ABSTRACT Background: Arterial anatomy is the main limiting factor for standard endovascular aortic (EVAR) approach. We present our experience for endovascular repair of complex aortic aneurysms. Material and Methods: This is a retrospective observational study in patients with complex aneurysms (juxta/pararenal and thoracoabdominal) treated consecutively with: fenestrated (FEVAR), branched (BEVAR), EndoAnchors (ESAR), or chimney (ChEVAR) stents. The decision of the technique was determined based on the arterial anatomy. Results: The last 50 procedures were evaluated (6 women; mean age 71.3 years; diameter 69.6 mm; and 3 patients with complicated aneurysms), among whom 22 received FEVAR (2.8 fenestrated stents/patient), 11 BEVAR, 11 ESAR and 6 ChEVAR (1.8 chimney stents/patient). Technical success rate was 100% (absence of type I or III endoleak with adequate patency of the visceral vessels). Three patients died within the first 30 days (6%). During follow-up, 5 patients presented with renal artery occlusion, treated successfully in 4 cases. Four patients developed type IA endoleak (3 secondary ESAR and one ChEVAR), one patient IC endoleak and almost a quarter of cases type IIIB endoleak (22%, 3 out of 11 patients receiving ESAR, none of the industrial FEVAR group). In survival analysis, overall survival analysis was 88.6% at one year, and 86.5% of cases were free from reoperation. Conclusions: This is the first publication in our setting that shows a global approach to the patient with complex aortic aneurysm, according to the anatomical characteristics. These technologies already play a primary role in the treatment of these patients.

RESUMEN Introducción: la anatomía arterial es la principal limitante para el abordaje aórtico endovascular estándar. Presentamos nuestra experiencia para la reparación endovascular de aneurismas aórticos complejos. Material y métodos: estudio observacional retrospectivo en pacientes con aneurismas complejos (yuxta/pararrenales y toracoabdominales) tratados en forma consecutiva mediante: endoprótesis fenestradas (FEVAR), ramificadas (BEVAR), con EndoAnchors (ESAR), o en chimenea (ChEVAR). La decisión de la técnica fue determinada con base en la anatomía arterial. Resultados: se evaluaron los últimos 50 procedimientos (6 mujeres; edad promedio 71,3 años; diámetro 69,6mm; 3 pacientes con aneurismas complicados), de los cuales 22 recibieron FEVAR (2,8 fenestraciones / paciente), 11 BEVAR, 11 ESAR y 6 ChEVAR (1,8 chimeneas /paciente). La tasa de éxito técnico fue del 100% (ausencia de endoleak I o III con permeabilidad adecuada de los vasos viscerales). A 30 días 3 pacientes fallecieron (6%). Durante el seguimiento, 5 pacientes presentaron oclusión de la arteria renal, repermeabilizada en 4. Cuatro pacientes desarrollaron un endoleak tipo IA (3 ESAR secundarios y un ChEVAR), un paciente un endoleak IC y un cuarto uno IIIB (22%, 3 de los 11 ESAR, ninguno de los FEVAR industriales). En el análisis de supervivencia, la supervivencia global fue del 88,6% al año, y libre de reoperación del 86,5%. Conclusiones: se trata de la primera publicación en nuestro medio que muestra un enfoque global del paciente con un aneurisma de aorta complejo, de acuerdo con sus características anatómicas. Estas tecnologías ya desempeñan un papel primario en el tratamiento de estos pacientes.

Abstract Graphene oxide (GO) is one of the main precursors for the production of graphene and other graphene-based materials. We report a simple, safe, and fast synthesis method to obtain graphene oxide as a functional material for battery-type electrodes. Washing and lyophilization processes were performed to evaluate their effects on exfoliation and removal of functional groups from graphene sheets. Sample GO1 consisted of a 10-layer stack of oxidized graphene, while sample GO2 had 8 stacked layers. The difference between them was an extra washing and lyophilization process in the GO2 sample. The electrochemical performance of graphene oxide-based electrodes, classified as battery-type, indicated an improved specific capacity of 10.15 C.g-1 for GO1 against 4.55 C.g-1 for GO2 at a specific current of 0.5 A.g-1. This superior battery-type behavior of the GO1 electrode, also confirmed by electrochemical impedance spectroscopy, was most likely due to a higher degree of oxygenated groups on its surface, as shown by energy dispersive spectroscopy (EDS) and Fourier transform infrared spectroscopy (FTIR) studies.

The effects of small amounts (up to 5 wt.%) of scandia- and ceria-stabilized zirconia on the electrical conductivity, and the elastic modulus and hardness of yttria-stabilized zirconia were investigated by impedance spectroscopy and nanoindentation tests, respectively. The main purpose of this work was to obtain solid electrolyte compounds with improved properties compared to those of the base materials. Solid electrolytes compounds were prepared by solid-state reaction synthesis with sintering at 1450 ºC for 4 h. All prepared compounds exhibit a cubic fluorite-type structure. The microstructure of the compounds consists of polygonal grains with low (< 2%) porosity. The mean grain size estimated by the intercept method was 5 ± 1 μm. The electrical conductivity of the compound ceramics is lower than that of the base material. Addition of scandia-stabilized zirconia is found to exert a beneficial effect on the matrix by increasing the elastic modulus, achieving 221 MPa for 5 wt.% of the additive.

RESUMO O presente trabalho analisa e desenvolve um método para resolver equações diferenciais fracionárias utilizando o Método de Monte Carlo. Uma simulação numérica é realizada para algumas equações diferenciais, comparando os resultados com o que existe na literatura matemática. A linguagem Python é usada para criar modelos computacionais.

ABSTRACT This article analyzes and develops a method to solve fractional ordinary differential equations using the Monte Carlo Method. A numerical simulation is performed for some differential equations, comparing the results with what exists in the mathematical literature. The Python language is used to create computational models.

ABSTRACT A Helicopter rotor undergoes unsteady aerodynamic loads ruled by the aeroelastic coupling between the elastic blades and the dynamic wake induced by rotary wings. Modeling the dynamic interaction between the structural and aerodynamic fields is a key point to understand aeroelastic phenomena associated with rotor stability, flow induced vibration and noise generation, among others. In this study, we address the Generalized Dynamic Wake Model, which describes the inflow velocity field at the rotor disk as a superposition of a finite number of induced flow states. It is a mature model that has been validated based on experimental data and numerically investigated from an eigenvalue problem formulation, whose eigenvalues and eigenvectors provide a deeper insight on the dynamic wake behavior. The paper extends the results presented in the literature to date in order to support physical interpretation of inflow states drawn from the finite-state wake model for flight conditions varying from hover to edgewise flight. The discussion of the wake model mathematical formulation is also oriented towards practical engineering applications to fill a gap in the literature.

ABSTRACT Imaging technology plays a key guiding role in the endovascular treatment of aortic aneurysms, especially in the complex thoracoabdominal aorta. The operating rooms combine high quality imaging with a sterile and functional environment, allowing for better outcomes, a reduction of the contrast agent to be used and of patients’ and operators’ exposure to radiation. The aim of this presentation is to describe the current use of imaging technology, combining intraoperative cone beam computed tomography (CBCT) and computed tomography angiography (CTA), image “fusion” and intravascular ultrasound, to guide the procedures and improve the intraoperative success rate, and to reduce the need for reinterventions. Furthermore, a procedure to create custom 3D templates with high definition images of the patient’s arterial anatomy is described, which serve as specific guides for making fenestrated stent-grafts in the operating room. These custom fenestration templates could increase the number of patients with complex aneurysms treated with a minimally invasive approach.

RESUMEN La tecnología en imágenes desempeña un papel fundamental como guía en el tratamiento endovascular del aneurisma de aorta, especialmente en la aorta compleja toracoabdominal. Las salas quirúrgicas combinan imágenes de alta calidad con un entorno estéril y funcional, lo que permite, además de mejores resultados, una reducción del contraste a utilizar y la exposición a la radiación de pacientes y operadores. Esta presentación tiene como objetivo describir el uso actual de dicha tecnología, combinando angiotomografía y tomografía computarizada de haz cónico intraoperatoria, la “fusión”de imágenes y la ecografía intravascular, para guiar procedimientos y así mejorar la tasa de éxito intraoperatorio y reducir la necesidad de reintervenciones. Por otro lado, se describe un procedimiento para crear plantillas personalizadas 3D con las imágenes de alta definición de la anatomía arterial del paciente, que sirven como guías específicas para confeccionar en quirófano endoprótesis fenestradas. Estas plantillas de fenestración personalizadas podrían ampliar el número de pacientes con aneurismas complejos tratados en forma mínimamente invasiva.

This study was motivated by the high costs incurred by an energy company for repairable spare parts for faulty mission-critical items, particularly with those that operate until failure. The objective of this paper is to develop and apply a method for repairable spare part inventory management of run-to-failure equipment. To achieve a robust method that incorporates the data collected from previous failures, such as environmental factors and operating conditions, we propose an optimisation approach based on an accelerated failure time model. Accelerated failure time is used as a reliability regression model with covariates to describe different operational conditions. An algorithm is also developed to consider the repairable nature of the equipment, predicting the number of spare parts based on the expected number of failures in the period and the equipment repair cycle. The proposed method is applied using data from three different power units of electrical submersible pumps, a mission-critical item in oil production. The results show an average reduction of 60.6 per cent in the required number of spare parts, considering an average fill rate of 95.33 per cent. This reduction implies an estimated annual savings of around US$664,720 in inventory costs, considering the analysed units.

Die hoë kostes wat energiemaatskappye op die hals haal vir spaar onderdele vir kritiese items dien as motivering vir hierdie studie. Die doel is om 'n metode wat die inventarisbestuur van herstelbare spaar onderdele te ontwikkel en toe te pas vir bedryf-tot-faling toerusting. Om 'n robuuste metode wat vorige falingsdata inkorporeer te ontwikkel word 'n optimisering benadering wat op 'n versnelde falingstyd model gebaseer is gebruik. Versnelde falingstyd word gebruik as 'n betroubaarheid regressie model met kovariate om die verskillende operasionele toestande te beskryf. 'n Algoritme is ook ontwikkel om die herstelbaarheid van die toerusting in ag te neem en dit voorspel die aantal spaar onderdele op grond van die verwagte aantal falings in die periode en die toerusting herstelsiklus. Die voorgetelde metode is toegepas op data van drie verskillende aandrywingseenhede van elektriese dompelpompe. Die resultate toon dat 'n gemiddelde vermindering van 60.6 persent in die aantal spaar onderdele wanneer 'n gemiddelde vulsyfer van 95.33 persent oorweeg is. Die vermindering bewerkstellig 'n jaarlikse besparing van ongeveer US$664,720 in inventaris onkostes vir die oorweegde pompeenhede.

Resumen Estamos interesados en una ecuación elíptica no homogénea con potencial aleatorio y no linealidad supercrítica. Obtenemos la existencia de solución casi seguramente para una clase de potenciales que incluye continuos y discretos. Además, proporcionamos una ley de grandes números para las soluciones obtenidas por conjuntos independientes y estimamos el valor esperado para sus normas L∞.

Abstract We are concerned with a nonhomogeneous elliptic equation with random potential and supercritical nonlinearity. Existence of solution is obtained almost surely for a class of potentials that includes continuum and discrete ones. Also, we provide a law of larger numbers for the obtained solutions by independent ensembles and estimate the expected value for their L∞-norms. MSC2010: 47B80, 60H25, 35J60, 35R60, 82B44, 47H10.

Resumo O uso de OGM que expressam toxina Bt na produção de soja tem aumentado significativamente nos últimos anos no Brasil e são utilizados para conter os danos causados pelos lepidópteros pragas. Neste estudo comparamos a riqueza e a abundância de Noctuoides (Noctuoidea) associados à soja Bt e não-Bt. Determinamos as variações temporais em função da fenologia e correlacionamos às variações populacionais das espécies mais comuns com variáveis meteorológicas. A pesquisa foi conduzida na área experimental da Embrapa Cerrados. O método de coleta utilizado foi diferenciado sendo supressivo e absoluto. Um total de 13 espécies foram coletadas, das quais oito ocorreram em soja Bt. Os taxa mais representativos foram Chrysodeixis includens, Anticarsia gemmatalis e Spodoptera spp. O número de larvas pertencentes às espécies alvo da tecnologia Bt foram 10 vezes menores na soja Bt do que em soja não-Bt . Utetheisa ornatrix e Elaphria deltoides foram registradas na soja pela primeira vez, observando-se larvas de ambas espécies na soja não-Bt e as de U. ornatrix também na soja Bt. Somente as larvas de A. gemmatalis se correlacionaram (p <0,05) negativamente com a precipitação. Este estudo forneceu informações em campo sobre a abundância e riqueza de espécies na soja não- Bt, associada aos efeitos da soja Bt. A importância do monitoramento das lagartas é substancial, a fim de tomar a melhor decisão de controle, considerando-se os diferentes níveis de infestação entre cultivares como critério.

Abstract The use of GMO expressing Bt toxin in soybean production has increased significantly in the last years in Brazil in order to manage the damage caused by lepidopteran pests. In this study, we compared the richness and abundance of owlet moths (Noctuoidea) associated with Bt and non-Bt soybean. We determined the temporal variations as a function of phenology, and correlated the population variations of the most common species with meteorological variables. The research was conducted at the experimental area of Embrapa Cerrados. The collection method used was differentiated being suppressive and absolute. A total of 13 species were collected, of which eight occurred on Bt soybeans. The most representative taxa were Chrysodeixis includens (72.87%), Anticarsia gemmatalis (18.17%) and Spodoptera spp (5.22%). The number of larvae belonging to species targeted by the Bt technology was 10 times lower on Bt than on non-Bt soybeans. Utetheisa ornatrix and Elaphria deltoides were recorded on soybean for the first time, observing larvae of both species in non-Bt soybean and those of U. ornatrix also in Bt soybean. Only A. gemmatalis larvae correlated (p <0.05) negatively with precipitation. This study provided field information on the abundance and species richness of owlet moths on non-Bt soybeans, associated with the effects of Bt soybean. When considering the different levels of infestation between cultivars as a criterion, larvae monitoring is of substantial importance in order to develop the lost control program.

Abstract After two centuries of the discovery, we now know that there are several types of bauxites, in which mineralogy points to the most appropriate application. In the non-metallurgical industry, bauxites with refractory grades have been applied as raw materials in the production of high-alumina refractories for both shaped and unshaped. The increase in the cost of other sources of high-alumina raw materials has encouraged the refractory producers to find a more cost-effective substitute, such as refractory-grade calcined bauxites (RGB). Nowadays, concerns rise regarding the availability of RGB due to the continuous restrictions taking place in China, which has a 95% market share. This work presents a new RGB of high-alumina content (~85%) from a Brazilian source in which process enabled a technology with high refractoriness.

ABSTRACT Perfectionism towards physical appearance considers to be concern about imperfection and hope for perfection in appearance. The aim of this research was to validate the Brazilian Portuguese version of Physical Appearance Perfectionism Scale in a sample of exercise resistance practitioners. The non-probabilistic sample consisted of 534 men and women aged 18 to 39 years. Confirmatory factorial analysis was used to generate psychometric evidence for the reference sample. The two-factor structural model achieved satisfactory adjustment indices, both in the general sample and in the sample by sex. Regarding convergent validity, almost all values of factorial loads were above acceptable, although the average variance extracted (AVE) was adequate only in the male scale. Regarding the discriminant validity, all the AVE values were above the value of the shared variance in the general, female and male models, showing that there are some differences between the two latent variables. Construct reliability was established on both the general scale and the female and male scale. This instrument achieved adequate psychometric evidence for the Brazilian version of Physical Appearance Perfectionism Scale, which allows recommending its use in Brazil.

RESUMO O perfeccionismo direcionado à aparência física considera haver preocupação com a imperfeição e esperança para a perfeição em relação à aparência. O objetivo dessa pesquisa foi validara versão em português Brasileiro da Physical Appearance Perfectionism Scale em uma amostra de praticantes de exercícios resistidos. A amostra não-probabilística foi constituída por 534 homens e mulheres com idades entre 18 a 39 anos. Foi utilizada análise fatorial confirmatória, para gerar evidências psicométricas para a amostra de referencia. O modelo estrutural bifatorial alcançou índices de ajuste satisfatório, tanto na amostra geral, quanto na amostra por sexo. Em relação à validade convergente, quase todos os valores das cargas fatoriais estavam acima do aceitável, mas a variância média extraída foi adequada apenas na escala masculina. Quanto à validade discriminante, todos os valores da AVE estiveram acima do valor da variância compartilhada nos modelos geral, feminino e masculino, demonstrando haver alguma diferença as duas variáveis latentes. A confiabilidade de constructo foi estabelecida tanto na escala geral, quanto na escala feminina e masculina. O presente instrumento obteve evidências psicométricas adequadas para a versão brasileira da Physical Appearance Perfectionism Scale, o que permite recomendar seu uso no Brasil.

RESUMEN El perfeccionismo dirigido a la apariencia física considera que hay preocupación por La imperfección y la esperanza para la perfección en relación a la apariencia. El objetivo de esta investigación fue validar la versión en portugués brasileño de la Physical Appearance Perfectionism Scale en una muestra de practicantes de ejercicios de resistencia. La muestra no probabilística consistió en 534 hombres y mujeres de entre 18 y 39 años. Se utilizó un análisis factorial confirmatorio, para generar evidencias psicométricas para la muestra de referencia. El modelo estructural bifatorial alcanzó índices de ajuste satisfactorio, tanto en la muestra general, como en la muestra por sexo. En cuanto la validez convergente, case todos los valores de las cargas factorial fueron superiores a los aceptables, aunque la varianza media extraída (AVE) fue adecuada solo en la escala masculina. En cuanto a la validez discriminante, todos los valores AVE estaban por encima del valor de la varianza compartida en los modelos general, femenino y masculino, lo que demuestra que existen algunas diferencias entre las dos variables latentes. La fiabilidad del constructo se estableció tanto en la escala general como en la escala femenina y masculina. Este instrumento obtuvo evidencia psicométrica adecuada para la versión brasileña de Physical Appearance Perfectionism Scale, que permite recomendar su uso en Brasil.

The effect of a short-term creatine supplementation on hindlimb suspension (HS)-induced muscle atrophy was investigated. Creatine monohydrate (5 g/kg b.w. per day) or placebo, divided in 2 daily doses, was given by oral gavage for 5 days. Rats were maintained in HS with dietary supplementation concomitantly for 5 days. Body weight, soleus and EDL muscle masses, and cross-sectional areas (CSA) of the muscle fibers were measured. Signaling pathways associated with skeletal muscle mass regulation (FST, MSTN, FAK, IGF-1, MGF, Akt, mTOR, atrogin-1, and MuRF1 expressions, and Akt, S6, GSK3B, and 4EBP1 proteins) were evaluated in the muscles. Soleus muscle exhibited more atrophy than the EDL muscle due to HS. Creatine supplementation attenuated the decrease of wet weight and increased p-4EBP1 protein in the EDL muscle of HS rats. Also, creatine increased mTOR and atrogin-1 expressions in the same muscle and condition. In the absence of HS, creatine supplementation increased FAK and decreased MGF expressions in the EDL muscle. Creatine attenuated the increase in FST expression due to HS in the soleus muscle. MuRF1 expression increased in the soleus muscle due to creatine supplementation in HS animals whereas atrogin-1 expression increased still further in this group compared with untreated HS rats. In conclusion, short-term creatine supplementation changed protein metabolism signaling in soleus and EDL muscles. However, creatine supplementation only slightly attenuated the mass loss of both muscles and did not prevent the CSA reduction and muscle strength decrease induced by HS for 5 days.

Resumo A ostra-do-mangue Crassostrea rhizophorae é um recurso estuarino explorado por comunidades ribeirinhas do Nordeste do Brasil. Apesar de sua importância socioeconômica, estudos sobre o estado de saúde deste bivalve são escassos na região. O objetivo deste estudo foi investigar a presença do protozoário Perkinsus sp. em C. rhizophorae coletada em agosto e setembro de 2011, em três estuários da região setentrional do Nordeste brasileiro: Jaguaribe (Ceará), Camurupim (Piauí) e Carnaubeiras (Maranhão) (n = 150 espécimes/local). As amostras foram submetidas ao meio líquido de tioglicolato de Ray (RFTM), PCR e ensaios histológicos. A análise em RFTM revelou hipnósporos esféricos azuis ou preto-azulados do gênero Perkinsus em 50 espécimes (Jaguaribe= 17,3%, Camurupim= 5,3%, Carnaubeiras= 10,6%). A intensidade de infecção variou de muito leve (1-10 células por lâmina) a severa (mais de 40 células em cada um dos 10 campos da lâmina) para o Rio Jaguaribe; muito leve para o Rio Camurupim e muito leve a moderada (pelo menos 40 células observadas, em cada um dos 10 campos da lâmina) para o Rio Carnaubeiras. Quando submetidos à análise confirmatória por PCR, foram confirmados 6 casos (Jaguaribe= 3, Camurupim= 1, Carnaubeiras= 2). A histologia confirmou 21 casos de infecção em espécimes dos três estuários. Embora os coletores locais não tenham relatado nenhuma mortalidade em populações de ostras que pudesse ser atribuída à infecção por Perkinsus, é aconselhável um monitoramento sobre o estado de saúde de populações de ostras da região.

Abstract The mangrove oyster Crassostrea rhizophorae is an estuarine resource exploited by riverside communities in Northeast Brazil. Despite its socioeconomic importance, studies on the health status of this bivalve are scanty in this region. The purpose of the present study was to investigate the presence of the protozoan Perkinsus sp. in C. rhizophorae collected in August and September 2011 in three estuaries of the septentrional Northeast, Brazil: Jaguaribe (Ceará), Camurupim (Piauí) and Carnaubeiras (Maranhão) (n= 150 specimens/site). The samples were submitted to Ray’s fluid thioglycollate medium (RFTM), PCR and histology assays. The RFTM assay revealed spherical, blue or bluish-black hypnospores of the genus Perkinsus in 50 specimens (Jaguaribe= 17.3%, Camurupim= 5.3%, Carnaubeiras= 10.6%). The intensity of the infection ranged from very light (1-10 cells per slide) to severe (more than 40 cells in each of 10 fields of the slide) for Jaguaribe; very light for Camurupim and very light to moderate (at least 40 cells observed in each of 10 fields of the slide) for Carnaubeiras. When submitted to confirmatory PCR analysis, 6 cases were confirmed (Jaguaribe=3, Camurupim=1, Carnaubeiras=2). The histology confirmed 21 cases of infection in specimens from the three estuaries. Although local collectors have reported no mortality in oyster populations that might be attributed to infection by Perkinsus, health surveillance of oyster populations in the septentrional region of Northeast Brazil is advisable.

RESUMOObjetivou-se com o presente estudo avaliar os danos causados em plantas de eucalipto expostas à deriva de glyphosate em diferentes porções da copa. A simulação de deriva ocorreu por meio da aplicação de 1.080 g ha-1 de glyphosate em cinco porções da copa (0, 25, 50, 75 e 100% dos ramos basais), em quatro áreas de cultivo: áreas I e II, plantas com 0,91 e 2,98 m e altura da copa exposta à deriva de 0,30 e 1,0 m, respectivamente; e nas áreas III e IV ambos os cultivos encontravam-se com 8,15 m de altura, variando a altura de exposição à deriva de 2,0 e 2,5 m, respectivamente. Aos 30 e 480 dias após a aplicação (DAA), foi avaliada a taxa de sobrevivência, e aos 300 e 480 DAA, determinou-se o diâmetro à altura do peito (DAP), altura das plantas, volume de madeira e os seus respectivos incrementos. Já o incremento médio anual (IMA) foi determinado aos 480 DAA. Na área I, em que as plantas se encontravam com 0,91 m de altura, observou-se, no tratamento com 100% dos ramos basais expostos à deriva, redução no estande de plantas na ordem de 18,75 e 38,19% aos 30 e 480 DAA, respectivamente. Nas áreas I e II constataram-se reduções no crescimento de planta em altura e DAP, no volume de madeira e no IMA, à medida que houve aumento da porção da copa exposta à deriva de glyphosate. Todavia, nas áreas III e IV, em que as plantas se encontravam com 8,15 m de altura, não se verificou alterações nas características avaliadas, independentemente da porção da copa exposta à deriva do glyphosate.

ABSTRACTWith the present study we aim to assess the damage caused to Eucalyptus plants exposed to glyphosate drift in different canopy portions. The drift simulation was carried out through application of 1,080 g ha-1 of glyphosate in five canopy portions (0, 25, 50, 75 and 100% of the low branches), in four areas of cultivation. Areas I and II, plants with 0.91 and 2.98 m, and height of canopy drift exposition of 0.30 and 1.0 m, respectively. In areas III and IV both cultivations were 8.15 m high, varying the height of drift exposition between 2.0 and 2.5 m, respectively. At 30 and 480 days after application (DAA), the survival rate was assessed, and at 300 and 480 DAA diameter at breast height (DBH), height, volume and their respective increment were determined. The medium annual increment (MAI) was determined at 480 DAA. Area I, in which the plants were 0.91 m high, we observed that treatment with 100% of the low branches exposed to drift led to stand reduction of the plants around 18.75 and 38.19% at 30 and 480 DAA, respectively. Areas I and II showed reduction in plant growth in height and DBH, wood volume and MAI, to the extent that there was an increase in the portion of canopy exposed to glyphosate drift. However, in areas III and IV, in which 8.15 m height plants were found, no changes were verified for the evaluated characteristics, regardless of the portion of canopy exposed to glyphosate drift.

Introduction: Endovascular repair of aortic aneurysm emerges as a less invasive option for patients with high operative risk, constituting a feasible and safe treatment due to technical advances. For this reason, our institution considers endovascular treatment as the "first line therapy" in patients with very high operative risk, as those with ruptured abdominal aortic aneurysm. Objective: The goal of this study is to report the experience with our surgical treatment protocol of patients with ruptured abdominal aortic aneurysm. Methods: Seventeen patients were treated based on the protocol "endovascular approach first". The population was classified according to systolic blood pressure (SBP) at admission in: hemodynamically stable (SBP = 80 mm Hg) or hemodynamically unstable (SBP < 80 mm Hg during > 10 minutes). The outcomes included mortality at 30 days and during follow-up and complications after the procedure. The statistical analysis was performed using Fisher's test. Results: Mortality at 30 days was 23.5%. Technical success was achieved in 94.1% of patients. Despite both groups had similar comorbidities, mortality in stable patients, operated on under local anesthesia, was 7.7% (p < 0.02). Conclusion: Endovascular treatment of ruptured abdominal aortic aneurysm, following a strict clinical and surgical treatment, is feasible and safe, particularly in stable patients under local anesthesia.

Introducción: El tratamiento endovascular del aneurisma de la aorta surge esencialmente como una alternativa menos invasiva para pacientes de riesgo quirúrgico alto, que con los avances tecnológicos se ha hecho factible y segura. Ello ha llevado a nuestra Institución a brindar el abordaje endovascular como "primera opción de tratamiento" en pacientes de riesgo quirúrgico más alto aún, como son los pacientes con aneurismas de la aorta abdominal rotos. Objetivo: Presentar la experiencia con nuestro protocolo quirúrgico de tratamiento del paciente con aneurisma de la aorta abdominal roto. Material y métodos: Diecisiete pacientes fueron tratados bajo el protocolo de "abordaje endovascular primero". La población se clasificó en función de la presión arterial sistólica (PAS) de ingreso: hemodinámicamente estables (PAS = 80 mm Hg) e inestables (PAS < 80 mm Hg durante > 10 minutos). Los resultados incluyeron la mortalidad a los 30 días y en el seguimiento y las complicaciones posprocedimiento. El análisis estadístico se realizó con la prueba de Fisher. Resultados: La mortalidad a los 30 días fue del 23,5%. El éxito técnico se logró en el 94,1%. Si bien ambos grupos tuvieron comorbilidades similares, los pacientes estables, operados bajo anestesia local, presentaron una tasa de mortalidad del 7,7% (p < 0,02). Conclusión: El tratamiento endovascular del aneurisma de la aorta abdominal roto, siguiendo un manejo clínico-quirúrgico estricto, es factible y seguro, especialmente en pacientes estables bajo anestesia local.