Results 271 to 280 of about 2,311,006 (294)

Preliminary studies on stand-off laser induced breakdown spectroscopy detection of aerosols

Journal of Analytical Atomic Spectrometry, 2008
Laser induced breakdown spectroscopy (LIBS) was demonstrated in stand-off mode as a detection technique for polydisperse liquid aerosols. The goal of this work was to assess the possibility of producing optical breakdown in an aerosol at 10 meters of distance, and to detect the analytical signal resulting from the optical discharge.
Luis Alonso Álvarez-Trujillo, Alejandro Ferrero, J. Javier Laserna   +2 more
openaire   +1 more source

Preliminary study of identifying trench oil based on laser-induced breakdown spectroscopy

Chinese Science Bulletin, 2014
In order to distinguish edible oil and trench oil (which is called di-gou-you in Chinese), spectral features of the samples were investigated by laser-induced breakdown spectroscopy (LIBS) in this paper. Artificial neural network (ANN) model was also built and tested for spectral data analysis, and the research results showed that the ANN model was ...
JiaHong LIU, Ran HAI, HongBin DING, DongYe ZHAO, Ding WU, Ping LIU   +5 more
openaire   +1 more source

Preliminary estimate of the cost breakdown for the Fusion Ignition Experiment IGNITEX

IEEE Thirteenth Symposium on Fusion Engineering, 2003
A preliminary estimate of the cost breakdown for the Fusion Ignition Experiment (IGNITEX) is presented. The IGNITEX concept proposed by M.N. Rosenbluth, W.F. Weldon, and H.H. Woodson (1987) is based on B. Coppi's idea for a compact thermonuclear experiment and has the potential to produce and control ignited plasmas at a relatively low cost ($130M ...
R. Carrera, W.D. Booth, J.H. Gully, R. Tucker, W.A. Walls, W.F. Weldon, M. Werst   +6 more
openaire   +1 more source

Tryptophan breakdown is increased in euthymic overweight individuals with bipolar disorder: a preliminary report

Bipolar Disorders, 2013
ObjectivesIndividuals with bipolar disorder (BD) are disproportionately affected by symptoms of being overweight and metabolic syndrome when compared to the general population. The pertinence of this observation is underscored by observations that excess weight is associated with a more complex illness presentation, course, and outcome in BD.
Eva Z, Reininghaus, Roger S, McIntyre, Bernd, Reininghaus, Simon, Geisler, Susanne A, Bengesser, Nina, Lackner, Karen, Hecht, Armin, Birner, Fabian, Kattnig, Renate, Unterweger, Hans-Peter, Kapfhammer, Sieglinde, Zelzer, Dietmar, Fuchs, Harald, Mangge   +13 more
openaire   +2 more sources

Preliminary Breakdown Pulses (PBP): A review on available data and models

Electric Power Systems Research
Lightning is a major risk for humans, animals, and electrical systems. Many researches focused on the fully developed events, such as the Return Stroke (RS) current, the emitted electromagnetic fields, and the phenomenon modeling. However, there is poor understanding regarding precursors, such as Preliminary Breakdown Pulses (PBP).
Sekehravani, Ehsan Akbari, Dodge, Shayan, Barmada, Sami, Brignone, Massimo, Formisano, Alessandro, Mestriner, Daniele, Nicora, Martino, Procopio, Renato   +7 more
openaire   +2 more sources

Blood-brain barrier breakdown in COVID-19 ICU survivors: a preliminary study

ISMRM Annual Meeting
COVID-19 affects multiple organ systems in the acute phase, however, limited knowledge is known about the long-term impact on the brain following COVID-19 pneumonia, especially for those severe COVID-19 ICU survivors. Here, we used a water-extraction-with-phase-contrast-arterial-spin-tagging (WEPCAST) MRI which can non-invasively measure BBB ...
Wen Shi, Dengrong Jiang, Hannah Rando, Shivalika Khanduja, Zixuan Lin, Kaisha Hazel, George Pottanat, Ebony Jones, Cuimei Xu, Doris Lin, Sevil Yasar, Sung-Min Cho, Hanzhang Lu   +12 more
openaire   +1 more source

Characterization of Electric Fields Produced by Preliminary Breakdown Pulses Observed in Bogotá, Colombia

, 2019
C. Granados, H. Rojas, C. Rivera, F. Roman   +3 more
semanticscholar   +1 more source

Perbedaan karakteristik pulsa peter narrow bipolar dengan Preliminary breakdown

2017
Narrow Bipolar merupakan salah satu kejadian petir yang terjadi di dalam awan yang berlangsung sangat cepat dan memiliki kekuatan radiasi yang sangat kuat dibandingkan petir biasa. Preliminary Breakdown adalah deretan pulsa medan listrik yang terjadi beberapa milidetik sebelum Stepped Leader dan Return Stroke dimana dapat dilihat dari polaritas ...
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A model of preliminary breakdown pulse peak currents and their relation to the observed electric field pulses

, 2017
P. Kašpar, O. Santolík, I. Kolmašová, T. Farges   +3 more
semanticscholar   +1 more source

KORELASI PRELIMINARY BREAKDOWN PETIR DOWNWARD LEADER DAN NEGATIVE RETURN STROKE

2014
Pemahaman yang benar tentang petir dapat mengurangi kerugian yang besar akibat sambaran petir dan mengawali disain yang optimal sistem proteksi petir. Selain itu kesimpulan yang dibuat oleh Ahmmad (2012) dalam penelitiannya yang berjudul lightning interference in multiple antenas wireless communication system menyatakan bahwa multiple antenas wireless ...
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