Search results for: F. Garofalo

Items from 1 to 20 out of 27 results

chapter

Robust model tracking for a class of singularly perturbed nonlinear systems via composite control

F. Garofalo, L. Glielmo

Lecture Notes in Control and Information Sciences > Modeling and Control of Systems > 89-110

article

InterPACIFIC project: Comparison of invasive and non-invasive methods for seismic site characterization. Part I: Intra-comparison of surface wave methods

F. Garofalo, S. Foti, F. Hollender, P.Y. Bard, more

Soil Dynamics and Earthquake Engineering > 2016 > 82 > C > 222-240

The main scope of the InterPACIFIC (Intercomparison of methods for site parameter and velocity profile characterization) project is to assess the reliability of in-hole and surface-wave methods, used for estimating shear wave velocity. Three test-sites with different subsurface conditions were chosen: a soft soil, a stiff soil and a rock outcrop. This paper reports the surface-wave methods results...

article

InterPACIFIC project: Comparison of invasive and non-invasive methods for seismic site characterization. Part II: Inter-comparison between surface-wave and borehole methods

F. Garofalo, S. Foti, F. Hollender, P.Y. Bard, more

Soil Dynamics and Earthquake Engineering > 2016 > 82 > C > 241-254

The InterPACIFIC project was aimed at assessing the reliability, resolution, and variability of geophysical methods in estimating the shear-wave velocity profile for seismic ground response analyses. Three different subsoil conditions, which can be broadly defined as soft-soil, stiff-soil, and hard-rock, were investigated. At each site, several participants performed and interpreted invasive measurements...

article

Signal molecule changes in the gills and lungs of the African lungfish Protopterus annectens, during the maintenance and arousal phases of aestivation

F. Garofalo, D. Amelio, J.M. Icardo, S.F. Chew, more

Nitric Oxide > 2015 > 44 > Complete > 71-80

African lungfishes are obligate air breathers, with reduced gills and pulmonary breathing throughout their life. During the dry season they aestivate on land, with the collapse of secondary lamellae of their gills and the establishment of an exclusive aerial ventilation through the vascularization and expansion of their lungs. To date, the mechanisms underlining the respiratory organ remodeling in...

article

Optimal Design of Silicon-based Chips for Piezo-induced Ultrasound Resonances in Embedded Microchannels

F. Garofalo, T. Laurell, H. Bruus

Physics Procedia > 2015 > 70 > Complete > 50-54

We present a variational formulation of the governing equations and introduce global indicators to describe the behavior of acoustofluidic devices driven at resonance frequencies by means of a piezoelectric transducer. The individuation of the correct Lagrangian densities for the different parts constituting the device (the piezo transducer, the silicon walls, the fluid-filled microchannel, and the...

article

Analytical characterization of particle kinematics and transverse dispersion in free-flow acoustophoretic devices

F. Garofalo

Microfluidics and Nanofluidics > 2015 > 18 > 3 > 367-382

The overdamped dynamics of particles dragged by a parallel flow in a straight micro-channel in the presence of a transverse acoustophoretic force is investigated. Analytical solutions are presented in the case of plug, shear, or Poiseuille flow velocity profile. Two regimes of particle dynamics are observed, namely an early regime dominated by the local stream-wise velocity and a later regime governed...

article

Short communication: Effects of systemic treatment with penethamate hydriodide on udder health and milk yields in dry primiparous Mediterranean buffaloes (Bubalus bubalis)

J. Guccione, A. Pesce, M. Pascale, N. Tommasini, more

Journal of Dairy Science > 2014 > 97 > 4 > 2219-2225

The effects of penethamate hydriodide (Mamyzin, Boehringer Ingelheim, Ingelheim, Germany) on udder health and milk yields were evaluated in primiparous Mediterranean buffaloes (Bubalus bubalis). An intramuscular administration of 10 million international units was performed in 20 buffaloes at 7 d precalving (treatment group; TG), and 20 animals were enrolled as the control group (CG). Evening milk...

article

Nitric oxide synthase-dependent “On/Off” switch and apoptosis in freshwater and aestivating lungfish, Protopterus annectens: Skeletal muscle versus cardiac muscle

D. Amelio, F. Garofalo, W.P. Wong, S.F. Chew, more

Nitric Oxide > 2013 > 32 > Complete > 1-12

African lungfishes (Protopterus spp.) are obligate air breathers which enter in a prolonged torpor (aestivation) in association with metabolic depression, and biochemical and morpho-functional readjustments during the dry season. During aestivation, the lungfish heart continues to pump, while the skeletal muscle stops to function but can immediately contract during arousal. Currently, nothing is known...

article

Effects of temperature on the nitric oxide-dependent modulation of the Frank–Starling mechanism: the fish heart as a case study

D. Amelio, F. Garofalo, C. Capria, B. Tota, more

Comparative Biochemistry and Physiology, Part A > 2013 > 164 > 2 > 356-362

The Frank–Starling law is a fundamental property of the vertebrate myocardium which allows, when the end-diastolic volume increases, that the consequent stretch of the myocardial fibers generates a more forceful contraction. It has been shown that in the eel (Anguilla anguilla) heart, nitric oxide (NO) exerts a direct myocardial relaxant effect, increasing the sensitivity of the Frank–Starling response...

article

Morpho-functional characterization of the goldfish (Carassius auratus L.) heart

F. Garofalo, S. Imbrogno, B. Tota, D. Amelio

Comparative Biochemistry and Physiology, Part A > 2012 > 163 > 2 > 215-222

Using morphological and physiological approaches we provided, for the first time, a structural and functional characterization of Carassius auratus L. heart. Besides to the classical four chambers, i.e. sinus venosus, atrium, ventricle, bulbus, we described two distinct structures corresponding to the atrio-ventricular (AV) region and the conus arteriosus. The atrium is very large and highly trabeculated;...

article

On the modelling of time-interleaved sequential lamination micromixers

F. Garofalo, M. Giona

Microfluidics and Nanofluidics > 2012 > 12 > 1-4 > 175-187

We develop a novel and simple theoretical model of time-interleaved sequential lamination micromixers that improves the model proposed by Nguyen and coworkers (Microfluid Nanofluid 1:373–375, 2005a, Lab Chip 5:1320–1326, b, J Phys Conf Ser 34:136–141, 2006) based on the Taylor–Aris dispersion theory. The Nguyen model takes into account the non uniform structure of the velocity profile through an effective...

chapter

Evolving Topologies for Network Synchronization

P. DeLellis, M. diBernardo, F. Garofalo, M. Porfiri

2010 Complexity in Engineering > 115 - 117

2010 Complexity in Engineering (COMPENG 2010)

In this paper we describe possible decentralized strategies to adaptively synchronize complex networks of oscillators. Firstly, we review two adaptation strategies for the coupling gains in the network, and then we describe a completely decentralized strategy to select adaptively the network edges. The report is complemented by a representative numerical example.

article

Spectral characterization of static mixers. The S‐shaped micromixer as a case study

F. Garofalo, A. Adrover, S. Cerbelli, M. Giona

AIChE Journal > 56 > 2 > 318 - 335

We investigate the steady‐state performance of a planar micromixer composed of several S‐shaped units. Mixing efficiency is quantified by the decay of the scalar variance downstream the device for generic feeding conditions. We discuss how this decay is controlled by the spectral properties of the advection‐diffusion Floquet operator, $ \cal F $, that maps a generic scalar profile at the inlet of...

article

Evolution of Complex Networks via Edge Snapping

P DeLellis, M di Bernardo, F Garofalo, M Porfiri

IEEE Transactions on Circuits and Systems I: Regular Papers > 2010 > 57 > 8 > 2132 - 2143

In this paper, we present a novel adaptive strategy for consensus and synchronization of complex networks. The strategy is inspired by bistable phenomena that are observed in a variety of mechanical systems. The novelty is that the adaptation involves the topology of the network itself rather than its coupling gains. In particular, we model the evolution of each coupling gain as a second order dynamical...

article

The Antarctic hemoglobinless icefish, fifty five years later: A unique cardiocirculatory interplay of disaptation and phenotypic plasticity

F. Garofalo, D. Pellegrino, D. Amelio, B. Tota

Comparative Biochemistry and Physiology, Part A > 2009 > 154 > 1 > 10-28

The teleostean Channichthyidae (icefish), endemic stenotherms of the Antarctic waters, perennially at or near freezing, represent a unique example of disaptation among adult vertebrates for their loss of functional traits, particularly hemoglobin (Hb) and, in some species, cardiac myoglobin (Mb), once considered to be essential-life oxygen-binding chromoproteins. Conceivably, this stably frigid, oxygen-rich...

article

Spectral characterization of mixing properties of annular MHD micromixers

S. Cerbelli, A. Adrover, F. Garofalo, M. Giona

Microfluidics and Nanofluidics > 2009 > 6 > 6 > 747-761

We develop a quantitative analysis of mixing regimes in an annular MHD-driven micromixer recently proposed by Gleeson et al. as a prototype for biomolecular applications. The analysis is based on the spectral properties of the advection–diffusion operator, with specific focus on the dependence of the dominant eigenvalue–eigenfunction on the Peclet number and on the system geometry. A theoretical prediction...

article

Steady-state performance of an infinitely fast reaction in a three-dimensional open Stokes flow

S. Cerbelli, F. Garofalo, M. Giona

Chemical Engineering Science > 2008 > 63 > 17 > 4396-4411

We investigate the steady-state performance of a single irreversible mixing-controlled reaction between segregated reactant streams entering the annular gap between coaxial cylinders that can rotate independently. The three-dimensional Stokes flow results from the superposition of a pressure-driven Poiseuille flow along the mixer axis, and a cross-sectional Couette flow generated by the steady rotation...

article

cGMP-independent nitric oxide modulation of the Frank–Starling response in the eel Anguilla anguilla

S. Imbrogno, C. Adamo, F. Garofalo, M.C. Cerra, more

Comparative Biochemistry and Physiology, Part A > 2008 > 150 > 3 Supplement > S127-S128

chapter

Vertex-based adaptive synchronization of complex networks

P. De Lellis, M. di Bernardo, F. Garofalo

2008 IEEE International Symposium on Circuits and Systems > 2526 - 2529

2008 IEEE International Symposium on Circuits and Systems - ISCAS 2008

This paper is concerned with the analysis of the synchronization of networks of nonlinear oscillators through an innovative adaptive strategy. In particular, time-varying feedback coupling gains are considered, whose derivative is made directly dependent on the local synchronization error at each vertex in the network. It is shown that, under appropriate conditions, the strategy is indeed successful...

chapter

Robust output feedback active queue management control in TCP networks

S. Manfredi, M. di Bernardo, F. Garofalo

2004 43rd IEEE Conference on Decision and Control (CDC) (IEEE Cat. No.4CH 37601) > 1 > 1004 - 1009 Vol.1

2004 43rd IEEE Conference on Decision and Control (CDC)

This paper is concerned with the design of improved AQM control schemes. An appropriate robust H/sup /spl infin// controller for time-delay systems is proposed and hence used to design a suitable AQM control scheme. A robust observer is used to estimate online the transmission window resulting in a novel output feedback stabilization scheme for AQM. The resulting control law is first validated and...

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Comparative Biochemistry and Physiology, Part A (4)
Microfluidics and Nanofluidics (3)
American Control Conference (2)
Nitric Oxide (2)
Soil Dynamics and Earthquake Engineering (2)
AIChE Journal (1)
Chemical Engineering Science (1)
Environmental Science & Technology (1)
IEEE Transactions on Circuits and Systems I: Regular Papers (1)
IEE Proceedings D - Control Theory and Applications (1)
Journal of Dairy Science (1)
Physics Procedia (1)
1986 25th IEEE Conference on Decision and Control (1)
1989 American Control Conference (1)
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INFONA - science communication portal

Search results for: F. Garofalo

Robust model tracking for a class of singularly perturbed nonlinear systems via composite control

InterPACIFIC project: Comparison of invasive and non-invasive methods for seismic site characterization. Part I: Intra-comparison of surface wave methods

InterPACIFIC project: Comparison of invasive and non-invasive methods for seismic site characterization. Part II: Inter-comparison between surface-wave and borehole methods

Signal molecule changes in the gills and lungs of the African lungfish Protopterus annectens, during the maintenance and arousal phases of aestivation

Optimal Design of Silicon-based Chips for Piezo-induced Ultrasound Resonances in Embedded Microchannels

Analytical characterization of particle kinematics and transverse dispersion in free-flow acoustophoretic devices

Short communication: Effects of systemic treatment with penethamate hydriodide on udder health and milk yields in dry primiparous Mediterranean buffaloes (Bubalus bubalis)

Nitric oxide synthase-dependent “On/Off” switch and apoptosis in freshwater and aestivating lungfish, Protopterus annectens: Skeletal muscle versus cardiac muscle

Effects of temperature on the nitric oxide-dependent modulation of the Frank–Starling mechanism: the fish heart as a case study

Morpho-functional characterization of the goldfish (Carassius auratus L.) heart

On the modelling of time-interleaved sequential lamination micromixers

Evolving Topologies for Network Synchronization

Spectral characterization of static mixers. The S‐shaped micromixer as a case study

Evolution of Complex Networks via Edge Snapping

The Antarctic hemoglobinless icefish, fifty five years later: A unique cardiocirculatory interplay of disaptation and phenotypic plasticity

Spectral characterization of mixing properties of annular MHD micromixers

Steady-state performance of an infinitely fast reaction in a three-dimensional open Stokes flow

cGMP-independent nitric oxide modulation of the Frank–Starling response in the eel Anguilla anguilla

Vertex-based adaptive synchronization of complex networks

Robust output feedback active queue management control in TCP networks

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