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51.
Carlo Tiebe Thomas Hübert Bernhard Koch Uwe Ritter Ina Stephan 《International Journal for Ion Mobility Spectrometry》2010,13(1):17-24
The metabolism of moulds results in the formation of various microbial volatile organic compounds (MVOCs). These substances
can be used as an indicator for the presence of moulds in the indoor environment. Three different mould strains were cultivated
on culture media and IMS spectra of gaseous mould metabolites were recorded using a portable mini system with a tritium source
and a 5 cm drift cell. The headspace spectra are characteristic for mould species and their age. Typical gaseous components
of the metabolites were identified and compared with results obtained from gas chromatography using a mass spectrometer detector.
It was observed that the MVOCs formation depends on mould species and their growing stage with a maximum of MVOCs emission
occurring during the first 10 days. These preliminary results show that IMS can be applied to detect MVOCs in indoor environment
and indicate hidden mould growth. 相似文献
52.
Lettner M Mücke M Riedl S Vo C Hahn C Baur S Bochmann J Ritter S Dürr S Rempe G 《Physical review letters》2011,106(21):210503
Entanglement between stationary systems at remote locations is a key resource for quantum networks. We report on the experimental generation of remote entanglement between a single atom inside an optical cavity and a Bose-Einstein condensate (BEC). To produce this, a single photon is created in the atom-cavity system, thereby generating atom-photon entanglement. The photon is transported to the BEC and converted into a collective excitation in the BEC, thus establishing matter-matter entanglement. After a variable delay, this entanglement is converted into photon-photon entanglement. The matter-matter entanglement lifetime of 100 μs exceeds the photon duration by 2 orders of magnitude. The total fidelity of all concatenated operations is 95%. This hybrid system opens up promising perspectives in the field of quantum information. 相似文献
53.
Ernst Ritter 《Mathematische Annalen》1894,44(2-3):261-374
Ohne Zusammenfassung 相似文献
54.
55.
C-F Bond Formation for the Synthesis of Aryl Fluorides 总被引:2,自引:0,他引:2
A selection of carbon-fluorine bond-forming reactions is presented with particular focus on transition metal-mediated fluorination. A brief summary of conventional fluorination reactions is followed by a discussion of fluorination reactions mediated by palladium and silver. Investigations into the mechanism as well as the conceptual difficulty associated with transition metal-mediated carbon-fluorine bond formation are presented. 相似文献
56.
R. Albrecht T. C. Awes P. Beckmann F. Berger M. A. Bloomer D. Bock R. Bock G. Claesson G. Clewing L. Dragon A. Eklund R. L. Ferguson A. Franz S. Garpman R. Glasow H. Å. Gustafsson H. H. Gutbrod M. Hartig G. Hölker J. Idh P. Jacobs K. H. Kampert B. W. Kolb P. Kristiansson H. Löhner I. Lund F. E. Obenshain A. Oskarsson I. Otterlund T. Peitzmann S. Persson F. Plasil A. M. Poskanzer M. Purschke H. G. Ritter B. Roters S. Saini R. Santo H. R. Schmidt R. Schmidt S. P. Sørensen K. Steffens P. Steinhauser E. Stenlund D. Stüken M. L. Tincknell A. Twyhues G. R. Young 《Zeitschrift fur Physik C Particles and Fields》1992,53(2):225-237
Correlations between positive pions are investigated in the target fragmentation region of 200A GeV16O+nucleus collisions. The pions are measured with the Plastic Ball detector in the WA80 experiment at the CERN SPS. The target mass dependence of the radii and the correlation strength extracted by interferometry is studied. A new approach to the fit of the correlation function is introduced. The correlation strength and both invariant and transverse radii increase with decreasing target mass. The transverse radius for16O+C reactions appears to be much larger than the geometrical radius of the nuclei involved. For the Au target only a small fraction of the measured pions contributes to the apparent correlation. Hints for a much larger second component in16O+Au reactions are observed. Rescattering phenomena may provide a clue to understand these phenomena. 相似文献
57.
Temperature gradient gel electrophoresis: rapid detection of alpha-1-antitrypsin deficiency carriers. 总被引:1,自引:0,他引:1
The homozygous state of the alpha-1-antitrypsin (alpha 1AT) deficiency variant Z is associated with severe liver damage in early childhood and progressive lung emphysema in adulthood. A single base transition (G to A in codon 342) in exon V is causing the severe disease. The Glu342 to Lys342 mutation can be detected conventionally by isoelectric focusing (IEF) or on the DNA level by the newly developed method of temperature gradient gel electrophoresis (TGGE). It is the aim of this study to describe the TGGE technique, to compare the results with conventional IEF, and to discuss its efficiency for different diagnostic applications. 相似文献
58.
59.
Translated from Zhurnal Prikladnoi Spektroskopii, Vol. 55, No. 6, pp. 966–971, December, 1991. 相似文献
60.
Dr. Filippo Sladojevich Dr. Eric McNeill Jonas Börgel Dr. Shao‐Liang Zheng Prof. Dr. Tobias Ritter 《Angewandte Chemie (International ed. in English)》2015,54(12):3712-3716
A family of practical, liquid trifluoromethylation and pentafluoroethylation reagents is described. We show how halogen bonding can be used to obtain easily handled liquid reagents from gaseous CF3I and CF3CF2I. The synthetic utility of the new reagents is exemplified by a novel direct arene trifluoromethylation reaction as well as adaptations of other perfluoroalkylation reactions. 相似文献