Amel ben hamouda (30 Ergebnisse)

PAP. Zustand: New. New Book. Shipped from UK. Established seller since 2000.

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PAP. Zustand: New. New Book. Shipped from UK. Established seller since 2000.

Paperback. Zustand: Brand New. 88 pages. French language. 8.66x5.91x0.20 inches. In Stock.

PAP. Zustand: New. New Book. Shipped from UK. Established seller since 2000.

PAP. Zustand: New. New Book. Shipped from UK. Established seller since 2000.

PAP. Zustand: New. New Book. Shipped from UK. Established seller since 2000.

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PAP. Zustand: New. New Book. Shipped from UK. Established seller since 2000.

PAP. Zustand: New. New Book. Shipped from UK. Established seller since 2000.

PAP. Zustand: New. New Book. Shipped from UK. Established seller since 2000.

Paperback. Zustand: Brand New. 88 pages. French language. 8.66x5.91x0.20 inches. In Stock.

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Paperback. Zustand: Brand New. 80 pages. French language. 8.66x5.91x0.19 inches. In Stock.

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Taschenbuch. Zustand: Neu. nach der Bestellung gedruckt Neuware - Printed after ordering - A wide variety of essential oils are known for their insecticidal and insect repellent properties. In most cases, this activity is due to the presence of active constituents, mainly monoterpenes, sesquiterpenes, and alcohols. In this context, the aim of this study is to evaluate the insecticidal activity of certain essential oil components belonging to two different chemical groups, namely a monoterpene (limonene) and three cyclic aromatic alcohols (eugenol, iso-eugenol, and carvacrol) and their combinations on the stored product pest Tribolium castaneum (Herbst). The toxic and repellent effects of the different components are evaluated in the laboratory through fumigation and repellency tests. The study of co-repellency and co-toxicity between the different components shows the presence of three effects: synergism, indifference, and antagonism. This was confirmed by principal component analysis. Obviously, the chemical structure and interactions between the components of essential oils influence their biological activities. …

Taschenbuch. Zustand: Neu. nach der Bestellung gedruckt Neuware - Printed after ordering - Une très grande variété des huiles essentielles sont connues par leurs propriétés insecticides et insectifuges .Dans la plupart des cas, cette activité est due à la présence de constituants actifs représentés principalement par des monoterpènes, sesquiterpènes et des alcools. Dans ce cadre, cette étude a pour objectif l'évaluation de l'activité insecticide de certains composants d'huiles essentielles qui appartiennent à deux groupes chimiques différents à savoir un monoterpène (le limonène) et trois alcools aromatiques cycliques (l'eugénol, l'iso-eugénol et le carvacrol) ainsi que leurs combinaisons sur le ravageur des denrées stockées Tribolium castaneum (Herbst). Les effets toxiques et répulsifs des différents composants sont évalués au laboratoire par des tests de fumigation et de répulsivité. L'étude de la co-répulsivité et la co-toxicité entre les différents composants montre la présence de trois effets : le synergisme, l'indifférence et l'antagonisme. Ceci a été confirmé par l'analyse en composantes principales. Bien évidement, la structure chimique et les interactions entre les composants des huiles essentielles influencent leurs activités biologiques.…

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Taschenbuch. Zustand: Neu. nach der Bestellung gedruckt Neuware - Printed after ordering - Una grande varietà di oli essenziali è nota per le sue proprietà insetticide e repellenti. Nella maggior parte dei casi, questa attività è dovuta alla presenza di costituenti attivi rappresentati principalmente da monoterpeni, sesquiterpeni e alcoli. In questo contesto, lo scopo del presente studio è valutare l'attività insetticida di alcuni componenti degli oli essenziali appartenenti a due diversi gruppi chimici, ovvero un monoterpene (il limonene) e tre alcoli aromatici ciclici (l'eugenolo, iso-eugenolo e carvacrolo) e le loro combinazioni sul parassita dei prodotti immagazzinati Tribolium castaneum (Herbst). Gli effetti tossici e repellenti dei diversi componenti sono valutati in laboratorio mediante test di fumigazione e repellenza. Lo studio della co-repellenza e della co-tossicità tra i diversi componenti mostra la presenza di tre effetti: sinergismo, indifferenza e antagonismo. Ciò è stato confermato dall'analisi delle componenti principali. Ovviamente, la struttura chimica e le interazioni tra i componenti degli oli essenziali influenzano le loro attività biologiche.…

Taschenbuch. Zustand: Neu. nach der Bestellung gedruckt Neuware - Printed after ordering - Uma grande variedade de óleos essenciais é conhecida pelas suas propriedades inseticidas e repelentes de insetos. Na maioria dos casos, essa atividade deve-se à presença de constituintes ativos representados principalmente por monoterpenos, sesquiterpenos e álcoois. Neste contexto, o objetivo deste estudo é avaliar a atividade inseticida de certos componentes de óleos essenciais que pertencem a dois grupos químicos diferentes, nomeadamente um monoterpeno (limoneno) e três álcoois aromáticos cíclicos (eugenol, iso-eugenol e carvacrol), bem como as suas combinações, sobre o pragador de produtos armazenados Tribolium castaneum (Herbst). Os efeitos tóxicos e repelentes dos diferentes componentes são avaliados em laboratório através de testes de fumigação e repelência. O estudo da co-repulsividade e da co-toxicidade entre os diferentes componentes mostra a presença de três efeitos: sinergismo, indiferença e antagonismo. Isto foi confirmado pela análise em componentes principais. É evidente que a estrutura química e as interações entre os componentes dos óleos essenciais influenciam as suas atividades biológicas.…

Taschenbuch. Zustand: Neu. nach der Bestellung gedruckt Neuware - Printed after ordering - Wiele ró¿nych olejków eterycznych znanych jest ze swoich w¿äciwo¿ci insektycydowych i odstraszaj¿cych owady. W wi¿kszo¿ci przypadków dziäanie to wynika z obecno¿ci sk¿adników aktywnych, reprezentowanych g¿ównie przez monoterpeny, seskwiterpeny i alkohole. W tym kontek¿cie celem niniejszego badania jest ocena dziäania owadobójczego niektórych sk¿adników olejków eterycznych nale¿¿cych do dwóch ró¿nych grup chemicznych, a mianowicie monoterpenu (limonenu) i trzech cyklicznych alkoholi aromatycznych (eugenolu, izo-eugenol i karwakrol), a tak¿e ich kombinacji na szkodniku magazynowym Tribolium castaneum (Herbst). Toksyczne i odstraszaj¿ce dziäanie ró¿nych sk¿adników ocenia si¿ w laboratorium za pomoc¿ testów fumigacyjnych i odstraszaj¿cych. Badanie wspó¿odstraszania i wspó¿toksyczno¿ci mi¿dzy ró¿nymi sk¿adnikami wykazäo obecno¿¿ trzech efektów: synergii, oboj¿tno¿ci i antagonizmu. Zostäo to potwierdzone analiz¿ g¿ównych sk¿adników. Oczywi¿cie struktura chemiczna i interakcje mi¿dzy sk¿adnikami olejków eterycznych wp¿ywaj¿ na ich dziäanie biologiczne.…