Fluorescent materials play a prominent role in the qualitative and quantitative measurement of scientific phenomena of importance in biotechnology and biomedical applications. Photodegradation of fluorophores is a process that determines the accuracy and sensitivity of such measurements. This is the motivation for developing methods for accurately measuring fluorophore photodegradation rates. R...

Der Kohlenstoffhaushalt der Waldökosysteme ausgewählter ICP Forests Level II-Flächen wurde im Rahmen des FutMon-Projektes mit dem Modell BIOME-BGC (Version ZALF) simuliert. Die Level II-Datenbank des vTI-Instituts für Weltforstwirtschaft sowie zusätzliche Daten nationaler Forstinstitute bildeten die Datengrundlage für die Initialisierung und Kalibrierung des Modells. Mit dem kalibrierten Modell...

In this paper, an accurate and simple small signal model of RF MOSFETs accounting for the distributed gate effect, the substrate parasitics and charge conservation is proposed. Meanwhile, a direct and accurate extraction method using linear regression approach for the components of the equivalent circuit of the MOSFET with S-parameters analysis is also proposed. The proposed model and extractio...

This paper presents a sequential methodology that combines a macroeconomic CGE model with a behavioural microsimulation, illustrates the approach with applications, and discusses its merits and shortcomings. The microsimulation, based on a household income generation model, allows for incorporating individual fixed effects into macro-micro analysis. We argue that one of the main merits of the s...

The mathematical model of the equivalent circuit of a brushless DC motor switches during the operation due to commutation. This issue causes a sudden ripple in the output torque, which is called commutation torque ripple. Brushless DC motor drives suffer from commutation torque ripple, affecting the performance of the motor in practical applications. A discrete-time switched controller is propo...

Droughts are projected to occur more frequently with future climate change of rising temperature and low precipitation. However, its impact on regional and global vegetation production is not well understood, which in turn contributes to uncertainties to model carbon sequestration under drought scenarios. Using long-term continuous eddy covariance measurements (168 site-year), we present an ana...

A number of regional Internet electronic marketplaces (REMs) have failed or are floundering, partly due to the lack of proper evaluation of their costs and benefits. This paper uses a conceptual REM Success Model to examine the costs and benefits of a REM in Western Australia. The model has been derived from an extension to the Updated DeLone & McClean IS Success Model. The findings from the ca...

t-shape profile barriers are one of the most successful barriers among many different profiles. it has been shown that using welled diffusers on the top of t-shaped barriers makes a reactive barrier that shows better performance than that of any other used profile barriers compared with their equivalent absorbent barrier. the contribution of the top surface of reactive t-profile barriers to the...

estimating snow melt water equivalent is one of the most important challenges in determining the hydrological regime in mountainous basins. there are some problematic obstacles in field observations, due to inaccessibility as well due to difficulties in snow sampling at snow covered peaks making researchers try to find indirect approaches. one of these methods in use is degree- day model that i...