Miracle-dz/UniFAR-FTUs huggingface dataset:
A Semi-Empirical Fluid Dynamic Model of a Vacuum Microgripper Based on CFD Analysis

Vacuum microgrippers are devices used to handle and manipulate small objects. Despite their simple working principle and low cost, they show low efficiency in detaching performance, especially when the object to be grasped is very small. In this work, a particular design for vacuum microgrippers with an incorporated automatic release tool is considered. The final goal of this study was to present a numerical model that can supply reliable estimates of the aerodynamic force acting on the release tool and of the air flow rate inside the gripper as a function of geometric parameters and the outlet pressure value. A complete CFD analysis of a simplified model of the device is presented. Grid independence analysis was also performed to define a suitable grid and guarantee a good trade-off between accuracy and computing time. According to Design of Experiments (DOE) techniques, 81 simulations were performed, changing the values of the outlet pressure (p2), the body inner diameter (D), the lateral holes’ diameter (d) and the releasing mass length (L). Every design variable could assume three different values. Linear regression, based on the least square method, was employed to determine mass flow rate and lifting force empirical correlations.
Impact of Prior to Intensive Care Unit Statin use on Patients with Acute Kidney Injury

Purpose: To evaluate if prior to intensive care unit (ICU) statin use improve the clinical outcomes, for critically ill patients with acute kidney injury (AKI). Materials and Methods: Patients with AKI were selected from the Medical Information Mart for Intensive Care IV v1.0 database for this retrospective observational study. The primary outcome was 30-day ICU mortality. 30-day in-hospital mortality and ICU length of stay (LOS) were considered as secondary outcomes. Comparison of mortality between pre-ICU statin users with non-users was conducted by multivariable cox proportional hazards model. Comparison of ICU LOS between two groups was implemented by multivariable linear model. Three propensity score methods were used to verify the results as sensitivity analyses. Stratification analyses were conducted to explore whether the association between pre-ICU statin use and mortality differed across various subgroups classified by sex and different AKI stages.Results: 3821 pre-ICU statin users and 9690 non-users were identified. In multivariable model, pre-ICU statin use was associated with reduced 30-day ICU mortality rate [Hazara ratio (HR) 0.68 (0.59,0.79); P<0.001], 30-day in-hospital mortality rate [HR 0.64 (0.57, 0.72); P<0.001] and ICU LOS [Mean Difference -0.51(-0.79, -0.24); P<0.001]. The conclusions were consistent in three propensity score methods. In Subgroup analyses, pre-ICU statin use was associated with decreased 30-day ICU mortality and 30-day in-hospital mortality in both sexes and AKI stages, only except for 30-day ICU mortality in AKI stage 1.Conclusions: Patients with AKI who were administered statins prior to ICU admission might have lower mortality rate during ICU or hospital stay and shorter ICU LOS.
ENVIRONMENTAL INDICATORS LEADING TO CARDIAC MALFUNCTION AMONG TEXTILE WORKERS

Background: In the Registrar General’s Decennial Supplement for 1951, bronchitis and myocardial degeneration were both responsible for excessive mortality among cotton spinners and chronic rheumatic disease was an important, although relatively rare, cause of death for cotton weavers. Aim of the work: The present study designed to investigate the environmental indicators and risk factors in textile workers that increase risk of cardiac malfunction and personal conventional risk factors in textile workers that increase risk of cardiac malfunction. In addition, the most susceptible persons to cardiac malfunction among the exposed workers in textile job to avoid exposure as preventive measures. Subjects and methods: A cross sectional study that included workers in textile companies mainly the most exposed persons to environmental and conventional risk factors. Subjects were divided into two groups: Group A: included subjects exposed to risk factors insides textile departments [included 120 subjects who fulfilled inclusion criteria]; Group B: included non-exposed subjects in the other departments, as a control group [included 120 subjects]. Inclusion criteria included the following: male subject, age more than 30 years, work period inside factor is more than 5 years and control group not exposed to textile risk factors before. All cases were underwent full history taking, clinical evaluation, laboratory evaluation and ECG examination. Results: There was significant increase of known environmental risk factors(chemical and physical), past history of medical risk factors, smoking, blood pressure, heart rate, lipid profile and ECG abnormalities in study group, when compared to control group. On the other hand, there was insignificant difference between cases and controls as regard age, marital state, BMI, random blood sugar, alcohol drinking or duration of work. Conclusion: There is an association between environmental risk factors and development of cardio-vascular disease; and it can be explained by that: environmental risk especially noise and temperature variations leads to increased traditional risk factors of CVD and subsequently development of the disease.
Recyclable and Malleable Epoxy Thermoset Bearing Aromatic Imine Bonds

A method for preparing reprocessable epoxy thermoset is presented. The process is composed of synthesis of a bisphenol monomer bridged by an imine bond, glycidylation of the bisphenol, and cross-linking with a hardener to form thermoset. The resulting epoxy thermoset possesses comparable properties to conventional high-performance thermosets made from bisphenol A. However, when treated by a stimulus like acid, temperature, and/or water, the described thermoset exhibits reprocessability. Degradation and recycling involve hydrolysis and re-formation of imine bonds; reshaping and repairing of the thermoset are realized through imine exchange reactions. All the described processes require no metal catalyst, press heating, or additional monomer, which significantly widens thermoset reprocessing.
How an inquiry-oriented textbook shaped a calculus instructor’s planning

We investigate how an inquiry-oriented, dynamic, open-source calculus textbook shaped one college instructor’s planning. We rely on Dietiker et al.’s [(2018). Research commentary: Curricular noticing: A framework to describe teachers’ interactions with curriculum materials. Journal for Research in Mathematics Education, 49(5), 521–532. https://doi.org/10.5951/jresematheduc.49. 5.0521] curriculum noticing framework to situate the instructor’s actions during lesson planning using data from surveys, logs and interviews. The instructor’s planning practices are characterized by intense use of the textbook, including creating additional curricular material related to its content. Our observations suggest that the textbook supported and influenced the instructor in implementing his inquiry-oriented visions and goals while planning his lessons. We conclude by suggesting further investigation of how textbooks shape undergraduate mathematics education and the textbooks’ role in shaping undergraduate mathematics planning practices.
Palynostratigraphy, Palynofacies, T-R Cycles and Paleoenvironments in the Middle Jurassic–Early Cretaceous Ramså Basin, Andøya, Northern Norway

Palynostratigraphy and palynofacies analyses are applied to identify transgressive-regressive sequences and changes in paleoenvironment through the Middle Jurassic–Early Cretaceous succession of the Ramså Basin on Andøya. The conglomerate, the succeeding lacustrine-swamp deposits of the Hestberget and Kullgrøfta members (Ramså Formation) and the overlying terrestrial to marginal marine deposits of the lower Bonteigen Member (Ramså Formation), comprise the Bajocian T-R sequence. Bathonian–Oxfordian strata appear to be missing in the studied boreholes, and the second T-R cycle spans the Kimmeridgian to Berriasian open marine deposits of the upper Bonteigen Member and the Dragneset Formation (Breisanden, Taumhølet and Ratjønna members). The overlying Nybrua Formation comprises a condensed marine succession of Valanginian–Early Barremian calcareous sandstone and marl, followed by brownish-red siltstone. The upper T-R sequence (Skarstein Formation) consists of marine transgressive Barremian dark siltstones, silty shales and mudstones, followed by dark mudstone and shale. Marine palynomorphs recovered in these stacked marine slope turbidite sediments are of Late Barremian age, but possibly the youngest T-R cycle also includes Aptian deposits elsewhere in the basin.
Aboriginal uses for introduced glass, ceramic and flint from the former Schofields Aerodrome, Western Sydney (Darug Country), New South Wales

Abstract Since permanent colonial incursion in 1788, Aboriginal groups around Australia incorporated introduced materials for a variety of tasks. However, relatively little is known about Aboriginal uses of bottle glass and ceramic flakes because there have only been two published use-wear analyses concerning bottle glass and none for ceramic. Excavations at the historical site of the former Schofields Aerodrome in New South Wales yielded flakes of both materials as well as introduced flint. We draw on actualistic experiments to inform interpretations of use-wear among the 279 archaeological specimens. Results demonstrate that glass, ceramic and flint were indeed used at the former Schofields Aerodrome site, for tools to work other materials. This is the first evidence for such use of ceramic flakes, which had previously only been known to have been used as end-products, such as spear tips. Use-wear also indicates that, contrary to common assumptions, thicker parts of glass bottles were not always preferred for tools and that across each raw material, tools were predominantly shards rather than intentionally knapped flakes. We infer that while ascribing motives to past behaviours is complex, the use of the introduced materials represents agency in Aboriginal people’s engagement with the incoming colonial culture.
Applying Differential Forms and the Generalized Sundman Transformations in Linearizing the Equation of Motion of a Free Particle in a Space of Constant Curvature

Equation of motion of a free particle in a space of constant curvature applies to many fields, such as the fixed reduction of the second member of the Burgers classes, the study of fusion of pellets, equations of Yang-Baxter, the concept of univalent functions as well as spheres of gaseous stability to mention but a few. In this study, the authors want to examine the linearization of the said equation using both point and non-point transformation methods. As captured in the title, the methods under examination here are the differential forms (DF) and the generalized Sundman transformations (GST), which are point and non-point transformation methods respectively. The comparative analysis of the solutions obtained via the two linearizability methods is also taken into account.
Determining for the Interaction of Constitutive Androstane Receptor and CITCO Using a Surface Plasmon Resonance Based Biosensor System

Abstract: This study investigated the binding affinity of constitutive androstane receptor (CAR) with its activator, 6-(4-chlorophenyl)imidazo[2,1-b][1,3]thiazole-5-carbaldehyde O-(3,4-dichlorobenzyl) oxime (CITCO) in order to develop a rapid method for screening of protein-binding compounds. At first, the performance capacity of surface plasmon resonance (SPR) system was confirmed by the interaction of commercial carbonic anhydrate II (CAII) protein and 4-carboxybenzenesulfonamide (CBS) compound. The target protein, ligand binding domain of human CAR (hCAR), was optimally immobilized on SPR sensor chip using amine coupling method and then used to detect the interaction with chemical molecules. CITCO, known as a hCAR agonist in previous studies was used as the positive control to develop the method for determination of the binding affinities between SPR-immobilized CAR proteins and chemicals. As expected, CITCO showed specific bindings to hCAR protein in this study, indicating the application potential of SPR system in screening probable ligands of proteins.Keywords: Constitutive androstane receptor, CITCO, surface plasmon resonance.
A systematic review of music-induced substance craving

Background: Conditioning- and cue-induced craving theories indicate that music has the potential to induce substance craving. A better understanding of this phenomenon could enhance treatment and prevent misuse, relapse, and overdose. Objective: The purpose of this systematic review was to locate and examine studies using music to induce substance craving in humans. We sought to discover if music can induce substance craving as well as specific aspects of the music and how it was used. Method: Adhering to the PRISMA Statement and Checklist, we conducted a systematic review of literature on music-induced substance craving in nine databases. We extracted data from studies meeting our inclusion criteria, which related to substance craving induced by music and data based on music intervention reporting guidelines. Results: We reviewed 751 research outputs. A total of 33 articles meeting the inclusion criteria were found, indicating that various types of music can induce alcohol, cannabis, nicotine, and general substance craving. In most of the studies, music was used as a component of a mood induction technique or in a virtual reality setting that led to craving. There tended to be a lack of detail about the music itself and most authors did not adhere to music intervention reporting guidelines. In the majority of studies, the researchers selected the music to induce negative mood states so as to elicit craving. Conclusion: Music has the potential to induce substance craving. While the music used in studies varied considerably and tended to be well controlled from a research design perspective, the music was not based on the music psychology literature, and authors did not adequately report essential aspects of the music. Implications for clinical practice, limitations, and suggestions for future research are provided.
Root biomechanical properties of Chrysopogon zizanioides and Chrysopogon nemoralis for soil reinforcement and slope stabilisation

Plant root reinforcement in soil bioengineering has gained increasing interest as a means of sustainable and environmentally friendly soil reinforcement and stabilisation. While Chrysopogon zizanioides is widely distributed in tropical regions worldwide and has been advocated for use in slope stabilisation and soil erosion control, C. nemoralis is normally distributed in mountainous areas in Southeast Asian countries, and its potential to reinforce soil has rarely been explored in the soil bioengineering literature. With the importance of root properties in soil bioengineering, this study was carried out to provide a comprehensive dataset of root biomechanical properties, morphological traits, and root reinforcement of these two contrasting vetiver species. A series of experiments, including root observation with a rhizobox system, uniaxial tensile test, and direct shear test, was performed. Results showed that Young's modulus and diameter of C. nemoralis roots were almost 1.4‐ and 1.3‐times greater than those of C. zizanioides roots (p < 0.05). By contrast, no significant difference between the two vetiver species was observed in terms of tensile strength, 'side' root area ratio (RARS), and root orientation (p > 0.05). The diameter–strength (R2 = 0.55–0.56, p < 0.05) and diameter–modulus relationships (R2 = 0.51–0.6, p < 0.05) of both species were consistent with negative power‐law models. Conversely, their diameter–orientation relationship followed a linear model (R2 = 0.85–0.89; p > 0.05). The soil shear strength in terms of cohesion greatly increased in the presence of the roots of C. nemoralis (Δc = 4.9 kPa) and C. zizanioides (Δc = 4.4 kPa). Therefore, C. nemoralis could be an alternative to C. zizanioides in soil bioengineering applications.
Synthesis and characterization of a single phase zeolite A using coal fly ash

Zeolitization of coal fly ash (CFA) provides a potential alternative for creating high-added-value products from this hazardous solid waste. In this work, a single phase zeolite A with high crystallinity was successfully synthesized from CFA via the alkali fusion hydrothermal method. X-ray diffraction (XRD), scanning electron microscopy (SEM), X-ray fluorescence (XRF), Fourier transform infrared (FT-IR) spectroscopy, N2 physisorption, and solid-state MAS NMR spectra were applied to characterize as-synthesized zeolites. Results indicated that the type and purity of zeolite were closely related to the synthesis conditions and parameters. A well-defined cubic shape of zeolite A with a specific surface area of 43.7 m2 g−1 was obtained at a low temperature of 75 °C during hydrothermal treatment for 18 h. The ammonium cation exchange capacity (CEC) test showed an impressive value of 232.2 mmol 100 g−1 over prepared zeolite A, which was about 22 times that of the original CFA and close to commercial zeolite A. These results pave the way for the exploitation and utilization of the CFA.
The Challenges of Teaching Indonesian History in The Teaching Factory Learning Model in Vocational High School

This study aims to identify teachers' challenges in teaching Indonesian History at SMK using the Teaching Factory learning model. This study uses qualitative methods by taking research at SMKN 28 South Jakarta. The analysis used is the grounded theory approach of Strauss and Corbin. The results illustrate three interrelated things: the Teaching Factory concept, the implementation and challenges faced by Indonesian History subject teachers, and the teacher's efforts to face these challenges. Based on the research results, it shows that the challenge faced by the teacher is the compaction of Indonesian History material in SMK. The teacher must accommodate students who cannot participate in learning activities in class and the absence of teaching materials based on the Teaching Factory. Efforts to answer these challenges based on the research results in the field can be overcome by; adjusting Indonesian History material in vocational schools, providing teaching materials that are easy to understand for students to learn independently, and making learning innovations in the skills process (KI-4).
Dream ore reality? The presence of Social Practice Development in social work practice

ABSTRACT This study explored the extent to which social workers conduct Social Practice Development (SPD), an approach translated from nursing, to foster practice improvement in social work. Alumni of bachelor’s programmes in social work were asked to complete an online survey about SPD. Based on exploratory factor analyses and item analyses, mean scores and standard deviations of SPD activities conducted by social workers were calculated. The results show that social workers perceive SPD to be part of their daily practice and conduct about 60% of the measured SPD activities on a regular basis. Work has to be done, especially with regard to research skills, theory use, and alignment to the broader organisational context. By focusing on these SPD activities, MSW programmes can play an important role in enhancing SPD and, in turn, fostering practice improvement in social work.
Techniques to determine spontaneous ignition of brown coal

Open-pit mining of mineral deposits is characterised by a significant level of adverse effects on the atmospheric air due to both natural and technogenic phenomena. When assessing the environmental impact, some authors often do not take into account the phenomenon of endogenous spontaneous coal combustion, which can lead to the release of various toxic substances into the atmosphere. In cases of an imperfect control system, and untimely adoption of fire prevention measures, spontaneous combustion can cause catastrophic consequences. This issue is particularly acute in decommissioned facilities, where uncontrolled temperature growth occurs in a fire seat, the area of which increases daily in the absence of monitoring of combustion in strata and dumps. Such circumstances are observed at the Korkino Coal Mine, where seats of endogenous brown coal combustion have been observed for over 25 years. Since the mine is decommissioned, its reclamation is necessary with the development of complex works on the isolation of endogenous burning seats. Carrying out these works at the modern level requires the creation of a mathematical model of the process, providing a comprehensive study of the main parameters of spontaneous combustion, and also estimates of release intensity of the main fire gases at different temperatures. This paper presents the results of an analysis of the experience of conducting experimental studies of the processes of spontaneous combustion of brown coal, which served as the basis for building an experimental facility for studying the processes of spontaneous combustion and endogenous combustion of brown coals of the Korkino Coal Mine.
Microcystis aeruginosa Synergistically Facilitate the Photocatalytic Degradation of Tetracycline Hydrochloride and Cr(VI) on PAN/TiO2/Ag Nanofiber Mats

Cyanobacterial blooms can cause serious damage to aquatic ecosystems. However, we have demonstrated that typical algae-blooming species Microcystis aeruginosa (M. aeruginosa) combined with photocatalysts could synergistically facilitate the photodecontamination of tetracycline hydrochloride (TC) and Cr(VI). In this study, for the first time, harmful algae were successfully converted into photoreactive bionano hybrid materials by immobilizing M. aeruginosa cells onto polyacrylonitrile (PAN)-TiO2/Ag hybrid nanofibers, and their photocatalytic activity was evaluated. The addition of M. aeruginosa significantly improved the photodecontamination, and the reaction rate constant (k) values of TC and Cr(VI) degradation by M. aeruginosa-PAN/TiO2/Ag nanofiber mats were 2.4 and 1.5-fold higher than that of bare PAN/TiO2/Ag nanofiber. Photoreaction caused damage to algae cells, but no microcystin was found that had been photodegraded simultaneously. The effects of various active species were also investigated, and the photodegradation mechanism was proposed. Recycling tests revealed that this flexible M. aeruginosa-PAN/TiO2/Ag hybrid mat had potential application in the removal of mixed organic and inorganic pollutants with high efficiency and without secondary pollutants. Thus, harmful algae blooms could serve as an efficient materials to remove toxic pollutants in a sustainable way under visible light irradiation.