Results 61 to 70 of about 85,942 (221)

The Extremely Low Mechanical Force Generated by Nano‐Pulling Induces Global Changes in the Microtubule Network, Nuclear Morphology, and Chromatin Transcription in Neurons

Small, EarlyView.
Nano‐pulling induces stabilization, reorganization, and reorientation of the microtubule network. The nucleus of stretched cells experiences increased lateral tension, becomes more spherical, and develops surface grooves. At the level of gene expression regulation, changes in nuclear morphology induce global chromatin remodeling, leading to reduced ...
Alessandro Falconieri, Lorenzo Da Palmata, Valentina Cappello, Tiziana Julia Nadjeschda Schmidt, Pietro Folino, Barbara Storti, Ranieri Bizzarri, Vittoria Raffa   +7 more
wiley   +1 more source

Thermosensitive Nanostructured Coacervates Developed by Mixing ABA‐ and AB‐Block Copolymers and Their Unique Sustained Release of Nano‐Micelles in a Regulated Manner

Small, EarlyView.
Polyion complex micelles composed of blends of ABA and AB block copolymers can form coacervates with a hexagonally packed cylinder nanostructure after heating. The resulting coacervates can release the micelles under physiological conditions in a zero‐order kinetics, possessing cargo proteins.
Takumi Egashira, Hiroshi Kamizawa, Yujiro Hamada, Wataru Fushimoto, Hiroshi Y. Yoshikawa, Yuji Higaki, Atsushi Takahara, Takeshi Mori, Yoshiki Katayama, Akihiro Kishimura   +9 more
wiley   +1 more source

Design, Mechanisms, and Applications of DNA‐Mediated Dynamically Reconfigurable Plasmonic Gold Nanostructures

Small Methods, EarlyView.
This review provides key principles of designing and synthesizing reconfigurable plasmonic gold nanostructures for generating and controlling physical, chemical, and biological properties and functions. The recent advances in the biological and materials applications of dynamically reconfigurable plasmonic gold nanostructures are also summarized ...
So Young Choi, Jieun Kim, Eun Ho Song, Eunhye Park, Jingrui Wu, Juyeon Yoo, Jwa‐Min Nam   +6 more
wiley   +1 more source

Probing Viscoelasticity of Polymeric Coatings Using Nonlinear Dynamic Atomic Force Microscopy

Small Methods, EarlyView.
For soft materials it is essential to characterize both the elastic and viscous material properties. Using an atomic force microscope, the hardening nonlinearity induced by a tip‐sample contact and bifurcation points can be used to separately estimate the visco‐ and elastic parts of the tip‐sample interaction force.
Lara Vivian Fricke, Nick Wansink, Michel Rosso, Urs Staufer, Pierpaolo Belardinelli, Farbod Alijani   +5 more
wiley   +1 more source

The Control–Entropy Paradox: Modeling the Thermodynamic Limits of Environmental Governance

Systems Research and Behavioral Science, EarlyView.
ABSTRACT Environmental governance often seeks to reduce disorder, yet the energetic and material costs of control are overlooked. This article presents the Control–Entropy Paradox, developing a formal systems model and a conceptual extension of governance theory.
Sibongiseni B. Hlabisa
wiley   +1 more source

Area‐Selective Silicidation: Patterning Metal Silicides from the Bottom Up

Small Structures, EarlyView.
The engineering of surface defects using a focused ion beam on a silicon substrate enables metal silicidation reactions to occur only at desired locations, in an area‐selective manner. This method addresses the challenge of structuring metal silicides at the nanoscale, opening new possibilities for fabricating and studying this class of materials ...
Gabriele Botta, Konstantina Mitropoulou, Evgenii Modin, Manuel Suárez‐Rodríguez, Andrey Chuvilin, Alexander Bittner, Mato Knez   +6 more
wiley   +1 more source

Design of a Marker‐Based Human–Robot Following Motion Control Strategy

CAAI Transactions on Intelligence Technology, EarlyView.
ABSTRACT To address the challenges of jerky movements and poor tracking performance in outdoor environments for a following‐type mobile robot, a novel marker‐based human–machine following‐motion control strategy is explored. This strategy decouples the control of linear velocity and angular velocity, handling them separately.
Zhigang Zhang, Yongsheng Guo, Xiaoxia Yu, Shuaishuai Ge   +3 more
wiley   +1 more source

In hospite and ex hospite architecture of photosynthetic thylakoid membranes in Symbiodinium spp. using small‐angle neutron scattering

Journal of Applied Crystallography, EarlyView.
Small‐angle neutron scattering is used to detect signals from the photosynthetic membranes of symbiotic algae living inside and outside their host corals and anemones. A model is constructed for the scattering that allows the architecture of the triple membrane stack be understood in living organisms, with implications for their physiology.We ...
Robert W. Corkery, Christopher J. Garvey, Judith E. Houston   +2 more
wiley   +1 more source

Marked tree demographic variation along subtle elevation differences partially explains species' habitat associations in an Amazonian forest

Journal of Ecology, EarlyView.
These findings show that even small differences in elevation can lead to biologically meaningful variation in resource access that translates into significant differences in tree growth and survival. However, resource access could not fully explain the patterns of topographically driven demographic variation we observed. While certain species may still
Paola A. Jaramillo, Sabrina E. Russo, Alvaro Duque, Nicolás Castaño, Daniel Zuleta   +4 more
wiley   +1 more source

Radiocarbon‐Inferred Population Trajectories for Southeastern Arabia During the Bronze Age

Arabian Archaeology and Epigraphy, EarlyView.
ABSTRACT This paper builds on previous attempts to estimate radiocarbon‐inferred population trends—although in Arabia, these attempts are few. A probabilistic reconstruction of Bronze Age (3200–1300 cal BC) demographic trends using a new data set of radiocarbon rates from across the Arabian Peninsula (n = 1280) is presented and a subset of dates (n ...
James R. P. McDonald
wiley   +1 more source