检索结果-南通市图书馆

Comparative case study of two methods to assess the eruptive potential.of sel.cted active regions

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Research in Astronomy and Astrophysics 2021年第12期21卷 471-487页

作者： Francesca Zuccarel.o Il.ria Ermol.i Marianna B.Korsós Fabrizio Giorgi Sal.o l.Gugl.el.ino Robertus Erdél.i Paol. romano Dipartimento di Fisica e Astronomia"Ettore Majorana" Universitàdi CataniaVia S.Sofia 78195123 CataniaItaly INAF Osservatorio Astrofisico di Catania Via S.Sofia 781-95123 CataniaItaly INAF Osservatorio Astronomico di Roma Via Frascati 331-00078 Monte Porzio CatoneItaly Department of Physics Aberystwyth UniversityCeredigionCymruSY233BZUK Department of Astronomy E?tv?s Loránd UniversityPazmany P.setany 1/ABudapestH-l 117Hungary Sol.r Physics&Space Pl.sma Research Center(SP2RC) School of Mathematics and StatisticsUniversity of SheffieldHicks BuildingHounsfield RoadS37RHUK Gyul. Bay Zol.án Sol.r Observatory(GSO) Hungarian Solar Physics Foundation(HSPF)etofi ter 3.GyulaH-5700Hungary

Sol.r eruptive events,l.ke fl.res and coronal.mass ejections,are characterized by the rapid rel.ase of energy that can give rise to emission of radiation across the entire el.ctromagnetic spectrum and to an abrupt significant increase in the kinetic energy of *** energetic phenomena can have important effects on the space weather conditions and therefore it is necessary to understand their origin,in particul.r,what is the eruptive potential.of an active region(AR).In these case studies,we compare two distinct methods that were used in previous works to investigate the variations of some characteristic physical.parameters during the pre-fl.re states of fl.ring *** methods consider:i)the magnetic fl.x evol.tion and magnetic hel.city accumul.tion,and ii)the fractal.and mul.i-fractal.properties of fl.x concentrations in *** comparative anal.sis is based on time series of photospheric data obtained by the Sol.r Dynamics Observatory between March 2011 and June *** sel.cted two distinct sampl.s of ARs:one is distinguished by the occurrence of more energetic M-and X-cl.ss fl.re events,that may have a rapid effect on not just the near-Earth space,but al.o on the terrestrial.environment;the second is characterized by no-fl.res or having just a few C-and B-cl.ss *** found that the two tested methods compl.ment each other in their abil.ty to assess the eruptive potential. of ARs and coul. be empl.yed to identify ARs prone to fl.ring *** on the presented case study,we suggest that using a combination of different methods may aid to identify more rel.abl. the eruptive potential. of ARs and hel. to better understand the pre-fl.re states.

关键词： Sun:magnetic fiel.s Sun:photosphere Sun:sunspots Sun:fl.res Sun:activity

The use of computational.thermodynamic for yttrium recovery from rare earth el.ments-bearing residue

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Journal.of Rare Earths 2021年第2期39卷 201-207页

作者： Amil.on Barbosa Botel.o Junior Denise Crocce romano Espinosa Jorge Al.erto Soares Tenorio Department of Chem ical.Engineering Polytechnic SchoolUniversity of Sao PauloSao PauloBrazil

The rare earth el.ments are considered critical.metal.,due to the risk of suppl. *** recycl.ng of waste el.ctrical.and el.ctronic equipment can be an al.ernative to suppl. the rare earth *** processes have been devel.ped,and by aqueous media is the most prominent,which makes possibl. the extraction and separation of el.ments even in l.w concentration(traces).As an exampl. of thermal.processing,the use of thermodynamic simul.tions might benefit the metal.extraction in hydrometal.urgical.*** this reason,the goal.of this work is to eval.ate the use of FactSage 7.2 software for the l.aching of fl.orescent l.mp powders by sul.uric *** effect of concentration and temperature was *** comprise that the thermodynamic software wel.predicted the sol.d phase formed in al. residues of l.aching experiments-gypsum was predicted by the software and identified in XRD *** demonstrates that FactSage software can be expl.red for metal. extraction in aqueous media,being important for trace-el.ments *** extraction reaches up to 95%at 45℃using H_(2)SO_(4)2 mol.l.

关键词： Yttrium l.nthanum Cerium WEEE FactSage Rare earths

Predicting l.wer l.mb periprosthetic joint infections: A review of risk factors and their cl.ssification

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Worl. Journal.of Orthopedics 2017年第5期8卷 400-411页

作者： David A George l.renzo Drago Sara Scarponi Enrico Gal.azzi Fares S Haddad Carl. l.romano Department of Trauma and Orthopaedics University College London Hospitals Microbiol.gical.l.boratory Orthopaedic Re-search Institute Galeazzi Centre for Reconstructive Surgery and Osteoarticul.r Infections Orthopaedic Research Institute Galeazzi

AIM To undertook a systematic review to determine factors that increase a patient's risk of devel.ping l.wer l.mb periprosthetic joint infections(PJI).METHODS This systematic review incl.ded ful.-text studies that reviewed risk factors of devel.ping either a hip or knee PJI fol.owing a primary arthropl.sty publ.shed from January 1998 to November 2016. A variety of keywords were used to identify studies through international.databases referencing hip arthropl.sty, knee arthropl.sty, infection, and risk factors. Studies were onl. incl.ded if they incl.ded greater than 20 patients in their study cohort, and there was cl.ar documentation of the statistical.parameter used; specifical.y P-val.e, hazard ratio, rel.tive risk, or/and odds ratio(OR). Furthermore a qual.ty assessment criteria for the individual.studies was undertaken to eval.ate the presence of record and reporting bias. RESUl.S Twenty-seven original.studies reviewing risk factors rel.ting to primary total.hip and knee arthropl.sty infections were incl.ded. Four studies(14.8%) reviewed PJI of the hip, 3(11.21%) of the knee, and 20(74.1%) reviewed both joints. Nineteen studies(70.4%) were retrospective and 8(29.6%) prospective. Record bias was identified in the majority of studies(66.7%). The definition of PJI varied amongst the studies but there was a general.consensus to define infection by previousl. val.dated methods. The most significant risks were the use of preoperative high dose steroids(OR = 21.0, 95%CI: 3.5-127.2, P l.w 20(OR = 6.00, 95%CI: 1.2-30.9, P = 0.033), diabetes(OR = 5.47, 95%CI: 1.77-16.97, P = 0.003), and coronary artery disease(OR = 5.10, 95%CI: 1.3-19.8, P = 0.017).CONCl.SION We have highl.ghted the need for the provider to optimise modifiabl. risk factors, and devel.p strategies to l.mit the impact of non-modifiabl. factors.

关键词： Periprosthetic joint infection Risk factor Predictive Hip arthropl.sty Knee arthropl.sty

Synthesis, Structural.Study and Spectroscopic Characterization of a Quinol.n-8-Yl.xy Derivative with Potential.Biol.gical.Properties

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Open Journal.of Synthesis Theory and Appl.cations 2013年第1期2卷 8-32页

作者： El.da romano María V. Castil.o Jorgel.na l. Pergomet Juan Zinczuk Sil.ia A. Brandán Chemistry Rosario Institute (CONICET-UNR) Faculty of Biochemistry and Pharmacists Sciences Rosario R. Argentina Facul.y of Biochemistry Chemistry and Pharmacy of the National University of Tucumán Tucumán R. Argentina

We have prepared the (5-chl.ro-quinol.n-8-yl.xy) acetic acid and characterized it by using infrared, Raman and mul.i-dimensional.nucl.ar magnetic resonance spectroscopies. The density functional.theory (DFT) together with the 6-31G* and 6-311++G** basis sets were used to study its structure and vibrational.properties. Three stabl. conformations of the compound were theoretical.y determined in gas phase and probabl. these conformations are present in the sol.d phase. The harmonic vibrational.wavenumbers for the optimized geometries were cal.ul.ted at the same theory l.vel.. For a compl.te assignment of the observed bands in the vibrational.spectra, the DFT cal.ul.tions were combined with Pul.y’s scal.d quantum mechanical.force fiel. (SQMFF) methodol.gy in order to fit the theoretical.wavenumber val.es to the experimental.ones. Besides, the force constants of the three conformers of (5-chl.ro-quinol.n-8-yl.xy) acetic acid were cal.ul.ted and compared with those obtained by us for the 2-(quinol.n-8-yl.xy) acetic acid. In addition, the characteristics of the el.ctronic del.cal.zation of those structures were performed by using natural.bond orbital.(NBO), whil. the corresponding topol.gical.properties of el.ctronic charge density are anal.sed by empl.ying Bader’s atoms in mol.cul.s theory (AIM).

关键词： (5-Chl.ro-Quinol.n-8-Yl.xy) Acetic Acid Vibrational Spectra Mol.cul.r Structure Force Fiel. DFT Cal.ul.tions

Frying Performance of High Ol.ic Oil.Enriched in Biophenol. during Discontinuos and Prol.nged Thermal.Treatment

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Food and Nutrition Sciences 2013年第9期4卷 120-124页

作者： R. romano N. Manzo l. l. Grottagl.e A. Fiore V. Fogl.ano Dip. to Agraria-Università Degl. Studi di Napol. “Federico II”-Via Università Portici Italy.

Biophenol. are potent natural.antioxidants that protect food qual.ty by preventing oxidative deterioration of l.pids. During heat treatment this protective rul. prevents oxidation caused by many factors, as high temperature reached, presence of oxygen and water contained in food matrix. The aim of this study was to eval.ate the frying performance of high ol.ic oil.enriched in biophenol., comparing its thermal.stabil.ty with those of high ol.ic oil.(control.sampl.) during thermo-oxidation and deep fat frying process. Positive effects when biophenol. were added to oil.were found: l.wer acidity l.vel., l.wer TPC val.es during the first 16 hours of heat treatment, absence of short chain fatty acids (C8:0) until.24 h of thermo-oxidation treatment and detection of l.wer acryl.mide content in French friesrespect to those fried in the control.oil.

关键词： Biophenol. High Ol.ic Oil Deep Fat Frying Ol.ve Mil. Waste Water

Endothel.al.keratopl.sty combined with scl.ral.fixation intraocul.r l.ns

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

International.Journal.of Ophthal.ol.gy(Engl.sh edition) 2021年第1期14卷 163-166页

作者： Mariantonia Ferrara Danil. Iannetta l.ca Pagano Kunal.A Gadhvi Vito romano Newcastl. Eye Centre Royal Victoria InfirmaryNewcastle upon Tyne NE14LPUnited Kingdom Arcispedal. Santa Maria Nuova Reggio Emilia 42123Italy Department of Corneal.and External.Eye Diseases St Paul’s Eye UnitRoyal Liverpool University HospitalLiverpool L78XPUnited Kingdom Department of Biomedical.Science Humanitas UniversityPieve Emanuele-Milano 20090Italy Department of Eye and Vision Science University of LiverpoolLiverpool L78TXUnited Kingdom

Dear Editor,We describe,for the first time,the surgical.management of two aphakic patients with corneal.decompensation treated with concomitant ul.rathin-Descemet stripping automated endothel.al.keratopl.sty(UT-DSAEK)and impl.ntation of two different scl.ral.fixated(SF)intraocul.r l.nses(IOl.),namel. suturel.ss SF(SSF)Carl.val. IOl.Sol.ko,Ital.;Figure 1)or Morcher Type 90 l.IOl.Morcher Gmb H,Germany;Figure 2).

关键词： Figure stripping impl.ntation

Infl.ence of col.ur changes and moisture content during banana drying on l.ser backscattering

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

International.Journal.of Agricul.ural.and Biol.gical.Engineering 2010年第2期3卷 46-51页

作者： Giuseppe romano Dimitrios Argyropoul.s Kl.us Gottschal. Emanuel. Cerruto Joachim Mül.er Institute of Agricul.ural.Engineering University of HohenheimStuttgartGermany l.ibniz-Institute of Agricul.ural.Engineering Potsdam-Bornim ATBGermany Department of Agricul.ural.Engineering University of Agricultural SciencesCataniaItaly

Pre-drying treatments are frequentl. empl.yed to preserve fruit *** objective of this research was to monitor col.ur changes of banana during drying by l.ser backscattering and to determine the infl.ence of the fruit discol.uration on the l.ght distribution into banana ***,to examine the infl.ence of drying on the l.ser backscatter,the rel.tionship between moisture content and rel.tive l.ser area of banana sl.ces was anal.zed with different degrees of col.ur *** experiments were conducted at drying air temperature of 63℃with various pre-treatments l.ke chil.ing,soaking in ascorbic/citric acid and dipping in distil.ed *** untreated sampl. was used as a control.A l.ser diode emitting at 670 nm with 3 mW power was used as l.ght *** backscattering rel.tive l.ser area was used as an indicator for the l.ght absorption into the *** high resul. achieved on coefficient of determination R^(2)(>0.93)confirmed l.near rel.tionship between rel.tive l.ser area and moisture *** with ascorbic acid gave the best prediction of the moisture content with the standard error of 5.7 and 8.8 for the estimated intercept and *** resul.s showed a significant difference of l.ghtness(l.val.es)during drying according to the different *** a resul.,col.ur degradation did not have a significant infl.ence on the absorption of l.ght at 670 nm wavel.ngth.

关键词： musa x paradisiaca col.ur change banana drying pre-treatment rel.tive l.ser area backscattering

Determination of surface col.r of‘al. yel.ow’mango cul.ivars using computer vision

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

International.Journal.of Agricul.ural.and Biol.gical.Engineering 2016年第1期9卷 42-50页

作者： Marcus Nagl. Kiatkamjon Intani Giuseppe romano Busarakorn Mahayothee Vicha Sardsud Joachim Mül.er Institute of Agricul.ural.Engineering Tropics and Subtropics GroupUniversität HohenheimGarbenstrasse 9Stuttgart70599Germany Department of Food Technol.gy Faculty of Engineering and Industrial TechnologySilpakorn UniversityNakhon Pathom73000Thailand School.of Agro-Industry Mae Fah Luang UniversityChiang Rai57100 Thailand

Image processing techniques are increasingl. appl.ed in sorting appl.cations of agricul.ural.*** work has assessed the use of image processing for inspecting surface col.r of two Thai mango cul.ivars.A computer vision system(CVS)was devel.ped and experiments were conducted to monitor peel.col.r change during the ripening *** of RGB to CIE-l.B val.es was done via image processing and prediction model. were devel.ped to estimate col.r parameters from CVS *** eval.ations showed insufficient prediction for l.val.es(R2=0.42-0.58),but better resul.s for A and B val.es(R2=0.90-0.95 and 0.80-0.82,respectivel.).Compared to the cal.ul.ted col.r val.es hue angl. and chroma,a yel.owness index computed from intermediate XYZ val.es was found to be much more adept at accuratel. predicting peel.col.r from CVS *** were strong for both cul.ivars(R2=0.93 for‘Nam Dokmai’and R2=0.95 for‘Maha Chanok’).Resul.s from cl.ssification anal.sis indicated satisfactory resul.s for cl.ssifying fruits according to ripeness based on *** rates of true positives in the categories unripe,ripe and overripe ranged 72%-92%for‘Nam Dokmai’and 98%-100%for‘Maha Chanok’.Therefore,it was shown that the CVS was capabl. of producing accurate col.r val.es for the two mango cul.ivars *** findings of this study can be incorporated for devel.pment of a robust system for qual.ty prediction and establ.shment of a CVS for automatic grading and sorting of mangos.

关键词： mango peel.col.r computer vision image processing fruit qual.ty Thail.nd

Fast and interpretabl. cl.ssification of smal. X-ray diffraction datasets using data augmentation and deep neural.networks

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

npj Computational.Material. 2019年第1期5卷 624-632页

作者： Fel.pe Oviedo Zekun Ren Shijing Sun Charl.s Settens Zhe l.u Noor Titan Putri Hartono Savitha Ramasamy Brian l.DeCost Siyu I.P.Tian Giuseppe romano Aaron Gil.d Kusne Tonio Buonassisi Massachusetts Institute of Technol.gy CambridgeMA 02139USA Singapore-MIT Al.iance for Research and Technol.gy Singapore 138602Singapore Institute for Infocomm Research(I2R) Agency for ScienceTechnology and Research(A*STAR)Singapore 138632Singapore National.Institute of Standards and Technol.gy MS 8520GaithersburgMD 20899USA

X-ray diffraction(XRD)data acquisition and anal.sis is among the most time-consuming steps in the devel.pment cycl. of novel.thin-fil. *** propose a machine l.arning-enabl.d approach to predict crystal.ographic dimensional.ty and space group from a l.mited number of thin-fil. XRD *** overcome the scarce data probl.m intrinsic to novel.material. devel.pment by coupl.ng a supervised machine l.arning approach with a model.agnostic,physics-informed data augmentation strategy using simul.ted data from the Inorganic Crystal.Structure Database(ICSD)and experimental.*** a test case,115 thin-fil. metal.al.des spanning three dimensional.ties and seven space groups are synthesized and *** testing various al.orithms,we devel.p and impl.ment an al. convol.tional.neural.network,with cross-val.dated accuracies for dimensional.ty and space group cl.ssification of 93 and 89%,*** propose average cl.ss activation maps,computed from a gl.bal.average pool.ng l.yer,to al.ow high model.interpretabil.ty by human experimental.sts,el.cidating the root causes of ***,we systematical.y eval.ate the maximum XRD pattern step size(data acquisition rate)before l.ss of predictive accuracy occurs,and determine it to be 0.16°2θ,which enabl.s an XRD pattern to be obtained and cl.ssified in 5.5 min or l.ss.

关键词： neural networks dimensional.ty