Miracle-dz/UniFAR-FTUs huggingface dataset:
MARANGONI-IMPROVED MIXING IN A TWO-DROPLET SYSTEM

The study of how surface tension gradients affect the mixing of liquids is beneficial in understanding applications that involve an air-liquid interface. Our work investigates the mixing of a yellow food color (tartrazine) droplet in an ethanol (EtOH) droplet. Though studies of droplet coalescence and mixing on a plane have been carried out, the effects of the air-liquid interface and the resulting nonuniform surface tension distribution were not well understood. To fill the knowledge gap, we study the impact of surface tension gradient, or Marangoni stress, on the mixing of two droplets. Using tartrazine as the mixing material in water, we first evaluate how the mixing rate obtained from our proposed twodroplet system differs from the mixing rate that would occur if molecular diffusion alone was present. Second, we assess the impact of surface tension gradient through studying the mixing of tartrazine in various EtOH concentrations. Through a mathematical model built using COMSOL, we confirmed that varying the EtOH concentration did not impact the mixing time. Our simulation also presented a qualitative understanding of mixing rate as a function of contact angle.
Degradation of tetracycline by advanced oxidation processes: sono-Fenton and ozonation processes

In this study, ultrasound, Fenton, ozonation and their combinations were conducted to degrade tetracycline, which is extensively used in humans and animals to treat and prevent bacterial infections and has been proven to be harmful to the environment. Experimental results indicated that the effects of ultrasonic watt and reaction temperatures in sono-Fenton systems were insignificant. However, both the addition of anions and increasing the pH to a basic condition remarkably inhibited the contribution of tetracycline degradation and mineralization. The effects of ozone gas flows and pH levels on the degradation and mineralization of tetracycline were not obvious in ozonation, due to the saturated ozone concentration in solution were close with different ozone gas flows, but they were significantly affected by the change of solution toxicity, as defined by the profiles of cell viability. As the ozonation was combined with ultrasound or/and Fenton, the required treatment durations were shortened, and the mineralization efficiencies were enhanced. Hence, operation costs were also reduced by the combination of ultrasound, Fenton and ozone. The maximum tetracycline degradation efficiency in the ultrasound/Fenton/O3 process was as high as 99.8%, followed by 65% mineralization, which revealed that the ultrasound/Fenton/O3 method synergistically increased the mineralization of refractory compounds; additionally, the toxicity of the treated tetracycline solution significantly decreased, whereas the cell viability increased from <50% to 94%.
Particle swarm optimization tuned fuzzy terminal sliding mode control for UPS inverters

This paper proposes a particle swarm optimization algorithm tuned fuzzy terminal sliding mode control for the application of UPS inverters. Though classic sliding mode control (SMC) is insensitive to system uncertainties, it possesses an infinite system-state convergence time. For high-accuracy tracking control, a terminal sliding mode control (TSMC) is developed to provide a finite system-state convergence time. However, difficult estimation occurs in TSMC, and incurs high UPS inverter voltage harmonics and slow dynamic response. To obtain high-quality UPS inverter output voltage, a fuzzy logic (FL) with a computationally simple and practically easy estimator is integrated into TSMC to resolve system uncertainties. Simultaneously, the particle swarm optimization (PSO) algorithm is applied to optimally tune the control gains of the TSMC with a fuzzy estimator. Results indicate that the presented combination of PSO, FL and TSMC yields a closed-loop UPS inverter with good performance under various loading conditions. Simulation and experimental results indicate that the proposed control can achieve low total harmonic distortion (THD) under nonlinear loading conditions and fast dynamic response under transient loading conditions.
Synthesis and Characterization of Methacrylated Eugenol as a Sustainable Reactive Diluent for a Maleinated Acrylated Epoxidized Soybean Oil Resin

This work presents a solvent-free, facile synthesis of a renewable, aromatic monomer, methacrylated eugenol (ME), from eugenol and methacrylic anhydride by the Steglich esterification reaction. The resulting ME was subsequently used as a reactive diluent to copolymerize with a commercial maleinated acrylated epoxidized soybean oil (MAESO) resin to form renewable MAESO-ME thermosets. The volatility of ME was examined, along with an analysis of viscosity and curing behavior of the MAESO-ME mixtures. The curing kinetics, thermo-mechanical properties, and thermal stabilities of the fully cured MAESO-ME thermosets with different ME proportions (0, 20, 40, 60, 80, and 100%) were systematically investigated. The results indicated that ME monomer exhibited extremely low volatility (less than 3% mass loss after being held isothermally at 30 °C for 10 h), high bio-based carbon content (BBC, 71.4%), and low viscosity (17.6 cP at 25 °C). When used with MAESO resin, viscosity of the system was considerably decreased.
Graphene‐based ternary composites for supercapacitors

The research on electrode materials for supercapacitor application continues to evolve as the request of high‐energy storage system has increased globally due to the demand for energy consumption. Over the past decades, various types of carbon‐based materials have been employed as electrode materials for high‐performance supercapacitor application. Among them, graphene is 1 of the most widely used carbon‐based materials due to its excellent properties including high surface area and excellent conductivity. To exploit more of its interesting properties, graphene is tailored to produce graphene oxide and reduced graphene oxide to improve the dispersibility in water and easy to be incorporated with other materials to form binary composites or even ternary composites. Nowadays, ternary composites have attracted enormous interest as 2 materials (binary composites) cannot satisfy the requirement of the high‐performance supercapacitor. Thus, many approaches have been employed to fabricate ternary composites by combining 3 different types of electroactive materials for high‐performance supercapacitor application. This review focuses on the supercapacitive performance of graphene‐based ternary composites with different types of active materials, ie, conducting polymers, metal oxide, and other carbon‐based materials.
Electrostatic MEMS vibrational energy harvester with large bandwidth for biomedical applications

Present work addresses question of MEMS capacitive vibrational energy harvesting for biomedical applications, and notably for powering an autonomous leadless pacemaker system. Such an application imposes several critical requirements upon the energy harvesting system, notably the sufficient miniaturization (<1cm³), power output in range of 1-10 µW, compatibility with Magnetic Resonant Imaging (MRI). This work addresses a problematic of MEMS energy harvester design, simulation, fabrication and characterization fulfilling such a requirement. Moreover, a gravity effect is studied and taken into account in the conception of the device to ensure the power output at various orientations of the harvester. To attain a heartbeat frequencies (1-50 Hz) and acceleration amplitudes (<1g), the use of nonlinear springs is proposed. A nonlinear stiffness is implemented in original way of introducing a natural bending mode shapes in the initial beam form. A mechanical description of bending mode coupling along with its impact on a reaction force of the suspension springs is presented. An innovative clean room technology based on silicon-on-glass (SOG) wafers is developed for the fabrication of the innovative energy harvesters with high width-to-depth aspect ratio. A straightforward and rapid low-temperature process with the possibility of future industrialization is validated by multiple experimental realizations of miniaturized MEMS energy harvesters. Fabricated microsystems are tested mechanically and electrically. Proposed theoretical model of the curved beam is validated with reactive force measurements of the MEMS springs. Energy harvesting experiments are performed for both harmonic and heartbeat mechanical excitations, which demonstrate the large bandwidth in low frequencies domain and a sufficiently large state-of-the-art power output for envisaged application under different orientations with respect to the gravity.
Tf2NH-Catalyzed 1,6-Conjugate Addition of Vinyl Azides with p-Quinone Methides: A Mild and Efficient Method for the Synthesis of β-Bis-Arylamides

Abstract Tf2NH-catalyzed tandem 1,6-conjugate addition/Schmidt type rearrangement using vinyl azides and p-quinone methides to access a variety of β-bis-arylated amides is reported. The method is quick, efficient, mild, and high yielding with broad substrate scope.
Effect of Calcination Temperature on Hydrogen Production via Ethanol Dry Reforming Over Ni/Al2O3 Catalyst

Ni/Al 2 O 3 catalysts were prepared by the wet-impregnation method and calcined at different temperatures (500°C, 600°C and 700°C) to obtain NiAl-1, NiAl-2 and NiAl-3 respectively. NiAl-1, NiAl-2, NiAl-3 represent catalysts calcined at 500°C, 600°C and 700°C respectively. The catalysts were characterized using different techniques, XRD, BET and TGA. XRD results revealed the presence of NiO phase on all the catalysts during calcination, however, the presence of spinel, NiAl 2 O 4 , was more pronounced on the catalyst calcined at 600°C (i.e. NiAl-2), indicating the existence of strong metal-support interaction. BET results showed that NiAl-1 has the highest surface area of about 190cm 2 /g. All the catalysts were tested for ethanol dry reforming in a tubular stainless steel fixed-bed reactor at 700°C and CO 2 /ethanol ratio of 3 under atmospheric pressure and were evaluated in terms of reactants conversion and selectivity of H 2 to see the effect of the different calcination temperatures on the catalysts’ activities. Ethanol conversion was 100% for all the three catalysts and NiAl-2 has the highest CO 2 conversion with an average value of about 57%. The three catalysts have almost the same performance in terms of H 2 selectivity. The presence of multi-walled carbon nanofibers (MWCNFs) were confirmed on all the catalysts as revealed by the TGA result. The catalyst calcined at 600°C (i.e. NiAl-2) displayed the best relative catalytic activity
Ciclagem de nutrientes em ecossistemas de pastagens tropicais

The degradation of Brazilian pastures has been an increasing problem, especially in agricultural frontier regions, where the management practices adopted are inadequate, causing an imbalance in this ecosystem. Management practices that favor nutrient cycling appear in this scenario as an alternative for the recovery of degraded pastures. In the case of pastures, the largest reservoirs of nitrogen (N) and carbon (C) are the atmosphere, soil, plant species and grazing animals, being that the dynamics of these nutrients is controlled by biotic and abiotic factors. The litter and the animal excreta represent the main routes of return of the nutrients to the ecosystem through the decomposition by microorganisms. The use of legume species intercropped with pasture is a good strategy to increase soil nitrogen content, minimizing costs with nitrogen fertilization, in addition to improving the quality of the litter.
The Role of Microstructure and Surface Finish on the Corrosion of Selective Laser Melted 304L

Thecorrosionbehaviorofselectivelasermelted(SLM)304Lwasinvestigatedandcomparedtoconventionalwrought304Linaqueouschlorideandacidicsolutions.Throughimmersedelectrochemicaltestingandexposureinacidicsolutions,theSLM304Lexhibitedsuperiorpittingresistanceinthepolishedstatecomparedtowrought304L.However,thesurfaceconditionoftheSLMmaterialhadagreatimpactonitscorrosionresistance,withthegrit-blastedconditionexhibitingseverelydiminishedpittingresistance.Localscale,capillarymicro-electrochemicalandscanningelectrochemicalmicroscopyinvestigations,identiﬁedporosityasacontributingfactortodecreasedcorrosionresistance. PreferentialcorrosionattackwasnotobservedtoberelatedtothecharacteristicunderlyingcellularmicrostructureproducedthroughSLMprocessing.ThisstudyhighlightstheeffectsofSLMmicrostructuralfeaturesoncorrosionresistance,speciﬁcallythesubstantialinﬂuenceofsurfaceﬁnishonSLMcorrosionbehaviorandtheneedfordevelopmentandoptimizationofprocessingtechniquestoimprovesurfaceﬁnish. ©TheAuthor(s)2018.PublishedbyECS. ThisisanopenaccessarticledistributedunderthetermsoftheCreativeCommonsAttributionNon-CommercialNoDerivatives4.0License(CCBY-NC-ND,http://creativecommons.org/licenses/by-nc-nd/4.0/),whichpermitsnon-commercialreuse,distribution,andreproductioninanymedium,providedtheoriginalworkisnotchangedinanywayandisproperlycited.Forpermissionforcommercialreuse,pleaseemail:oa@electrochem.org. [DOI:10.1149/2.0431805jes]
Temperature Characteristics of the Methanogenesis Process in Anaerobic Digestion

Experiments using high concentration of the major intermediates of anaerobic digestion were conducted with anaerobic chemostat-type reactors to investigate the temperature characteristics of the methanogenesis process. Temperature ranging from 15°C to 50°C were studied. The optimum temperature was 35°C. The methane production was temperature and loading rate dependent. Bacilli were the predominant microbial species and this predominance was independent of digestion temperature. At the mesophilic range, with increasing temperature the saturation constant (Ks) decreased, while the maximum specific substrate utilization rate (vmax) and growth yield (Yg) increased. Their temperature characteristics were described using exponential expressions. For retention times longer than 8 days, the process progressed normally and satisfactorily even at 25°C, and the substrate removal efficiency was more than 96% which was the same as that at 35°C. At the temperature range of 25°C to 35°C, the simulation model is ! [Formula][1] [1]: /embed/graphic-1.gif
Determination of Calcium Dobesilate by Differential Pulse Voltammetry at a Disposable Pencil Graphite Electrode

ABSTRACT The electrochemistry of calcium dobesilate was investigated by recording cyclic and differential pulse voltammograms at a disposable and inexpensive pencil graphite electrode (PGE). Cyclic voltammograms of calcium dobesilate recorded in 0.1 M HCl showed a pair of well-defined redox peaks at the PGE indicating excellent electrochemical activity. The oxidation peak current of the calcium dobesilate was used for its determination by recording its differential pulse voltammograms. The anodic peak current increased linearly with the concentration of calcium dobesilate in the range from 0.2 to 100 µM with a detection limit 0.065 µM. Relative standard deviations of 2.0 and 1.1% for innerday and 3.6 and 2.0% for intraday precision were obtained for three successive determinations of 0.5 and 10 µM calcium dobesilate, respectively, which indicates acceptable repeatability and reproducibility. This voltammetric method was also successfully applied to the direct determination of calcium dobesilate in pharmaceutical samples. The effect of various interfering compounds on the calcium dobesilate peak current was studied. Thus, an unmodified PGE provides a new, promising, and alternative method of achieving sensitive, inexpensive, and selective determination of calcium dobesilate.
Growth of Single-Walled Carbon Nanotubes by Disproportionation of CO Over Co-Re/SiO2 Catalysts

A series of silica supported Co-Re catalysts was prepared and used as catalysts for the synthesis of single-walled carbon nanotubes (SWNT) by carbon monoxide disproportionation at 750 – 950 °C. The characterization of catalysts suggests that good quality of SWNT was obtained from partially reduced and completely reduced cobalt-rhenium oxide. The carbon products were characterized by Raman spectroscopy, temperature programmed oxidation (TPO) and transmission electron microscope (TEM). The effects of reaction parameters such as molar ratio of Co to Re, reduction temperature, and reaction temperature were investigated. It was found the the synergism of Co and Re in the catalytic production of SWNT leads to high selectivity of SWNT.
High-frequency monitoring of stream water physicochemistry on sub-Antarctic Marion Island

Given the remoteness and challenging environmental conditions on sub-Antarctic Marion Island, continuous high-resolution studies of the island’s natural water systems are rare. Subsequently, current understanding of the island’s hydrochemistry is based entirely on manual point-based measurements. To address this research gap we analysed continuous, in-situ highfrequency physicochemical measurements (pH, water temperature, dissolved oxygen (DO), and electrical conductivity (EC)) from the Soft Plume River over the period 21 April 2015–26 April 2015. We observed a sharp, short-term response from all measurements to a precipitation event that was superimposed on consistent but subtle diel (i.e. 24 h) cycles throughout the study. Total variation in pH and electrical conductivity amounted to 1.3 units and 27.7 μS/cm respectively. Stream water temperature was less variable (6.2°C) than air surface temperature (14.2°C). Total variation in DO was 2.0 mg/L. Aside from the precipitation-induced response, diel oscillations were small and only visible through the use of continuous, highresolution monitoring. Findings highlight the advantages of continuous high-frequency monitoring in capturing the range of daily variation and elucidating diel cycles in stream water physicochemistry on sub-Antarctic Marion Island that have not previously been accounted for. Keywords : diurnal, diel cycles, in situ, Marion Island, sub-Antarctic
Copy-move forgery detection of duplicated objects using accurate PCET moments and morphological operators

ABSTRACT This paper presents a new method for copy-move forgery detection of duplicated objects. A bounding rectangle is drawn around the detected object to form a sub-image. Morphological operator is used to remove the unnecessary small objects. Highly accurate polar complex exponential transform moments are used as features for the detected objects. Euclidian distance and correlation coefficient between the feature vectors are calculated and used for searching the similar objects. A set of 20 forged images with duplicated objects is carefully selected from previously published works. Additional 80 non-forged images are edited by the authors and forged by duplicating different kinds of objects. Numerical simulation is performed where the results show that the proposed method successfully detect different kinds of duplicated objects. The proposed method is much faster than the previously existing methods. Also, it exhibits high robustness to various attacks such as additive white Gaussian noise, JPEG compression, rotation, and scaling.
Growth and Osteogenic Differentiation of CD117+ Dental Pulp and Periodontal Ligament Cells

BACKGROUND: Dental pulp stem cell (DPSC) and periodontal ligament stem cell (PDLSC) have been suggested as valuable seed cells for bone engineering, suggesting that both stem cells are potential osteogenic sources. Since DPSC and PDLSC seem like to have similar potential in bone formation, we conducted a study to compare morphology, immunophenotype and cell growth of DPSC and PDLSC isolated from the same teeth. METHODS: Human dental pulps and periodontal ligaments were obtained from freshly extracted partial impacted third molar teeth. Collected samples were digested with type I collagenase. Resulted cell suspension was washed and cultured. For biomarker identification, the cells were fixed and bound with anti-fluorescein isothiocyanate (FITC)-cluster of differentiation (CD)117 antibody. For cell growth quantification, 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay was used. Meanwhile for osteogenic differentiation, the cells were cultured in osteogenic medium for 1-3 weeks, fixed and stained with alizarin red. RESULTS : Morphology of dental pulps cell (DPC) and periodontal ligament cell (PDLC) in passage 5 was similar. Clear CD117 green fluorescence of DPC and PDLC in passage 5 was observed. Cell growth rate of PDLC was higher than the one of DPC, 0.3858 and 0.3848 respectively. DPC formed bone nodule on the third week culture in osteogenic medium, while PDLC showed bone nodule formation on the second week culture. CONCLUSION : We suggest that DPC and PDLC are potential seed cells for osteogenic regeneration, since they had cell growth capacity and osteogenic differentiation, particularly PDLC that had faster osteogenic differentiation. KEYWORDS: dental pulp, periodontal ligament, cell, growth, osteogenic differentiation
Bisexual and Pansexual Identities: Exploring and Challenging Invisibility and Invalidation

This book draws on psychological and social sciences research to offer a unique and in-depth exploration of the in/visibility of sexualities. It evidences how early sexologists understood sexuality within a binary model which provided the underpinnings of bisexual invisibility. Sexologists and psychologists have often overlooked bisexuality which has contributed to the ongoing erasure and invisibility of bisexual people and their identities. The text also focuses on individual and cultural in/visibility and offers a contemporary account of the in/visibility of bisexuality, pansexuality, and asexualities within education, employment, mainstream mass media, and the wider culture. The book concludes with a discussion of the limited ways in bisexuality, pansexuality, and asexuality have become somewhat more visible than in the past. This unique book is the first to extend discussions of invisibility beyond bisexuality to include contemporary identities. It will be particularly useful for students and scholars who have an interest in bisexuality, pansexuality, and asexual spectrum identities. The accessible approach means it will also be of interest to anyone with a personal interest in finding out more about bisexuality, pansexuality, and asexuality.
Variability, Correlation and Path Analysis in Advanced Generation of Aromatic Rice

The scented rice has a unique position in international market but they are very low yielders in general condition. So it is very much essential to improve the yield to get a premium price in international market. The grain yield is a complex character and its expression depends upon its component characters. The knowledge on the association between yield and its component characters and their direct and indirect impact on grain yield will be helpful for the improvement of grain yield. So the present was undertaken to understand the association among yield and its component characters along with the nature and extent of direct and indirect effects of yield components on yield through correlation and path analysis in scented rice.