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Oxygenenriched atmosphere

How To Use Wiki In The Classroom
The benefit accrues even at only modest enrichment. For example, air with oxygen enriched from 21% to only 30% – an enrichment of only 9% – will contain nearly 40% less nitrogen per unit. More and more classrooms are now learning, creating, reading, and testing online. In order to keep up with our technologically demanding lifestyles, the traditional classroom is making way for such innovative tools as wiki. Not only is this an inexpensive way to manage your classroom, it’s also a fun way to engage students in content across the curriculum.

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Nonmetallic material flammability on Oxygen Enriched Atmo spheres (OEA) is discussed with explanations based on the latest scientific un derstanding. Flammability consists of a combination of the ignition, combustion, and fire propagation behaviors of materials. Oxygen enriched atmosphere means an atmosphere containing more than 23.5 percent oxygen by volume. Permit-required confined space (permit space) means a confined space that has one or more of the following characteristics: Contains or has a potential to contain a hazardous atmosphere; Contains a material that has the potential for engulfing an.

“OEA” (Oxygen Enriched Atmosphere), as technically known to the professionals, is commonly very unknown subject – since the general feeling is that oxygen, being our life-line and.

@article{osti_6599209, title = {Flammability and sensitivity of materials in oxygen-enriched atmospheres}, author = {Stoltzfus, J M and Benz, F J and Stradling, J S}, abstractNote = {This. An oxygen-enriched atmosphere is defined as any atmosphere in which the concentration of oxygen exceeds 21 percent by volume or the partial pressure of oxygen exceeds 160 torr (millimeters of mercury), or both. In most commonly en- countered oxygen-enriched atmospheres an increased fire hazard is.

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The ignition of metallic materials in oxygen-enriched atmospheres by friction heating is the dominant ignition source in many cases of combustion, and this test shows the friction heating sensitivity of metals and alloys. The apparatus comprises a cylindrical chamber that can bear 65 MPa of pressure, and the schematic diagram is shown in Figure4.

Oxygen enriched Atmospheres can be one of the options to accompany you later than having extra time. It will not waste your time. understand me, the e-book will unconditionally sky you new business to read. Just invest little mature to right of entry this on-line pronouncement Astm Standards Related To Flammability And Sensitivity Of Materials.

Flammability and Sensitivity of Materials in Oxygen-Enriched Atmospheres: Sixth Volume. Editor (s): Dwight D. Janoff, Joel M. Stoltzfus. The concepts and practices used in the designing.

The reason is that oxygen enriched atmospheres increase the risk of fires and explosions. As the level of Oxygen increases the fire chemistry of materials change. This.

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Recovery of a precious metal value from refractory carbonaceous and sulfidic ores, concentrates or tailings which also include arsenic-containing components is improved by roasting the ore or ore concentrate in an oxygen-enriched gaseous atmosphere having an initial oxygen content from about 25 percent (by volume) to about 65 percent (by volume) while maintaining a reaction temperature of less.

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  1. Wikispaces.com
    Designed specifically for use in the classroom, wikispaces is a social writing platform that also acts as a classroom management tool by keeping teacher and students organized and on task. Not only does this site provide easy to use templates, it’s free and also has a variety of assessment tools. Teachers can also use wikispaces to create assignments and share resources.
  2. vermont castings wood stoves for sale near meAt its most basic level, this website is free to users. Some of its features include easy to use website templates with unlimited pages, used 4x8 trailer for sale and domain name, control over ads, and the chance to earn some money with ads, which can be used for the next class trip.
  3. 4g lte modem setupWith over 300,000 education based workspaces, this wiki-like website offers educators a range of options that encourage student-centered learning. Students can build web sites or web pages that can be shared with other students and staff.

In an oxygen rich environment the factors that you have in a normal atmospheric air that reduce the possibility of sparks being an ignition source are greatly reduced. Fires require 3 things to start, 1 an ignition source (open flame, sparks, or even embers), 2 a fuel supply (something that will burn), and finally Oxygen. In an oxygen rich environment the factors that you have in a normal atmospheric air that reduce the possibility of sparks being an ignition source are greatly reduced. Fires require 3 things to start, 1 an ignition source (open flame, sparks, or even embers), 2 a fuel supply (something that will burn), and finally Oxygen.

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  1. Set Clear Expectations
    Before setting wiki guidelines and sharing them with your students, consult your school’s policies on social media. Provide students with written guidelines that must be adhered to. Let students know that if they publish inappropriate content, there will be consequences. Asking students to sign a contract is also an option.
  2. Start Small
    Take baby steps. Everyone will benefit from gradually increasing wiki use in the classroom. By starting small, teacher’s can stay on top of monitoring classroom wiki, thus remaining in control.
  3. Ask for Help
    Although wiki is fairly easy to use, there are times when you’ll run into stumbling blocks. Ask for help when you don’t understand something. You’d be surprised at much your students and colleagues might know about wiki.
  4. Read other Wikis
    As a class and individually, explore other classroom wikis. This will give you ideas and inspirations for your own wiki pages.
  5. Let Wiki Work for You
    Wiki is more than just a learning tool for students; it’s a communication tool for teachers. Use wiki to keep parents informed and post assignments and other class related content. Your wiki page is easily edited and updated so there’s no more need for a last minute trip to the copy machine.
  6. School-wide Wikis
    Use wikis to showcase field trips, class events and school-wide events, such as the prom or last week’s football game.
  7. Pinterest
    This site has a wealth of information on wiki for the classroom. Simply type in a search term such as "wiki tips for the classroom".  If you don’t already have a Pinterest account, learn more about it through vintage settings for round diamonds.
  8. Collaborate
    Do lots and lots of group work. Create assignments that require students to work together, continuously communicating as part of team as they would in the real world.  For example, a media class can work in teams to create an advertisement for a product of their choice that involves print and/or video.  For a science class, have students work together as a research team investigating the sudden drop in the local wolf population.
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  1. Historical Figures
    Instead of just another boring academic paper on an historical figure, make research and documentation fun by creating wiki fan pages. Students can add and edit text, post photos and famous quotes, as well as links to the references they used.
  2. Student as Editor
    Turn grammar into a challenging and competitive game. Have students use wiki to edit text with grammatical errors. Teachers can put students into groups and those with the most edits wins.  Individual edits can also be counted.
  3. Join the Debate Team
    Using a written set of guidelines, teachers post topics that students can argue by using wiki online forums. Teachers will monitor the discussions/debates while students learn online debate etiquette.
  4. Create a Collaborative Story
    Start with one sentence pulled from a hat, “The girl looked beyond the dusty field and saw a team of horses approaching, their riders hands tied behind their backs.” From here, students add and edit text to create a story. Set a minimum amount of words each student must submit. Chances are, you’ll actually have to set a maximum amount of words.
  5. Poetry Class
    For English class, the teacher can post a poem online and have the students discuss its meaning.  Students can also post their own poems for peer review.
  6. Book and Film Reviews
    Students can use wiki to write assigned book and film reviews. Other students can add to as well as comment and discuss the reviews on a monitored forum.
  7. Word Problems
    For math class, teachers can post word problems on wiki. Students work individually or in groups to solve the problems.
  8. Wiki Worlds
    For history and social studies, students can create pages for historical events such as famous battles or specific periods in history, creating entire worlds based on historical facts.
  9. Geography
    Wiki pages can be used to study geography by giving states or countries their own wiki page. Have students include useful and unique information about each geographical area.
  10. Fact Checking
    The reason why wikis is often blacklisted as a reputable source is because not everyone who contributes to a wiki page is an expert. Keep your students on their toes by assigning them to fact check each other’s work.
  11. Riddles
    Encourage teamwork by posting riddles and having groups of students solve them through online collaboration. The students will use a forum to discuss what the possible answer is.
  12. Group Assessments and Tests
    As an alternative way to administer assessments, consider using wiki group assessments.  Students work together, helping one another to achieve success.

Fire-suppression agent requirements for extinguishing fires in oxygen-enriched atmospheres were determined employing small-, medium-, large-, and full-scale test apparatuses. The small- and medium-scale tests showed that a doubling of the oxygen concentration required five times more HALON for extinguishment.

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Expert Answers: An oxygen-enriched atmosphere is defined as any atmosphere in which the concentration of oxygen exceeds 21 percent by volume or the partial pressure of oxygen. ... OSHA categorizes any oxygen level that is less than 19.5% as oxygen deficient and anything greater than 23.5% as oxygen-enriched air.
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