Log in

Relevant bibliographies by topics / Talc

Academic literature on the topic 'Talc'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 August 2024

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Contents

Journal articles
Dissertations / Theses
Books
Book chapters
Conference papers
Reports

Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Talc.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Journal articles on the topic "Talc"

1

Pi-Puig, Teresa, Dante Yosafat Animas-Torices, and Jesús Solé. "Mineralogical and Geochemical Characterization of Talc from Two Mexican Ore Deposits (Oaxaca and Puebla) and Nine Talcs Marketed in Mexico: Evaluation of Its Cosmetic Uses." Minerals 10, no. 5 (April 26, 2020): 388. http://dx.doi.org/10.3390/min10050388.

Full text

Abstract:

The detailed mineralogical, physical and chemical characterization of nine samples of imported cosmetic talc and of two samples of talc from currently non-productive Mexican ore deposits (Oaxaca and Puebla States) is presented. The imported cosmetic talc was classified into two groups, considering whether they are packed in the country of origin or in Mexico and considering their price. X-ray diffraction, infrared short wave, thermogravimetric analysis and scanning electron microscopy were used for mineralogical characterization. For the physical characterization, colorimetry and laser granulometry were used. The chemical composition (major, trace elements) was studied by ICP-MS. It was concluded that only the highest priced and imported in packaged form talcs meet the specific purity requirements for a talc of cosmetic type. The talcs that are packed in Mexico and the talc of the studied Mexican deposits present mineralogical and chemical impurities that make their use difficult in the manufacture of high-quality cosmetic talc. The low-price talc should not be sold as cosmetic talc, and the regulations in Mexico on this subject should be reviewed and updated.

APA, Harvard, Vancouver, ISO, and other styles

2

Doucouré, Hinda, Florence Auguy, Servane Blanvillain-Baufumé, Sandrine Fabre, Marc Gabriel, Emilie Thomas, Fleur Dambreville, et al. "The Rice ILI2 Locus Is a Bidirectional Target of the African Xanthomonas oryzae pv. oryzae Major Transcription Activator-like Effector TalC but Does Not Contribute to Disease Susceptibility." International Journal of Molecular Sciences 23, no. 10 (May 16, 2022): 5559. http://dx.doi.org/10.3390/ijms23105559.

Full text

Abstract:

Xanthomonas oryzae pv. oryzae (Xoo) strains that cause bacterial leaf blight (BLB) limit rice (Oryza sativa) production and require breeding more resistant varieties. Transcription activator-like effectors (TALEs) activate transcription to promote leaf colonization by binding to specific plant host DNA sequences termed effector binding elements (EBEs). Xoo major TALEs universally target susceptibility genes of the SWEET transporter family. TALE-unresponsive alleles of clade III OsSWEET susceptibility gene promoter created with genome editing confer broad resistance on Asian Xoo strains. African Xoo strains rely primarily on the major TALE TalC, which targets OsSWEET14. Although the virulence of a talC mutant strain is severely impaired, abrogating OsSWEET14 induction with genome editing does not confer equivalent resistance on African Xoo. To address this contradiction, we postulated the existence of a TalC target susceptibility gene redundant with OsSWEET14. Bioinformatics analysis identified a rice locus named ATAC composed of the INCREASED LEAF INCLINATION 2 (ILI2) gene and a putative lncRNA that are shown to be bidirectionally upregulated in a TalC-dependent fashion. Gain-of-function approaches with designer TALEs inducing ATAC sequences did not complement the virulence of a Xoo strain defective for SWEET gene activation. While editing the TalC EBE at the ATAC loci compromised TalC-mediated induction, multiplex edited lines with mutations at the OsSWEET14 and ATAC loci remained essentially susceptible to African Xoo strains. Overall, this work indicates that ATAC is a probable TalC off-target locus but nonetheless documents the first example of divergent transcription activation by a native TALE during infection.

APA, Harvard, Vancouver, ISO, and other styles

3

TIJERO, ANTONIO, M. CONCEPCIÓN MONTE, JULIO TIJERO, and ANGELES BLANCO. "Pitch detackification with natural and modified talcs." October 2011 10, no. 10 (November 1, 2011): 53–59. http://dx.doi.org/10.32964/tj10.10.53.

Full text

Abstract:

Pitch deposition in pulp or in different parts of the manufacturing system can lead to a decrease in the quality of the final paper produced and to manufacturing efficiency problems. One of the methods to control pitch deposition is the use of talc. Talc acts primarily as a detackifier and must be part of the deposit to control further deposition. The effectiveness of talc as a control agent depends on its structural and surface characteristics (e.g., specific surface, surface energy, surface charge, and ratio of lypophilic to hydrophilic surface), which are related to its mineral composition and the thermal and surface treatments it has undergone. For this study, we tested five commercial talcs, corresponding to two groups of different mineralogical compositions, to determine their detackification capacity using a deposition tester developed by the Complutense University of Madrid, Spain. In this method, the quantification of the deposits is carried out by an image analysis of stainless steel collectors on which the deposit has formed. After image analysis, a qualitative analysis to determine the deposit organic fraction is carried out by gas chromatography after deposit extraction. The detackification capacity is expressed as the reduction of the deposits formed on the collectors when the different talcs at several concentrations are added to the pulp suspensions. The results show that pitch detackiness by talc addition is related to talc concentration and mineral surface properties, as for example, chlorite proportion, surface area, and surface treatment, and to the adsorption capacity of pitch on talcs. In general, the talc having the highest quantity of mineral talc presents the best detackification capability, and the detackification of all talcs studied was appreciably reduced at low proportion of addition.

APA, Harvard, Vancouver, ISO, and other styles

4

You, Young-Chul, and Youn-Cheol Kim. "Study on the talc dispersion and rheological properties of PP/talc compound." Journal of the Korea Academia-Industrial cooperation Society 12, no. 9 (September 30, 2011): 4261–66. http://dx.doi.org/10.5762/kais.2011.12.9.4261.

Full text

APA, Harvard, Vancouver, ISO, and other styles

5

Montes, Juan F., Jaume Ferrer, María A. Villarino, Bernat Baeza, Marta Crespo, and José García-Valero. "Influence of Talc Dose on Extrapleural Talc Dissemination after Talc Pleurodesis." American Journal of Respiratory and Critical Care Medicine 168, no. 3 (August 2003): 348–55. http://dx.doi.org/10.1164/rccm.200207-767oc.

Full text

APA, Harvard, Vancouver, ISO, and other styles

6

Ferrage, E., F. Martin, S. Petit, S. Pejo-soucaille, P. Micoud, G. Fourty, J. Ferret, S. Salvi, P. De Parseval, and J. P. Fortune. "Evaluation of talc morphology using FTIR and H/D substitution." Clay Minerals 38, no. 2 (June 2003): 141–50. http://dx.doi.org/10.1180/0009855033820084.

Full text

Abstract:

AbstractDeuteration (H/D substitution at 200ºC) was performed on powders of two ground talcs of different particle shapes (different basal/lateral surface ratios). Results indicate that the deuteration process is only efficient on lateral talc surfaces, and suggest that the hydrogens located in the hexagonal ring of the talc basal surfaces are not exchanged. The FTIR spectra collected from the two talc samples show that it is possible to discriminate between particles with the same specific surface area but with different basal/lateral surface ratios using the deuteration process.

APA, Harvard, Vancouver, ISO, and other styles

7

Cohen, Robbin G., William W. Shely, Suzanne E. Thompson, Jeffrey A. Hagen, Charles C. Marboe, Tom R. DeMeester, and Vaughn A. Starnes. "Talc pleurodesis: Talc slurry versus thoracoscopic talc insufflation in a porcine model." Annals of Thoracic Surgery 62, no. 4 (October 1996): 1000–1004. http://dx.doi.org/10.1016/0003-4975(96)00488-2.

Full text

APA, Harvard, Vancouver, ISO, and other styles

8

Castro, Michael J., Jose Jessurun, and Stefan E. Pambuccian. "Talc crystals in pleurodesis-associated talc granuloma." Diagnostic Cytopathology 40, no. 7 (April 28, 2011): 617–18. http://dx.doi.org/10.1002/dc.21700.

Full text

APA, Harvard, Vancouver, ISO, and other styles

9

Martínez-Téllez, Elisabeth, Juan Carlos Trujillo-Reyes, Mauro Guarino, Ramón Rami-Porta, and Josep Belda-Sanchis. "Talc pleurodesis." ASVIDE 5 (August 2018): 693. http://dx.doi.org/10.21037/asvide.2018.693.

Full text

APA, Harvard, Vancouver, ISO, and other styles

10

&NA;. "Purified talc." Reactions Weekly &NA;, no. 1174 (October 2007): 23. http://dx.doi.org/10.2165/00128415-200711740-00066.

Full text

APA, Harvard, Vancouver, ISO, and other styles

More sources

Dissertations / Theses on the topic "Talc"

1

Arnoux, Francis, and Bernard Majza. "Contribution à l'étude géologique des gisements de talc du massif du Saint-Barthélémy (Ariège)." Université de Franche-Comté. UFR des sciences et techniques, 1986. http://www.theses.fr/1986BESA4000.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

Gallego, Jean-Christophe. "Elaboration d'hybrides organiques-inorganiques de structure de type phyllosilicate 2:1 et leurs applications." Mulhouse, 2008. http://www.theses.fr/2008MULH2999.

Full text

Abstract:

Cette thèse décrit la synthèse et l'étude d'hybrides organique-inorganiques de type talc. La synthèse dont est inspiré ce travail a été décrite pour la première fois par Fukushima & Tani en 1995. Celle-ci est particulièrement attractive du fait des conditions de synthèse douce. Ainsi ce travail décrit la recherche des conditions optimales de synthèse sur l'exemple su N-phénylaminométhyl - TLH. Par la suite, nous décrivons la synthèse d'une large série d'hybrides organiques-inorganiques de structure de type talc. De nombreuses techniques de caractérisation sont ensuite employées pour décrire précisément la structure de ces matériaux. Enfin, le dernier chapitre illustre l'application comme renfort de ces matériaux hybrides
This thesis describes the synthesis and study of organic-inorganic talc like hybrid. The synthesis is inspired frome the work of Fukushima & Tani in 1995. This synthesis is particularly attractive because of soft conditions. Thus this work describes the search for optimum conditions of synthesis on the example N- phenylaminomethyl - TLH. Subsequently, we describe the synthesis of a wide range of organic-inorganic talc like hybrid. Many characterization techniques are then used to precisely describe the structure of these materials. The last chapter illustrates the application as a reinforcement of these hybrid materials

APA, Harvard, Vancouver, ISO, and other styles

3

Khan, Shahid Wahab. "Rheological properties of talc-filled polypropylene." Thesis, Loughborough University, 2001. https://dspace.lboro.ac.uk/2134/7567.

Full text

Abstract:

In this study polypropylene was modified by a range of talc (Mg3(OH)2Si4OlO) fillers. Three different types of surface modifiers were also used, two types of silanes (octyltriethoxysilane and y-aminopropyltriethoxysilane) and maleic anhydride modified polypropylene plus polyethylene wax as an external lubricant. A series of compounds were prepared in an APV twin screw compounder, based on talc addition level, morphology, particle size, surface coatings and coupling agents. The study showed that addition of talc to PP increases the shear viscosity and the blend system generally follows the power law in the shear rate range studied. The experimental values obtained with talc-filled PP were compared with theoretical data obtained from the Maron-Pierce type equation. It was found that theory predicts a higher value of relative viscosity for some talc fillers. A model equation is proposed for talc-filled PP that predicts accurately relative viscosity of the compound for different volume fractions of talc filler. PP-filled with talc having predominantly acicular particles (high surface area), shows a highest shear viscosity values, since high surface area fillers tend to increase the occluded polymer increasing the effective filler volume. The addition of a high level of coating decreasess hearv iscosity of the system,a ddition of a reactivec oupling systems lightly increasess hearv iscosity. Wall slip for unfilled PP was consistently evident. The slip velocity increases systematically with shear stress, but there is a critical value below which slip velocity was negligible. Addition of talc decreased the slip velocity at a given stress. A mechanism of slip has been proposed whereby a 'slip layer' on the die surface provides a sharp, low energy interface over which, at sufficiently high shear stress, the fluid PP can slip. A new empirical model has been proposed to predict the slip velocity of filled PP, as a function of talc volume fraction. PP filled with 10 % wt. talc having predominantly acicular particles, showed a higher slip velocity than PP filled with talc of other morphologies. It was observed that slip velocity increased by coating talc (either by use of coating or coupling agents) due to modification of velocity distributions in the flow channel. Extrudate swell increases with increasing shear rate for unfilled and talc-filled PP compounds. Inclusion of talc generally decreases the swell over the entire range of shearr ates studied,b ecauset he addition of talc to PP increasesth e shear/extensional modulus and thereby decreasede lastic strain recovery. No appreciablei nfluence of particle size on swell ratio was observed. Coating talc with octyltriethoxysilane produces higher swell relative to uncoated filled PP, and higher coating levels consistently produced higher swell values. However, coupling agent 7- aminopropyltriethoxsilane and maleic anhydride modified polypropylene both reduced the swell of the filled polymer system, with a more pronounced effect in extension than in shear. Swell decreased with an increase in capillary length-todiameter ratio and increased with increase in shear rate, (or shear stress) with or without coating/coupling agent. Addition of talc fillers delayed the onset of melt fracture and higher loadings of talc completely suppressed the melt fracture in the range of shear rate studied. Melt fracture for unfilled and filled PP has been studied and quantified by the frequency of the melt distortion. A mechanism for polymer melt fracture has been proposed to explain the results, based on the tensile failure of the material in extensional deformation. It was found that shear rate and die L/D ratio were the major causes of changesin severity of melt fracture for the unfilled and talc-filled compoundss tudied. However, talc morphology and particle size did not have significant effects on the severity of melt fracture.

APA, Harvard, Vancouver, ISO, and other styles

4

Amorim, Camila Almeida. "Efeitos da radiação ionizante nas propriedades de compósitos de poliamida 6 com dióxido de silício coloidal (AEROSIL&reg)." Universidade de São Paulo, 2017. http://www.teses.usp.br/teses/disponiveis/85/85131/tde-07122017-094709/.

Full text

Abstract:

Os polímeros têm sido usados em áreas diferentes, como indústrias automotivas, eletrônicas e de construção civil. A poliamida 6 (PA 6) é um dos principais plásticos de engenharia com aplicações em diversas áreas produtivas, devido as suas propriedades térmicas, mecânicas e a estabilidade dimensional. O objetivo principal deste trabalho foi estudar a potencialidade do uso do dióxido de silício coloidal (SiO2) como carga em substituição ao talco, estudando o efeito da radiação ionizante em suas propriedades. O SiO2 é uma substância amorfa com baixa densidade que tem potencial para ser usado como carga mineral em substituição ao talco na matriz da resina de PA 6. Atualmente o talco é a carga mineral mais utilizada pelas indústrias, por isto vem sofrendo redução de suas reservas ao longo dos anos. Este estudo foi desenvolvido a partir da preparação de um \"masterbeach\" de PA 6 com SiO2. Posteriormente, este \"masterbeach\" foi fracionado em diferentes porcentagens em uma matriz de PA 6. Os corpos de prova das amostras foram processados em uma extrusora dupla rosca, injetados e irradiados no acelerador de elétrons para estudar o efeito da radiação ionizante no compósito de PA 6 com diferentes porcentagens de SiO2. Assim sendo, as propriedades destes compósitos foram analisadas e comparadas com as propriedades das amostras de PA6 com talco. Os resultados mostraram que a utilização do SiO2 como carga para a poliamida 6 é tecnicamente viável, uma vez que suas propriedades foram semelhantes ao compósito de PA 6 com talco. A irradiação dos compósitos estudados apresentou melhorias principalmente nas propriedades térmicas e mecânicas.
Polymers have been used in different fields, such as automotive, civil construction and electronics industries. Polyamide 6 (PA 6) is one of the main engineering plastics with several productive applications areas. By the same token, there was an interest in improving their thermal, mechanical and dimensional stability properties. The main objective of this work was to study the potentiality of colloidal silicon dioxide such as filler. According to literature, SiO2 is an amorphous substance with low density. In addition, this material has the potential to be used as a mineral filler to replace the talc in the PA 6 resin matrix. Therefore, SiO2 load was compared to the mineral filler talc which is currently used by industries. Consequently, their reservations are decreasing all over the years. Indeed, these studies were developed from colloidal silicon dioxide with PA 6 the masterbatch elaboration. In addition, the masterbatch was fractionated in different percentages in a PA 6 matrix. It is important to emphasize that all samples were injected and irradiated by an electrons accelerator. Furthermore, the effect of ionizing radiation on the PA 6 composite in different SiO2 percentages was studied. In short, radiation interacts with the polymer by transferring energy to a polymer chain causing modifications that are interfering with its properties. Thus, the mechanical and thermal properties of these composites were measured. In this manner, the irradiation composite studied in that research brought improvements in the thermal and mechanical properties evaluated. In conclusion, results have shown that the use of colloidal silicon dioxide in polyamide 6 composite is technically feasible load to replace talc.

APA, Harvard, Vancouver, ISO, and other styles

5

Fiorentino, Brice. "Orientation cristalline de la matrice résultant de la déformation et des charges lamellaires dans des nanocomposites thermoplastiques." Thesis, Lyon 1, 2012. http://www.theses.fr/2012LYO10241.

Full text

Abstract:

Cette étude s’inscrit dans le projet ANR Blanc COPIN qui a pour but de développer et de comprendre les nanocomposites à partir de nanoparticules inorganiques mélangées à un polymère semi-cristallin. L’innovation du partenaire du projet, Imerys, a été de synthétiser des particules de talcs à l’échelle nanométrique. Le talc étant connu pour ces effets nucléants, l’objectif est d’utiliser ces nanoparticules pour voir leur influence sur un matériau semi-cristallin et plus spécifiquement sur la cristallisation de ce dernier lorsqu’elles sont orientées. Différents talcs synthétiques ont été étudiés changeant au niveau de leur durée de synthèse ou encore de leur modification de surface. Pour cela, la première partie de cette étude a été de disperser le talc en utilisant ou non des modifications chimiques de surface ainsi que des compatibilisants afin d’obtenir le meilleur état de dispersion et de distribution des particules. Ces continuums d’interactions ainsi créés montrent une nette amélioration de l’état de dispersion mais aussi l’amélioration des propriétés telles que la tenue en température. Les parties suivantes ont concernées plus spécifiquement la cristallisation en convoitant d’expliquer comment les nanoparticules peuvent s’orienter lors de l’écoulement tel que le cisaillement, comment elles génèrent une orientation cristalline spécifique du à leur effet nucléant, quel est le mécanisme prépondérant de la cristallisation entre la nucléation par l’orientation de macromolécules ou la nucléation provenant des nanoparticules. Il a aussi été question de déterminer les morphologies cristallines des nanocomposites lors du cisaillement
This study is part of the ANR Blanc COPIN which aim is to develop and understand the nanocomposites from inorganic nanoparticles mixed with a semi-crystalline polymer. The innovation of the project partner, Imerys, was to synthesized talc particles at the nanoscale. Talc is known for his nucleating effects and the goal is to use these nanoparticles to see their influence on a semi-crystalline material. Several synthetic talcs were employed differing from the synthesis time and chemical surface modifications. For this, the first part of this study was to disperse the talc using or not chemical modifications of surfaces as well as compatibilizers to obtained the best dispersion state and particles distribution. These continuums interaction created show a real improvement in the dispersion but also of properties such as heat resistance. The following parties concerned more specifically the crystallization trying to explain how nanoparticles can be oriented during shear flow, what is the leverage of these talcs on the crystallization when it was oriented, how they generate a specific crystal orientation coming from their nucleating effect, which is the predominant mechanism of crystallization nucleation between the macromolecules orientations or the nucleation of nanoparticles. It was also a question of determining the resulting crystal morphologies

APA, Harvard, Vancouver, ISO, and other styles

6

Godfroy, Patrice. "Performance des mélanges polypropylène/talc/polyéthylène-octène." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape8/PQDD_0006/MQ42908.pdf.

Full text

APA, Harvard, Vancouver, ISO, and other styles

7

Godet, Laurence. "Broyage fin du talc par jets d'air opposés." Vandoeuvre-les-Nancy, INPL, 2001. http://www.theses.fr/2001INPL042N.

Full text

Abstract:

Le talc est un minerai largement employé dans les industries des peintures, des polymères, du papier, de la céramique et des cosmétiques. Extrait des carrières, il doit être ftagmenté par différents broyeurs pour atteindre la distribution de tailles désirée et adaptée à son utilisation. Afin d'obtenir des particules microniques d'une haute pureté dont la distribution de tailles est resserrée, le. Talc est broyé sans contamination par jets d'air opposés et classifié par un classificateur pneumatique dans des broyeurs de type Alpine AFG. La stabilité de la distribution de tailles des particules pendant le procédé de broyage peut être suivie en direct en installant un granulomètre laser en ligne. Dans le cas du talc, le montage du graoulomètre laser s'effectue en dérivation de façon à disperser les particules de talc pour pouvoir suivre l'évolution de la taille lors de l'établissement du régime permanent. Lors du broyage en continu du talc par jets d'air opposés avec une vitesse de classification fixée, l'augmentation du débit d'alimentation conduit inéluctablement à l'engorgement, ce qui se traduit par l'augmentation de la taille du produit et une instabilité du régime du broyeur. Pour chaque vitesse de rotation du classificateur, il existe un débit d'alimentation optimal et donc une masse retenue optimale dans le broyeur permettant d'obtenir la plus grande finesse du produit. Par ailleurs, des essais en mode discontinu permettent de déterminer l'influence de la masse retenue dans le broyeur sur le broyage et sur les paramètres de broyage du talc. Ainsi, à partir de la fonction de sélection obtenue, il est possible de calculer la fonction de broyage, indicatrice du fragmentation du talc. Enfin, les courbes de partage du classificateur pour les différentes vitesses de classification sont utilisées dans la modélisation globale du procédé de broyage-classification. Il semble que les chaînes de Markov conviennent pour modéliser le régime permanent du procédé.

APA, Harvard, Vancouver, ISO, and other styles

8

AOUN, SALIM. "Biocatalyses avec l' chymotrypsine et la chloroperoxydase en milieu micellaire et supportees sur talc : interet de l'adsorption sur le talc." Toulouse 3, 1998. http://www.theses.fr/1998TOU30132.

Full text

Abstract:

Au cours de cette etude, nous avons evalue les capacites catalytiques de deux enzymes, une protease l' chymotrypsine et une haloperoxydase la chloroperoxydase, en milieu micellaire et adsorbees sur des surfaces talqueuses. Au cours du premier chapitre, un rappel bibliographique a ete realise afin de mettre en evidence le role que peut jouer la structuration d'un milieu micellaire, a partir des reactivites de l' chymotrypsine et la chloroperoxydase. Nous avons decrit egalement l'influence de l'adsorption d'enzymes sur des supports solides, et compare les differents modes d'immobilisation. Un support original le talc sera presente. Dans le deuxieme chapitre, une etude de la reactivite de l' chymotrypsine a travers l'esterification d'un acide amine (n acetyl-l-tyrosine) dans un milieu micellaire constitue d'octanol-2, d'aot et de tampon a ete developpee. L'originalite de ce milieu se situe au niveau de la phase huileuse qui est en meme temps constituant de la microemulsion et nucleophile de la reaction enzymatique. Malheureusement, l'extension de ce processus d'esterification a la resolution d'alcools racemiques s'est averee negative. La chloroperxydase a ete egalement incorporee dans deux systemes micellaires differents afin d'evaluer ses capacites catalytiques. En absence d'ion halogenure, l'epoxydation d'alcenes n'est pas concluante car peu selective. Par contre, en presence d'ion bromure, l'halohydroxylation est quantitative et regioselective contrairement aux resultats obtenus en milieu aqueux. Enfin dans un dernier chapitre, nous avons etudie les interactions de la chloroperoxydase et de divers minerais de talc en vue d'obtenir des couples cpo-talc comme biocatalyseurs solides d'interet industriel. Nos divers travaux ont permis de montrer le role protecteur de certaines varietes de talc vis a vis de la chloroperoxydase. Une amelioration dans le processus d'halohydroxylation d'alcenes, notamment par l'accroissement des quantites de substrat et d'oxydant entrant en reaction, a ete proposee. Les mecanismes de ces biocatalyses, encore incertains, sont discutes et nos resultats s'inscrivent dans leur meilleure comprehension.

APA, Harvard, Vancouver, ISO, and other styles

9

Michot, Laurent. "Propriétés physicochimiques superficielles du talc et de la chlorite." Vandoeuvre-les-Nancy, INPL, 1990. http://www.theses.fr/1990INPL073N.

Full text

Abstract:

Après avoir défini les produits de départ, on étudie les propriétés texturales, superficielles, structurales et rhéologiques de produits obtenus après broyage humide en présence de divers adjuvants organiques ou minéraux. L'analyse statistique des résultats se révèle discriminante vis-à-vis du milieu de broyage et du brut de départ mais ne permet pas d'établir de modèles d'évolution des paramètres. Une étude de l'évolution de la charge superficielle à l'aide de la micro électrophorèse et de la spectrométrie IRTF en réflexion diffuse permet de proposer un modèle représentant la surface du talc. L'évolution des propriétés texturales et structurales en fonction de l'intensité du broyage est étudiée. On s'intéresse également aux propriétés d'application des différents échantillons comme charge dans un polypropylène. Par analyse statistique, on est alors capable de proposer un modèle reliant les caractéristiques d'application à un certain nombre de paramètres physicochimiques aisément mesurables en laboratoire. On utilise une large batterie de techniques d'absorption de différents gaz simples à la surface du talc et de la chlorite. On observe une très forte affinité de l'azote pour la surface du talc. L'étude par spectrométrie de masse des espèces dégagées lors du dégazage du talc tend à montrer la présence en surface d'espèces azotées fortement liées. L'ensemble de ces résultats permet de proposer une nouvelle explication à l'hydrophobie naturelle du talc

APA, Harvard, Vancouver, ISO, and other styles

10

Karrad, Sahnoune. "Mélanges composites PEHD/PS/Talc : application au recyclage." Montpellier 2, 1995. http://www.theses.fr/1995MON20036.

Full text

APA, Harvard, Vancouver, ISO, and other styles

More sources

Books on the topic "Talc"

1

Virta, Robert L. The talc industry--an overview. Washington, DC: U.S. Dept. of the Interior, Bureau of Mines, 1989.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

2

Howard, Daniel M. Mineral commodity report, talc and related minerals: 1986. Sacramento, Calif: California Dept. of Conservation, Division of Mines and Geology, 1986.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

3

Indian Bureau of Mines. Training, Mining Research, and Publication Division., ed. Monograph on talc, soapstone, and steatite. Nagpur: Controller-General, Indian Bureau of Mines, 1992.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

4

Howard, Daniel M. Mineral commodity report, talc and related minerals. Sacramento, Calif: California Dept. of Conservation, Division of Mines and Geology, 1986.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

5

Virta, Robert L. The talc industry: An overview. Washington, DC: Dept. of the Interior, 1989.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

6

Ferns, M. L. Investigations of talc in Oregon. Portland, Or: State of Oregon, Dept. of Geology and Mineral Industries, 1988.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

7

Geological Survey (U.S.), ed. Talc resources of the conterminous United States. [Menlo Park, CA]: U.S. Geological Survey, 1995.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

8

Montana. Department of State Lands. [Environmental assessment evaluating a proposal by Montana Talc Company for expanding its pit and waste dump areas]. Helena, Mont: The Dept., 1994.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

9

MacLean, M. Talc and pyrophyllite in British Columbia. Victoria, B.C., Canada: Mineral Resources Division, Geological Survey Branch, 1987.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

10

Bessinger, G. E. Talc-dolomite marbles of the Waldburg Formation, Oamites area: Mineralogy & use-related properties. [Windhoek] Namibia: Ministry of Mines and Energy, Geological Survey, 1998.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

More sources

Book chapters on the topic "Talc"

1

Flaris, Vicki. "Talc." In Functional Fillers for Plastics, 207–20. Weinheim, FRG: Wiley-VCH Verlag GmbH & Co. KGaA, 2005. http://dx.doi.org/10.1002/3527605096.ch12.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

Crowson, Phillip. "Talc." In Minerals Handbook 1992–93, 243–47. London: Palgrave Macmillan UK, 1992. http://dx.doi.org/10.1007/978-1-349-12564-7_38.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

Bährle-Rapp, Marina. "Talc." In Springer Lexikon Kosmetik und Körperpflege, 542. Berlin, Heidelberg: Springer Berlin Heidelberg, 2007. http://dx.doi.org/10.1007/978-3-540-71095-0_10284.

Full text

APA, Harvard, Vancouver, ISO, and other styles

4

Flaris, Vicki. "Talc." In Functional Fillers for Plastics, 225–39. Weinheim, Germany: Wiley-VCH Verlag GmbH & Co. KGaA, 2010. http://dx.doi.org/10.1002/9783527629848.ch12.

Full text

APA, Harvard, Vancouver, ISO, and other styles

5

Crowson, Phillip. "Talc." In Minerals Handbook 1994–95, 253–57. London: Palgrave Macmillan UK, 1994. http://dx.doi.org/10.1007/978-1-349-13431-1_40.

Full text

APA, Harvard, Vancouver, ISO, and other styles

6

Crowson, Phillip. "Talc." In Minerals Handbook 1996–97, 358–66. London: Palgrave Macmillan UK, 1996. http://dx.doi.org/10.1007/978-1-349-13793-0_42.

Full text

APA, Harvard, Vancouver, ISO, and other styles

7

Gooch, Jan W. "Talc." In Encyclopedic Dictionary of Polymers, 728. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_11534.

Full text

APA, Harvard, Vancouver, ISO, and other styles

8

Sanz, Joaquim, Oriol Tomasa, Nor Sidki-Rius, and Nor Sidki-Rius. "Talc." In Elements and Mineral Resources, 391–93. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-85889-6_98.

Full text

APA, Harvard, Vancouver, ISO, and other styles

9

Cardillo, Giuseppe, Luigi Carbone, Francesco Carleo, Anna Rita Forcione, and Massimo Martelli. "Talc Poudrage." In Minimally Invasive Thoracic and Cardiac Surgery, 197–203. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-11861-6_17.

Full text

APA, Harvard, Vancouver, ISO, and other styles

10

Gooch, Jan W. "Industrial Talc." In Encyclopedic Dictionary of Polymers, 386. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_6282.

Full text

APA, Harvard, Vancouver, ISO, and other styles

Conference papers on the topic "Talc"

1

Chang, Liqiong, Xiaojiang Chen, Ju Wang, Dingyi Fang, Chen Liu, Zhanyong Tang, and Weike Nie. "TaLc." In MobiCom'15: The 21th Annual International Conference on Mobile Computing and Networking. New York, NY, USA: ACM, 2015. http://dx.doi.org/10.1145/2799371.2799380.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

Sankarpandian, Kandha, Travis Little, and W. Keith Edwards. "Talc." In Proceeding of the twenty-sixth annual CHI conference. New York, New York, USA: ACM Press, 2008. http://dx.doi.org/10.1145/1357054.1357218.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

Enciso, J., L. Strang, and N. Mencer. "Troublesome Talc and Pulmonary Talc Granulomatosis." In American Thoracic Society 2021 International Conference, May 14-19, 2021 - San Diego, CA. American Thoracic Society, 2021. http://dx.doi.org/10.1164/ajrccm-conference.2021.203.1_meetingabstracts.a1372.

Full text

APA, Harvard, Vancouver, ISO, and other styles

4

Ha, N. T., H. Koneru, D. Tejwani, and S. Penupolu. "Talc Granulomatosis." In American Thoracic Society 2019 International Conference, May 17-22, 2019 - Dallas, TX. American Thoracic Society, 2019. http://dx.doi.org/10.1164/ajrccm-conference.2019.199.1_meetingabstracts.a6268.

Full text

APA, Harvard, Vancouver, ISO, and other styles

5

Rajagopal, R., and I. Berim. "Talc Granulomatosis." In American Thoracic Society 2020 International Conference, May 15-20, 2020 - Philadelphia, PA. American Thoracic Society, 2020. http://dx.doi.org/10.1164/ajrccm-conference.2020.201.1_meetingabstracts.a4958.

Full text

APA, Harvard, Vancouver, ISO, and other styles

6

Collins, G., and A. Krishnan. "Talc-Induced Acute Renal Failure After Talc Pleurodesis." In American Thoracic Society 2023 International Conference, May 19-24, 2023 - Washington, DC. American Thoracic Society, 2023. http://dx.doi.org/10.1164/ajrccm-conference.2023.207.1_meetingabstracts.a5018.

Full text

APA, Harvard, Vancouver, ISO, and other styles

7

Liu, Keyan, Wolfgang Stadlbauer, Gernot Zitzenbacher, Christian Paulik, and Christoph Burgstaller. "Effects of surface modification of talc on mechanical properties of polypropylene/talc composites." In PROCEEDINGS OF PPS-31: The 31st International Conference of the Polymer Processing Society – Conference Papers. AIP Publishing LLC, 2016. http://dx.doi.org/10.1063/1.4942323.

Full text

APA, Harvard, Vancouver, ISO, and other styles

8

Dionísio, Patrícia, Christine Costa, Salvato Feijó, Paula Monteiro, J. Rosal Gonçalves, and Cristina Bárbara. "Thoracoscopic talc poudrage in pneumothorax." In Annual Congress 2015. European Respiratory Society, 2015. http://dx.doi.org/10.1183/13993003.congress-2015.pa2504.

Full text

APA, Harvard, Vancouver, ISO, and other styles

9

Gatt, Yanika, Joanna Grech, James Farrugia, Christopher Zammit, and Stephen Montfort. "Success rate of talc pleurodesis." In ERS International Congress 2019 abstracts. European Respiratory Society, 2019. http://dx.doi.org/10.1183/13993003.congress-2019.pa3084.

Full text

APA, Harvard, Vancouver, ISO, and other styles

10

Фролов, Петр, Вера Ильина, Александр Завёрткин, Екатерина Климовская, and Александр Савицкий. "Karelian talc as a raw material: practical application and potential contribution to Russian mineral raw material reserves." In Mineralogical and technological appraisal of new types of mineral products. Petrozavodsk: Karelian Research Center of RAS, 2019. http://dx.doi.org/10.17076/tm13_6.

Full text

Abstract:

Talc is a unique natural material. Some talc-bearing rocks, e.g. soapstone, are also useful minerals. There are talc deposits on the Fennoscandian Shield. The main potential talc resources and reserves are in the Karelian Craton, which is part of the shield. Talc deposits in the Finnish extension of the craton are being mined in the Kainuu Schist Belt and soapstone deposits in the Suomussalmi-Kuhmo Greenstone Belt. The Karelian portion of the craton seems to be more promising for talc-bearing deposits, because favourable rock complexes of greenstone belts are more common there. The revival of Karelia’s economic, scientific and industrial potential for the prospecting, exploration, study, appraisal and exploitation of the talc deposits could provide an impetus to Russsia’s and Karelia’s industrial development on a new higher level.

APA, Harvard, Vancouver, ISO, and other styles

Reports on the topic "Talc"

1

Collings, R. K., and P. R. A. Andrews. Talc and pyrophyllite. Natural Resources Canada/CMSS/Information Management, 1990. http://dx.doi.org/10.4095/328628.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

Beltsios, Eleftherios, Georgios Mavrovounis, Antonis Adamou, and Nikolaos Panagiotopoulos. Talc pleurodesis in malignant pleural effusions: a systematic review and meta-analysis. INPLASY - International Platform of Registered Systematic Review and Meta-analysis Protocols, October 2020. http://dx.doi.org/10.37766/inplasy2020.10.0021.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

Vinjamuri, K. Talc-silicon glass-ceramic waste forms for immobilization of high- level calcined waste. Office of Scientific and Technical Information (OSTI), June 1993. http://dx.doi.org/10.2172/10187212.

Full text

APA, Harvard, Vancouver, ISO, and other styles

4

Lee, Janice, and Kelly Reddy-Best. Forest Tale. Ames: Iowa State University, Digital Repository, 2014. http://dx.doi.org/10.31274/itaa_proceedings-180814-1047.

Full text

APA, Harvard, Vancouver, ISO, and other styles

5

Sarrao, John. TAMU Talk. Office of Scientific and Technical Information (OSTI), November 2020. http://dx.doi.org/10.2172/1727404.

Full text

APA, Harvard, Vancouver, ISO, and other styles

6

Sarrao, John. DMMSC Talk. Office of Scientific and Technical Information (OSTI), January 2021. http://dx.doi.org/10.2172/1762723.

Full text

APA, Harvard, Vancouver, ISO, and other styles

7

Streb, Jorge M., and Gustavo Torrens. Meaningful Talk. Inter-American Development Bank, February 2015. http://dx.doi.org/10.18235/0011676.

Full text

Abstract:

This paper develops a semiotic-inferential model of verbal communication for incomplete information games: a language is seen as a set of conventional signs that point to types, and the credibility of a message depends on the strategic context. Formally, there is an encoding-decoding step where the receiver can understand the sender's message if and only if a common language is used, and an inferential step where the receiver may either trust the message's literal meaning or disregard it when updating priors. The epistemic requirement that information be transmitted through the literal meaning of the message uttered leads to an equilibrium concept distinct from a Perfect Bayesian Equilibrium, ruling out informative equilibria where language is not used in its ordinary sense. The paper also proposes a refinement by which the sender selects among equilibria if all sender types are willing to play the same equilibrium.

APA, Harvard, Vancouver, ISO, and other styles

8

Korber, Bette T. M. Talk: Why Vaccines? Office of Scientific and Technical Information (OSTI), April 2014. http://dx.doi.org/10.2172/1129055.

Full text

APA, Harvard, Vancouver, ISO, and other styles

9

O'Brien, K. The poet's tale. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 2000. http://dx.doi.org/10.4095/298665.

Full text

APA, Harvard, Vancouver, ISO, and other styles

10

Ruprah, Inder J., and Karl Alexander Melgarejo. Don't Talk to Me about Debt. Talk to Me about Growth. Inter-American Development Bank, September 2013. http://dx.doi.org/10.18235/0008430.

Full text

Abstract:

In this policy brief, we focus on the debates surrounding what has been called the "silent debt crisis" of the Caribbean. We discuss the level of debt at which the relation with economic growth turns from positive to negative. We also discuss, illustrated with simulations of the tradeoffs, how to reduce the debt level with policy options that complement fiscal austerity with debt restructuring, economic growth promotion, acceleration of inflation, and financial repression. Each policy option carries an advantage in terms of easing the required fiscal adjustment; however, each also presents downsides that could undermine such a benefit. There appears to be no gain without upfront pain.

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!