A Thermoregulator: For Direct Control of the Electric Circuit in a Heating Bath

1937 ◽  
Vol 9 (10) ◽  
pp. 481-482
Author(s):  
Frederic E. Holmes
Keyword(s):  
Electric Circuit ◽  
Direct Control ◽  
Heating Bath

Improving productivity and quality in thick slab casting by direct control of FC mould

2005 ◽  
Vol 102 (6) ◽  
pp. 431-440 ◽  
Author(s):  
S. Kollberg ◽  
P. Löfgren
Keyword(s):  
Direct Control ◽  
Thick Slab ◽  
Slab Casting

Automation of Two-Stage Factor VIII Assay

1978 ◽  
Vol 39 (02) ◽  
pp. 455-465 ◽  
Author(s):  
Yvonne Stirling ◽  
D J Howarth ◽  
Marguerite Vickers ◽  
W R S North ◽  
T W Meade
Keyword(s):  
Factor Viii ◽  
Optical Density ◽  
Electric Circuit ◽  
Clotting Time ◽  
Two Stage ◽  
Laboratory Error ◽  
Premature Closure ◽  
Factor Viii Concentrates ◽  
Experimental Findings ◽  
Automated Methods

SummaryTwo automated methods for two-stage factor VIII assays have been compared with one another, and evaluated in practice. The Depex method records the clotting time when an electric circuit is completed by the formation of a fibrin thread across a hook-type electrode; the Electra method is based on an optical density technique of clot detection. The two methods gave comparable results for measured levels of factor VIII when haemophilic or “normal” plasmas were assayed. Results from the two methods in practice also suggest that both are valid at low and “normal” factor VIII levels. The Electra method is also probably suitable for assays of concentrates; however, the Depex method appears to give falsely high values in these circumstances, and experimental findings suggest that the reason may be that increased viscosity due to the high fibrinogen levels in factor VIII concentrates causes premature closure of the circuit between the two ends of the Depex electrode. The main advantage of the Depex method is that, provided 3 or 4 machines are available, a given number of assays can be completed more quickly than on Electra. The main advantages of Electra are that it is probably subject to less laboratory error than Depex, and that it is suitable for assaying concentrates as well as haemophilic and “normal” plasmas.

Thin-film magnetoresistive current sensors

2019 ◽  
pp. 59-64
Author(s):  
V. I. Sukhanov ◽  
A. B. Grabov
Keyword(s):  
Thin Film ◽  
Electric Circuit ◽  
Current Control ◽  
Electronic Apparatus ◽  
Current Sensors

The article presents some features of thin-film magnetoresistive current sensors and detectors that was developed in JSC NPO IT for noncontact current control in electric circuit aviation and cosmic electronic apparatus.

МАКРОМОДЕЛИРОВАНИЕ СХЕМЫ ФАПЧ С ИСПОЛЬЗОВАНИЕМ ПОЛНОЙ ПРИНЦИПИАЛЬНОЙ СХЕМЫ ФАЗОВОГО ДЕТЕКТОРА

2020 ◽  
Vol 96 (3s) ◽  
pp. 295-299
Author(s):  
М.М. Гурарий ◽  
М.М. Жаров ◽  
Л.П. Ионов ◽  
И.И. Мухин ◽  
С.Г. Русаков ◽  
...  
Keyword(s):  
Electric Circuit ◽  
Schematic Diagram ◽  
Equivalent Electric Circuit ◽  
Phase Frequency Detector ◽  
Frequency Detector ◽  
A Current

В работе рассмотрены проблемы анализа схем ФАПЧ с учетом наличия неидеальностей в схеме частотно-фазового детектора с токовым ключом. Для снижения затрат на моделирование предложено использовать эквивалентную электрическую схему, содержащую полную принципиальную схему ЧФД и схемные эквиваленты макромоделей остальных блоков ФАПЧ. The paper considers the problems of analyzing the PLL circuit taking into account the presence of nonidealities in the phase-frequency detector with a current key. To reduce the simulation efforts, it has been proposed to apply an equivalent electric circuit containing the complete schematic diagram of the PFD and circuit equivalents of the macromodels of other PLL blocks.

Has the Sovereign Wealth Fund of Azerbaijan (SOFAZ) Been Able to Promote Economic Diversification?

2013 ◽  
Author(s):  
Vahid Yücesoy
Keyword(s):  
Fossil Fuels ◽  
Dutch Disease ◽  
Future Generations ◽  
Direct Control ◽  
Economic Diversification ◽  
Sovereign Wealth Funds ◽  
Sovereign Wealth Fund ◽  
Rentier States ◽  
Oil Revenues ◽  
Rich Countries

Oil-rich countries have oftentimes been confronted with the challenge of diversifying their economies away from oil dependence given the exhaustible nature of these fossil fuels. Investing in sovereign wealth funds has been one of the most ubiquitous ways of preparing for the post-oil period. Investing in sovereign wealth funds rather than directly injecting the oil revenues in the economy not only precludes the outbreak of the Dutch Disease (which is known for giving rise to an exchange rate appreciation, crowding out non-oil industries and keeping the economy reliant on oil), but it also saves for future generations. Yet, in the case of Azerbaijan, the Sovereign Wealth Fund of Azerbaijan (SOFAZ), founded in 1999, has only increased this reliance on oil. Using the rentier states theoretical framework, this paper will argue that the direct control over SOFAZ exercised by the president and the lack of consultation with the NGOs have made corruption easier, making the task of economic diversification more difficult. This has been possible because through corruption the president has often resorted to oil money to buy peace rather than invest it in economic diversification. As a result, since the foundation of SOFAZ, the country is more reliant, not less, on oil.   Full text available at: https://doi.org/10.22215/rera.v8i1.223  

Two-Phase Short Circuit in the Power Grid Powered by a Transformer with a Y/Δ-11 Winding Connection

2020 ◽  
pp. 25-30
Author(s):  
Aleksandr S. Serebryakov ◽  
Vladimir L. Osokin ◽  
Sergey A. Kapustkin
Keyword(s):  
High Speed ◽  
Short Circuit ◽  
Relay Protection ◽  
Electric Circuit ◽  
Operational Reliability ◽  
Research Purpose ◽  
Industrial Complex ◽  
Two Phase ◽  
Short Circuit Currents ◽  
Secondary Winding

The article describes main provisions and relations for calculating short-circuit currents and phase currents in a three-phase traction transformer with a star-triangle-11 connection of windings, which feeds two single-phase loads in AC traction networks with a nominal voltage of 25 kilovolts. These transformers provide power to the enterprises of the agro-industrial complex located along the railway line. (Research purpose) The research purpose is in substantiating theoretical equations for digital intelligent relay protection in two-phase short circuits. (Materials and methods) It was found that since the sum of instantaneous currents in each phase is zero, each phase of the transformer works independently. We found that this significantly simplifies the task of analyzing processes with a two-phase short circuit. In this case, the problem of calculating short-circuit currents in the traction network can be simplified by reducing it to the calculation of an ordinary electric circuit with three unknown currents. (Results and discussion) The article describes equations for calculating short-circuit resistances for one phase of the transformer when connecting the secondary winding as a star or a triangle. The currents in the phases of the transformer winding at short circuit for the star-triangle-11 and star-star-with-ground schemes are compared. It was found that when calculating short-circuit currents, there is no need to convert the secondary winding of the traction transformer from a triangle to a star. (Conclusions) It was found that the results of the research can be used in the transition of relay protection systems from electromagnetic relays to modern high-speed digital devices, which will increase the operational reliability of power supply systems for traction and non-traction power consumers.

Toward a Realistic Representation of Global Electric Circuit Generators in Models of Atmospheric Dynamics

2020 ◽  
Vol 125 (6) ◽  
Author(s):  
Nikolay V. Ilin ◽  
Nikolay N. Slyunyaev ◽  
Evgeny A. Mareev
Keyword(s):  
Electric Circuit ◽  
Atmospheric Dynamics ◽  
Global Electric Circuit ◽  
Realistic Representation
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