Results 31 to 40 of about 103,651 (220)

Human Engineered Heart Tissues Reproduce Trigger‐ and Substrate‐Driven Mechanisms of Ventricular Tachycardia

Advanced Science, EarlyView.
Engineered heart tissues (EHTs) derived from human iPSCs replicate mechanisms of ventricular tachycardia at the tissue level. Acquired Long‐QT conditions cause early afterdepolarizations, wavebreak, and transient rotors; in contrast, focal cryoinjury forms a stable substrate that supports ongoing reentry.
Matthew Fiedler, Alejandra Vasquez Limeta, Ernesto Reyes Sanchez, Leah Carter, Francisco Altamirano   +4 more
wiley   +1 more source

STUDY THE CHARACTERISTIES Of VARIABLE CHARGES OF SOME SELECTED SOILS FROM NORTHERN IRAQ [PDF]

Mesopotamia Journal of Agriculture, 2019
This study was carried out in three selected areas from North Iraq included (Makhmour, Shikhan and Zakho).these location Varied in annual temperature and rainfall .Nine soil samples were collected from three soil profiles (one soil profile from each ...
Saleh Mawlood, Qahtan D. Essa
doaj   +1 more source

Reference Electrode‐Free Nitrate Sensing via Differential Temperature‐Modulated Potentiometry in Printed Symmetric SC‐ISEs

Advanced Electronic Materials, EarlyView.
This work proposes and validates a method for measuring nitrate concentration with printed, solid‐state ion‐selective electrodes that does not require a stable reference electrode. The approach uses brief, localized heating pulses to generate a concentration‐dependent voltage response that is drift‐resilient and log‐linear from 0.1 to 100 mm, while ...
Lucas Lahann, William Pardis, Ana Claudia Arias   +2 more
wiley   +1 more source

A Trans‐1,2‐Diphenyl‐Substituted EDTA Platform for High‐Relaxivity Mn(II) MRI Probes

Chemistry – A European Journal, EarlyView.
Symmetric diphenyl substitution of the EDTA backbone enhances the rigidity of the Mn(II) complex and enables strong multisite interactions, providing a versatile platform for further functionalisation and conjugation towards high‐performance Mn(II)‐based MRI contrast agents.
Federico Forgione, Alessandro Nucera, Marco Ricci, Attila Benyei, Mariangela Boccalon, Zsolt Baranyai, Giovanni B. Giovenzana, Mauro Botta   +7 more
wiley   +1 more source

Determination of Bronsted Acid Sites in Porous Aluminosilicate Solid Catalysts using Volumetric and Potentiometric Titration Method [PDF]

, 2019
The Brønsted acid site was determined by using volumetric and potentiometric titration method. The result showed that the Brønsted acid sites of synthesized aluminosilicate using volumetric titration method are aluminosilicate-1: 0.5491; aluminosilicate ...
A N Kristanti, D Z Mardho, .-, N M Putri, .-, D W Saraswati, .-, N H Saputri, .-, Hartati, .-, A Purwaningsih   +6 more
core   +3 more sources

Points of Zero Charge and Potentiometric Titrations

Adsorption Science & Technology, 2003
Based on the various categories of surface charge and the definitions of points of zero charge proposed by Sposito (1984, 1998), the determination of the adsorbed proton charge (σ H ) and the point of zero net charge (PZNPC) of insoluble oxides and layer
Tao Zuyi, Chu Taiwei
doaj   +1 more source

A Complementary and Revised View on the N-Acylation of Chitosan with Hexanoyl Chloride

Marine Drugs, 2021
The modification of the biobased polymer chitosan is a broad and widely studied field. Herein, an insight into the hydrophobization of low-molecular-weight chitosan by substitution of amino functionalities with hexanoyl chloride is reported. Thereby, the
Berthold Reis, Niklas Gerlach, Christine Steinbach, Karina Haro Carrasco, Marina Oelmann, Simona Schwarz, Martin Müller, Dana Schwarz   +7 more
doaj   +1 more source

Gibbs energy minimization thermodynamics for CO2 capture by aqueous amines: Conservation laws, concentration variables, and parameter consistency

The Canadian Journal of Chemical Engineering, EarlyView.
We clarify how Gibbs‐energy‐minimization models for aqueous‐amine CO2 capture fail when conservation constraints and concentration conventions are inconsistent. Exact standard‐state conversions and Reaktoro case studies show that P(CO2)‐loading fits can mask non‐unique parameters and wrong speciation, motivating complete water‐inclusive formulations ...
William R. Smith, William Rutherford, Allan M. M. Leal   +2 more
wiley   +1 more source

Biosensors for Food Safety and Adulteration Monitoring: Applications, Smart Packaging Integration, and Pathways to Intelligent, Field‐Deployable Detection Systems

Food Safety and Health, EarlyView.
Biosensors enable rapid, sensitive, and portable detection of pathogens, contaminants, allergens, and food adulteration. Integration with smart packaging, smartphones, IoT, and machine learning supports real‐time monitoring and intelligent decision‐making, whereas microfluidics, biodegradable materials, explainable AI, and blockchain offer pathways ...
Mohima Akther Any, Abid Hassan Arnab, Liza Akter, Yusuf Chowdhury, Md. Hassan Bin Nabi, Md Abu Rayhan, Nazmul Islam, Wahidu Zzaman   +7 more
wiley   +1 more source

Equations for potentiometric titration [PDF]

Journal of Chemical Education, 1968
Examines some difficulties arising with assumptions made in a previously published experiment.
Ann Lomax, Allen J. Bard
openaire   +1 more source