Academic literature on the topic 'Dibutyl phtalate'

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Journal articles on the topic "Dibutyl phtalate":

1

Wilck, Martin, Kaarle Hämeri, Frank Stratmann, and Markku Kulmala. "Homogeneous nucleation rates of dibutyl phtalate in nitrogen: Analysis of laminar flow reactor data." Journal of Aerosol Science 28 (September 1997): S171—S172. http://dx.doi.org/10.1016/s0021-8502(97)85086-0.

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Kurbatov, A., A. Drozd-Rzoska, S. J. Rzoska, M. Paluch, P. Malik, J. Zioło, and J. Jadżyn. "Universal Scaling of Alpha Relaxation in Complex Liquids." Zeitschrift für Naturforschung A 56, no. 12 (December 1, 2001): 893–94. http://dx.doi.org/10.1515/zna-2001-1217.

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Abstract A plot is given, showing the result of a scaling analysis of dielectric loss curves containing, apart from low molecular glass former data (glycerol, dibutyl phtalate), also loss curves of the following liquid crystalline materials, mostly in the iso­ tropic phase: 4-(2-methylbutyl)-4'cyanobiphenyl (5*CB, supercooled isotropic phase), 4-cyano-4-n-alkyl biphenyls (nematogens 5CB and 8CB, isotropic phase), 4-(4-cyano-4-butylcyclohexyl)-4'-octylbiphenyl (laterally substituted nema-togen, isotropic phase), and 4-n-alkyl-4'-isothiocyanatobiphe-nyl (5 and 10 BT, isotropic and SmE phases). The plot applies the scaling formula originally proposed for glassforming, super­ cooled liquids [Dendzik et al.7]. The result supports the recent suggestion that dielectric relaxation in the isotropic phase of nematogens may show some features typical for "glassy" mate­ rials.
3

SWANTARA, I. MADE DIRA, WIWIK SUSANAH RITA, and ANISA HERNINDYA. "Identifikasi Isolat Antikanker Spons Hyrtios Erecta." Indonesian Journal of Cancer 10, no. 4 (September 19, 2017): 123. http://dx.doi.org/10.33371/ijoc.v10i4.456.

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ABSTRACTIsolation, anticancer activity test, and identification of the toxic isolate from ethanol extract of the sponge Hyrtios erecta taken from Pari Island beach (Jakarta) has conducted. Extraction of the sponges was carried out by 70% ethanol at room temperature. Partition and purification of the compounds were done by column chromatography with the stationary phase of silica gel and the mobile phase of n-hexane-chloroform (2:8). Toxicity screening test was done based on BhrineShrimp Lethality Test (BSLT). In vitro anticancer activity test of the isolate was carried out using HeLa cell line. Identification of the compounds was performed by Gas chromatography-mass spectroscopy (GC-MS). Based on theresults, it was found that the toxic isolate of H. erecta sponges has anticancer activity with IC50 of 30,497 ppm. Four compounds was detected from the anticancer isolate i.e: 4-nonylphenol; dibutyl phthalate; hexanedioic acid bis(2-ethylhexyl) ester; and cholesterol. ABSTRAKTelah dilakukan isolasi, uji aktivitas antikanker, dan identifikasi isolat toksik yang berasal dari ekstrak etanol spons Hyrtios erecta yang diambil dari perairan Pulau Pari (Jakarta). Ekstraksi dilakukan dengan cara maserasi menggunakan etanol 70% pada temperatur kamar. Pemisahan dan pemurnian komponen menggunakan kromatografi kolom dengan fase diam silikagel dan fase gerak n-heksana-kloroform (2:8). Skrining toksisitas dilakukan dengan metode Bhrine Shrimp Lethality Test (BSLT). Uji antikanker secara in vitro isolat toksik tersebut menggunakan sel HeLa. Senyawanya diidentifikasi menggunakan Gas chromatography-mass spectroscopy (GC-MS). Berdasarkan hasil penelitian ini diperoleh bahwa isolat toksik spons H. erecta bersifat antikanker dengan IC50 sebesar 30,497 ppm. Pada isolat antikankertersebut terdeteksi empat senyawa, yaitu 4-nonylphenol; dibutil phtalat; ester heksadioat bis(2-etilheksil); dan kolesterol.
4

YAMAMURO, Masumi, Itaru TANAKA, Masanobu YAMAMOTO, and Tetsuya ARINOBU. "Bioaccumulation of Diethylhexyl and Dibutil Phtalates by a Diving Duck, Aythya fuligula." Journal of Japan Society on Water Environment 23, no. 3 (2000): 168–72. http://dx.doi.org/10.2965/jswe.23.168.

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Dissertations / Theses on the topic "Dibutyl phtalate":

1

Yedji, Rodrigue. "Perturbateurs endocriniens de type phtalate et poisson zèbre Danio rerio : approche chémoprotéomique pour l'identification des cibles et recherche de signatures d'exposition." Electronic Thesis or Diss., Université de Lorraine, 2022. http://www.theses.fr/2022LORR0106.

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Les esters de phtalate constituent une famille de composés synthétiques très répandue du fait de leurs usages comme plastifiants. Ils entrent dans la composition de plusieurs produits plastiques tels que les emballages, les jouets, les produits cosmétiques, certains systèmes de toiture en plastique, ainsi que les matériaux de décoration de meubles. Les phtalates ne sont pas liés de manière covalente à la matrice des polymères et sont donc facilement rejetés dans l'environnement, entraînant par conséquent une exposition animale et humaine. En absence de produits de substitutions non-toxiques, les composés de type phtalate restent encore largement utilisés dans l'industrie en dépit de la classification de certains d'entre eux dans la catégorie des substances présumées toxiques par l'European Chemicals Agency (ECHA), en tant que perturbateurs endocriniens. De plus, ils sont cancérigènes et tératogènes. L'effet délétère des esters de phtalates sur les organismes est établi mais le caractère multiple des effets observés montre que les mécanismes d'action des phtalates ne sont que très partiellement élucidés. Nous avons utilisé deux approches de protéomique ciblée pour tenter d'éclairer nos connaissances sur les mécanismes d'actions des esters de phtalate. Pour cela, le dibutyl phtalate (DBP) a été utilisé comme phtalate modèle, et le poisson zèbre (D. rerio) comme organisme modèle. L'utilisation de la première approche de protéomique ciblée, le profilage protéique basé sur l'affinité (affinity-based protein profiling, AfBPP) a permis de montrer la perturbation fonctionnelle de protéines par le DBP avec des sondes photoactivables issues de la synthèse de types aryle azide. L'optimisation des conditions de fixation des sondes diazirine (Diazirine 2) devrait nous permettre de disposer d'une sonde pouvant être utilisée pour identifier les cibles protéiques du DBP dans le protéome du poisson zèbre. La deuxième approche, le profilage basé sur l'activité des enzymes (activity-based protein profiling, ABPP) a permis d'utiliser une sonde réactive spécifique des hydrolases à sérine (SHs) pour cartographier pour la première fois des SHs actives dans le protéome du poisson zèbre. L'identification des SHs dérégulées en présence de DBP chez les larves de poisson zèbre a également été rapportée dans cette étude. Nos résultats globaux indiquent que les approches de protéomiques ciblées telles que l'ABPP ou l'AfBPP peuvent être un atout pour comprendre les mécanismes d'action liés aux xénobiotiques en écotoxicologie
Phthalate esters are a family of synthetic compounds widely used as plasticisers. They are used in a number of plastic products such as packaging, toys, cosmetics, plastic roofing system and furniture decoration materials. Phthalates are not covalently bonded to the polymer matrix and are therefore easily released into the environment, resulting in animal and human exposure. In the absence of non-toxic substitutes, phthalate compounds are still widely used in industry, despite the classification of some of them by the European Chemicals Agency (ECHA) as suspected toxic substances and as endocrine disruptors. In addition, they are carcinogenic and teratogenic. The deleterious effect of phthalate esters on organisms is established, but the multiple nature of the effects observed shows that the mechanisms of action of phthalates are only partially elucidated. We used two targeted proteomics approaches to shed light on the mechanisms of action of phthalate esters. Dibutyl phthalate (DBP) was used as a model phthalate and zebrafish (D. rerio) as a model organism. Using the first targeted proteomics approach, affinity-based protein profiling (AfBPP), the functional disruption of proteins by DBP with photoaffinity probes from aryl azide synthesis was demonstrated. Optimisation of the binding conditions for diazirine probes (Diazirine 2) should provide us with a probe that can be used to identify DBP protein targets in the zebrafish proteome. The second approach, activity-based protein profiling (ABPP), used a reactive probe specific for serine hydrolases (SHs) to map active SHs in the zebrafish proteome for the first time. The identification of deregulated SHs in the presence of DBP in zebrafish larvae was also reported in this study. Overall, our results indicate that targeted proteomics approaches such as ABPP or AfBPP can be an asset for understanding xenobiotic-related mechanisms of action in ecotoxicology

Books on the topic "Dibutyl phtalate":

1

Canada, Canada Environment, and Canada Health Canada, eds. Dibutyl phthalate. [Ottawa]: Environment Canada, 1994.

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2

Canada, Canada Environnement. Phtalate de butyle et de benzyle. Ottawa, Ont: Environnement Canada, 2000.

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