Do Nascimento Alexandre a (61 results)

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Taschenbuch. Condition: Neu. Activité larvicide de l'huile essentielle de clou de girofle | Huile essentielle de clou de girofle : extraction, caractérisation et activité larvicide contre le moustique Aedes aegypti | Alexandre A. do Nascimento (u. a.) | Taschenbuch | Französisch | 2025 | Editions Notre Savoir | EAN 9786209397660 | Verantwortliche Person für die EU: preigu GmbH & Co. KG, Lengericher Landstr. 19, 49078 Osnabrück, mail[at]preigu[dot]de | Anbieter: preigu.

Paperback. Condition: new. Paperback. Based on the extraction and analytical study of the essential oil from the flower buds of Syzygium aromaticum L., the larvicidal effect of the oil against third-stage larvae of the Aedes aegypti mosquito (Linnaeus, 1762) was analyzed. The essential oil was quantitatively extracted by hydrodistillation. The physicochemical properties of the essential oil (density, refractive index, solubility, color, and appearance) were determined. The oil was chemically characterized by quantifying its components and identifying its major component by gas chromatography coupled with mass spectrometry. The LC50 of the oil and the eugenol standard was calculated, in addition to the 95% confidence limit, using the methods of Reed-Muench (1938) and Pizzi (1950), respectively. The major component of the oil (eugenol) was identified by gas chromatography (GC-MS). The oil exhibited lethal larvicidal activity at a concentration of 120 ug/mL. The essential oil obtained an LC50 of 63.36 (2.12) ug/mL and the eugenol standard 79.39 (2.10) ug/mL. The results using clove essential oil show promise when used against the Aedes aegypti mosquito. This item is printed on demand. Shipping may be from multiple locations in the US or from the UK, depending on stock availability.

Condition: New.

Taschenbuch. Condition: Neu. Attività larvicida dell'olio essenziale di chiodi di garofano | Olio essenziale di chiodi di garofano: estrazione, caratterizzazione e attività larvicida contro la zanzara Aedes aegypti | Alexandre A. do Nascimento (u. a.) | Taschenbuch | Italienisch | 2025 | Edizioni Sapienza | EAN 9786209288241 | Verantwortliche Person für die EU: preigu GmbH & Co. KG, Lengericher Landstr. 19, 49078 Osnabrück, mail[at]preigu[dot]de | Anbieter: preigu.

Paperback. Condition: Brand New. 100 pages. Portuguese language. 8.66x5.91x0.23 inches. In Stock.

Taschenbuch. Condition: Neu. Larvizide Wirkung des ätherischen Öls der Gewürznelke | Ätherisches Öl der Gewürznelke: Extraktion, Charakterisierung und larvizide Wirkung gegen die Mücke Aedes aegypti | Alexandre A. do Nascimento (u. a.) | Taschenbuch | 80 S. | Deutsch | 2025 | Verlag Unser Wissen | EAN 9786209345470 | Verantwortliche Person für die EU: SIA OmniScriptum Publishing, Brivibas Gatve 197, 1039 RIGA, LETTLAND, customerservice[at]vdm-vsg[dot]de | Anbieter: preigu.

First Edition. Near fine paperback copy; edges very slightly dust-dulled and nicked. Remains particularly and surprisingly well-preserved overall; tight, bright, clean and especially sharp-cornered. ; 162 pages; Description: 162, [1] p. , [14] leaves of plates : ill. , map ; 22 cm. Subjects: Angola --Colonization. 3 Kg.

First Edition. Near fine paperback copy; edges very slightly dust-dulled and nicked. Remains particularly and surprisingly well-preserved overall; tight, bright, clean and especially sharp-cornered. ; 162 pages; Description: 162, [1] p. , [14] leaves of plates : ill. , map ; 22 cm. Subjects: Angola --Colonization. 1 Kg.

Softcover. Condition: Gut.

Paperback. Condition: new. Paperback. A partir de l'extraction et de l'etude analytique de l'huile essentielle des boutons floraux de l'espece Syzygium aromaticum L., l'effet larvicide de l'huile contre les larves au troisieme stade du moustique Aedes aegypti (Linnaeus, 1762) a ete analyse. L'huile essentielle a ete extraite quantitativement par hydrodistillation. Les proprietes physico-chimiques de l'huile essentielle (densite, indice de refraction, solubilite, couleur et aspect) ont ete determinees. L'huile a ete caracterisee chimiquement, ses composants ont ete quantifies et son composant majoritaire a ete identifie par chromatographie en phase gazeuse couplee a la spectrometrie de masse. La CL50 de l'huile et de l'eugenol standard a ete calculee, ainsi que la limite de confiance a 95 % de probabilite, a partir des methodes de Reed-Muench (1938) et Pizzi (1950), respectivement. Le composant majoritaire de l'huile (eugenol) a ete identifie par chromatographie en phase gazeuse (CG-EM). L'huile a montre une activite larvicide letale a une concentration de 120 ug.mL-1. L'huile essentielle a obtenu une CL50 de 63,36 (2,12) ug mL-1 et l'echantillon standard d'eugenol 79,39 (2,10) ug mL-1. Les resultats obtenus avec l'huile essentielle de clou de girofle sont prometteurs lorsqu'elle est utilisee contre le moustique Aedes aegypti. This item is printed on demand. Shipping may be from multiple locations in the US or from the UK, depending on stock availability.

Taschenbuch. Condition: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Based on the extraction and analytical study of the essential oil from the flower buds of Syzygium aromaticum L., the larvicidal effect of the oil against third-stage larvae of the Aedes aegypti mosquito (Linnaeus, 1762) was analyzed. The essential oil was quantitatively extracted by hydrodistillation. The physicochemical properties of the essential oil (density, refractive index, solubility, color, and appearance) were determined. The oil was chemically characterized by quantifying its components and identifying its major component by gas chromatography coupled with mass spectrometry. The LC50 of the oil and the eugenol standard was calculated, in addition to the 95% confidence limit, using the methods of Reed-Muench (1938) and Pizzi (1950), respectively. The major component of the oil (eugenol) was identified by gas chromatography (GC-MS). The oil exhibited lethal larvicidal activity at a concentration of 120 µg/mL. The essential oil obtained an LC50 of 63.36 (±2.12) µg/mL and the eugenol standard 79.39 (±2.10) µg/mL. The results using clove essential oil show promise when used against the Aedes aegypti mosquito. 76 pp. Englisch.

Taschenbuch. Condition: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -A partir de la extracción y el estudio analítico del aceite esencial de los botones florales de la especie Syzygium aromaticum L., se analizó el efecto larvicida del aceite contra las larvas en tercer estadio del mosquito Aedes aegypti (Linnaeus, 1762). Se extrajo cuantitativamente el aceite esencial por hidrodestilación. Se determinaron las propiedades físico-químicas del aceite esencial (densidad, índice de refracción, solubilidad, color y apariencia). Se caracterizó químicamente el aceite, cuantificando sus componentes e identificando su componente mayoritario mediante cromatografía de gases acoplada a espectrometría de masas. Se calculó la CL50 del aceite y del patrón de eugenol, además del límite de confianza al 95 % de probabilidad, a partir de los métodos de Reed-Muench (1938) y Pizzi (1950), respectivamente. Se identificó mediante el método de cromatografía de gases (CG-EM) el componente mayoritario del aceite (eugenol). El aceite mostró actividad larvicida letal a una concentración de 120 µg.mL-1. El aceite esencial obtuvo una CL50 de 63,36 (±2,12) µg mL-1 y el patrón de eugenol 79,39 (±2,10) µg mL-1. Los resultados obtenidos con el aceite esencial de clavo de olor son prometedores cuando se utiliza contra el mosquito Aedes aegypti. 80 pp. Spanisch.

Condition: New. Print on Demand.

Paperback. Condition: new. Paperback. A partire dall'estrazione e dallo studio analitico dell'olio essenziale dei boccioli floreali della specie Syzygium aromaticum L., e stato analizzato l'effetto larvicida dell'olio contro le larve al terzo stadio della zanzara Aedes aegypti (Linnaeus, 1762). L'olio essenziale e stato estratto quantitativamente mediante idrodistillazione. Sono state determinate le proprieta fisico-chimiche dell'olio essenziale (densita, indice di rifrazione, solubilita, colore e aspetto). L'olio e stato caratterizzato chimicamente, quantificandone i componenti e identificandone il componente principale mediante gascromatografia accoppiata alla spettrometria di massa. E stata calcolata la CL50 dell'olio e dello standard di eugenolo, oltre al limite di confidenza al 95% di probabilita, utilizzando i metodi di Reed-Muench (1938) e Pizzi (1950), rispettivamente. Il componente principale dell'olio (eugenolo) e stato identificato mediante gascromatografia (CG-EM). L'olio ha mostrato attivita larvicida letale a una concentrazione di 120 ug.mL-1. L'olio essenziale ha ottenuto un CL50 di 63,36 (2,12) ug mL-1 e lo standard di eugenolo 79,39 (2,10) ug mL-1. I risultati ottenuti utilizzando l'olio essenziale di chiodi di garofano si sono dimostrati promettenti quando utilizzati contro la zanzara Aedes aegypti. This item is printed on demand. Shipping may be from multiple locations in the US or from the UK, depending on stock availability.

Paperback. Condition: new. Paperback. Ausgehend von der Extraktion und analytischen Untersuchung des aetherischen OEls aus den Bluetenknospen der Art Syzygium aromaticum L. wurde die larvizide Wirkung des OEls gegen Larven im dritten Stadium der Muecke Aedes aegypti (Linnaeus, 1762) analysiert. Das aetherische OEl wurde durch Wasserdampfdestillation quantitativ extrahiert. Die physikalisch-chemischen Eigenschaften des aetherischen OEls (Dichte, Brechungsindex, Loeslichkeit, Farbe und Aussehen) wurden bestimmt. Das OEl wurde chemisch charakterisiert, indem seine Bestandteile quantifiziert und sein Hauptbestandteil durch Gaschromatographie in Verbindung mit Massenspektrometrie identifiziert wurden. Die LC50 des OEls und des Eugenol-Standards sowie die Konfidenzgrenze bei 95 % Wahrscheinlichkeit wurden nach den Methoden von Reed-Muench (1938) bzw. Pizzi (1950) berechnet. Der Hauptbestandteil des OEls (Eugenol) wurde durch Gaschromatographie (GC-MS) identifiziert. Das OEl zeigte eine letale larvizide Wirkung bei einer Konzentration von 120 ug.mL-1. Das aetherische OEl erreichte eine LC50 von 63,36 (2,12) ug mL-1 und der Eugenol-Standard 79,39 (2,10) ug mL-1. Die Ergebnisse mit dem aetherischen OEl der Gewuerznelke sind vielversprechend, wenn es gegen die Muecke Aedes aegypti eingesetzt wird. This item is printed on demand. Shipping may be from multiple locations in the US or from the UK, depending on stock availability.

Paperback. Condition: new. Paperback. Na podstawie ekstrakcji i analizy olejku eterycznego z pakow kwiatowych gatunku Syzygium aromaticum L. przeanalizowano dzialanie larwobojcze olejku na larwy komara Aedes aegypti (Linnaeus, 1762) w trzecim stadium rozwoju. Olejki eteryczne wyekstrahowano ilosciowo metoda hydrodestylacji. Okreslono wlasciwosci fizykochemiczne olejku eterycznego (gestosc, wspolczynnik zalamania swiatla, rozpuszczalnosc, barwa i wyglad). Scharakteryzowano chemicznie olejek, okreslajac ilosciowo jego skladniki i identyfikujac jego glowny skladnik za pomoca chromatografii gazowej sprzezonej ze spektrometria masowa. Obliczono CL50 olejku i wzorca eugenolu, a takze 95% przedzial ufnosci, stosujac odpowiednio metody Reeda-Muencha (1938) i Pizziego (1950). Glowny skladnik olejku (eugenol) zidentyfikowano metoda chromatografii gazowej (CG-EM). Olejek wykazal smiertelna aktywnosc larwobojcza w stezeniu 120 ug.mL-1. Olejek eteryczny uzyskal CL50 wynoszaca 63,36 (2,12) ug mL-1, a wzorzec eugenolu 79,39 (2,10) ug mL-1. Wyniki uzyskane przy uzyciu olejku eterycznego z gozdzikow sa obiecujace w przypadku stosowania go przeciwko komarom Aedes aegypti. This item is printed on demand. Shipping may be from multiple locations in the US or from the UK, depending on stock availability.

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Taschenbuch. Condition: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -À partir de l'extraction et de l'étude analytique de l'huile essentielle des boutons floraux de l'espèce Syzygium aromaticum L., l'effet larvicide de l'huile contre les larves au troisième stade du moustique Aedes aegypti (Linnaeus, 1762) a été analysé. L'huile essentielle a été extraite quantitativement par hydrodistillation. Les propriétés physico-chimiques de l'huile essentielle (densité, indice de réfraction, solubilité, couleur et aspect) ont été déterminées. L'huile a été caractérisée chimiquement, ses composants ont été quantifiés et son composant majoritaire a été identifié par chromatographie en phase gazeuse couplée à la spectrométrie de masse. La CL50 de l'huile et de l'eugénol standard a été calculée, ainsi que la limite de confiance à 95 % de probabilité, à partir des méthodes de Reed-Muench (1938) et Pizzi (1950), respectivement. Le composant majoritaire de l'huile (eugénol) a été identifié par chromatographie en phase gazeuse (CG-EM). L'huile a montré une activité larvicide létale à une concentration de 120 µg.mL-1. L'huile essentielle a obtenu une CL50 de 63,36 (±2,12) µg mL-1 et l'échantillon standard d'eugénol 79,39 (±2,10) µg mL-1. Les résultats obtenus avec l'huile essentielle de clou de girofle sont prometteurs lorsqu'elle est utilisée contre le moustique Aedes aegypti. 80 pp. Französisch.

Paperback. Condition: new. Paperback. Based on the extraction and analytical study of the essential oil from the flower buds of Syzygium aromaticum L., the larvicidal effect of the oil against third-stage larvae of the Aedes aegypti mosquito (Linnaeus, 1762) was analyzed. The essential oil was quantitatively extracted by hydrodistillation. The physicochemical properties of the essential oil (density, refractive index, solubility, color, and appearance) were determined. The oil was chemically characterized by quantifying its components and identifying its major component by gas chromatography coupled with mass spectrometry. The LC50 of the oil and the eugenol standard was calculated, in addition to the 95% confidence limit, using the methods of Reed-Muench (1938) and Pizzi (1950), respectively. The major component of the oil (eugenol) was identified by gas chromatography (GC-MS). The oil exhibited lethal larvicidal activity at a concentration of 120 ug/mL. The essential oil obtained an LC50 of 63.36 (2.12) ug/mL and the eugenol standard 79.39 (2.10) ug/mL. The results using clove essential oil show promise when used against the Aedes aegypti mosquito. This item is printed on demand. Shipping may be from our UK warehouse or from our Australian or US warehouses, depending on stock availability.

Condition: New. Print on Demand.