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Integralinput-to-statestability ystemswithsmalldelays Integral input-to-state stability of systems with small delays

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Control Theory and Technology 2024年第3期22卷 455-467页

作者： r.h.harsha Nawarath.a.Yuandan Lin Yuan Wang Department of Mathematical Sciences Florida Atlantic UniversityBoca RatonFL 33431USA

We consider how small delays affect the integral-input-to-state stability(iss)property for a *** result is similar to the input-to-state stability(Iss)result obtained in[1]:the iss property will be preserved in a practical and semi-global manner if the delay interval is small ***,since the iss quantifies the robust stability in terms of a generalized Li norm of the inputs instead of a generalized Loo norm of the inputs for the Iss case,the techniques and proofs for the Iss case do not apply to the iss case *** the proofs in[1]are based on the Lyapunov-razumikhin approach,our proofs are based on the iss-Lyapunov functions for the zero-delay *** addition to the interest by its own in showing how the iss property is affected by small delays,the result also serves to the study of the iss property for singularly perturbed systems.

关键词： Integral-input-to-state stability Nonlinear systems Small delays Lyapunov method

On an isotropic porous solid cylinder:the analytical solution and sensitivity analysis of the pressure

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Applied Mathematics and Mechanics(English Edition) 2024年第9期45卷 1499-1522页

作者： h.a.GhArI L.MILLEr r.PENTA J.MErODIO Departamento de Matematica Aplicada a las TIC ETS de Ingenieria de Sistemas InformaticosUniversidad Politecnica de MadridMadrid 28031Spain School of Mathematics and Statistics University of GlasgowGlasgow G128QQU.K.

Within this work,we perform a sensitivity analysis to determine the influence of the material input parameters on the pressure in an isotropic porous solid *** provide a step-by-step guide to obtain the analytical solution for a porous isotropic elastic cylinder in terms of the pressure,stresses,and elastic *** obtain the solution by performing a Laplace transform on the governing equations,which.a.e those of Biot's poroelasticity in cylindrical polar *** enforce radial boundary conditions and obtain the solution in the Laplace transformed domain before reverting back to the time *** sensitivity analysis is then carried out,considering only the derived pressure *** analysis finds that the time t,Biot's modulus M,and Poisson's ratio ν have the highest influence on the pressure whereas the initial value of pressure P_(0) plays a very little role.

关键词： sensitivity analysis Laplace transform cylindrical polar coordinate Biot's modulus cylinder

Flexible neural probes:a review of the current advantages,drawbacks,and future demands

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2024年第2期25卷 153-167页

作者： Sara PIMENTA Joao r.FrEITAS Joséh.COrrEIA CMEMS-UMinho University of MinhoGuimarães4800-058Portugal LABBELS-Associate Laboratory Braga/GuimarãesPortugal

Brain diseases affect millions of people and have a huge social and economic *** use of neural probes for studies in animals has been the main approach to increasing knowledge about neural network ***,neuroscientists are trying to develop new and more effective therapeutic approaches to treating neurological *** implementation of neural probes with multifunctionalities(electrical,optical,and fluidic interactions)has been increasing in the last few years,leading to the creation of devices with high temporal and spatial *** the applicability of,and elements integrated into,neural probes has also led to the necessity to create flexible interfaces,reducing neural tissue damage during probe implantation and increasing the quality of neural acquisition *** this paper,we review the fabrication,characterization,and validation of several types of flexible neural probes,exploring the main advantages and drawbacks of these ***,future developments and applications are ***,this review aims to present the currently available flexible devices and future appropriate avenues for development as possible guidance for future engineered devices.

关键词： Brain knowledge Flexible interface Multifunctional probe

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欧亚主义者

世界哲学 2024年第5期 99-104页

作者： [俄]h.a.别尔嘉耶夫祖春明(译) 徐凤林(校) 不详中国社会科学院大学哲学学院北京大学哲学系

《欧亚主义者》是俄国最具影响力的思想家之一h.a.别尔嘉耶夫在1925年撰写的。从表面上来看,该文是对当时风头正盛的古典欧亚主义思潮所进行的批判性反思;但从俄罗斯哲学史视角来看,它集中反映了俄罗斯哲学的传统范式与新兴范式之间的... 详细信息

《欧亚主义者》是俄国最具影响力的思想家之一h.a.别尔嘉耶夫在1925年撰写的。从表面上来看,该文是对当时风头正盛的古典欧亚主义思潮所进行的批判性反思;但从俄罗斯哲学史视角来看,它集中反映了俄罗斯哲学的传统范式与新兴范式之间的矛盾与对立,即前者坚持从全人类的视角出发来思考俄罗斯民族的历史命运,但后者则立足于俄罗斯民族的特殊性来反思自己的发展道路。时至今日,这种新旧范式之间的对立仍然存在,且其抽象形式也广泛存在于俄罗斯之外的其他后发型现代性国家之中。

关键词：欧亚主义革命后思潮全球文化危机俄罗斯理念

routine utilization of machine perfusion in liver transplantation:ready for prime time?

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World Journal of Gastroenterology 2024年第11期30卷 1488-1493页

作者： Alessandro Parente Keyue Sun Philipp Dutkowski am James Shapiro Andrea Schlegel Department of Surgery Division of TransplantationUniversity of Alberta HospitalEdmonton T6G 2B7Canada Immunity and Inflammation Lerner Research InstituteClevelandOH 44195United States Swiss hepato-Pancreato-Biliary Center Department of Visceral and Transplantation SurgeryUniversity Hospital ZurichZurich 8091Switzerland Immunity and Inflammation Digestive Disease and Surgery InstituteClevelandOH 44195United States

The last decade has been notable for increasing high-quality research.a.d dramatic improvement in outcomes with dynamic liver *** evidence from numerous randomized controlled trials has been pooled by meta-analyses,providing the highest available evidence on the protective effect of machine perfusion(MP)over static cold storage in liver transplantation(LT).Based on a protective effect with less complications and improved graft survival,the field has seen a paradigm shift in organ *** editorial focuses on the role of MP in LT and how it could become the new“gold standard”.Strong collaborative efforts are needed to explore its effects on long-term outcomes.

关键词： Liver transplantation Machine perfusion Viability assessment hypothermic oxygenated perfusion Normothermic machine perfusion

Deformable microlaser force sensing

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Light(Science & Applications) 2024年第6期13卷 1196-1209页

作者： Eleni Dalaka Joseph Shill Jonathan h.h.Booth.a.na Popczyk Stefan r.Pulver Malte C.Gather Marcel Schubert Centre of Biophotonics SUPASchool of Physics and AstronomyUniversity of St AndrewsNorth HaughSt AndrewsUK humboldt Centre for Nano-and Biophotonics Department of ChemistryUniversity of CologneKölnGermany School of Psychology and Neuroscience University of St AndrewsSt Mary’s QuadSouth StreetSt AndrewsUK Institute for Bioengineering of Catalonia BarcelonaSpain

Mechanical forces are key regulators of cellular behavior and function,affecting many fundamental biological processes such.a. cell migration,embryogenesis,immunological responses,and pathological *** force sensors and imaging techniques have been developed to quantify these otherwise invisible forces in single cells and in ***,current techniques rely h.a.ily on high-resolution microscopy and do not allow interrogation of optically dense tissue,reducing their application to 2D cell cultures and highly transparent biological ***,we introduce DEFOrM,deformable microlaser force sensing,a spectroscopic technique that detects sub-nanonewton forces with unprecedented spatio-temporal *** is based on the spectral analysis of laser emission from dye-doped oil microdroplets and uses the force-induced lifting of laser mode degeneracy in these droplets to detect nanometer *** validation by atomic force microscopy and development of a model that links changes in laser spectrum to applied force,DEFOrM is used to measure forces in 3D and at depths of hundreds of microns within tumor spheroids and late-stage Drosophila *** furthermore show continuous force sensing with single-cell spatial and millisecond temporal resolution,thus paving the way for non-invasive studies of biomechanical forces in advanced stages of embryogenesis,tissue remodeling,and tumor invasion.

关键词： invasion otherwise hundreds

Positive h.a.th.a. integrated quantitative approach in patients with chronic gastrointestinal and hepato-pancreatico-biliary disorders

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World Journal of Gastroenterology 2024年第28期30卷 3418-3427页

作者： Anja h W M Lemlijn-Slenter Karolina AP Wijnands Gijs van der hamsvoort Luuk P van Iperen Nico Wolter Angelique E de rijk Ad am Masclee Department of Social Medicine Faculty of HealthMedicine and Life sciencesCare and Public Health Research Institute Maastricht UniversityMaastricht 6200 MDLimburgNetherlands Division of Gastroenterology and hepatology Department of Internal MedicineSchool of Nutrition and Translational Research in MetabolismMaastricht 6200 MDLimburgNetherlands Social Medical Affairs Employee Insurance Agency(UWV)Heerlen 6400 ACLimburgNetherlands Department of research Academic Knowledge Center Work and Health South-East Netherlands(AKAG-ZON)Heerlen 6400 ACLimburgNetherlands

BACKGrOUND The concept of positive h.a.th(Ph)supports an integrated approach for patients by taking into account six dimensions of *** approach is especially relevant for patients with chronic *** gastrointestinal and hepatopancreatico-biliary(GI-hPB)disorders are among the top-6 of the most prevalent chronically affected organ *** impact of chronic GI-hPB disorders on individuals may be disproportionally high because:(1)The affected organ system frequently contributes to a malnourished state;and(2)persons with chronic GIhPB disorders are often younger than persons with chronic diseases in other organ *** To describe and quantify the dimensions of Ph in patients with chronic GI-hPB *** Prospective,observational questionnaire study performed between 2019 and 2021 in 235 patients with.a.chronic GIhPB disorder attending the Outpatient Department of the Maastricht University Medical *** questionnaires and data from patient files were used to quantify the six dimensions of *** consistency was tested with McDonald’s ***-order Pearson correlations and t-tests were used to assess associations and differences.A P valuered *** The GI-hPB patients scored significantly worse in all dimensions of Ph compared to control data or norm scores from the general *** quality of life,participation and daily functioning,GI-hPB patients scored in the same range as patients with chronic disorders in other organ systems,but depressive symptoms(in 35%)and malnutrition(in 45%)were more frequent in patients with chronic GI-hPB *** scores between the six dimensions were only very weak to weak,forcing us to quantify each domain *** All six dimensions of Ph.a.e impaired in the GI-hPB *** and depressive symptoms are more prevalent compared to patients with chronic disorders in other organ systems.

关键词： Positive h.a.th Chronic gut disorders Gastrointestinal disorders hepato-pancreatico-biliary disorders Integrated care

rational design of AgGaS/ZnS/ZnS quantum dots with.a.near-unity photoluminescence quantum yield via double shelling scheme

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Journal of Materials Science & Technology 2024年第2期169卷 235-242页

作者： h.X.Lu h.Liu Z.Z.Fu Y.Y.Chen h.Q.Dai Z.hu W.L.Zhang r.Q.Guo Institute for Electric Light Sources School of Information Science and TechnologyFudan UniversityShanghai 200433China Institute of Future Lighting Academy for Engineering and TechnologyFudan UniversityShanghai 200433China Yiwu research Institute of Fudan University YiwuZhejiang 322000China Zhongshan-Fudan Joint Innovation Center Zhongshan 528437China

In this study,a two-step method was used to synthesize highly luminescent AgGaS/ZnS/ZnS quantum dots(QDs).In the first step,an inner ZnS shell was formed via a one-pot method,which resulted in a smaller lattice mismatch between the AgGaS core and the outer ZnS shell,thereby facilitating the formation of a thick outer *** the two-step shelling process,the synthesized AgGaS/ZnS/ZnS QDs showed an excellent photoluminescence quantum yield(PLQY)of 96.4%with.a.peak wavelength of 508 nm,repre-senting the highest PLQY reported thus far for AgGaS ***,the effect of halogen ions in Zn precursors on the shelling process was *** was proposed that the capacity of halogen ions to coordinate with the QDs influenced the balance between Zn cation diffusion and ZnS shelling ***,the ZnS shelling reaction was dominant when ZnCl_(2)was employed,while Zn cation diffusion was the dominant process under the I^(−)-rich *** work provides insights into the interfacial restructuring during the ZnS shelling and offers a clear map for the tailored synthesis of core/shell QDs.

关键词： AgGaS Quantum dots Photoluminescence Core/shell Alloyed core/shell interface

Energy Design and Optimization of Greenhouse by Natural Convection

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Fluid Dynamics & Materials Processing 2024年第8期20卷 1903-1913页

作者： h.Benzzine h.Labrim Aouatif Saad Y.Achour D.Zejli r.El Bouayadi Advanced Systems Engineering Laboratory(ASELab) National School of Applied SciencesIbn Tofail UniversityKenitraMorocco

This study addresses the pressing need for energy-efficient greenhouse management by focusing on the innovative application of natural *** primary objective of this study is to evaluate various ventilation strategies to enhance energy efficiency and optimize crop production in agricultural *** advanced numerical simulation tools,the study conducts a comprehensive assessment of natural ventilation’s effectiveness under real-world *** results underscore the crucial role of the stack effect and strategic window positioning in greenhouse cooling,providing valuable insights for greenhouse *** findings shed light on the significant benefits of optimized ventilation and also offer practical implications for improving greenhouse design,ensuring sustainable and efficient agricultural *** study demonstrated energy savings in cooling from November to April,with.a.maximum saving of 680 kWh in March,indicating the effectiveness of strategically positioning windows to leverage the stack *** approach enhances plant growth.a.d reduces the need for costly cooling systems,thereby improving overall energy efficiency and lowering operational expenses.

关键词： Energy greenhouse cooling natural ventilation simulation temperature