نتایج جستجو برای: analytical

تعداد نتایج: 169066  

Journal: :Organic & biomolecular chemistry 2012
Svetlana V Selivanova Linjing Mu Johanna Ungersboeck Timo Stellfeld Simon M Ametamey Roger Schibli Wolfgang Wadsak

18F radiolabelling of peptides bearing two different prosthetic groups was successfully conducted in a continuous flow microfluidic device for the first time. Radiochemical yields were dependent on precursor concentration, reaction temperature and flow rate. The choice of leaving group had a dramatic influence on the reaction outcome. Rapid reaction optimization was possible.

Journal: :iJET 2012
Marija Blagojevic Marjan Milosevic Danijela Milosevic

This study reveals comparison of behaviour patterns between students of medicine and IT students, regarding their use of forums and wiki. Olap techniques is used with in order to determine possible differences. The research was conducted based on the Moodle logs for learning management at Technical Faculty in Cacak, and Medical Faculty in Belgrade. Obtained results point towards the significant...

2013
Lucio V. Rosa Assed N. Haddad

Relative concepts of sustainability are more and more influenced by societies around the world. The construction industry, especially for building construction development, is being accused of promoting environmental impacts that range from excess use of resources to pollution generation. This paper present an application of the sustainability concept applied to buildings, as well as, a contrib...

Journal: :Vision Research 2004
T. Maddess Y. Nagai A. C. James A. Ankiewcz

A quantitative method is presented for creating a large number of classes of binary (256) and ternary (7.62 x 10(12)) textures. The binary textures are presented as black and white (contrasts -1 and 1). The ternary textures have three levels: black, white and the mean luminance gray (contrasts -1, 0 and 1). The ternary patterns in particular display a wide variety of properties, including depth...

Journal: :Lab on a chip 2010
Wolfgang-Andreas C Bauer Martin Fischlechner Chris Abell Wilhelm T S Huck

Here we present a novel surface modification method based on the sequential layer-by-layer deposition of polyelectrolytes yielding hydrophilic microchannels in PDMS-based microfluidic devices. The coatings are long-term stable and allow for the generation of monodisperse oil-in-water microdroplets even several months after the channel surface treatment. Due to the robustness of the polyelectrol...

Journal: :Analytical chemistry 2009
Sang Hyun Baek Woo-Jin Chang Ju-Yeoul Baek Dae Sung Yoon Rashid Bashir Sang Woo Lee

We present a novel dielectrophoretic technique that can be used to characterize molecular interactions inside a microfluidic device. Our approach allows functionalized beads which are initially at rest on a functionalized surface to be pulled away from the surface by the dielectrophoretic force acting on the beads. As a result, the interaction between the molecules on the surface and the beads ...

2000
Alberto O. Mendelzon Alejandro A. Vaisman

Journal: :The Journal of Automatic Chemistry 1984
Stephen A. Reber John P. Coates

Perkin-Elmer defines the term ’computer-aided chemistry’ as the application of a computer, of any size, to the solution of an analytical chemistry problem. More specifically, the computer is a tool which is applied to tasks of either a tedious, repetitive, or very complex nature so that the analytical chemist is freed to apply his reasoning power. This paper was prepared for a session on ’Solvi...

2014
Andrew Allison Charles E. M. Pearce Derek Abbott

We develop a method for systematically constructing Lagrangian functions for dissipative mechanical, electrical, and electromechanical systems. We derive the equations of motion for some typical electromechanical systems using deterministic principles that are strictly variational. We do not use any ad hoc features that are added on after the analysis has been completed, such as the Rayleigh di...

1998
M. Fjeld S. Schluep M. Rauterberg

Behaviour of expert and novice database users solving the same task was recorded. Several successful strategies were identified. Since there are more users than strategies, some users applied the same strategy. The aim was to develop methods grouping users with common strategy. Following three approaches (correlation, intersection, and exclusion), a metric among task solving behavioural sequenc...

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