Results 41 to 50 of about 661,992 (346)

Structural titration of Slo2.2, a Na+-dependent K+ channel

open access: yesCell, 2017
Summary The stable structural conformations that occur along the complete reaction coordinate for ion channel opening have never been observed. In this study we describe the equilibrium ensemble of structures of Slo2.2, a neuronal Na+-activated K ...
R. Hite, R. MacKinnon
semanticscholar   +1 more source

Reciclagem de PET advindo de garrafas de refrigerante pós-consumo Recycling of PET from post-consummer soft-drink bottles

open access: yesPolímeros, 1998
A reciclagem de PET pós-consumo foi investigada a partir de cinco ciclos sucessivos de moldagem por injeção. Amostras obtidas em cada passo foram submetidas a ensaios para determinar a cristalinidade, degradação, produtividade, fluidez e propriedades ...
Sandro D. Mancini   +2 more
doaj   +1 more source

Detection of protein concentrations using a pH-step titration method [PDF]

open access: yes, 1997
A stimulus-response method based on the application of a pH step is proposed for the detection of protein immobilized in a membrane on top of an ion-sensitive field-effect transistor (ISFET). The ISFET response to a step-wise change in pH, applied at the
Bergveld, P., Eijkel, J.C.T., Kruise, J.
core   +3 more sources

Perspectives on blended learning through the on-line platform, LabLessons, for Chemistry [PDF]

open access: yes, 2018
The effectiveness of blended learning was evaluated through the integration of an online chemistry platform, LabLessons. Two modules, Formation of Hydrogen and Titration, were designed by college mentors alongside classroom chemistry teachers to engage ...
Gryczka, Patrick   +6 more
core   +4 more sources

Boehm Titration Revisited (Part I): Practical Aspects for Achieving a High Precision in Quantifying Oxygen-Containing Surface Groups on Carbon Materials

open access: yes, 2018
Practical aspects of the Boehm titration method are evaluated for obtaining reliable results in the quantification of oxygen-containing surface groups in a short time.
Jan Schönherr   +3 more
semanticscholar   +1 more source

Complex Activity and Sensor Potential toward Metal Ions in Environmental Water Samples of N-Phthalimide Azo-Azomethine Dyes

open access: yesMolecules, 2021
Herein, the spectral and electrochemical characterizations of three different substituted N-phthalimide azo-azomethine (NAA) dyes (L) containing an o-hydroxy group and their NAA-M(II) chelates [M(II): Cu, Ni, Co, Pb] were reported by using UV–Vis and ...
Stela Georgieva   +3 more
doaj   +1 more source

Salinity Titration Protocol [PDF]

open access: yes, 2003
The purpose of this resource is to measure the salinity of the water using a salinity titration kit. Students will measure the salinity of saltwater using a salinity titration kit.
The GLOBE Program, UCAR (University Corporation for Atmospheric Research)
core  

On the use of electrochemical techniques to monitor free oxide content in molten fluoride media [PDF]

open access: yes, 2007
The electrochemical behaviour of oxide ions has been studied in fluoride melts(LiF/NaF eutectic) by cyclic voltammetry, square wave voltammetry and chronopotentiometry.
Barin   +19 more
core   +2 more sources

The (Glg)ABCs of cyanobacteria: modelling of glycogen synthesis and functional divergence of glycogen synthases in Synechocystis sp. PCC 6803

open access: yesFEBS Letters, EarlyView.
We reconstituted Synechocystis glycogen synthesis in vitro from purified enzymes and showed that two GlgA isoenzymes produce glycogen with different architectures: GlgA1 yields denser, highly branched glycogen, whereas GlgA2 synthesizes longer, less‐branched chains.
Kenric Lee   +3 more
wiley   +1 more source

Novel Approach to Automated Flow Titration for the Determination of Fe(III)

open access: yesMolecules, 2020
A novel approach to automated flow titration with spectrophotometric detection for the determination of Fe(III) is presented. The approach is based on the possibility of strict and simultaneous control of the flow rates of sample and titrant streams over
Joanna Kozak   +5 more
doaj   +1 more source

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