Results 41 to 50 of about 9,650,037 (303)
Highly surface electron-deficient Co9S8 nanoarrays for enhanced oxygen evolution
Green Energy & Environment, 2020 Tailoring valence electron delocalization of transition metal center is of importance to achieve highly-active electrocatalysts for oxygen evolution reaction (OER).
Haoxuan Zhang +4 more
doaj +1 more source
Ligand‐dependent transcriptional heterogeneity in cell cycle gene expression delays G1/S entry
FEBS Letters, EarlyView.EGF and HRG induce distinct G1/S progression programs in ErbB2‐amplified BT474 breast cancer cells. Despite activating the potent ErbB2–ErbB3 heterodimer, HRG does not accelerate cell‐cycle entry. Instead, EGF promotes earlier restriction‐point passage via ERK–FOS signaling, whereas HRG activates the AKT–MYC axis, driving transcriptional heterogeneity ...
Ririn Rahmala Febri +5 more
wiley +1 more source
Artificial molecular machines and motors—Design and control of nanoscale motion
FEBS Letters, EarlyView.Molecules are constantly moving because of thermal fluctuations, but random motion alone cannot be exploited to perform directional tasks. Artificial molecular machines use chemical, electrical, or light energy to bias this motion. Molecular shuttles, rotary motors, and supramolecular pumps illustrate how nanoscale movement can be controlled and ...
Leonardo Andreoni, Alberto Credi
wiley +1 more source
General principles of biological hierarchical systems
, 2016 This contribution sets the stage for the following selection of articles addressing general aspects of the hierarchy theory of evolution. It does so by reviewing basic principles of hierarchical systems in general and biological nested hierarchies in ...
Serrelli, E
core +1 more source
Learning Hierarchical Multi-Category Text Classification Models
, 2005 We present a kernel-based algorithm for hierarchical text classification where the documents are allowed to belong to more than one category at a time.
Szedmak, S. +7 more
core +2 more sources
Lightweight 3D Hierarchical Metamaterial Microlattices
Advanced ScienceHierarchical auxetic metamaterials are a class of materials which are characterized by a multi‐tiered architecture and have the capability of exhibiting enhanced mechanical properties in comparison to their single‐geometry counterparts.
Luke Mizzi +5 more
doaj +1 more source
Molecular Oncology, EarlyView.In this explorative study, the abundance of circular RNA molecules in bone marrow stem cells was found to be elevated in patients with high‐risk myelodysplastic neoplasms, and to be associated with an increased risk of progression to acute myeloid leukemia.
Eileen Wedge +17 more
wiley +1 more source
The Journal of EngineeringThis paper proposes an observer‐based coupling‐coordinated adaptive hierarchical sliding mode control (CCAHSMC‐LSMO) framework for underactuated nonlinear systems. Addressing limitations in conventional methods, the design explicitly incorporates natural
Marzieh Ahmadi, Alireza Faraji
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Hierarchical control of parallel voltage source inverters in AC microgrids
The Journal of Engineering, 2018 Here, a distributed hierarchical control strategy is proposed for the parallel operating of voltage source inverters (VSIs) in AC microgrids (MGs). For the output voltage control of a VSI, conventional double-loop proportional-integral (PI) control ...
Zhongwen Li +5 more
doaj +1 more source
A Hierarchical Video Annotation System [PDF]
2009 IEEE International Conference on Semantic Computing, 2009 Semantic search service is generally considered to include text search, audio search, and video search. The annotation of a video is crucial to the success of video search and retrieval. With the precise annotation of video files and their semantic reasoning, more accurate search results according to the users’ query intention can be obtained.
ChengZhi Xu +4 more
openaire +1 more source