The use of a quartz crystal microbalance (QCM) for monitorin g in situ the immobilization of singlestrand DNA marked with mercaptol group at the 5'-end on the surface of a gold-filled 7.995 MHz AT-cut quartz crystal by Au–S bond with the self-assembly technique is reported. The hybridization of ssDNA with complementary 10-mer ODN and 8-mer ODN is described. The QCM was also employed to analyze ...

A respiratory monitoring system based on a quartz crystal microbalance (QCM) sensor with a functional film was designed and investigated. Porphyrins 5,10,15,20-tetrakis-(4-sulfophenyl)-21H,23H-porphine (TSPP) and 5,10,15,20-tetrakis-(4-sulfophenyl)-21H, 23H-porphine manganese (III) chloride (MnTSPP) used as sensitive elements were assembled with a poly(diallyldimethyl ammonium chloride) (PDDA)....

Quartz Crystal Microbalance (QCM) biosensor technology was used to study the interaction of the DNA-binding domain (DBD) of the transcription factor RXRα with immobilized specific (DR1) and unspecific (DR1neg) DNA oligoduplexes. We identify the QCM sensor frequency at the susceptance minimum (fBmin) as a better measuring parameter, and we show that fBmin is proportional to the mass adsorbed at ...

The quartz crystal microbalance (QCM) is a simple, cost effective, high-resolution mass sensing technique, based upon the piezoelectric effect. As a methodology, the QCM evolved a solution measurement capability in largely analytical chemistry and electrochemistry applications due to its sensitive solution-surface interface measurement capability. The technique possesses a wide detection range....

This thesis is concerned with the interfacial behaviour of surfactants at solid-liquid interfaces. The main technique used for the adsorption measurements during this thesis work was the Quartz Crystal Microbalance-Dissipation (QCM-D). This technique allows both the adsorbed amount, as evaluated as a change in frequency (∆f), and the change in the dissipation factor (∆D) that is a measure of th...

Morphological evolution and swelling were observed in the zinc phthalocyanine (ZnPc) layer on a quartz crystal microbalance (QCM) sensor treated with annealing. The morphology affects during analyte injection. effect can shorten QCM recovery time. ZnPc was deposited surface of polystyrene/QCM by evaporation technique. annealing process conducted for 1 h at 3 temperature variations: 100, 150, 22...

This year we participate in the TREC Session Track Task 1. We adopt the Query Change Model (QCM), weighted QCM, re-ranking, clustering, and error analysis in our approaches. The QCM retrieval model is employed to combine all queries in a session. QCM allows documents that are relevant to any query in a session to appear in the final retrieval list. Weighted QCM combines queries unevenly based o...

The development of more efficient utilization of biomass has received increased attention in recent years. Cellulases play an important role in processing biomass through advanced biotechnological approaches. Both the development and the application of cellulases require an understanding of the activities of these enzymes. A new method to determine the activity of cellulase has been developed u...

PURPOSE The primary purpose of this study is to propose a method for the simultaneous quantitative three-dimensional (3D) mapping of conductivity and susceptibility using double-echo ultrashort echo time (UTE) imaging. The secondary purpose is to investigate the changes of these properties over time during in vitro hematoma evolution in blood samples. METHODS The first and second set of echo ...