Search results for "LIGA"

Drivers’ experiences during floods: Investigating the psychological influences underpinning decisions to avoid driving through floodwater

2018

Abstract A major risk factor for many flood-related drownings is driving through floodwater. We aimed to understand Australian drivers’ experiences and beliefs with respect to avoid driving through floodwater using the theory of planned behaviour as a framework. Study 1 (N = 23) used a qualitative design to gain an in-depth understanding of individuals’ experiences with driving through floodwater. Study 2 (N = 157) used a survey-based design to identify the factors related to this behaviour including knowledge, beliefs, and social-cognitive factors. In Study 1, drivers identified a range of advantages (e.g., didn’t damage car), disadvantages (e.g., inconvenient, but not so terrible), barrie…

Tunable Interaction Strength and Nature of the S···Br Halogen Bonds in [(Thione)Br2] Systems

2015

The strength and nature of the S···Br and Br···Br interactions were systematically tuned by altering the electron donor properties of the thione group. Three new halogen-bonded compounds, [(N-methylbenzothiazole-2-thione)Br2]·0.5CH2Cl2 (1), [(2(3H)-benzothiazolethione)Br2] (2), and [(2-benzimidazolethione)Br]·[Br3] (3), were synthesized and studied structurally by using X-ray crystallography and computationally by using charge density analysis based on QTAIM calculations. Analysis of the interaction strength indicated a formation of surprisingly strong S···Br halogen bonds in 1 (−104 kJ mol–1, and RBrS = 0.64) and 2 (−116 kJ mol–1, and RBrS = 0.63) with a substantial covalent contribution. …

Yhteiskunnallinen tiede

2017

Kirja-arvostelu teoksesta Esa Väliverronen: Julkinen tiede. Vastapaino. Tampere 2016. nonPeerReviewed

Effect of ligand-binding on protein function

2014

Historia del Pensamiento Político Premoderno 03 Platón

2010

Tema 3 El pensamiento político de Platón 1. Platón 2. ¿Cuál es el contexto político e intelectual en el que vivirá Platón? Las guerras del Peloponeso. Platón y la dictadura de los Treinta Tiranos. Sócrates, el único político autentico de Atenas. La experiencia con el joven Dionisio de Siracusa. 3. Platón crea la Academia. Regreso a Siracusa. La Academia, centro de conocimiento. 4. El Mito de la caverna. 5. Justicia, estado y política: el rey-filósofo. 6. Ciudadanos, sofistas y Sócrates. 7. Teoría política de Platón: el Estado Ideal. 8. Teoría de la educación en Platón. 9. La República, obra de madurez de Platón. 10. Formas políticas de gobierno: Aristocracia. Timocracia. Oligarquía. Democra…

Alkyl-Substituted Aminobis(phosphonates) : Efficient Precipitating Agents for Rare Earth Elements, Thorium, and Uranium in Aqueous Solutions

2021

The efficient and environmentally sustainable separation process for rare earth elements (REE), especially for adjacent lanthanoids, remains a challenge due to the chemical similarity of REEs. Tetravalent actinoids, thorium, and traces of uranium are also present in concentrates of REEs, making their separation relevant. This study reports six simple water-soluble aminobis(phosphonate) ligands, RN[CH2P(O)(OH)2]2 (1 R = CH2CH3, 2 R = (CH2)2CH3, 3 R = (CH2)3CH3, 4 R = (CH2)4CH3, 5 R = (CH2)5CH3, 6 R = CH2CH(C2H5)(CH2)3CH3) as precipitating agents for REEs, Th, and U, as well as gives insight into the coordination modes of the utilized ligands with REEs at the molecular level. Aminobis(phospho…

Kvantitativa perspektiv på L2-tal på olika färdighetsnivåer

2021

The aim of this study is to investigate differences in the amount (the occurrence rate) of second language (L2) traits at different proficiency levels in spoken L2 Finland-Swedish. In the analysis, we focus on L2 features in segments, segment lengths, word stress and sentence stress. Further, we analyze the ability to produce speech and the complexity of production at different proficiency levels: the amount of speech, token length, token structure and speech rate. Through previous research, we know that pronunciation plays an important role for comprehensibility and foreign accent but also for the level of oral proficiency. Although pronunciation and different pronunciation features are us…

Nuevos ligandos polinitrogenados derivados de [1,2,3]triazolo[1,5-a]piridinas. Caracterización y estudio de sus potenciales aplicaciones

2016

El presente trabajo de tesis doctoral se compone de seis capítulos. El primer y segundo capítulo son de carácter introductorio donde se exponen los objetivos de la investigación y los antecedentes bibliográficos. En los siguientes tres capítulos se exponen tres diferentes tipos de funcionalización del anillo triazolopiridínico mientras que en el último capítulo se presentan los estudios de propiedades ópticas de algunos derivados descritos en el quinto capítulo. La primera parte del trabajo, que se describe en el capítulo 3, ha sido el estudio de la reactividad del anillo triazolopiridínico en condiciones de arilación directa. La [1,2,3]triazolo[1,5-a]piridina reacciona con halogenuros arom…

Dioxomolybdenum(VI) and -Tungsten(VI) Amino Bisphenolates as Epoxidation Catalysts

2016

Low-cost metallate salts Na2MO4·2H2O (M = molybdenum, tungsten) react with a tridentate amine bisphenol bis(2-hydroxy-3-tert-butyl-5-methylbenzyl)methylamine (H2ONOtBu) under ambient conditions in acidic methanol solutions. The reactions lead to the formation of isostructural dioxo complexes [MO2(ONOtBu)(MeOH)]·MeOH in convenient yields. Spectral data as well as X-ray analyses reveal these complexes to be isostructural. Both compounds were tested as catalysts for epoxidation of olefins using cis-cyclooctene, cyclohexene, norbornene and styrene as substrates and tert-butyl hydroperoxide and hydrogen peroxide as oxidants. The molybdenum complex catalyses selectively the oxidation of cis-cyclo…

An experimental and theoretical study of a heptacoordinated tungsten(VI) complex of a noninnocent phenylenediamine bis(phenolate) ligand

2018

Abstract [W(N2O2)(HN2O2)] (H4N2O2 = N,N′-bis(3,5-di-tert-butyl-2-hydroxyphenyl)-1,2-phenylenediamine) with a noninnocent ligand was formed by reaction of the alkoxide precursor [W(eg)3] (eg = the 1,2-ethanediolate dianion) with two equivalents of ligand. The phenol groups on one of the ligands are completely deprotonated and the ligand coordinates in a tetradentate fashion, whereas the other ligand is tridentate with one phenol having an intact OH group. The molecular structure, magnetic measurements, EPR spectroscopy, and density functional theory calculations indicate that the complex is a stable radical with the odd electron situated on the tridentate amidophenoxide ligand. The formal ox…