Library

feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Mineralogy and petrology 5 (1955), S. 260-272 
    ISSN: 1438-1168
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 2
    Electronic Resource
    Electronic Resource
    Springer
    International journal of earth sciences 43 (1955), S. 176-178 
    ISSN: 1437-3262
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Notes: Zusammenfassung Die in das Pleistozän fallenden tektonischen Ereignisse im inneralpinen Wiener Becken werden skizziert. Auf den Unterschied ihres Anlageplanes zu dem der miozän-pliozänen tektonischen Entwicklung wird hingewiesen.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 3
    Electronic Resource
    Electronic Resource
    Springer
    International journal of earth sciences 40 (1952), S. 253-257 
    ISSN: 1437-3262
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 4
    Electronic Resource
    Electronic Resource
    Springer
    International archives of occupational and environmental health 68 (1996), S. 478-483 
    ISSN: 1432-1246
    Keywords: Carbon black dust exposure ; Lung function testing ; Obstructive airway diseases ; Confounding variables ; Bronchial hyperresponsiveness
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Spirometry, full-bodyplethysmography, and inhalation challenge tests are the most frequently used methods for lung function testing. In all, 677 examinations were performed among exposed employees at the Degussa carbon black plant in Kalscheuren/Germany using the above mentioned methods, in order to detect whether there is a measurable impact of carbon black fine dust on pulmonary function, or a higher prevalence of obstructive air-way diseases among the study candidates, and whether fine dust exposure is related to the prevalence of bronchial hyperresposiveness. Within the smokers' group carbon black dust exposure reveals a (minimal) impact upon the lung function of the study subjects. However, the impact of fine dust exposure within that group is less significant than the influence of smoking on pulmonary function. Nevertheless, smokers are displaying significant more frequently signs of obstructive airway diseases compared with nonsmokers. In the smokers' group we found 7.3% of study subjects with signs of obstructive airway diseases compared with 3.9% in the group of nonsmokers. No significant impact of fine dust exposure on lung function could be detected within former-and nonsmokers. The overall percentage of 5.1 % is not higher than that of subjects with bronchial hyperresponsiveness in other comparable studies.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 5
    Electronic Resource
    Electronic Resource
    Springer
    International archives of occupational and environmental health 68 (1996), S. 478-483 
    ISSN: 1432-1246
    Keywords: Key words Carbon black dust exposure ; Lung function ; testing ; Obstructive airway diseases ; Confounding ; variables ; Bronchial hyperresponsiveness
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Spirometry, full-bodyplethysmography, and inhalation challenge tests are the most frequently used methods for lung function testing. In all, 677 examinations were performed among exposed employees at the Degussa carbon black plant in Kalscheuren/Germany using the above mentioned methods, in order to detect whether there is a measurable impact of carbon black fine dust on pulmonary function, or a higher prevalence of obstructive air-way diseases among the study candidates, and whether fine dust exposure is related to the prevalence of bronchial hyperresposiveness. Within the smokers’ group carbon black dust exposure reveals a (minimal) impact upon the lung function of the study subjects. However, the impact of fine dust exposure within that group is less significant than the influence of smoking on pulmonary function. Nevertheless, smokers are displaying significant more frequently signs of obstructive airway diseases compared with nonsmokers. In the smokers’ group we found 7.3% of study subjects with signs of obstructive airway diseases compared with 3.9% in the group of nonsmokers. No significant impact of fine dust exposure on lung function could be detected within former- and nonsmokers. The overall percentage of 5.1% is not higher than that of subjects with bronchial hyperresponsiveness in other comparable studies.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 6
    ISSN: 1433-0385
    Keywords: Key words: Stapled anastomoses ; Hand-Sewn anastomoses ; Cost-effectiveness. ; Schlüsselwörter: Klammernaht ; Handnaht ; Kosteneffektivität.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung. Zunehmender ökonomischer Druck macht auch vor den Krankenhäusern nicht halt. Es erscheint daher zwingend erforderlich, medizinische bzw. chirurgische Maßnahmen nicht nur auf ihr Effektivität, sondern auch auf ihre Effizienz zu untersuchen. In der vorliegenden Studie wurden 324 Anastomosen (167 Klammernähte vs. 157 Handnähte) nach entsprechender Randomisierung bei 200 elektiven Operationen [20,5 % Gastrektomien, 14 % Magenresektionen (Typ BII), 15 % Whipple-Operationen, 4 % Colonsegmentresektionen, 18 % rechtsseitige Hemicolektomien, 4 % linksseitige Hemicolektomien, 22 % Sigma- bzw. Rectumresektionen, 2,5 % totale Colektomien mit Pouchanlage] am Gastrointestinaltrakt bei 200 Patienten angelegt. Die postoperative Motilität (Zeit bis zur vollen Oralisierung, Zeit mit Magensonde) sowie die postoperative Hospitalisierung waren in beiden Gruppen vergleichbar. Eine Anastomoseninsuffizienz trat bei 2,1 % aller Patienten auf, 5 mal nach Klammer- und 2 mal nach Handnaht. Die Hospitalletalität lag bei 1,5 %. Alle geklammerten Rekonstruktionen konnten signifikant (p 〈 0,001) schneller angelegt werden. Die Materialkosten für diese Anastomosen waren jedoch signifikant (p 〈 0,001) höher, was zu signifikant höheren Rekonstruktionskosten (p 〈 0,001) für diese Anastomosen führte. Der Zeitgewinn bei der Rekonstruktion hatte keinen signifikanten Einfluß auf die Gesamtoperationszeit (außer bei der Gastrektomie mit Klammernaht), so daß aufgrund der hohen Materialkosten alle Operationen mit Klammernahtrekonstruktion kostenintensiver als solche mit Handnahtrekonstruktion waren. Dieser Unterschied war bei der Gastrektomie (p 〈 0,01), den Colonresektionen (p 〈 0,01) und den Sigma- bzw. Rectumresektionen (p 〈 0,001) statistisch signifikant. Klammer- und Handnahtanastomosen sind gleich effektiv. Klammernähte sind allerdings nicht effizient und sollten daher individuellen Indikationen vorbehalten bleiben.
    Notes: Summary. Hospitals are facing increasing economic pressure. It therefore seems necessary to evaluate the efficiency and effectiveness of medical or surgical interventions. In this study 324 anastomoses (167 stapled and 157 hand-sewn) were performed after randomization during 200 elective operations [20.5 % gastrectomies, 14 % gastric resections (Billroth II), 15 % Whipple's procedures, 4 % segmental colonic resections, 18 % right-sided hemicolectomies, 4 % left-sided hemicolectomies, 22 % sigmoid- or anterior rectal resections, 2.5 % total colectomies with pouch-anal anastomoses] in 200 patients. Postoperative motility (time to full oral diet, time with naso-gastric tube) and hospitalization were comparable in both groups. Anastomotic insufficiency was observed in 2.1 % of all patients, five after stapled and two after hand-sewn anastomoses. Hospital mortality was 1.5 %. All stapled anastomoses were performed significantly (P 〈 0.001) faster. However, the cost of material for these anastomoses was significantly (P 〈 0.001) higher, resulting in significantly higher total costs for reconstruction. The time saving for the reconstruction did not influence the total operative time (except for stapled gastrectomy). Therefore, all operations with stapled reconstruction were more expensive than those with sutured reconstruction. The difference was significant for the gastrectomy (P 〈 0.01), colonic resection (P 〈 0.01) and sigmoid and rectal resection (P 〈 0.001) groups. Stapled and sutured anastomoses are equally effective. Stapled anastomoses are not efficient, however, and should be reserved for individual indications.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 7
    ISSN: 1436-6304
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics , Economics
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 8
    Electronic Resource
    Electronic Resource
    Springer
    OR spectrum 3 (1981), S. 61-64 
    ISSN: 1436-6304
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics , Economics
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 9
    ISSN: 1573-9058
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Transients of chlorophyll fluorescence in photosynthetic objects are often measured using short pulses of exciting radiation, which has recently been employed to capture kinetic images of fluorescence at the macroscopic level. Here we describe an instrument introducing this principle to recording of two dimensional fluorescence transients in microscopic objects. A modified fluorescence microscope is equipped with a CCD camera intensified by a micro-channel plate image amplifier. The microscopic field is irradiated simultaneously by three types of radiation: actinic radiation, saturating flashes, and pulsed measuring radiation. The measuring pulses are generated by a light-emitting diode and their duration is between 10 to 250 µs. The detection of fluorescence images (300×400 pixels, 8 bit) has a maximum time resolution of 40 ms and is gated in synchrony with the exciting pulses. This allows measuring on a background of a continuous actinic radiation up to irradiance that can elicit the maximal fluorescence yield (FM). On the other hand, the integral irradiance of the objects by the measuring radiation is very low, e.g., 0.08 µmol m−2 s−1 at 0.05 µm spatial resolution and 0.006 µmol m−2 s−1 at 4 µm spatial resolution. This allows a reliable recording of F0 even in very short time intervals (e.g., 5×80 ms). The software yields fluorescence kinetic curves for objects in user-selected areas as well as complete false-colour maps of the essential fluorescence kinetics parameters (FM, FO, FV, FV/FM, etc.) showing a two-dimensional distribution of their values. Several examples demonstrate that records of fluorescence kinetics can be obtained with a reasonable signal-to-noise ratio with all standard microscope objectives and with object sizes reaching from segments of leaf tissue to individual algal cells or chloroplasts.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...