Library

X
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
    In situ scanning tunneling microscopy studies of the underpotential deposition of lead on gold (111) (1989)
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 93 (1989), S. 2181-2184 
    Details
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/j100343a001
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Nitrous oxide emissions from grass swards during the eighth year of elevated atmospheric pCO2 (Swiss FACE) (2003)
    Oxford, UK : Blackwell Science Ltd
    Global change biology 9 (2003), S. 0 
    Details
    ISSN: 1365-2486
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology , Energy, Environment Protection, Nuclear Power Engineering , Geography
    Notes: Emissions of N2O were measured during the growth season over a year from grass swards under ambient (360 μL L−1) and elevated (600 μL L−1) CO2 partial pressures at the Free Air Carbon dioxide Enrichment (FACE) experiment, Eschikon, Switzerland. Measurements were made following high (56 g N m−2 yr−1) and low (14 g N m−2 yr−1) rates of fertilizer application, split over 5 re-growth periods, to Lolium perenne, Trifolium repens and mixed Lolium/Trifolium swards. Elevated pCO2 increased annual emissions of N2O from the high fertilized Lolium and mixed Lolium/Trifolium swards resulting in increases in GWP (N2O emissions) of 179 and 111 g CO2 equivalents m−2, respectively, compared with the GWP of ambient pCO2 swards, but had no significant effect on annual emissions from Trifolium monoculture swards. The greater emissions from the high fertilized elevated pCO2Lolium swards were attributed to greater below-ground C allocation under elevated pCO2 providing the energy for denitrification in the presence of excess mineral N. An annual emission of 959 mg N2O-N m−2 yr−1 (1.7% of fertilizer N applied) was measured from the high fertilized Lolium sward under elevated pCO2. The magnitude of emissions varied throughout the year with 84% of the total emission from the elevated pCO2Lolium swards measured during the first two re-growths (April–June 2001). This was associated with higher rainfall and soil water contents at this time of year. Trends in emissions varied between the first two re-growths (April–June 2001) and the third, fourth and fifth re-growths (late June–October 2000), with available soil NO3− and rainfall explaining 70%, and soil water content explaining 72% of the variability in N2O in these periods, respectively. Caution is therefore required when extrapolating from short-term measurements to predict long-term responses to global climate change. Our findings are of global significance as increases in atmospheric concentrations of CO2 may, depending on sward composition and fertilizer management, increase greenhouse gas emissions of N2O, thereby exacerbating the forcing effect of elevated CO2 on global climate. Our results suggest that when applying high rates of N fertilizer to grassland systems, Trifolium repens swards, or a greater component of Trifolium in mixed swards, may minimize the negative effect of continued increasing atmospheric CO2 concentrations on global warming.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1365-2486.2003.00654.x
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Structure and reactivity of Zn-Cr mixed oxides. Role of non-stoichiometry in the catalytic synthesis of methanol (1989)
    Springer
    Catalysis letters 3 (1989), S. 65-72 
    Details
    ISSN: 1572-879X
    Keywords: Methanol synthesis ; zinc-chromium mixed oxides
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The catalytic behaviour of Zn/Cr mixed oxides with different compositions was investigated as a function of the bulk and surface properties. It was observed that non-stoichiometric spinel-type phases were stable also in the reaction conditions, in which zinc-surface enrichment did not occur. The maximum productivity in methanol was observed for monophasic non-stoichiometric spinel-type samples with a Zn/Cr ratio near to one, whereas the samples richest in zinc, for which a side phase, ZnO also was detected, showed a strong decrease in activity. The catalytic data support the hypothesis that non-stoichiometric spinel is the active phase for the synthesis of methanol on coprecipitated Zn-Cr catalysts.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00765056
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Planning systems and artificial intelligence (1988)
    Springer
    Annals of operations research 16 (1988), S. 1-12 
    Details
    ISSN: 1572-9338
    Keywords: Planning systems ; expert systems ; knowledge representation ; inspection plans ; construction plans
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics , Economics
    Notes: Abstract Traditional O.R. systems are compared with problem solving in Artificial Intelligence via Expert Systems. The discussion centers on explicit knowledge representation. The general aspects are illustrated by two planning systems: · LESP 2: A learning system for inspection plan generation · IDA: A system for finding functions and solutions in construction
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02283732
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    Preface (1988)
    Springer
    Annals of operations research 16 (1988), S. IX 
    Details
    ISSN: 1572-9338
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics , Economics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02283731
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 6
    Electronic Resource
    Electronic Resource
    Nonstandard methods in combinatorics and theoretical computer science (1988)
    Springer
    Studia logica 47 (1988), S. 181-191 
    Details
    ISSN: 1572-8730
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics , Philosophy
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00370549
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 7
    Electronic Resource
    Electronic Resource
    Beschleunigungsverletzung der HWS beim gurtgeschützten PKW-Fahrer (2000)
    Springer
    Der Unfallchirurg 103 (2000), S. 22-29 
    Details
    ISSN: 1433-044X
    Keywords: Schlüsselwörter PKW-Unfall • HWS Beschleunigungsverletzung • Beschwerdedauer • Verletzungsmechanismus • Prognostische Faktoren ; Key words Car accident • Acceleration related injury of the cervical spine • Duration of complaints • Injury mechanism • Prognostic factors
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary In an analysis of 3,838 restrained car drivers, the proportion of acceleration related injury of the cervical spine increased from under 10 % in 1985 to over 30 % in 1997. These injuries occurred mainly in the case of head-on or multiple collisions. Letters were sent to 1,136 of the injured persons, and of the 138 patients who returned the questionnaires, 121 (88 %) were still suffering from their symptoms. It was a question of pain (74 %), tension (6 %) and stiffness (5 %) in the head (27 %), neck (55 %) and shoulder (8 %) area. The duration of the complaints was the longest after multiple collisions. In addition to a slight influence of the accompanying injuries on the duration of complaints, the individual constitution seems to be an important determining factor. In order to resolve the difficulties of conducting of this retrospective study, prospective studies are necessary which include documentation of diagnosis, treatment protocols, duration and type of complaints.
    Notes: Zusammenfassung Bei einer Unfallanalyse von 3.838 gurtgeschützten, angeschnallten PKW-Fahrern stieg der Anteil der HWS Beschleunigungsverletzung von unter 10 % 1985 auf über 30 % 1997. Überwiegend traten diese bei frontalen oder mehrfachen Kollisionen auf; 1.136 dieser Verletzten wurden angeschrieben, um Dauer und Art eventueller Beschwerden zu ermitteln. Von den 138 Patienten, die den Fragebogen zurücksendeten, gaben 121 (88 %) das Auftreten von Beschwerden an. Es handelte sich dabei um Schmerzen (74 %), Verspannungen (6 %) und Bewegungseinschränkungen (5 %) im Bereich von Kopf (27 %), Nacken (55 %) und Schulter (8 %). Die Dauer der Beschwerden war am längsten nach mehrfachen Kollisionen und einem Beschwerdebeginn nach mehr als 24 h. Neben einem geringen Einfluß der Begleitverletzungen auf die Beschwerdedauer sind auch die individuelle Konstitution und Schmerzverarbeitung wesentliche Faktoren. Auch bei dieser retrospektiven Untersuchung bestanden erhebliche Schwierigkeiten hinsichtlich der Nachuntersuchung. Zur Lösung dieses Problems sind prospektive Studien mit strengen Protokollen bezüglich der Erfassung von Diagnosestellung, Behandlung, Beschwerdedauer und -art erforderlich.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001130050004
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 8
    Electronic Resource
    Electronic Resource
    Die Entstehung von Beckenringverletzungen im Straßenverkehr Medizinisch-technische Unfallanalyse (2000)
    Springer
    Der Unfallchirurg 103 (2000), S. 267-274 
    Details
    ISSN: 1433-044X
    Keywords: Schlüsselwörter PKW-Unfall ; Beckenringverletzung ; Verletzungsmechanismus ; Klassifikation ; Prävention ; Key words Car accident ; Pelvic injury ; Injury mechanism ; Classification ; Prevention
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Abstract During 1985 and 1993, 7,410 persons were injured in traffic accidents in the area of Hanover. Of these, 306 (4.1%) sustained a pelvic girdle injury. In 139 cases (45%), the pelvic girdle injuries were further classified (Pennal and Tile) and a technical reconstruction of the accident situation was performed. 52% were type A, 27% type B and 21% type C injuries. Some 47% of the casualties were vehicle occupants, 31% pedestrians, 12% motorcyclists and 10% cyclists. In restrained vehicle occupants pelvic girdle injuries occurred mostly in accidents with a delta-v of more than 30 km/h, whereas in unrestrained vehicle occupants, pedestrians and cyclists they also occurred with lower delta-v or collision speed. The percentage of type B and C injuries increased with higher velocities. In addition to further improvements in passive safety, lower collision speed or delta-v is necessary to reduce or prevent pelvic girdle injuries. The reconstruction of pelvic girdle injury mechanism in traffic accidents is possible, when both technical and medical parameters are considered.
    Notes: Zusammenfassung Zwischen 1985 und 1993 wurden 7.410 Verkehrsunfallverletzte im Großraum Hannover erfaßt; 306 (4,1%) erlitten eine Beckenringverletzung mit einem AIS〉2. In 139 (45%) Fällen erfolgte die Klassifikation der Beckenringverletzung nach Pennal und Tile und eine vollständige technische Rekonstruktion; 52% waren danach Typ-A-, 27% Typ-B- und 21% Typ-C-Verletzungen. Bei den Verletzten handelte es sich um 46% PKW-Insassen, 31% Fußgänger, 12% Motorradfahrer, 10% Fahrradfahrer und 1% LKW-Insassen. Die Beckenringverletzungen traten bei gurtgeschützten Fahrzeuginsassen fast ausschließlich bei einem Δ-v von über 30 km/h auf, dagegen bei ungeschützten Verkehrsteilnehmern (Fußgänger und Radfahrer) und bei nicht gurtgeschützten Fahrzeuginsassen auch schon bei Anprallgeschwindigkeiten bzw. Δ-v von 10–20 km/h. Bei höheren Geschwindigkeiten stieg der Anteil der B- und C-Verletzungen. Neben weiteren Verbesserungen der passiven Sicherheit ist zur Verminderung oder Vermeidung von Beckenringverletzungen eine Verringerung der “Unfallgeschwindigkeit” nötig. Unter Berücksichtigung aller technischen und klinischen Parameter wird eine Rekonstruktion des tatsächlichen Unfallmechanismus von Beckenringverletzungen ermöglicht.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001130050535
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 9
    Electronic Resource
    Electronic Resource
    Ein Herpes-simplex-Virus Typ 1-induzierter „Tumor” im Vestibulum nasi (2000)
    Springer
    HNO 48 (2000), S. 147-151 
    Details
    ISSN: 1433-0458
    Keywords: Schlüsselwörter ; Herpesviren ; Immunsuppression ; Resistenzentwicklung ; Key words ; Herpes virus ; Immunosuppression ; Treatment resistance
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary Herpes simplex viruses are known to be among the most common disease-causing microorganisms. Their prevalence can exceed 90% depending on the socioeconomic status of the population. Since the number of immunocompromised patients has increased because of the increased incidence in the acquired immunodeficiency syndrome and an increase in organ transplantation, herpes virus infection may have a greater clinical significance. While treatment of otherwise healthy individuals will not usually cause any clinical problems herpes infection in an immunocompromised patient can have severe consequences. Additionally, development of viral resistance can be observed that may require alternative drugs in treatment. We present a case history of a man with a B-cell chronic lymphocytic leukemia that was associated with a very unusual herpes simplex virus infection in the nasal vestibule. Possible causes for the development of resistance in herpes infections and the use of famciclovir and forscarnet as two therapeutic alternatives to aciclovir are discussed.
    Notes: Zusammenfassung Herpes-simplex-Viren gehören weltweit zu den häufigsten Krankheitserregern des Menschen mit einer in Abhängigkeit vom sozioökonomischen Status vorhandenen Prävalenz von über 90%. Das Bild der Herpesinfektion hat mit Zunahme der aus unterschiedlichsten Gründen (Organtransplantation, AIDS etc.) immunsupprimierten Patienten deutlich an Vielfalt gewonnen. Während die Therapie des immungesunden Patienten i. allg. keine Schwierigkeiten bereitet, kann eine Herpesinfektion bei immunsupprimierten Patienten zu einem ernsten eine Behandlung erforderlich machenden Krankheitsbild führen. Außerdem werden Resistenzentwicklungen beobachtet, die eine Therapie mit alternativen Medikamenten erforderlich machen. Wir stellen einen Patienten mit einer sehr ungewöhnlichen Manifestation einer Herpes-simplex-Infektion im Vestibulum nasi im Rahmen einer chronisch-lymphatischen B-Zell-Leukämie vor. Die möglichen Ursachen einer Resistenzentwicklung bei Herpesviren werden diskutiert und mit Famciclovir und Foscarnet zwei therapeutische Alternativen zum Aciclovir vorgestellt.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001060050023
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 10
    Electronic Resource
    Electronic Resource
    Frakturen der oberen Extremität bei gurtgeschützten PKW-Frontinsassen Verletzungsart und -häufigkeit in Abhängigkeit vom Unfallmechanismus (2000)
    Springer
    Der Unfallchirurg 103 (2000), S. 364-370 
    Details
    ISSN: 1433-044X
    Keywords: Schlüsselwörter PKW-Unfall ; Armfraktur ; Klassifikation ; Verletzungsmechanismus ; Prävention ; Key words Car accident ; Fracture of the arm ; Injury mechanism ; Classification ; Prevention
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Abstract During 1985 and 1995, 3,260 restrained car drivers (1,228 front seat passengers) were injured in 9,380 crashes involving cars. 179 (5.5%) (front seat passengers: 53.4%) of those sustained fractures, of the arm. Among the 384 single fractures the hand (25%), wrist (23%) and forearm (23%) were affected most often, elbow (9%), upper arm (10%) and shoulder (10%) rather seldom. Half of the evaluated fractures of the long tubular bones were type A-fractures due to the AO classification and the other two quarters, respectively type B- and C-injuries in each case. 16% were open fractures. No considerable differences of the injury mechanism were found comparing drivers and front seat passengers. Since over half of all fractures resulted from a direct impact to the hand and/or arm, modifications are necessary in order to improve the energy absorption by means of padding the dashboard and the inner door. The use of side- and front-airbags could serve as an additional auxiliary equipment, as long as it doesn't induce a supplemental stress, through unfolding of the airbag.
    Notes: Zusammenfassung Bei 9.380 Unfällen mit PKW Beteiligung zwischen 1985 und 1995 im Großraum Hannover wurden 4.488 gurtgeschützte PKW-Frontinsassen (3.260 Fahrer, 1.228 Beifahrer) verletzt und 232 (5,2%) erlitten Frakturen der oberen Extremität (179 Fahrer, 5,5%), (53 Beifahrer, 4,3%). Von den 384 einzelnen Frakturen waren Hand (26%), Handgelenk (22%) und Unterarm (23%) am häufigsten betroffen, Ellbogen (9%), Oberarm (10%) und Schulter (10%) eher selten. Bei der Hälfte der evaluierten Frakturen der langen Röhrenknochen handelte es sich um Brüche des Typs A gemäß der AO-Klassifikation und zu je 1/4 um Typ B- und C-Verletzungen. Der Anteil der offenen Frakturen betrug 16%. Zwischen Fahrer und Beifahrer wurden keine wesentlichen Unterschiede in der Verletzungsentstehung beobachtet. Da über die Hälfte aller Frakturen im Rahmen eines Direktanpralles von Hand und/oder Arm erfolgen, sind Maßnahmen zur Prävention im wesentlichen in einer optimalen Energieabsorption durch Polsterung des Armaturenbrettes und der Türfläche zu sehen. Die Verwendung von Seitenairbags und auch von Front-Airbags könnten hier einen zusätzlichen Schutz liefern, sofern sie nicht im Falle einer Auslösung und zusätzliche Belastungen induzieren.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001130050551
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...