Results 81 to 90 of about 22,040 (246)

A Redox‐Buffering System for Stabilizing the Lattice Oxygen Mechanism in CeO2/FeOOH Heterostructure Electrocatalysts for Highly Stable Anion Exchange Membrane Water Electrolyzers

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
The CeO2/FeOOH heterostructure catalyst was synthesized via a facile co‐precipitation strategy. The work‐function disparity between CeO2 and FeOOH drives interfacial electron redistribution, thereby optimizing the OER pathway. Moreover, the interfacial Ce3+/Ce4+ couple establishes a “redox‐buffering system” that suppresses Fe dissolution and enhances ...
Daehyun Kim, Seunghwan Jo, Jeong In Jeon, Jung Inn Sohn, John Hong   +4 more
wiley   +1 more source

Ionophore-based potentiometric PVC membrane sensors for determination of phenobarbitone in pharmaceutical formulations

Acta Pharmaceutica, 2016
The fabrication and development of two polyvinyl chloride (PVC) membrane sensors for assaying phenobarbitone sodium are described. Sensors 1 and 2 were fabricated utilizing β- or γ-cyclodextrin as ionophore in the presence of tridodecylmethylammonium ...
Alrabiah Haitham, Al-Majed Abdulrahman, Abounassif Mohammed, Mostafa Gamal A.E.   +3 more
doaj   +1 more source

Development of miniature all-solid-state potentiometric sensing system [PDF]

, 2010
A procedure for the development of a pen-like, multi-electrode potentiometric sensing platform is described. The platform comprises a seven-in-one electrode incorporating all-solid-state ion-selective and reference electrodes based on the conductive ...
Anastasova-Ivanova, Salzitsa, Bobacka, Johan, Danielewski, Marek, Diamond, Dermot, Lewenstam, Andrzej, Mattinen, Ulriika, Migdalski, Jan, Radu, Aleksandar   +7 more
core   +1 more source

Chemistry Composition and Bioaccessibility Study of Phenolic Compounds and Carotenoids of New Brazilian Biofortified Sweet Potato “CIP BRS Nuti”

Food Chemistry International, EarlyView.
Phenolic compounds of sweet potato CIP BRS Nuti were evaluated for the first time. Catechin, epicatechin, and procyanidin B1 exhibited high bioaccessibility. ABSTRACT Sweet potatoes biofortified in carotenoids have been an alternative to combat malnutrition in vulnerable populations. This work is the first comprehensive study of the bioactive potential
Maria Carla Cândido da Silva, Larissa Iris da Silva Monteiro, Darlanna de Souza Prado, Ana Júlia de Brito Araújo Carvalho, Marciane Magnani, Alexandre Furtado Silveira Mello, Erbs Cintra de Souza Gomes, Marcos dos Santos Lima   +7 more
wiley   +1 more source

Next-Generation Potentiometric Sensors: A Review of Flexible and Wearable Technologies

Biosensors
In recent years, the field of wearable sensors has undergone significant evolution, emerging as a pivotal topic of research due to the capacity of such sensors to gather physiological data during various human activities. Transitioning from basic fitness
Mahmoud Abdelwahab Fathy, Philippe Bühlmann   +1 more
doaj   +1 more source

Controlling charge injection in organic field-effect transistors using self-assembled monolayers [PDF]

, 2006
We have studied charge injection across the metal/organic semiconductor interface in bottom-contact poly(3-hexylthiophene) (P3HT) field-effect transistors, with Au source and drain electrodes modified by self-assembled monolayers (SAMs) prior to active ...
Ciszek, J. W., Corley, D. A., Hamadani, B. H., Natelson, D., Tour, J. M.   +4 more
core   +2 more sources

CO2 Fluxes and Soil Responses to Straw and Herbicide in Peanut

Land Degradation &Development, EarlyView.
ABSTRACT Peanut cultivation plays an important agronomic role in Brazil, especially in rotation with sugarcane, promoting biological nitrogen fixation and improving soil quality. This study aimed to test the hypothesis that the combined use of sugarcane mulch, peanut cultivation, and herbicide application would affect soil CO₂ fluxes, soil chemical ...
Heytor Lemos Martins, Vitor Adriano Benedito, Arianis Ibeth Santos‐Nicolella, Treyce Stephane Cristo Tavares, Rodrigo Baratiere Perim, Vanesca Korasaki, Newton La Scala Jr., Pedro Luís da Costa Aguiar Alves   +7 more
wiley   +1 more source

Ion-selective electrodes with solid contact for heavy metals determination

E3S Web of Conferences, 2013
Potentiometric properties of ion-selective electrodes with solid contact for lead, cadmium and zinc determination were investigated. The ionic liquids (ILs) alkyl methyl imidazolium chlorides are used as lipophilic ionic additive to the membrane phase ...
Wardak C., Lenik J.
doaj   +1 more source

Comparação entre dois métodos de determinação de cálcio ionizável em amostras de recém-nascidos [PDF]

, 2013
Changes in ionized calcium (iCa) concentration seem to occur in newborns when the calcium supply from the mother is disconnected at birth, and a related hypocalcemia is produced. Thus, measurement of iCa is of particular importance in newborns.
Azzalis, Ligia Ajaime, Basseto, Thaís P., Caputo, Luciana Zambelli, Feder, David, Fonseca, Alexandre Luiz Affonso, Fonseca, Fernando Luiz Affonso, Junqueira, Virginia Berlanga Campos, Pereira, Edimar Cristiano   +7 more
core   +2 more sources

Critical evaluation of three cryo‐EM structures of particulate methane monooxygenase by quantum refinement

Acta Crystallographica Section D, EarlyView.
We have studied the copper sites in three cryogenic electron‐microscopy structures of particulate methane monooxygenase with quantum refinement. We show that the CuA, CuC and CuD sites are correctly modelled and that the CuB site is mononuclear in all structures, whereas we find no support for copper in the suggested trinuclear active site or two sites
Gayathri Yuvaraj, Kristoffer J. M. Lundgren, Elija Veenman, Esko Oksanen, Ulf Ryde   +4 more
wiley   +1 more source