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Scattering and coherence phenomena in the photoionization of small moleculesRolles, Daniel. Unknown Date (has links) (PDF)
Techn. University, Diss., 2005--Berlin.
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Isotopic resolution of carbon monoxide and carbon dioxide by NIR diode laser spectroscopyLau, Steffen, Salffner, Katharina, Löhmannsröben, Hans-Gerd January 2006 (has links)
Near-infrared (NIR) absorption spectroscopy with tunable diode lasers allows the simultaneous detection of the three most important isotopologues of carbon dioxide (<SUP>12</SUP>CO<SUB>2</SUB>, <SUP>13</SUP>CO<SUB>2</SUB>, <SUP>12</SUP>C<SUP>18</SUP>O<SUP>16</SUP>O) and carbon monoxide (<SUP>12</SUP>CO, <SUP>13</SUP>CO, <SUP>12</SUP>C<SUP>18</SUP>O). The flexible and compact fiber-optic tunable diode laser absorption spectrometer (TDLAS) allows selective measurements of CO<SUB>2</SUB> and CO with high isotopic resolution without sample preparation since there is no interference with water vapour. For each species, linear calibration plots with a dynamic range of four orders of magnitude and detection limits (LOD) in the range of a few ppm were obtained utilizing wavelength modulation spectroscopy (WMS) with balanced detection in a Herriott-type multipass cell. The high performance of the apparatus is illustrated by fill-evacuation-refill cycles.
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Inhaled carbon monoxide protects timedependently from loss of hypoxic pulmonary vasoconstriction in endotoxemic miceJahn, Nora, Lamberts, Regis R., Busch, Cornelius J., Voelker, Maria T., Busch, Thilo, Koel-Simmelink, Marleen J.A., Teunissen, Charlotte E., Oswald, Daniel D., Loer, Stephan A., Kaisers, Udo X. 27 October 2015 (has links) (PDF)
Background: Inhaled carbon monoxide (CO) appears to have beneficial effects on endotoxemia-induced impairment of hypoxic pulmonary vasoconstriction (HPV). This study aims to specify correct timing of CO application, it’s biochemical mechanisms and effects on inflammatory reactions.
Methods: Mice (C57BL/6; n = 86) received lipopolysaccharide (LPS, 30 mg/kg) intraperitoneally and subsequently breathed 50 ppm CO continuously during defined intervals of 3, 6, 12 or 18 h. Two control groups received saline intraperitoneally and additionally either air or CO, and one control group received LPS but breathed air only. In an
isolated lung perfusion model vasoconstrictor response to hypoxia (FiO2 = 0.01) was quantified by measurements of pulmonary artery pressure. Pulmonary capillary pressure was estimated by double occlusion technique. Further, inflammatory plasma cytokines and lung tissue mRNA of nitric-oxide-synthase-2 (NOS-2) and heme oxygenase-1 (HO-1) were measured.
Results: HPV was impaired after LPS-challenge (p < 0.01). CO exposure restored HPV-responsiveness if administered continuously for full 18 h, for the first 6 h and if given in the interval between the 3rd and 6th hour after LPS-challenge (p < 0.05). Preserved HPV was attributable to recovered arterial resistance and associated with significant reduction in
NOS-2 mRNA when compared to controls (p < 0.05). We found no effects on inflammatory plasma cytokines.
Conclusion: Low-dose CO prevented LPS-induced impairment of HPV in a time-dependent manner, associated with a decreased NOS-2 expression.
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Structure and reactivity of metal and semiconductor clusters in the gas phaseGrüne, Philipp January 2009 (has links)
Zugl.: Berlin, Techn. Univ., Diss., 2009
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The coverage dependent adsorption of carbon monoxide on copper catalysts studied by a combination of adsorption microcalorimetry, temperature programmed desorption and Fourier transform infrared spectroscopyNaumann d'Alnoncourt, Raoul. January 2005 (has links) (PDF)
Bochum, Univ., Diss., 2005.
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Cosmogenic 14CO as tracer for atmospheric chemistry and transportJöckel, Patrick. Unknown Date (has links) (PDF)
University, Diss., 2000--Heidelberg.
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Controlling turbulence and pattern formation in chemical reactionsBertram, Matthias. Unknown Date (has links) (PDF)
Techn. University, Diss., 2002--Berlin.
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Aufbau eines 500 Hz-Lasersystems zur SummenfrequenzschwingungsspektroskopieKuß, Michael. Unknown Date (has links) (PDF)
Techn. Hochsch., Diss., 2002--Aachen.
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Catalytic study of copper based catalysts for steam reforming of methanolPurnama, Herry. Unknown Date (has links) (PDF)
Techn. University, Diss., 2003--Berlin. / Erscheinungsjahr der Haupttitelstelle : 2003.
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MIR difference-frequency laser spectrometer for industrial process controlKhorsandi, Alireza. Unknown Date (has links) (PDF)
Techn. University, Diss., 2004--Clausthal.
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