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  • Polymer and Materials Science  (4)
  • surface tension  (3)
  • [abr] CCU; color changing units  (2)
  • refrigerants  (2)
  • 1
    ISSN: 0165-2427
    Keywords: [abr] ATCC; American Type Culture Collection ; [abr] BALF; bronchoalveolar lavage fluids ; [abr] CCU; color changing units ; [abr] Con A; concanavalin A ; [abr] HPCD; hysterectomy-produced colostrum-deprived ; [abr] IL-1; interleukin 1 ; [abr] MPS; mycoplasmal pneumonia of swine ; [abr] PBS; phosphate-buffered saline ; [abr] PID; postinoculation day ; [abr] TNF; tumor necrosis factor
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 0165-2427
    Keywords: [abr] ATCC; American type culture collection ; [abr] BALF; bronchoalveolar lavage fluids ; [abr] CCU; color changing units ; [abr] FBS; fetal bovine serum ; [abr] GL; gross lung lesions ; [abr] HLT; hyperplasia of lymphoid tissues ; [abr] IL; interleukin ; [abr] MPS; mycoplasmal pneumonia of swine ; [abr] PGE2; prostaglandin E"2 ; [abr] PI; post-inoculation ; [abr] SPF; specific pathogen-free ; [abr] TNF-α; tumor necrosis factor-α
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    International journal of thermophysics 16 (1995), S. 791-800 
    ISSN: 1572-9567
    Keywords: differential capillary-rise method ; HFC-32 ; HCFC-124 ; HFC-125 ; HCFC-141b ; HCFC-1426 ; HFC-152a ; refrigerants ; surface tension
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The surface tension of six alternative refrigerants, i.e., HFC-32 (CH, F, ). HCFC-124 (CHClFCF,), HFC-125 (CHF2CF3). HCFC-14lb ICH,CCI,F). HCFC-142b (CH3CCIF2), and HFC-152a (CH3CHF2), has been measured in the present study. The measurements were conducted under equilibrium conditions between the liquid and its saturated vapor. The differential capillary-rise method (DORM) used two glass capillaries, with inner radii of 0.3034 ± 0.0002 and 0.5717 ±0.0002 mm, respectively. Temperatures in the range from 270 to 340 K were considered. The accuracy of surface tension measurements is estimated to be within ±0.2 mN · m−1. The temperatures are accurate to within ±20 mK. The temperature dependence of the resultant data were successfully represented by van der Waals' correlations to within ±(1.1 mN m−1 for each substance. Available surface tension data are compared with the present data.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    International journal of thermophysics 2 (1981), S. 163-176 
    ISSN: 1572-9567
    Keywords: Capillary constant ; capillary rise method ; halogenated hydrocarbons ; surface tension
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract By means of the capillary rise method, we have measured the surface tension of four different kinds of halogenated hydrocarbons, namely, trichlorofluoromethane (CCl3F; R 11), dichlorodifluoromethane (CCl2F2; R 12), trichlorotrifluoroethane (C2Cl3F3; R 113), and dichlorotetrafluorethane (C2Cl2F4; R 114). Under the coexistence of the sample liquid with its saturated vapor in equilibrium, the measurements have been performed within the maximum uncertainty of 0.12 mN · m−1 at temperatures from 273 K up to near the critical point of the respective substances. Under the same experimental conditions, two sets of surface tension data have been obtained with two different Pyrex glass capillaries whose inner radii were 0.1536±0.0004 and 0.1724±0.0005 mm, respectively. The two sets of data were in agreement within 0.1 mN · m−1. The data were represented by van der Waals-type correlations with a standard deviation of 0.10 mN · m−1 for CCl3F, 0.04 mN · m−1 for CCl2F2, 0.08 mN · m−1 for C2Cl3F3, and 0.07 mN · m−1 for C2Cl2F4, respectively.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    International journal of thermophysics 20 (1999), S. 119-127 
    ISSN: 1572-9567
    Keywords: differential capillary-rise method ; mixtures ; R-410A ; R-410B ; R-407C ; R-404A ; R-507 ; refrigerants ; surface tension
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The surface tension of refrigerant mixtures, i.e., R-410A (50 mass% R-32/50 mass% R-125), R-410B (45 mass% R-32/55 mass% R-125), R-407C (23 mass% R-32/25 mass% R-125/52 mass% R-134a), R-404A (44 mass% R-125/52 mass% R-143a/4 mass% R-134a), and R-507 (50 mass% R-125/50 mass% R-143a), has been measured and correlated in the present study. Although the first three mixtures are very important as promising replacements for R-22 in air-conditioners and heat-pumps and the last two are promising replacements for R-502, surface tension data for these mixtures were not previously available. The measurements were conducted under conditions of coexistence of the sample liquid and its saturated vapor in equilibrium. The differential capillary rise method (DCRM) was used, with two glass capillaries with inner radii of 0.3034±0.0002 and 0.5717±0.0002 mm. The temperature range covered was from 273 to 323 K, and the uncertainty of measurements for surface tensions and temperatures is estimated to be at most ±0.2 mN·m−1 and ±20 mK, respectively. A mixing rule was selected for representing the temperature dependence of the resultant data. These data were successfully represented by a mixing rule using mass fraction based on the van der Waals correlation.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    New York : Wiley-Blackwell
    Die Makromolekulare Chemie 122 (1969), S. 284-286 
    ISSN: 0025-116X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    New York : Wiley-Blackwell
    Die Makromolekulare Chemie 82 (1965), S. 16-24 
    ISSN: 0025-116X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Die Copolymerisationen von 1,3-Dioxolan mit Tetrahydrofuran, 3,3-Bischlormethyloxetan und 4-Chlormethyl-1,3-Dioxolan wurden mit Borfluoridätherat als Katalysator durchgeführt. Die Copolymerisationsparameter bei 0°C wurden bestimmt. Die Auftragung 1/r1 gegen pKb eines jeden Monomeren ergab eine Gerade, was darauf schließen läßt, daß die Basizität bei der Bestimmung der Copolymerisationsparameter der kationischen Polymerisation wichtig ist.
    Notes: Copolymerization of 1,3-dioxolane with tetrahydrofuran, 3,3-bis(chloromethyl)oxacyclobutane, and 4-chloromethyl-1,3-dioxolane were performed using boron fluoride etherate as catalyst. The monomer reactivity ratios at 0°C. were determined. The plot of log 1/r1 vs. pKb of each monomer gave a straight line, which suggests that basicity of cyclic ethers may be important in determining monomer reactivity ratios in their cationic copolymerization.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    New York : Wiley-Blackwell
    Journal of Polymer Science Part A-1: Polymer Chemistry 7 (1969), S. 2467-2467 
    ISSN: 0449-296X
    Keywords: Physics ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Acta Polymerica 46 (1995), S. 453-457 
    ISSN: 0323-7648
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: Poly(oxytrimethylene) (POT) has been found to form inclusion complexes with cyclodextrins to give crystalline compounds in high yields. The yields of the complexes of POT with α-cyclodextrin increased with increase in the molecular weight of POT, reached a maximum at a molecular weight of about 1000, and then decreased with the molecular weight. The stoichiometries are 1:1.5-2 (CD:monomer unit) when the molecular weight of POT is less than 2000. β-Cyclodextrin gave complexes with POT in a 1:2-2.5 ratio when the average molecular weights were less than 2000. When the molecular weight of the polymer was higher than 3000, the ratio of the monomer unit to cyclodextrin increased with increase in the molecular weight. The binding modes are discussed.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
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