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
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 67 (1996), S. 417-422 
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: We describe the advantages of using the pseudorandom time-of-flight (TOF) technique for measuring velocity distributions together with the TOF mass spectrometric detection. The basic idea of the method is the successive measurement of abundance spectra with the TOF mass spectrometer correlated with each channel of the pseudorandom sequence. Extraction of the intensities of each mass and subsequent cross correlation with the pseudorandom sequence leads to the TOF and thus the velocity distributions. The proposed technique can substantially reduce the data acquisition time in systems for which many different reaction products are expected such as in cluster research. An illustration of the efficiency is presented using angular resolved TOF distributions for products of the reaction of sodium clusters Nan with O2. © 1996 American Institute of Physics.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 2
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Child 25 (1999), S. 0 
    ISSN: 1365-2214
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine , Psychology
    Notes: As fellow citizens, all children need a stimulating social environment that helps them develop self-respect and social competence. Developmental research, however, shows, that many children do not or cannot fulfil the social, moral or cognitive developmental tasks which are necessary for healthy development. A lack of opportunities for gaining meaningful social experiences can be seen as a major source of psychosocial and behavioural problems in children. On the contrary, active commitment in educational environments such as the school and the neighbourhood, helps them to get an increasingly better grip on their own lives and health. Moreover, such ‘children's participation’ appears to have a protective and preventive effect for health-related problems. Therefore, it is argued, that ‘enablement’, a key-element of both the Ottawa Charter on Health Promotion and the International Convention on the Rights of the Child, should be at the core of every child-health promotion programme.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 3
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Child 23 (1997), S. 0 
    ISSN: 1365-2214
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine , Psychology
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 4
    ISSN: 1433-0458
    Keywords: Schlüsselwörter Septumschleimhautläsion ; Nasenseptum ; Septumkorrektur ; Nase ; Key words Mucosal lesions ; Nasal septum ; Septal surgery ; Nose
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary Mucosal lesions of the nasal septum during septal surgery are frequent, but there is scarce information in the literature about their outcome. In 283 operations of the nasal septum, 92 (32.5%) mucosal lesions occurred, 67 of these could be documented and classified 1, 3 and 6 months postoperatively. Although there was no therapy in 93% (74 cases) of the one-sided lesions, no permanent septal perforation was seen. A total of 7% (six cases) were treated by suture or lyophilised dura combined with tissue adhesive. On the other hand, double-sided and correspondent lesions (12 cases: six without therapy, four sutures, one lyophilised fascia, one tissue adhesive) showed a perforation in five cases without any symptoms. This represents 1.7% of all operations of the nasal septum and 7.4% of all recorded mucosal lesions of the nasal septum. Although the number of examinations are still few, it might be justifiable to conclude that one-sided lesions of the nasal septum need no specific therapy. All bilateral corresponding lesions, even those smaller than 5 mm, should be treated by one-sided suture in the anterior septum and with tissue adhesive in the posterior septum. The use of cartilage, bone or fascia alone is insufficient. Large defects of the mucosa should be treated by maximal therapy, i.e. covering with lyophilised fascia or dura, underlaying of cartilage or bone and using tissue adhesive.
    Notes: Zusammenfassung Intraoperativ entstandene Septumschleimhautläsionen werden als Hauptursache für bleibende Septumperforationen genannt. Eine erfolgreiche Versorgung symptomatischer Septumperforationen gestaltet sich oft schwierig und aufwendig. Zwar sollte es Ziel jedes rhinochirurgischen Eingriffs sein, die Schleimhaut zu schonen, manchmal lassen sich jedoch Läsionen nicht vermeiden. In der Literatur existieren nur unzureichende und oft voneinander abweichende Empfehlungen zur Versorgung intraoperativ entstandener Septumschleimhautläsionen. Ziel dieser Studie war es, Aussagen über den Verlauf von intraoperativ entstandenen und versorgten Septumschleimhautläsionen zu machen und differenzierte Therapievorschläge zu präsentieren. Bei 283 Operationen am Nasenseptum kam es in 32,5% der Fälle zu einer intraoperativen Septumschleimhautperforation; 67 Patienten, bei denen es während eines Septumeingriffes zu einer Septumschleimhautläsion kam, konnten postoperativ am Entlassungstag, nach einem, drei und sechs Monaten nachuntersucht werden. Obwohl 93% der einseitigen Einrisse (74 Fälle) nicht therapiert wurden, kam es zu keiner bleibenden Septumperforation. Dabei wurde in 6 Fällen eine Naht gesetzt, oder ein Verschluß mittels eingelegter lyophilisierter Dura und Fixation mit Fibrinkleber durchgeführt. Andererseits zeigten sich bei 12 doppelseitigen Septumperforationen (6 ohne Therapie, 4 Nahtversorgungen, 1 Versorgung mit lyophilisierter Dura) 5 bleibende Septumschleimhautdefekte. Dies entspricht 1,7% aller Operationen am Nasenseptum bzw. 7,4% aller intraoperativen Schleimhautperforationen. Trotz noch geringer Fallzahlen scheinen sich folgende Therapieempfehlungen abzuzeichnen: Streng einseitige, kleine Schleimhautläsionen verursachen keine bleibenden Perforationen und bedürfen daher keiner intraoperativen Versorgung. Korresponierende Schleimhauteinrisse selbst in geringer Größe können jedoch zu bleibenden Perforationen führen. Im vorderen Septum sollte daher eine Nahtversorgung, im dorsalen Septum eine Gewebeklebung eingesetzt werden. Größere Schleimhautdefekte erfordern eine Maximalversorgung mit Unterfütterung durch lyophilisiertes Fremdmaterial, Knorpel oder Knochen und zusätzlicher Fixierung mittels Fibrinkleber.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 5
    Electronic Resource
    Electronic Resource
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 287-288 (Aug. 1998), p. 413-418 
    ISSN: 1662-9752
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Der Radiologe 37 (1997), S. 124-129 
    ISSN: 1432-2102
    Keywords: Schlüsselwörter Nacht- und Bereitschaftsdienst ; Gesundheitsstrukturgesetz ; Key words Night radiology ; Government regulation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary This report deals with radiologic examinations outside official working hours in a German university hospital and the influence of new government regulations. A total of 65,113 radiologic examinations were requested and performed outside official working hours between 1 July 1990 and 30 Juni 1994. The data were analyzed according to the age and sex of this patient population compared with the entire population studied within this 4-year period. Further analysis included the time of the study, the organ systems investigated, and the radiologic technique. About one-third of requests occurred between 16.00 and 20.00 hours on normal working days and, thus, could be taken care of by late shifts. Another third covers the time between 20.00 and 08.00 hours in the morning, which requires in-house staff (medical and technical). The remainder of the requests occurred during holidays and weekends in the daytime. The most common request in this analysis was for portable chest examination. About 50 % of all portable chest examinations were performed outside regular working hours. In all, 17.2 % of all requests involved CT and MRT studies. Government regulation did not change the number, technique, and frequency of radiologic examinations outside official working hours.
    Notes: Zusammenfassung In der Zeit vom 01. Juli 1990 bis zum 30. Juni 1994 wurden 65 113 Untersuchungen außerhalb der Regeldienstzeit durchgeführt. Die vorliegende Analyse schlüsselt die Leistungen auf nach Alter und Geschlecht im Vergleich zum Gesamtkollektiv dieser Vierjahresperiode, nach dem Zeitpunkt der Untersuchung, nach den untersuchten Organen und nach der eingesetzten Technik. Ca. 1/3 der Leistungen fallen in den Zeitraum zwischen 16.00 und 20.00 Uhr und könnten durch einen versetzten Tagdienst aufgefangen werden. Ein weiteres Drittel entfällt auf den Zeitraum zwischen 20.00 und 8.00 Uhr am Folgetag. Der Rest entfällt auf Feiertage und Wochenenden. Die häufigste Anforderung betrifft Thoraxaufnahmen auf den Intensivstationen. Etwa die Hälfte dieser Untersuchungen werden außerhalb der Dienstzeit angefertigt; 17,2 % der Untersuchungen im Nacht- und Bereitschaftsdienst betreffen Computer- und Magnetresonanztomographie. Das am 01. 01. 93 in Kraft getretene Gesundheitsstrukturgesetz führte zu keinen nennenswerten Verschiebungen hinsichtlich Art, Umfang und Häufigkeit der Untersuchungen im Nacht- und Bereitschaftsdienst.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Graefe's archive for clinical and experimental ophthalmology 236 (1998), S. 617-624 
    ISSN: 1435-702X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract  · Background: The study reported here was performed to investigate morphologic intraocular reactions on the surface of metallic intraocular foreign bodies (IOFB) with scanning electron microscopy. · Methods: Twenty-seven extracted IOFB were investigated. Of these, 22 were situated in the vitreous body; 19 had contact with the retina. Five IOFB had been removed from the anterior segment (control group). The duration of intraocular retention was 6 h to 24 days. Immediately after microsurgical removal the IOFB were fixed, dehydrated, dried, sputter-coated and investigated with a scanning electron microscope. Two IOFB from the vitreous were treated for collagen preservation.  · Results: Eighteen of 20 intravitreal IOFB showed fibers of fibrin on its surface; 11 of 20 were covered with a homogeneous layer. Within this layer a net of collagen fibers was detectable. A major cellular reaction was observed only on IOFB that injured the retina, pigment epithelium and choroid. · Conclusions: This morphologic study shows that: (1) a fibrin net develops in the vitreous around intravitreal IOFB; (2) depositions of amorphous material into the spaces of this net lead to dense coverage of the IOFB; (3) cellular reactions are not condition for the development of this coverage; (4) laceration of the retina induces a fibrocellular response.
    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
    Graefe's archive for clinical and experimental ophthalmology 237 (1999), S. 153-156 
    ISSN: 1435-702X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract  · Background: A study was performed to determine the amount of intraocular retained perfluorodecalin after macroscopic complete removal. · Material and methods: Freshly enucleated pig eyes had the anterior segment removed, vitrectomy was carried out, and the eye cups were placed in 0.9% buffered saline solution. One millilitre of perfluorodecalin was instilled for 30 min, followed by a fluid-air exchange. Perfluorodecalin was macroscopically removed. The retina was rinsed twice with 0.9% buffered saline solution. In a second group no rinsing was done, while in a third group no fluid-air exchange was performed. Finally all eye cups were filled with 2.0 ml of the perfluoropolyether Hostinert 130 to dissolve retained perfluorodecalin. The quantity of perfluorodecalin in perfluoropolyether was determined by gas chromatography. · Results: Retained perfluorodecalin was detected in all experiments. The smallest portion of perfluorodecalin retained (range 0.04–0.08, mean 0.058%, SD ±0.015%) was observed without fluid-air exchange. After fluid-air exchange the portion with rinsing was 0.11–0.27% (mean 0.21%, SD ±0.059%) and that without rinsing was 0.51–0.69% (mean 0.60%, SD ±0.065%). · Conclusions: Even after macroscopic complete removal of perfluorodecalin a thin layer remains on the retina. If intraoperative fluid-gas exchange is necessary, multiple rinsing with 0.9% buffered saline solution should be performed to reduce the amount of perfluorocarbon liquid retained.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 9
    ISSN: 1438-2385
    Source: Springer Online Journal Archives 1860-2000
    Topics: Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 10
    ISSN: 1573-501X
    Keywords: automated synthesis ; combinatorial chemistry ; hydantoins ; imidazolidinediones ; solid phase synthesis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Starting from carboxy-linked amino acids on trityl functionalized polystyrene resin a highly efficient solid-phase synthesis of hydantoins via N, N′-ureas was elaborated. The polymer-bound hydantoins can be used as scaffolds for further combinatorial transformations, such as alkylation. Cleavage from the resins yielded the corresponding hydantoins in good yields and purities as shown by ESI-MS and HPLC.
    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...