Results 111 to 120 of about 715,228 (305)

Wild capuchin monkeys use stones and sticks to access underground food

Scientific Reports
Primates employ different tools and techniques to overcome the challenges of obtaining underground food resources. Humans and chimpanzees are known to tackle this problem with stick tools and one population of capuchin monkeys habitually uses stone tools.
Tatiane Valença, Gabriela Oliveira Affonço, Tiago Falótico   +2 more
doaj   +1 more source

Naïve, unenculturated chimpanzees fail to make and use flaked stone tools. [PDF]

Open Res Eur, 2021
Bandini E, Motes-Rodrigo A, Archer W, Minchin T, Axelsen H, Hernandez-Aguilar RA, McPherron SP, Tennie C.   +7 more
europepmc   +1 more source

In the mix: Replication studies to test the effectiveness of ochre in adhesives for tool hafting [PDF]

, 2006
Faculty of Science School of Geography,Achaeology and Enviromental Studies 9905929t thodgskiss@yahoo.comThis study was stimulated by questions that arose on the Middle Stone Age (MSA) tools from Sibudu cave, KwaZulu-Natal, South Africa.
Hodgskiss, Tamaryn Penny
core  

Actuation of Cell Layers in Three Dimensions

Advanced Materials, EarlyView.
ABSTRACT The alignment of fibers and cells in living tissues affect their mechanical properties and functionality. In this context, one can draw an analogy between tissues and nematic liquid crystal elastomers. We explore this analogy by growing fibroblasts on 2D‐patterned substrates and observing the contraction of cell sheets upon detachment from the
Kirsten Endresen, Aniruddh Murali, Birte C. Geerds, Grecia M. Valenzuela Portillo, Maria Bloksgaard, Daniel J.G. Pearce, Francesca Serra   +6 more
wiley   +1 more source

Matrix Viscoelasticity Regulates Dendritic Cell Migration and Immune Priming

Advanced Materials, EarlyView.
Matrix viscoelasticity is a key mechanical feature of the tumor microenvironment but remains poorly understood in immune regulation. Here, we develop a tunable collagen platform to decouple viscoelasticity from stiffness and show that slow‐relaxing matrices constrain dendritic cell migration by limiting actomyosin‐driven matrix remodeling, thereby ...
Wei‐Hung Jung, Emie Humann, Joshua M. Price, Yoav Binenbaum, Azra Haseki, Sanjana Iyer, David J. Mooney   +6 more
wiley   +1 more source

Three-dimensional surface morphometry differentiates behaviour on primate percussive stone tools. [PDF]

J R Soc Interface, 2021
Proffitt T, Reeves JS, Benito-Calvo A, Sánchez-Romero L, Arroyo A, Malaijivitnond S, Luncz LV.   +6 more
europepmc   +1 more source

The Gardener Site (41CP55): A Late Caddo Settlement on Big Cypress Creek in East Texas [PDF]

, 2014
The Gardener site (41CP55) in Camp County, Texas, was first recorded by Sullivan prior to construction of Lake Bob Sandlin on Big Cypress Creek. A surface collection of sherds and daub suggested that the site was the locus of a Late Caddo period (ca. A.D.
Nelson, Bo, Perttula, Timothy K., Selden, Robert Z., Jr.   +2 more
core   +1 more source

Double‐Transition‐Metal MXenes: Multimetallic 2D Platforms for Next‐Generation Biomedicine

Advanced Materials, EarlyView.
The present work explores recent progress in double‐transition‐metal MXenes and focuses on their potential as multifunctional biomedical nanoplatforms whose tunable optical, electronic, mechanical, and surface properties enable imaging, theranostics, antimicrobial activity, biosensing, tissue engineering, and drug delivery.
Parsa Namakiaraghi, Mohammad Mozafari, Masoud Soroush   +2 more
wiley   +1 more source

Vectorial application for the illustration of archaeological lithic artefacts using the "Stone Tools Illustrations with Vector Art" (STIVA) Method. [PDF]

PLoS One, 2021
Cerasoni JN.
europepmc   +1 more source

Nonflint Stone Tools of the Early Upper Paleolithic.

, 1993
Among the remains recovered from Paleolithic living surfaces, a category consists of blocks, cobbles, and plaquettes, which were used in a rough state and which display traces of use.
de Beaune, Sophie A.
core   +1 more source