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  • 1
    ISSN: 0931-1890
    Keywords: Key words Aleppo pine ; Climate change ; Water stress ; Cavitation ; Transpiration
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract  The present study was carried out to elucidate the response mechanisms of 50-year-old Pinus halepensis Mill. trees to a long-term and severe drought. The amount of water available to trees was artificially restricted for 12 months by covering the soil with a plastic roof. Over the short term a direct and rapid impact of drought was evident on the water relations and gas exchanges of trees: as the soil dried out in the Spring, there was a concurrent decrease of predawn water potential; transpiration was strongly reduced by stomatal closure. Seasonal changes in the water volume fractions of twig and stem xylem were observed and interpreted as the result of cavitation and refilling in the xylem. When droughted trees recovered to a more favourable water status, refilling of embolized xylem was observed; twig predawn water potentials were still negative in the period when the embolism was reversed in the twig xylem. A few months after the removal of the covering, no differences in whole plant hydraulic resistance were observed between droughted and control trees. Needle and shoot elongation and stem radial growth were considerably reduced in droughted trees; no strategy of trees to allocate carbon preferentially to the stem conducting tissues was apparent throughout the experiment. An after-effect of the drought on growth was observed.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Pure and applied geophysics 8 (1946), S. 1-42 
    ISSN: 1420-9136
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Description / Table of Contents: Summary The frequency of the earthquakes in Albania is a sign of the general instability of this territory. The progress of the geological knowledge in Albania gives to make a tectonic synthesis; the results are compared with the seismic characters. The seismology of the region is essentially bonded to the tectonics; in the South-Albania by consequence specially of tectonic settlements, in the North by tangential movements, while probably in the costal plain are continuous movements of emersion. In appendix are given list of earthquales and description of the geological situation of the towns and greatest villages, also in account of the buildings.
    Abstract: Zusammenfassung Die Erdbebentätigkeit in Albanien stellt ein scharfe Zeichen der allgemeinen Unbeständigkeit dieser Teil des Adria-Beckens dar. Da die Fortschritte unserer geologischen Kentnisse eine tektonische Synthese erlauben, werden die betreffenden Ergebnisse mit den seismischen Eigentümlichkeiten verglichen. Aus der Erörterung folgt wie die Seismizität der Gegend von den tektonischen Verhätnisse abhängt, nämlich in der Weise, dass in Süd-Albanien als eine Folge der Setzungsbewegungen zu betrachten ist, während in Nord-Albanien mit den Tangential-Bewegungen verknüpft sein soll. An der Küste verschiedene Anzeige lassen stetige Hebungsbewegungen vermuten. Am Schluss folgt ein Verzeichnis der wichtigsten Erdbeben, sowie Angabe über die geologische Lage der Städte und grossen Dörfer im Verhältnis mit der konstruktiven Eigentümlichkeiten der Gebäude.
    Notes: Riassunto La frequenza dei terremoti in Albania à altamente significativa di una generale instabilità di quella parte del territorio adriatico. Permettendo ora i progressi della conoscenza geologica del territorio albanese di tentare una sintesi tettonica, i risultati di questa vengono messi a confronto con i caratteri sismici della regione. Dalla discussione di tutti gli elementi attualmente noti si espone come la sismicità della regione, dipendendo in linea generale dalle condizioni tettoniche, si manifesta nelle regioni meridionali come conseguenza specialmente di movimenti di assestamento, mentre nelle settentrionali para ancora in collegamento con i moti tangenziali; nella regione costiera diversi indizi farebbero ritenere probabile dei continuati moti di emersione. Seguono un elenco dei principali terremoti avvenuti nella regione ed alcuni dati sulla posizione geologica dei centri abitati e sulle caratteristiche costruttive degli edifici.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    European journal of clinical pharmacology 22 (1982), S. 213-216 
    ISSN: 1432-1041
    Keywords: naloxone ; haloperidol ; thyrotropin releasing hormone ; adenohypophyseal ; GH ; LH ; FSH ; PRL ; TSH ; cortisol
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Summary Naloxone 0.8 mg im administered to eight healthy subjects did not affect the serum levels of GH, LH, FSH, PRL, TSH and cortisol. Pretreatment with naloxone 0.8 mg increased TRH-induced TSH and PRL release in six healthy subjects. The same pretreatment caused an enhancement of haloperidol-induced PRL secretion in further other group of six subjects.
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 1432-1041
    Keywords: nalorphine ; hormonal changes ; cortisol ; PRL ; GH ; TSH ; LH ; FSH
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Summary The effects of nalorphine 5 mg i. m., a partial opiate antagonist, on circulating levels of PRL, GH, TSH, LH, FSH and cortisol were studied in six healthy men. Nalorphine produced a prompt and sharp increase in serum PRL and a small, delayed rise in serum GH. Serum LH and cortisol decreased after drug administration and no change in serum FSH and TSH was observed. These findings are discussed and a possible site of action of nalorphine is suggested.
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    European journal of clinical pharmacology 22 (1982), S. 375-376 
    ISSN: 1432-1041
    Keywords: nalorphine ; bromocriptine ; sulpiride ; prolactin release
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Summary Nalorphine 5 mg im caused a significant increase in serum PRL in 8 healthy volunteers. Pretreatment with bromocriptine 5 mg inhibited the nalorphine-induced release of PRL, whereas sulpiride administration enhanced it.
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    European journal of clinical pharmacology 41 (1991), S. 57-59 
    ISSN: 1432-1041
    Keywords: Flecainide ; pharmacokinetics ; ventricular arrhythmias
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Summary The pharmacokinetics of flecainide has been studied in 12 patients with ventricular arrhythmias, both after single administration and during chronic treatment. Both the half-life and the AUC were significantly increased during chronic treatment. This suggests that the kinetics of flecainide might be non-linear also in patients with normal kidney and liver function. The increase in plasma flecainide levels during chronic treatment could not be predicted, so close monitoring of its plasma levels is advisable.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Bulletin of environmental contamination and toxicology 20 (1978), S. 1-8 
    ISSN: 1432-0800
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Notes: Summary Chlordane and heptachlor at 50 gmg/1 reduced cell density, chlorophylla per unit volume of culture,14C uptake per cell and carbon fixation per unit of chlorophylla in the marine dinoflagellateExuviella baltica Lohmann. The concentration of chlorophylla per cell was not reduced, however, by treatment with either compound. Chlordane was more toxic than heptachlor at this concentration, and caused the disintegration of many cells, thus affecting particle size distribution in the cultures. In nature, such an inhibition and shift in size class distribution could affect the availability of food for particle-feeding herbivores.
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    European journal of clinical pharmacology 36 (1989), S. 99-100 
    ISSN: 1432-1041
    Keywords: digoxin ; captopril ; congestive heart failure ; pharmacological interaction
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
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  • 9
    ISSN: 1432-1041
    Keywords: propafenone ; antiarrhythmic drug ; therapeutic range ; pharmacokinetics
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Summary In 11 patients with stable premature ventricular beats, the kinetics of single (150 and 300 mg) and multiple (150 mg t.i.d. and 300 mg t.i.d.) oral doses of propafenone were studied with reference to arrhythmia suppression. During the acute phase detectable plasma levels of the drug were achieved only with the higher dose. In 8 out of 10 patients the antiarrhythmic effect was obtained with the 300 mg dose, which was found to predict responsiveness at steady-state. During the chronic phase, antiarrhythmic efficacy was obtained with the lower dose regimen (150 mg t.i.d.) in half of those patients. A wide range of effective plasma levels was observed. The previously suggested therapeutic range (0.5–2.0 µg/ml) was not adequate in predicting either antiarrhythmic activity or adverse effects. The results show the role of propafenone metabolites in determining total antiarrhythmic action.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    Decisions in economics and finance 16 (1993), S. 73-86 
    ISSN: 1129-6569
    Keywords: project analysis ; linear programming ; internal financial law (IFL) ; financial leverage ; discounted cash-flows (DCF) decomposition
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics , Economics
    Description / Table of Contents: Riassunto Si definisce un modello generale (PAULA) per la valutazione, selezione e gestione ottimale di progetti certi alternativi. Sfruttando i risvolti formali e finanziari dei problemi lineari associati (diretto e duale), si formulano poi due proposte per definire una legge finanziaria interna (IFL) ottimale, utili sia per abbattere la molteplicità intrinseca delleIFL, sia per evitare risultati economicamente arbitrari nel loro uso.
    Notes: Abstract We define a general model (called PAULA) for the valuation, optimal management and selection among mutually exclusive safe projects. By exploiting the formal and financial features of the associated linear problems (primal and dual), we put forward two proposals to define an optimal internal financial law (IFL). They may be used to reduce the multiplicity of the IFLs and to avoid economically arbitrary outcomes.
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