Results 51 to 60 of about 109,238 (254)

Solving a problem of establishing a connection between post offices in the area of a city [PDF]

open access: yesTransport Problems, 2015
According to The General Plan of Post Network and in accordance with the criteria for opening branches of postal services for customers numerous postal offices which perform delivery services are located on the territory of every large city area. In case
Biljana GRGUROVIC   +3 more
doaj  

Counterintuitive Fluorescence Blue Shift in Symmetry Breaking Dicationic Bis(indolium) with Two‐Photon Absorption Properties for NIR Living Cell Imaging

open access: yesAdvanced Materials, EarlyView.
Highly water‐soluble dicationic bis(indolium) dyes have been prepared, showing excellent two‐photon absorption and light emission. Their fluorescence behavior discloses an unusual increasing blue shift with increasing solvent polarity, which, in parallel, is beneficial for enhanced detection in biological media.
Carlos Benitez‐Martin   +5 more
wiley   +1 more source

On the Performance and Optimization of Energy-Efficient Secrecy Computation Offloading for Multiantenna UAV-Enabled NOMA-MEC With Aerial Friendly Jamming

open access: yesIEEE Open Journal of the Communications Society
This research investigates the secrecy performance and energy efficiency of a dual-unmanned aerial vehicle (UAV) computation offloading system that leverages uplink non-orthogonal multiple access (NOMA) designed for Internet of Things (IoT) networks ...
Anh-Nhat Nguyen   +9 more
doaj   +1 more source

2D Co‐Mo‐Hydroxide‐Based Multifunctional Material for the Development of H2‐Based Clean Energy Technologies

open access: yesAdvanced Materials, EarlyView.
2D α‐Co(OH)2 interleaved with Mo species displays an appealing dual functionality for the production and use of green hydrogen.Mo incorporation greatly benefits the electrochemical behaviour in Oxygen Evolution Reaction for H2 production, while the magnetocaloric response at liquid H2 temperature paves the way for alternative cryogenic refrigerants ...
Daniel Muñoz‐Gil   +14 more
wiley   +1 more source

Flexoelectrically Induced Polar Topology in Twisted SrTiO3 Membranes

open access: yesAdvanced Materials, EarlyView.
Twisted SrTiO3 bilayers host polar vortices of flexoelectric origin, revealed through combined experiment and theory. By reconstructing polarization from the toroidal moment of strain gradients, the work establishes a 3D chiral state with broken inversion and mirror symmetries.
Isabel Tenreiro   +13 more
wiley   +1 more source

A systematic review of emerging trends of IoT in healthcare and IoMT frameworks

open access: yesDiscover Public Health
The advancements of IoT (Internet of Things) in the medical sector led to the development of Internet of Medical Things (IoMT) and its application. IoMT is seen to enhance healthcare management through many applications such as device-integration, data ...
Tamanna Shah   +5 more
doaj   +1 more source

Atomistic Mechanisms Triggered by Joule Heating Effects in Metallic Cu‐Bi Nanowires for Spintronics

open access: yesAdvanced Materials, EarlyView.
Bi doped metallic Cu nanowires are promising for spintronics thanks to the stabilization of a giant spin Hall effect. However, heat resulting from current injection forces Bi to leave solution, forcing segregation into monoatomic decorations which evolve into coherent crystalline aggregates.
Alejandra Guedeja‐Marrón   +6 more
wiley   +1 more source

Flexible Dielectric Acoustic Resonator Patch for Tissue Regeneration

open access: yesAdvanced Materials, EarlyView.
A flexible dielectric acoustic resonator patch enables MHz‐range ultrasound generation through resonance amplification without using piezoelectric materials. Conformal integration on a curved substrate allows efficient acoustic delivery to tissue‐mimicking environments.
Donyoung Kang   +7 more
wiley   +1 more source

Single‐Chromophore Homojunction Organic Solar Cells: A Path to Simplicity and Efficiency

open access: yesAdvanced Materials, EarlyView.
This perspective discusses how the intrinsic optoelectronic properties of organic semiconductors, their molecular packing in the solid‐state, and internal energetic gradients within a device can enable free‐charge carrier generation in homojunction organic solar cells.
Shaun McAnally   +2 more
wiley   +1 more source

Detection of Battery Appearance Defects Based on Multi‑Scale Object Detection

open access: yesTaiyuan Ligong Daxue xuebao
[Purposes] Based on YOLO v4 framework, a new feature extraction network VoVNet-A algorithm was designed, which can effectively identify image fine-grained features.
LI Yang   +6 more
doaj   +1 more source

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