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Abstract  

The degree of homogeneity is normally assessed by the variability of the results of independent analyses of several (e.g., 15) normal-scale replicates. Large sample instrumental neutron activation analysis (LS-INAA) with a collimated Ge detector allows inspecting the degree of homogeneity of the initial batch material, using a kilogram-size sample. The test is based on the spatial distributions of induced radioactivity. Such test was applied to samples of Brazilian whole (green) coffee beans (Coffea arabica and Coffea canephora) of approximately 1 kg in the frame of development of a coffee reference material. Results indicated that the material do not contain significant element composition inhomogeneities between batches of approximately 30–50 g, masses typically forming the starting base of a reference material.

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Journal of Thermal Analysis and Calorimetry
Authors: I. Klimova, T. Kaljuvee, L. Türn, V. Bender, A. Trikkel, and R. Kuusik

) 2NH 4 NO 3 + CaCO 3 ⇆CaO 2 + CO 2 (g) + 2.5NO 2 (g) + 0.75N 2 (g) + 4H 2 (g) (14) 2NH 4 NO 3 + CaCO 3 ⇆ CaO 2 + CO 2 (g) + 2NO 2 (g) + N 2 (g) + H 2 O(g) + 3H 2 (g) (15

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Journal of Thermal Analysis and Calorimetry
Authors: M. C. D. Silva, L. M. da Silva, N. A. Santos, M. M. Conceição, A. G. Souza, and A. O. dos Santos

, VFS , Pauly , J , Daridon , JL . Measurement and modeling of biodiesel cold-flow properties . Energy Fuels . 2010 ; 24 : 2667 – 2674 . 10.1021/ef901427g . 15. Santos , NA

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Journal of Thermal Analysis and Calorimetry
Authors: F. T. G. Vieira, A. L. M. Oliveira, D. S. Melo, S. J. G. Lima, E. Longo, A. S. Maia, A. G. Souza, and I. M. G. Santos

unpaired electrons only spin-forbidden transitions from its ground state, 6 A 1g (S), occurs. Bands are expected at about 12,500–14,000 cm −1 6 A 1g → 4 T 1g ( 4 G), 15,500–18,000 cm −1 6 A 1g → 4 T 2g ( 4 G), 20,000–24,000 cm −1 6 A 1g → 4 A 1g 4

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study about propane ammoxidation to acrylonitrile with an alumina-supported Sb–V–O catalyst . Ind Eng Chem Res 45 : 4537 – 4543 10.1021/ie051000g . 15. Zanthoff , HW , Schaefer , S

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Journal of Thermal Analysis and Calorimetry
Authors: Cheng-Li Jiao, Li-Fang Song, Chun-Hong Jiang, Jian Zhang, Xiao-Liang Si, Shu-Jun Qiu, Shuang Wang, Li-Xian Sun, Fen Xu, Fen Li, and Ji-Jun Zhao

.172 g, 1.5 mmol) in 10 mL H 2 O was heated with stirring until the solution was clarifying and the pH value was around 3. After 2 days, crystalline Mn 3 (HEDTA) 2 ·10H 2 O was obtained by evaporation of the resulting solution. After filtration, the

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Journal of Thermal Analysis and Calorimetry
Authors: Kaewta Kaewtatip, Varaporn Tanrattanakul, Katalin Mészáros Szécsényi, Jelena Pavličević, and Jaroslava Budinski-Simendić

difference in DSC curves recorded to 250 °C without and with a thermal pretreatment of this sample is presented in Fig. 4 . The solid line corresponds to DSC curve of the grafted sample ( G , % = 15%) without thermal pretreatment. The broad peak refers to a

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from a different area of novel techniques [ 14 ] with 301 citations (becoming widely functional, e.g., [ 15 ]), but encompassing only third time of its comparable quotation existence. Certainly we should not forget another in that time inventive

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Journal of Thermal Analysis and Calorimetry
Authors: Mark S. Romano, Sanjeev Gambhir, Joselito M. Razal, Adrian Gestos, Gordon G. Wallace, and Jun Chen

200,000 cm 2 /V s and specific surface area of 2,630 m 2 /g [ 15 , 16 ]. Graphene was first fabricated by chemical vapour deposition in the 1970s [ 17 ] but it was not until recently that real progress was made in this area. Novoselov et al. [ 18

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.51 g (15.4% yield) of 2,2,4,4,5,5-hexaphenyl-1,3-dioxa-2-silole as a white solid: m.p. 61 °C (DSC) [lit. [ 25 ] 59.5–61 °C], decomposition 156 °C (TG); 1 H NMR (δ, CDCl 3 ) 6.89–7.95 (m, aromatic protons); 13 C NMR (δ, CDCl 3 ) 91.55 (benzylic carbon

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