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  • 1
    Electronic Resource
    Electronic Resource
    A comment on dielectric hole burning (1999)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 111 (1999), S. 1043-1048 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: The method of dielectric hole burning is used to distinguish a homogeneous broadened spectrum from a distribution of relaxation times in a dielectric material. After stimulation with a sinusoidal high electric field a time-dependent shift of the response function Φ(t) is observed. This shift is considered to be induced by a frequency selective absorption of energy and an increase of a local fictive temperature. A computer simulation, which is based upon the model of asymmetric double-well potentials for dipole orientations, also shows a time-dependent shift of the response function after applying and removing a sinusoidal high electric field. This behavior is explained considering the time-dependent polarization only. It is shown in this article that it is not necessary to assume an increase of a local fictive temperature caused by a frequency selective absorption of energy. © 1999 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.479295
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  • 2
    Electronic Resource
    Electronic Resource
    Firmness and Cell Wall Characteristics of Pasteurized Jalapeño Pepper Rings as Affected by Calcium Chloride and Rotary Processing (1999)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 64 (1999), S. 0 
    Details
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Rotary processing resulted in more uniform heat penetration and texture retention throughout the container than resulted after nonagitated processing. Localized softening in nonagitated peppers was due to prolonged heating at the top of the container, which hydrolyzed large molecular weight pectic substances (chelator and nonextractable) to more soluble forms. Calcium improved the texture by maintaining greater levels of insoluble pectic substances (chelator, dilute alkali and nonextractable) and reducing pectin solubilization. The combination of rotary processing and calcium chloride treatment resulted in a product with fresh-like, uniform texture throughout the container.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2621.1999.tb15069.x
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  • 3
    Electronic Resource
    Electronic Resource
    Small-cell carcinoma of the ovary of the hypercalcemic type in an 8-year-old girl (1999)
    Springer
    Pediatric surgery international 15 (1999), S. 431-434 
    Details
    ISSN: 1437-9813
    Keywords: Key words Ovarian tumor ; Children ; Hypercalcemia ; Small-Cell carcinoma
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Tumors of the ovary in girls represent about 80% of pediatric genital tumors; approximately 30% of these tumors are malignant. The risk of malignancy increases with decreasing age. The most frequent finding is a teratoma; other tumors are rare. Small-cell carcinoma (SCCO) of the ovary is extremely rare, occurring mostly in young women. We present an 8-year-old girl with a SCCO of the hypercalcemic type. The findings and treatment are discussed with emphasis on the poor prognosis in these patients, even in stage 1 disease. The current literature is reviewed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003830050625
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  • 4
    Electronic Resource
    Electronic Resource
    Structure and mechanism of the glycyl radical enzyme pyruvate formate-lyase (1999)
    [s.l.] : Nature America Inc.
    Nature structural biology 6 (1999), S. 969-975 
    Details
    ISSN: 1072-8368
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Medicine
    Notes: [Auszug] Pyruvate formate-lyase (PFL) from Escherichia coli uses a radical mechanism to reversibly cleave the C1-C2 bond of pyruvate using the Gly 734 radical and two cysteine residues (Cys 418, Cys 419). We have determined by X-ray crystallography the structures of PFL (non-radical form), its complex ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/13341
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  • 5
    Electronic Resource
    Electronic Resource
    Validation of the Kiswahili version of the SF-36 Health Survey in a representative sample of an urban population in Tanzania (1999)
    Springer
    Quality of life research 8 (1999), S. 111-120 
    Details
    ISSN: 1573-2649
    Keywords: Tanzania ; health status assessment ; health-related quality of life ; SF-36 Health Survey ; known-groups validity ; cross-cultural studies.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The objective of this study was to assess the validity of a Kiswahili translation of the SF-36 Health Survey (SF-36) among an urban population in Tanzania, using the method of known-groups validation. People were randomly selected from a demographic surveillance system in Dar es Salaam. The representative sample consisted of 3,802 adults (15 years and older). Health status differences were hypothesized among groups, who differed in sex, age, socio-economic status and self-reported morbidity. Mean SF-36 scale scores were calculated and compared using t-test and ANOVA. Women had significantly lower mean SF-36 scale scores (indicating worse health status) than men on all scales and scores were lower for older people than younger on all domains, as hypothesized. On five of the eight SF-36 scales, means were higher for people of higher socio-economic status compared to those of lower socio-economic status. People who reported an illness within the previous 2 weeks scored significantly lower on all scales compared to those who were healthy, as did people who said they had a disability or a chronic condition.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1026431727374
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  • 6
    Electronic Resource
    Electronic Resource
    A Kiswahili version of the SF-36 Health Survey for use in Tanzania: translation and tests of scaling assumptions (1999)
    Springer
    Quality of life research 8 (1999), S. 101-110 
    Details
    ISSN: 1573-2649
    Keywords: SF-36 Health Survey ; Tanzania ; questionnaire translation ; IQOLA ; psychometric properties ; health status ; international ; cross-cultural research ; Kiswahili.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The objective of the study was to translate and adapt the SF-36 Health Survey for use in Tanzania and to test the psychometric properties of the Kiswahili SF-36. A cross-sectional study was conducted as part of a household survey of a representative sample of the adult population of Dar es Salaam, Tanzania. The IQOLA method of forward and backward translation was used to translate the SF-36 into Kiswahili. The translated questionnaire was administered by trained interviewers to 3,802 adults (50% women, mean (SD) age 31 (13) years, 50% married and 60% with primary education). Data quality and psychometric assumptions underlying the scoring of the eight SF-36 scales were evaluated for the entire sample and separately for the least educated subgroup (n=402), using multitrait scaling analysis. Forward and backward translation procedures resulted in a Kiswahili SF-36 that was considered conceptually equivalent to the US English SF-36. Data quality was excellent: only 1.2% of respondents were excluded because they answered less than half of the items for one or more scales; ninety percent of respondents answered mutually exclusive items consistently. Median item–scale correlations across the eight scales ranged from 0.47 to 0.81 for the entire sample. Median scaling success rates were 100% (range 87.5–100.0). The median internal consistency reliability of the eight scales for the entire sample was 0.81 (range 0.70–0.92). Floor effects were low and ceiling effects were high on five of the eight scales. Results for n=402 people without formal education did not differ substantially from those of the entire sample. The results of data quality and psychometric tests support the scoring of the eight scales using standard scoring algorithms. The Kiswahili translation of the SF-36 may be useful in estimating the health of people in Dar es Salaam. Evidence for the validity of the SF-36 for use in Tanzania needs to be accumulated.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1026441415079
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  • 7
    Electronic Resource
    Electronic Resource
    Tödlicher Verlauf einer Ethylene-Dichloridevergiftung trotz des Einsatz der perkutan implantierbaren Herz-Lungen-Maschine (1999)
    Springer
    Intensivmedizin und Notfallmedizin 36 (1999), S. 541-544 
    Details
    ISSN: 1435-1420
    Keywords: Key words Ethylene dichloride (EDC) ; intoxication ; cardiogenic shock ; percutaneous cardiopulmonary bypass ; Schlüsselwörter Ethylene-Dichloride (EDC) ; Vergiftung ; kardiogener Schock ; Herzlungenmaschine ; perkutan implantierbare
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Ethylen-Dichlorid (EDC) ist ein technisches Lösemittel, zusätzlich wird es bei der Herstellung von Kunststoffen und Insektiziden industriell verwendet. Vergiftungen entstehen durch Inhalation, Ingestion und Resorption über intakte Haut. 20 ml gelten als tödliche Dosis. EDC greift in den Stoffwechsel aller Zellen ein, von klinischer Seite stehen die Funktionsstörungen des zentralen Nervensystems, der Leber, der Nieren und des Herzens im Vordergrund. Der Tod tritt meistens durch ein Versagen der Leber oder des zentralen Nervensystems ein. Wir berichten über den tödlichen Verlauf einer suizidalen EDC-Vergiftung bei einem jungen Mann. Er war 30 Minuten nach der Einnahme von 125 ml EDC auf der Notfallaufnahme eingetroffen. Er wurde sofort intubiert, eine Darmlavage unter Applikation von Aktivkohle begonnen. Es kam in kurzer Folge zu einem fulminanten Kreislaufversagen mit einer schweren metabolischen Acidose, schließlich zum Herzkreislaufstillstand. Mit dem Einsatz der perkutan implantierbaren Herzlungenmaschine (pHLM) konnte eine kurzfristige Besserung der Metabolik erreicht werden. Trotz des extrakorporalen Kreislaufs traten Muskelkontrakturen wie bei der Totenstarre auf. Bei persistierender Asystolie wurde der extrakorporale Kreislauf beendet.
    Notes: Summary Ethylene dichloride (EDC) is used as a solvent and in the rubber, plastic, and insecticide industry. The fatal adult dose is below 20 ml. Poisoning can occur from inhalation, ingestion or skin absorption. EDC depresses almost all cells, but essentially those of the central nervous system, liver, kidneys, and heart. Death is usually due to liver or central nervous failure. We report the lethal suicidal EDC poisoning in a young patient. The patient arrived in hospital 30 minutes after ingestion of 125 ml of EDC. He was intubated immediately; intestinal lavage with charcoal was installed. Fulminant cardiac failure and severe acidosis lead to cardiac arrest; treatment with the percutaneous cardiopulmonary bypass was started. A short period of metabolic improvement was followed by muscle contractures mimicking cadaverick rigidity, asystoly persisted, and the extracorporeal therapy was terminated.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003900050274
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