检索结果-南通市图书馆

multimodal epidermal devices for hydration monitoring

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

microsystems & Nanoengineering 2017年第1期3卷 267-277页

作者： Siddharth Krishnan Yunzhou Shi R.Chad Webb Yinji ma Philippe Bastien Kaitlyn E.Crawford Ao Wang Xue Feng megan manco Jonas Kurniawan Edward Tir Yonggang Huang Guive Balooch rafal m.pielak John A.Rogers Department of materials Science and Engineering Frederick Seitz Materials Research LaboratoryUniversity of Illinois at Urbana-ChampaignUrbanaIL 61801USA Department of materials Science and Engineering Northwestern UniversityEvanstonIL 60208USA L’Oreal Tech Incubator California Research Center953 Indiana StreetSan FranciscoCA 94107USA Department of Civil and Environmental Engineering Mechanical EngineeringMaterials Science and EngineeringNorthwestern UniversityEvanstonIL 60208USA L’Oréal Research and Innovation 1 Avenue Eugène SchullerAulnay sous Bois 93601France Department of Engineering mechanics Center for Mechanics and MaterialsTsinghua UniversityBeijing 100084China L’Oréal Early Clinical 133 Terminal AvenueClarkNJ 07066USA Departments of materials Science and Engineering Biomedical EngineeringChemistryMechanical EngineeringElectrical Engineering and Computer Scienceand Neurological SurgeryCenter for Bio-Integrated ElectronicsSimpson Querrey Institute for Nano/biotechnologyNorthwestern UniversityEvanstonIL 60208USA

Precise,quantitative in vivo monitoring of hydration levels in the near surface regions of the skin can be useful in preventing skinbased pathologies,and regulating external *** we introduce multimodal sensors with important capabilities in this context,rendered in soft,ultrathin,‘skin-like’formats with numerous advantages over alternative technologies,including the ability to establish intimate,conformal contact without applied pressure,and to provide spatiotemporally resolved data on both electrical and thermal transport properties from sensitive regions of the *** in vitro studies and computational models establish the underlying measurement principles and associated approaches for determination of temperature,thermal conductivity,thermal diffusivity,volumetric heat capacity,and electrical impedance using simple analysis *** studies on 20 patients subjected to a variety of external stimuli validate the device operation and allow quantitative comparisons of measurement capabilities to those of existing state-of-the-art tools.

关键词： epidermal electronics hydration monitoring thermal characterization

ADRC in output and error form:connection,equivalence,performance

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Control Theory and Technology 2023年第1期21卷 56-71页

作者： rafal madonski Gernot Herbst momir Stankovic Energy and Electricity Research Center Jinan UniversityZhuhaiChina University of Applied Sciences ZwickauGermany University of Defence BelgradeSerbia

In this work,we investigate two specific linear ADRC structures,namely output-and *** former is considered a“standard”version of ADRC,a title obtained primarily thanks to its simplicity and effectiveness,which have spurred its adoption across multiple *** latter is found to be especially appealing to practitioners as its feedback error-driven structure bares similarities to conventional control solutions,like PI and *** this paper,we describe newly found connections between the two considered ADRC structures,which allowed us to formally establish conditions for their ***,the conducted comprehensive performance comparison between output-and error-based ADRCs has facilitated the identification of specific modules within them,which can now be conveniently used as building blocks,thus aiding the control designers in customizing ADRC-based solutions and making them most suitable for their applications.

关键词： Active disturbance rejection control(ADRC)-Output-based form Error-based form Equivalence condition:Comparative analysis

The acceleration of a high-charge electron bunch to 10 GeV in a 10-cm nanoparticle-assisted wakefield accelerator

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

matter and Radiation at Extremes 2024年第1期9卷 15-24页

作者： Constantin Aniculaesei Thanh Ha Samuel Yoffe Lance Labun Stephen milton Edward mcCary michael m.Spinks Hernan J.Quevedo Ou Z.Labun Ritwik Sain Andrea Hannasch rafal Zgadzaj Isabella Pagano Jose A.Franco-Altamirano martin L.Ringuette Erhart Gaul Scott V.Luedtke Ganesh Tiwari Bernhard Ersfeld Enrico Brunetti Hartmut Ruhl Todd Ditmire Sandra Bruce michael E.Donovan michael C.Downer Dino A.Jaroszynski Bjorn manuel Hegelich University of Texas at Austin AustinTexas 78712USA SUPA Department of Physics University of StrathclydeGlasgowScotland G4 ONGUnited Kingdom Tau Systems Inc.AustinTexas 78701USA Lawrence Livermore National Laboratory LivermoreCalifornia 94550USA Los Alamos National Laboratory Los AlamosNew Mexico 87545USA Brookhaven National Laboratory UptonNew York 11973USA Ludwig-maximilians-Universität MunichGermany

An intense laser pulse focused onto a plasma can excite nonlinear plasma *** appropriate conditions,electrons from the background plasma are trapped in the plasma wave and accelerated to ultra-relativistic *** scheme is called a laser wakefield *** this work,we present results from a laser wakefield acceleration experiment using a petawatt-class laser to excite the wakefields as well as nanoparticles to assist the injection of electrons into the accelerating phase of the *** find that a 10-cm-long,nanoparticle-assisted laser wakefield accelerator can generate 340 pC,10±1.86 GeV electron bunches with a 3.4 GeV rms convolved energy spread and a 0.9 mrad rms *** can also produce bunches with lower energies in the 4–6 GeV range.

关键词： acceleration nanoparticle charge

Influence of Recycling Waste Glass as Fine Aggregate on the Concrete 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

Journal of Renewable materials 2023年第6期11卷 2925-2940页

作者： rafal A.Hadi Suhad m.Abd Hadee mohammed Najm Shaker Qaidi moutaz mustafa A.Eldirderi Khaled mohamed Khedher Department of Civil Engineering Bilad Alrafidain University CollegeDiyala32001Iraq Department of Civil Engineering College of EngineeringUniversity of DiyalaDiyala32001Iraq Department of Civil Engineering Zakir Husain Engineering CollegeAligarh Muslim UniversityAligarh202002India Department of Civil Engineering College of EngineeringUniversity of DuhokDuhok42001Iraq Department of Civil Engineering College of EngineeringNawroz UniversityDuhok42001Iraq Department of Chemical Engineering College of EngineeringKing Khalid UniversityAbha61421Saudi Arabia Department of Civil Engineering College of EngineeringKing Khalid UniversityAbha61421Saudi Arabia Department of Civil Engineering High Institute of Technological StudiesMrezgua University CampusNabeul8000Tunisia

Recent years have witnessed an increase in the quantity of waste glass(WG)across the *** the fine aggregate with WG is one of the steps toward preserving the natural resources of the environment and creating low-cost *** present study is concerned with replacing fine aggregates with glass powder(GP)at(0%,15%,30%,and 50%).It has studied the fresh and hardened properties(compressive strength,tensile strength,hardened density,and slump)for all the mentioned percent *** findings have shown that all mixtures containing GP gave acceptable slump results within the design limits(2–5 cm)according to ACI standard *** has been observed that increasing the proportion of GP led to a decrease in the weight of ***,replacing GP with sand by 30%has led to an increase in the compressive strength by about 2.4%and 12.45%,and the tensile strength by about 2.5%and 26.54%at 7-and 28-d,respectively in comparison to normal concrete.

关键词： Sustainable concrete glass powder fine aggregate partial replacement

Deciphering the effects of disperser assemblages and seed mass on patterns of seed dispersal in a rodent community

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Integrative Zoology 2017年第6期12卷 457-467页

作者： Aleksandra WRÓBEL rafal ZWOLAK Department of Systematic Zoology Institute of Environmental BiologyAdam Mickiewicz UniversityPoland

The sizes of both seed dispersers and seeds are traits that are likely to interact to influence seed fate in many synzoochoric plant ***,we examined whether members of a granivorous rodent community consisting of species of different body size vary in their effectiveness as seed dispersers,and how this relationship may be altered by seed *** marked northern red oak(Quercus rubra)acorns with plastic tags and placed them in size-selective rodent *** exclosures allowed differential access of rodent groups based on different body size:(i)small(*** spp.);(ii)small and medium(*** striatus);and(iii)small,medium and large(*** carolinensis)species of *** removal did not differ among exclosure types,but more seeds were missing when removed by small rodents,probably because of *** treatments did not influence the relative frequency of acorn ***,small rodents cached considerably fewer and partially ate more acorns than the other 2 *** mean dispersal distance was the longest for cages with medium openings,intermediate for cages with large openings and the shortest for cages with small *** mass positively affected the probability of caching and this relationship was unaffected by exclosure *** conclusion,granivorous rodents of different body sizes strongly differed in their interactions with acorns,with small rodents acting primarily as acorn predators and medium and large species contributing significantly more to dispersal of red oaks.

关键词： acorn dispersal initial seed fate plant-animal interactions rodent community scatterhoarding

Collagen matrix scaffolds:Future perspectives for the management of chronic liver diseases

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 Clinical Cases 2023年第6期11卷 1224-1235页

作者： moises martinez-Castillo Itzel Altamirano-mendoza rafal Zielinski Waldemar Priebe Cristina Piña-Barba Gabriela Gutierrez-Reyes Liver Pancreas and Motility LaboratoryUnit of Experimental MedicineSchool of MedicineUniversidad Nacional Autonoma de MexicoMexico City 06726Mexico CityMexico Department of Experimental Therapeutics The University of Texas MD Anderson Cancer CenterHoustonTX 77054United States materials Research Institute Universidad Nacional Autónoma de MéxicoMexico City 06726Mexico CityMexico

Approximately 1.5 billion chronic liver disease(CLD)cases have been estimated worldwide,encompassing a wide range of liver damage ***,liver disease causes approximately 1.75 million deaths per *** is typically characterized by the silent and progressive deterioration of liver parenchyma due to an incessant inflammatory process,cell death,over deposition of extracellular matrix proteins,and dysregulated ***,these processes impair the correct function of this vital *** and liver cancer are the main complications of CLD,which accounts for 3.5%of all deaths *** transplantation is the optimal therapeutic option for advanced liver *** liver is one of the most common organs transplanted;however,only 10%of liver transplants are *** this context,regenerative medicine has made significant progress in the design of biomaterials,such as collagen matrix scaffolds,to address the limitations of organ transplantation(e.g.,low donation rates and biocompatibility).Thus,it remains crucial to continue with experimental and clinical studies to validate the use of collagen matrix scaffolds in liver disease.

关键词： Liver Chronic liver disease Collagen matrix scaffold Transplant management

Bonding effect of liquid magnesium with open-celled carbon foam in interpenetrating phase composite

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 magnesium and Alloys 2021年第1期9卷 156-165页

作者： marcin Godzierz Anita Olszowka-myalska Natalia Sobczak rafal Nowak Patryk Wrze'sniowski Silesian University of Technology Faculty of Materials EngineeringKrasi´nskiego 8 street40-019 KatowicePoland Institute of metallurgy and materials Science Polish Academy of SciencesRaymonta 25 streetKrakówPoland Łukasiewicz Foundry Research Institute Zakopia´nska 73 street30-418 KrakówPoland

The issue of bonding formation in liquid metal/open-celled carbon foam(C_(of))systems was examined,taking into account the practical aspects of the synthesis of a new type of mg-C metal material *** problem is complex due to the strong oxidation and intense evaporation of liquid magnesium,as well as the 3D geometry of the carbon component,where metal transport occurred through the foam cells’*** experiments performed at 700℃ in ceramic crucibles showed that spontaneous carbon foam infiltration by liquid metal is impossible under the applied conditions,either in an air atmosphere coupled with flux protection or under argon *** tests performed in a UHV chamber filled with static pure Ar by a sessile drop method,coupled with non-contact heating and capillary purification at a test temperature of 700℃ directly in the UHV chamber,showed non-wetting behavior of the mg/C_(of)couple with a correspondingly high contact angle of about 135°.The graphite capillary was then moved down,the liquid drop being slightly pressed into the foam,but these changes did not induce effective foam *** the short contact time for the sessile drop test under an argon atmosphere,SEm+WDS analysis of the solidified mg/C_(of)couple revealed the formation of an mgO interlayer at the interface,with a thickness of approx.1μ*** experimentally demonstrated presence of oxygen in the carbon foam sample,both before and after its contact with magnesium,points to oxide-type bonding being established between mg and C_(of).This observation is in a good agreement with previous reports on the interface characterization of magnesium matrix composites reinforced with glassy carbon materials and carbon fibers by stir casting and pressure *** on the findings of this study,a general structural scheme of the bonding process between carbon foam and liquid magnesium,as an important stage in the syntheses of mg-C composites,was proposed.

关键词： magnesium matrix composite Open-celled carbon foam Interpenetrating phase composites Wetting Interface

Graphene oxide paper as a saturable absorber for Er-and Tm-doped fiber lasers

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

Photonics Research 2015年第4期3卷 119-124页

作者： Jakub Boguslawski Jaroslaw Sotor Grzegorz Sobon rafal Kozinski Krzysztof Librant magdalena Aksienionek Ludwika Lipinska Krzysztof mAbramski Laser&Fiber Electronics Group Wroclaw University of TechnologyWybrzeze Wyspianskiego 2750-370 WroclawPoland Institute of Electronic materials Technology Wolczynska 13301-919 WarsawPoland

In this work pulse generation in both the 1.5 and 2 μm spectral ranges using a graphene oxide(GO)-paper-based saturable absorber in Er-and Tm-doped fiber lasers is presented. The article describes the fabrication method of GO paper and its characterization. The performance of both lasers is discussed in detail. Stable, mode-locked operation provides 613 fs and 1.36 ps soliton pulses centered at 1565.9 and 1961.6 nm in Er-and Tm-doped fiber lasers, respectively. Furthermore, scaling of spectral width, and hence the pulse duration, by increasing the number of GO paper layers in the Er-doped laser is described. The versatility and simplicity of GO paper fabrication combined with the possibility of scaling the optical spectrum full width at half-maximum are essential features that make it a good candidate for ultrafast low-power mode-locked lasers operating in different spectral regions.

关键词： GO Graphene oxide paper as a saturable absorber for Er and Tm-doped fiber lasers Tm

Novel Technique of Radar Interferometry in Dynamic Control of Tall Slender Structures

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 Civil Engineering and Architecture 2012年第8期6卷 1007-1013页

作者： Tomasz Owerko Lukasz Ortyl rafal Kocierz Przemyslaw Kuras Department of Engineering Surveying and Civil Engineering Faculty of Engineering Surveying and Civil Engineering 4GH University of Science and Technology Krak6w 30-059 Poland

Structures of slender shape, like guyed masts, chimneys or TV towers, are exposed to the excitation of dynamic movements. The most common cause of vibration is the wind that induces generation of vortices. Another important reason is a sudden strike from seismic or para-seismic forces. Structure exposed to wind impact is subjected to harmonically various force, perpendicular to the air stream, which is an effect of vortices, shedding on alternate sides of structure. Because of the possibility of vibration the damping of a structure has to be designed. measuring of decay in the oscillation allows to find the logarithmic decrement of the real structure and compare it with the designed value. Apart from damping, the proper designing of tall slender structures has to preserve the significant difference between vortex shedding frequencies and the natural frequencies of the structure shape modes. In the case of guyed masts it is important to analyse the response of a real structure to the exceptional dynamic load, such as a sudden break of guy or fall off a load from a structure, e. g., icing or antennas. The dynamic analysis of a real structure requires the accurate values describing the dynamic behavior of tall structures (e. g., amplitudes). The accuracy of 0.1 mm is provided by ground-based interferometric radar. This device is a part of the IBIS-S (image by interferometric survey) system, which calculates the displacement values on the basis of the difference between phases of waves received in consecutive samples. Typically, the measurements of tall structures are performed with several sensors (strain gauges, accelerometers). Instead, the IBIS-S system allows the quasi-continuous (not limited to points) observation of the entire structure without installation of any sensors or reflectors. The real resolution (along the structure), which means the minimum distance between two observed points, amounts up to about 0.7 m.

关键词：干涉测量技术桅杆结构动态控制新型雷达身材高层建筑结构振荡衰减结构形状