Results 41 to 50 of about 2,505,304 (296)

Spiro‐Phenothiazine Hole‐Transporting Materials: Unlocking Stability and Scalability in Perovskite Solar Cells

open access: yesAdvanced Materials, EarlyView.
Fluorene‐functionalized spiro‐phenothiazine (PTZ‐Fl) exhibits strong Li+ affinity and thermal stability, enabling a PCE of 25.75% in small‐area cells and 22.07% in 25 cm2 modules. Under ISOS‐L3 conditions, PTZ‐Flbased devices retain over 80% efficiency after 1000 hours, demonstrating superior stability and scalability compared to spiro‐OMeTAD for next ...
Javier Urieta‐Mora   +17 more
wiley   +1 more source

Diez noticias sobre el quechua en el último censo peruano

open access: yesLetras, 2019
Se estudian las cifras sobre el quechua entregadas por el censo peruano de 2017, analizando la cantidad y proporción de quechuahablantes, la relación entre estos datos y los vinculados a la autoidentifcación étnica, el uso de las categorías descriptivas,
Luis Andrade Ciudad
doaj   +1 more source

Expansion of the geographic range of Cyatta abscondita Sosa-Calvo et al., 2013 (Hymenoptera: Formicidae) [PDF]

open access: yes, 2016
The presence of the recently described fungus-farming ant genus and species Cyatta abscondita is reported in the northwestern region of Misiones Province in Argentina. A single worker of C.
Filloy, Julieta   +4 more
core   +2 more sources

Disrupting J‐Aggregation in Triazatruxene Dimers to Develop Responsive Luminescent Inks for Anti‐Counterfeiting Applications

open access: yesAdvanced Optical Materials, Volume 13, Issue 8, March 13, 2025.
This study investigates the stimulus‐responsive behavior of trialkylated triazatruxene dimers for third‐generation luminescent security inks. In particular, the derivative with flexible dodecyl chains displays high‐contrast, reversible color changes upon heating or shear, driven by liquid crystalline phase transitions and involving J ...
Raúl Martín   +7 more
wiley   +1 more source

AFM study of oxygen reduction products on HOPG in the LiPF6–DMSO electrolyte [PDF]

open access: yes, 2013
Ex situ atomic force microscopy (AFM) has been used to study the morphology of oxygen reduction products in the LiPF6–dimethyl sulfoxide (DMSO) electrolyte, i.e. Li2O2 on a highly oriented pyrolytic graphite (HOPG) surface.
Calvo, Ernesto Julio   +3 more
core   +1 more source

Exploring Ligand Effects in the Selective Catalytic Dehydrogenative Borylation of Alkynes with Aluminum

open access: yesAdvanced Synthesis &Catalysis, EarlyView.
Proper selection of a modified guanidinato ligand allows for the selective catalytic dehydroborylation of terminal alkynes by an air‐stable aluminum complex. A plausible reaction pathway is suggested based on DFT studies, where the auxiliary substituent of the guanidinato ligand actively participates in the activation of the σ CH bond.
Carlos Ginés   +6 more
wiley   +1 more source

Diseño inclusivo en residencias geriátricas

open access: yesLimaq, 2022
En el Perú hay solo 92 albergues acreditados para adultos mayores. Muchos de estos establecimientos presentan deficiencias funcionales que limitan las capacidades físicas, psicológicas y sociales del usuario. Por otro lado, se estima que 255 albergues se
Martha Angelica Morán Ciudad
doaj   +1 more source

Del urbanismo androcéntrico a la ciudad cuidadora

open access: yes, 2018
espanolLa configuracion urbana no es neutra. En la planificacion y el diseno urbano se prioriza el desarrollo de determinadas actividades mientras que otras son marginales y se espera que se resuelvan por si solas.
Blanca Valdivia Urdiales
semanticscholar   +1 more source

Adolescents’ smoking experiences, family structure, parental smoking and socio-economic status in Ciudad Juárez, Mexico

open access: yesInternational Journal for Equity in Health, 2016
BackgroundCigarette smoking is the leading cause of preventable death worldwide. Tobacco use and secondhand-tobacco smoke (SHS) exposure are classified as a pediatric disease.
Yelena Bird   +2 more
semanticscholar   +1 more source

Innovative Fluorescent Probes to Track Lipid Droplets and Endoplasmic Reticulum Dynamics

open access: yesAdvanced Sensor Research, EarlyView.
Eco‐designed fluorescent probes enable selective imaging of lipid droplets and endoplasmic reticulum dynamics. Through green multicomponent synthesis, the probes exhibit high photostability and distinct subcellular localization. Their targeting selectivity arises from molecular geometry and microenvironmental adaptability, offering sustainable tools ...
Diana García‐García   +5 more
wiley   +1 more source

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