Miracle-dz/UniFAR-FTUs huggingface dataset:
Leukemic cell detection model based on deep learning

This project examines the feasibility of building a deep learning model that can accurately distinguish leukemic cells from normal cells, as well as the viability of analyzing the black box model so as to explain it in human terms. An accurate and explainable model can be deployed in areas previously inaccessible to the limited existing methods of detecting leukemia in its early stages. It is acknowledged that this is a very difficult process, as cells from individuals vary and cancerous cells are highly morphologically similar to normal cells. There are two major steps to this project. First, we built the cell classification model by supervised training on a convolutional neural network with provided labeled training data. Many parameters had to be adjusted to yield better results when tested on separate testing data. Second, we created a program designed to help explain the neural network, and the model is inserted into the program and tested on multiple examples. We examined the results, which highlighted regions the algorithm deems important in making its decision, and attempted to explain the algorithm as much as possible. Though far from perfect, the results are intriguing. Our algorithm had an accuracy of 68% on the testing data set. This is clearly suboptimal; however, this is also significantly higher than random results, demonstrating that our algorithm learnt useful processes and that this research direction is worth exploring further. The main difficulty is the aforementioned similarity between leukemic and normal cells; thus, the training process must be complex and fine-tuned to yield good results. After analyzing the results from the explanation program, we determined that our algorithm focuses on the contour of cells in its decision-making process, especially unsmooth or protruded sections. To conclude, our algorithm is far from the level required for practical applications; however, we demonstrated that such algorithms are possible and can be explained.
INTERACTION OF ORGANIC PHOSPHORUS WITH CLAYS EXTRACTED FROM OXISOLS

In highly weathered soils, such as tropical soils, organic phosphorus (P) may decline together with total P and could be represented by a relatively lower amount of inositol phosphates compared with temperate soils. The aim of this work was to understand the abiotic processes leading to inositol phosphate retention in highly weathered soils. Sorption of myo-inositol hexakisphosphate and inorganic phosphate (Pi) on two clay fractions (A and B) extracted from Brazilian oxisols was studied, examining both the extent of P retention and surface property modifications induced by anion sorption. The two clays were characterized by a high amount of crystalline iron oxides and kaolinite. In clay A, gibbsite was also present, plus a higher amount of organic matter. The two clays presented a similar specific surface area, but clay A had a lower microporosity. The amount of Pi sorbed on the two clays was similar, reaching a plateau at about 1.35 &mgr;mol m−2, whereas the amount of myo-inositol hexakisphosphate was higher on clay A, 0.67 &mgr;mol m−2, than clay B, 0.49 &mgr;mol m−2. The retention of both P forms on the two clays was linked to the large presence of crystalline Fe and Al oxides. Whereas Pi adsorbed on the external surfaces and diffused into micropores, myo-inositol hexakisphosphate likely adsorbed only on the external surfaces. The precipitation of Al and Fe myo-inositol hexakisphosphate was also limited because of the small amounts of soluble Al and Fe forms. All these phenomena may contribute to justify the relatively low accumulation of these organic P compounds found in some highly weathered soils.
Studies of the electrodeposition of cobalt on a vitreous carbon electrode

Neste trabalho foram feitos experimentos usando tecnicas de voltametria ciclica e pulso de potencial para o estudo do mecanismo de deposicao do cobalto em meio de sulfato. A voltametria ciclica mostrou dois picos de dissolucao, o que foi atribuido a dissolucao de uma fase rica em hidrogenio e outra do metal quase puro. A analise cinetica das curvas I-E na varredura reversa mostraram que, para uma solucao com 0,37 M Co(II) e pH 6, o potencial de equilibrio do par Co/Co(II) e -0,58 V vs. SCE e a corrente de troca, Io = 4,8 x 10-6 A cm-2. Os experimentos de pulso de potencial mostraram que o deposito de cobalto sobre o eletrodo de carbono vitreo apresenta nucleacao progressiva seguido de crescimento tridimensional. Ambas as tecnicas confinnaram que a deposicao do cobalto acontece em duas etapas, com a transferencia de um eletron cada.
Determination of Pantoprazole in Pharmaceutical Formulations and Human Plasma by Square‐Wave Voltammetry

Abstract A simple, sensitive, and selective square‐wave voltammetric method was developed for the determination of pantoprazole. The influence of the nature of the supporting electrolyte solution, pH, modulation amplitude, frequency, and scan increment was examined by square‐wave voltammetric method for pantoprazole. The best results were obtained in Britton‐Robinson buffer of pH 5.0. The peak currents were measured with hanging mercury drop electrode at −987 mV vs. Ag/AgCI. The calibration curve for pantoprazole was found as linear at a concentration range from 0.15 to 25.23 µg mL−1. The limit of detection and the limit of quantification of pantoprazole were 0.048 µg mL−1 and 0.15 µg mL−1, respectively. The validation parameters of the proposed method were evaluated. The method was applied to the pharmaceutical formulation and to both spiked plasma and the plasma of patients orally administered pantoprazole. A spectrophotometric method reported in the literature was utilized as a comparison method. There were no significant differences between the results obtained by two methods.
A Research Based On POT-CAViaR Model of Extreme Risk Measure

Abstract In this paper, the CAViaR model was used to measure the HS300, HSI and N225 risk levels and result showed that CAViaR model was able to measure the sample risk value at the 5% confidence level. However, at the 1% confidence level, the CAViaR model severely underestimated the sample risk value. In order to solve this question, this paper introduces the POT model and CAViaR model to construct the extreme risk measure model based on POT-CAViaR model and the test shows that the improved model can effectively improve the accuracy of extreme risk prediction and the model validity is strengthened.
Life Skills Education Program: Is it Beneficial for the Society?

The life skills education program was created to answer the poverty and unemployment problems faced by those without access to formal education. The research is aimed at evaluating the implementation effectiveness of the life skills education program at the Course and Training Institutions. This research uses the qualitative approach with the evaluative method. The evaluation model used is a model developed by Stufflebeam, namely CIPP model (context, input, process, product) but this article only focuses on the product evaluation. The results of this study indicate that the result of the program did not run as expected as the program partcipants absorped by formal employment nly numbers 18% while the others were only working as part times employment. The result also recommend that the program developer needs a very careful judgement when choosing the Course and Training Institutions executing the program. The research at the product stage showed that most of the program alumni don’t enter to formal sector. The novelty and contribution of this research is the creation of an evaluation model using the AIR method (Achievements, Issues and Recommendations) which will facilitate further researchers and related parties in utilizing the results of this study.
The Role of Trust in Student Perceptions of University Sexual Assault Policies and Services

Many post-secondary institutions are developing policies and programs aimed at improving responses to sexual assault experienced by students. In some areas, such as Ontario, Canada, the government has mandated post-secondary institutions to do so. However significant these initiatives, they are predicated on the assumption that students trust, and want to engage with, the university following sexual violence. This study explores students’ perceptions of sexual assault policies and services on one mid-size university campus focusing specifically on how trust factors into reporting sexual victimization and using services. Findings show that students believe that sexual assault policies and programs exist, but this does not meanstudents are willing to use such resources or that they even trust that their university has students’ needs and interests at the fore. This paper discusses policy and programmatic considerations for building student trust in their post-secondary institutions to encourage student use of campus support.
Spin-Valve Memory Elements Using [{Co-Pt/Cu/Ni-Fe-Co}/Cu] Multilayers

A new type of magnetoresistive memory using spin-valve multilayers composed of semi-hard magnetic layers and soft magnetic layers separated with nonmagnetic layers was developed. The fabricated memory element was composed of a word line of Au film and a magnetoresistive sense line of [{CoPt/Cu/NiFeCo}/Cu]N multilayers. This spin-valve memory has nonvolatile and nondestructive readout properties.
Synthesis of Core Cross-Linked Star Polymers Consisting of Well-Defined Aromatic Polyamide Arms

Homopolymer-arm, block-arm, and miktoarm star polymers consisting of poly(N-octyl-m-benzamide) and poly(N-H-m-benzamide) were synthesized by means of a core cross-linking method. Macromonomers (MM) with the styryl terminal moiety were synthesized by chain-growth condensation polymerization of 3-(alkylamino)benzoic acid esters 1 in the presence of phenyl 4-vinylbenzoate as an initiator, and copolymerization with N,N′-methylenebis(acrylamide) as a divinyl monomer in the presence of 2,2′-azobis(isobutyronitrile) at 60 °C yielded the corresponding star polymers. In the synthesis of star polymers containing poly(N-H-m-benzamide) arms, the 4-(octyloxy)benzyl group on the amide nitrogen of the obtained star polymers was removed with trifluoroacetic acid. The number of arms per molecule, determined by multiangle laser light scattering, varied in the range of 36−100 depending on the N-alkyl group of 1 and the molecular weight of MM. The 1H NMR spectra of the star polymers in dimethyl sulfoxide revealed that the po.
Structure of mono‐ and multilayer Langmuir–Blodgett films from Cd arachidate and Ca arachidate

Langmuir–Blodgett (LB) films of Cd arachidate and Ca arachidate with thicknesses of 1, 3, 9, and 25 layers were investigated using near edge x‐ray absorption fine structure (NEXAFS spectroscopy), small angle x‐ray scattering (SAXS), and reflected high energy electron diffraction (RHEED). The results from the x‐ray diffraction experiments on layer thickness and interface roughness complement the structural information from NEXAFS on the average tilt angle of the alkyl chains in real space. The RHEED measurements confirm these findings and give additional information on the lateral order in these organic films. We find that the monolayer film shows a substantial degree of disorder, while for three and more LB layers, the molecular orientation is virtually identical to that of the corresponding fatty acid salts, i.e., the hydrocarbon chains are oriented perpendicular to the substrate surface in an all‐trans conformation. Furthermore, a simplified and more robust analysis scheme for NEXAFS data obtained for h.
Microscopic fused silica capillary nozzles as supersonic molecular beam sources

Use of fused silica microcapillary tubing for supersonic molecular beam nozzles is reported. Speed ratio measurements were made with nozzles of various diameters and sidewall profiles, demonstrating that these nozzles perform as well as the best conventional nozzles. Commercial microcapillary nozzles therefore offer an effective and inexpensive alternative to conventional metal nozzles.
PV Fed Sepic Triple-Lift Converter System - A Comparative Study

: Power converter design based on voltage-lifting (VL) techniques avoid taking a too high value of operating duty for producing large voltage conversion ratio. This study is aimed in determining the voltage boosting ability of a soft-switched single ended primary inductor converter (SSSEPIC) integrated with triple-lift converter system (TLCS). Simulation of SSSEPIC-TLCS is performed in open loop and with source disturbance by developing a Matlab Simulink model. The converter performance is studied with regard to voltage gain, ripple content present in output voltage and power output. Furthermore, the SSSEPIC-TLCS is compared with the results of elementary SEPIC, self-lift, double-lift and re-lift converter reported in literature so as to find a system with high power output and low output voltage ripple. A T-filter is connected at the output to minimize ripple content. Comparative results reveal that combination of SEPIC with re-lift system produces higher output than other VL methods and therefore it is a good substitute for the existing step-up converters. Moreover, the results suggest that there has only been a marginal difference in voltage gain and power output between triple-lift and double-lift converter system. (TLCS), lifting (VL)
Preparation of superhydrophobic nanodiamond and cubic boron nitride films

Superhydrophobic surfaces were achieved on the hardest and the second hardest materials, diamond and cubic boron nitride (cBN) films. Various surface nanostructures of nanocrystalline diamond (ND) and cBN films were constructed by carrying out bias-assisted reactive ion etching in hydrogen/argon plasmas; and it is shown that surface nanostructuring may enhance dramatically the hydrophobicity of ND and cBN films. Together with surface fluorination, superhydrophobic ND and cBN surfaces with a contact angle greater than 150° and a sliding angle smaller than 10° were demonstrated. The origin of hydrophobicity enhancement is discussed based on the Cassie model.
Fibromyalgia in Patients with Psoriasis

Background: Fibromyalgia syndrome (FMS) and widespread pain are observed in many patients with autoimmune and inflammatory disorders. FMS may be underestimated in psoriasis, but not psoriatic arthritis. The aim of this study was to investigate the prevalence of fibromyalgia and allied symptoms in patients with psoriasis. Patients and methods: Seventy patients with psoriasis (40 male and 30 female) and 70 age and sex matched controls were enrolled in the study. Psoriatic area and severity index (PASI) was calculated for patients. A two stage classification process was applied to determine the presence of FMS in patients with psoriasis and controls. Stage 1: was answering the diffuse widespread pain questionnaire. In Stage 2, all patients with widespread pain were examined for 18 tender points. Results: A total of 37 (52.9%) patients with psoriasis were found to have widespread pain. A total of 21 patients met the criteria of FMS with a prevalence rate of 30.0%; of them, 18 (85.7%) were women. Conclusions: FMS and allied symptoms are more prevalent in patients with psoriasis than in the general population. Women with psoriasis are more frequently affected by FMS than are men. Awareness of this comorbidity is an essential part in the treatment of psoriasis. Because of the strong association between disease severity and FMS, proper treatment that reduces skin involvement and disease severity may be associated with the alleviation of FMS and its allied symptoms.
Cultivation of Mixed Microalgae Using Municipal Wastewater: Biomass Productivity, Nutrient Removal, and Biochemical Content

Background: Microalgal biotechnology has gained much attention previously. Monoculture algae cultivation has been carried out extensively in the last decades. However, although the mixed microalgae cultivation has some advantageous over pure cultures, there is still a lack of knowledge about the performance of mixed cultures. Objective: In this study, it has been tried to investigate all growth aspects of marine and freshwater microalgal species in a mixed culture and their biological effects on biomass growth and composition based on wastewater nutrient consumption. Material and Methods: Three algal species of Chlorella vulgaris, Scenedesmus obliquus, and Nannochloropsis sp. were cultivated in saline wastewater individually, then the effects of mixing the three strains on biomass productivity, nutrient removal efficiency, chlorophyll, carotenoid, and lipid content were investigated. Results: The obtained results revealed that the mixed culture of three strains showed the highest biomass productivity of 191 mg. L-1.d-1. Also, while there were no significant differences between the performance of mono and mixed culture of algal species in the removal efficiency of wastewater nutrients, the three-strain microalgal mixed culture showed the highest values of 3.5 mg.L-1.d-1 and 5.75 mg.L-1.d-1 in the removal rate of phosphate and nitrate, respectively. In terms of total chlorophyll and carotenoid per produced biomass, however, the mixed culture of three species showed the lowest values of 4.08 and 0.6 mg. g biomass-1, respectively. Conclusions: The finding proves the potential of attractive and economically feasible mixed microalgae cultivation for high percentage nutrient removal and microalgal biomass production.
Synthesis of Visible Light-Sensitive ZnO Nanostructures: Subwavelength Waveguides†

Single crystalline ZnO nanowires and nanorods were synthesized by a new sol—gel method carried out through formation of liposome-ZnO nanocomposites with or without hydrothermal reaction, respectively, and they were characterized to be hexagonal wurtzite structure by measurements of XRD patterns and SEM and TEM images. The UV—visible absorption spectrum of the nanowires was observed to exhibit a very high absorptior of visible light from 400 to 600 nm as compared to that of the nanorods. The photoluminescence (PL) images and spectra of the single nanowires and nanorods were measured upon excitation with a 415 nm femtosecond-pulsed laser beam by a confocal scanning microscope—coupled PL spectral system, and the single nanowires were observed to exhibit waveguided red-emission at the tip whereas unguided emission only was observec by UV-excitation. Analysis of the dependence of nanowire length on the waveguide mode spacing indicated that the subwavelength waveguide is operated by the axial Fabry-Perot-type microcavity resonance. These results demonstrated that the ZnO nanowires can exhibit the subwavelength waveguide behavior as long as the defects are excited directly with visible light, suggesting that the present ZnO nanowires will be a promising nanomaterial for future visible light-sensitive lasing cavity and optoelectronic devices.
Multidimensionality of EFL Recreational Reading Attitudes: An EFA and CFA Approach

Because an understanding of reading attitude is pivotal to reading encouragement, this study investigated the multidimensionality of recreational reading attitude among Jordanian EFL students. A survey of recreational reading attitudes was administered to 225 EFL tertiary students at the University of Jordan. The responses to the 10-item survey were factored using (1) exploratory factor analysis (EFA) and 2 factor dimensions were obtained for the recreational reading attitude: efferent (cognitive) and aesthetic (affective). Results were, then, validated using (2) confirmatory factor analysis (CFA) using IBM Amos 23. Results provide statistical evidence and a confirmation through using mixed statistical approaches (i.e., EFA and CFA) that the recreational reading attitude of EFL students is multidimensional, which will yield a better understanding of how attitudes can affect EFL students’ engagement in reading and choices of reading materials, thus introducing a new definition for recreational reading attitudes to encompass their multidimensional nature.
Rigorous formulation of quantum transition state theory and its dynamical corrections

We describe a procedure for computing the thermal rate constants for infrequent events that occur in complicated quantum mechanical systems. Following the ideas of Gillan, the procedure focuses on the equilibrium statistics of the centroids for the imaginary time quantum paths. We argue that the imaginary time statistics can be used to efficiently bias Monte Carlo sampling of the real time reaction dynamics. Consideration of imaginary time paths or equilibrium statistics alone leads to a quantum transition state theory. Analytical versions of this transition state theory are developed with the aid of a variational principle. Numerical applications of the quantum transition state theory are given for the one‐dimensional Eckart barrier problem and for the nonseparable two‐dimensional collinear H2+H reaction. Remarkably accurate results are obtained. The quantum transition state theory we describe provides a rigorous basis and generalizes algorithms recently employed to treat electron transfer and also ionization in polar media.
A Summary of analysis and application research on the spatial distribution of POI data based on urban service industry

Data mining and data analysis based on POI data of urban service industry has gradually become the research trend of urban spatial layout. In the present study, many scholars use different research methods to analyze the agglomeration characteristics and development trend of urban service industry from multiple perspectives. This article combines POI data analysis methods and application fields to summarize the relevant research of urban service industry POI data analysis and application and summarizes the representative research methods of POI data analysis, and compares the characteristics of each method, and then the development trend of POI data mining, analysis and application in urban service industry is prospected.
Force Spectroscopy Study on Poly(acrylamide) Derivatives: Effects of Substitutes and Buffers on Single-Chain Elasticity

Single-chain elasticity of two important poly(acrylamide) derivatives, poly(N,N‘-dimethylacrylamide) (PDMA) and poly(N,N‘-diethylacrylamide) (PDEA), was investigated by an atomic force microscopy (AFM)-based single molecule force spectroscopy (SMFS). SMFS revealed that the single chain of PDEA was stiffer than that of PDMA due to different bulky substitutes. It was also found from the SMFS study that the elasticity of PDMA and PDEA was enhanced in urea buffer solutions, probably due to hydrogen-bond interactions between urea molecules and the side groups of poly(acrylamide) derivatives.