Results 111 to 120 of about 41,264 (259)

Metal‐Free Halogen‐Engineered Carbon Nanotubes for Highly Efficient Oxygen Reduction Reaction

open access: yesENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
In work employs density functional theory screening to guide the halogen engineering of metal‐free, Cl‐mediated carbon nanotubes for a highly efficient oxygen reduction reaction (ORR). Cl‐mediation optimally tunes the electronic structure and binding energies of oxygen intermediates, delivering an ORR activity rivaling that of commercial Pt/C, high 4e−
Kai Zhao   +11 more
wiley   +1 more source

A Practical Implementation of Post-Quantum Cryptography for Secure Wireless Communication

open access: yesNetwork
Recent advances in quantum computing have prompted urgent consideration of the migration of classical cryptographic systems to post-quantum alternatives.
Babatunde Ojetunde   +4 more
doaj   +1 more source

St. Louis & San Francisco (SLSF) "Frisco" 619

open access: yes, 1938
A photograph print showing the St.
Graves, Ralph L.
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Epoxidation of Cashmeran and Unprecedented Rearrangement to an α‐Carbonyl δ‐Spirolactone

open access: yesEuropean Journal of Organic Chemistry, EarlyView.
A new strategy enables diastereoselective conversion of Cashmeran into a previously unknown α‐carbonyl δ‐spirolactone via epoxidation, Baeyer–Villiger oxidation, and acid‐catalyzed rearrangement. Structure and mechanism were confirmed by NMR, single crystal X‐ray diffraction, and computational studies. We report the epoxidation of Cashmeran followed by
Lukas Kell   +7 more
wiley   +1 more source

The Intestinal Stem Cell Niche: Generation and Utilization of Intestinal Organoids

open access: yesOrganoids
In cell biology, the stem cell niche is the dynamic microenvironment in which stem cells reside and receive signals that determine their behavior and fate.
Toshio Takahashi, Yuta Takase
doaj   +1 more source

Unique deficits in place coding across subfields of the hippocampus in a mouse model of temporal lobe epilepsy

open access: yesEpilepsia, EarlyView.
Abstract Objective Memory problems are comorbid with temporal lobe epilepsy (TLE). Animal models of TLE reveal impairments in spatial firing fields of hippocampal place cells, providing a potential neural substrate for memory problems. Each subfield of the hippocampus carries out unique aspects of spatial memory, yet little is known about how ...
Brittney L. Boublil   +4 more
wiley   +1 more source

Protective viral interference in HEV-ZIKV coinfection: Serological evidence and foetomaternal outcomes in HIV-infected and immunocompetent pregnant women in Nigeria

open access: yesInternational Journal of Infectious Diseases
Background: Viral interference – where one viral infection affects susceptibility to another – remains poorly characterized in pregnancy. We investigated whether hepatitis E virus (HEV) and Zika virus (ZIKV) coinfection demonstrates interference patterns
Asaga Mac Peter   +4 more
doaj   +1 more source

Fully automated three‐dimensional deep learning‐based magnetic resonance imaging segmentation of brain cavities in epilepsy surgery

open access: yesEpilepsia, EarlyView.
Abstract Objective There are several clinical and research applications for determining the amount of brain tissue resected after epilepsy surgery; however, manual segmentation of postoperative magnetic resonance imaging (MRI) is imprecise and time‐consuming.
Raphael Fernandes Casseb   +12 more
wiley   +1 more source

Multivariate Timing and Granger Causality Analysis of Spontaneous Facial Mimicry in Response to Android Dynamic Facial Expressions

open access: yesSensors
Although evidence exists for android-induced spontaneous facial mimicry, the timing and temporal precedence (Granger causality) of this effect remain uncertain.
Chun-Ting Hsu   +4 more
doaj   +1 more source

Sketch map of Middle-Celebes /

open access: yes, 1942
First edition. Topographic map series of central Sulawesi, Indoneasia showing political boundaries, roads and rice fields. Relief shown by hachures and spot heights.; "Photolithographed and reprinted from a Dutch map."; Includes index to adjoining sheets.
Kruijt, Alb. C. (Albertus Christiaan), 1869-1949, cartographer.
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