Results 81 to 90 of about 9,036,535 (251)

Supercritical Fluid Chromatography for Expedited Sample Clean‐Up in Isotope Ratio Mass Spectrometry Including Cholesterol as New Endogenous Reference Compound

open access: yesDrug Testing and Analysis, EarlyView.
Supercritical fluid chromatography was employed in the sample preparation for IRMS determinations in sports drug testing for the first time and the developed method was successfully validated. Cholesterol (CHOL) was introduced as a novel endogenous reference compound and population‐based Δ‐values were established as shown here.
Thomas Piper, Jana Drewes, Mario Thevis
wiley   +1 more source

Constructing activity–mobility trajectories of college students based on smart card transaction data

open access: yesInternational Journal of Transportation Science and Technology, 2017
In this research, we use UB card as a convenient source of combined smart transaction data in order to define a campus-wide model for constructing students’ activity–mobility trajectories in time–space dimension. UB Card is a student’s official ID at the
Negin Ebadi, Jee Eun Kang, Samiul Hasan
doaj   +1 more source

Electrolytic (C2CNT) Carbon Nanotubes Made From CO2 as an Inexpensive Carbon Sink and High‐Capacity Li‐Ion Battery Graphite Replacement

open access: yesEcoEnergy, EarlyView.
Carbon‐negative carbon nanotubes produced by molten CO2 electrolysis offer a low‐cost, high‐performance alternative to graphite in Li‐ion battery anodes. Replacing conventional carbon materials with electrolytic CNTs can improve battery capacity and charging performance while reducing costs and contributing to carbon mitigation.
Gad Licht, Stuart Licht
wiley   +1 more source

Nanocubes and Cuboctahedra: Entropic Stabilization Versus Thermal Segregation in Rock Salt‐ and Spinel‐Type Multinary Oxides from Spray‐Flame Synthesis

open access: yesENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Spray‐flame synthesis enables highly flexible and scalable production of multinary and high‐entropy oxide nanoparticles due to high synthesis temperatures with subsequent quenching. Temperature‐dependent in situ diffraction of as‐synthesized materials clearly reveals entropy stabilization in rock salt lattices, while spinels—featuring tetrahedral and ...
Mohammed‐Ali Sheikh   +7 more
wiley   +1 more source

Silver City, A Baseball Team

open access: yes, 1887
Players and spectators pose for a group picture.Three of the men have been identified as J. B. Card; J. A.

core  

Dimensional Engineering of Wet‐Spun MOF‐Based Woven Fabrics for Superior Electromagnetic Wave Absorption

open access: yesENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
This work fabricated MOF‐based woven absorbing fabrics with dimensional engineering via a wet spinning strategy. The absorbing fabrics achieve a reflection loss of −51.47 dB at 2.9 mm, with an effective absorption bandwidth reaching 3.54 GHz. The absorbing fabrics can be freely bent, stretched, and folded, with individual fibers exhibiting a break ...
Zihao Yan   +6 more
wiley   +1 more source

Enhanced Electron‐Capturing by Single‐Atomic Iron on Pyridinic N‐Deficient Carbon Drives Self‐Oxidative Degradation of Pollutants

open access: yesENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Pyrolysis of FeOx/g‐C3N4 and ZIF‐8 is performed to introduce Fe single atom and pyridinic nitrogen vacancies onto N‐doped carbon. This modification enables the materials to efficiently extract electrons from ciprofloxacin (CIP) and activate dissolved oxygen. 100% of CIP was degraded within 1 min without adding any oxidant.
Jianyang Gao   +5 more
wiley   +1 more source

An enhanced dynamic ID-based authentication scheme for telecare medical information systems

open access: yesJournal of King Saud University: Computer and Information Sciences, 2017
The authentication schemes for telecare medical information systems (TMIS) try to ensure secure and authorized access. ID-based authentication schemes address secure communication, but privacy is not properly addressed.
Ankita Chaturvedi   +2 more
doaj   +1 more source

Credit Card Selection Criteria: Singapore Perspective [PDF]

open access: yes
This study used factor analysis to examine credit card selection criteria among Singaporeans. The results showed that convenience of use and protection, economics, and flexibility were the main drivers, while the reputation of card was the least ...
Ramin Cooper Maysami, Lydia L. Gan
core  

Reflex seizures and epilepsy surgery: A network approach case‐based exploration

open access: yesEpileptic Disorders, EarlyView.
Abstract Context Reflex seizures (RS) are defined by their consistent provocation by specific stimuli, encompassing a broad range from elementary sensory inputs to complex cognitive tasks. While RS are often encountered in clinical practice, their surgical management remains sparsely reported and poorly systematized.
Olivier Aron   +6 more
wiley   +1 more source

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