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(isosteric) adsorption heats [ 3 – 9 ]. Thus, both endothermic [ 3 – 7 ] and exothermic [ 7 – 9 ] heat effects of phenol adsorption on activated carbons were found with values varying from −42.4 [ 8 ] to 47.4 kJ mol −1 [ 4 ]. Direct calorimetric measurements

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Aerts, R. and S. Toet. 1997. Nutritional controls on carbon dioxide and methane emission from Carex -dominated peat soils. Soil Biol. Biochem. 29: 1683

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Abstract  

Methods for the determination of total carbon (TC), total nitrogen (TN), and total phosphorus (TP) in cattail (Typha domingensis) using cold and thermal neutron prompt gamma activation analysis (CNPGAA and TNPGAA) have been developed in the CNPGAA and TNPGAA facilities at the National Institute of Standards and Technology (NIST), and evaluated through the analysis of Standard Reference Materials (SRMs) in previous studies. There are major issues that impact the sensitivities of C, N and P using CNPGAA and TNPGAA including the effects of hydrogen content in samples, sample thickness and Compton scattering. However, interference from chlorine (Cl) in cattails has a major impact on the detection of P. This paper compares the effects of hydrogen content, sample thickness and Compton scattering on the sensitivities of C, N, and P between CNPGAA and TNPGAA and provides a resolution to the Cl interference on P in cattail.

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°C) The second example is oxygen activation studies on a copper impregnated carbon formed by the pyrolysis of a copper doped carboxy methyl cellulose sample in nitrogen at 400 °C [ 16 ]. In common with a number of

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Various carbon dust particles

Studies on thermal behaviour

Journal of Thermal Analysis and Calorimetry
Authors: Sonja Eichholz, Martin Lerch, Michael Heck, and Dirk Walter

dust particles to human health in more detail, state-of-the-art characterization methods are required. Here, electron microscopy and thermal analysis combined with gas analysis may be taken into account [ 2 , 3 ]. A comparison of diesel soot and carbon

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Orvosi Hetilap
Authors: Béla Sebők, Gábor Kiss, Péter János Szabó, Dániel Rigler, László Milán Molnár, Gábor Dobos, Ferenc Réti, Hajnal Szőcs, F. Árpád Joób, Kinga Körmöczi, and György Szabó

Szabó, G., Barabás, J., Németh, Z., et al.: Carbon-carbon implants in the oral and maxillofacial surgery – Part 1. [Karbon/karbon implantátumok az arc- és állcsontsebészetben – 1. rész.]. Orv. Hetil

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Introduction Palladium supported carbon materials (activated carbon, carbon fibres, carbon black, nanotubes) are highly suitable catalysts for several chemical and electrochemical reactions [ 1 – 13 ]. Relevant concerns

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Central European Geology
Authors: Leonel da Silveira Lobo Sternberg, Carlos Augusto Ramos e Silva, and Pablo Bezerra Dávalos

T.T.T. Hoa S.E. Bunn V.M. Fry 2004 Dominant sources of dietary carbon and nitrogen for shrimp

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Orvosi Hetilap
Authors: György Szabó, József Barabás, Zsolt Németh, and Sándor Bogdán

Blazewicz, M.: Carbon materials in the treatment of soft and hard tissue injuries. Eur. Cells Mater., 2001, 2 , 21–29. Blazewicz M

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Abstract  

Carbon encapsulated Au@Fe nanoparticles (NPs) were synthesized by the hydrothermal method, and the palladium NPs (12 nm) were immobilized on this hydroxyl-terminated support. The morphology, composition, content and magnetism of the samples were characterized. Compared with the commercial carbon-supported Pd catalyst, high catalytic activity, recyclability and selectivity were evaluated by the catalyst Pd/(C@(Au@Fe)) in the Heck reaction. Especially, in the Heck cross-coupling reactions of iodobenzene and methyl acrylate, the catalyst was reused 10 times without significant loss of activity. In addition, the catalyst was simply recycled by a magnetic field.

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