Miracle-dz/UniFAR-FTUs huggingface dataset:
APISAT 2014 Atomization Performance Study of a Fuel Injector in IGC by Experimental and Numerical Investigation

Fuel spray and atomization characteristics play an important role in the performance of internal combustion engines. Experimental and numerical atomization studies of the fuel injector used in IGC (Inner Guide-vane Combustor) under various assembly and operation conditions have been performed in order to determine the configurations of the fuel injector proposed for use in IGC. Droplet Sauter Mean Diameter (SMD) distributions were measured with Phase Doppler Analyzer (PDA) at different operating conditions and used to evaluate the atomization performance. Computational Fluid Dynamic (CFD) study has also been conducted based on Discrete Particle Model (DPM). Current work examines optimizing the atomizer location and assembly condition of these vanes and the cavity within them. Results reveal that the distribution of droplet SMD varies with the assembly and operation condition. The further results showed that fuel injector used in IGC with single slot, forward injection direction and ‘<’ shaped backsplash type can get the best atomization performance compared with other cases tested © 2014 The Authors. Published by Elsevier Ltd. Peer-review under responsibility of Chinese Society of Aeronautics and Astronautics (CSAA).
The impact of information technology and knowledge-oriented management on the operational effectiveness in Polish hospitals / Wpływ technologii informacyjnych i zarządzania zorientowanego na wiedzę na efektywność działalności polskich szpitali

The aim of this paper was to present the results of an evaluation of the effect of knowledge-oriented management and level of information technology on the operational effectiveness in Polish hospitals. The data were collected using a questionnaire survey carried out among managers in Polish hospitals. Structural modelling was employed to analyse the data collected. The structural model proposed in the study turned out to fit the data very well, thus demonstrating the positive and cause-and-effect correlations between the level of IT, knowledge-oriented management and operational effectiveness in Polish hospitals.
Numerical and experimental analysis of the wake behavior of a generic submarine propeller

The performance and fluid dynamics of a submarine propeller, running in open water conditions, was investigated using experimental and computational methods. The flow velocity was measured using Laser Doppler Velocimetry (LDV) and it was computed using Large Eddy Simulation (LES). The wake dynamics were investigated mainly by studying the velocity field in three transversal planes of the wake, at three loading conditions. The experimental results were also used to validate the accuracy of the simulations for the most important flow features.
Delivering MC 3 T 3E 1 cells into injectable calcium phosphate cement through alginate-chitosan microcapsules for bone tissue engineering *

Objective: To deliver cells deep into injectable calcium phosphate cement (CPC) through alginate-chitosan (AC) microcapsules and investigate the biological behavior of the cells released from microcapsules into the CPC. Methods: Mouse osteoblastic MC3T3-E1 cells were embedded in alginate and AC microcapsules using an electrostatic droplet generator. The two types of cell-encapsulating microcapsules were then mixed with a CPC paste. MC3T3-E1 cell viability was investigated using a Wst-8 kit, and osteogenic differentiation was demonstrated by an alkaline phosphatase (ALP) activity assay. Cell attachment in CPC was observed by an environment scanning electron microscopy. Results: Both alginate and AC microcapsules were able to release the encapsulated MC3T3-E1 cells when mixed with CPC paste. The released cells attached to the setting CPC scaffolds, survived, differentiated, and formed mineralized nodules. Cells grew in the pores concomitantly created by the AC microcapsules in situ within the CPC. At Day 21, cellular ALP activity in the AC group was approximately four times that at Day 7 and exceeded that of the alginate microcapsule group (P<0.05). Pores formed by the AC microcapsules had a diameter of several hundred microns and were spherical compared with those formed by alginate microcapsules. Conclusions: AC microcapsule is a promising carrier to release seeding cells deep into an injectable CPC scaffold for bone engineering.
Modeling of slow strain rate corrosion testing of austenitic stainless steel through continuum damage mechanics

Slow strain rate testing is widely used on stress corrosion cracking research as the basic experimental technique to promote the incidence of cracking and to determine the ranking of susceptibility of different alloys in several corrosive environments. With this methodology, however, the assessment of "threshold values" to be used as design parameters is not a simple task in the present state of art of the corrosion area. This limitation induces the use of the SSR testing as "go-no go" test for materials selection and some basic information required, for instance, time to failure in service, can not be inferred by this approach. The most important reason for the limitation described is the complexity of stress corrosion mechanism that involves the conjoint action of mechanical and electrochemical processes. On the present work, a methodology for modeling SSR testing based upon thermodynamics of continuum solids and elasto-plastic damage is proposed. In this macroscopic approach, besides the classical variables (stress, total strain, plastic strain), an additional scalar variable related with the damage induced by stress corrosion is introduced. An evolution law with environment dependent parameters is proposed for this damage variable. The model accounts for the stress corrosion effect through a reduction of the mechanical resistance of the material induced by the damage variable. The model prediction is compared with the curves obtained experimentally in different acid solutions at room temperature showing a good agreement. The alloy/environments system is 304 austenitic stainless steel/acid chloride solutions.
REGION DETECTION AND DEPTH LABELING ON KINECT STREAMS

Although Kinect was designed as a gaming tool, in the last few years studies have shown that this sensor can be used for real-time environmental scanning, segmentation, classifications and scene understanding. Our approach, based on using Kinect or any other similar device, gathers depth and RGB data from the sensors and processes the information in near real time. The purpose is to divide the data into distinct regions based on depth and colour and then calculate the distance for each detected area (depth labelling). To achieve performance in many real situations involving humans, compared to other existing segmentation or depth calculation solutions, right from the beginning, we considered the fact that humans are different than objects. Most of the objects are static and thus, they are less likely to change their dimensions and localization into every frame. We propose a method where regions are detected by merging 2 different segmentation methods: human detection using skeletal tracking and RANSAC algorithm as a method for object detection. Our experimental results are showing that the solution running on a mobile device (notebook) works with a humble improvement of maximum 7% compared to the RANSAC object detection method.
Türkiye Validity and Reliability of the QIDS-SR 16-Turkish in Comparison with BDI-II-Turkish Among Young Outpatient Sample of Turkish University Students

Uludağ Üniversitesi Aile Sağlığı Merkezi, Bursa, Türkiye *Celal Bayar Üniversitesi Tıp Fakültesi, Manisa, Türkiye **İzmir Tepecik Eğtim ve Araştırma Hastanesi, Aile Hekimliği, İzmir, Türkiye Validity and Reliability of the QIDS-SR16-Turkish in Comparison with BDI-IITurkish Among Young Outpatient Sample of Turkish University Students Hızlı Depresif Belirti Envanteri-Özbildirim Formu’nun (HDBE16-ÖF) Beck Depresyon Envanteri-II ile Karşılaştırılarak Ayaktan Başvuran Hastalarda Geçerlilik ve Güvenilirliği Research Article / Araştırma Makalesi 1
TEMPERATURE DEPENDENCE OF CURRENT-VOLTAGE CHARACTERISTICS OF Al / Pt-DOPED Si SCHOTTKY DIODES

We have investigated the current–voltage (I–V) characteristics of Aluminum (Al) Schottky contacts on undoped and platinum (Pt)-doped FZ n-Silicon(Si) in the temperature range of 300-420 K. The I–V analysis based on thermionic emission (TE) theory shows the value of the Schottkty barrier height and ideality factor were varied from 0.63 eV and 0.98 at 300 K to 0.56 eV and 0.75 at 420 K, respectively. It is observed that the decrease of  and  with increase of temperatures. These parameters were correlated to the defect levels generated by the Pt in Si. This high value of the  shows that Pt in Si creates donor levels in the energy gap that compensate electrons to reduce the conductivity of the material.
The Role of Social Perceptions , Beliefs , and Emotions on Support for Punitive Action toward Drug Dealers and Users

Public attitudes toward drug sellers/pushers and users have generally been negative (i.e. Bryan, Moran, Farrell, & O’Brien, 2000; McCorkle, 1993; World Health Organization, 2003) and there is significant support for their harsh punishment (McCorkle, 1993). However, research in punitiveness has not extensively explored the impact of social perceptions (i.e. perceived support for the president, perceived endorsement of harsher measures, beliefs on the country’s state visà-vis the drug trade, and perceived relationship between drugs and crime), emotions (i.e. hope, compassion, anger, hatred, and fear), and other cognitive factors (i.e. dehumanization and redeemability) on people’s punitiveness toward drug sellers/pushers and users. To address this dearth, two online surveys conducted with differing target objects (viz. drug sellers/pushers vs. drug users) were answered by a total of 436 participants. Hierarchical regression analyses indicate that, when the target objects were drug sellers/pushers, support for punitive action was positively influenced by personal support for the president, perceived endorsement by the president of harsher measures, perceived relationship between drugs and crime, anger and hatred but negatively affected by compassion and redeemability. When punitiveness toward drug users was the issue, the significant predictors were personal support for the president, perceived relationship between drugs and crime, and hatred. Compassion, however, had a negative impact on punitiveness toward drug users. Implications on punitiveness research were discussed.
PPARG genotypes are not a major modifiers of chronic kidney disease progression among the diabetic nephropathy patients

Introduction Diabetic nephropathy (DN), classically described by the presence of proteinuria, is one of the major late microvascular complications of type 1 and type 2 diabetes and leading to a decline in renal function (1). In fact, epidemiological studies have linked DN with longstanding severe hyperglycemia and its complications such as production of advanced glycation end products, reactive oxygen species, anomalous activation of signaling cascades (protein kinase C) and abnormal stimulation of hemodynamic regulation systems (2). Hence the etiology of DN is multifactorial, including both genetic and environmental factors. The variability seen in the incidence and prevalence of DN corresponds with multi-genetic predisposition to the development of DN. Although the role of genetic susceptibility to the development of DN is evidenced by family aggregation (3), no major gene locus that contributes to its susceptibility has yet been identified (4). Peroxisome proliferator-activated receptor gamma (PPARγ) is an important transcription factor for lipid and glucose metabolism. PPARG mRNA has been identified in renal medullary collecting duct, renal glomeruli and renal micro-vasculature (5). PPARG is known to modulate insulin resistance, blood glucose, blood pressure, plasma adiponectin level, circulating non-esterified fatty acid and insulin-desensitizing cytokines (6-10). PPARG is involved in renal hemodynamic and water and sodium transport. As PPARG shows renoprotective effects, the PPARG agonists have been evaluated for their renoprotective effects using animal models of diabetes and chronic kidney diseases (CKDs).
BINARY MIXTURE OF CYANEX 921 AND CYANEX 923 AS EXTRACTANT FOR PRASEODYMIUM (III) AND NEODYMIUM (III)

Solvent extraction of praseodymium (III) and neodymium (III) from an acidic nitrate medium was carried out using a binary mixture of Cyanex 921 and Cyanex 923 in kerosene. The extraction was found to decrease with acid concentration increase. The extraction of Pr (III) using 0.1 M Cyanex 921 or 0.5 M Cyanex 923 was 95 %, while that of Nd (III) with a binary mixture of 0.1 M Cyanex 921 and 0.1 M Cyanex 923 was 99 %. The composition of the extracted species was determined on the basis of the slope analysis as M(NO3)3.nCyanex 921.Cyanex 923. M in the later stood for Pr 3+ and Nd3+, while n was equal to 1 for Pr3+ and 2 for Nd3+. The temperature increase had a negative impact on the extraction process. The stripping with 0.01 M HCl and 0.05 M H2SO4 was 100 % in case of recovery of Pr (III) from the loaded organic phase of 0.1 M Cyanex 921 and 0.5 M Cyanex 923, whereas 0.008 M HCl and 0.02 M H2SO4 were found effective for cent percent recovery of Nd (III) from the loaded organic phase of 0.1 M Cyanex 921 and 0.1 M Cyanex 923 in kerosene.
heoretical analysis of graphene plasmon cavities

Unprecedented physical properties make graphene a very promising plasmonic candidate material from the terahertz to mid-infrared frequencies. However, a theoretical model for graphene plasmon cavities has not been fully established. In this work, we analyse the graphene surface plasmon polaritons supported on silicon carbide or metallic cavities. We derive an analytical expression for the dispersion relation of graphene plasmon waves in a multilayer system, providing a useful tool to illustrate the dependence on the cavity’s geometric properties. The results show that the analytical description can precisely predict the excitation of cavity graphene plasmon waves. Complete absorption can be achieved under certain parameters, which can be predicted precisely using two Fabry–Pérot models. We further show that the interaction of surface plasmon polaritons with surface phonon polaritons can be used to tune
NUMERICAL SIMULATION OF PRESSURE DISTRIBUTION AROUND A HETEROGENEOUS NUCLEATION SITE

Pressure is a critical parameter that affects the degree of supersaturation within a polymer-gas solution when foaming. In most previous studies on cell nucleation, a uniform pressure throughout the solution was assumed. Although this assumption may be acceptable when no nucleating agent has been added, its validity is questionable when nucleating agents are present. The discontinuity at the interface between the nucleating agent and surrounding material is a potential heterogeneous nucleation site, and so the stress field around a particle will be different from the bulk. In light of this, this paper presents a numerical analysis to investigate the pressure profile around cell nucleating agents. Such an investigation is expected to provide new insights to understand cell nucleation phenomena.
In situ Synchrotron X-ray Measurement of Strain Fields near Fatigue Cracks grown in Hydrogen

The embrittlement and enhanced fatigue crack growth rate of metals in the presence of hydrogen is a long-standing problem [1-5]. In an effort to determine the dominant damage mechanism behind hydrogen-assisted fatigue crack growth, we performed high-energy X-ray diffraction (HEXRD) measurements to characterize the strain fields near cracks grown both in air, as well as in a hydrogen environment. An enhancement in the magnitude and spatial extent of the strain field near the crack grown in hydrogen compared with the strain field near the crack grown in air was observed. We discuss the differences between the measured in-air and inhydrogen crack-tip strain fields in the context of the two leading damage mechanisms proposed in the literature. Introduction Proposed mechanisms of hydrogen embrittlement include hydrogen-enhanced decohesion (HEDE) and the hydrogen-enhanced localized plasticity (HELP) [6-10]. In the HEDE mechanism, decohesion occurs either through a weakening of Fe-Fe bonds (“intra-lattice” decohesion) or from a buildup of hydrogen at grain boundaries (“inter-lattice decohesion”). In the HELP mechanism, the introduction of hydrogen gas leads to failure through localized plastic deformation from enhancement of dislocation mobility in the steel framework. Quantifying strain fields from fatigue cracking is crucial to the understanding of the underlying mechanism(s) behind hydrogen embrittlement (HE) and to the study of HE and hydrogen-assisted fatigue crack growth rate (HA-FCGR). For example, a measurement of the strain field ahead of a crack tip can directly confirm predictions from the HEDE mechanism of intra-lattice decohesion. The synchrotron source available at Argonne National Laboratory’s Advanced Photon Source (APS) and its HEXRD technique on the 1-ID beamline are useful tools for probing the strain field ahead of cracks grown in hydrogen. The use of a 2D detector and short X-ray wavelengths allows for the simultaneous measurement of the two in-plane strain components in the planar, compact tension ( C(T) ) specimen geometry commony used for FCGR measurements. The load frame available at APS for mechanical testing is capable of fatigue cycling up to 10 Hz, which allows a full FCGR test to be performed within a single awarded beam time. Further, high energy X-rays have high flux and high penetration through sample chamber materials, which allow for in situ measurements. For HE and HA-FCGR studies, in situ measurements are crucial because of the rapid diffusion of hydrogen out of ferritic steels. Even after extended exposure to hydrogen, the deleterious effect of hydrogen on ferritic steels after the specimen has been removed from the hydrogen environment for just a short period of time (~ 15 min) [7]. Therefore, in order to fully understand the HA-FCGR mechanism, it is necessary to perform any measurements in situ. MECA SENS 2017 Materials Research Forum LLC Materials Research Proceedings 4 (2018) 17-22 doi: http://dx.doi. org/10.21741/9781945291678-3
Efficient Asynchronous Resampling of Audio Signals for Spatial Rendering of Mirror Image Sources

In this article we present a computationally efficient resampling method for rendering mirror image sources. In a first stage, the proposed sample-frequency converter transforms the input signal into a parameter space, in which a second stage can compute sub-sample values with few operations. For this, we propose transforming the oversampled input signal into a sequence of polynomial coefficients and a Farrow structure for the implementation of the second stage. Introduction Mirror image models are widely used for auditory virtual environments (AVEs) to render early reflections. Among other things, the simulation of this early reverberation takes the sound propagation delay of the mirror image sources into account. For a moving receiver or moving sound sources, the propagation delays are a function of time. An asynchronous sample-frequency converter can be used to implement this variable propagation delay and thus can also take the Doppler shift into account. Although the Doppler shift may be below the perception threshold for slow movements, an asynchronous resampling of all mirror image signals is necessary to avoid processing artifacts. Such artifacts occur when a block-based signal processing model is used and the propagation delay is determined only once per block. Signal Distortion For the implementation of the fractional delay a variety of interpolation methods exists [1, 2, 3, 4, 5]. Interpolation based on Lagrange polynomials provides a good compromise between signal distortion, computational complexity, and implementation effort for the intended system [2]. Signal distortion is caused by the interpolation filter and can be quantified for a sinusoidal signal sf with frequency f and the interpolated output signal ŝf by the signal-to-noise ratio Sf Nf = 10 log 10 E ̆ s2f ̄ E ̆ (sf − ŝf ) ̄ . (1) This formula can be evaluated for uniformly distributed subsample positions λ and phases φ by integration over all phases and all sub-sample positions. We approximate the signal-tonoise ratio for 3 order Lagrange interpolation by Sf Nf ≈ 10 log 10 LM L X
MODIFICATION OF A COPPER TAILINGS FOR IMPROVED WATER RECOVERY

Efficient water recovery is a key issue for mining, especially in arid and semi-arid environments. Klohn Crippen recently carried out a water reclamation study for a copper tailings facility located in a desert region. Material characterization revealed that the main cause of poor water release from the tailings was high clay content and the associated bookhouse fabric of the clay that retains pore water. To improve water release from the tailings, laboratory scale test work focused on modifying the soil fabric using mechanical and chemical methods. This paper presents self-weight settling tests for the copper tailings with the addition of sand and sodium hexametaphosphate (SHMP). Test data are studied in conjunction with inherent soil properties: tailings gradation, pore water chemistry, and the resulting microstructure. Results indicate possible improvements in water recovery of up to 56% for sand addition and up to 91% for SHMP addition. RÉSUMÉ Dans le secteur minier l’extraction de l’eau dans les déchets est très importante, spécialement pour les régions désertiques et semi-désertiques. Récemment, Klohn Crippen a fait une étude sur l’assèchement de déchets produits par l’extraction du cuivre dans une région désertique. Des tests sur ce matériel ont révélé que le bas niveau d’assèchement est principalement dû à la haute concentration d’argile et à la structure en ‘‘château de carte’’ de l’argile qui retient l’eau dans les déchets miniers. Des tests en laboratoire ont été exécutés en se concentrant sur la modification des déchets miniers, en ajoutant des méthodes tant mécaniques que chimiques pour augmenter leurs capacités d’assèchement. Ce rapport démontre la façon dont les déchets miniers de cuivre se dépose par gravité en utilisant du sable et du sodium hexametaphosphate (SHMP). Les résultats de tests ont été étudiés en conjonction avec les propriétés existantes du sol: gradation des déchets miniers, la chimie de l’eau dans les pores, et la microstructure finale des déchets. Les résultats indiquent des améliorations de l’assèchement du sol jusqu’à 56% en ajoutant du sable et jusqu’à 91% avec en ajoutant du SHMP.