Miracle-dz/UniFAR-FTUs huggingface dataset:
POLYPHENOL PROFILES OF TUNISIAN APPLES AND EVALUATION OF THEIR TOTAL ANTIOXIDANT CAPACITY

Six varieties of Tunisian apples were studied on the basis of their detailed polyphenol profiles. Reversed Phase High performance Liquid Chromatography (RP-HPLC) was used to separate and identify the compounds. Thiolysis coupled to RP-HPLC was used to determine the nature and the proportion of the constitutive units as well as the concentration of procyanidins. The structural analysis of some phenolic compounds was carried out using an ion trap mass spectrometer equipped with an electrospray source (LC-ESI-MS) used in negative mode. The total antioxidant capacity was determined using the FRAP method.
Adaptation and Validation of a Methodology for the Measurement of Calcium Fractions in Fruits

ABSTRACT Calcium (Ca) content of fruit is related to fruit quality. However, total content alone is insufficient to judge fruit quality; calcium partitioning and chemical form are also important. There are multiple validated methods for determining total calcium content. However, methodologies to measure calcium fractions are not widely known and tend to be complex, affecting their accuracy. Here, based on previous work, we aim to adapt and validate a method for the extraction of the various forms of calcium in fruits. The main modification was freezing samples to minimize the loss of sample material in the procedure, reducing the centrifugation time and speed, and the addition of nitric acid (HNO3) to improve digestion and eliminate interference from the matrix. An experiment with table grape berries cv. Thompson seedless in harvest and Postharvest (35 days) was carried out. The results of the total calcium were compared with the conventional methodology of calcination and inductively coupled plasma (ICP) measurement. We detected no and no significant differences between the two tested methods. Electron Microscope - Energy-dispersive X-ray spectroscopy analysis (SEM-EDS) and the presence of calcium oxalates were verified.
High-pressure phase transitions in MgCr2O4·Mg2SiO4 composition: Reactions between olivine and chromite with implications for ultrahigh-pressure chromitites

Abstract Phase relations in the Mg2SiO4-MgCr2O4 system were investigated in the pressure range of 9.5–27 GPa at 1600 °C to examine the possible deep mantle origin of ultrahigh-pressure (UHP) chromitites in ophiolites. The experimental results indicate that MgCr2O4-rich chromite (Ch) coexists with Mg2SiO4- rich olivine (Ol) below ~13.5 GPa in the equimolar Mg2SiO4·MgCr2O4 composition. Above ~13.5 GPa, they react to form a three-phase assemblage: garnet (Gt) solid solution in the Mg4Si4O12-Mg3Cr2Si3O12system, modified ludwigite (mLd)-type Mg2Cr2O5 phase and Mg14Si5O24-rich anhydrous phase B (Anh-B). At ~19.5 GPa, Anh-B is replaced by Mg2SiO4-rich wadsleyite (Wd). At 22 GPa, MgCr2O4-rich calcium titanate (CT) phase coexists with Mg2SiO4-rich ringwoodite (Rw). The assemblage of CT+Rw changes to CT + MgSiO3-rich bridgmanite (Brg) + MgO periclase at 23 GPa. These sequential phase changes indicate that Ch+Ol do not directly transform to CT+Rw but to the three-phase assemblage, Gt+mLd+Anh-B (or Wd), that becomes stable at pressures corresponding to the upper and middle parts of the mantle transition zone. Our results suggest that the UHP chromitites that have been studied so far did not reach transition zone depths during mantle recycling processes of the chromitites, because there is no evidence of the presence of the reaction products of Ol and Ch. If the reaction products, in particular mLd and Anh-B, are found in the UHP chromitites, they are good indicators to estimate the subduction depth of the chromitites.
Recent advances in hydrophilic modification and performance of polyethersulfone (PES) membrane via additive blending

The blending of additives in the polyethersulfone (PES) matrix is an important approach in the membrane industry to reduce membrane hydrophobicity and improve the performance (flux, solute rejection, and reduction of fouling). Several (hydrophilic) modifications of the PES membrane have been developed. Given the importance of the hydrophilic modification methods for PES membranes and their applications, we decided to dedicate this review solely to this topic. The types of additives embedded into the PES matrix can be divided into two main categories: (i) polymers and (ii) inorganic nanoparticles (NPs). The introduced polymers include polyvinylpyrrolidone, chitosan, polyamide, polyethylene oxide, and polyethylene glycol. The introduced nanoparticles discussed include titanium, iron, aluminum, silver, zirconium, silica, magnesium based NPs, carbon, and halloysite nanotubes. In addition, the applications of hydrophilic PES membranes are also reviewed. Reviewing the research progress in the hydrophilic modification of PES membranes is necessary and imperative to provide more insights for their future development and perhaps to open the door to extend their applications to other more challenging areas.
Estimation of non-linear root water uptake parameter using genetic algorithms

Abstract The present study is concerned with the estimation of non-linear root water uptake parameter using Genetic Algorithm (GA) technique. Various models have been proposed to predict root water uptake. However, from the studies and observations it has been found that the nature of root water uptake is non-linear. The non-linear root water uptake model termed as O–R model coupled with soil moisture flow equation is developed to predict the root water uptake pattern. The O–R model incorporates a parameter ‘β’ to account for the non-linearity in root water uptake. In the present study, parameter β is estimated through inverse modelling using GA optimization technique. The parameter is optimized by minimizing the difference between model predicted and experimentally observed percentage soil moisture depletion in the root zone. To check the efficacy of the developed model, the optimization procedure is validated from hypothetically generated percentage soil moisture depletion corresponding to an assumed β value. The model is applied to wheat crop (Triticum) for estimation of non-linear root water uptake parameter. The results show that linked simulation optimization model based on GA method accurately determines the non-linear root water uptake parameter for a given crop.
Axisymmetric finite volumes for the numerical simulation of bulk CO 2 transport and assimilation in a leaf

This paper deals with the numerical simulation of CO2 transport in the leaf. We study a mathematical model of the diffusion and photosynthes is processes, and present the implementation of an axisymmetric cell centred finite volume scheme for their numerical simulation. The resulting code enables the computation of the lateral diffusion coefficient in the leaf porous medium, from experimental measurements which yield the point wise value of internal CO2 concentration. Hence our model and numerical code allow the analysis of the role of the internal diffusion in the photosynthesis process. We show here that under moderate light, CO2 does not diffuse across long distances because it is rapidly assimilated by photosynthesising cells.
Stability and Chaos Tests of 2D Discrete Time Dynamical System with Hidden Attractors

In this research two-dimensional dynamical system was taken. The system was analyzed through its fixed points, stability analysis, chaos diagnoses and adaptive control technique. It was found that the system had a hidden attrac-tor and unstable fixed points. The largest value of Lyapunov exponent equals 1.853981 and from binary test we get: k = 0.9305, which indicates that the system is chaotic. Adaptive control technique was performed, and it was found that the system is stable and regular after control.
Isolation, Identification, and Xanthine Oxidase Inhibition Activity of Alkaloid Compound from Peperomia pellucida

The research of the isolation and xanthine oxidation inhibition activity of alkaloid compound from Peperomia pellucida has been carried out. Alkaloid extract is isolated by column chromatography and preparative TLC. Alkaloid isolate is identified spectroscopically by UV-Vis spectrophotometer, FT-IR, and LC-MS/MS. Xanthine oxidase inhibition activity is carried out by in vitro assay. The result showed that the alkaloid isolated probably has piperidine basic structure. The alkaloid isolate has N-H, C-H, C = C, C = O, C-N, C-O-C groups and the aromatic ring. The IC50 values of ethanol and alkaloid extract are 71.6658 ppm and 76.3318 ppm, respectively. Alkaloid extract of Peperomia pellucida showed higher activity than ethanol extract.
Effect of pH and Mexican Oregano (Lippia berlandieri Schauer) Essential Oil Added to Carboxymethyl Cellulose and Starch Edible Films on Listeria monocytogenes and Staphylococcus aureus

The aim of this work was to evaluate the effect of pH and Mexican oregano essential oil (MOEO) added to carboxymethyl cellulose (CMC) and starch (S) edible films on Listeria monocytogenes and Staphylococcus aureus. CMC and S edible films were formulated with different concentrations (0%, 0.25%, 0.50%, 0.75%, and 1%) of MOEO at different pH (5, 6, or 7). Antimicrobial assay was performed. Inhibition curves were fitted to the Fermi model. Significant differences ( ) were found in tc (time to reduce 50% of microbial population) and (slope of the curve around ), being lower at acidic pH. For L. monocytogenes, CMC films exhibited a higher antimicrobial effectiveness (0.50% of MOEO) compared to S films which need a higher concentration of MOEO (0.75%). S. aureus was inhibited with CMC films at 0.50% MOEO and pH 5 and 6. Microbial modeling has allowed estimating key intrinsic factors as pH and MOEO concentration with the synergistic effect against two important food-borne pathogens.
Teorijski opis uloge premosnih mikrotubula u diobenom vretenu

During mitosis, mitotic spindle segregates genetic material into two identical daughter cells. Kinetochore microtubules in the mitotic spindle connect the chromosomes to the spindle poles and generate forces on the chromosomes via protein complexes called kinetochores. Measurements have shown that bridging microtubules are stably bound to kinetochore microtubules and in this thesis we developed physical models that clarify their role during cell division. In addition to kinetochore microtubules, bridging microtubules and kinetochores, the model includes the interaction of microtubules with the poles of the mitotic spindle and passive and active molecular motors that laterally connect kinetochore and bridging microtubules and enable their sliding and active motors that regulate dynamics of the microtubule plus ends. For the case of a system that is in metaphase, the model solutions show that active motors at the plus ends of microtubules regulate the transition of microtubules from the growing phase to the shrinking phase and thus limit the movement of kinetochores to the central third of the mitotic spindle. The model predicts that the stochastic contribution in the model provides robustness in the motion of the kinetochore for a wide range of parameters. Also, for the case of a metaphase spindle, that contains bridging microtubules, the model predicts that the kinetochores away from the center of the spindle will achieve a new stable position that correlates with the position of the bridging microtubules overlap. For the case of a system describing the mitotic spindle in anaphase, we have shown that lateral sliding between bridging and kinetochore microtubules generated by active motors located in the antiparallel microtubule bundles allows robust chromosome separation independent of forces generated at the spindle pole.
The effect of after-school extracurricular robotic classes on elementary students’ computational thinking

ABSTRACT In modern society technology is widely used and, with the digitization of many services, this is an upward trend. Therefore, computational thinking (CT) is an increasingly important concept; an aspect that is being reflected on educational policies and the extracurricular offer of different countries. This study aims to look at the efficacy of private after-school extracurricular robotics activities, controlling fluid intelligence (Gf), a determining aspect in solving novel problems. A sample of 112 fifth-grade Spanish students was chosen, who completed two tests, the computational thinking test (CTt) (Román-González, 2016) and the KBIT fluid intelligence subtest (Kaufman, 1990). The results showed a great influence of Gf on the prediction of CT and significant differences between the students that had not attended after-school extracurricular classes and those that had attended for two or more years. Thus, this study substantiates the effectiveness of private extracurricular classes in promoting CT in the long term. Given the importance of CT nowadays, legislators should consider to include CT in compulsory education because private extracurricular classes could promote inequity.
Arabic Rhetoric and Its Impact on the Quality of Translation of Literary Texts: English-Arabic

تعد البلاغة فن الخطاب الجيد، وتسهم البلاغة العربية بجمالياتها في جودة النص المترجم إلى العربية، إذ يهدف علم البيان إلى الوضوح والتأثير، وتتعدد طرائق ترجمة هذه الجماليات من لغة إلى أخرى، تبعا لفلسفة الترجمة ومقصدها، نظرا لاستخدامها الشائع وارتباطها بالأحوال اللغوية والثقافية للمجتمع. تجلي الدراسة قيمة فنون التشبيه والاستعارة والكناية، في النص الأدبي، وتتناول استراتيجيات ترجمتها، وإشكالات هذه الترجمة، والخيارات المقترحة من منظري الترجمة الأدبية لتجاوز تلك الإشكالات، مع تطبيقات نصية مترجمة من الإنجليزية إلى العربية.
Movimiento Browniano vs. Movimiento Browniano Fractal: simulación de portafolio tipo en Esquema Multifondos (ley 1328 de 2009)

Esta tesis es el estudio comparativo entre el Movimiento Browniano y el Movimiento Browniano Fractal aplicados a la gestion de portafolios en el esquema Multifondos de Fondos de Pensiones Obligatorias (Ley 1328 de 2009). El objetivo de la misma consiste en mostrar que el Movimiento Browniano sobrestima la relacion retorno/riesgo frente al Movimiento Browniano Fractal, ya que el segundo incluye el horizonte temporal como variable de medicion de riesgo. Para ello, se utilizaron series de retornos diarias de activos que representan las inversiones permitidas dentro de los limites del esquema desde el ano 2008 hasta el 2015. Se encontro que El Movimiento Browniano sobreestima la relacion retorno/riesgo en comparacion con el Movimiento Browniano Fractal. Asimismo, el Movimiento Browniano no tiene en cuenta el aumento del horizonte temporal, ya que las combinaciones de activos en el portafolio permanecen inalteradas. De acuerdo con los resultados obtenidos por el Movimiento Browniano Fractal llevados al esquema multifondos, se aconsejan combinaciones de activos mas conservadoras consistentes en una mayor participacion de activos locales de renta fija. Ademas, se recomienda la revision periodica de los limites de inversion para los diferentes fondos, teniendo en cuenta la influencia del horizonte temporal en los cambios de las series de retornos financieras.
Métrica de roteamento para prolongar o tempo de operação de redes de baixa potência e com perdas

PEREIRA, Hermano. Routing Metric to Extend the Lifetime of Low-Power and Lossy Networks. 2020. 80 p. Thesis (Doctorate in Electrical Engineering and Industrial Informatics) – Universidade Tecnológica Federal do Paraná. Curitiba, 2020. Low-power and Lossy Networks (LLNs) have gained prominence in the scientific community due to the technological paradigm of the Internet of Things (IoT). The IETF (Internet Engineering Task Force) which dedicates efforts to propose new standards for the Internet, refers to LLNs as networks that integrate with the Internet, i.e., IoT. The routing and packet delivery in LLNs represent a challenge in terms of reliability and energy efficiency. Thus, a routing protocol was designed by the IETF: the RPL (Routing Protocol for LLNs). To establish stable paths across lossy links, RPL considers the costs obtained from metrics for routing decision making. Among these, ETX (Expected Transmission Count) is the most widely used, due to reliability. However, intermediate nodes (where bottlenecks arise) are still harmed due to the rapid exhaustion, thus prompting routing efficiency further investigation. In these terms, this work sought to increase the operation time of these nodes, based on the hypothesis that the estimated energy consumption of the network interface, converted to metric cost, could extend the lifetime of LLNs and increase the packet delivery. These objectives were achieved with several experiments performed in different simulated scenarios, which ended in a new routing metric. Therefore, this document presents the NIAP (Network Interface Average Power), a promising alternative to the ETX metric, which contributes to load balancing, extends the operation time of intermediate nodes, and increases the packet delivery ratio in LLNs.
Automated Wildlife Monitoring Using Deep Learning

In many real life applications animal detection based researches are very essential. Methods for animal detection are helpful to know about the moving behavioral of targeted animal and to prevent animal intrusion that result dangerous situations in forest border area. Human animal conflict create lot of negative impact for both human and wild animal. Injury and loss of life of humans and wildlife,damage to human property,crop damage,destruction of habitat are some of the main impact of these conflict. So there is a need of developing a system which detect any presence of interactions of wild animal in the border region and without causing any harmful effect to human being and wild animal the interference and the dangerous situations caused by the wild animal have to be minimized. This paper covers various perspective of the design of such systems, including image processing and artificial intelligence for animal detection, species classification,automatic identification of animal using CNN, design of alarm unit,design of mobile application and animal repellent circuit.
Development, study of performances and integration of thermal probes for fouling characterisation of tubular heat exchangers

Ever since the end of the 1970's, heat exchangers have known some new applications linked to the need of the energy expense optimisation. Fouling of such heat exchangers is one of the main causes of thermal efficiency decrease during their use. Indeed, fouling constitutes a major economic and technological problem where complex physical phenomena occur. In spite of the efforts displayed for these last decades, the existing detection and fouling follow up devices are still far from taking into account the heat transfer and the deposit phenomena involved. Thus, we decide in our study to elaborate a thermal sensor the most possible representative of industrial conditions in order to set up an efficient cleaning programme. To this end, two original localised and technologically simple sensors associated with a data processing adapted were developed. They enable to obtain quasi instantaneous accurate information on representative parameters of heat exchangers fouling degree by disturbing only very little the conditions to which they are subjected. Although the methods developed during this study are adaptable to other configurations, we have chosen in restrictive way to work on gas side particulate fouling of tubular heat exchangers. The first sensor, using a hot source probe, enable to accurately estimate not only the convective heat transfert coefficient but also the deposit thickness from a reliable transient state estimation method. The second sensor enable to accurately estimate the convective heat transfer coefficient angular distribution as well as the one of deposit thickness from a steady state estimation method. These two devices have now to be tested under real conditions of using by a systematic study in industrial processes. They represent predictive maintenance specified tools.
The Research of Technology of Bloom Filter Realization in Hardware

Bloom filter is a space-efficient data with a certain probability of false positive . We present a reusable hardware implementation framework, define a module interface to provide users with a customize module, and introduce the constraints of hardware resources in the analysis of false positive rate against the traditional Bloom filter hardware design and analysis of the Bloom filter false positives. Finally, we make verification and analysis of our design combined with the the NetMagic platform.
Experimental calibration and implications of olivine-melt vanadium oxybarometry for hydrous basaltic arc magmas

Abstract The strong dependence of vanadium partitioning between olivine and silicate melt ( DVO1-M $\begin{array}{} D_{\text V}^{\text{O1-M}} \end{array} $) on redox conditions (fO2) can be used as sensitive oxybarometer in magmatic systems. Here we extend the experimental database on DVO1-M $\begin{array}{} D_{\text V}^{\text{O1-M}} \end{array} $, obtained so far at high temperatures (mainly above 1250 °C), to lower temperatures that are typical for island-arc basalts. Crystallization experiments were performed using a composition from Mutnovsky volcano (Kamchatka), and the investigated temperature, pressure, and oxygen fugacity ranges were 1025–1150 °C, 0.1 and 0.3 GPa, and ΔQFM of –0.5 to +3.2, respectively. The water content in melts ranged from 0.6 to ~6.5 wt% H2O. The data demonstrate a strong negative correlation between DVO1-M $\begin{array}{} D_{\text V}^{\text{O1-M}} \end{array} $ and oxygen fugacity, similar to the behavior observed previously at higher temperatures and in MgO-rich compositions. The correlation between DVO1-M $\begin{array}{} D_{\text V}^{\text{O1-M}} \end{array} $ and ΔQFM in the range from –0.5 to +3.2 is described for melts with MgO < 12 wt% and Na2O < 4 wt% at temperatures ≤1250 °C by the empirical equation: ΔQFM = −3.07−0.29+0.26log⁡DVO1-M−3.34−0.49+0.40 $\begin{array}{} -3.07_{-0.29}^{+0.26}\,\log D_{\text V}^{\text{O1-M}}-3.34_{-0.49}^{+0.40} \end{array} $ with the standard error (SE) as a function of log DVO1-M $\begin{array}{} D_{\text V}^{\text{O1-M}} \end{array} $: 2SE(ΔQFM) = –0.275log DVO1-M $\begin{array}{} D_{\text V}^{\text{O1-M}} \end{array} $ + 0.4. We suggest that this equation can be used as an oxybarometer, which is particularly well applicable to the hydrous island-arc magmas at relatively low temperature. Application of the equation to the composition of melt inclusions and their host olivine phenocrysts from basalts of Mutnovsky volcano, containing vanadium concentrations in the range of 250–370 and 4–6 ppm, respectively, reveals an oxygen fugacity in the range ΔQFM +1.9 to +2.3. The estimates are in a good agreement with olivine-spinel oxybarometry for Mutnovsky basalts and may be typical for moderately evolved island-arc magmas.
Effects of pH, chloride, bicarbonate, and phosphate on brass dezincification

Plumbing failures associated with brass dezincification have recently been reported in some areas of the United States, prompting research to identify the interplay between water chemistry and dezincification propensity. This research identified a critical pH range (8–9) at which “meringue” dezincification was problematic. In addition, the authors have refined interpretation of the classic Turner diagram by attributing beneficial effects to higher alkalinity rather than hardness (or temporary hardness). Among other findings, chloride exacerbates the dezincification propensity of water (high galvanic current/ voltage and zinc leaching) by increasing zinc solubility and decreasing pH at brass surfaces in galvanic couples to copper pipe, leading to increased weight loss and formation of corrosion products. Inhibitive effects of orthophosphate dissipated after around 100 days, calling into question the long‐term efficacy of phosphate inhibitors in mitigating brass dezincification.