186,313 research outputs found
Reconocimiento del sitio Varejonal, municipio de Jiquipilas, Chiapas. Anales del Instituto Nacional de Antropología e Historia. Num. 49 Tomo I (1967-1968) Séptima Época (1967-1976)
No full textAgrinier, P. 1964 The Archaeological Burials at Chiapa de Corzo and their Furniture. New World Archaeological Foundation, Pub. No. 12. Provo, Utah.Covarrudias, M. 1957 Indian Art of Mexico and Central America. New York.De la Peña, M. 1951 Chiapas Económico, vol. III. Tuxtla Gutiérrez, Chiapas.Gourou, P. 1953 The Tropical World. London.Lowe, G. W. y Agrinier, P. 1960 Mound l. Chiapa de Corzo, Chiapas, Mexico. New World Archaeological Foundation, Pub. No. 8. Provo, Utah.Lowe, G. W. y Mason, J. A. 1965 Archaeological Survey of the Chiapas Coast, Highlands and Upper Grijalva Basin. Handbook of Middle American Indians, vol. 2. London.Morley, S. G. 1956 The Ancient Maya. Stanford, California.Navarrete, C. 1966 Excavaciones en la Presa Netzahualcóyotl, Mal Paso, Chiapas. Boletín del INAH, No. 24. México.Peterson, F. 1961 Lost Cities of Chiapas. Science of Man, vol. 1, No. 2. Mentone, California.Satterthwaite, L., Jr. 1944 Piedras Negras Archaeology: Architecture. Philadelphia, Pa
Nuevos casos de mutilaciones dentarias procedentes de Chiapas, México.. Anales del Instituto Nacional de Antropología e Historia. Num. 44 Tomo XV (1962) Sexta Época (1939-1966)
No full textAdams, R. M. Changing Patterns of Territorial Organization in the Central Highlands of Chiapas, México. American Antiquity, Vol. 26, No. 3. Salt Lake City, 1961, pp. 341-60.Agrinier, P. Burials of Chiapa de Corzo, Chiapas, México, 1962 a. En preparación.Agrinier, P. Excavations at El Mirador, Municipio of Jiquipilas, Chiapas, México. 1962 b. En preparación.Cornwall, I. W. Bones for the Archaeologist. New York. 1956.Lowe, G. W. Mound 5 and Minor Excavations, Chiapa de Corzo, Chiapas, México. Papers of the New World Archaeological Foundation. No. 12. Provo. 1962 a.Lowe, G. W. Algunos Resultados de la Temporada 1961 en Chiapa de Corzo, Chiapas. Estudios de Cultura Maya. Vol. 2. UNAM. México, 1962 b.Lowe, G. W. y Agrinier, P. Mound I, Chiapa de Corzo, Chiapas, México. Papers of the New World Archaeological Foundation. No. 8. Provo. 1960.Mason, J. A. Mound 12, Chiapa de Corzo. Chiapas, México. Papers of the New World Archaeological Foundation, No. 9. Provo. 1960.Ricketson, O. G. Jr. y Riketson, E. B. Uaxactun, Guatemala, Group E. 1926-1931. Pub. 477, Carnegie lnstitution of Washington. Washington, 1937.Romero, J. Mutilaciones Dentarias Prehispánicas de México y América en General. Serie Investigaciones,3, Instituto Nacional de Antropología e Historia. México, 1958.Romero, J. Últimos Hallazgos de Mutilaciones Dentarias en México. Anales del Instituto Nacional de Antropología e Historia, T. XII. México, 1960, pp. 151-215.Smith, A. L. Uaxactun, Guatemala: Excavations of 1931-1937. Pub. 588, Carnegie Institution of Washington. Washington, 1950
Water–rock interactions during a CO2 injection field-test: implications on host rock dissolution and alteration effects
No full textWe investigated the nature and rates of in-situ CO2–fluid–rock reactions during an aqueous phase CO2 injection test. Two push–pull test experiments were performed at the Lamont–Doherty Earth Observatory test site (New York, USA): a non reactive control test without CO2 addition and a reactive test with CO2 equilibrated with the injected solution at a partial pressure of 1.105 Pa. The injected solution contained chemical and isotopic conservative tracers (NaCl and 18O) and was injected in an isolated and permeable interval at approximately 250 m depth. The injection interval was located at the contact zone between the Palisades sill (chilled dolerite) and the underlying metamorphic Newark Basin sediments and the injected solution incubated within this interval for roughly 3 weeks. Physico-chemical parameters were measured on the surface (pH, temperature, electrical conductivity) and water samples were collected for chemical (Dissolved Inorganic Carbon — DIC, major ions) as well as for isotopic (?13CDIC, ?18O) analyses.For the control test, post-injection chemical and isotopic compositions of recovered water samples display mixing between the background water and the injected solution. For the reactive CO2 test, observed ?13CDIC and DIC both increase, and enrichment in Ca2+, Mg2+, K+ allow for quantification of the chemical pathways through which aqueous CO2 and subsequent H2CO3 were converted into HCO3?. Dissolution of carbonate minerals was the dominant H2CO3 neutralization process (? 52 ± 7%), followed by cation exchange and/or dissolution of silicate minerals (? 45 ± 10%, for both processes), and to a minor extent, mixing of the injected solution with the formation water (? 3 ± 1%). The results confirm the rapid dissolution kinetics of carbonate minerals compared to those of basic silicate minerals. However, our results remain marked by uncertainties due to the natural variability of the background water composition, in mass balance calculations. These experiments imply that the use of accurate DIC measurements can quantify the relative contribution of CO2–fluid–rock reactions and evaluate the geochemical trapping potential for CO2 storage in reactive reservoir environments
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
CO2 ionic trapping at meta-sedimentary aquifer, following a CO2 injection push-pull test
No full textIn order to study CO2-water-rock reactions relative to effectiveness of CO2 geological storage, small-scale CO2 injection experiments were performed, as single well push-pull tests, at the Lamont Doherty Earth Observatory test well site (New-York, USA). The injection interval was located at the contact zone between the chilled dolerite and the underlying metamorphosed sedimentary rocks. The variations of post-injection chemical and isotopic characteristics of retrieved water samples (major ions, DIC, 13CDIC) underline the CO2 reactivity in the aquifer and allow to identify reactions of the dissolved CO2 with the surrounding rocks, mainly the dissolution of carbonate minerals and complementary cation exchange
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Appropriate Similarity Measures for Author Cocitation Analysis
No full textWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
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