980 resultados para Homo-erectus
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Thèse--Faculté des lettres de Paris.
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Translation of: Homöopathische thierheilkunst.
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"Published by arrangement with Charles Scribner's sons."
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You will find scientific names used in this activity book. The scientific name will be in italics and will immediately follow the animal's common name. For example, the woodchuck's scientific name is Marmota monax. Your scientific name is Homo sapiens. Scientific names are used so that scientists from different parts of the world can communicate with one another and know that they are talking about the same species. These names are based on a Latin system.
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CONTENTS: --v. 1. Uarda. --v. 2. An Egyptian princess. --v. 3. The sisters. Joshua. --v. 4. Cleopatra. --v.5. The emperor. --v. 6. Homo sum. Serapis. --v.7. Arachne. --v. 8. The bride of the Nile. --v. 9. A thorny path. --v. 10. In the fire of the forge. --v. 11. Margery. --v. 12. Barbara Blomberg. --v. 13. A word, only a word. The burgomaster's wife. --v. 14. In the Blue Pike. A question. The elixir. --v. 15. The story of my life.
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Ms. notes in margins throughout volume and on 3 blank pages at end.
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El cine como fuente historiográfica es utilizado a partir de la "batalla" que dio Marc Ferro hacia el interior de Annales. Cuando era difícil que se aceptaran otras fuentes que no fueran las gráficas, este historiador logró abrirse camino hasta llegar a ser el director de Annales en los años '70. El discurso de la imagen o el discurso audiovisual representa con mayor verosimilitud lo que el discurso gráfico no alcanza a expresar. Sin embargo, la sinécdoque y la generalización se encuentran a mitad de camino en un juego representativo para complementarse a la hora de comprender y reconstruir el pasado. El aporte del cine puede tomarse como reflejo o representación social y también como una alternativa discursiva. En este sentido, Rosenstone con el apoyo de Hayden White y su análisis de la "historiofotía" son los que incursionan en esta nueva dimensión, esto es la narración audiovisual de la historia
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El cine como fuente historiográfica es utilizado a partir de la "batalla" que dio Marc Ferro hacia el interior de Annales. Cuando era difícil que se aceptaran otras fuentes que no fueran las gráficas, este historiador logró abrirse camino hasta llegar a ser el director de Annales en los años '70. El discurso de la imagen o el discurso audiovisual representa con mayor verosimilitud lo que el discurso gráfico no alcanza a expresar. Sin embargo, la sinécdoque y la generalización se encuentran a mitad de camino en un juego representativo para complementarse a la hora de comprender y reconstruir el pasado. El aporte del cine puede tomarse como reflejo o representación social y también como una alternativa discursiva. En este sentido, Rosenstone con el apoyo de Hayden White y su análisis de la "historiofotía" son los que incursionan en esta nueva dimensión, esto es la narración audiovisual de la historia
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Thesis (Ph.D.)--University of Washington, 2016-06
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A comprehensive study has been conducted to compare the adsorptions of alkali metals (including Li, Na, and K) on the basal plane of graphite by using molecular orbital theory calculations. All three metal atoms prefer to be adsorbed on the middle hollow site above a hexagonal aromatic ring. A novel phenomenon was observed, that is, Na, instead of Li or K, is the weakest among the three types of metal atoms in adsorption. The reason is that the SOMO (single occupied molecular orbital) of the Na atom is exactly at the middle point between the HOMO and the LUMO of the graphite layer in energy level. As a result, the SOMO of Na cannot form a stable interaction with either the HOMO or the LUMO of the graphite. On the other hand, the SOMO of Li and K can form a relatively stable interaction with either the HOMO or the LUMO of graphite. Why Li has a relatively stronger adsorption than K on graphite has also been interpreted on the basis of their molecular-orbital energy levels.
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Humans are primates. We have evolved from common ancestors and the evolution of the human body is becoming increasingly clear as the archeological record expands. But for most people the gap between humans and animals lies in the mind, not in the body. And minds do not fossilise. To reconstruct the evolution of mind, scholars have thus increasingly looked to our closest relatives for clues. Here I discuss four ways in which the study of primates may inform such reconstruction: fact-finding, phylogenetic reconstruction, analogy, and regression models. Knowledge about primates can help us bridge the gap. Extinction of our closest relatives, on the other hand, would not only deplete that source of information but also increase the apparent differences between animal and human minds. It is likely that we have a long history of displacing closely related species, including the other hominids, leading us to appear ever more unique.
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This study investigated the ability of a captive chimpanzee (Pan troglodytes) to recognise when he is being imitated. In the experimental condition of test 1a, an experimenter imitated the postures and behaviours of the chimpanzee as they were being displayed. In three control conditions the same experimenter exhibited (1) actions that were contingent on, but different from, the actions of the chimpanzee, (2) actions that were not contingent on, and different from, the actions of the chimpanzee, or (3) no action at all. The chimpanzee showed more "testing" sequences (i.e., systematically varying his actions while oriented to the imitating experimenter) and more repetitive behaviour when lie was being imitated, than when he was not. This finding was replicated 4 months later in test 1b. When the experimenter repeated the same actions she displayed in the experimental condition of test 1a back to the chimpanzee in test 2, these actions now did not elicit those same testing sequences or repetitive behaviours. However, a live imitation condition did. Together these results provide the first evidence of imitation recognition in a nonhuman animal.
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A new approach to enantiomerically pure 2,8-dialkyl-1,7-dioxaspiro[5.5]undecanes and 2,7-dialkyl-1,6-dioxaspiro [4.5] decanes is described and utilizes enantiomerically pure homopropargylic alcohols obtained from lithium acetylide opening of enantiomerically pure epoxides, which are, in turn, acquired by hydrolytic kinetic resolution of the corresponding racemic epoxides. Alkyne carboxylation and conversion to the Weinreb amide may be followed by triple-bond manipulation prior to reaction with a second alkynyllithium derived from a homo- or propargylic alcohol. In this way, the two ring components of the spiroacetal are individually constructed, with deprotection and cyclization affording the spiroacetal. The procedure is illustrated by acquisition of (2S,5R,7S) and (2R,5R,7S)-2-n-butyl-7-methyl-1,6-dioxaspiro[4.5]-decanes (1), (2S,6R,8S)-2-methyl-8-n-pentyl-1,7-dioxaspiro[5.5]undecane (2), and (2S,6R,8S)-2-methyl-8-n-propyl-1,7-dioxaspiro[5.5]undecane (3). The widely distributed insect component, (2S,6R,8S)-2,8-dimethyl-1,7-dioxaspiro[5.5]undecane (4), was acquired by linking two identical alkyne precursors via ethyl formate. In addition, [H-2(4)]-regioisomers, 10,10,11,11-[H-2(4)] and 4,4,5,5-[H-2(4)] of 3 and 4,4,5,5-[H-2(4)]-4, were acquired by triple-bond deuteration, using deuterium gas and Wilkinson's catalyst. This alkyne-based approach is, in principle, applicable to more complex spiroacetal systems not only by use of more elaborate alkynes but also by triple-bond functionalization during the general sequence.
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The nitrogen substitution in carbon materials is investigated theoretically using the density functional theory method. Our calculations show that nitrogen substitution decreases the hydrogen adsorption energy if hydrogen atoms are adsorbed on both nitrogen atoms and the neighboring carbon atoms. On the contrary, the hydrogen adsorption energy can be increased if hydrogen atoms are adsorbed only on the neighboring carbon atoms. The reason can be explained by the electronic structures analysis of N-substituted graphene sheets. Nitrogen substitution reduces the pi electron conjugation and increases the HOMO energy of a graphene sheet, and the nitrogen atom is not stable due to its 3-valent character. This raises an interesting research topic on the optimization of the N-substitution degree, and is important to many applications such as hydrogen storage and the tokamaks device. The electronic structure studies also explain well why nitrogen substitution increases the capacitance but decreases the electron conductivity of carbon electrodes as was experimentally observed in our experiments on the supercapacitor.
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The present work documents how the logic of a model's demonstration and the communicative cues that the model provides interact with age to influence how children engage in social learning. Children at ages 12, 18, and 24 months (n = 204) watched a model open a series of boxes. Twelve-month-old subjects only copied the specific actions of the model when they were given a logical reason to do so- otherwise, they focused on reproducing the outcome of the demonstrated actions. Eighteen-month-old subjects focused on copying the outcome when the model was aloof. When the model acted socially, the subjects were as likely to focus on copying actions as outcomes, irrespective of the apparent logic of the model's behavior. Finally, 24-month-old subjects predominantly focused on copying the model's specific actions. However, they were less likely to produce the modeled outcome when the model acted nonsocially.