Miracle-dz/UniFAR-FTUs huggingface dataset:
Estudio de las cepas de estreptococos del grupo mutans presentes en binomios madre–hijo

Introduccion: los estreptococos del grupo mutans (MS) constituyen un grupo de bacterias asociadas con la patogenesis de la caries dental. La evidencia indica que el contacto directo madre-hijo durante la erupcion de los primeros dientes temporales es una forma comun de transmision, pero esta puede darse tambien durante la etapa predental, causando un posible aumento de riesgo a la caries. El objetivo fue evaluar la presencia de MS en binomios madre-hijo, y comparar los aislamientos realizados por fingerprinting del ADN cromosomico para determinar si en estos binomios se ha producido transmision vertical antes de la erupcion dental. Metodos: la presencia de MS fue evaluada en sesenta binomios madre-hijo por medio de cultivos en Agar Mitis Salivarius. Las cepas portadas por binomios madre-hijo en las que tanto la madre como el nino tenian presencia de MS (parejas positivas) fueron analizadas por fingerprinting del ADN cromosomico. Resultados: del grupo inicial de 60 binomios madre- hijo, resultaron 12 parejas positivas. En estas fueron identificadas 172 cepas de MS. El ADN cromosomico de estas fue purificado y digerido con HaeIII, los fragmentos separados por electroforesis en gel de agarosa permitieron obtener patrones de bandas, que fueron comparados con el programa Quantity One, que permitio identificar homologia en por lo menos una de las cepas, de 9 de las 12 parejas positivas. Conclusion: los resultados sustentan la idea de la transmision vertical de los MS y confirman su presencia en ninos en los que aun no se ha producido la erupcion dental. ABSTRACT. Introduction: Mutans Streptococci (MS) are a group of bacteria associated with the pathogenesis of dental caries. Evidence indicates that direct mother-to-infant contact during the eruption of the first primary tooth is a common mode of MS transmission, but this could also happen in pre dentate children, making possible an elevated dental caries risk. The objective was to assess the presence of MS in the pre-dentate infant and his or her mother, and to compare the strains using chromosomal DNA fingerprinting to ascertain the importance of vertical transmission before dental eruption. Methods: sixty pre-dentate infant-mother pairs were examined for the presence of MS using a Mitis Salivarius Agar. The strains harvested from the pre-dentate infants and their mothers (positive pairs) were analyzed by chromosomal DNA fingerprinting. Results: from the initial group of 60 pre-dentate infant-mother pairs, 12 were positive pairs. Genomic fingerprints of MS strains harvested from the 12 positive pairs were examined, and a total of 172 strains were found. Whole genomic DNA was purified and digested with HaeIII, fragments were separated by agarose gel electrophoresis. Genomic fingerprints were compared by the Quantity One Program. Homology in at least one strain was observed among 9 pre dentate infant–mother pairs. Conclusion: results support the notion of vertical transmission of MS, and confirm their presence in the pre dentate stage.
Frost Heave and Thaw Settlement in Tundra Environments: Applications of Differential Global Positioning System Technology

Technological advances in Differential Global Positioning Systems (DGPS), used in conjunction with specially designed survey targets, provide a means for accurately detecting frost heave and thaw settlement in cold environments, and for relating positions precisely in worldwide geodetic reference systems. Evidence acquired at West Dock and Flux Plot 3 in the Kuparuk River basin, North Slope of Alaska, confirm that DGPS is able to measure heave and thaw effectively and accurately at the centimeter-scale in tundra environments. Preliminary results indicate that heave and settlement show patterns of similar spatial variation to those of activelayer thickness (ALT), and weak to moderate correlations between ALT and heave/thaw. Preliminary DGPS results from Barrow, and a comparison with the records from the 1960s indicate that ground subsidence since the 1960s may have occurred. Results suggest that DGPS constitutes the current recommended approach for monitoring cryogenic phenomena and promises to be utilized for many years.
DETERMINAÇÃO DE GLIFOSATO E ÁCIDO AMINOMETILFOSFÔNICO EM ÁGUAS SUPERFICIAIS DO ARROIO PASSO DO PILÃO

Para investigar a presenca do herbicida Glifosato na microbacia hidrografica arroio Passo do Pilao foram coletadas amostras de agua em 15 distintos pontos no arroio Passo do Pilao, nos periodos de 30 e 60 dias apos a aplicacao do herbicida (DAAH), as quais foram analisadas por cromatografia a liquido de alta eficiencia (CLAE). As analises revelaram a presenca do herbicida nas aguas superficiais dessa microbacia, tanto nas amostras apos 30 dias de aplicacao do Glifosato como nas de 60 DAAH. Concentracoes elevadas (acima de 100 ppb) foram detectadas, principalmente em pontos proximos as areas de intenso cultivo. As concentracoes detectadas foram menores que 500 e 700 ppb, limites de concentracoes maximas permitidas para o Glifosato pela legislacao brasileira e pela Agencia de Protecao Ambiental dos Estados Unidos, respectivamente. DETERMINATION OF GLYPHOSATE AND AMINOMETHYLPHOSPHONIC ACID IN SUPERFICIAL WATERS OF ARROIO PASSO DO PILAO Abstract To investigation the presence of Glyphosate herbicide in Arroio Passo do Pilao watershed, samples of water were collected in 15 distinct points in Arroio Passo do Pilao, in period of 30 and 60 days after herbicide application (DAHA), which were analysed by high performance liquid chromatography (HPLC). The analysis revealed the presence of the herbicide in superficial areas of this watershed, even in the samples after 30 days of Glyphosate applicatication as in 60 DAHA. High concentrations (above 100 ppb) were detected, mainly in points near to intense cultivation areas. The concentrations detected were smaller than 500 and 700 ppb, limits of the maximum concentrations allowed for Glyphosate by the brazilian legislation and by the Environmental Protection Agency of United States, respectivelly.
UWB Positioning Systsem Design: Selection of Modulation and Multiple Access Schemes

In densely-populated cities or indoor environments, limited visibility to satellites and severe multipath effects significantly affect the accuracy and reliability of satellite-based positioning systems. To meet the needs of “seamless navigation” in these challenging environments an advanced terrestrial positioning system is under development. This system is based upon Ultra-Wideband (UWB) technology, which is a promising candidate for this application due to good time domain resolution and immunity to multipath. This paper presents a detailed analysis of two key aspects of the UWB signal design that will allow it to be used as the basis of such a high performance positioning system: the modulation scheme and the multiple access technique. These two aspects are evaluated in terms of spectral efficiency and synchronisation performance over multipath channels. Thus this paper identifies optimal modulation and multiple access techniques for a long range, high performance terrestrial positioning system using UWB.
A reconfigurable dual-mode Filter in Embedded Suspended Stripline Substrate Technology (ESSS)

A new configuration of embedded suspended stripline in PCB is proposed where a direct copper-to-copper connection joins the metalized cavity walls with the ground layer. The proposed stack-up has the advantage of an increased shielding compared to stack-ups based on via walls. A dual-mode filter demonstrator is designed and realized with discrete frequency tunability. The designed filter frequency is set around 30.5 GHz where the insertion loss (IL) is 1.06 dB and the Fractional Bandwidth (FBW) is 10.3%. The resonant frequency can be tuned to 29.60 GHz using a hardwired switch for a proof of concept. The realized prototype measurements show a good agreement between simulated and measured filters response.
Near-field microwave microscopy and multivariate analysis of XRD data

Title of dissertation: NEAR-FIELD MICROWAVE MICROSCOPY AND MULTIVARIATE ANALYSIS OF XRD DATA Christian Long, Doctor of Philosophy, 2011 Dissertation directed by: Professor Ichiro Takeuchi Department of Physics The combinatorial approach to materials research is based on the synthesis of hundreds or thousands of related materials in a single experiment. The popularity of this approach has created a demand for new tools to rapidly characterize these materials libraries and new techniques to analyze the resulting data. The research presented here is intended to make a contribution towards meeting this demand, and thereby advance the pace of materials research. The first part of the dissertation discusses the development of a materials characterization tool called a near field microwave microscope (NFMM). We focus on one particular NFMM topology, the open ended coaxial resonator. The traditional application of this NFMM topology is the characterization of the dielectric properties of materials at GHz frequencies. With the goal of expanding the capabilities of the NFMM beyond this role, we explore two non-traditional modes of operation. The first mode is scanning ferromagnetic resonance spectroscopy. Using this technique, we map the magnetostatic spin wave modes of a single crystal gallium doped yttrium iron garnet disk. The second mode of operation entails combining near field microscopy with scanning tunneling microscopy (STM). Operating in this mode, we show that the NFMM is capable of obtaining atomic resolution images by coupling microwaves through an atomic scale tunnel junction. The second part of the dissertation discusses the analysis of X-Ray Diffraction (XRD) data from combinatorial libraries. We focus on two techniques that are designed to simultaneously analyze all of the XRD spectra from a given experiment, providing a faster method than the traditional one-at-a-time approach. First, we discuss agglomerative hierarchical cluster analysis, which is used to identify regions of composition space that have similar crystal structures. Second, we discuss non-negative matrix factorization (NMF). NFM is used to decompose many experimental diffraction patterns into a smaller number of constituent patterns; ideally, these constituent patterns represent the unique crystal structures present in the samples. Compared to hierarchical clustering, NMF has the advantage of identifying multi-phase regions within the composition space. These techniques are also applicable to other types of spectral data, such as FTIR, Raman spectroscopy, XPS, and mass spectrometry. NEAR-FIELD MICROWAVE MICROSCOPY AND MULTIVARIATE ANALYSIS OF XRD DATA
Foreshocks, aftershocks, and remote triggering in quasi‐static fault models

[1] We present the results of time-space analysis of synthetic catalogs, generated using a quasi-static discrete fault model that is governed by rate- and state-dependent friction. These analyses reveal that increase in the postmain shock earthquake production rate occurs over an area surrounding the main shock rupture with dimensions that are several times larger than the main shock dimensions. We show that the increase in seismicity rate far from the main shock (where the static stress changes imposed by the main shock were small) is a consequence of multiple stress transfers and that the very distant aftershocks are not directly triggered by the main shock but that instead they are aftershocks of previous aftershocks. Snapshots of the fault state at progressive times prior to each main shock show that the regions which accelerated toward failure covered areas that were much larger than the final size of the main shock ruptures. As a result, as time approached the main shock time, the seismicity rate in these regions increased while the B value of the earthquake size distribution decreased. It has been previously suggested that remote seismicity rate increase could be triggered by the passage of seismic waves. Remote triggering in a quasi-static model indicates that it is not necessary to invoke such a “dynamic effect” in order to explain distant aftershocks.
THE U.S. NATIONAL PLANT GERMPLASM SYSTEM IN AN ERA OF SHIFTING INTERNATIONAL NORMS FOR GERMPLASM EXCHANGE

The United States National Plant Germplasm System (NPGS), one of the largest national plant germplasm systems, currently safeguards more than 466,000 accessions of more than 11,300 plant species. Most of those accessions were acquired internationally at a time when genetic resources were often exchanged informally, free of charge or other restrictions, and were viewed as abundant and part of humanity's common heritage. During the last 20 years, several national and international trends shifted the norms for germplasm exchange. Access to and exchange of plant genetic resources have become increasingly formal and sometimes more restricted. Acquiring new samples for the NPGS from domestic and international sources became increasingly complicated and in some cases problematic. In contrast, acquiring samples from the NPGS in general became easier because of computerized databases and communication, and more reliable and rapid long-distance transport. Conse-quently, the volume of NPGS samples distributed annually expanded steadily, to a current average of about 120,000 per year, free of charge or restriction. About 1/4 of total distributions are exported from the U.S. The current ratio of six NPGS samples exported internationally for every new sample imported by the NPCS will likely increase as research programs that use plant genetic resources grow in other nations. More of the samples conserved and distributed by the NPGS will be genetic stocks generated by large-scale genomics and biotechnology research projects, and elite, previously proprietary, varieties and hybrids that move into the public domain when their limited-duration intellectual property rights expire. Additional changes in NPGS holdings may occur in the future as the norms for international exchange of genetic resources evolve in concert with national and international trends in scientific research, and the evolution of access and benefit-sharing regimes.
Development of an ecosystem approach to the monitoring and management of Western Australian fisheries

(Cth), no part of this publication may be reproduced by any process, electronic or otherwise, without the specific written permission of the copyright owners. Information may not be stored electronically in any form whatsoever without such permission. Disclaimer The authors do not warrant that the information in this document is free from errors or omissions. The authors do not accept any form of liability, be it contractual, tortious, or otherwise, for the contents of this document or for any consequences arising from its use or any reliance placed upon it. The information, opinions and advice contained in this document may not relate, or be relevant, to readers' particular circumstances. Opinions expressed by the authors are the individual opinions expressed by those persons and are not necessarily those of the publisher, research provider or the FRDC. The Fisheries Research and Development Corporation plans, invests in and manages fisheries research and development throughout Australia. It is a statutory authority within the portfolio of the federal Minister for Agriculture, Fisheries and Forestry, jointly funded by the Australian Government and the fishing industry. Objectives 1. Test the robustness of statistical procedures to identify impacts of multi-sector fishing on community composition using existing fishery data. 2. Assess the level of change in community composition in each bioregion of WA during the previous 30 years. 3. Identify key data to which ecosystem structure and management strategies are most sensitive and which should be collected in the future. 4. Identify critical changes in exploitation and/or environment that would impact marine ecosystems markedly. 5. Identify areas where more detailed research and/or monitoring are needed. Outcomes achieved to date results obtained from analysis of commercial fishery data have demonstrated that there has been no reduction in mean trophic level or mean maximum length in the finfish catches recorded within the West Coast, South Coast, Gascoyne, Pilbara or Kimberley bioregions, as would be expected if fish faunas were experiencing the phenomenon termed " fishing down the food web ". On the contrary, trophic level and mean maximum length have increased, possibly reflecting an expansion of the fisheries onto previously less exploited components of the stocks. The management strategy used for the demersal fishery in the West Coast Bioregion, i.e. maintaining fishing mortality below reference points derived from estimates of natural mortality, was found likely to be very effective in producing a recovery of depleted fish stocks and, provided appropriate abundance, …
Research on Assessment Algorithm for Network Security Situation based on SSA-BP Neural Network

The network security situation assessment technology can assess the severity of threats to the network system as a whole, find out potential security risks in the network as soon as possible and help managers fully grasp the overall security situation of the network. Aiming at the problems of low assessment efficiency and poor convergence of traditional situation assessment algorithms, a network security situation assessment algorithm based on BP neural network optimized by Sparrow Search Algorithm is proposed. The algorithm uses the Sparrow Search Algorithm to find the optimal weight and threshold and assigns them to the BP neural network for optimization. Then, the situation data is inputted into the algorithm for training to get the situation assessment values, and the threats to the network system are assessed according to the constructed network security situation index system. Comparative experiment results show that the algorithm has faster convergence speed and can objectively reflect the current network security situation.
Design and Simulation of 1.2kV SiC Super-junction SBD with Vertical Variation Doping

In this paper, a 1.2kV SiC super-junction SBD with vertical variation doping (VVD-SJ-SBD) is proposed and investigated by Sentaurus TCAD. It is known that the breakdown voltage (BV) of conventional SiC super junction Schottky diode (C-SJ-SBD) is sensitive to the doping of p-type region due to the essential charge balance required in a SJ-based structure, resulting in a poor process tolerance. The n-type epi-layer of SiC VVD-SJ-SBD proposed in this paper is divided into three layers. The middle layer is heavily doped, and sandwiched between two lightly doped layers. By introducing such vertical variation doping profile into the epitaxy, the SiC VVD-SJ-SBD structure can reduce the sensitivity of BV to the doping concentration of p-type region, resulting in the improvement of the process window. Furthermore, the influence of parameters variation on BV of SiC VVD-SJ-SBD is addressed as well.
ENSO niños 1: Primera encuesta nacional de sobrepeso y obesidad en niños uruguayos

1. Profesor Agregado de Endocrinologia y Metabolismo. Catedra de Endocrinologia y Metabolismo. Facultad de Medicina. Universidad de la Republica Oriental del Uruguay. 2. Ex Asistente de Toxicologia. Facultad de Medicina. Universidad de la Republica Oriental del Uruguay. 3. Profesor Adjunto de Endocrinologia y Metabolismo. Catedra de Endocrinologia y Metabolismo. Facultad de Medicina. Universidad de la Republica Oriental del Uruguay . 4. Endocrinologa. Con el apoyo economico del Laboratorio Roche-Uruguay. Correspondencia: Dr. Raul Pisabarro. Domingo Cullen 693. Montevideo-Uruguay. E-mail: clibarro@netgate.com. uy Recibido: 30/5/02. Aceptado: 4/10/02. Resumen
THE ROLE OF DECAY AND MINERALIZATION IN THE PRESERVATION OF SOFT-BODIED FOSSILS

▪ Abstract Fossil deposits that preserve soft-bodied organisms provide critical evidence of the history of life. Usually, only more decay resistant materials, e.g., cuticles, survive as organic remains as a result of selective preservation and subsequent diagenesis to more resistant biopolymers. Permineralization, the permeation of tissues by mineralizing fluids, may preserve remarkable detail, particularly of plants. However, evidence of more labile tissues, e.g., muscle, normally requires the replication of their morphology by rapid in situ growth of minerals, i.e., authigenic mineralization. This process relies on the steep geochemical gradients generated by decay microbes. The minerals involved, and the level of detail preserved (which may be subcellular), depend on a number of factors, including the nature of microbial activity and amount of decay, availability of ions, and the type of organism that is fossilized. Understanding these controls is essential to determining the conditions that favor exce.
Fire Detection Approach using Robust Moving-Region Detection and Effective Texture Features of Fire

This paper proposes an effective fire detection approach that includes the following multiple heterogeneous algorithms: moving region detection using grey level histograms, color segmentation using fuzzy c-means clustering (FCM), feature extraction using a grey level co-occurrence matrix (GLCM), and fire classification using support vector machine (SVM). The proposed approach determines the optimal threshold values based on grey level histograms in order to detect moving regions, and then performs color segmentation in the CIE LAB color space by applying the FCM. These steps help to specify candidate regions of fire. We then extract features of fire using the GLCM and these features are used as inputs of SVM to classify fire or non-fire. We evaluate the proposed approach by comparing it with two state-of-the-art fire detection algorithms in terms of the fire detection rate (or percentages of true positive, PTP) and the false fire detection rate (or percentages of true negative, PTN). Experimental results indicated that the proposed approach outperformed conventional fire detection algorithms by yielding 97.94% for PTP and 4.63% for PTN, respectively.
GatherMySteps

Smartphones have become ubiquitous and a part of ourselves. Since we carry them everywhere, they are the perfect devices to record our memories: through photos, videos and through lifelogging. One specific form of lifelogging is geographic lifelogging, which consists in recording our own trajectories. Anyone with a GPS enabled device, can effortlessly record their own trajectories. Those recordings, however, often contain noise introduced by the lack of accuracy of commercial GPS devices or even regions where no recording was made, due to sensor or human error. Also, the raw recordings do not contain any explicit personally relevant information, such as the relevant places that we moved between, the purpose of our visits, or the transportation modes used in our trajectories. Furthermore, the recordings that need to be processed in a geographic lifelogging context may range from a few, to dozens, on a daily basis. Within this frame, we propose GatherMySteps. GatherMySteps is an application focused on simplifying the processing of GPS recordings — tracks, with an emphasis on usability and proactivity (suggesting the most likely corrections and annotations to the user) to make the lifelogging process as efficient as possible. It provides simplification, editing and learning capabilities so that the user can correct and validate the tracks. Then, a fast and powerful semantic editor is used to annotate the locations and transportation modes of all the trajectories in a day. We evaluated our system using usability user tests, with the help of 20 participants. We conclude that our solution is efficient to process and annotate tracks, with a small amount of clicks and time.