Miracle-dz/UniFAR-FTUs huggingface dataset:
Water Disinfection Using Silver and Zinc Oxide Nanoparticles

Waterborne disease has changed a basic challenge in human population. recently, the use of nanotechnology and application of nanomaterials for the control of pathogens in water is widely increased in research. Common indicator for microbial quality of water are determine presence of total and fecal coliforms. The purpose of this study was to evaluate the effect of Silver (Ag) and zinc oxide (ZnO) nanoparticles (NPs) and combination of them in removing total and fecal coliform bacteria from contaminated water. In this experimental study a synthetic solution was made by adding effluent to distilled water. In each run, the nano silver (20-100 μg /L) and ZnO NPs (0.25-2 mg/L) were added to contaminated water. The samples were tested by 15-tube series method based on the instruction 9221-B of 21th edition of standard method book on water and wastewater experiments. Bacteria removal efficiency were examined in contact times (15, 30,60, 90 and 120) minutes. Our data indicate a decrease in the number of bacteria (MPN) in the presence of the nanoparticles. Results revealed that the removal percentage of coliform bacteria removal increased with increasing the contact time and concentrations of nanoparticles. Ag NPs at a concentration of 100 μg /L and ZnO NPs at a concentration of 2 mg/L showed the highest percentage of removal bacteria and the combination of ZnO and Ag NPs have been high synergistic behavior against coliform bacteria in contaminated water. therefore, using a combination of ZnO and Ag NPs can become a new and efficient method for the removal of indicator bacteria from contaminated water.
Antimicrobial Activity of Calcium Hydroxide Synthesized from Indonesian Limestone against Enterococcus faecalis

Recurrent endodontic infections of treated teeth are mainly linked to microbial persistency in the root canal system. Enterococcus faecalis is a bacterium that is often identified in these recurrent infections. Calcium hydroxide (Ca(OH)2) is a widely used root canal medicament and is now being developed to be produced from natural materials. Ca(OH)2, which is synthesized from natural limestone from Palimanan, Indonesia, has a structure similar to Ca(OH)2, which is often used as a root canal medicament. The purpose of this study was to determine the antimicrobial property of Ca(OH)2 paste synthesized from natural limestone compared to conventional Ca(OH)2 paste. This study is an in vitro experimental study consists of 3 groups (n=24, namely, conventional Ca(OH)2 paste, limestone synthesized Ca(OH)2 paste, and saline as the negative control, for 2 intervals of time and evaluated by Total Plate Counting (TPC) method. Samples were mandibular first premolar root canal prepared by root canal preparation and contaminated with E. faecalis (ATCC 29212). The infected root canals of each group were treated by the medicaments, and samples from the root canals were taken on day 7 (n=4) and 14 (n=4). Results showed that both Ca(OH)2 groups had antimicrobial activities against E. faecalis. The limestone Ca(OH)2 paste group had the least amount of bacterial colonies on the 7th day compared to other groups. In contrast, on the 14th day, the conventional Ca(OH)2 paste had the least bacterial colonies. It can be concluded that the Ca(OH)2 paste synthesized from natural limestone has an antimicrobial effect on E. faecalis, the antimicrobial effect was higher on the 7th day but decreases on the 14th day, whereas the conventional Ca(OH)2 had a higher antimicrobial effect on day 14 compared to day 7. Further studies are expected to improve the long-term antimicrobial effectiveness and sustainability of the natural limestone synthesized Ca(OH)2 paste.
Super stable water-based magnetic fluid as a dual-mode contrast agent

Abstract Early diagnosis of cancer has become one of the effective ways to prevent and treat cancer. At present, magnetic resonance imaging (MRI) diagnosis based on nanosized iron oxide with no toxicity and excellent biocompatibility has attracted much attention. But the poor stability of magnetic fluid (MF) is becoming more and more prominent. In view of the poor stability of MF, the dodecanethiol-poly(methacrylic acid) (DDT-PMAA) as an outer shell was prepared for the MFs (Fe3O4@DDT-PMAA MF) to improve the stability. We also compared the amount of reactants, the ratio of reactants, and the reaction temperature, and finally screened out the best reaction conditions, so as to get more stable products. The stability of the system was studied by visual observation, stability index (I), and magnetic weight change. The results demonstrated that Fe3O4@DDT-PMAA can be stable for more than 60 days. The T 1 mapping image showed that the longitudinal relaxivity (r 1) value was 6.9 mM−1 s−1 (1.5 T, room temperature), which was higher than the commercial contrast agent SHU-555 (r 1 = 2.9 mM−1 s−1), but the transverse relaxivity (r 2) value accounted for 64.48% of the commercial contrast agent Feridex (r 2 = 67.8 mM−1 s−1, 1.5 T, room temperature) because the outermost layer was encapsulated by a polymer. In addition, the imaging effect was more vivid and there was almost no background interference of T 1- and T 2-weighted images in vivo, which indicated that the Fe3O4@DDT-PMAA MF exhibited excellent potential in MRI applications.
Eyetracking a meeting of minds: teachers’ and students’ joint attention during synchronous online language tutorials

Abstract The COVID-19 pandemic forced many language teachers to move their teaching online without sufficient preparation. This unexpected change of practice engendered doubt and anxiety in teachers. They worried about their ability to attract and hold their learners’ attention, an element that is essential for successful online teaching. Our dual-point eyetracking study looks into how students and teachers establish joint attention during online language tutorials. It also examines various means teachers employ to guide students’ attention and scaffold their meaning making process. The data was collected from two online language tutorials where the eye movement of one teacher and one student was tracked simultaneously, as well as recordings of their stimulated reflection while watching their own eyetracking visualisation replay. By combining mixed-method data and dual perspectives, we were able to unveil the complex interactions in online language tutorials and offer practical suggestions to language practitioners who hope to improve their online teaching skills.
Effect of Oxygenate on Emission and Performance Parameters of a CI Engine Fuelled with Blends of Diesel-Algal Biodiesel

In this present study, the bio-oil is derived from Stoechospermum marginatum , brown seaweed through soxhlet oil extraction method. n -hexane is used as a solvent for rupturing the cell wall membrane and extracting the bio-oil. Single-stage base catalysed transesterification method is adopted considering the presence of low free-fatty acid contents.Mineral diesel and diesel-algal biodiesel blend are the primary test fuels. Di-ethyl ether is used as oxygenate to the diesel- algal biodiesel blend to enhance the performance and emission characteristics. The physio-chemical properties of oxygenated fuel blends showed a significant decrease in density and kinematic viscosity along with a notable increase in the Cetane number. The experimental investigation revealed that the addition of di-ethyl ether to diesel-algal biodiesel blend enhanced the brake thermal efficiency significantly along with reduction in brake specific fuel consumption. The emission parameters of oxygenated fuel blends like carbon monoxide and unburned hydrocarbon notably decreased along with a marginal increase in oxides of nitrogen emission.
Profitability and voluntary disclosure of Brazilian equity companies

This article verified whether profitability positively influences companies' voluntary disclosure level. To achieve the objective of this article, a Multiple Linear Regression (MLR) Analysis was used with fixed effect panel data, from all non-financial companies of B3 (Brazilian stock exchange), being 527 companies from the period from 2010 to 2018 (nine years), generating a total initial sample of 4,743 observations. Based on the results of the econometric model, we found that higher profitability is associated with lower voluntary disclosure levels of B3 listed companies. This evidence contradicts the hypothesis of the literature, that indicates a positive relationship between profitability and voluntary disclosure.
The importance of future generations and conflict management in conservation

The need to scale‐up conservation initiatives is widely accepted, but understanding how to catalyze the adoption of conservation initiatives remains elusive. To address this challenge, we used diffusion of innovation theory and Best‐Worst Scaling experiments to rank the factors that influence the adoption of Locally Managed Marine Areas (LMMAs) by villages in north Madagascar. The most important driver for respondents to adopt LMMAs was the wellbeing of future generations, while the most important barrier was conflict within and between villages that could arise from the adoption of LMMAs. This emphasis on the benefits and costs of adoption is consistent with diffusion of innovation theory. However, our results indicate that people's intrinsic values (e.g., benevolence and peace) were more important to survey respondents in the adoption of LMMAs than is generally reported in the diffusion of innovation literature. Concerns about conflict from LMMAs and the distribution of livestock incentives warrant further consideration to support the adoption of this conservation initiative in the context of the Sustainable Development Goals. Our study can guide future conservation research and practice to identify the “best” and “worst” attributes of LMMAs and other initiatives to increase the adoption of conservation.
Prediction of CO2/O2 absorption selectivity using supported ionic liquid membranes (SILMs) for gas–liquid membrane contactor

ABSTRACT Given their unique and tunable properties as solvents, ionic liquids (ILs) have become a favorable solvent option in separation processes, particularly for capturing carbon dioxide (CO2). In this work, a simple method that can be used to screen the suitable IL candidates was implemented in our modified gas–liquid membrane contactor system. Solubilities, selectivities of CO2, nitrogen (N2), and oxygen (O2) gases in imidazolium-based ILs and its activity coefficients in water and monoethanolamine (MEA) were predicted using conductor-like screening model for real solvent (COSMO-RS) method over a wide range of temperature (298.15–348.15 K). Results from the analysis revealed that [emim] [NTf2] IL is a good candidate for further absorption process attributed to its good hydrophobicity and CO2/O2 selectivity characteristics. While their miscibility with pure MEA was somehow higher, utilizing the aqueous phase of MEA would be beneficial in this stage. Data on absorption performances and selectivity of CO2/O2 are scarce especially in gas–liquid membrane contactor system. Therefore, considering [emim] [NTf2] IL as a supporting material in supported ionic liquid membranes (SILMs), using aqueous phase of MEA as an absorbent would result in a great membrane-solvent combination system in furthering our gas–liquid membrane contactor process. In conclusion, COSMO-RS is a potentially great predictive utility to screen ILs for specified separation applications. In addition, this work provides useful results for the [emim] [NTf2]-SILMs to be extensively applied in the field of CO2 capture and selective O2 removal.
Preparation of stimuli-responsive nanogels based on poly(N,N-diethylaminoethyl methacrylate) by a simple “surfactant-free” methodology

ABSTRACT The synthesis of poly(N,N-diethylaminoethyl methacrylate)-core-polyethyleneglycol-shell (PDEAEM-core-PEG-shell) nanogels was achieved by using a “surfactant-free” emulsion polymerization with the aid of commercially available polyethyleneglycol methyl ether methacrylates (PEGMAs) as polymerizable stabilizers. By adjusting the synthetic parameters like the choice of initiator, cross-linker, PEGMA:DEAEM ratio, and molecular weight of PEGMA, a series of core-shell nanogels varying in size (50–350 nm), PDEAEM content, and pH/temperature responsive behavior were obtained in reactions taking only 60 min. The nanogels were used as nanoreactors for the preparation of gold nanoparticles. The PEGylated nanogels have a great potential to be used for diagnosis and therapy.
Running title: CASHEW PHYSIOLOGICAL RESPONSES TO SALINIY

This study evaluate growth, gas exchange, solute accumulation and activity of antioxidant enzymes in dwarf cashew clones subjected to salinity. Shoot dry mass reduced 26.8% (CCP06) and 41.2% (BRS189) at 16 dS m, concerning control. For net photosynthesis, CCP06 and BRS189 presented 69.8% and 34.7% of reduction, respectively. Na and Cl contents increased in leaves and roots, in both clones, although CCP06 leaves presented Na concentrations lower than those of BRS189, the fi rst one was the clone that the most accumulated such toxic ion, whereas K content remained almost unchanged for both clones. Soluble N-amino was the organic solute that more varied with salinity in cashew seedlings. Salt stress increased the activity of superoxide dismutase in both clones, mainly 16 dS m treatment. Additionally, salinity promoted increases in ascorbate and guaiacol peroxidase activities, and the last enzyme was the main involved in H2O2 removal. Despite the reductions in growth and gas exchange, dwarf cashew seedlings of both clones presented an osmotic adjustment mechanism, and an effi cient enzymatic antioxidant system that were able to attenuate the salt and oxidative stress, respectively. Our research suggested that BRS189 clone is more tolerant to salt
Syllabic length effect in Spanish: evidence from adult readers. Efecto de longitud silábica en español: evidencia en lectores adultos

Los modelos cognitivos de doble ruta de lectura apoyan la existencia de dos vías: la léxica que opera con palabras completas y permite el acceso directo desde la ortografía a la semántica y a la pronunciación; y la subléxica que funciona de manera analítica convirtiendo, mediante reglas de correspondencia, cada uno de los grafemas en el fonema correspondiente. Numerosas investigaciones concluyen que el efecto de longitud constituye un índice de gran utilidad para el estudio de los mecanismos que subyacen a la lectura. El objetivo del presente trabajo es estudiar el efecto de longitud a partir del análisis de los tiempos de reacción. Para esto, se evaluaron 84 estudiantes universitarios con una tarea de lectura en voz alta de palabras y no-palabras de distinta longitud. Se llevó a cabo un análisis por sujeto (F1) y un análisis por estímulo (F2) que arrojaron efecto de longitud estadísticamente significativo y, además, se observó una interacción significativa con el tipo de estímulo. Estos hallazgos constituyen evidencias convergentes con la asunción de la existencia de dos procedimientos de lectura en lenguas de ortografía transparente como el español. Abstract
The rate of asymptomatic throat carriage of Streptococcus pyogenes and its associated risk factors among Kabul University students

Streptococcus pyogenes (S. pyogenes) is the main agent of acute pharyngitis and skin infections that may result in the late complications of glomerulonephritis and rheumatic fever. Infection with streptococcus group A is a global health problem, which is most common in children and adults. This study was conducted to investigate the rate of S. pyogenes throat carriers and its main risk factors among healthy students of Kabul university. In the present study pharyngeal swabs of 260, [155 (59.6%) were male and 105 (40.4%) were female] asymptomatic university students aged between 19-30 years, were collected and immediately transported to the laboratory for detection of S. pyogenes following standard microbiological procedures. Production of beta hemolytic colonies on blood agar, sensitivity to bacitracin antibiotic, gram stain positivity, catalase negativity test and streptococcal grouping latex kit (ProlexTM) tests were used to identify and differentiate S. pyogenes from other streptococcus spp. Statistical analysis of data was performed using SPSS 21, Chi-square and Logistic regression tests were applied for the categorical data analysis. A P value equal to or less than 0.05 was considered statistically significant. Totally 61 (23.5%) beta hemolytic streptococci were isolated from 260 samples. Among 61 beta hemolytic isolates, 44 (16.9%) were identified as S. pyogenes. The colonization rate of S. pyogenes was higher in male 25 (56.8%) than female 19 (43.2%), which was not statistically significant (p=0.678). Age, residence of the students at hostel and shared utensil use were not statistically significant (p=0.088, p= 0.449, p=0.241 respectively), but the number of children in the family was an important risk factor. People with 1-3 children had a 23-fold higher risk (p˂0.05), and people with 4-6 children had a 27-fold higher risk of carrying S. pyogenes, than those who did not had any children (p˂0.05). In the present study the asymptomatic throat carriage rate of S. pyogenes among Kabul University students, was high. Among all risk factors the number of children in the family was significantly associated with S. pyogenes throat carriage.
EUREC4A's Maria S. Merian ship-based cloud and micro rain radar observations of clouds and precipitation

Abstract. As part of the EUREC4A field campaign, the research vessel Maria S. Merian probed an oceanic region between 6° N and 13.8° N and 51° W to 60° W for approximately 32 days. Trade wind cumulus clouds were sampled in the trade-wind alley region east of Barbados as well as in the transition region between the trades and the intertropical convergence zone, where the ship crossed some mesoscale oceanic eddies. We collected continuous observations of cloud and precipitation profiles at unprecedented vertical resolution (7–10 m in the first 3000 m) and high temporal resolution (1–3 s) using a W-band radar and micro-rain radar (MRR-PRO), installed on an active stabilization platform to reduce the impact of ship motions on the observations. The paper describes the ship motion correction algorithm applied to the Doppler observations to extract corrected hydrometeors vertical velocities and the algorithm created to filter interference patterns in the MRR-PRO observations. Radar reflectivity, mean Doppler velocity, spectral width and skewness for W-band and attenuated reflectivity, mean Doppler velocity and rain rate for MRR-PRO are shown for a case study to demonstrate the potential of the high resolution adopted. As non-standard analysis, we also retrieved and provided liquid water path (LWP) from the 89 GHz passive channel available on the W-band radar system. All datasets and hourly and daily quicklooks are publically available. Data can be accessed and basic variables can be plotted online via the intake catalog of the online book "How to EUREC4A".
Supplementary material to "Impact of Eurasian autumn snow on the winter North Atlantic Oscillation in seasonal forecasts of the 20th century"

Abstract. As the leading climate mode of wintertime climate variability over Europe, the North Atlantic Oscillation (NAO) has been extensively studied over the last decades. Recently, studies highlighted the state of the Eurasian cryosphere as a possible predictor for the wintertime NAO. However, missing correlation between snow cover and wintertime NAO in climate model experiments and strong non-stationarity of this link in reanalysis data is questioning the causality of this relationship. Here we use the large ensemble of Atmospheric Seasonal Forecasts of the 20th Century (ASF-20C) with the European Centre for Medium-Range Weather Forecasts model, focusing on the winter season. Besides the main 110-year ensemble of 51 members, we investigate a second, perturbed ensemble of 21 members where initial (November) land conditions over the Northern Hemisphere are swapped from neighboring years. The Eurasian snow/NAO linkage is examined in terms of a longitudinal snow depth dipole across Eurasia. Subsampling the perturbed forecast ensemble and contrasting members with high and low initial snow dipole conditions, we found that their composite difference indicates more negative NAO states in the following winter (DJF) after positive west to east snow cover gradients at the beginning of November. Surface and atmospheric forecast anomalies through the troposphere and stratosphere associated with the anomalous positive snow dipole consist of colder early winter surface temperatures over Eastern Eurasia, an enhanced Ural ridge and increased vertical energy fluxes into the stratosphere, with a subsequent negative NAO-like signature in the troposphere. We thus confirm the existence of a causal connection between autumn snow patterns and subsequent winter circulation in the ASF-20C forecasting system.
BIS Working Papers No 951 Distrust or speculation ? The socioeconomic drivers of US cryptocurrency investments

Employing representative data from the U.S. Survey of Consumer Payment Choice, we disprove the hypothesis that cryptocurrency investors are motivated by distrust in fiat currencies or regulated finance. Compared with the general population, investors show no differences in their level of security concerns with either cash or commercial banking services. We find that cryptocurrency investors tend to be educated, young and digital natives. In recent years, a gap in ownership of cryptocurrencies across genders has emerged. We examine how investor characteristics vary across cryptocurrencies and show that owners of cryptocurrencies increasingly tend to hold their investment for longer periods. JEL Classification: D14 D91 E42 G11 G12 G28 O33
Effect of compost extract and microelements on growth, yield and active ingredients of Trigonella foenum-graecum L. plants

This investigation was carried out to study the effect of spraying with compost extract and different chelated microelement forms, on the production seed yield, oil production and active substances of fenugreek plants under North Sinai conditions. The results showed that, all treatments recorded a highly significant increase for all studied parameters in both seasons compared with the control treatment. The highest values of all parameters the combining compost extract plus M. E. Humic form. Percentage of increase seed yield was ranged from 30 to 29%, and in fixed oil, the increase reached 131 to 116% in the first and second season, respectively. Also, there was a significant increase in the active substances inside the plant, and found a significant increase when plant treated with compost extract plus M. E. Humic form, where the percentage of increase in mucilage, protein and trigonelline was 128, 68 and 70 % in the first season, while the increase rate was 99, 64, 64% in the second season.
Answers to the reviewers comments “ Multi-scale hydrometeorological observation and modelling for flash-flood understanding ” by Braud

Referee#1 (D. Archer) General 1)This paper gives a clear account of the monitoring philosophy to document the variability of active hydrological processes between and during flash floods from the hillslope scale to the regional scale. Although a suitable event has not yet occurred that will provide a comprehensive test for the developed network, the ambitious network and programme at all scales and at all stages of the hydrological cycle already provides suitable material for publication. Answer: We thank Dr. D. Archer for this positive appraisal of the paper content.