@article{PaulssenKongArciszewskietal.2012, author = {Paulßen, Elisabeth and Kong, Shushu and Arciszewski, Pawel and Wielbalck, Swantje and Abram, Ulrich}, title = {Aryl and NHC Compounds of Technetium and Rhenium}, series = {Journal of the American Chemical Society}, volume = {134}, journal = {Journal of the American Chemical Society}, number = {22}, publisher = {ACS Publications}, address = {Washington, DC}, issn = {1520-5126}, doi = {10.1021/ja3033718}, pages = {9118 -- 9121}, year = {2012}, abstract = {Air- and water-stable phenyl complexes with nitridotechnetium(V) cores can be prepared by straightforward procedures. [TcNPh2(PPh3)2] is formed by the reaction of [TcNCl2(PPh3)2] with PhLi. The analogous N-heterocyclic carbene (NHC) compound [TcNPh2(HLPh)2], where HLPh is 1,3,4-triphenyl-1,2,4-triazol-5-ylidene, is available from (NBu4)[TcNCl4] and HLPh or its methoxo-protected form. The latter compound allows the comparison of different Tc-C bonds within one compound. Surprisingly, the Tc chemistry with such NHCs does not resemble that of corresponding Re complexes, where CH activation and orthometalation dominate.}, language = {en} } @article{PaulssenKueckmannAbram2007, author = {Paulßen, Elisabeth and K{\"u}ckmann, Theresa and Abram, Ulrich}, title = {Silver(I) Complexes of 1,3-Dialkyl-4,5-dimethylimidazol-2-ylidenes and their Use as Precursors for the Synthesis of Rhenium(V) NHC Complexes}, series = {Zeitschrift f{\"u}r anorganische und allgemeine Chemie : ZAAC = Journal of inorganic and general chemistry}, volume = {633}, journal = {Zeitschrift f{\"u}r anorganische und allgemeine Chemie : ZAAC = Journal of inorganic and general chemistry}, number = {5-6}, issn = {1521-3749}, doi = {10.1002/zaac.200700021}, pages = {830 -- 834}, year = {2007}, language = {en} } @article{PaulssenLeLengkeeketal.2013, author = {Paulßen, Elisabeth and Le, Van So and Lengkeek, Nigel and Pellegrini, Paul and Jackson, Tim and Greguric, Ivan and Weiner, Ron}, title = {Influence of Metal Ions on the 68Ga-labeling of DOTATATE}, series = {Applied Radiation and Isotopes}, volume = {82}, journal = {Applied Radiation and Isotopes}, publisher = {Elsevier}, address = {Amsterdam}, issn = {1872-9800}, doi = {10.1016/j.apradiso.2013.08.010}, pages = {232 -- 238}, year = {2013}, language = {en} } @article{PaulssenLengkeekLeetal.2016, author = {Paulßen, Elisabeth and Lengkeek, Nigel A. and Le, Van So and Pellegrini, Paul A. and Greguric, Ivan and Weiner, Ron}, title = {The role of additives in moderating the influence of Fe(III) and Cu(II) on the radiochemical yield of [⁶⁸Ga(DOTATATE)]}, series = {Applied Radiation and Isotopes}, volume = {107}, journal = {Applied Radiation and Isotopes}, publisher = {Elsevier}, address = {Amsterdam}, issn = {1872-9800}, doi = {10.1016/j.apradiso.2015.09.008}, pages = {13 -- 16}, year = {2016}, abstract = {[⁶⁸Ga(DOTATATE)] has demonstrated its clinical usefulness. Both Fe³⁺ and Cu²⁺, potential contaminants in Gallium-68 generator eluent, substantially reduce the radiochemical (RC) yield of [⁶⁸Ga(DOTATATE)] if the metal/ligand ratio of 1:1 is exceeded. A variety of compounds were examined for their potential ability to reduce this effect. Most had no effect on RC yield. However, addition of phosphate diminished the influence of Fe³⁺ by likely forming an insoluble iron salt. Addition of ascorbic acid reduced Cu²⁺ and Fe³⁺ to Cu⁺ and Fe²⁺ respectively, both of which have limited impact on RC yields. At low ligand amounts (5 nmol DOTATATE), the addition of 30 nmol phosphate (0.19 mM) increased the tolerance of Fe3⁺ from 4 nmol to 10 nmol (0.06 mM), while the addition of ascorbic acid allowed high RC yields (>95\%) in the presence of 40 nmol Fe³⁺ (0.25 mM) and 100 nmol Cu²⁺ (0.63 mM). The effect of ascorbic acid was highly pH-dependant, and gave optimal results at pH 3.}, language = {en} } @article{PaulssenNgyugenKahlckeetal.2012, author = {Paulßen, Elisabeth and Ngyugen, Hung Huy and Kahlcke, Nils and Deflon, Victor M. and Abram, Ulrich}, title = {Tricarbonyltechnetium(I) and -rhenium(I) complexes with N′-thiocarbamoylpicolylbenzamidines}, series = {Polyhedron}, volume = {40}, journal = {Polyhedron}, number = {1}, publisher = {Elsevier}, address = {Amsterdam}, issn = {0277-5387}, doi = {10.1016/j.poly.2012.04.008}, pages = {153 -- 158}, year = {2012}, abstract = {N,N-Dialkylamino(thiocarbonyl)-N′-picolylbenzamidines react with (NEt4)2[M(CO)3X3] (M = Re, X = Br; M = Tc, X = Cl) under formation of neutral [M(CO)3L] complexes in high yields. The monoanionic NNS ligands bind in a facial coordination mode and can readily be modified at the (CS)NR1R2 moiety. The complexes [99Tc(CO)3(LPyMor)] and [Re(CO)3(L)] (L = LPyMor, LPyEt) were characterized by X-ray diffraction. Reactions of [99mTc(CO)3(H2O)3]+ with the N′-thiocarbamoylpicolylbenzamidines give the corresponding 99mTc complexes. The ester group in HLPyCOOEt allows linkage between biomolecules and the metal core.}, language = {en} } @article{PaulssenSchweighoeferAbram2010, author = {Paulßen, Elisabeth and Schweigh{\"o}fer, Philip V. and Abram, Ulrich}, title = {Reactions of [ReOX3(PPh3)2] Complexes (X = Cl, Br) with Phenylacetylene and the Structures of the Products}, series = {Zeitschrift f{\"u}r anorganische und allgemeine Chemie : ZAAC = Journal of inorganic and general chemistry}, volume = {636}, journal = {Zeitschrift f{\"u}r anorganische und allgemeine Chemie : ZAAC = Journal of inorganic and general chemistry}, number = {5}, publisher = {Wiley-VCH}, address = {Weinheim}, issn = {1521-3749}, doi = {10.1002/zaac.200900478}, pages = {779 -- 783}, year = {2010}, abstract = {Oxorhenium(V) complexes [ReOX3(PPh3)2] (X = Cl, Br) react with phenylacetylene under formation of complexes with ylide-type ligands. Compounds of the compositions [ReOCl3(PPh3){C(Ph)C(H)(PPh3)}] (1), [ReOBr3(OPPh3){C(Ph)C(H)(PPh3)}] (2), and [ReOBr3(OPPh3){C(H)C(Ph)(PPh3)}] (3) were isolated and characterized by X-ray diffraction. They contain a ligand, which was formed by a nucleophilic attack of released PPh3 at coordinated phenylacetylene. The structures of the products show that there is no preferable position for this attack. Cleavage of the Re-C bond in 3 and dimerization of the organic ligand resulted in the formation of the [{(PPh3)(H)CC(Ph)}2]2+ cation, which crystallized as its [(ReOBr4)(OReO3)]2- salt.}, language = {en} } @book{Pawelke1969, author = {Pawelke, Siegfried}, title = {Saturation und Approximation bei Reihen mehrdimensionaler Kugelfunktionen}, publisher = {Techn. Hochsch.}, address = {Aachen}, pages = {97 S.}, year = {1969}, language = {de} } @article{Pawelke1972, author = {Pawelke, Siegfried}, title = {Ein Satz von Jacksonschen Typ f{\"u}r algebraischen Polynome}, series = {Acta scientiarum mathematicarum / Bolyai Institute, University of Szeged}, journal = {Acta scientiarum mathematicarum / Bolyai Institute, University of Szeged}, number = {33}, publisher = {n.a.}, address = {Szeged}, isbn = {0001-6969}, pages = {323 -- 336}, year = {1972}, language = {de} } @article{Pawelke1972, author = {Pawelke, Siegfried}, title = {{\"U}ber die Approximationsordnung bei Kugelfunktionen und algebraischen Polynomen}, series = {Tohoku Mathematical Journal (2)}, volume = {24}, journal = {Tohoku Mathematical Journal (2)}, number = {3}, publisher = {Tohoku University}, address = {Sendai}, isbn = {0040-8735}, doi = {10.2748/tmj/1178241489}, pages = {473 -- 486}, year = {1972}, abstract = {F{\"u}r die Approximation stetiger, 2π-periodischer Funktionen auf der reellen Achse durch trigonometrische Polynome wurde ein direkter Satz von D. Jackson 1911 [8] und die Umkehrung von S. N. Bernstein 1912 [1] bewiesen und die Ergebnisse von A. Zygmund [25] 1945 verallgemeinert. 1949 stellte M. Zamansky [25] eine Beziehung zwischen der Approximationsordnung und dem Wachstum bezϋglich n der Ableitungen der Approximationspolynome her; auf die Approximationsordnung f{\"u}r die Ableitungen der Funktion schloβ S. B. Steckin 1951. Die Umkehrung des Ergebnisses von M. Zamansky bewies G. Sunouchi 1968 [21,22], womit die Aquivalenz aller Aussagen gezeigt ist. Die {\"U}bertragung der Ergebnisse auf Approximationsoperatoren in Banachr{\"a}umen stammt von K. Scherer und P. L. Butzer [3, 4], wobei gewisse Voraussetzungen an die Operatorfolge (eine verallgemeinerte Bernsteinsche Ungleichung und eine sogenannte Jacksonsche Ungleichung) gestellt werden. An die Stelle der strukturellen Eigenschaften der Funktion, die durch das Verhalten des Stetigkeitsmoduls der Funktion charakterisiert werden, treten in allgemeinen Banachr{\"a}umen Eigenschaften des von J. Peetre [17] eingefϋhrten K-Funktionals. In dieser Arbeit wird die Approximation von Funktionen, die auf der Einheitskugel Sᵏ im Rᵏ definiert sind, durch Linearkombinationen von Kugelfunktionen untersucht. Es wird f{\"u}r diesen Fall eine Bernstein-Ungleichung und die Jackson-Ungleichung bewiesen, wenn man die Ableitung durch den Laplace-Operator auf Sᵏ ersetzt. Damit ist der oben zitierte allgemeine Satz von Butzer-Scherer anwendbar. Weiter kann man hier an Stelle des K-Funktionals einen verallgemeinerten Stetigkeitsmodul setzen. Anschlieβend wird der Spezialfall der zonalen Funktionen und ihre Approximation durch algebraische Polynome untersucht.}, language = {de} } @inproceedings{Pawelke1975, author = {Pawelke, Siegfried}, title = {Approximationstheorie mit Hilfe von Jacobi-Polynomen und Kugelfunktionen}, series = {Proceedings of the conference jointly organized by the Mathematical Institute of the Polish Academy of Sciences and the Institute of Mathematics of the Adam Mickiewicz University, held in Poznan, 22-26 August, 1972}, booktitle = {Proceedings of the conference jointly organized by the Mathematical Institute of the Polish Academy of Sciences and the Institute of Mathematics of the Adam Mickiewicz University, held in Poznan, 22-26 August, 1972}, editor = {Ciesielski, Zbigniew}, publisher = {Reichel}, address = {Dordrecht}, isbn = {90-277-0483-X}, pages = {157 -- 173}, year = {1975}, language = {de} } @article{Pawelke1980, author = {Pawelke, Siegfried}, title = {Weak smoothness conditions for the uniform convergence of Fourier-Jacobi series}, series = {Functiones et Approximatio. Commentarii Mathematici. 9 (1980)}, journal = {Functiones et Approximatio. Commentarii Mathematici. 9 (1980)}, isbn = {0208-6573}, pages = {9 -- 13}, year = {1980}, language = {en} } @article{Pawelke2000, author = {Pawelke, Siegfried}, title = {Note on Jackson and Bernstein type approximation theorems in the case of approximation by algebraic polynomial in the spaces L and C}, series = {Studia Scientiarum Mathematicarum Hungarica. 36 (2000), H. 3-4}, journal = {Studia Scientiarum Mathematicarum Hungarica. 36 (2000), H. 3-4}, isbn = {0081-6906}, pages = {353 -- 358}, year = {2000}, language = {en} } @article{PawelkeBerensButzer1968, author = {Pawelke, Siegfried and Berens, H. and Butzer, Paul L.}, title = {Limitierungsverfahren von Reihen mehrdimensionaler Kugelfunktionen und deren Saturationsverhalten}, series = {Publications of the Research Institute for Mathematical Sciences, Series A}, volume = {4}, journal = {Publications of the Research Institute for Mathematical Sciences, Series A}, number = {2}, publisher = {EMS Press}, address = {Z{\"u}rich}, issn = {0034-5318}, doi = {10.2977/prims/1195194875}, pages = {201 -- 268}, year = {1968}, abstract = {Die vorliegende Arbeit untersucht das approximationstheoretische Verhalten von Summationsprozessen von Reihen von Kugelfunktionen, sogenannten Laplace-Reihen. Zun{\"a}chst wird die Theorie der besten Approximation auf der Kugel, also die Erweiterung der S{\"a}tze von D. Jackson und S. Bernstein, skizziert. Nimmt man nun spezielle Verfahren zur Summation von Laplace-Reihen, dann lassen sich auch hier S{\"a}tze vom Jacksonschen und Bernsteinschen Typ beweisen. Dar{\"u}ber hinaus zeigen viele Verfahren ein Saturationsverhalten, d.h. es gibt eine nur vom Verfahren abh{\"a}ngige optimale Approximationsordnung. Das Saturationsproblem besteht nun darin, diejenige Klasse von Funktionen (Saturationsklasse) zu bestimmen, welche genau von der optimalen Ordnung approximiert werden.}, language = {de} } @article{PawelkeButzer1967, author = {Pawelke, Siegfried and Butzer, Paul L.}, title = {Ableitungen von trigonometrischen Approximationsprozessen}, series = {Acta scientiarum mathematicarum / Institutum Bolyaianum Universitatis Szegediensis}, volume = {28}, journal = {Acta scientiarum mathematicarum / Institutum Bolyaianum Universitatis Szegediensis}, number = {1-2}, publisher = {n.a.}, address = {Szeged}, isbn = {0001-6969}, pages = {173 -- 183}, year = {1967}, language = {de} } @article{PawelkeButzer1968, author = {Pawelke, Siegfried and Butzer, Paul L.}, title = {Semi-groups and resolvent operators}, series = {Archive for Rational Mechanics and Analysis}, volume = {30}, journal = {Archive for Rational Mechanics and Analysis}, number = {2}, publisher = {Springer}, address = {Berlin}, issn = {0003-9527}, doi = {10.1007/BF00250941}, pages = {127 -- 147}, year = {1968}, language = {en} } @article{PawelkeSchmittMeissen1990, author = {Pawelke, Siegfried and Schmitt, W. and Meissen, Th.}, title = {Aachen 3D finger. 3D digitizer for application in dentistry / Schmitt, W. ; Pawelke, S. ; Meissen, Th.}, series = {Biomedizinische Technik. 35 (1990), H. 4}, journal = {Biomedizinische Technik. 35 (1990), H. 4}, isbn = {0013-5585}, pages = {69 -- 71}, year = {1990}, language = {en} } @article{PeekenAbdelLatifBenner1985, author = {Peeken, Heinz and Abdel-Latif, Lotfie Ahmed and Benner, Joachim}, title = {Einfluss der {\"O}lversch{\"a}umung auf Axiallager mit Kreis- und Michell-Segmenten}, series = {VDI-Z : Zeitschrift f{\"u}r integrierte Produktion}, volume = {127}, journal = {VDI-Z : Zeitschrift f{\"u}r integrierte Produktion}, number = {5}, publisher = {Springer-VDI-Verl}, address = {D{\"u}sseldorf}, issn = {0042-1766}, pages = {145 -- 151}, year = {1985}, language = {de} } @inproceedings{PeekenBenner1985, author = {Peeken, Heinz and Benner, Joachim}, title = {Beeintr{\"a}chtigung des Druckaufbaus in Gleitlagern durch Schmierstoffversch{\"a}umung}, series = {Gleit- und W{\"a}lzlagerungen : Gestaltung, Berechnung, Einsatz; Tagung Neu-Ulm, 14. und 15. M{\"a}rz 1985 / VDI-Ges. Entwicklung, Konstruktion, Vertrieb. - (VDI-Berichte ; 549)}, booktitle = {Gleit- und W{\"a}lzlagerungen : Gestaltung, Berechnung, Einsatz; Tagung Neu-Ulm, 14. und 15. M{\"a}rz 1985 / VDI-Ges. Entwicklung, Konstruktion, Vertrieb. - (VDI-Berichte ; 549)}, isbn = {3-18-090549-2}, issn = {0083-5560}, pages = {373 -- 397}, year = {1985}, language = {de} } @article{PeekenBenner1984, author = {Peeken, Heinz and Benner, Joachim}, title = {Berechnung von hydrodynamischen Radial- und Axiallagern}, series = {Goldschmidt informiert : aus der Arbeit der Th. Goldschmidt AG, Chemische Fabriken}, volume = {61}, journal = {Goldschmidt informiert : aus der Arbeit der Th. Goldschmidt AG, Chemische Fabriken}, number = {2}, publisher = {Goldschmidt}, address = {Essen}, issn = {0340-8507}, pages = {42 -- 48}, year = {1984}, language = {de} } @article{PeekenBennerPlatt1989, author = {Peeken, Heinz and Benner, Joachim and Platt, Werner}, title = {Ausfallkriterien elastomerbest{\"u}ckter Wellenkupplungen}, series = {Antriebstechnik : Konstruktion, Entwicklung und Anwendung von Antrieben und Steuerungen ; Organ der Forschungsvereinigung Antriebstechnik e.V.}, volume = {28}, journal = {Antriebstechnik : Konstruktion, Entwicklung und Anwendung von Antrieben und Steuerungen ; Organ der Forschungsvereinigung Antriebstechnik e.V.}, number = {11}, publisher = {Vereinigte Fachverl.}, address = {Mainz}, issn = {0341-2652}, pages = {85 -- 88}, year = {1989}, language = {de} }