Zugl.: Aachen, Techn. Hochsch., Diss., 2005.

Techn. Universiẗat, Diss., 2002--Berlin.

Universiẗat, Diss., 2005--Jena.

Zugl.: München, Univ., Diss., 2008

The photoionization of several nitrogen-containing reactive intermediates relevant in combustion processes was investigated in the gas phase employing VUV synchrotron radiation. The intermediates were either freshly prepared and stored under cryogenic temperatures during the experiment or generated in situ by vacuum flash pyrolysis of suitable precursor molecules. The iPEPICO (imaging photoelectron photoion coincidence) setups of the VUV beamlines at the Swiss Light Source and Synchrotron SOLEIL were then used to record mass-selected threshold photoelectron (TPE) spectra. TPE spectra reveal the ionization energy and vibrational structure in the cationic states can often be resolved, which enables to distinguish different isomers. Accurate ionization energies for the radicals carbonyl amidogen, pyrrolyl, and 3-picolyl, and for the closed shell molecules isocyanic acid and cyanovinylacetylene were obtained. The analysis of the dissociative photoionization of the pyrolysis precursors enables in some cases to retrieve thermochemical data. Beyond, the absolute photoionization cross section of the cyclic carbene cyclopropenylidene was determined, NEXAFS and normal Auger spectra of isocyanic acid were recorded and analyzed at the O1s, N1s, and C1s edges, and the dissociative photoionization and pyrolysis of 1,4-di-tert-butyl-1,4-azaborinine was studied. / Die Photoionisiation von stickstoffhaltigen reaktiven Intermediaten, die in Verbrennungsprozessen vorkommen, wurde in der Gasphase mit VUV Synchrotronstrahlung untersucht. Die Intermediate wurden entweder unmittelbar vor dem Experiment hergestellt und während des Experiments bei sehr niedrigen Temperaturen gehalten oder in situ durch Vakuum Flash Pyrolyse eines geeigneten Vorläufermoleküls erzeugt. Massenselektive Schwellenphotoelektronen(TPE)-Spektren wurden an den iPEPICO (imaging photoion photoelectron coincidence) Setups der VUV Strahllinien der Swiss Light Source und des Synchrotrons SOLEIL aufgenommen. Die Ionisierungsenergie kann in TPE-Spektren bestimmt werden und eine Auflösung von Schwingungsstruktur im Kation ist in vielen Fällen möglich, wodurch verschiedene Isomere unterschieden werden können. Verlässliche Ionisierungsenergien konnten für die Radikale Carbonylamidogen, Pyrrolyl und 3-Picolyl sowie für die geschlossenschaligen Moleküle Isocyansäure und Cyanovinylacetylen erhalten werden. Die Analyse der dissoziativen Photoionisation der Pyrolysevorläufer eröffnet in manchen Fällen Zugang zu thermochemischen Daten. Darüber hinaus wurde der absolute Photoionisationsquerschnitt des cyclischen Carbens Cyclopropenyliden bestimmt, wurden die NEXAFS und nicht-resonanten Auger Spektren von Isocyansäure an der O1s, N1s und C1s Kante aufgenommen und analysiert und die dissoziative Photoionisation und Pyrolyse von 1,4-di-tert-butyl-1,4-azaborinin untersucht.

<p>The agriculture in Sweden today uses chemical substances to control vermin, weed</p><p>and diseases. This usage shows through polluted subsoil water and trace elements in</p><p>the food we eat. There’s a risk that additional symptoms will arise in the future.</p><p>Our product Sha Jun, developed in 2006-2007, is an attempt to try and minimize the</p><p>need of chemicals in the agriculture. The idea started with the attempt to minimize the</p><p>usage of pesticides on the cropland. It later developed in an attempt to decrease seed</p><p>disinfectant. The spraying with seed disinfectant today is happening with a rate of 1</p><p>tonne/h. They hope one day to reach the speed of 5 tonnes/h. With our product you</p><p>reach speeds of 17.5 tonnes/h. We also eliminate the need to use the dangerous seed</p><p>disinfectant on the seed before it s stored. The market for our product in Sweden</p><p>consists of approximately 800 potential buyers. These include farms over 200 hectares</p><p>and collection centrals. It will also give ecological framers a change to decrease their</p><p>losses in useless crops. This because our method of treatment is environment-friendly.</p>

The agriculture in Sweden today uses chemical substances to control vermin, weed and diseases. This usage shows through polluted subsoil water and trace elements in the food we eat. There’s a risk that additional symptoms will arise in the future. Our product Sha Jun, developed in 2006-2007, is an attempt to try and minimize the need of chemicals in the agriculture. The idea started with the attempt to minimize the usage of pesticides on the cropland. It later developed in an attempt to decrease seed disinfectant. The spraying with seed disinfectant today is happening with a rate of 1 tonne/h. They hope one day to reach the speed of 5 tonnes/h. With our product you reach speeds of 17.5 tonnes/h. We also eliminate the need to use the dangerous seed disinfectant on the seed before it s stored. The market for our product in Sweden consists of approximately 800 potential buyers. These include farms over 200 hectares and collection centrals. It will also give ecological framers a change to decrease their losses in useless crops. This because our method of treatment is environment-friendly.

Diss. (sammanfattning) Uppsala : Univ., 2001. / Härtill 5 uppsatser.

Zugl.: München, Univ., Diss., 2008

Universiẗat-Gesamthochsch., Diss.--Paderborn, 1994.