نتایج جستجو برای: rare materials

تعداد نتایج: 671388  

Journal: :Minerals 2023

In a study funded by the U.S. Department of Energy (DOE) National Technology Laboratory (NETL), University North Dakota (UND) and Environmental Research Center (EERC) performed first-of-its-kind round-robin interlaboratory (RRIS) to determine lab-to-lab method-to-method variability in analyzing rare earth element (REE) content domestic resources. Analyses REEs on eleven different materials were...

Journal: :Chinese Physics B 2021

Recently, the family of rare-earth chalcohalides were proposed as candidate compounds to realize Kitaev spin liquid (KSL). In present work, we firstly propose an effective Hamiltonian consistents with symmetry group crystal structure. Then apply classical Monte Carlo simulations preliminarily study model and establish a phase diagram. When approaching low temperature limit, several magnetic lon...

Coursebooks are normally written to contain information, instruction, exposure, and activities that learn- ers at a particular level need to enhance their communicative competence in the target language. Howev- er, many global course books make attempts to include content, topics, and texts that do not disadvantage any learner around the world. That is why global course books normally do ...

Journal: :Physics Today 2021

Although the US has sufficient raw materials, domestic supply chain to alloy and manufacture rare-earth permanent magnets is almost nonexistent.

Introduction: Subcutaneous and mediastinal emphysema is a rare complication after tonsillectomy. This case presentation and literature review summarizes the existing literature on this unusual complication.  Materials and Methods: This study presents a case of a 21-year-old man who developed a cervical subcutaneous emphysema 6 days after tonsillectomy, whereby conservative treatment produced sp...

Journal: :Current Medical Research and Opinion 2022

Objective Access to clear, accurate information helps patients make informed healthcare decisions.1 We aimed identify barriers materials for with rare diseases.

Journal: :Applied physics reviews 2022

Hexagonal ABO 3 oxides ( A, B = cation) are a class of rich materials for realizing novel quantum phenomena. Their hexagonal symmetry, oxygen trigonal bipyramid coordination, and quasi-two dimensional layering give rise to properties distinct from those the cubic perovskites. As bulk materials, most focus in this has been on rare-earth manganites, RMnO R rare earth); these display coupled ferro...

2005
Mark W. Jones Brian Koper William F. Weatherhead

Symptomatic enteroliths are relatively rare. Most occur from ingestion of undigestible materials such as pits or bones. Primary enteroliths are usually from the condition of partial bowel obstruction, diverticular type diseases such as Meckel's or congenital bands. Gallstone ileus is also a more common cause of gastrointestinal stones. Enteroliths associated with Crohn's disease is an extremely...

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