Search results for "Spar"

showing 10 items of 1739 documents

Outdoor flat-panel membrane photobioreactor to treat the effluent of an anaerobic membrane bioreactor. Influence of operating, design, and environmen…

2018

[EN] As microalgae have the ability to simultaneously remove nutrients from wastewater streams while producing valuable biomass, microalgae-based wastewater treatment is a win-win strategy. Although recent advances have been made in this field in lab conditions, the transition to outdoor conditions on an industrial scale must be further investigated. In this work an outdoor pilot-scale membrane photobioreactor plant was operated for tertiary sewage treatment. The effects of different parameters on microalgae performance were studied including: temperature, light irradiance (solar and artificial irradiance), hydraulic retention time (HRT), biomass retention time (BRT), air sparging system an…

INGENIERIA HIDRAULICAEnvironmental EngineeringHydraulic retention timeNitrogen0208 environmental biotechnologyPhotobioreactorBiomass02 engineering and technologyWastewater treatmentWastewater010501 environmental sciencesMembrane photobioreactor01 natural sciencesWater PurificationPhotobioreactorsMicroalgaeEffluentTECNOLOGIA DEL MEDIO AMBIENTE0105 earth and related environmental sciencesWater Science and TechnologyPilot plantOutdoorPhosphorusEquipment DesignPulp and paper industry020801 environmental engineeringFlat-panelWastewaterVolatile suspended solidsEnvironmental scienceSewage treatmentAir sparging
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Factors that affect the permeability of commercial hollow-fibre membranes in a submerged anaerobic MBR (HF-SAnMBR) system

2013

A demonstration plant with two commercial HF ultrafiltration membrane modules (PURON (R), Koch Membrane Systems, PUR-PSH31) was operated with urban wastewater. The effect of the main operating variables on membrane performance at sub-critical and supracritical filtration conditions was tested. The physical operating variables that affected membrane performance most were gas sparging intensity and back-flush (BF) frequency. Indeed, low gas sparging intensities (around 0.23 Nm(3) h(-1) m(-2)) and low BF frequencies (30s back-flush for every 10 basic filtration relaxation cycles) were enough to enable membranes to be operated sub-critically even when levels of mixed liquor total solids were hi…

INGENIERIA HIDRAULICAEnvironmental EngineeringMembrane permeabilityAnalytical chemistryUltrafiltrationBack-flush frequencyPermeabilityBioreactorsHollow-fibre membranesBioreactorAnaerobiosisBiogas spargingWaste Management and DisposalSpargingTECNOLOGIA DEL MEDIO AMBIENTEWater Science and TechnologyCivil and Structural EngineeringSubmerged anaerobic membrane bioreactorChromatographyFoulingChemistryEcological ModelingCommercialMembranes ArtificialPollutionAnaerobic digestionMembraneMembrane permeabilityWastewaterPermeability (electromagnetism)
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A filtration model applied to submerged anaerobic MBRs (SAnMBRs)

2013

The aim of this study was to develop a model able to correctly reproduce the filtration process of submerged anaerobic MBRs (SAnMBRs). The proposed model was calibrated and validated in a SAnMBR demonstration plant fitted with industrial-scale hollow-fibre membranes. Three suspended components were contemplated in the model: total solids concentration; dry mass of cake on the membrane surface; and dry mass of irreversible fouling on the membrane surface. The model addressed the following physical processes: the build-up and compression of the cake layer during filtration; cake layer removal using biogas sparging to scour the membrane; cake layer removal during back-flushing; and the consoli…

INGENIERIA HIDRAULICAIndustrial-scale hollow-fibre membranesFiltration modelFoulingChemistryEnvironmental engineeringFiltration and SeparationTotal dissolved solidsPulp and paper industryBiochemistryResistance-in-series-basedMembraneBiogasSubmerged anaerobic MBRGeneral Materials ScienceLayer removalPhysical and Theoretical ChemistryMembrane surfaceAnaerobic exerciseSpargingTECNOLOGIA DEL MEDIO AMBIENTE
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Advanced control system for optimal filtration in submerged anaerobic MBRs (SAnMBRs)

2013

The main aim of this study was to develop an advanced controller to optimise filtration in submerged anaerobic MBRs (SAnMBRs). The proposed controller was developed, calibrated and validated in a SAnMBR demonstration plant fitted with industrial-scale hollow-fibre membranes with variable influent flow and load. This 2-layer control system is designed for membranes operating sub-critically and features a lower layer (on/off and PID controllers) and an upper layer (knowledge-based controller). The upper layer consists of a MIMO (multiple-input-multiple-output) control structure that regulates the gas sparging for membrane scouring and the frequency of physical cleaning (ventilation and back f…

INGENIERIA HIDRAULICAIndustrial-scale hollow-fibre membranesFoulingKnowledge-based controllerEnvironmental engineeringPID controllerFiltration and SeparationEnergy savingsBiochemistrylaw.inventionAdvanced control systemMembraneControl theorylawControl systemSubmerged anaerobic MBRVentilation (architecture)Environmental scienceGeneral Materials SciencePhysical and Theoretical ChemistrySpargingFiltrationTECNOLOGIA DEL MEDIO AMBIENTE
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PREPARATION AND IN VITRO CHARACTERIZATION OF NEW HYDROGELS BASED ON INULIN AND ALPHA,BETA-POLYASPARTYLHYDRAZIDE FOR COLONIC DRUG DELIVERY

2008

INULIN POLYASPARTYLHYDRAZIDE DRUG RELEASE HYDROGELS
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Model Identification of a Network as Compressing Sensing

2013

In many applications, it is important to derive information about the topology and the internal connections of dynamical systems interacting together. Examples can be found in fields as diverse as Economics, Neuroscience and Biochemistry. The paper deals with the problem of deriving a descriptive model of a network, collecting the node outputs as time series with no use of a priori insight on the topology, and unveiling an unknown structure as the estimate of a "sparse Wiener filter". A geometric interpretation of the problem in a pre-Hilbert space for wide-sense stochastic processes is provided. We cast the problem as the optimization of a cost function where a set of parameters are used t…

IdentificationReduced modelTheoretical computer scienceGeneral Computer ScienceDynamical systems theoryComputer scienceNetworkTopology (electrical circuits)Dynamical Systems (math.DS)Systems and Control (eess.SY)Set (abstract data type)symbols.namesakeFOS: MathematicsFOS: Electrical engineering electronic engineering information engineeringElectrical and Electronic EngineeringMathematics - Dynamical SystemsMathematics - Optimization and ControlMathematics - General TopologySparsificationMechanical EngineeringWiener filterSystem identificationGeneral Topology (math.GN)Function (mathematics)Compressive sensingIdentification (information)Compressed sensingControl and Systems EngineeringOptimization and Control (math.OC)symbolsIdentification; Sparsification; Reduced models; Networks; Compressive sensingComputer Science - Systems and Control
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Zāļu blakusparādību identificēšanā Latvijas administratīvajos datos

2022

Maģistra darba tēma ir zāļu blakusparādību (ZBP) identificēšana Latvijas administratīvajos datos. Pilnīga datu apkopošana par klīniskajā praksē novērotajām ZBP ir svarīgs instruments zāļu pēcreģistrācijas uzraudzībā, zāļu regulācijā, kā arī pētījumos par zāļu drošumu, efektivitāti un pacientu drošību. Latvijā, lai arī ir iespējams veikt zāļu blakusparādības ziņošanu, šādu gadījumu Zāļu valsts aģentūras (ZVA) pieejamos datos ir ļoti maz, kā arī iegūtie dati netiek analizēti. Darba mērķis bija analizēt esošo Latvijas pasīvo ZBP ziņošanas sistēmu un identificēt iespējas izmantot administratīvos datus ZBP identificēšanā, kā arī kopumā aktualizēt šo tēmu Latvijā. Darba uzdevumi bija Latvijas Sli…

IdentificēšanaSabiedrības veselībaZāļu blakusparādībasDiagnožu kodiAdministratīvie dati
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Low Density Lipoprotein Receptor-related Protein (LRP) Interacts with Presenilin 1 and Is a Competitive Substrate of the Amyloid Precursor Protein (A…

2005

Presenilin 1 (PS1) is a critical component of the gamma-secretase complex, which is involved in the cleavage of several substrates including the amyloid precursor protein (APP) and the Notch receptor. Recently, the low density receptor-related protein (LRP) has been shown to be cleaved by a gamma-secretase-like activity. We postulated that LRP may interact with PS1 and tested its role as a competitive substrate for gamma-secretase. In this report we show that LRP colocalizes and interacts with endogenous PS1 using coimmunoprecipitation and fluorescence lifetime imaging microscopy. In addition, we found that gamma-secretase active site inhibitors do not disrupt the interaction between LRP an…

ImmunoprecipitationNotch signaling pathwayMice TransgenicBinding CompetitiveBiochemistryPresenilinCell LineSubstrate SpecificityRats Sprague-DawleyAmyloid beta-Protein PrecursorMiceEndopeptidasesmental disordersPresenilin-1Amyloid precursor proteinAnimalsAspartic Acid EndopeptidasesHumansBinding siteMolecular BiologyBrain ChemistryBinding SitesbiologyChemistryMembrane ProteinsCell BiologyRatsnervous system diseasesCell biologyTransmembrane domainBiochemistryMultiprotein ComplexesLDL receptorbiology.proteinlipids (amino acids peptides and proteins)Amyloid Precursor Protein SecretasesAmyloid precursor protein secretaseLow Density Lipoprotein Receptor-Related Protein-1Journal of Biological Chemistry
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Challenges and Opportunities using MultiChain for Real Estate

2019

The real estate market involves multiple untrusted actors with contrasting objectives. We propose REchain, a blockchain-based platform for real estate, which provides benefits to all actors in terms of transparency, trust, immutability, and traceability. REchain architecture handles real estate data through well-defined workflows that leverage the MultiChain platform. REchain changes the real estate market enabling direct transactions without intermediaries, and providing new mechanisms for negotiating the purchase conditions. This paper refutes the misleading idea of using blockchains for solving generic problems as blockchain platforms have peculiar features that make them suitable for sp…

ImmutabilityTraceabilitySettore ING-INF/03 - TelecomunicazioniComputer scienceTransparency (market)media_common.quotation_subject020206 networking & telecommunicationsReal estate02 engineering and technologyData scienceNegotiationIntermediaryWorkflow0202 electrical engineering electronic engineering information engineeringBlockchain smart filter smart contract real estate020201 artificial intelligence & image processingArchitecturemedia_common2019 IEEE International Black Sea Conference on Communications and Networking (BlackSeaCom)
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Open strategizing on social media: A process model of emotional mechanisms and outcomes from un-orchestrated participation  

2023

This study extends the discussion on open strategizing by following the development of unlimited participation in an ex-ante city merger case where participation was not orchestrated. The findings unravel how the aggregation of emotional expressions on social media results in an escalating conflict, and initiates attempts to mitigate grounded in decision-makers’ reflexiveness of social becoming(s). We theorize three emotional mechanisms – acceleration of emotional interaction, reinforcement of hostility as a discursive norm, and emotional empowerment – and outcomes originating from uncontrolled dynamics of inclusion and transparency. As such, we theorize open strategy as emerging organicall…

Inclusionjulkinen keskusteluOpen strategizingstrategiatyöStrategy and ManagementGeography Planning and Developmentsosiaalinen mediaEmotional expressionskuntaliitoksetTransparencydiskurssianalyysiläpinäkyvyysSocial mediaosallistaminenkunnattunteetFinance
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