Research on Liquid CO2 Phase Transition Ejection Technology

Due to the low temperature and clean gas, liquid CO2 phase transition ejection technology has outstanding advantages such as high versatility, low launch cost, and environmental friendliness, which will open up a new research field for the development of missile launch technology. Through the study of phase transition characteristics of liquid CO2 in this paper, a mathematical model of internal ballistics of the liquid CO2 phase transition ejection power system is established. And through simulation calculation, the launching parameters such as the pressure in the launcher, the velocity and acceleration of the missile are obtained, and they is compared with the experiment data to verify the validity of the model.

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Louis Paul Cailletet: The liquefaction of oxygen and the emergence of low-temperature research

Notes and Records the Royal Society journal of the history of science ◽

10.1098/rsnr.2013.0047 ◽

2013 ◽

Vol 67 (4) ◽

pp. 355-373 ◽

Cited By ~ 4

Author(s):

Faidra Papanelopoulou

Keyword(s):

Low Temperature ◽

Research Field ◽

New Research ◽

Permanent Gases

In 1877 Louis Paul Cailletet in France and Raoul Pictet in Switzerland liquefied oxygen in the form of a mist. The liquefaction of the first of the so-called permanent gases heralded the birth of low-temperature research and is often described in the literature as having started a ‘race’ for attaining progressively lower temperatures. In fact, between 1877 and 1908, when helium, the last of the permanent gases, was liquefied, there were many priority disputes—something quite characteristic of the emergence of a new research field. This paper examines Cailletet's path to the liquefaction of oxygen, as well as a debate between him and the Polish physicist Zygmunt Wróblewski over the latter's contribution to the liquefaction of gases.

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Survival of mouse blastocysts after low-temperature preservation under high pressure

Acta Veterinaria Hungarica ◽

10.1556/avet.52.2004.4.10 ◽

2004 ◽

Vol 52 (4) ◽

pp. 479-487 ◽

Cited By ~ 7

Author(s):

Cs. Pribenszky ◽

M. Molnár ◽

S. Cseh ◽

L. Solti

Keyword(s):

Phase Transition ◽

Hydrostatic Pressure ◽

Low Temperature ◽

High Hydrostatic Pressure ◽

Room Temperature ◽

Freezing Point ◽

Significant Loss ◽

Embryo Cryopreservation ◽

Subzero Temperatures ◽

Survival Capacity

Cryoinjuries are almost inevitable during the freezing of embryos. The present study examines the possibility of using high hydrostatic pressure to reduce substantially the freezing point of the embryo-holding solution, in order to preserve embryos at subzero temperatures, thus avoiding all the disadvantages of freezing. The pressure of 210 MPa lowers the phase transition temperature of water to -21°C. According to the results of this study, embryos can survive in high hydrostatic pressure environment at room temperature; the time embryos spend under pressure without significant loss in their survival could be lengthened by gradual decompression. Pressurisation at 0°C significantly reduced the survival capacity of the embryos; gradual decompression had no beneficial effect on survival at that stage. Based on the findings, the use of the phenomena is not applicable in this form, since pressure and low temperature together proved to be lethal to the embryos in these experiments. The application of hydrostatic pressure in embryo cryopreservation requires more detailed research, although the experience gained in this study can be applied usefully in different circumstances.

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Wspólnota semantyczno-leksykalna języków europejskich. O monografii: А.А. Кретов, О.М. Воевудская, И.А. Меркулова, В.Т. Титов, Единство Европы по данным лексики (Воронеж: Издательский дом ВГУ, 2016, ss. 413 [1])

Acta Polono-Ruthenica ◽

10.31648/apr.2536 ◽

2018 ◽

Vol 2 (XXIII) ◽

pp. 121-133

Author(s):

Katarzyna Wojan

Keyword(s):

Comparative Research ◽

Lexical Semantics ◽

Research Field ◽

Original Research ◽

Linguistic Typology ◽

Lexical Semantic ◽

Theoretical Linguistics ◽

Research Concept ◽

New Research

This article outlines the original research concept developed and applied by the Voronezh researchers, which brought both quantitative and qualitative results to the field of linguistic comparative research. Their monograph is devoted to the macrotypological unity of the lexical semantics of the languages in Europe. In addition, semantic stratification of Russian and Polish lexis has been analyzed. Their research concept is now known as the “lexical-semantic macrotypological school of Voronezh.” Representatives of this school have created a new research field in theoretical linguistics – a lexical-semantic language macrotypology as a branch of linguistic typology. The monograph has been widely discussed and reviewed in Russia.

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Temperature Influence on Performance of Oxidation Ponds

Water Science & Technology ◽

10.2166/wst.1991.0115 ◽

1991 ◽

Vol 24 (5) ◽

pp. 85-96 ◽

Cited By ~ 2

Author(s):

Qingliang Zhao ◽

Zijie Zhang

Keyword(s):

Mathematical Model ◽

Temperature Influence ◽

Field Scale ◽

Experiment Data ◽

Computer Technique ◽

Oxidation Pond ◽

Optimum Model ◽

Oxidation Ponds ◽

The Mathematical Model ◽

The Relationship

By means of simulated tests of a laboratory–scale oxidation pond model, the relationship between BOD5 and temperature fluctuation was researched. Mathematical modelling for the pond's performance and K1determination were systematically described. The calculation of T–K1–CeCe/Ci) was complex but the problem was solved by utilizing computer technique in the paper, and the mathematical model which could best simulate experiment data was developed. On the basis of experiment results,the concept of plug–ratio–coefficient is also presented. Finally the optimum model recommended here was verified with the field–scale pond data.

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Judicial geography as a legal science and academic discipline

Tyumen State University Herald Social Economic and Law Research ◽

10.21684/2411-7897-2019-5-4-122-137 ◽

2019 ◽

Vol 5 (4) ◽

pp. 122-137

Author(s):

Almaz F. Abdulvaliev

Keyword(s):

Criminal Law ◽

Climatic Factors ◽

Academic Discipline ◽

Preliminary Investigation ◽

Criminal Procedure ◽

Mapping Method ◽

Research Field ◽

Point Of View ◽

Theoretical Development ◽

New Research

This article presents the conceptual foundations for the formation of a new research field “Judicial Geography”, including the prerequisites for its creation, academic, and theoretical development, both in Russia and abroad. The purpose of the study is to study the possibility of applying geographical methods and means in criminal law, criminal procedure, and in judicial activity in general via the academic direction “Judicial Geography”. The author describes in detail the main elements of judicial geography and its role and significance for such legal sciences, as criminal law, criminal procedure, criminalistics, and criminology among others. The employed research methods allow showing the main vectors of the development of judicial geography, taking into account the previous achievements of Russian and worldwide academics. The author indicates the role and place of judicial geography in the system of legal sciences. This study suggests a concept of using scientific geographical methods in the study of various legal phenomena of a criminal and criminal-procedural nature when considering the idea of building judicial bodies and judicial instances, taking into account geographical and climatic factors. In this regard, the author advises to introduce the special course “Judicial Geography”, which would allow law students to study the specifics of the activities of the judiciary and preliminary investigation authorities from a geographical point of view, as well as to use various geographical methods, including the mapping method, in educational and practical activities. The author concludes that forensic geography may become a new milestone for subsequent scientific research in geography and jurisprudence.

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Evidence for low-temperature antiferromagnetic phase transition in Ising singlet magnet KTb(WO4)2

Low Temperature Physics ◽

10.1063/1.3674200 ◽

2011 ◽

Vol 37 (12) ◽

pp. 1048-1049 ◽

Cited By ~ 1

Author(s):

E. Khatsko ◽

C. Paulsen ◽

A. Rykova

Keyword(s):

Phase Transition ◽

Low Temperature ◽

Antiferromagnetic Phase

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Reversible displacive phase transition in [Ni(en)3]2+(NO3−)2: a potential temperature calibrant for area-detector diffractometers

Journal of Applied Crystallography ◽

10.1107/s0021889802021878 ◽

2003 ◽

Vol 36 (1) ◽

pp. 141-145 ◽

Cited By ~ 16

Author(s):

L. J. Farrugia ◽

P. Macchi ◽

A. Sironi

Keyword(s):

Phase Transition ◽

Transition Temperature ◽

Low Temperature ◽

Potential Temperature ◽

Rapid Decrease ◽

Data Sets ◽

Area Detector ◽

Displacive Phase Transition ◽

Orientation Matrix ◽

Bruker Smart Apex

The coordination complex [Ni(en)3]2+(NO{}_{3}^{- })2(en = 1,2-diaminoethane) undergoes a sharp reversible displacive phase transition at ∼109 K, changing space group fromP6322 above the transition temperature toP6522 below. The phase change is accompanied by a tripling of thecaxis on cooling, resulting in an easy detection of the transition in images from area-detector diffractometers. The transition has been followed using a Nonius KappaCCD and a Bruker SMART APEX CCD. Data sets were collected over the temperature range 100–113 K and integrated using the low-temperature orientation matrix. Reflections withl≠ 3nshow a smooth and rapid decrease in intensity to zero on warming from 106.5 to 111 K. The results are reproducible to within ±2 K in two laboratories and suggest that this compound may be useful as a liquid-nitrogen cryo-calibrant for diffraction instruments equipped with area detectors.

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