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Toward Resources and Processes Sustainability: Part I

circuit boards via a combined hydrometallurgical method consisting of high-pressure oxidative leaching and thiourea leaching. Thiourea is selected as an alternative to cyanide - XIAOFEI GUAN Xiaofei Guan

Recent Developments in Deriving Values from Resource Recovery at Multiple Scales

. evaluate the economic viability of recycling critical REEs, such as praseodymium, neodymium, and dysprosium, from HDDs based on an electroMingming Zhang, Xiaofei Guan, and John Howarter are the JOM advisors

Clean Metals Production by Solid Oxide Membrane Electrolysis Process

This paper reviews a clean metals, production technology that utilizes an oxygen-ion-conducting solid oxide membrane (SOM) to directly electrolyze metal oxides dissolved in a non-consumable molten salts. During the SOM electrolysis process, the desired metal such as magnesium, aluminum, silicon, or a rare earth is produced at the cathode while pure oxygen gas evolves at the anode...

Puncture Reduction in Percutaneous Transforaminal Endoscopic Discectomy with HE’s Lumbar LOcation (HELLO) System: A Cadaver Study

Background Percutaneous transforaminal endoscopic discectomy (PTED) usually requires numerous punctures under X-ray fluoroscopy. Repeated puncture will lead to more radiation exposure and reduce the beginners' confidence. Objective This cadaver study aimed to investigate the efficacy of HE’s Lumbar Location (HELLO) system in puncture reduction of PTED. Study design Cadaver study...

Energy-Efficient and Environmentally Friendly Solid Oxide Membrane Electrolysis Process for Magnesium Oxide Reduction: Experiment and Modeling

XIAOFEI GUAN, Postdoctoral Research Associate, and UDAY B. PAL, Professor, are with the Department of Mechanical Engineer- ing and the Division of Materials Science and Engineering, Boston University

Diffusion Tensor Imaging Studies of Cervical Spondylotic Myelopathy: A Systemic Review and Meta-Analysis

A meta-analysis was conducted to assess alterations in measures of diffusion tensor imaging (DTI) in the patients of cervical spondylotic myelopathy (CSM), exploring the potential role of DTI as a diagnosis biomarker. A systematic search of all related studies written in English was conducted using PubMed, Web of Science, EMBASE, CINAHL, and Cochrane comparing CSM patients with...

Triptans in prevention of menstrual migraine: a systematic review with meta-analysis

Randomized clinical trials (RCT) assessing the efficacy and tolerability of triptans compared with placebo as short-term prophylaxis of menstrual migraine (MM) were systematically reviewed in this study. Triptans, which interfere with the pathogenesis of migraine and are effective in relieving associated neurovegetative symptoms, have been extensively proposed for prevention of...

Therapeutic efficacy and safety of botulinum toxin type A in trigeminal neuralgia: a systematic review

Trigeminal neuralgia is a common disorder caused mainly by compression of the trigeminal nerve root by an overlying blood vessel. Pharmacotherapy and surgery are ineffective or unsuitable in many patients. Therefore, other therapeutic modalities have been tried, including injection of botulinum toxin type A (BTX-A). This study aims to systematically review the therapeutic...