Miracle-dz/UniFAR-FTUs huggingface dataset:
Antioxidant and Antimicrobial Activities of Green Synthesized Silver Nanoparticle Using Moringa Oleifera Seeds Extracts

Nanotechnology deals with materials in nanoscale that exhibit incredible chemical, physical and biological properties. This study is aimed at synthesizing silver nanoparticles from Moringa oleifera seed using aqueous and ethanol as solvents and compare their antioxidant as well as antimicrobial activities of these two synthesized nanoparticles. The synthesized nanoparticles were subjected to preliminary characterization using UV- spectroscopy to ensure their formation which were confirmed by attaining the plasmon resonance surface of both particles at 320nm. Standard assay for antioxidant scavenging of ferric ion and DDPH were employed and standard methods for drop plate technique, minimum inhibition concentration and minimum bactericidal/fungicidal concentrations were used. The results indicate that silver nanoparticles synthesized from ethanol extract (EEMS) has excellent ferric ion scavenging activity compared to silver nanoparticles synthesized from aqueous extract (AEMS), while AEMS has 2, 2-diphenyl-1-picrylhydrazyl (DPPH) scavenging potential compared to EEMS. Both nanoparticles show the antimicrobial efficiency were dose dependent but more inhibition zone was observed on EEMS using drop plate technique at 25mg/dl against all the organisms used (S. aureus, E. coli and C. albican). And in minimum inhibition concentrations, the result shows both particles inhibit the growth of all organisms at 6.25 µg/dl except against E. coli which is at 12.5 µg/ml by EEMS. Similarly, minimum bactericidal / fungicidal concentrations were the same in all organisms at 12.5 µg/ml except against C. albican which was at 6.25 µg/ml by EEMS. The finding revealed that both EEMS and AEMS are good antioxidants and antimicrobial agents and their activities are concentration dependent.
Low Cost and Precise Frequency Estimation in Unbalanced Three Phase Power Systems

Monitoring the voltage frequency is of great significance in power systems. In this paper we propose two novel frequency estimators, namely the unbalanced HAM-WLS (UHW) estimator and the weighted least squares fusion (WLSF) estimator, to identify the voltage frequency in unbalanced three-phase power systems. The UHW method modifies both the coarse search and the weighted least squares (WLS) post-processing step of our previous HAM-WLS algorithm, and thus removes the spectrum leakage caused by the fluctuant maxima of the signal periodogram in phase unbalanced grids. Meanwhile, a new alternative is used in the WLSF estimator to aggregate the signal information in three difference phases. Compared with the Clarke's transformation that merely maximizes signal to noise ratios (SNRs), the proposed WLSF assigns different weights to the single-phase estimates according to their estimation variances, leading to improved accuracy and higher reliability. Both proposed estimation algorithms employ the Fourier coefficient interpolation and the iterative leakage subtraction in the frequency domain to lower the computation complexity as well as the WLS technique as a post-processing step to enhance the estimation precision. Therefore, both estimators realize accurate estimates with low computational cost. The complexity calculation, simulations and experiments for various scenarios all support the analysis. The results also show that the WLSF estimator exhibits more precise and stable performance than the UHW estimator at the cost of requiring relatively higher computational effort.
Symptom Burden of Children with Cancer and Parental Quality of Life: The Mediating Role of Parental Stress

Background: The aim of this study was to investigate the association between children’s reported symptom burden and their parents’ quality of life, and whether parents’ perceived stress mediates this relationship. Method: this was a cross-sectional quantitative research study. Convenience sampling was used to recruit 80 pairs of parents and their children with cancer. Advanced statistical methods were used to analyse the mediating effects of parental stress between children’s symptom burden and parents’ quality of life. Results: The results showed that parental stress was the mediator in the relationship between children’s reported symptom burden and their parents’ quality of life. Conclusions: Symptom burden was prevalent in Chinese children with cancer living in the community. Children’s symptom burden is an important factor in predicting parental stress level, which simultaneously and directly lower parents’ quality of life. The evidence in this study enlarges the knowledge base about the mediating effect of parental stress on the association between the symptom burden of children with cancer and their parents’ quality of life. This evidence is crucial in paving the way for the development of interventions that improve the parental quality of life through stress-reduction programs.
Making Hospitals Sustainable: Towards Greener, Fairer and More Prosperous Services

The growing demand for hospital services and the pressure to incorporate sustainable strategies into hospital management have led hospitals to rethink their business model and seek new ways to manage their operations. Corporate sustainability is an important way to make hospitals more sustainable and competitive. Therefore, this paper proposes a framework that contains the drivers for the management of sustainability in hospitals (SH), developed through the content analysis method. As a result, this study proposes five drivers: toward the circular economy; making sustainable buildings; adopting knowledge management and organizational culture; employing management systems, tools, and methods; and applying technological innovations. This framework contributes in a managerial way to helping managers of hospitals in managing sustainability; making their businesses fairer, greener, and more prosperous; and fulfilling their commitments to the well-being of their employees and society, providing a basis for moving toward the premises of the United Nation’s 2030 Agenda. This study also scientifically contributes to the academic maturation of the topic by systematizing elements and adding insights to the state of the art on SH. It is recommended that future studies add new elements to the drivers or even propose new drivers for the continuous scientific advancement of this topic.
Response of Dry and Floating Saline Ice to Cyclic Compression

Laboratory experiments on saline ice are often performed on cold, isothermal and dry specimens out of convenience versus working with warm specimens or specimens floating in water. The laboratory conditions, thus, usually involve non‐natural conditions. This study compares cyclic loading experiments covering the main range of ocean wave periods performed on both dry, isothermal and warm, floating ice specimens. Results indicate that −2.5°C isothermal dry specimens have higher moduli than floating specimens with an average temperature of −2.5°C with a naturally occurring temperature gradient. Moreover, the dislocation density estimated using a physics‐based model and the strain energy density dissipated in 10−3–10−2 Hz loading‐unloading cycles are much lower for the −2.5°C dry specimens than for the −2.5°C floating specimens. Although the precise reason for the dislocation density difference requires further study, the results nonetheless contribute to the understanding and implementation of ice rheology and related geophysical modeling.
Collective Nouns and Agreement Preferences in Tunisian Arabic

This paper addresses the ability of collective nouns to license plural subject-verb agreement in Tunisian Arabic. One of the defining characteristics of collective nouns is that even when they are morphologically singular, they can trigger both singular and plural agreement with the verb in some languages, including English, as well as varieties of languages, such as Tunisian Arabic. This paper is based on a preliminary corpus study in which I concluded that collective nouns in Tunisian Arabic can be categorized into two main groups: nouns that only trigger singular agreement and nouns that allow both singular and plural agreement. I applied these results to design a language questionnaire for Tunisian Arabic native speakers to investigate their acceptability of the use of plural agreement with Tunisian Arabic collective nouns. The results of the study show that participants accepted the use of plural concord with all of the nouns belonging to the two groups. I conclude that the nouns used in this questionnaire can trigger plural concord regardless of the initial categorization that I established.
Individual and environmental determinants of serum ferritin levels: A structural equation model

Serum ferritin levels are increasingly being used to assess iron stores. Considerable variation in ferritin levels within and between individuals has been observed, but our current understanding of factors that explain this variation is far from complete. We aim to combine multiple potential determinants in an integrative model, and investigate their relative importance and potential interactions.
Spectroscopic Data for the Rapid Assessment of Microbiological Quality of Chicken Burgers

The rapid assessment of the microbiological quality of highly perishable food commodities is of great importance. Spectroscopic data coupled with machine learning methods have been investigated intensively in recent years, because of their rapid, non-destructive, eco-friendly qualities and their potential to be used on-, in- or at-line. In the present study, the microbiological quality of chicken burgers was evaluated using Fourier transform infrared (FTIR) spectroscopy and multispectral imaging (MSI) in tandem with machine learning algorithms. Six independent batches were purchased from a food industry and stored at 0, 4, and 8 °C. At regular time intervals (specifically every 24 h), duplicate samples were subjected to microbiological analysis, FTIR measurements, and MSI sampling. The samples (n = 274) acquired during the data collection were classified into three microbiological quality groups: “satisfactory”: 4–7 log CFU/g, “acceptable”: 7–8 log CFU/g, and “unacceptable”: >8 logCFU/g. Subsequently, classification models were trained and tested (external validation) with several machine learning approaches, namely partial least squares discriminant analysis (PLSDA), support vector machine (SVM), random forest (RF), logistic regression (LR), and ordinal logistic regression (OLR). Accuracy scores were attained for the external validation, exhibiting FTIR data values in the range of 79.41–89.71%, and, for the MSI data, in the range of 74.63–85.07%. The performance of the models showed merit in terms of the microbiological quality assessment of chicken burgers.
Rejuvenation of Kajoetangan Urban Heritage Tourism area becomes an icon of Beautiful Malang destinations

Kampoeng Heritage Kajoetangan is one of the thematic villages in Malang City. Antiquity and historical value are the identities of this village. There are still many problems encountered through the development, there are uneven tourist spots on Dorowati Street from the observations made. Thus, it gives rise to the impression of a dualism of proper and inappropriate appearance as a tourism village. Through a service grant, the team provided a solution in the form of rejuvenating Kampoeng Heritage Kajoetangan through the manufacture of ethnic signposts and information boards for the location of standing points, location markers, and the cable installation above the Sukun River which in the process synergizes with POKDARWIS and the surrounding community to successful rejuvenation process. The results of the rejuvenation process of the Kampoeng Heritage Kajoetangan area have been carried out well with high contribution and synergy between the team, the community, and POKDARWIS in assisting the implementation of the activities in the installation of 9-point ethnic directions information boards and installation fireplaces above the Sukun River. The team hoped with rejuvenation could increase heritage village to attract more tourists after the pandemic and, in the long term, can provide a multiplier effect for the community around the heritage village.
CEO Sociopolitical Activism as a Signal of Authentic Leadership to Prospective Employees

Despite evidence on the increasing centrality of moral approaches to leadership for extant employees, management research provides little guidance on whether and how prospective employees come to draw conclusions about such leadership in their employer choice. Therefore, this paper integrates authentic leadership into signaling theory to identify CEO sociopolitical activism—a public and costly expression of personal political values by a company's highest and most visible leader—as an effective signal that is interpreted by job seekers to evaluate the CEOs’ degree of authentic leadership. Three experiments, including a parallel design for causal mediation inferences, and a field survey support that authentic leadership attributions mediate the positive impact of CEOs’ activism on job seekers’ employer attractiveness evaluations and employer choice. This mediation is attenuated when the activist CEO's espoused political values are incongruent with those of the job seeker and when the CEO engages in activism due to customer pressure rather than personal convictions. These findings primarily contribute to signaling theory and the literature on authentic leadership. For practitioners, the paper identifies a unique leadership signal that can contribute to an employer brand while cautioning about the costs this signal might impose on companies’ diversity.
Dialogic communication management theory and engagement with investors

Considering the recent corporate scandals faced by the South African capital market, stakeholders are understandably more sceptical about the accuracy and transparency of information being communicated to them. An integral stakeholder group which forms part of the success of an organisation is its investors. Since investors have increasing demands and specific information needs, it is essential that organisations communicate relevant and useful information by means of investor relations. However, despite its importance, academic research in the field of investor relations, specifically in terms of communication, is lacking and does not correlate with the importance of the function in corporate practice. The aim of this study was to critically evaluate the current IR practices of JSE listed organisations; to determine whether these aforementioned organisations participate in dialogic engagement with investors. This was done by investigating investor relations theory within the broader context of dialogic theory. The research design employed in this study was an interpretive multiple case study qualitative inquiry. The findings are the culmination and outcome of a synthesis of an in-depth literature review, a content analysis of communicative products- and semi-structured interviews with the investor relations officers of the case organisations.
GATA3 Exerts Distinct Transcriptional Functions to Regulate Radiation Resistance in A549 and H1299 Cells

Background Radiation resistance of lung cancer cells is a vital factor affecting the curative effect of lung cancer. Transcription factor GATA3 is involved in cell proliferation, invasion, and migration and is significantly expressed in a variety of malignancies. However, the molecular mechanism governing GATA3 regulation in lung cancer cells' radiation resistance is unknown. Methods Radiation-resistant cell models (A549-RR and H1299-RR) were made using fractionated high-dose irradiation. Use clone formation, CCK-8, F-actin staining, cell cycle detection, and other experiments to verify whether the model is successfully constructed. Cells were transiently transfected with knockdown or overexpression plasmid. To explore the relationship between GATA3/H3K4me3 and target genes, we used ChIP-qPCR, ChIP-seq, and dual luciferase reporter gene experiments. Xenograft tumor models were used to evaluate the effect of GATA3 depletion on the tumorigenic behavior of lung cancer cells. Results We report that transcription factors GATA3 and H3K4me3 coactivate NRP1 gene transcription when A549 cells develop radiation resistance. However, the mechanism of radiation resistance in H1299 cells is that GATA3 acts as a transcription inhibitor. The decrease of GATA3 will promote the increase of NRP1 transcription, in which H3K4me3 does not play a leading role. Conclusions GATA3, an upstream transcriptional regulator of NRP1 gene, regulates the radioresistance of A549 and H1299 cells by opposite mechanisms, which provides a new target for radiotherapy of lung cancer.
Osteoporosis Preclinical Research: A Systematic Review on Comparative Studies Using Ovariectomized Sheep

Sheep ovariectomy (OVX) alone or associated to steroid therapy, deficient diet, or hypothalamic–pituitary disconnection has proven to be of critical importance for osteoporosis research in orthopedics. However, the impact of specific variables, such as breed, age, diet, time after OVX, and other variables, should be monitored. Thus, the design of comparative studies is mandatory to minimize the impact of these variables or to recognize the presence of unwanted variables as well as to better characterize bone remodeling in this model. Herein, we conducted a systematic review of the last 10 years on PubMed, Scopus, and Web of Knowledge considering only studies on OVX sheep where a control group was present. Of the 123 records screened, 18 studies were included and analyzed. Results showed that (i) Merino sheep are the most exploited breed; (ii) 5–6 years of age is the most used time for inducing OVX; (iii) ventral midline laparotomy is the most common approach to induce OVX; (iv) OVX associated to steroid therapy is the most widely used osteoporosis model; and (v) success of OVX was mostly verified 12 months after surgery. In detail, starting from 12 months after OVX a significant decline in bone mineral density and in microarchitectural bone parameters as well as in biochemical markers were detected in all studies in comparison to control groups. Bone alteration was also site-specific on a pattern as follows: lumbar vertebra, femoral neck, and ribs. Before 12 months from OVX and starting from 3–5 months, microarchitectural bone changes and biochemical marker alterations were present when osteoporosis was induced by OVX associated to steroid therapy. In conclusion, OVX in sheep influence bone metabolism causing pronounced systemic bone loss and structural deterioration comparable to the situation found in osteoporosis patients. Data for treating osteoporosis patients are based not only on good planning and study design but also on a correct animal use that, as suggested by 3Rs principles and by ARRIVE guidelines, includes the use of control groups to be directly contrasted with the experimental group.
Fractal antenna arrays for MIMO radar applications

In this contribution, fractal antenna arrays are analyzed for their applicability in multiple-input multiple-output (MIMO) radars. Array geometries based on the Fudgeflake fractal and the Gosper island fractal are investigated. In addition, a concept for the combination of both fractals is shown in order to increase the flexibility concerning the number of transmitting and receiving antennas. The presented fractal MIMO concepts can be utilized in order to improve the angular resolution and to reduce the sidelobe level for a given number of transmitting and receiving antennas. It is shown that a fractal MIMO concept with 21 transmitting antennas and 21 receiving antennas improves the angular resolution to 4.6 degrees and reduces side lobe level by 3.1 dB compared to a MIMO configuration based on two linear arrays with the same number of antenna elements. In addition, the results are experimentally validated by broadband radar measurements.
The Double Mediating Effect of Family Support and Family Relationship Satisfaction on Self-Compassion and Meaning in Life among Korean Baby Boomers

This study identified the relationship between self-compassion and meaning in life among Korean baby boomers and examined the double mediating effect of family support and family relationship satisfaction on this relationship. For this purpose, data were collected from 400 baby boomers (born between 1955–1963) using the self-compassion, meaning in life, family support, and family relationship satisfaction scales. PROCESS Macro 3.5 Model 6 was used to analyze the double mediating effects. The results revealed that first, there was a significant correlation between the self-compassion, meaning in life, family support, and family relationship satisfaction of this study. Second, in the relationship between self-compassion and the meaning in life, family support, and family relationship satisfaction were found to have a partial mediating effect and a double mediating effect. The implications and limitations of these findings are also discussed.
Vasospasm-Related Death after Aneurysmal Subarachnoid Hemorrhage: A Retrospective Case–Control Study

Background: Vasospasm after the rupture of an intracranial aneurysm is a frequent phenomenon and is the main cause of morbidity and mortality in patients who have survived intracranial hemorrhage and aneurysm treatment. We analyzed the diagnosis and management of patients with aneurysmal subarachnoid hemorrhage who eventually died from ischemic brain damage due to vasospasm. Methods: Between January 2007 and December 2021 (15 years), a total of 1064 patients were diagnosed with an aneurysmal intracranial hemorrhage in a single comprehensive neurovascular center. Vasospasm was diagnosed in 408 patients (38.4%). A total of 187 patients (17.6%) died within 90 days of the aneurysm rupture. In 64 of these 187 patients (33.7%), vasospasm was considered to be the cause of death. In a retrospective analysis, demographic and clinical data for patients without, with non-fatal, and with fatal vasospasm were compared. The patients with fatal vasospasm were categorized into the following subgroups: “no diagnosis and treatment” (Group a), “delayed diagnosis” (Group b), “cardiovascular complications” (Group c), and “vasospasm-treatment complications” (Group d). Results: Among the patients with fatal vasospasm, 31 (48.4%) were assigned to group a, 26 (40.6%) to group b, seven (10.9%) to group c, and none (0%) to group d. Conclusion: The early recognition of severe posthemorrhagic vasospasm is a prerequisite for any treatment and requires routine diagnostic imaging in all unconscious patients. Aggressive endovascular vasospasm treatment may fail to prevent death but is infrequently the cause of a fatal outcome.
Revealing Impacts of Cyber Attacks on Power Grids Vulnerability to Cascading Failures

Cascading failures in power grids are typically triggered by initiating contingencies (ICs). Traditional assumption is that those multiple-component ICs have low chances of occurring. However, considering the increasing cyber events in power grids, this brief reveals that smart attackers can target at critical ICs and implement well-designed cyber attacks to highly increase the ICs’ occurrence probabilities by overloading key branches in the grid. This will greatly increase the grid vulnerability to cascading failures. In this brief, such issue is revealed and analyzed using a two-step approach, which consists of a high-probability IC screening and a deterministic cascading testing. The simulation results on the IEEE 118-bus systems verify the effectiveness of the proposed approach and highlight the increased risk imposed by cyber-attacks.