Miracle-dz/UniFAR-FTUs huggingface dataset:
Application of the Volatility-TDMA Technique to Determine the Number Size Distribution and Mass Concentration of Less Volatile Particles

A Volatility-Tandem-Differential-Mobility-Analyzer (VTDMA) and a Differential Mobility Particle Sizer (DMPS) were used to determine the number and mass concentration of externally mixed aerosol particles in urban background air. In the VTDMA the less-volatile (LV) particle fraction was measured at 300°C for particles in the size range 20–250 nm. The LV particle fraction was converted to the number concentration of LV particles (NLV) and the mass concentration (MLV). MLV was compared with the mass concentration of black carbon (MBC) measured by a Multi-Angle Absorption Photometer (MAAP). The DMPS and VTDMA data were used for calculating scattering and absorption coefficients (σSP and σ AP) with a Mie model and compared with σ SP and σ AP measured with a TSI nephelometer and the MAAP. The model was run by assuming external and internal mixing of absorbing and scattering aerosol. The best fit of measured and modeled σ SP and σ AP was sought by varying the refractive index. During periods dominated by local emissions LV particle fraction ⟨ϕLV ⟩ was high ( >0.2). In these cases, the MLV and the modeled σ AP assuming external mixing agreed well with the measured MBC and σ AP, respectively. For the long-range transported aerosol ⟨ϕLV ⟩ was small ( <0.1) and MBC was higher than MLV. For the whole period the average (± std) refractive index was 1.55 (± 0.09) – 0.04 (±0.02)i when internal mixing was assumed. When ⟨ϕLV ⟩ was >0.2 the average refractive index of LV particles was 1.96 – 0.8 (±0.18)i when σ AP was modeled assuming external mixing.
Applying AHP to Classify Undergraduates Student’s Behavior Towards E-Learning

This study aims to determine the level of student behavior towards the use of e-learning. This study uses the Analytical Hierarchy Process method and the help of MS. Excel to process data with a population of students of the Faculty of Economics and Business, the University of Tadulako, and a sample of 84 respondents' class of 2018. Data collection techniques were carried out using the help of the Google form application to create question instruments with a Likert scale and then the link was distributed to students. The criteria used are Easy to Learn, Easy to Use, Flexibility, and Innovation. While the alternatives were chosen are Interest, Motivation, Achievement, and Effectiveness. The results obtained alternative motivation as an alternative with the highest weighting with a global weighting level of 2,033 ranked first, ranking second alternative interests with a global weight of 1,066, for the third-ranking occupied alternative achievements with a global weight of 0.565 while alternative effectiveness ranked last with a global weight of 0.336. Researchers focus on research on e-learning Schoology using the AHP method to classify student behavior in the use of e-learning.
Peristaltic Flow of Dusty Nanofluids in Curved Channels

In this paper, numerical investigations for peristaltic motion of dusty nanofluids in a curved channel are performed. Two systems of partial differential equations are presented for the nanofluid and dusty phases and then the approximations of the long wave length and low Reynolds number are applied. The physical domain is transformed to a rectangular computational model using suitable grid transformations. The resulting systems are solved numerically using shooting method and mathematical forms for the pressure distributions are introduced. The controlling parameters in this study are the thermal buoyancy parameter Gr, the concentration buoyancy parameter Gc, the amplitude ratio , the Eckert number Ec, the thermophoresis parameter Nt and the Brownian motion parameter Nb and the dusty parameters Ds; s. The obtained results revealed that an increase in the Eckert number enhances the temperature of the fluid and dusty particles while the nanoparticle volume fraction is reduced. Also, both of the temperature and nanoparticles volume fraction are supported by the growing of the Brownian motion parameter.
Hiperplasia endometrial e câncer do endométrio

A hiperplasia endometrial (HE), CID-10 N85.0, é uma entidade nosológica que representa todo um espectro de alterações endometriais morfológicas. Estima-se que a incidência de HE seja de aproximadamente três vezes a de câncer endometrial (CE), CID-10 C54. Ela é caracterizada por aumento da relação glândula-estroma endometrial quando comparada ao endométrio proliferativo normal. A relevância do conhecimento dessa doença reside na associação do risco de progressão para o CE, além de a forma hiperplasia atípica ser considerada uma lesão precursora do CE do tipo endometrioide. Além disso, a HE e o CE compartilham fatores de risco similares. (1) A HE subdivide-se em 1) hiperplasia benigna e 2) hiperplasia atípica ou neoplasia intraepitelial endometrial (HA/NIE) (Figura 1). (2) Com relação ao câncer de corpo uterino, no Brasil, foram estimados, para o ano de 2016, 6.950 casos novos, com risco estimado de 6,74 casos a cada cem mil mulheres. (3) No mundo, o câncer de corpo uterino é a segunda neoplasia ginecológica mais incidente, com incidência de 319.605 casos e 76.160 mortes estimadas em 2012. (4) A classificação histológica do CE, segundo a Organização Mundial da Saúde (OMS), subdivide os tumores nos seguintes tipos histológicos: 1) carcinoma endometrioide; 2) carcinoma mucinoso; 3) carcinoma seroso; 4) carcinoma de células claras; 5) tumores neuroendócrinos (subdivididos em tumores neuroendócrinos de baixo grau e de alto grau); 6) adenocarcinoma misto; 7) carcinoma indiferenciado; 8) carcinoma desdiferenciado (Figura 2). (2) O tratamento para a HE e o CE costuma ser curativo na maior parte das vezes.
Reactivity comparison of five- and six-membered cyclic carbonates with amines : Basic evaluation for synthesis of poly(hydroxyurethane)

The reaction of six- and five-membered cyclic carbonates, 5-(2-propenyl)-1,3-dioxan-2-one (1) and 4-(3-butenyl)-1,3-dioxolan-2-one (2) with hexylamine and benzylamine was carried out in N,N-dimethylacetamide at 30, 50, and 70 °C. The six-membered cyclic carbonate 1 proceeded quantitatively with hexylamine at 30 °C for 24 h, while the five-membered cyclic carbonate 2 converted in 34%. The reaction rate constants at 50 °C are evaluated as follows; 1.42 L/mol · h (1 with hexylamine) > 0.29 L/mol · h (1 with benzylamine) > 0.04 L/mol · h (2 with hexylamine) > 0.01 L/mol · h (2 with benzylamine). The activation energies in the reactions of 1 and 2 with hexylamine were estimated to be 10.1 and 24.6 kJ/mol, respectively. The ring-strain energy was calculated by the semi-empirical method using the PM3 Hamiltonian. The ring-strain energy of the six-membered cyclic carbonate was 2.86 kcal/mol larger than that of five-membered one. © 2000 John Wiley & Sons, Inc. J Polym Sci A: Polym Chem 39: 162–168, 2001
In situ self-catalyzed formation of core–shell LiFePO4@CNT nanowires for high rate performance lithium-ion batteries

In situ self-catalyzed core–shell LiFePO4@CNT nanowires can be fabricated by a two-step synthesis, where one-dimensional LiFePO4 nanowires with a diameter of 20–30 nm were encapsulated into CNTs, and 3D conducting networks of CNTs were obtained from in situ carbonization of a polymer. LiFePO4@CNT nanowires deliver a capacity of 160 mA h g−1 at 17 mA g−1, and 65 mA h g−1 at 8500 mA g−1 (50 C, 1.2 minutes for charging and 1.2 minutes for discharging).
Embedded Design of Compact Broadband Omnidirectional Antenna With Quad-Polarization Diversity

A compact and broadband omnidirectional antenna is proposed for quad-polarization diversity. Novel reconfigurable structures of omnidirectional vertical polarization (VP) and horizontal polarization (HP) elements based on embedded design are put forward to achieve low-profile. A simplified equivalent <italic>LC</italic> cascaded circuit is modeled to better understand the broadband VP element and guide its design. In order to realize quad-polarization diversity, an advanced switchable feed network, which contains ten p-i-n diodes with four output states are carefully designed. Measured results show that the overlapped bandwidth for all operation modes is 20.5% (2.28–2.8 GHz) within a compact size of 0.69 <italic>λ</italic><sub>0</sub> × 0.69 <italic>λ</italic><sub>0</sub> × 0.064 <italic>λ</italic><sub>0</sub>, where <italic>λ</italic><sub>0</sub> is the free-space wavelength at the center frequency 2.5 GHz.
Heavy Metal Uptake by Rape

Abstract In pot experiments, the effect of single and combined pollution of soil by lead (Pb), cadmium (Cd), and zinc (Zn) and uptake of heavy metals in Brassica napus L. were investigated. There were two main factors that affected the assimilation of Pb, Cd, and Zn by rape: (i) level of soil pollution by the particular element and (ii) the combined influence of Pb, Cd, and Zn. In general, with the increase of the concentrations of Pb, Cd, and Zn in the soil, there were increases in the concentrations of those elements in the roots, stems, and seeds. The main part of the Pb and Zn amounts taken up by the roots from the soil are fixed and accumulated in the roots, and small amounts of them move through the conductive system to the seeds. Cadmium moves relatively easily from root to stem and is accumulated in higher concentrations in the top of the plant. There is a well‐expressed synergistic interaction between Pb2+ and Cd2+, as well as of Cd2+ and Zn2+. Zinc has a highly depressing effect on the assimilation of Cd2+, as does Pb2+ on the assimilation of Zn2+. The combined pollution by Pb, Cd, and Zn stimulated the assimilation of these elements by the roots and foliage and eliminated the effect of Zn2+ on Cd2+ and of Pb2+ on Zn2+.
Economic valuation of improved irrigation water use: the case of Meskan District, Southern Ethiopia

Abstract The economic value of water is essential for the rational allocation of the scarce water resource as its availability has become a problem in many countries of the world. This study specifically aimed to assess the households’ willingness to pay decision and to estimate farmers’ willingness to pay for improved irrigation water use. The primary was data collected from 210 households selected through a multistage sampling technique followed by a probability proportional to sample size while it was also supplemented by secondary data. Double-bounded dichotomous choices with follow-up open-ended questions of contingent valuation methods were employed. The result of the study showed that all of the households were willing to pay for improved irrigation water use. The mean willingness to pay for the use of improved irrigation water from the double-bounded dichotomous question of Seemingly Unrelated Bivariate Probit model was Birr 829.46 per year per timad (0.25 ha). On the other hand, the mean willingness to pay from open-ended questions was Birr 726.55 per year per timad (0.25 ha). The respective total aggregate value of improved irrigation water use in the study varies from 33,421,300 birr in open ended to 38,155,160 birr from double bound. Thus, appropriate irrigation water pricing will make the user more aware of the resource scarcity. Therefore, the study suggests a good indicator for the concerned body to invest in expanding the current irrigation projects and introducing proper irrigation water pricing, creating more value for improved irrigation, leading to efficient management of the improved system.
DIGITAL ECONOMY AS A CHALLENGE TO THE FORMATION OF INTELLIGENT INFRASTRUCTURE OF TECHNOLOGICAL DEVELOPMENT AT INDUSTRIAL ENTERPRISES

The problem of the impossibility to ensure the technological development of industrial enterprises in the new economic conditions of digitalization based on traditional approaches developed for the conditions, in which modern high-tech enterprises no longer operate, determined the core scientific idea of the study. It forms a conceptual model for the intelligent infrastructure of technological development at industrial enterprises based on the principles of infrastructure-reproduction approach. Domestic and foreign management theory presented with a variety of concepts, including those focused on modern aspects of management, due to structural changes in the economy based on digital technologies, do not give a sufficiently clear idea of the management features of the intelligent infrastructure formation for technological development at industrial enterprises in the new economic conditions. This is an urgent scientific problem to be solved. The proposed concept is based on methods of system analysis and scientific modelling, economic-statistical methods (grouping, typing, constructing time series, determining ratings, etc.), to analyze and compile statistical information, identify trends and characteristics of technological development at industrial enterprises, analytical method when performing analytical calculations, graphical method for the visualization of the results. From the infrastructure-reproduction approach the article reveals the components of the conceptual model for intelligent infrastructure of technological development at industrial enterprises, and presents the essential links between them, due to the task of achieving the target results in the field of technological development in the digital economy. The presented model can influence the management orientation of a modern industrial enterprise and the choice of an acceptable organizational solution in the field of staff intellectual resources management for its technological development. These results will allow developing research, designing and implementing organizational and management systems and mechanisms to ensure the technologization based on effective intellectual and resource support in the industrial sector in the digital economy.
The Involvement of B40 entrepreneurs in E-Commerce: experience from Malaysia

The focus of the study was: first; to identify the involvement of B40 entrepreneurs in e-commerce and, second; to analyse the factors influencing their involvement. This quantitative study involved 207 respondents chosen using the snowball sampling technique. All respondents were low-income government sector workers (B40) who were conducting business part-time to increase their income. Information was acquired via questionnaires which had been adapted according to the study’s suitability and adopted from several sources. The finding showed that the respondents were well-informed about the existence of e-commerce. A majority of them only utilised e-commerce for shopping purposes and not for selling purposes even though they had products to be marketed. As for the respondents who sold products online, the most critical factors influencing their involvement were the income increase, broadband facility and knowledge about e-commerce. Regarding the respondents who did not market their products online, the critical factors which influenced them were the satisfaction of doing business in a traditional way, online business safety and lack of knowledge in handling online business were critical factors which hindered their involvement in e-commerce. As such, the B40 entrepreneurs were encouraged to make use of e-commerce to expand the market. They should also attend related courses, become mentee for successful e-commerce mentors, and strive to expand their business network. The huge investment made by the government to provide broadband facility for the community members should be fully utilised especially by the B40 entrepreneurs in their effort to increase their income level.
Direct Deposition of a Rutile Layer on Polymer Substrates to Induce Bioactivity In Vitro

Rutile films were deposited on polytetrafluoroethylene (PTFE) substrates using 1.5 M titanium tetrachloride aqueous solution at 60 °C. The rutile films exhibited excellent in vitro bioactivity as they induced apatite deposition in a simulated body fluid (SBF) within 2 days. Chlorine incorporated in the rutile films did not inhibit apatite deposition.
Electrophoretic stretching of DNA molecules using microscale T junctions

Controlled trapping and stretching of DNA molecules are critical for single molecule genomic and polymer physics studies. The authors present a microfabricated T junction which can trap and stretch single free DNA molecules using electrophoretic forces. The device does not require special end functionalization of the DNA. They show that two physical mechanisms of stretching can occur depending on the length of the DNA relative to the channel width in the junction region. Stable trapping and stretching of DNA molecules up to lengths of 485kbp are demonstrated.
Evidence for Subcortical Plasticity after Paired Stimulation from a Wearable Device

Existing non-invasive stimulation protocols can generate plasticity in the motor cortex and its corticospinal projections; techniques for inducing plasticity in subcortical circuits and alternative descending pathways such as the reticulospinal tract (RST) are less well developed. One possible approach developed by this laboratory pairs electrical muscle stimulation with auditory clicks, using a wearable device to deliver stimuli during normal daily activities. In this study, we applied a variety of electrophysiological assessments to male and female healthy human volunteers during a morning and evening laboratory visit. In the intervening time (∼6 h), subjects wore the stimulation device, receiving three different protocols, in which clicks and stimulation of the biceps muscle were paired at either low or high rate, or delivered at random. Paired stimulation: (1) increased the extent of reaction time shortening by a loud sound (the StartReact effect); (2) decreased the suppression of responses to transcranial magnetic brain stimulation (TMS) following a loud sound; (3) enhanced muscle responses elicited by a TMS coil oriented to induce anterior-posterior (AP) current, but not posterior-anterior (PA) current, in the brain. These measurements have all been suggested to be sensitive to subcortical, possibly reticulospinal, activity. Changes were similar for either of the two paired stimulus rates tested, but absent after unpaired (control) stimulation. Taken together, these results suggest that pairing clicks and muscle stimulation for long periods does indeed induce plasticity in subcortical systems such as the RST. SIGNIFICANCE STATEMENT Subcortical systems such as the reticulospinal tract (RST) are important motor pathways, which can make a significant contribution to functional recovery after cortical damage such as stroke. Here, we measure changes produced after a novel non-invasive stimulation protocol, which uses a wearable device to stimulate for extended periods. We observed changes in electrophysiological measurements consistent with the induction of subcortical plasticity. This protocol may prove an important tool for enhancing motor rehabilitation, in situations where insufficient cortical tissue survives to be a plausible substrate for recovery of function.
Forecasting trends in hospitalisations due to drug poisoning in Semnan, Iran up to 2021: time series modelling

Introduction: Investigating and forecasting the changes in the frequency of referrals to the treatment centres of the patients with drug poisoning can aid the assessment of the burden of health problems and planning of appropriate intervention programmes. The aim of this study is to predict the trend of drug poisoning case referrals to the Iranian hospitals up to 2021. Material and methods: The Box & Jenkins model was applied in a longitudinal study to forecast the frequency of drug and alcohol poisoning surveys, which showed that drug abuse prevalence in Iran is higher than the global mean, were also confirmed by our research. The limitation of our study is the lack of access to the full information on psychoactive substance consumption as well as classified information like police and national registry system da-tabases. Conclusions: Our study revealed a rising trend for drug poisoning patients referred to the studied hospitals. The forecasting also suggested that the trend will continue up to 2021 without suitable intervention.
Technical Analysis on Household-Scale Rooftop Solar Power Plant Design with On-Grid System in Semarang City

Indonesia has 442 GW total of potential renewable energy equivalence which can be used for electricity generation. However, the energy utilization in 2018 is only 8.8 GW or 0.019% of total potential renewable energy, while the biggest renewable energy potential is at 207.8 GWp. By also considering the growing number of household customers, utilizing the rooftop as the base of solar power plant generators can be an effective and efficient solution. The purposes of this research are to technically design and analyze the household-scale rooftop solar power plant potential with an on-grid system. Through the utilization of PVSyst 6.43 software and a variety of main components, this household-scale rooftop solar power plant potential performance planning is expected to generate 4.23 kWh / kWp per day.
Singibot - A Student Services Chatbot

: Singibot is a restful web application with the intent of providing information to the students of Singidunum University. The web application takes advantage of the Spring framework for Java and the communication logic between the human and the bot is built upon the well-known AliceBot that is based on the AIML technology. The long-term goal is to build a self-learning bot that can adapt to evolving students’ requests. In this iteration, we are presenting a pilot version and the implemented functions for this version are the means to respond to questions regarding the information related to the education at this institution and to carry on an informal conversation. The goal for this version is to provide a service for students that will improve their studying experience and the quality of their studies.
Dental Implant Surface: Driving Force for Successful Osseointegration

Background: Surface characteristics have shown to influence the osseointegration property of dental implants. Surface alterations are done with an aim of providing rougher surface to induce better cell adhesion and intimate implant-to-bone contact. Aim: To analyze the surface characteristics of Indident Dental Implant system and to compare its surface properties with three commercial dental implant systems. Objective: To study the surface topography and chemical composition of four commercially available dental implant systems. Materials and Methods: Surface characterization of four implant systems was studied using optical profilometry, scanning electron microscopy, energy dispersive X-ray spectroscopy and X-ray photoelectron spectroscopy. The analysis was done in two regions; valley and top. Values and peaks obtained were studied to derive comparison and propose reasons for success. Result: Optical profilometry showed variation in implant surface roughness at amongst different location in the same implant system as well as within different implant systems. Roughest surface was observed for Indident and AB implant systems, the findings of which were consistent with those of SEM images for the respective systems. SEM analysis of Indident Implant showed amorphous pattern over the complete implant surface, whereas in case of AB and Bio Horizon, top region showed different morphology compared to the valley. Nobel Biocare sample showed difference in morphology compared to rest of the implant systems. EDX and XPS findings also correlated with those found via SEM analysis.