Miracle-dz/UniFAR-FTUs huggingface dataset:
Characterization of Failure Strain In Fiber Reinforced Composites: Under On-Axis and Off-Axis Loading

Metals are known for high ductility and have, been used to design and fabricate structural components for many years. However, composite materials are taking over traditional materials owing to their significant mechanical properties. Fiber-reinforced composites exhibit lower ductility and failure strain, resulting in brittle failure, limiting their application where high ductility is desired. In this study, an effort has been made to design, fabricate, and test continuous fiber-reinforced composites with improved ductility. A comparative analysis was performed for optimizing the failure strain of different woven fiber-reinforced composite materials under both on-axis (0°/90°) and off-axis (±45°) loading. The materials include carbon/epoxy, E-glass/epoxy, and jute/epoxy composite. The tests were performed according to ASTM D3039 standard. The strength of all tested composites in on-axis and off-axis loading was obtained from tensile test results. But failure strain was limited in on-axis loading. Interestingly, glass/epoxy composite showed improved failure strain, by 90%, without much loss in tensile strength in off-axis loading than on-axis loading. The jute fiber revealed limited tensile strength and failure strain in both loading conditions.
Investigating fouling and cleaning during the filtration of Gum Arabic to save water and reduce energy

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Homogenization of a quasilinear elliptic problem in domains with small holes

This work aims to provide the asymptotic behavior of some class of quasilinear problems posed in a domain with small holes in for N>2, as . A nonlinear Robin boundary condition is prescribed on some of the holes, while a Dirichlet boundary one is imposed on the other holes as well as on the outer boundary. We apply the Periodic Unfolding Method for the homogenization of this problem.
Co-variability of S6+, S4+, and S2− in apatite as a function of oxidation state: Implications for a new oxybarometer

Abstract In this study, we use micro-X-ray absorption near-edge structures (μ-XANES) spectroscopy at the S K-edge to investigate the oxidation state of S in natural magmatic-hydrothermal apatite (Durango, Mexico, and Mina Carmen, Chile) and experimental apatites crystallized from volatile-saturated lamproitic melts at 1000 °C and 300 MPa over a broad range of oxygen fugacities [(log(fO2) = FMQ, FMQ+1.2, FMQ+3; FMQ = fayalite-magnetite-quartz solid buffer]. The data are used to test the hypothesis that S oxidation states other than S6+ may substitute into the apatite structure. Peak energies corresponding to sulfate S6+ (~2482 eV), sulfite S4+ (~2478 eV), and sulfide S2− (~2470 eV) were observed in apatite, and the integrated areas of the different sulfur peaks correspond to changes in fO2 and bulk S content. Here, multiple tests confirmed that the S oxidation state in apatite remains constant when exposed to the synchrotron beam, at least for up to 1 h exposure (i.e., no irradiation damages). To our knowledge, this observation makes apatite the first mineral to incorporate reduced (S2−), intermediate (S4+), and oxidized (S6+) S in variable proportions as a function of the prevailing fO2 of the system. Apatites crystallized under oxidizing conditions (FMQ+1.2 and FMQ+3), where the S6+/STotal peak area ratio in the coexisting glass (i.e., quenched melt) is ~1, are dominated by S6+ with a small contribution of S4+, whereas apatites crystallizing at reduced conditions (FMQ) contain predominantly S2−, lesser amounts of S6+, and possibly traces of S4+. A sulfur oxidation state vs. S concentration analytical line transect across hydrothermally altered apatite from the Mina Carmen iron oxide-apatite (IOA) deposit (Chile) demonstrates that apatite can become enriched in S4+ relative to S6+, indicating metasomatic overprinting via a SO2-bearing fluid or vapor phase. This XANES study demonstrates that as the fO2 increases from FQM to FMQ+1.2 to FMQ+3 the oxidation state of S in igneous apatite changes from S2− dominant to S6+ > S4+ to S6+ ≫ S4+. Furthermore, these results suggest that spectroscopic studies of igneous apatite have potential to trace the oxidation state of S in magmas. The presence of three S oxidations states in apatite may in part explain the non-Henrian partitioning of S between apatite and melt. Our study reveals the potential to use the S signature of apatite to elucidate both oxygen and sulfur fugacity in magmatic and hydrothermal systems.
Rotated majority gate-based 2n-bit full adder design in quantum-dot cellular automata nanotechnology

Purpose In nano-scale-based very large scale integration technology, quantum-dot cellular automata (QCA) is considered as a strong and capable technology to replace the well-known complementary metal oxide semiconductor technology. In QCA technique, rotated majority gate (RMG) design is not explored greatly, and therefore, its advantages compared to original majority gate are unnoticed. This paper aims to provide a thorough observation at RMG gate with its capability to build robust circuits. Design/methodology/approach This paper presents a new methodology for structuring reliable 2n-bit full adder (FA) circuit design in QCA utilizing RMG. Mathematical proof is provided for RMG gate structure. A new 1-bit FA circuit design is projected here, which is constructed with RMG gate and clock-zone-based crossover approach in its configuration. Findings A new structure of a FA is projected in this paper. The proposed design uses only 50 number of QCA cells in its implementation with a latency of 3 clock zones. The proposed 1-bit FA design conception has been checked for its structure robustness by designing various 2, 4, 8, 16, 32 and 64-bit FA designs. The proposed FA designs save power from 46.87% to 25.55% at maximum energy dissipation of circuit level, 39.05% to 23.36% at average energy dissipation of circuit-level and 42.03% to 37.18% at average switching energy dissipation of circuit level. Originality/value This paper fulfills the gape of focused research for RMG with its detailed mathematical modeling analysis.
Effects of Recent Climate Change on Maize Yield in Southwest Ecuador

In recent years, evidence of recent climate change has been identified in South America, affecting agricultural production negatively. In response to this, our study employs a crop modelling approach to estimate the effects of recent climate change on maize yield in four provinces of Ecuador. One of them belongs to a semi-arid area. The trend analysis of maximum temperature, minimum temperature, precipitation, wind speed, and solar radiation was done for 36 years (from 1984 to 2019) using the Mann–Kendall test. Furthermore, we simulated (using the LINTUL5 model) the counterfactual maize yield under current crop management in the same time-span. During the crop growing period, results show an increasing trend in the temperature in all the four studied provinces. Los Rios and Manabi showed a decreasing trend in radiation, whereas the semi-arid Loja depicted a decreasing precipitation trend. Regarding the effects of climate change on maize yield, the semi-arid province Loja showed a more significant negative impact, followed by Manabi. The yield losses were roughly 40 kg ha−1 and 10 kg ha−1 per year, respectively, when 250 kg N ha−1 is applied. The simulation results showed no effect in Guayas and Los Rios. The length of the crop growing period was significantly different in the period before and after 2002 in all provinces. In conclusion, the recent climate change impact on maize yield differs spatially and is more significant in the semi-arid regions.
The effect of ownership and management structure on family businesses performance

Abstract The study examines the structure of ownership and management of family businesses and investigates whether it influences the performance of family businesses or not. The interplay between family, ownership, and management of business creates a setting for family businesses that promotes the performance of the family businesses. Statistical population is family businesses of the food industry in Tehran Province of Iran. One hundred and sixty-three CEOs of family businesses of the food industry were analyzed. Data were collected using a questionnaire survey from their CEOs. We observe that the ownership and management structure of family businesses influence the performance of family businesses in a positive way. We conclude in accordance with other theories that companies owned by the families are characterized by higher performance.
Nature and outcome of malignant goiter: a revisit

Introduction the aim of this retrospective study is to review patients with malignant goiter, as regards their nature, demographic characterization, clinical presentation and preoperative histopathological data. Methods the study focused on a period of 4 years from December 2015 to January 2019. Patients´ demographic data, clinical presentation, Intra-operative findings, Pre and postoperative histopathological staging and grading were all recorded. Postoperative follow up whether early or late were also included. Results a total of 100% (n = 65) patients underwent surgery. The female to male ratio was found to be 5:1 (48 females and 17 males). Solitary nodule was the main clinical presentation in 80% (n = 52) of cases while 20% (n = 13) were multinodular swellings. Papillary carcinoma was recorded in 80% (n = 52) of patients while in 15.4% (n =10) of patients were having follicular carcinoma. The remaining 4.6% (n = 3) suffered of lymphoma; no medullary or anaplastic tumors were reported. Conclusion thyroid cancer is the most commonly encountered endocrinal malignancy at our institute. Fine Needle Aspiration Cytology (FNAC) showed a high percentage of reliability in diagnosing thyroid cancer among our series. It is recommended to adapt this technique in initial screening of goiter patients in our local setting.
The Predicament of Post-Displacement Amidst Historical Sites: A Design-based Correlation Between People and Place

ABSTRACT This article investigates the predicament of the presence of internally displaced persons (IDPs) near sites that have significant historical value. Particularly at the Aqueduct of Cairo, Egypt, established in AD 1176, this scene materializes as a result of facultative choices of IDPs or a group that decision-makers have forcibly displaced to save lives. The work advances development of a design-based approach to overcoming the predicament of this crucial relationship, following an argumentative review of heritage conservation policies in historical sites that host IDPs. To develop this approach, an ex post facto study of the site of the Aqueduct was conducted using two methods. The first is a qualitative approach, through interviews with experts who have participated in similar projects, to rank the design qualities of the proposed approach. The interview extended to 12 elderly people living on the site who described the urban changes. The second method is a cartography investigation, using morphological analysis to ground the precedence of design factors that reveal transformations made by diverse groups of citizens in five districts established in different periods, alongside this aqueduct. The results show the relevance of ranking these design factors, induced from theories such as place theory and the right to heritage. The case study demonstrates that users’ participation in the decision-making process should increase. The conclusion articulates the spatial configuration of historical monuments in their context, with a deep awareness of procedures, agents, and beneficiaries.
Narrowing the College Readiness Gap: Assessing GEAR UP Iowa's Intermediate Impact on Underserved Students

Abstract Earning a postsecondary degree or credential is increasingly important for individuals to succeed in the rapidly changing, global economy. College access programs like Gaining Early Awareness and Readiness for Undergraduate Programs (GEAR UP) serve to increase high school graduation and college readiness for underserved youth. This quasi-experimental study examined intermediate GEAR UP outcomes for GEAR UP Iowa 2.0 students (N = 4,845) and non-GEAR UP comparison students (N = 25,926). Among students who had participated in the program from 7th through 10th grade, GEAR UP students demonstrated higher attendance rates and increased standardized test scores with more impact shown among individuals from lower socioeconomic families. The implications and avenues for future research are discussed.
Evaluation of changes in food properties and mineral composition of tiger nuts at variable drying temperatures

Effective storage conditions can resolve the challenge of food scarcity and extinction of certain foodspecies. Therefore, this study investigated the changes in the food properties and mineral composition of tiger nuts attemperatures of 23, 40, 55, 80 and 100°C. Results show that while the temperature of 55°C influenced water, crude proteinand carbohydrate contents retention in the tiger nuts, fats were better retained at 80°C. This indicates that food nutrientsand properties of tiger nuts should be better retained at temperatures ≥ 50°C
The Impact of The [TIMP-2] × [IGFBP7]-Guided Checklist for Early Recognition and Treatment of Acute Illness on The Prevention of Acute Kidney Injury In Patients With Septic Shock

Background: Sepsis is the main aetiology of acute kidney injury (AKI) in critically ill patients, with high morbidity and mortality. The early identification of septic patients at high risk for AKI, followed by the timely implementation of appropriate interventions, is crucial for improving patient outcomes. Tissue inhibitor of metalloproteinase-2 and insulin-like growth factor-binding protein 7 ([TIMP-2] × [IGFBP7]) are promising biomarkers for AKI. Furthermore, the Checklist for Early Recognition and Treatment of Acute Illness (CERTAIN) is a tool for evaluating and treating acute illness in a timely manner based on best practices. We hypothesized that the use of this biomarker-guided point-of-care tool would improve the prognosis of patients with sepsis-associated acute kidney injury (SA-AKI). Methods: This was a single-centre prospective before-and-after study in the ICU of a comprehensive tertiary hospital. From June 2015 to December 2020, we assessed and managed patients with septic shock based on the biomarker-guided CERTAIN checklist. A checklist based on the Sepsis 3.0 bundle and urinary [TIMP-2] × [IGFBP7]>0.3(ng/mL)2/1000 within 12 hours were used as the inclusion criteria. The CERTAIN checklist includes the care bundles recommended in the Sepsis 3.0 bundle and Kidney Disease: Improving Global Outcomes (KDIGO) 2012 guidelines. The primary outcome was the incidence of moderate-to-severe AKI on the first day and within seven days after enrolment and mortality at 90 days after discharge from the hospital. The secondary outcomes were the ICU length of stay, non-mechanical ventilation duration, and the proportions of patients with the recovery of renal function and major adverse kidney events (MAKEs) at 90 days after exposure to events initiating AKI.Results: At the end of the study, 124 patients had been treated based on the checklist. When compared to a cohort of 112 patients matched for disease, the CERTAIN group had a lower proportion of patients needing mechanical ventilation, a lower proportion of patients needing vasoactive agents, a shorter ICU length of stay, and a higher proportion of patients with recovered kidney function. Furthermore, there was a trend towards a higher 90-day survival rate in the CERTAIN group.Conclusions: Implementation of the CERTAIN checklist was associated with improvements in the short-term recovery of kidney function, airway and haemodynamic management and mortality in patients with SA-AKI.Trial registration: NCT01973829; Date of registration: November 1, 2013.
Effect of NPK Fertilization Strategies on Growth, Yield, Nutrient Use Efficiency and Economic Benefits of Relay Intercropped Wheat in Cotton

I cotton-wheat cropping system, the food security is ensured altogether with economics by supplying wheat which is used as staple food in many countries of world and export earnings attained from cotton. It ensures higher total output because it fulfills necessities of the farmers to produce cotton as profitable cash crop and wheat as food crop to assure food supply (Smith and Varvil, 1982; Zhang et al., 2007, 2008a).
Mandatory partner rotation, audit timeliness and audit pricing

Purpose The purpose of this study is to provide further evidence on the ongoing debate on the costs and benefits of mandatory audit partner rotation (MPR). Specifically, this study examines how MPR simultaneously affects audit reporting lag (ARL) and audit fees (AFs). Design/methodology/approach A simultaneous approach was adopted to further shed light on the findings currently documented by this line of research. Findings Using Australian data, it was found that MPRs increase AFs but do not affect ARL simultaneously in the year of MPRs. It was also found that the departing audit partners do not charge higher fees or delay the completion of the audits in the final year before their departure and that neither AFs nor ARL changes significantly for the second round of MPRs. Originality/value To the best of the authors’ knowledge, no prior study on MPR has examined the issue using a simultaneous approach although failure to consider the simultaneous effect of interrelated variables may lead to estimation biases and problems of parameter identification. The results herein provide further evidence that the clients do not bear both costs of paying higher AFs and having the delayed audits and that the costs associated with MPRs do not occur earlier and the costs associated with MPRs may dissipate over time.
Accurate Estimation of Band Offsets in Group IV Polytype Junctions: A First-Principles Study

Recent advances in the fabrication of group IV homojunctions made by cubic-diamond (3C) and hexagonal-diamond (2H) phases call for a detailed understanding of the physics underlying their electronic structure. In this work, we employ hybrid density functional theory (hybrid-DFT) calculations to study the structural and electronic properties of Si and Ge polytype junctions. Starting from high-resolution transmission electron microscopy (HRTEM) micrographs of 2H/3C Si nanowires, we build a computational model that takes into account both crystal-phase effects and the length of the junction. We obtain accurate estimations of the magnitudes of the band offsets: In particular, we show that 2H/3C Si interfaces induce a type-II band alignment, whereas the Ge structures exhibit a type-I band offset. Furthermore, both Si and Ge homojunctions have direct gaps that are smaller than those of the bulk 3C phase. Finally, we demonstrate that, in all of the considered systems, varying the thickness of the hexagonal phase.
Centrifugal Filter-Assisted Block Freeze Crystallization Applied to Blueberry Juice

The impact of centrifugal-filter assisted block freeze crystallization (CFBFC) on the physicochemical parameters, total phenolic content (TPC), total anthocyanin content (TAC), and total flavonoid content (TFC), antioxidant activity (AA) and process parameters applied to blueberry juice was studied. Additionally, CFBFC was contrasted with gravitational BFC (GBFC) and centrifugal BFC (CBFC) techniques. For CFBFC process, the solutes values were ≈35.9 °Brix (fresh juice ≈13.8 °Brix), with a very dark red/purple color. Moreover, the bioactive components values presented a significant increase of 2.1, 2.0, 1.8, and 3.1 times compared to the initial TPC, TAC, TFC, and AA values, respectively, and these values were higher than GBFC and CBFC techniques. For efficiency, percentage of concentrate, and solute yield, CFBFC showed values close to 86%, 81%, and 0.9 (kg/kg), respectively, which were higher values than GBFC (48%, 38%, and 0.5 (kg/kg)) and CBFC (79%, 68%, and 0.7 (kg/kg)). Therefore, this research offers new benefits with the addition of the filter in the centrifugal BFC, and thus, CFBFC offers an advantage due to the better separation than GBFC and CBFC, since the filter can be designated as a second separation stage, and only one cycle is necessary to obtain high quality properties in the final solution.
Study on Mechanical Properties of Gravelly Sand under Different Stress Paths

To investigate the strength and deformation characteristics of gravelly sand on the Qinghai-Tibet Plateau under different stress paths, a series of triaxial shear tests was conducted under confining pressures of 50–400 kPa in four types of stress path conditions of conventional triaxial compression (CTC) (drained and undrained), triaxial compression (TC), and reduced triaxial compression (RTC). We can see from the test results that gravelly sand samples show strain hardening and shear contraction under the CTC (drained), TC, and RTC during the shearing process but exhibit strain softening under the CTC (undrained). To explore the microscopic deformation mechanism of gravelly sand, a characteristic angle θ was defined to reflect the relative movement of soil particles. The relationship between principal stress ratio σ1/σ3 and characteristic angle θ and that between void ratio e and characteristic angle θ were derived. Subsequently, the relationship expression of stress ratio η (q/p) and void ratio e was established, and the trend of void ratio e with the stress path was studied. To describe the strain hardening and strain softening characteristics of gravelly sand in different stress paths, a new dilatancy equation was obtained by introducing the characteristic state stress ratio Mc into the dilatancy equation of the modified Cam-Clay model based on the state-dependent dilatancy theory. Finally, an elastoplastic constitutive model of gravelly sand was established by applying a nonassociate flow rule. All model parameters can be determined by triaxial shear tests under different stress paths, and the comparison results show that the proposed model can well reflect the mechanical behaviors of gravelly sand under different stress paths.