Results 61 to 70 of about 561,896 (299)

Construction and Analytical Application of Ion Selective Bromazepam Sensor

open access: yesInternational Journal of Electrochemical Science, 2009
Construction and performance characteristics of a novel ion – selective membrane sensors for determining bromazepam drug are described. The sensor was based on the use of bromazepam – phosphotungestiate ion association complex as an electroactive ...
Amirh S. Al Attas
doaj   +1 more source

Nonlinear three wave interaction in pair plasmas [PDF]

open access: yes, 2010
It is shown that nonlinear three-wave interaction, described by vector-product type nonlinearities, in pair plasmas implies much more restrictive conditions for a double energy transfer, as compared to electron-ion ...
J. Vranjes, J. Weiland, S. Poedts
core   +3 more sources

AAA+ protein unfoldases—the Moirai of the proteome

open access: yesFEBS Letters, EarlyView.
AAA+ unfoldases are essential molecular motors that power protein degradation and disaggregation. This review integrates recent cryo‐electron microscopy (cryo‐EM) structures and single‐molecule biophysical data to reconcile competing models of substrate translocation.
Stavros Azinas, Marta Carroni
wiley   +1 more source

A Detailed Thermodynamic Description of Ion Pair Binding by a Calix[4]arene Derivative Containing Urea and Amide Functionalities

open access: yesMolecules
Receptors capable of binding both positive and negative ions are an important domain of supramolecular chemistry with valuable application potential. A Complete thermodynamic description of the equilibria related to ion pair recognition is beneficial in ...
Marija Cvetnić   +5 more
doaj   +1 more source

Potentiometric Determination of Betahistine in Pharmaceutical Formulations by Drug Selective Sensors

open access: yesInternational Journal of Electrochemical Science, 2015
Betahistine is histamine like drug that acts as both a partial histamine H1 receptor agonist and as a histamine H3 receptor antagonist. This research introduces design and construction of a PVC membrane sensor and nano-composite carbon paste electrode ...
Mohammad Reza Ganjali   +3 more
doaj   +1 more source

Nucleophilic Addition to (3-Methylpentadienyl)iron(1+) Cations: Counterion Control of Regioselectivity; Application to the Enantioselective Synthesis of 4,5-Disubstituted Cyclohexenones [PDF]

open access: yes, 2006
The regioselectivity of malonate addition to (3-methylpentadienyl)Fe(CO)3+ is controlled by the malonate−counterion association. The Li+ salt of malonate proceeds via C1 nucleophilic attack to afford the 1,3Z-diene complex 4a, while reaction of highly ...
Chaudhury, Subhabrata   +1 more
core   +1 more source

pH‐mediated activation of the lysosomal arginine sensor SLC38A9

open access: yesFEBS Letters, EarlyView.
Cells monitor nutrient levels via the lysosomal transporter SLC38A9 to activate the mechanistic target of rapamycin complex 1 (mTORC1). This study reveals that SLC38A9 function is regulated by pH. We identified histidine 544 as a critical pH sensor that undergoes conformational changes to control amino acid efflux from lysosomes; therefore, it ...
Xuelang Mu, Ampon Sae Her, Tamir Gonen
wiley   +1 more source

Spectrophotometric Determination of Gemifloxacin Mesylate in Pharmaceutical Formulations Through Ion-Pair Complex Formation

open access: yesE-Journal of Chemistry, 2008
Four simple and sensitive ion-pairing spectrophotometric methods have been described for the assay of gemifloxacin mesylate (GFX) either in pure form or in pharmaceutical formulations.
Marothu Vamsi Krishna   +1 more
doaj   +1 more source

Clenbuterol Determination in Pharmaceutical Formulation by Potentiometric Membrane Sensor

open access: yesInternational Journal of Electrochemical Science, 2015
Clenbuterol is a selective β2-adrenoceptor agonist which has been known as a thermogenic drug. This work introduces design and construction of a PVC membrane sensor for fast and simple determination of Clenbuterol in pharmaceutical formulation.
Farnoush Faridbod, Masoomeh Dorrani
doaj   +1 more source

Potential therapeutic targeting of BKCa channels in glioblastoma treatment

open access: yesMolecular Oncology, EarlyView.
This review summarizes current insights into the role of BKCa and mitoBKCa channels in glioblastoma biology, their potential classification as oncochannels, and the emerging pharmacological strategies targeting these channels, emphasizing the translational challenges in developing BKCa‐directed therapies for glioblastoma treatment.
Kamila Maliszewska‐Olejniczak   +4 more
wiley   +1 more source

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