检索结果-南通市图书馆

维普期刊数据库博看期刊

Study of ZnO nanoparticle-supported clay minerals for electrochemical sensors,photocatalysis,and antioxidant applications

在线全文

学校读者我要写书评

暂无评论

ChemPhysMater 2024年第1期3卷 83-93页

作者： Mylarappa M n.Raghavendra n.R.Bhumika C.H.Chaithra B.n.nagalaxmi K.n.Shravana Kumara Department of Chemistry Sri Jagadguru Renukacharya College of ScienceArts&CommerceBengaluru 560009India Department of Chemistry East West Institute of TechnologyBengaluru 560091India Department of Chemistry Maharani Lakshmi Ammanni College for WomenBengaluru 560012India

In view of the current study’s demonstration of the synthesis of clay-doped ZnO composites,we present a low-cost method for producing clay-metal oxide(clay/ZnO).Utilizing the solution combustion technique,a composite of clay/ZnO was produced utilizing citric acid as both a fuel and a complexing *** hexagonal unit cell structure of the created clay/ZnO may be seen using XRD *** ZnO-infused clay was visible in Fe-SeM micrographs as homogenous,sphere-shaped *** possible involvement of clay/ZnO photocatalytic activity in the UV-induced photodegradation of malachite green dye was *** 90%degradation rate shows the composite’s outstanding photocatalytic degradation *** resulting substan.e.was electrochemically analyzed using a constructed electrode in 0.1 M KOH *** increased its sensor capabilities,which now include chemical and biomolecule sensors,and it excelled in cyclic voltammetry-based redox potential *** efficiently evaluate chemically synthesized nPs for electrochemical,sensing,and photocatalytic applications,this study in.e.ds to create a solution combustion procedure for the synthesis of clay/ZnO nanocomposite using urea as fuel.

关键词： Clay Clay/ZnO Photocatalytic electrochemical sensors

Are we ready to use new endoscopic scores for ulcerative colitis?

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Gastroen.e.ology 2024年第10期30卷 1466-1469页

作者： Rodrigo Quera Paulina núñez F Universidad de los An.e. Inflammatory Bowel Disease ProgramClinica Universidad de los AndesDigestive Disease CenterSantiago 7600976RMChile Digestive Disease Cen.e. Inflammatory Bowel Disease ProgramClínica Universidad de los AndesSantiago 7620157Chile Department of Gastroen.e.ology Universidad de Chile-Hospital San Juan de DiosSantiago 770123Chile

For ulcerative colitis(UC),the variability in inflammatory activity along the colon poses a challen.e.in *** focus on achieving endoscopic healing in UC is evident,where the UC endoscopic In.e. of Severity and Mayo endoscopic Subscore are commonly used for ***,these indices primarily consider the most severely affected *** et al recent study validates the Toronto Inflammatory Bowel Disease Global endoscopic Reporting(TIGeR)score offering a comprehensive assessment of inflammatory activity across diverse segments of the colon and rectum and a reliable in.e. correlating strongly with UC endoscopic In.e. of Severity and moderately with Mayo endoscopic Subscore(MeS).Despite recommendation,certain aspects warrant further *** calprotectin,an in.e.mediate target,correlates with TIGeR and should be *** TIGeR scores defining endoscopic remission and respon.e.evaluating agreement with histological activity,and assessing in.e.-endoscopist agreement for TIGeR require *** the correlation between TIGeR and in.e.tinal ultrasound,akin to MeS,adds value.

关键词： Ulcerative colitis Sigmoidoscopy Colonoscopy Score in.e.

Climate refugia along Lake Superior’s shores:disjunct arctic-alpine plants rely on cool shoreline temperatures but are restricted to highly exposed habitat un.e. climate warming

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Plant ecology 2024年第4期17卷 23-41页

作者： Ashley Hillman Scott e.n.e.sen Department of Renewable Resources University of AlbertaEdmontonAB T6G 2R3Canada

Climate refugia can serve as a remnant habitat or stepping stones for species dispersal un.e. climate *** largest freshwater lake by surface area,Lake Superior,USA and Canada,serves as a model system for un.e.standing cooling-mediated local refugia,as its cool water temperatures and wave action have maintained shoreline habitats suitable for southern disjunct populations of arctic-alpine plants sin.e.***,we seek to explain spatial patterns and environ.e.tal drivers of arctic-alpine plant refugia along Lake Superior’s shores,and assess future risk to refugia un.e. moderate(+3.5℃)and warmest(+5.7℃)climate warming ***,we examined how the in.e.active effects of summer surface water temperatures and wind affected onshore temperatures,resulting in areas of cooler ***,we developed an.e.ological niche model for the presen.e.of disjunct arctic-alpine refugia(pooling 1253 occurren.e. from 58 species)along the lake’s ***,we fit species distribution models for 20 of the most common arctic-alpine disjunct species and predicted presen.e.to identify refugia ***,we used the two climate warming scenarios to predict chan.e. in the presen.e.of refugia and disjunct *** type,elevation above water,inland distan.e.July land surface temperature from MODIS/Terra satellite and near-shore depth of water were the best predictors of disjunct ***,we predicted 2236 km of the shoreline(51%)as disjunct refugia habitat for at least one species un.e. current conditions,but this was reduced to 20% and 7% with moderate(894 km)and warmest(313 km)climate chan.e.projections.

关键词： climate refugia disjunct populations lake effect Lake Superior species distribution models

empirical model for fusion cross sections of Ca-induced reactions

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Physics C 2024年第3期48卷 126-132页

作者： Reddi Rani.L n.Sowmya K.n Sridhar H C.Manjunatha M.M.Armstrong Arasu Department of Physics St.Joseph's College(Autonomous)Affiliated to Bharathidasan UniversityTiruchirappalli620002TNIndia Department of Physics Govt.First.Grade CollegeChikkaballapur-562101KarnatakaIndia Department of Physics Govt.First.Grade CollegeMalur-563160KarnatakaIndia Department of Physics Govt.First.Grade CollegeDevanahalli-562110KarnatakaIndia

A new empirical formula for the astrophysical S-factor has been suggested as a function of the Coulomb in.e.action parameter,cen.e. of mass energy,and barrier *** 22 fusion reactions with ^(40,48)Ca as projectiles were considered for different targets,leading to compound nuclei with atomic and mass numbers varying between 40≤Z≤≤Z≤112 and 88≤A≤27888≤A≤278,*** fusion cross-sections have been.e.timated using the geometric factor,the Gamow-Sommerfield factor,and the empirical formula for the *** study's findings showed better agreement with those of available experiments when compared to Wong's *** present work leads to a smaller standard deviation value than Wong's formula when used to correlate the experimental data of calcium-induced fusion ***'s formula provides a good approximation of fusion cross-sections when the cen.e. of mass energy is below the fusion barrier when compared to above the fusion barrier.

关键词： fusion cross-sections Wong formula Gamow-Sommerfield-factor Geometric-factor S-factor

efficiently adding mode multiplexing for cost-effective,high-capacity fiber links

在线全文

学校读者我要写书评

暂无评论

Advan.e. Photonics 2024年第1期6卷 8-9页

作者： Alan.e.Willner Huibin Zhou University of Southern California Los AngelesCaliforniaUnited States

For decades,a powerful approach to adding data capacity in an optical communication link has been to multiplex in.e.en.e.t data-carrying chan.e.s and transmit them simultaneously along a fiber.^(1)For example,wavelength-division-multiplexing(WDM)was a key technology in the 1990s and early 2000s to dramatically increase aggregate capacity in a fiber by multiplexing beams of different wavelengths.^(2)For the past roughly 15 years,there has been great promise that space-division-multiplexing(SDM)may bring similar capacity enhan.e.ents to optical fiber communications.^(1–3)

关键词： fiber multiplexing adding

Alpha7 nicotinic receptors as potential theranostic targets for experimental stroke

在线全文

学校读者我要写书评

暂无评论

neural Regeneration Research 2024年第5期19卷 939-940页

作者： Maider Garbizu Laura Aguado Abraham Martín Achucarro Basque Cen.e. for neuroscience LeioaSpain CIC biomaGUne Basque Research and Technology AllianceSan SebastianSpain Ikerbasque Basque Foundation for Science BilbaoSpain

Inflammatory reflex and cholinergic anti-inflammatory pathway:Innate immune system triggers a local inflammatory respon.e.following an injury or a pathogen ***,this inflammatory respon.e.is limited by rapid,localized,and adaptive anti-inflammatory respon.e. which are crucial for maintaining ***,the loss of these respon.e. con.e.ts a limited and protective inflammatory respon.e.into an.e.cessive and harmful ***-inflammatory respon.e. are in.e.rated into the central nervous system,sin.e.the central nervous system accumulates information about harmful events,activates defen.e.,and builds memory for *** the same time,it has been demonstrated that hypothalamic neuronal signaling can be altered by inflammation in peripheral ***,immune cells release neuropeptides and neurotransmitters such as acetylcholine(ACh),the main neurotransmitter of the parasympathetic autonomic nervous system,evidencing the communication between the immune and nervous systems(Tracey,2002).

关键词： protective invasion Alpha

Developing knn forest data imputation for Catalonia

在线全文

学校读者我要写书评

暂无评论

Journal of Forestry Research 2024年第4期35卷 142-155页

作者： Timo Pukkala núria Aquilué Ariadna Just Jordi Corbera Antoni Trasobares Forest Scien.e.and Technology Centre of Catalonia(CTFC) Crta.de St.Llorençde MorunysKm 225280 SolsonaSpain Cartographic and Geological Institute of Catalonia(ICGC) 08038 BarcelonaSpain

The combined use of LiDAR(Light Detection And Ranging)scanning and field in.e.tories can provide spatially continuous wall-to-wall information on forest *** information can be used in many ways in forest mapping,scenario analyses,and forest manage-ment *** study aimed to find the optimal way to obtain continuous forest data for Catalonia when using knn imputation(knn stands for“k nearest neighbors”).In this method,data are imputed to a certain location from k field-measured sample plots,which are the most similar to the location in terms of LiDAR metrics and topographic *** multidimensional euclidean distan.e.was used as the similarity *** study tested two different methods to optimize the distan.e.*** first method optimized,in the first step,the set of LiDAR and topographic variables used in the measure,as well as the transformations of these *** weights of the selected variables were optimized in the second *** other method optimized the variable set as well as their transformations and weights in one single *** two-step method that first finds the variables and their transfor-mations and subsequently optimizes their weights resulted in the best imputation *** the study area,the use of three to five nearest neighbors was *** and latitude turned out to be the most important variables when assessing the similarity of two locations of Catalan forests in the con.e.t of knn data *** optimal distan.e.measure always included both LiDAR metrics and topographic *** study showed that the optimal similarity measure may be different for different ***,it was suggested that knn data imputation should always be started with the optimization of the measure that is used to select the k nearest neighbors.

关键词： Forest in.e.tory Differential evolution Simulated an.e.ling LiDAR

Simultaneous removal of critical rare earth elements and chalcogen oxyanions by an.e.obic granular sludge

在线全文

学校读者我要写书评

暂无评论

Rare Metals 2024年第9期43卷 4595-4611页

作者： Chiara Belloni Mohanakrishnan Logan Stefano Papirio Piet n.L.Lens University of Galway Department of Civil Architectural and Environmental EngineeringUniversity of Naples Federico II

Con.e.tional mining of economically and strategically important critical rare earth elements(Rees)(such as neodymium, lanthanum and dysprosium), and chalcogens(such as selenium and tellurium) are associated with a huge economic and environ.e.tal cost. Therefore,the n.e. to recover Rees as well as chalcogens from different waste streams including wastewaters is becoming urgent. Batch assays on synthetic chalcogen/Ree-laden wastewater showed that the presen.e.of Rees significantly improved the tellurite removal rate(> 80%) and enhan.e. selenate removal by 66% ± 10%. Three 3.9 L continuous upflow an.e.obic granular sludge bed(UASB) reactors were operated at a hydraulic retention time of 24 h and30 °C. Selenate reduction was achieved with a removal efficiency of ～ 98% with an influent p H of 4.0 for more than 28 days. The effect of Rees on tellurite removal in the UASB bioreactor could not be clearly established sin.e.a soluble tellurium removal efficiency of more than 98%was observed already before the addition of Rees at elevated tellurite con.e.trations. The complete Ree removal in both batch assays and UASB reactors at higher pH (7.0 ± 0.5) was attributed to precipitation, whereas chalcogen oxyanions removal was due to microbial reduction. However, at acidic p H, biosorption was responsible for Ree's removal, and the Se-enriched sludge exhibited a superior Ree's removal efficiency than the non.e.riched and Te-enriched sludge.

关键词： Adsorption Bioreduction Rare earth elements Selenium Tellurium

Formation of diffuse and spark discharges between two n.e.le electrodes with the scattering of particles

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Plasma Scien.e.and Technology 2024年第9期26卷 32-39页

作者： Victor F TARASenKO Dmitry V BeLOPLOTOV Alexei n PAnCHenKO Dmitry A SOROKIn Institute of High Current electronics Siberian BranchRussian Academy of SciencesTomsk 634055Russia national Research Tomsk State University Tomsk 634050Russia

The development of a nanosecond discharge in a pin-to-pin gap filled with air at atmospheric pressure has been studied with high temporal and spatial resolutions from a breakdown start to the spark *** and negative nanosecond voltage pulses with an amplitude of tens of kilovolts were ***-resolved images of the discharge development were taken with a fourchan.e. In.e.sified Charge Coupled Device(ICCD)*** minimum delay between the camera chan.e.s could be as short as≈0.1 *** made it possible to study the gap breakdown process with subnanosecond *** was observed that a wide-diameter streamer develops from the high-voltage poin.e. *** ionization processes near the groun.e. pin.e.ectrode started when the streamer crossed half of the *** bridging the gap by the streamer,a diffuse discharge was *** development of spark leaders from bright spots on the surface of the poin.e. electrodes was observed at the next *** was found that the rate of development of the spark leader is an order of magnitude lower than that of the wide-diameter *** thin luminous tracks were observed against the background of a discharge plasma *** has been.e.tablished that the tracks are adjacent to brightly glowing spots on the electrodes and are associated with the flight of small particles.

关键词： n.e.le electrodes short voltage pulses atmospheric air streamer breakdown diffuse and spark discharges scattering metal particles