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  • Springer  (108)
  • Blackwell Futura Publishing, Inc.  (1)
  • Munksgaard International Publishers
  • 2000-2004  (16)
  • 1995-1999  (81)
  • 1960-1964  (13)
Document type
Keywords
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Year
  • 1
    Electronic Resource
    Electronic Resource
    Activation properties of the redox-modulated chloroplast enzymes glyceraldehyde 3-phosphate dehydrogenase and fructose-1,6-bisphosphatase (2000)
    Copenhagen : Munksgaard International Publishers
    Physiologia plantarum 110 (2000), S. 0 
    Details
    ISSN: 1399-3054
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Rapid changes of enzyme activity are obtained by post-translational modification of cysteine residues of some chloroplast enzymes. Individual fine-tuning is achieved by specific factors acting upon the redox cycle. In order to study the regulatory properties of these enzymes, they are purified from leaves or in a recombinant form from Escherichia coli. The various factors acting upon the enzyme in vivo can be simulated in vitro. However, in these studies, some subtle technical problems can be encountered. Two cases are presented in this article, and an attempt is made to explain some previous, seemingly contradictory results. The Calvin-cycle enzyme glyceraldehyde 3-phosphate dehydrogenase in its less active A8B8 form can be dissociated and thereby activated in vitro simply by diluting out the protein. On the other hand, activation requires the presence of reduced thioredoxin (Td) and an increase in ionic strength when performed at a high protein concentration, as present in vivo. Chloroplast fructose-1,6-bisphosphatase (FBPase) is purified from E. coli as an enzyme similar to that purified from leaves. However, using the standard protocol for lysis of the bacteria leads to a form with some unusual properties as changed isoelectric point, lack of Ca2+/fructose-1,6-bisphosphate (FBP) dependency of reductive activation, and lack of activity at high pH and high Mg2+ concentration. These observations are used in order to better understand the characteristics of the activation/inactivation process.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1399-3054.2000.1100307.x
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  • 2
    Electronic Resource
    Electronic Resource
    Pacemaker Therapy in Isolated Congenital Complete Atrioventricular Block (2002)
    Oxford, UK : Blackwell Futura Publishing, Inc.
    Pacing and clinical electrophysiology 25 (2002), S. 0 
    Details
    ISSN: 1540-8159
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: BREUR, J.M.P.J., et al.: Pacemaker Therapy in Isolated Congenital Complete Atrioventricular Block. The aim of this study was to evaluate the effect of pacemaker (PM) therapy in patients with isolated congenital complete atrioventricular block (CCAVB). Patients with CCAVB eventually qualify for PM implantation, however, timing remains controversial. Retrospective evaluation of left ventricular end-diastolic diameter (LVEDD), shortening fraction (SF), and cardiothoracic ratio (CTR) in 149 CCAVB patients, before, at, and after PM implantation was carried out. LVEDD shows an average increase of 0.48%/month in non-PM patients, and an average decrease of 0.88%/month in PM patients. SF shows an average increase of 0.10%/month in non-PM, and an average decrease of 0.32%/month in PM patients. CTR shows an average increase of 0.02%/month in non-PM, and an average decrease of 0.19%/month in PM patients. The difference between the non-PM and PM groups is significant (P = 0.05) for all variables. Symptomatic patients show no significant change in LVEDD after PM therapy (from 66.5% before to 68.5% after PM therapy). Asymptomatic patients do show a significant (P 〈 0.001) decrease in LVEDD after PM therapy (from 78.4% before to 73.3% after PM therapy). CTR does not differ significantly between symptomatic and asymptomatic patients before PM therapy (58% and 57%, respectively). CTR does differ significantly (P 〈 0.001) between symptomatic and asymptomatic patients after PM therapy (52% and 48%, respectively). Heart size and SF are increased in most patients with isolated CCAVB. PM implantation is associated with a decrease in heart size and normalization of SF in most patients. Indications for PM therapy in children may require reevaluation in asymptomatic patients with increased cardiac size and decreased cardiac function.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1460-9592.2002.01685.x
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  • 3
    Electronic Resource
    Electronic Resource
    Buchbesprechungen (1996)
    Springer
    Helgoland marine research 50 (1996), S. 539-549 
    Details
    ISSN: 1438-3888
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02367166
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  • 4
    Electronic Resource
    Electronic Resource
    Chemische Zusammensetzung von Samen und Samenschale der Ackerbohne (Vicia faba L.) (1995)
    Springer
    European food research and technology 200 (1995), S. 229-232 
    Details
    ISSN: 1438-2385
    Source: Springer Online Journal Archives 1860-2000
    Topics: Process Engineering, Biotechnology, Nutrition Technology
    Description / Table of Contents: Zusammenfassung Verschiedene chemische Bestandteile des Samens und der Samenschale der Ackerbohne (Vicia faba L.) wurden untersucht. Die Samen enthalten einen relativ hohen Roheiweiß- (27,5%), niedrigen Rohfett(3,36%) und Ligningehalt (2,65%). Die Samenschale hat eine hohe Faserkonzentration und ist eine bedeutende Ca-Quelle (1,86 g/kg TM). Die höchsten Makroelementkonzentrationen wurden aus Kalium, Phosphor und Magnesium registriert. Die Hauptmikroelemente (Fe, Mn, Cu, Zn) kommen in bedeutend höheren Konzentrationen in den Samen als in der Samenschale vor. Die Aminosäurezusammensetzung der Samen ist positiv (verglichen zu weißer Lupine), das Verhältnis der essentiellen Aminosäuren ist gut. Die Konzentrationen der untersuchten antinutritiven Stoffe, besonders der Alkaloide, sind niedrig. Auf Grund der angeführten chemischen Untersuchungen ist diese Pflanze eine der wertvollsten Hülsenfrüchte; der Anbau und die Verwendung der Samen scheint zukunftsreich zu sein.
    Notes: Abstract Different chemical components were analysed in the seeds and in testa ofVicia faba. The seeds contain a relativ high crude protein (27,5%), a low crude fatt (3,36%) content; and the lignin concentration is low (2,65%). The testa of the seeds has a very high fibre concentration and is a significant Ca-source (1,86 g/kg). The higher macroelement concentrations in the seeds were measured from K, P and Mg. The main microelements (Fe, Mn, Cu, Zn) have significant higher concentrations in the seed than in the testa. The amino acid composition of seeds is positiv (compared to data of white lupine), the rate of essentiell amino acids is good. The concentrations of the examined antinutritiv organic constituents, especially of alkaloids, are low. On the basis of chemical analysis, the production and utilisation of seeds ofVicia faba is recommended.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01190501
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  • 5
    Electronic Resource
    Electronic Resource
    Trypsin inhibitor activity of basidiomycetous mushrooms (2000)
    Springer
    European food research and technology 211 (2000), S. 346-348 
    Details
    ISSN: 1438-2385
    Keywords: Key wordsCraterellus ; Gomphidius ; Higher fungi ; Hydnum ; Hygrophorus, Laccaria ; Trypsin inhibitors
    Source: Springer Online Journal Archives 1860-2000
    Topics: Process Engineering, Biotechnology, Nutrition Technology
    Notes: Laccaria and Hygrophorus species, Craterellus cornucopioides, Gomphidius glutinosus, Macrolepiota rhacodes and Hydnum repandum. The inhibiting activities found were higher than those of cereals but lower than those of some fabaceous plants.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002170000180
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  • 6
    Electronic Resource
    Electronic Resource
    Alarm pheromone perception in honey bees is decreased by smoke (Hymenoptera: Apidae) (1995)
    Springer
    Journal of insect behavior 8 (1995), S. 11-18 
    Details
    ISSN: 1572-8889
    Keywords: honey bee ; Apis mellifera ; alarm pheromone ; electroantennograph
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The application of smoke to honey bee(Apis mellifera) antennae reduced the subsequent electroantennograph response of the antennae to honey bee alarm pheromones, isopentyl acetate, and 2-heptanone. This effect was reversible, and the responsiveness of antennae gradually returned to that of controls within 10–20 min. A similar effect occurred with a floral odor, phenylacetaldehyde, suggesting that smoke interferes with olfaction generally, rather than specifically with honey bee alarm pheromones. A reduction in peripheral sensitivity appears to be one component of the mechanism by which smoke reduces nest defense behavior of honey bees.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01990966
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  • 7
    Electronic Resource
    Electronic Resource
    Spectroscopy of 200Hg after incomplete fusion reaction (1999)
    Springer
    The European physical journal 6 (1999), S. 141-147 
    Details
    ISSN: 1434-601X
    Keywords: PACS: 21.10.-k Properties of nuclei; nuclear energy levels – 23.20.Lv Gamma transitions and level energies – 23.20.En Angular distribution and correlation measurements – 25.70.Jj Fusion and fusion-fission reactions – 27.80.+w 190 ≤ A ≤ 219
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract: High–spin states in 200Hg have been investigated by in–beam γ–ray spectroscopy following the reaction 198Pt(9Be,α3n). The α–emission channel leading to 200Hg is strongly enhanced which may be explained by an incomplete fusion reaction with pre–equilibrium emission of the α particle. The level scheme is extended to higher spins and new band crossings are observed. The band structures are compared to the lighter Hg isotopes with even mass number.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s100500050328
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  • 8
    Electronic Resource
    Electronic Resource
    Lifetime of the two-phonon vibrational state in232Th (1995)
    Springer
    The European physical journal 351 (1995), S. 143-147 
    Details
    ISSN: 1434-601X
    Keywords: 21.10.Re ; 21.60.Ev ; 23.20.Lv ; 27.90. + b
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We report on a measurement of the lifetime of the 1414 keV state in232Th by the Doppler-shift recoil-distance method. This 4+ state shows all characteristics of a nearly-harmonic two-phononγ-vibrational excitation. The result for the B(E2) value obtained from the lifetime,τ=3.2 ± 0.7 ps, is in agreement with an earlier estimate of the collectivity from Coulomb-excitation yields and supports the interpretation of the 1414 keV state as a two-phononγ-vibrational excitation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01289524
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  • 9
    Electronic Resource
    Electronic Resource
    Mineralstoff- und Aminosäuregehalte des eßbaren, kultivierten Pilzes Shii-take (Lentinus edodes) (1995)
    Springer
    European food research and technology 201 (1995), S. 17-19 
    Details
    ISSN: 1438-2385
    Source: Springer Online Journal Archives 1860-2000
    Topics: Process Engineering, Biotechnology, Nutrition Technology
    Description / Table of Contents: Zusammenfassung Weltweit werden jährlich etwa 200000 t des Shii-take Pilzes (Lentinus edodes) produziert. Verschiedene positive, biologische Wirkungen sind bekannt (anticarcinogene, cholesterinsenkende Wirkungen und stimulierende Wirkungen auf das Immunsystem), aber die Mineralstoff- und Aminosäuregehalte des Pilzes sind bislang nur wenig untersucht. Die Mineralstoffgehalte sind im allgemeinen niedriger als die des Kulturchampignons (Agaricus bisporus) oder des Austernseitlings (Pleurotus ostreatus). Die größten Unterschiede liegen bei den Kalium-, Phosphor-,Calcium-, Kupfer-, Strontium-, Mangan- und Zinkgehalten vor. Die Gehalte sind in Hüten höher als in den Stielen. Der Gesamtaminosäuregehalt beträgt 15,24% in den Hüten und 11,35% in den Stielen, bez. auf Trokkenmasse, und beträgt somit etwa die Hälfte des Gehaltes von Kulturchampignons. Die Phe-, Gly, His-, Arg-, Ile- und Met-Gehalte sind relativ höher als die von Champignon-Sorten.
    Notes: Abstract World wide about 200000 tons of shii-take mushrooms (Lentinus edodes) are produced per year. Different positive biological effects are known (anticarcinogenic, anticholesterol, immunostimulating effects), but the mineral contents and amino acid composition of caps and stipes are still little investigated. The concentrations of minerals are in general lower than those in the cultivated white mushroom (Agaricus bisporus) and in the oyster mushroom (Pleurotus ostreatus). The greatest differences are found in the concentrations of potassium, phosphorus, calcium, copper, strontium, manganese and zinc. The cocentrations are higher in caps than in stipes. The total amino acid content is 15,24% in caps and 11,35% in stipes (dry matter) and thus in general half of the concentration of cultivated champignon. The amounts of Phe, Gly, His, Arg, Ile and Met are relative higher than inAgaricus fruit bodies.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01193193
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  • 10
    Electronic Resource
    Electronic Resource
    Bor-Gehalt in häufigen eßbaren Wildpilzarten Ungarns (1995)
    Springer
    European food research and technology 201 (1995), S. 524-527 
    Details
    ISSN: 1438-2385
    Source: Springer Online Journal Archives 1860-2000
    Topics: Process Engineering, Biotechnology, Nutrition Technology
    Notes: Abstract The boron contents of 68 edible common macrofungi of Hungary were analysed. The average boron content of the examples was 11,74 mg/kg dry mass, this is higher than the average value of green plants of Hungary (7,4 mg/kg dry mass). Although the highest boron contents were found in the examples from woods near Budapest, the differences between the various sites are not significant. It seems that the site has not an important effect on the boron content of mushrooms. Some taxonomical groups are examples of higher, others are examples of lower boron content. The highest concentration of boron (54,3 mg/kg dry mass) was found in the speciesMarasmius wynnei which indicates a bioconcentration of four to five fold to the average boron level. Significant bioaccumulation of analysed edible species was not established, but the poisoning mushroomMycena pura has a very great (401–607 mg/kg dry mass) boron concentration. This accumulation is observed to the first time.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01201576
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