检索结果-南通市图书馆

Stochastic contrast Measures for SAR Data: A Survey

在线全文

学校读者我要写书评

暂无评论

雷达学报（中英文） 2019年第6期8卷 758-781页

作者： alejandro c.Frery La ccAN–Laboratório de computa??o científica e Análise Numérica Universidade Federal de Alagoas

“contrast”is an generic denomination for“difference”.Measures of contrast are a powerful tool in image processing and analysis,e.g.,in denoising,edge detection,segmentation,classification,parameter estimation,change detection,and feature *** present a survey on techniques that aim at measuring the contrast between(i)samples of SAR imagery,and(ii)samples and models,with emphasis on those that employ the statistical properties of the data.

关键词： contrast Divergence Entropy Geodesic distance Statistics Synthetic Aperture Radar(SAR)

Status and prospects for symmetric organic redox flow batteries

在线全文

学校读者我要写书评

暂无评论

Journal of Energy chemistry 2025年第1期100卷 125-143页

作者： Md Al Raihan c.Adam Dyker Department of chemistry University of New Brunswick

As environmental concerns from fossil fuel consumption intensify, large-scale energy storage becomes imperative for the integration of renewable sources like wind, hydro, and solar with the electrical *** flow batteries, particularly those employing organic molecules, are positioned as a key technology for this purpose. This review explores the growing field of symmetric organic redox flow batteries(ORFBs) within this context. Unlike traditional asymmetric designs based on unique active materials for each electrode, symmetric ORFBs involve a single bipolar species for both electrodes. This review highlights the benefits of a symmetric design, and categorizes five distinct classes of organic bipolar molecules used in both aqueous and non-aqueous solvents. By providing a comprehensive overview of their cell cycling and performance characteristics, the strengths and weaknesses of the diverse categories of bipolar molecules are highlighted for both solvent systems, as are opportunities for future development. This should guide new research directions and advance the development of practical symmetric ORFBs.

关键词： Redox flow battery Symmetric battery Organic battery Aqueous electrolyte Non-aqueous electrolyte

Nutritional therapy for hepatocellular carcinoma

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

World Journal of Gastrointestinal Oncology 2021年第10期13卷 1440-1452页

作者： Astrid Ruiz-Margáin Berenice M Román-calleja Paulina Moreno-Guillén JoséA González-Regueiro DeyaniraKúsulas-Delint alejandro c.mpos-murguía Nayelli c Flores-García Ricardo Ulises Macías-Rodríguez Liver Nutrition clinic Department of GastroenterologyInstituto Nacional de Ciencias Médicas y Nutrición Salvador ZubiránMexico City 14080Mexico Liver Fibrosis and Nutrition Lab MICTLÁN-Network(Mechanisms of Liver InjuryCell Death and Translational Nutrition in Liver Diseases-Research Network)Mexico City 14080Mexico Department of Gastroenterology Instituto Nacional de Ciencias Médicas y Nutrición Salvador ZubiránMexico City 14080Mexico

Hepatocellular carcinoma(Hcc)is the most frequent primary liver cancer and presents together with cirrhosis in most *** addition to commonly recognized risk factors for Hcc development,such as hepatitis B virus/hepatitis c virus infection,age and alcohol/tobacco consumption,there are nutritional risk factors also related to Hcc development including high intake of saturated fats derived from red meat,type of cooking(generation of heterocyclic amines)and contamination of foods with *** the contrary,protective nutritional factors include diets rich in fiber,fruits and vegetables,n-3 polyunsaturated fatty acids and *** the patient is being evaluated for staging and treatment of Hcc,special attention should be paid to nutritional support,including proper nutritional assessment and therapy by a multidisciplinary *** must be considered that these patients usually develop Hcc on top of long-lasting cirrhosis,and therefore they could present with severe *** complications should be properly addressed and considered for nutritional *** addition to traditional methods,functional testing,phase angle and computed tomography scan derived skeletal muscle index-L3 are among the most useful tools for nutritional *** therapy should be centered on providing enough energy and protein to manage the increased requirements of both cirrhosis and *** with branched-chain amino acids is also recommended as it improves response to treatment,nutritional status and survival,and finally physical exercise must be encouraged and adapted to individual needs.

关键词： Sarcopenia Liver cancer Diet Branched-chain amino acids Nutrition

Differential response of injured and healthy retinas to syngeneic and allogeneic transplantation of a clonal cell line of immortalized olfactory ensheathing glia:a double-edged sword

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Neural Regeneration Research 2025年第8期20卷 2395-2407页

作者： María Norte-Muñoz María Portela-Lomba Paloma Sobrado-calvo Diana Simón Johnny Di Pierdomenico alejandro Gallego-Ortega Mar Pérez JoséMcabrera-Maqueda Javier Sierra Manuel Vidal-Sanz María Teresa Moreno-Flores Marta Agudo-Barriuso Grupo de Investigación Oftalmología Experimental Departamento de OftalmologíaOptometríaOtorrinolaringología y Anatomía PatológicaFacultad de MedicinaUniversidad de MurciaInstituto Murciano de Investigación Biosanitaria(IMIB)Campus de Ciencias de la SaludMurciaSpain Experimental Sciences Faculty Universidad Francisco de VitoriaPozuelo de AlarcónMadridSpain Anatomy Histology and Neuroscience DepartmentMedicine FacultyUniversidad Autónoma de MadridMadridSpain center of Neuroimmunology Service of NeurologyLaboratory of Advanced Imaging in Neuroimmunological DiseasesHospital Clínic of BarcelonaInstitut d’Investigacions Biomèdiques August Pi i Sunyer(IDIBAPS)and Universitat de BarcelonaBarcelonaSpain Medicine Faculty Universidad Francisco de VitoriaPozuelo de AlarcónMadridSpain

Olfactory ensheathing glia promote axonal regeneration in the mammalian central nervous system,including retinal ganglion cell axonal growth through the injured optic ***,it is unknown whether olfactory ensheathing glia also have neuroprotective *** ensheathing glia express brain-derived neurotrophic factor,one of the best neuroprotectants for axotomized retinal ganglion ***,we aimed to investigate the neuroprotective capacity of olfactory ensheating glia after optic nerve *** ensheathing glia cells from an established rat immortalized clonal cell line,TEG3,were intravitreally injected in intact and axotomized retinas in syngeneic and allogeneic mode with or without microglial inhibition or immunosuppressive *** and gene expression analyses were *** bulb-derived primary olfactory ensheathing glia and TEG3 express major histocompatibility complex classⅡ*** and syngenically transplanted TEG3 cells survived in the vitreous for up to 21 days,forming an *** axotomized retinas,only the allogeneic TEG3 transplant rescued retinal ganglion cells at 7 days but not at 21 *** these retinas,microglial anatomical activation was higher than after optic nerve crush *** intact retinas,both transplants activated microglial cells and caused retinal ganglion cell death at 21 days,a loss that was higher after allotransplantation,triggered by pyroptosis and partially rescued by microglial inhibition or ***,neuroprotection of axotomized retinal ganglion cells did not improve with these *** different neuroprotective properties,different toxic effects,and different responses to microglial inhibitory treatments of olfactory ensheathing glia in the retina depending on the type of transplant highlight the importance of thorough preclinical studies to explore these variables.

关键词： cell therapy immune recognition major histocompatibility complex class II(MHcII) neuroprotection olfactory ensheathing glia retinal ganglion cells

Acquired sensorineural hearing loss,oxidative stress,and microRNAs

在线全文

学校读者我要写书评

暂无评论

Neural Regeneration Research 2025年第9期20卷 2513-2519页

作者： Desmond A.Nunez Ru c.Guo Division of Otolaryngology–Head&Neck Surgery Department of SurgeryFaculty of MedicineThe University of British ColumbiaVancouverBCCanada Division of Otolaryngology–Head&Neck Surgery Gordon&Leslie Diamond Health Care CentreVancouver General HospitalVancouverBCCanada Faculty of Medicine–The University of British columbia VancouverBCCanada

Hearing loss is the third leading cause of human ***-related hearing loss,one type of acquired sensorineural hearing loss,is largely responsible for this escalating global health ***-induced,ototoxic,and idiopathic sudden sensorineural are other less common types of acquired hearing *** etiology of these conditions is complex and multi-fa ctorial involving an interplay of genetic and environmental *** stress has recently been proposed as a likely linking cause in most types of acquired sensorineural hearing *** non-coding RNA sequences known as microRNAs(miRNAs)have increasingly been shown to play a role in cellular hypoxia and oxidative stress responses including promoting an apoptotic *** hair cell death is a central histopathological finding in sensorineural hearing *** these cells do not regenerate in humans,it underlies the irreversibility of human age-related hearing *** EMBASE,Ovid MEDLINE,Web of Science core collection,and *** databases over the period August 1,2018 to July 31,2023 were searched with"hearing loss,""hypoxamiRs,""hypoxia,""microRNAs,""ischemia,"and"oxidative stress"text words for English language primary study publications or registered clinical *** red clinical trials known to the senior author we re also assessed.A total of 222studies were thus *** excluding duplicates,editorials,retra ctions,secondary research studies,and non-English language articles,39 primary studies and clinical trials underwent full-text *** resulted in 11 animal,in vitro,and/or human subject journal articles and 8 registered clinical trial database entries which form the basis of this narrative *** miR-34a and miR-29b levels increase with age in *** miRNAs were demonstrated in human neuroblastoma and murine cochlear cell lines to target Sirtuin 1/peroxisome proliferato r-activated receptor gamma coactivator-1-alpha(SIRT1/P Gc-1α),SIRT

关键词： hearing loss hypoxia microRNAs oxidative stress sensorineural

Indigenous knowledge as data for modern fishery management:a case study of Dungeness crab in Pacific canada

在线全文

学校读者我要写书评

暂无评论

Ecosystem Health and Sustainability 2017年第8期3卷 32-42页

作者： Natalie c Ban Lauren Eckert Madeleine McGreer alejandro Frid School of Environmental Studies University of VictoriaVictoriaBCCanada central coast Indigenous Resource Aliance Campbell RiverBCCanada

Introduction:F isheries management is often data-limited,and conducted at spatial scales that are too large to address the needs of Indigenous peoples,whose cultures depend upon the local availability of marine ***:We combined Indigenous ecological knowledge with simulation modelling to inform modern fishery ***-structured interviews with Indigenous fishers in coastal British columbia,canada,uncovered severe declines in the abundance and catches of Dungeness crab(cancer magister)since the *** modelled the current probability of"successful"crab harvesting trips-as defined by expectations from past catches by Indigenous fishers-using fishery-independent data from nine *** probabilities were very low(cept ***:Our study highlights that local depletions,which Indigenous fishers attribute to commercial and recreational fisheries,have been widespread and undetected by federal managers who manage Dungeness crab at regional scales without fishery-independent ***,local depletions impacted the ability of Indigenous fishers to access traditional ***:Integrating Indigenous knowledge with scientific research is crucial to inform locally-relevant fisheries management and conservation.

关键词： Indigenous knowledge marine conservation .Dungeness crab spatial management co-management stewardship

Multiple sclerosis is at a checkpoint: advancing the program

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Neural Regeneration Research 2025年第3期20卷 811-812页

作者： Brandon c.Smith Jessica L.Williams Department of Neurosciences Lerner Research InstituteCleveland ClinicClevelandOHUSA Department of Biological Geologicaland Environmental SciencesCleveland State UniversityClevelandOHUSA

Multiple sclerosis(MS) is a chronic inflammatory and demyelinating disease of the central nervous system(cNS). Patients with MS experience sensory and motor function loss due to myelin and/or axon damage perpetuated b... 详细信息

关键词： Hauser sclerosis damage

Unmanned Aerial Vehicle Multi-Access Edge computing as Security Enabler for Next-Gen 5G Security Frameworks

在线全文

学校读者我要写书评

暂无评论

Intelligent Automation & Soft computing 2023年第8期37卷 2307-2333页

作者： Jaime Ortiz córdoba alejandro Molina Zarca Antonio Skármeta Department of Information and communications Engineering University of MurciaMurcia30003Spain

5G/Beyond 5G(B5G)networks provide connectivity to many heterogeneous devices,raising significant security and operational issues and making traditional infrastructure management increasingly *** this regard,new frameworks such as Anastacia-H2020 or INSPIRE-5GPlus automate the management of next-generation infrastructures,especially regarding policy-based security,abstraction,flexibility,and *** paper presents the design,workflow,and implementation of a security solution based on Unmanned Aerial Vehicles(UAVs),able to extend 5G/B5G security framework capabilities with UAV features like dynamic service provisioning in specific geographic *** proposed solution allows enforcing UAV security policies in proactive and reactive ways to automate UAV dynamic deployments and provisioning security Virtual Network Functions(VNFs)in the onboard Multi-access Edge computing(MEc)node.A UAV has been ensembled from scratch to validate the proposal,and a raspberry-pi has been onboarded as compute *** implementation provides a VNF for dynamic UAV management,capable of dynamically loading waypoints into the flight controller to address reactive autonomous flights,and anMLbased VNF capable of detecting image *** to the security policies,the onboard VNFs can be dynamically configured to generate alerts to the framework and apply local reactions depending on the detection *** our experiments,we measured the time it takes for the solution to be ready after receiving a security policy for detecting patterns in a specific geographical *** time it takes for the solution to react automatically was also *** results show that the proactive flow configuration considering ten waypoints can be enforced in less than 3 s,and a local reactive flow can be enforced in around 1 *** consider that the results are promising and aligned with other security enabler solutions as part of existing 5G/6G security frameworks.

关键词： UAV 5G AI NFV security

clinical perspectives,assessment,and mechanisms of metabolicassociated fatty liver disease in patients with cOVID-19

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 Gastroenterology 2021年第33期27卷 5502-5519页

作者： alejandro c.mpos-murguía Berenice M Román-calleja JoséA González-Regueiro Ivonne Hurtado-Díaz-de-León Alberto Adrián Solís-Ortega Nayelli c Flores-García Ignacio García-Juárez Astrid Ruiz-Margáin Ricardo Ulises Macías-Rodríguez Department of Gastroenterology Instituto Nacional de Ciencias Médicas y Nutrición Salvador ZubiránMexico City 14080Mexico Liver Fibrosis and Nutrition Lab(LFNLab) MICTLÁN-Network(Mechanisms of Liver InjuryCell Death and Translational Nutrition in Liver Diseases-Research Network)Mexico City 14080Mexico

Metabolic diseases are highly prevalent worldwide and have been associated with adverse clinical outcomes,including mortality,in patients developing coronavirus disease(cOVID-19).Because of the close relationship between metabolic diseases such as type 2 diabetes mellitus and obesity and the presence of metabolicassociated fatty liver disease(MAFLD),a high number of cases of patients affected by both MAFLD and cOVID-19 would be expected,especially in highrisk *** studies have shown an increased risk of adverse clinical outcomes,viral shedding,and deep vein thrombosis,especially in patients with MAFLD-related liver *** predisposition to poor outcomes and severe acute respiratory syndrome coronavirus 2 infection in patients with MAFLD could be secondary to mechanisms common to both,including preexisting systemic chronic inflammation,endothelial dysfunction,and involvement of the renin-angiotensin *** of the increased risk of adverse outcomes,MAFLD should be screened in all patients admitted for *** computed tomography scans could be of help,assessment of liver fibrosis is also recommended,favoring noninvasive methods to limit the exposure of healthcare *** involvement in this population ranges from abnormalities in liver chemistry to hepatic steatosis in postmortem ***,preventive measures should be strongly advocated in patients already known to have MAFLD,including the use of telemedicine and vaccination in addition to general measures.

关键词： Metabolic-associated fatty liver disease cOVID-19 Mortality Fibrosis Histology Epidemiology