@article{ThomasWebsterRhedeetal.2006, author = {Thomas, Rainer and Webster, J. D. and Rhede, Dieter and Seifert, W. and Rickers, Karen and F{\"o}rster, Hans-J{\"u}rgen and Heinrich, Wilhelm and Davidson, P.}, title = {The transition from peraluminous to peralkaline granitic melts: Evidence from melt inclusions and accessory minerals}, series = {Lithos : an international journal of mineralogy, petrology, and geochemistry}, volume = {91}, journal = {Lithos : an international journal of mineralogy, petrology, and geochemistry}, number = {1-4}, publisher = {Elsevier}, address = {Amsterdam}, issn = {0024-4937}, doi = {10.1016/j.lithos.2006.03.013}, pages = {137 -- 149}, year = {2006}, abstract = {Fractional crystallization of peraluminous F- and H(2)O-rich granite magmas progressively enriches the remaining melt with volatiles. We show that, at saturation, the melt may separate into two immiscible conjugate melt fractions, one of the fractions shows increasing peraluminosity and the other increasing peralkalinity. These melt fractions also fractionate the incompatible elements to significantly different degrees. Coexisting melt fractions have differing chemical and physical properties and, due to their high density and viscosity contrasts, they will tend to separate readily from each other. Once separated, each melt fraction evolves independently in response to changing T/P/X conditions and further immiscibility events may occur, each generating its own conjugate pair of melt fractions. The strongly peralkaline melt fractions in particular are very reactive and commonly react until equilibrium is attained. Consequently, the peralkaline melt fraction is commonly preserved only in the isolated melt and mineral inclusions. We demonstrate that the differences between melt fractions that can be seen most clearly in differing melt inclusion compositions are also visible in the composition of the resulting ore-forming and accessory minerals, and are visible on scales from a few micrometers to hundreds of meters.}, language = {en} } @misc{ClahsenSiegmuellerPenkeetal.2013, author = {Clahsen, Harald and Siegm{\"u}ller, Julia and Penke, Martina and Schr{\"o}der, Astrid and Hofmann, Janine and Holzgrefe-Lang, Julia and Skerra, Antje and Adani, Flavia and Gagarina, Natalʹja Vladimirovna and Schr{\"o}ter, Carolin and Frieg, Hendrike and Belke, Eva and Schwab, Susanne and Seifert, Susanne and Watko, Petra and Obendrauf, Tanja and Trauntschnig, Mike and Gasteiger-Klicpera, Barbara and Adelt, Anne and Hanne, Sandra and Burchert, Frank and Swietza, Romy and Doppelbauer, Lea and Dralle, Jenny and Purat, Patricia and Webersinke, Dorothea and Schwytay, Jeannine and Stadie, Nicole and Hoppe, Carina and Heide, Judith and Marusch, Tina and von der Malsburg, Titus Raban and Bastiaanse, Roelien and Schultheiss, Corinna and Nahrstaedt, Holger and Schauer, Thomas and Seidl, Rainer Ottis and Rath, Elisa}, title = {Spektrum Patholinguistik = Schwerpunktthema: Labyrinth Grammatik: Therapie von syntaktischen St{\"o}rungen bei Kindern und Erwachsenen}, number = {6}, editor = {Fritzsche, Tom and Meyer, Corinna B. and Adelt, Anne and Roß, Jennifer}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, organization = {Verband f{\"u}r Patholinguistik e. V. (vpl)}, isbn = {978-3-86956-270-4}, issn = {1869-3822}, doi = {10.25932/publishup-6612}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-67659}, year = {2013}, abstract = {Das Herbsttreffen Patholinguistik wird seit 2007 j{\"a}hrlich vom Verband f{\"u}r Patholinguistik e.V. (vpl) durchgef{\"u}hrt. Das 6. Herbsttreffen mit dem Schwerpunktthema "Labyrinth Grammatik: Therapie von syntaktischen St{\"o}rungen bei Kindern und Erwachsenen" fand am 17.11.2012 in Potsdam statt. Im vorliegenden Tagungsband finden sich alle Beitr{\"a}ge der Veranstaltung: die vier Hauptvortr{\"a}ge zum Schwerpunkthema, die Vortr{\"a}ge aus Praxis und Forschung von vier Patholinguistinnen in der Reihe Spektrum Patholinguistik sowie die Abstracts der Posterpr{\"a}sentation.}, language = {de} } @article{KrauseWuestneckSeifertetal.1998, author = {Krause, Jens-Peter and W{\"u}stneck, Rainer and Seifert, Arndt and Schwenke, Klaus Dieter}, title = {Relaxation behaviour of spread films and coalescence stability of o/w emulsions formed by succinylated legumin from faba beans (Vicia faba L.)}, issn = {0927-7765}, year = {1998}, language = {en} } @article{SeifertRhedeFoersteretal.2009, author = {Seifert, Wolfgang and Rhede, Dieter and F{\"o}rster, Hans-J{\"u}rgen and Thomas, Rainer}, title = {Accessory minerals as fingerprints for the thermal history and geochronology of the Caledonian Rumburk granite}, issn = {0077-7757}, doi = {10.1127/0077-7757/2009/0147}, year = {2009}, abstract = {Accessory minerals of the Caledonian Rumburk granite are investigated to gain insight into its magmatic and post-magmatic evolution history. Recent geothermometers calibrated for trace elements in rutile (Zr), zircon (Ti), and quartz (Ti) were used to determine mineral-formation temperatures, which are compared with T data obtained from melt and fluid-inclusion Studies on quartz. Improved electron-microprobe analytical conditions allowed distinguishing several generations of rutile. Submicron-sized rutile needles included in quartz crystallized at around 739 +/- 13 degrees C and, thus, are evidently magmatic. Simultaneous crystallization of the high-T rutile and quartz is the favoured concept compared with an exsolution model for the needles. Th-U-total Pb dating of xenotime-(Y) by electron microprobe yielded a bimodal age distribution of 494 +/- 8 Ma (2 sigma; n = 44) and 311 +/- 8 Ma (2 sigma; n = 48), which is missing in monazite-(Ce). The older age correlates with the early Ordovician granite emplacement age Suggested by earlier isotopic Studies. The younger Carboniferous age also may be geologically reasonable, because the granite experienced a minor tectonothermal overprint during the Variscan orogenesis. However, whether this event has caused the resetting of the isotopic system in the xenotime is uncertain. This also holds for the age of the partial breakdown of monazite and xenotime into reaction coronas composed of fluorapatite, allanite-(Ce), epidote +/- clinozoisite. This alteration assemblage was likely produced already during autometasomatic reworking of the solidifying magma in Ordovician time, but it cannot be excluded that it relates to a Carboniferous fluid imprint connected with late-Variscan processes.}, language = {en} } @misc{SeifertBurkhardt1983, author = {Seifert, Rainer and Burkhardt, Constanze}, title = {Zwischen Remission und Rezidiv : Aspekte der Lebensbedingungen leuk{\"a}misch-kranker Kinder}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-59448}, year = {1983}, abstract = {Es wird der Versuch unternommen, die Lebensbedingungen leuk{\"a}misch-kranker Kinder zu verdeutlichen. Dabei werden grundlegende medizinische Fakten dieser b{\"o}sartigen Blutkrankheit unter {\"a}tiologischen, symptomatologischen und verlaufsspezifischen Aspekten er{\"o}rtert. Die f{\"u}r die Diagnose und Therapie erforderlichen medizinischen Eingriffe und Maßnahmen stellen ein wesentliches Element der psychologischen Belastung dieser jungen Patienten und ihres sozialen Umfeldes dar. Periodizit{\"a}t und Unabsehbarkeit des Krankheitsverlaufes werden als weitere Faktoren herausgestellt, welche die gesamte Pers{\"o}nlichkeit des Kranken nachhaltig beeintr{\"a}chtigen und insbesondere im emotionalaffektiven Bereich immer wieder die Entstehung von Angst und Resignation bedingen. Die Krankenhausschule wird als eine Einrichtung vorgestellt, die am ehesten die wichtige Aufgabe erf{\"u}llen kann, leuk{\"a}misch-kranke Kinder w{\"a}hrend ihrer Krankenhausaufenthalte unterrichtlich zu betreuen. Die Aufgaben des hier t{\"a}tigen Lehrers werden insbesondere unter curricularem Aspekt skizziert. Dabei wird die besondere Bedeutung des musischen Unterrichts f{\"u}r leuk{\"a}misch-kranke Kinder betont. Bei der Er{\"o}rterung der f{\"u}r die Unterrichtsorganisation in der Krankenhausschule angemessenen Sozialformen wird auf die Gruppen- und Einzelarbeit eingegangen.}, language = {de} }