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Journal articles on the topic 'Polar parameters'

Author: Grafiati

Published: 25 May 2024

Last updated: 31 July 2025

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1

J K Pendharkar, J. K. Pendharkar, and Veena Khilnani. "Acoustic Parameters of Polar- Non polar Chemicals at Variable Frequencies." Indian Journal of Applied Research 3, no. 7 (2011): 588–90. http://dx.doi.org/10.15373/2249555x/july2013/186.

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2

Dierer, Silke, and Katharina Heinke Schluenzen. "In fluence parameters for a polar mesocyclone development." Meteorologische Zeitschrift 14, no. 6 (2005): 781–92. http://dx.doi.org/10.1127/0941-2948/2005/0077.

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3

Giese, Bernd, and Wolf Mehl. "Polar parameters for radical substituents." Tetrahedron Letters 32, no. 34 (1991): 4275–78. http://dx.doi.org/10.1016/s0040-4039(00)92147-6.

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4

McCarthy, Dennis D. "Requirements for Earth Rotation Parameters." Highlights of Astronomy 7 (1986): 63–64. http://dx.doi.org/10.1017/s1539299600006183.

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AbstractObservations of Earth orientation parameters (polar motion and Universal Time) have reached a level of accuracy which challenges the definition of the reference systems which these observations seek to relate. Observational accuracies of better than in polar motion and in Universal Time are now routinely available. Urgent requirements therefore exist now for the IAU to take a fresh look at the concepts and definitions of the reference systems as well as reference frames. Of particular concern are the definitons of the equinox, the terrestrial reference pole, the zero of longitude and s

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5

Zhao, Chen-Yang, Chi-Fai Cheung, and Wen-Peng Fu. "An Investigation of the Cutting Strategy for the Machining of Polar Microstructures Used in Ultra-Precision Machining Optical Precision Measurement." Micromachines 12, no. 7 (2021): 755. http://dx.doi.org/10.3390/mi12070755.

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In this paper, an investigation of cutting strategy is presented for the optimization of machining parameters in the ultra-precision machining of polar microstructures, which are used for optical precision measurement. The critical machining parameters affecting the surface generation and surface quality in the machining of polar microstructures are studied. Hence, the critical ranges of machining parameters have been determined through a series of cutting simulations, as well as cutting experiments. First of all, the influence of field of view (FOV) is investigated. After that, theoretical mo

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6

Golubkin, Pavel, Julia Smirnova, and Leonid Bobylev. "Satellite-Derived Spatio-Temporal Distribution and Parameters of North Atlantic Polar Lows for 2015–2017." Atmosphere 12, no. 2 (2021): 224. http://dx.doi.org/10.3390/atmos12020224.

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A list of North Atlantic polar lows was compiled for 2015–2017. A total of 131 polar lows were found by analyzing the Moderate Resolution Imaging Spectroradiometer (MODIS) infrared imagery and auxiliary information. The study region was additionally divided by the 20° W meridian to assess possible differences in the polar lows occurring in the western and eastern parts of the region. The highest polar low activity was found over the Barents Sea and the northern Norwegian Sea. A large number of polar lows over this region were dual or multiple. When considering such systems as a single event, m

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7

Ou, Shui-Ping, Sen Wang, Xu-Mei Zhou, and Ling Chen. "Solubility Behaviour of Baicalin in Polar and Non-Polar Solvents: Solubility Parameters Approach." Asian Journal of Chemistry 27, no. 7 (2015): 2401–5. http://dx.doi.org/10.14233/ajchem.2015.17854.

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8

Guthrie, J. Peter. "Concerning the distant polar interaction in free energies of transfer. An explanation and an estimation procedure." Canadian Journal of Chemistry 69, no. 12 (1991): 1893–903. http://dx.doi.org/10.1139/v91-274.

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For polyfunctional compounds, free energies of transfer from gas to aqueous solution require corrections for the interactions of polar groups (Distant Polar Interactions). These corrections can be made with very few adjustable parameters by using a model of the solvation process assuming hydrogen bonding is the major source of the effect on free energy of transfer for polar groups, and that hydrogen bonding is perturbed by polar effects, measured by Taft σ*. Parameters evaluated for polyfluoro, polychloro, and polybromo compounds successfully predicted the free energies of transfer for mixed p

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9

Tian, Zhuxin, and Yu Huang. "Transformation between polar and rectangular coordinates of stiffness and dampness parameters in hydrodynamic journal bearings." Friction 9, no. 1 (2020): 201–6. http://dx.doi.org/10.1007/s40544-019-0328-9.

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Abstract The stiffness and dampness parameters of journal bearings are required in rectangular coordinates for analyzing the stability boundary and threshold speed of oil film bearings. On solving the Reynolds equation, the oil film force is always obtained in polar coordinates; thus, the stiffness and dampness parameters can be easily obtained in polar coordinates. Therefore, the transformation between the polar and rectangular coordinates of journal bearing stiffness and dampness parameters is discussed in this study.

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10

Sobia, Iren. "Fluctuations of Solar Wind Parameters During Polar Reversal." American Journal of Astronomy and Astrophysics 3, no. 3 (2015): 56. http://dx.doi.org/10.11648/j.ajaa.20150303.15.

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11

van Leeuwen, M. E. "Derivation of Stockmayer potential parameters for polar fluids." Fluid Phase Equilibria 99 (August 1994): 1–18. http://dx.doi.org/10.1016/0378-3812(94)80018-9.

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12

Samantaray, B., M. K. Praharaj, B. R. Das, and S. P. Das. "Comparative Study of Molecular Interaction in Ternary Liquid Mixtures of Polar and Non-Polar Solvents." Journal of Scientific Research 14, no. 3 (2022): 917–29. http://dx.doi.org/10.3329/jsr.v14i3.57587.

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Ultrasonic velocity measurements, density measurements, and viscometric studies were conducted for the ternary mixture of pyridine and toluene separately with N, N-dimethylformamide (DMF) in butanol, at different temperatures and for different concentrations of component liquids. Using these basic experimental data, various acoustic and thermodynamic parameters, such as adiabatic compressibility (β), free length (Lf,), free volume (Vf), etc. were calculated. Also, Excess thermo-acoustical parameters were calculated from the experimentally measured data. The outcomes were expressed in terms of

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13

Dudev, T., and B. Galabov. "Relationship between infrared intensity theories: Electro-optical parameters and bond polar parameters." Spectrochimica Acta Part A: Molecular Spectroscopy 48, no. 8 (1992): 1153–63. http://dx.doi.org/10.1016/0584-8539(92)80126-h.

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14

Banachowicz, Andrzej, and Adam Wolski. "Determination of Ship Approach Parameters in the Polar Coordinates System." Reports on Geodesy and Geoinformatics 96, no. 1 (2014): 1–8. http://dx.doi.org/10.2478/rgg-2014-0001.

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Abstract An essential aspect of the safety of navigation is avoiding collisions with other vessels and natural or man made navigational obstructions. To solve this kind of problem the navigator relies on automatic anti-collision ARPA systems, or uses a geometric method and makes radar plots. In both cases radar measurements are made: bearing (or relative bearing) on the target position and distance, both naturally expressed in the polar coordinates system originating at the radar antenna. We first convert original measurements to an ortho-Cartesian coordinate system. Then we solve collision av

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15

Nitta, Tohru. "Learning Dynamics of a Single Polar Variable Complex-Valued Neuron." Neural Computation 27, no. 5 (2015): 1120–41. http://dx.doi.org/10.1162/neco_a_00729.

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This letter investigates the characteristics of the complex-valued neuron model with parameters represented by polar coordinates (called polar variable complex-valued neuron). The parameters of the polar variable complex-valued neuron are unidentifiable. The plateau phenomenon can occur during learning of the polar variable complex-valued neuron. Furthermore, computer simulations suggest that a single polar variable complex-valued neuron has the following characteristics in the case of using the steepest gradient-descent method with square error: (1) unidentifiable parameters (singular points)

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16

Pytela, Oldřich. "A new classification of solvents based on chemometric empirical scale of parameters." Collection of Czechoslovak Chemical Communications 55, no. 3 (1990): 644–52. http://dx.doi.org/10.1135/cccc19900644.

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The paper presents a classification of 51 solvents based on clustering in three-dimensional space formed by the empirical scale of PAC, PBC, and PPC parameters designed for interpretation of solvent effect on a model with cross-terms. For the classification used are the clustering methods of the nearest neighbour, of the furthest neighbour, of average bond, and the centroid method. As a result, the solvents have been divided into 8 classes denoted as: I - nonpolar-inert solvents (aliphatic hydrocarbons), IIp - nonpolar-polarizable (aromatic hydrocarbons, tetrachloromethane, carbon disulphide),

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17

Saynisch, J., M. Wenzel, and J. Schröter. "Assimilation of Earth rotation parameters into a global ocean model: excitation of polar motion." Nonlinear Processes in Geophysics 18, no. 5 (2011): 581–85. http://dx.doi.org/10.5194/npg-18-581-2011.

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Abstract. The oceanic contribution to Earth rotation anomalies can be manifold. Possible causes are a change of total ocean mass, changes in current speed or location and changes in mass distribution. To derive the governing physical mechanisms of oceanic Earth rotation excitation we assimilate Earth rotation observations with a global circulation ocean model. Before assimilation, observations of length of day and polar motion were transformed into estimates of ocean angular momentum. By using the adjoint 4D-VAR assimilation method we were able to reproduce these estimated time series. Althoug

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18

Formella, K., T. Braumann, and H. Elmenhorst. "The Influence of Different Filter Parameters on the Semivolatile Composition of Mainstream Smoke." Beiträge zur Tabakforschung International/Contributions to Tobacco Research 15, no. 3 (1992): 123–28. http://dx.doi.org/10.2478/cttr-2013-0627.

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AbstractThe semivolatile fraction of cigarette smoke contains the most important aroma and taste compounds which contribute to the smoker's enjoyment. Obviously, the semivolatile composition is strongly affected by cigarette filters and consequently by the material which is used for filter manufacturing. We have studied the effect of cellulose acetate and polypropylene as filter material on the smoke semivolatiles. Further, the effect of other parameters like pressure drop and the use of additives has been investigated. Smoke condensate was collected on a Cambridge filter pad, the semivolatile

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19

Castillo, Oscar Daniel Garibaldi, and Ana Beltrán. "Identificación de Parámetros de Desempeño de un UAV a Través de Vuelos de Prueba." KnE Engineering 3, no. 1 (2018): 482. http://dx.doi.org/10.18502/keg.v3i1.1452.

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The design and implementation of a autonomous navigation and control system for UAV, mandates simulating the system before in-flight testing. These simulations require a computational model of the aircraft, that can be obtained from the computation of aerodynamic parameters such as the drag polar. In this paper we present the identification of these parameters using two methods: one by flight testing techniques; the other by a combination of semi-empirical methods and computational fluid dynamics, dubbed the hybrid method. The hybrid method, which produces a parabolic polar drag, had the same

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20

Bruna, M., and C. J. W. Breward. "The influence of non-polar lipids on tear film dynamics." Journal of Fluid Mechanics 746 (April 4, 2014): 565–605. http://dx.doi.org/10.1017/jfm.2014.106.

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AbstractIn this paper we examine the effect that physiological non-polar lipids, residing on the surface of an aqueous tear film, have on the film evolution. In our model we track the evolution of the thickness of the non-polar lipid layer, the thickness of the aqueous layer and the concentration of polar lipids which reside at the interface between the two. We also utilise a force balance in the non-polar lipid layer in order to determine its velocity. We show how to obtain previous models in the literature from our model by making particular choices of the parameters. We see the formation of

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21

Flores, Marcos, Claudia Vergara, Tamar Toledo-Aquino, Jamie Ortiz-Viedma, and Jorge Barros-Velázquez. "Quality parameters during deep frying of avocado oil and extra-virgin olive oil." Quality Assurance and Safety of Crops & Foods 16, no. 4 (2024): 17–27. http://dx.doi.org/10.15586/qas.v16i4.1504.

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Avocado oil has a good thermal stability. However, there is a lack of knowledge about the behavior when hydrolysis is involved with oxidation processes. This study demonstrated potential for deep frying process of avocado oil. The behavior of cold-pressed olive oil and avocado oil in a domestic frying process with natural potatoes was studied. Both oils were subjected to successive frying cycles and the following chemical properties were analyzed: degree of acidity, peroxide value, p-anisidine value, total oxidation (TOTOX) value, polar compounds, total phe-nolic content, Fourier-transform inf

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22

Hanif, Muhammad, and Masoud Ardakani. "Polar Codes: Bounds on Bhattacharyya Parameters and Their Applications." IEEE Transactions on Communications 66, no. 12 (2018): 5927–37. http://dx.doi.org/10.1109/tcomm.2018.2867475.

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23

Szumilin, Krystyna, and Jacek J. Milczarek. "Physical Interpretation of Polar Order Parameters in Liquid Crystals." Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals 262, no. 1 (1995): 499–506. http://dx.doi.org/10.1080/10587259508033552.

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24

Staude, A., A. D. Schwope, and R. Schwarz. "System parameters of the long-period polar V1309 Ori." Astronomy & Astrophysics 374, no. 2 (2001): 588–98. http://dx.doi.org/10.1051/0004-6361:20010695.

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25

Fedosov, S. N., and A. E. Sergeeva. "Measuring of electrical relaxation parameters in polar polymer dielectrics." Journal of Electrostatics 30 (May 1993): 327–33. http://dx.doi.org/10.1016/0304-3886(93)90086-m.

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26

Panettieri, Enrico, Marco Montemurro, and Anita Catapano. "Blending constraints for composite laminates in polar parameters space." Composites Part B: Engineering 168 (July 2019): 448–57. http://dx.doi.org/10.1016/j.compositesb.2019.03.040.

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27

Aniceto, José P. S., Bruno Zêzere, and Carlos M. Silva. "Predictive Models for the Binary Diffusion Coefficient at Infinite Dilution in Polar and Nonpolar Fluids." Materials 14, no. 3 (2021): 542. http://dx.doi.org/10.3390/ma14030542.

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Experimental diffusivities are scarcely available, though their knowledge is essential to model rate-controlled processes. In this work various machine learning models to estimate diffusivities in polar and nonpolar solvents (except water and supercritical CO2) were developed. Such models were trained on a database of 90 polar systems (1431 points) and 154 nonpolar systems (1129 points) with data on 20 properties. Five machine learning algorithms were evaluated: multilinear regression, k-nearest neighbors, decision tree, and two ensemble methods (random forest and gradient boosted). For both p

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28

Puķīte, Jānis, Christian Borger, Steffen Dörner, Myojeong Gu, and Thomas Wagner. "OClO as observed by TROPOMI: a comparison with meteorological parameters and polar stratospheric cloud observations." Atmospheric Chemistry and Physics 22, no. 1 (2022): 245–72. http://dx.doi.org/10.5194/acp-22-245-2022.

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Abstract. Chlorine dioxide (OClO) is a by-product of the ozone-depleting halogen chemistry in the stratosphere. Although it is rapidly photolysed at low solar zenith angles (SZAs), it plays an important role as an indicator of the chlorine activation in polar regions during polar winter and spring at twilight conditions because of the nearly linear dependence of its formation on chlorine oxide (ClO). Here, we compare slant column densities (SCDs) of chlorine dioxide (OClO) retrieved by means of differential optical absorption spectroscopy (DOAS) from spectra measured by the TROPOspheric Monito

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29

Weltrowski, Marek, and Patricia I. Dolez. "Compatibilizer Polarity Parameters as Tools for Predicting Organoclay Dispersion in Polyolefin Nanocomposites." Journal of Nanotechnology 2019 (March 3, 2019): 1–9. http://dx.doi.org/10.1155/2019/1404196.

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Nanocomposites give an innovative method to increase the mechanical, thermal, and barrier performance of polymers. However, properly dispersing the nanoparticles in the polymer matrix is often key in achieving high performance, especially in the case of hydrophilic nanoparticles and hydrophobic polymers. For that purpose, nanoparticles may be functionalized with organic groups to increase their affinity with the polymer matrix. Compatibilizing agents may also be included in the nanocomposite formulation. This paper aims at identifying parameters relative to the compatibilizer polarity that wou

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30

Troshichev, O. A., N. A. Podorozhkina, and A. S. Janzhura. "Invariability of relationship between the polar cap magnetic activity and geoeffective interplanetary electric field." Annales Geophysicae 29, no. 8 (2011): 1479–89. http://dx.doi.org/10.5194/angeo-29-1479-2011.

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Abstract. The PC (polar cap) index characterizing the solar wind energy input into the magnetosphere is calculated with use of parameters α, β, and φ, determining the relationship between the interplanetary electric field (EKL) and the value of magnetic activity δF in the polar caps. These parameters were noted as valid for large and small EKL values, and as a result the suggestion was made (Troshichev et al., 2006) that the parameters should remain invariant irrespective of solar activity. To verify this suggestion, the independent sets of calibration parameters α, β, and φ were derived separ

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Li, Xiuhong, Xuejie Hao, Lizeyan Yin, et al. "Validation of GPS-Based Monitoring and Remote Sensing of Ice-Shelf and Ice-Sheet Movement Changes." Sensors 21, no. 23 (2021): 7822. http://dx.doi.org/10.3390/s21237822.

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The north and south poles of the earth (hereinafter referred to as the polar regions) are important components of the earth system. Changes in the material balance and movement of the polar ice shelf reflect the influence of the polar regions on global climate change and are also a response to global climate change. Through a comprehensive investigation of ice-shelf kinematics, with sufficient accuracy, it is possible to obtain ice-shelf elevation, movement-state data, ice-shelf material balance state, and the ice-shelf movement dynamics mechanism. Due to the extremely harsh environment in pol

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32

Sakwe, Sakwe Aloysius, Yeon Suk Jang, and Peter J. Wellmann. "Defect Etching of Non-Polar and Semi-Polar Faces in SiC." Materials Science Forum 556-557 (September 2007): 243–46. http://dx.doi.org/10.4028/www.scientific.net/msf.556-557.243.

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Wet chemical etching using molten KOH is the most frequently applied method to reveal structural defects in SiC. Until now etching kinetics of SiC in planes different from the polar cplane has not been reported. In this paper we report on defect etching of SiC in non-polar faces. Using a calibrated KOH defect-etching furnace with possibilities to set accurate etching temperatures we have etched SiC samples of various orientations to (i) study defect occurrence and their morphologies (ii) set KOH defect etching parameters for SiC for these orientations and (iii) investigate etching kinetics in

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33

Mason, Paul A., Natalie K. Wells, Mokhine Motsoaledi, Paula Szkody, and Emmanuel Gonzalez. "CRTS J035010.7 + 323230, a new eclipsing polar in the cataclysmic variable period gap." Monthly Notices of the Royal Astronomical Society 488, no. 2 (2019): 2881–91. http://dx.doi.org/10.1093/mnras/stz1863.

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ABSTRACT We report the discovery of a new eclipsing polar, CRTS J035010.7+323230 (hereafter CRTS J0350+3232). We identified this cataclysmic variable (CV) candidate as a possible polar from its multiyear Catalina Real-Time Transient Survey (CRTS) optical light curve. Photometric monitoring of 22 eclipses in 2015 and 2017 was performed with the 2.1-m Otto Struve Telescope at McDonald Observatory. We derive an unambiguous high-precision ephemeris. Strong evidence that CRTS J0350 + 3232 is a polar comes from optical spectroscopy obtained over a complete orbital cycle using the Apache Point Observ

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Kolmachikhina, E. B., E. A. Ryzhkova, and D. V. Dmitrieva. "Influence of Zinc Sulfide Wetting in Surfactants Presence on Leaching Parameters." Solid State Phenomena 284 (October 2018): 737–42. http://dx.doi.org/10.4028/www.scientific.net/ssp.284.737.

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This paper is describing an investigation of surfactants influence on zinc sulfide wetting by non-polar liquids and sphalerite concentrates pressure leaching parameters. Zinc sulfide preferential wettability by oil was tested in presence anionic surfactants with different chemical structures. Interfacial tension was determinated by the maximum liquid drop volume method. It allows to determine surfactant potential effectivity on pressure leaching of sphalerite concentrate. It is found that SDBS decreases zinc sulfide wettability by non-polar liquids in a greater degree than SDS and Ls. Combined

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35

Yagova, Nadezda, Natalia Nosikova, Lisa Baddeley, et al. "Non-triggered auroral substorms and long-period (1–4 mHz) geomagnetic and auroral luminosity pulsations in the polar cap." Annales Geophysicae 35, no. 3 (2017): 365–76. http://dx.doi.org/10.5194/angeo-35-365-2017.

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Abstract. A study is undertaken into parameters of the polar auroral and geomagnetic pulsations in the frequency range 1–4 mHz (Pc5∕Pi3) during quiet geomagnetic intervals preceding auroral substorms and non-substorm background variations. Special attention is paid to substorms that occur under parameters of the interplanetary magnetic field (IMF) conditions typical for undisturbed days (non-triggered substorms). The spectral parameters of pulsations observed in auroral luminosity as measured by a meridian scanning photometer (Svalbard) in the polar cap and near the polar boundary of the auror

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36

Bilgiç, Ceyda. "Determination of the surface properties of kaolinite by inverse gas chromatography." Water Science and Technology 2017, no. 2 (2018): 319–28. http://dx.doi.org/10.2166/wst.2018.136.

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Abstract Inverse gas chromatography (IGC) was applied to characterize the surface of kaolinite. The adsorption thermodynamic parameters (the standard enthalpy (∆H0), entropy (∆S0) and free energy of adsorption (∆G0), the dispersive component of the surface energy (γsd), and the acid/base character of kaolinite surface were estimated by using the retention time of different non-polar and polar probes at infinite dilution region. The specific free energy of adsorption (∆Gsp), the specific enthalpy of adsorption (∆Hsp), and the specific entropy of adsorption (∆Ssp) of polar probes on kaolinite we

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Liu, Yixiao, Bo Wang, Jianguo Yan, Shangbiao Sun, Wanling Yang, and Jean-Pierre Barriot. "Mars Orientation Parameters Estimation with Simulated Same Beam Interferometry." Astronomical Journal 170, no. 1 (2025): 25. https://doi.org/10.3847/1538-3881/add5ec.

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Abstract The accurate determination of Mars orientation parameters (MOP) is essential for investigating the internal structure, seasonal variations of polar dry ice, and dynamic evolution of Mars. Current methods rely on Doppler and range tracking between Earth ground station and Mars lander, which are constrained by ionospheric, tropospheric and other errors. Same-beam interferometry (SBI), employing two Earth ground stations simultaneous to observe two Mars landers, effectively mitigates common-mode errors by leveraging differential phase measurements. We evaluate the accuracy enhancement of

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38

Pyatin, Ilya, Juliy Boiko, and Oleksander Eromenko. "Algorithmization and Hardware Implementation of Polar Coding for 5G Telecommunications." Transport and Telecommunication Journal 25, no. 3 (2024): 300–310. http://dx.doi.org/10.2478/ttj-2024-0022.

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Abstract The article explores a recursive algorithm for determining Bhattacharyya parameters, which is a measure of the degree of channel polarization for telecommunications with polar coding. A method is given for determining the positions of information and fixed bits in a polar code. The principles of constructing a polar encoder and a polar decoder successive cancellation are considered. The Field-Programmable Gate Array implementation of the successive cancellation list decoder is considered. Experimental studies of the construction of a polar code using Gaussian approximation have been c

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39

Zhu, Wei-Hong, Shao-Tang Zhang, and Zheng-Biao Li. "An analysis of heat conduction in polar bear hairs using one-dimensional fractional model." Thermal Science 20, no. 3 (2016): 785–88. http://dx.doi.org/10.2298/tsci1603785z.

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Hairs of a polar bear are of superior properties such as the excellent thermal protection. The polar bears can perennially live in an extremely cold environment and can maintain body temperature at around 37 ?C. Why do polar bears can resist such cold environment? Its membrane-pore structure plays an important role. In the previous work, we established a 1-D fractional heat conduction equation to reveal the hidden mechanism for the hairs. In this paper, we further discuss solutions and parameters of the equation established and analyze heat conduction in polar bear hairs.

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40

Munoz, V. A., R. J. Mikula, C. Payette, and W. W. Lam. "Microscopic versus process parameters in heavy-oil upgrading." Proceedings, annual meeting, Electron Microscopy Society of America 50, no. 1 (1992): 366–67. http://dx.doi.org/10.1017/s042482010012223x.

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The transformation of high molecular weight components present in heavy oils into useable liquid fuels requires their decomposition by means of a variety of processes. The low molecular weight species produced recombine under controlled conditions to generate synthetic fuels. However, an important fraction undergo further recombination into higher molecular weight components, leading to the formation of coke. The optical texture of the coke can be related to its originating components. Those with high sulfur and oxygen content tend to produce cokes with small optical texture or fine mosaic, wh

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41

Monder, Hila, Leo Bielenki, Hanna Dodiuk, Anna Dotan, and Samuel Kenig. "Poly (Dimethylsiloxane) Coating for Repellency of Polar and Non-Polar Liquids." Polymers 12, no. 10 (2020): 2423. http://dx.doi.org/10.3390/polym12102423.

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The wettability of poly (dimethylsiloxane) (PDMS) coating on plasma-treated glass was studied at room temperature using polar and non-polar liquids. The wettability was investigated regarding the liquids’ surface tensions (STs), dielectric constants (DCs) and solubility parameters (SPs). For polar liquids, the contact angle (CA) and contact angle hysteresis (CAH) are controlled by the DCs and non-polar liquids by the liquids’ STs. Solubility parameter difference between the PDMS and the liquids demonstrated that non-polar liquids possessed lower CAH. An empirical model that integrates the inte

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42

Misra, Rajni, Amar Singh, J. P. Shukla, and M. C. Saxena. "Complex Formation and Associated Parameters in Various Non-Polar Solvents." Physics and Chemistry of Liquids 15, no. 1 (1985): 49–58. http://dx.doi.org/10.1080/00319108508081003.

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43

Morita, Terumitsu, Branka M. Ladanyi, and James T. Hynes. "Polar solvent contributions to activation parameters for model ionic reactions." Journal of Physical Chemistry 93, no. 4 (1989): 1386–92. http://dx.doi.org/10.1021/j100341a041.

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44

García-Haro, Francisco Javier, Manuel Campos-Taberner, Jordi Muñoz-Marí, et al. "Derivation of global vegetation biophysical parameters from EUMETSAT Polar System." ISPRS Journal of Photogrammetry and Remote Sensing 139 (May 2018): 57–74. http://dx.doi.org/10.1016/j.isprsjprs.2018.03.005.

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Krinski, Ingryd Mayer, Vinícius Reisdorfer Leite, Luis Mauro Moura, and Viviana Cocco Mariani. "Critical Extraction Parameters for Maximizing Oil Yield from Spent Coffee Grounds." Energies 18, no. 6 (2025): 1346. https://doi.org/10.3390/en18061346.

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Coffee is one of the most consumed beverages worldwide, producing approximately 6 million tons of spent coffee grounds (SCG) annually, which are often discarded in landfills. SCG contains 12–16% dry basis oil, which can be recovered in various industrial processes, promoting a more circular and sustainable economy. The efficient reuse of SCG depends on the extraction methods employed. This study investigates the influence of key parameters—solvent type, extraction time, temperature, and particle size—on oil extraction, and evaluates the oil quality using FTIR. Scanning electron microscopy (SEM

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Zhang, Yu, Jing Li, and Libo Zhou. "The Relationship between Polar Vortex and Ozone Depletion in the Antarctic Stratosphere during the Period 1979–2016." Advances in Meteorology 2017 (2017): 1–12. http://dx.doi.org/10.1155/2017/3078079.

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As the most prominent feature of the polar stratosphere, polar vortex results in widespread changes in the climate system, especially in the ozone variation. In this study, the linkage between polar vortex and ozone depletion in Antarctic stratosphere during the period 1979–2016 is investigated; we calculated the averaged total column ozone within the polar vortex based on the vortex edge (−28.8 PVU PV contour) instead of the geographical region defined by latitude and longitude. Results from the spatial patterns of ozone and polar vortex suggest that the morphological changes of polar vortex

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Zhang, Yin Yong, Jian Guo Zhao, Lu Ping Ma, Yue Jin Ma, and Jian Jun Hao. "Process Optimization of Reaction Nitrogen Arc Welding Cladding TiCN/Fe Metal Ceramic Composite Coating." Applied Mechanics and Materials 217-219 (November 2012): 1279–82. http://dx.doi.org/10.4028/www.scientific.net/amm.217-219.1279.

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In order to research the technique of reaction nitrogen arc cladding, the 5 factors 4 levels orthogonal experiments have been designed, and the effects of process parameters (such as cladding current, tungsten polar diameter, nitrogen flow, cladding speed and precoated thickness) on coating wear resistance performance were discussed. The process parameters were optimized as follows: cladding current 200 A, tungsten polar diameter 1.6 mm, nitrogen flow 12L. min-1, cladding speed 2 mm.s-1, precoated thickness 1.5 mm.

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Zêzere, Bruno, Inês Portugal, José R. B. Gomes, and Carlos M. Silva. "Modeling Tracer Diffusion Coefficients of Any Type of Solutes in Polar and Non-Polar Dense Solvents." Materials 15, no. 18 (2022): 6416. http://dx.doi.org/10.3390/ma15186416.

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In this work, a simple two-parameters correlation based on the Rice and Gray, Lennard-Jones, and Stockmayer theories was devised for the calculation of binary diffusion coefficients (D12) of any type of solutes at infinite dilution in polar and non-polar solvents. This equation can be relevant for systems with polar solvents, since most models in the literature fail when strong intermolecular forces predominate in solution. The new correlation embodies the Stockmayer potential without requiring the dipole moments of any component, which significantly enlarges its application. It was validated

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Ohshima, Hiroyuki, and Shin-ichi Takeda. "A New Method for Calculating the Hamaker Constant Based on the Hansen Solubility Parameters for Non-Polar Liquids." Colloids and Interfaces 8, no. 2 (2024): 14. http://dx.doi.org/10.3390/colloids8020014.

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A simple relationship between the Hamaker constant and the Hansen solubility parameters for non-polar liquids is derived by combining a Hamaker constant/surface tension relationship derived by Israelachvili and a Hansen solubility parameters/surface tension relationship derived by Abbott. With this relationship, one can easily estimate the Hamaker constant of non-polar liquids on the basis of the database of the Hansen solubility parameters. This is an entirely new method for calculating the Hamaker constant without recourse to data on the frequency-dependent dielectric permittivity of those s

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Avanesov, G. A., B. S. Zhukov, M. V. Mikhailov, and B. G. Sherstyukov. "Cosmic Regulators of the Earth’s Climate." Астрономический вестник 57, no. 6 (2023): 521–31. http://dx.doi.org/10.31857/s0320930x23060014.

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A discussion is presented of the effects generated by the imbalance between the insolation energy of polar-day zones and the radiation energy of polar-night zones on multicentennial changes in the Earth’s climate. The dependence of this imbalance on the Earth’s orbital parameters is determined. The energy imbalance curves are compared with the known temperature curves for the polar regions, which have been estimated from the results of an analysis of ice cores taken in Antarctica and Greenland. The curves clearly reveal a difference between the contributions of cosmic and terrestrial factors t

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