scholarly journals The Paroxysmal Event and Its Deposits

2013 ◽  
pp. 317-329 ◽  
Author(s):  
Marco Pistolesi ◽  
Mauro Rosi ◽  
Laura Pioli ◽  
Alberto Renzulli ◽  
Antonella Bertagnini ◽  
...  
Keyword(s):  
Paroxysmal Event

Spectral and dynamical hints on the time scale of preparation of the 5 April 2003 explosion at Stromboli volcano

2006 ◽  
Vol 43 (1) ◽  
pp. 41-55 ◽  
Author(s):  
Roberto Carniel ◽  
Ramon Ortiz ◽  
Mauro Di Cecca
Keyword(s):  
Seismic Data ◽  
Time Scale ◽  
Material Failure ◽  
Stromboli Volcano ◽  
Forecast Method ◽  
Sector Collapse ◽  
Strombolian Activity ◽  
Dynamical Phase ◽  
Paroxysmal Event ◽  
Sciara Del Fuoco

Stromboli volcano is well known for its continuous strombolian activity. Moreover, the volcano occasionally shows effusive phases, the latest in 1985–1986. On 28 December 2002 Stromboli entered a new effusive phase, accompanied by different paroxysmal events that led to considerable hazards for inhabitants and tourists on the island of Stromboli. On 30 December 2002 a major sector collapse affected the Sciara del Fuoco slope and initiated a tsunami. On 5 April 2003 a powerful explosion, which can be compared in size with the most recent explosion in 1930, covered a large part of the normally tourist accessible summit area with bombs. As this explosion was not forecasted, although the island was by then effectively monitored by a dense deployment of instruments, in this paper, we tackle the problem of highlighting the time scale of preparation of this event and conduct a search for possible precursors. For this purpose, we analyze the seismic data preceding the paroxysm with spectral and dynamical methods, highlighting that this paroxysmal event can be seen as the final result of a dynamical phase that started at least 2.5 h before the event. Therefore, this is the time scale during which the search can and should be made for possible precursors. Moreover, the application of the "material failure forecast" method suggests that this final dynamical phase may be just the final acceleration of a process that was building up for at least several days prior to the event.

scholarly journals Epileptic Seizures Versus Syncope: Pathophysiology and Clinical Approach

2017 ◽  
Vol 2 (1) ◽  
Author(s):  
Marios Charalambous ◽  
Sergio A. Gomes ◽  
Stella Papageorgiou ◽  
Massimo Orioles
Keyword(s):  
Clinical Manifestation ◽  
Brain Function ◽  
Clinical Signs ◽  
Epileptic Seizures ◽  
Original Research ◽  
Clinical Approach ◽  
Event Duration ◽  
Clinical Criteria ◽  
Weak Evidence ◽  
Paroxysmal Event

<p>Generalised epileptic seizures and syncope are two syndromes with similar clinical manifestation and their differentiation can be quite challenging. The aim of this review is to use an evidence-based approach in differentiating these two syndromes through the comprehension of the pathophysiological mechanisms involved and their clinical signs. Both syndromes affect regions of the forebrain and consciousness level, although, different mechanisms are involved. Syncope is a paroxysmal event secondary to a short-term decrease in cerebral perfusion, oxygenation or essential nutrients delivery. Generalised epileptic seizure activity is defined as the clinical manifestation of transient paroxysmal disturbances in brain function secondary to an imbalance between excitatory and inhibitory neurotransmitters. Clinical criteria, including precipitating events, clinical signs preceding, during and following the episodes and event duration, can be used to differentiate the two syndromes. Although these criteria might be useful for the practitioner, definite conclusions should be precluded due to the lack of original research articles and weak evidence on this specific field.</p><p><strong>Application:</strong> The review might be a useful tool for the general practitioner and clinical scientist as it will aid towards the differentiation of two syndromes, i.e. generalised epileptic seizures and syncope, with similar clinical presentation.</p><br /> <img src="https://www.veterinaryevidence.org/rcvskmod/icons/oa-icon.jpg" alt="Open Access" /> <img src="https://www.veterinaryevidence.org/rcvskmod/icons/pr-icon.jpg" alt="Peer Reviewed" />

Nonepileptic paroxysmal event in newborn: A case report

2016 ◽  
Author(s):  
Abdurrahman Avar Özdemir ◽  
Ali Aydın
Keyword(s):  
Case Report ◽  
Paroxysmal Event

scholarly journals UAV survey method to Monitoring and analysing geological hazards: The Case study of mud volcano of Villaggio Santa Barbara, Caltanissetta (Sicily)

2020 ◽  
Author(s):  
Fabio Brighenti ◽  
Francesco Carnemolla ◽  
Danilo Messina ◽  
Giorgio De Guidi
Keyword(s):  
Surface Deformation ◽  
Temporal Frequency ◽  
Point Clouds ◽  
Structural Features ◽  
Mud Volcano ◽  
Survey Method ◽  
Santa Barbara ◽  
Geological Processes ◽  
Paroxysmal Event ◽  
Deformation Processes

Abstract. All active geological processes determine effects on the soil due to different deformation processes: surface uplift and subsidence, shear lineaments with differential kinematics in relation to the source and the soils involved. Among all the active geological processes on Santa Barbara mud volcano (Caltanissetta town, Italy), represents a dangerous site because it caused, on 11 August 2008, a paroxysmal event, which determined severe damages to the infrastructures at around to 2 km the paroxysmal event. The remote sensing of surface deformation now represents a key tool for the evaluation and monitoring of the hazard. The use of unmanned aerial vehicles (UAVs) in contexts of natural danger presents three main steps for risk assessment and monitoring: pre-post event data acquisition, emergency support and monitoring. Here we present a methodology for monitoring deformation processes that may be precursors of paroxysmal events on the Santa Barbara mud volcano. Among the precursors, the lifting and development of structural features are the most important, with dimensions ranging from centimetre to decimetre. Therefore in relation to the magnitudes of the phenomena involved, the objective of this work is (going from the acquisition phase, to the SfM processing chain and the use of the M3C2-PM algorithm for the comparison between point clouds and uncertainty analysis with a statistical approach) the monitoring of deformation processes, with centimetre precision and a temporal frequency of 1–2 months, as precursor indications of hazard.

scholarly journals Epileptic seizure or not? Proportion of correct judgement based only on a video recording of a paroxysmal event

Seizure ◽  
2017 ◽  
Vol 53 ◽  
pp. 26-30 ◽  
Author(s):  
Eszter Nagy ◽  
Alexandra Major ◽  
Nelli Farkas ◽  
Katalin Hollódy
Keyword(s):  
Epileptic Seizure ◽  
Video Recording ◽  
Paroxysmal Event ◽  
Correct Judgement

Relationship between the flank sliding of the South East Crater (Mt. Etna, Italy) and the paroxysmal event of November 16, 2006

2010 ◽  
Vol 72 (10) ◽  
pp. 1179-1190 ◽  
Author(s):  
Carmelo Ferlito ◽  
Marco Viccaro ◽  
Eugenio Nicotra ◽  
Renato Cristofolini
Keyword(s):  
The South ◽  
Paroxysmal Event ◽  
Mt Etna

Management of developmental speech and language disorders. Part 2: acquired conditions

2015 ◽  
Vol 101 (3) ◽  
pp. 278-283 ◽  
Author(s):  
Anne O'Hare
Keyword(s):  
Neural Plasticity ◽  
Traffic Accident ◽  
Road Traffic ◽  
Acquired Brain Injury ◽  
Written Language ◽  
Rapid Progress ◽  
Language Recovery ◽  
Paroxysmal Event ◽  
Speech And Language Disorders ◽  
Preceding Event

Many children who present with these acquired impairments of communication have a clear preceding event such as an acquired brain injury from a road traffic accident. Children often respond differently in this situation to adult presentations. They may have a period of mutism when the prognosis might look poor and yet they subsequently make rapid progress and recover speech. They have greater potential for neural plasticity and language recovery, although they often have persisting difficulties in oral and written language. Alternatively, there may be a presentation with a paroxysmal event such as a seizure or a period of depressed consciousness, and the unusual behaviour that may accompany dysphasia and dysarthria may be misinterpreted in the child, whereas for the adult with the more common ‘stroke-like’ presentation, it would be immediately considered. Rarely the aphasia/dysphasia may itself be the paroxysmal event where actually recognising that the child's disrupted communication is the basis of any observed behaviours can be the greater challenge.

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