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    '">> 

    انواع کناف

    کناف برای زیباسازی فضای داخلی ساختمان بسیار رایج شده است. در اینجا انواع کناف موجود در بازار و ویژگی های آن شرح داده خواهد شد. صفحات روکش دار گچی تولیدی کناف از نظر مشخصات و مورد استفاده به دسته بندی های زیر تقسیم میشود:

    – کناف معمولی (Reguler Board)

     

     

    – کناف مقاوم در برابر رطوبت (Moisture Resistant Board)

     

     

    – کناف مقاوم دربرابر حریق (Fire Resistant Board)

     

     

    – کناف مقاوم دربرابر حریق و رطوبت (Fire & Moisture Resistant Board)

     

    کناف ساده RG

     

    صفحات ساده RG کناف صفحات روکش داری هستند که سطح و لبه بلند (طولی) آن ها با مقوای محکمی پوشیده شده است.

     

    علامت مشخصه: در امتداد محور میانی پشت صفحه مهر آبی کناف چاپ شده است.

     

    موارد استفاده: دیوارهای جداکننده ̜و پوشش دیوارهای سنتی به جای گچ و خاک و گچ کاری، سقف کاذب،طراحی های داخلی متفاوت.

     

     

     

    کناف مقاوم در برابر رطوبت MR

     

    صفحات مقاوم در برابر رطوبت MR یکی دیگر از انواع کناف موجود در بازار هستند. آنها صفحات روکش داری هستند که گچ تشکیل دهنده آن ها با مواد مقاوم در برابر رطوبت پوشش شده است.

     

    علامت مشخصه: مقوای پشت و روی صفحه سبز رنگ است و در امتداد محور میانی پشت صفحه مهر آبی کناف چاپ شده است.

     

    موارد استفاده: علاوه بر مواردی که در استفاده از صفحات روکش دار گچی ساده ذکر شد، از این نوع کناف برای سلولهای تر در ساختمان نظیر حمام، آشپزخانه و دستشویی استفاده می شود.

     

     

     

    کناف مقاوم دربرابر آتش FR

     

    این نوع کناف صفحات روکش داری هستند که گچ آن ها حاوی الیاف فایبرگلاس است که آن را دربرابر آتش مقاوم می نماید.

     

    علامت مشخصه: در امتداد وسط پشت صفحه مهر قرمز کناف چاپ شده است.

     

    موارد استفاده: دیوارهای جداکننده، پوشش دیوارهای سنتی، سقف کاذب و جاهایی که نیاز به مقاومت در برابر آتش وجود دارد همچون پوشش ستون ها و تیرهای فلزی و بتونی. این نوع کناف برای پوشش دهی طراحی داخلی مجتمع های تجاری مناسب است.

     

     

     

    کناف مقاوم دربرابر آتش و رطوبت FM

     

    صفحات مقاوم دربرابر آتش و رطوبت FM کناف ها صفحات روکش داری هستند که گچ آن ها حاوی الیاف فایبرگلاس و مواد مقاوم در برابر رطوبت بوده و مقوای آن ها با مواد مقاوم در برابر رطوبت پوشیده شده است.

     

    علامت مشخصه: مقوای پشت و روی صفحه سبز رنگ است و در امتداد محور میانی پشت صفحه مهرقرمز کناف چاپ شده است.

     

    موارد استفاده: این نوع کناف همچون صفحات روکش دار گچی مقاوم دربرابر آتش و نیز در سلول های تر در ساختمان نظیر حمام، آشپزخانه و دست شویی بکار می رود

     



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    Sigma Xi Awards Research Grants to Students in Spring 2019 Cycle

    In the spring 2019 cycle of its Grants in Aid of Research program, the Society awarded 143 grants totaling $137,984 to students.

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    Group Shot with Gordon Moore

    Silicon Valley Pioneer and Philanthropist Receives the Gold Key Award

    Attendees at the 2019 Sigma Xi Annual Meeting and Student Research Conference will hear a personal, recorded message from an Intel Corporation cofounder.

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    Announcing the 2019 Award Winners

    The Society is pleased to announce the 2019 award winners. Many of them will be featured speakers at the Annual Meeting and Student Research Conference.

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    Danny Collins

    People's Choice Award Winner Aims to Improve the Experience of Using Probiotics

    Danny Collins, a junior at Newton South High School in Newton, Massachusetts, has won the 2019 People’s Choice Award in Sigma Xi's Student Research Showcase.

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    2019 judges Intel ISEF from Sigma Xi

    Students Receive Sigma Xi’s Awards at Intel International Science and Engineering Fair

    Sigma Xi members attended the Intel International Science and Engineering Fair in Phoenix, Arizona, to award $6,000 to students.

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    Student Research Showcase Results

    Student Research Showcase Results

    Judges have named the division winners and inaugural overall top presenter for the Student Research Showcase. Voting for the People's Choice Award is open.

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    Peter Hotez

    Vaccine and Tropical Disease Expert Announced as a Keynote Speaker at Sigma Xi’s Annual Meeting

    Peter Hotez of Baylor College of Medicine will discuss developing new vaccines while facing modern 21st century forces, including the antivaccine movement.

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    AMSRC logo

    Annual Meeting to Focus on Changing Global Environment and Research Enterprise

    Join us at Sigma Xi’s Annual Meeting and Student Research Conference, November 14–17, in Madison, Wisconsin.

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    Jason Strickland

    Grants in Aid of Research Recipient Profile: Jason Strickland

    We catch up with grant recipient Jason Strickland and his project that investigated venom variation in Mojave rattlesnakes.

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    Andrea Armani

    Supporting Women in STEM

    In honor of Women’s History Month in March, Sigma Xi asked female members about the challenges they see for women in science, technology, engineering, and math (STEM) as well as possible solutions for those issues.

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    Four Ways Sigma Xi Can Help with Your Job Search

    Your Sigma Xi membership is a distinction on your curriculum vitae that potential employers will notice. That honor, however, is just the beginning of how the Society can help with your career goals.

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    Creating a Favorable Future

    President Joel Primack discusses how Sigma Xi researchers can help preserve a livable world for future generations.

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    Vint Cerf

    Father of the Internet Announced as a Plenary Speaker at Sigma Xi’s Annual Meeting

    Vint Cerf will share ways that researchers are using the Internet to address global environmental changes. He will also discuss trust between science and the public.

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    Sigma Xi Elections

    Candidates Sought for Sigma Xi Elections

    Sigma Xi seeks candidates to run for leadership positions in the 2019 elections.

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    U.S. Capitol Building

    Sigma Xi to Government Leaders: Avoid Another Disruption to Research

    In letters sent this week, Sigma Xi urged leaders in the United States Congress and President Donald Trump to avoid any actions that would result in future federal funding lapses for scientific research.

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    Students Are Invited to Apply for Research Grants

    Undergraduate and graduate students who would like to apply for research grants have through March 20 to be considered in the next application cycle.

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    FY 2018 AnnualReport

    Fiscal Year 2018 Annual Report Just Released

    The Fiscal Year 2018 Annual Report demonstrates what the Sigma Xi community accomplished from July 1, 2017–June 30, 2018.

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    A New Award Will Debut at the Student Research Showcase

    Science and engineering students participating in the Student Research Showcase will have the chance to win double the prize money than they could before.

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    Sonya Smith

    2018 Sigma Xi Election Results

    Members of Sigma Xi, The Scientific Research Honor Society elected their peers to leadership roles in an online election that ended November 27.

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    Joy Cote

    Tradition to Support Students and Early Career Researchers Carries on at the Sigma Xi Annual Meeting

    An uplifting tradition carried on at the Annual Meeting and Student Research Conference hosted by Sigma Xi.

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    Science and Human Rights

    STEM Education and Human Rights

    Take a look at what the Science and Human Rights Coalition discussed in 2018.

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    Simona Augyte

    Grants-in-Aid of Research Award Recipient Profile: Simona Augyte

    We catch up with Simona Augyte, who received a research grant from Sigma Xi as a PhD candidate, to learn about the results of her project and see where she is now.

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    Jeff Dean of Google

    Sigma Xi Annual Meeting and Student Research Conference Discussed Big Data and the Future of Research, Ethics, and Science Communication

    Sigma Xi members, science supporters, and students came together October 25–28 for the 2018 Sigma Xi Annual Meeting and Student Research Conference.

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    Top Presenters Announced at the Student Research Conference

    Science and engineering students from across the country gathered in Burlingame, California, for the 18th Annual Student Research Conference.

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    Chapter Award Winners and Top Electing Chapters in 2017–2018

    The Sigma Xi Committee on Qualifications and Membership has selected Sigma Xi chapters that will receive the 2017–2018 chapter awards and recognized the top electing chapters.

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    2018 Ferst Award Winner Carol Fierke

    Texas A&M University Provost Honored with Teaching Award

    Carol A. Fierke will receive the 2018 Sigma Xi Monie A. Ferst Award, sponsored by the Georgia Institute of Technology Chapter.

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    Letter from the President: Defending the Scientific Process

    Some people think the survival of key theories of modern science is impossible because they believe that new scientific theories always overthrow the previous theories. Sigma Xi President Joel Primack challenges that misunderstanding.

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    Research Honor Society Calls for Support of Climate Scientists and Investments in Research to Reduce Climate Change

    Sigma Xi makes its statement on climate change on the day that the Intergovernmental Panel on Climate Change released a key report.

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    Sigma Xi Member William D. Nordhaus Wins Sveriges Riksbank Prize in Economic Sciences

    Member William D. Nordhaus of Yale University received half of the Sveriges Riksbank Prize in Economic Sciences in Memory of Alfred Nobel.

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    Win Free Registration to the Student Research Conference

    Students can win free registration to the Sigma Xi Student Research Conference taking place October 26–28 at the Hyatt Regency San Francisco Airport in California!

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    Sigma Xi Member Arthur Ashkin Wins 2018 Nobel Prize in Physics

    The Royal Swedish Academy of Sciences awarded half of the 2018 Nobel Prize in Physics to Sigma Xi member Arthur Ashkin.

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    Procter Prize and Certificate

    Deadline for Award Nominations Extended to December 1

    The public may submit nominations by December 1 for Sigma Xi’s 2019–2020 prizes and awards program, which recognizes major achievements in science, engineering, and science communication.

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    Nicholas Ramirez

    International Research Conference Celebrates National Hispanic Heritage Month

    Students and faculty from Hispanic-serving institutions receive a 50 percent registration discount to the Sigma Xi Annual Meeting and Student Research Conference through October 15.

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    Student Research Conference

    Science and Engineering Students Will Compete in an International Research Competition

    Sigma Xi invites science and engineering students in high school through graduate school from around the world to its annual Student Research Conference.

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    SAS

    SAS Will Demonstrate Its Visual Data Mining and Machine Learning Product at Sigma Xi’s Annual Meeting and Student Research Conference

    Participants of the Sigma Xi 2018 Annual Meeting and Student Research Conference will have access to an on-site demonstration from SAS, an analytics software and services company.

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    Sigma Xi Elections

    President-Elect Candidates Share Goals for Sigma Xi’s Future

    The three members who are running for president-elect in the 2018 Sigma Xi elections share their goals for the Society.

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    Frank Summers

    Tools for Communicating Science

    Science communication sessions have been added to the program of the 2018 Annual Meeting and Student Research Conference.

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    Student Research Grant Applications Due October 1

    Sigma Xi invites undergraduate and graduate students to apply for a research grant by October 1.

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    Procter Prize Winner Unlocked Viruses’ Secrets

    A biologist who dedicated much of her career to studying retroviruses will receive Sigma Xi’s 2018 William Procter Prize for Scientific Achievement.

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    Steve Ritz

    Annual Meeting to Feature Symposium on Big Data in Physics and Astronomy

    Sigma Xi will bring together the research community October 25–28 for its Annual Meeting and Student Research Conference to discuss how scientists and engineers can adapt to the big data era.

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    David Flannigan

    Young Investigator Is Enhancing Materials Science

    Dave Flannigan, an associate professor at University of Minnesota, is the recipient of Sigma Xi’s 2018 Young Investigator Award for his contributions to an emerging technology, ultrafast electron microscopy.

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    Nominations Sought for Sigma Xi Elections

    Sigma Xi is currently accepting nominations for members who can serve in leadership positions. All active members are eligible to vote online in the elections from October 29 to November 27.

    Click here to read more.

    Madhu Katti

    Asking, Receiving, and Giving Back: One Member's Full-Circle Journal in Grant-Writing

    Member Madhusudan Katti was a PhD student in 1993, when he asked Sigma Xi's Grants-in-Aid of Research program for help with funding his research. Now, he volunteers for the program by reviewing student grant proposals.

    Click here to read more.

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    Announcing the 2018 Award Winners

    The Society is pleased to announce the 2018 award winners. All of them will be featured speakers at the Annual Meeting and Student Research Conference.

    Click here to read more.

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    The New President's Plan

    Joel Primack, who became Sigma Xi president on July 1, plans to spend his one-year term pursuing two new initiatives. Primack calls for members and chapters to help with both ideas.

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    Robert Frederick accepts EXCEL awards

    American Scientist Wins Awards for Nonprofit Publishing

    Sigma Xi, The Scientific Research Honor Society’s magazine American Scientist has once again ranked among the top publications from nonprofit associations.

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    Stuart Cooper

    Farewell Message from the President

    Stuart L. Cooper will complete his one-year term as Sigma Xi president on June 30. In a farewell message, he reflects on the highlights of his year at the Society's helm and the work that remains.

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    Sigma Xi Awards Research Grants to Students in Spring 2018 Cycle

    In the spring 2018 cycle of its Grants-in-Aid of Research program, the Society awarded 197 grants totaling $191,082 to students.

    Click here to read more.

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    People's Choice Award Winner Aims to Improve Treatment for Pediatric Cancer

    Zhen Ye, a PhD student at University of Nebraska Medical Center, won the People’s Choice Award in Sigma Xi's 2018 Student Research Showcase.

    Click here to read more.

    Intel ISEF 2018 Sigma Xi Award Winners

    Interdisciplinary Research Awarded at Intel International Science and Engineering Fair

    Sigma Xi members selected outstanding teams at the 2018 Intel International Science and Engineering Fair to receive $6,000 from the Society's Special Awards.

    Click here to read more.

    Rachel Shoop Graduate Division Winner

    2018 Student Research Showcase Results

    Winners are announced from Sigma Xi's sixth Student Research Showcase, an online science communication competition. Vote today for the People's Choice Award winner!

    Click here to read more.

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    Researchers Awarded Grants to Build Educational Programs and Encourage Diversity in Research

    Three Sigma Xi chapters have been selected to receive grants to improve their programming.

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    William Moerner

    Honoring Nobel Prize Winners

    On April 20, 2018, Sigma Xi unveiled six new names to its Hall of Honor, adding members who won the Nobel Prize since 2014. The highlight of the event was a live teleconference with one of the Nobel laureates.

    Click here to read more.

    Carter Clinton

    Researching the Lives of Slaves

    Member and Howard University doctoral candidate Carter Clinton received a grant from Sigma Xi to investigate the African Burial Ground in New York City.

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    Stuart Cooper

    From the President: Sigma Xi's Lifeline

    Sigma Xi President Stuart Cooper encourages members to extend the honor of nomination to others, to support the Society's future of having a robust and active membership.

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    Marching Before White House

    Marching for Science

    On April 14, 2018, Sigma Xi members and chapters took to the streets for the second March for Science to demonstrate their support of using scientific research to guide public policy.

    Click here to read more.

    Jamie Vernon at Raleigh March for Science 2018

    The Importance of STEM Education

    At the March for Science in Raleigh, North Carolina, Sigma Xi Executive Director and CEO Jamie L. Vernon shared how investing in education of science, technology, engineering, and math for students from all backgrounds will support the nation's economy and future success.

    Click here to read more.

    Intel ISEF 2017 Special Awards

    Judges Needed in Pittsburgh

    The world’s largest international precollege science competition is coming to Pittsburgh, Pennsylvania, and Sigma Xi is looking for nonstudent members in the area to volunteer as judges.

    Click here to read more.

    March for Science 2017

    World’s Largest Research Honor Society Supports March for Science

    Sigma Xi is a sponsor of the flagship event in Washington, DC, and Executive Director and CEO Jamie Vernon will be a speaker at the march in Raleigh. Meanwhile, the Society’s network of chapters will have roles in multiple satellite events.

    Click here to read more.

    Hall of Honor

    Nobel Laureates Will Be Honored in Research Triangle Park

    Six Sigma Xi members who have made some of the most significant research discoveries in recent history will be honored in Research Triangle Park.

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