193 research outputs found
Experimental Evaluation of an EM Centrifugal Pump Developed According to Orion’s ESM ATCS Needs
No full textGheorghe Megherelu, Romanian R&D Institute for Gas Turbines COMOTI, RomaniaDragos Mihai, Romanian R&D Institute for Gas Turbines COMOTI, RomaniaCristian Dobromirescu, Romanian R&D Institute for Gas Turbines COMOTI, RomaniaIonut-Florian Popa, Romanian R&D Institute for Gas Turbines COMOTI, RomaniaIulia Tinca, Romanian R&D Institute for Gas Turbines COMOTI, RomaniaICES103: Thermal Control of Commercial and Exploration
Spacecraft and Surface HabitatsThe 54th International Conference on Environmental Systems was held in Prague, Czechia, on 13 July 2025 through 17 July 2025.The current developments in terms of space equipment
require more versatile thermal control systems, capable of
rejecting high heat quantities. This can be done by means
of passive or active thermal systems, which, besides
typical solutions (coatings, MLI, radiators, etc.),
requires either Loop Heat Pipes (LHP) or Mechanically
Pumped Fluid Loops (MPFL). One application which requires
such active thermal control is the ESM module of the MPCV
Orion spacecraft, as part of one of the main international
space programs (Artemis) currently undergoing as a
collaboration between NASA and ESA, with the goal to bring
the first people back to Moon surface after more than 50
years. Following closely this topic, COMOTI, the Romanian
R&D Institute for Gas Turbines, is currently developing a
centrifugal pump capable of meeting the ESM MPFL system
requirements. The pump is a canned centrifugal type,
designed to run with HFE-7200, with a duty point of 750
kg/h and 2.13 bard pressure rise. This one was developed in
several stages, starting from initial design iterations
(analytical calculus and CFD studies), and afterwards
focusing on a comprehensive experimental evaluation with
tests performed on demonstrators relevant for the hydraulic
part/motor, and finally characterization of the performance
in relevant environment at pump level on a dedicated
dismountable EM (Engineering Model). The current paper
addresses the approach followed for the development and
experimental evaluation of the pump, presenting each step
performed and main conclusions
Two important traditional prices' indices for the measurement of inflation and cost-of-living in Romania, during the last century
No full textThis paper details the two original constructions of price indices made by the author in the last ten years. These constructions are a proposal of centennial price index and an over eighty years old Romanian cost-of-living index.statistical index, interpret index, cost-of-living index (CLI), consumer price index (PCI), harmonized consumer price index (HPCI), Schumpeterian index, centennial index.
THE PORTRAIT OF BOYAR MOŢOC IN THE WORK OF COMPOSER GHEORGHE MUSTEA
No full textThe present survey aims at emphasizing Gheorghe Mustea’s ability to create a musical portrait of Boyar Moţoc, in his opera, “Alexandru Lăpuşneanu”. The overall portrait the author creates for this historical figure includes his psychological profile, suggestively presented in three different states, outlined on the relationship between two pillars (cause and effect and premise - consequence)
HYPOSTASES OF THE POLYPHONIC TREATMENTS IN GHEORGHE NEAGA’S INSTRUMENTAL CHAMBER MUSIC
No full textGheorghe Neaga’s instrumental chamber music constitutes a rich repertoire with representative works for native academic music. The more so, since from the perspective of composition art, the author tended to the excellence of each element of musical expressiveness. As evidence of this can be considered his instrumental chamber works, including sonatas, suites for various instrumental configurations and instrumental ensembles, and not least, the infinite string of instrumental miniatures. Returning to the musical expressiveness, it is necessary to emphasize the fact that in Gheorghe Neaga’s instrumental chamber music is evident, in a different measure for each work, a polyphonic treatment which can be considered typical of the author. That is why the present article aims to present some principles and techniques used by the composer in his own manner in some of his creations offered as examples
THE PROBLEM OF FORM IN GHEORGHE NEAGA’S STRING QUARTET NO.3
No full textThis article focuses on a form analysis of one of Gheorghe Neaga’s last works. With a bipartite cyclical structure, String Quartet No.3 fits perfectly into the category of demonstrating opuses for removing from the foreground of the classical quadrature specific to the quartet genre and replacing its importance with various other means of high artistic thinking and conceptualization of music. Thus, focusing on a modal language, the author also avoids the usual patterns for the inner forms of the parts of a quartet. In addition, Gheorghe Neaga doesn’t adapt the content to stunning developments, but gives his preference for heterophony, and the modal relations are integrated in the chromatic totality, so that the sound universe of the work gets a significant complexity
GHEORGHE CUCU – THE COMPOSER'S CREATIONS IN MANUSCRIPT
No full textIn 1970, I.B.M.B.O.R. (The Missionary Biblical Institute of the Romanian Orthodox Church) published “Hymns of the Divine Liturgy arranged for mixed chorus”. This work contains only 50 hymns – just a small section of the composer’s creation. Nicolae Lungu, the author of the foreword on this edition, mentioned: “many hymns were issued in booklets, handbooks and musical periodicals; other hymns were preserved in manuscript, waiting to be published” (Gheorghe Cucu, Cântările Sfintei Liturghii..., (Holy Liturgy Songs...), Bucharest, 1970, p. IV). In this study we refer to the manuscripts kept in the Romanian Academy Library. Albeit much of Cucu’s musical scores were published and were shared by most of the Romanian and Diaspora choirs, there still remains an unexplored part of Cucu’s creation that completes the image of his personality as composer, conductor and professor
COORDINATION IMPROVEMENT OF THE “INVESTIGATION-ADMINISTRATION” TIES WITH THE AIM TO CREATE FAIR RELATIONS IN NATIONAL ECONOMY DEVELOPMENT
No full textThe relevance of the paper is incited by the actual economic situation. In the article the author sets the goal to describe peculiarities of the relationship investigation-administration, specify the obstacles in obtaining positive results after the process of implementing the research results and give examples of methods for improving cooperation between science and administration. The methods used for achieving the goals are analysis and synthesis, and induction and deduction. The concluded key point is that the efficient cooperation of these two types of individuals (the researcher and the public servant) in economy is the most certain way to obtain fair relations in this field
THE MADRIGAL LET THE STARS SHINE BY GHEORGHE MUSTEA: COMPOSITIONAL PARTICULARITIES AND ASPECTS OF CHOIR INTERPRETATION
No full textIn this article the author analyses one of the most valuated opuses from the choir music, written by Gheorghe Mustea — „Let the Stars Shine”. The author presents a classification of the composer’s choral music in accordance with the types of choir and after that analyses the nominalised madrigal. The article reveals the compositional particularities and aspects of interpretation, the dramaturgy and means of expression. The material of the article may be used by the choir conductors, who approach the national repertoire day by day
Termeni și expresii în limbile latină, franceză, engleză și germană în scrierile lui Gheorghe Grigurcu
No full textThis article aims to check the hypothesis that contemporary writers should be prone to multiculturalism and multilingualism in the context of redefining Weltliteratur, as well as the liaisons between languages and cultures. To this end, the paper surveys several non-fictional works by Romanian literary critic Gheorghe Grigurcu, listing and explaining several terms in Latin, French, English, and German that the author weaves within the text
THE ROLE AND IMPORTANCE OF THE STRATEGIC PLANNING IN BANK MARKETING
No full textThe paper aims to highlight the strategic planning role and place in bank marketing, define the concepts of strategic planning and marketing planning and the tactical planning, marketing plan and marketing program. In this context, the author emphasize the strategic marketing planning process and its implementation stages (defining the specific mission, environmental analysis, formulation of objectives, strategies, action plans and programs, implementation, testing, overhaul and performance evaluation). Also, are reviewed organizational and decision levels specific for the strategic planning, higher organizational level, strategic unit level and operational level and the criteria considered in formulating objectives: acceptability, flexibility, motivating character, clarity, feasibility and compatibility.marketing plan; marketing planning; strategic planning; tactical planning; marketing program; higher organizational level; unit level strategic; operational level
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