Miracle-dz/UniFAR-FTUs huggingface dataset:
N2O5 hydrolysis on sub-micron organic aerosols: the effect of relative humidity, particle phase, and particle size

Measurements of the reactive uptake coefficient for N2O5 hydrolysis, γm, on sub-micron organic aerosols were performed in an entrained aerosol flow tube as a function of relative humidity (RH), aerosol phase, N2O5 partial pressure, and mean aerosol size. Aerosol phase and relative humidity were determined simultaneously, and chemical ionization mass spectrometry was used to detect the decay rate of N2O5 in the presence of malonic acid or azelaic acid aerosol. The γm on solid malonic acid was determined to be less than 0.001 (RH = 10–50%), and on solid azelaic acid, γm was 0.0005 ± 0.0003. Aqueous malonic acid aerosol yielded γm = 0.0020 ± 0.0005 at 10% RH and increased with RH to ∼0.03 at RH = 50–70%. We report the first evidence of an inverse dependence of the γm on the initial partial pressure of N2O5 in the flow reactor, and a dependence on particle size for aerosol with surface area-weighted radii less than ∼100 nm at 50% RH. We find that the super-saturated malonic acid aerosol results are consistent with N2O5 hydrolysis being both aerosol volume-limited where, for RH < 50%, water is the limiting reagent, and also with a surface-specific process.
Metaphor as Creativity in Audio Descriptive Tours for Art Museums

In a previous corpus-based descriptive study, we concluded that a linguistic metaphor is a frequently used technique in audio description (AD) for art museums and proposed a set of categories to describe this resource. These results led us to compose increasingly creative and subjective ADs for a series of audio descriptive guided tours of art exhibitions carried out within the Words to See accessibility project. In the present study, the same categories are applied to the analysis of the ADs created for these guided tours. In these ADs, metaphors are used to describe both representational and abstract art, while some categories of deliberate metaphor are more frequently used to describe abstract works. These results are discussed in relation to our and other authors’ studies in this field, as well as to theories of art education and gallery teaching.
Positive Family Intervention for Families of Children with Fragile X Syndrome: Using Telehealth to Reduce Problem Behavior and Improve Maternal Mental Health Author(s): Carmen Ann Kemper Mootz

POSITIVE FAMILY INTERVENTION FOR FAMILIES OF CHILDREN WITH FRAGILE X SYNDROME: USING TELEHEALTH TO REDUCE PROBLEM BEHAVIOR AND IMPROVE MATERNAL MENTAL HEALTH Carmen Ann Kemper Mootz The present study was designed to evaluate the effectiveness of Positive Family Intervention (PFI), delivered via teletherapy, for a family of a child diagnosed with Fragile X syndrome (FXS). PFI combines elements of cognitive-behavioral therapy (CBT) and positive-behavior support (PBS). A single-subject AB design was used across one participant to evaluate changes in observed problem behavior. Following nine weeks of baseline data collection, the participating mother was administered PFI via WebEx for eight 90-minute sessions, once per week. After the treatment was complete, three weeks of post-treatment follow-up data on problem behavior were collected from videorecordings. The participant uploaded naturalistic videos of her child’s problem behavior in a specific setting to a secure online server. The effect of PFI on parental depression, stress, and cognitions was also evaluated using preand posttreatment data collection. Results indicated a substantial decrease in both observed and parent-reported problem behavior over the course of the treatment. Non-significant decreases were reported in parental depression and stress. Small to medium changes in parental attribution of child problem behavior were also reported following treatment. The implications of these changes are discussed, as well as the limitations of the present study and directions for
Work, Life, and Identity Negotiation in a Foreign Land: A Study of Taiwanese Working Holiday Makers in Belgium

This study examined the living and working experiences of 14 Taiwanese working holiday makers (WHMs) in Belgium as they negotiate their identity and social lives while they live overseas, using both participant observation and semistructured interviews. The study demonstrates that the low salary level and high work pressure in Taiwan are two of the major factors pushing these young Taiwanese to leave their homeland and work overseas. However, the majority of these Taiwanese WHMs face difficulties in speaking Belgium’s local languages, and their opportunities for work are further limited by the temporary visa regulations. Workplaces run by mainland Chinese, especially in the hospitality industry, have become vital places for Taiwanese WHMs to negotiate their ethnonational identity. Although they only have limited social lives and networks in the host society, they claim that they have developed intercultural competences and a greater openmindedness by living in the multicultural and international environments of Brussels or other Belgian cities.
ANALYSIS OF THE RELATIONSHIP BETWEEN MACROECONOMIC VARIABLES and BIST-30 STOCK RETURNS

E44, G10, N20 In addition to the fundamental macroeconomic indicators such as inflation and interest rate which are very important for foreign investors, the Credit Default Swap (CDS), that shows the credit risk level of the country, is an important research topic. Therefore, in this study, it is aimed to examine the effects of Turkey CDS and selected macroeconomic variables on the Istanbul Stock Exchange (ISE) 30 index (XU30). For this purpose, Granger Causality Relations, Impulse-Response Charts and Variance decomposition were made under the VAR model for 2010: 06 and 2020: 02 monthly periods. According to the results of the study, it was concluded that there was no Granger Causality relationship from variables to XU30 and XU30 stock returns toward selected macroeconomic indices either. However, it is found that shocks in CDS for two and a half months were responded negatively by XU30 returns at the significant beginning. Also, the positive and significant impact of the interest rate is worth to consider.
The conduct of Dentistry undergraduate students with regard to the use and conservation of diamond burs for clinical practices

The objective of this study was to examine the conduct of Dentistry undergraduate students regarding the use of diamond burs, as well as the conditions of the burs themselves. Questionnaires were applied to the 98 students regularly enrolled in the clinical subjects of the course (from the 7th to the 10th semesters) to evaluate the characteristics with regards to use, storing, sterilization, and conditions of the diamond burs used in clinical practice. The diamond burs were collected for analysis in an electron microscope (EM), where aspects related to their state of conservation were observed. Frequency calculations were carried out for the statistical analysis. It was found that 44.9% of the students stored the burs in isolation for sterilization; 27.6% used the same instrument for a period that varied from 1 to 2 years before discarding it; and 87.8% used the same instrument once or twice a week; 66.3% stated they did not use in clinic the same instruments used in lab activities; 73.5% used water, soap, and a brush to clean the bur, and 45.9% used gloves, cap, mask, and lab coats for this procedure; 51% used the air syringe to dry the bur; 39.8% did not disinfect them; 100% used autoclave; 87.8% reported good usage conditions; 59.2% had exchanged their instruments; and 81.6% agreed to use their own instruments in their oral cavity. The images from the EM show the structural loss of diamonds, the oxidation process of the bonding metal, and even the severe loss of the active part of the diamond tips. The students presented an adequate behavior regarding the storing, using, and sterilizing of the diamond burs. However, an analysis using the EM showed that the burs were not well preserved. Descriptors: Dentistry Instruments. Dentistry Teaching. Sterilization. Scanning Electron Microscope. The conduct of dentistry undergraduate students with regard to the use of diamond burs Revista da ABENO • 20(2):64-73, 2020 – DOI: 10.30979/rev.abeno. v20i2.929 65
Cardiac Related Deaths among Homeless with Covid-19: Case Presentations

Background: Homeless individuals and families living inor around homeless shelters who are diagnosed with Cardiovascular Disease (CVD) and COVID-19 have an increased risk for severe illness and even death. Local problem: Homeless and underserved populations in South Florida are faced with medically complex needs that are partially met by onsite clinics. Unfortunately, the COVID-19 pandemic has further limited access to onsite clinic and hospital outpatient services, adversely impact quality of life, resulting in a cost burden to the healthcare system. Methods: The shelter and clinic staff implemented a rapid 6-step process to reduce the spread of COVID-19 among persons living at the shelter which included in-service training and education on COVID-19, physical spacing, symptom identifi cation, quarantining positive cases for 14-days, cleaning and disinfecting common areas, and partnering with local health departments. Results: Descriptive statistics were used to examine the data. Findings showed that 372 SARS-CoV-2 tests were performed on sheltered and unsheltered homeless persons living inor around the homeless shelter and onsite clinic. Of the 372 tests performed in 294 individuals, 54 (15%) sheltered and unsheltered persons tested positive (the 54 includes two retest) and 242 (62%) tested negative. Of the 52 homeless persons who tested positive for SARS-CoV-2, 4 (1%) died, 2 (< 1%) were re-infected with COVID-19, two patients are currently hospitalized at the writing of this article, and 108 persons were placed in quarantine, which included persons exposed during contact tracing. Conclusions: Homelessness increases the prevalence of SARS-CoV-2 transmission, especially in patients with CVD, but varies among shelter character based upon agency policies. Early detection of SARS CoV-2 is essential among homeless populations to identify clusters, decrease viral transmission, increase early treatment and access to health care services, and to protect staff members and workers from exposure.
Evaluation of Reduced-Dose Decitabine and Azacitidine for Treating Myelodysplastic Syndromes: A Retrospective Study

Background Hypomethylating agents (HMA) are considered the first-line therapy for high-risk myelodysplastic syndromes (MDS). However, as the efficacy and safety of rational dosing regimens are lacking, we evaluated the effectiveness and safety of reduced-dose azacitidine (AZA) vs. decitabine (DAC) in adult MDS patients. Material/Methods This retrospective study was conducted at the Institute of Hematology & Blood Diseases Hospital, for hospitalized MDS patients diagnosed (WHO 2008 classification criteria) from May 2006 to February 2020. These AZA- and DCA-naive patients treated with AZA 100 mg/(m2·day) for 5 days to 7 days or DAC 20 mg/(m2·day) for 3 days to 4 days, or 20 mg/(m2·day) 1 day/week for 3 weeks/month were assessed for treatment responses and adverse events. Results Of the 158 enrolled MDS patients, 120 and 38 patients were administered reduced-dose DAC and AZA, respectively. All the patients received a median of 2 treatment cycles. The overall response rates (ORR) were 50.0% and 73.3% in the AZA and DAC groups, respectively (P=0.007). The percentage of platelet transfusion dependence in the AZA group was lower than the DAC group (P=0.026). The multivariate analysis demonstrated that the DAC treatment was a significant factor for improved responses (OR 2.928; 95% CI 1.267–6.896; P=0.012), and the absolute neutrophil count (ANC) was a predictor of the ORR (OR 0.725; 95% CI 0.558–0.898; P=0.008). Neutropenia (P=0.016) and infection (P=0.032) incidences were higher in the DAC group. Conclusions The reduced-dose DAC group demonstrated a better response than the AZA group in MDS patients with different prognostic risks. The patients’ pre-treatment ANC was a significant factor associated with the ORR.
The Role of Trustworthiness in Achieving Customers’ Loyalty in Tourism and Hotel Sectors

Recently, many tourist companies and hotels have lost its credibility which adversely affects customer’s confidence, trust, experience, satisfaction, preference, and choice of a tourist company or hotel. Moreover, the term trustworthiness was discussed in some studies to clarify its impact on customers' attitudes and their purchasing decisions, but this is not sufficient, as this topic needs more extensive studies to fill this scientific gap. Therefore, there is an urgent need to conduct extensive studies investigating the effect of trustworthiness on customers' choices, preferences, satisfaction, and loyalty. From this perspective, the study seeks to measure the role of trustworthiness in achieving customers’ loyalty in the tourism and hotel sectors . This research reports the findings of a questionnaire from 369 customers (188 hotel customers and 181 tourist company customers). This survey consisted of 16 items based on a five-point Likert scale technique ranging from: “strongly disagree” (1); to “strongly agree” (5) was used to measure trustworthiness drivers and customer loyalty factors. Data were analyzed using SPSS. Six hypotheses were verified, and all of them were supported by hotel customers' perspectives, but regarding the perspectives of tourist companies' customers, only four of them were supported. The results reveal that all dimensions of trustworthiness have a significant impact on customers' loyalty in the hotel sector. Meanwhile, two drivers of trustworthiness (expertise and competence; and benevolence) have a significant impact on customers' loyalty in tourist companies.
In vitro Micropropagation of Citrullus colocynthis (L.) Schrad: an endangered medicinal plant

Methods: In vitro grown seedlings from decontaminated seeds were micropropagated in basal MS medium at 23±2C temperature and light intensity of 3000 Lux for 16 hours in culture room. In vitro grown nodal explants were supplemented with BAP (6-Benzylaminopurine) and NAA (Naphthalene acetic acid) with basal MS (Murashige and Skoog) medium to induce multiple shoots. Indole butyric acid (IBA; 0.1 to 2.0 mg/L) was supplemented to MS medium to develop roots of micropropagated shoots. Internodes and leaves of micropropagated shoots used to induce callus in MS medium enriched with varying concentration of 2, 4dichlorophenoxyacetic acid (2, 4 D; 0 to 2.0mg/L) and kinetin (KIN; 0 to 1.0mg/L). Shoot initiation from callus was tested by adding 2, 4-D (0.1 to 2.0 mg/L) and BAP (1.0 to 1.5 mg/L) in basal MS medium. Conditions were carefully monitored during the experiment. After hardening, the micropropagated plantlets were placed in open filed environment in pots filled with sand and peat moss (3:1).
Ammonia plasma treatment as a method promoting simultaneous hydrophilicity and antimicrobial activity of viscose wound dressings

Viscose non-woven was treated by NH3 plasma. Different exposure times were used in order to find the optimum conditions for simultaneously improved hydrophilicity and antimicrobial activity, as desired effects by wound dressings. Both chemical and morphological modifications were studied by X-ray photoelectron spectroscopy and atomic force microscopy, respectively, revealing functionalization with nitrogen groups as well as formation of rich morphology at sub-micrometer scale. The wetting rise curves increased from 0.04 g2 s–1 for non-treated material to 1 g2 s−1 after prolonged treatment. The water contact angle decreased almost linearly with treatment time from 90° for non-treated samples to about 40° for samples treated for 140 s and remained rather constant thereafter. The AATCC 100–1999 standard test revealed reduction on all used bacteria, more pronounced for Gram-negative, that is, E. coli and P. aeruginosa, then for Gram-positive, that is, a significant for S. aureus and a marginal for E. faecalis.
Myogenesis modelled by human pluripotent stem cells: a multi‐omic study of Duchenne myopathy early onset

Duchenne muscular dystrophy (DMD) causes severe disability of children and death of young men, with an incidence of approximately 1/5000 male births. Symptoms appear in early childhood, with a diagnosis made mostly around 4 years old, a time where the amount of muscle damage is already significant, preventing early therapeutic interventions that could be more efficient at halting disease progression. In the meantime, the precise moment at which disease phenotypes arise—even asymptomatically—is still unknown. Thus, there is a critical need to better define DMD onset as well as its first manifestations, which could help identify early disease biomarkers and novel therapeutic targets.
Within-firm inequality in workdays and labor productivity: evidence from linked employer–employee Italian data

Using a longitudinal dataset built merging survey and administrative datasets on Italian firms, we investigate the association between productivity growth and labor flexibility focusing on the role of inequality of yearly workdays within firms. In addition to a negative association between productivity growth and the share of fixed-term employment, we find a further negative association between this type of within-firm inequality and labor productivity growth. This finding suggests that higher inequality in workdays may weaken cooperation among workers, affecting productivity.
Constitution of self-efficacy in the early career of physical education teachers

Problem statement: Teaching self-efficacy is built from teacher's interpretations about and also from the personal values that he attributes to the information selected from the environment. Despite research has investigated the contributions of the sources of self-efficacy, little is known about which experiences are selected and weighted by Physical Education beginning teachers to compose teacher' self-efficacy. Purpose: This study aimed to identify, describe and analyze the learning experiences to teach that beginning Physical Education teachers rely on to judge their self-efficacy to teach. Approach: The data were collected through semi-structured interviews with five Physical Education beginning teachers and qualitatively analyzed with the support of NVivo software. Results: Results indicate the prevalence of practical experiences (enactive mastery experience) during teacher education, especially linked to supervised practicum, observational learning experiences (vicarious experience), and teacher guidance (social persuasion) during ongoing education were also significant information for the selfefficacy judgments. Conclusion: special attention can be given to the processes of the supervised practicum programs and situations which involve direct teaching practices during the undergraduate courses and in-service programs.
Biosynthesis and Antimicrobial activities of Silver Nanoparticles (AgNPs) by using Leaf Extracts of Tagetes erecta (Marigold) and Tridax procumbens (Tridax)

In the last few years, it has been seen that the importance of silver nanoparticles has gained much interest by many chemists and biologists. Therefore, Indian medicinal plants has yet to bring numerous sources of profitable, healthy, mostly reduced and stabilized compounds utilized in the biosynthesis of silver nanoparticle. The main aim of this study is to investigate the viable and sustainable ways for the biosynthesis of AgNPs from 1 mM aqueous AgNO3 using leaf extracts of two widely available plants such as Tagetes erecta (Marigold) and Tridax procumbens (Tridax), which are well known for their wide availability and medicinal property. AgNPs were synthesized by the reaction of 1 mM AgNO3 and 5% leaf extracts of each plant separately. The formations of the AgNPs were confirmed by the colour changes of the mixture solution and duly characterized by UV-Visible spectrophotometric analysis. Further, their antibacterial and antifungal activities were tested against two bacterial strains and one fungal strain. Finally, the AgNPs showing better antimicrobial activity was tested for their water disinfection study against three water samples collected from River, Pond and Cannel. Obtained AgNPs from the two different leaf extracts indicated higher antimicrobial activities against Escherichia coli and Bacillus spp. in comparison to both AgNO3 and the raw plant extracts of Marigold and Tridax. The final results showed that both Marigold and Tridax extract silver nanoparticles are showing significant antimicrobial activities, whereas Marigold has little more antimicrobial activity than Tridax. So the bacterial inhibition zone by the silver nanoparticles prepared from the marigold and Tridax leaves extract show maximum inhibition for Gram +ve S. aureus and K. Pnemoniae and Gram negative E. coli as well as A. niger. These synthesised AgNPs when applied for water disinfection, they became a bled to reduce more than 50% of the bacterial growth present in the water samples. At last the synthesized silver nanoparticles were discharged safely in the environment which can be utilized in the processes of pollution remediation. KeywordsSilver Nanoparticles, Phytochemicals, Plant Exatraction, Antimicrobial Activity
Epidemiology of Post-Operative Infections in Traumatology Services, Hospital Ibn Tofail, Mohammed VI UHC of Marrakech

Introduction: Post-operative infections are one of the leading causes of mortality and morbidity in surgery. They represent a serious complication in trauma surgery and limit the potential benefit of surgical interventions. Material and method: Our work is a prospective descriptive study carried out over a period of one year, going from January to December 2017, the samples of which were taken at the level of the traumatology-orthopedics department, then analyzed in the bacteriology laboratory, the Ibn Tofail hospital, CHU Mohamed VI of Marrakech. All patients who had undergone surgery and subsequently developed postoperative infection at least 72 hours after surgery were included in the study. Result: During the study period 55 postoperative infections were diagnosed in 78 operated subjects. The number of germs isolated is 112, 70% of which are BGN and 30% CGP. The distribution by bacterial family demonstrated the predominance of Enterobacteriaceae which represented 46% of isolates, followed by Staphylococci (26%), then nonfermenting BGNs (24%), and Streptococci (4%). The level of resistance of bacteria had shown that all A. baumannii strains were resistant to imipenem, 70% of Enterobacteriaceae showed high level resistance, then 50% of P. aeruginosa were resistant to ceftazidime, and the MRSA rate was 47%. Multidrug resistant bacteria are dominated by ABRI (34%), followed by ESBL-producing Enterobacteriaceae (EBLSE) (29%), MRSA (20%), Carbapenemasous Enterobacteriaceae (ECARBA) (10%) and PARC (7%). ECARBAs exhibit a high level of resistance to aminoglycosides. Both EBLSEs and ABRI were resistant to aminoglycosides and quinolones. For MRSA, only teicoplanin and vancomycin remain active on these bacteria. Finally, PARC showed strong resistance to all antibiotic families. All strains were sensitive to colistin. Conclusion: There are multiple risk factors for postoperative infections in trauma, the most important of which are related to inadequate practices in adequate care, sometimes unsatisfactory technical platforms, advanced state of pathologies.