Carcinome epidermoïde du larynx chez la femme

Le cancer du larynx est assez rare chez la femme. Cependant, il risque d’être en recrudescence à cause de l’augmentation du tabagisme féminin. Peu de travaux se sont consacrés à rechercher les spécificités du cancer du larynx chez la femme.But: Analyser le profil épidémiologique et clinique des femmes porteuses d’un carcinome épidermoïde du larynx et dégager les caractéristiques thérapeutiques, évolutives et les facteurs pronostiques chez cette population.Méthodes: étude rétrospective portant sur 50 femmes prises en charge pour un carcinome épidermoïde du larynx sur une période de treize ans (1994-2006).Résultats : L’âge moyen de nos patientes était de 63,5 ans. L’intoxication tabagique était retrouvée chez 32,6% des patientes. Chez 30% de nos patientes aucun facteur de risque n’a été retrouvé. Les signes cliniques étaient dominés par la dysphonie suivie de la dyspnée et la dysphagie. Les tumeurs prenaient naissanceau dépend de l’étage glottique dans 55,8% des cas. Nous avons relevé que 60,4% des tumeurs étaient vus à un stade évolué T3-T4 et que 95,3% des tumeurs étaient initialement classées N0. La chirurgie a été pratiquée chez 47,5% des patientes tandis que 16,2% ont reçu une radio-chimiothérapie. La survie globale cumulée était de 78,8% à 3 ans et de 73,5% à 5 ans.Conclusion : L’absence des facteurs de risque classiques chez un grand nombre de nos patientes laisse supposer le rôle d’autres facteurs étiopathogéniques dans la genèse du cancer du larynx chez la femme. Toute dysphonie chez la femme doit être explorée même en l’absence de facteurs de risque. La prise en charge et le pronostic semblent superposables à celui de l’homme.Mots clés : Tumeur – Larynx – Femme – Epidémiologie – TabagismeLaryngeal cancer is quite uncommun in women. However, it may be on the rise due to the increase in smoking among women. Few studies have been devoted to find the specifics of laryngeal cancer in women.Purpose: to analyze the epidemiological and clinical profile of squamous cell carcinoma of the larynx in women, and to identify therapeutic characteristics and prognostic factors in this population.Methods: retrospective study of 50 womens treated for squamous cell carcinoma of the larynx over a period of thirteen years (1994- 2006).Results: The mean age of our patients was 63.5 years. The tobacco abuse was found in 32.6% of patients. In 30% of our patients no risk factors were found. Clinical signs were dominated by dysphonia followed by dyspnea and dysphagia. Primary tumor was localized in glottis in 55.8% of cases. We found that 60.4% of tumors were seen at an advanced stage T3-T4 and 95.3% of the tumors were initially classified N0. The surgery was performed in 47.5% of patients, while 16.2% received chemoradiotherapy. The cumulative overall survival was 78.8% at 3 years and 73.5% at 5 years.Conclusion: The absence of conventional risk factors in a large number of our patients suggests the role of other etiologic factors in the genesis of laryngeal cancer in women. Every dysphonia in women should be explored even in the absence of risk factors. The  management and prognosis seem congruent with that of man.Key words: Tumor-larynx-women-epidemiology-smokin

Level densities and γ\gamma-ray strength functions in 170,171,172^{170,171,172}Yb

Level densities and radiative strength functions in $^{171}$Yb and $^{170}$Yb nuclei have been measured using the $^{171}$Yb($^3$He,$^3$He$^\prime\gamma$)$^{171}$Yb and $^{171}$Yb($^3$He,$\alpha\gamma$)$^{170}$Yb reactions. New data on $^{171}$Yb are compared to a previous measurement for $^{171}$Yb from the $^{172}$Yb($^3$He,$\alpha\gamma$)$^{171}$Yb reaction. Systematics of level densities and radiative strength functions in $^{170,171,172}$Yb are established. The entropy excess in $^{171}$Yb relative to the even-even nuclei $^{170,172}$Yb due to the unpaired neutron quasiparticle is found to be approximately 2$k_B$. Results for the radiative strength function from the two reactions lead to consistent parameters characterizing the ``pygmy'' resonances. Pygmy resonances in the $^{170,172}$Yb populated by the ($^3$He,$\alpha$) reaction appear to be split into two components for both of which a complete set of resonance parameters are obtained.Comment: 8 pages, 7 figure

Elastic shape matching of parameterized surfaces using square root normal fields.

In this paper we define a new methodology for shape analysis of parameterized surfaces, where the main issues are: (1) choice of metric for shape comparisons and (2) invariance to reparameterization. We begin by defining a general elastic metric on the space of parameterized surfaces. The main advantages of this metric are twofold. First, it provides a natural interpretation of elastic shape deformations that are being quantified. Second, this metric is invariant under the action of the reparameterization group. We also introduce a novel representation of surfaces termed square root normal fields or SRNFs. This representation is convenient for shape analysis because, under this representation, a reduced version of the general elastic metric becomes the simple \ensuremathL2\ensuremathL2 metric. Thus, this transformation greatly simplifies the implementation of our framework. We validate our approach using multiple shape analysis examples for quadrilateral and spherical surfaces. We also compare the current results with those of Kurtek et al. [1]. We show that the proposed method results in more natural shape matchings, and furthermore, has some theoretical advantages over previous methods

Structure and Microstructure Properties of Ball Milled Fe-Zn

Nanocrystalline Fe10 %Zn and Fe30 %Zn alloys have been prepared from pure elemental powders by mechanical alloying processing in a high energy planetary ball-mill. Microstructural, structural, and magnetic characterizations of the powders were investigated by X-ray diffraction, and vibrating sample magnometer. The crystallite size reduction to the nanometer scale is accompanied by an increase in the atomic level strain. The reaction between Fe and Zn leads to the formation of a bcc Fe(Zn) solid solution with a lattice parameter close to (0.2912 nm for Fe30 %Zn and 0,2885 nm for Fe10 %Zn) after 5 h of milling. The complete dissolution of the elemental Zn powders in the a-Fe lattice gives rise to the formation of a highly disordered Fe(Zn) solid solution, where a-Fe(Zn) nanograins have a crystallite size of (229,29 Å for Fe10 %Zn (24 h) 30,09 Å for Fe30 %Zn (24 h), on prolonged milling time. The coercivity and magnetization values are 18,90 (Fe10 %Zn)Oe and 26,59 (Fe30 %Zn) emu/g, respectively, after 24 h of milling. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/3514

Anatomie du nerf laryngé externe et ses applications chirurgicales

Objectif : La lésion de la branche externe du nerf laryngé supérieur (BeNLS) , non rare lors de la chirurgie thyroïdienne, est responsable de modifications de la voix et de troubles de la déglutition. Mais ses différentes variantes anatomiques ainsi que les faibles taux de son identification ont découragé les chirurgiens de son repérage systématique.Le but de notre travail est de faire une description anatomique des variantes de la BeNLS , d’estimer la fréquence des nerfs à risque et de décrire les techniques chirurgicales de son identification pour proposer une approche systématique de sa préservation.Matériel et méthodes: Il s’agit d’une étude prospective portant sur 10 patients ayant eu une chirurgie thyroïdienne et chez qui on a procédé à un repérage systématique de la BeNLS dans l’espace avasculaire de Reeve. On a utilisé la classification de Cernea pour regrouper les variations anatomiques rencontrées.Résultats : On a procédé à la dissection de 13 nerfs. Le taux  d’identification de la BeNLS était de 84% , 38% sont de Type 2a , 46% sont de Type 2b. Des complications ont été notées chez 3 patients dont 2 qui présentent une BeNLS de Type Ni.Conclusion : On pense que la variante anatomique de la BeNLS de type 2 présente un risque de blessure car le chirurgien manipule le pédicule supérieur au niveau du centimètre critique situé au-dessus du pôle supérieur de la thyroïde. Le sous-type 2b , le plus fréquent dans notre série , est une variante à haut risque. L’identification du nerf lors de la chirurgie thyroïdienne est la solution de choix.Mots-clés : Branche externe du nerf laryngé supérieur, anatomie, muscle crico-thyroïdien, chirurgie thyroïdienne, voix

Developing and evaluating cybersecurity competencies for students in computing programs

Changes due to technological development in the workplace are putting pressure on academia to keep pace with the changing nature of work. Due to the growing need for cybersecurity professionals, universities improve their cybersecurity programs to develop qualified cybersecurity competencies. The purpose of this study is to validate the cybersecurity knowledge, skills, and abilities (KSAs) competencies of cybersecurity degree programs using a fuzzy linguistic group decision-making method. This study shows that cybersecurity knowledge is essential, along with technical skills and human abilities for cybersecurity professionals.</jats:p

Superdeformation in 198^{198}Po

The $^{174}$Yb($^{29}$Si,5n) reaction at 148 MeV with thin targets was used to populate high-angular momentum states in $^{198}$Po. Resulting $\gamma$ rays were observed with Gammasphere. A weakly-populated superdeformed band of 10 $\gamma$-ray transitions was found and has been assigned to $^{198}$Po. This is the first observation of a SD band in the $A \approx 190$ region in a nucleus with $Z > 83$. The ${\cal J}^{(2)}$ of the new band is very similar to those of the yrast SD bands in $^{194}$Hg and $^{196}$Pb. The intensity profile suggests that this band is populated through states close to where the SD band crosses the yrast line and the angular momentum at which the fission process dominates.Comment: 10 pages, revtex, 2 figs. available on request, submitted to Phys. Rev. C. (Rapid Communications