Tag: 爱上海319龙凤

NEIGHBOR NEWS Whats Making Headlines In Tewksbury

first_imgTEWKSBURY, MA — Ever wonder what’s making news next door in Tewksbury? Bill Gilman, editor of Your Tewksbury Today, has the answer!Below is a collection of top Tewksbury stories, primarily written by Gilman, that were recently published on his popular website.Top Tewksbury Stories (November 17-November 26):Tewksbury Woman Is The Latest Mass. Lottery $1 Million WinnerPHOTO GALLERY: Historic Win For Aylward’s, As Redmen Stuff Wildcats, 43-0Tewksbury High Cheerleaders Cap Fall Season With Strong Showing At StatesTewksbury Youth Lacrosse Association Introduces A New ProgramTewksbury U10-1 Girls Soccer Wins Global Premiere Soccer Tournament Your Tewksbury Today is Tewksbury’s premiere online hyperlocal news source. Follow YTT on Facebook and Twitter.Like Wilmington Apple on Facebook. Follow Wilmington Apple on Twitter. Follow Wilmington Apple on Instagram. Subscribe to Wilmington Apple’s daily email newsletter HERE. Got a comment, question, photo, press release, or news tip? Email wilmingtonapple@gmail.com.Share this:TwitterFacebookLike this:Like Loading… RelatedNEIGHBOR NEWS: What’s Making Headlines In Tewksbury?In “Community”NEIGHBOR NEWS: What’s Making Headlines In Tewksbury?In “Community”NEIGHBOR NEWS: What’s Making Headlines In Tewksbury?In “Community”last_img read more

DNCC mayoral post declared vacant

first_imgDNCC logoThe government has declared vacant the mayoral post of Dhaka North City Corporation after the death of its mayor Annisul Huq.The local government ministry on Monday issued a circular saying that the DNCC mayoral post fell vacant on 1 December as per Article 15(E) of the Local Government (City Corporation) Act 2009.According to the electoral law, the election commission will now have to hold a by-poll to elect people’s representative for the vacant post in 90 days for the rest of the DNCC tenure.Read more: EC to hold DNCC mayoral by-polls in 90 daysIf any post of mayor or councillor of a city corporation falls vacant 180 days before the expiry of their tenures, a by-election to the post shall be held within 90 days since the day it falls vacant to fulfil the post for the rest of the tenure, reads Article 16 of the Local Government (City Corporation) Act 2009.Election commission secretary Helal Uddin Ahmed on Sunday told a group of newsmen that the commission is ready to hold the by-polls in 90 days to the mayoral post once the ministry issues a gazette notification declaring the post vacant.Annisul Huq, who was elected DNCC mayor on the ticket of ruling Bangladesh Awami League (AL) in a controversial election in April of 2015, died on 30 November while undergoing treatment at a London hospital.last_img read more

Chemists offer more evidence of RNA as the origin of life

first_img Citation: Chemists offer more evidence of RNA as the origin of life (2016, May 13) retrieved 18 August 2019 from https://phys.org/news/2016-05-chemists-evidence-rna-life.html (Phys.org)—A team of chemists at Ludwig Maximilian University of Munich has shown how the purines adenine and guanine can be synthesized easily and in reasonable yields, offering more evidence that RNA could have served as the origin of life on Earth. In their paper published in the journal Science, the team describes the process they took in looking for evidence that RNA could have been the first self-replicating molecule that eventually led to all life on our planet and what they found. Journal information: Science 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. For several years many scientists have supported the idea that life got its start on our planet due to a series of events that led to the creation of RNA molecules—it seems like a strong candidate because it is able to both store information and act as a catalyst. To bolster the theory, scientists have been trying to show under what conditions RNA might have come about based on the conditions that existed on early Earth. In the early going, researchers found it relatively easy to show how two of the four main building blocks in RNA, uracil and cytosine, could have come about, but showing how the other two, adenine and guanine, might have come about has been problematic. In this new effort the research team describes a scenario under with both might have come about given conditions at the time that life is believed to have got its start.The team started by extending prior research that had shown that a molecule called formamidopyrimidine can react under certain conditions to form purines—they discovered that adding acid to an amine (which the team showed could have come about very easily from plentiful carbon, nitrogen and hydrogen) allowed for a reaction that led to the formation of a purine and that it would easily bond with formic acid, which recent research has shown is plentiful on comets—that means it could have met with existing purines if a comet crashed into the planet at the right place. Once that happened, the resultant reactions would have led to forging bonds with sugars which would have resulted in the creation of large amounts of purines, including adenine and guanine—thus all of the necessary ingredients would have been in place for the creation of RNA molecules, setting the stage for the development of living organisms. This is a computer graphic of an RNA molecule. Credit: Richard Feldmann/Wikipediacenter_img © 2016 Phys.org Missing links brewed in primordial puddles? Explore further More information: S. Becker et al. A high-yielding, strictly regioselective prebiotic purine nucleoside formation pathway, Science (2016). DOI: 10.1126/science.aad2808AbstractThe origin of life is believed to have started with prebiotic molecules reacting along unidentified pathways to produce key molecules such as nucleosides. To date, a single prebiotic pathway to purine nucleosides had been proposed. It is considered to be inefficient due to missing regioselectivity and low yields. We report that the condensation of formamidopyrimidines (FaPys) with sugars provides the natural N-9 nucleosides with extreme regioselectivity and in good yields (60%). The FaPys are available from formic acid and aminopyrimidines, which are in turn available from prebiotic molecules that were also detected during the Rosetta comet mission. This nucleoside formation pathway can be fused to sugar-forming reactions to produce pentosides, providing a plausible scenario of how purine nucleosides may have formed under prebiotic conditions.last_img read more