Search results for "AAS"
showing 10 items of 1173 documents
Ortodoncia interceptiva: Necesidad de diagnóstico y tratamiento temprano en las mordidas cruzadas transversales
2006
Las mordidas cruzadas corresponden a una maloclusión en el plano transversal del maxilar definiéndose como la alteración en la correcta articulación de las cúspides palatinas de molares y premolares superiores con las fosas de molares y premolares inferiores. Dada la frecuencia de alteraciones transversales que se presentan en la consulta de odontología general, vemos la necesidad de realizar un buen diagnostico diferencial de las mismas para poder adecuar nuestros tratamientos de la forma más eficaz y con los Resultados más estables posibles. Para ello se ha de diferenciar entre compresión esquelética, compresión dentoalveolar y compresión dental ya que estos tres supuestos requerirán trat…
"Arjessa pitää aikalailla olla kaikki palikat itsellä tassuissa" : suomalaisten johtajien työn ja perheen yhteensovittaminen puolisoiden kokemana
2017
Emmi Telanne (2017). ”Arjessa pitää aikalailla olla kaikki palikat itsellä tassuissa” - Suomalaisten johtajien työn ja perheen yhteensovittaminen puolisoiden kokemana: Liikuntatieteellinen tiedekunta, Jyväskylän yliopisto, terveyskasvatuksen pro gradu -tutkielma, 52 s., 6 liitettä. Työn ja perheen yhteensovittaminen on tärkeää yksilön, yhteiskunnan, yritysten ja erityisesti perheen näkökulmasta. Tutkimusten mukaan johtajan työn stressi- ja vaatimustekijöillä on havaittu olevan kielteisiä vaikutuksia perhe-elämän hyvinvointiin. Etenkin ajankäyttö arjessa on osoittautunut ongelmaksi työn ja perhe-elämän yhdistämisessä. Työnteko vei suuren osan johtajan käytettävissä olevasta ajasta ja energia…
Evolutionary plasticity of SH3 domain binding by Nef proteins of the HIV-1/SIVcpz lentiviral lineage
2021
The accessory protein Nef of human and simian immunodeficiency viruses (HIV and SIV) is an important pathogenicity factor known to interact with cellular protein kinases and other signaling proteins. A canonical SH3 domain binding motif in Nef is required for most of these interactions. For example, HIV-1 Nef activates the tyrosine kinase Hck by tightly binding to its SH3 domain. An archetypal contact between a negatively charged SH3 residue and a highly conserved arginine in Nef (Arg77) plays a key role here. Combining structural analyses with functional assays, we here show that Nef proteins have also developed a distinct structural strategy—termed the "R-clamp”—that favors the formation …
Kalmbergin kartasto R VI : List 10
1855
ANALYSIS OF THE SEXUAL VARIABILITY IN THE SHELL OF THE SPANISH UPPER CRETACEOUS TURTLE DORTOKA VASCONICA (PAN-PLEURODIRA, DORTOKIDAE)
2021
The present study characterizes the morphological variability related to the sexual dimorphism in the shells of the Spanish Upper Cretaceous turtle Dortoka vasconica . This study is based on the material from its type locality: Lano, Burgos. Two morphotypes were identified there based on the posterior plastral area as well as two for the anterior plastral lobe. However, a correlation with the previously indicated morphotypes could not be established due to the disarticulation of the specimens and the limited information available on the sexual dimorphism of Pleurodira. The morphological variability previously identified for Dortoka vasconica is analysed here through a quantitative approa…
School Bullying Through Graphic Vignettes : Developing a New Arts-Based Method to Study a Sensitive Topic
2020
The purpose of this study was to develop a new arts-based measure assessing school bullying and to test it within a pilot study involving 19 schoolchildren (mean age = 15.4; range = 1.00). The researchers designed the new methodological tool (referred to as graphic vignettes) as a set of incomplete comic strips, which participants were asked to complete in a creative way. Researchers then invited participants to engage in follow-up interviews using completed comic strips as individualized interview prompts. The authors detail the design and administration of the graphic vignettes and discuss their efficacy, limitations, and potential applications. The researchers argue that studies on sensi…
Kalmbergin kartasto R VI : List 1
1855
Unraveling the Role of the Rh–ZrO2 Interface in the Water–Gas-Shift Reaction via a First-Principles Microkinetic Study
2018
The industrially important water–gas-shift (WGS) reaction is a complex network of competing elementary reactions in which the catalyst is a multicomponent system consisting of distinct domains. Herein, we have combined density functional theory calculations with microkinetic modeling to explore the active phase, kinetics, and reaction mechanism of the WGS over the Rh–ZrO2 interface. We have explicitly considered the support and metal and their interface and find that the Rh–ZrO2 interface is far more active toward WGS than Rh(111) facets, which are susceptible to CO poisoning. CO2 forming on the zirconia support rapidly transforms into formate. These findings demonstrate the central role of…
Nanoscale etching of III-V semiconductors in acidic hydrogen peroxide solution: GaAs and InP, a striking contrast in surface chemistry
2019
In this study of nanoscale etching for state-of-the-art device technology, the importance of surface chemistry, in particular the nature of the surface oxide, is demonstrated for two III-V materials. Striking differences in etching kinetics were found for GaAs and InP in sulphuric and hydrochloric acidic solutions containing hydrogen peroxide. Under similar conditions, etching of GaAs was much faster, while the dependence of the etch rate on pH, and on H2O2 and acid concentrations also differed markedly for the two semiconductors. Surface analysis techniques provided information on the product layer present after etching: strongly non-stoichiometric porous (hydr)oxides on GaAs and a thin st…
Pre-invasion history and demography shape the genetic variation in the insecticide resistance-related acetylcholinesterase 2 gene in the invasive Col…
2012
Abstract Background Invasive pest species offers a unique opportunity to study the effects of genetic architecture, demography and selection on patterns of genetic variability. Invasive Colorado potato beetle (Leptinotarsa decemlineata) populations have experienced a rapid range expansion and intense selection by insecticides. By comparing native and invasive beetle populations, we studied the origins of organophosphate (OP) resistance-associated mutations in the acetylcholinesterase 2 (AChE2) gene, and the role of selection and demography on its genetic variability. Results Analysis of three Mexican, two US and five European populations yielded a total of 49 haplotypes. Contrary to the exp…