Search results for "Lament"
showing 10 items of 895 documents
In vivo imaging and quantification of the continuous keratin filament network turnover
2008
Keratin polypeptides are major components of the epithelial cytoskeleton forming a filamentous 3D-network. Like intermediate filament polypeptides of other cell types, keratins make up a stable, but elastic network that is responsible for mechanical stress resilience. At the same time the keratin network is able to change its shape during development, cell division, metastasis and cell migration.
Mechanical Behavior of Concrete Columns Confined by Laterally Pre-Tensioned FRP
2011
This paper presents the results of an experimental investigation of concrete columns confined by a wound pre-tensioned carbon filament yarn. Yarn winding equipment was developed in the Institute of Polymer Mechanics with the ability to set the desired pre-tension force and thereby producing confined concrete specimens with different initial lateral pressure. It is shown that initial lateral pressure increases the axial stress at which intense internal cracking of the concrete develops.
Identification of Novel Principles of Keratin Filament Network Turnover in Living Cells
2004
It is generally assumed that turnover of the keratin filament system occurs by exchange of subunits along its entire length throughout the cytoplasm. We now present evidence that a circumscribed submembranous compartment is actually the main site for network replenishment. This conclusion is based on the following observations in living cells synthesizing fluorescent keratin polypeptides: 1) Small keratin granules originate in close proximity to the plasma membrane and move toward the cell center in a continuous motion while elongating into flexible rod-like fragments that fuse with each other and integrate into the peripheral KF network. 2) Recurrence of fluorescence after photobleaching i…
Pyrolysis gas chromatography-mass spectrometry in environmental analysis: Focus on organic matter and microplastic
2020
Pyrolysis gas chromatography-mass spectrometry (Py-GC-MS) has great potential within environmental analysis. This technique is mainly used for the chemical identification of macromolecules that cannot be characterized by either liquid or gas chromatography due to their big size. Through pyrolysis (controlled thermal degradation), these macromolecules are broken down into simpler molecules that can be separated by gas chromatography and detected by mass spectrometry. This technique has been traditionally used in environmental samples for the characterization of organic matter and humic substances, contaminants, lignins, etc. It attains the identification of the different types of chemical un…
Imaging of Keratin Dynamics during the Cell Cycle and in Response to Phosphatase Inhibition
2004
Publisher Summary The characterization and development of autofluorescent proteins, most prominently of the green florescent protein, have provided tools to label cellular structures such that they can be examined in living cells. This chapter highlights the potential of live cell imaging in providing novel and unprecedented insights into the dynamic organization of the keratin cytoskeleton and outlines the important aspects of this method. The live cell imaging experiments suggest that the driving force behind the vectorial and dynamic keratin distribution patterns relies both on microtubules and microfilaments and their associated factors. The studies on the dynamics of the keratin cytosk…
Strutture del “congelamento” nel cinema
2009
Competencia judicial internacional en el ejercicio de acciones civiles en materia de variedades vegetales en la Unión Europea
2023
El Reglamento (CE) nº 2100/94 crea un sistema uniforme de protección para las variedades vegetales en todo el territorio de la Unión Europea, eminentemente de corte sustantivo o material, en el que incorpora un régimen especial para la determinación de los tribunales internacionalmente competentes establecidos en los artículos 94 a 100 del ROV y para la solicitud de medidas de ejecución forzosa y tutela cautelar, remitiendo al Convenio de Lugano. Si el encomiable propósito del legislador pudiera ser el de ampliar el alcance territorial de esta norma europea sobre los títulos de obtención vegetal a Estados fuera del territorio de la Unión Europea, en modo alguno puede atribuirse la competenc…
Azioni di modellamento e lavoro collaborativo in classe per la comprensione del testo come problem solving
2021
Per stimolare l’abilità di comprensione del testo è fondamentale la costruzione autonoma dell’allievo, escludendo esercitazioni imposte e spesso poco produttive. Gli alunni possono apprendere strategie adeguate di lettura che consentano loro di mettere in relazione i processi di elaborazione dei testi con situazioni di problem solving, attraverso attività significative e coinvolgenti. Con l’obiettivo di promuovere il processo di lettura e di comprensione del testo utilizzando la metodologia del reciprocal teaching (RT), è stato realizzato un intervento didattico in classi quinte di scuola primaria che ha coinvolto 73 alunni di 10-11 anni e 10 docenti di Palermo. La pratica di insegnamento-a…
Parliamentary sources in the comparative study of conceptual history: methodological aspects and illustrations of a research proposal
2009
Summary: This article proposes that historians and political theorists should exploit parliamentary sources to move from the writing of national histories to the comparative study of the conceptual history of European political cultures. Complementing the German lexicographical approach to conceptual history, the authors argue that parliamentary debates in several European countries provide more reliable sources for the past use of the language of politics. They emphasize the possibilities for the study of political history and the rhetoric of parliamentary institutions offered by the use of parliamentary debates side by side with the study of archival sources and published literature. Rhet…
Il sistema penitenziario italiano dopo la condanna CEDU. L'opinione dei detenuti
2017
Il contributo si focalizza sulle misure che l'Italia ha adottato a seguito della condanna da parte della Convenzione Europea dei Diritti dell'Uomo (2013) per trattamento inumano all'interno degli istituti di pena del Paese. La riflessione iniziale sul caso italiano è supportata dall'esito di un'indagine esplorativa che testimonia i problemi e le aspettative che esistono in un carcere di Palermo (Sicilia).