Search results for "fixation"
showing 10 items of 482 documents
Electron microscopic demonstration of intracelluar promethazine accumulation sites by a precipitation technique: application to the cerebellar cortex…
1996
A method is described that allows electron microscopic identification of the phenothiazine neuroleptic promethazine after supravital intracardiac injection of high drug concentrations (greater than or equal to 3 %). The cerebellar cortex of the mouse was used for the investigation. This procedure is based on simultaneous fixation of drug and tissue by immersion in a paraformaldehyde-glutaraldehyde solution with the addition of phosphomolybdic acid. The electron microscopic investigation revealed that the drug could easily be identified as an electron-dense precipitate. Subpopulations of neurons exhibited a higher affinity for the drug than others, but no preference for any nerve cell type …
Eine neue experimentelle Methode zur Behandlung von Beckenwandrezidiven gynäkologischer Malignome
1989
Pelvic side wall recurrences of gynecological malignancies subsequent to primary or adjuvant radiation therapy have a bad prognosis, although in almost half of the cases, distant metastases are not present at the time of diagnosis of the local tumor progression. A radical operative resection of the pelvic wall recurrence is rarely possible and a second conventional percutaneous or intracavitary irradiation with a tumoricidal dose is no longer feasible, because of the limited radiation tolerance of the surrounding pelvic tissue. The different forms of chemotherapy applied at present are not curative. Based on considerations of tumor and radiation biology, we propose a new experimental treatm…
Calvin-Benson Cycle
2015
A carbon dioxide fixation pathway where a molecule of CO2 condenses with a 5-C compound (ribulose 1,5-bisphosphate) to yield two molecules of a 3-C compound (3-phosphoglycerate). These 3-C molecules serve both as precursors for biosynthesis and, through a cyclic series of enzymatic reactions, to regenerate the 5-C molecule necessary for the first carboxylating step (Fig. 1). The pathway is present in several bacterial lineages (e.g., cyanobacteria), and its acquisition by eukaryotic cells (chloroplast in algae and plants) was through the endosymbiotic association with ancient cyanobacteria.
Clause de fixation du prix a dire de tiers. Contrat de bail. Qualification, Clause d'arbitrage (non), Caractère contractuel de l'estimation
1998
International audience; (Cass. 3e civ., 4 mars 1998, Melleret c/ Laurent Pinsonnet, RJDA 5/1998, n° 662)
Subliminal Perception, Microgenesis, and Personality
1986
Publisher Summary In person perception, the interpersonal dimension is useful, as is implicated in communicating personal contents. The problem of consciousness is intimately connected with that of knowledge based on subjective experience and perception by means of which it is mediated. This chapter presents the theories that incorporate the subject–object relationships into a comprehensive observational framework. They also emphasize the coherence of subject and environment. The perceiver is viewed as an active subject; the rhythmic properties of all living phenomena are highlighted. The long-term effect of “selective visual exposure” in the early stages of development upon functional cell…
Prefix Stripping Re-Re-Revisited: MEG Investigations of Morphological Decomposition and Recomposition
2019
We revisit a long-standing question in the psycholinguistic and neurolinguistic literature on comprehending morphologically complex words: are prefixes and suffixes processed using the same cognitive mechanisms? Recent work using Magnetoencephalography (MEG) to uncover the dynamic temporal and spatial responses evoked by visually presented complex suffixed single words provide us with a comprehensive picture of morphological processing in the brain, from early, form-based decomposition, through lexical access, grammatically constrained recomposition, and semantic interpretation. In the present study, we find that MEG responses to prefixed words reveal interesting early differences in the la…
Maximizing reading: pattern analysis to describe points of gaze
2006
As people read texts, their points of gaze can be described either as a sequence or as a pattern of dots. If reading fixations are visualized as a pattern and their duration is graphically attributed to the 3 rd dimension, image processing techniques can be employed to describe individual reading styles. Two reader groups of text editors and of University students were matching according to parametric tests. Yet they appeared to have marked inter-subject variability of fixation distribution when individual cases were considered. To illustrate this, we applied a simple "Coulomb law" - like model that takes both fixation duration and spacing into account. Further the image entropy filter was …
Optical See-Through Head-Mounted Displays With Short Focal Distance: Conditions for Mitigating Parallax-Related Registration Error
2020
Optical see-through (OST) augmented reality head-mounted displays are quickly emerging as a key asset in several application fields but their ability to profitably assist high precision activities in the peripersonal space is still sub-optimal due to the calibration procedure required to properly model the user's viewpoint through the see-through display. In this work, we demonstrate the beneficial impact, on the parallax-related AR misregistration, of the use of optical see-through displays whose optical engines collimate the computer-generated image at a depth close to the fixation point of the user in the peripersonal space. To estimate the projection parameters of the OST display for a …
Quando la malattia nasce, cresce e muore «con» (συν-) il paziente. Terminologia del male congenito nel Corpus ippocratico
2019
The present study aims to investigate the use and semantics of the most common terminology used by the medical writers of the Hippocratic Collection in order to define diseases commonly considered to be of a “congenital” nature, with particular attention to nominal as well as verbal forms, composed by the prefixation syn-, indicating the different stages of the pathological process according to which disease is represented as a proper entity claimed to arise inside the patient, to develop, to became old and then also to die together with him or her. Individual constitution, familiarity, epigenetic factors such as conditions of growth during gestation or climatic conditions, age of the patie…
Etude d'un emmanchement fretté compte tenu de l'effet combiné des défauts de forme et d'état de surface
2012
The main purpose of this thesis is to present two contributions in the field of shrink fitassembly taking into account the defects of form and roughness surfaces. The first contributionconcerns the study of the influence of the defect forme on the characteristics of shrinked assemblyusing an approach based on finite element modeling. We found that this defect has a significantinfluence on the resistance of the assembly. The work already done in the laboratory of mechanicsat the University of Bourgogne have been confirmed. In the second contribution, we proposed tointegrate the surface defects (roughness) by creating a homogenized finite element interface. Thistechnique has facilitated the m…