ZIB

Treffer pro Seite

Treffer 1 - 2 | 2 Treffer

Sortierung

Digitale Medien

Allelochemicals produced during glucosinolate degradation in soil (1991)

Brown, Paul D. ; Morra, Matthew J. ; McCaffrey, Joseph P. ; [weitere]

Springer

Journal of chemical ecology 17 (1991), S. 2021-2034

zur Merkliste hinzufügen auf der Merkliste

Details

ISSN: 1573-1561

Schlagwort(e): Rapeseed ; Brassica spp. ; isothiocyanate ; thiocyanate ; defatted ; seed meal ; allelochemicals ; Limonius infuscatus ; wireworms ; Coleoptera ; Elateridae

Quelle: Springer Online Journal Archives 1860-2000

Thema: Biologie , Chemie und Pharmazie

Notizen: Abstract A variety of plant pests are suppressed by the incorporation of cruciferous plant material into soil. Although this effect is attributed to decomposition of glucosinolates into toxic products, little is known concerning glucosinolate degradation in the soil environment. Arenas (30 × 18 × 8 cm) that contained soil amended with 30 g defatted winter rapeseed meal (Brassica napus L.)/kg soil on one half and unamended soil on the other were constructed. Isothiocyanate concentrations in the soil were measured using infrared analysis of CC14 extracts, and ionic thiocyanate (SCN−) using ion chromatography on aqueous extracts. Quantities were monitored during a 100-hr time period in conjunction with a wireworm bioassay. Isothiocyanate production reached a maximum of 301 nmol/g soil at 2 hr, but decreased by 90% within 24 hr. Production of SCN− reached a maximum of 180 nmol/g soil at 8 hr but persisted longer than isothiocyanate. Separate late instar wire-worms (Limonius infuscatus Mots.) were repelled by the presence of rapeseed meal in less than 24 hr even though the meal was shown in separate experiments not to be toxic. We propose that rapidly produced isothiocyanates are responsible for this repellency, but other products such as SCN− may play a role.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF00992585

Permalink

Bibliothek	Standort	Signatur	Band/Heft/Jahr	Verfügbarkeit

Andere fanden auch interessant ...

Artikel (Nationallizenzen)

Volltext

Digitale Medien

Technology in Medicine: Ontology, Epistemology, Ethics and Social Philosophy at the Crossroads (2000)

Vos, Rein ; Willems, Dick L.

Springer

Theoretical medicine and bioethics 21 (2000), S. 1-7

zur Merkliste hinzufügen auf der Merkliste

Details

ISSN: 1573-1200

Schlagwort(e): Philosophy of technology ; technology ; medical practice ; ontology ; disease concept ; normality ; autonomy ; risk and trust ; health technology assessment

Quelle: Springer Online Journal Archives 1860-2000

Thema: Medizin , Philosophie

Notizen: Abstract In reference to the different approaches in philosophy(of medicine) of the nature of (medical) technology,this article introduces the topic of this specialissue of Theoretical Medicine and Bioethics, that is,the way the different forms of medical technologyfunction in everyday medical practice. The authorselaborate on the active role technology plays inshaping our views on disease, illness, and the body,whence in shaping our world.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1023/A:1009903321229

Permalink

Bibliothek	Standort	Signatur	Band/Heft/Jahr	Verfügbarkeit

Andere fanden auch interessant ...

Artikel (Nationallizenzen)

Volltext

Treffer 1 - 2 | 2 Treffer