930 resultados para operative technique


Relevância:

20.00% 20.00%

Publicador:

Resumo:

Objectives: This study evaluates the periodontal health status and the esthetic results of teeth subjected to orthodontic traction, after their exposure by an apically positioned flap. Study design: Fifteen patients were included in the study, ages between 11 and 28 years old. The fenestrated teeth and their homologous contralateral normally erupted teeth, used as control, were evaluated. Results: Statistically significant differences were found in the position of the gingival margin (p = 0.005), with an average distance between cemento-enamel junction (CEJ) and gingival margin of 2.47 mm (SD 1.19) in control teeth and of 1 mm (SD 1.31) in the operated teeth, and in the depth of palatal probing (p = 0.031), with 2.1 mm (SD 0.9) for the experimental teeth and 1.7 mm (SD 0.8) for the control teeth. The gingival index, the bleeding during probing and the probing depth did not show statistically significant differences. The patient"s subjective esthetic evaluation was more favorable for the control teeth in most of the cases. Conclusions: The surgical approach for the impacted teeth by means of the apically positioned flap resulted to be a predictable technique allowing the maintenance of the periodontal health on a long-term basis.

Relevância:

20.00% 20.00%

Publicador:

Resumo:

Tämän tutkintotyön tavoitteena on selvittää operatiivista ostotoimintaa, joka sisältää oikea-aikaisen tilausrytmin ja tasapainoisen tilausmäärän määrityksen sekä saapuvan tavaravirran mukauttamisen myyntiin tai kulutukseen kokonaisuutena. Tässä tutkimuksessa tarkastellaan myös varastojen merkitystä ja ostotoiminnan kannalta keskeisimpiä tehokkaaseen varastonohjaukseen liittyviä tunnuslukuja. Tutkimus sisältää lääkkeiden toimitusketjun kuvauksen, koska se poikkeaa merkittävästi muista toimialoista. Tämä tutkintotyö on syntetisoiva kirjallisuustutkimus. Tutkintotyön empiirisessä osassa analysoidaan aluksi case-yrityksen vaihto-omaisuusvaraston ohjausta ostotoiminnan näkökulmasta ABC analyysiin pohjautuen. Tämän jälkeen ostotoimintaa analysoidaan tarkemmin tiettyjen toimittajien osalta. Lopuksi laaditaan optimaalinen tilausrytmi ja tilausmäärät sekä ostobudjetti yhden toimittajan tuotteille. ABC analyysia voidaan hyödyntää työkaluna määriteltäessä miten erilaisten tuotteiden materiaalivirtoja tulisi ostotoiminnan kannalta ohjata. Analyysi perustuu resurssien keskittämiseen sinne missä tuotto on suurin.

Relevância:

20.00% 20.00%

Publicador:

Resumo:

In this paper we propose the use of the independent component analysis (ICA) [1] technique for improving the classification rate of decision trees and multilayer perceptrons [2], [3]. The use of an ICA for the preprocessing stage, makes the structure of both classifiers simpler, and therefore improves the generalization properties. The hypothesis behind the proposed preprocessing is that an ICA analysis will transform the feature space into a space where the components are independent, and aligned to the axes and therefore will be more adapted to the way that a decision tree is constructed. Also the inference of the weights of a multilayer perceptron will be much easier because the gradient search in the weight space will follow independent trajectories. The result is that classifiers are less complex and on some databases the error rate is lower. This idea is also applicable to regression

Relevância:

20.00% 20.00%

Publicador:

Resumo:

La surveillance financière contemporaine est toute entière associée à la volonté de tirer avantage des technologies de l'information et de la communication dans le but d'identifier et de suivre les flux de capitaux au nom de la lutte contre le blanchiment d'argent et le financement du terrorisme. Légitimées pour éviter tout blocage abrupt des mobilités, les techniques destinées à financer ces flux tendent à cadrer la circulation financière. Leur mise en place crée des obligations pour de nombreux acteurs économiques érigés en filtres protecteurs de l'architecture financière internationale. L'importance de cette logique de traçabilité a été amplifiée au lendemain des attentats du 11 septembre 2001, avec une stigmatisation accrue de tout ce qui n'est pas "traçable". L'objectif de cet article est précisément d'éclairer cette articulation entre promotion de la traçabilité et effets de stigmatisation dans un contexte bien précis de "panique morale" et de mise en priorité des problématiques antiterroristes. Le traitement réservé aux systèmes informels de transfert d'argent, souvent regroupés de manière abusive sous le terme <i>hawala</i>, en est l'exemple frappant.

Relevância:

20.00% 20.00%

Publicador:

Resumo:

OBJECTIVE: Skeletal Muscle Biopsy is a minor surgical procedure for the diagnosis of different neuromuscular pathological conditions and has recently gained popularity also in the research field of age-related muscular modifications and sarcopenia. Few studies focused on the application of mini-invasive muscular biopsy in both normal and pathological conditions. The aim of our study was to describe a mini invasive ultrasound-guided skeletal muscular biopsy technique in complete spinal cord injured (SCI) patients and healthy controls with a tri-axial end-cut needle. PATIENTS AND METHODS: Skeletal muscle biopsies were collected from 6 chronic SCI patients and 3 healthy controls vastus lateralis muscle with a tri-axial end cut needle (Biopince© - Angiotech). Muscle samples were stained for ATPase to determine fibers composition, moreover, gene expression of cyclooxygenase-1 (COX-1) and prostaglandin E2 receptor has been analyzed by Real Time RT-PCR. RESULTS: All the procedures were perfomed easily without failures and complications. Control tissue was macroscopically thicker than SCI one. Control specimen displayed an equal distribution of type I and type II fibers, while SCI sample displayed a prevalence of type II fibers SCI specimen displayed a significant reduction in COX-1 gene expression. This mini-invasive approach was easy, accurate and with low complication rate in performing skeletal muscle biopsy in both SCI patients and controls. CONCLUSIONS: This technique could be useful in conditions in which the overall quantity of specimen required is small like for molecular biology analysis. For histological diagnostic purposes and/or conditions in which the original tissue is already pathologically modified, this technique should be integrated with more invasive techniques.

Relevância:

20.00% 20.00%

Publicador:

Resumo:

The present study proposes a method based on ski fixed inertial sensors to automatically compute spatio-temporal parameters (phase durations, cycle speed and cycle length) for the diagonal stride in classical cross-country skiing. The proposed system was validated against a marker-based motion capture system during indoor treadmill skiing. Skiing movement of 10 junior to world-cup athletes was measured for four different conditions. The accuracy (i.e. median error) and precision (i.e. interquartile range of error) of the system was below 6ms for cycle duration and ski thrust duration and below 35ms for pole push duration. Cycle speed precision (accuracy) was below 0.1m/s (0.005m/s) and cycle length precision (accuracy) was below 0.15m (0.005m). The system was sensitive to changes of conditions and was accurate enough to detect significant differences reported in previous studies. Since capture volume is not limited and setup is simple, the system would be well suited for outdoor measurements on snow.

Relevância:

20.00% 20.00%

Publicador:

Resumo:

PURPOSE: A surgical gastrostomy is mandatory in cases where a PEG is not feasible. Various minimally invasive techniques have been described, but many involve unusable materials in small children and/or have risk of disunion. We describe a technique for true Stamm gastrostomy performed by laparoscopy (LSG) with a purse string suture and four points of attachment onto the wall. METHOD: We reviewed 20 children who underwent an LSG from 2010 to 2013. After incision of the skin at the location planned for the gastrostomy, using three 3-5mm ports the stomach is fixed to the wall by three suspension stitches, which are entered and then emerged subcutaneously. A fourth stitch of attachment is used to make an award on the stomach and tie around the gastrostomy tube. RESULTS: Mean age was 4.2years, with 70% aged <2years. All children were malnourished, most often severely. All but two underwent a concomitant fundoplication. Feeding through the gastrostomy started on D0 or D1. Total feeding by gastrostomy was achieved in a mean duration of 2.9day. Mean hospital stay was 4.5days. There was no perioperative complication. Mean follow-up was 14months. Once, the balloon was accidently deflated and reinflated in the wall leading to its necrosis. Five peristomial granulomas were noticed. It was always possible to replace the tube by a gastrostomy device at least 6weeks after surgery. CONCLUSION: This new technique for true Stamm gastrostomy by laparoscopy reproduces exactly the one done by laparotomy, without special equipment. It can be made since the neonatal period, in all the circumstances when a laparoscopy is possible.