1,105 research outputs found
Dumitru Radu Popescu.
No full text9. O pasăre dintr-o altă zi. Hoṭul de vulturi. Pasărea Shakespeare. Două ore de pace sau cine trece prin aulis. Mai suna-vei dulce corn?... sau cheia fermecată sau omul de cenușă sua rămășagul. F.M.S.M.L.O. sau horia sau lapte de pasăre. Rugăciune pentru un disc-jockey sau ziua de pe insulă. Muntele. Balconul sau clătite cu urdă și cu mărar.Mode of access: Internet
BOOK REVIEW ON THE CITY AND THE URBAN COMPETITION, AUTHOR: IRINA POPESCU
No full textThe book “The city and the urban competition / Orasul si competitia urbana”, written by Irina Popescu, has recently been published at Economic Publishing House of Bucharest, Romania. The book is structured in 4 parts and it is very rich in concepts, ideas, theories, principles and comparative studies, representing an important contribution of the author to the development of the literature concerning the study of the city.urban competition, urban system
Parameter identification and self-commissioning of AC permanent magnet machines - A review
No full textParameter identification of permanent magnet synchronous machines is a topic of utmost interest these days. The growing effort and investment in this field of research is largely due to the ever-expanding market share of these machines. The high-performance and efficient control of the drive depends on the accuracy with which the information about the machine connected to its terminals is available. The available identification methods are surveyed here and they are classified into offline and online strategies. Self-commissioning, in principle, is a subset of offline methods, yet it is treated separately for its importance in modern adjustable speed drives that tend to minimize the user intervention. Fully exploiting the power electronic converter and the computational power on-board a modern drive, the self-commissioning feature can be embedded in the start-up routine of the drive to estimate the parameters of the machine at hand. This paper presents a review of the parameter identification techniques and schemes investigated over the past few decade
Beaty Popescu : This Green Bag
No full textHorne discusses Popescu's works from 1987 to 1992 involving natural objects embedded within layers of paper; the author treats themes such as the interior/exterior dichotomy and analogies with food and digestive organs. Artist's statement. Biographical notes. 28 bibl. ref
To halt disease progression rehabilitation in MS should start early: Commentary
No full textThe author(s) received no financial support for the research, authorship and/or publication of this article
The Cuntz algebra Q_N and C*-algebras of product systems
No full textWe consider a product system over the multiplicative group semigroup N^x of Hilbert bimodules which is implicit in work of S. Yamashita and of the second named author. We prove directly, using universal properties, that the associated Nica-Toeplitz algebra is an extension of the C*-algebra Q_N introduced recently by Cuntz
The Cuntz algebra Q_N and C*-algebras of product systems
No full textWe consider a product system over the multiplicative group semigroup N^x of Hilbert bimodules which is implicit in work of S. Yamashita and of the second named author. We prove directly, using universal properties, that the associated Nica-Toeplitz algebra is an extension of the C*-algebra Q_N introduced recently by Cuntz
From Industrialised to Knowledge-Based Societies: The Metamorphosis of the French Disabled Worker since 1957
No full textPopescu C. From Industrialised to Knowledge-Based Societies: The Metamorphosis of the French Disabled Worker since 1957. In: Dinu RH, Bengtsson S, eds. Disability and Labour in the Twentieth Century. Historical and Comparative Perspectives. Interdisciplinary disability studies. London: Routledge; 2022: 104-121
Telocytes: ultrastructural, immunohistochemical and electrophysiological characteristics in human myometrium.
No full textTelocytes (TCs) have been described in various organs and species (www.telocytes.com) as cells with telopodes (Tps) - very long cellular extensions with an alternation of thin segments (podomers) and dilated portions (podoms). We examined TCs using electron microscopy (EM), immunohistochemistry (IHC), immunofluorescence (IF), time-lapse videomicroscopy and whole-cell patch voltage clamp. EM showed a three-dimensional network of dichotomous-branching Tps, a labyrinthine system with homocellular and heterocellular junctions. Tps release extracellular vesicles (mean diameter of 160.6±6.9 nm in non-pregnant myometrium and 171.6±4.6 nm in pregnant myometrium), sending macromolecular signals to neighbouring cells. Comparative measurements (non-pregnant and pregnant myometrium) of podomer thickness revealed values of 81.94±1.77 vs 75.53±1.81 nm, while the podoms' diameters were 268.6±8.27 vs 316.38±17.56 nm. IHC as well as IF revealed double c-kit and CD34 positive results. Time-lapse videomicroscopy of cell culture showed dynamic interactions between Tps and myocytes. In non-pregnant myometrium, patch-clamp recordings of TCs revealed a hyperpolarisation-activated chloride inward current with calcium dependence and the absence of L-type calcium channels. TCs seem to have no excitable properties similar to the surrounding smooth muscle cells (SMCs). In conclusion, this study shows the presence of TCs as a distinct cell type in human non-pregnant and pregnant myometrium and describes morphometric differences between the two physiological states. In addition, we provide a preliminary in vitro electrophysiological evaluation of the non-pregnant state, suggesting that TCs could influence timing of the contractile activity of SMCs
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