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  • Inorganic Chemistry  (10)
  • Atopic dermatitis  (2)
  • Jaw reconstruction  (2)
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Surgical and radiologic anatomy 19 (1997), S. 217-225 
    ISSN: 1279-8517
    Keywords: Jaw reconstruction ; Iliac crest flap ; Microvascular bone transplantation ; Window resection
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The aim of this study was to improve vessel and nerve security and the harvesting procedure of the iliac crest in the microvascular reconstruction of the upper and lower jaw by iliac crest flap in cases of tumour invasion or trauma. The critical points for the surgeon in harvesting the iliac crest are the course of the deep circumflex iliac artery and lateral cutaneous nerve of the thigh in relation to the iliac crest and the position of their subsequent ramifications. Bilateral anatomical preparations of the iliac bone (total 90 dissections) were examined in 45 formalin preserved cadavers (21 male, 24 female) with the course of the vessel and nerve supply being mapped. Topographic variations of muscles, bones, vessels and nerves were documented by measurement by photographic documentation and diagrams. In 78% (70 cases) a standard-type arrangement with a single main vessel coming from the external iliac artery above the inguinal ligament and crossing the upper part of the iliac crest with second ramifications was observed. In 12% (11 cases) the main vessel was observed to be 2-3 cm below the iliac crest, in 7% (6 cases) a second main branch of the deep circumflex iliac artery was found to run parallel to the iliac crest. In other cases the following variations were observed: one main vessel without ramification, separate branching of the main vessel and ramifications or common trunks of the deep and superficial circumflex iliac arteries. Because of these results it might be possible to perform window resection of the iliac crest in some cases rather than bloc resection: this may have postoperative advantages for the patient.
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Surgical and radiologic anatomy 19 (1997), S. 217-225 
    ISSN: 1279-8517
    Keywords: Jaw reconstruction ; Iliac crest flap ; Microvascular bone transplantation ; Window resection
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Résumé Le but de cette étude était d'améliorer la fiabilité et la technique de la reconstruction maxillaire et mandibulaire par transfert micro-vascularisé de la crête iliaque en cas de lésion tumorale ou traumatique. Les points critiques pour le chirurgien sont le trajet des vaisseaux principaux (l'a. circonflexe iliaque profonde) et des nerfs (n. cutané latéral de la cuisse) par rapport à la crête iliaque, et la position de leurs ramifications. Dans ce but, 45 cadavres formolés (21 hommes, 24 femmes) ont été utilisés par préparation anatomique bilatérale des os coxaux (90 dissections au total) et cartographie des vaisseaux et des nerfs. Les principaux résultats s'appuyent sur les mesures des variations topographiques des muscles, des os, des vaisseaux et des nerfs, sur des documents photographiques et des dessins. Dans 70 cas (78 %) nous avons trouvé une distribution typique avec un seul vaisseau principal issu de l'a. iliaque externe, né au-dessus du lig. inguinal, croisant la partie supérieure de la crête iliaque et se ramifiant secondairement. Dans 11 cas (12 %), nous avons trouvé une variation intéressante : un vaisseau principal courant 2 ou 3 cm au-dessous de la crête iliaque. Dans 6 cas (7 %), nous avons trouvé un second vaisseau principal issu de l'a. circonflexe iliaque profonde, courant parallèlement à la crête iliaque. Dans les autres cas, nous avons trouvé un vaisseau principal non ramifié, des naissances séparées de l'artère principale, des ramifications des troncs communs des aa. circonflexes iliaques profonde et superficielle. Grâce à ces résultats, nous pouvons envisager la possibilité d'une résection fenêtrée de la crête iliaque dans des cas particuliers, de préférence à une résection monobloc, ce qui présente plusieurs avantages post-opératoires pour les patients.
    Notes: Summary The aim of this study was to improve vessel and nerve security and the harvesting procedure of the iliac crest in the microvascular reconstruction of the upper and lower jaw by iliac crest flap in cases of tumour invasion or trauma. The critical points for the surgeon in harvesting the iliac crest are the course of the deep circumflex iliac artery and lateral cutaneous nerve of the thigh in relation to the iliac crest and the position of their subsequent ramifications. Bilateral anatomical preparations of the iliac bone (total 90 dissections) were examined in 45 formalin preserved cadavers (21 male, 24 female) with the course of the vessel and nerve supply being mapped. Topographic variations of muscles, bones, vessels and nerves were documented by measurement by photographic documentation and diagrams. In 78% (70 cases) a standard-type arrangement with a single main vessel coming from the external iliac artery above the inguinal ligament and crossing the upper part of the iliac crest with second ramifications was observed. In 12% (11 cases) the main vessel was observed to be 2–3 cm below the iliac crest, in 7% (6 cases) a second main branch of the deep circumflex iliac artery was found to run parallel to the iliac crest. In other cases the following variations were observed: one main vessel without ramification, separate branching of the main vessel and ramifications or common trunks of the deep and superficial circumflex iliac arteries. Because of these results it might be possible to perform window resection of the iliac crest in some cases rather than bloc resection: this may have postoperative advantages for the patient.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1432-1076
    Keywords: Key words Allergy prevention ; Atopic dermatitis ; Food allergy ; Sensitization
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The preventive effect of maternal avoidance of cow’s milk and eggs on the development of atopic dermatitis and sensitization to food allergens was studied in a prospective trial with families at high risk for atopy. intervention included encouraging exclusive breast feeding for at least 3 months and delaying the controlled introduction of solid foods. In addition, one group received a maternal diet with the complete avoidance of milk and eggs in the last trimester of pregnancy and during the period of exclusive breast feeding, another group had the same diet starting after delivery, and mothers of the third group had no dietary restrictions. The period prevalences of atopic dermatitis as well as the rates of specific sensitization to eggs and milk at 6 and 12 months were not significantly different between groups. We were unable to demonstrate a significant preventive effect of maternal diet. Conclusion While breast feeding should be promoted for children at risk for atopy, mothers can be encouraged to stay on normal diet during pregnancy and the breast feeding period.
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  • 4
    ISSN: 1432-1076
    Keywords: Allergy prevention ; Atopic dermatitis ; Food allergy ; Sensitization
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Abstract The preventive effect of maternal avoidance of cow's milk and eggs on the development of atopic dermatitis and sensitization to food allergens was studied in a prospective trial with families at high risk for atopy. intervention included encouraging exclusive breast feeding for at least 3 months and delaying the controlled introduction of solid foods. In addition, one group received a maternal diet with the complete avoidance of milk and eggs in the last trimester of pregnancy and during the period of exclusive breast feeding, another group had the same diet starting after delivery, and mothers of the third group had no dietary restrictions. The period prevalences of atopic dermatitis as well as the rates of specific sensitization to eggs and milk at 6 and 12 months were not significantly different between groups. We were unable to demonstrate a significant preventive effect of maternal diet. Conclusion While breast feeding should be promoted for children at risk for atopy, mothers can be encouraged to stay on normal diet during pregnancy and the breast feeding period.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 352 (1967), S. 156-167 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Using anatase of fine particle size, the amount of surface OH groups was determined by deuterium exchange, acetylation and reaction with SOCl2. Ca. 4.9 OH groups/100 Å2 were found after outgassing at 150°C, in contrast to an estimated surface density of 12-14 OH/100 Å2 for a fully hydroxylated surface. Thermal decomposition of the OH groups started below 200° and was complete at 350°C. Only half of the original OH groups were reformed upon rehydroxylation with H2O vapour, the surface was, however, completely rehydroxylated under liquid H2O. Very likely, the water chemisorbed below 150°C is bound in molecular form and not as OH groups.
    Notes: Die Menge der an der Oberfläche gebundenen OH-Gruppen wurde bei einem feinteiligen Anatas durch Deuterium-Austausch, Acetylierung und Reaktion mit SOCl2 bestimmt. Nach Entgasen bei 150° wurden etwa 4,9 OH-Gruppen/100 Å2 gefunden, gegenäber einer fär eine vollständig hydroxylierte Oberfläche abgeschätzten Menge von 12-14 OH/100 Å2. Der thermische Abbau der OH-Gruppenbelegung begann unterhalb 200° und war bei 350° vollständig. Bei der Einwirkung von H2O-Dampf wurde nur die Hälfte der urspränglich vorhandenen OH-Gruppen zuräckgebildet, unter flässigem H2O wurde die Oberfläche vollständing rehydroxyliert. Das unterhalb 150° chemisorbierte H2O därfte molekular, nicht in Form von OH-Gruppen vorliegen.
    Additional Material: 1 Ill.
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  • 6
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: On Hexagonal Perovskites with Cationic Vacancies. XXIX. Structure of Ba4ScReW□O12 On the Function of Octahedral Cationic Vacancies in Perovskite Stacking PolytypesThe hexagonal perovskite stacking polytype Ba4ScReW□O12 crystallizes in a rhombohedral 12 L structure (space group R3m; sequence (hhcc)3). The refined, intensity related R′ value is 6.6%. The octahedral net consists of blocks of three face connected octahedra with a central vacancy, in the two outer positions the rhenium and tungsten atoms are located; this units are linked via common corners by single octahedra, occupied with scandium.
    Notes: Die hexagonale Perowskitstapelvariante Ba4ScReW□O12 kristallisiert in einer rhomboedrischen 12 L-Struktur (R.G. R3m; Sequenz (hhcc)3). Der verfeinerte, auf die Intensitäten bezogene R′-Faktor beträgt 6,6%. Das Oktaedergerüst besteht aus Dreierguppen von flächenverknüpften Oktaedern mit zentraler Lücke in deren beiden äußeren Positionen sich das Rhenium und Wolfram befindet. Diese Einheiten sind durch mit Scandium besetzte Einzeloktaeder untereinander über Ecken verknüpft.Die Bauprinzipien von hexagonalen Sauerstoffperowskiten mit oktaedrischen Kationenfehlstellen werden mitgeteilt.The construction principles of hexagonal oxygen perovskites with octahedral, cationic vacancies are reported.
    Additional Material: 2 Ill.
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  • 7
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 372 (1970), S. 296-307 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Adsorption of various acids on anatase of high surface area was studied. Phosphoric, arsenic, sulphuric and acetic acid are specifically adsorbed; hydrochloric and perchloric acid are not adsorbed. Phosphate ions are bound on the TiO2 surface also from NaH2PO4 and Na2HPO4 solutions; sodium ions are adsorbed at the same time. OH- ions on the surface are replaced by anions such as H2PO4- in these reactions. The bonding of adsorbed phosphate ions is not purely ionic. Infrared spectra show that adsorbed acetic acid is bound as acetate. NO2 reacts with the basic OH- ions undergoing disproportionation; OH- ions are replaced by NO3- ions.Phophoric acid adsorption corresponded always to half the total OH population on five different TiO2 samples. The TiO2 surface is not completely covered by OH groups. The maximum coverage is ca. 7.5 μMol OH/m2.
    Notes: Die Adsorption verschiedener Säuren an einem feinteiligen Anatas wurde untersucht. Vor allem Phosphorsäure, Arsensäure, Schwefelsäure und Essigsäure werden spezifisch adsorbiert. Salzsäure und Perchlorsäure werden nicht adsorbiert. Phosphat-Ionen werden auch aus NaH2PO4- und Na2HPO4 -Lösung gebunden; zugleich werden Natriumionen adsorbiert. Bei diesen Reaktionen werden OH- -Ionen der TiO2-Oberfläche durch Anionen, z. B. H2PO4--Ionen, ersetzt. Die Bindung der adsorbierten H2PO4--Ionen ist nicht rein ionisch. Adsorbierte Essigsäure liegt als Acetat vor, wir das Infrarotspektrum zeigt. NO2 reagiert mit den basischen OH--Ionen der Oberfläche unter Disproportionierung; dabei werden die OH--Ionen durch NO3- ersetzt.Bei fünf untersuchten TiO2 -Präparaten entspricht die Phosphorsäure- Adsorption jeweils der Hälfte des gesamten Gehaltes an OH-Gruppen. Nur ein Teil deer Oberfläche ist mit OH-Gruppen belegt. Die maximale Belegungsdichte beträgt etwa 7,5 μMol OH/m2.
    Additional Material: 6 Ill.
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  • 8
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 372 (1970), S. 308-313 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: On reaction of anatase of high surface area with NaF solutions, OH groups of the TiO2 surface were replaced by F-. Only half the surface OH groups were exchanged in unbuffered solutions or at a pH at or slightly above the zero point of charge (pH 6.6). These are the OH groups exhibiting basic character. The remaining OH groups of acidic character exchange H+ for Na+ concurrently. They too, are replaced by fluorine in more acidic solutions (pH 4.6).
    Notes: Feinteiliger Anatas wurde mit NaF-Lösungen umgesetzt. Dabei werden OH-Gruppen der TiO2-Oberfläche durch F- ersetzt. In ungepufferter Lösung oder bei pH-Werten am oder wenig über dem isoelektrischen Punkt (pH 6,6) wird nur die Hälfte der vorhandenen OH-Gruppen. Zugleich tauschen die übrigen, sauren OH-Gruppen H+ -Ionen gegen Na+ aus. In stärker saurem Milieu (pH 4,6) werden auch die sauren OH-Gruppen durch Fluor ersetzt.
    Additional Material: 2 Ill.
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  • 9
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 470 (1980), S. 113-117 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: On Hexagonal Perovskites with Cationic Vacancies. XXIII. Rhombohedral 12 L Stacking Polytypes of Type Ba3LaBIIReVIIWVI□O12 with BnII = Mg, Co, Ni, Cu, ZnThe rhombohedral 12L perovskites with cationic vacancies of type Ba3LaBIIReW□O12 with BII = Mg, Co, Ni, Cu, Zn are isotypic. According to intensity calculations on powder patterns of Ba3LaZnReW□O12 the series crystallize in the space group R3m with the sequence (hhcc)3; the refined, intensity related R′ value is 5.7%. The octahedral net consists of blocks of three face connected octahedra with central void (ReW□O12 units), which are linked via common corners through single octahedra, occupied by zinc.
    Notes: Die rhomboedrischen 12 L-Perowskite mit Kationenfehlstellen vom Typ Ba3LaBIIReW□O12 mit BII = Mg, Co, Ni, Cu, Zn sind isostrukturell. Nach Intensitätsberechnungen an Pulverdaten von Ba3LaZnReW□O12 kristallisieren sie in der R. G. R3m mit der Sequenz (hhcc)3; der verfeinerte, auf die Intensitäten bezogene R′-Faktor beträgt 5,7%. Das Oktaedergerüst besteht aus Dreierblöcken von flächenverknüpften Oktaedern mit zentraler Lücke (ReW□O12-Einheiten) und eckenverbundenen, mit Zink besetzten Einzeloktaedern.
    Additional Material: 3 Tab.
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  • 10
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 479 (1981), S. 171-176 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Mixed-valent Perovskites of the Type Ba3BIIIPtRuO9Compounds of type Ba3BIIIPtRuO9 - with a mean oxydation state of the noble metals of +4.5 - crystallize with BIII = Gd—Lu, Y in a variant of hexagonal BaTiO3 type with ordered cationic distribution. Intensity calculations on powder data of Ba3YPtRuO9 (a = 5.888; c = 14.70 Å) gave in the space group P63/mmc (sequence (hcc)2) a refined, intensity related R′ value of 5.9%. With BIII = Eu the lattice is monoclinic and for BIII = Sm, Nd, La triclinic distorted.
    Notes: Verbindungen vom Typ Ba3BIIIPtRuO9 - mit einer mittleren Oxydationsstufe der Edelmetalle von +4,5 - kristallisieren für BIII = Gd—Lu, Y in einer Variante des hexagonalen BaTiO3-Typs mit geordneter Kationenverteilung. Intensitätsberechnungen an Pulverdaten von Ba3YPtEuO9 (a = 5,888 Å; c = 14,70 Å) ergaben in der R.G. P63/mmc (sequence (hcc)2) einen verfeinerten, auf die Intensitäten bezogenen R′-Faktor von 5,9%. Mit BIII = Eu ist das Gitter monoklin und für BIII = Sm, Nd, La triklin verzerrt.
    Additional Material: 1 Ill.
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