38 research outputs found
JĂĄtĂ©k mindenkinek! : inklĂșziĂłt tĂĄmogatĂł elmĂ©let Ă©s gyakorlat OlaszorszĂĄgbĂłl
OlaszorszĂĄg ĂșttörĆnek szĂĄmĂt az inkluzĂv nevelĂ©s terĂŒletĂ©n, köszönhetĆen annak, hogy mĂĄr az 118/1971-es törvĂ©ny kimondta, az ĂĄllami oktatĂĄs bĂĄrmely intĂ©zmĂ©nye köteles fogyatĂ©kkal Ă©lĆ gyermekeket is fogadni. E folyamat jogi csĂșcspontja a 170/2010-es, TanulĂĄsi zavarokrĂłl szĂłlĂł miniszteri rendelet, melyben elismerik, hogy bĂĄrki Ă©lete sorĂĄn, hosszabb vagy rövidebb idĆre, rendelkezhet sajĂĄtos igĂ©nnyel több okbĂłl kifolyĂłlag. Ez azĂ©rt fontos, mert ez a rendelet a sajĂĄtos igĂ©nyt egy mĂĄs szemszögbĆl taglalja, ahol nem az egyĂ©n âdifektolĂłgiĂĄjĂĄrĂłlâ van szĂł, hanem a szemĂ©lyek
kĂŒlönbözĆsĂ©gĂ©rĆl egy ĂĄltalĂĄnosan elfogadott, merev normĂĄhoz viszonyĂtva, vagyis maga a norma kĂ©rdĆjelezĆdik meg Ă©s nem az alany. Azonban a gyakorlati megvalĂłsĂtĂĄshoz nem ĂĄrt egy segĂ©danyag, ami megkönnyĂti a tanĂĄri felkĂ©szĂŒlĂ©st Ă©s munkĂĄt. EzĂ©rt is hasznos egy olyan könyv, amely a mindennapi tanĂtĂĄsi munkĂĄt segĂti, ösztönzi jĂĄtĂ©kos feladatokkal
Novel gold(I) diphosphine-based dimers with aurophilicity triggered multistimuli light-emitting properties
We report a design strategy for the preparation of stimuli-responsive materials with multicolour emission that is based on a single type of luminophore molecule comprising gold(i) and a flexible diphosphine ligand.</p
Unexpected formation of a fused double cycle trinuclear gold(i) complex supported by ortho-phenyl metallated aryl-diphosphine ligands and strong aurophilic interactions
The first homoleptic trinuclear arylgold(i) complex, [Au3(L')2](NO3) (3), based on an ortho-phenyl metallated aryl-diphosphine ligand (L' = o-C6H4PPh(C15H10O)PPh2), has been obtained through a new thermolytic reaction of the corresponding diauracycle, [Au2(L)2](NO3)2 (L = xantphos). The formation of 3 involves activation of the ortho-phenyl C-H bond of the xantphos ligands. The presence of Au-C bonds in this new gold-diphosphine cluster is not its only remarkable feature, since it also displays two 12-membered rings fused together and a linear {Au3} chain with aurophilic interactions. Complex 3 exhibits strong sky-blue luminescence that can be assigned to a triplet metal-metal (3MM) transition partially mixed with a ligand-to-metal-metal charge transfer (3LMMCT) transition related to the aurophilic bonding. This [Au3(L')2]+ triauracycle also shows AIEE-activity, and is a selective luminescent chemosensor for metal ions
Discrimination Ability of Assessors in Check-All-That-Apply Tests: Method and Product Development
Binary similarity measures have been used in several research fields, but their application in sensory data analysis is limited as of yet. Since check-all-that-apply (CATA) data consist of binary answers from the participants, binary similarity measures seem to be a natural choice for their evaluation. This work aims to define the discrimination ability of CATA participants by calculating the consensus values of 44 binary similarity measures. The proposed methodology consists of three steps: (i) calculating the binary similarity values of the assessors, sample pair-wise; (ii) clustering participants into good and poor discriminators based on their binary similarity values; (iii) performing correspondence analysis on the CATA data of the two clusters. Results of three case studies are presented, highlighting that a simple clustering based on the computed binary similarity measures results in higher quality correspondence analysis with more significant attributes, as well as better sample discrimination (even according to overall liking)
Morphological evidence for enhanced kisspeptin and neurokinin B signaling in the infundibular nucleus of the aging man.
Peptidergic neurons synthesizing kisspeptin (KP) and neurokinin B (NKB) in the hypothalamic infundibular nucleus have been implicated in negative sex steroid feedback to GnRH neurons. In laboratory rodents, testosterone decreases KP and NKB expression in this region. In the present study, we addressed the hypothesis that the weakening of this inhibitory testosterone feedback in elderly men coincides with enhanced KP and NKB signaling in the infundibular nucleus. This central hypothesis was tested in a series of immunohistochemical studies on hypothalamic sections of male human individuals that were divided into arbitrary "young" (21-49 yr, n = 11) and "aged" (50-67 yr, n = 9) groups. Quantitative immunohistochemical experiments established that the regional densities of NKB-immunoreactive (IR) perikarya and fibers, and the incidence of afferent contacts they formed onto GnRH neurons, exceeded several times those of the KP-IR elements. Robust aging-dependent enhancements were identified in the regional densities of KP-IR perikarya and fibers and the incidence of afferent contacts they established onto GnRH neurons. The abundance of NKB-IR perikarya, fibers, and axonal appositions to GnRH neurons also increased with age, albeit to lower extents. In dual-immunofluorescent studies, the incidence of KP-IR NKB perikarya increased from 36% in young to 68% in aged men. Collectively, these immunohistochemical data suggest an aging-related robust enhancement in central KP signaling and a moderate enhancement in central NKB signaling. These changes are compatible with a reduced testosterone negative feedback to KP and NKB neurons. The heavier KP and NKB inputs to GnRH neurons in aged, compared with young, men may play a role in the enhanced central stimulation of the reproductive axis. It requires clarification to what extent the enhanced KP and NKB signaling upstream from GnRH neurons is an adaptive response to hypogonadism or, alternatively, a consequence of a decline in the androgen sensitivity of KP and NKB neurons
Glutamatergic and GABAergic Innervation of Human Gonadotropin-Releasing Hormone-I Neurons
Amino acid (aa) neurotransmitters in synaptic afferents to hypothalamic GnRH-I neurons are critically involved in the neuroendocrine control of reproduction. Although in rodents the major aa neurotransmitter in these afferents is gamma-aminobutyric acid (GABA), glutamatergic axons also innervate GnRH neurons directly. Our aim with the present study was to address the relative contribution of GABAergic and glutamatergic axons to the afferent control of human GnRH neurons. Formalin-fixed hypothalamic samples were obtained from adult male individuals (n = 8) at autopsies, and their coronal sections processed for dual-label immunohistochemical studies. GABAergic axons were labeled with vesicular inhibitory aa transporter antibodies, whereas glutamatergic axons were detected with antisera against the major vesicular glutamate transporter (VGLUT) isoforms, VGLUT1 and VGLUT2. The relative incidences of GABAergic and glutamatergic axonal appositions to GnRH-immunoreactive neurons were compared quantitatively in two regions, the infundibular and paraventricular nuclei. Results showed that GABAergic axons established the most frequently encountered type of axo-somatic apposition. Glutamatergic contacts occurred in significantly lower numbers, with similar contributions by their VGLUT1 and VGLUT2 subclasses. The innervation pattern was different on GnRH dendrites where the combined incidence of glutamatergic (VGLUT1 + VGLUT2) contacts slightly exceeded that of the GABAergic appositions. We conclude that GABA represents the major aa neurotransmitter in axo-somatic afferents to human GnRH neurons, whereas glutamatergic inputs occur somewhat more frequently than GABAergic inputs on GnRH dendrites. Unlike in rats, the GnRH system of the human receives innervation from the VGLUT1, in addition to the VGLUT2, subclass of glutamatergic neurons
Bombardment of CO ice by cosmic rays: I. Experimental insights into the microphysics of molecule destruction and sputtering
We present a dedicated experimental study of microscopic mechanisms
controlling radiolysis and sputtering of astrophysical ices due to their
bombardment by cosmic ray ions. Such ions are slowed down due to inelastic
collisions with bound electrons, resulting in ionization and excitation of ice
molecules. In experiments on CO ice irradiation, we show that the relative
contribution of these two mechanisms of energy loss to molecule destruction and
sputtering can be probed by selecting ion energies near the peak of the
electronic stopping power. We have observed a significant asymmetry, both in
the destruction cross section and the sputtering yield, for pairs of ion
energies corresponding to same values of the stopping power on either side of
the peak. This implies that the stopping power does not solely control these
processes, as usually assumed in the literature. Our results suggest that
electronic excitations represent a significantly more efficient channel for
radiolysis and, possibly, also for sputtering of CO ice. We also show that the
charge state of incident ions as well as the rate for CO production in the
ice have negligible effect on these processes.Comment: Accepted for publication in Ap