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multitask deep-learning-based design of chiral plasmonic metamaterials

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Photonics Research 2020年第7期8卷 1213-1225页

作者： eric Ashalley Kingsley Acheampong Lucas VBesteiro Peng Yu Arup Neogi Alexander OGovorov Zhiming m.Wang Institute of Fundamental and Frontier Sciences University of Electronic Science and Technology of ChinaChengdu 610054China School of Information and Software Engineering University of Electronic Science and Technology of ChinaChengdu 610054China CentreÉnergie matériaux et Télécommunications Institut National de la Recherche ScientifiqueVarennes QC J3X 1S2Canada Department of Physics University of North TexasDentonTexas 76203USA Department of Physics and Astronomy Ohio UniversityAthensOhio 45701USA

The field of chiral plasmonics has registered considerable progress with machine-learning(mL)-mediated metamaterial prototyping,drawing from the success of mL frameworks in other applications such as pattern and image ***,we present an end-to-end functional bidirectional deep-learning(DL)model for three-dimensional chiral metamaterial design and *** mL model utilizes multitask joint learning features to recognize,generalize,and explore in detail the nontrivial relationship between the metamaterials’geometry and their chiroptical response,eliminating the need for auxiliary networks or equivalent approaches to stabilize the physically relevant *** model efficiently realizes both forward and inverse retrieval tasks with great precision,offering a promising tool for iterative computational design tasks in complex physical ***,we explore the behavior of a sample mL-optimized structure in a practical application,assisting the sensing of biomolecular *** potential applications of our metastructure include photodetectors,polarization-resolved imaging,and circular dichroism(CD)spectroscopy,with our mL framework being applicable to a wider range of physical problems.

关键词： utilize offering eliminating

Plasma synthesis of various polymorphs of tungsten trioxide nanoparticles using gliding electric discharge in humid air:characterization and photocatalytic properties

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Plasma Science and Technology 2023年第12期25卷 72-82页

作者： Romaric L SEUTCHA Georges KAmGANG-YOUBI Elie ACAYANKA Valeria VERmILE François DEVRED eric m GAIGNEAUX Samuel LAmINSI Inorganic Chemistry Department Faculty of SciencesUniversity of Yaounde INgoa-Ekelle 812YaoundéCameroon Institute of Condensed matter and Nanosciences(ImCN) Molecular ChemistryMaterials and CatalysisUniversitéCatholique de LouvainPlace Louis Pasteur 11348 Louvain-la-NeuveBelgium

A gliding electric arc(glidarc)discharge generates a low-temperature plasma at atmospheric *** the discharge occurs in humid air as the feed gas,the chemistry of a glidarc plasma consists of in situ formation of HO°and NO°as the primary chemical *** trioxide(WO_(3))nanoparticles were successfully prepared by exposure of a liquid precursor to glidarc *** WO_(3)samples were calcined at three different temperatures(300℃,500℃and 800℃),resulting in different pure polymorphs:γ-WO_(3)(at 300℃),β-WO_(3)(at 500℃)andα-WO_(3)(at 800℃)according to x-ray diffraction *** identification of WO_(3)compounds was also confirmed by attenuated total reflection Fourier transform infrared spectroscopy *** in the calcination temperature of WO_(3)induced a decrease in its specific surface area according to Brunauer–Emmett–Teller nitrogen physisorption *** UV-visible results showed that the absorption bands of plasma-WO_(3)samples were more intense than those of WO_(3)samples obtained by a precipitation route,a classical method used for ***,this parameter can improve the photocatalytic properties of WO_(3)under visible *** photodegradation(in sunlight conditions)of gentian violet,chosen as a model pollutant,confirmed the photocatalytic properties of plasma-WO_(3)*** novel synthesis method has great potential to improve the efficiency of advanced tungsten trioxide-based functional material preparation,as well as in pollution-reducing and energy-saving tungsten extractive metallurgy.

关键词： plasma glidarc tungsten trioxide plasma-synthesis nanoparticles photocatalyst

Reaction of nitrous oxide with methane to synthesis gas:A thermodynamic and catalytic study

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Journal of Energy Chemistry 2017年第1期26卷 155-162页

作者： Naseer A.Khan eric m.Kennedy Bogdan Z.Dlugogorski Adesoji A.Adesina michael Stockenhuber Priority Research Centre for Energy(PRCfE) The University of NewcastleCallaghanNSW 2308Australia Department of Chemical Engineering UETPeshawarKPKPakistan School of Engineering and Information Technology Murdoch UniversityMurdochWA 6150Australia ATODATECH LLC BrentwoodCA 94513USA

The aim of the present study is to explore the coherence of thermodynamic equilibrium predictions with the actual catalytic reaction of CH4 with N2O,particularly at higher CH4 *** this purpose,key process variables,such as temperature(300℃-550℃) and a molar feed ratio(N2O/CH4 = 1,3,and 5),were altered to establish the conditions for maximized *** experimental study was conducted over the Co-ZSm-5 catalyst in a fixed bed tubular reactor and then compared with the thermodynamic equilibrium compositions,where the equilibrium composition was calculated via total Gibbs free energy minimization *** results suggest that molar feed ratio plays an important role in the overall reaction products *** for N2O conversions,and irrespective of N2O/CH4feed ratio,the thermodynamic predictions coincide with experimental data obtained at approximately 475℃-550℃,indicating that the reactions are kinetically limited at lower range of *** example,theoretical calculations show that the H2 yield is zero in presence of excess N2O(N2O/CH4= 5).However over a Co-ZSm-5 catalyst,and with a same molar feed ratio(N2O/CH4) of 5,the H2yield is initially 10%at 425℃,while above450℃ it drops to ***,H2yield steadily increases with temperature and with the level of CH4 conversion for reactions limited by N2O concentration in a reactant *** maximum attainable(from thermodynamic calculations and at a feed ratio of N2O/CH4=3) H2yield at 550℃ is 38%,whereas at same temperature and over Co-ZSm-5,the experimentally observed yield is about 19%.Carbon deposition on Co-ZSm-5 at lower temperatures and CH4 conversion(less than 50%) was also *** higher temperatures and levels of CH4conversion(above 90%),the deposited carbon is suggested to react with N2O to form CO2.

关键词： Gibbs free energy minimization N2O CH4 Synthesis gas

In situ mass spectrometry of autoimmune liver diseases

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Cellular & molecular Immunology 2011年第3期8卷 237-242页

作者： Christopher L Bowlus Erin H Seeley Joanna Roder Julia Grigorieva Heinrich Roder Richard m Caprioli m eric Gershwin Division of Gastroenterology and Hepatology University of CaliforniaDavisCAUSA mass Spectrometry Research Center Vanderbilt University School of MedicineNashvilleTNUSA Biodesix Steamboat SpringsCOUSA Division of Clinical Immunology Allergy and RheumatologyUniversity of CaliforniaDavisCAUSA

Primary biliary cirrhosis(PBC),primary sclerosing cholangitis(PSC)and autoimmune hepatitis(AIH)are the major forms of autoimmune liver diseases each characterized by the destruction of a specific liver cell type and the presence of differing *** took a proteomic approach utilizing in situ matrix-assisted laser desorption/ionization mass spectrometry(mALDI mS)to obtain profiles directly from liver samples of patients with PBC,PSC,AIH and *** ability to precisely localize the region for acquisition of mALDI mS allowed us to obtain profiles from bile ducts,inflammatory infiltrates and hepatocytes from each biopsy *** tools developed to identify peaks and compare peaks across diseases and cell types were used to develop models to classify the *** an initial set of testing samples from PBC patients and controls,we identified unique peaks present in bile ducts,inflammatory infiltrates and hepatocytes that could classify samples in a validation cohort with 88–91%***,profiles of PSC and AIH did not differ significantly from *** of proteins in these peaks may represent novel autoantigens or effector *** findings illustrate the potential of a proteomic approach to autoimmune diseases with in situ mALDI mS.

关键词： autoimmune hepatitis mass spectrometry primary biliary cirrhosis primary sclerosing cholangitis

Characterization of the interaction of nanobubble ultrasound contrast agents with human blood components

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生物活性材料(英文) 2023年第1期19卷 642-652页

作者： michaela B.Cooley eric C.Abenojar Dana Wegierak Anirban Sen Gupta michael C.Kolios Agata A.Exner Department of Biomedical Engineering Case Western Reserve UniversityClevelandOH44106United States Department of Radiology Case Western Reserve UniversityClevelandOH44106United States Department of Physics Ryerson UniversityTorontoOntarioM5B 2K3Canada Institute for Biomedical Engineering and Science Technology A Partnership Between Ryerson University and St.Michael’s HospitalTorontoOntarioM5B 1T8Canada

Nanoscale ultrasound contrast agents,or nanobubbles,are being explored in preclinical applications ranging from vascular and cardiac imaging to targeted drug delivery in *** sub-micron particles are approximately 10x smaller than clinically available *** allows them to effectively traverse compromised physiological barriers and circulate for extended periods of *** various aspects of nanobubble behavior have been previously examined,their behavior in human whole blood has not yet been ***,herein we examined,for the first time,the short and long-term effects of blood components on nanobubble acoustic *** observed differences in the kinetics of backscatter from nanobubble suspensions in whole blood compared to bubbles in phosphate buffered saline(PBS),plasma,or red blood cell solutions(RBCs).Specifically,after introducing nanobubbles to fresh human whole blood,signal enhancement,or the magnitude of nonlinear ultrasound signal,gradually increased by 22.8±13.1%throughout our experiment,with peak intensity reached within 145 *** contrast,nanobubbles in PBS had a stable signal with negligible change in intensity(􀀀1.7±3.2%)over 8 *** the same conditions,microbubbles made with the same lipid formulation showed a􀀀56.8±6.1%decrease in enhancement in whole *** confocal,fluorescent,and scanning electron microscopy analysis revealed attachment of the nanobubbles to the surface of RBCs,suggesting that direct interactions,or hitchhiking,of nanobubbles on RBCs in the presence of plasma may be a possible mechanism for the observed *** phenomenon could be key to extending nanobubble circulation time and has broad implications in drug delivery,where RBC interaction with nanoparticles could be exploited to improve delivery efficiency.

关键词： Nanobubbles Ultrasound contrast agents Red blood cells Hitchhiking Ultrasound Drug delivery

Novel trends in celiac disease

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Cellular & molecular Immunology 2011年第2期8卷 121-125页

作者： Torsten matthias Sandra Neidhofer Sascha Pfeiffer Kai Prager Sandra Reuter m eric Gershwin AESKU.KIPP Institute WendelsheimGermany AESKU.Diagnostics GmbH&Co.KG WendelsheimGermany Division of Rheumatology Allergyand Clinical ImmunologyUniversity of CaliforniaDavisCAUSA

Celiac disease(CD)is one of the most common food intolerances in developed *** affects genetically susceptible individuals and has severe consequences if it remains undiagnosed.A disease known for more than a century,it is still the focus for experts from various fields of research and ***,pathologists,immunologists,food engineers and dieticians share their knowledge and expertise to improve the conditions of CD *** new insights in the pathomechanism of gluten processing and antigen presentation in CD,it was possible to improve the diagnostic antigen mimicking the primary epitope in *** celiac neo-epitopes are comprised of a complex of gliadin peptides crosslinked with transglutaminase(tTg).They are an early diagnostic marker for CD which occurs up to 6 months earlier than classical markers known to miss a certain amount of CD patients.

关键词： celiac disease tissue transglutaminase celiac neo-epitope gluten diagnostic marker

Preliminary results on a near-real-time rock slope damage monitoring system based on relative velocity changes following the September 5,2022 m_(S) 6.8 Luding,China earthquake

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Earthquake Research Advances 2023年第1期3卷 31-36页

作者： Fan Xie Chen Liang Shigui Dai Bo Shao Huibao Huang Jinhui Ouyang Li Li eric Larose Institute of Science and Technology China Three Gorges CorporationBeijing 100089China Key Laboratory of Earthquake Source Physics China Earthquake AdministrationBeijing 100081China Dadu River Hydropower Development Co. Ltd.Chengdu 610016China Sichuan Earthquake Agency Chengdu 610044China ISTerre CNRSand University Grenoble AlpesGrenobleFrance

Relative seismic velocity change(dv/v)is important for monitoring changes in subsurface material properties and evaluating earthquake-induced rock slope damage in a geological disaster-prone *** this paper,we present a rapid damage assessment on three slow-moving rock slopes by measuring dv/v decrease caused by the 2022 m_(S) 6.8 Luding earthquake in Southwest *** applying the stretching method to the cross-correlated seismic wavefields between sensors installed on each slope,we obtain earthquake-induced dv/v decreases of~2.1%,~0.5%,and~0.2%on three slopes at distances ranging from~86 to~370 km to the epicenter,***,based on seismic data recorded by 16 sensors deployed on the rock slope at a distance of~370 km away from the epicenter,a localized dv/v decease region was observed at the crest of the slope by calculating the spatial dv/v images before and after the *** also derive an empirical in situ stress sensitivity of -7.29×10^(-8)/Pa by relating the dv/v change to the measured peak dynamic *** results indicate that a rapid dv/v assessment not only can help facilitate on-site emergency response to earthquakeinduced secondary geological disasters but also can provide a better understanding of the subsurface geological risks under diverse seismic loadings.

关键词： Relative velocity change Rock slope damage Luding earthquake Space-time evolution

Short-Term Stress Response of Juvenile Rainbow Trout Subjected to Two Different Rearing Densities

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Open Journal of Animal Sciences 2023年第1期13卷 126-136页

作者： Jaid Freestone Jill m. Voorhees Nathan Huysman eric Krebs michael E. Barnes South Dakota Game Fish and Parks McNenny State Fish Hatchery Spearfish USA

Juvenile rainbow trout Oncorhynchus mykiss were subjected to one of four treatments in a two-by-two experimental design: 1) fed at a density of 1.8 g/m3, 2) Fasted at 1.8 g/m3, 3) fed at 30.1 g/m3, and 4) fasted at 30.1 g/m3. Blood glucose and hematocrit were measured at 4, 6, 48, 168, and 336 hours after placement in one of the two rearing densities, with relative fin lengths and organosomatic indices recorded at 336 hours. Glucose levels over time were not significantly different among the density and feeding treatments. Hematocrit levels over time were also not significantly different. Total lengths, weight, hepatosomatic index, viscerosomatic index, and any of the relative fin lengths were not significantly different between the high and low densities. However, the hepatosomatic index was significantly greater in the fed fish compared to those fasted. The splenosomatic index was significantly greater in the higher density treatment. These results likely indicate no short-term stress response to the higher rearing density used in this short-term experiment and no interaction between starvation and density-related stressors.

关键词： Rainbow Trout Density Feeding Glucose Hematocrit

Green process of biomass waste derived fluorescent carbon quantum dots for biological imaging in vitro and in vivo

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Chinese Chemical Letters 2023年第6期34卷 282-286页

作者： Haitao Ren Yue Yuan Abdelkader Labidi Qibing Dong Ke Zhang eric Lichtfouse Ahmed A.Allam Jamaan S.Ajarem Chuanyi Wang School of Environmental Science and Engineering Shaanxi University of Science and TechnologyXi’an 710021China School of Basic medical Sciences Center for Tissue Engineering and Stem Cell ResearchGuizhou Province Key Laboratory of Regenerative MedicineGuizhou Medical UniversityGuiyang 550004China Aix-marseille Univ CNRSIRDINRAECEREGEAix en Provence 13100France Zoology Department Faculty of ScienceBeni-Suef UniversityBeni Suef 65211Egypt Zoology Department College of ScienceKing Saud UniversityRiyadh 11451Saudi Arabia

In the context of the circular economy,the huge amounts of biomass waste should be converted into value-added materials and energy to diminish pollution,atmospheric CO_(2)levels and costly waste *** imaging usually uses expensive and toxic chemicals e.g.,organic dyes,semiconductor quantum dots,calling for safer,greener,cheaper fluorescent probes for biological imaging in vitro and in *** these regards,carbon quantum dots(CQDs)-based fluorescent probes using biomass waste as a precursor may have much higher *** we transformed the biomass waste of peach leaves into value-added fluorescent CQDs through a low-cost and green one-step hydrothermal *** obtained CQDs show excitation-dependent photoluminescence properties with a fluorescence lifetime of 5.96 ns and a quantum yield of 7.71%without any *** addition,the CQDs have a fine size of 1.9 nm with good hydrophilicity and high fluorescent stability over pH 4.0-11.0 *** imaging of in vitro cell cultures and in vivo with zebrafish show that CQDs possess ultra-low toxicity and remarkable performance for biological *** when CQDs present at a concentration as high as500μg/m L,the organism can still maintain more than 90%activity both in vitro and in vivo,and present bright *** cheaper,greener,ultra-low toxicity CQDs developed in this work is a potential candidate for biological imaging in vitro and in vivo.

关键词： Carbon quantum dots Biomass waste Biological imaging Bioresource conversion Green extraction