Molecular recognition of DNA–protein complexes: A straightforward method combining scanning force and fluorescence microscopy

Combining scanning force and fluorescent microscopy allows simultaneous identification of labeled biomolecules and analysis of their nanometer level architectural arrangement. Fluorescent polystyrene nano-spheres were used as reliable objects for alignment of optical and topographic images. This allowed the precise localization of different fluorescence particles within complex molecular assemblies whose structure was mapped in nanometer detail topography. Our experiments reveal the versatility of this method for analysis of proteins and protein–DNA complexes.     

Feingießverfahren für hochreaktive Metalle am Beispiel Titan

Titanium is the first choice material for implants, chemical apparatus and in jewellery because of its mechanical, chemical and biological behaviour. The manufacturing of complicated formed parts can only be done with very expensive machines because of the high reactivity of the molten metal. The following paper describes a inexpensive proved technology for the production of titanium parts by an inductive heated casting machine. In comparison with conventional manufactured titanium parts the mechanical strength is only little reduced, therefore these parts could be used for nearly all applications.     

Katalysatoruntersuchungen an einer Technikumsanlage für Biomasse‐Kleinfeuerungen

In addition to the reduction of particulate matter, a catalytic supported emission reduction in small scale biomass combustion systems can also enable a conversion of toxic organic components into carbon dioxide and water. For catalyst investigations under practical conditions a special test facility was designed. The results show that products of incomplete combustion like carbon monoxide from stoves can be reduced by catalytic processes. Further developments and studies are necessary to achieve the targeted emission limits.     

Implementation of consequent stabilization method for simulation of multibodies described in absolute coordinates

In this article, we propose methods that increase numerical efficiency of dynamic simulation of spatial multibody systems described in absolute coordinates. The successive coordinate projection method efficiently stabilizes the system constraints in the case when a non-minimal set of orientation coordinates is used to describe the orientation of bodies in space. The new procedure of generation of Newton–Euler equations is shown in detail for systems with the most popular types of joints (prismatic joint, revolute joint, etc.). The proposed algorithms were tested with models of a governor mechanism and Yamaha YZF-R1 motorcycle engine. The simulation results show that the successive coordinate projection method is stable and can be implemented for complex mechanical systems.     

高性能透明尼龙材料在眼镜中的应用

眼镜的发展史，在某种程度上说，也就是新材料、新技术的发展史，正是由于新材料、新技术的不断涌现和改进，才推动了眼镜制造工艺的不断提高。     

Coupling of Fluid Flow and Deformation in Underground Formations

The extraction of fluids from deformable underground formations has resulted in surface subsidence above the formation in several field cases. This paper demonstrates the necessity of using the coupled Biot’s equations for deformation-flow problems in deformable fluid-saturated porous media, particularly for problems involving fluid extraction or injection in underground formations. It is shown that it is not possible to decouple the fluid flow and deformation fields from Biot’s theory except for idealized one-dimensional cases where the total stresses are constant and the deformation mode can be assumed. The deficiencies of the uncoupled approach are also shown via an analysis of a case involving production-induced subsidence in a hydrocarbon field. An important prediction of the coupled analysis is the increase of pore pressure above the initial value during continuous withdrawal of fluids from deformable formations.     

BCS Superfluidity in Ultracold Li-6 Gas

Recent progress toward degeneracy in ultracold Fermi gases raise hope to reach the BCS superfluuid transition in fermionic systems, the case of ⁶ Li being very favorable in view of its expected large and negative scattering length. We discuss the physical situation in the high density regime where the critical temperature is expected to be large. Indirect interaction due to the exchange of density fluctuations should play an important role. We discuss the physical points involved in our approximate calculation of the critical temperature which retains the same set of diagrams as in the paramagnon model. Near the instability threshold, the attractive interaction due to density fluctuations gives rise to a strong increase in the critical temperature, providing a clear signature of the existence of fluctuation induced interactions.     

COMPARISON OF DIFFERENT MALT ANALYSES

The results of applying three types of analytical mashing procedure—Institute of Brewing, European Brewery Convention, and Tepral systems—to the same malts are examined. Statistical correlations of the results are made. It is concluded that the main difference between the results of the Tepral method and the other two procedures is that the first gives much lower extracts when applied to malts which would be likely to be troublesome in the brewery, and is thus more discriminatory for these. The advantages of including sparging in an analytical method are pointed out.