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  • 1990-1994  (41)
  • 1985-1989  (63)
  • 1
    Electronic Resource
    Electronic Resource
    A novel copper(II) complex containing the ligand 1,2-bis(2,2'-bipyridyl-6-yl)ethane: structural, magnetic, redox, and spectral properties (1990)
    s.l. : American Chemical Society
    Inorganic chemistry 29 (1990), S. 2863-2868 
    Details
    ISSN: 1520-510X
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ic00340a028
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Molar excess volumes of ternary mixtures of nonelectrolytes at 308.15 K (1985)
    s.l. : American Chemical Society
    Journal of chemical & engineering data 30 (1985), S. 477-479 
    Details
    ISSN: 1520-5134
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/je00042a033
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Molar excess volumes and molar excess enthalpies of some ternary mixtures of nonelectrolytes (1988)
    s.l. : American Chemical Society
    Journal of chemical & engineering data 33 (1988), S. 448-450 
    Details
    ISSN: 1520-5134
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/je00054a017
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Quinones and Other Constituents of Markhamia platycalyx and Bignonia unguiscati (1985)
    s.l. : American Chemical Society
    Journal of natural products 48 (1985), S. 145-145 
    Details
    ISSN: 1520-6025
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/np50037a031
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Effect of seasonal changes on cyanobacterial production and nitrogen-yield (1988)
    Springer
    Microbial ecology 16 (1988), S. 149-154 
    Details
    ISSN: 1432-184X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract A mixed culture of cyanobacteria (BGA) containingAulosira sp.,Aphanothece sp., andGloeotrichia sp. were grown throughout the year to assess the influence of seasonal variables on their biomass production and nitrogen (N)-yield under field conditions. The seasonal variables considered in this study, i.e., water temperature (maximum, minimum), solar radiation, sunshine hours, and rainfall, fluctuated widely. Attempts were made to establish a relationship between seasonal changes as independent variables and BGA productivity and N-yield as dependent variables. The analysis indicated that solar radiation was the prime factor. Estimates of BGA biomass production varied from 3.3 to 366.5 kg (dry wt)/ha/month, and N-yield ranged from 0.1 to 11.8 kg N/ha/month. The nitrogen accumulated during the study period was 71.2 kg N/ha. The variations explained by seasonal changes were 52.3 and 50.3% for biomass production and N-yield of BGA, respectively.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02018910
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  • 6
    Electronic Resource
    Electronic Resource
    Nitrogen fixation and balance studies of rice soil (1987)
    Springer
    Biology and fertility of soils 4 (1987), S. 15-19 
    Details
    ISSN: 1432-0789
    Keywords: Nitrogen fixation ; N-balance studies ; Azolla ; Blue-green algae ; Chemical N fertilization ; Rice
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Geosciences , Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary A nitrogen balance study conducted in ceramic pots under net house conditions for four seasons showed that flooded rice soil leaves a positive nitrogen balance (N increase) in soil after rice cropping in both fertilized and unfertilized soil. Recovery of nitrogen from rice soil was more than its input in unfertilized soil, but it was reverse in fertilized soil. Incorporation of Azolla or BGA twice as basal and 20 days after transplanting (DAT) alone or in combination showed higher nitrogen balance and N2-fixation (N gain) in soil than in that where it was applied once either as basal or 20 DAT. Planted soil showed more N2-fixation than that of fallow rice, and flooded soil fixed more nitrogen in comparison to non-flooded soil in light but less in dark. Soil exposed to light fixed more nitrogen than that of unexposed soil in both flooded and non-flooded conditions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00280345
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  • 7
    Electronic Resource
    Electronic Resource
    Effect of phosphorus fertilization on blue-green algal inoculum production and nitrogen yield under field conditions (1988)
    Springer
    Biology and fertility of soils 5 (1988), S. 338-343 
    Details
    ISSN: 1432-0789
    Keywords: Blue-green algae (BGA) ; Phosphorus fertilization ; Inoculum production ; Nitrogen yield ; Cyanobacteria ; Aulosira spp. ; Aphanothece spp. ; Gloeotrichia spp.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Geosciences , Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Field experiments were conducted to assess the effects of the application of P on growth and N yield of inoculated and indigenous blue-green algae (BGA). Addition of 17.4 kg P ha−1 in split applications led to the highest BGA biomass and N yield, 162 kg dry weight ha−1 and 6 kg N ha−1 per 15 days, respectively. When inoculum of Aulosira spp., Aphanothece spp., Gloeotrichia spp. were compared separately, Gloeotrichia spp. grew faster but Aulosira spp. fixed more N. The growth rate and N yield of Aulosira spp. decreased with high P applications, although growth continued until the application of 34.8 kg P ha−1. The effects of P on inoculum production by local species compared with those collected from other states showed the superiority of the local culture. Applications of P also enhanced the growth and N yield of indigenous BGA, with Wollea spp. showing the best results.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00262143
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    Paper (German National Licenses)
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  • 8
    Electronic Resource
    Electronic Resource
    Impact of γ-hexachlorocyclohexane exposure on plasma gonadotropin levels and in vitro stimulation of gonadal steroid production by carp hypophyseal homogenate in Carassius auratus (1994)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of fish biology 44 (1994), S. 0 
    Details
    ISSN: 1095-8649
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Male and female Carassius auratus were exposed to safe (SC; 0.01 ppm) and sublethal (SL; 0·1 ppm) concentrations of an organochlorine pesticide γ-hexachlorocyclohexane (γ-HCH) for 4 weeks during the pre-spawning phase (June) of the annual reproductive cycle. Gonadosomatic index and gonadotropin levels were significantly lower after exposure to both γ-HCH concentrations than in control fish. After 4 weeks exposure, gonadal tissue from control, SC and SL exposed fish was incubated with carp hypophyseal homogenate (chh). The chh stimulated production of testosterone, 17,20β-dihydroxy-4-pregnen-3-one (17,20βP), 11-deoxycortisol, and 11-ketotesterone (11-KT) was estimated in the unconjugated (free) and conjugated (glucuronide) fractions by radioimmunoassay. In both sexes, testosterone production was greatly decreased in γ-HCH exposed fish compared to controls. 17,20βP production was low in all fish and was unaffected by γ-HCH. Free 11-deoxycortisol production by testicular fragments was higher in SL and SC compared with controls, while conjugated 11-deoxycortisol was increased only higher in the SL. In ovarian fragments from exposed fish, free 11-deoxycortisol decreased while glucuronide concentrations increased compared with controls. 11-KT production was significantly decreased in testicular fragments of exposed fish. The results indicate that γ-HCH inhibits gonadal recrudescence by decreasing both gonadotropin secretion and its potential for stimulation of steroidogenesis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1095-8649.1994.tb01198.x
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  • 9
    Electronic Resource
    Electronic Resource
    Seasonal correlative changes between sex steroids and lipid levels in the freshwater female catfish, Heteropneustes fossilis (Bloch) (1990)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of fish biology 37 (1990), S. 0 
    Details
    ISSN: 1095-8649
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Circannual variation in plasma levels of testosterone (T), oestradiol-17β(E2) and 17α-hydroxy-progesterone (17α-OHPg) were measured in female, Heteropneustes fossilis. T and E2 levels increased during the preparatory phase, reached their peak in the early prespawning phase and fell during the late prespawning phase to reach their lowest levels post-spawning. 17a-OHPg was detected from the late preparatory to the late spawning phase showing its peak during the early spawning phase. The levels of free fatty acids (FFA), monoglycerides (MG), diglycerides (DG), triglycerides (TG), phospholipids (PL), free cholesterol (CF)and esterified cholesterol (CE) were estimated in liver, plasma and ovaries. The preparatory phase showed hepatic lipogenic activity while during the prespawning phase TG lipolysis was increased by FFA. Ovarian CF was depleted by enhancing plasma E, levels during the prespawning phase. The gonadosomatic index reached its peak during spawning.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1095-8649.1990.tb02542.x
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  • 10
    Electronic Resource
    Electronic Resource
    Alfentanil in daycase anaesthesia (1993)
    Oxford, UK : Blackwell Publishing Ltd
    Anaesthesia 48 (1993), S. 0 
    Details
    ISSN: 1365-2044
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: The effect of the addition of a single dose of 7 μg.kg−1 of alfentanil to a propofol/enflurane anaesthetic on the quality of anaesthesia and recovery was assessed. A total of 53 ASA grade 1 or 2 patients who underwent daycase dental surgery were allocated randomly to receive either alfentanil or saline. The study was blinded so that neither the anaesthetist nor the assessor was aware of which solution had been given. Patients in the alfentanil group took signficantly longer to recommence spontaneous ventilation (p = 0.035). Both techniques provided good quality of anaesthesia. Postoperative morbidity was common (45% of patients), but there was no difference between the groups. The rate of recovery was similar in the two groups and no patient required hospital admission after the final assessment at 3 h. Drowsiness was only mild to moderate in both groups at 24 h. A single dose of alfentanil can be administered safely as part of a daycase anaesthetic without increasing morbidity, although there appears to be little advantage in doing so.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2044.1993.tb07065.x
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