Mössbauer spectrometer with YAlO3:Ce scintillation crystal

Hyperfine Interactions - A Mössbauer spectrometer has been developed using a mini transducer and a scintillation detector with a YAlO3:Ce crystal. Data acquisition is realised via the PIGGY...     

F2-laser patterning of indium tin oxide (ITO) thin film on glass substrate

This paper reports the controlled micromachining of 100 nm thick indium tin oxide (ITO) thin films on glass substrates with a vacuum-ultraviolet 157 nm F₂ laser. Partial to complete film removal was observed over a wide fluence window from 0.49 J/cm² to an optimized single pulse fluence of 4.5 J/cm² for complete film removal. Optical microscopy, atomic force microscopy, and energy dispersive X-ray analysis show little substrate or collateral damage by the laser pulse which conserved the stoichiometry, optical transparency and electrical conductivity of ITO coating adjacent to the trenches. At higher fluence, a parallel micron sized channel can be etched in the glass substrate. The high photon energy and top-hat beam homogenized optical system of the F₂ laser opens new means for direct structuring of electrodes and microchannels in biological microfluidic systems or in optoelectronics. PACS 79.20.Ds; 42.62.Cf; 42.55.Lc     

Investigation of the cell-wall loosening protein expansin as a possible additive in the enzymatic saccharification of lignocellulosic biomass

Applied Biochemistry and Biotechnology -     

Second order blended multidimensional upwind residual distribution scheme for steady and unsteady computations

Multidimensional upwind residual distribution (RD) schemes have become an appealing alternative to more widespread finite volume and finite element methods (FEM) for solving compressible fluid flows. The RD approach allows to construct nonlinear second order and non-oscillatory methods at the same time. They are routinely used for steady state calculations of the complex flow problems, e.g., 3D turbulent transonic industrial-type simulations [H. Deconinck, K. Sermeus, R. Abgrall, Status of multidimensional upwind residual distribution schemes and applications in aeronautics, AAIA Paper 2000-2328, AIAA, 2000; K. Sermeus, H. Deconinck, Drag prediction validation of a multi-dimensional upwind solver, CFD-based aircraft drag prediction and reduction, VKI Lecture Series 2003-02, Von Karman Institute for Fluid Dynamics, Chausée do Waterloo 72, B-1640 Rhode Saint Genèse, Belgium, 2003].     

Stabilisation,Analysis and Toxicokinetics of the Four Stereoisomers of the Nerve Agent Pinacolyl Methylphosphonofluoridate (Soman) in Rats

Abstract

Evidence has been accumulating in our laboratories over the last few years for a far greater in vivo persistence of the nerve agent soman than previously assumed. Such persistence may be relevant for the post-acute treatment of soman poisoning since the intact soman lingering in reversible storage sites may cause a relapse into the acute phase in poisoning and lengthen the period of recovery.     

Investigation into selective debenzylation and ring cleavage of quinazoline based heterocycles

The selective cleavage of different benzyl bonds within tetrahydroquinazoline and dihydroquinazolinone derived structures can be achieved by the usage of different reduction and debenzylation conditions thereby providing selective removal of O-benzyl protection groups as well as the cleavage of the ring structure within the quinazoline and quinazolinone systems.     

Nuclear Data for Applications

Nuclear data are numerical quantities that describe nuclear properties and nuclear interactions. Arranged into data libraries, they ultimately constitute the very basis of all nuclear applications. Nuclear data have to be measured, compiled, evaluated and validated so that users get the best and up-to-date information in an unrestricted manner. The paper provides an insight into this activity, describes the process from measurements to nuclear data services, illustrates key applications, and discusses future trends and developments.