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Objectives: To compare the tubal sterilization trough subumbilical incision performed with local anesthesia versus spinal anesthesia in the postpartum period. Methods: We perform 196 tubal sterilization procedures after a vaginal delivery. The study group 1 (local anesthesia) included 136 women and the study group 2 (spinal anesthesia) 60 women. Results: The study showed no...

Spatial and orientation patterns of experimental stone tool refits

Freehand and bipolar experimental knapping of quartzite from Olduvai Gorge in Tanzania is used to conduct spatial analysis of artefact distributions using GIS techniques, and to investigate the orientation of refit lines using circular histograms. The aim of our study is to discern patterns that can be applied to the archaeological record in two domains, namely the identification...

Early Pleistocene archaeological occurrences at the Feiliang site, and the archaeology of human origins in the Nihewan Basin, North China

. Investigation: Fei Xie, Ying Guan. Writing ? review & editing: Shuwen Pei, Chenglong Deng, Ignacio de la Torre. 30 / 35 6. Bar-Yosef O, Belfer-Cohen A. From Africa to Eurasia?Early dispersals. Quatern Int. 2001

Nut Cracking Tools Used by Captive Chimpanzees (Pan troglodytes) and Their Comparison with Early Stone Age Percussive Artefacts from Olduvai Gorge

We present the results of a series of experiments at the Kumamoto Sanctuary in Japan, in which captive chimpanzees (Pan troglodytes) performed several nut cracking sessions using raw materials from Olduvai Gorge, Tanzania. We examined captive chimpanzee pounding tools using a combination of technological analysis, use-wear distribution, and micro-wear analysis. Our results show...

First GIS Analysis of Modern Stone Tools Used by Wild Chimpanzees (Pan troglodytes verus) in Bossou, Guinea, West Africa

Stone tool use by wild chimpanzees of West Africa offers a unique opportunity to explore the evolutionary roots of technology during human evolution. However, detailed analyses of chimpanzee stone artifacts are still lacking, thus precluding a comparison with the earliest archaeological record. This paper presents the first systematic study of stone tools used by wild chimpanzees...

The origins of stone tool technology in Africa: a historical perspective

Ignacio de la Torre 0 1 0 One contribution of 26 to a Discussion Meeting Issue 'Culture evolves' 1 Institute of Archaeology, University College London , 31 - 34 Gordon Square, London WC1H 0PY , UK

The Origins of the Acheulean at Olduvai Gorge (Tanzania): A New Paleoanthropological Project in East Africa

The disappearance of the earliest human culture, the Oldowan, and its substitution by a new technology, the Acheulean, is one of the main topics in modern Paleoanthropology. Recent research has established that the Acheulean emerged originally in East Africa around 1.7–1.6 million years ago, and from that area expanded across the rest of Africa, Europe and parts of Asia. Despite...

Palaeolithic research at the Institute of Archaeology

and Norah Moloney joined the staff of the Institute of Archaeology in 1990 and 1994 respectively, and Dietrich Stout and Ignacio de la Torre in 2005. Each are involved in research relating to human ... Fig. 2) , where a simple technology is Pleistocene (Ignacio de la Torre) employed, and bed II, where the prepared? Cooling temperatures affecting Europe at land over 1000 m core, or Levallois, technique