1,161 research outputs found
Liver Resections for Metastases from Intraabdominal Leiomyosarcoma
This paper discusses liver resection for intraabdominal
leiomyosarcoma metastases as a therapy for
carefully selected patients. Of the 83 hepatectomies
performed from 1992 to 1996, five were resections for
liver metastases due to intraabdominal leiomyosarcoma,
in 3 patients. The surgical indication was single
liver metastases, without any evidence of extrahepatic
disease. No mortality occurred during surgery and the
longest survival was 38 months. We concluded that
liver resection for leiomyosarcoma metastases can be
performed, allowing a long term survival in an
occasional patient
Análises morfométricas entre apis mellifera da mesorregiao do sertao paraibano
Objetivou-se, com esse trabalho, caracterizar as populações de Apis mellifera da mesorregião do Sertão paraibano, comparando os indivíduos morfometricamente. As medidas tomadas foram: comprimento da asa anterior (CAA) e largura da asa anterior (LAA), ângulos B4, E9, G18, J16, K19, N23, O26 e distância b (Db); comprimento da asa posterior (CAP) e largura da asa posterior (LAP), distância L2 (DL2), L5 (DL5) e ângulo W3, comprimento do fêmur (CF), comprimento da tíbia (CT), comprimento do tarso (CTS) e largura do tarso (LTS) e comprimento da probóscide (CP). Para a comparação das diferentes variáveis estudadas utilizou-se a análise de variância, o teste de Tukey, análise canônica e o teste de Tocher a 5% de significância. Para as medidas realizadas em cada amostra utilizou-se um equipamento de análise de imagens, Programa Image Pro Plus 4.0. As variáveis CTS e LTS, ângulos G18 e K19 e DL2 diferiram significativamente (p<0,05) entre as localidades estudadas de acordo com o teste de Tukey. A análise canônica mostrou a existência de um agrupamento com base nas características morfológicas entre duas das localidades estudadas apesar da distância geográfica. Concluiu-se que existem dois grupos distintos morfometricamente para a microrregião estudada e que há um processo adaptativo das abelhas, quanto às medidas morfométricas, para as diferentes regiões geomorfológicas
Exclusion of Class III malocclusion candidate loci in Brazilian families
The role played by genetic components in the etiology of the Class III phenotype, a class of dental malocclusion, is not yet understood. Regions that may be related to the development of Class III malocclusion have been suggested previously. The aim of this study was to search for genetic linkage with 6 microsatellite markers (D1S234, D4S3038, D6S1689, D7S503, D10S1483, and D19S566), near previously proposed candidate regions for Class III. We performed a two-point parametric linkage analysis for 42 affected individuals from 10 Brazilian families with a positive Class III malocclusion segregation. Analysis of our data indicated that there was no evidence for linkage of any of the 6 microsatellite markers to a Class III locus at = zero, with data supporting exclusion for 5 of the 6 markers evaluated. The present work reinforces that Class III is likely to demonstrate locus heterogeneity, and there is a dependency of the genetic background of the population in linkage studies
Trial-based cost-effectiveness analysis comparing surgical and endoscopic drainage in patients with obstructive chronic pancreatitis
Objective: Published evidence indicates that surgical drainage of the pancreatic duct was more effective than endoscopic drainage for patients with chronic pancreatitis. This analysis assessed the cost-effectiveness of surgical versus endoscopic drainage in obstructive chronic pancreatitis. Design: This trial-based cost-utility analysis (ISRCTN04572410) was conducted from a UK National Health Service (NHS) perspective and during a 79-month time horizon. During the trial the details of the diagnostic and therapeutic procedures, and pancreatic insufficiency were collected. The resource use was varied in the sensitivity analysis based on a review of the literature. The health outcome was the Quality-Adjusted Life Year (QALY), generated using EQ-5D data collected during the trial. There were no pancreas-related deaths in the trial. All-cause mortality from the trial was incorporated into the QALY estimates in the sensitivity analysis. Setting: Hospital. Participants: Patients with obstructive chronic pancreatitis. Primary and secondary outcome measures: Costs, QALYs and cost-effectiveness. Results: The result of the base-case analysis was that surgical drainage dominated endoscopic drainage, being both more effective and less costly. The sensitivity analysis varied mortality and resource use and showed that the surgical option remained dominant in all scenarios. The probability of cost-effectiveness for surgical drainage was 100% for the base case and 82% in the assessed most conservative case scenario. Conclusions: In obstructive chronic pancreatitis, surgical drainage is highly cost-effective compared with endoscopic drainage from a UK NHS perspective
On the inner Double-Resonance Raman scattering process in bilayer graphene
The dispersion of phonons and the electronic structure of graphene systems
can be obtained experimentally from the double-resonance (DR) Raman features by
varying the excitation laser energy. In a previous resonance Raman
investigation of graphene, the electronic structure was analyzed in the
framework of the Slonczewski-Weiss-McClure (SWM) model, considering the outer
DR process. In this work we analyze the data considering the inner DR process,
and obtain SWM parameters that are in better agreement with those obtained from
other experimental techniques. This result possibly shows that there is still a
fundamental open question concerning the double resonance process in graphene
systems.Comment: 5 pages, 3 figure
Foreword: Control and Conservation of Lampreys Beyond 2020 – Proceedings from the 3rd Sea Lamprey International Symposium (SLIS III)
This special issue summarizes outcomes from the 3rd Sea Lamprey International Symposium (SLIS III; Fig. 1) held 28 July – 2 August 2019 at Wayne State University in Detroit, Michigan, U.S.A. The first two symposia (SLIS I and SLIS II) were held 30 July – 8 August 1979 at Northern Michigan University in Marquette, Michigan and 14–18 August 2000 at Lake Superior State University in Sault Ste. Marie, Michigan, respectively. The published volumes from these symposia in 1980 (Canadian Journal of Fisheries and Aquatic Sciences, Volume 37, Issue 11) and 2003 (Journal of Great Lakes Research Volume 29, Supplement 1) have been invaluable references for the broader scientific community and for management agencies around the Laurentian Great Lakes; cited over 4800 and 3300 times, respectively. SLIS III was attended by over 150 scientists, biologists, resource managers, graduate students, and Commission advisors, including participants from Australia, Canada, China, Japan, New Zealand, Portugal, Spain, the United Kingdom, and the United States (Fig. 2). Similar to SLIS I and SLIS II, the goals of SLIS III were to provide a forum to (i) update and publish information on sea lamprey control and research on lampreys since SLIS II, (ii) exchange knowledge and ideas to bring practitioners to a common plateau of understanding, and (iii) develop innovative initiatives and stimulate new vigor in efforts to control sea lamprey in the Great Lakes and to conserve lampreys in their native ranges. The emphasis on conservation of lampreys is unique to SLIS III and reflects a heightened international recognition that scientific and management advances supporting sea lamprey control in the Great Lakes can benefit the global effort to conserve native lampreys and vice versa
Genetically engineered silk-based composite biomaterials functionalized with fibronectin type-II that promote cell adhesion
[Excerpt] Recombinant protein-based polymers (rPBPs) are an emerging class of biopolymers inspired by Nature and produced by synthetic protein biotechnology approaches. Due to their exceptional physical-chemical and biological characteristics, as well as their ability to be customized for specific applications, rPBPs have been explored for the development of advanced biomaterials [1]. Within rPBPs, silk-like polymers (SLP) are being utilized in a range of studies in materials science [2]. [...]This work was supported by FCT Funded Project “Chimera” (PTDC/EBB-EBI/109093/2008),
by FCT/MEC through Portuguese funds (PIDDAC) – PEst-OE/BIA/UI4050/2014, by the
strategic programme UID/BIA/04050/2013 (POCI-01-0145-FEDER-007569) funded by
national funds through the FCT I.P. and by the ERDF through COMPETE2020 - Programa
Operacional Competitividade e Internacionalização (POCI). TC is thankful to the FCT for its
support through Investigador FCT 2015. ARibeiro thanks FCT for the SFRH/BPD/98388/2013
grant. RMachado and AdaCosta acknowledge FCT for SFRH-BPD/86470/2012 and
SFRH/BD/75882/2011 grants, respectively
Spectral method for the time-dependent Gross-Pitaevskii equation with a harmonic trap
We study the numerical resolution of the time-dependent Gross-Pitaevskii
equation, a non-linear Schroedinger equation used to simulate the dynamics of
Bose-Einstein condensates. Considering condensates trapped in harmonic
potentials, we present an efficient algorithm by making use of a spectral
Galerkin method, using a basis set of harmonic oscillator functions, and the
Gauss-Hermite quadrature. We apply this algorithm to the simulation of
condensate breathing and scissors modes.Comment: 23 pages, 5 figure
New Results for the Correlation Functions of the Ising Model and the Transverse Ising Chain
In this paper we show how an infinite system of coupled Toda-type nonlinear
differential equations derived by one of us can be used efficiently to
calculate the time-dependent pair-correlations in the Ising chain in a
transverse field. The results are seen to match extremely well long large-time
asymptotic expansions newly derived here. For our initial conditions we use new
long asymptotic expansions for the equal-time pair correlation functions of the
transverse Ising chain, extending an old result of T.T. Wu for the 2d Ising
model. Using this one can also study the equal-time wavevector-dependent
correlation function of the quantum chain, a.k.a. the q-dependent diagonal
susceptibility in the 2d Ising model, in great detail with very little
computational effort.Comment: LaTeX 2e, 31 pages, 8 figures (16 eps files). vs2: Two references
added and minor changes of style. vs3: Corrections made and reference adde
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