Miracle-dz/UniFAR-FTUs huggingface dataset:
Investigation of Gold Quantum Dot Enhanced Organic Thin Film Solar Cells

Gold quantum dots (AuQDs) are employed as photosensitizers in organic thin‐film solar cells (OSCs) to improve their photoelectric conversion properties. Three types of AuQDs with different fluorescence emission wavelengths are used: blue (B‐AuQDs), green (G‐AuQDs), and red (R‐AuQDs). AuQDs are loaded into the poly(3,4‐ethylenedioxythiophene):poly(styrene sulfonate) thin‐film layer of OSCs. UV–vis spectra, atomic force microscope images, current density–voltage characteristics, and impedance spectra of the fabricated devices are measured for the three aforementioned types of AuQDs. All types of AuQDs improve the photoelectric conversion properties, and the G‐AuQD‐loaded OSCs exhibit the best improvement, exhibiting an efficiency increase of 10% compared with OSCs without the AuQDs. The fluorescence/photosensitization of the AuQDs plays an important role in the enhancement of the OSCs. Finite‐difference time‐domain simulations indicate increased electric field intensity due to a small degree of AuQDs aggregation.
Combined application of biochar with compost and fertilizer improves soil properties and grain yield of maize

ABSTRACT A pot study was conducted to assess the combined effect of biochar (B) with compost (Com) and inorganic fertilizers (F) for improving nutrient acquisition and productivity of maize. Seven different treatments, including B (1% w/w), F (Recommended nitrogen, phosphorus and potassium (NPK): 60, 30 and 25 mg kg─1), Com (1.5% w/w), Com+F (1.5% + NPK), B+F (1% + NPK), B+Com (0.5% + 0.75%), B+Com+F (0.5% + 0.75% + NPK) along with a control (C) without B, Com and F were applied in pots with four replications. The results showed that growth and grain yield of maize increased by the application of B, Com and F compared with C, but B+Com+F was more effective than their sole application (i.e. B, Com and F). Highest leaf chlorophyll content, gas exchange attributes and nutrient concentrations: N, P and K in shoot and grains were observed, where B+Com+F was applied followed by Com+F > B+F > B+Com > F > Com > B > C. Soil properties such as soil organic carbon (SOC), N, P, and K were significantly increased, whereas soil pH was decreased by the combination of B with Com and F. Hence, application of B in combination with Com and F (B+Com+F) could be a good management strategy to enhance crop productivity and improve soil properties.
Microstructures and Dielectric Constants of Ba0.05SrxCa0.95-xTiO3 (x=0, 0.225, 0.475, 0.725 and 0.95) Synthesized by the Solution Combustion Technique

Barium strontium calcium titanate is a dielectric material exploited in fabrication of electronic devices such as capacitors, signal filters and satellite components. Dielectric properties can be enhanced through compositional and microstructural control. This study, therefore, aimed at synthesizing barium strontium calcium titanate (Ba0.05SrxCa0.95-xTiO3, where x = 0, 0.225, 0.475, 0.725 and 0.95) powders by a solution combustion technique. The powders were pressed, sintered at 1450°C and tested for their properties. Experimental results revealed that strontium content did not significantly influence chemical composition, particle sizes and density. All powders exhibited a single phase corresponding to Ba0.05SrxCa0.95-xTiO3 with fine particles with the average size smaller than 0.4 micrometer. All sintered samples had density higher than 95% of theoretical density. On the contrary, the results indicated that strontium content affected grain size, grain morphology and dielectric constant of the sintered samples. The highest dielectric constant of 531 (at 1 MHz) was achieved in the Ba0.05Sr0.225Ca0.725TiO3. Dielectric constant was discussed with respect to microstructure.
Synthesis and Application of Monoazo-Anthraquinone Disperse Dyes on Polylactide Fibres

1-Substituted-2-hydroxy-4-methyl-5-cyano-6-pyridone-azo-antharaquinone disperse dyes having high light fastness on polylactide fibres were synthesized from 1-anthraquinone via a diazotization-coupling reaction with substituted pyridones. Â The structures of these dyes were confirmed using IR spectroscopy. Â Their dyeing behavior on polylactide fibres was also determined whereupon it was found that the title dyes could be applied at temperatures of 90 to 100 oC and that the corresponding dyed fabrics had good fastness properties.
Keefektifan Pendekatan Pendidikan Matematika Realistik Indonesia terhadap Kemampuan Literasi Numerasi Siswa di Sekolah Dasar

PMRI merupakan pendekatan yang mengarahkan siswa dalam menemukan sendiri konsep pemecahan masalah matematika dan mengaplikasikan konsep tersebut dalam kehidupan sehari-hari. Secara umum konsep tersebut berkaitan dengan kemampuan literasi numerasi yang dimiliki oleh siswa. Untuk itu tujuan penelitian ini adalah untuk mendeskripsikan keterlaksanaan proses pembelajaran dan keefektifan pendekatan PMRI terhadap kemampuan literasi numerasi siswa pada materi operasi hitung bilangan bulat di UPT SDN 106 Gresik. Jenis penelitian yaitu pre experimental designs dengan bentuk penelitian one group pretest-posttest design. Penelitian dilaksanakan dengan menggunakan soal pretest-posttest, observasi dan angket. Berdasarkan penelitian didapatkan bahwa pendekatan PMRI efektif untuk digunakan. Hal ini sesuai dengan nilai rata-rata N-gain kemampuan literasi numerasi siswa pada materi operasi hitung bilangan bulat diperoleh sebesar 0,594155 berada dalam kategori sedang yaitu pada kisaran 0,30 - 0,70. Sedangkan, hasil obervasi keterlaksanaan guru dalam proses pembelajaran mulai pendahuluan, kegiatan inti, dan penutup sudah terlaksana dengan baik
Contactless Asphaltene Detection Using an Active Planar Microwave Resonator Sensor

In this paper, a noncontact real time method for asphaltene concentration measurement and precipitation detection is presented. An active high sensitivity microwave resonator sensor is utilized to monitor asphaltene particles and its complex permittivity at 1.2 GHz. The sensor utilizes a microstrip microwave resonator with an active feedback loop to compensate for the environmental loss and to enhance the quality factor of the sensor by several orders of magnitude (>10K). The sensor is utilized to directly measure the concentration of the liquid through monitoring its complex permittivity. It is also illustrated that time-based measurements can be used to increase the accuracy by providing two independent data sets, i.e., concentration and time constant. Next, heptane is mixed with different concentrations of asphaltene and monitored in real time. The results demonstrate the capability of noncontact measurement of the precipitation process at different asphaltene concentrations. The findings exhibit a sub.
HheG, a Halohydrin Dehalogenase with Activity on Cyclic Epoxides

Halohydrin dehalogenases (HHDHs) are of biotechnological interest due to their promiscuous epoxide ring-opening activity with a set of negatively charged nucleophiles, enabling the formation of C–C, C–N, or C–O bonds. The recent discovery of HHDH-specific sequence motifs aided the identification of a large number of halohydrin dehalogenases from public sequence databases, enlarging the biocatalytic toolbox substantially. During the characterization of 17 representatives of these phylogenetically diverse enzymes, one HHDH, namely HheG from Ilumatobacter coccineus, was identified to convert cyclic epoxide substrates. The enzyme exhibits significant activity in the azidolysis of cyclohexene oxide and limonene oxide with turnover numbers of 7.8 and 44 s–1, respectively. As observed for other HHDHs, the cyanide-mediated epoxide ring-opening proceeded with lower rates. Wild-type HheG displays modest enantioselectivity, as the resulting azido- and cyanoalcohols of cyclohexene oxide ring-opening were obtained in .
KINETIC STUDIES OF COPPER IONS REMOVAL FROM AQUEOUS SOLUTIONS USING VARIOUS BIOSORBENTS FILLING PERMEABLE REACTIVE BARRIERS (PRBs)

The applicability of agricultural waste by-products for the removal of copper ions from contaminated groundwater has been examined in batch kinetic systems. A series of experiments were conducted to evaluate the effect of time and the initial pH value on copper uptake rates and contact times needed to achieve equilibrium. The experimental results have indicated that apple and tomato peels have better sorption properties than plum stones. For these objects, the adsorption capacities of copper at equilibrium and at pH of 6 are 1.5451 mg Cu(II)/g, 1.2471 mg Cu(II)/g, and 0.7664 mg Cu(II)/g, respectively. The test results were best fitted by the pseudo-second order kinetic model (R 2 ≥0.9987), which indicates the chemical nature of the process. The removal ratio R (%) of copper from aqueous solutions was: 1) 48.68% for plum stones; (2) 78.67% for tomato peels; and (3) 97.92% for apple peels. Equilibrium in the solutions was established after 30, 300 and 420 minutes, respectively. Additionally, it has been discovered that the initial pH level affected the efficiency of the adsorption processes. According to the test results, apple peels and tomato peels have relatively good adsorption properties for copper ions removal from aqueous solutions.
Enhancing Brain Tumor Detection with Gradient-Weighted Class Activation Mapping and Deep Learning Techniques

Brain tumors are a leading source of morbidity and mortality worldwide, and early identification and precise diagnosis are essential for enhancing patient outcomes. The most frequent approach for detecting brain tumors is magnetic resonance imaging (MRI), although it can be difficult to precisely identify tumors from pictures. In this article, we present a deep-learning approach for brain tumor diagnosis using MRI data. Our method employs a Deep Convolutional Neural Network (DCNN) architecture to precisely detect and classify brain malignancies, and gradient-weighted class activation mapping (Grad-CAM) to visualize data in the brain tumor area. Our objective is to support patients with tumors or assist medical personnel with patient diagnostics. Using a dataset from Kaggle, including 2114 brain MRI images, we analyze our method that achieved a high level of accuracy (97%), coupled with great precision. Our results illustrate the efficacy of our proposed method for brain tumor diagnosis, and the use of Grad-CAM enables us to observe the areas of the brain most strongly related to tumor detection, providing doctors with significant insights. Additionally, with the proper modification of parameters, our study may be utilized to identify infectious illnesses.
Historia de la deuda externa argentina: De Martínez de Hoz a Macri

Fil: Brenta, Noemi Liliana. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Oficina de Coordinacion Administrativa Saavedra 15. Instituto de Estudios Historicos, Economicos, Sociales e Internacionales. Instituto de Investigaciones de Historia Economica y Social; Argentina
INFLUENCE OF POTASSIUM LEVELS AND SOME ANTI-SALINITY MATERIALS ON SWEET PEPPER GROWN IN SANDY SOIL AND IRRIGATION WITH HIGH SALINTY WATER UNDER NORTH SINAI CONDITIONS

The present work was carried out during the two successive seasons of 2013 and 2014 at the Agriculture Research Station of Hortic. Dept., Agric. Res. Center, in El- Arish, North Sinai Governorate, Egypt. Sweet Pepper (Capsicum annum L.) Local hybrid "Fares" was used in this study . The objective of the experiments was to study the effect of four potassium rates i.e., 200 (K1)/fed. , 250 (K2)/fed. , 300 (K3)/fed. , and 350 (K4)Kg/fed. from potassium sulfate 48%) with four treatments of foliar spray by some anti-salinity using (1g/ l-1 Zinc, 5 cm/ l-1 Humic acid, and 0.5g/ l-1 Salicylic acid, and beside the control) under sandy soil which irrigated with high salinity water and saline water irrigation in North Sinai, on the growth, yield and some chemical contents in leaves and fruits of pepper plants as well as fruit quality. Split plot design was used in the experiment. The results showed that all growth parameters, gave the highest values with application of potassium level at the rate of 350 Kg per fed. with foliar spray by any of Humic acid 5 cm/ l-1, Salicylic acid 0.5g/ l-1, and ZN 1g/ l-1 , respectively as well as all fresh and dry weights of pepper plant organs expressed in roots, leaves, and stems, as well as clusters fresh weight and both total fresh and dry weight of pepper plants in the both seasons compared to application of potassium the other levels at (K1, K2 and K3) with any of foliar spray of (Zn, Humic and Salicylic acids). Application of the high potassium level (350 Kg per fed.) with the foliar spray by Humic acid, Zn, and Salicylic acid, showed a significant increase in marketable yield of fruit weight per plant (g), number of fruits per plant, average fruit weight as well as total yield per fed. in addition high potassium level (K4) with the foliar spray with any of salicylic acid, Humic acid and Zn, respectively gave the low contents of Na+ and proline in the leaves and fruits compared to the low levels of potassium in the both seasons. Application of potassium levels K4 or K3 with spraying by Zn, Humic acidand salicylic acid gave the highest values for V.C content and T.S. S in sweet pepper fruits.
Effect of initial water content and pore water chemistry on intrinsic compression behavior

ABSTRACT The effect of initial water content (w0) and pore water chemistry on the intrinsic compression curve of clays was investigated experimentally. The test results indicate that w0 had a considerable effect on the intrinsic compression curve of a clay, and the degree of the effect is a function of pore water chemistry. The fundamental mechanism of the effect of w0 and pore water chemistry on the intrinsic compression curve is through its influence on the microstructure of clays. For relatively stable flocculated microstructures, the effect of w0 will disappear under a small value of effective vertical consolidation stress, σ′v, for example, σ′v < 20 kPa; under one-dimensional deformation condition, but for a dispersive microstructure, the effect of w0 can remain up to σ′v > 1,000 kPa. Furthermore, it has been shown that when σ′v is larger than the remolded yield stress, almost all the test data follow the intrinsic compression line (ICL) proposed by Burland. Finally, based on the test data, a new equation for estimating void ratio () under σ′v = 100 kPa on ICL from the void ratio (el) corresponding to the liquid limit water content has been proposed.
Study on genetic variability, heritability and genetic advance in tomato (Solanum lycopersicum L Mill.)

The present investigation, genetic variability, heritability and genetic advance in tomato was undertaken in randomized Block design with three replications on twenty genotypes at the Nana Ji Deshmukh Krishi Farm the objective of the study was to evaluate genetic variability and heritability of traits among tomato accession based on quantitative traits. Thirty tomato acessession were planted in 2014-15 in randomized block design with three replications. Data on 15 quantitative traits were collected and subjected to various statistical analyses. As the study revealed, the estimates of phenotypic and genotypic coefficient of variation showed the presence of variability among the accessions for majority of the characters. High heritability coupled with high expected genetic advance in per cent of mean was observed for fruit yield per plant, fruit weight per plant, plant height and days to maturity.
Bandgap Engineering of InSe Single Crystals through S Substitution

Bandgap engineering offers opportunities for tailoring the properties of semiconductor materials for desired applications in microelectronics and optoelectronics. Alloys of different semiconductor materials can lead to the continuously tuning of the bandgap. Here, we report the bandgap engineering in layered InSe single crystals by substituting the Se atoms with S atoms. The formation of InSxSe1–x single crystal alloy with x ≤ 0.3 is evidenced by the X-ray diffraction and resonant Raman spectra. The photoluminescence (PL) spectra peak position blue shifts from ∼1.27 to ∼1.42 eV as S composition increases from 0 to 0.3 in the alloys, which is consistent with the bandgap shifts calculated by density functional theory. Temperature dependence of the PL spectra indicate that the presence of S atoms decreases the strength of the electron–phonon interaction but increases the average phonon energy in InSxSe1–x alloys. Our findings will open an intriguing avenue in understanding the fundamental physics in the III–.
The “Next” Effect: When a Better Future Worsens the Present

Various domains of life are improving over time, meaning the future is filled with exciting advances that people can now look forward to (e.g., in technology). Three preregistered experiments (N = 1,602) suggest that mere awareness of better futures can risk spoiling otherwise enjoyable presents. Across experiments, participants interacted with novel technologies—but, via random assignment, some participants were informed beforehand that even better versions were in the works. Mere awareness of future improvement led participants to experience present versions as less enjoyable—despite being new to them, and despite being identical across conditions. They even bid more money to be able to end their participation early. Why? Such knowledge led these participants to perceive more flaws in present versions than they would have perceived without such knowledge—as if prompted to infer that there must have been something to improve upon (or else, why was a better one needed in the first place? )—thus creating a less enjoyable experience. Accordingly, these spoiling effects were specific to flaw-relevant stimuli and were attenuated by reminders of past progress already achieved. All told, the current research highlights important implications for how today’s ever better offerings may be undermining net happiness (despite marking absolute progress). As people continually await exciting things still to come, they may be continually dissatisfied by exciting things already here.
Impact of point defects on electrochromism in WO3

Using hybrid density functional theory, we investigate the influence on electronic structure of common defects and impurities in tungsten oxide (WO3). As an easily reducible perovskite with the A-site atom missing, high concentrations of foreign dopants and oxygen deficiencies are possible. Our calculations show that both oxygen vacancies and alkali dopants are shallow donors, and we explore the physical origins for this behavior. In particular, we examine whether oxygen vacancies can give rise to localized states or small polarons. Our results show that in crystalline material no such charge localization occurs. We discuss how these results impact electrical conductivity and optical properties.
Investigation on the self-assembled behaviors of C18 unsaturated fatty acids in arginine aqueous solution

In the field of drug delivery, there is growing concern over the self-assembly of fatty acids, since their structures and properties are similar to liposomes, which are characteristically nontoxic for humans, possess good biocompatibility and biodegradation, and are without immunogenicity. Changes in pH, temperature, concentration, molecular structure of the amphiphilic molecule, head group type and hydrocarbon chain length have significant effects on the self-assembled structures; however, the degree of unsaturation can also influence the self-assembled structures of fatty acids. The aggregation behaviors of the mixtures of arginine and three kinds of unsaturated fatty acids (UFAs, oleic acid, linoleic acid and linolenic acid) in aqueous solutions have been investigated. Phase transition from transparent micelles (L1 phase) to birefringent bilayer structures (Lα phase) occurred with increasing amounts of UFAs. However, the Lα phase was different for macro and micro structures. Oleic acid with only one double bond was regarded as less flexible and curved, but with higher stacking, leading to a gradual phase transition process from the vesicle phase to the stacked lamellar phase in the Lα phase region, which could be proved by cryogenic transmission electron microscopy (cryo-TEM) and polarizing microscopy observations combined with 2H-nuclear magnetic resonance (2H NMR) and rheological properties. The turbid vesicle phase with weak viscoelastic properties were only observed in linoleic acid and linolenic acid systems because UFAs with more than one double bond are easier to bend, indicating that highly curved vesicles are likely to form. Through the analysis of the proposed mechanism and FT-IR spectra, the synergistic effects of non-covalent interactions, including hydrogen bonding, electrostatic interaction, and hydrophobicity, were considered to be responsible for the aggregation behaviors. Finally, vesicles displayed their potential in encapsulating water-soluble model drugs such as calcein. The results show that drug-loaded vesicles could play a role in the potential applications in drug sustained delivery systems.
[Analysis of the shoulder joint mobility in overhead sports before and after experimental treatment].

INTRODUCTION "Overhead" sports, characterized by predominant movements of the hands above the head, are associated with very dynamic, often acyclic movements and require strong muscles of humero-scapular regions with high mobility of the shoulder joint as well as flexibility and ability to relax these muscles. This study was aimed at analyzing the shoulder joint mobility before and after conducting kinesiology treatment for a period of 6 months. The research included two complex exercises. MATERIAL AND METHODS The study included 100 "overhead" sports male athletes, who were randomly divided into the experimental and control group, aged 14 to 18 years. The range of motion was measured in degrees by goniometer. We calculated the central and depression parameter. RESULTS There was a statistically significant difference inflexion, extension, abduction, adduction, external and internal rotation at the final measure in favor of the experimental group at the level of significance p<0.001, and some positive effects of the applied exercises were observed. DISCUSSION Kinesitherapy had positive effects on the elasticity of the connective tissue capsule, ligaments and tendons. Changes in the shoulder area f the "overhead" sports athletes can be reduced to the same extent and at the same time by stretching and strength exercises. CONCLUSION The authors of this paper have given their modest contribution by suggesting a more appropriate planning of training and performance of players at training and matches. This paper tries to emphasize the importance of proper incorporation of the corrective exercises in training.