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  • 2000-2004  (3)
  • 1985-1989  (5)
  • 1965-1969  (1)
  • 1960-1964
  • Polymer and Materials Science  (6)
  • AMS Classification. Primary 57R56; Secondary 68Q05, 81Q70, 82B10, 94B99, 20F36.
  • HIV
  • Maligner intraokulare Tumor
Material
Years
Year
Keywords
  • 1
    ISSN: 1433-0423
    Keywords: Schlüsselwörter Mammakarzinommetastase ; Maligner intraokulare Tumor ; Inzidenz ; Risikofaktoren ; Frühzeitige Therapie ; Key words Breast Cancer Metastasis ; Intraocular Tumor ; Incidence ; Risk Factors ; Early Treatment
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary Background: The breast cancer metastasis is the most common intraocular tumor in females. Aim of this study was to determine incidence and risk factors for intraocular metastasis and to evaluate the benefit of an early treatment. Patients and Methods: 151 patients suffering from metastastic breast cancer were screened for the presence of intraocular metastasis. The medical history and the tumor status at the time of screening were evaluated and risk factors for intraocular metastasis were determined. In case of choroidal metastasis external beam radiotherapy was performed. Results: Intraocular metastasis was found in 7 out of 151 patients screened (4.6%). In one patient metastasis was located in the iris, in 6 patients in the choroid. Intraocular metastasis was only found in patients with more than one other organ system involved into disease (p=0.002). In this subgroup of patients (n=65) prevalence of intraocular metastasis was 10,8%. Other risk factors for intraocular metastasis were presence of lung metastasis or brain metastasis. In 5 out 6 patients with choroidal metastasis external beam radiotherapy was performed, resulting in durable regression of metastasis and stabilization or improvement of visual acuity. Conclusion: The prevalence of intraocular metastasis in metastatic breast cancer was determined to be 4.6%. It is most commonly located in the choroid and develops in the course of advanced metastastic disease. Since early external beam radiotherapy of choroidal metastasis prevents functional loss, patients at risk should be given an ophthalmological screening for intraocular metastasis.
    Notes: Zusammenfassung Hintergrund: Die Mammakarzinommetastase ist der häufigste maligne intraokulare Tumor der Frau. Ziel der Untersuchung war die Bestimmung der Inzidenz, die Identifizierung von Risikofaktoren bezüglich des Auftretens sowie die Bewertung des Nutzens einer frühzeitigen Therapie dieser zunächst überwiegend asymptomatischen Tumormanifestation. Patienten und Methode: 151 Patientinnen mit metastasiertem Mammakarzinom wurden auf das Vorliegen intraokularer Metastasen untersucht. Die Tumoranamnese sowie der Tumorstatus zum Untersuchungszeitpunkt wurden erfasst um Risikofaktoren für eine intraokulare Metastasierung zu bestimmen sowie die Inzidenz derselben zu berechnen. Im Falle einer Aderhautmetastasierung wurde eine perkutane Strahlentherapie durchgeführt. Ergebnisse: Bei 7 von 151 untersuchten Patientinnen (4,6%) wurde eine intraokulare Metastasierung gefunden. In einem Fall bestand eine Irismetastase, bei 6 Patientinnen bestanden Aderhautmetastasen. Nur bei Patientinnen, bei denen mehr als ein Organsystem von einer Metastasierung betroffen war, fanden sich intraokulare Metastasen (p=0,002). In dieser Untergruppe der Patientinnen mit mehr als einem betroffenen Organsystem (n=65) betrug die Prävalenz der intraokularen Metastasierung 10,8%. Als weitere Risikofaktoren für das Auftreten intraokularer Metastasen konnten das Vorhandensein von Lungen- sowie von Hirnmetastasen identifiziert werden. Die bei 5 der 6 Patientinnen mit Aderhautmetastasierung durchgeführte perkutane Strahlentherapie führte zu einer Regression der Metastasen und zu einer dauerhaften Stabilisierung oder Besserung des Visus. Schlussfolgerung: Die Prävalenz der intraokularen Metastasierung beim metastasierten Mammakarzinom konnte mit 4,6% bestimmt werden. Sie betrifft meistens die Aderhaut und tritt im Rahmen einer Metastasierung in multiple Organsysteme auf. Da eine frühzeitige perkutane Strahlentherapie einen Funktionsverlust verhindert, sollten bei Risikopatienten gezielte ophthalmologische Untersuchungen erfolgen.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Foundations of computational mathematics 1 (2001), S. 183-204 
    ISSN: 1615-3383
    Keywords: AMS Classification. Primary 57R56; Secondary 68Q05, 81Q70, 82B10, 94B99, 20F36.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Abstract. The mathematical problem of localizing modular functors to neighborhoods of points is shown to be closely related to the physical problem of engineering a local Hamiltonian for a computationally universal quantum medium. For genus =0 surfaces, such a local Hamiltonian is mathematically defined. Braiding defects of this medium implements a representation associated to the Jones polynomial and this representation is known to be universal for quantum computation.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 35 (1988), S. 75-83 
    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: Polyester resins were prepared by the reaction of p-carboxysuccinanilic acid ethyl ester with ethylene glycol and 1,4-butenediol. Also, unsaturated polyester resins were prepared by the copolymerization of p-carboxysuccinanilic acid ethyl ester and maleic anhydride with ethylene glycol, 1,6-hexanediol, 1,4-butenediol, and 2-butyne-1,4-diol. All the polyester resins and the copolyesters have been characterized and were found to cure with styrene, except those prepared in the absence of maleic anhydride. The properties of the cured products in the form of films were determined. Infrared and nuclear magnetic resonance (NMR) spectroscopy were used for both qualitative and quantitative analyses of the polyester resins and their hydrolyzate products after curing with styrene.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Bognor Regis [u.a.] : Wiley-Blackwell
    Journal of Polymer Science Part A: Polymer Chemistry 26 (1988), S. 201-206 
    ISSN: 0887-624X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The surface compositions of various polymeric films, grown electrochemically on platinum foils, have been investigated by energy-dispersive x-ray analysis in conjunction with scanning electron microscopy (SEM/EDS). Comparison of the relative area ratios of peaks for the C and N Kemission lines show that the EDS may be used to study the surface composition of polymers. The evidence presented strongly suggests that there is limited structural degradation and the elemental composition is not changed under the electron beam at relatively low accelerating voltages. This technique statistically samples the repeat units of the polymer. For samples grown in both aqueous and nonaqueous solutions. SEM/EDS provides evidence for extensive contamination with oxygen.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
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  • 5
    ISSN: 1573-3521
    Keywords: salivary cortisol ; relaxation ; HIV ; mood
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine , Psychology
    Notes: Abstract This study examined salivary cortisol and mood during relaxation training in 30 symptomatic, HIV+ gay men participating in a 10-week, group-based cognitive-behavioral stress management intervention. Cortisol levels and mood were assessed within these sessions just before and after 45-min relaxation exercises given as part of each session. Participants also recorded their stress level and compliance with daily home relaxation practice. Presession cortisol levels decreased across the 10-week period and were related to decreases in global measures of total mood disturbance and anxious mood. Reductions in presession cortisol levels were also associated with decreases in self-reported stress level during home practice. Greater reductions in cortisol during the first three sessions were associated with more frequent relaxation practice at home. These findings suggest that salivary cortisol represents an objective neuroendocrine marker for changes in anxiety and distress observed during relaxation training in symptomatic, HIV-seropositive men.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 34 (1987), S. 1117-1124 
    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: Some unsaturated polyester resins were prepared by the ester interchange between p-carbethoxymaleananilic acid and p-carbethoxysuccinanilic acid with saturated and unsaturated diols. Moreover, copolymers were also synthesized by the polyesterification of the aforementioned acids and maleic anhydride with the above-mentioned glycols. The structure of both the unsaturated polyester resins and copolymer resins was established by IR, UV, and NMR spectroscopy. Also, viscosity measurements and molecular weight determinations were further tools for their structural elucidation. All the products were attempted to cure with styrene in the presence of benzoyl peroxide as initiator, and the produced network structures, in the form of films, were tested as surface coating materials for glass and metals. The structure of the cured products was established after their degradation, by physical and spectroscopical means.
    Additional Material: 5 Tab.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 31 (1986), S. 2705-2710 
    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: A series of polymeric composites were prepared with sand/polyester ratio 92:8%. The sand used was local one. The polymeric composites were tested for their compressive strength, exterior volume, porosity, water uptake, specific gravity, volume of open pores and bulk density. The mechanical properties of these polymeric composites were within the range required for building bricks. No significant differences were observed between the polymeric composites made of glass sand and those from untreated sand except in exterior volume and compressive strength. Medium untreated sand was found to give better results in the mechanical properties.
    Additional Material: 5 Tab.
    Type of Medium: Electronic Resource
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  • 8
    ISSN: 0009-286X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Use of cross-flow techniques in biotechnology. This progress report summarises experience and results gained during the development and optimisation of various micro- and ultrafiltration process. The major emphasis lies on the calculation of data which precede actual separation experiments and which define the separation or work-up problem and the product system involved. To this end the author presents a checklist covering the following areas: definition of the problem at hand, characterisation of the product system and demands placed on membrane plant and membranes. The second area of emphasis is the concept of a flexible membrane test plant. With the aid of this plant, all the data necessary for design and optimisation of a membrane process can be worked out during the laboratory experimentation phase. The principal process engineering tools available for optimisation of the specific filtration performance and maximisation of the product yield are considered. The report considers both the effects and the theoretical fundamentals of techniques for maintaining steady flow of filtrate and for avoiding nonspecific adsorption.
    Additional Material: 15 Ill.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    New York : Wiley-Blackwell
    Journal of Polymer Science Part B: Polymer Letters 6 (1968), S. 233-240 
    ISSN: 0449-2986
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
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