Miracle-dz/UniFAR-FTUs huggingface dataset:
Assessment of potential source regions of PM2.5 components at a southwestern Mediterranean site

A set of PM2.5 samples (n = 121) collected at an urban background location in Elche (in southeastern Spain) from December 2004 to November 2005 was analysed by particle-induced X-ray emission (PIXE) and ion chromatography in order to provide source identification and potential source locations. Positive matrix factorization (PMF) was used to estimate source profiles and their mass contributions. The PMF modelling identified six sources: aged sea salt (9.2%), ammonium sulphate (40.4%), soil dust related to Saharan outbreaks (13.0%), traffic 1 (18.9%), nitrate aerosol and traffic 2 (5.5%) and local soil dust (6.0%). Potential source contribution function (PSCF) was then used to identify potential source locations. Scarce influence from Mediterranean and European regions was found with the exception of the nitrate source, whose potential source areas were northern Italy and eastern France. Primary source regions for the remaining components (ammonium sulphate, soil dust-related to Saharan outbreaks and aged sea salt) with known mass contributions due to long-range transport have a marked Atlantic and North African location, primarily between Morocco and northwestern Algeria.
EFFECT OF DROPLET SIZE ON OXIDATION OF DOCOSAHEXAENOIC ACID IN EMULSION SYSTEM

Abstract We investigated the effect of oil droplet size on the oxidation rate of DHA monodispersed emulsion with xanthan. Xanthan-free emulsions creamed rapidly but no creaming was observed in the emulsions containing xanthan over 8 weeks. While the peroxide value (POV) of the xanthan-free emulsion reached 10meq/ kg at 20 days, that of both emulsion systems containing xanthan changed little during the first 20 days. The POV for the emulsion with small droplet was higher than that for the emulsion with large droplet.
The Spray Drying of Food Flavors

Abstract Spray drying is the most commonly used technique for the production of dry flavorings. In spray drying, an aqueous infeed material (water, carrier, and flavor) is atomized into a stream of hot air. The atomized articles dry very rapidly, trapping volatile flavor constituents inside the droplets. The powder is recovered via cyclone collectors. Flavor retention is quite satisfactory if dryer operating parameters are properly chosen. Flavor retention is maximized by using a high infeed solids level, high viscosity infeed, optimum inlet (160–210°C) and high exit (>100°C) air temperatures, and high molecular weight flavor molecules. The shelf life of oxidizable flavor compounds is strongly influenced by the flavor carrier.
Quasi-Elastic Neutron Scattering Studies on Clay Interlayer-Space Highlighting the Effect of the Cation in Confined Water Dynamics

It has long been realized that cations play a critical role in the readsorption of water into the interlayer region in clay minerals. To explore possible differences in the water dynamics related to the presence of cations in clays, and to examine the dynamics of its surface water, which plays a prominent role in diffusion of water in clay barriers a comparative study was carried out to highlight differences between water dynamics in montmorillonite and halloysite. Whereas montmorillonite has interlayer cations that interact with interlayer water, and which can rehydrate after dehydration at temperature, halloysite has no interlayer cations. Water is found in both interlayers and on the surface of these clay particles. In this study we show that by combining incoherent inelastic neutron scattering (quasi-elastic and elastic fixed window) and neutron spin echo, it was possible to discriminate the dynamics of surface water (by collapsing the interlayer region by heating and rehydrating the surface layer) fr.
Theoretical and Experimental Investigations of Flat Sheet Membrane Module Types for High Capacity Gas Separation Applications

Gas permeation is increasingly considered for high capacity applications. This contribution discusses the commonly employed membrane module types for flat sheet membranes and suggests a new module concept. The applications considered are the separation of CO2 from flue gas and hydrocarbon dewpointing of natural gas. Rigorous models for predicting the operating performance of the module types are described. Pilot plant experiments were conducted to validate the model for envelope type modules. Simulation studies were carried out to predict the performances of the different module types for the two examples and assess their advantages and disadvantages.
Are they paying attention, or are they shoe-shopping? Evidence from online learning

In response to the coronavirus pandemic, schools across the nation made an abrupt transition to teaching online as states instituted stay-at-home measures. This mixed methods study examines the attentiveness of adult learners in an online Doctorate of Education program. Three main findings emerged: 1) online courses where the students and instructor all are logged on to Zoom synchronously had higher average attentiveness compared to hybrid format courses where some students are physically in the classroom and some are on zoom; 2) average attentiveness was higher during the synchronous portion of classes with an asynchronous portion compared to fully synchronous online classes; and 3) average attentiveness was lower for class segments of over 30 minutes than class segments under 30 minutes.
Synthesis and Characterization of Amorphous Hydrated FePO4 and Its Electrode Performance in Lithium Batteries

Amorphous iron(III) phosphate was synthesized by spontaneous precipitation from equimolar aqueous solutions of Fe(NH 4 ) 2 (SO 4 ) 2 . 6H 2 O and NH 4 H 2 PO 4 , using hydrogen peroxide as the oxidizing agent. The material was characterized by chemical analysis thermogravimetrical analysis, differential thermoanalysis, X-ray powder diffraction, and scanning electron microscopy. The material was tested as a cathode in nonaqueous lithium cells Galvanostatic intermittent titration technique was used to follow the lithium intercalation process The effect of firing on the specific capacity was also tested. The material lired at 400°C showed the best electrochemical performance, delivering about 0.108 Ah g -1 when cycled at C/10 rate. The capacity fade upon cycling was found as low as 0.075% per cycle.
Do early neutrophil to eosinophil ratio and the levels of neutrophil and white blood cells predict intra-hospital mortality in patients with spontaneous intracerebral hemorrhages?

Amac: Son yillarda, spontan intraserebral hemorajide (ICH) kirmizi kan hucresi dagilim genisligi (RDW), notrofil/lenfosit orani (NLO) ve C-reaktif protein/albumin orani (CAO) gibi inflamatuar belirtecler arastirilmistir. Ancak, bunlar ICH’de birlikte incelenmemistir. Bu calismada, spontan ICH tanisi alan hastalarda basvuru sirasinda yukarida belirtilen belirteclerle birlikte notrofil, notrofil/eozinofil orani (NEO) ve beyaz kan hucresi (WBC) duzeylerinin hastane ici mortaliteyi tahmin edip etmedigini arastirdik. Yontemler: Bu retrospektif kohort calismasini, Nisan 2015 - Mart 2019 tarihleri arasinda klinigimizde yatan spontan ICH hastalarini inceleyerek gerceklestirdik. Hastalari hayatta kalanlar ve hayatta kalmayanlar olarak iki gruba ayirdik. Mortalite icin laboratuvar degiskenlerinin prediktif degerini degerlendirmek ve kesme degerlerini hesaplamak icin, alici calisma karakteristikleri (ROC) egrisi analizi kullanilmistir. Bulgular: Calismaya, 82’si hayatta kalan ve 48’i hayatta kalmayan olmak uzere 130 hasta dahil edildi. Hastanede olen hastalarin medyan hemoraji hacmi, WBC ve notrofil degerleri yasayanlara gore anlamli olarak yuksekti (sirasiyla P<0,001; P=0,001 ve P=0,003). Medyan CAO, NLO, NEO ve RDW-SD degerleri acisindan iki grup arasinda fark yoktu (sirasiyla P=0,216; P=0,237; P=0,229 ve P=0,215). ROC egrisi altindaki alan: WBC icin 0,676 (% 95 CI; 0,57-0,78) ve notrofil icin 0,659 (% 95 CI; 0,56-0,76) idi. Sonuc: Sonuclarimiz, spontan ICH'nin akut evresinde daha yuksek notrofil ve WBC duzeyleri hastalarin hastane ici mortalitesini ongormustur. NEO’nin predikdif degeri icin ileri calismalara ihtiyac vardir.
Students’ ideas and misconceptions about for the atom: A Latent Class Analysis with covariates

The current study investigates students’ fundamental ideas and misconceptions about ontological features of atoms identity and behaviour. These conceptions are being investigated across tasks with varying context. Participants were secondary education students in eighth, tenth and twelfth grades. Latent Class Analysis (LCA), a psychometric approach, was implemented to analyze a set of four tasks, in order to identify distinct mental models, which share specific sets of misconceptions. Furthermore, the detected mental models were associated with a number of external variables, such as the age, and the three cognitive variables: formal reasoning, field dependence-independence and divergent thinking. Results indicated that age and two cognitive variables under study had significant effects on students’ mental models. Implications for theory and practice are discussed.
Screening of Carbamates and Ureas in Fresh and Processed Tomato Samples using Microwave-Assisted Extraction and Liquid Chromatography

Abstract An analytical method, based on microwave-assisted extraction and liquid chromatography with diode array detection, for the determination of six carbamate and three urea pesticides in fresh and processed tomato samples is described. Significant parameters affecting extraction efficiency were optimized. Under optimum microwave-assisted extraction conditions (20 mL acetonitrile, for 10 minutes, at 60°C), pesticides were extracted with recoveries ranging from 57.6 to 102% (RSDs < 7%). Quantification limits between 6.5 and 39.6 µg/kg were obtained. A total number of 28 different fresh tomato samples and 6 processed tomato products were analysed. Confirmation of suspicious samples was performed by LC-MS.
Animal Sounds Classification Scheme Based on Multi-Feature Network with Mixed Datasets

In recent years, as the environment has become an important issue in dealing with food, energy, and urban development, diverse environment-related applications such as environmental monitoring and ecosystem management have emerged. In such applications, automatic classification of animals using video or sound is very useful in terms of cost and convenience. So far, many works have been done for animal sounds classification using artificial intelligence techniques such as a convolutional neural network. However, most of them have dealt only with the sound of a specific class of animals such as bird sounds or insect sounds. Due to this, they are not suitable for classifying various types of animal sounds. In this paper, we propose a sound classification scheme based on a multi-feature network for classifying sounds of multiple species of animals. To do that, we first collected multiple animal sound datasets and grouped them into classes. Then, we extracted their audio features by generating mixed records and used those features for training. To evaluate the effectiveness of our scheme, we constructed an animal sound classification model and performed various experiments. We report some of the results.
Susceptibility to Spirodiclofen in field populations of Tetranychus urticae (Acari: Tetranychidae) from strawberry plantations in Lima region, Peru

The use of inhibitors of lipids synthesis is among the available strategies for the control of Tetranychus urticae (Acari: Tetranychidae) in strawberry plantations. The study aimed to monitor the susceptibility to Spirodiclofen in field populations of T. urticae from strawberry plantations in Lima region, Peru. Adult T. urticae were collected from strawberry plantations in districts of Aucallama, Chancay, Huaral, and Santa Rosa de Quives in Lima region, Peru. A population collected from Acalypha wilkesiana in campus of the Universidad Nacional Agraria La Molina (UNALM), where chemical pesticide has never been applied, was used as a susceptible reference line. This reference line was subjected to toxicological bioassays to estimate the LC50 and LC95. Afterward, bioassays were conducted on the population using the LC50 and LC95 estimated for the susceptible reference line. The obtained data was subjected to one-way analysis of variance and mean comparison was done by Tukey test (α = 0.05). There were no significant differences between the four populations’ LC50 and LC95, with respect to the estimated susceptible reference line. This implies that the four studied populations of T. urticae are susceptible to Spirodiclofen, with no evident resistance problems. Therefore, Spirodiclofen is a useful tool for the control of T. urticae form strawberry plantations in the studied location. The factors that influenced the results are discussed in the present work.
Protein conformer selection by sequence-dependent packing contacts in crystals of 3-phosphoglycerate kinase

sequence-dependent packing contacts in crystals of 3-phosphoglycerate kinase. Zoltán Kovári , Mária Vas , a Department of Theoretical Chemistry, Eötvös Loránd University, Budapest, Hungary, b Department of Computer Assisted Drug Discovery, Gedeon Richter Ltd., Budapest, Hungary, c Institute of Enzymology, Biological Research Center, Hungarian Academy of Sciences, Budapest, Hungary. E-mail: z.kovari@index.hu
OFDM-IDMA Uplink Multi-user System with Scalable Latency for Next Generation WLAN

In this paper, we propose an Interleave-Division Multiple Access (IDMA) based uplink multi-user system fornext generation WLAN. By minimizing the latency throughaccurate detection per iteration, we were able to design a receiver architecture that meets the latency demands of current IEEE802.11 WLAN. To do this, the proposed system utilizes a novel algorithm for simplified LLR calculation of the soft input soft output demapper needed in the IDMA first stage detection.The proposed system has a maximum of 34.8 bits/s/Hz spectral efficiency for a single spatial stream and can support up to 8 users in a single 20MHz channel. We compare the proposed system to a reference OFDMA system and show its advantages in terms of diversity, flexibility and BER performance. Keywords: 802.11ax; IDMA; uplink multi-user access
Acetone n-radical cation internal rotation spectrum: The torsional potential surface

The one color REMPI and two color ZEKE-PFI spectra of acetone-d3 have been recorded. The 3px Rydberg state of acetone-d3 lies at 59 362.3 cm−1 and both of the torsional modes are visible in this spectrum. The antigearing Rydberg (a2) mode, v12*, has a frequency of 62.5 cm−1, while the previously unobserved gearing (b1) mode, v17*, is found at 119.1 cm−1. An ionization potential of 78 299.6 cm−1 for acetone-d3 has been measured. In acetone-d3 n-radical cation ground state, the fundamentals of both of the torsional modes have been observed, v12+ at 51.0 cm−1 and v17+ at 110.4 cm−1, while the first overtone of v12+ has been measured at 122.4 cm−1. Deuterium shifts show that v12+ behaves like a local C3v rotor, but that v17+ is canonical. Combining this data with that for acetone-d0 and aacetone-d6 has allowed us to fit the observed frequencies to a torsional potential energy surface based on an ab initio C2v cation ground state geometry. This potential energy surface allows for prediction of the v17 vibratio.
VIBRATIONAL SPECTRA OF t-BUTYL ALCOHOL, t-BUTYLAMINE AND t-BUTYL ALCOHOL + t-BUTYLAMINE BINARY LIQUID MIXTURES

Raman and FT-IR absorption spectra of t -butyl alcohol and t -butylamine pure components have been recorded in the liquid state in the region of 400-4000 cm -1 . The data obtained have been used to propose complete vibrational assignments for each of the liquid component and the structural features are discussed. Additionally, the Raman and infrared spectra of the binary liquid mixtures for the t -butyl alcohol/ t -butylamine system have also been recorded. The variations in frequency shifts, intensities and line widths are discussed with a view to understanding the origin of such variations. KEY WORDS: Infrared and Raman spectra, Binary solution, t -Butanol, t -Butylamine Bull. Chem. Soc. Ethiop. 2003 , 17(2), 211-218.
Growth of NiO and SiO2 thin films

Abstract It is now well established that thick films of transition-metal oxides such as NiO grow according to a modified Wagner mechanism by the diffusion of ions along grain boundaries in the oxide film. It is shown that the growth of thin films of this oxide is consistent with that of thick films if it is assumed that the same transport processes dominate, but that there is a strong electric field built in which assists injection of point defects into the oxide at the oxide/gas interface (Cabrera-Mott mechanism). Silica films are amorphous, and oxygen can be transported through them as a neutral interstitial molecule. When combined with reaction at the silicon/oxide interface this process accounts for many aspects of SiO2 growth kinetics (Deal-Grove model). Very thin films, however, grow in dry oxygen at a faster rate than expected from this model; particularly at low temperatures and/or low pressures. Ionic oxygen motion through the SiO2 network, acting in parallel with molecular diffusion, is explored.
Corrole-Fullerene Dyads: Will They Replace Porphyrin-Fullerene Systems?

A short review of the unique spectral properties of corroles—new members of porphines—is given. Main physical properties of corroles and their covalent dyads with fullerene are presented and discussed. A comparison of corroles properties with those of similar systems containing porphyrins is also given. Some advantages and disadvantages of the corrole-fullerene systems are bring into relief.
Optimal Retirement Under Partial Information

The optimal retirement decision is an optimal stopping problem when retirement is irreversible. We investigate the optimal consumption, investment, and retirement decisions when the mean return of a risky asset is unobservable and is estimated by filtering from historical prices. To ensure nonnegativity of the consumption rate and the borrowing constraints on the wealth process of the representative agent, we conduct our analysis using a duality approach. We link the dual problem to American option pricing with stochastic volatility and prove that the duality gap is closed. We then apply our theory to a hidden Markov model for regime-switching mean return with Bayesian learning. We fully characterize the existence and uniqueness of variational inequality in the dual optimal stopping problem, as well as the free boundary of the problem. An asymptotic closed-form solution is derived for optimal retirement timing by small-scale perturbation. We discuss the potential applications of the results to other partial-information settings.
Errores de medicación en pacientes pediátricos en un hospital universitario en Medellín Colombia, un estudio de corte transversal

Introduction: A third of medical errors has been related to medication errors. In the pediatric population, an incidence of medication errors 3 times higher compared to adults has been described. A recommended strategy to improve medication errors risk management describes the adoption of a notification system that allows detection, identification of causes and the implementation of activities focused on prevention. Objective: To determine the prevalence and to characterize medication errors in the pediatric service reported in the clinical risk management and notification system of an academic hospital in 2017 and 2018. Methodology: Cross-sectional study. The proportion of medication errors in the pediatric department was quantified from a report of the Clinical Risk notification System for 2017 and 2018. Medication errors were grouped according to process, type of error, subgroup and gravity. Descriptive statistics were used for Errores de medicación en pacientes pediátricos en un hospital universitario en Medellín Colombia, un estudio de corte transversal Andrés Felipe Valencia Quintero* Juan Pablo Botero Aguirre** Lina María González Santamaria*** Pedro Amariles Muñoz**** Natalia Andrea Rojas Henao***** *Químico farmacéutico. Hospital Pablo Tobón Uribe. Integrante del Grupo de investigación Promoción y Prevención farmacéutica, Universidad de Antioquia. Medellín. Antioquia. Colombia. **Químico farmacéutico. MSc en Epidemiología. Hospital Pablo Tobón Uribe. Medellín. Antioquia. Colombia. ***Enfermera. Hospital Pablo Tobón Uribe. Medellín. Antioquia. Colombia. ****Químico farmacéutico. PhD en Farmacia. Profesor Titular del Departamento de Farmacia, Universidad de Antioquia. Integrante Grupo de investigación Promoción y Prevención farmacéutica Universidad de Antioquia. Medellín. Antioquia. Colombia. *****Química farmacéutica. MSc en Epidemiología. Hospital Pablo Tobón Uribe. Profesor cátedra. Departamento de Farmacia, Universidad de Antioquia. Medellín. Antioquia. Colombia. Correspondencia: Sr. Valencia. Departamento de Servicios farmacéuticos, Hospital Pablo Tobón Uribe, Calle 78B #69-240, Antioquia Medellín, Colombia. e-mail: valquife@gmail.com MED.UIS. 2020;33(2):33-40 34 Valencia Quintero AF, Botero Aguirre JP, González Santamaria LM, Amariles Muñoz P, Rojas Henao NA. the analysis. Outcomes: 669 reports of adverse events were generated in the pediatric service, 376 (56,20%) were related to medications. The error rate was 7,71 per-1000 patient days. Most of the errors were classified as Error without damage (category B and C), 176 both subcategories (total 352), representing 93,62 % of the total of errors. The prescription process was the one that most reported errors 59,84%. Conclusions: Most of the reported medication errors were related to the prescription. The main were classified in the errors without damage category. MÉD. UIS.2020;33(2):33-40.
Modelling of long-range transport of Southeast Asia biomass-burning aerosols to Taiwan and their radiative forcings over East Asia

Biomass burning produces aerosols and air pollutants during springtime in Southeast Asia. At the Lulin Atmospheric Background Station (LABS) (elevation 2862 m) in central Taiwan, the concentrations of carbon monoxide (CO), ozone (O3) and particulate matter with a diameter less than 10 µm (PM10) were found to be 135–200 ppb, 40–56 ppb and 13–26 µg/m3, respectively, in the springtime (February–April) between 2006 and 2009, which are 2–3 times higher than those in other seasons. Simulation results indicate that higher concentrations during springtime are related to biomass-burning plumes transported from the Indochinese peninsula of Southeast Asia. The spatial distribution of high aerosol optical depth (AOD) was identified by satellite measurement and Aerosol Robotic Network (AERONET) ground observation, and could be reasonably captured by the WRF-Chem model during the study period of 15–18 March 2008. Simulated AOD reached as high as 0.8–1.2 in Indochina situated between 10–22°N and 95–107°E. According to the simulation results, 34% of the AOD was attributed to organic carbon over Indochina, while the contribution of black carbon to AOD was about 4%. During the study period, biomass-burning aerosols over Indochina have a net negative effect (−26.85 W·m−2) at ground surface, a positive effect (22.11 W·m−2) in the atmosphere and a negative forcing (−4.74 W·m−2) at the top of atmosphere. Under the influence of biomass-burning aerosol plume transported by strong wind, there is a NE−SW zone stretching from southern China to Taiwan with reduction in shortwave radiation of about 20 W·m−2 at ground surface. Such significant reduction in radiation attributed to biomass-burning aerosols and their impact on the regional climate in East Asia merit attention.