Potential release of soil colloids into groundwater has attracted considerable attention because of their association with heavy metals. Much effort has been focused on using colloid-depositionbased parameters (batch experiment) to predict colloid release in soils (column experiment), though they are two separate processes. In this paper, relative colloid stability ratio was estimated and used ...

The results of ZnS photodeposition from aqueous ZnS colloid solutions by KrF laser irradiation at 248 nm are given. In this process, the photoexcitation of ZnS colloid particles initiates complex redox processes, resulting in simultaneous ZnS thin film photodeposition and Zn particle precipitation in the bulk of the reaction cell. The zinc-based layers, which were deposited onto quartz substrat...

Maintenance and restoration of intravascular volume are essential tasks of critical care management to achieve sufficient organ function and to avoid multiple organ failure in critically ill patients. Inadequate intravascular volume followed by impaired renal perfusion is the predominate cause of acute renal failure. Crystalloid solutions are the first choice to correct fluid and electrolyte de...

OBJECTIVE To compare the effects of crystalloid and colloid solutions, tranexamic acid and epsilon-aminocaproic acid on the need for allogenic blood transfusion and on coagulation and fibrinolysis parameters. METHODS We conducted the study in the Anesthesiology and Reanimation Department of Hacettepe University Medical Faculty, Ankara, Turkey between March 2004 and April 2005. The study inclu...

In this paper, we propose two new approaches for preparing active substrates for surface-enhanced Raman scattering (SERS). In the first approach (method 1), one transfers AgI nanoparticles capped by negatively charged mercaptoacetic acid from a AgI colloid solution onto a quartz slide and then deoxidizes AgI to Ag nanoparticles on the substrate. The second approach (method 2) deoxidizes AgI to ...

The crystalloid – colloid debate regarding the most effective intravenous fluid for resuscitation from haemorrhagic shock has been raging over the past 60 years, and still continues without a satisfactory resolution (1). Crystalloid solutions are essentially isotonic salt solutions (270-310 mOsm/L) and have been in use since the 1800s but their use became widespread during World War I. Normal s...