905 resultados para Human ecology - History


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CONTENTS.--The nature and scope of the inquiry.--The geographical factor in history.--The human factor in history.--Method and results.

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Slip tipped in over imprint reads: This volume is sold in England by George Bell and Sons ... London.

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v. 1. The anatomy of the bones, muscles, and joints -- v. 2. The anatomy of the heart and arteries -- v. 3. The nervous system / by Charles Bell -- v. 4. The anatomy of the viscera of the abdomen, the parts in the male and female pelvis, and the lymphatic system / by Charles Bell.

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The English ed., on which the American is based, was transl. by W.H. Madden.--cf. Editor's pref.

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v. 1. Bones. Muscles. Joints -- v. 2. Viscera. Senses -- v. 3. Blood-vessels. Absorbents. Nerves. Glands. Dissecting the different parts of the human body. Glossary. Index -- v. 4. Comparative anatomy. -- v. [5] Plates.

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v. 1. Bones, muscles and joints. 4th ed. 1808 -- v. 2. Heart and arteries. 3rd ed. corr. 1808 -- v. 3. Nervous system, with plates / by Charles Bell. 1803 -- v. 4. Viscera of the abdomen, the parts in the male and female pelvis, and the lymphatic system / by Charles Bell. 1804.

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Earlier eds. have title: The anatomy of the human body.

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Aim: The aim of this study was to characterize the bacterial community adhering to the mucosa of the terminal ileum, and proximal and distal colon of the human digestive tract. Methods and Results: Pinch samples of the terminal ileum, proximal and distal colon were taken from a healthy 35-year-old, and a 68-year-old subject with mild diverticulosis. The 16S rDNA genes were amplified using a low number of PCR cycles, cloned, and sequenced. In total, 361 sequences were obtained comprising 70 operational taxonomic units (OTU), with a calculated coverage of 82.6%. Twenty-three per cent of OTU were common to the terminal ileum, proximal colon and distal colon, but 14% OTU were only found in the terminal ileum, and 43% were only associated with the proximal or distal colon. The most frequently represented clones were from the Clostridium group XIVa (24.7%), and the Bacteroidetes (Cytophaga-Flavobacteria-Bacteroides ) cluster (27.7%). Conclusion: Comparison of 16S rDNA clone libraries of the hindgut across mammalian species confirms that the distribution of phylogenetic groups is similar irrespective of the host species. Lesser site-related differences within groups or clusters of organisms, are probable. Significance and Impact: This study provides further evidence of the distribution of the bacteria on the mucosal surfaces of the human hindgut. Data contribute to the benchmarking of the microbial composition of the human digestive tract.