Search results for "Strike"
showing 10 items of 52 documents
Development of a low-cost IoT system to detect and locate lightning strikes
2020
Lightnings are violent natural phenomena and can generate many expenditures, specially when they strike in urban areas. The identification of the concrete geographic area where they strike is of critical importance for emergency services in order to enhance their effectiveness by doing an intensive coverage of the affected area. To achieve this aim, this paper proposes a design, prototype and validation of a distributed network of Internet of Things (IoT) devices to enable detection and location of lightning strikes. The IoT devices are empowered with lightning detection capabilities and are synchronized with the other devices in the sensor network. All of them cooperate within a network th…
New circuital models of grounding systems and PDS for EMI analysis during a lightning strike
2005
In this paper circuital models of a Power Drive System (PDS) and of grounding systems are proposed in order to analyse Electromagnetic Interferences (EMI) induced in a PDS when a lightning current flows in the grounding system. The models have been developed adopting the network approach with lumped parameters and have been implemented using the software MATLAB. A High Frequency (HF) model suitable to simulate the impulse response of a PDS is described and a generalized method in order to calculate the lumped parameters values of grounding system models is presented. The new method takes into account the burial depth of electrodes as regards their length. The validation results of this new …
The Mulgandinnah Shear Zone; an Archean crustal scale strike-slip zone, eastern Pilbara, Western Australia
1998
Abstract A large part of the deformation in the Archean Pilbara granitoid-greenstone terrain is localized in relatively narrow shear zones. The Mulgandinnah shear zone (MSZ) is a major one of these, with a width up to 8 km, that can be followed for over 70 km along strike in the Shaw Batholith in the eastern Pilbara. It forms part of the Mulgandinnah Lineament, that can be traced to the Lalla Rookh Basin and the Carlindi Batholith in the north, giving it a total length of over 150 km. The MSZ contains both mylonites and ultramylonites, both of which have foliations that are subvertical to steeply dipping, with the ultramylonitic foliation overprinting the mylonitic foliation to form more lo…
Investigation of the skin lesions in lightning strike death
2021
Lightning strike-related deaths are unusual, and the victim bodies can present different lesions due to the different injury mechanisms associated with this event. Since the post mortem assessment can be challenging, the evaluation of the characteristics of the skin lesions becomes fundamental to reconstruct the event. Due to the paucity of literature on this topic, the authors report the case of a 59-year-old man found dead near his home after a thunderstorm. Initially considered a murder by gunshot, the autopsy revealed the typical lightning strike lesions, also known as Lichtenberg figures. The adequate interpretation of the autopsy data and the histological evidences allowed to reconstr…
Imported Stem Cells Strike against Stroke.
2015
Cells with neural stem cell (NSC)-like properties can be isolated from the cortex of adult brains following injury, but their origins and function are unclear. Now in Cell Stem Cell, Faiz et al. (2015) show that subventricular-zone-derived NSCs home to injured cortical area following stroke, where they generate reactive astrocytes.
Comment on "Displacement along the Karakoram fault, NW Himalaya, estimated from LA-ICP-MS U Pb dating of offset geologic markers" published by Shifen…
2013
International audience; Field evidence for syn-deformation migmatization and crystallization along the Karakorum fault contradicts the study of Wang et al. (2012). The ages of such magmatic rocks provide minimum ages for the onset of deformation at similar to 23 Ma in North Ayilari and similar to 19 Ma in Tangtse. The onset of deformation at 12 Ma in the Ayilari range inferred by Wang et al. (2012) from a muscovite Ar/Ar age is a cooling age, thus only a minimum age. The similar to 60 Ma granodiorite bodies, the ophiolitic rocks and the south Kailash thrust that are correlated across the fault to provide a 52 +/- 2 km finite offset do not define reliable piercing points. Such observations a…
The Worst Record in Europe?: A Comparative Analysis of Industrial Conflict in Spain
2001
Since the transition to democracy, Spain has recorded the highest strike rate of EU countries. Drawing on a comparison with Franzosi's analysis of strikes in Italy, this article seeks to explain the high number of working days lost in Spain by reference to the role of sectoral bargaining, the instability of corporatist relations, solidaristic features of worker representation and Spanish society, and the development of industrial action by unions outside the main confederations. It is suggested that the pattern of industrial conflict reflects the limited strategic options available to Spanish trade unions and Spanish employers' ambivalence toward industrial relations institutions. The arti…
Understanding Paleomagnetic Rotations in Sicily: Thrust Versus Strike-Slip Tectonics
2018
The paleomagnetic investigation of the western Sicily Maghrebian belt has revealed since the 1970s that large clockwise rotations up to 140° with respect to the Hyblean-African foreland occurred synchronous with Tertiary shortening of the chain. The observation that rotations decrease stepwise from internal to external tectono-stratigraphic units led in the 1990s to a widely accepted model postulating that rotational thrust-sheet emplaced during forward orogenic propagation. More recently, other authors suggested that clockwise rotations from Sicily are conversely the result of late orogenic dextral strike-slip tectonics. Here we report on a paleomagnetic investigation of 30 Jurassic-Eocene…
Nación, emoción y fantasía. La España melodramática de Ayguals de Izco = Nation, Emotion and Fantasy. Ayguals de Izco's Melodramatic Spain
2017
El artículo analiza las novelas por entregas de Wenceslao Ayguals de Izco (1801-1873) desde su dimensión melodramática para señalas de qué modo participaron en la creación de los imaginarios, las narrativas sociales y políticas y la "comunidad emocional" del radicalismo democrático español de mediados del siglo XIX. Posteriormente examino una serie de "fantasías nacionales" que se repiten con insistencia en estas novelas melodramáticas: la unión matrimonial como metáfora de la plenitud nacional, el mártir por la patria y el "ángel de salvación" que socorre a los desfavorecidos. Todas estas fantasías se fundan en la diferencia sexual (al tiempo que la construyen) y permiten la identificación…
Structural overprint of a late Paleozoic accretionary system in north-central Chile (34°-35°S) during post-accretional deformation
2009
En la Cordillera de la Costa de Chile, de 36° a 35°S, se encuentra expuesta la arquitectura coherentemente preservada de un prisma de acrecion del Paleozoico tardio, en cercana vecindad a un area entre los 34° y 35°S, donde el mismo esta fuertemente modificado por procesos postacrecionales. Estudiando las desviaciones de la arquitectura original, en esta region pueden ser perfectamente distinguidas estructuras sin- y post acrecionales. Al sur de los 35° se observa un contacto transicional entre dos unidades mayores, el cual refleja un cambio continuo en el modo de acrecion de la cuna acrecional antes de -305 Ma: las metagrauvacas estructuralmente suprayacentes de las series orientales muest…