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Imaging and endoscopic tools in pediatric inflammatory bowel disease: What’s new?

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World Journal of Clinical Pediatrics 2024年第1期13卷 7-13页

作者： Alexandra S hudson Ghassan T Wahbeh Hengqi Betty Zheng Department of Pediatrics University of WashingtonSeattleWA 98109United States

Pediatric inflammatory bowel disease(IBD)is a chronic inflammatory disorder,with increasing incidence and prevalence *** have been recent advances in imaging and endoscopic technology for disease diagnosis,treatment,and *** ultrasound,including transabdominal,transperineal,and endoscopic,has been emerging for the assessment of transmural bowel inflammation and disease complications(e.g.,fistula,abscess).Aside from surgery,IBD-related intestinal strictures now have endoscopic treatment options including through-the-scope balloon dilatation,injection,and needle knife stricturotomy and new evaluation tools such as endoscopic functional lumen imaging *** transnasal endoscopy may have a role in patients with upper gastrointestinal Crohn’s disease or those with IBD with new upper gastrointestinal *** to dysplasia screening in pediatric patients with longstanding colonic disease or primary sclerosing cholangitis hold promise with the addition of virtual chromoendoscopy and ongoing research in the field of artificial intelligence-assisted endoscopic *** intelligence and machine learning is a rapidly evolving field,with goals of further personalizing IBD diagnosis and treatment selection as well as *** review summarized these advancements,focusing on pediatric patients with IBD.

关键词： Intestinal ultrasound endoscopy Inflammatory bowel disease Pediatrics Imaging

Boosting energy-storage capability in carbon-based supercapacitors using low-temperature water-in-salt electrolytes

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Journal of energy Chemistry 2022年第7期31卷 521-530,I0013页

作者： Joao Pedro A.Santos Manuel J.Pinzón érick A.Santos Rafael Vicentini Cesar J.B.Pagan leonardo M.Da Silva hudson Zanin Brazilian Renewable energies Center for Innovation on New EnergiesSchool of Electrical and Computer EngineeringUniversity of CampinasSao Paulo 13083-852Brazil Department of Semiconductors Instruments and PhotonicsSchool of Electrical and Computer EngineeringUniversity of CampinasSao Paulo 13083-852Brazil laboratory of Fundamental and Applied electrochemistry Department of ChemistryFederal University of Jequitinhonha e Mucuri’s ValleyMinas Gerais 39100-000Brazil

Supercapacitors(SCs) are high-power energy storage devices with ultra-fast charge/discharge *** using concentrated aqueous-based electrolytes can work at low temperatures due to their intrinsic properties, such as higher freezing point depression(FPD) and robustness. Besides the traditional organic-and aqueous-based(salt-in-water) electrolytes used in SCs, water-in-salt(WISe) sodium perchlorate electrolytes offer high FPD, non-flammability, and low-toxicity conditions, allowing the fabrication of safer, environmentally friendly, and more robust devices. For the first time, this work reports a comprehensive study regarding WISe system’s charge-storage capabilities and physicochemical properties under low-temperature conditions(T ng mesoporous carbon-based electrodes. The effect of temperature reduction on the electrolyte viscosity and electrical properties was investigated using different techniques and the in-situ(or operando) Raman spectroscopy under dynamic polarization *** cell voltage, equivalent series resistance, and specific capacitance were investigated as a function of the temperature. The cell voltage(U) increased ~ 50%, while the specific capacitance decreased ~20%when the temperature was reduced from 25 ℃ to -10 ℃. As a result, the maximum specific energy(e = CU^(2)/2) increased ~ 100%. Therefore, low-temperature WISes are promising candidates to improve the energy-storage characteristics in SCs.

关键词： Carbon supercapacitors Water-in-salt electrolytes low-temperature charge-storage Specific energy improvement at low temperatures

Multi-objective forest harvesting under sustainable and economic principles

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林业研究:英文版 2023年第5期34卷 1379-1394页

作者： Talles hudson Souza lacerda luciano Cavalcante de Jesus Franca Isáira leite e lopes Sammilly lorrayne Souza lacerda evandro OrfanóFigueiredo Bruno Henrique Groenner Barbosa Carolina Souza Jarochinski e Silva lucas Rezende Gomide Suzano SA Sao JoséDos CamposSao PauloBrazil Institute of Agricultural Sciences Federal University of Uberlandia–UFUMonte CarmeloMinas GeraisBrazil Department of Forest Sciences Federal University of Lavras–UFLALavrasMinas GeraisBrazil Brazilian Agricultural Research Corporation–eMBRAPA Rio BrancoAcreBrazil Department of Systems and Automation Federal University of Lavras–UFLALavrasMinas GeraisBrazil

Selective logging is well-recognized as an effective practice in sustainable forest ***,the ecological efficiency or resilience of the residual stand is often in *** time depends on operational variables,diversity,and forest *** logging is excellent but is open to *** may be resolved by mathematical programming and this study integrates the economic-ecological aspects in multi-objective function by applying two evolutionary *** function maximizes remaining stand diversity,merchantable logs,and the inverse of distance between trees for harvesting and log landings *** Brazilian rainforest database(566 trees)was used to simulate our 216-ha *** log landing design has a maximum volume limit of 500 *** nondominated sorting genetic algorithm was applied to solve the main optimization *** parallel,a sub-problem(p-facility allocation)was solved for landing allocation by a genetic *** frontier analysis was applied to distinguish the gradientsα-economic,β-ecological,andγ-*** expected,the solutions have high diameter changes in the residual stand(average removal of approximately 16 m^(3) ha^(-1)).All solutions showed a grouping of trees selected for harvesting,although there was no formation of large clearings(percentage of canopy removaln average of 2.5 ind ha^(-1)).There were no differences in floristic composition by preferentially selecting species with greater frequency in the initial stand for *** implies a lower impact on the demographic rates of the remaining *** methodology should support projects of reduced impact logging by using spatial-diversity information to guide better practices in tropical forests.

关键词： Amazon rainforest management Computational intelligence Multi-objective functions evolutionary computing

exploiting AMl algorithm for multiple acoustic source 2D and 3D DOA estimations

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控制理论与应用（英文版） 2011年第1期9卷 34-43页

作者： Juo-Yu lee Ralph e. hudson Kung YAO electrical engineering Department University of CaliforniaLos AngelesCalifornia 90095-1594U.S.A.

The approximate maximum likelihood (AMl) algorithm shows promises for joint estimations of acoustic source spectrum and direction-of-arrival (DOA). For the multisource case, the AMl algorithm remains feasible as one considers an alternating projection procedure based on sequential iterative search on single source parameters. In order to perform multisource beamforming operations, earlier, we used a two-dimensional (2D) sensor array with 2D AMl to obtain the DOA estimations for sources in the far field of the array. now, the 3D AMl algorithm enables a 3D sensor array to collect acoustic data for estimation of DOA represented in azimuth and elevation angles. In this paper, we consider two acoustic sources being simultaneously active and derive Crame′r-Rao bound (CRB) on DOA estimation given by a 3D array. Also, we compare the two-source DOA estimation results of 2D AMl and 3D AMl, respectively. To construct reasonable constraints on sensor topology, we adopt the concept of isotropic array and decouple the interplay between azimuth and elevation angle variations. The 3D AMl algorithm exhibits superior spatial separation over its 2D counterpart for multiple sources located at different azimuth and elevation angles. Although the 3D AMl algorithm requires more demanding computational complexity, we have developed a number of efficiency enhancements to reduce the loading for the grid search.

关键词： Approximate maximum likelihood Direction-of-arrival Alternating projection procedure

Analysis, Implementation, and Application of Acoustic and Seismic Arrays

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自动化学报 2006年第6期32卷 929-937页

作者： STAFSUDD J Z ASGARI S AlI A M CHen C e.hudson R e lORenZellI F YAO K TACIROGlU e electrical engineering Department Los Angeles CA 90095 USA Civil and environmental engineering Department Los Angeles CA 90095 USA

In this paper, we consider the analysis, implementation, and application of wideband sources using both seismic and acoustic sensors. We use the approximate maximum likelihood (AMl) algorithm to perform acoustic direction of arrival (DOA). For non-uniform noise spectra, whitening filtering was applied to the received acoustic signals before the AMl operation. For short-range seismic DOA applications, one method was based on eigen-decomposition of the covariance matrix and a second method was based on surface wave analysis. Two well-known optimization schemes were used to estimate the source locations from the estimated DOAs at sensors of known locations. experimental estimation of the DOAs and resulting localizations using the acoustic and seismic signals generated by striking a heavy metal plate by a hammer were reported.

关键词： Acoustic array seismic array beamforming DOA localization

Direct observation of the CO_(2) formation and C–H consumption of carbon electrode in an aqueous neutral electrolyte supercapacitor by in-situ FTIR and Raman

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Journal of energy Chemistry 2022年第8期31卷 488-496,I0013页

作者： Murilo M.Amaral Victor Y.Yukuhiro Rafael Vicentini Alfredo C.Peterlevitz leonardo M.Da Silva Pablo Fernandez hudson Zanin Advanced energy Storage Division State University of Campinas13083-852Av.Albert Einsten 400CampinasSPBrazil Chemistry Institute State University of Campinas13083-970Josue de Castro StreetCampinasSPBrazil Department of Chemistry Laboratory of Fundamental and Applied ElectrochemistryFederal University of Jequitinhonha and Mucuri’s ValleyRodovia MGT 367km 5835000Alto da Jacuba39100-000DiamantinaMGBrazil Center for Innovation on new energies University of Campinas13083-841 CampinasSão PauloBrazil

electrical double-layer capacitors(eDlCs)consist of energy storage devices that present high-power and moderate energy *** electrolyte and electrode physicochemical properties are crucial for improving their overall energy storage ***,the stability of the eDlCs’materials is the primary focus of this *** energy storage depends on the specific capacitance,and also on the square of the maximum capacitive cell voltage(UMCV).Thus,electrodes with high specific surface area(SSA)and electrolytes with excellent electrochemical stability are commonly reported in the *** electrolytes are safer and green devices compared to other organic-based *** the other hand,their UMCVis reduced compared to other electrolytes(e.g.,organic-based and ionic liquids).In this sense,spanning the UMCVfor aqueous-based electrolytes is a’hot topic’***,the lack of protocols to establish reliable UMCVvalues has culminated in the publishing of several conflicting ***,we confirm that multiwalled carbon nanotubes(MWCnTs)housed in cells degrade and produce CO_(2) under abusive polarisation *** is probed by employing electrochemical techniques,in-situ FTIR and in-situ Raman *** these considerations,the current study uses spectro-electrochemical techniques to support the correct determination of the electrode and electrolyte stability conditions as a function of the operating electrochemical parameters.

关键词： electrode and electrolyte stabilities In-situ FTIR CO_(2)formation Carbon degradation Supercapacitor Aqueous electrolytes Carbon nanotubes

Trace elements migrating from tailings to rock varnish laminated sediments in an old mining region from nelson,nevada,USA

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International Journal of Sediment Research 2022年第2期37卷 202-213页

作者： Douglas B.Sims Amanda C.hudson John e.Keller Michael Strange Andressa Cristhy Buch David Ferrari Giavanna M.Fernandez Juan Garcia-Hernandez Bailey D.Kesl Sean Torres Department of Physical Sciences College of Southern Nevada University of nevada Fluminense Federal University

The dispersion and influence of soluble and particulate trace elements(Tes) present in the materials from abandoned mines is an imminent problem on terrestrial and aquatic *** goal of this research is to provide a broader view of such transport,assessing particle size distribution and Te interactions(e.g.,scavenging) with mine tailings and locally derived sediments transported by water in arid *** grains from wash sediment were collected from a dry ephemeral wash in nelson,nevada where the Techatticup Mine and Mill worked between 1850 and *** were evaluated to determine the association and behavior of certain metals and metalloids including aluminum,arsenic,barium,cadmium,copper,chromium,iron,manganese,lead,selenium,vanadium,and zinc to rock varnish laminated *** show that some metals and metalloids were more concentrated on larger particles whereas others indicated the opposite *** example,As was greatest on silt fractions and least on coarse fractions,while Se was detected only on ***,Cu,Fe,Mn,Pb,and Zn concentrations all increased with decreasing particle size(silt> sand> coarse),whereas Al,Ba,and V showed the opposite trend(silt nd e).The enrichment factor(eF) of Cu,Zn,Pb,As,and Se were lower in mine tailing sediment treated with wash than those obtained for source *** in treated wash sediment samples,the high eFs of Ba,Cr,V,and Mn suggested a possible greater affinity of these metals to the Al,Fe,and Mn oxides from the RV *** data found in this study show that transport of contaminated sediments in arid regions could lead to the enrichment of some Tes in downgradient areas from source materials.

关键词： Adsorption Metals Metalloids Mine tailings Particle size Transport

Synthesis, Mechanism of Formation and Insecticidal Activity of novel Fluorinated Organophosphorus Compounds

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Chinese Journal of Chemistry 2002年第12期20卷 1598-1601,1464页

作者：吴军 hudson Harry R. Department of Chemistry Zhejiang University Hangzhou Zhejiang 310027 China Division of Chemistry School of Biological and Applied Sciences University of North London London N7 8DB UK

The major products of the interaction between triethyl phosphite and 3-fluoropropanoyl chloride at room temperature are diethyl (e)-1-(3-fluoropropanoyloxy)-3-fluoroprop-1-enylphosphonate (3) and diethyl l-(diethoxyphosphoryl)-3-fluoropropyl phosphate (4). The compounds 3 and 4 were separated by chromatography, and structurally characterized by elemental analysis, nMR spectroscopy (1H, 13C, 19F and 31P) and mass spectrometry. Possible reaction mechanisms are proposed. The major products 3 and 4 were tested for insecticidal activity. 3 gave 100% control of Musca domestica l. and Phaedon cochledriae Fab. at a dose of 20 μg/per insect.

关键词： synthesis reaction mechanism insecticidal activity fluorinated organophosphonate

Best practices for electrochemical characterization of supercapacitors

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Journal of energy Chemistry 2023年第5期80卷 265-283,I0007页

作者： João Pedro Aguiar dos Santos Fernando Cesar Rufino Joǎo IYutaka Ota Rodolfo CFernandes Rafael Vicentini Cesar JBPagan leonardo Morais Da Silva hudson Zanin Brazilian Renewable energies Center for Innovation on New EnergiesSchool of Electrical and Computer EngineeringUniversity of CampinasSP 13083-852Brazil School of electrical and Computer engineering University of CampinasSP 13083-852Brazil Department of Chemistry Laboratory of Fundamental and Applied ElectrochemistryFederal University of Jequitinhonha e Mucuri's ValleyRodovia MGT 367km 5835000Alto da Jacuba39100-000 DiamantinaMGBrazil

We discuss here essential aspects of the experimental supercapacitors characterization by a series of well-known electrochemical *** are motivated by a considerable number of publications that misreport procedures and *** often conceal or neglect essential information about the electrochemical analytical apparatus used and its *** lack of such information may lead researchers,especially inexperienced ones,to misunderstand the procedures and ***,the misled electrochemical equipment configuration favors misinterpretation of data and low reproducibility *** paper aims to highlight these issues and clarify *** explain fundamental concepts of some electrochemical analytical methods,such as cyclic voltammetry,galvanostatic charge-discharge,single potential step chronoamperometry,and electrochemical impedance spectroscopy,focusing on the supercapacitor *** configurations of electrical parameters are presented and discussed to highlight the effects of incorrect setup and uncover misleading *** discuss how the electrochemical setup and data analyses matter in reliable data results for the supercapacitor.

关键词： Supercapacitor electrochemical instrumentation electrochemical methods electrochemistry