Miracle-dz/UniFAR-FTUs huggingface dataset:
Correlation Between Antioxidant Property and Total Phenolic and Flavonoid Content of Azadirachta indica A Juss Flowers

The present study investigated the antioxidant activity of shade dried neem flower powder extracts by DPPH, phospomolybdenum, and FRAP methods respectively. The antioxidant activity of different extracts of neem flower powder has been investigated. Among them, 80% hydroalcoholic extract displayed the highest scavenging activity with the IC50 value of 18 mg/L in phospomolybdenum assay, 29 mg/L in DPPH, 30 mg/L in FRAP assay. Whereas Pet. ether (PE) extract shows lowest antioxidant potential amongst them with the IC50 value of 76 mg/L in FRAP, 37 mg/L DPPH, 28 mg/L in phospomolybdenum assay. On examining the total phenolic and flavonoid content of extracts, 80% hydroalcoholic extract possesses the greatest phenolic content about 83.88 mg/L followed by methanol, acetone and PE about 62.05, 7.52, 3.56 mg/L respectively. The highest flavonoid content of 57.36 mg/L in 80% hydroalcoholic extract followed by methanol, acetone and PE about 20.56, 11.25, 1.56 mg/L respectively. The order of total phenolic and flavonoid content of extracts are found to be: 80% hydroalcoholic > methanol > acetone > pet. ether respectively. The correlation between the antioxidant and total phenolic and flavonoid content was calculated using Prism Pad software and observed at 95% confidence interval level. From the correlation graph, it is observed that there is a good correlation between antioxidant, total phenolic (phospomolybdenum assay, R2 – 0.702), and total flavonoid (DPPH assay, R2 – 0.665) content, and it is possible to suggest that total phenolic and flavonoid content of the plant extracts are the reason for the antioxidant activity.
Conjoined Yet Decoupled Wideband Multiantenna MIMO Linear Patch Array

A conjoined yet decoupled wideband multi-antenna MIMO linear patch array (LPA) based on using a wideband patch antenna with dual slanted (±45°) shorting metal walls as a building antenna unit (BAU) is presented. The BAU alone can have a very wide operating band of larger than 4 GHz (about 3.25-7.40 GHz, a fractional bandwidth of about 78%). Owing to the antenna’s dual shorting metal walls, it allows arbitrary antenna units to be directly connected in series into a linear patch array with high port isolation (>20 dB) over the very wide band, with no additional decoupling elements required. A four-antenna LPA constructed by using four BAUs is demonstrated. In addition to the high port isolation, the four-antenna LPA can generate four uncorrelated waves with their measured envelope correlation coefficients (ECCs) less than 0.03 over the very wide band almost same as that of the BAU alone. In addition, the proposed MIMO LPA has an all-metal structure, with no substrate materials required. The obtained results make it promising for MIMO access-point application to cover the 5G band of 3.3-5.0 GHz and the unlicensed or mobile band of 5.925-7.125 GHz. Details of the BAU-based wideband multi-antenna MIMO LPA and the experimental results of the four-antenna LPA are presented.
Stress Classification Using Brain Signals Based on LSTM Network

The early diagnosis of stress symptoms is essential for preventing various mental disorder such as depression. Electroencephalography (EEG) signals are frequently employed in stress detection research and are both inexpensive and noninvasive modality. This paper proposes a stress classification system by utilizing an EEG signal. EEG signals from thirty-five volunteers were analysed which were acquired using four EEG sensors using a commercially available 4-electrode Muse EEG headband. Four movie clips were chosen as stress elicitation material. Two clips were selected to induce stress as it contains emotionally inductive scenes. The other two clips were chosen that do not induce stress as it has many comedy scenes. The recorded signals were then used to build the stress classification model. We compared the Multilayer Perceptron (MLP) and Long Short-Term Memory (LSTM) for classifying stress and nonstress group. The maximum classification accuracy of 93.17% was achieved using two-layer LSTM architecture.
Identificación de candida en cavidad bucal de pacientes con diabétes y vih/sida

Introducción: La Cándida es un microorganismo invasivo que pasa a ser patógeno cuando hay una alteración en el equilibrio de la flora o en la debilitación del huésped. Puede llegar a generar infecciones importantes ya sea en personas sanas e inmunodeficientes. Objetivo: caracterizar Cándida en dos condiciones patológicas diferentes como lo son la diabetes, Virus de la inmunodeficiencia adquirida (VIH) y en el Síndrome de inmunodeficiencia adquirida (SIDA). Método: Se llevó a cabo una revisión sistemática según el protocolo basado en la lista de comprobación de la declaración PRISMA utilizando las bases de datos: Clinical Key®, Medline®, PubMed®, Scielo® y revistas indexadas. Resultados: La enfermedad en la cual hubo mayor prevalencia de infecciones por Cándida fue el VIH/SIDA, el tipo de Cándida que se encontró fue la C. albicans, el tipo de candidiasis que se presentó con mayor frecuencia en individuos con VIH/SIDA fue la Pseudomembranosa y Eritematosa. El tipo de diabetes más común fue la diabetes mellitus tipo II, el tipo de Cándida más común fue la C.albicans, la C. glabrata, C. tropicalis y la C.krusey el tipo de candidiasis que prevaleció fue la eritematosa. Conclusión: Podemos concluir quea C. albicans se encuentra con mayor predominio entre las enfermedades orales en paciente inmunocomprometidos y con VIH/SIDA, por la susceptibilidad del organismo a ciertas infecciones.
Bangkok Street Food Vendors (SME) Business Continuity during COVID-19 Pandemic

Aims: This study aimed at capturing the perceptions of Bangkok street food vendors related to the business continuity of SMEs during the covid-19 pandemic. Study Design: The study design followed the 7 Ps of the service marketing model: product, price, place, promotion, process, physical evidence, and people related to street food. Place and Duration of Study: The study took place in Bangkok, Thailand from Summer 2021 until Fall of 2021. Methodology: We included 200 participants (66 men, 124 women; age range 18-80 years) who were SME street food vendors, 40% of them were under 40 years old with 59% having no university education and 35% with a bachelor degree. Two-thirds of the vendors (86%) earned less than 500 USD a month. Results: In terms of product the vendors stuck to the favorites (mean 4.34 and SD 0.97) trying to maintain quality and quantity while keeping prices constant as much as possible (mean 4.35 and SD 0.89). The most effective promotion was the 50/50 government food substitute co-payment (mean 4.69 and SD 0.99). Place changed from sit-down restaurants to take-away (mean of 4.77 and SD 0.96) and home delivery via food delivery apps (FDA). Process changes due to social distancing included screens and fewer tables (mean of 4.51 and SD 0.65) The number one physical evidence was wearing face masks and sanitization (mean 4.03 and SD 0.82). People changed in terms of customer mix with fewer foreigners and local tourists (mean of 4.77 and SD 0.75) as well as fewer migrant workers and more government agents taking a closer look at street food hawkers. Conclusion: Street food hawkers adjusted all 7Ps of the marketing mix to assure business continuity during the covid-19 pandemic as discussed above. Moving to food delivery along with face masks and social distancing were the biggest changes. These predictors, however, would benefit from further work to validate reliability in Thailand, ASEAN, and worldwide.
Haemodynamic Signatures of Temporal Integration of Visual Mirror Symmetry

EEG, fMRI and TMS studies have implicated the extra-striate cortex, including the Lateral Occipital Cortex (LOC), in the processing of visual mirror symmetries. Recent research has found that the sustained posterior negativity (SPN), a symmetry specific electrophysiological response identified in the region of the LOC, is generated when temporally displaced asymmetric components are integrated into a symmetric whole. We aim to expand on this finding using dynamic dot-patterns with systematically increased intra-pair temporal delay to map the limits of temporal integration of visual mirror symmetry. To achieve this, we used functional near-infrared spectroscopy (fNIRS) which measures the changes in the haemodynamic response to stimulation using near infrared light. We show that a symmetry specific haemodynamic response can be identified following temporal integration of otherwise meaningless dot-patterns, and the magnitude of this response scales with the duration of temporal delay. These results contribute to our understanding of when and where mirror symmetry is processed in the visual system. Furthermore, we highlight fNIRS as a promising but so far underutilised method of studying the haemodynamics of mid-level visual processes in the brain.
The association between 13 Reasons Why and suicidal ideation and behaviors, mental health symptoms, and help-seeking behaviors in youths: An integrative systematic review

Abstract Background: The series 13 Reasons Why (13RW) raised critical concerns regarding the deleterious impact of fictional suicide portrayal on suicidal behaviors as it depicted the suicide of an adolescent without following the recommendations on media reporting of suicide portrayal. We aimed to assess the impact of 13RW on suicide rates, suicide attempts (SA), and suicidal ideation (SI) prevalence, mental health symptoms, and help-seeking behaviors in youths. Method: Following PRISMA guidelines, we systematically searched for articles on three databases up to January 2022. Results: A total of 17 articles met the inclusion criteria. Five large studies reported a significant increase in deaths by suicide and SA in youths in the United States and Canada after the release of 13RW. Mood deterioration or more intensive depressive symptoms were reported in vulnerable adolescents who watched 13RW. Youths with previous history of depression, SA, or SI, and those who identified themselves with the main character were at higher risk to report an increase in SI or mood deterioration. Help-seeking behaviors significantly decreased, but the effects on mental health awareness tended to be positive after the release of 13RW. Conclusion: Our review reveals critical results about the impact of 13RW on youths. We report an alarming harmful impact on suicide and SA rates, especially in more vulnerable youths. The reported positive effects do not balance the deleterious impact of 13RW.
A Flexible Framework for Offline Effectiveness Metrics

The use of offline effectiveness metrics is one of the cornerstones of evaluation in information retrieval. Static resources that include test collections and sets of topics, the corresponding relevance judgments connecting them, and metrics that map document rankings from a retrieval system to numeric scores have been used for multiple decades as an important way of comparing systems. The basis behind this experimental structure is that the metric score for a system can serve as a surrogate measurement for user satisfaction. Here we introduce a user behavior framework that extends the C/W/L family. The essence of the new framework - which we call C/W/L/A - is that the user actions that are undertaken while reading the ranking can be considered separately from the benefit that each user will have derived as they exit the ranking. This split structure allows the great majority of current effectiveness metrics to be systematically categorized, and thus their relative properties and relationships to be better understood; and at the same time permits a wide range of novel combinations to be considered. We then carry out experiments using relevance judgments, document rankings, and user satisfaction data from two distinct sources, comparing the patterns of metric scores generated, and showing that those metrics vary quite markedly in terms of their ability to predict user satisfaction.
Harmonics Monitoring Survey on LED Lamps

Light Emitting Diode (LED) lamps are being increasingly used in many applications. These LED lamps operate using a driver, which is a switching device. Hence, LED lamps will be a source of harmonics in the power system. These harmonics if not well treated, may cause severe performance and operational problems. In this paper, harmonics (amplitude and phase angles) generated by both LED lamps and conventional fluorescent lamps will be studied practically. Then they will be analyzed and evaluated. Compared to each other harmonics generated by both LED and conventional florescent lamps, self mitigation may occur based on the phase angle of these harmonics. All data will be measured using power analyzer and will be done on a sample of actual lamps.
1.65 µm square-FP coupled cavity semiconductor laser for methane gas detection

We report a 1.65 μ m square-Fabry – Pérot (FP) coupled cavity semiconductor laser for methane gas detection. The laser output optical power can reach 7.4 mW with the side mode suppression ratio about 40 dB. The wavelength tuning range is 2 nm by adjusting the FP cavity injection current, covering the methane absorption line at 1653.72 nm. The lasing wavelength can also be tuned by adjusting the square microcavity injection current or temperature, respectively. Methane gas detection is successfully demonstrated utilizing this laser.
Avaliação do impacto do Prouni na nota Enade dos estudantes

O objetivo do estudo é analisar o efeito do Programa Universidade para Todos (Prouni) ao longo da distribuição de notas dos alunos no Exame Nacional de Desempenho de Estudantes (Enade) de 2015 a 2017. Para isso, estimou-se o efeito quantílico do tratamento a partir do método proposto por Firpo (2007). Os resultados indicaram que o impacto do Prouni, além de ter sido positivo ao longo de toda a distribuição de notas (principalmente para os alunos que receberam bolsa integral), também foi maior para os alunos que declararam renda familiar de até 3 salários mínimos e para aqueles matriculados em instituições com conceito de qualidade 4 e 5.
Cutaneous cancers in the Africans: Systematic review

Skin cancers are uncommon in Africans and dark‐skinned people but when diagnosed they often have a poor prognosis. Darker skin has increased photoprotection against the high‐intensity ultraviolet radiation (UVR) of the tropics and the subtropics due to high eumelanin content. While UVR has been found to play a significant role in the pathogenesis of cutaneous malignancies in Caucasians, it is of less significance in Africans.
Adults’ Memory for a Maltreatment-Related Childhood Experience: Interview Protocols

Adults’ claims of decades-old child maltreatment raise questions about how to obtain accurate memories about childhood events. In this study, adults who experienced a documented child maltreatment medical examination when they were 3 to 16 years old (Time 1) were interviewed 2 decades later (Time 2). The adults (N = 115) were randomly assigned to one of three interview-protocol conditions: a standard forensic interview, the cognitive interview (CI) with mental reinstatement, or the CI with mental- and physical-context reinstatement. The CI increased accuracy by dampening reports of potentially schematic but nonexperienced information. Younger age at Time 1 was associated with memories that were less complete but not more inaccurate. A greater number of Time 2 posttraumatic-stress-disorder symptoms predicted both correct and incorrect (omissions and commissions, respectively) answers to specific questions and incorrect answers to misleading questions; commission errors were associated with Time 1 physical-abuse status. Theoretical implications and clinical and legal applications are discussed.
Proteomic Profiling and Pathway Analysis of Acid Stress-Induced Vasorelaxation of Mesenteric Arteries In Vitro

Although metabolic acidosis is associated with numerous pathophysiological conditions and its vasorelaxation effects have been well described in different animal and culture models, the molecular mechanisms of acidosis-induced vasorelaxation are not fully understood. Mesenteric artery models have been used extensively to examine the vascular response to various pathophysiological conditions. Our previous studies and several other reports have suggested the vascular responses of goat mesenteric arteries and human arteries to various stimuli, including acidic stress, are highly similar. In this study, to further identify the signaling molecules responsible for altered vasoreactivity in response to acidic pH, we examined the proteomic profile of acid stress-induced vasorelaxation using a goat mesenteric artery model. The vascular proteomes under acidic pH were compared using 2D-GE with 7 cm IPG strips and mini gels, LC-MS/MS, and MALDI TOF MS. The unique proteins identified by mass spectroscopy were actin, transgelin, WD repeat-containing protein 1, desmin, tropomyosin, ATP synthase β, Hsp27, aldehyde dehydrogenase, pyruvate kinase, and vitamin K epoxide reductase complex subunit 1-like protein. Out of five protein spots identified as actin, three were upregulated > 2-fold. ATP synthase β was also upregulated (2.14-fold) under acid stress. Other actin-associated proteins upregulated were transgelin, desmin, and WD repeat-containing protein 1. Isometric contraction studies revealed that both receptor-mediated (histamine) and non-receptor-mediated (KCl) vasocontraction were attenuated, whereas acetylcholine-induced vasorelaxation was augmented under acidosis. Overall, the altered vasoreactivity under acidosis observed in the functional studies could possibly be attributed to the increase in expression of actin and ATP synthase β.
Modelling, state estimation & optimal charging control for a lithium-ion battery

L ITHIUM-ION (Li-ion) batteries are well-suited chemistry technology for a myriad of applications such as portable electronic devices, electrified vehicles and energy storage in power systems. To satisfy consumers’ demanding requirements, the batteries are desirable to have high energy/power density, long life cycles and fast charge capability but provide these at affordable costs with safe and reliable operations. However, the current batteries are limited in one or more of these characteristics. This thesis leverages physics-based models and model-based estimation/control techniques to improve battery performances. The first phase of this project focuses on battery model simplification. A physics-based Li-ion battery model capturing the coupled electrochemical, thermal, electrical and ageing dynamics is first developed. Through identification of disperse time-scales inherent in the initial model, a framework for PDE battery model simplification is proposed by using singular perturbations and averaging theory. The novelty arises from the systematic procedure for model simplification through which the underpinning assumptions can be explicitly stated. As a consequence, libraries of simplified battery models with interconnections are obtained and applicable for a range of applications. Simulations are conducted to validate the low order models against the initial model. The capability of the proposed modelling framework is demonstrated on a model-based evaluation procedure for charging strategies. With appropriate battery models obtained, model-based algorithms are developed to estimate the battery state-of-charge (SOC) and state-of-health (SOH). First, a nonlinear es-
Influence of Fall Hazard Warnings on Construction Sites

- A high proportion of accidents in the manufacturing industry are caused by falls. In particular, the highest number of accidents occur at openings and it has been proven that the main cause of these accidents is inattentional blindness. The safety requirements for site openings vary from country to country. This paper examines the differences in the effectiveness of different warnings for opening covers through an experiment on inattentional blindness. The results of the study show that there is a significant difference between the response to different opening cover warnings in terms of simple warnings about the hazards of openings. The highest response rate for the presence or absence of openings in the floor is obtained when the opening cover warning is written in text. When the position and number of openings are considered, wooden covers without any warning have a higher response rate. It is also found that yellow warning covers help participants to focus on the question being asked. However, it is also found that there is no significant difference in the hazard caused by inattentional blindness between different opening cover warnings for important issues related to fall prevention, such as the presence or absence of a cover and when the cover was removed. It is clear that inattentional blindness cannot be eliminated by changing the warning on the opening cover. Therefore, it is recommended that fall prevention warnings and cautions at openings are targeted at workers who may remove the covers. The results of the study may provide effective recommendations for the future management of site openings.
GREEN TECHNOLOGIES OF LIVING ENVIRONMENT: CONCEPTS, TERMS, STANDARDS

The article deals with the main principles, concepts, terms that characterize the scientific approach to the formation of a safe and comfortable living environment on the basis of the development and wide application of the sustainable development principles in urban development practice. Definitions of the basic concepts related to the tasks of developing green technologies of the living environment are proposed. The purpose of the study is to select methodological tools for creating a national system of green standardization and certification of urban development objects. This requires technical regulation and standardization; analysis and management of object life cycles; integrated safety, building materials science; energy efficiency and energy saving; development and application of green standards; BIM-technology; rating systems of green certification; construction systems. It is established that the main characteristics that define the “green technologies” concept are energy efficiency, safety, non-wasting, comfort. The factors preventing the achievement of the stated purposes are shown. Positive shifts in this direction and examples of practical implementation of voluntary certification systems for urban development projects have been noted.