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  • 1
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    Diversity of circumsporozoite antigen genes from two strains of the malarial parasite Plasmodium knowlesi (1985)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1985-08-23
    Description: The complete nucleotide sequence of the coding region of the circumsporozoite antigen gene (CS gene) of the Nuri strain of the malarial parasite Plasmodium knowlesi is presented. The gene from the Nuri strain exhibits a novel form of sequence diversity when compared to the CS gene from the H strain. Instead of the 12 tandem repeating 36-base pair units of the H strain, the Nuri strain contains 16 tandem repeating 27-base pair units of a different nucleotide sequence that encodes a different repeating peptide. In contrast, the 5' and 3' coding and noncoding sequences flanking the repeats are 98 percent conserved in both strains.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sharma, S -- Svec, P -- Mitchell, G H -- Godson, G N -- 1 R01 AI21496-01/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 1985 Aug 23;229(4715):779-82.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/4023712" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Antigens, Protozoan/*genetics ; Antigens, Surface/genetics ; Base Sequence ; Genes ; Molecular Sequence Data ; Plasmodium/*genetics/immunology ; Protozoan Proteins/*genetics ; Repetitive Sequences, Nucleic Acid
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 2
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    Expression of the major surface antigen of Plasmodium knowlesi sporozoites in yeast (1985)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1985-05-17
    Description: The circumsporozite protein, a surface antigen of the sporozoite stage of the monkey malarial parasite Plasmodium knowlesi, was expressed in the yeast Saccharomyces cerevisiae by using an expression vector containing the 5' regulatory region of the yeast alcohol dehydrogenase I gene. It was necessary to eliminate the entire 5' upstream region of the parasite DNA to obtain the expression of this protein. Only the circumsporozoite precursor was produced by the yeast transformants, as detected by immunoblotting. About 55 and 20 percent of the circumsporozoite protein produced in yeast was associated wtih the 25,000 g and 150,000 g particulate fractions, respectively. The protein could be solubilized in Triton X-100 and was stable in solubilized extracts.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sharma, S -- Godson, G N -- 1 R01 AI21496-01/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 1985 May 17;228(4701):879-82.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3890178" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigens, Protozoan/*genetics ; Antigens, Surface/*genetics ; Cloning, Molecular ; DNA, Recombinant ; Genes ; Molecular Weight ; Plasmodium/genetics/*immunology ; Protein Precursors/biosynthesis/genetics ; Protozoan Proteins/*genetics ; Saccharomyces cerevisiae/*genetics ; Transformation, Genetic
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 3
    Electronic Resource
    Electronic Resource
    Effect of fillers on the rheological behavior of thermoplastic 1,2 polybutadiene rubber (1988)
    Stamford, Conn. [u.a.] : Wiley-Blackwell
    Polymer Engineering and Science 28 (1988), S. 648-654 
    Details
    ISSN: 0032-3888
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: The influence of fillers like clay, silica, and carbon black on the rheological properties of 1,2 polybutadiene has been studied using a capillary rheometer. Silica filled compound exhibited the highest viscosity and clay filled compound the lowest viscosity at all shear rates. The effect of filler loading and temperature on the Theological behavior has also been studied. Smooth extrudates were obtained in most of the cases and die swell was lower for silica and carbon black filled compounds than for clay filled compounds. Rheograms of different 1,2 polybutadiene systems have been found to merge into a master curve using modified viscosity and shear rate functions that contain melt flow index as a parameter.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pen.760281003
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  • 4
    Electronic Resource
    Electronic Resource
    Raman spectral study of solid and dissolved poly(vinyl alcohol) and ethylene-vinyl alcohol copolymer (1994)
    Bognor Regis [u.a.] : Wiley-Blackwell
    Journal of Polymer Science Part B: Polymer Physics 32 (1994), S. 1163-1174 
    Details
    ISSN: 0887-6266
    Keywords: poly(vinyl alcohol) ; raman spectroscopy ; polymer ; aqueous solution ; Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: We have measured the Raman spectra of ethylene-vinyl alcohol copolymer (EVOH) and poly(vinyl alcohol) (PVOH). Spectra of 88% hydrolyzed PVOH were examined from the partially crystalline solid, from PVOH dissolved in both H2O and D2O, and from films precipitated from these solutions. The spectrum in H2O differs from that of the starting material by disappearance of sharp bands having Raman shift values of 1146 and 1093 cm-1, strengthening of a band near 915 cm-1, decrease in frequency of bands at 480, 1356, and 1441 cm-1, and increase in frequency of bands at 369, 413, 1023, 1371, and 2910 cm-1. The spectrum of the film shows partial reversal of these trends. With D2O as the solvent, the band shifts are slightly different from those listed above and new bands appear. These changes are indicative of loss of crystallinity, change in stereochemistry, and partial deuteration of hydroxyl during dissolution of this PVOH sample at room temperature. © 1994 John Wiley & Sons, Inc.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/polb.1994.090320704
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  • 5
    Electronic Resource
    Electronic Resource
    The effect of stretching conditions on properties of amorphous polyethylene terephthalate film (1987)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 34 (1987), S. 2231-2247 
    Details
    ISSN: 0021-8995
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: The effect of stretching condition on stress-induced crystallization of amorphous polyethylene terephthalate (PET) film has been studied. Cast PET film was stretched at 85°C with stretching rates ranging from 100% per minute to 600% per minute for various stretching ratios. The stretched film samples were annealed at 140°C both under tension as well as under relaxed conditions. Tensile properties were determined using Instron Tensile Tester and results were compared. Tenacity, yield stress, and initial modulus were found to increase while elongation at break decreased with the increase in stretching rate. The degree of crystallinity was measured by x-ray diffraction as well as density methods. Birefringence and crystalline orientation factor values were determined experimentally and using these, amorphous orientation factor values were calculated. Birefringence, crystalline orientation and amorphous orientation values were found to increase with the increase in stretching rate. These studies showed that at low stretching rates a significant amount of relaxation takes place, resulting in lower orientation and strength. On the other hand, at higher stretching rates relaxation is minimized thus providing high orientation and strength. Upon annealing the crystallinity values increased as expected, however the trend of orientation and mechanical properties with respect to stretching rate was similar to those of unannealed films.
    Additional Material: 17 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1987.070340615
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  • 6
    Electronic Resource
    Electronic Resource
    Effect of thermal treatment on the electrothermographic and electrical properties of poly(acrylonitrile butadiene styrene) (1985)
    Weinheim : Wiley-Blackwell
    Angewandte Makromolekulare Chemie 130 (1985), S. 91-97 
    Details
    ISSN: 0003-3146
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Es wurden Untersuchungen zum elektrothermographischen und zum Leitfähigkeitsverhalten von Poly(Acrylnitril-Butadien-Styrol) (ABS) nach unterschiedlichen thermischen Vorbehandlungen durchgeführt. Die spezifischen Widerstände von bei 50°C gelagerten ABS-Platten erwiesen sich als klein (∼ 1015 Ω · cm). Auch die Ladungsaufnahme und die Ladungsspeicherung waren schlecht. Der Grund dafür ist die Adsorption von Wassermolekülen. Werden die Platten bei 100°C oder mehr für 5 h thermisch beansprucht, zeigen sie erhöhte spezifische Widerstände (∼ 1017 Ω· cm bei 50°C) und haben deshalb eine bessere Ladungsaufnahme und -speicherung. Sowohl Umwelt- und Lagerungsbedingungen als auch eine thermische Behandlung während der Herstellung der Platten haben unterhalb 110°C keinen Einfluß auf die Temperaturabhängigkeit der spezifische Widerstände.
    Notes: Studies on the electrothermographic and conductivity behaviour of poly(acrylonitrile butadiene styrene) (ABS) films of different thermal pretreatments were carried out. The resistivity in ABS layers stored at 50°C was found to be low (∼ 1015 Ω · cm). The charge acceptance and its retention also is poor. The reason for that is the adsorption of water molecules. The layers, when thermally treated at 100°C or more for 5 h, show an enhanced resistivity (∼ 1017 Ω · cm at 50°C) and hence an improvement in charge acceptance as well as in charge retention. Environmental and storage conditions as well as thermal treatment during layer preparations have no effect on the temperature dependence of the resistivity beyond 110°C.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/apmc.1985.051300107
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  • 7
    Electronic Resource
    Electronic Resource
    Effect of forming conditions and sensitization on temperature dependence of d. c. conductivity of cellulose acetate (1986)
    Weinheim : Wiley-Blackwell
    Acta Polymerica 37 (1986), S. 634-637 
    Details
    ISSN: 0323-7648
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Die Temperaturabhängigkeit der Gleichstromleitfähigkeit von unterschiedlich thermisch vorbehandelten Celluloseacetatfilmen wurde untersucht. Die Ergebnisse werden mit elektrothermographischen Parametern, wie der Ladungsaufnahme und dem Ladungsrückhaltevermögen, korreliert. Weiterhin wurde der Einfluß einer Sensibilisierung des Polymers mit Leucomalachitgrün auf die Leitfähigkeit ermittelt.
    Notes: Studies on the temperature dependence of d.c. conductivity of cellulose acetate films with different thermal treatment were carried out. The results were correlated with electrothermographic parameters like charge acceptance and retentivity. Further the effect of sensitization with leucomalachite green on the conductivity of the polymer was investigated.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/actp.1986.010371008
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  • 8
    Electronic Resource
    Electronic Resource
    Effect of sensitization on thermal depolarization current studies of poly(methyl methacrylate) (1985)
    Weinheim : Wiley-Blackwell
    Acta Polymerica 36 (1985), S. 393-394 
    Details
    ISSN: 0323-7648
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/actp.1985.010360713
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  • 9
    Electronic Resource
    Electronic Resource
    Temperature-dependent charging currents in poly(methyl methacrylate) and leucomalachite green mixed system (1987)
    Weinheim : Wiley-Blackwell
    Acta Polymerica 38 (1987), S. 199-200 
    Details
    ISSN: 0323-7648
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/actp.1987.010380310
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  • 10
    Electronic Resource
    Electronic Resource
    Studies on electrothermographic behaviour of poly(styrene-co-allyl alcohol) and leucomalachite green mixed system (1988)
    Weinheim : Wiley-Blackwell
    Acta Polymerica 39 (1988), S. 121-124 
    Details
    ISSN: 0323-7648
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Das elektrothermographische Verhalten von Poly(styren-co-allylalkohol) bei Sensibilisierung mit unterschiedlichen Mengen Leucomalachitgrün wurde untersucht. Die folgenden Parameter wurden ermittelt: Maximale Spannungsaufnahme, Abnahme des Oberflächenpotentials bei Raumtemperatur und bei Infrarotbestrahlung, Kontrastpotential, Restpotential und Thermoempfindlichkeit. Sowohl reine als auch sensibilisierte Filme zeigen eine beträchtliche Ladungsaufnahme bei einer Coronabehandlung. Die Zugabe des Thermosensibilisators führt zu einer Zunahme des Kontrastpotentials bei konstanter Infrarotbelichtung.
    Notes: The electrothermographic behaviour of poly(styrene-co-allyl alcohol) sensitized with different amounts of leucomalachite green has been studied. The following parameters were investigated: maximum acceptance potential, surface potential decay at room temperature and under infrared irradiation, contrast potential, residual potential, and thermosensitivity. Pure as well as sensitized layers show quite high charge acceptance on corona charging. Addition of the thermosensitizer causes an enhanced contrast potential at constant IR exposure.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/actp.1988.010390306
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