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Solid-liquid extraction for yttrium recovery using porous polymeric resin(XAD-7) functionalized with D_(2)EHPA

Journal of Rare Earths 2024年第9期42卷 1764-1773,I0005页

作者： P.A.martínez-montoya R.G.Sanchez-Alvarado D.Y.medina-Velazquez m.l.carrera-jota P.Garnica-Chávez A.de J.morales-Ramirez Higher School of Chemical Engineering and Extractive Industries ESIQIEIPNDepartment of Metallurgical EngineeringUPALM S/NCol.LindavistaGustavo A.Madero Cd.de MéxicoC.P07738Mexico metropolitan Autonomous University Department of MaterialsBasic Sciences and EngineeringAv.San Pablo No.180Col.Reynosa TamaulipasCd.de MéxicoC.P02200Mexico Center for Research and Technological Innovation CIITECIPNCda.de CECATIs/nSanta CatarinaAzcapotzalcoC.P02250CDMXMexico

The recovery of yttrium is proposed by applying a solid-liquid extraction process using di-2-ethyl hexylphosphoric acid(D2EHPA) as extracting *** extracting agents were supported on a macro porous polymeric resin XAD-7(solid phase).Yttrium ions extraction and discharge tests were performed,firstly from a synthetic aqueous solution of 100 mg/l Y(liquid phase) at 25℃ with *** effects of pH of aqueous solutions bearing yttrium,volume fraction of extracting agents and the solid/liquid(S/l)ratio on the yttrium recovery were *** most favorable conditions for yttrium ions extraction are;20 vol% D_(2)EHPA functionalized resin,pH=1.5 and an S/l ratio of 10 mg/ml The discharge of yttrium ions was done under the same conditions of extraction stage,using a 2 mol/l [H_(2)SO_(4)] as stripping *** to 80% yttrium is extracted,while 75% yttrium is recovered in the striping *** all experiments,the reaction equilibrium is reached after 20 min,and the kinetics for the extraction stage was determined as a second-order ***,experiments were carried out to discharge the yttriumloaded resins,and it has been determined that the best pH value to strip the Y ions is *** tests of extraction and discharge for yttrium ions show that the functionalized resin can work at least five cycles without decreasing its ***,the proposed process was tested in a real solution with Y ions fro m a waste fluorescent la mp powder leached in H_(2)SO_(4),demonstrating the ability to effectively recover yttrium,separating it from various metals from the studied residue.

关键词： Yttrium recovery Rare earth solid-liquid extraction XAD-7 resin Fluorescent lamps recycling Solid-liquid kinetics extraction

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Wilson's disease in two siblings from Ecuador:Two case reports

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World Journal of Clinical Cases 2025年第3期13卷 50-60页

作者： Enrique carrera Jonathan Alvarado martina Astudillo Galo Pillajo Department of Gastroenterology and Hepatology Hospital de Especialidades Eugenio EspejoQuito 170136PichinchaEcuador Faculty of medicine Pontificia Universidad Catolica del EcuadorQuito 170143PichinchaEcuador Department of Radiology Hospital de Especialidades Eugenio EspejoQuito 170136PichinchaEcuador

BACKGROUND Wilson's disease(WD)is a rare metabolic disorder of copper accumulation in organs such as liver,brain,and *** and treatments are challenging in settings,where advanced diagnostic tests are unavailable,copper chelating agents are frequently scarce,healthcare professionals lack disease awareness,and medical follow-ups are *** diagnoses and treatments help prevent complications,improve patients’quality of life,and ensure a normal life *** clinical presentations and outcomes of WD can vary within a single *** SUmmARY We present the cases of two siblings(19 and 27 years)from a consanguineous family in rural Ecuador,diagnosed as having WD during a family *** male patient,diagnosed at age 19 after his brother’s death from acute liver failure,presented with compensated cirrhosis,neurological symptoms,and bilateral Kayser-Fleischer *** developed progressive neurological deterioration during an irregular treatment with D-penicillamine due to medication *** condition improved upon switching to trientine tetrahydrochloride,and his neurological symptoms improved over an 8-year period of *** female patient,diagnosed at age 10,exhibited only biochemical *** treatment history was similar;however,she remained asymptomatic without disease progression over the same follow-up *** discuss the potential influence of epigenetic mechanisms and modifier genes on the various phenotypes,emphasizing the need for research in these areas to optimize therapeutic *** Our patients’medical histories show how early diagnosis and treatment can prevent disease progression;and,how suboptimal treatments impact disease outcomes.

关键词： Wilson disease Kayser-Fleischer rings Copper chelator D-penicillamine Trientine tetrahydrochloride Case report

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Emerging role of A-kinase anchoring protein 5 signaling in reward circuit function

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Neural Regeneration Research 2025年第10期20卷 2913-2914页

作者： William J.Flerlage mark l.Dell’Acqua Brian m.Cox Fereshteh S.Nugent Uniformed Services University of the Health Sciences Department of Pharmacology and Molecular TherapeuticsBethesdaMDUSA Department of Pharmacology University of Colorado School of MedicineAnschutz Medical CampusAuroraCOUSA

There is a strong evidence supporting the hypothesis of synaptic dysfunction as a major contributor to neural circuit and network disruption underlying emotional and mood dysregulation in psychiatric disorders(Simmons et al.,2024).Diverse sets of distinct molecular signaling pathways converge on the synapse to regulate synaptogenesis,synaptic function,and synaptic plasticity in brain regions and circuits through complex interactions organized by numerous multivalent protein scaffolds,including the family of proteins known as A-kinase anchoring proteins(AKAPs).

关键词： function supporting

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Analysis of the most likely Regions of Stability of an NCS and Design of the Corresponding Event-driven Controller

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International Journal of Automation and computing 2018年第1期15卷 39-51页

作者： Ana Paula Batista Fabio Goncalves jota Centre for Intelligent Energy Research Federal Centre of Technological Education of Minas Gerais Belo Horizonte Brazil Graduate Program in Electrical Engineering Federal University of Minas Gerais Belo Horizonte Brazil

In this paper, some issues related to design and analysis of real networked control systems （NCS） under the focus of the most likely region of stability are addressed. Such a system is cumbersome due to its inherent variable time delays, ranging from microseconds to hours. To show the influence of such huge variations in the control performance, a laboratory-scale luminosity system has been setup using the Internet as part of the control loop with dominant time constant in the order of milliseconds. Proportional and integral （PI） control strategies with and without explicit compensation for the time-delay variations were implemented using an event-driven controller. Using the well-known monte Carlo method and subsequent analyses of time responses, it has been possible to identify the most likely region of stability. Some experimental results show the influence of the statistical parameters of the delays on the determination of the most likely regions of stability of the NCS and how these can be used in assessment and redesign of the control system. The experiments show that much larger delays than one sample period can be supported by real NCSs without becoming unstable.

关键词： Networked control systems real NCS delay compensation most likely regions of stability delay statistics.

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Transgressing local Planning Cultures,the SPURS Program,and the International Studios

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China City Planning Review 2018年第3期27卷 35-39页

作者： jota Samper University of Colorado Boulder

Today, we are living in a more interconnected world, as globalization has already reached most urban confines of the planet. However, as this phenomenon becomes ubiquitous, understanding how local planning cultures interact with the effects of such globalization has become a hurdle for the discipline of planning and for the educational institutions attempting to prepare planners for today's multicultural planning environment. Here I present my reflection on the Special Program for Urban and Regional Studies(hereinafter referred to as SPURS) and the accompanying mITDUSP abroad planning courses. I offer these experiences as windows into the complexity of teaching multicultural audiences and preparing planners to perform in a varied set of contexts. In this 21^(st) century multicultural world, we need to create a new globalized planner, not one raised on the belief of a globally homogenized culture but one always aware of the cultural and professional differences and open to learning from them.

关键词： planning education abroad studios globalization planning cultures international education

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multi-layered plate finite element models with node-dependent kinematics for smart structures with piezoelectric components

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Chinese Journal of Aeronautics 2021年第8期34卷 164-175页

作者： Guohong lI Erasmo carrera Yuliang HOU Gennady m.KUlIKOV mUl2 Group Department of Mechanical and Aerospace EngineeringPolitecnico di TorinoTorino 10129Italy laboratory of Intelligent materials and Structures Tambov State Technical UniversityTambov 392000Russia School of mechanical and Power Engineering Zhengzhou UniversityZhangzhou 450001China

This article presents a type of plate Finite Element(FE)models with adaptive mathematical refinement capabilities for modeling laminated smart structures with piezoelectric layers or distributed *** p-version shape functions are used in combination with the higher-order layer-Wise(lW)kinematics adopting hierarchical legendre ***-Dependent Kinematics(NDK)is employed to implement local lW models in the regions with piezoelectric components and simulate the global substrate structure with the Equivalent Single-layer(ESl)*** the proposed NDK FE models,the electro-mechanical behavior of smart structures can be predicted with high fidelity and numerical efficiency,and various patch configurations can be conveniently modeled through one set of mesh ***,the effectiveness and efficiency of the NDK FE approach are assessed through numerical examples and its application is demonstrated.

关键词： Finite element laminated composites Piezoelectric Refined plate theory Smart structures

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Hierarchical models for failure analysis of plates bent by distributed and localized transverse loadings

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2008年第5期9卷 600-613页

作者： Erasmo carrera Gaetano GIUNTA Aeronautic and Space Engineering Department Politecnico di Torino Torino Italy

The failure analysis of simply supported, isotropic, square plates is addressed. Attention focuses on minimum failure load amplitudes and failure locations, von mises＇ equivalent stress along the plate thickness is also addressed. Several distributed and localized loading conditions are considered. loads act on the top of the plate. Bi-sinusoidal and uniform loads are taken into account for distributed loadings, while stepwise constant centric and off-centric loadings are addressed in the case of localized loadings. Analysis is performed considering plates whose length-to-thickness ratio a/h can be as high as 100 （thin plates） and as low as 2 （very thick plates）. Results are obtained via several 2D plate models. Classical theories （CTs） and higher order models are applied. Those theories are based on polynomial approximation of the displacement field. Among the higher order theories （HOTs） HOTsa models account for the transverse shear deformations, while HOTs models account for both transverse shear and transverse normal deformations. lHOTs represent a local application of the higher order theories. A layerwise approach is thus assumed： by means of mathematical interfaces, the plate is considered to be made of several fictitious layers. The exact 3D solution is presented in order to determine the accuracy of the results obtained via the 2D models. In this way a hierarchy among the 2D theories is established. CTs provide highly accurate results for a/h greater than 10 in the case of distributed loadings and greater than 20 for localized loadings. Results obtained via HOTs are highly accurate in the case of very thick plates for bi-sinusoidal and centric loadings. In the case of uniform and off-centric loadings a high gradient is present in the neighborhood of the plate top. In those cases, lHOTs yield results that match the exact solution.

关键词： Failure load von mises' equivalent stress lsotropic plates Higher order theories (HOTs) Exact 3D solution

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multiple sclerosis is at a checkpoint: advancing the program

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Neural Regeneration Research 2025年第3期20卷 811-812页

作者： Brandon C.Smith Jessica l.Williams Department of Neurosciences Lerner Research InstituteCleveland ClinicClevelandOHUSA Department of Biological Geologicaland Environmental SciencesCleveland State UniversityClevelandOHUSA

multiple sclerosis(mS) is a chronic inflammatory and demyelinating disease of the central nervous system(CNS). Patients with mS experience sensory and motor function loss due to myelin and/or axon damage perpetuated b... 详细信息

关键词： Hauser sclerosis damage

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Generation of brain vascular heterogeneity:recent advances from the perspective of angiogenesis

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Neural Regeneration Research 2025年第7期20卷 2013-2014页

作者： Nathanael J.lee Ryota l.matsuoka Department of Neurosciences Lerner Research InstituteCleveland ClinicClevelandOHUSA Department of molecular medicine Cleveland Clinic Lerner College of MedicineCase Western Reserve UniversityClevelandOHUSA

Heterogeneous proper t i es of vascular endothelial cells in the brain:The brain displays large energy dynamics and consumption,and this high level of metabolic demands is fulfilled by a continuous supply of glucose and oxygen through its vascular *** vasculature consists of highly divergent blood vessel branches,giving rise to a dense network of capillaries that supply blood to all cells across the *** elaborated vascular network is thought to develop via angiogenesis,a process in which new blood vessels grow from pre-existing *** capillaries exhibit organotypic features distinct from other tissues and are formed primarily by two major endothelial cell(EC)types:those that form the semi-permeable blood-brain barrier(BBB)and those that develop highly permeable pores known as fenestrae(matsuoka et al.,2022).The structural and functional differences between BBB and fenestrated vascular ECs represent a fundamental feature of brain vasculature and form the foundation for both brain function and homeostasis.

关键词： angiogenesis homeostasis network

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Neurogenesis dynamics in the olfactory bulb:deciphering circuitry organization, function, and adaptive plasticity

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Neural Regeneration Research 2025年第6期20卷 1565-1581页

作者： moawiah m.Naffaa Department of Psychology and Neuroscience Duke UniversityDurhamNCUSA Department of Cell Biology Duke University School of MedicineDurhamNCUSA

Adult neurogenesis persists after birth in the subventricular zone, with new neurons migrating to the granule cell layer and glomerular layers of the olfactory bulb, where they integrate into existing circuitry as inhibitory interneurons. The generation of these new neurons in the olfactory bulb supports both structural and functional plasticity, aiding in circuit remodeling triggered by memory and learning processes. However, the presence of these neurons, coupled with the cellular diversity within the olfactory bulb, presents an ongoing challenge in understanding its network organization and function. moreover,the continuous integration of new neurons in the olfactory bulb plays a pivotal role in regulating olfactory information processing. This adaptive process responds to changes in epithelial composition and contributes to the formation of olfactory memories by modulating cellular connectivity within the olfactory bulb and interacting intricately with higher-order brain regions. The role of adult neurogenesis in olfactory bulb functions remains a topic of debate. Nevertheless, the functionality of the olfactory bulb is intricately linked to the organization of granule cells around mitral and tufted cells. This organizational pattern significantly impacts output, network behavior, and synaptic plasticity, which are crucial for olfactory perception and memory. Additionally, this organization is further shaped by axon terminals originating from cortical and subcortical regions. Despite the crucial role of olfactory bulb in brain functions and behaviors related to olfaction, these complex and highly interconnected processes have not been comprehensively studied as a whole. Therefore, this manuscript aims to discuss our current understanding and explore how neural plasticity and olfactory neurogenesis contribute to enhancing the adaptability of the olfactory system. These mechanisms are thought to support olfactory learning and memory, potentially through increased

关键词： network adaptability neurogenesis neuronal communication olfactory bulb olfactory learning olfactory memory synaptic plasticity

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