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  • 1
    Electronic Resource
    Electronic Resource
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Microbiology 32 (1978), S. 285-300 
    ISSN: 0066-4227
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Biology
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of the American Water Resources Association 30 (1994), S. 0 
    ISSN: 1752-1688
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Architecture, Civil Engineering, Surveying , Geography
    Notes: : The Rational Method continues to be the most widely used approach for estimating P-year return frequency peak flow rates for small catchments of about one square mile or less in area. The Balanced Design Storm unit hydrograph method is perhaps the second most widely used technique for estimating peak flow rates (and is the most widely used method for developing runoff hydrographs) but is generally considered to be more accurate than the Rational Method. In this paper, both of these T-year return frequency peak flow rate estimators are shown to be mathematically comparable. The close similarity between these two approximators may help explain why the Rational Method continues to be widely used even though other more computationally sophisticated techniques are readily available due to widespread computer software.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Stochastic environmental research and risk assessment 2 (1988), S. 213-239 
    ISSN: 1436-3259
    Keywords: Unit hydrograph ; effective rainfall ; linear routing ; link-node model ; probabilistic model
    Source: Springer Online Journal Archives 1860-2000
    Topics: Architecture, Civil Engineering, Surveying , Energy, Environment Protection, Nuclear Power Engineering , Geography , Geosciences
    Notes: Abstract The design storm approach, where the subject criterion variable is evaluated by using a synthetic storm pattern composed of identical return frequencies of storm pattern input, is shown to be an effective approximation to a considerably more complex probabilistic model. The single area unit hydrograph technique is shown to be an accurate mathematical model of a highly discretized catchment with linear routing for channel flow approximation, and effective rainfalls in subareas which are linear with respect to effective rainfall output for a selected “loss” function. The use of a simple “loss” function which directly equates to the distribution of rainfall depth-duration statistics (such as a constant fraction of rainfall, or a ϕ-index model) is shown to allow the pooling of data and thereby provide a higher level of statistical significance (in estimating T-year outputs for a hydrologic criterion variable) than use of an arbitrary “loss” function. The above design storm unit hydrograph approach is shown to provide the T-year estimate of a criterion variable when using rainfall data to estimate runoff.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Stochastic environmental research and risk assessment 2 (1988), S. 151-155 
    ISSN: 1436-3259
    Source: Springer Online Journal Archives 1860-2000
    Topics: Architecture, Civil Engineering, Surveying , Energy, Environment Protection, Nuclear Power Engineering , Geography , Geosciences
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Stochastic environmental research and risk assessment 8 (1994), S. 259-268 
    ISSN: 1436-3259
    Keywords: Rainfall ; runoff ; modeling ; uncertainty ; stochastics ; stochastic integral equations
    Source: Springer Online Journal Archives 1860-2000
    Topics: Architecture, Civil Engineering, Surveying , Energy, Environment Protection, Nuclear Power Engineering , Geography , Geosciences
    Notes: Abstract In this paper a very general rainfall-runoff model structure (described below) is shown to reduce to a unit hydrograph model structure. For the general model, a multi-linear unit hydrograph approach is used to develop subarea runoff, and is coupled to a multi-linear channel flow routing method to develop a link-node rainfall-runoff model network. The spatial and temporal rainfall distribution over the catchment is probabilistically related to a known rainfall data source located in the catchment in order to account for the stochastic nature of rainfall with respect to the rain gauge measured data. The resulting link node model structure is a series of stochastic integral equations, one equation for each subarea. A cumulative stochastic integral equation is developed as a sum of the above series, and includes the complete spatial and temporal variabilities of the rainfall over the catchment. The resulting stochastic integral equation is seen to be an extension of the well-known single area unit hydrograph method, except that the model output of a runoff hydrograph is a distribution of outcomes (or realizations) when applied to problems involving prediction of storm runoff; that is, the model output is a set of probable runoff hydrographs, each outcome being the results of calibration to a known storm event.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Mathematische Annalen 158 (1965), S. 1-5 
    ISSN: 1432-1807
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    European journal of epidemiology 3 (1987), S. 209-215 
    ISSN: 1573-7284
    Keywords: Condyloma acuminatum ; Epidemiology Clinical ; Therapeutic
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Condyloma acuminatum, CA or genital warts, are benign fibro-epithelial tumors with a predilection for moist environments, especially mucosal surfaces. This sexually transmitted disease (STD) is increasing rapidly in incidence. The lesions are associated with a number of human papillomavirus (HPV) types. Some HPV types are closely linked with genital (especially cervical) dysplasia and neoplasia. Treatment consists of such traditional modalities as podophyllin, cryotherapy or surgical excision and, more recently, administration of interferon (IFN).
    Type of Medium: Electronic Resource
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  • 8
    ISSN: 1439-0973
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Bei 208 Patienten wurde wegen Verdachts auf Herpes simplex-Enzephalitis eine Gehirnbiopsie durchgeführt. Nach Randomisierung wurde entweder mit Vidarabin in einer Dosierung von 15 mg/kg pro Tag oder mit 30 mg/kg/Tag Aciclovir für zehn Tage behandelt. Bei 69 der biopsierten Patienten (33%) wurde die Diagnose bestätigt, von ihnen erhielten 37 Vidarabin und 32 Aciclovir. Die demographischen Charakteristika der beiden Gruppen waren mit Ausnahme des Alters vergleichbar. 18 Monate nach der Therapie waren 72% der mit Aciclovir behandelten und 46% der mit Vidarabin behandelten Patienten am Leben (p=0,008). Nach Ausgleich der Altersunterschiede in den beiden Patientengruppen mittels Multivarianten-Regressionsanalyse blieb Aciclovir gegenüber Vidarabin immer noch therapeutisch überlegen (p=0,041). Je nach Grad der Bewußtseinsstörung zu Beginn der Therapie war die Sterblichkeit unterschiedlich hoch. Die Letalität nahm von Lethargie zu Semikoma und Koma von 42% auf 46% und 67% bei mit Vidarabin und von 0% auf 25% und 25% bei mit Aciclovir behandelten Patienten zu. Nachuntersuchungen bezüglich Restschäden sechs Monate nach Therapie ergaben bei fünf mit Vidarabin (14%) und 12 mit Aciclovir (38%) behandelten Patienten eine vollkommene Wiederherstellung und bei acht (22%) bzw. drei (9%) eine mäßiggradige zerebrale Funktionseinschränkung. Die Unterschiede der Therapieergebnisse erwiesen sich bei Anwendung eines angepaßten Punktesystems als signifikant mit p=0,02 (Zwei-Proben-Test nach Wilcoxon). Bei einer Punktezahl von mehr als 10 im Glasgow Koma-Schema war das Ergebnis nach Aciclovir-Behandlung am günstigsten. Bei bewußtseinsgestörten Patienten mit erhaltenen Reflexen und Augenreaktionen auf Schmerzreiz traten keine Todesfälle auf, 50% der Patienten wurden völlig wiederhergestellt. Aufgrund dieser Daten ist Aciclovir als Therapie der Wahl bei bioptisch gesicherter Herpes simplex-Enzephalitis anzusehen.
    Notes: Summary A total of 208 patients underwent brain biopsy for presumptive herpes simplex encephalitis and were randomized to receive either vidarabine, vira-A, at 15 mg/kg/day, or acyclovir, at 30 mg/kg/day for ten days. 69 patients (33%) had biopsy-proven disease; 37 received vira-A and 32 acyclovir. With the exception of age, patient populations were balanced for demographic characteristics. Overall survival for acyclovir recipients was 72% compared with 46% for vira-A-treated patients 18 months after therapy (p=0.008). After adjustment for differences of age between treatment populations by multivariant regression analyses, acyclovir treatment remained superior to vidarabine therapy (p=0.041). Mortality varied according to the level of consciousness at the onset of therapy. For lethargic, semicomatose and comatose patients, mortality was 42%, 46%, and 67%, respectively, for the vira-A-treated patients and 0%, 25% and 25%, respectively, for acyclovir-treated patients. Six months post-therapy morbidity assessments revealed five (14%) vira-A versus 12 (38%) acyclovir recipients who had returned to normal function, while eight (22%) and three (9%), respectively, had moderate debility. Outcome differences were significant (p=0.02; Wilcoxon, 2-sample test) using an adapted scoring system. Age and Glasgow coma scale 〉 10 predicted the best outcome following acyclovir treatment. Disoriented patients who flex and respond by eye to pain had no mortality and 50% returned to normal. These data indicate that acyclovir is the treatment of choice for biopsy-proven herpes simplex encephalitis.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    New York, NY [u.a.] : Wiley-Blackwell
    Numerical Methods for Partial Differential Equations 7 (1991), S. 339-346 
    ISSN: 0749-159X
    Keywords: Mathematics and Statistics ; Numerical Methods
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mathematics
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
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