Miracle-dz/UniFAR-FTUs huggingface dataset:
Contribution of natural resource exploitation of stone, impact on livelihood and rural development in West Region of Cameroon.

Purpose: Stone as a natural resource has always been highly recognized as an income generating activity worldwide. The study on the contribution of natural resource exploitation of stone, impact on livelihood and rural development was conducted in the West Region of Cameroon with the used of purposive random sampling technique. Methodology: The target population for this study were the inhabitants around the quarries involved in the mining and the farmers’ activities. From the number of workers, the researchers chose a sample size of 400 miners assuming that the miners in the West region are more than 100000 distributed within four divisions. The study used both primary and secondary data sources. The methods used for the study were interviews, focus group discussions sources, documents analysis and participatory observations. SPSS version 22 and Microsoft Excel were used to analyse data. Finding: Results indicated that 41.61% were artisanal miners while 31.88% were industrial miners. More so, results further revealed that 76.66% were quarry operators and 33.34% were farmers. Unique contribution to theory and practice: The study therefore recommends that the state through the local authorities such as the council could improve on the livelihood of these inhabitants by assisting and respecting their limit areas of stone exploitation, also compensate the villagers whose lands are being exploited especially moderately, upon what they request as terms of compensation not what they offer to them as gift.
Data-Independent Acquisition Enables Robust Quantification of 400 Proteins in Non-Depleted Canine Plasma

Mass spectrometry-based plasma proteomics offers a major advance for biomarker discovery in the veterinary field, which has traditionally been limited to quantification of a small number of proteins using biochemical assays. The development of foundational data and tools related to sequential window acquisition of all theoretical mass spectra (SWATH)-mass spectrometry has allowed for quantitative profiling of a significant number of plasma proteins in humans and several animal species. Enabling SWATH in dogs enhances human biomedical research as a model species, and significantly improves diagnostic and disease monitoring capability. In this study, a comprehensive peptide spectral library specific to canine plasma proteome was developed and evaluated using SWATH for protein quantification in non-depleted dog plasma. Specifically, plasma samples were subjected to various orthogonal fractionation and digestion techniques, and peptide fragmentation data corresponding to over 420 proteins was collected. Subsequently, a SWATH-based assay was introduced that leveraged the developed resource and that enabled reproducible quantification of 400 proteins in non-depleted plasma samples corresponding to various disease conditions. The ability to profile the abundance of such a significant number of plasma proteins using a single method in dogs has the potential to accelerate biomarker discovery studies in this species.
Experimental Investigation of the Effect of Purge Flow on Film Cooling Effectiveness on a Rotating Turbine With Non-Axisymmetric Endwall Contouring

The impact of the purge flow injection on aerodynamics and film cooling effectiveness of a three-stage high pressure turbine with non-axisymmetric endwall contouring has been experimentally investigated. As a continuation of the previously published work involving stator-rotor gap purge cooling, this study investigates film cooling effectiveness on the first stage rotor contoured platform due to a coolant gas injection. Film cooling effectiveness measurements are performed on the rotor blade platform using a pressure sensitive paint (PSP) technique. The present study examines, in particular, the film cooling effectiveness due to injection of coolant from the rotor cavity through the circumferential gap between the first stator followed by the first rotor. Efficiency and performance experiments were conducted with and without cooling injection to show (a) the impact of endwall contouring on the turbine efficiency and (b) the impact of film cooling injection in association with the endwall contouring.The experimental investigation is carried out in a three-stage turbine facility at the Turbomachinery Performance and Flow Research Laboratory (TPFL) at Texas A&M University. Its rotor includes non-axisymmetric endwall contouring on the first and second rotor row [1]. The turbine has two independent cooling loops. Film cooling effectiveness measurements are performed for three coolant-to-mainstream mass flow ratios of 0.5%, 1.0% and 1.5%. Film cooling data is also obtained for three rotational speeds, 3000 rpm (reference condition), 2550 rpm and 2400 rpm and compared with non-contoured endwall data.Copyright © 2013 by ASME
Research on the Impact of the Work Motivation of Chinese Skilled Personnel on Work Engagement: An Analysis Based on the Perspective of Policy Identification

Skilled personnel are playing an increasingly important role in organizations. Considering that skilled personnel tend to be influenced by different types of motivations, and there is a certain relationship between their work motivation and work engagement. Based on this, the purpose of this paper is to research the relationship between work motivation of Chinese skilled personnel and work engagement from the perspective of policy identification. A quantitative analysis of the questionnaire method was adopted to address the research questions, and SPSS was used to analysis of the obtained data. Given the results have shown firstly work motivation of Chinese skilled personnel positively associates work engagement, and secondly policy identification and work engagement of Chinese skilled personnel are positively related. However, there was no indication that policy identification of Chinese skilled personnel plays a moderating role in the process of work motivation effects on work engagement. The contributions are mainly are twofold. Firstly, this paper contributes to the extending and linking of two separate literature (work motivation and work engagement, and policy identification). Secondly, focusing on Skilled personnel is innovative and can yield important insights into complex managerial problems.
Evolutionary Genetics of Cacti: Research Biases, Advances and Prospects

Here, we present a review of the studies of evolutionary genetics (phylogenetics, population genetics, and phylogeography) using genetic data as well as genome scale assemblies in Cactaceae (Caryophyllales, Angiosperms), a major lineage of succulent plants with astonishing diversity on the American continent. To this end, we performed a literature survey (1992–2021) to obtain detailed information regarding key aspects of studies investigating cactus evolution. Specifically, we summarize the advances in the following aspects: molecular markers, species delimitation, phylogenetics, hybridization, biogeography, and genome assemblies. In brief, we observed substantial growth in the studies conducted with molecular markers in the past two decades. However, we found biases in taxonomic/geographic sampling and the use of traditional markers and statistical approaches. We discuss some methodological and social challenges for engaging the cactus community in genomic research. We also stressed the importance of integrative approaches, coalescent methods, and international collaboration to advance the understanding of cactus evolution.
Efficacy and safety testing of mycotoxin-detoxifying agents in broilers following the EFSA guidelines

Mycotoxin-detoxifying agents are added to the feed to reduce mycotoxicoses in poultry. A lot of feed additives are on the market, but only few trials were performed to study their in vivo efficacy. In 2009 the European Commission introduced a new functional group within the existing category of technological additives:'substances for reduction of the contamination of feed by mycotoxins'. This additional group can be divided in two groups, namely adsorbing and biotransforming agents. We performed an in vivo experiment according the recent guidelines of the European Food Safety Authority (EFSA, 2010). Forty-eight 1-d-old broiler chicks were randomly assigned to 1 of 8 dietary treatment groups after one week of acclimatization. The table below illustrates the different diets for the groups: During this study, zootechnical parameters, such as feed intake and weight gain were measured. No adverse effects in the broilers were noted by inclusion of DON with or without the detoxifying agents in the diets, compared to control diet. As reported by EFSA these parameters can not be used solely for demonstration of efficacy of mycotoxin-detoxifying agents. Following EFSA guidelines the most relevant endpoint for testing additives against DON is measuring DON and its metabolites in blood serum. Blood samples were taken after 7, 14 and 21 days of feeding. The levels of DON and its metabolites in plasma and tissues were determined by a validated LC-MS/MS method (De Baere et al., 2011). No DON or metabolites were detected in the plasma of group 2, 3 or 4. For the animals of groups 6, 7 and 8, DON, DOM-1 and 3-ADON were detected and the concentrations decreased with time. After three weeks of feeding no groups showed levels above the limit of detection. These results suggest that in vivo trials for testing detoxifying agents against DON in broilers have some limitations when plasma concentrations are used as endpoint. Feeding concentrations of DON below the maximum authorized level of 5000 µg/kg results in DON levels below the limit of detection, resulting in no assessment of the efficacy of mycotoxin-detoxifying agents. The European Commission also asks to take the presence of possible interactions with veterinary medicinal products into account. An extra trial was therefore performed including three groups of broilers: blank feed, blank feed with an adsorbing agent and blank feed supplemented with a biotransforming agent. The antibiotics oxytetracycline (100 mg/kg B.W.) and amoxicillin (20 mg/kg B.W.) were given to the animals by an oral bolus after 4 weeks of feeding. A kinetic study was performed and the concentrations of both antibiotics in plasma were determined by a validated LC-MS/MS method. The results will be presented at the conference. Acknowledgements: The authors would like to thank L. Goethals, V. Hautekiet and SANLUC International NV for their financial support. The assistance of J. Lambrecht and A. Van den Bussche is gratefully appreciated.
Influence of commutation on six-phase rectifier system with tap-changer

The commutation process of six-phase rectifier system with tap-changer is very important to the suppression of current distortion. The mathematical model with the influence of commutation is presented via piecewise analytical method, and AC current waveforms which agree with experiments very well are provided. Furthermore, a Fourier series expansion of the AC current is achieved. On the basis of experiments, the regularity and influential factors of total current harmonic distortion (THD) are worked out. It also has been verified that the line-voltage harmonic distortion(VHD) on AC-side and the voltage ripple factor(K) on DC-side are reduced in the six-phase rectifier system with tap-changer. Finally, the engineering practical optimum turn ratio of the tap-changer Interphase reactor is obtained. The results provide a most important guidance.
Stereoselective Promiscuous Reactions Catalyzed by Lipases

The ability of lipases to display activity beyond their physiological reactions, so-called “catalytic promiscuity”, has gained increasing interest in the last two decades as an important tool for expanding the application of these enzymes in organic synthesis. Some lipases have been shown to be effective in catalyzing a variety of C-C bond formation reactions and most of the investigations have been directed to the optimization of the products yield through a careful tuning of the experimental parameters. Despite the fact that new stereogenic carbons are formed in many of the tested reactions, the target products have been often obtained in racemic form and examples of an efficient asymmetric induction by the used lipases are quite limited. The aim of this review, mainly focused on those lipase-catalyzed promiscuous reactions in which optically active products have been obtained, is to offer a current state of art together with a perspective in this field of asymmetric synthesis.
Zirconia Crowns for Primary Teeth: A Systematic Review and Meta-Analyses

Objective: The aim of this systematic review was to summarize the literature regarding the clinical performance of zirconia crowns for primary teeth. Materials and Methods: Four electronic databases, Ovid, PubMed, Scopus, and Web of Science were searched. Clinical, observational, and laboratory studies were included. Studies that assessed the performance of zirconia crowns for primary teeth using outcomes such as gingival and periodontal health, parental satisfaction, color stability, crown retention, contour, fracture resistance, marginal integrity, surface roughness, and recurrent caries were included. Risk of bias was assessed using different assessment tools depending on the type of the assessed study. Results: Out of the 2400 retrieved records, 73 full-text records were assessed for eligibility. Thirty-six studies were included for qualitative analysis. The included studies reported that zirconia crowns for primary teeth were associated with better gingival and periodontal health, good retention, high fracture resistance, color stability, high parental acceptance, good marginal adaptation, smooth cosmetic surface, and no recurrent caries. Conclusion: Zirconia crowns are promising alternative to other restorative materials and crowns in the field of pediatric dentistry. They showed higher properties and performance in different clinical aspects and great parental satisfaction.
Collective Leadership: Developing a Tool to Assess Educator Readiness and Efficacy

Collective leadership is increasingly important because collective teacher efficacy, a subset of this type of leadership, is a significant factor in student learning. The purpose of this study is to provide evidence for the structural validity of a collective leadership instrument across public and private school settings using the multigroup factor analysis invariance framework for categorical indicators. The results supported invariance in factor structure, loadings, intercepts, and residual (co)variances and latent variances and covariances equality. Collective leadership development is theorized to play a central role in the effectiveness of both public and private schools alike so any instrument used to make decisions about collective leadership should be reflective of the pertinent constructs in general rather than the data being an artifact of the particular setting.
Incidence of Intrapartum-Related Events at the Largest Obstetric Hospital in Hanoi, Vietnam: A Retrospective Study

Every year, 2.4 million neonates die during their first month of life and even more suffer permanent injury. The main causes are intrapartum-related events, prematurity, and infection, with sub-Saharan Africa and southern Asia being the worst affected regions. With a focus on intrapartum-related events, we aimed to assess the neonatal demographic characteristics, clinical management, and outcomes among neonates born at the largest obstetric hospital in Hanoi, Vietnam. This was a retrospective cross-sectional study that included all the inborn neonates in November 2019, which was selected as a representative month. A total of 4554 neonates were born during the study period. Of these, 1.0% (n = 44) were stillbirths, 0.15% (n = 7) died in hospital, 0.61% (n = 28) received positive pressure ventilation at birth, and 0.15% (n = 7) were diagnosed with hypoxic ischemic encephalopathy. A total of 581 (13%) neonates were admitted to the neonatal unit, among which the most common diagnoses were prematurity (37%, n = 217) and infection (15%, n = 89). Except for the intrapartum-related events, our findings are consistent with the previously documented data on neonatal morbidity. The intrapartum-related events, however, were surprisingly low in number even in comparison to high-income countries. Research on the current clinical practice at Phu San Hanoi Hospital may bring further clarity to identify the success factors.
AUDITORY EFFECTS OF PERSONAL MUSIC SYSTEMS IN YOUNG ADULTS: A QUESTIONNAIRE BASED STUDY

Background: Noise exposure damages cochlear hair cells resulting in sensorineural hearing loss along with other symptoms like tinnitus and vertigo. One source of loud sound exposure in young adults is personal music systems (PMS). The present study investigated the auditoryrelated symptoms in regular PMS users by administering a questionnaire on PMS usage and associated symptoms in individuals who were regular users of PMS and compared results with non-regular PMS users. Material and methods: There were 260 young adults who participated in the study. Individuals who used PMS for ≥1 hour per day at a volume control setting of ≥60% for ≥2 years were considered regular PMS users, while other participants were considered non-regular PMS users. A custom-made questionnaire with a total of 24 questions was administered to all participants. Results: Statistical analysis indicated that the occurrence of symptoms such as reduced hearing and vertigo were significantly higher in regular PMS users than in non-regular users. However, other symptoms such as tinnitus, difficulty in perception of speech in noisy situations, ear pain, and headache were not significantly different between the groups. Conclusions: The findings substantiate the harmful effects of regular PMS usage on hearing and related functions. They also document the incidence of associated symptoms.
The relationship between instructional scaffolding strategies and maintained situational interest

ABSTRACT Although widely used, video lectures may have negative effects on maintaining student interest. When content is presented in video lectures, information processing issues can contribute to a decrease in interest and engagement. One solution is to scaffold instruction so that information is processed efficiently, and interest is maintained. While extant research examines two known scaffolding strategies (strategic and conceptual) in isolation, the current study combines the two to see if a more complete instructional scaffolding model leads to higher levels of maintained situational interest. A group of university students studying online in South Korea (n = 2,183) were surveyed about their perceptions of the way in which scaffolding occurred in their courses, with items focusing on the presence of the following: explanatory direct instruction early in the lectures, reduction of instructional support involving worked examples in the heart of the lecture (conceptual scaffolding) and an overall separation of content in a simple to the complex manner (strategic scaffolding). The results show a positive relationship between these combined instructional scaffolding strategies and the maintained situational interest of the students. Therefore, these strategies can be used to maintain student interest and engagement with online learning materials.
New heteroligand complex of cobalt with phthalocyanine, oxo and fluoro ligands: DFT consideration

Based on the results of a quantum chemical calculation using the DFT method in the OPBE/TZVP and B3PW91/TZVP levels, the possibility of the existence of a cobalt heteroligand complex containing in the inner coordination sphere tetra[benzo]derivative of porphyrazine (phthalocyanine), oxide (O[Formula: see text] and fluoride (F[Formula: see text] ions, with possible oxidation state of Co(V) that is non-characteristic for the given 3[Formula: see text]-element, has been shown. The data on the structural parameters, multiplicity of the ground state, NBO analysis data and standard thermodynamic parameters of formation (standard enthalpy [Formula: see text], entropy [Formula: see text] and Gibbs’s energy [Formula: see text] for the indicated complex have been presented. At the same time, it has been noted that the porphyrazine itself as well as di[benzo]porphyrazine, do not form such metalcomplexes.
Design and Optimization of an Untethered High-Performance Robotic Tuna

For bioinspired underwater robots, it is a great challenge to achieve both high swimming speed and steering maneuverability. To this end, this article presents an untethered high-performance robotic tuna through mechanism optimization and steering strategies design. First, combining the advantages of single-joint and multijoint robotic fish, a novel mechanism of redundant joints is designed to enrich the swimming patterns of the robotic tuna. Next, a three-dimensional dynamic model is established, and the model parameters are accurately identified by experimental data. With the aid of the model and experiments, the speed performance is optimized under the key parameters of tail fin, such as size and flexibility. Further, from the perspective of imitating tuna and the demand of actual operations, two steering strategies are proposed to improve the steering performance. Finally, extensive simulation and experiments verify the effectiveness of the proposed methods. The obtained results reveal that the untethered robotic tuna can achieve both high swimming speed with 2.26 m/s (equivalent to 3.13 body lengths per second) and outstanding steering maneuverability with 0.48 body lengths in turning radius, providing valuable insight into performing special missions in cluttered ocean environments.
Attitude about Coenzyme Q10 Supplements among Cardiac Patients

Background: This study aimed to assess attitude of cardiac patients about Coenzyme Q10 supplements. Methods: A cross-sectional study using convenience sampling based on inclusion and exclusion criteria was conducted among cardiac patients. This study was conducted using a self-administered questionnaire, derived from extensive literature reviews. Results: Study subjects were found to have average attitude (n= 87, 64.9%) towards Coenzyme Q10 supplementations. This study found strong positive correlation between the knowledge score and attitude score (r=0.776, p<0.05). It was found that 7 (46.67%) of study subjects who consumed the Coenzyme Q10 supplements were recommended by friends and family. Conclusion: The attitude towards Coenzyme Q10 supplements reflected the low pattern of use, and emphasized the role of healthcare providers to increase awareness about the benefits of Coenzyme Q10 supplements among cardiac patients as well as to educate them about its interaction with some drugs.