Contrast Formation in Kelvin Probe Force Microscopy of Single π-Conjugated Molecules

We report the contrast formation in the local contact potential difference (LCPD) measured by Kelvin probe force microscopy (KPFM) on single charge-transfer complexes (CTCs) on a NaCl bilayer on Cu(111). At different tip heights, we found quantitatively different LCPD contrasts that characterize different properties of the molecule. In the small distance regime, the tip penetrates the electron density of the molecule, and the contrast is related to the size and topography of the electron shell of the molecule. For larger distances, the LCPD contrast corresponds to the electrostatic field above the molecule. However, in the medium-distance regime, that is, for tip heights similar to the size of the molecule, the nonspherical distribution of π- and σ-electrons often conceals the effect of the partial charges within the molecule. Only for large distances does the LCPD map converge toward the simple field of a dipole for a polar molecule.

A highly sensitive TTF-functionalised probe for the determination of physiological thiols and its application in tumor cells

A tetrathiafulvalene (TTF)-fused piazselenole as a novel redox-active probe for highly sensitive determination of physiological thiols by electrochemical detection has been synthesised and successfully tested in intracellular non-protein thiol detection, reaching a detection limit of 10−10 M.

Aufrichtige Nachricht von den jüdischen Lehrern und ihrer zur Exegesi u. Antiquariat gehörigen Schriften : auch wie man ihnen von Glaubenssachen zu handeln ; nebst einer kleinen bibliotheca rabbinica ; imgleichen von denen redicibus der hebr. Sprache u. a. deutlichen alphabeto literaturae Hebraicae hieroglyphico ; zu einer Probe von des autoris noch nicht edierten lexico an den Tag geleget

[Verf.: Friederich Opfergelt]

Scientific Rationale of a Saturn Probe Mission

We describe the main scientific goals to be addressed by future in situ exploration of Saturn.

Probe einer freien Überseetzung des Isais Kap. 52

M.J. L-u.

Job's erste Klage : Probe einer freien Übersetzung des dritten Kapitels

Israel Kley

Probe einer metrischen Übersetzung der Propheten: Jesais, Jeremias und Ezechiel

David ben Mose Fränkel

A DNA probe for the detection of Dicrocoelium dendriticum in ants of Formica spp. and Lasius spp

Repetitive DNA sequences present in the genome of Dicrocoelium dendriticum were identified by hybridization of genomic DNA that had been digested with different restriction enzymes with 32P-labeled genomic D. dendriticum DNA. DNA fragments containing repetitive sequences were isolated from PstI-digested D. dendriticum DNA and were subcloned into a plasmid vector. Plasmids containing repetitive sequences were identified by colony hybridization. One of these plasmids, designated Ddr-IV, was isolated and used as a probe in further studies. Ddr-IV is specific for D. dendriticum since it does not hybridize to DNA isolated from other trematodes. In addition, Ddr-IV was capable of detecting D. dendriticum metacercariae in ants (Formica cunicularia, F. rufibarbis, and Lasius sp.), which act as second intermediate hosts in the parasite's life cycle. Since metacercariae constitute the infectious stage of the parasite for grazing animals, Ddr-IV will provide a useful tool for epidemiology studies of dicrocoeliosis.

Probe einer etymologisch-lexicographischen Uebersetzung des Seker Rab Dionysius Musafia's

Franz Delitzsch

Probe einiger liturgischen Lieder : Ma'ase Elohenu

M. E. Stern

Probe aus einer bald zu erscheinenden biblischen Zoologie

Abraham Basch

Probe aus einer nächstens erscheinenden Dichtung : Zeitstimmen der Dreiuneinigkeit an die Zionswächter im Judenthume

M. Isaakssohn Ernst