Miracle-dz/UniFAR-FTUs huggingface dataset:
Superior Sagittal Sinus Thrombosis in the Presence of Idiopathic Bilateral Internal Jugular Vein Stenosis

Cerebral venous outflow obstruction and anomalies in cerebral venous circulation predispose to dural sinus thrombosis. This case report illustrates the magnetic resonance and angiographic findings in a patient who had superior sagittal sinus thrombosis secondary to idiopathic bilateral internal jugular vein stenosis, a previously unrecognized entity. The findings suggest that bilateral stenosis of the internal jugular veins at their junction with the innominate veins causes obstruction to cerebral venous outflow leading to dural sinus thrombosis.
Effective output voltage quality control under nonlinear loads in islanded microgrid

A nonlinear load generally causes harmonic distortion, and harmfully affects the performance of other loads or other distributed generation (DG) sources connected to the point of common coupling (PCC). This paper proposed a new control strategy to reduce harmonic components such as fifth and seventh harmonics at the PCC under nonlinear load in the islanded microgrid which includes more than two DG sources. The DG source operated with the proposed control scheme has ability to share the power commanded by the control center as well as to compensate the harmonic components voltage at PCC. The control scheme is developed based on the current controller composed of the resonant controller and a proportional integral controller. Because the reference current is estimated from the voltage harmonic and the injecting power, the control scheme is implemented without any additional hardware devices. The simulation and experimental results are given to verify the effectiveness of the proposed control method.
Análisis del impacto de la gestión de conocimiento y el capital intelectual sobre la competitividad de las pymes manufactureras de la región occidente de México

El presente trabajo tiene relacion con un analisis hecho a la pequena y mediana empresa manufacturera en la region occidental de Mexico, y que tiene que ver con los problemas similares en otros sectores productivos, tales como, la perdida de competitividad por falta de apoyos para mantener el crecimiento y el desarrollo. El constructo propuesto para este ejercicio de investigacion presenta las variables Gestion del Conocimiento y Capital Intelectual y el impacto sobre la variable competitividad en estas organizaciones. La herramienta metodologica utilizada fue un cuestionario aplicado a 418 organizaciones, todas ellas Pymes manufactureras aplicadas en los estados de Jalisco, Nayarit, Colima y Queretaro con un muestreo por conveniencia. Se utilizo ademas el analisis estadistico, teniendo como base la aplicacion de ANOVAS y de Regresion Lineal
QuadLab A toolkit for project-based learning in accordance with international standards in automation and robotics engineering

It is frequently claimed that the students must have an active role in building and transforming their own knowledge, and the teacher’s labor is to provide the students the necessary tools in order to reach specific learning objectives, included in a course program. This paper presents an aerial robotic system as a toolkit, and proposes a series of activities focused on the learning in automation and robotics. These proposed activities have been designed based upon the project-based learning methodology, and they facilitate the achievement of the learning objectives presented by CEA/ISA and satisfy the international standard ABET. The toolkit and the activities are oriented to impulse the practical teaching, giving the student additional motivation and, in consequence, improving his or her active role. Besides, the toolkit and the activities give the teacher a tool in which it is possible to assess the students learning process.
Mesenteric lymph duct ligation attenuates lung injury and neutrophil activation after intraperitoneal injection of endotoxin in rats.

BACKGROUND The release of injurious factors into the mesenteric lymph from the ischemic intestine has been shown to contribute to lung injury and systemic inflammation after shock and trauma. Since endotoxemia is also associated with gut injury, we tested the hypothesis that mesenteric lymph contributes to the lung injury seen in endotoxemia and that the ligation of the mesenteric lymph duct will attenuate this injury. METHODS To test this hypothesis, male Sprague-Dawley rats were given intraperitoneal injections (i.p.) of lipopolysaccharide (LPS) (10 mg/kg) with or without mesenteric lymph duct ligation (LDL). At 6 hours after injection of LPS, gut and lung injury, lung permeability, and neutrophil CD11b expression were measured. Lung permeability was quantified by calculating the percentage of Evan's Blue dye and the total protein concentration in the bronchoalveolar lavage fluid (BALF) when compared with the plasma and gut and lung injury were assessed morphologically. RESULTS LDL attenuated LPS- induced lung injury, lung permeability, and rat PMN CD11b expression but not villous injury. The magnitude of lung permeability as measured by Evan's Blue was approximately twofold greater in the LPS rats when compared with the LPS-treated rats with LDL. The expression of CD11b was greater in the LPS rats when compared with LPS rats with LDL or to sham controls (582 +/- 106 vs. 364 +/- 29 vs. 224 +/- 12 mean fluorescence intensity p < 0.001). CONCLUSION Based on the attenuation of lung injury and CD11b expression, these results suggest that LPS-induced lung injury and neutrophil activation is partially mediated through the release of factors from the injured gut into mesenteric lymph.
Construction of Salmonella typhimurium YG7108 strains, each coexpressing a form of human cytochrome P450 with NADPH–cytochrome P450 reductase

A series of Salmonella typhimurium (S. typhimurium) YG7108 strains, each coexpressing a form of human cytochrome P450 (CYP) (CYP1A1, CYP1A2, CYP1B1, CYP2C8, CYP2C9, CYP2C19, CYP2D6, CYP3A4, or CYP3A5) together with human NADPH–cytochrome P450 reductase (OR), was established. The parental S. typhimurium YG7108, derived from TA1535, lacks two O6‐methylguanine‐DNA methyltransferase genes, ada and ogt, and is highly sensitive to the mutagenicity of alkylating agents. The expression levels of CYP holo‐protein in the genetically engineered S. typhimurium YG7108 cells, determined by carbon monoxide (CO) difference spectra, ranged from 62 nmol/L culture for CYP2C19 to 169 nmol/L culture for CYP3A4. The expression level of the OR varied, depending on the form of CYP coexpressed, and ranged from 214 to 1029 units/L culture. Each form of CYP expressed in the S. typhimurium YG7108 cells catalyzed the oxidation of a representative substrate at an efficient rate. The rates appeared comparable to the reported activities of CYP expressed in human liver microsomes or CYP in other heterologous systems, indicating that the OR was sufficiently expressed to support the catalytic activity of CYP. These S. typhimurium strains may be useful not only for predicting the metabolic activation of promutagens catalyzed by human CYP but also for identifying the CYP form involved. Environ. Mol. Mutagen. 38:329–338, 2001. © 2001 Wiley‐Liss, Inc.
Towards an incentive-compatible, reputation-based framework for stimulating cooperation in opportunistic networks: a survey

In opportunistic networks (OppNets), routing and data forwarding among mobile devices are facilitated by relays or next-hop forwarders. To guarantee end-to-end data delivery it is important to provide participation. However, in sparsely connected OppNets, it is extremely challenging to monitor the behaviour of the relays and identify selfish/malicious relays cooperating with each other in order to forge routing information or drop useful data. Cooperation enforcement schemes are seen as a lightweight alternative to conventional secure forwarding techniques that involve cryptographically signed certificate exchanges, providing a ‘softer’ security layer to protect basic networking operations. In general, cooperation enforcement schemes fall into two broad categories: trust establishment via a reputation system and pricing or credit-based schemes. This study offers a comprehensive survey of representative cooperation enforcement schemes that exploit a reputation system. The authors analyse their distinct features, identify and discuss critical challenges that should be efficiently addressed when designing such mechanisms, indicating at the same time potential solutions and provide an informative table to display the authors’ findings. From this analysis, they examine issues and concerns surrounding the field of cooperation enforcement in OppNets, and provide guidelines and directions for future researchers.
Focal dilation and paradoxical collapse of cortical fissures and sulci in patients with normal-pressure hydrocephalus.

OBJECT The authors describe a subgroup of patients with shunt-proven normal-pressure hydrocephalus (NPH) who presented with focal fissural and sulcal dilation on imaging studies. The specific radiological features and methods of differentiating this condition from cortical atrophy are delineated. METHODS Normal-pressure hydrocephalus has been described as dilation of the ventricles that is out of proportion to the sulci. Sulcal dilation has been taken as evidence of cortical atrophy and has even been used as a criterion to exclude patients from undergoing a shunting procedure. The authors describe five cases of patients with shunt-proven NPH who presented with focal dilation of cortical fissures and sulci. In three of the cases, there was a paradoxical decrease in the size of the dilated fissures and sulci that paralleled the decrease in the size of the lateral ventricles following successful shunting. CONCLUSIONS This study demonstrates that focal fissural and sulcal dilation may represent reservoirs of cerebrospinal fluid analogous to the ventricular system. Patients should not be denied a shunting procedure solely on the basis of focally dilated fissures of sulci.
[Evaluation on the dietary iron absorption by young Tibetan men using stable isotopic tracer].

OBJECTIVE The study was aimed to evaluate the iron absorption in the Tibetan man's diet using the stable isotopic iron, and present a reference to improve the dietary iron absorption for Chinese. METHODS In the study conducted on the spot of high altitude (> 3500m), the iron tracer (FeSO4 enriched with 57Fe) and the recovery indicator dysprosium (Dy) were orally administrated to 16 young Tibetan men, and their feces were sampled. The ratios of 57Fe/56Fe in fecal samples was determined by inductively coupled plasma mass spectrometry, and then the iron absorption was calculated based on the principle of isotope dilution. RESULTS The rate of dietary iron absorption in young Tibetan men was 13.4% +/- 6.4% with good linear correlation between daily fecal excretions of iron tracer and Dy. CONCLUSION Dy had the same behavior as non-absorbed iron tracer in the digestive tract and the recovery of Dy may indicate the completeness of fecal collection. Dietary iron absorption in the adult Tibetan man was relatively high.
Multimode interference structures - properties and applications

The aim of this paper is to present operating principles and properties of multimode interference (MMI) structures and their basic applications in optoelectronic circuits. We discuss the principles of direct, mirrored and multiple image formation for the general and restricted interference. We also show the possibility of self-imaging effects in gradient index waveguides. Based on the above, we present MMI applications in splitters and couplers N×M technology of different configurations, Mach–Zehnder interferometers (MZI) and phase shifters.
The Effect of Multiple‐Dose, Oral Rifaximin on the Pharmacokinetics of Intravenous and Oral Midazolam in Healthy Volunteers

Study Objective. To evaluate the potential of rifaximin, an oral nonabsorbed (< 0.4%) structural analog of rifampin, to induce human hepatic and/or intestinal cytochrome P450 (CYP) 3A enzymes, with use of a known CYP3A probe, midazolam.
Controversies in the treatment of Burkitt lymphoma in AIDS

Purpose of review The success of combined antiretroviral therapy (cART) has transformed HIV infection into a survivable chronic disease in developed countries. Increasingly then, the risks of HIV associated cancers become paramount. Burkitt lymphoma is one of the cancer subtypes highly disproportionately affecting HIV infected patients. Recent findings Recent conference proceedings appear to corroborate early reports that intensive therapy of HIV-Burkitt lymphoma is feasible and effective. An optimal approach is not defined due to the small numbers of patients in current trials and the absence of comparison studies. Moreover, as breakthroughs in the pathogenesis of lymphoma in general and Burkitt lymphoma in particular suggest that HIV infection plays a significant role, the opportunity for targeted therapy based on differences in biology are wholly untapped. Summary Advances are being made in HIV-Burkitt lymphoma, but future studies need to incorporate our expanding understanding of biology to improve efficacy and reduce toxicity, preferably by integrating a biologic approach to this curable disease.
Age-Invariant Face Recognition Using Triangle Geometric Features

Whilst facial recognition systems are vulnerable to different acquisition conditions, most notably lighting effects and pose variations, their particular level of sensitivity to facial aging effects is yet to be researched. The face recognition vendor test (FRVT) 2012's annual statement estimated deterioration in the performance of face recognition systems due to facial aging. There was about 5% degradation in the accuracies of the face recognition systems for each single year age difference between a test image and a probe image. Consequently, developing an age-invariant platform continues to be a significant requirement for building an effective facial recognition system. The main objective of this work is to address the challenge of facial aging which affects the performance of facial recognition systems. Accordingly, this work presents a geometrical model that is based on extracting a number of triangular facial features. The proposed model comprises a total of six triangular areas connecting and surrounding the main facial features (i.e. eyes, nose and mouth). Furthermore, a set of thirty mathematical relationships are developed and used for building a feature vector for each sample image. The areas and perimeters of the extracted triangular areas are calculated and used as inputs for the developed mathematical relationships. The performance of the system is evaluated over the publicly available face and gesture recognition research network (FG-NET) face aging database. The performance of the system is compared with that of some of the state-of-the-art face recognition methods and state-of-the-art age-invariant face recognition systems. Our proposed system yielded a good performance in term of classification accuracy of more than 94%.
Ethnicité, consommation et retours temporaires au pays d’origine: le cas de la figure des Venants sénégalais

A partir de l’ethnographie de la migration traditionnelle des Soninkés et de récits biographiques de migrants sénégalais récents en France, l’objectif de l’article est de comprendre ce qui se joue en matière d’ethnicité lors de leurs retours au pays d’origine. Au-delà de l’idéal typique de la migration historique soninké, nous montrons l’existence d’une pluralité de processus identitaires en référence à des parcours récents. L’analyse de ces retours temporaires montre qu’il s’agit de moments forts durant lesquels les ethnicités sont en mouvement en lien notamment avec les redéfinitions du chez soi. Nous proposons trois éléments de discussion : le rôle de la figure du migrant dans son pays d’origine (ici appelé Venant) sur le processus de construction identitaire ; l’importance de ces retours dans l’acculturation du pays d’origine en matière de cultures et pratiques de consommation; l’organisation de la dynamique migratoire en reliant l’ethnicité et le chez soi.
Bordetella pertussis fimbriae (Fim): relevance for vaccines

Bordetella pertussis produces two serologically distinct fimbriae, Fim2 and Fim3. Expression of these antigens is governed by the BvgA/S system and by the length of a poly(C) tract in the promoter of each gene. Fim2 and Fim3 are important antigens for whole cell pertussis vaccines as clinical trials have shown an association of anti-fimbriae antibody-mediated agglutination and protection. The current five component acellular pertussis vaccine contains co-purified Fim2/3 and provided good efficacy in clinical trials with the anti-Fim antibody response correlating with protection when pre and post exposure antibody levels were analysed. The predominant serotype of B. pertussis isolates has changed over time in most countries but it is not understood whether this is vaccine-driven or whether serotype is linked to the prevailing predominant genotype. Recent studies have shown that both Fim2 and Fim3 are expressed during infection and that Fim2 is more immunogenic than Fim3 in the acellular vaccine.
Unknown Input Observers Design for Time-Delay Systems Application to An Open-Channel

This paper deals with the problem of full-order observers design for linear continuous delayed state and inputs systems with unknown input (UI) and time-varying delays. A method to design an Unknown Input Observer (UIO) for such systems is proposed based on a delay-dependent stability conditions of the state estimation error system. A Fault Detection and Isolation (FDI) scheme using a bank of such UIO, is also presented and tested on a (FDI) problem related to irrigation canals.
An improved circuit topology of modular multilevel converter (MMC) for DC to AC applications

This paper proposes a new circuit topology of MMC for DC to AC applications. The main advantage of the proposed topology is the elimination of lower arms of conventional MMC. Additionally, the DC bus voltage magnitude is half compared to conventional MMC. This is achieved by replacing the lower arms of conventional MMC topology with LC filter. The LC filter is designed to be a second order band stop filter which prevents the fundamental current to flow while allowing the DC and other harmonic currents to circulate. Operating principle and design of filter are included in the paper. The proposed circuit topology can be used in any DC to AC applications or grid connected applications e.g. STATCOM (Static Synchronous Compensator) or UPQC (Unified Power Quality Compensator).
Evaluating Vancomycin Use at a Pediatric Hospital: New Approaches and Insights

Abstract Objectives: To characterize vancomycin use at a pediatric tertiary-care hospital, to discriminate between initial (≤ 72 hours) and prolonged (> 72 hours) inappropriate use, and to define patient characteristics associated with inappropriate use. Design: Vancomycin courses were retrospectively reviewed using an algorithm modeled on HICPAC guidelines. Data were collected regarding patient demographics, comorbidities, other medication use, and nosocomial infections. The association between each variable and the outcome of inappropriate use was determined by longitudinal regression analysis. A multi-variable model was constructed to assess risk factors for inappropriate initial and prolonged vancomycin use. Setting: A pediatric tertiary-care medical center. Patients: Children older than 1 year who received intravenous vancomycin from November 2000 to June 2001. Results: Three hundred twenty-seven vancomycin courses administered to 260 patients were evaluated for appropriateness. Of initial courses, 114 (35%) were considered inappropriate. Of 143 prolonged courses, 103 (72%) were considered inappropriate. Multivariable risk factor analysis identified the following variables as significantly associated with inappropriate initial use: admission to the surgery service, having a malignancy, receipt of a stem cell transplant, and having received a prior inappropriate course of vancomycin. No variables were identified as significant risk factors for inappropriate prolonged use. Conclusions: Substantial inappropriate use of vancomycin was identified. Prolonged inappropriate use was a particular problem. This risk factor analysis suggests that interventions targeting patients admitted to certain services or receiving multiple courses of vancomycin could reduce inappropriate use.
CULTURA ORGANIZACIONAL E SEUS DETERMINANTES PARA ESTÍMULO DE CRIATIVIDADE NA SAMSUNG OCEAN CENTER – MANAUS-AM

A pesquisa trata de inovacao, especificamente o estimulo a inovacao que tem como a subsistencia a sobrevivencia das empresas. A criatividade aparece como uma face da imprevisibilidade do mercado e se torna um fator de protecao para estimular o processo criativo entre as empresas. Baseado no modelo FEPEACRI de pesquisa buscou-se identificar neste estudo os determinantes de criatividade dentro da Organizacao (Agencia de Inovacao) SAMSUNG OCEAN Manaus. A pesquisa foi desenvolvida na cidade de Manaus, capital do Estado do Amazonas. Buscou-se descrever os principais determinantes de estimulo a criatividade presentes na organizacao. Para tal elaboracao, os dados deste artigo foram obtidos por meio de entrevistas com questionario estruturado em duas sessoes contendo uma escala tipo Likert de 5 pontos, aplicada com todos os colaboradores da organizacao N=12(100%) no periodo entre marco e julho de 2017, baseados em analise qualitativa para caracterizacao de uma pesquisa descritiva. Identificar os determinantes de apoio a criatividade permitiu registrar um reflexo das principais caracteristicas desta organizacao. Como resultados encontrados, identificamos que os principais fatores encontrados de forma mais frequente entre os entrevistados sao os de estimulo e suporte. Em contra partida fatores de promocao podem ainda ser gerenciados com intuito de melhorar ainda mais o potencial criativo dentro da organizacao.
Sexual victimization, negative cognitions, and adjustment in college women.

OBJECTIVES To determine if negative cognitions accounted for the associations of sexual victimization with depression and alcohol-related problems among first-year college women. METHODS Data were collected from 719 first-year college females. Structural equation modeling was used to test if negative cognitive schemas mediated the links between sexual victimization and 2 outcomes. RESULTS Sexual victimization was related to higher levels of depression and alcohol-related problems, and negative cognitions partially accounted for these associations. Whether or not the incident happened in a dating context did not impact on cognitions. CONCLUSIONS Findings suggest that preventing negative cognitions might help offset adverse consequences associated with sexual victimization.