A nanocasting method to fabricate nitrogen-doped dual mesoporous carbon is proposed by the carbonization of nitrile functional ionic liquid (FIL) grafted SBA-15 for the first time. These carbon materials have high nitrogen content (12.8%), large specific surface areas (763 m(2) g(-1)) and uniform rod morphologies, which are derived from FILs grafted on the surface of SBA-15. Furthermore, by adj...

A prototype miniature array of polymer membrane and solid state ion selective electrodes was developed for the purpose of performing an in-situ analysis of the soluble ionic species in Martian regolith (soil). The array contains a total of 27 electrodes for Kþ, Naþ, Ca2þ, Mg2þ, NH4 , Ba 2þ, NO 3 , Cl , and Liþ, each in triplicate. Barium electrodes were used to indirectly monitor sulfate throug...

INTRODUCTION Understanding ion diffusion phenomena in biological tissues is important for the study of signal transduction in tissue and cells. However, knowledge on ion diffusion in biological tissues is limited in literature [1-3]. In this paper, we report a new approach to investigating ion diffusion in non-charged porous materials using an electrical conductivity method. The objective of th...

Ionic activities of sodium, potassium, and chloride in serums of 26 hospitalized patients were determined with ion-specific electrodes. Comparison of the activities with the corresponding concentrations shows that the two most important parameters influencing the molar activity coefficients of these ions are the water content of serum and the binding between albumin and chloride. Quantitative e...

In human physiology it is best to refer to electrolytes, the main component in bodily fluids, in the context of extracellular fluid (ECF) volume and total water (H2O) content in the body. Electrolytes are also best referenced collectively rather than individually because they are part of an integrated physiological mechanism of H2O and ionic balance. Thirst, renal function, and hormonal respons...

2014 The kinetic behaviour of Na+ ions in (HCl) MOS capacitors has been studied by the method of thermally stimulated ionic currents (TSIC). Both charged and neutral trap states at the Si-SiO2 interface were identified. The dependence of the ion neutralization process on oxide chlorine content, and on the time and temperature of positive bias stress was investigated. REVUE DE PHYSIQUE APPLIQUÉE...

Determination by amino acid analyses of the percentage of diaminopimelic acid in the spore cortex of Bacillus megaterium and Bacillus subtilis which is involved in interpeptide cross-links gave values of 31 to 37%. This finding supports the idea that the cortex volume could undergo significant changes in response to changes in pH or ionic strength and could thus play an active role in reducing ...

New ionic liquids (ILs) are continuously introduced involving an increasing number of organic and inorganic ions. Amino acid based ILs (AAILs) represent a specific interest due to their natural origin and, allegedly, low cost. We apply our recently developed force field for imidazolium-based AAILs to investigate structure properties in their aqueous solutions via molecular dynamics (MD) simulat...

The swelling and shrinking behaviors of a series of poly(N-isopropylacrylamide) (PNIPA) hydrogels are studied in aqueous solutions of sodium dodecylbenzenesulfonate (SDBS). Between 0 and 3 mol % 2-acrylamido-2-methylpropanesulfonic acid sodium salt (AMPS) is used as an ionic comonomer in the hydrogel synthesis. It is shown that the collapsed PNIPA gels in water at 52°C start to swell above a cr...

1. A method is described for the sucrose-gradient sedimentation analysis of ribosomes in a post-mitochondrial supernatant of rat skeletal muscle. 2. An essential feature of the method involves the use of buffer of ionic strength 0.3 for homogenization of the muscle tissue. 3. Polyribosomes can be prepared by precipitation from post-mitochondrial supernatant of skeletal muscle by adjustment of t...