Miracle-dz/UniFAR-FTUs huggingface dataset:
Adaptações metabólicas dos crustáceos ao déficit de oxigênio ambiental

The oxygen levels in water are fundamental importance in the distribution of life, especially the animals. Oxygen is one of the most important gases in the dynamics and the characterization of aquatic ecosystems where it could cause a reduction in their levels (hypoxia) or even the absence (anoxia). The tolerance to hypoxia/anoxia is highly variable among animals. In crustaceans were identified adaptive strategies that allow the survival of the species can be highlighted: the use of anaerobic pathways for ATP production, maintenance of high concentrations of glycogen and phosphate under aerobic and metabolic depression. The use of anaerobic glycolysis pathways is the fundamental way to produce ATP. The strategy of metabolic depression is a very common mechanism used by animals to cope the environmental stress and for many species, this is the primary strategy. The maintenance of high concentrations of glycogen and phosphate is also an adaptation made by several species of crustaceans to hypoxia/anoxic. Beyond tolerance to this environment, animals must contend with periods of recovery to normal levels of oxygen. The recovery phase is important for the replenishment of energy reserves and the removal of the finished products stored. Research on the adaptations of species, mainly metabolic, are essential to a better understanding of the mechanisms used by the species to survive in environments with low oxygen levels.
Atomic Data Revisions for Transitions Relevant to Observations of Interstellar, Circumgalactic, and Intergalactic Matter

Measurements of element abundances in galaxies from astrophysical spectroscopy depend sensitively on the atomic data used. With the goal of making the latest atomic data accessible to the community, we present a compilation of selected atomic data for resonant absorption lines at wavelengths longward of 911.753 Å (the H i Lyman limit), for key heavy elements (heavier than atomic number 5) of astrophysical interest. In particular, we focus on the transitions of those ions that have been observed in the Milky Way interstellar medium (ISM), the circumgalactic medium (CGM) of the Milky Way and/or other galaxies, and the intergalactic medium (IGM). We provide wavelengths, oscillator strengths, associated accuracy grades, and references to the oscillator strength determinations. We also attempt to compare and assess the recent oscillator strength determinations. For about 22% of the lines that have updated oscillator strength values, the differences between the former values and the updated ones are ≳0.1 dex. Our compilation will be a useful resource for absorption line studies of the ISM, as well as studies of the CGM and IGM traced by sight lines to quasars and gamma-ray bursts. Studies (including those enabled by future generations of extremely large telescopes) of absorption by galaxies against the light of background galaxies will also benefit from our compilation.
Optical Guiding and Feedback Structures in GaN-Based Vertical-Cavity Surface-Emitting Lasers

The Vertical-Cavity Surface-Emitting Laser (VCSEL) made from GaAs-based materials is an established infrared light source, and is produced in large volumes for short-distance optical links, computer mice, and thermal processing systems. A wide range of applications, such as high-resolution printing, general lighting, and biomedical diagnosis and treatment could benefit from using a VCSEL with blue or ultraviolet emission. A promising solution is the use of GaN-based materials, here only a few research groups have so far demonstrated electrically pumped GaN VCSELs with optical output powers in the milliwatt-range and threshold current densities <10 kA/cm^2, unfortunately though the devices degrade after a few minutes. The major challenges are achieving broadband high-reflectivity mirrors, vertical and lateral carrier confinement, efficient lateral current spreading, accurate cavity length control, and lateral optical mode confinement. This thesis is focused on exploring the lateral optical Guiding and feedback structures for GaN VCSELs. By numerical simulations, the most commonly used GaN VCSEL cavities were investigated and it was shown that many structures used for lateral current confinement result in unintentionally anti-guided resonators with associated high optical losses. Such resonators have a built-in modal discrimination but the threshold gain is highly dependent on nanometer-sized changes in the structure. In addition, the anti-guided resonators have a strong Temperature dependent characteristic, since thermal lensing suppresses the lateral optical leakage. Both distributed Bragg reflectors (DBRs) and high contrast gratings (HCGs) were explored as optical feedback structures. The effect of compositional interlayers on the vertical electrical conductivity of Si-doped AlN/GaN DBRs was investigated. The DBR with no interlayers showed state-of-the-art resistivity for an AlN/GaN DBR as low as 0.044 Ohm-cm^2 for 8 mirror pairs. The DBRs with compositional interlayers had resistivities between 0.16–0.34 Ohm-cm2, indicating that the incorporation of interlayers can impair the vertical current transport. An alternative to a DBR, a high contrast grating (HCG) in TiO2/air was demonstrated for the first time. The fabricated HCG showed a high reflectivity of >95 % over a 25 nm wavelength span.
THE EFFECT OF FOREIGN DIRECT INVESTMENT AND MULTINATIONAL CORPORATIONS ON SUSTAINABLE DEVELOPMENT IN NIGERIA: HALO OR HAVEN? EMPHASIS ON CO2 ANTHROPOGENIC EMISSION

Although data on single-country environmental indicators exist in short-span leading to the use of crosssection or panel data by most related studies, there has been attempts to understand country-specific analysis of FDI-Environment nexus. This study explores the relationship between FDI and the operations of Multinational Corporations (MNCs) on sustainable development in Nigeria- the major destination for FDI inflow to West Africa. Using CO2 emission as the measure of environmental degradation, we employ annual data spanning from 1970 through 2005 to investigate whether the “pollution haven” or “pollution halo” scenario holds in Nigeria. By applying the Autoregressive Distributed Lag (ARDL) approach to cointegration to examine the nature of the relationship, we found that FDI is negatively related to CO2 emission. This suggests a scenario of “pollution halo”; implying that if CO2 is considered a measure of environmental degradation, more FDI inflow is beneficial and compatible with sustainable development since we found no evidence for “pollution haven” for the aggregate FDI inflows to all sectors. We suggest future research in this area to employ sector-specific data on FDI inflow so that a direct delineation could be made between the environment-degenerating and environment-benign destinations of FDI inflows to Nigeria. Besides, other measures of environmental quality such as water pollution and the destruction to aquatic habitat, most especially in the South-South region of Nigeria, could also be explored since the result from this study may not be generalized for other measures of environmental quality (Deacon and Norman, 2006). The unique contribution of this study lies in the fact that, it is the first single-country focused study to examine FDI-Environment nexus for the case of Nigeria.
Research on LTE/Wi-Fi Coexistence in Unlicensed Bands

Spectrum sharing is a highly-efficient method to solve the problem of the exponential capacity demand increase in wireless communication. Long Term Evolution(LTE) and Wi-Fi are two of the most remarkable wireless technologies nowadays. And it is of great importance to research on the coexistence of the two technologies. When the interference level goes below a certain threshold, the channel is accessible to communication nodes while operating Wi-Fi network. As a result, it exerts significant influence on Wi-Fi operation with LTE coexisting. The work introduces some schemes in order to realize LTE/Wi-Fi coexistence. As demonstrated in the test results, the spectral efficiency of LTE is higher than that of Wi-Fi in unlicensed band. Therefore, it is reasonable for LTE to compete for using unlicensed band. Simulation results show that there is a significant increase in the cell throughput and the communication rate of users by aggregating licensed band and unlicensed band in LTE network. Meanwhile, it turns out to be a slight lower performance of Wi-Fi. The range of the performance degradation of Wi-Fi is narrower than that of the performance promotion of LTE, thus achieving the performance promotion of overall system. Keywords—LTE/Wi-Fi coexistence; unlicensed bands; channel selection; supplement down link
Deriving Meaningful Equivalent Circuits for Electrically Small Multi-Conductor Structures

A new circuit reduction algorithm for generating physically meaningful equivalent circuits for electrically small structures is proposed in this work. It makes use of the generalized Y-to-Δ transformation as well as features unique to partial element equivalent circuits (PEECs) to perform the reduction process. For a given partial element equivalent circuit, insignificant nodes are removed one by one in a prioritized order according to both user-specified cut-off frequency and threshold value. By having the freedom of choosing these parameters, this algorithm provides users an option to make a tradeoff between accuracy and simplicity of the final reduced circuit. Since the generalized Y-to-Δ transformation can keep all mutual couplings intact, the order-reduced circuit should correctly capture all physical essences of the structure being modeled. Two examples are presented in this paper to validate the proposed algorithm. The equivalent circuits obtained can indeed reflect all essential physical features, demonstrating that the algorithm is a useful tool for designing and analyzing electrically small multi-conductor structures.
On the Role of Protein Oxidation and Heat Shock Proteins in Senescence and Fitness

Similar to the ageing process of eukaryotes, oxidative damage to cellular macromolecules may be involved in deterioration of growth arrested (stationary phase) Escherichia coli cells; a process referred to as 'conditional cell senescence'. In this work we demonstrate that the heat shock proteins (Hsps) are key players in the cellular defence against deleterious protein oxidation (carbonylation) during conditional senescence in E. coli cells, that such oxidation is linked to increased production of aberrant proteins caused by increased mistranslation, and that carbonylation of aberrant proteins, which are intrinsically sensitive to oxidation, can occur in the absence of increased oxidative stress. Hsp70 (DnaK), together with the Lon and ClpQY Hsp proteases, are shown to be major participants in protecting stationary phase cells against accumulation of carbonylated proteins. A further link between protein oxidation and Hsps were established by results showing that induction of the heat shock regulon in response to increased mistranslation requires oxidative modification of the malformed proteins. This is shown to be true both for cells entering stationary phase and for cells in which the ribosomes display reduced translational fidelity due to mutations in the ribosomal accuracy centre. In addition to affecting Hsp regulation, mistranslated and oxidized proteins, also affect stationary phase elevation of the transcription factor, SigmaS (os) and induction of the os regulon. Mechanistically, this effect of mistranslation on os acts via titration of the ClpP-protease (ClpXP is responsible for os degradation). os is a key player in switching gene expression from growth/reproduction related activities towards those of maintenance and is essential, similar to the Hsps, to counteract protein oxidation upon entry of cells into stationary phase. Furthermore, using Salmonella enterica serovar Typhimurium LT2 we demonstrate that random mutations achieved during evolution interact such that their combined effect on fitness is mitigated (antagonistic epistasis). The levels of DnaK and GroEL were elevated in lineages with many point mutations. Also, ectopic overproduction of GroEL was demonstrated to increase fitness in such strains. These data suggest that chaperones may buffer the cell against the fitness cost caused by the accumulated mutations and provides a mechanistic, physiological, explanation for antagonistic epistasis.
The importance of ENSO phase during volcanic eruptions for detection and attribution

Comparisons of the observed global‐scale cooling following recent volcanic eruptions to that simulated by climate models from the Coupled Model Intercomparison Project 5 (CMIP5) indicate that the models overestimate the magnitude of the global temperature response to volcanic eruptions. Here we show that this overestimation can be explained as a sampling issue, arising because all large eruptions since 1951 coincided with El Niño events, which cause global‐scale warming that partially counteracts the volcanically induced cooling. By subsampling the CMIP5 models according to the observed El Niño–Southern Oscillation (ENSO) phase during each eruption, we find that the simulated global temperature response to volcanic forcing is consistent with observations. Volcanic eruptions pose a particular challenge for the detection and attribution methodology, as their surface impacts are short‐lived and hence can be confounded by ENSO. Our results imply that detection and attribution studies must carefully consider sampling biases due to internal climate variability.
An fMRI-based NeuroIS Research on Metacognition in the Context of E-commerce

The IS research has long centered on HCI solely from the perspective of cognition. The research of metacognition has not kept pace with the demand for new knowledge, especially in the domain of e-commerce. This research attempts to open the “Black box” of metacognition by combination of fMRI-based neurophysiological methodology and traditional psychometric measures. Focusing on Comparison Shopping Engine (CSE) and general search engine, the study examines how IT artefacts stimulate consumer’s neural activities in the region of interest (ROI) related to metacognition during online shopping experience. An fMRI experiment and a pilot behavioral study are planned to compare consumer’s responses in distinct experimental environments. Consumer’s evaluation of e-commerce websites is measured to explore its correlation with metacognition. We will advance our work in the further steps.
Health Benefits Of Whole Grains: A Literature Review

Whole grains are also rich sources of essential nutrients. The future years are going to see the numerous health benefits of eating whole grains. It is quite difficult to get a food material with almost all vital nutrients like whole grains. IP-6 from the whole grain extract is a promising drug of the future. Extensive research is going on, the role of phytoestrogens on breast cancer which is the killer cancer in the United States.
Performance Analysis of Metro WDM Star Network based on An Arrayed Waveguide Grating

In this paper, we analyze the performance of a reliable, scalable, and cost-effective switchless wavelength division multiplexing (WDM) network based on an arrayed waveguide grating (AWG). The network efficiency is significantly increased by spatially reusing wavelengths and exploiting multiple free spectral ranges (FSRs) of the AWG employed in the architecture. We have analyzed the performance of this architecture by simulating in $Optsim^{TM}$ with a control channel which exploits the broadband light source, i.e., an LED. The data was successfully transmitted to a distance of 30 km without using any EDFA's in the network, with a reasonable BER of $4.0530{\times}10^{-14}$ . We have analyzed the performance of this architecture with a control channel which exploits the broadband light source, i.e., an LED, by simulating in $Optsim^{TM}$ .
A SPATIAL EXTRAPOLATION TECHNIQUE FOR SPARSE MEASUREMENTS OF PROPELLER- INDUCED HULL-PRESSURES USING AN INVERSE ACOUSTIC BOUNDARY ELEMENT METHOD

This paper presents a computational method for obtaining a complete description of the propeller-induced fluctuating ship hull-pressure field on the basis of only a few hull-pressure measurements. The method relies on the inverse use of a boundary element method (BEM) for underwater acoustic diffraction on ship hulls. It enables the determination of the ship’s forcing terms for input into finite element vibration analyses. As a by-product, the propeller source strength is computed on the basis of which the correlation between model and ship scale hullpressure data may be established.
Exact Travelling Wave Solutions of Nonlinear Wave equations Using Tanh-function Method

This paper is concerned with the exact traveling wave solutions of nonlinear wave equations. Using the tanh function method, we can obtain the accurate expression of the solutions. Further, according to the images of the solutions, we can get the variation depends on the velocity v . Introduction It is well known that nonlinear phenomena are very important in a variety of scientific fields, especially in fluid mechanics, solid state physics, plasma physics, plasma waves, capillary-gravity waves, and chemical physics. Most of these phenomena are described by nonlinear partial differential equations. Analytical solutions of this problems are usually not available, especially when the nonlinear terms are involved. Therefore, finding its travelling solutions is of practical importance. The methods of looking for exact traveling wave solutions of nonlinear evolution equations, has been tremendous development in recent decades, such as inverse scattering method [2], HI Rota’s bilinear technique [5], the Painlve expansion method [13]. In the early nineties of last century, Huibin and Kelin [7] proposed a new method. The main idea of this method is taking hyperbolic tangent function of the power series as possible traveling wave solutions of the nonlinear evolution equations. Then they substituted the power series directly to KdV equation, and obtained the coefficients of the power series. However this method involved very complicated algebra computation. In order to reduce the complex algebra computation, Malfiety [9-11] proposed the tanh-function method. Since all the derivatives of hyperbolic tangent can be expressed by the hyperbolic tangent in itself, this simple translation makes the method can be applied to more nonlinear evolution equations. Fan et al. [3] proposed the extended hyperbolic tangent method, which replace the tanh-function by the solutions of Riccati equation. In [1, 4, 14, 16, and 17], using the tanh function method, they got the exact form of traveling wave solutions of various types of evolution equations. In recent years, the G ′ /G function method [15], the auxiliary function method [6] is based on tanh-function method. This shows that the hyperbolic tangent function method is very effective and direct method when looking for the exact traveling wave solutions of nonlinear evolution equations. The Tanh-function Method Let’s consider the nonlinear partial differential equations ( ) 0 t =   , , , , , xxx xx x u u u u u N (2.1) Where ( ) t x u , is the real function on 2 R ? At first, we assume the traveling wave solutions of (2.1) are the form of (x, t) U( ) U(c(x )), u t ω u = = − (2.2) With the velocity v , and the constant c. Submitted (2.2) into (2.1), we can get the ODEs About ω (U, U , U , U ,.) 0. N ′ ′′ ′′′ = (2.3) Second, we assume the possibly traveling wave solutions can be written International Conference on Information Sciences, Machinery, Materials and Energy (ICISMME 2015) © 2015. The authors Published by Atlantis Press 1325 0 (x, t) U( ) H(Y) , K i i i u a Y ω
School environment and physical activity in children and adolescents: systematic review

The aim of this study was to identify, discuss and summarize findings from articles on the association between characteristics of the school environment and physical activity in children and adolescents. We followed the PRISMA guidelines for systematic reviews. Articles were identified in PubMed. The main inclusion criteria were: (a) studies with children and adolescents – studies with preschool children only were excluded because they were covered in a recent review; (b) physical activity as the outcome; (c) school environment characteristics as the exposure variable. Outcome variables were heterogeneous across the 13 studies, including recess physical activity practice, extracurricular sports practice, Physical Education classes and total physical activity. Half of the studies used objective physical activity measures. The evaluation of school environments was again heterogeneous, ranging from checklists of spaces, satellite photos and interviews with school teachers and principals comprising sociocultural dimensions of the environment, policies and PE classes, but mainly measures of the built environment. No definitive conclusion about the influence of school environment on physical activity can be drawn due to the heterogeneity across studies, settings dimension assessed and the lack of prospective data. However, several features such as improvements in playgrounds, health promotion policies at school, and positive perceptions of the school environment seem to be associated with increased physical activity among children and adolescents.
Coordination of Information Sharing and Cooperative Advertising in a Decentralized Supply Chain with Competing Retailers Considering Free Riding Behavior

This paper studies a decentralized supply chain in which a manufacturer sells a common generic product through two traditional and online retailers under free riding market. We assume that the traditional retailer provides the value added services but the online retailer does not. Factors such as retail prices, local advertising of the retailers, global advertising of the manufacturer and service level of the traditional retailer simultaneously has effect on market demand. This paper studies the cost information sharing between the manufacturer and traditional retailer and uses the cooperative advertising program as an incentive mechanism for information sharing under free riding. This paper also examines how the free riding phenomenon affects the information sharing between the manufacturer and traditional retailer and also the supply chain coordination. Our analysis shows that, through the cooperative advertising program, information sharing between the manufacturer and traditional retailer is always beneficial for all the supply chain members and therefore, the entire supply chain is coordinated except when the traditional retailer is not efficient and the degree of free riding is relatively small.