6,670 research outputs found
TACC3-ch-TOG track the growing tips of microtubules independently of clathrin and Aurora-A phosphorylation
No full textThe interaction between TACC3 (transforming acidic coiled coil protein 3) and the microtubule polymerase ch-TOG (colonic, hepatic tumor overexpressed gene) is evolutionarily conserved. Loading of TACC3–ch-TOG onto spindle microtubules requires the phosphorylation of TACC3 by Aurora-A kinase and the subsequent interaction of TACC3 with clathrin to form a microtubule binding surface. Whether there is a pool of TACC3–ch-TOG that is independent of clathrin in human cells, and what is the function of this pool, are open questions. Here, we report that TACC3 is recruited to the plus-ends of microtubules by its association with ch-TOG and that this pool is independent of phosphorylation and binding to clathrin. The plus-end binding of TACC3–ch-TOG persists in interphase and we propose that one cellular function of TACC3–ch-TOG is to modulate cell migration. We also describe the distinct subcellular pools of TACC3, ch-TOG and clathrin. TACC3 is often described as a centrosomal protein, but we show that there is no significant population of TACC3 at centrosomes. The delineation of distinct protein pools reveals a simplified view of how these proteins are organized and controlled by post-translational modification
Notes on Amandinea Petermannii Comb.nov. (Physciaceae) from Antarctica
No full textThe new combination Amandinea petermannii (Hue) Matzer, Mayrh. & Scheidegger; is proposed. The taxonomy, morphology, anatomy, chemistry, ecology and distribution of this lichen are discussed. Rinodina convoluta D. C. Lindsay is synonym of A. petermanni
Prozessoptimierung der bestehenden Krankentaggeld- und Unfalltaggeldverarbeitung bei der CH Media
No full textDer derzeitige Prozess ist aufgrund der Vielzahl beteiligter Parteien komplex. Die Verwendung unterschiedlicher Systeme trägt zusätzlich zur Komplexität bei und erschwert eine reibungslose Abwicklung. Ein weiteres Problem ist das Fehlen einer klar definierten Prozessstruktur, wodurch die betroffenen Mitarbeitenden nicht ausreichend über das weitere Vorgehen informiert werden. Diese Unklarheiten und Kommunikationslücken machen die Verarbeitung noch anspruchsvoller und ineffizienter. Anhand der Forschungsfrage wurde untersucht, wie der bestehende Prozess effizienter gestaltet werden kann
Les diminutifs basques avec ch
No full textSe presentan formaciones similares a los diminutivos vascos con "ch" en España y América latina. Se dan ejemplosThe author introduces similar formations to the Basque diminutive "ch" in Spain and Latin America. Examples are provide
II - Le bilan sensori-moteur de l'enfant : éléments théoriques et cliniques
No full textTheoretical advances in the field of child psychology have modified our understanding of developmental processes and have thus brought about the elaboration of new clinical practices. From an instrumental point of view, the sensori-motor approach proposes original contributions for a better understanding of the developing child. This perspective also allows to redefine some aspects of the clinical practices, especially by considering the clinical examination as part of a long term psycho-pedagogic process.Les progrès théoriques réalisés dans le domaine de la psychologie de l'enfant ont transformé notre compréhension du développement et nous ont amené à développer des pratiques cliniques nouvelles. Abordée dans une perspective instrumentale, la sensor i-mo triché offre des propositions originales pour comprendre l'enfant en développement. Cette approche permet également de redéfinir certains aspects de la démarche clinique, notamment en situant l'examen dans un processus psycho-éducatif à long terme.Bullinger André, de Santa Ana I., Grivel P., Millan R., Scheidegger Pascal, Schmid Pons N., Tschopp Ch. II - Le bilan sensori-moteur de l'enfant : éléments théoriques et cliniques. In: Enfance, n°1, 1996. pp. 41-50
COUPLING OF THE C-H STRETCH TO LARGE-AMPLITUDE TORSION AND INVERSION MOTIONS: COMPARISON OF CHCH, CHOH AND CHNH
No full textAuthor Institution: Department of Polymer Science and Department of Chemistry, The University of Akron; Department of Chemistry, The University of Akron, OH 44325In each of the title molecules, torsional and inversion tunneling occurs between six equivalent minima. Coupling of these degrees of freedom to the CH stretch occurs via variation of the C-H stretching force constants as a function of the torsional () and inversion () angles. Maps of the couplings have been computed at the MP2/6-311++G(3df,2p) level. Both the single bond CH stretch force constants and the bilinear couplings between CH bonds are presented as a function of and . Although the torsional barriers differ by more than a factor of 20, the torsion-inversion-vibration coupling patterns are very similar for CHNH and CHCH. On the other hand, the torsion-inversion-vibration coupling in the charged species CHOH is much weaker
Reply to the Ch. Lagrange’s note
No full textThe author answers to a Ch. Lagrange’s note who refutes his theory on the diurnal nutation.L’auteur répond à une note de Ch. Lagrange qui réfute sa théorie sur la nutation diurne
NATURE OF TORSION-INVERSION COUPLING IN CHNH, CHOH AND CHCH
No full textAuthor Institution: Department of Chemistry, The University of Akron, OH; 44325-3601Two-dimensional torsion-inversion surfaces for methylamine, protonated methanol and ethyl radical were calculated and fit to a function containing a polynomial in the inversion angle() and trigonometric functions of the torsional angle(). Calculations were done at the B3LYP, MP2, and CCSD(T) levels with the 6-311++G(d,p) and 6-311++G(3df, 2p) basis sets and partial optimization. CHNH, CHOH and CHCH have G symmetry with 6-equivalent minima which are located by the various calculations at inversion angles 6.5 to 11; 42 to 45.5 and 52.5 to 55 degrees respectively on either side of planar. The three molecules have very different barriers to inversion ranging from no barrier for CHCH to 838 cm for CHOH to 1837 cm for CHNH. The dominant torsion-inversion coupling term in all cases has the form
Note about Mr. Ch. Lagrange’s recent communication
No full textThe author establishes a note about Mr. Ch. Lagrange’s communication on the Eulerian nutation period.L’auteur établit une note au sujet d’une communication de Ch. Lagrande sur la période de la nutation eulérienne
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Using δ¹³C-CH₄ and δD-CH₄ to constrain Arctic methane emissions
No full text© Author(s) 2016.We present a global methane modelling study assessing the sensitivity of Arctic atmospheric CH₄ mole fractions, δ¹³C-CH₄ and δD-CH₄ to uncertainties in Arctic methane sources. Model simulations include methane tracers tagged by source and isotopic composition and are compared with atmospheric data at four northern high-latitude measurement sites. We find the model's ability to capture the magnitude and phase of observed seasonal cycles of CH₄ mixing ratios, δ¹³C-CH₄ and δD-CH₄ at northern high latitudes is much improved using a later spring kick-off and autumn decline in northern high-latitude wetland emissions than predicted by most process models. Results from our model simulations indicate that recent predictions of large methane emissions from thawing submarine permafrost in the East Siberian Arctic Shelf region could only be reconciled with global-scale atmospheric observations by making large adjustments to high-latitude anthropogenic or wetland emission inventories
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