Replacement dolomite in the Latemar carbonate buildup developed when limestone was infiltrated by reactive fluid. Minor-element, trace-element, and oxygen and carbon isotope compositions of dolomite and precursor limestone constrain the origin of the fluid and fundamental aspects of the flow. Inferred salinity (similar to seawater); temperature (45°–85°C); Sr/Sr (0.7076–0.7079); Ca/Mg (<1.4); a...

The activity concentrations of 40K, 232Th, and 238U in the characteristic rocks of the Modane-Aussois region (Western Alps, France) were determined using an HPGe gamma-ray spectrometry system. The activity concentrations of 40K varied from 18 Bqkg-1 (limestone dolomite) to 392 Bqkg-1 (calcschist), while those of 232Th varied from 0.7 Bqkg-1 (limestone dolomite) to 18 Bqkg-1 (calcschist). The ac...

results the batch kinetics experiments showed that nom adsorption by the adsorbents followed the pseudo-second order model. results showed that the acidic ph is optimum for adsorption of nom by smz. conclusions the findings of this study show that natural zeolite modified with sodium dodecyl sulfate, as a cationic surfactant, is a promising adsorbent for removal of nom. materials and methods in...

In the area of Micro Electro Mechanical Systems (MEMS), bulk micromachining and surface micromachining are two main technologies. Bulk micromachining defines structures by selectively etching inside a substrate while surface micromachining uses a succession of thin film deposition and selective etching on top of a substrate. The two technologies are quite different, resulting in different dimen...

The benefits of surfactant replacement therapy for neona-tal respiratory distress syndrome (RDS) have been well documented in several randomised trials, and this treatment is now part of routine clinical management of babies with immature lungs. Meta-analysis of data from a large number of babies treated in controlled trials has confirmed lower mortality and reduced incidence of complications ,...

The potential of surfactant modified zeolites as adsorbents for mycotoxins and as carrier of the pharmaceutical drugs was investigated. Ochratoxin A OCHRA (mycotoxin) and diclofenac sodium DS (anti-inflamatory drug) were used as model substances. Surface of the clinoptilolite was modified with different amounts of quaternary ammonium ions (hexadecyltrimethyl ammonium HDTMA or octadecyldimethylb...

Lipid layers supported on hydrophilic polymer cushions have attracted considerable attention, not only because they provide a cell-like environment for transmembrane protein incorporation, but also because the lipid membrane creates a thin barrier that is able to maintain a chemical gradient.1 These properties have inspired the preparation of novel types of hybrids that combine lipids and hydro...