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The adsorption of the hydrophobic anion [W(CO)(5)CN](-) to human lymphoid Jurkat cells gave rise to an additional anti-field peak in the rotational spectra of single cells, indicating that the cell membrane displayed a strong dielectric dispersion in the kilohertz to megahertz frequency range. The surface concentration of the adsorbed anion and its(More)
High-frequency electric field cages can stably trap cells and microparticles in aqueous media [1, 2]. Such cages can be made by semiconductor fabricat ion techniques and are not to be confused with electromagnetic field devices used for t rapping atomic and elementary particles [3]. The behavior of various dielectric microparticles in uniform and nonuniform(More)
Single particles can be manipulated by applying high frequencies to ultramicro electrode arrays fabricated on planar structures. Heat production can be reduced to the extent that intense electric fields can be applied even to unmodified cell culture media. Animal cells grow normally in the high field (up to 100 kV/m) between such continuously energized(More)
Biological cells and other particles can be electrically manipulated by means of negative dielectrophoresis within microchambers whose electrode geometry is of the order of the cell size. Very-high-frequency fields (50 MHz and above) and media of increased relative permittivity are especially suitable for the purpose, as shown by experimental data on(More)
Cells make use of semiflexible biopolymers such as actin or intermediate filaments to control their local viscoelastic response by dynamically adjusting the concentration and type of cross-linking molecules. The microstructure of the resulting networks mainly determines their mechanical properties. It remains an important challenge to relate structural(More)
In the sub-130nm technology regime, Design for Manufacturing (DFM) has become critically important in driving rapid market introduction of new products while achieving acceptable yield levels. As the industry aggressively scales beyond the 90nm technology generation, fabrication tools and processes are pushed to their manufacturing limits, resulting in a(More)
Drei Stunden nach i.v.-Gabe an Kaninchen ist das Antigen Meerrettich Peroxydase extrazellulär in den Marksträngen der Lymphknoten und der roten Pulpa der Milz elektronenmikroskopisch nachweisbar. Das unveränderte Antigen steht damit noch zu dieser Zeit in direktem Kontakt mit der Zellmembran der lymphoiden Zellen.
  • B. Wagner
  • Langenbecks Archiv für klinische Chirurgie
  • 2005
was durch die gleichzeitige innere Schienung der Arterienwand er]eichter t wird (Abb. 5). Kurz vor Vollendung der zweiten Nahtreihe wird der Katheter entfernt, die restlichen l~ghte gesetzt und der Blutstrom freigegeben. Erst jetzt wird der Patient dutch intravenSse Verabreichung yon I-Ieparin roll heparinisiert. Der initiale Blutverlust aus den(More)
Material und Methoden Ungetrocknete Recyclingsp~ine mit Anteilen an recycelten UF-gebundenen Spanplatten wurden im Labor 6 h tang bei 105 ~ und 130 ~C getrocknet. Sie verminderten dabei ihre Feuchte yon ca. 80% auf rund 3% und 0,8%. Sowohl ungetrocknete als auf 0,8% Feuchte getrocknete Spiine wurden 24 In in Kattwasser bei 20 ~ extrahiert. An diesen(More)