Microrheological studies of phospholipid monolayers, bilayers, and other Langmuir monolayer systems are traditionally performed by observing the thermal fluctuations of tracers attached to the membrane or interface. Measurements of this type obtain surface moduli that are orders of magnitude different from those obtained using macroscopic or active techniques. These large discrepancies can resu...

We developed a fluoroimmunoassay for phenytoin in serum or plasma, based on the magnetic separation technique. The method involves sheep anti-phenytoin serum coupled to magnetizable cellulose/iron oxide particles, with a fluorescein-labeled phenytoin analog as tracer. After magnetic sedimentation of the solid phase from assay mixtures, the free fraction of the tracer is aspirated, removing endo...

Ray tracers are usually regarded as off-line rendering algorithms that are too slow for interactive use. This thesis introduces techniques to accelerate ray tracing and to support interactive editing of ray-traced scenes. These techniques should be useful in many applications, such as architectural walk-throughs, modeling, and games, and will enhance both interactive and batch rendering. This t...

A mobile robot is an automatic machine that is capable of movement in a given environment. Many techniques of automatic control are proposed. A line tracer is one of the most popular robots. The line tracer goes along a white line on the floor. The authors developed a mobile robot which moves to indicated point automatically. All you have to do is to indicate a goal point. In this paper, we pro...

Characterization of the intragranular water regime within subsurface sediments: Pore volume, surface area, and mass transfer limitations" (2011). [1] Although ''intragranular'' pore space within grain aggregates, grain fractures, and mineral surface coatings may contain a relatively small fraction of the total porosity within a porous medium, it often contains a significant fraction of the reac...

The implementation of processes related to chemistry into Earth System Models and their coupling within such systems requires the consistent description of the chemical species involved. We provide a tool (written in Fortran95) to structure and manage information about constituents, hereinafter referred to as tracers, namely the Modular Earth Submodel System (MESSy) generic (i.e., infrastructur...

Proper implementation of direct injection clearance techniques to measure tumor blood flow (TBF) requires knowledge of the tracer distribution because TBF distribution is often inhomogeneous. Therefore, deuterium nuclear magnetic resonance imaging was used to follow tracer (HOD) distribution after direct injection of 10-40 microliters isotonic saline/D2O into RIF-1 tumors. Within 2 to 4 min aft...

Paper reviews recent laboratory and numerical model studies of passive gaseous tracer dispersion in the atmospheric convective boundary layer (CBL) with surface and elevated wind shears. Atmospheric measurement data used for validation of these two model techniques are briefly discussed as well. A historical overview is given of laboratory studies of dispersion in the atmospheric CBL. Model stu...

The aim of this study was to evaluate the sulphur hexafluoride (SF6) tracer technique for methane (CH4) emission measurement in sheep. Ten cryptorchid Romney sheep were involved in two indoor trials (T1 and T2), where daily CH4 emissions were individually measured both by the SF6 tracer ('tracer CH4') and by the indirect calorimetry chamber ('chamber CH4') techniques while fed on lucerne hay at...