Search results for " Crown"

Unexpected Structural Diversity in Alkali Metal Azide-Crown Ether Complexes: Syntheses, X-ray Structures, and Quantum-Chemical Calculations

2005

A series of alkali metal azide-crown ether complexes, [Li([12]crown-4)(N-3)], [Na([15]crown-5)(N-3)], [Na([15]crown-5)(H2O)(2)]N-3, [K([18]crown-6)(N-3)(H2O)], [Rb([18]crown-6)(N-3)(H2O)], [Cs([18]crown-6)(N-3)](2), and [Cs([18]crown-6)(N-3)(H2O)(MeOH)], has been synthesised. In most cases, single crystals were obtained, which allowed X-ray crystal structures to be derived. The structures obtained have been compared with molecular structures computed by density functional theory (DFT) calculations. This has allowed the effects of the crystal lattice on the structures to be investigated. Also, a study of the M-N-terminal metalazide bond length and charge densities on the metal (M) and termin…

"Schon lange betrachteten sich hier die 'Barone' als die eigentlichen Herren des Landes". K diskusi o příčinách vzniku Zelenohorské jednoty

2017

This arlicle proposes a new theory explaining why in 1465 the Czech Catholic noblemen rebelled against the King of Bohemia, Jiri of Podebrady. One of the main reasons was the interference of the city of Wrocław (Breslau), which tried to usurp the historical right of the Bohemian nobility to chose the Bohemian king. It also brings back to light the crucial role played in these events by Jośt II of Rosenberg, who was not only a representative of the most powerful noble family in Bohemia, but also the Bishop of Wrocław.

Coronectomy versus surgical removal of the lower third molars with a high risk of injury to the inferior alveolar nerve: a bibliographical review

2015

Background Coronectomy is the surgical removal of the crown of the tooth deliberately leaving part of its roots. This is done with the hope of eliminating the pathology caused, and since the roots are still intact, the integrity of the inferior alveolar nerve is preserved. Objectives The aim is to carry out a systematic review in order to be able to provide results and conclusions with the greatest scientific evidence possible. Material and Methods A literature review is carried out through the following search engines: Pubmed MEDLINE, Scielo, Cochrane library and EMI. The level of evidence criteria from the Agency for Healthcare Research and Quality was applied, and the clinical trials’ le…

Root and crown rot of olive caused by Phytophthora spp

2011

Meandry politycznej kariery Andrzeja Lipskiego (1572-1631). Eksluteranin biskupem krakowskim

2018

Andrzej Lipski (1572–1631) pochodził ze średnioszlacheckiej rodziny wyznania lute- rańskiego. Studiował na uczelniach protestanckich (1582–1594 – Strasburg, Heidelberg) i katolickich (1603–1605 – Rzym), uzyskując doktorat obojga praw. Karierę Lipskiego w kancelarii koronnej przyspieszyło przejście na katolicyzm, obranie stanu duchowego i protekcja biskupa-podkanclerzego Piotra Tylickiego, wpływowego stronnika kanclerza Jana Zamoyskiego. Lipski należał wówczas do duchowieństwa państwowego, które słu- żyło królowi i Rzeczypospolitej, a dochody czerpało z beneficjów, o których uzyskanie łatwiej było przy dworze. Odejście z elity władzy Zamoyskiego jego stronników w 1605 r. oraz sympatyzowanie …

Uso de las coronas telescópicas en el tratamiento de un paciente adulto con fisura labiopalatina: Puesta al día de la etiología y el tratamiento

2006

La fisura labiopalatina es una de las malformaciones congénitas craneofaciales más importantes a tener en cuenta por el odontólogo general debido a su alta incidencia y a su elevada repercusión en la cavidad oral. Sus causas se deben a factores genéticos y predominantemente a factores ambientales, haciendo su aparición ya en el período embrionario. El sexo masculino se encuentra más afectado, en una relación de 7:3. La asociación más frecuente es el labio leporino unilateral total con fisura palatina, que es el caso que nos atañe. Presentamos el caso de un varón de 20 años que acude a nuestra consulta demandando una solución estética a su situación dental. El tratamiento efectuado al pacien…

Peri-Implant Behavior of Tissue Level Dental Implants with a Convergent Neck

2021

Introduction: The aim of this retrospective study was to analyze the radiographic peri-implant bone loss of bone level implants and tissue level implants with a convergent neck in screw-retained single crowns and in screw-retained fixed partial prostheses, after two years of functional loading. Materials and methods: The sample was divided into two groups according to their type: Group I: supracrestal implants with convergent transmucosal neck