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Kinetics of force development and relaxation after rapid application and removal of Ca(2+) were measured by atomic force cantilevers on subcellular bundles of myofibrils prepared from guinea pig left ventricles. Changes in the structure of individual sarcomeres were simultaneously recorded by video microscopy. Upon Ca(2+) application, force developed with(More)
The fabrication process of buckypapers (BPs) made from stable suspensions of as-received or functionalized multi-walled carbon nanotubes (MWCNTs) with high purity (97.5 wt%, Baytubes), their characterization and their utilization towards novel biofuel cell electrode applications are reported. The BPs can vary in thickness between 1 μm and 200 μm, are(More)
The AGD library provides algorithms, data structures, and tools to create geometric representations of graphs and aims at bridging the gap between theory and practice in the area of graph drawing. It consists of C++ classes and is built on top of the library of efficient data types and algorithms LEDA; an optional add-on to AGD requires ABACUS, a framework(More)
Recent advances in the realization of individual molecular-scale electronic devices emphasize the need for novel tools and concepts capable of assembling such devices into large-scale functional circuits. We demonstrated sequence-specific molecular lithography on substrate DNA molecules by harnessing homologous recombination by RecA protein. In a(More)
Attosecond science is based on steering electrons with the electric field of well controlled femtosecond laser pulses. It has led to the generation of extreme-ultraviolet pulses with a duration of less than 100 attoseconds (ref. 3; 1 as = 10(-18) s), to the measurement of intramolecular dynamics (by diffraction of an electron taken from the molecule under(More)
The INCOSE Systems Engineering Handbook is the official INCOSE reference document for understanding systems engineering (SE) methods and conducting SE activities. Over the years, the Handbook has evolved to accommodate advances in the SE discipline and now serves as the basis for the Certified Systems Engineering Professional (CSEP) exam. Due to its(More)
An in-line electron hologram of an individual f1.K phage was recorded with a purpose-built low energy electron point source (LEEPS) microscope. Cryo-microscopic methods were employed to prepare the specimen so that a single phage could be presented to the coherent low energy electrons: An aqueous phage suspension was applied to a thin carbon membrane with(More)
A facile method for the preparation of single Quantum Dots (QDs) in silica spheres with tunable size and optical property has been developed. A time interval addition of silica precursor method has been used to increase the size of the silica shell and in parallel tuning the photoluminescence property. The resulting CdSe/ZnS/SiO(2) nanocomposites were(More)
Wireless ad-hoc and sensor networks play a vital role in an ever-growing number of applications ranging from environmental monitoring over vehicular communication to home automation. Security and privacy issues pose a big challenge for the widespread adoption of these networks, especially in the automotive domain. The two most essential security services(More)
Wireless Sensor Networks pose special requirements to the deployed security algorithms, due to their unique properties: a single sensor node has great restrictions in terms of computing power, available memory and available energy. It is nevertheless desirable for the messages exchanged over the air interface to be secure against eavesdropping and forging.(More)