Search results for "LAB"

Dispositifs interculturels à distance

2008

In the context of intercultural online communication, certain dimensions of ICT we might call “figures sensibles” (Boutaud 2006) can be critically useful to understand co-construction, especially when these dimensions are also constitutive of an educational context. Thus, transparency, performance and conviviality help us interpret what can be called collaborative online interaction. Dispositive memory thrives on these dimensions and completes them. It explains in part the continuity of socially constructed identity of the community in question. It is the community aspect which in our context imposes itself despite cultural differences.

Dažādu ielabošanas līdzekļu izmantošanas ietekme uz elementu saturu jaunu hibrīdalkšņu koksnē

2022

Dažādu ielabošanas līdzekļu izmantošanas ietekme uz elementu saturu jaunu hibrīdalkšņu koksnē. Isajeva A., zinātniskais vadītājs Mg.Chem. Māris Bērtiņš, Bakalaura darbs, 32 lappuses, 10 attēli, 7 tabulas un 26 literatūras avoti. Latviešu valodā. Bakalaura darbā tika noteikts elementu plūsma hibrīdalkšņa koksnē, kuru koki bija apstrādāti ar dažādiem ielabošanas līdzekļiem, izmantojot ICP-MS metodi. Darbā veikta hibrīdalkšņa paraugu sagatavošana ar slapjo mineralizāciju slēgtos traukos. Tika analizēta elementu uzkrāšanas un sadalījums koksnē, atkarība no ielabošanas līdzekļiem.

Il diritto di difesa degli staff member nei sistemi di giustizia interna dell'Organizzazione Internazionale del Lavoro, dell'Organizzazione delle Naz…

A novel framework for MR image segmentation and quantification by using MedGA

2019

BACKGROUND AND OBJECTIVES: Image segmentation represents one of the most challenging issues in medical image analysis to distinguish among different adjacent tissues in a body part. In this context, appropriate image pre-processing tools can improve the result accuracy achieved by computer-assisted segmentation methods. Taking into consideration images with a bimodal intensity distribution, image binarization can be used to classify the input pictorial data into two classes, given a threshold intensity value. Unfortunately, adaptive thresholding techniques for two-class segmentation work properly only for images characterized by bimodal histograms. We aim at overcoming these limitations and…

Computer-Assisted Approaches for Uterine Fibroid Segmentation in MRgFUS Treatments: Quantitative Evaluation and Clinical Feasibility Analysis

2019

Nowadays, uterine fibroids can be treated using Magnetic Resonance guided Focused Ultrasound Surgery (MRgFUS), which is a non-invasive therapy exploiting thermal ablation. In order to measure the Non-Perfused Volume (NPV) for treatment response assessment, the ablated fibroid areas (i.e., Region of Treatment, ROT) are manually contoured by a radiologist. The current operator-dependent methodology could affect the subsequent follow-up phases, due to the lack of result repeatability. In addition, this fully manual procedure is time-consuming, considerably increasing execution times. These critical issues can be addressed only by means of accurate and efficient automated Pattern Recognition ap…

Gated mesoporous silica nanoparticles for the controlled delivery of drugs in cancer cells

2015

In recent years, mesoporous silica nanoparticles (MSNs) have been used as effective supports for the development of controlled-release nanodevices that are able to act as multifunctional delivery platforms for the encapsulation of therapeutic agents, enhancing their bioavailability and overcoming common issues such as poor water solubility and poor stability of some drugs. In particular, redox-responsive delivery systems have attracted the attention of scientists because of the intracellular reductive environment related to a high concentration of glutathione (GSH). In this context, we describe herein the development of a GSH-responsive delivery system based on poly(ethylene glycol)- (PEG-)…

Protective effect of mesoporous silica particles on encapsulated folates.

2016

Mesoporous silica particles (MSPs) are considered suitable supports to design gated materials for the encapsulation of bioactive molecules. Folates are essential micronutrients which are sensitive to external agents that provoke nutritional deficiencies. Folates encapsulation in MSPs to prevent degradation and to allow their controlled delivery is a promising strategy. Nevertheless, no information exists about the protective effect of MSPs encapsulation to prevent their degradation. In this work, 5-formyltetrahydrofolate (FO) and folic acid (FA) were entrapped in MSPs functionalized with polyamines, which acted as pH-dependent molecular gates. The stability of free and entrapped vitamins af…

Monitoring pH and ORP in a SHARON reactor

2011

This paper analyses the valuable information provided by the on-line measurements of pH and oxidation reduction potential (ORP) in a continuous single high ammonia removal over nitrite (SHARON) reactor. A laboratory-scale SHARON reactor equipped with pH, ORP, electric conductivity and dissolved oxygen (DO) probes has been operated for more than one year. Nitrogen removal over nitrite has been achieved by adding methanol at the beginning of anoxic stages. Time evolution of pH and ORP along each cycle allows identifying the decrease in nitritation rate when ammonia is consumed during the aerobic phase and the end of the denitrification process during the anoxic phase. Therefore, monitoring pH…

Trayectorias laborales de autóctonos e inmigrantes en España: entre la convergencia y la segmentación. Un análisis de la Muestra Continua de Vida Lab…

2011

Este trabajo es un análisis de las trayectorias laborales de trabajadores autóctonos y de origen extranjero a partir de la muestra continua de vidas laborales de la seguridad social (en adelante MCVL). Se exploraron dos hipótesis. Por un lado, la antigüedad en el mercado de trabajo y la cualificación producen con el tiempo una “asimilación ocupacional de la inmigración” con los trabajadores autóctonos; por otro, la inserción de la inmigración en determinados nichos del mercado laboral limita la convergencia con los trabajadores autóctonos. Los resultados señalan que la asimilación se produce de forma estratificada en algunas pocas categorías profesionales, mientras persiste la brecha de acu…

In search of the « good practice »: managing time to frame inter-organizational collaboration

2017

Communication donnée dans la section : Sub-theme 10 : (SWG) Becoming Good: How to Study the Emergence of Ethical Practice in Organizing; International audience