A Fluidity-Temperature Relationship for Liquids

1973 ◽  
Vol 95 (2) ◽  
pp. 236-241
Author(s):  
T. F. Ford ◽  
C. R. Singleterry
Keyword(s):  
Interpolation Formula ◽  
Absolute Temperature ◽  
Temperature Relationship ◽  
Organic Liquids ◽  
Low Viscosity ◽  
Linear Relationships ◽  
Temperature Ranges ◽  
The Absolute ◽  
The Relationship

Many relationships between viscosity or its reciprocal, fluidity, and temperature have been proposed for liquids. None except the empirically modified ASTM chart have proven satisfactory over extended temperature ranges. We here note that by plotting the kinematic fluidity (φkin) against the square of the absolute temperature (deg K2) we obtain linear relationships for a wide variety of organic liquids at kinematic viscosities less than about 1.67 centistokes (or fluidities above about 0.60 reciprocal centistokes). The generality of the relationship appears to justify the use of the equation, φkin=a+bT2, as an interpolation formula for organic liquids in the low viscosity region.

Gas Laws

2009 ◽  
Author(s):  
Christopher O. Oriakhi
Keyword(s):  
Absolute Temperature ◽  
Absolute Zero ◽  
Standard Temperature ◽  
Gas Laws ◽  
Temperature Scales ◽  
Straight Line ◽  
Temperature And Pressure ◽  
The Absolute ◽  
The Relationship ◽  
Boyle’S Law

Volumes and densities of gases vary significantly with changes in pressure and temperature. This means that measurements of the volumes of gases will likely vary from one laboratory to another. To correct for this, scientists have adopted a set of standard conditions of temperature and pressure (STP) as a reference point in reporting all measurements involving gases. They are 0°C (or 273 K) and 760mmHg or 1 atm (or 1.013×105 N m−2 in S.I. units). Therefore standard temperature and pressure, as used in calculations involving gases, are defined as 0°C (or 273 K) and 1 atmosphere (or 760 torr). (Note: For calculations involving the gas laws, temperature must be in K.) Boyle’s law states that the volume of a given mass of gas at constant temperature is inversely proportional to the pressure. The law can be expressed in mathematical terms: V α 1/P or PV = k at constant n and T Since P×V = constant, problems dealing with P–V relationships can be solved by using the simplified equation: P1V1 = P2V2 Here P1, V1 represent one set of conditions and P2, V2 represent another set of conditions for a given mass of gas. Charles’s law states that the volume of a given mass of gas is directly proportional to its absolute temperature. So if the absolute temperature is doubled, say from 300 K to 600 K, the volume of the gas will also double. A plot of the volume of a gas versus its temperature (K) gives a straight line. A notable feature of such a plot is that the volume of all gases extrapolates to zero at the same temperature, −273.2◦C. This point is defined as 0 K, and is called absolute zero. Thus, the relationship between the Kelvin and Celsius temperature scales is given as: K = 0°C + 273. Scientists believe that the absolute zero temperature, 0 K, cannot be attained, although some laboratories have reported producing 0.0001 K.

scholarly journals Magnetic double-refraction in liquids. part I.—benzene and its derivatives

1927 ◽  
Vol 113 (765) ◽  
pp. 511-519 ◽  
Keyword(s):  
Magnetic Field ◽  
Refractive Index ◽  
Incident Light ◽  
Wave Length ◽  
Absolute Temperature ◽  
Organic Liquids ◽  
Detectable Effect ◽  
Double Refraction ◽  
Absolute Value ◽  
The Absolute

Many organic liquids exhibit a feeble double-refraction when they are placed in a strong magnetic field and a beam of light traverses the substances in a direction transverse to the lines of force. The magnitude of this effect, which was discovered in 1907 by Cotton and Mouton, depends very largely on the chemical structure of the molecule. Hydrocarbons belonging to the aliphatic series and the aromatic series are strikingly different in their behaviour; hexane, for instance, showing no detectable effect, while benzene is an example of a liquid showing a measurable double-refraction. We propose in the series of papers of which this is the first, to discuss this phenomenon in its relation to the structure of molecules and their magnetic properties. For this purpose we shall use the theory of Langevin, which explains magnetic double-refraction as an effect arising from the orientative action of the field on the molecules (assumed to be magnetically and optically anisotropic) and connects the absolute value of the Cotton-Mouton constant with the values of the optical refractivity and of the magnetic susceptibility of the molecule along three mutually perpendicular axes. To enable the formula of Langevin to be used for the purpose of calculating the absolute value of the Cotton-Mouton constant, it is necessary to have data concerning, firstly, the magnetic character of the molecule, and, secondly, its optical anisotropy. In regard to the latter, we propose to utilise the data obtained from observations on light-scattering in the liquids concerned. In regard to the magnetic anisotropy of the molecules, we shall endeavour to connect the indications furnished by the data on magnetic double-refraction with considerations of atomic and mole-cular structure and the well-known theory of diamagnetism, also due to Langevin. We shall here merely quote the formula due to Langevin, the derivation of which is very conveniently set out in a recent article by Debye. The Cotton-Mouton constant Cm of double-refraction is given by the relation C m ═n p ─n q /λH 2 ═3(n 0 ─1 2 /80Пn 0 λKT v .[(A─B)(A'B')+(B─C) (B'─C')+(C─A)(C'─A')/(A+B+C) 2 ,1 Where A, B, C are the moments induced along the three mutually perpendicular axes of the optical ellipsoid of the molecule by unit electric force in the incident light-waves, acting respectively along the three axes, and A', B', C' are the magnetic moments induced in the molecule by unit magnetic force acting in the same three directions. H is the acting magnetic field, λ is the wave-length of the light, k is the Boltzmann constant, T the absolute temperature, v the number of molecules per unit volume, n 0 the refractive index of the liquid outside the field, and n p and n q are the principal refractive indices in the field. The quantities A, B, C are connected with the refractive index n 0 of the liquid by the relation.

Rola Avarského Kaganátu Pri Vzniku Slovenčiny

2018 ◽  
Vol 69 (2) ◽  
pp. 199-236
Author(s):  
Martin Braxatoris ◽  
Michal Ondrejčík
Keyword(s):  
Slavic Language ◽  
The West ◽  
The North ◽  
Danube Region ◽  
The Absolute ◽  
North Edge ◽  
The Relationship ◽  
Slovak Language

Abstract The paper proposes a basis of theory with the aim of clarifying the casual nature of the relationship between the West Slavic and non-West Slavic Proto-Slavic base of the Slovak language. The paper links the absolute chronology of the Proto-Slavic language changes to historical and archaeological information about Slavs and Avars. The theory connects the ancient West Slavic core of the Proto-Slavic base of the Slovak language with Sclaveni, and non-West Slavic core with Antes, which are connected to the later population in the middle Danube region. It presumes emergence and further expansion of the Slavic koiné, originally based on the non-West Slavic dialects, with subsequent influence on language of the western Slavic tribes settled in the north edge of the Avar Khaganate. The paper also contains a periodization of particular language changes related to the situation in the Khaganate of that time.

scholarly journals Lack of an association between gallstone disease and bilirubin levels with risk of colorectal cancer: a Mendelian randomisation analysis

2021 ◽  
Author(s):  
Richard Culliford ◽  
Alex J. Cornish ◽  
Philip J. Law ◽  
Susan M. Farrington ◽  
Kimmo Palin ◽  
...  
Keyword(s):  
Colorectal Cancer ◽  
Large Scale ◽  
Causal Effect ◽  
Gallstone Disease ◽  
Epidemiological Studies ◽  
Mendelian Randomisation ◽  
Linear Relationships ◽  
Potential Risk Factors ◽  
The Relationship ◽  
Circulating Levels

Abstract Background Epidemiological studies of the relationship between gallstone disease and circulating levels of bilirubin with risk of developing colorectal cancer (CRC) have been inconsistent. To address possible confounding and reverse causation, we examine the relationship between these potential risk factors and CRC using Mendelian randomisation (MR). Methods We used two-sample MR to examine the relationship between genetic liability to gallstone disease and circulating levels of bilirubin with CRC in 26,397 patients and 41,481 controls. We calculated the odds ratio per genetically predicted SD unit increase in log bilirubin levels (ORSD) for CRC and tested for a non-zero causal effect of gallstones on CRC. Sensitivity analysis was applied to identify violations of estimator assumptions. Results No association between either gallstone disease (P value = 0.60) or circulating levels of bilirubin (ORSD = 1.00, 95% confidence interval (CI) = 0.96–1.03, P value = 0.90) with CRC was shown. Conclusions Despite the large scale of this study, we found no evidence for a causal relationship between either circulating levels of bilirubin or gallstone disease with risk of developing CRC. While the magnitude of effect suggested by some observational studies can confidently be excluded, we cannot exclude the possibility of smaller effect sizes and non-linear relationships.

scholarly journals Simple empirical method for estimating lava-effusion rate using nighttime Himawari-8 1.6-µm infrared images

2021 ◽  
Vol 73 (1) ◽  
Author(s):  
Takayuki Kaneko ◽  
Atsushi Yasuda ◽  
Toshitsugu Fujii
Keyword(s):  
Lava Flow ◽  
Estimation Method ◽  
Simulation Software ◽  
Spectral Radiance ◽  
Effusion Rate ◽  
Actual Distribution ◽  
High Positive Correlation ◽  
Low Viscosity ◽  
Lava Effusion ◽  
The Relationship

AbstractThe effusion rate of lava is one of the most important eruption parameters, as it is closely related to the migration process of magma underground and on the surface, such as changes in lava flow direction or formation of new effusing vents. Establishment of a continuous and rapid estimation method has been an issue in volcano research as well as disaster prevention planning. For effusive eruptions of low-viscosity lava, we examined the relationship between the nighttime spectral radiance in the 1.6-µm band of the Himawari-8 satellite (R1.6Mx: the pixel value showing the maximum radiance in the heat source area) and the effusion rate using data from the 2017 Nishinoshima activity. Our analysis confirmed that there was a high positive correlation between these two parameters. Based on the linear-regression equation obtained here (Y = 0.47X, where Y is an effusion rate of 106 m3 day−1 and X is an R1.6Mx of 106 W m−2 sr−1 m−1), we can estimate the lava-effusion rate from the observation data of Himawari-8 via a simple calculation. Data from the 2015 Raung activity—an effusive eruption of low-viscosity lava—were arranged along the extension of this regression line, which suggests that the relationship is applicable up to a level of ~ 2 × 106 m3 day−1. We applied this method to the December 2019 Nishinoshima activity and obtained an effusion rate of 0.50 × 106 m3 day−1 for the initial stage. We also calculated the effusion rate for the same period based on a topographic method, and verified that the obtained value, 0.48 × 106 m3 day−1, agreed with the estimation using the Himawari-8 data. Further, for Nishinoshima, we simulated the extent of hazard areas from the initial lava flow and compared cases using the effusion rate obtained here and the value corresponding to the average effusion rate for the 2013–2015 eruptions. The former distribution was close to the actual distribution, while the latter was much smaller. By combining this effusion-rate estimation method with real-time observations by Himawari-8 and lava-flow simulation software, we can build a rapid and precise prediction system for volcano hazard areas.

scholarly journals Differential Influence of Age on the Relationship between Genetic Mismatch and A(H1N1)pdm09 Vaccine Effectiveness

Viruses ◽  
2021 ◽  
Vol 13 (4) ◽  
pp. 619
Author(s):  
Lirong Cao ◽  
Shi Zhao ◽  
Jingzhi Lou ◽  
Hong Zheng ◽  
Renee W. Y. Chan ◽  
...  
Keyword(s):  
Age Groups ◽  
The Elderly ◽  
Vaccine Effectiveness ◽  
Amino Acid Mutation ◽  
Epidemic Season ◽  
Vaccine Component ◽  
Linear Relationships ◽  
The Difference ◽  
Middle Aged Adults ◽  
The Relationship

Assessment of influenza vaccine effectiveness (VE) and identification of relevant influencing factors are the current priorities for optimizing vaccines to reduce the impacts of influenza. To date, how the difference between epidemic strains and vaccine strains at genetic scale affects age-specific vaccine performance remains ambiguous. This study investigated the association between genetic mismatch on hemagglutinin and neuraminidase genes and A(H1N1)pdm09 VE in different age groups with a novel computational approach. We found significant linear relationships between VE and genetic mismatch in children, young adults, and middle-aged adults. In the children’s group, each 3-key amino acid mutation was associated with an average of 10% decrease in vaccine effectiveness in a given epidemic season, and genetic mismatch exerted no influence on VE for the elderly group. We demonstrated that present vaccines were most effective for children, while protection for the elderly was reduced and indifferent to vaccine component updates. Modeling such relationships is practical to inform timely evaluation of VE in different groups of populations during mass vaccination and may inform age-specific vaccination regimens.

The specific heats of three paramagnetic salts at very low temperatures

1956 ◽  
Vol 237 (1210) ◽  
pp. 395-403 ◽  
Keyword(s):  
Specific Heat ◽  
Absolute Temperature ◽  
Magnesium Nitrate ◽  
Paramagnetic Resonance ◽  
Specific Heats ◽  
Ammonium Alum ◽  
Relaxation Measurements ◽  
Ferric Ammonium ◽  
The Absolute ◽  
Measured Specific Heat

The specific heats of three paramagnetic salts, neodymium magnesium nitrate, manganous ammonium sulphate and ferric ammonium alum, have been measured at temperatures below 1°K using the method of γ -ray heating. The temperature measurements were made in the first instance in terms of the magnetic susceptibilities of the salts, the relation of the susceptibility to the absolute temperature having been determined for each salt in earlier experiments. The γ -ray heatings gave the specific heat in arbitrary units. The absolute values of the specific heats were found by extrapolating the results of paramagnetic relaxation measurements at higher temperatures. The measured specific heat of neodymium magnesium nitrate is compared with the value calculated from paramagnetic resonance data, and good agreement is found.

Barth and Buddhism in the theology of Katsume Takizawa

2011 ◽  
Vol 64 (2) ◽  
pp. 195-210
Author(s):  
John Parratt
Keyword(s):  
Twentieth Century ◽  
The Self ◽  
Self Identity ◽  
Basic Relationship ◽  
The Absolute ◽  
The Relationship

AbstractKatsume Takizawa (1909–1984) was one of the most innovative of twentieth-century Japanese philosophical theologians. His study with Barth (1935) led him to attempt to bring together aspects of Barth's theology with concepts derived from Jodo-shin and Zen. He found in both religions a basic relationship between God and man which transcended both identity and distinction, which he expressed in Nishida's concept of the self-identity of the absolute contradiction. This relationship he called ‘Emmanuel 1’. The fulfilment of the relationship is ‘Emmanuel 2’ and is reflected for Christians in Jesus.

scholarly journals An Examination of the Effects of Change in Committee Chair on Audit Quality

2017 ◽  
Vol 6 (4) ◽  
pp. 52
Author(s):  
Izhar Haq ◽  
Teresa Lang ◽  
Hongkang Xu
Keyword(s):  
Audit Committee ◽  
Audit Quality ◽  
Financial Statements ◽  
Discretionary Accruals ◽  
Committee Chair ◽  
The Absolute ◽  
Predicted Values ◽  
The Relationship ◽  
A Company

This study uses GMI Ratings directorship data from 2008 to 2013 along with the associated financial data to examine the relationship between audit committee chair change with the absolute discretionary accruals in the financial statements of the reporting companies.  Our results suggest that audit committee chair change is positively associated with the absolute discretionary accruals.  Specifically, absolute discretionary accruals are significantly higher when there is a change in the audit committee chair.  These results are consistent with prior research that deviations from the predicted values of accruals is an indicator of “poor” audit quality.  An additional finding of this paper is that a person younger than 60 is more likely to be a new audit committee chair when there is a change and therefore will have less experience and contacts than the outgoing chair. An important implication of these results is that audit committee chair change can have a significant impact on the quality of the financial statements of a company as well as on the audit quality.

scholarly journals FINANCIAL VALUE OF UKRAINIAN PREMIER LEAGUE CLUBS IN RELATIONSHIP WITH FOOTBALL MIGRATION INDICATORS

2021 ◽  
Vol 6 (2) ◽  
pp. 184-195
Author(s):  
Sobol Eduard ◽  
Svatyev Andrii
Keyword(s):  
Football Players ◽  
Professional Football ◽  
Premier League ◽  
Linear Relationships ◽  
Football Clubs ◽  
Economic Support ◽  
And Migration ◽  
Quantitative Indicators ◽  
The Relationship ◽  
Generalization Of Data

Introduction. Indicators of financial and economic support and migration of football players create preconditions for the formation of a highly competitive sports environment in professional football clubs and in the Ukrainian Premier League. The aim of the study is to analyze the quantitative indicators of migration of football players in the Ukrainian Premier League in relation to the financial and economic support of professional football clubs and to systematize the results. Materials and methods: analysis and generalization of data of scientific and methodical literature sources and the Internet, pedagogical observations, content analysis of materials of official sites of professional football clubs of the Ukrainian Premier League, official sites of the Ukrainian Football Association and the Ukrainian Premier League, methods of mathematical statistics. Results. The relationship between the financial value of Ukrainian athletes and migrant footballers, who are declared in the competition of the Ukrainian Premier League of the season 2021-2022, is analyzed. Conclusions. Analysis of the financial value of professional football clubs of the Ukrainian Premier League in relation to the migration of football players allows us to state that the leaders of the sports rating are the most financially capable teams: «Shakhtar» (Donetsk) and «Dynamo» (Kyiv), with a total the transfer value of the players is € 179,700,000 and € 136,100,000 respectively. The average cost of a migrant player in the leading professional football clubs of the Ukrainian Premier League «Shakhtar» (Donetsk) is 8,800,000 €, «Dynamo» (Kyiv) ‒ 3,420,000 €. Analysis of the transfer value of domestic athletes and migrant footballers in the application letters of the Ukrainian Premier League shows the absence of direct and inverse linear relationships, which suggests the presence of complex multilevel dependencies that require processing by more complex mathematical and statistical methods and preliminary grouping of available experimental data

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