Accuracy of intraoperative consultation in the evaluation of salivary gland tumors

[No abstract available]sem informação5116sem informaçãosem informaçãoWenig, B.M., (2008) Atlas of Head and Neck Pathology, , 2nd ed. Philadelphia: ElsevierGnepp, D.R., (2009) Diagnostic Surgical Pathology of the Head and Neck, , 2nd ed. Amsterdam: ElsevierMcHugh, J.B., Visscher, D.W., Barnes, E.L., Update on selected salivary gland neoplasms (2009) Arch Pathol Lab Med., 133 (11), pp. 1763-1774Heller, K.S., Attie, J.N., Dubner, S., Accuracy of frozen section in the evaluation of salivary tumors (1993) Am J Surg., 166 (4), pp. 424-427Seethala, R.R., LiVolsi, V.A., Baloch, Z.W., Relative accuracy of fine-needle aspiration and frozen section in the diagnosis of lesions of the parotid gland (2005) Head Neck., 27 (3), pp. 217-223Fonseca, T.C., Eisenberg, A.L.A., Accuracy of intraoperative consultation in lesions of the salivary glands: Analysis of 748 cases (2015) J Bras Patol Med Lab., 51 (1), pp. 52-5

ENHANCEMENT OF THE CONVECTIVE COOLING OF TWO HEATERS IN A RECTANGULAR DUCT BY IMPINGING JETS

A numerical investigation was performed to compare two alternative configurations for the convective air cooling of two heaters flush mounted on the lower horizontal wall of a rectangular duct. One configuration consisted of duct flow with uniform airflow velocity and temperature at the duct inlet and the heaters were located in the flow entrance region. In the other, the cooling was obtained by impinging air jets exiting with uniform velocity and temperature from two square holes on the upper duct wall just above the heaters. The simulations were performed under steady state conditions considering the three dimensional flow region of each configuration, where the conservation equations were solved. The results were presented in the form of the adiabatic Nusselt number and a dimensionless pressure drop for both configurations, in the range of the duct Reynolds number from 500 to 9,000

Enhancement of the convective cooling of two heaters in a rectangular duct by impinging jets

A numerical investigation was performed to compare two alternative configurations for the convective air cooling of two heaters flush mounted on the lower horizontal wall of a rectangular duct. One configuration consisted of duct flow with uniform airflow velocity and temperature at the duct inlet and the heaters were located in the flow entrance region. In the other, the cooling was obtained by impinging air jets exiting with uniform velocity and temperature from two square holes on the upper duct wall just above the heaters. The simulations were performed under steady state conditions considering the three dimensional flow region of each configuration, where the conservation equations were solved. The results were presented in the form of the adiabatic Nusselt number and a dimensionless pressure drop for both configurations, in the range of the duct Reynolds number from 500 to 9,00013148COORDENAÇÃO DE APERFEIÇOAMENTO DE PESSOAL DE NÍVEL SUPERIOR - CAPESNão te

MEAN NUSSELT NUMBER CORRELATION FOR TISE HEATSINK THERMAL DESIGN

This work was developed from a review of the technical literature for the thermal design of parallel plates heat sinks with uniform cross section cooled by airflow with the TISE (Top Inlet Side Exit) configuration. Due to an observed lack of agreement of the literature correlations among themselves and also with the available experimental results, numerical simulations were then performed to evaluate the forced convective heat transfer in the channels of these heat sinks with the TISE configuration. The simulations encompassed a range of heatsink airflow rates, considering distinct channel sizes and also the effect of a partial opening for the airflow entrance at the heat sink top. The obtained numerical results were employed to evaluate the average convective heat transfer coefficient inside the heatsink’s channels, based on the flow mixed mean temperature. A new empirical correlation was then proposed for the average Nusselt number as a function of the airflow Reynolds number and three dimensionless channel geometric parameters. The new correlation was compared with available experimental data

Genomic profile of a squamous cell carcinoma Ex pleomorphic adenoma compared to a head and neck squamous cell carcinoma

[No abstract available]sem informação843393397FAPESP - FUNDAÇÃO DE AMPARO À PESQUISA DO ESTADO DE SÃO PAULO2011/23204-5; 2011/23366-

Nucleolar Organizer Region (nors) In Pseudocarcinomatous Hyperplasia And Squamous Cell Carcinoma Of The Oral Mucosa.

Counts of nucleolar regions (NORs) demonstrated by a silver staining technique in paraffin sections, have been used to distinguish benign from malignant lesions. AgNORs were studied in 24 biopsies from oral cavity (5 cases of normal oral mucosa, 5 of pseudocarcinomatous hyperplasia and 14 of squamous cell carcinoma, subdivided according to degree of differentiation: 5 grade 1, 5 grade 2 and 4 grade 3) to find whether they were helpful in distinguishing pseudocarcinomatous hyperplasia due to chronic parasitic infections from squamous cell carcinoma. Two methods of counting AgNORs were used: (A) a simpler one which counts nucleolar clusters (AgNU) and satellite AgNORs and the other (B) counting all individual AgNORs, including those within AgNUs. In both methods the lowest mean values were observed for grade 3 carcinoma, while the highest belonged to grade 2 carcinoma. The simpler method (A) was the most useful because AgNU counts showed significant difference when pseudocarcinomatous hyperplasia was compared with grade 1 and 2 carcinomas, which are the most difficult to discriminate from it. However the overlapping of values render the technique of limited use in individual cases.113169369