Results 41 to 50 of about 335,817 (304)

A uracil nitroso amine based colorimetric sensor for the detection of Cu²⁺ ions from aqueous environment and its practical applications [PDF]

, 2015
A simple uracil nitroso amine based colorimetric chemosensor (UNA-1) has been synthesized and screened for its cation recognition ability. Sensor UNA-1 exhibited a high sensitivity and selectivity towards Cu²⁺ ions in aqueous medium in the presence of a ...
Chen, Lingxin, Devi, Manisha, Fabiao, Yu, Nandre, Jitendra P., Patil, Prashant A., Patil, Samadhan R., Patil, Umesh D., Pradeep, Chullikkattil P., Redshaw, Carl, Sahoo, Suban K., Yu Fabiao   +10 more
core   +2 more sources

Examination of the Effectiveness of Physical and Chemical Activation of Natural Bentonite for the Removal of Heavy Metal Ions from Aqueous Solutions

Adsorption Science & Technology, 2002
The ability of physically and chemically activated bentonite to adsorb copper and nickel ions from aqueous solutions was examined under various experimental conditions.
Fawzi Banat, Sameer Al-Asheh, Leena Abu-Aitah   +2 more
doaj   +1 more source

Spectroscopic and metal binding properties of a de novo metalloprotein binding a tetrazinc cluster [PDF]

, 2018
De novo design provides an attractive approach, which allows one to test and refine the principles guiding metalloproteins in defining the geometry and reactivity of their metal ion cofactors.
Chino, Marco, Degrado, William F., Leone, Linda, Lombardi, Angela, Maglio, Ornella, Pirro, Fabio, Zhang, Shao-Qing   +6 more
core   +1 more source

pH‐mediated activation of the lysosomal arginine sensor SLC38A9

FEBS 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

Adsorption of Some Transition Metal Ions [Cu(II), Fe(III), Cr(III) and Au(III)] onto Lignite-Based Activated Carbons Modified by Oxidation

Adsorption Science & Technology, 2010
The main purpose of the present work was to study the adsorption of some transition metal ions from aqueous solution via a novel porous material obtained from Bulgarian lignite (Chukurovo deposit) and its oxidized modifications. The adsorption of Cu(II),
Paunka St. Vassileva, Albena K. Detcheva
doaj   +1 more source

A New Strategy to Stabilize Oxytocin in Aqueous Solutions: I. The Effects of Divalent Metal Ions and Citrate Buffer [PDF]

, 2011
In the current study, the effect of metal ions in combination with buffers (citrate, acetate, pH 4.5) on the stability of aqueous solutions of oxytocin was investigated.
Amorij, Jean-Pierre, Avanti, Christina, Driessen, Arnold J. M., Frijlink, Henderik W., Hawe, Andrea, Hinrichs, Wouter L. J., Jiskoot, Wim, Kedrov, Alexej, Setyaningsih, Dewi, Visser, Jan   +9 more
core   +5 more sources

Chameleon sequences reveal structural effects in proteins representing micelle‐like distribution of hydrophobicity

FEBS Open Bio, EarlyView.
Amino acids sequence of two different proteins with the same sequence (chameleon sequence—black boxes) represent in 3D structure of the proteins different secondary structures: HHHH—helical and BBB—Beta‐structural. The chains folded in water environment adopt different III‐order structures in which the chameleon fragments appear to adopt similar status
Irena Roterman, Katarzyna Stapor, Leszek Konieczny, Krzysztof Gądek, Piotr Nowakowski   +4 more
wiley   +1 more source

Carbon dioxide concentrator [PDF]

, 1972
Passed exhaled air through electrochemical cell containing alkali metal carbonate aqueous solution, and utilizes platinized electrodes causing reaction of oxygen at cathode with water in electrolyte, producing hydroxyl ions which react with carbon ...
Huebscher, R. G., Williams, C. F.
core   +1 more source

Preparation and characterization of polyamidoxime chelating resin from rubberwood fibre-g-polyacrylonitrile [PDF]

, 2009
Grafted rubberwood fibre was converted to polyamidoxime ion-exchange resin in order to remove heavy metal ions from aqueous solution. The cation-exchange resin existed predominantly in the syn-hydroxyamino form. The water uptake by the resin was ca.
Ab. Rahman, Mohamad Zaki, Abuilaiwi, Faraj A., Ahmad @ Ayob, Mansor, Atieh, Muataz Ali, Ibrahim, Nor Azowa, Wan Yunus, Wan Md. Zin   +5 more
core   +1 more source

UiO‐66 metal–organic frameworks in biomedicine: From structural tunability to bioimaging, photodiagnostics, and photodynamic cancer therapy

FEBS Open Bio, EarlyView.
UiO‐66(Zr) metal–organic frameworks are chemically stable, biocompatible, and highly tunable nanomaterials. Their modular structure enables controlled drug delivery, multimodal bioimaging, and light‐activated photodynamic therapy, supporting integrated diagnostic and therapeutic (theranostic) applications in cancer and biomedical research.
Veronika Huntošová, Grigorii Rakhalskii, Miroslav Almáši   +2 more
wiley   +1 more source