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OALib Journal期刊

ISSN: 2333-9721

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2019 ( 22 )

2018 ( 169 )

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匹配条件: “ F. Amenzouy” ,找到相关结果约144246条。
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Cerebral Langerhans Cell Histiocytosis: A Case Report  [PDF]
H. El Mansouri, S. Assagau, A. Benhammouda, F. Amenzouy, M. Oauli, N. Cherif Idrissi Ganouni
Open Access Library Journal (OALib Journal) , 2019, DOI: 10.4236/oalib.1105115
Abstract:
Langerhans cells histiocytosis (LCH) is a disease caused by the proliferation and abnormal accumulation of Langerhans cells in different tissues and organs. It is a rare disease that still hides many of its mysteries as to its etiology and pathophysiology. The cerebral localization remains exceptional and dominated by hypothalamic-pituitary axis involvement. We report a case of a 20-year-old patient followed for acquired central diabetes insipidus with Panhypopituitarism and multiple dermatological lesions, who recently had visual acuity decline with progressive cerebellar syndrome in a state of apyrexia. Brain MRI showed multiples scattered plaques and nodular lesions involving the periventricular white matter, the basal ganglia, cerebellum, brainstem and cervical medulla. The two diagnoses suggested in this clinical presentation sarcoidosis with pituitary localization and cerebral Langerhans cells histiocytosis. A skin biopsy confirmed the diagnosis of langherans cell histiocytosis.
Klippel-Trenaunay Syndrome: A Rare Cause of Vaginal Bleeding in the Prepubescent Girl  [PDF]
Laila Essabar, Siham Amenzouy, Fatima Zohra Oudghiri, Lamia Kerboubi, Badr Sououd Benjelloun Dakhama
Journal of Biosciences and Medicines (JBM) , 2016, DOI: 10.4236/jbm.2016.411001
Abstract: Klippel-Trénaunay syndrome (KTS) is an uncommon congenital disorder with unknown etiology that consists of mixed vascular malformations. Visceral organs may also be involved leading to a variety of manifestations. Although seemingly uncommon, genital tract involvement can occur and be a source of significant morbidity. We hereby describe a case of KTS of a 7-year-old female patient presenting with genital bleeding, large venous and capillary malformations and soft tissue hypertrophy of right limb. Patient was treated conservatively and asked to follow-up regularly. KTS should be kept on mind as a cause of vaginal bleeding in preteen girls especially those with suggestive clinical features. Management of this complex condition is challenging because of its progressive nature and wide range of disease severity.
Kroniek
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Nieuwe West-Indische Gids , 1949,
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Kroniek
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Nieuwe West-Indische Gids , 1949,
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Kroniek
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Nieuwe West-Indische Gids , 1947,
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Kroniek
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Nieuwe West-Indische Gids , 1949,
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Kroniek
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Nieuwe West-Indische Gids , 1949,
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The Lagrangian Method for a Basic Bicycle  [PDF]
F. Talamucci
Journal of Applied Mathematics and Physics (JAMP) , 2014, DOI: 10.4236/jamp.2014.24007
Abstract:

The ground plan in order to disentangle the hard problem of modelling the motion of a bicycle is to start from a very simple model and to outline the proper mathematical scheme: for this reason the first step we perform lies in a planar rigid body (simulating the bicylcle frame) pivoting on a horizontal segment whose extremities, subjected to nonslip conditions, oversimplify the wheels. Even in this former case, which is the topic of lots of papers in literature, we find it worthwhile to pay close attention to the formulation of the mathematical model and to focus on writing the proper equations of motion and on the possible existence of conserved quantities. In addition to the first case, being essentially an inverted pendulum on a skate, we discuss a second model, where rude handlebars are added and two rigid bodies are joined. The geometrical method of Appell is used to formulate the dynamics and to deal with the nonholonomic constraints in a correct way. At the same time the equations are explained in the context of the cardinal equations, whose use is habitual for this kind of problems. The paper aims to a threefold purpose: to formulate the mathematical scheme in the most suitable way (by means of the pseudovelocities), to achieve results about stability, to examine the legitimacy of certain assumptions and the compatibility of some conserved quantities claimed in part of the literature.

Statistical Foundation of Empirical Isotherms  [PDF]
F. Brouers
Open Journal of Statistics (OJS) , 2014, DOI: 10.4236/ojs.2014.49064
Abstract: We show that most of the empirical or semi-empirical isotherms proposed to extend the Langmuir formula to sorption (adsorption, chimisorption and biosorption) on heterogeneous surfaces in the gaseous and liquid phase belong to the family and subfamily of the BurrXII cumulative distribution functions. As a consequence they obey relatively simple differential equations which describe birth and death phenomena resulting from mesoscopic and microscopic physicochemical processes. Using the probability theory, it is thus possible to give a physical meaning to their empirical coefficients, to calculate well defined quantities and to compare the results obtained from different isotherms. Another interesting consequence of this finding is that it is possible to relate the shape of the isotherm to the distribution of sorption energies which we have calculated for each isotherm. In particular, we show that the energy distribution corresponding to the Brouers-Sotolongo (BS) isotherm [1] is the Gumbel extreme value distribution. We propose a generalized GBS isotherm, calculate its relevant statistical properties and recover all the previous results by giving well defined values to its coefficients. Finally we show that the Langmuir, the Hill-Sips, the BS and GBS isotherms satisfy the maximum Bolzmann-Shannon entropy principle and therefore should be favoured.
The Fractal (BSf) Kinetics Equation and Its Approximations  [PDF]
F. Brouers
Journal of Modern Physics (JMP) , 2014, DOI: 10.4236/jmp.2014.516160
Abstract: We discuss the Brouers-Sotolongo fractal (BSf) kinetics model. This formalism interpolates between the first and second order kinetics. But more importantly, it introduces not only a fractional order n but also a fractal time parameter a which characterizes the time variation of the rate constant. This exponent appears in non-exponential relaxation and complex reaction models as demonstrated by the extended use of the Weibull and Hill kinetics which are the two most popular approximations of the BSf (n, a) kinetic equation as well in non-Debye relaxation formulas. We show that the use of nonlinear programs allows an easy and precise fitting of the data yielding the BSf parameters which have simple physical interpretations.
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