In recent years, recovery of rare earth elements (REEs) from coal fly ashes (CFAs) has been considered as a promising resource recovery option. Yet, quantitative …Web

(0.0K) AccessScience turns the world's leading science encyclopedia, The McGraw-Hill Encyclopedia of Science & Technology, into an updated database that delivers the high-quality information synonymous with the print publication with the immediacy that only the online environment can provide. AccessScience contains 7,000 articles, 115,000 …Web

Based on the mechanism of luminescence resonance energy transfer (LRET) and using a special single strand DNA as the recognition element, a portable paper-based sensor for the accurate detection of total heavy rare-earth ions (mainly Gd3+, Tb3+ and Dy3+) concentration was proposed. The RNA cleaving-DNAzyme should recognize rare …Web

The Rare Earth hypothesis argues that a confluence of very specific environmental factors is responsible for Earth's ability to support complex life. These same factors are very unlikely to be ...Web

The rare earth basket contains 17 metals. Each plays a vital role in the modern economy, for defense and for daily life. Lanthanum, for instance, helps produce colors on smart phone and computer ...Web

AccessScience content Self-assessment questions test basic comprehension and critical thinking skills View or download full-color images ... Earth Science Engineering & Materials Environmental Science DE-F(3F-ll z Psychiatry & Psychology Science Theory & Philosophy Zoology U c Botany Browse Articles Picks A B N K L o Popular This Week ...Web

The demand for novel, cost-effective, and environmentally friendly rare earth element and yttrium (REY) sources is essential. The recovery of REY and other valuable components from coal fly ash (CFA) may result in securing alternative resources, decreased disposal costs, and environmental protection, all of which may have positive effects. …Web

Rare-earth elements (REEs) comprise the 17 lanthanide series elements, Scandium (Sc), and Yttrium (Y). These elements serve as critical raw materials …Web

Rare earth fluoride nanocrystals are obtained from aqueous solution by fine control, 56,57 while high-quality monodisperse rare earth fluoride nanoplates are synthesized through a general route by the thermolysis of RE(CF 3 COO) 3 precursors in OA/ODE. 58,59 Composition of the mixed solvents, reaction temperature, and reaction time are finely ...Web

8 October 2021. A new method improves the extraction and separation of rare earth elements—a group of 17 elements critical for technologies such as smart phones and …Web

Rare earth elements (REEs) including fifteen lanthanides, yttrium and scandium are found in more than 250 minerals, worldwide. REEs are used in various …Web

AccessScience contains additional multimedia content including biographies, animations, videos, and projects to bring STEM learning to life. All content types have tools to save, cite, and share direct links to these resources, and all videos include closed-captioning. 1. View our collection of text and video biographies of prominent scientists.Web

January 11, 2023 at 11:00 am. In spring 1949, three prospectors armed with Geiger counters set out to hunt for treasure in the arid mountains of southern Nevada and southeastern California. In the ...Web

Rare earths are also driving the growth of green technologies, such as wind energy and electric vehicles, and may even give rise to new components for quantum computers. "The list just goes on ...Web

The ocean is the largest body of water on the planet. It provides a home to millions of plants and animals and helps produce oxygen and regulate the global climate. With this free resource brought to you exclusively from McGraw Hill's Access Science, students can take a deep dive into the mysteries of the Earth's oceans.Web

Rare earth elements are chemically similar and are sometimes used in similar ways "Rare earths" are a group of 17 chemically similar elements crucial to the manufacture of many hi-tech products ...Web

The fund is down 8.8% year to date as of Aug. 18. The most popular rare-earth fund is the VanEck Rare Earth/Strategic Metals ETF ( REMX ), which has an expense ratio of 0.54%, has been around ...Web

The elements range in crustal abundance from cerium, the 25th most abundant element of the 78 common elements in the Earth's crust at 60 parts per million, to thulium and lutetium, the least abundant rare-earth elements at about 0.5 part per million.Web

1. Introduction. Thermoelectric materials have drawn tremendous attention in the past two decades because they can enable devices that can harvest waste heat and convert it to electrical power thereby promising to improve the efficiency of fuel utilization [].The efficiency of a thermoelectric material is defined by the dimensionless figure of merit ZT = S 2 …Web

The U.S. was net import reliant on rare-earth elements in 2018, importing an estimated 11,130 metric tons of compounds and metals valued at $160 million. Eighty percent of those imports were ...Web

Rare earth oxides (REOs) and metals as an important class of materials have generated global interest in modern technology. Here, eight REOs (R 2 O 3, R = Yb, Er, Sm, Eu, Y, Gd, Dy, and Ce) are identified those are mostly used in diverse chemical and industrial sectors.In this concise review the applications of these REOs in corrosion …Web

Rare earth elements form neutral complexes with the bi-dentate ligand, 2,3-dihydroxynaphthalene (2,3-H 2 ND), and are extracted into ethyl acetate at an alkaline pH of 9–10. All these elements are then quantitatively stripped off into the aqueous phase using dilute hydrochloric acid and then determined by ICP-OES.Web

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This study presents a compilation of ongoing rare earth projects, including newly designed supply chains, and highlights regions with high REE supply potential. 2. …Web

According to the U.S. Geological Survey, "The Arctic is estimated to harbor over 90 billion barrels of oil reserves, 30 percent of the world's untapped natural gas, and around one trillion dollars' worth of rare earth minerals."[8] Thawing ice has also opened trans-Arctic shipping routes, including the Northern Sea Route (NSR) and the Northwest …Web

Μining waste, processing by-products and mine water discharges pose a serious threat to the environment as in many cases they contain high concentrations of toxic substances. However, they may also be valuable resources. The main target of the current review is the comparative study of the occurrence of rare earth elements (REE) in …Web

Discover which forms of radiation are harmless and, in fact, necessary for life on Earth, and investigate why the Sun's UV rays can be harmful, but life depends on its light and heat. Download the student handout from McGraw Hill's AccessScience above to use in your lesson plans. This authoritative resource contains insightful, high-quality ...Web

Low-grade sources of rare earth elements (REE), for example from industrial waste, typically contain many rare earth elements and other metals mixed together. The new method relies on a protein called lanmodulin (LanM) that first binds to all the rare earth elements in the source. Then other metals are drained and removed.Web