Results 61 to 70 of about 592,256 (277)

Photocatalytic Versus Stoichiometric Hydrogen Generation Using Mesoporous Silicon Catalysts: The Complex Role of Sacrificial Reagents

open access: yesAdvanced Functional Materials, EarlyView.
This study highlights the importance of accounting for stoichiometric hydrogen produced when utilizing Si photocatalysts. The stoichiometric contribution is sacrificial reagent dependent and decreases with increasing sterics around the catalyst surface.
Sarrah H. Putwa   +4 more
wiley   +1 more source

Application of the Generalized Method of Moments for Estimating Continuous-Time Models of U.S. Short-Term Interest Rates [PDF]

open access: yes
We show by Monte Carlo simulations that the jackknife estimation of QUENOUILLE (1956) provides substantial bias reduction for the estimation of short-term interest rate models applied in CHAN ET AL. (1992) - hereafter CKLS (1992).
Balázs Cserna
core  

Emergence of Light‐Transforming Layered Hybrid Halide Perovskites

open access: yesAdvanced Functional Materials, EarlyView.
The emerging class of light‐transforming layered halide perovskite materials is reviewed, outlining challenges for their development and perspectives toward application in the future. Abstract Layered hybrid halide perovskites (LHPs) have attracted considerable attention in optoelectronics.
Ghewa AlSabeh, Jovana V. Milić
wiley   +1 more source

Division of Labour and Directed Production [PDF]

open access: yes
We examine a situation where efforts on different tasks positively affect production but are not separately verifiable and where the manager (principal) and the worker (agent) have different ideas about how production should be carried out: agents prefer
Marisa Ratto, Wendelin Schnedler
core  

CO2 Reduction on Copper‐Nitrogen‐Doped Carbon Catalysts Tuned by Pulsed Potential Electrolysis: Effect of Pulse Potential

open access: yesAdvanced Functional Materials, EarlyView.
This study demonstrates that pulsed potential electrolysis significantly improves CO2 reduction performance on copper‐nitrogen doped carbon electrodes. The formation of cationic copper sites and metallic clusters as a function of applied intermittent potential leads to notable selectivity changes compared to potentiostatic reduction.
Dorottya Hursán   +13 more
wiley   +1 more source

Lead-free relaxor ferroelectric thin films with enhanced energy density through process optimization

open access: yesCommunications Materials
Dielectric capacitors used as energy storage components in electrical and electronic systems offer ultrafast charge and discharge rates but have long faced the challenge of insufficient recoverable energy storage density.
Herbert Kobald   +4 more
doaj   +1 more source

Influence of Genotype and Environment on the Diterpenes in the Wax Layer of Some Flue-cured Tobaccos/Einfluss von Genotyp und Umwelt auf die Diterpene in der Wachsschicht einiger „flue-cured“–Tabake

open access: yesContributions to Tobacco and Nicotine Research, 1981
The composition of the wax layer of some flue-cured tobaccos that were grown under the same conditions in the U. S. A., Brazil and Germany was examined by means of GC and GC/MS.
Heemann V.   +3 more
doaj   +1 more source

A Novel Device for Functional Evaluation of Gas Sensing Layers

open access: yesProceedings, 2018
Chemical gas sensors are operated at elevated temperatures and the actual temperature has a tremendous influence on sensitivity and selectivity. From that perspective, precise temperature control over the chip is an absolute requirement. Next to a stable
Guenther A. Maier   +3 more
doaj   +1 more source

Nonparametric Regression on Latent Covariates with an Application to Semiparametric GARCH-in-Mean Models [PDF]

open access: yes
We consider time series models in which the conditional mean of the response variable given the past depends on latent covariates. We assume that the covariates can be estimated consistently and use an iterative nonparametric kernel smoothing procedure ...
Christian Conrad, Enno Mammen
core  

Positive‐Tone Nanolithography of Antimony Trisulfide with Femtosecond Laser Wet‐Etching

open access: yesAdvanced Functional Materials, EarlyView.
A butyldithiocarbamic acid (BDCA) etchant is used to fabricate various micro‐ and nanoscale structures on amorphous antimony trisulfide (a‐Sb2S3) thin film via femtosecond laser etching. Numerical analysis and experimental results elucidate the patterning mechanism on gold (reflective) and quartz (transmissive) substrates.
Abhrodeep Dey   +12 more
wiley   +1 more source

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