Pore evolution mechanisms during directed energy deposition additive manufacturing

Autor: Kai Zhang, Yunhui Chen, Sebastian Marussi, Xianqiang Fan, Maureen Fitzpatrick, Shishira Bhagavath, Marta Majkut, Bratislav Lukic, Kudakwashe Jakata, Alexander Rack, Martyn A. Jones, Junji Shinjo, Chinnapat Panwisawas, Chu Lun Alex Leung, Peter D. Lee

Publikováno v: Nature Communications, Vol 15, Iss 1, Pp 1-14 (2024)

Abstract Porosity in directed energy deposition (DED) deteriorates mechanical performances of components, limiting safety-critical applications. However, how pores arise and evolve in DED remains unclear. Here, we reveal pore evolution mechanisms dur

Externí odkaz: https://doaj.org/article/8f0bdde7aa5d434b8999bd7fd9def10a

Pre- and post-fragmentation conditions during the 1999 Vulcanian activity at Guagua Pichincha volcano (Ecuador) revealed by textural analysis of breadcrust bombs

Autor: Mathieu Colombier, Heather Wright, Michael Manga, Benjamin Bernard, Pablo Samaniego, Francisco Cáceres, Jeremie Vasseur, Kudakwashe Jakata, Donald Dingwell

Breadcrust bombs are typical products of Vulcanian eruptions. The exteriors of such pyroclasts experience rapid quenching after fragmentation and hence preserve a dense crust with no or limited textural change. The core of breadcrust bombs can instea

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c1451a73fd336153d3a335a28e58933a
https://doi.org/10.5194/egusphere-egu23-11641

The atlas of StW 573 and the late emergence of human-like head mobility and brain metabolism

Autor: Luc Van Hoorebeke, Robin H. Crompton, Laurent Bruxelles, Ronald J. Clarke, Amélie Beaudet, Kathleen Kuman, Kudakwashe Jakata, Travis Rayne Pickering, Lunga Bam, Dominic Stratford, Jason L. Heaton, Kristian J. Carlson, Tea Jashashvili

Publikováno v: Scientific Reports, Vol 10, Iss 1, Pp 1-13 (2020)
Scientific Reports
Scientific Reports, Nature Publishing Group, 2020, 10, pp.4285. ⟨10.1038/s41598-020-60837-2⟩
SCIENTIFIC REPORTS

Functional morphology of the atlas reflects multiple aspects of an organism’s biology. More specifically, its shape indicates patterns of head mobility, while the size of its vascular foramina reflects blood flow to the brain. Anatomy and function

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ec34b1eeefa9b2b51b3152993c684fb7
http://link.springer.com/article/10.1038/s41598-020-60837-2

Cochlear shape distinguishes southern African early hominin taxa with unique auditory ecologies

Autor: José Braga, Kudakwashe Jakata, B. Zipfel, John Francis Thackeray, Veronika A. Zimmer, M. Macé, Frederick E. Grine, Y. Feunteun, Chafik Samir, Bernard Wood, A. Fradi

Publikováno v: Scientific Reports
Scientific Reports, 2021, 11 (1), pp.17018. ⟨10.1038/s41598-021-96543-w⟩
Scientific Reports, Vol 11, Iss 1, Pp 1-10 (2021)

Insights into potential differences among the bony labyrinths of Plio-Pleistocene hominins may inform their evolutionary histories and sensory ecologies. We use four recently-discovered bony labyrinths from the site of Kromdraai to significantly expa

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f12d7a51d9073547d2a72b3ee31eb8db
https://hal.science/hal-04061560

Osteopathology and insect traces in the Australopithecus africanus skeleton StW 431

Autor: Edward J. Odes, Alexander H. Parkinson, Patrick S. Randolph-Quinney, Bernhard Zipfel, Kudakwashe Jakata, Heather Bonney, Lee R. Berger

Publikováno v: South African Journal of Science, Vol 113, Iss 1/2, Pp 7-7 (2017)

We present the first application of high-resolution micro computed tomography in an analysis of both the internal and external morphology of the lumbar region of StW 431 – a hominin skeleton recovered from Member 4 infill of the Sterkfontein Caves

Externí odkaz: https://doaj.org/article/4e4c3c3fa89f416a9248384de0b6be94