Search results for "stereo"

Enantioselective determination of plasma protein binding of common amphetamine-type stimulants.

2021

Amphetamine-type stimulants (ATS) like amphetamine ('speed'), methamphetamine ('crystal meth') and 3,4-methylenedioxy-N-methylamphetamine (MDMA, 'ecstasy') represent some of the most frequently abused drugs worldwide. Another less frequently abused ATS is 4-fluoroamphetamine (4-FA). The enantiomers of these four compounds exhibit different pharmacokinetic and pharmacodynamic properties. According to the free drug theory, the pharmacological properties of a substance are dependent on its plasma protein binding (PPB). However, data on PPB of stimulant enantiomers in humans are rare or non-existent. Human plasma samples were spiked with racemic mixtures of the stimulants and subjected to ultra…

Interaction of methyltin(IV) compounds with carboxylate ligands. Part 1: formation and stability of methyltin(IV)–carboxylate complexes and their rel…

2006

Quantitative data on the stability of mono-, di- and trimethyltin(IV)-carboxylate complexes (acetate, malonate, succinate, malate, oxydiacetate, diethylenetrioxydiacetate, tricarballylate, citrate, butanetetracarboxylate and mellitate) are reported at t=25°C and I → 0 mol l - 1 . Several mononuclear, mixed proton, mixed hydroxo and polynuclear species are formed in these systems. As expected, the stability trend is mono- > di- > trimethyltin(IV) and mono < di < tri < tetra < hexa for the organotin moieties and carboxylate ligands investigated, respectively. Moreover, ligands containing, in addition to carboxylic,-O-and-OH groups show a significantly higher stability with respect to analogou…

Das Finnlandbild in der deutschen Presse : eine Analyse der Finnland-Artikel in Der Spiegel der Jahre 1996-2005

2008

Monenlaisia tunteita lihavan liikkeen äärellä

2022

Feministinen tutkimus on kritisoinut objektiivisen tieteenteon ihannetta jo vuosikymmenet. Silti tutkija voi hämmentyä huomatessaan suhtautuvansa omaan tutkimuskohteeseensa ristiriitaisesti. Moninaiset tunteet on kuitenkin hyvä sanallistaa, jotta niistä voidaan käydä keskustelua ja jopa kääntää ne vahvuudeksi. nonPeerReviewed

Estereotipos asociados al cuerpo humano: análisis de aplicaciones móviles usadas en la educación físico-deportiva

2022

Institutions and educators are massively and uncritically integrating digital curricular materials in their teaching praxis. This article aims to uncover whether health and fitness APP images convey or legitimize stereotypes linked to bodies, focusing on gender, race, somatotype and physical activity practice. We also analyse whether these apps are adequate for the recommended age or whether they are designed by physical education professionals. For that purpose, we designed a descriptive, comparative study based on content analysis on a sample of 373 images from 128 apps selected through a PRISMA review and a pilot test. Our results report that bodies reproduce a series of stereotypes: of …

Chemoselective, Substrate-directed Fluorination of Functionalized Cyclopentane β-Amino Acids

2016

This work describes a substrate-directed fluorination of some highly functionalized cyclopentane derivatives. The cyclic products incorporating CH2 F or CHF2 moieties in their structure have been synthesized from diexo- or diendo-norbornene β-amino acids following a stereocontrolled strategy. The synthetic study was based on an oxidative transformation of the ring carbon-carbon double bond of the norbornene β-amino acids, followed by transformation of the resulted "all cis" and "trans" diformyl intermediates by fluorination with "chemodifferentiation".

Magneto-structural correlations in discrete $Mn^{II}‐W^V$ cyano‐bridged assemblies with polyimine ligands

2010

We present the magneto-structural correlations for two novel discrete cyano-bridged assemblies based on cationic complexes of manganese(II) with diimine ligands and octacyanotungstate(V) ions. The crystal structure of [Mn II (terpy)(dmf)-(H 2 O) 2 ][Mn II (terpy)(H 2 O)(dmf)(μ-NC)W V (CN) 7 ] 2· 6H 2 O (1) (terpy = 2,2';6',2"-terpyridine, dmf = dimethylformamide) contains dinuclear {Mn II W V } - cyano-bridged anions, while the crystal structure of [Mn II (phen) 3 ] 2 [MnII(phen) 2 (μ-NC) 2 -W V (CN) 6 ] 2 (ClO 4 ) 2 ·9H 2 O (2) (phen = 1,10-phenanthroline) is built of tetranuclear {Mn II 2 W V 2} 2- square anions. Intramolecular Mn-W magnetic interactions through the cyano bridges are repr…

Predstavleniâ rossijskih studentov o finnah i Finlândii : na osnove oprosa

2015

Tässä pro gradu-tutkielmassa tarkastellaan kirjallisen kyselyn pohjalta, minkälaisia mielikuvia venäläisillä opiskelijoilla on suomalaisista ja Suomesta. Pyrin löytämään mahdollisia yhteisiä käsityksiä, kartoittamaan niiden alkuperää ja selvittämään, ovatko mielikuvat stereotyyppisiä. Lisäksi tutkin, ovatko opiskelijat kiinnostuneita Suomesta, ja missä määrin heidän mielikuvansa ovat positiivisia tai negatiivisia. Aihe on ajankohtainen, sillä Suomi ja Venäjä ovat rajamaita, jotka paitsi jakavat yhteisen historian ovat myös tänä päivänä kasvavissa määrin vuorovaikutuksessa toistensa kanssa. Kasvanut turismi, maahanmuutto ja kaupankäynti maiden välillä tekee mielenkiintoiseksi tutkia, minkäla…

Four dance subcultures : a study of non-professional dancers ́socialization, participation motives, attitudes and stereotypes

1998

Spatial Cognition 2020/1: Book of abstracts : August 2-4, 2021, University of Latvia

2021

Spatial Cognition is concerned with the acquisition, development, representation, organization, and use of knowledge about spatial objects in real, virtual or hybrid environments and processed by human or artificial agents. Spatial Cognition includes research from different fields insofar as they are concerned with cognitive agents and space, such as cognitive and developmental psychology, linguistics, computer science, geography, cartography, philosophy, neuroscience, and education. Research issues in the field range from the investigation of human spatial cognition to mobile robot navigation, including topics such as wayfinding, spatial planning, spatial learning, internal and external re…