Results 61 to 70 of about 300,940 (321)

Ab-initio Phonon Calculations for the layered compound TiOCl

open access: yes, 2005
We present first-principles frozen-phonon calculations for the three Raman-active $A_g$ modes in the spin-1/2 layered TiOCl system within two different well-known approaches: the local density approximation (LDA) and the so-called LDA+U approximation. We
Pisani, Leonardo, Valenti, Roser
core   +1 more source

End‐to‐End Sensing Systems for Breast Cancer: From Wearables for Early Detection to Lab‐Based Diagnosis Chips

open access: yesAdvanced Materials Technologies, EarlyView.
This review explores advances in wearable and lab‐on‐chip technologies for breast cancer detection. Covering tactile, thermal, ultrasound, microwave, electrical impedance tomography, electrochemical, microelectromechanical, and optical systems, it highlights innovations in flexible electronics, nanomaterials, and machine learning.
Neshika Wijewardhane   +4 more
wiley   +1 more source

Role of Self-Interaction Effects in the Geometry Optimization of Small Metal Clusters

open access: yes, 1995
By combining the Self-Interaction Correction (SIC) with pseudopotential perturbation theory, the role of self-interaction errors inherent to the Local Density Approximation (LDA) to Density Functional Theory is estimated in the determination of ground ...
J. M Pacheco   +5 more
core   +1 more source

Temperature‐Dependent Zinc Oxide Cathodoluminescence: Toward Compact Wavelength‐Tunable Solid‐State Photoionization Sources

open access: yesAdvanced Optical Materials, EarlyView.
A proof‐of‐concept of a thermally‐tunable cathodoluminescence‐based light source is demonstrated using a wide‐bandgap z‐cut ZnO crystal as anode, resulting in the ultraviolet (UV) emission peak shifting from 398 nm to ~409 nm (3.115‐3.032 eV). Our results establish the feasibility of a compact, field‐deployable UV source with potential for gas sensing ...
Rui M. R. Pinto   +7 more
wiley   +1 more source

Evaluation of mineral and heavy metal contents in Croatian blackberry wines

open access: yesCzech Journal of Food Sciences, 2011
The mineral and heavy metal contents in 17 commercially available Croatian blackberry wines were determined by FAAS/FAES and GFAAS. The concentrations of potassium, sodium, calcium, magnesium, iron, copper, manganese, zinc, cobalt, chromium, and cadmium ...
Daniela Amidžić Klarić   +3 more
doaj   +1 more source

On the use of ensemble method for multi view textual data

open access: yesJournal of Information and Telecommunication, 2020
Nowadays, trends detection is an important task on social media to determine trends that are being discussed the most on a social platform. One of the main challenges of this task is the processing of unstructured textual data which has different ...
Maha Fraj   +2 more
doaj   +1 more source

Ab initio many-body calculations on infinite carbon and boron-nitrogen chains

open access: yes, 2002
In this paper we report first-principles calculations on the ground-state electronic structure of two infinite one-dimensional systems: (a) a chain of carbon atoms and (b) a chain of alternating boron and nitrogen atoms.
A. Abdurahman   +45 more
core   +2 more sources

Flexible Sensor‐Based Human–Machine Interfaces with AI Integration for Medical Robotics

open access: yesAdvanced Robotics Research, EarlyView.
This review explores how flexible sensing technology and artificial intelligence (AI) significantly enhance human–machine interfaces in medical robotics. It highlights key sensing mechanisms, AI‐driven advancements, and applications in prosthetics, exoskeletons, and surgical robotics.
Yuxiao Wang   +5 more
wiley   +1 more source

Paying Back to Good Deeds: A Text Mining Approach to Explore Don-jjul as Pro-consumption Behavior

open access: yesAsia Marketing Journal
More consumers are choosing pro-consumption for social change, but scholars know little about why and how consumers engage in pro-consumption behaviors.
Hojin Choo, Sue Hyun Lee
doaj   +1 more source

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