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HVOF-sprayed HAp/S53P4 BG composite coatings on an AZ31 alloy for potential applications in temporary implants

Journal of Magnesium and Alloys 2024年第1期12卷 345-360页

作者： carlos a.poblano-salas John Henao Astrid L.Giraldo-Betancur Paola Forero-Sossa Diego German Espinosa-Arbelaez Jorge A.González-Sánchez Luis R.Dzib-Pérez Susana T.Estrada-Moo Idelfonso E.Pech-Pech CIATEQ A.C. Av.Manantiales 23-AParque Industrial Bernardo QuintanaEl MarquésQuerétaro 76246Mexico CONAHCYT-CIATEQ A.C. Av.Manantiales 23-AParque Industrial Bernardo QuintanaEl MarquésQuerétaro 76246Mexico CONAHCYT-Cinvestav Libramiento Norponiente#2000.Fraccionamiento Real de JuriquillaQuerétaro 76230Mexico Universidad Tecnológica de Querétaro Av.Pie de la Cuesta N°2501Querétaro 76148Mexico CIDESI Av.Playa Pie de la Cuesta No 702Col.San PabloQuerétaro 76125Mexico Center for Corrosion Research Autonomous University of CampecheAv.Héroe de Nacozari No.480P.C.24070San Francisco de CampecheCam.Mexico

Bioactive thermal spray coatings produced via high-velocity oxygen fuel spray(HVOF)from hydroxyapatite(HAp)and bioactive glasses(BG)have the potential to be employed on temporary implants due to the ability of both HAp and BG to dissolve and promote osseointegration,considering that both phases have different reaction and dissolution rates under in-vitro *** the present work,75%***-25%wt.S53P4 bioactive glass powders were HVOF-sprayed to obtain HAp/S53P4 BG composite coatings on a bioresorbable AZ31 *** study is focused on exploring the effect of the stand-off distance and fuel/oxygen ratio variation as HVOF parameters to obtain stable structural coatings and to establish their effect on the phases and microstructure produced in those *** characterization techniques,such as scanning electron microscopy,X-ray diffraction,and Fourier transform infrared spectroscopy,were employed to characterize relevant structural and microstructural properties of the composite *** results showed that thermal gradients during coating deposition must be managed to avoid delamination due to the high temperature achieved(max 550℃)and the differences in coefficients of thermal *** was also found that both spraying distance and oxygen/fuel ratio allowed to keep the hydroxyapatite as the main phase in the *** addition,in-vitro electrochemical studies were performed on the obtained HAp/S53P4 BG composite coatings and compared against the uncoated AZ31 *** results showed a significant decrease in hydrogen evolution(at least 98%)when the bioactive coating was applied on the Mg alloy during evaluation in simulated body fluid(SBF).

关键词： Coatings Composites Thermal spray Temporary implants Hydrogen evolution

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Advancing healthcare through laboratory on a chip technology:Transforming microorganism identification and diagnostics

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World Journal of Clinical Cases 2025年第3期13卷 9-19页

作者： carlos M Ardila Department of Basic Sciences Biomedical Stomatology Research GroupUniversidad de Antioquia U de AMedellín 0057Colombia

In a recent case report in the World Journal of Clinical Cases,emphasized the crucial role of rapidly and accurately identifying pathogens to optimize patient treatment ***-on-a-chip(LOC)technology has emerged as a transformative tool in health care,offering rapid,sensitive,and specific identification of *** editorial provides a comprehensive overview of LOC technology,highlighting its principles,advantages,applications,challenges,and future *** studies from the field have demonstrated the practical benefits of LOC devices in clinical diagnostics,epidemiology,and food *** studies have underscored the superiority of LOC technology over traditional methods,showcasing improvements in speed,accuracy,and *** future integration of LOC with biosensors,artificial intelligence,and data analytics promises further innovation and *** call to action emphasizes the importance of continued research,investment,and adoption to realize the full potential of LOC technology in improving healthcare outcomes worldwide.

关键词： Laboratory-on-a-chip Microorganism identification Diagnostics Point-ofcare testing Biosensors

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Biofilm and Helicobacter pylori:From environment to human host

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World Journal of Gastroenterology 2014年第19期20卷 5632-5638页

作者： Apolinaria García María José salas-Jara Carolina Herrera carlos González Laboratorio de Patogenicidad Bacteriana Departamento de MicrobiologíaFacultad de Ciencias BiológicasUniversidad de ConcepciónConcepción 4030000Chile

Helicobacter pylori(***)is a Gram negative pathogen that selectively colonizes the human gastric *** 50%of the world population is infected with *** reaching up to 90%of infected individuals in developing *** the increased impact upon public health care,its reservoir and the transmission pathway of the species has not been clearly established *** studies allowed the detection of *** in various aquatic environments,even forming biofilm in tap water distribution systems in several countries,suggesting a role of water as a possible reservoir of the *** persistence of human infection with *** and the resistance of clinical isolates to commonly used antibiotics in eradication therapy have been related to the genetic variability of the species and its ability to develop biofilm,demonstrated both in vivo and in vitro ***,during the last years,experimental work with this pathogen has been focused in the search for biofilm inhibitors and biofilm destabilizing ***,only two *** biofilm disrupting agents have been successfully used:Curcumin-a natural dye-and N-acetyl cysteine-a mucolytic agent used in respiratory *** main goal of this review was to discuss the evidences available in the literature supporting the ability of *** to form biofilm upon various surfaces in aquatic environments,both in vivo and in *** results published and our own observations suggest that the ability of *** to form biofilm may be important for surviving under stress conditions or in the spread of the infection among humans,mainly through natural water sources and water distribution systems.

关键词： Helicobacter pylori Biofilm,Water Infection

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Waveform LiDAR concepts and applications for potential vegetation phenology monitoring and modeling:a comprehensive review

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Geo-Spatial Information Science 2021年第2期24卷 179-200,I0001页

作者： Eric Ariel L salas Agricultural Research Development Program(ARDP) Central State UniversityWilberforceUSA

Researchers continually demonstrated through published literature how LiDAR could create unparalleled measurements of ecosystem structure and forest *** are a number of studies conducted utilizing waveform LiDAR products for terrestrial monitoring,but those that deal specifically with the assessment of space-borne waveform LiDAR for monitoring and modeling of phenology is very *** review highlights the waveform LiDAR system and looks into satellite sensors that could link waveform LiDAR and vegetation phenology,such as the proposed NASA’s Global Ecosystem Dynamics Investigation(GEDI)and the Japanese Experimental Module(JEM)-borne LiDAR sensor named MOLI(Multi-footprint Observation LIDAR and Imager).Further,this work examines the richness and utility of the waveform returns and proposes a spline-function-derived model that could be exploited for estimating the leaf-shooting *** new approach may be utilized for ecosystem-level phenological studies.

关键词： Ecosystems gedi moli phenology vegetation modeling waveform LiDAR

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Y-chromosome Peruvian origin of the 500-year-old Inca child mummy sacrificed in Cerro Aconcagua (Argentina)

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Science Bulletin 2018年第22期63卷 1457-1459页

作者： Antonio salas Laura Catelli Jacobo Pardo-Seco Alberto Gomez-Carballa Federico Martinon-Torres Joaquin Roberto-Barcena carlos Vullo Unidade de Xenetica Instituto de Ciencias ForensesFacultade de MedicinaUniversidade de Santiago de Compostela (USC)and GenPoB Research GroupInstituto de Investigaciones Sanitarias (IDIS)Hospital Clinico Universitario de Santiago (SERGAS)GaliciaSpain Equipo Argentino de Antropologia Forense Independencia 644-3AEdif.EME1CordobaArgentina Translational Pediatrics and Infectious Diseases Hospital Clinico Universitario de SantiagoSantiago de CompostelaSpain GENVIP Research Group (***) Instituto de Investigacion Sanitaria de SantiagoGaliciaSpain Instituto Etnologico de la Universidad Nacional de Cuyo (UNC) MendozaArgentina

A frozen mummy was found in Cerro Aconcagua (Argentina)in 1985(Fig.1a-c).Archaeologists identified this mummy as a seven-year-old Inca sacrifice victim living at the time of the Inca Civilization about 500years ago [1].The child was sacrificed following an Incan ritual known as *** complete mitochondrial DNA (mtDNA) genome of this mummy was recently analyzed in Gomez-Carballa et al.[2].This mitogenome belongs to a new sub-branch of the Native American phylogeny named C1bi dated to approximately 14 thousand years ago (loja).Information retrieved from a large database of mtDNA profiles indicated the existence of a few closely related haplotypes in Peru (including one haplotype retrieved from ancient DNA of an individual belonging to the Wari Empire)and the Aymaras from *** these data suggested a Peruvian Inca origin for this C1bi haplotype,in good agreement with archaeological reports [1].

关键词：木乃伊儿童

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Synthesis and Characterization of Green Potassium Nanoparticles from Sideroxylon Capiri and Evaluation of Their Potential Antimicrobial

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Journal of Renewable Materials 2021年第10期9卷 1699-1706页

作者： Judith Constantino-Alcazar Miguel Abud-Archila Benjamín Valdez-salas Federico Gutierrez-Miceli carlos Ceceña-Duran Blanca López-Valenzuela Daniel Gonzalez-Mendoza Tecnológico Nacional de México Instituto Tecnológico de Tuxtla GutiérrezTuxtlaGutiérrezC.P.03940México Instituto de Ciencias Agrícolas de la Universidad Autónoma de Baja California(ICA-UABC) Ejido Nuevo LeónC.P.21705México Instituto de Ingeniería de la Universidad Autónoma de Baja California Mexicali21100México

In the present study,the green synthesis of potassium nanoparticles(K-NPs)was assessed using aqueous extract of Sideroxylon *** potassium nanoparticles were analyzed by UV-visible spectroscopic techniques,X-ray spectrometers of energy dispersive(SEM-EDS)and dynamic light *** results showed high values at 3.5 keV confirming the formation of potassium nanoparticles and the SEM analysis showed an agglomerated particles size between 360 to 200 nm with a spherical *** K-NPs showed an effective antibacterial activity against the test organisms mainly with Bacillus cereus,Enterobacter aerogenes,Fusarium solani and Botrytis *** further studies about nanotoxicity of K-NPs are needed to confirm their potential in the control of the pathogen microorganisms under field conditions.

关键词： Antimicrobial effect green synthesis Sideroxylon capiri biocontrol

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Rapid-onset antidepressant efficacy of glutamatergic system modulators:The neural plasticity hypothesis of depression

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Neuroscience Bulletin 2015年第1期31卷 75-86页

作者： Jing Wang Liang Jing Juan-carlos Toledo-salas Lin Xu Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences and Yunnan Province Kunming Institute of Zoology KIZ/CUHK Joint Laboratory of Bioresources and Molecular Research in Common Diseases Kunming Institute of ZoologyChinese Academy of Sciences Kunming College of Life Science University of the Chinese Academy of Sciences

Depression is a devastating psychiatric disorder widely attributed to defi cient monoaminergic signaling in the central nervous system. However,most clinical antidepressants enhance monoaminergic neurotransmission with little delay but require 4-8 weeks to reach therapeutic efficacy,a paradox suggesting that the monoaminergic hypothesis of depression is an oversimplifi cation. In contrast to the antidepressants targeting the monoaminergic system,a single dose of the N-methyl-D-aspartate receptor（NMDAR） antagonist ketamine produces rapid（within 2 h） and sustained（over 7 days） antidepressant effi cacy in treatment-resistant patients. Glutamatergic transmission mediated by NMDARs is critical for experience-dependent synaptic plasticity and learning,processes that can be modifi ed indirectly by the monoaminergic system. To better understand the mechanisms of action of the new antidepressants like ketamine,we review and compare the monoaminergic and glutamatergic antidepressants,with emphasis on neural plasticity. The pathogenesis of depression may involve maladaptive neural plasticity in glutamatergic circuits that may serve as a new class of targets to produce rapid antidepressant effects.

关键词： depression stress neural plasticity glutamatergic transmission monoamine-based antidepressant ketamine

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Analytical approximations to a generalized forced damped complex Duffing oscillator:multiple scales method and KBM approach

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Communications in Theoretical Physics 2023年第2期75卷 18-27页

作者： Weaam Alhejaili Alvaro H salas S A El-Tantawy Department of Mathematical Sciences College of SciencePrincess Nourah bint Abdulrahman UniversityP.O.Box 84428Riyadh 11671Saudi Arabia Department of Mathematics and Statistics Universidad Nacional de ColombiaFIZMAKO Research GroupColombia Department of Physics Faculty of SciencePort Said UniversityPort Said 42521Egypt Research Center for Physics(RCP) Department of PhysicsFaculty of Science and ArtsAl-MikhwahAl-Baha UniversitySaudi Arabia

In this investigation,some different approaches are implemented for analyzing a generalized forced damped complex Duffing oscillator,including the hybrid homotopy perturbation method(H-HPM),which is sometimes called the Krylov-Bogoliubov-Mitropolsky(KBM)method and the multiple scales method(MSM).All mentioned methods are applied to obtain some accurate and stable approximations to the proposed problem without decoupling the original *** obtained approximations are discussed graphically using different numerical values to the relevant ***,all obtained approximate solutions are compared with the 4thorder Runge-Kutta(RK4)numerical *** maximum residual distance error(MRDE)is also estimated,in order to verify the high accuracy of the obtained analytic approximations.

关键词： complex Duffing oscillators forced damped complex oscillator multiple scales method KBM method

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Chiral Symmetry Breaking for Fermions Charged under Large Lie Groups

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Communications in Theoretical Physics 2019年第4期71卷 410-416页

作者： Felipe J.Llanes-Estrada Alexandre salas-Bernardez Depto.Fisica Teorica Universidad Complutense de Madrid

We reexamine the dynamical generation of mass for fermions charged under various Lie groups with equal charge and mass at a high Grand Uni?cation scale, extending the Renormalization Group Equations in the perturbativ... 详细信息

关键词： standard model group running fermion mass grand unification scale

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Site Characterization Index for Continuous Power Quality Monitoring Based on Higher-order Statistics

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Journal of Modern Power Systems and Clean Energy 2022年第1期10卷 222-231页

作者： Olivia Florencias-Oliveros Juan-José González-de-la-Rosa Jose-María Sierra-Fernández Agustín Agüera-Pérez Manuel-Jesús Espinosa-Gavira José-carlos Palomares-salas Department of Automation Engineering ElectronicsArchitecture and Computers NetworksResearch Group TIC168Higher Polytechnic SchoolUniversity of CádizAlgeciras 11202Spain

The high penetration of distributed generation(DG)has set up a challenge for energy management and consequently for the monitoring and assessment of power quality(PQ).Besides,there are new types of disturbances owing to the uncontrolled connections of non-linear *** stochastic behaviour triggers the need for new holistic indicators which also deal with big data of PQ in terms of compression and scalability so as to extract the useful information regarding different network states and the prevailing PQ disturbances for future risk assessment and energy management *** and continuous monitoring would guarantee the report to claim for damages and to assess the risk of PQ *** this context,we propose a measurement method that postulates the use of two-dimensional(2D)diagrams based on higher-order statistics(HOSs)and a previous voltage quality index that assesses the voltage supply waveform in a continous monitoring *** suitable for both PQ and reliability applications,the results conclude that the inclusion of HOS measurements in the industrial metrological reports helps characterize the deviations of the voltage supply waveform,extracting the individual customers’pattern fingerprint,and compressing the data from both time and spatial *** method allows a continuous and robust performance needed in the SG ***,the method can be used by an average consumer as a probabilistic method to assess the risk of PQ deviations in site characterization.

关键词： Continuous statistical monitoring big data data compression higher-order statistics(HOSs) power quality(PQ)

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