scholarly journals On the Work of Meshcheryakov (Afterword and Notes

2021 ◽  
Vol 29 (4) ◽  
pp. 164-174
Author(s):  
E.V. Ilenkov ◽  
A.D. Maidansky
Keyword(s):  
Experimental Study ◽  
Ussr Academy ◽  
Spatial Form ◽  
Objective Reality ◽  
Spatial Object ◽  
Children's Home ◽  
Temporal Process ◽  
Action Taking ◽  
Blind Persons ◽  
First Time

In 1963, a children’s home for the deaf-mute was founded in Zagorsk, near Moscow. Alexander Meshcheryakov, the head of the laboratory at the Institute of Defectology of the Academy of Pedagogical Sciences, became its supervisor. Four years later, Evald Ilyenkov joined the experiment. The archival text “On the work of Meshcheryakov”, published now for the first time, was presented at the Presidium of the USSR Academy of Pedagogical Sciences in February 1973. In this paper, Ilyenkov briefly formulates his conception of psychical image as condensing of a temporal process of activity into a spatial form of object, and suggests a number of deep thoughts on connection of the psyche and language, sign and meaning, word and action, taking his stand on the data of the Zagorsk experiment. The process of image formation is demonstrated by the case “Julia and the ravine”. After a walk along the ravine, a deaf-blind girl was able to mould the contour of the ravine from plasticine. Without seeing the ravine, she reproduced the trajectory of her body’s motion as some spatial object. The formation of language in deaf-blind persons begins with gesture speech, which is gradually transformed into verbal speech — first in its dactyl, then written and, finally, sound form. The experimental study of this transformation helps to solve the question of how speech and language are connected to objective reality.

scholarly journals A Combined Computational and Experimental Study of Methane Activation during Oxidative Coupling of Methane (OCM) by Surface Metal Oxide Catalysts

2021 ◽  
Author(s):  
Daniyal Kiani ◽  
Sagar Sourav ◽  
Jonas Baltrusaitis ◽  
Israel E Wachs
Keyword(s):  
Experimental Study ◽  
Metal Oxide ◽  
Oxidative Coupling ◽  
Active Sites ◽  
Computational Models ◽  
Oxidative Coupling Of Methane ◽  
Catalytic Active Sites ◽  
Surface Metal ◽  
Heterolytic Dissociation ◽  
First Time

The experimentally validated computational models developed herein, for the first time, show that Mn-promotion does not enhance the activity of the surface Na2WO4 catalytic active sites for CH4 heterolytic dissociation...

Size Reduction of Cellulosic Biomass in Biofuel Manufacturing: Effects of Milling Orientation on Sugar Yield

2011 ◽  
Author(s):  
Meng Zhang ◽  
Xiaoxu Song ◽  
P. F. Zhang ◽  
Q. Zhang ◽  
Z. J. Pei ◽  
...  
Keyword(s):  
Experimental Study ◽  
Greenhouse Gas Emissions ◽  
Greenhouse Gas ◽  
Metal Cutting ◽  
Sugar Yield ◽  
Size Reduction ◽  
Cellulosic Biomass ◽  
Poplar Wood ◽  
Cellulosic Biofuels ◽  
First Time

Cellulosic biofuels can reduce greenhouse gas emissions and the nation’s dependence on foreign oil. In order to convert cellulosic biomass into biofuels, size reduction of biomass is a necessary step. Most related studies in the literature claimed that smaller particles produced higher sugar yields. However, some researchers reported that this claim was not always true. The literature does not have satisfactory explanations for the inconsistence. This paper presents an experimental study on size reduction of poplar wood using a metal cutting process (milling). The results provided one explanation for this inconsistence. It was found for the first time that milling orientation had a strong effect on poplar wood sugar yield. Although smaller poplar particles had a higher sugar yield when they were milled from the same orientation, this trend did not exist for particles milled from different orientations.

scholarly journals The role op the researches of E.I. Kazimirchak-Polonskaya on the dynamical evolution of short-period comets

1985 ◽  
Vol 83 ◽  
pp. 237-241
Author(s):  
N.A. Belyaev
Keyword(s):  
Celestial Mechanics ◽  
Ussr Academy ◽  
Dynamical Evolution ◽  
Time Span ◽  
General Plan ◽  
Short Period ◽  
First Time ◽  
Important Branch ◽  
Definitive Form

In 1961 Kazimirchak-Polonskaya (1961a, 1961b) published comprehensive reviews of all investigations on the dynamics of cometary orbits as well as on close approaches of the short-period comets with Jupiter for the time span covering 1770–1960 and for the first time put forward the basic problems of cometary astronomy from the standpoint of celestial mechanics. Chebotarev (1971) pointed out that “these reviews, supplemented with extensive references, can serve as a valuable manual for all researchers of cometary motions”. In 1967 Kazimirchak-Polonskaya (1967a) developed the advanced problems in a definitive form. The corresponding member of the USSR Academy of Science M.F. Subbotin (at that time the Head of the Institute) characterized the above mentioned works as “the general plan for cometary studies in the important branch of cometary astronomy”.

scholarly journals Experimental Study on Coal Gasification in a Full-Scale Two-Stage Entrained-Flow Gasifier

Energies ◽  
2020 ◽  
Vol 13 (18) ◽  
pp. 4937
Author(s):  
Guangyu Li ◽  
Luping Wang ◽  
Chaowei Wang ◽  
Chang’an Wang ◽  
Ping Wu ◽  
...  
Keyword(s):  
Experimental Study ◽  
Coal Gasification ◽  
Full Scale ◽  
Input Rate ◽  
Two Stage ◽  
Entrained Flow ◽  
Operation Period ◽  
Entrained Flow Gasifier ◽  
Coal Resource ◽  
First Time

In this paper, coal gasification characteristics in the reductor were investigated in a full-scale two-stage pressurized entrained-flow gasifier, which has been seldom conducted previously. The present study aimed at elucidating the effects of gasifying agent concentration, coal input rate, and operation period under full reductor load on the performance of a utility two-stage pressurized entrained-flow gasifier for the first time. When the steam input in the combustor was raised from 3318 kg/h to 5722 kg/h, the total outputs of H2, CO, and CO2 were increased by 1765 Nm3/h and 2063 Nm3/h, respectively, while the CH4 output was decreased by 49 Nm3/h. The coal conversion rate was minimal at low steam input. In addition, more coal gasified in the reductor could increase the output of CH4, while CH4 could reach 1.24% with the coal input in the range of 8000–10,000 kg/h. The present work can offer a further understanding of the gasification performance in the reductor of the full-scale two-stage pressurized entrained-flow gasifier, and motivates the potential for clean utilization of coal resource.

An Experimental Study of Torsional Vibration Absorbers

2001 ◽  
Author(s):  
Alan G. Haddow ◽  
Steven W. Shaw
Keyword(s):  
Experimental Study ◽  
Dynamic Behavior ◽  
Systematic Study ◽  
Torsional Vibration ◽  
Theoretical Background ◽  
Controlled Environment ◽  
Vibration Absorbers ◽  
Test Apparatus ◽  
First Time ◽  
Theoretical Results

Abstract This paper presents results from tests completed on a rotor system fitted with pendulum-type torsional vibration absorbers. A review of the associated theoretical background is also given and the experimental and theoretical results are compared and contrasted. An overview of the test apparatus is provided and its unique features are discussed. To the best knowledge of the authors, this is the first time that a systematic study of the dynamic behavior of torsional vibration absorbers has been undertaken in a controlled environment.

scholarly journals Simultaneous Detection of Dopamine and Serotonin—A Comparative Experimental and Theoretical Study of Neurotransmitter Interactions

Biosensors ◽  
2018 ◽  
Vol 9 (1) ◽  
pp. 3 ◽  
Author(s):  
Felicia Manciu ◽  
Marian Manciu ◽  
John Ciubuc ◽  
Emma Sundin ◽  
Katia Ochoa ◽  
...  
Keyword(s):  
Experimental Study ◽  
Theoretical Study ◽  
Simultaneous Detection ◽  
Pharmaceutical Research ◽  
Label Free ◽  
Neural Processes ◽  
Experimental Approaches ◽  
Biological Relationship ◽  
First Time ◽  
Accurate Quantification

With the goal of accurately detecting and quantifying the amounts of dopamine (DA) and serotonin (5-HT) in mixtures of these neurotransmitters without using any labelling, we present a detailed, comparative computational and Raman experimental study. Although discrimination between these two analytes is achievable in such mixtures for concentrations in the millimolar range, their accurate quantification remains unattainable. As shown for the first time in this work, the formation of a new composite resulting from their interactions with each other is the main reason for this lack of quantification. While this new hydrogen-bonded complex further complicates potential analyte discrimination and quantification at concentrations characteristic of physiological levels (i.e., nanomolar concentrations), it can also open new avenues for its use in drug delivery and pharmaceutical research. This remark is based not only on chemical interactions analyzed here from both theoretical and experimental approaches, but also on biological relationship, with consideration of both functional and neural proximity perspectives. Thus, this research constitutes an important contribution toward better understanding of neural processes, as well as toward possible future development of label-free biosensors.

The hydraulics of steady two-layer flow over a fixed obstacle

1993 ◽  
Vol 254 ◽  
pp. 605-633 ◽  
Author(s):  
Gregory A. Lawrence
Keyword(s):  
Experimental Study ◽  
Flow Rate ◽  
Classification Scheme ◽  
Experimental Confirmation ◽  
Maximum Height ◽  
Two Dimensional ◽  
Hydraulic Control ◽  
Layer Flow ◽  
First Time ◽  
Shock Solution

This paper reports the results of a theoretical and experimental study of steady two-layer flow over a fixed two-dimensional obstacle. A classification scheme to predict the regime of flow given the maximum height of the obstacle, the total depth of flow, and the density and flow rate of each layer, is presented with experimental confirmation. There are differences between this classification scheme and that derived for flow over a towed obstacle by Baines (1984, 1987). These differences are due to the motion of upstream disturbances in towed obstacle flows. Approach-controlled flows, i.e. flows with an internal hydraulic control in the flow just upstream of the obstacle are studied in detail for the first time. This study reveals that non-hydrostatic forces, rather than a shock solution (called an internal hydraulic drop by previous investigators), need to be considered to explain the behaviour of Approach-controlled flows.

The special deterrent effects of a jail sanction on first-time drunk drivers: A quasi-experimental study

1993 ◽  
Vol 25 (5) ◽  
pp. 561-568 ◽  
Author(s):  
Susan E. Martin ◽  
Sampson Annan ◽  
Brian Forst
Keyword(s):  
Experimental Study ◽  
Quasi Experimental ◽  
Drunk Drivers ◽  
First Time

Do Television Debates in Multiparty Systems affect Viewers? A Quasi- experimental Study with First-time Voters

2007 ◽  
Vol 30 (1) ◽  
pp. 115-135 ◽  
Author(s):  
Toril Aalberg ◽  
Anders Todal Jenssen
Keyword(s):  
Experimental Study ◽  
Multiparty Systems ◽  
Quasi Experimental ◽  
First Time

scholarly journals From the history of the formation of the Far Eastern Scientific Center of the USSR Academy of Sciences

2020 ◽  
Author(s):  
В.В. БОГАТОВ
Keyword(s):  
Ussr Academy ◽  
Scientific Center ◽  
History Of ◽  
Academy Of Sciences ◽  
Far Eastern ◽  
First Time ◽  
Time Information

Анализируются этапы формирования Дальневосточного научного центра АН СССР. Впервые приводятся сведения о проектировании комплекса зданий Дальневосточного филиала АН СССР во Владивостоке. The stages of formation of the Far Eastern Scientific Center of the USSR Academy of Sciences are analyzed. For the first time, information is provided on the design of a complex of buildings for the Far Eastern Branch of the USSR Academy of Sciences in Vladivostok.

Sign in / Sign up

Export Citation Format

Share Document