Results 111 to 120 of about 3,970,343 (282)

Effects of surface structure deformation on static friction at fractal interfaces

open access: yes, 2013
The evolution of fractal surface structures with flattening of asperities was investigated using isotropically roughened aluminium surfaces loaded in compression. It was found that asperity amplitude, mean roughness and fractal dimension decrease through
Einav, Itai   +2 more
core   +1 more source

Antibody‐Functionalized DNA Hydrogels Recognize and Isolate Living Tumor Cells

open access: yesAdvanced Materials Interfaces, EarlyView.
We present a novel strategy using DNA Y‐motif nanostar hydrogels and DNA‐functionalized antibodies for precise live‐cell manipulation. Target cells are labeled with DNA sticky ends that hybridize with DNA Y‐motifs, enabling their incorporation and capture within the hydrogel during self‐assembly.
Laura Bourdon   +9 more
wiley   +1 more source

Diagnosis of B-CLL Leukemia Using Fractal Dimension [PDF]

open access: yesJournal of Kerman University of Medical Sciences, 2017
Background:Leukemia is cancer of blood and bone marrow cells. In general, there are four types of leukemia: chronic myelogenous leukemia (CML), acute myeloid leukemia (AML), B-cell chronic lymphocytic leukemia (CLL) and acute lymphoblastic leukemia (ALL).
Tohid Yousefzadeh Hassanluie   +2 more
doaj  

Multi‐Level Hybrid Anti‐Counterfeit Labels via Solid‐State Dewetting Under Spatial Confinement

open access: yesAdvanced Materials Technologies, EarlyView.
This study presents a hybrid encoding approach combining deterministic patterns fabricated by photolithography and stochastic features formed by the solid‐state dewetting of silver films under strong confinement at the micrometer and nanometer length scales.
Farnaz Foadi   +5 more
wiley   +1 more source

Fractal dimension algorithms and their application to time series associated with natural phenomena

open access: yes, 2013
Chaotic invariants like the fractal dimensions are used to characterize non-linear time series. The fractal dimension is an important characteristic of systems, because it contains information about their geometrical structure at multiple scales. In this
F. L. la Torre   +3 more
semanticscholar   +1 more source

Multimodal Imaging Reveals Cerebral Microcirculation Dynamics and Mechanisms in Mouse Central Nervous System After Intranasal Infection With Recombinant Pseudorabies Virus

open access: yesAdvanced Science, EarlyView.
Multi‐modality imaging strategy applied to PRV‐induced central nervous system infection enables dynamic visualization of cerebrovascular dysfunction, including hyperemia, hypoperfusion, and vascular remodeling. These changes are linked to microglial activation and impaired angiogenesis, providing mechanistic insight into PRV neuropathogenesis and ...
Shuting Ling   +13 more
wiley   +1 more source

Switchable Bidirectional Sound Absorption Via Exceptional Point Modulation in Acoustic Metastructures with Interleaved Resonator Coupling

open access: yesAdvanced Science, EarlyView.
A switchable bidirectional acoustic metastructure is proposed, enabling broadband and frequency‐selective absorption via interleaved resonator coupling and exceptional point modulation. It outperforms traditional unidirectional designs, offering compact, efficient sound control from both directions and establishing a generalized framework for extending
Zichao Guo   +7 more
wiley   +1 more source

Wearable and Implantable Devices for Continuous Monitoring of Muscle Physiological Activity: A Review

open access: yesAdvanced Science, EarlyView.
Recent advances in materials and device engineering enable continuous, real‐time monitoring of muscle activity via wearable and implantable systems. This review critically summarizes emerging technologies for tracking electrophysiological, biomechanical, and oxygenation signals, outlines fundamental principles, and highlights key challenges and ...
Zhengwei Liao   +4 more
wiley   +1 more source

Geometrically Encoded Positioning of Introns, Intergenic Segments, and Exons in the Human Genome

open access: yesAdvanced Science, EarlyView.
This study introduces a new hypothesis: exons, introns, and intergenic segments are non‐random projections of the functional layers of 3D structure of chromatin packing domains. Evidence is presented that this “geometric code” may encode volumetric structure, reconciling epigenetic patterns, correlates with oncogenic mutations, acting as a potential ...
Luay M. Almassalha   +11 more
wiley   +1 more source

Home - About - Disclaimer - Privacy