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  • 1
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Biochemistry 3 (1964), S. 2019-2024 
    ISSN: 1520-4995
    Source: ACS Legacy Archives
    Topics: Biology , Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Macromolecules 5 (1972), S. 674-676 
    ISSN: 1520-5835
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Macromolecules 6 (1973), S. 163-168 
    ISSN: 1520-5835
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Environmental science & technology 9 (1975), S. 234-237 
    ISSN: 1520-5851
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 198 (1963), S. 302-302 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] We have recently carried out a series of experiments on the electrocardiography of 10 elasmobranch fishes (3 stingrays, Dasyatis spp.; 6 groy sharks, Carcharinus obscurus; and 1 hound shark, Mustelus manazo). The length-range of those fishes was 50-100 cm. In these investigations, an exploring ...
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 168 (1951), S. 952-953 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] During the course of investigations started in April 1950, and carried out by the Union of South Africa Fisheries Research Division's R.S. Africana II, the pilchard was found to have spawned off the west coast of South Africa over a large area. This area lies between 32 S. and 34 25' S., that is, ...
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Fiscal studies 4 (1983), S. 0 
    ISSN: 1475-5890
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Economics
    Type of Medium: Electronic Resource
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  • 8
    ISSN: 1365-3180
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: In June 1989, a survey was made of 733 fields of winter cereals, 627 in England and Wales and 106 in Fife and the Lothian regions of Scotland. The occurrence of Bromus species was noted in three areas of each field: the uncropped field margin, the cropped headland and the field centre. Three arbitrarily defined infestation levels were recorded: severe, light and intermediate.The most common species recorded was Bromus sterilis L., which accounted for almost 87% of all sightings. Most of the other occurrences were almost equally distributed between B. hordeaceus L., and B. commutatus Schrad. Two other species were found, on one field each: B. diandrus Roth and B. × pseudothominii Hard. Surveyors were briefed to recognize B. secalinus L, but none was reported.The brome grasses were widespread throughout the surveyed regions. They were most common in the Lothians (81 % of surveyed fields) and in the South East (60%) and the South West (52%) of England and least common in the English West Midlands, Fife and Wales (17%, 15% and 4% of surveyed fields). Distribution was biased towards the uncropped margins and field headlands. In England and Wales, there were 146 fields where Bromus species occurred in the field margins only, 179 in margins and headlands only and 63 with infestations in all three areas. In contrast, there were only 26 fields where they were restricted to the cropped areas. A similar pattern occurred in Scotland.The correlations between incidence of the Bromus species and management practices were much weaker than had been anticipated. The standard advice for control is to plough rather than use non-inversion tillage systems, to delay sowing and to avoid long runs of winter cereals. The conclusion of this survey is that, although these practices may be reducing or preventing increase of these weeds, they are not effective at eliminating infestations. Incidence des espèces Bromus comme mauvaises herbes des céréales d'hiver en Angleterre, au Pays de Galles et dans certaines parties de I'Écosse En juin 1989 une enquête a été réalisée dans 733 champs de céréales d'hiver, 627 en Angleterre et au Pays de Galles, et 106 dans les régions d'Écosse Fife et Lothian. La présence d'espèces Bromus a été notée sur trois zones de chaque champ: la bordure non-cultivée ('field margin'), la bordure cultivée ('headland') et le centre du champ. Trois niveaux d'infestation arbitraires ont eAté notés: sévère, léger et moyen. Les espèces les plus communément rencontrées étaient Bromus sterilis L. qui représentait presque 87 % de l'ensemble des présences. Dans la plupart des autres relevés, B. hordeaceus L. et B. commutatus Schrad se distribuaient presque également. Deuxautres espèces ont été trouvées, chacune dans un champ: B. diandrus Roth et B. × pseudothominii Hard. On avait appris aux enquêteurs à reconnaître B. secalinus L. mais cette espèce n'a pas été rapportée.Les bromes se rencontraient sur tout le territoire des régions étudiées. Elles étaient les plus communes dans les Lothians (81 % des champs étudiés) ainsi que dans le Sud Est (60 %) et dans le Sud Ouest (52 %) de l'Angleterre; les moins communes dans les West Midlands, en Fife et au Pays de Galles (17, 15 et 4 % des champs examinés). Leur distribution était biaisée en faveur des bordures non-cultivées et des bordures cultivées. En Angleterre et au Pays de Galles, dans 146 champs les bromes ne se rencontraient que dans les bordures non-cultivées, dans 179 ils ne se rencontraient que dans les bordures cultivées et non-cultivées, et dans 63 ils se rencontraient dans les trois secteurs du champ. Inversement, il n'y avait que 26 champs oü ils ne se trouvaient que dans la partie cultivée. Une répartition semblable s'observait en Écosse. Les corrélations entre la présence de bromes et la conduite des cultures étaient plus faibles qu'anticipé. Le conseil habituel est de labourer plutôt que de pratiquer des façons culturales sans renversement de la terre, de retarder le semis et d'éviter les longues successions de céréales d'hiver. La conclusion de cette étude est que, bien que ces pratiques peuvent réduire ou prévenir la prolifération de ces mauvaises herbes, elles ne sont pas efficaces pour les éliminer en cas d'infestations. Verbreitung von Bromus spp. in Wintergetreide in England, Wales und Teilen SchottlandsIm Juni 1989 wurde auf 733 Wintergetreidefeldern, 627 in England und Wales und 106 in Fife und in den Lothian-Gebieten in Schottland, das Auftreten von Bromus spp. aufgenommen, getrennt nach dem nichtkultivierten Feldrand, dem Vorgewende und dem Feldinnern. Die Befallsstärke wurde nach schwer, mittel und leicht unterschieden. Die häufigste Trespen-Art war Bromus sterilis L. mit fast 87 % aller Beobachtungen. Die übrigen Vorkommen waren zu fast gleichen Teilen Bromus hordeaceus L. und Bromus commutatus Schrad. Aufje l Feld wurde Bromus diandrus Roth und Bromus × pseudothominii Hard, gefunden. Trotz intensiver Suche wurde kein Bromus secalinus L. festgestellt. Die Trespen traten im Beobachtungsgebiet verb-reitet auf, am häufigsten in den Lothians (81 % der untersuchten Felder) und im Südosten (60 %) und Südwesten (52 %) Englands, am wenigsten in dem englischen West Midland, in Fife und Wales (17, 15 bzw. 4 %). Die Verteilung konzentrierte sich in England und Wales auf 146 Feldern auf die kulturfreien Feldränder, in 179 Fällen auf die Feldränder sowie die Vorgewende, und auf 63 Feldern waren alle 3 Bereiche mit Trespen verunkrautet; nur auf 26 Feldern waren die Arten auf das Feldinnere beschränkt. In Schottland wurde eine ähnliche Verteilung beobachtet. Zwischen der Bewirtschaftung und dem Auftreten der Bromus spp. bestand eine weit schwächere Korrelation als erwartet. Die generelle Bekämpfungsempfehlung ist Pflügen statt nichtwendender Bodenbearbeitung, spätes Säen und Vermeidung von Fruchtfolgen mit hohem Wintergetreideanteil. Aus den Untersuchungsergebnissen folgt, daß diese Bekämp-fungsmaßnahmen Trespen wohl zurückdrängen oder ihre Zunahme verhindern, aber nicht eliminieren können.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Colloid & polymer science 256 (1978), S. 408-408 
    ISSN: 1435-1536
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
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  • 10
    ISSN: 1573-7217
    Keywords: epidermal growth factor ; EGF receptor ; quinazolines ; IGF-I ; TGFα ; tyrosine kinase inhibitor
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Since the mitogenic action of EGF is mediated by ligand-induced autophosphorylation of the EGF receptor (EGFR), and EGFR is commonly overexpressed in solid human tumours, inhibitors of receptor tyrosine kinase activity (RTK) could prove to be effective antitumour agents. Screening of a compound library using an EGF-RTK enzyme prepared from human tumour derived A431 cells identified a series of potent (IC50〈1µM) enzyme inhibitors. These inhibitors are quinazolines bearing a variety of substituted anilines at the 4-position. The most potent 4-anilinoquinazolines (IC50 ≅ 20nM) have small non-polar meta substituents on the aniline ring, and are competitive with ATP and non-competitive with substrate. The growth inhibitory activity of these agents was assessed in vitro using KB cells (human oral squamous tumour) grown in the absence or presence of EGF. A selected compound, 4-(3-chloroanilino)quinazoline (CAQ), inhibited EGF-stimulated growth in a concentration dependent manner and complete blockade was observed at concentrations (1–10 µM) which had no effect on basal growth. Selectivity of growth inhibition by CAQ was further exemplified in IGF1-stimulated KB cells where no effect was detected at concentrations which completely blocked EGF-stimulated growth. Similarly, CAQ blocked TGFα-stimulated growth in MCF-7 human breast cancer cells without affecting insulin-stimulated growth. These studies define a novel class of EGF-RTK inhibitors which are also potent and selective inhibitors of EGF-stimulated human tumour cell growthin vitro.
    Type of Medium: Electronic Resource
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