Miracle-dz/UniFAR-FTUs huggingface dataset:
SURVEY EFFICIENCY OF HEAVY METALS ADSORPTION (CU, CD AND PB) IN AQUEOUS SOLUTION ON THE SAFFRON LEAVES AND DETERMINE THE ADSORPTION ISOTHERMS

Background: The presence of heavy metals in the environment, especially in the water creates many health problems. Effective technology for the removal of some of the other methods that are attractive from an economic standpoint, the availability and high power in remove the rest of their advantages. The aim of this study was to investigate the uptake of heavy metals ( Cu , Cd and Pb ) by the saffron leaves of the aquatic environment in the area is available as an absorbent. Materials & Methods: An experimental study in the spring and summer in 2013 in Environmental Health Engineering Research Center of Kerman University of medical was performed. Plantations of Razavi Khorasan dried saffron leaves were used as absorbents. Batch experiments were performed at room temperature on a synthetic and real sample. The effects of PH solution, absorbent dose, contact time, initial concentration of heavy metals absorption isotherms were determined and discussed. Experiments were performed in duplicate, to determine of mean was used the SPSS version 15. Results: PH optimal removal of heavy metals copper, cadmium and lead saffron leaves the absorber was 5. The optimum absorbent for metals (0.5, 1.5 and 1.5 g) and the equilibrium contact times (45, 90 and 90 min), respectively. The optimum conditions for the removal of the 55.75 %, 81.89 % and 83.56 %, respectively. With increasing initial concentrations of copper, cadmium and lead in solution, the removal efficiency decreased. PH was important for the uptake of heavy metals. In actual samples (Martyr Bahonar Copper Industries and battery niruelectronics) optimal amount of adsorbent (1.5, 2and 2 g) and contact times (60, 90, and 90 minutes) respectively. The optimum conditions for the removal of metals, 45.12 %, 68.78 % and 73.53 % respectively. Results from this study showed the highest correlation with the Langmuir isotherm model. Conclusion: The results of the saffron plant leaves absorb more lead than copper metal, copper and cadmium but with more energy will be absorbed. Readily available plant leaves in area and inexpensive absorbent according to the results of this method can be as a practical method to remove heavy metals from industrial waste water can be used. supportLineBreakNewLine]-->
A Comparative Study of Microneedling Alone Versus Along with Platelet-Rich Plasma in Acne Scars

Abstract Context: There are several modalities of treating acne scars. The combination of microneedling and platelet-rich plasma (PRP) is a synergistic approach to treat acne scars. Aims: The aim was to compare the efficacy of microneedling alone versus microneedling with PRP in acne scars. Materials and Methods: This was a split face study conducted on 36 patients with acne scars who underwent four sessions of microneedling with PRP on right side and microneedling alone on left side at monthly interval. The total scars with subtypes and Ecchelle D’Evaluation Cliniques des Cicatrices D’Acne (ECCA) score were assessed at baseline and second, fourth, and sixth visits. Visual analog score (VAS) was evaluated by both physicians and patients. Statistical Analysis: The statistical analysis was carried out using Statistical Package for Social Sciences. Paired-t test and Wilcoxon signed rank test were used to compare the results. Results: Mean age was 23.7±3.2 years with 17 male and 19 female patients. The mean total scars on right and left sides declined from 42.14±21.15 to 25.08±14.14 and 43.28+23.08 to 27.17±15.68, respectively, with insignificant differences (P-value = 0.094). ECCA score on right and left sides declined from 88.31±32.78 to 62.92±23.68 and 89.58±32.43 to 66.25±23.89, respectively (P-value = 0.058). VAS evaluated by patient and physician showed maximum improvement at second and third visits, respectively. Conclusions: This study showed no added advantage of topical application of PRP over microneedling in acne scars.
ReaxFF Reactive Molecular Dynamics Simulation of Functionalized Poly(phenylene oxide) Anion Exchange Membrane

Three functionalized poly(phenylene oxide) (PPO) anion exchange membranes (AEMs), PPO–trimethylamine (PPO–TMA), PPO–dimethylbutylamine (PPO–DMBA), and PPO–dimethyloctylamine (PPO–DMOA), at two hydration levels (λ = 8.3 and 20.8) have been studied by ReaxFF reactive molecular dynamics simulations. Our simulations reveal that with increasing hydration the microstructures of membrane swell and water molecules are more likely to form a channel, which improves the diffusion of hydroxide ion (OH–). Our study of OH– diffusion demonstrates that PPO–TMA hydrated membrane provides the biggest diffusion constant at the high hydration level. However, from comparison of the structural and dynamical properties of the three membranes at the same water content, it is found that when one methyl group of quaternary ammonium center is replaced by a long alkyl chain group, the hydrophobic effects block the OH– approaching nitrogen, resulting in a lower rate of degradation and an improved alkaline stability of PPO–DMOA hydrat.
La educación familiar del ocio: una responsabilidad compartida

El ocio familiar corresponsable genera beneficios educativos, psicológicos y relacionales, por lo cual se reivindica como un derecho a conquistar desde el replanteamiento de las temporalidades (laborales, escolares, extraescolares y de cuidados) y los ritmos de vida. Para potenciar estas experiencias de ocio, los profesionales de la Educación Social pueden realizar un acompañamiento socioeducativo a las familias, entrelazando el ámbito escolar y comunitario.
Users’ Perception on Knowledge Transfer via Mobile Money Services

Mobile money is an electronic wallet service that allows users to store, send, and receive money. Safe and easy electronic payments make mobile money a popular alternative to bank accounts. Despite the convenient services offered to users, the adoption of mobile money is still low. Due to that, the objective of this study is to assess the perceptions of users on mobile money services as a convenient payment alternative. This study adapted the intra-organizational knowledge transfer (KT) model to understand how users perceive mobile money services. This model has been chosen because it is well accepted and recognized among the researchers. Szulanski's intra-organizational KT model consists of four stages, namely initiation, implementation, ramp-up, and integration. This study adopted interpretive structural modeling (ISM) as the methodology. ISM is a well-established methodology for identifying relationships among specific items, which define a problem or an issue. This approach has been increasingly used by various researchers to represent the interrelationships among various elements related to the issue. The data were collected using the survey. The surveys were randomly distributed via e-mail to users in Malaysia. 481 responses answered the survey. On average 69% of the respondents know about mobile money and 31% of the respondents do not know about it. Having said that, 77% of the respondents have heard of mobile money services whereby only 23% have not heard about it. These results show that around 8% of the respondents heard of mobile money services but they do not find out what it means. Keywords— mobile money, knowledge, knowledge transfer, knowledge management
Chemical Recovery of Degraded Soil and Consequence in the Cost of Corn Production

: Improper management degrades the soil, decreases corn productivity and is reflected in the cost of production. The objective of this research was to evaluate the soil recovery in non-conservationist treatments after the change of management and cultivation to the conservation condition direct sowing, and compare these systems to consolidated direct seeding; This evaluation was based on the soil responsiveness to crop production and water erosion control, and based on the financial cost of soil recovery and corn production when soil management was converted from non-conservationist (tillage rotation - RT, minimum tillage - MT, conventional tillage – CT and bare soil - BS) to no-tillage (NT) condition, in a Humic Cambisol. The transition from managements to no-tillage occurred in 2015 year, soil chemical recovery. The cost of production showed a financial loss for the previous treatments CT and BS, on the average of the three corn crops.
Online Shopping Tendency and Customer Trust in Nigerian Service Sector

Conventional shopping affords the customer the convenience of not losing their monies to hackers and scammers and carrying out a transaction in a familiar shop environment, irrespective of the shop location. The unprecedented development in telecommunication/ Information Communications Technology (ICT) has made direct purchase and sale of goods and services possible worldwide using the Internet, an online shopping website in Nigeria. For example, many customers and prospects engage in multi-billion Naira transactions daily in Jumia.com. ng and konga.com. The essence of trust in this platform becomes inevitable, based on the virtual nature of all transactions. This study aims to examine the effect of customer trust and purchase decisions on online shopping in Nigeria. The study clarifies that internet hopping could flourish easily where there is less risk factor, proof of effective service quality delivery, and unbridled evidence of trust in the service providers' ability to deliver. The descriptive methodology was adopted for the study, and 277 questionnaires were administered to respondents, mainly online customers of jumia.com. ng. Correlation analysis was used to analyze the underlying variables of the study. The results revealed that there is a positive interrelationship between online shopping and trust in Nigerian. The study concludes that online service providers need to entrench trust amongst customers and exclude all risk factors that could be inimical to the growth and development of online hopping in Nigeria.
Dissolution/reprecipitation technique for waste polyolefin recycling using new pure and blend organic solvents

Abstract Restoration of waste polymer based on low-density polyethylene (LDPE), high-density polyethylene (HDPE) and polypropylene (PP) is studied using the dissolution/reprecipitation method. In this technique, pure turpentine, turpentine/petroleum ether (PetE) and turpentine/benzene as solvents with different fractions and PetE and n-hexane as non-solvents were examined. Commercial polymer products (packaging food, bags, laboratory plastic materials, detergent containers) used as raw materials were optimized with model polymers. Polymer recoveries in every case were <94%. Fourier transform infrared (FTIR) spectra and tensile mechanical properties of the samples before and after recycling were measured. Potential recycling-based degradation of the polymer was further investigated by measuring the thermal properties (melting point and crystallinity), before and after recycling, using differential scanning calorimetry (DSC). The blend solvents were seen as good solvents for all polyolefins used and the dissolution temperature was less than the pure solvent at the same time. High reconditioning was observed in most recycled samples, with no significant difference from the virgin materials. The studied technique seems to be viable for waste polyolefin polymer recycling.
Generalized contraction involving an open ball and common fixed point of multivalued mappings in ordered dislocated quasi metric spaces

The aim of this work is to obtain fixed point results for multivalued mappings satisfying generalized contractions on the intersection of an open ball and a sequence in left (right) K-sequentially complete ordered dislocated quasi metric space. An example has been built to demonstrate the novelty of results. Our results generalize and extend the results of Altun et al. (J. Funct. Spaces, Article ID 6759320, 2016)
Top-down estimates of anthropogenic VOC emissions in South Korea using formaldehyde vertical column densities from aircraft during the KORUS-AQ campaign

Nonmethane volatile organic compounds (NMVOCs) result in ozone and aerosol production that adversely affects the environment and human health. For modeling purposes, anthropogenic NMVOC emissions have been typically compiled using the “bottom-up” approach. To minimize uncertainties of the bottom-up emission inventory, “top-down” NMVOC emissions can be estimated using formaldehyde (HCHO) observations. In this study, HCHO vertical column densities (VCDs) obtained from the Geostationary Trace gas and Aerosol Sensor Optimization spectrometer during the Korea–United States Air Quality campaign were used to constrain anthropogenic volatile organic compound (AVOC) emissions in South Korea. Estimated top-down AVOC emissions differed from those of the up-to-date bottom-up inventory over major anthropogenic source regions by factors of 1.0 ± 0.4 to 6.9 ± 3.9. Our evaluation using a 3D chemical transport model indicates that simulated HCHO mixing ratios using the top-down estimates were in better agreement with observations onboard the DC-8 aircraft during the campaign relative to those with the bottom-up emission, showing a decrease in model bias from –25% to –13%. The top-down analysis used in this study, however, has some limitations related to the use of HCHO yields, background HCHO columns, and AVOC speciation in the bottom-up inventory, resulting in uncertainties in the AVOC emission estimates. Our attempt to constrain diurnal variations of the AVOC emissions using the aircraft HCHO VCDs was compromised by infrequent aircraft observations over the same source regions. These limitations can be overcome with geostationary satellite observations by providing hourly HCHO VCDs.
A Prediction Model for Detecting Developmental Disabilities in Preschool-Age Children Through Digital Biomarker-Driven Deep Learning in Serious Games: Development Study

Background Early detection of developmental disabilities in children is essential because early intervention can improve the prognosis of children. Meanwhile, a growing body of evidence has indicated a relationship between developmental disability and motor skill, and thus, motor skill is considered in the early diagnosis of developmental disability. However, there are challenges to assessing motor skill in the diagnosis of developmental disorder, such as a lack of specialists and time constraints, and thus it is commonly conducted through informal questions or surveys to parents. Objective This study sought to evaluate the possibility of using drag-and-drop data as a digital biomarker and to develop a classification model based on drag-and-drop data with which to classify children with developmental disabilities. Methods We collected drag-and-drop data from children with typical development and developmental disabilities from May 1, 2018, to May 1, 2020, via a mobile application (DoBrain). We used touch coordinates and extracted kinetic variables from these coordinates. A deep learning algorithm was developed to predict potential development disabilities in children. For interpretability of the model results, we identified which coordinates contributed to the classification results by applying gradient-weighted class activation mapping. Results Of the 370 children in the study, 223 had typical development, and 147 had developmental disabilities. In all games, the number of changes in the acceleration sign based on the direction of progress both in the x- and y-axes showed significant differences between the 2 groups (P<.001; effect size >0.5). The deep learning convolutional neural network model showed that drag-and-drop data can help diagnose developmental disabilities, with an area under the receiving operating characteristics curve of 0.817. A gradient class activation map, which can interpret the results of a deep learning model, was visualized with the game results for specific children. Conclusions Through the results of the deep learning model, we confirmed that drag-and-drop data can be a new digital biomarker for the diagnosis of developmental disabilities.
Synthesis, characterization and cytotoxicity evaluation of magnetic nanosilica in L929 cell line

Recently, the incorporation of magnetic nanoparticles in nanomaterials has been showning to be very efficient, which leads to several scientific studies being carried out. Magnetic silica nanoparticles have excellent properties, enabling application in different fields including nanoscience. In this context, this work aimed to synthesize and characterize nanosilica with magnetic properties, in order to evaluate of the cytotoxicity in L929 cell line. The methodology for incorporation of magnetic nanoparticles proved to be fast and effective for obtaining the magnetic nanosilica (Nano SiO2.Fe3O4). Through the characterization of FTIR, and exposure of the magnetic field it was possible to verify the incorporation of ferrite in the nanosilica, as well as the XRD technique, the reduction of the particle size and the degree of crystallinity was evidenced. It was possible to verify that the synthesized nano SiO2.Fe3O4 showed to be safe in the treatments with lower concentrations with less amount of incoporated ferrite. Nevertheless, more characterizations and studies will be developed to determine the safety and therapeutic efficacy of this magnetic nanoparticles.
Effects of Carbon Reduction Labels: Evidence from Scanner Data

We investigate the effects of carbon reduction labels using a detailed scanner data set. Using a difference-in-differences estimation strategy, we find that having a carbon label has no impact on detergent prices or demand. We also investigate possible heterogeneous effects of carbon labels using the synthetic control method. We find no evidence to indicate that the prices for the counterfactual detergents without the label would have been any different from the prices of the carbon-labeled detergents. We investigate the reasons for these results and conclude that the specific design of the carbon label is responsible for its lack of success.
Aggregation and Stabilization of Carboxylic Acid Functionalized Halloysite Nanotubes (HNT-COOH)

We modified the functional groups of holloysite nanotubes (HNT) from hydroxyl groups (HNT-OH) to carboxylic acids (HNT-COOH). Aggregation and dispersion properties of HNT-COOH under dry conditions were probed by scanning electron microscopy (SEM) and atomic force microscopy (AFM). Moreover, the degree of aggregation and dispersion of HNT-COOH in acidic, basic, and neutral solutions were measured by multiple angle polarized dynamic light scattering (MA-DLS). HNT-COOH formed aggregates in neutral solution; however, the material was dispersed in basic and acidic solutions. This occurrence is due to hydrogen bonds (HB) between the carboxyl groups of HNT-COOH in neutral solution, which decrease in acidic and basic solution due to charge dispersion.
Wetting and adsorption properties of cetyltrimethylammonium bromide and Triton X-100 mixture with short-chain alcohol in polymer–solution–air system

Abstract Measurements of the contact angle of the aqueous solutions of Triton X-100 (TX-100) and cetyltrimethylammonium bromide (CTAB) mixture with methanol or propanol on the polytetrafluoroethylene (PTFE) and nylon-6 surfaces were made. On the basis of the obtained results, the Gibbs surface excess concentration of alcohol and TX-100 + CTAB mixture at the polymer–solution and polymer–air interfaces was calculated and compared to that at the solution–air one. The standard Gibbs free energy of alcohol adsorption was determined by different methods. For TX-100 and CTAB mixture, this energy was calculated using the values of critical micelle concentration (CMC) of that mixture, the surface tension and contact angle of aqueous solution of alcohol as well as the surface tension and contact angle of the aqueous solution of TX-100 and CTAB mixture with alcohol at CMC. The polymer–solution interfacial tension, the adhesion tension, and the adhesion work of the studied solutions to the polymer surface were also determined. From the obtained data, it results that the studied solutions can wet completely only the nylon-6 surface and that below alcohol critical aggregation concentration the adsorption of surfactants and alcohols at the polymer–water and water–air interfaces is similar for PTFE and different for nylon-6.
SEOs by Systemically Risky Banks: Do They Produce Stabilization Effects?

Analyzing the stock return reaction for issuing and non-issuing US banks, we explore the systemic effects of seasoned equity offerings (SEOs) by systemically risky banks. We find that SEOs do not generate value benefits for systemically risky issuers. In contrast, non-issuers’ stock returns react positively when systemically risky banks raise equity, although less so in times of systemic distress. The benefits for non-issuers are amplified by more business similarity with the systemically risky issuer and sustain in the longer term. Our findings reflect positive systemic externalities from a reduced deleveraging risk of the issuer. Overall, our analysis justifies regulatory pressure on systemically risky banks to implement countercyclical recapitalization through SEOs, especially in more homogenous banking systems.
The Influence of Financial Flexibility on Enterprise’s Profitability in the Future

With the increasing uncertainty of the contemporary economic market economy, its importance has become increasingly prominent in practice. In order to study the influence of financial flexibility on the enterprise's future profitability, this paper uses factor analysis to measure the enterprise's comprehensive profitability index, and uses two single indicators to measure the enterprise's financial flexibility. Then the effect of financial flexibility on the profitability of nonferrous metals listed companies is examined by using the bidirectional fixed effect model. The empirical results show that the influence of financial flexibility on profitability has a lag effect; Financial flexibility has a positive correlation with corporate profitability, that is, companies with relatively large financial flexibility have relatively greater profitability, and companies with relatively small financial flexibility have relatively small profitability. Keywords—Financial flexibility; Future profitability; Factor Analysis; Bidirectional fixed effect model
Research on the Sustainable Heterogeneous Catalyst Development for Photocatalytic Treatment of Phenol

A large amount of wastewater from various and discharged sources that are not treated in any way could affect properties of both land and water, causing severe problems for the environment. Advanced oxidation processes seem to be a feasible option to address effluent treatment with regard to salvation of the environment. In this work, a CdO/ZnO/Yb2O3 composite composed of trimetallic semiconductors was synthesized through a simple one-pot hydrophile approach at low temperatures and then was employed as a photocatalyst. The degradation of phenol, a common organic persistent pollutant in industrial wastewater, was efficiently catalyzed in the presence of simulated sunlight. It was demonstrated that the synthesized CdO/ZnO/Yb2O3 photocatalyst was significantly active after 15 min of reaction and facilitated the effective degradation of the phenol. The CdO/ZnO/Yb2O3 photocatalyst achieved 71.5% and 97.81% degradation of the phenol without and with the existence of H2O2, correspondingly. The results show that the synthesized composite possesses high oxygen reduction capability and is available for rapid and potent photodegradation of the organic persistent pollutants such as phenol, with minimal damage to the environment.