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Europium recovery process by means of polymeric nanoparticles functionalized with acrylic acid,curcumin and fumaramide

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journal of Rare Earths 2024年第10期42卷 1950-1959页

作者： P.A.Martínez-Montoya j.M.del Río A.de j.Morales-Ramirez M.Corea Escuela Superior de Ingeniería Química e Industrias Extractivas ESIQIE-IPNDepartamento de Ingeniería Metalúrgica UPALM S/N Col.Lindavista Escuela Superior de Ingenieria Química e Industrias Extractivas ESIQIE-IPNLaboratorio de Investigación en Polímeros y NanomaterialesUPALM S/N Col.Lindavista Centra de Investigación e Innovación Tecnológica CIITEC-IPNCda.de CECATIs/n

Polymeric nanoparticles of poly(methyl methacrylate) were obtained by emulsion polymerization techniques in a proce ss of two *** particles were functionalized with acrylic acid,curcumin,and fumaramide and three series of polymeric particles were *** incorporation of functional groups was confirmed by Fourier transform-infrared spectrosocopy(FT-IR) and ultraviolet-visible(UV-Vis) *** spherical morphology of particles with an average diameter of 100 nm was observed by scartning electron microscopy(SEM).The polymeric materials were used for recovery of [Eu]from synthetic *** nanoparticles show excellent chelation capacity to trap rare-earth ions,because they recover more than 85% of [Eu] at pH of *** images of SEM after extraction process show arrays between particles with larger average particle sizes to 1.5 *** addition,the particles have a good stripping capacity,exceeding 50% of it,maintaining their homogeneity in morphology and good stability in dispersion for the recovery and stripping processes.A pseudo-second model order is obtained for the extraction and stripping processes while the best results of stripping process are obtained at pH of6.

关键词： Chelating effect Emulsion polymerization Extraction process Rare earths Stripping process [Eu]recovery

Three New Missions Head for Mars

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Engineering 2020年第12期6卷 1336-1338页

作者： mitch Leslie 不详

An unprecedented trio of new spacecraft is now on its way to Mars to probe promising locations for ancient life and monitor the planet’s weather[1].The three missions launched by the United States,China,and the United Arab Emirates(UAE)blasted off during a ten-day period in july 2020,and each represents an exploration *** the Chinese and UAE missions are successful,they will mark the first Mars visits for those countries,as well as China’s first landing on the planet’s surface[2].The US National Aeronautics and Space Administration(NASA)mission,meanwhile,will set the stage for delivering the first samples of Martian rocks to Earth so they can be analyzed for traces of life[3].

关键词： weather Earth planet

Internet Satellite Boom Presents Astronomical Problems

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Engineering 2020年第8期6卷 849-850页

作者： mitch Leslie Senior Technology Writer

The SpaceX rocket that lifted off from the Kennedy Space Center in Florida on 22 April carried a payload that worries many astronomers[1].The 60 satellites that the rocket transported into space added to a population explosion of objects in low-Earth *** number of orbiting satellites visible to the unaided eye has already doubled in just over a year,according to calculations by astrophysicist jonathan McDowell of the Harvard–Smithsonian Center for Astrophysics in Cambridge,MA,*** the number of objects in low-Earth orbit could grow more than 10-fold this decade if SpaceX and other companies follow through on their plans to launch "mega-constellations"of hundreds or thousands of satellites[2].

关键词： payload companies hundreds

Hacking Contests Offer Big Payouts for Exposing Security Flaws

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Engineering 2022年第10期17卷 10-12页

作者： mitch Leslie Senior Technology Writer

Like any competitor,Yueqi Chen was anxious as he awaited the chance to demonstrate his skill in *** was the afternoon of 19May 2022,and Chen,then a visiting fellow in computer science at Northwestern University in Evanston,IL,USA,was sitting at a cloth-draped table in front of a small audience at Pwn2Own2022 Vancouver,a computer hacking competition held at the Vancouver Sheraton Wall Centre in Canada [1].

关键词： Canada computer Vancouver

The Next Energy Battle: Cheap Natural Gas versus Renewables

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Engineering 2021年第2期7卷 133-135页

作者： mitch Leslie 机构不详

Since 2011,a total of 121 power plants in the United States have stopped burning coal and switched to burning natural gas[1],which produces about 50%less carbon dioxide(CO2)per megawatt-hour of electricity generated than does burning coal[2,3].If current plans come to fruition,more than 170 new gas-fired generating plants could join them by the mid-2030s[4].These actions may reduce greenhouse gas emissions,but they were triggered less by concerns for the climate and more by the availability of cheap natural gas.

关键词： stopped burning switched

New US Rules Promise to Unlock Hearing Aid Availability

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Engineering 2022年第7期8卷 7-9页

作者： mitch Leslie Senior Technology Writer

One day in late 2022 or early 2023,a customer somewhere in the United States will make history by purchasing the first pair of hearing aids sold over the counter(OTC).For more than 40 years,these devices have been available in the United States and many other countries mainly through audiologists or other hearing *** updated regulations scheduled for enactment later this year by the Food and Drug Administration(FDA),the US agency that oversees drugs and medical devices,will allow retailers to sell hearing aids directly to consumers[1].

关键词： drugs Promise hearing

Harnessing naturally occurring mutations for T-cell therapy:a potential new avenue to enhance treatment efficacy

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Signal Transduction and Targeted Therapy 2024年第5期9卷 1799-1801页

作者： Michael Hiltensperger jürgen Ruland Kilian Schober Mikrobiologisches Institut-Klinische Mikrobiologie Immunologie und HygieneFriedrich-Alexander-Universität Erlangen-NürnbergErlangenGermany Institute of Clinical Chemistry and Pathobiochemistry School of MedicineTechnical University of MunichMunichGermany TranslaTUM Center for Translational Cancer ResearchTechnical University of MunichMunichGermany German Cancer Consortium(DKTK) HeidelbergGermany German Center for Infection Research(DZIF) partner site MunichMunichGermany FAU Profile Center Immunomedicine Friedrich-Alexander-Universität Erlangen-NürnbergErlangenGermany

In a recent study published in Nature,Garcia et *** a sophisticated approach to identify fitness-enhancing mutations for T cells that was inspired by cancer evolution.1 The identified CARD11-PIK3R3 gene fusion enhanced tumor rejection and persistence of engineered T cells in multiple tumor models and might have the potential to improve efficacy of adoptive T-cell therapies in cancer patients.

关键词： cancer potential

Glycolysis and glucose metabolism as a target for bioenergetic and neuronal protection in glaucoma

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Neural Regeneration Research 2024年第8期19卷 1637-1638页

作者： Pete A.Williams Robert j.Casson Department of Clinical Neuroscience Division of Eye and VisionSt.Erik Eye HospitalKarolinska InstitutetStockholmSweden Ophthalmic Research Laboratories Discipline of Ophthalmology and Visual SciencesUniversity of AdelaideAdelaideAustralia

Vision is arguably our most valued sense,yet approximately 340 million people globally suffer blindness or moderate visual impairment,highlighting the need to further develop and advance treatments for ophthalmic *** refers to a group of ocular disorders united by a clinically characteristic optic neuropathy with associated retinal ganglion cell loss.

关键词： metabolism glaucoma globally

Robots Tackle DARPA Underground Challenge

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Engineering 2022年第6期8卷 2-4页

作者： mitch Leslie Senior Technology Writer

In a narrow passageway beneath the city of Louisville, KY, USA, a meter-tall robot with a yellow, rectangular body and four limbs that resemble a dog’s legs carefully descended a rocky slope. But as the robot attempted to turn, it lost its footing and tumbled down the slope, landing on its side. A modified commercial model known as‘‘Spot,”the machine almost immediately began extending and rotating its legs, pushing against the floor of the passageway. In about 40 s, it stood upright again and resumed exploring the passage.

关键词： robot beneath DARPA