changes to the site. It looks like this: Users are encouraged to take action on their friends’ individual profiles or risk deletion for posting private information. This is false. Facebook provides tips for those who wish to control who sees their profile via their privacy settings, and suggests reviewing and/or removing tags for photos in which you appear that others may have uploaded.3. Giraffe photo virus.You may have noticed your friends’ profile pictures replaced by photos of cute giraffes recently. Initially, the ruse was circulated as a riddle and, if the person didn’t guess correctly, they were supposed to replace their photo with a picture of a giraffe. Then, word spread that the giraffe photos were infected with a virus that would enable hackers to control your computer or damage your smart phone. Snopes.com and other urban myth-busters put that rumor to rest quickly, noting the hoax was based on a 2004 warning about JPEG images linked to a malicious code, which was fixed by Microsoft nine years ago.For more, check out Facebook’s “common myths” page Related: Facebook Facepalm: In Big Real-Estate Buy, Mark Zuckerberg Seeks Personal Privacy, Then Removes Online Privacy Feature Register Now » November 7, 2013 Attend this free webinar and learn how you can maximize efficiency while getting the most critical things done right. Free Webinar | Sept 5: Tips and Tools for Making Progress Toward Important Goalslast_img read more

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February 23, 2019

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