- Last 7 days
-
psyarxiv.com psyarxiv.com
-
Nan, X., Wang, Y., & Thier, K. (2021). Health Misinformation. PsyArXiv. https://doi.org/10.31234/osf.io/jt3ur
-
-
www.theatlantic.com www.theatlantic.com
-
The most durable narratives are not the ones that stand up best to fact-checking.
-
- Jun 2021
-
eur-lex.europa.eu eur-lex.europa.eu
-
t a common foreign and security policy including the eventual framing of a common defence policy, which might in time lead to a common defence, thereby reinforcing the European identity and its independence in order to promote peace, security and progress in Europe and in the world,REAFFIRMING their objective to facilitate the free movement of persons, while ensuring the safety and security of their peoples, by including provisions on justice and home affairs in this Treaty,RESOLVED to continue the process of creating an ever closer union among the peoples of Europe, in which decisions are taken as closely as possible to the citize
-
ICOMMON PROVISIONSArticle ABy this Treaty, the High Contracting Parties establish among themselves a European Union, hereinafter called 'the Union`.This Treaty marks a new stage in the process of creating an ever closer union among the peoples of Europe, in which decisions are taken as closely as possible to the citizen.The Union shall be founde
Tags
Annotators
URL
-
-
-
Website makes false claims about vaccines and miscarriages—Full Fact. (n.d.). Retrieved June 30, 2021, from https://fullfact.org/online/Covid-vaccine-miscarriage-false/
-
-
-
Telegraph suggests 9% of England dies each year—Full Fact. (n.d.). Retrieved June 29, 2021, from https://fullfact.org/health/telegraph-suggests-9-england-dies-each-year/
-
-
-
Covid-19 vaccine did not kill every animal it was tested on—Full Fact. (n.d.). Retrieved June 27, 2021, from https://fullfact.org/online/covid-vaccine-animal-testing/
-
-
twitter.com twitter.com
-
ViralFacts on Twitter: “Your questions answered: Why some COVID-19 vaccines require two doses #ViralFactsAfrica #VFACheck https://t.co/hytCd2pd80” / Twitter. (n.d.). Retrieved June 26, 2021, from https://twitter.com/viralfacts/status/1394213113541574658
-
-
www.reuters.com www.reuters.com
-
Fact Check-COVID-19 vaccines are not ‘cytotoxic’ | Reuters. (n.d.). Retrieved June 25, 2021, from https://www.reuters.com/article/factcheck-vaccine-cytotoxic/fact-check-covid-19-vaccines-are-not-cytotoxic-idUSL2N2O01XP
-
-
arxiv.org arxiv.org
-
Singh, K., Lima, G., Cha, M., Cha, C., Kulshrestha, J., Ahn, Y.-Y., & Varol, O. (2021). Misinformation, Believability, and Vaccine Acceptance Over 40 Countries: Takeaways From the Initial Phase of The COVID-19 Infodemic. ArXiv:2104.10864 [Cs]. http://arxiv.org/abs/2104.10864
-
-
covid19misinfo.org covid19misinfo.org
-
COVID-19 Fact-checkers -. (n.d.). Retrieved 21 June 2021, from https://covid19misinfo.org/fact-checking/covid-19-fact-checkers/
-
-
fullfact.org fullfact.org
-
Ian Brown wrong to claim Japan refuses blood from anyone who’s been vaccinated—Full Fact. (n.d.). Retrieved June 5, 2021, from https://fullfact.org/online/ian-brown-wrong-to-claim-japan-refuses-blood-from-anyone-whos-been-vaccinated/
-
- May 2021
-
-
The Moderna vaccine contains SM-102 not chloroform—Full Fact. (n.d.). Retrieved May 26, 2021, from https://fullfact.org/health/SM-102/
-
-
-
Shahi, G. K., & Nandini, D. (2020). FakeCovid—A Multilingual Cross-domain Fact Check News Dataset for COVID-19. ArXiv:2006.11343 [Cs]. https://doi.org/10.36190/2020.14
Tags
Annotators
URL
-
-
twitter.com twitter.com
-
Full Fact on Twitter. (n.d.). Twitter. Retrieved 5 March 2021, from https://twitter.com/FullFact/status/1330922811448315911
-
- Apr 2021
-
-
Swenson, A. (2021, April 20). Study lacks evidence on masks, isn’t linked to Stanford. AP NEWS. https://apnews.com/article/fact-checking-629043235973
-
- Mar 2021
-
psyarxiv.com psyarxiv.com
-
Rebitschek, F., Ellermann, C., Jenny, M., Siegel, N. A., Spinner, C., & Wagner, G. (2021). How skeptics could be convinced (not persuaded) to get vaccinated against COVID-19. PsyArXiv. https://doi.org/10.31234/osf.io/f4nqt
-
-
twitter.com twitter.com
-
Dr Nisreen Alwan 🌻. (2021, January 18). Scientists don’t have total objectivity. We have beliefs, experiences & feelings that make us subjective & shape our interpretation of facts just like other humans. I trust the scientists who admit this more than the ones who pretend they’re above it. Best u can do is to be open. [Tweet]. @Dr2NisreenAlwan. https://twitter.com/Dr2NisreenAlwan/status/1351074354629668866
-
- Feb 2021
-
www.washingtonpost.com www.washingtonpost.com
-
Doonesbury
Fact Check!
Did mid-1990s coders really eat Skittles for major meals?
Answer: Maybe. Douglas Coupland's short story "Microserfs" ', a cover story in Wired in 1994 and later a novel, includes explicit references to skittles, and suggests that they could be the right meal for coders (although breakfast is not specifically mentioned).
-
-
skepticalscience.com skepticalscience.com
-
Konstantinos, A. (2021). Tips on countering conspiracy theories and misinformaton. CommsFlyer.
-
-
psyarxiv.com psyarxiv.com
-
Bavel, J. J. V., Reinero, D. A., Spring, V., Harris, E. A., & Duke, A. (2021). Speaking my truth: Why personal experiences can bridge divides but mislead. PsyArXiv. https://doi.org/10.31234/osf.io/9jcem
-
-
www.nature.com www.nature.com
-
Loomba, S., de Figueiredo, A., Piatek, S. J., de Graaf, K., & Larson, H. J. (2021). Measuring the impact of COVID-19 vaccine misinformation on vaccination intent in the UK and USA. Nature Human Behaviour, 1–12. https://doi.org/10.1038/s41562-021-01056-1
-
-
psyarxiv.com psyarxiv.com
-
Allen, J. N. L., Arechar, A. A., Pennycook, G., & Rand, D. G. (2020, October 1). Scaling Up Fact-Checking Using the Wisdom of Crowds. https://doi.org/10.31234/osf.io/9qdza
-
- Dec 2020
-
psyarxiv.com psyarxiv.com
-
Bor, A., Osmundsen, M., Rasmussen, S. H. R., Bechmann, A., & Petersen, M. (2020, September 24). "Fact-checking" videos reduce belief in but not the sharing of "fake news" on Twitter. https://doi.org/10.31234/osf.io/a7huq
-
- Nov 2020
-
acorwin.com acorwin.com
-
The answer should be: you write a language that compiles to Go’s IR.
-
One important other option is using another programming language as your IR! If you can compile (or perhaps more accurately transpile) your language into C, then you can leverage gcc (or clang, etc) into compiling that all the way down into machine code.
-
-
www.indeed.com www.indeed.com
-
4. Can you explain the design schemas relevant to data modeling?Hiring teams may question you about design schemas as a way to test your knowledge of the fundamentals of data engineering. When you respond, do your best to explain the concept clearly and concisely.Example: “Data modeling involves two schemas, star and snowflake. Star schema includes dimension tables that are connected to a fact table. Snowflake schema includes a similar fact table and dimension tables with snowflake-like layers.”
- [[data modeling]]
- ability to explain schemas and schema types, [[star schema]] [[snowflake schema]]
-
-
Local file Local file
-
Over a 10-month period, background information on the commu-nity structure, governance and use of natural resources was collectedfrom interviews with all relevant groups within the two communities(including decision-makers, men and women, elders and youth).
gathered about natural resources, community organization, governance.
-
- Oct 2020
-
facebook.github.io facebook.github.io
-
However, this would lead to further divergence. Tooling that is built around the assumptions imposed by template literals wouldn't work. It would undermine the meaning of template literals. It would be necessary to define how JSX behaves within the rest of the ECMAScript grammar within the template literal anyway.
-
-
gist.github.com gist.github.com
-
This is valid javascript! Or harmony or es6 or whatever, but importantly, it's not happening outside the js environment. This also allows us to use our standard tooling: the traceur compiler knows how to turn jsx`<div>Hello</div>`; into the equivalent browser compatible es3, and hence we can use anything the traceur compile accepts!
-
-
-
Doesn't require the use of transpiler or modifications to all JS tooling ever invented.
-
-
www.reddit.com www.reddit.com
-
r/BehSciResearch—Review on combatting the COVID misinformation flood. (n.d.). Reddit. Retrieved October 12, 2020, from https://www.reddit.com/r/BehSciResearch/comments/j9mrlp/review_on_combatting_the_covid_misinformation/
-
-
www.scientificamerican.com www.scientificamerican.com
-
Nouri, A. B., Ali. (n.d.). COVID Misinformation Is Killing People. Scientific American. Retrieved October 12, 2020, from https://www.scientificamerican.com/article/covid-misinformation-is-killing-people1/
-
-
ec.europa.eu ec.europa.eu
-
Anonymous. (2020, October 7). Second set of reports – Fighting COVID-19 disinformation Monitoring Programme [Text]. Shaping Europe’s Digital Future - European Commission. https://ec.europa.eu/digital-single-market/en/news/second-set-reports-fighting-covid-19-disinformation-monitoring-programme
-
-
web.hypothes.is web.hypothes.is
-
The Digipo toolkit
Perhaps I'm missing it, but is this not an open browser extension already? I'd love to have these pieces built as a WordPress or separate plugin. I've seen some of the pieces earlier today that look like they've been unbundled, but I'd love to have the rest...
-
the event in Miami on Inauguration Day (site:www.sourcewatch.com OR site:www.factcheck.org OR site:hoax-slayer.com OR site:www.truthorfiction.com OR site:opensecrets.org OR site:www.politifact.com OR site:snopes.com OR site:www.washingtonpost.com/news/fact-checker/ OR site:digipo.io)
just this piece makes this a powerful little tool!
-
-
github.com github.com
-
Why struggle with custom Syntax DSLs when you can use one so widely supported?
-
It was only pragmatic to use a tool that basically gives you that all for free.
-
-
oro.open.ac.uk oro.open.ac.uk
-
Burel, Gregoire; Farrell, Tracie; Mensio, Martino; Khare, Prashant and Alani, Harith (2020). Co-Spread of Misinformation and Fact-Checking Content during the Covid-19 Pandemic. In: Proceedings of the 12th International Social Informatics Conference (SocInfo), LNCS.
-
-
www.thelancet.com www.thelancet.com
-
Galvão, J. (2020). COVID-19: The deadly threat of misinformation. The Lancet Infectious Diseases, 0(0). https://doi.org/10.1016/S1473-3099(20)30721-0
-
-
psyarxiv.com psyarxiv.com
-
MacFarlane, Douglas, Li Qian Tay, Mark J. Hurlstone, and Ullrich Ecker. ‘Refuting Spurious COVID-19 Treatment Claims Reduces Demand and Misinformation Sharing’, 30 September 2020. https://doi.org/10.31234/osf.io/q3mkd.
-
- Sep 2020
-
www.youtube.com www.youtube.com
-
Prof Fiona Fidler | Collaborative assessment for trustworthy science: The repliCATS project. (2020, July 27). https://www.youtube.com/watch?v=KhDKzEsPouI&feature=youtu.be
-
-
twitter.com twitter.com
-
Imperial College on Twitter. (n.d.). Twitter. Retrieved September 23, 2020, from https://twitter.com/imperialcollege/status/1307693797074178049
-
-
www.youtube.com www.youtube.com
-
ACTUAL DOCTOR WATCHES COVID PSEUDOSCIENCE VIDEO. (2020, September 15). https://www.youtube.com/watch?v=DUDg5ossirU&feature=youtu.be
-
-
github.com github.com
-
One key advantage of 'HTML-plus' languages is that you don't actually need tooling in order to be productive — most editors give you out-of-the-box support for things like syntax highlighting (though imperfect, as JavaScript expressions are treated as strings) and auto-closing tags. Tools like Emmet work with no additional setup. HTMLx should retain that benefit.
-
-
www.theguardian.com www.theguardian.com
-
Facts v feelings: How to stop our emotions misleading us. (2020, September 10). The Guardian. http://www.theguardian.com/science/2020/sep/10/facts-v-feelings-how-to-stop-emotions-misleading-us
-
-
rapidreviewscovid19.mitpress.mit.edu rapidreviewscovid19.mitpress.mit.edu
-
Rapid Reviews COVID-19. (n.d.). Rapid Reviews COVID-19. Retrieved September 11, 2020, from https://rapidreviewscovid19.mitpress.mit.edu/
-
-
twitter.com twitter.com
-
Seth Abramson on Twitter. (n.d.). Twitter. Retrieved September 8, 2020, from https://twitter.com/SethAbramson/status/1303059307378995210
-
-
psyarxiv.com psyarxiv.com
-
Fazio, L., Hong, M. K., & Dias, N. (2020). Debunking rumors around the French election: The memorability and effectiveness of misinformation debunks [Preprint]. PsyArXiv. https://doi.org/10.31234/osf.io/6mjbz
-
-
www.factcheck.org www.factcheck.org
-
Spencer, S. H. (2020, September 1). CDC Did Not “Admit Only 6%” of Recorded Deaths from COVID-19. FactCheck.Org. https://www.factcheck.org/2020/09/cdc-did-not-admit-only-6-of-recorded-deaths-from-covid-19/
-
-
-
Benedictus, Leo. ‘Reopening Universities Will Almost Certainly Not Cause 50,000 Deaths’. Full Fact. Accessed 7 September 2020. https://fullfact.org/health/ucu-50000-deaths/.
-
-
www.reddit.com www.reddit.com
-
r/BehSciMeta - Comment by u/VictorVenema on ”Can one distinguish between argument and fact? And, if yes, how?”. (n.d.). Reddit. Retrieved July 10, 2020, from https://www.reddit.com/r/BehSciMeta/comments/ho0qr1/can_one_distinguish_between_argument_and_fact_and/fxezalm
-
- Aug 2020
-
climatefeedback.org climatefeedback.org
-
Scientific Reference to Reliable Information on Climate Change. (2015, February 9). Climate Feedback. https://climatefeedback.org/
-
-
www.factcheck.org www.factcheck.org
-
Kiely, E., McDonald, J., Gore, D., Robertson, L., & Rieder, R. (2020, July 20). FactChecking Trump’s “Fox News Sunday” Interview. FactCheck.Org. https://www.factcheck.org/2020/07/factchecking-trumps-fox-news-sunday-interview/
-
-
-
Allen-Kinross, P. (n.d.). Government issues contradictory advice on travel quarantine. Full Fact. Retrieved July 16, 2020, from https://fullfact.org/health/coronavirus-travel-quarantine-confusion/
-
-
socialsciences.nature.com socialsciences.nature.com
-
Research, B. and S. S. at N. (2020, May 25). Imagining a different online world. Behavioural and Social Sciences at Nature Research. http://socialsciences.nature.com/users/397838-philipp-lorenz-spreen/posts/imagining-a-different-online-world
-
-
www.politifact.com www.politifact.com
-
Washington, D. of C. 1100 C. A. N. S. 1300B, & Dc 20036. (n.d.). PolitiFact - Fact-checking ‘Plandemic 2’: Another video full of conspiracy theories about COVID-19. @politifact. Retrieved August 27, 2020, from https://www.politifact.com/article/2020/aug/18/fact-checking-plandemic-2-video-recycles-inaccurat/
-
-
cyber.fsi.stanford.edu cyber.fsi.stanford.edu
-
University, © Stanford, Stanford, & Complaints, C. 94305 C. (n.d.). Virality Project (US): Marketing meets Misinformation. Retrieved 25 August 2020, from https://cyber.fsi.stanford.edu/io/news/manufacturing-influence-0
-
-
www.eluniversal.com.mx www.eluniversal.com.mx
-
por transferir sus plataformas operativas hacia los llamados softwares libres como OpenOffice o el tradicional Linux, las cuales podrían alcanzar efectivamente niveles aceptables de funcionalidad, pero incrementar el riesgo de fallas al carecer éstas de algún tipo de garantía.
Linux, LibreOffice y en general el software libre y de código abierto sí tiene garantía. De hecho el modelo de negocio del software libre es ofrecer varios servicios, como soporte, capacitación, acompañamiento, etc, en lugar de la venta de licencias.
Hablar de riesgo incrementado de fallas al caracer de "algún tipo de garantía" es cuando menos ignorante y a lo sumo malintencionado.
Sobre los servicios de soporte para Linux y Libre Office basta con hacer simples búsquedas en Internet:
Ambos listados contienen al menos decenas, si no centenares de compañías y profesionales independientes con amplia distribución geográfica.
Ahora bien, si se refiere a la cláusula "NO WARRANTY" o "AS IS" habitual en todos los productos de software, tanto libres como privativos, que libera a desarrolladores de daños derivados del uso de su software, esta es una cláusula que aparece también en productos de grandes oligopolios digitales (Apple, Microsoft, Google, Amazon). Tanto así que hacer parte de los estándares contractuales.
-
-
www.buzzfeednews.com www.buzzfeednews.com
-
Problems with fact checking in social media
-
-
www.youtube.com www.youtube.comYouTube1
-
Finding facts during a crisis / Stand with the Facts / KUOW / CIP. (n.d.). Retrieved 19 August 2020, from https://www.youtube.com/watch?v=mErLBpIz1f8
-
- Jul 2020
-
osf.io osf.io
-
Mikolai, J., Keenan, K., & Kulu, H. (2020). Household level health and socio-economic vulnerabilities and the COVID-19 crisis: An analysis from the UK [Preprint]. SocArXiv. https://doi.org/10.31235/osf.io/4wtz8
-
-
www.youtube.com www.youtube.com
-
American Philosophical Society. (2020, June 08). Evidence Symposium. YouTube. https://www.youtube.com/playlist?list=PLoKwLGnyZL4Ds5cQo5muFMg8zKXK4KobH
-
- Jun 2020
-
twitter.com twitter.com
-
David G. Rand en Twitter: “Today @GordPennycook & I wrote a @nytimes op ed ‘The Right Way to Fix Fake News’ https://t.co/dyF84g6oqv tl;dr: Platforms must rigorously TEST interventions, b/c intuitions about what will work are often wrong In this thread I unpack the many studies behind our op ed 1/” / Twitter. (n.d.). Twitter. Retrieved April 15, 2020, from https://twitter.com/DG_Rand/status/1242526565793136641
-
-
sg.finance.yahoo.com sg.finance.yahoo.com
-
President’s Reaction to Twitter Fact Check Is ‘Slapped Together,’ Says Stanford’s DiResta. (n.d.). Retrieved 9 June 2020, from https://sg.news.yahoo.com/presidents-reaction-twitter-fact-check-231129841.html
-
-
news.sky.com news.sky.com
-
The US president has claimed the social media platform is "interfering in the 2020 presidential election" and "completely stifling FREE SPEECH" after it added a warning to two of his tweets on Tuesday.
-
- May 2020
-
coronavirusexplained.ukri.org coronavirusexplained.ukri.org
-
explained, C. the science. (n.d.). Coronavirus: The science explained. Retrieved May 11, 2020, from https://coronavirusexplained.ukri.org/en/
-
-
www.wired.com www.wired.com
-
Porter, E. & Wood. T.J. (2020 May 14). Why is Facebook so afraid of checking facts? Wired. https://www.wired.com/story/why-is-facebook-so-afraid-of-checking-facts/
-
-
psyarxiv.com psyarxiv.com
-
Swire-Thompson, B., DeGutis, J., & Lazer, D. (2020, May 15). Searching for the backfire effect: Measurement and design considerations. https://doi.org/10.31234/osf.io/ba2kc
-
-
www.tandfonline.com www.tandfonline.com
-
Krause, N. M., Freiling, I., Beets, B., & Brossard, D. (2020). Fact-checking as risk communication: The multi-layered risk of misinformation in times of COVID-19. Journal of Risk Research, 1–8. https://doi.org/10.1080/13669877.2020.1756385
-
-
www.fox32chicago.com www.fox32chicago.com
-
Fox32Chicago. (2020 May 14). Chicago doctors come together to dispel misinformation, advise officials on pandemic. https://www.fox32chicago.com/video/684221
-
- Apr 2020
-
psyarxiv.com psyarxiv.com
-
Ecker, U. K. H., Lewandowsky, S., & Chadwick, M. (2020). Can Corrections Spread Misinformation to New Audiences? Testing for the Elusive Familiarity Backfire Effect [Preprint]. PsyArXiv. https://doi.org/10.31234/osf.io/qrm69
-
-
-
COVID-19: $6.5 million to help fight coronavirus misinformation. (2020, April 2). Google. https://blog.google/outreach-initiatives/google-news-initiative/covid-19-65-million-help-fight-coronavirus-misinformation/
-
-
infotagion.com infotagion.com
-
Home. (n.d.). Infotagion. Retrieved April 17, 2020, from https://infotagion.com/
Tags
Annotators
URL
-
- Jan 2020
-
mineralseducationcoalition.org mineralseducationcoalition.org
-
Chemically, europium’s reactions are similar to calcium. It is used in some superconductor alloys and in television screens, where it produces the red color.
europium has been popularly used for the red flash and light in smart phones.
-
-
-
Europium is used in the printing of euro banknotes. It glows red under UV light, and forgeries can be detected by the lack of this red glow.
When they scan a bill they are looking for the europium flash.
-
In 1901, Eugène-Anatole Demarçay carried out a painstaking sequence of crystallisations of samarium magnesium nitrate, and separated yet another new element: europium.
-
Low-energy light bulbs contain a little europium to give a more natural light, by balancing the blue (cold) light with a little red (warm) light.
-
A soft, silvery metal that tarnishes quickly and reacts with water.
-
-
www.chemistryexplained.com www.chemistryexplained.com
-
White phosphorus is a waxy, transparent solid. Its melting point is 44.1°C (111°F) and its boiling point is 280°C (536°F). It has a density of 1.88 grams per cubic centimeter. If kept in a vacuum, it sublimes if exposed to light.
the properties of Phosphorus.
-
-
blogs.elpais.com blogs.elpais.com
-
somewhere at the interfaces between the solder balls and the nickel-phosphorous pad. Solders are ductile tin-based materials, but during soldering they chemically react with the solid metals being soldered — such as the nickel-phosphorous alloy — to form intermetallic compounds.
How Phosphorus is used in a smartphone.
-
-
en.wikipedia.org en.wikipedia.org
-
Alloys[edit] Antimony forms a highly useful alloy with lead, increasing its hardness and mechanical strength. For most applications involving lead, varying amounts of antimony are used as alloying metal. In lead–acid batteries, this addition improves plate strength and charging characteristics.[49][59] For sailboats, lead keels are used as counterweights, ranging from 600 lbs to over 8000 lbs; to improve hardness and tensile strength of the lead keel, antimony is mixed with lead between 2% and 5% by volume. Antimony is used in antifriction alloys (such as Babbitt metal),[60] in bullets and lead shot, electrical cable sheathing, type metal (for example, for linotype printing machines[61]), solder (some "lead-free" solders contain 5% Sb),[62] in pewter,[63] and in hardening alloys with low tin content in the manufacturing of organ pipes. Other applications[edit] Three other applications consume nearly all the rest of the world's supply.[48] One application is as a stabilizer and catalyst for the production of polyethylene terephthalate.[48] Another is as a fining agent to remove microscopic bubbles in glass, mostly for TV screens;[64] antimony ions interact with oxygen, suppressing the tendency of the latter to form bubbles.[65] The third application is pigments.[48] Antimony is increasingly being used in semiconductors as a dopant in n-type silicon wafers[66] for diodes, infrared detectors, and Hall-effect devices. In the 1950s, the emitters and collectors of n-p-n alloy junction transistors were doped with tiny beads of a lead-antimony alloy.[67] Indium antimonide is used as a material for mid-infrared detectors.[68][69][70]
Potential uses in phone batteries and silicon wafers As semi conductors.
-
-
www.lenntech.com www.lenntech.com
-
this will eventually lead to increasing concentrations in humans, animals and soil particles.
blood clots could be made in a human or animal.
Tags
Annotators
URL
-
-
www.google.com www.google.com
-
Lead isotopes are the end products of each of the three series of naturally occurring radioactive elements.
lead is radioactive, so when you touch it, it can effect your body.
-
-
en.wikipedia.org en.wikipedia.org
-
Crushed minerals are extracted with hydrochloric acid or sulfuric acid, which converts the insoluble oxides into soluble chlorides or sulfates. The acidic filtrates are partially neutralized with caustic soda to pH 3–4. Thorium precipitates as its hydroxide, and is then removed. The remaining solution is treated with ammonium oxalate to convert rare earths into their insoluble oxalates. The oxalates are converted to oxides by heating. The oxides are dissolved in nitric acid that excludes one of the main components, cerium, whose oxide is insoluble in HNO3. The solution is treated with magnesium nitrate to produce a crystallized mixture of double salts of gadolinium, samarium and europium. The salts are separated by ion exchange chromatography. The rare-earth ions are then selectively washed out by a suitable complexing agent.[
Tags
Annotators
URL
-
-
mineralseducationcoalition.org mineralseducationcoalition.org
-
Most of the antimony mined each year comes from China, which supplies over three-quarters of the world’s total. The remainder is from Russia, South Africa, Tajikistan, Bolivia, and a few other countries, including the United States. Some antimony is produced as a by-product of smelting ores of other metals, mainly gold, copper and silver, in countries such as the United States, Canada, and Australia.
Top antimony producing countries
-
-
www.chemistryexplained.com www.chemistryexplained.com
-
Antimony is rarely found in its native (as an element) state. Instead, it usually occurs as a compound. The most common minerals of antimony are stibnite, tetrahedrite, bournonite, boulangerite, and jamesonite.
How antimony is found in nature
-
Antimony is a moderately active element. It does not combine with oxygen in the air at room temperature. It also does not react with cold water or with most cold acids. It does dissolve in some hot acids, however, and in aqua regia. Aqua regia is a mixture of hydrochloric and nitric acids. It often reacts with materials that do not react with either acid separately.
Chemical properties of antimony
-
Antimony is a silvery-white, shiny element that looks like a metal. It has a scaly surface and is hard and brittle like a non-metal. It can also be prepared as a black powder with a shiny brilliance to it. The melting point of antimony is 630°C (1,170°F) and its boiling point is 1,635°C (2,980°F). It is a relatively soft material that can be scratched by glass. Its density is 6.68 grams per cubic centimeter.
Physical properties of antimony
-
-
www.ncbi.nlm.nih.gov www.ncbi.nlm.nih.gov
-
Occupational exposure may cause respiratory irritation, pneumoconiosis, antimony spots on the skin and gastrointestinal symptoms. In addition antimony trioxide is possibly carcinogenic to humans.
Negative health effects of repeated exposure to antimony
-
-
-
Antimony is used in the electronics industry to make some semiconductor devices, such as infrared detectors and diodes. It is alloyed with lead or other metals to improve their hardness and strength. A lead-antimony alloy is used in batteries. Other uses of antimony alloys include type metal (in printing presses), bullets and cable sheathing. Antimony compounds are used to make flame-retardant materials, paints, enamels, glass and pottery.
Uses of antimony in technology
Tags
Annotators
URL
-
-
www.consumptionandenvironment.com www.consumptionandenvironment.com
-
Europium is mined in China and Russia in total quantity about 400 tones a year.
Mined in Many different places
-
-
www.businessinsider.com.au www.businessinsider.com.au
-
europium are crucial to your iPhone’s function – they’re used in the phone’s battery, as well as to help give the display screen colour and make the phone vibrate when you get a text,
Needed for normal function in Iphone.
-
-
mineralseducationcoalition.org mineralseducationcoalition.org
-
Lanthanum mainly is obtained from lanthanum-rich monazite and bastnasite. Other lanthanum-bearing minerals include allanite and cerite. It is mined in the USA, China, Russia, Australia, and India.
This is where Lanthanum is mined and where it comes from in the mines
-
-
www.lenntech.com www.lenntech.com
-
a relatively poor conductor of electricity
lead is a poor electricity conductor but good and used in phone batteries.
Tags
Annotators
URL
-
-
en.wikipedia.org en.wikipedia.org
-
Bauxite is the main source of the rare metal gallium
the source of gallium.
Tags
Annotators
URL
-
-
kids.kiddle.co kids.kiddle.co
-
Drift mining utilizes horizontal access tunnels, slope mining uses diagonally sloping access shafts, and shaft mining utilizes vertical access shafts. Mining in hard and soft rock formations require different techniques.
So different kinds of mining use different tunnel systems, how do we decide which kind is best in each situation?
Tags
Annotators
URL
-
-
en.wikipedia.org en.wikipedia.org
-
Environmental impacts of mining can occur at local, regional, and global scales through direct and indirect mining practices.
-
- Nov 2019
-
docs.microsoft.com docs.microsoft.com
-
A Timestamp parameter name, which is simply an identifier to access the trigger in code. A Schedule, which is a CRON expression that sets the interval for the timer.
-
-
docs.microsoft.com docs.microsoft.com
-
authorization level. By default, it's set to "Function", which requires a function-specific API key, but it can also be set to "Admin" to use a global "master" key, or "Anonymous" to indicate that no key is required. You can also change the authorization level through the function properties after creation. Since we specified "Function" when we created this function, we will need to supply the key when we send the HTTP request. You can send it as a query string parameter named code, or as an HTTP header (preferred) named x-functions-key.
-
By default, functions have a timeout of 5 minutes. This timeout is configurable to a maximum of 10 minutes. If your function requires more than 10 minutes to execute, you can host it on a VM. Additionally, if your service is initiated through an HTTP request and you expect that value as an HTTP response, the timeout is further restricted to 2.5 minutes. Finally, there's also an option called Durable Functions that allows you to orchestrate the executions of multiple functions without any timeout.
-
- Oct 2019
-
www.thedailybeast.com www.thedailybeast.com
-
Social change hardly requires such self-flagellation by the ruling class. Similarly, black America needs no grand, magic End of Days in order to succeed. A compact program of on-the-ground policy changes could do vastly more than articulate yearnings for a hypothetical psychological revolution among whites that no one seriously imagines could ever happen in life as we know it.
Author synthesizes his own course of action he thinks is correct
-
-
-
For the uninitiated, Granny Smith was Maria Ann Smith, a resident of the area who in 1868 "accidentally" grew the first batch of green apples that now bear her name.
Yes, good thinking. Throw in a truthful fact or two. Impressive!
-
- Aug 2019
-
bio.libretexts.org bio.libretexts.org
-
xylem parenchyma
These cells in the plant tend to be thin walled and extremely rigid, almost woody, due to the presence of lignin within the cell wall.
-
-
bio.libretexts.org bio.libretexts.org
-
Gymnosperms
There are currently only around 1000 gymnosperm species in existence, meanwhile there are 250,000-350,000 species of angiosperms.
-
ginkgos
Ginkgos are really neat looking. I also found it interesting that their English name and scientific name are the same. They are very hardy trees and can grow almost anywhere in the US.
-
plants have tissues that conduct food and water
These plant tissues (vascular tissues) are also known as "TRACHEOPHYTES". These Vascular tissues are made up of two main tissues - The Xylem and Phloem.
-
oxygen from photosynthesis
Plants do not always carry "breathe'' out oxygen - sometimes they produce CO2. This is mostly at night as they need to break down carbohydrates to produce energy and also there is no sunlight during the night. With sunlight being one of the main components in the Photosynthesis process, plants cannot produce oxygen at night.
Tags
Annotators
URL
-
- May 2019
-
countrystudies.us countrystudies.us