Miracle-dz/UniFAR-FTUs huggingface dataset:
Enhanced Two‐Photon‐Pumped Emission from In Situ Synthesized Nonblinking CsPbBr3/SiO2 Nanocrystals with Excellent Stability

Perovskites have emerged as a class of cutting‐edge photovoltaic and light‐emitting materials. However, poor stability due to high moisture sensitivity and undesirable blinking severely limits their further application. Here, to solve these problems without destroying optoelectronic performance, a simple process for the fabrication of nonblinking CsPbBr3 quantum dots (QDs) is investigated. By embedding CsPbBr3 QDs into waterless silica spheres, the blinking of QDs can be strikingly suppressed, with an effective improvement of the moisture resistance and enhanced photostability. The silica sphere can also prevent anion exchange of different halide elements between perovskite QDs. Ultrastable amplified spontaneous emission (ASE) from QDs/SiO2 with no degradation for at least 12 h is observed under continuous laser irradiation (4 × 107 continuous intense laser shots), with almost no ASE degradation evident after 60 d of storage under ambient conditions. Most notably, the ASE threshold (Pth) of CsPbBr3 QDs is decreased by 50% and the relative efficiency increased by 388%. The perovskite QDs coated by the waterless SiO2 shell provide a novel platform for realizing perovskite nanomaterials with improved operational stability, nonblinking properties, and enhanced emission all at the same time, which is especially attractive for photovoltaic and light‐emitting device applications.
Discriminador binario de imaginación visual a partir de señales EEG basado en redes neuronales convolucionales

Las interfaces cerebro-máquina (Brain-Computer Intarface, BCI, en inglés) son una tecnología que permite la comunicación directa entre el cerebro y el mundo exterior sin necesidad de utilizar el sistema nervioso periferico. La mayoría de sistemas BCI se centran en la utilización de la imaginación motora, los potenciales evocados o los ritmos corticales lentos. En este trabajo se ha estudiado la posibilidad de utilizar la imaginación visual para construir un discriminador binario (brain-switch, en inglés). Concretamente, a partir del registro de señales EEG de siete personas mientras imaginaban siete figuras geométricas, se ha desarrollado un BCI basado en redes neuronales convolucionales y en la densidad de potencia espectral en la banda α (8-12 Hz), que ha conseguido distinguir entre la imaginación de una figura geométrica cualquiera y el relax, con un acierto promedio del 91 %, con un valor Kappa de Cohen de 0.77 y un porcentaje de falsos positivos del 9 %.
Determination of Time Dependent Antibacterial Activities of Curcumin, Carvacrol and Styrax Liquidus on Salmonella Enteritidis

: Salmonella Enteritidis is amongst the most common causes of foodborne salmonellosis. Multi-drug resistant Salmonella strains has been associated with treatment failures. Plant-derived phytochemicals may be an alternative to antibiotics in combating these bacteria. The purpose of this study is to investigate the antibacterial activity of curcumin, carvacrol and styrax liquidus on S. Enteritidis and S. Enteritidis PT4. Minimum inhibitory concentration (MIC) values of these substances were detected at 1.5, 3, 7.5 and 24 h by broth microdilution method to evaluate their time-dependent antibacterial activities. The findings of the present study showed that MIC values of carvacrol, curcumin and styrax liquids for both S . Enteritidis and S . Enteritidis PT4 were 125.0 µg/mL, 132.5 µg/mL, 31.3 mg/mL for 24 h, respectively. Also, a time-dependent change was observed in the MIC values of curcumin. Carvacrol, curcumin and styrax liquidus can be used to provide antimicrobial effect on S . Enteritidis and S . Enteritidis PT4 in food applications, taking into account the MIC values and contact times.
Investigating the Critical Issues for Enhancing Sustainability in Higher Education Institutes in Thailand

Higher Education Institutions (HEIs), by and large, have increasingly committed to integrate sustainable development (SD) into their policies, practices, and programs. Recently, there have been several sustainability assessment tools specifically developed for HEIs. Many HEIs, especially small-to-middle sized HEIs in Thailand, are planning to enhance SD but are reluctant due to resource requirements. This study was conducted to investigate important sustainability implementation issues, including the effect of HEI sizes and UI GreenMetric participation. A weighting approach on sustainability dimensions and issues was utilized, and HEI’s sustainability reports and official websites were reviewed to evaluate their sustainability performance of large-, middle-, and small-sized HEIs as well as UI GreenMetric participants and non-participants in Thailand. The findings reveal that the issues of the sustainability-integrated vision and strategy, safety and well-being, waste, and the SD-enhancing educational system were fundamentally critical for HEI sustainability. Moreover, most of the large-sized HEIs in Thailand that participated in UI GreenMetric were evaluated to have higher sustainability performance than others, apparently in administration, environment, and education/research dimensions. This study supports the necessity for a sustainability assessment tool for HEIs.
The sensitivity of Neotoma to climate change and biodiversity loss over the late Quaternary

Abstract The late Quaternary in North America was marked by highly variable climate and considerable biodiversity loss including a megafaunal extinction event at the terminal Pleistocene. Here, we focus on changes in body size and diet in Neotoma (woodrats) in response to these ecological perturbations using the fossil record from the Edwards Plateau (Texas) across the past 20,000 years. Body mass was estimated using measurements of fossil teeth and diet was quantified using stable isotope analysis of carbon and nitrogen from fossil bone collagen. Prior to ca. 7000 cal yr BP, maximum mass was positively correlated to precipitation and negatively correlated to temperature. Independently, mass was negatively correlated to community composition, becoming more similar to modern over time. Neotoma diet in the Pleistocene was primarily sourced from C3 plants, but became progressively more reliant on C4 (and potentially CAM) plants through the Holocene. Decreasing population mass and higher C4/CAM consumption was associated with a transition from a mesic to xeric landscape. Our results suggest that Neotoma responded to climatic variability during the terminal Pleistocene through changes in body size, while changes in resource availability during the Holocene likely led to shifts in the relative abundance of different Neotoma species in the community.
Relevance of the North‐South Electric Field Component in the Propagation of Fast Convective Earthward Flows in the Magnetotail: An Event Study

Fast earthward plasma flows are commonly observed in the magnetotail plasma sheet. These flows are often termed as bursty bulk flows because of their bursty nature, and they are considered to be generated by magnetic reconnection. Close to the neutral sheet (Bx ∼ 0), the fast flows are considered to be associated with an enhanced dawn‐to‐dusk electric field (Ey > 0), which together with the northward magnetic field component (Bz > 0) protrude the plasma earthward via enhanced E × B‐drift. Sometimes, reversals in the dawn‐dusk velocity component perpendicular to the magnetic field (V⊥y) are measured in association with Bx sign changes in the flows. This suggests that the electric field component in the north‐south direction (Ez) can play a role in determining the dawn‐dusk direction of the enhanced drift. We present data measured by the Magnetospheric Multiscale, which demonstrate that Ez can have a dictating role for V⊥y of fast flows. Furthermore, it is shown that the critical contribution of Ez is not limited only to V⊥y, but it can also dominantly determine the enhanced drift of the fast flows in the X direction (V⊥x). The latter can occur also near and at the neutral sheet, which adds an alternative configuration to the conventional picture of Ey and Bz being the main players in driving the earthward fast flows. The domination of Ez in the studied events appears with potential signatures of an influence of a nonzero dawn‐dusk component of the interplanetary magnetic field (IMF By) on the magnetotail.
Environmetric study on air quality pattern for assessment in northern region of Peninsular Malaysia

Background and Objective: Causes of air quality problems detected are emission from vehicles, industrial emissions and open burning. The objective of this study was to determine the significant pollutant parameters contributing to air quality problems and also to look at air quality pattern at 12 air monitoring stations in the Northern region of Peninsular Malaysia (Perlis, Kedah, Pulau Pinang and Perak). Methodology: The data set was given from the Department of Environment, Malaysia (DOE) for the years 2002-2012 (11 years). Basically, air pollution index (API) parameters such as O3, SO2, CO, NO2 and PM10 were involved in this study. Therefore, environmental metric techniques used such as cluster analysis (CA), perform three smaller groups compared 12 stations which has a same characteristic. This clusterization was also used to look air quality pattern based on yearly and specific monthly basis. It were shown that, 2005 and 2006 has a more stand out and different pattern. The third quarter of these years showed predominant and different pattern due to transboundary pollution. Discriminant analysis (DA) was used for differentiating each class. The study found that there were establish different variables, between each class. Principal component analysis (PCA), combined with factor analysis (FA), was used to know significant pollutant parameters based on five pollutants/gases in the air pollution index (API) which cause many activities either internal or external factors. Results: The study found that SO2, NO2 and O3 are the major pollutants contributing to degradation of air quality in the Northern region due to the combustion process from vehicles and industries. Conclusion: As a result of using the envirometric technique for analyzing huge data sets become better understanding air quality pattern and more clearly identify significant air pollutant parameters.
Source pool diversity and proximity shape the compositional uniqueness of insular mammal assemblages worldwide

Islands have been the test bed of several theories in community ecology, biogeography, and evolutionary biology. Progress within these disciplines has given a more comprehensive and mechanistic understanding of the processes governing variation in species richness among islands. However, it remains unclear whether these same processes also explain variation in species and phylogenetic composition among islands. Integrating theory from ecology and biogeography, we infer the roles of dispersal, selection, and stochasticity on the composition of insular assemblages within archipelagos. We further assess the influence of source pool diversity and connectivity on the compositional uniqueness of insular assemblages.
DESIGN AND EVALUATION OF MODIFIED CHITOSAN BASED IN SITU GEL FOR OCULAR DRUG DELIVERY

Objective: The object of the present study was to formulate and evaluate in-situ gel of modified chitosan by using temperature triggered method to improve bioavailability. Methods: Modified chitosan-based moxifloxacin HCl was prepared by cold method. polaxomer 407 adding in distilled water and this solution kept in the refrigerator. Modified chitosan and moxifloxacin HCl was dissolved separately in distilled water and added to the polymeric solution with continuous stirring until thoroughly mixed. Prepared formulation was evaluated for drug content, gelling capacity, rheological study , in vitro drug release behavior, measurement of phase change temperature, antibacterial study, release kinetics, statistical analysis. Results: The prepared formulations were evaluated for their, drug content, gelation temperature, in vitro drug release studies, rheological study and release kinetics. All batches of in situ formulations had satisfactory p H ranging from 6.2±0.2, drug content between 98.8±0.2 showing uniform distribution of drug. As the concentration of each polymeric component was increased, there was a decrease in phase change temperature. The in vitro drug release decreased with increase in polymeric concentrations. The antibacterial efficiency of the selected formulation against staphylococcus aureus confirmed that designed formulation has prolonged effect and retained its properties against bacterial infection. Conclusion: The prepared in situ gelling formulation had the appropriate combination of polaxomer 407 and modified chitosan were suitable satisfactorily sustained the drug release from moxifloxacin HCl in situ gel. The prepared formulation of moxifloxacin HCl appears to be promising drug delivery for bacterial infectious disease.
Development of brand-communications to promote real estate market companies

Recently the competition in the real estate market has significantly increased. Therefore, the application of brand-communication strategies makes it possible to create a unique set of elements and other components of a brand considering the consumer's demands and the quality and efficiency of the company's operations. The proficiency in the development of brand-communication strategies and their most optimal implementation in a company's operations will make the developer's brand stand out compared to the competition and help establish a relationship of trust with loyal consumers and the mass media.
Temperature Analyses in Fused Filament Fabrication: From Filament Entering the Hot-End to the Printed Parts

This article analyzes temperature fields and their variations in fused filament fabrication (FFF) from the filament entering the hot-end to the printed parts, aiming at a deeper understanding of the thermal process of this additive manufacturing technology. A standard E3D print head assembly was mounted on a robot arm for printing. A stable filament feeding region was determined with an upper limit in the volume flow rate at different nozzle temperatures. Within the limit, the steady-state temperature fields inside the hot-end were studied by a computational fluid dynamics model. Simulations indicated that the temperature became less homogeneous at higher flow rates, leading to a lower extrudate temperature at the nozzle outlet. These outlet temperatures were analyzed, validated, and used as input to simulate temperature variations in printed parts with a self-developed open-access numerical model. An interlayer time similarity rule was found in printing single-walled geometries, which specifies temperature similarities at the same interlayer time. The findings provide new insights into FFF processes, pointing out opportunities for improved production efficiency and scalability to large-scale manufacturing.
Bayesian evaluation of privacy-preserving risk communication for user android app preferences

Purpose The purpose of this paper is to propose practical and usable interactions that will allow more informed, risk-aware comparisons for individuals during app selections. The authors include an explicit argument for the role of human decision-making during app selection and close with a discussion of the strengths of a Bayesian approach to evaluating privacy and security interventions. Design/methodology/approach The authors focused on the risk communication in mobile marketplace’s realm, examining how risk indicators can help people choose more secure and privacy-preserving apps. Combining canonical findings in risk perception with previous work in usable security, the authors designed indicators for each app to enable decisions that prioritize risk avoidance. Specifically, the authors performed a natural experiment with N = 60 participants, where they asked them to select applications on Android tablets with accurate real-time marketplace data. Findings In the aggregate, the authors found that app selections changed to be more risk-averse in the presence of a user-centered multi-level warning system using visual indicators that enabled a click-thru to the more detailed risk and permissions information. Originality/value Privacy research in the laboratory is often in conflict with privacy decision-making in the marketplace, resulting in a privacy paradox. To better understand this, the authors implemented a research design based on clinical experimental approaches, testing the interaction in a noisy, confounded field environment.
Precise detection of the size of monodisperse droplets considering the fluctuations induced by the droplet generation process

For droplet microfluidics, the electrical-detection method which can precisely detect the size of monodisperse droplets is demonstrated in this paper. In a Flow-focusing microdroplet generator, three pairs of the microelectrodes are allocated along the microchannel, and during the passing-by process of each droplet, both the length, the velocity and the production speed of the droplets can be obtained from the experimental measurements of the time-varying capacitance between each pair of the microelectrodes. Particularly, for different geometries of the Flow-focusing microchannel, the method of the electrical-detection is validated experimentally over a wide range of the typical conditions of monodisperse droplet production. In addition, the droplet size measured by the electrical-detection method is compared with that by the method of image processing, and the detection precision of the electrical-detection method is verified experimentally. Most importantly, by calculating the root-mean-square value of the droplet lengths for three pairs of the microelectrodes, the detection precision of the droplet size can be increased drastically.
Impact of Flexible Work Arrangements on Key Challenges to Work Engagement Among Older Workers

As workforces age, organizations are challenged to provide human resource management policies and practices that are responsive to the needs of older workers. Flexible work arrangements (FWAs)—practices that allow workers to influence when, where, and how work is completed—have been promoted as enabling older workers to maintain work engagement by decreasing demands of the work role, providing the autonomy to balance work and nonwork commitments, and signalling the value of workers to employers. The current study aimed to examine whether FWAs were effective in alleviating key challenges to work among older workers by assessing the impact of FWAs on the associations of physical health, mental health, and negative age-related stereotypes about older workers, with work engagement. Data were obtained from 1,834 workers aged 55–82 (age M = 63.3, 54% female) from a general random sample of older adults. Greater mental health and lower negative stereotypes predicted higher work engagement. Greater physical and mental health conveyed an indirect impact on engagement via lower perception of negative stereotypes. Greater FWAs displayed a weak negative association with the perception of negative stereotypes about older workers and reduced the association of negative stereotypes with work engagement. Access to FWAs may have a minor role in alleviating key risks to work engagement associated with mental and social challenges for an aging workforce. Considerations for future investigations of FWAs and their impact on risks to engagement among older workers are discussed.
Comparison of Experimental and Numerical Transient Drop Deformation during Transition through Orifices in High-Pressure Homogenizers

The droplet deformation in dispersing units of high-pressure homogenizers (HPH) is examined experimentally and numerically. Due to the small size of common homogenizer nozzles, the visual analysis of the transient droplet generation is usually not possible. Therefore, a scaled setup was used. The droplet deformation was determined quantitatively by using a shadow imaging technique. It is shown that the influence of transient stresses on the droplets caused by laminar extensional flow upstream the orifice is highly relevant for the droplet breakup behind the nozzle. Classical approaches based on an equilibrium assumption on the other side are not adequate to explain the observed droplet distributions. Based on the experimental results, a relationship from the literature with numerical simulations adopting different models are used to determine the transient droplet deformation during transition through orifices. It is shown that numerical and experimental results are in fairly good agreement at limited settings. It can be concluded that a scaled apparatus is well suited to estimate the transient droplet formation up to the outlet of the orifice.
Review on Performance Evaluation of Autonomous Healing of Geopolymer Composites

It is a universal fact that concrete is one of the most employed construction materials and hence its exigency is booming at a rocket pace, which in turn, has resulted in a titanic demand of ordinary Portland cement. Regrettably, the production of this essential binder of concrete is not merely found to consume restricted natural resources but also found to be associated with emission of carbon dioxide—a primary greenhouse gas (GHG) which is directly answerable to earth heating, resulting in the gigantic dilemma of global warming. Nowadays, in order to address all these impasses, researchers are attracted to innovative Geopolymer concrete technology. However, crack development of various sizes within the concrete is inevitable irrespective of its kind, mix design, etc., owing to external and internal factors viz., over-loading, exposure to severe environments, shrinkage, or error in design, etc., which need to be sealed otherwise these openings permits CO2, water, fluids, chemicals, harmful gases, etc., to pass through reducing service life and ultimately causing the failure of concrete structures in the long term. That is why instant repairs of these cracks are essential, but manual mends are time-consuming and costly too. Hence, self-healing of cracks is desirable to ease their maintenances and repairs. Self-healing geopolymer concrete (SHGPC) is a revolutionary product extending the solution to all these predicaments. The present manuscript investigates the self-healing ability of geopolymer paste, geopolymer mortar, and geopolymer concrete—a slag-based fiber-reinforced and a variety of other composites that endow with multifunction have also been compared, keeping the constant ratio of water to the binder. Additionally, the feasibility of bacteria in a metakaolin-based geopolymer concrete for self-healing the cracks employing Bacteria-Sporosarcina pasteurii, producing Microbial Carbonate Precipitations (MCP), was taken into account with leakage and the healing process in a precipitation medium. Several self-healing mechanisms, assistances, applications, and challenges of every strategy are accentuated, compared with their impacts as a practicable solution of autogenously-healing mechanisms while active concretes are subjected to deterioration, corrosion, cracking, and degradation have also been reviewed systematically.