Library

feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    Electronic Resource
    Electronic Resource
    Oxford UK : Blackwell Science Ltd
    Alimentary pharmacology & therapeutics 15 (2001), S. 0 
    ISSN: 1365-2036
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 2
    ISSN: 0013-4686
    Keywords: adsorption ; camphorquinone reduction ; kinetics of adsorption ; reduction mechanism ; voltammetric behaviour
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 3
    Electronic Resource
    Electronic Resource
    Springer
    BioControl 23 (1978), S. 371-378 
    ISSN: 1573-8248
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Description / Table of Contents: Résumé On a étudié l'effet de 11 fongicides sur les différentés stades de développement de l'acarien prédateurPhytoseiulus persimilis A.-H. Une attention particulière a été portée aux effets des produits sur la survie des femelles adultes et des formes jeunes, sur l'éclosion des œufs et sur la fécondité des femelles, en réalisant les essais en chambres climatisées à 25°±1°C, 80% H.R. et une photopériode de 16 heures par jour. Les fongicides ont été expérimentés à 3 concentrations: celle préconisée pour l'emploi, la dose double et la dose moitié. D'après les effets de leurs résidus sur les femelles et sur les jeunes venant de naître on peut classer les fongicides étudiés en 3 catégories: a) ceux ayant un très faible effet (Pallinal M, Nimrod, Plondrel, Asepta Funginex, Morestan, Fungaflor et Karathane), b) ceux ayant peu d'effet sur les femelles aux concentrations choisies et ayant un effet modéré sur les jeunes (SM55, Goldion et Malonoben), c) ceux provoquant 100% de mortalité sur les femelles (Curamil). Si l'on considère les effets de l'application directe des produits sur les œufs et les jeunes on peut distinguer 2 catégories: l'une avec un très faible effet ou sans action (Fungaflor, Asepta Funginex, Plondrel, Morestan, Pallinal M et Nimrod), l'autre avec un effet très important (Malonoben, Goldion, SM55, Karathane et Curamil).
    Notes: Abstract The effect of 11 fungicides on different developmental stages of the predator mitePhytoseiulus persimilis A.-H. was investigated. Special attention was paid to the effect that these compounds may have on the survival of adult females and juveniles, on the hatching of eggs and on the fecundity of the females. The experiments were conducted in the laboratory in climatic chambers at a temperature of 25°C±1°C, a relative humidity of at least 80% and a photoperiod of 16 h light per day. The fungicides were tested at 3 different concentrations: the concentration advised by the manufacturer and the double and half of that concentration. It appeared possible to group the fungicides in 3 classes, based on their effect in residue tests on females and newly hatched juveniles: a) with very low effect (Pallinal M, Nimrod, Plondrel, Asepta Funginex, Morestan, Fungaflor and Karathane); b) with low effect on females at the advised concentration and with moderate effect on the juveniles (SM55, Goldion, and Malonoben) and c) with high effect on females (100% mortality) in the advised concentration (Curamil). Only 2 classes could be recognized, when the effect of the direct application of fungicides on eggs and juveniles were taken into account: one class without or with very little effect (Fungaflor, Asepta Funginex, Plondrel, Morestan, Pallinal M and Nimrod) and the other one with a very high effect (Malonoben, Goldion, SM55, Karathane and Curamil).
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 4
    ISSN: 1573-8248
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Description / Table of Contents: Résumé Les effets toxiques de 10 pesticides sur 3 espèces de typhlodromes,Typhlodromus pyri Scheuten,Amblyseius potentillae Garman etA. bibens Blommers ont été examinés afin de déterminer si on peut employer ou nonA. bibens à la place des 2 autres espèces en tant qu'espèce test pour la mesure des effets nocifs des pesticides. t. pyri etA. potentillae sont d'importants prédateurs d'acariens phytophages en vergers. Ces espèces peuvent être élevées sur l'acarien commun,Tetranychus urticae Koch, mais présentent des réactions de répulsion à la soie de ce tetranyque. Placés sur des feuilles de haricot plantées dans du coton humide avecT. pyri comme proie, ces typhlodromes ont tendance à quitter les feuilles, surtout si elles ont été traitées par des pesticides.A. bibens, par contre, demeure sur les feuilles en présence de la proie et semble attiré par le tissage de l'acarien. Ce fait rend intéressantA. bibens. Dans ce travail les 3 espèces ont été étudiées comparativement dans des cellules fermées, afin de montrer si elles font preuve de différences dans leur sensibilité intrinsèque aux pesticides, d'après la mortalité des adultes, la reproduction et la mortalité des œufs et des jeunes. On a trouvé queA. bibens peut très bien remplacer les autres typhlodromes comme espèce-test.
    Notes: Abstract Toxicological responses to 10 different pesticides were determined for 3 species of typhlodromid mites,Typhlodromus pyri Scheuten,Amblyseius potentillae Garman, andA. bibens Blommers, in order to investigate whether or notA. bibens might be used as a substitute for the 2 other species as a testing object for measuring adverse effects of pesticides. T. pyri andA. potentillae are important predators in orchards on phytophagous mites. These species can be reared on the common spider mite,Tetranychus urticae Koch, but they seem averse to the webbing of the spider mite. When placed on detached bean leaves on moist cotton wool withT. urticae present as prey, these typhlodromids tend to run off the leaves, especially when in addition such leaves have been treated with pesticides.A. bibens on the other hand will stay on the leaves when prey is present; it seems to be attracted by the webbing of the spider mite. This makesA. bibens an attractive testing object. In the present study the 3 species mentioned were tested comparatively in closed cells to see whether or not there might be differences in intrinsic susceptibility to pesticides. Mortality of adults, the effect on reproduction, and the mortality of eggs and juveniles were determined. It was found thatA. bibens can reasonably well replace other typhlodromids as a testing objeot for obtaining information on adverse effects of pesticides in orchards.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 5
    ISSN: 1573-8248
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Description / Table of Contents: Résumé Une méthode pour étudier les actions secondaires des pesticides sur l'acarien prédateurAmblyseius potentillae Garman en laboratoire est présentée. La méthode est fondée sur des règles du groupe du travail de l'OILB/SROP «Pesticides et arthropods utiles». Les actions secondaires de 20 pesticides commerciaux (10 insecticides/acaricides, 6 fongicides, 4 herbicides) sur l'acarien prédateur ont été étudiées en contribution à un programme commun d'essais de pesticides par ce groupe de travail.
    Notes: Abstract A method is described for testing adverse effects of pesticides on the predacious miteAmblyseius potentillae Garman in the laboratory. It complies with the terms of the W.P.R.S./I.O.B.C. Working Group “Pesticides and Beneficial Arthropods” with respect to such methods. Twenty commercial pesticides were tested on the predator as part of a joint pesticide test programme of the Working Group.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 6
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The phytoseiid mite Amblyseius potentillae is a predator of spider mites in apple orchards in the Netherlands, but in the laboratory it may be successfully reared on a vegetarian diet of pollen. No differences in growth and reproduction were observed between mites fed on spider mite prey and mites ...
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 7
    Electronic Resource
    Electronic Resource
    Springer
    De economist 130 (1982), S. 38-70 
    ISSN: 1572-9982
    Source: Springer Online Journal Archives 1860-2000
    Topics: Economics
    Notes: Summary An attempt has been made to estimate a putty-clay vintage model for the Netherlands in order to test the assumption, usually made in the Dutch vintage model discussion, of complementarity ex ante. The estimation led to the following conclusions: an elasticity of substitution of about 0.32, a planning period of 13 years and apart from the 1950s the existence of embodied labour-augmenting technical progress only. The model outcomes lead to the conclusion of capital shortage being the ruling phenomenon in the postwar period with only some short periods in the 1950s and the late-1960s of capital abundance. Since the late-1970s employment growth is not only depressed by too slow a growth of capacity demand for labour but also by the increasing underutilization of productive capacity.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Entomologia experimentalis et applicata 9 (1966), S. 205-208 
    ISSN: 1570-7458
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Description / Table of Contents: Zusammenfassung In einer Population von Tetranychus pacificus wurde als Ergebnis spontaner Mutation ein albinotisches Männchen entdeckt. Es wird erwiesen dass dieser Albinismus rezessiv und monogenetisch beding ist. Ein mütterlicher Effekt war nachzuweisen. Der Albinismus ist eine geeignete genetische Markierung für alle Entwicklungsstadien bei dieser Spinnmilben-Art.
    Notes: Abstract An albino male was discovered in a population of Tetranychus pacificus, as a result of spontaneous mutation. It appeared that this albinism was recessive and under monogenic control. A maternal effect was demonstrated. The albinism is a suitable marker for all stages of development in this mite species.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Entomologia experimentalis et applicata 9 (1966), S. 402-403 
    ISSN: 1570-7458
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 10
    Electronic Resource
    Electronic Resource
    Springer
    De economist 133 (1985), S. 352-410 
    ISSN: 1572-9982
    Source: Springer Online Journal Archives 1860-2000
    Topics: Economics
    Notes: Summary In this article a simple multisector model for the Netherlands is presented with six sectors of production. Estimation and simulation results are based on input-output data for the period 1950–1968. Simple log-linear equations (containing both relative price factors and scale factors) are used to describe the demand for (intermediary and primary) factors of production and the demand for final output (including private investment). Sectoral product prices and wage rates are determined within the model. This applies to the generation of disposable income of households as well. Using this simple multisector model, actual economic developments during the 1955–1968 period can be simulated in a reasonably satisfactory way.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...