scholarly journals Force and mass measurement in extended measuring range

2007 ◽  
Vol 20 (1) ◽  
pp. 21-29
Author(s):  
Slobodan Skundric ◽  
Dragan Kovacevic
Keyword(s):  
Mass Measurement ◽  
Electrical Engineering ◽  
Measuring Range ◽  
Original Solution ◽  
Nikola Tesla ◽  
Engineering Institute

This study deals with the problem of force and mass measurement in extended measuring range. Described solutions of electrodynamometer with multi range measuring and universal letter-batch mail scale are both concretely used in practice. The solution applied to universal mail scale is the original solution developed by Electrical Engineering Institute "Nikola Tesla".

scholarly journals Solving the problem of exploitation of transformers with corrosive sulfur by oil desulfurization using a strong inorganic base and organic solvent

2021 ◽  
Vol 31 (31) ◽  
pp. 113-123
Author(s):  
Dejan Kolarski ◽  
Jelena Janković ◽  
Draginja Mihajlović ◽  
Neda Kovačević ◽  
Jelena Lukić
Keyword(s):  
Organic Solvent ◽  
Sulfur Compound ◽  
Power Transformer ◽  
Electrical Engineering ◽  
Sulfur Compounds ◽  
Efficient Removal ◽  
Copper Conductor ◽  
Nikola Tesla ◽  
Paper Insulation ◽  
Engineering Institute

Most power transformer failures are associated with the presence of corrosive sulfur compounds in mineral insulating oil, of which dibenzyl disulfide (DBDS) is the best known and most widespread corrosive sulfur compound. The oil of failed transformers usually contained DBDS, a compound with a pronounced affinity for the formation of copper (I) sulfide (Cu2S). Copper (I) sulfide is a compound that does not dissolve in oil, conducts electricity, and can be deposited on the paper insulation or copper conductor of the transformer. Created conductive paths between the windings can initiate turn-to-turn breakdown and failure of the transformer. Several technological procedures have been developed as a solution to oil corrosivity. The application of desulfurization technology developed by the Electrical Engineering Institute "Nikola Tesla" enables the efficient removal of DBDS and aging products from mineral insulation oils.

Evgeniy Alekcandrovich Glazunov. To the 125th Anniversary from the Birthday

2015 ◽  
Vol 3 (4) ◽  
pp. 55-66
Author(s):  
Горнов ◽  
A. Gornov
Keyword(s):  
Research University ◽  
Electrical Engineering ◽  
Doctoral Dissertation ◽  
Machine Building ◽  
Descriptive Geometry ◽  
Engineering Drawing ◽  
Technical School ◽  
Prominent Scientist ◽  
125Th Anniversary ◽  
Engineering Institute

This year marks 85 years of the National Research University “Moscow Power Engineering Institute” (National Research University "MPEI”). The department of engineering drawing was the first among other departments in the MEI, for which it is also the anniversary year. The organizer and the first head of this department from 1930 to 1962 was Eugeniy A. Glazunov - a prominent scientist and educator, engineer and organizer, who celebrates 125 years. At the beginning of 1930 the Department of Electrical Engineering Higher Technical School, which earlier E.A. Glazunov graduated, has been transformed into the Moscow Higher School of Energy, which became soon the Moscow Energy Institute. Eugeniy Glazunov was appointed to the head of the department of descriptive geometry and drawing in MPEI. (Some time this department was called "Technical graphics"). His name is undeservedly rarely mentioned in textbooks and other literature in applied geometry and graphics. But Eugeniy Glazunov was very authoritative in the circle geometry and graphics, and among the heads of departments he was one of the initiators and leaders of the Moscow seminar on descriptive geometry, who published his works, and the head of the department, who generously shared teaching materials with his related institution. But E.A. Glazunov had relatively few publications compared with present time. But there were very capital works. One of them was written in conjunction with the N.F. Chetverukhin and is called "Axonometry." But it was not only an outstanding organizer and teacher, but also a magnitude engineer — designer and practitioner in the field of electrical engineering. He was a team-mate, who developed and marketed the first installation, substation and network of well-known Russian electrification plan — the plan for electrification. Based on his experience and under his leadership tasks on the engineering drawing based on electrical products and parts were improved, and drawing ceased to be exclusively machine-building. His merits in the development of engineering education and his geometry and graphic component were so significant that he was awarded the title of professorship of Higher Attestation Commission without doctoral dissertation. He was also one of the highest awards of that time, the Order of Lenin (1951).

Improving the system of training in the field of technosphere safety in the National Research University “Moscow Power Engineering Institute”

2020 ◽  
pp. 788-788
Author(s):  
E. V. Fedorova ◽  
A. V. Borovkova ◽  
V. S. Malyshev
Keyword(s):  
Characteristic Feature ◽  
Electric Power ◽  
Research University ◽  
Electrical Engineering ◽  
Electric Power Industry ◽  
Power Industry ◽  
Power Engineering ◽  
Industrial Safety ◽  
Anthropogenic Influence ◽  
Engineering Institute

A characteristic feature of the program in the direction of «Technosphere safety in the electric power industry and electrical engineering» is a detailed study of issues of industrial safety, industrial sanitation and anthropogenic influence on the environment. Students also study risk-oriented approaches to technosphere safety.

scholarly journals Biographical Profiling of Nikola Tesla for the Creation of an Engaging Story

2021 ◽  
Vol 12 (1) ◽  
pp. 12
Author(s):  
Yannis Hadzigeorgiou
Keyword(s):  
Science Education ◽  
Life Story ◽  
Electrical Engineering ◽  
Empirical Studies ◽  
Leadership Traits ◽  
Historical Events ◽  
Nikola Tesla ◽  
The Creation ◽  
Imaginative Thinking

This paper focuses on the potential of storytelling as a means of influencing students to become engaged with science and to choose a career in a STEM field. Given the role that leaders can play in motivating and influencing people and considering Nikola Tesla a leader in the fields of electrical engineering and science, the paper identifies Tesla’s leadership traits, as these emerge from his life story, that is, actual historical events regarding his life and his scientific/technological work. These leadership traits refer to (a) imaginative thinking and innovation, (b) persistence/perseverance, and (c) vision, and point to the need for empirical studies to document the effectiveness of the Nikola Tesla story to motivate and influence students. The significance of the Nikola Tesla story for science education is also discussed.

Conformation of eukaryotic ribosomal RNAs

1983 ◽  
Vol 41 ◽  
pp. 592-593
Author(s):  
M. Boublik ◽  
G. Thornton ◽  
G. Oostergetel ◽  
J.F. Hainfeld ◽  
J.S. Wall
Keyword(s):  
Molecular Weight ◽  
Mass Measurement ◽  
Carbon Film ◽  
Structural Complexity ◽  
Scanning Transmission Electron Microscope ◽  
Electron Microscopic ◽  
Pure Nitrogen ◽  
Freeze Dried ◽  
Scanning Transmission ◽  
Partially Unfolded

Understanding the structural complexity of ribosomes and their role in protein synthesis requires knowledge of the conformation of their components - rRNAs and proteins. Application of dedicated scanning transmission electron microscope (STEM), electrical discharge of the support carbon film in an atmosphere of pure nitrogen, and determination of the molecular weight of individual rRNAs enabled us to obtain high resolution electron microscopic images of unstained freeze-dried rRNA molecules from BHK cells in a form suitable for evaluation of their 3-D structure. Preliminary values for the molecular weight of 28S RNA from the large and 18S RNA from the small ribosomal subunits as obtained by mass measurement were 1.84 x 106 and 0.97 x 106, respectively. Conformation of rRNAs consists, in general, of alternating segments of intramolecular hairpin stems and single stranded loops in a proportion which depends on their ionic environment, the Mg++ concentration in particular. Molecules of 28S RNA (Fig. 1) and 18S RNA (not shown) obtained by freeze-drying from a solution of 60 mM NH+4 acetate and 2 mM Mg++ acetate, pH 7, appear as partially unfolded coils with compact cores suggesting a high degree of ordered secondary structure.

Elements of Electrical Engineering-XX

1908 ◽  
Vol 65 (1695supp) ◽  
pp. 404-406
Author(s):  
A. E. Watson
Keyword(s):  
Electrical Engineering

Elements of Electrical Engineering.—XXIV

1908 ◽  
Vol 66 (1703supp) ◽  
pp. 124-126
Author(s):  
A. E. Watson
Keyword(s):  
Electrical Engineering
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