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  • 1
    Electronic Resource
    Electronic Resource
    Motional freedom and polarity within water pools of different sizes. Spin label studies (1975)
    s.l. : American Chemical Society
    Journal of the American Chemical Society 97 (1975), S. 909-911 
    Details
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ja00837a047
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Generation and characterization of a bridged 1,8-naphthoquinodimethane (1976)
    s.l. : American Chemical Society
    Journal of the American Chemical Society 98 (1976), S. 2551-2562 
    Details
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ja00425a026
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Effect of fungicides on three vesicular-arbuscular mycorrhizal fungi associated with winter wheat (Triticum aestivum L.) (1989)
    Springer
    Biology and fertility of soils 7 (1989), S. 120-128 
    Details
    ISSN: 1432-0789
    Keywords: Vesicular-arbuscular mycorrhiza ; Fungicides ; Glomus spp. ; Spore germination ; Root infection ; Carbendazim ; Tridemorph ; Propiconazole ; Triticum aestivum L.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Geosciences , Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary We studied the effects of field application rates of three fungicides on spore germination and root infection in three species of Glomus. Bavistin (carbendazim) prevented germination of spores of G. monosporum and G. mosseae whereas Calixin (tridemorph) had no effect. Tilt Turbo (propiconazole) inhibited spore germination less than Bavistin. Spores of G. geosporum germinated in the presence of all three fungicides. Foliar applications of Bavistin alone and in a triple-spray programme significantly reduced infection of all three Glomus species in wheat roots grown in conditions of low P availability (2 mg P 1−1). Two fungicides with triazole derivatives, Sportak and Tilt Turbo, also decreased infection and the former significantly reduced spore production of all three Glomus species. Calixin-treated plants, however, showed increased infection levels, resulting in greater yields and greater foliar-P concentrations than control plants. Milgo (ethirimol) was not detrimental to the vesicular-arbuscular mycorrhizal (VAM) symbiosis when applied as a foliar spray.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00292569
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Effects of herbicides on three vesicular-arbuscular fungi associated with winter wheat (Riticum aestivum L.) (1989)
    Springer
    Biology and fertility of soils 7 (1989), S. 113-119 
    Details
    ISSN: 1432-0789
    Keywords: Vesicular-arbuscular mycorrhiza ; Herbicides ; Wheat ; Glomus spp. ; Spore germination ; Root infection ; Triticum aestivum L. ; Bifenox ; Mecoprop ; Difenzoquat methyl sulphate ; Chlortoluron
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Geosciences , Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary We studied the effects of field application rates of four herbicides (Avenge, Ceridor, Dicurane, and Harrier) on spore germination and infection of wheat roots by three species of Glomus grown under conditions of low P availability. Low concentrations of Ceridor (bifenox, mecoprop) and Harrier (mecoprop, ioxynil, clopyralid) inhibited spore germination while higher concentrations were stimulatory. Avenge (difenzoquat methyl sulphate) prevented spore germination completely, while Dicurane (chlortoluron) had no effect. The herbicide applications had no significant effect on the infection rates of any of the three fungi except Harrier on G. geosporum. The herbicide treatments did, however, affect plant growth and ear yields. Ceridor and Harrier increased ear yields, while Dicurane showed marked phytotoxic effects.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00292568
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  • 5
    Electronic Resource
    Electronic Resource
    Reply to comments of Truhlar and Chesnavich–Bowers (1985)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 82 (1985), S. 2169-2170 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.448358
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  • 6
    Electronic Resource
    Electronic Resource
    The value of the monoclonal antibody (cancer antigen 125) in serial monitoring of ovarian cancer: a comparison with circulating immune complexes (1985)
    Oxford, UK : Blackwell Publishing Ltd
    BJOG 92 (1985), S. 0 
    Details
    ISSN: 1471-0528
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Summary. The use of circulating immune complexes and a commercial monocolonal antibody to ovarian cancer (CA125 kit) in monitoring progress in patients with ovarian cancer has been assessed. While changes in immune complexes were apparent in some patients with active progression of disease, the marked change in values and linear trend make the use of CA125 a useful clinical marker.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1471-0528.1985.tb03003.x
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  • 7
    Electronic Resource
    Electronic Resource
    Phenology and seed production of variegated thistle, Silybum marianum (L.) Gaertn., in Australia in relation to mechanical and biological control (1989)
    Oxford, UK : Blackwell Publishing Ltd
    Weed research 29 (1989), S. 0 
    Details
    ISSN: 1365-3180
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Production of viable seeds occurred in immature capitula of Silybum marianum following simulated slashing and mowing. In the slashing treatment, capitula with 20 cm or less of stem attached produced viable seeds if cut off when at least half the florets were open, the proportion of viable seeds ranging from 0·3% in capitula at midanthesis to 12% in those at the end of anthesis. Following mowing, viable seeds were produced in full-sized buds which were close to anthesis and in capitula at any stage of anthesis at the time of plant cutting, the proportion increasing from 0·1% in capitula at the start of anthesis to 30% in those at the end. Within a capitulum, anthesis usually lasted five days in irrigated plants. Ripe seeds were released about 17 days later. Seed production averaged 190 seeds for the primary capitulum and 114 in others. In a flowering season starting in early November and lasting about two months, individual plants had the potential to produce an average of 55 capitula, representing an output of 6350 seeds per plant, of which 94% were viable. In view of the prolonged flowering season and the large seed output of S. marianum, it is argued that the restricted period of oviposition by the weevil Rhinocyllus conicus and the low density of larvae per capitulum might limit its impact as a biological control agent for this weed in Australia.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-3180.1989.tb00910.x
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  • 8
    Electronic Resource
    Electronic Resource
    The annual reproductive cycle of the female lesser spotted dogfish, Scyliorhinus canicula L., and its endocrine control (1979)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of fish biology 15 (1979), S. 0 
    Details
    ISSN: 1095-8649
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Various aspects of the reproductive physiology of the female lesser spotted dogfish, Scyliorhinus canicula L., demonstrate marked annual cycles. Pituitary ventral lobe gonadotrophin content and plasma oestradiol and testosterone levels rise through the autumn as the ovary recrudesces and the percentage of fish bearing eggs in the oviducts increases. The pituitary gonadotrophin and plasma sex steroid levels remain elevated throughout the winter but decrease during the spring, two months prior to a fall in both the gonadosomatic index (GSI) and the percentage of fish with eggs in their oviducts. The lowest gonadotrophin and sex steroid levels are found in early summer, again preceding the minimum GSI and rate of egg-laying by two or three months. Some of these cycles are pronounced, the pituitary gonadotrophin levels varying by more than 100-fold, and the oestradiol levels by more than 10-fold, throughout the year. It is concluded that the female dogfish has a very extended breeding season, though the peak frequency of egg-laying occurs in the winter and spring.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1095-8649.1979.tb03678.x
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  • 9
    Electronic Resource
    Electronic Resource
    The effects of water- and nitrogen-induced stresses on plant community structure in a semiarid grassland (1978)
    Springer
    Oecologia 36 (1978), S. 211-222 
    Details
    ISSN: 1432-1939
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary A replicated factorial experiment was designed to test the hypothesis that manipulating inputs of water and mineral nitrogen to a semiarid grassland would disrupt existing interactions resulting in alteration of the structure of the primary producer community. Alteration of community structure was measured as either changes in growing season average biomass of 6 functional groups of plants or their relative contribution to total biomass. Additions of water greatly increased total biomass and resulted in the replacement of one of the dominant functional groups by a subordinate group. The water plus nitrogen treatment resulted in large biomass increases in two of the dominant functional groups, elimination of succulents as an important component of community structure, and establishment of several introduced weedy species. Continuation of the experiment will likely result in complete dominance of the water plus nitrogen treatment by these introduced species. Despite the large changes in community structure observed as a result of water- and nitrogen-induced stresses we conclude that the shortgrass prairie in northcentral Colorado is asymptotically stable with respect to these influences.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00349810
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  • 10
    Electronic Resource
    Electronic Resource
    Partitioning of carbon an SO2-sulfur in a native grassland (1979)
    Springer
    Oecologia 42 (1979), S. 229-240 
    Details
    ISSN: 1432-1939
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary The seasonal assimilation and within-plant partitioning of 14CO2-carbon and 35SO2-sulfur in field plots of mixed-grass prairie was investigated, as was the dry deposition of 35SO2 onto surfaces of dead leaves, litter, and soil, and possible effects of continuous low-level SO2 fumigation on these processes. The proportion of total net-assimilated carbon found below-ground was 45% in May, 51% in July, and 17% in September. As the season progressed, greater proportions of assimilate were partitioned to 5–20 cm depths and less to the 0–5 cm depth. Rhizomes and crowns received greater proportions in late season. Significant fractions of total 34SO2-deposited sulfur were recovered on dead leaf surfaces as well as litter and soil, suggesting estimates of SO2 removal based on stomatal resistance alone are inadequate. Only 4% to 7% of total deposited sulfur was translocated belowground, with most going to 0–5 cm roots. In July much greater proportions of the total translocated SO2-sulfur were found in deeper depths than in September. On SO2-fumigated plots roots had lower total sulfur concentrations than controls. Furthermore, while on control plots total sulfur in roots at 5–20 cm increased from May to July and decreased from July to September, on fumigated plots there was a decrease followed by an increase suggesting that SO2 uptake by shoots interferes with the normal pattern of root sulfur uptake and redistribution within the plant. Continuous SO2 fumigation also seemed to stimulate root growth in July, possibly through a stimulation of photosynthesis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00344859
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