1000 resultados para Canal companies


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The Attorney General’s Consumer Protection Division receives hundreds of calls and consumer complaints every year. Follow these tips to avoid unexpected expense and disappointments. This record is about:Student Loan “Rescue” Companies Are No Lifeline!

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BACKGROUND AND PURPOSE: Patients with symptoms of semicircular canal dehiscence often undergo both CT and MR imaging. We assessed whether FIESTA can replace temporal bone CT in evaluating patients for SC dehiscence. MATERIALS AND METHODS: We retrospectively reviewed 112 consecutive patients (224 ears) with vestibulocochlear symptoms who underwent concurrent MR imaging and CT of the temporal bones between 2007 and 2009. MR imaging protocol included a FIESTA sequence covering the temporal bone (axial 0.8-mm section thickness, 0.4-mm spacing, coronal/oblique reformations; 41 patients at 1.5T, 71 patients at 3T). CT was performed on a 64-row multidetector row scanner (0.625-mm axial acquisition, with coronal/oblique reformations). Both ears of each patient were evaluated for dehiscence of the superior and posterior semicircular canals in consensual fashion by 2 neuroradiologists. Analysis of the FIESTA sequence and reformations was performed first for the MR imaging evaluation. CT evaluation was performed at least 2 weeks after the MR imaging review, resulting in a blinded comparison of CT with MR imaging. CT was used as the reference standard to evaluate the MR imaging results. RESULTS: For SSC dehiscence, MR imaging sensitivity was 100%, specificity was 96.5%, positive predictive value was 61.1%, and negative predictive value was 100% in comparison with CT. For PSC dehiscence, MR imaging sensitivity was 100%, specificity was 99.1%, positive predictive value was 33.3%, and negative predictive value was 100% in comparison with CT. CONCLUSIONS: MR imaging, with a sensitivity and negative predictive value of 100%, conclusively excludes SSC or PSC dehiscence. Negative findings on MR imaging preclude the need for CT to detect SC dehiscence. Only patients with positive findings on MR imaging should undergo CT evaluation.

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Objective: To report a single-center experience treating patients with squamous- cell carcinoma of the anal canal using helical Tomotherapy (HT) and concurrent chemotherapy (CT).Materials/Methods: From October 2007 to February 2011, 55 patients were treated with HT and concurrent CT (5-fluorouracil/capecitabin and mitomycin) for anal squamous-cell carcinoma. All patients underwent computed- tomography-based treatment planning, with pelvic and inguinal nodes receiving 36 Gy in 1.8 Gy/fraction. Following a planned 1-week break, primary tumor site and involved nodes were boosted to a total dose 59.4 Gy in 1.8 Gy/fraction. Dose-volume histograms of several organs at risk (OAR; bladder, small intestine, rectum, femoral heads, penile bulb, external genitalia) were assessed in terms of conformal avoidance. All toxicity was scored according to the CTCAE, v.3.0. HT plans and treatment were implemented using the Tomotherapy, Inc. software and hardware. For dosimetric comparisons, 3D RT and/or IMRT plans were also computed for some of the patients using the CMS planning system, for treatment with 6-18 MV photons and/or electrons with suitable energies from a Siemens Primus linear accelerator equipped with a multileaf collimator.Locoregional control and survival curves were compared with the log-rank test, and multivariate analysis by the Cox model.Results: With 360-degree-of-freedom beam projection, HT has an advantage over other RT techniques (3D or 5-field step-and-shot IMRT). There is significant improvement over 3D or 5-field IMRT plans in terms of dose conformity around the PTV, and dose gradients are steeper outside the target volume, resulting in reduced doses to OARs. Using HT, acute toxicity was acceptable, and seemed to be better than historical standards.Conclusions: Our results suggest that HT combined with concurrent CT for anal cancer is effective and tolerable. Compared to 3D RT or 5-field step-andshot IMRT, there is better conformity around the PTV, and better OAR sparing.

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La sténose du canal médullaire lombaire peut aujourd'hui se traiter de deux façons différentes à savoir le traitement non- chirurgical (physiothérapie, AINS, infiltrations de corticostéroïdes) pour les patients souffrant de symptômes modérés et le traitement chirurgical (décompression canalaire) pour les patients avec des symptômes graves et des déficits fonctionnels. Plusieurs études ont tenté de comparer ces deux approches thérapeutiques. Pour ce faire, on se servit de questionnaires d'évaluation subjective des capacités fonctionnelles (Oswestry Disability Index) souvent associés à des mesures des capacités de marche en laboratoire.¦Notre étude utilise des capteurs gyroscopiques placés sur le corps des sujets afin de mesurer des paramètres de positions, de transferts de position et de la marche pendant 5 jours consécutifs. Cette méthode nous permet d'effectuer ces mesures objectives dans le cadre de vie des patients, dans leurs activités quotidiennes. Nous espérons ainsi obtenir des résultats qui soient plus représentatifs de leur mobilité.¦Dans le cadre de mon travail de master, je me suis concentré sur la phase pilote d'une étude du Dr Schizas. Cette phase ne regroupe qu'un nombre limité de sujets (14) répartis en deux groupes de 7 suivant le traitement reçu (chir. contre non-chir). Nous avons alors émis trois hypothèses. La première dit que, avant traitement, les patients non-opérés marchent mieux que les patients destinés à la chirurgie (symptômes moins intenses). La deuxième postule que le traitement chirurgical permet d'atténuer suffisamment les symptômes pour que les capacités de marche se rapprochent de celles des patients non opérés avant traitement (efficacité de la chirurgie). Pour finir, notre dernière hypothèse prétend que, après la chirurgie, les patients opérés voient une amélioration de leur capacité de marche par rapport à celles qu'ils avaient avant l'intervention. 4 paramètres ont été retenus afin de caractériser la marche: la longueur des pas, la vitesse, la cadence des pas et la distance parcourue. C'est à partir des moyennes et des coefficients de variabilité de ces paramètres que nous avons effectué nos comparaisons.¦Après l'analyse de nos résultats, il s'avère que nos valeurs tendent à valider nos trois hypothèses à quelques exceptions près. Hypothèse n°1: avant traitement, les patients non destinés à la chirurgie marchent plus vite (2.96 contre 2.87 P 0.84) et avec une cadence des pas plus importante (101.78 contre 94.59 P 0.047). Seule la longueur des pas est plus importante chez les futurs opérés (1.01 contre 0.96 P 0.72). Les coefficients de variabilité (CV) sont tous plus faibles chez les non-opérés (marche plus homogène). Concernant notre 2ème hypothèse, nous sommes plutôt satisfaits des résultats. A 3 mois après la chirurgie, les patients opérés, comparés aux non-opérés avant traitement ont une longueur de pas similaire (1.02 contre 0.96 P 0.70) et une vitesse plus importante (3.08 contre 2.96 P 0.83). Seule la cadence des pas est plus élevée chez les non-opérés (101.78 contre 100.23 P 0.72). Les CV confirment également un rapprochement des capacités de marche de nos patients opérés de celles des non-opérés. Pour la troisième hypothèse, nous sommes heureux de constater que les moyennes et les CV sont tous en accord avec l'idée de base. A trois mois post-traitement les patients opérés font des pas de longueur similaire (1.02 contre 1.01 P 0.93), marchent plus vite (3.08 contre 2.89 P 0.52) et à une cadence plus importante (100.23 contre 94.59 P 0.19).¦Avec seulement 14 patients, il est bien clair que ces résultats n'ont que peu de valeur statistique. Cependant, ces résultats nous encouragent à poursuivre cette étude sur un collectif de patients plus important dans le but de mieux comprendre les troubles de la mobilité des personnes atteintes de canal lombaire étroit.

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Projecte presentat a Racons Públics - FAD 2013

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Manufactured nanoparticles are introduced into industrial processes, but they are suspected to cause similar negative health effects as ambient particles. The poor knowledge about the scale of this introduction did not allow global risk analysis so far. In 2006 a targeted telephone survey among Swiss companies (1) showed the usage of nanoparticles in a few selected companies but did not provide data to extrapolate on the totality of the Swiss workforce. To gain this kind of information a layered representative questionnaire survey among 1'626 Swiss companies was conducted in 2007. Data was collected about the number of potentially exposed persons in the companies and their protection strategy. The response rate was 58.3%. An expected number of 586 companies (95%−confidence interval 145 to 1'027) was shown by this study to use nanoparticles in Switzerland. Estimated 1'309 (1'073 to 1'545) workers do their job in the same room as a nanoparticle application. Personal protection was shown to be the predominant type of protection means. Companies starting productions with nanomaterials need to consider incorporating protection measures into the plans. This will not only benefit the workers' health, but will also likely increase the competitiveness of the companies. Technical and organisational protection means are not only more cost−effective on the long term, but are also easier to control. Guidelines may have to be designed specifically for different industrial applications, including fields outside nanotechnology, and adapted to all sizes of companies.

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OBJECTIVE: To evaluate the dynamic properties of the horizontal vestibulo-ocular reflex (h-VOR) in the acute stage of two common labyrinthine diseases that provoke severe attacks of vertigo with spontaneous nystagmus: vestibular neuritis (vestibular loss alone) and viral labyrinthitis (cochleovestibular loss). MATERIAL AND METHODS: Sixty-three patients were investigated: 42 were diagnosed with vestibular neuritis and 21 with viral labyrinthitis. The h-VOR function was evaluated by conventional caloric and impulsive testing. A simplified model of vestibular function was used to analyze the vestibulo-ocular response to rotational stimulation. RESULTS: The results showed a significant difference in h-VOR characteristics between the two pathologies. Patients with vestibular neuritis exhibited a strong horizontal semicircular canal deficit, but no h-VOR asymmetry between the two rotational directions. In contrast, patients with viral labyrinthitis demonstrated moderate canal paresis and a marked h-VOR deficit in rotation toward the affected ear. CONCLUSION: These findings support the hypothesis that the h-VOR dynamic asymmetry that occurs after an acute unilateral inner ear lesion is not due to canal dysfunction alone, but involves complex adaptive changes in the central VOR that may implicate the otolith system. Based on histopathologic and clinical differences in the two pathologies reported in the literature, we postulate that this otolith-canal interaction is mainly linked to the loss of saccular function.

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Resum en anglès del projecte de recerca L'empresa xarxa a Catalunya. TIC, productivitat, competitivitat, salaris i beneficis a l'empresa catalana té com a objectiu principal constatar que la consolidació d'un nou model estratègic, organitzatiu i d'activitat empresarial, vinculat amb la inversió i l'ús de les TIC (o empresa xarxa), modifica substancialment els patrons de comportament dels resultats empresarials, en especial la productivitat, la competitivitat, les retribucions dels treballadors i el benefici. La contrastació empírica de les hipòtesis de treball l'hem feta per mitjà de les dades d'una enquesta a una mostra representativa de 2.038 empreses catalanes. Amb la perspectiva de l'impacte de la inversió i l'ús de les TIC no s'aprecia una relació directa entre els processos d'innovació digital i els resultats de l'activitat de l'empresa catalana. En aquest sentit, hem hagut de segmentar el teixit productiu català per a buscar les organitzacions en què el procés de coinnovació tecnològica digital i organitzativa és més present i en què la intensitat de l'ús del coneixement és un recurs molt freqüent per a poder copsar impactes rellevants en els principals resultats empresarials. Això és així perquè l'economia catalana, avui, presenta una estructura productiva dual.