Sentinel node (SN) biopsy of head and neck cancer is still considered investigational, and agreement on the width of the surgical sampling has not yet been reached. From May 1999 to Dec 2009, 209 consecutive patients entered a prospective study: 61.7% had primary tumour of the oral cavity and 23.9% of the oropharynx. SN was not found in 26 patients. Based on these data and definitive histopatho...

The subject of this work is computational modeling of neutron transport relevant to economical and safe operation of nuclear facilities. The general mathematical model of neutron transport is provided by the linear Boltzmann’s transport equation and the thesis begins with its precise mathematical formulation and presentation of known conditions for its well-posedness. In the following part, we ...

R. H. Schelp conjectured that if G is a graph with |V (G)| = R(Pn, Pn) such that δ(G) > 3|V (G)| 4 , then in every 2-colouring of the edges of G there is a monochromatic Pn. In other words, the Ramsey number of a path does not change if the graph to be coloured is not complete but has large minimum degree. Here we prove Ramsey-type results that imply the conjecture in a weakened form, first rep...

ةصلاخلا بكرملل ةدیدج تاقتشم ریضحت ىلا ثحبلا يمری 4,3,1 ةیتلاا تلاعافتلا ءارجا للاخ نم لوزایادایاث : ًلاوأ : ب كرملل فیش ةدعاق ریضحت ) 2 و نیما 5 و تبكرم 4,3,1 لوزا یادایاث ( يلیفو یلكوینلا ضیو عتلا ءارجاو ةدعاقلل يرتسلاا ب كرملا نیو كت ى لا يدؤ یل مویدو صلا دیسكوثیا دو جوب ل ثیلاا تاتیسا ومورب عم ) 3 ( ، يذ لا یازاردیھلا عم ھتلعافم تمت ن 99 % د یازاردیھلا قتشم ریضحتل ) 4 ( فیش دعاوق نم د یدع...

Schur studied limits of the arithmetic means An of zeros for polynomials of degree n with integer coefficients and simple zeros in the closed unit disk. If the leading coefficients are bounded, Schur proved that lim supn→∞ |An| ≤ 1 − √ e/2. We show that An → 0, and estimate the rate of convergence by generalizing the Erdős-Turán theorem on the distribution of zeros. As an application, we show t...

The error box of GRB980425 has been observed by XMM-Newton in March 2002, with the aim of measuring the late epoch X-ray emission of the supernova 1998bw and of clarifying its supposed association with the GRB itself. We present here the preliminary results obtained with the EPIC PN camera. Our observations confirm the association between SN 1998bw and GRB980425. The EPIC PN measurement of the ...

يديوتامورلا لصافلما باهتلا ضيرم180 ةساردلا تلمش :جئاتنلا عافترا نأ جئاتنلا ترهظأ .)اًماع 40.49±12.19 رمعلا طسوتم( يف LDL لدعم و )55.1%(لورتسلوكلا لدعم عافترا راشتنا لدعم عافترا ينب ةيئاصحإ ةوق تاذ ةقلاع دوجو نع تفشك .)51.2%( ىلع ةولاعو .)p=0.002( CRP لا هبسن عافترا و لورتسيلوكلا طاشنو يلكلا لورتسلوكلا ينب ةيباجيإ ةقلاع دوجو انظحلا ،كلذ طاقن رخآ ضرم ةكرتشلما اًماع 28 مادختساب اهسايق تم امك ،ضرلما ...

Abstract. The reaction of sea salt (or biomass burning) particles with sulfuric acid and nitric leads to the displacement chloride relative sodium potassium). We have developed a new particle mass spectrometer quantify non-refractory refractory sulfate aerosols (referred as aerosol thermal desorption spectrometer: rTDMS). combination graphite collector carbon dioxide laser enables high temperat...