Search results for "Biological Systems"

showing 4 items of 14 documents

Evidence of stochastic resonance in the mating behavior of Nezara viridula (L.)

2008

We investigate the role of the noise in the mating behavior between individuals of Nezara viridula (L.), by analyzing the temporal and spectral features of the non-pulsed type female calling song emitted by single individuals. We have measured the threshold level for the signal detection, by performing experiments with the calling signal at different intensities and analyzing the insect response by directionality tests performed on a group of male individuals. By using a sub-threshold signal and an acoustic Gaussian noise source, we have investigated the insect response for different levels of noise, finding behavioral activation for suitable noise intensities. In particular, the percentage…

Stochastic resonanceFOS: Physical sciencesNoise in biological systemQuantitative Biology - Quantitative MethodsSignalsymbols.namesakeDirectionalityDetection theoryPhysics - Biological PhysicsQuantitative Methods (q-bio.QM)Biophysical mechanisms of interactionPhysicsFluctuation phenomena random processes noise and Brownian motionbiologyNoise (signal processing)Noise in biological systems; Biophysical mechanisms of interaction; Fluctuation phenomena random processes noise and Brownian motionCondensed Matter Physicsbiology.organism_classificationSettore FIS/07 - Fisica Applicata(Beni Culturali Ambientali Biol.e Medicin)Electronic Optical and Magnetic MaterialsBiological Physics (physics.bio-ph)Gaussian noiseNezara viridulaFOS: Biological sciencessymbolsThreshold modelBiological system
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Smart Sustainable Development Approach and its Implementation in Engineering Organizations

2014

This paper explores the concept of sustainability in engineering systems and proposes a smart conceptual framework for engineering organization development. Sustainability is a critically complex goal for enterprise activity and development. Sustainability in the engineering area requires a comprehensive and continue approach because, a) engineering activities are ubiquitous in society, b) of the high importance of engineering applications in the development of the companies and of the world, and c) technological support becomes imminent in a dynamic economic environment and sustained in large part by technological advances. This paper aims to provide to the engineering environment a smart …

Sustainable developmentEngineeringBiological systems engineeringRequirements engineeringbusiness.industryGeneral MedicineHealth systems engineeringConstruction engineeringEngineering managementConceptual frameworkSustainabilitySystem of systems engineeringSustainability organizationsbusinessApplied Mechanics and Materials
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Ovine Carotid Artery-Derived Cells as an Optimized Supportive Cell Layer in 2-D Capillary Network Assays

2014

PLoS one 9(3), e91664 (2014). doi:10.1371/journal.pone.0091664

Vascular Endothelial Growth Factor APathologyCellBecaplerminlcsh:MedicineCardiovascularUmbilical veinUmbilical CordDrug DiscoveryMolecular Cell BiologyBiological Systems EngineeringMyocyteCardiovascular Imaginglcsh:ScienceMultidisciplinaryProto-Oncogene Proteins c-sisAnimal ModelsFlow CytometryEndothelial stem cellBevacizumabmedicine.anatomical_structureCarotid ArteriesMonoclonalMedicineImmunohistochemical AnalysisResearch ArticleBiotechnologymedicine.medical_specialtyCell typeDrugs and DevicesDrug Research and DevelopmentMyocytes Smooth MuscleImmunologyBiomedical EngineeringBioengineeringBiologyAntibodies Monoclonal HumanizedCell LineModel OrganismsVascular Biologymedicine.arterymedicineAnimalsHumansBiologySheeplcsh:REndothelial CellsFeeder CellsUmbilical arteryMolecular biologyVascular Endothelial Growth Factor Receptor-2Coculture TechniquesCapillariesCell cultureImmunologic Techniqueslcsh:QCytometry
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The Advances and Challenges of Liposome-Assisted Drug Release in the Presence of Serum Albumin Molecules: The Influence of Surrounding pH

2022

The aim of this study is to prepare a liposomal delivery system for 5-methyl-12 (H)-quino[3,4-b]-1,4-benzothiazine chloride (5-MBT) and study the in vitro release characteristics. The release of 5-MBT from a liposomal complex with human serum albumin (HSA) [LDPPC/5-MBT]:HSA was examined using the spectrophotometric method and differential scanning calorimetry (DSC). Electronic paramagnetic resonance was used to assess the influence of the pH of the environment on the conformation of phospholipids, the latter determining the degree of release of the encapsulated compound. The applied mathematical models made it possible to determine the necessary analytical parameters to facilitate the proce…

biological systems; release mechanism; controlled drug delivery; nanoparticlesrelease mechanismembryonic structuresbiological systemsnanoparticlesGeneral Materials Sciencecontrolled drug deliveryMaterials
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