Results 41 to 50 of about 23,145 (245)

Evaluación del potencial citotóxico, mutagénico y genotoxico de extracto acuoso y aceite esencial de Carica candamarcensis Hook

open access: yesIatreia, 2010
Un estudio previo realizado por el grupo de investigación "Prevención de cáncer" de la Universidad de Nariño demostró el efecto in vitro anti H.
Jaqueline Mena Huertas   +5 more
doaj  

Photonic Engineering Enables All‐Passive Upconversion Imaging with Low‐Intensity Near‐Infrared Light

open access: yesAdvanced Functional Materials, EarlyView.
A passive upconversion imaging system enables the observation of scenes illuminated by low‐intensity incoherent near‐infrared light from 750 to 930 nm, by converting it into the visible without the use of external power. The upconverter is enabled by triplet–triplet annihilation in a bulk heterojunction, with absorption enhanced by plasmonic resonators
Rabeeya Hamid   +13 more
wiley   +1 more source

In Situ Study of Resistive Switching in a Nitride‐Based Memristive Device

open access: yesAdvanced Functional Materials, EarlyView.
In situ TEM biasing experiment demonstrates the volatile I‐V characteristic of MIM lamella device. In situ STEM‐EELS Ti L2/L3 ratio maps provide direct evidence of the oxygen vacancies migrations under positive/negative electrical bias, which is critical for revealing the RS mechanism for the MIM lamella device.
Di Zhang   +19 more
wiley   +1 more source

Self adeziv yapıştırıcı simanların mutajenik potansiyellerinin salmonella/mikrozom testi ile değerlendirilmesi

open access: yesEuropean Annals of Dental Sciences, 2015
İndirekt restorasyonların yapıştırılmasında tercih edilen self-adeziv yapıştırıcı simanlar, diş ve ağız dokuları ile uzun süre temas halindedirler. Bu nedenle bu materyallerin biyouyumlulukları hasta ve hekimler için artan bir şekilde önem kazanmaktadır.
Tuğba Toz   +2 more
doaj  

Unusual Swelling Behavior of Hydrogels Modified with Spiropyran as Appendage or Crosslinker

open access: yesAdvanced Functional Materials, EarlyView.
Not so innocent after all—spiropyran crosslinkers in methylenebisacrylamide‐crosslinked poly(acrylamide‐co‐acrylic acid) hydrogels increase crosslinking density, but also, counterintuitively, increase swelling. Charge complexation, cooperative chemo‐mechanical effects, and aggregation may explain these observations.
Michael M. Lerch   +7 more
wiley   +1 more source

EFECTO DEL OZONO EN LA DEGRADACION DE DISOLUCIONES ACUOSAS DE OXACILINA

open access: yesRevista CENIC Ciencias Químicas, 2020
La presencia de compuestos farmacéuticos en fuentes de abasto de agua y en ecosistemas constituye riegos potenciales con efectos negativos al medioambiente, y son denominados contaminantes emergentes. Los antibióticos reciben una atención especial por la
Danela Silva   +2 more
doaj  

Multiple Twinning in Nacre and Aragonite

open access: yesAdvanced Functional Materials, EarlyView.
Electron backscatter diffraction map of a cluster of geologic aragonite, exhibiting single, double, and triple twins. The whole cluster is approximately 2 cm wide. Colors indicate crystal orientations, so that pixels where the a‐, b‐, and c‐axis is perpendicular to the image plane are green, red, and blue, respectively.
Connor A. Schmidt   +7 more
wiley   +1 more source

Enhancing Therapeutic Efficacy of Donepezil, an Alzheimer’s Disease Drug, by Diplazium esculentum (Retz.) Sw. and Its Phytochemicals

open access: yesPharmaceuticals
Alzheimer’s disease (AD) is the most common type of dementia and a significant concern to global public health due to the prevalence of aging populations.
Woorawee Inthachat   +6 more
doaj   +1 more source

Solvent‐Free Bonding Mechanisms and Microstructure Engineering in Dry Electrode Technology for Lithium‐Ion Batteries

open access: yesAdvanced Functional Materials, EarlyView.
Dry electrode technology revolutionizes battery manufacturing by eliminating toxic solvents and energy‐intensive drying. This work details two promising techniques: dry spray deposition and polymer fibrillation. How their unique solvent‐free bonding mechanisms create uniform microstructures for thicker, denser electrodes, boosting energy density and ...
Yuhao Liang   +7 more
wiley   +1 more source

Single Solid‐State Ion Channels as Potentiometric Nanosensors

open access: yesAdvanced Functional Materials, EarlyView.
Single gold nanopores functionalized with mixed self‐assembled monolayers act as solid‐state ion channels for direct, selective potentiometric sensing of inorganic ions (Ag⁺). The design overcomes key miniaturization barriers of conventional ion‐selective electrodes by combining low resistivity with suppressed loss of active components, enabling robust
Gergely T. Solymosi   +4 more
wiley   +1 more source

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