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COP26: Some Progress, But Nations Still Fiddling While World Warms

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Engineering 2022年第4期8卷 6-8页

作者： sean O’Neill Senior Technology Writer

From 31 October to 13 November 2021,in an impassioned and frequently tense gathering,the 26th United Nations Climate Change Conference of the Parties,known as COP26,convened in Glasgow,*** participants made some progress in terms of announced commitments to reduce carbon emissions,the major area of agreement appears to be that much more is needed for the planet to avoid potentially catastrophic warming.

关键词： gathering planet Glasgow

Handheld Ultrasound Advances Diagnosis

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Engineering 2021年第11期7卷 1505-1507页

作者： sean O’Neill 机构不详

In March 2021,Chicago,IL,USA-based medical imaging giant GE Healthcare launched the Vscan Air[1],a self-contained,handheld ultrasound probe,its latest and first wireless version of the increasingly sophisticated"pocket"ultrasound systems now marketed by multiple *** with advances in other medical technology[2,3],the devices are smaller,smarter,and leverage smartphone capabilities.

关键词： smart wireless Chicago

Satellite Tracking and Global Treaty Effort Open New Front on Plastic Waste Problem

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Engineering 2022年第10期17卷 3-6页

作者： sean O’Neill Senior Technology Writer

As the rate of plastic production continues to climb towards a projected billion tonnes(Gt)a year by 2050(Fig.1)and the volume of plastic waste grows accordingly,a new satellite-based platform launched in May 2022 has... 详细信息

关键词： pollution continue Open

AI-Driven Robotic Laboratories Show Promise

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Engineering 2021年第10期7卷 1351-1353页

作者： sean O’Neill 机构不详

Elaborate proof-of-principle experiments in several laboratories around the world have recently offered glimpses of a future in which high-throughput automatic laboratories guided by artificial intelligence(AI)might enhance the process for discovery of new materials,such as those for clean energy *** in chemical engineering,using AI to aid in synthesis planning and performance offers the prospect of scientists needing little more than an idea and an internet connection to generate novel molecules in state-of-the-art,remote *** in August 2020,International Business Machine Corporation(IBM)’s RoboRXN for Chemistry provides a high-profile example of the potential for combining AI and laboratory automation[1].The system not only provides chemical recipes to produce organic molecules of interest but can also synthesize those molecules automatically using commercially available hardware—in the case of IBM’s demonstrator,a Flex-category automated-synthesis workstation(Fig.1)manufactured by Chemspeed Technologies(Füllinsdorf,Switzerland).

关键词： hardware Promise laboratories

Battery Recycling Challenge Looms as Electric Vehicle Business Booms

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Engineering 2021年第12期7卷 1657-1660页

作者： sean O’Neill Senior Technology Writer

In June 2021,the Ontario,Canada-based company Li-Cycle announced plans to,by the end of 2021,begin construction of North America’s largest lithium-ion battery(LIB)-recycling facility in Rochester,NY,*** automakers increasingly switch to electric vehicle(EV)production,the move addresses what the“resource recovery”company’s chief executive officer,Ajay Kochhar,hyperbolically has described as an incoming“battery tsunami”[1].

关键词： battery Battery cycling

Direct Air Carbon Capture Takes Baby Steps——Giant Strides Are Needed

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Engineering 2022年第1期8卷 3-5页

作者： sean O’Neill Senior Technology Writer

In September 2021, the world’s largest industrial plant to pull carbon dioxide（CO;） directly out of the atmosphere officially became operational in Iceland. Designed and built by the Zurich,Switzerland-based company Climeworks, its "Orca" facility-the company claims-can remove and permanently store 4000 t of CO;per year（Fig. 1） [1].

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Controlled fabrication of Pr(OH)_3 nanowires for enhanced photocatalytic activities

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Journal of Rare Earths 2019年第1期37卷 60-67,M0004页

作者： Nan Chen Adnan Younis Dewei Chu sean Li School of Materials Science and Engineering University of New South Wales

In this report, praseodymium hydroxide Pr(OH)_3 nanowires with different aspect ratios (length to diameter ratios) were synthesized by a facile hydrothermal approach. The variations in alkali concentration during synthesis are found to form different aspect ratios of nanowires. The X-ray diffraction and Raman spectroscopy analysis demonstrate the absence of any impurity phases in as-prepared ***, photocatalytic activities of as-prepared nano wires were evaluated by the degradation of methyl orange (MO). Our findings reveal that the nanowires with larger aspect ratios have higher photocatalytic efficiency than the smaller aspect ratio samples. X-ray photospectroscopy investigations reveal that the samples with higher aspect ratio are found to exhibit more oxygen vacancies as compared to lower aspect ratio samples. The enhanced photocatalytic activities can be attributed to the presence of higher percentage of active crystal facet (100), higher concentration of defects densities and narrower band gap. Thus, Pr(OH)_3 nanowires can be considered as a potential candidate for the application of wastewater treatment and related technologies.

关键词： Praseodymium hydroxide Nanowires Photocatalyst Rare earths

Adaptive control for reliable cooperative intersection crossing of connected autonomous vehicles

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International Journal of Mechanical System Dynamics 2022年第3期2卷 278-289页

作者： Yu Wei Xiaozheng(sean)He Department of Civil and Environmental Engineering Rensselaer Polytechnic InstituteTroyNew YorkUSA

Rapid advances in vehicle automation and communication technologies enable connected autonomous vehicles(CAVs)to cross intersections cooperatively,which could significantly improve traffic throughput and safety at *** platooning,designed upon car‐following behavior,is one of the promising control methods to promote cooperative intersection crossing of ***,demand variation raises safety and stability concerns when CAVs adopt a virtual platooning control *** this line,this study proposes an adaptive vehicle control method to facilitate the formation of a virtual platoon and the cooperative crossing of CAVs,factoring demand variations at an isolated *** study derives the stability conditions of virtual CAV platoons depending on the time‐varying traffic *** on the derived stability conditions,an optimization model is proposed to adaptively control CAVs dynamics by balancing approaching traffic mobility and safety to enhance the reliability of cooperative crossing at *** simulation results show that,compared to the nonadaptive control,our proposed method can increase the intersection throughput by 18.2%.Also,time‐to‐collision results highlight the advantages of the proposed adaptive control in securing traffic safety.

关键词： connected autonomous vehicles virtual platooning cooperative intersection crossing optimization stability

The Silk Road and Sources of Chinese Medicine Expansion: Part 1 – Materia Medica

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Chinese Medicine and Culture 2018年第1期1卷 29-31页

作者： sean Bradley Deaprtment of Asian Languages and Literature University of WashingtonWashingtonUSA

The Silk Road stretched over land and across seas connecting Europe,Africa,and *** trade of medicine along these routes has had profound impacts on the populations and traditions they have come into contact *** Medicine is no exception as it has taken numerous nonnative products and incorporated them into the unique philosophical construct of systematic correspondences that govern its *** looking at the four categories of primary source materials and studying the history of medical exchange along the Silk Road,we can determine how and where this information is used in Chinese *** Materia Medica(ben cao本草)texts are the first source of information for this study that will explore multiple sources to better understand the development of Chinese Medicine in relation to the rest of the world.

关键词： Chinese Medicine Materia Medica medical exchange Silk Road