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954 results on '"Bennett, J. M."'

2. Systematic trends in the substitution mechanisms of minor elements in cassiterite.

Author

Bennett, J. M., Kemp, A. I. S., Hagemann, S. G., Fiorentini, M. L., and Roberts, M. P.

Abstract

Abstract\nKEY POINTSA dataset of 4751 EPMA point analyses on cassiterite crystals from 18 localities spanning a range of different granite-related Sn-bearing mineral systems was investigated and compared with thermodynamic considerations from speciation and lattice strain models. The existence of previously inferred charge balanced coupled substitution mechanisms of Fe3+, Fe2+, Mn2+, Nb5+, Ta5+ and W6+ for Sn4+ are confirmed. The homo­valent substitution of Sn4+ by Ti4+ and Zr4+ is also confirmed, and the first evidence for homovalent substitution of Nb4+ and W4+ in natural cassiterite is presented. The preferred substitution mechanisms for Ti, Fe, Mn, Nb, Ta, W and Zr vary systematically as a function of the mineralising environment. Cassiterite precipitated from silicate liquid dominated systems (such as in pegmatites) primarily display a coupled Fe–(Nb,Ta) substitution mechanism with a 1:2 stoichiometry, whereas cassiterite precipitated in systems dominated by autometasomatic processes (such as greisens) more closely follow a 1:1 stoichiometry, as well as increased levels of Ti. Cassiterite precipitated solely from hydrothermal fluids (such as Sn–(W) quartz vein systems) exhibit the highest Ti concentrations, with lower contents of Fe–(Nb,Ta) coupled substitutions, instead displaying a switch to the incorporation of Fe3+ via FeO.OH stoichiometry. Hydrothermally precipitated cassiterite from skarn systems display the highest Fe3+ contents, and the lowest Nb, Ta and Ti contents. These systematic changes define a continuous trend in a Ti–(Fe + Mn)–(Nb,Ta) ternary diagram, allowing for classification of the primary source of alluvial cassiterite.We confirm charge balanced coupled substitution mechanisms for Fe3+, Fe2+, Mn2+, Nb5+, Ta5+ and W6+, and homovalent substitution of Ti4+ and Zr4+, for Sn4+ in cassiterite.We provide the first stoichiometric evidence for Nb4+ and W4+ in natural cassiterite.We show that the concentration of these elements in cassiterite varies systematically and can be exploited for paragenetic classification. [ABSTRACT FROM AUTHOR]

Published
2024
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3. Some special solutions of the Schroedinger equation

Author

Barcelo, J. A., Bennett, J. M., Carbery, A., Ruiz, A., and Vilela, M. C.

Subjects
Mathematics - Analysis of PDEs, 42B10
Abstract

We describe a certain "self-similar" family of solutions to the free Schroedinger equation in all dimensions, and derive some consequences of such solutions for two specific problems., Comment: 10 pages, 2 figures

Published
2006

6. Zeolite Structure Determination from X-Ray Diffraction

Author

van Koningsveld, H., Bennett, J. M., Karge, Hellmut G., editor, Weitkamp, Jens, editor, Baerlocher, C., editor, Bennett, J. M., editor, Depmeier, W., editor, Fitch, A. N., editor, Jobic, H., editor, van Koningsveld, H., editor, Meier, W. M., editor, Pfenninger, A., editor, and Terasaki, O., editor

Published
1999
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8. Validation of WHO classification-based Prognostic Scoring System (WPSS) for myelodysplastic syndromes and comparison with the revised International Prognostic Scoring System (IPSS-R). A study of the International Working Group for Prognosis in Myelodysplasia (IWG-PM)

Author

Della Porta, M G, Tuechler, H, Malcovati, L, Schanz, J, Sanz, G, Garcia-Manero, G, Solé, F, Bennett, J M, Bowen, D, Fenaux, P, Dreyfus, F, Kantarjian, H, Kuendgen, A, Levis, A, Cermak, J, Fonatsch, C, Le Beau, M M, Slovak, M L, Krieger, O, Luebbert, M, Maciejewski, J, Magalhaes, S M M, Miyazaki, Y, Pfeilstöcker, M, Sekeres, M A, Sperr, W R, Stauder, R, Tauro, S, Valent, P, Vallespi, T, van de Loosdrecht, A A, Germing, U, Haase, D, Greenberg, P L, and Cazzola, M

Published
2015
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11. Cytomorphology and Clinical Outcome in 80 Patients with AML M4Eo and Inversion 16

Author

Haferlach, T., Löffler, H., Bennett, J. M., Andersen, J. W., Gassmann, W., Schoch, R., Paietta, E., Cassileth, P. A., Fonatsch, C., Schoch, C., Schlegelberger, B., Becher, R., Thiel, E., Ludwig, W.-D., Sauerland, M. C., Heinecke, A., Büchner, T., Büchner, T., editor, Schellong, G., editor, Ritter, J., editor, Creutzig, U., editor, Hiddemann, W., editor, and Wörmann, B., editor

Published
1997
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12. Incidence of Infections in Adult Patients (> 55 Years) with Acute Myeloid Leukemia Treated with Yeast-Derived GM-CSF (Sargramostim): Results of a Double-Blind Prospective Study by the Eastern Cooperative Oncology Group

Author

Rowe, J. M., Rubin, A., Mazza, J. J., Bennett, J. M., Paietta, E., Anderson, J. W., Ghalie, R., Wiernick, P. H., Hiddemann, W., editor, Plunkett, W., editor, Büchner, T., editor, Ritter, J., editor, Wörmann, B., editor, Keating, M. J., editor, and Creutzig, U., editor

Published
1996
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13. Acute Myeloid Leukemia with Translocation (8;21). Cytomorphology, Dysplasia and Prognostic Factors in 41 Cases

Author

AML Cooperative Group and ECOG, Haferlach, T., Bennett, J. M., Löffler, H., Gassmann, W., Andersen, J., Tuzuner, N., Cassileth, P. A., Fonatsch, C., Schlegelberger, B., Thiel, E., Ludwig, W.-D., Sauerland, M. C., Heinecke, A., Büchner, Th., Hiddemann, W., editor, Plunkett, W., editor, Büchner, T., editor, Ritter, J., editor, Wörmann, B., editor, Keating, M. J., editor, and Creutzig, U., editor

Published
1996
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16. Roles of International Organisations: University Aid Programs for the Transfer of Computer Technology.

Author

Bennett, J. M.

Abstract

The discussion of the contribution Australian universities might make in introducing computer technology to the developing countries draws upon over 20 years of experience with students from Southeast Asia. The results of several studies of the performances of these students both while in Australia and after returning to their own countries have become available. The problem discussed by these students are as relevant to electronic data processing training as to training in other technical fields. Thus the main relevant points are summarized here. The figures show that Asian students do not perform well in comparison with Australians. Possible reasons for this are: language problems, the emphasis on rote learning among Asian students, and differences in cultural backgrounds. On returning home, students are faced with difficulties in trying to exercise their acquired skills because of: changes in the governments' policy and lack of recognition of Australian qualifications. Desirable mechanisms of training include: fostering paired university departments, provision of computing equipment for training, advice in setting up sub-graduate and undergraduate training programs, assistance in providing technical literature and provision of computer time to universities without computers. (NH)

Published
1969

23. Validation of WHO classification-based Prognostic Scoring System (WPSS) for myelodysplastic syndromes and comparison with the revised International Prognostic Scoring System (IPSS-R). A study of the International Working Group for Prognosis in Myelodysplasia (IWG-PM)

Author

Porta, Della MG, Tuechler, H, Malcovati, L, Schanz, J, Sanz, G, Garcia-Manero, G, Solé, F, Bennett, J M, Bowen, D, Fenaux, P, Dreyfus, F, Kantarjian, H, Kuendgen, A, Levis, A, Cermak, J, Fonatsch, C, Le Beau, M M, Slovak, M L, Krieger, O, Luebbert, M, Maciejewski, J, Magalhaes, S MM, Miyazaki, Y, Pfeilstöcker, M, Sekeres, M A, Sperr, W R, Stauder, R, Tauro, S, Valent, P, Vallespi, T, van de Loosdrecht, A A, Germing, U, Haase, D, Greenberg, P L, and Cazzola, M

Published
2015
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27. Monosomal karyotype in MDS: explaining the poor prognosis?

Author

Schanz, J, Tüchler, H, Solé, F, Mallo, M, Luño, E, Cervera, J, Grau, J, Hildebrandt, B, Slovak, M L, Ohyashiki, K, Steidl, C, Fonatsch, C, Pfeilstöcker, M, Nösslinger, T, Valent, P, Giagounidis, A, Aul, C, Lübbert, M, Stauder, R, Krieger, O, Le Beau, M M, Bennett, J M, Greenberg, P, Germing, U, and Haase, D

Published
2013
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37. Characterization and prognostic significance of cytogenetically unrelated clones in myelodysplastic syndromes and acute myeloid leukemia: V68

Author

Schanz, J., Keels, S., Haferlach, C., Bardi, G., Gourgouveli, E., Slovak, M. L., Johansson, B., Ohyashiki, K., Solé, F., Eclache, V., Wimzal, F., Pfeilstöcker, M., Nösslinger, T., Fonatsch, C., Lübbert, M., Giagounidis, A., Stauder, R., Krieger, O., Prescher, G., Hildebrandt, B., Greenberg, P., LeBeau, M. M., Bennett, J. M., Germing, U., and Haase, D.

Published
2011

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