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  • 1
    Electronic Resource
    Electronic Resource
    Enhancement of magneto-optical Kerr effect in Fe/PbTe and Fe/Pb bilayer films (1991)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 70 (1991), S. 5045-5048 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The magneto-optical polar Kerr rotation spectra and reflectivity spectra in the wavelength region 400–700 nm are studied for Fe/PbTe and Fe/Pb bilayer films. Large Kerr rotation enhancement with high reflectivity was observed. The experimental data of reflectivity are nearly consistent with theoretical calculation using Fresnel's equations. However, the observed Kerr rotation spectra behavior is quite different from that expected by macroscopic optical theory.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.349010
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  • 2
    Electronic Resource
    Electronic Resource
    Simulation Study of Thermal Buoyance Influence on Flow Characteristic in Single Outlet Tundish (2005)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 475-479 (Jan. 2005), p. 3215-3218 
    Details
    ISSN: 1662-9752
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: The distribution of velocity field in single outlet tundish has been simulated throughnumerical solution of turbulent Navier-Stokes equation in conjunction with e − k turbulence model. The theoretical predicted results have compared with experimental ones, and excellent agreement between them has been achieved. Through comparing the computational data using coupled heat and flow method with that of using uncoupled method, it indicated that it’s necessary to utility the coupled heat and flow method in big size tundish since the thermal buoyance should not be ignored in the calculation
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/09/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.475-479.3215.pdf
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  • 3
    Electronic Resource
    Electronic Resource
    An addition scheme of heat capacities of linear macromolecules (1986)
    Springer
    Journal of thermal analysis and calorimetry 31 (1986), S. 1319-1342 
    Details
    ISSN: 1572-8943
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Das früher entwickelte Additionsschema für Wärmekapazitäten wird auf Makromoleküle erweitert, die Nicht-C-Bindungen im Stützgerüst enthalten. Tabellen für 31 Gruppen sind angegeben. Von 713 Meßdaten wurden für Gruppenbeiträge, für die mehr als ein Meßwert zur Verfügung stand, Mittelwerte berechnet, wobei sich eine Abweichung von 0.1±1.5% (interne Konsistenz) ergab. Berechnete Wärmekapazitäten von Homopolymeren und Kopolymeren, für die unabhängige Messungen ausgeführt wurden, weisen einen mittleren Fehler von 0.60% bei einer Standardabweichung von 2.35% auf (177 Meßwerte).
    Abstract: Резюме Развитая ранее аддит ивная схема расчета теплоемкостей приме нена к макромолекула м, не содержащим углеро дных связей в остове м олекулы. Приведены таблицы дл я 31 группы. 713 точечных данных, изме ренных более чем один раз и усредненных для груп повых вкладов, показали отклонение 0.1±1.58% (внутренняя совмес тимость). Теплоемкости для гом ополимеров и сополимеров, вычисл енные на основе незав исимых измерений, показали с редние ошибки 0,60% и стандартно е отклонение ±2,35% (177 точеч ных данных).
    Notes: Abstract The prior developed addition scheme of heat capacities is expanded to macromolecules that contain non-C-bonds in the backbone. Tables for 31 groups are given. 713 data points which have been averaged for group contributions for which more than one measurement was available showed a deviation of 0.1±1.5% (internal consistency). Calculated heat capacities of homopolymers and copolymers for which independent measurements have been made showed average errors of 0.60% and a standard deviation of ±2.35% (177 data points).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01914644
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  • 4
    Electronic Resource
    Electronic Resource
    An addition scheme of heat capacities of linear macromolecules. Carbon backbone polymers (1986)
    Springer
    Journal of thermal analysis and calorimetry 31 (1986), S. 421-445 
    Details
    ISSN: 1572-8943
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Es wird gezeigt, daß Wärmekapazitäten von aus Hauptketten mit ausschließlich C-C-Einfachbindungen bestehenden Makromolekülen aus geeigneten Beiträgen der substituierten Kohlenstoffatome mit einer Genauigkeit bis etwa −0.2±2.5% (155 Datenpunkte) berechnet werden können, was der experimentellen Genauigkeit nahe kommt. Wärmekapazitätsbeiträge von 42 Gruppen wurden über den vollen Meßbereich hinweg und durch sinnvolle Extrapolation bestimmt und angegeben. Die Zuverlässigkeit des Additionsschemas wurde in 16 Meßreihen an Homopolymeren, Kopolymeren und Mischungen getestet. Das Additionsschema ist für alle diese verschiedenen Anordnungen der konstitutionellen Gruppen zutreffend. Die Grundlagen des Additionsschemas werden diskutiert.
    Abstract: Резюме Показано, что теплоем косщи линейных макромолекул, состоя щих только из углерод углерод одинарных связей, мог ут быть вычислены, исх одя из отдельных вкладов замешенных атомов углерода, с точ ностью около −0,2 ±2,5% (155 точ ечных данных), что соответст вует экспериментальной т очногти. Теплоемкост и 42 групп-вкладов привед ены в широкой области измерений и дана их пр иемлемая экстраполя ция. Качество этой аддити вной схемы проверено на 16 серии измерений гомо полимеров, сополимер ов и смесей. Аддитивная схема спр аведлива для всех различных типов сочетания этих соста вных групп. Обсуждены основы пре дложенной аддитивной схемы.
    Notes: Abstract It is shown that heat capacities of linear macromolecules consisting of all-carbon single-bonded backbones can be calculated from the appropriate contributions of substituted carbon atoms to a precision of about − 0.2±2.5% (155 data points), which is similar to the experimental precision. Heat capacity contributions of 42 groups are given over the full range of measurement and reasonable extrapolation. The quality of the addition scheme is tested on 16 series of measurements on homopolymers, copolymers and blends. The addition scheme works for all these different states of aggregation of the constituent groups. The basis of the addition scheme is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01911074
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  • 5
    Electronic Resource
    Electronic Resource
    Thermodynamic properties in the liquid state of high melting polymers containing phenylene and naphthylene groupsThis work was partially done in the Dept. of Chemistry at Rensselaer Polytechnic Institute. (1988)
    New York : Wiley-Blackwell
    Die Makromolekulare Chemie 189 (1988), S. 1579-1594 
    Details
    ISSN: 0025-116X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: High melting polymers of three different types of crystallization behavior were analyzed as to their thermal properties. The heat capacity at constant pressure of liquid poly(butylene terephthalate) (PBT) from 490 to 540 K was measured by scanning calorimetry. Combining with prior measured liquid heat capacity data of poly(oxy-1,4-phenylene) (PO) (358 - 620 K), poly-(thio-1,4-phenylene) (PPS) (540 - 600 K), poly(ethylene 2,6-naphthalenedicarboxylate) (PEN) (400 - 450 K, 530 - 600 K), an addition scheme for liquid heat capacities was constructed. In addition, the thermodynamic functions H and S have been calculated for those five polymers. The absolute, molar, residual entropy for the glassy state at zero kelvin is estimated to be 6,6,15,2, 7,48, 5,70, and 19,9 J/(K · mol) for PPS, PEN, PPO, PO, and PBT, respectively. Another two polymers with similar structure, poly(1,4-oxybenzoic acid) (POB) and poly(2,6-oxynaphthoic acid) (PON), were also studied in their high temperature mesophase states. A test of the addition scheme has been made to predict their heat capacities.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/macp.1988.021890713
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  • 6
    Electronic Resource
    Electronic Resource
    Phase transitions in mesophase macromolecules. V. Transitions in poly(oxy-1,4-phenylene carbonyl-co-oxy-2,6-naphthaloyl) (1985)
    New York : Wiley-Blackwell
    Journal of Polymer Science: Polymer Physics Edition 23 (1985), S. 521-535 
    Details
    ISSN: 0098-1273
    Keywords: Physics ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: The copolymer system HBA (4-hydroxybenzoic acid) and HNA (2,6-hydroxyhaphthoic acid) has been studied mainly by means of differential scanning calorimetry. Heat capacities for the two homopolymers and three copolymers are reported from 175 to 650 K. The heat capacities are additive with composition. The whole copolymer system represents an example of a mesophase intermediate between the liquid-crystalline and the condis-crystalline state with a small amount of crystallinity. The disordering transitions (520-620 K) have a eutecticlike phase diagram. The transitions to the isotropic states occur above the decomposition temperatures (600-700 K). The glass transitions (377-434 K) show normal changes in heat capacity (31-34 J/K mol), but are broadened to as much as 200 K.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1985.180230309
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  • 7
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    An Experimental Investigation on Dynamic Characteristics of Soft Soils Treated by Vibration-Drainage Method (2020)
    Hindawi
    Details
    Publication Date: 2020-08-29
    Description: This paper presents an experimental investigation on the dynamic characteristics of soft soils that are treated by vibration-drainage method (VDM). The representative dynamic axial strain at a given number of cycles was obtained. The VDM-treated soft soil exhibited different dynamic deformation characteristics that are not only affected by the cyclic frequency but also influenced by the vibration frequency during the treatment process. Soil specimens at different cyclic frequencies show a similar variation trend that the axial strain systematically grows with increasing number of cycles. The rate of axial strain for all specimens systematically linearly decreases with the increase of number of cycles in the log-log scale. Results showed that both axial strain and strain rate exhibit relatively lower values at a given number of cycles under the condition that the applied cyclic frequency is equal to vibration frequency. It is expected that the soil structure will be more stable if the applied cyclic frequency is close to the vibration frequency that is applied on VDM-treated soil. Therefore, the vibration frequency close to the possible dynamic loading frequency is recommended in the process of soft soil improvement via VDM in the related engineering applications.
    Print ISSN: 1687-8086
    Electronic ISSN: 1687-8094
    Topics: Architecture, Civil Engineering, Surveying
    Published by Hindawi
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  • 8
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    A level set based segmentation approach for point-sampled surfaces (2007)
    Springer
    Details
    Publication Date: 2007-04-01
    Print ISSN: 1673-565X
    Electronic ISSN: 1862-1775
    Topics: Natural Sciences in General
    Published by Springer
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  • 9
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    IJGI, Vol. 5, Pages 120: Integrating Spatial and Attribute Characteristics of Extended Voronoi Diagrams in Spatial Patterning Research: A Case Study of Wuhan City in China (2016)
    MDPI Publishing
    Details
    Publication Date: 2016-07-16
    Description: Rapid urbanization has caused numerous problems, and the urban spatial structure has been a hot topic in sustainable development management. Urban spatial structure is affected by a series of factors. Thus, the research model should synthetically consider the spatial and non-spatial relationship of every element. Here, we propose an extended Voronoi diagram for exploring the urban land spatial pattern. In essence, we first used a principal component analysis method to construct attribute evaluation indicators and obtained the attribute distance for each indicator. Second, we integrated spatial and attribute distances to extend the comparison distance for Voronoi diagrams, and then, we constructed the Voronoi aggregative homogeneous map of the study area. Finally, we make a spatial autocorrelation analysis by using GeoDA and SPSS software. Results show that: (1) the residential land cover aggregation is not significant, but spatial diffusion is obvious; (2) the commercial land cover aggregation is considerable; and (3) the spatial agglomeration degree of the industrial land cover is increased and mainly located in urban fringes. According to the neo-Marxist theory, we briefly analyzed the driving forces for shaping the urban spatial structure. To summarize, our approach yields important insights into the urban spatial structure characterized by attribute similarity with geospatial proximity, which contributes to a better understanding of the urban growth mechanism. In addition, it explicitly identifies ongoing urban transformations, potentially supporting the planning for sustainable urban land use and protection.
    Electronic ISSN: 2220-9964
    Topics: Architecture, Civil Engineering, Surveying , Geosciences
    Published by MDPI Publishing on behalf of International Society for Photogrammetry and Remote Sensing (ISPRS).
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  • 10
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    Low-energy Resistive Random Access Memory Devices with No Need for a Compliance Current (2015)
    Springer Nature
    Details
    Publication Date: 2015-05-19
    Description: A novel resistive random access memory device is designed with SrTiO3/ La2/3Sr1/3MnO3 (LSMO)/MgAl2O4 (MAO)/Cu structure, in which metallic epitaxial LSMO is employed as the bottom electrode rather than traditional metal materials. In this device, the critical external compliance current is no longer necessary due to the high self-resistance of LSMO. The LMSO bottom electrode can act as a series resistor to offer a compliance current during the set process. Besides, the device also has excellent switching features which are originated in the formation of Cu filaments under external voltage. Therefore it provides the possibility of reducing power consumption and accelerating the commercialization of resistive switching devices. Scientific Reports 5 doi: 10.1038/srep10409
    Electronic ISSN: 2045-2322
    Topics: Natural Sciences in General
    Published by Springer Nature
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