Miracle-dz/UniFAR-FTUs huggingface dataset:
Formulation of Sunscreen Cream from Tengkawang Oil (Shorea Sumatrana)

Tengkawang oil is obtained from the seeds of Shorea sumatrana with traditional extraction of press or press. Tengkawang oil which is produced is yellow and freezes at room temperature. Sunscreen cream is a cosmetic product that serves to protect the skin from sun exposure and maintain skin moisture. In order to add tengkawang oil in a sunscreen cream formulation, look for a stable concentration as a cream formulation for sunscreen products from tengkawang oil 5%, 10% and 15%, with a variation of days from 0 days, 7 days, 14 days and 21 days, 28 days. The results of the research on the formulation of making sunscreen cream from tengkawang oil were physical observation with white color with pH 5 and viscosity 56.5 at a concentration of 0% Tengkawang oil, light yellow + at tengkawang oil concentration 5%, 10%, 15% , light yellow ++ at 5%, 10% and 15% tengkawang oil concentration. Light yellow color +++ at 5%, 10% and 15% tengkawang oil concentration. With a distinctive odor, high viscosity at a concentration of 15% tengkawang oil on day 28 (120 dPas) and the lowest viscosity at 5% tengkawang oil concentration on day 28 (56 dPas) with a distinctive odor and pH 5.
Evolving visual arts’ faculty pedagogical skills through technology integration in higher education

This study is about the current status of technology’s usage by visual arts’ faculty members to enhance their pedagogical skills. It explores the impact of using technology in visual arts and the constraints in its integration. Researchers used qualitative research design to conduct this study. Data was collected, through semi-structured interviews, from faculty working in painting department of four institutions of Lahore, Pakistan. The findings of the study showed that faculty members were using technology for different purposes such as for art making, research and communications. However, at the same time, the use of technology was limited due to various factors, such as, insufficient funding, lack of training, teachers’ un-willing attitude and deficiency in curriculum regarding technology integration.
Brine Shrimp Lethality and Antioxidant Activity of the Leaf, Rind and Seed Ethanolic Extracts of Durio zibethinus L.

Introduction: Substances derived from plants have recently receiving renewed interest due to their versatile applications. Parts of Durio zibethinus L. have been used traditionally as remedy to many diseases. To date, limited reports on the cytotoxicity and antioxidative property of D. zibethinus parts are available. Objective: The study aims to determine the cytotoxic and antioxidative property of the leaf, seed and rind ethanolic extracts of D. zibethinus L. Materials and Methods: Cytotoxicity of the leaf, seed and rind ethanolic extracts of D. zibethinus L. were determined through Brine Shrimp Lethality Assay (BSLA) while antioxidative property were measured via 2,2-diphenyl-1-picrylhydrazyl (DPPH) Radical Scavenging Activity and Reducing Power Assay. Results and Discussions: Results of the BSLA showed that the LC50 value of the ethanolic leaf, rind and seed extracts are 624.00, 139.31 and 46.28 mg/L, respectively. The data indicate potential cytotoxic property of the rind and seed extracts which can be attributed to the anthraquinones, flavonoids, phenolics, saponins and terpenoids detected in the rinds and seed extracts. The effective concentration (EC50) value for the DPPH radical scavenging activity and reducing power for the seed and rind ethanolic extracts showed significantly higher activity compared to the leaf extract. Similarities in the trend of the DPPH inhibition and reducing power of the ethanolic extracts of the leaves, rinds and seed ethanolic extracts imply direct correlation between DPPH scavenging activity and reducing power (P<0.01). Conclusion: D. zibethinus seeds and rinds can be potential sources of natural cytotoxic and antioxidant compounds.
The Impact of Repeated Reading Intervention on Improving Reading Fluency and Comprehension of Emirati Students with Learning Disabilities

Reading is a major problem for most students with learning disabilities in the United Arab Emirates. The purpose of this study was to examine the impact of repeated reading intervention strategy on improving oral reading fluency and reading comprehension of 47 United Arab Emirates students with learning disabilities. All participants were assigned to a reading strategy condition. Participants completed pretest and posttest on reading skills. Data was analyzed using t-test measures. A statistical significant difference was found in the pretest scores and posttest scores. In other words, the results of this study indicated that repeated reading strategy is an excellent instructional intervention to teach reading to children with learning disabilities.
Perovskite Solar Cell Modeling Using Light- and Voltage-Modulated Techniques

The analysis of the impedance spectroscopy (IS) data of perovskite solar cells (PSCs) has been challenging so far, with the low-frequency phenomena in particular yielding ambivalent results and interpretations. We tackle this problem by carrying out intensity-modulated photocurrent spectroscopy (IMPS) measurements at open-circuit (OC) conditions on CH3NH3PbBr3 cells prepared by the flash infrared annealing method with different electron-selective contacts. We identify the existence of a capacitance of the order 10–4 F·cm–2 that is not discernible from IS measurements, which is attributed to the accumulation of anions at the perovskite/spiro-OMeTAD interface, which also likely includes an electronic component. This interface is a dominant recombination pathway at lower voltages and can account for the large disparity in fill factors observed in PSCs. By developing detailed models for the IMPS response at both OC and short-circuit conditions, we also confirm that the arcs observed in the upper quadrant of t.
Anti-Osteogenic Activity of Cadmium in Zebrafish

Among the many anthropogenic chemicals that end up in the aquatic ecosystem, heavy metals, in particular cadmium, are hazardous compounds that have been shown to affect developmental, reproductive, hepatic, hematological, and immunological functions in teleost fish. There is also evidence that cadmium disturbs bone formation and skeletal development, but data is scarce. In this work, zebrafish was used to further characterize the anti-osteogenic/osteotoxic effects of cadmium and gain insights into underlying mechanisms. Upon exposure to cadmium, a reduction of the opercular bone growth was observed in 6-days post-fertilization (dpf) larvae and an increase in the incidence of skeletal deformities was evidenced in 20-dpf post-larvae. The extent and stiffness of newly formed bone was also affected in adult zebrafish exposed to cadmium while regenerating their caudal fin. A pathway reporter assay revealed a possible role of the MTF-1 and cAMP/PKA signaling pathways in mechanisms of cadmium osteotoxicity, while the expression of genes involved in osteoblast differentiation and matrix production was strongly reduced in cadmium-exposed post-larvae. This work not only confirmed cadmium anti-osteogenic activity and identified targeted pathways and genes, but it also suggested that cadmium may affect biomechanical properties of bone.
Semiconducting Polymer Dots with Modulated Photoblinking for High‐Order Super‐Resolution Optical Fluctuation Imaging

Super‐resolution optical fluctuation imaging (SOFI) uses photoblinking to achieve fast, background free, 3D fluorescence nanoscopy. The on/off photoblinking characteristics are key factors for realizing high‐order SOFI. However, it remains a great challenge to tune the photoblinking of a fluorescent probe because most of the probes are typical single fluorophore systems with stochastic blinking nature. In this study, effective photoblinking modulation is demonstrated in a nanoscale multichromophoric system consisting of donor–acceptor semiconducting polymers. Numerical simulation is performed to quantitatively evaluate the impact of the number of acceptors on the photoblinking of the nanoparticle probe as well as the spatial resolution of the resulting SOFI nanoscopy. In tandem with simulation, a series of polymer dots (Pdots) are designed with varying donor–acceptor moieties that give rise to the modulated photoblinking behaviors, as evidenced by single‐particle fluorescence trajectories. The photoblinking behaviors are quantitatively compared in terms of autocorrelation function, dot retention fraction, and on/off time ratio. High‐performance photoblinking‐based nanoscopy is implemented by using the optimized Pdots, resolving subcellular structure at a spatial resolution of ≈95 nm. This study provides a useful approach to engineer the photoblinking properties of fluorescent nanoparticles for super‐resolution imaging applications.
Effect of pH variations on morphological transformation of biosynthesized MgO nanoparticles

Abstract Plant leaf extract synthesis of nanoparticles serves as a better alternative to chemical synthesis routes as the nanoparticles synthesized are less toxic and possess higher flexibility for scaling up process. Phyto-synthesized metal oxides, especially magnesium oxide (MgO) nanoparticles possess enormous unique properties to be used in drug delivery and therapeutic application. Thus, the aim of the present work is to investigate the effect of pH on the shape transformation of MgO nanoparticles prepared using Amaranthus tricolor leaf extract. UV-visible spectrophotometer and dynamic light scattering technique were initially used to analyze the effect of pH variation on particle sizes and surface charges. MgO nanoparticles at pH 3 were identified to be formed in smaller sizes of ∼44nm with a slightly negative surface charge of −3.39 mV and were postulated that its shape can be transformed to hexagon. Hexagonal shaped particles are highly beneficial in biomedical application as they show less cytotoxicity and increased bioactivity due to the presence of edge surface atoms. FTIR spectral analysis and TEM images confirm that the size and shape of the MgO nanoparticle at acidic pH 3 was reduced and transformed to hexagon. Additionally, possible mechanism of nanoparticle protonation and deprotonation leading to their morphology changes was also proposed in the paper.
Le rôle de la sphingosine-1-phosphate et impact des analogues de la sphingosine dans le remodelage pulmonaire

V TABLE DES MATIÈRES . VII LISTE DES TABLEAUX . X LISTE DES FIGURES . XI LISTE DES ABBRÉVIATIONS . XIII REMERCIEMENTS . XV AVANT-PROPOS . XVII 1. CHAPITRE I : INTRODUCTION . 1 1.1 LE REMODELAGE PULMONAIRE . 1 1.2 L’ASTHME . 3 1.2.1 La physiopathologie de l’asthme . 6 1.2.2 La sensibilisation . 8 1.2.3 La cascade inflammatoire . 10 1.2.4 Le remodelage bronchique . 13 1.2. 5 Les modèles expérimentaux . 15 1.3 LA FIBROSE PULMONAIRE . 18 1.3.1 La physiopathologie de la fibrose pulmonaire . 19 1.3.2 Les mécanismes de la fibrose pulmonaire . 20 1.3.3 Les modèles expérimentaux . 30 1.4 LES SPHINGOLIPIDES . 33 1.4. 1 Les analogues de la sphingosine . 39 1.4. 2 Le rôle des sphingolipides et de leurs analogues dans l’asthme . 41 1.4. 3 Le rôle des sphingolipides et de leurs analogues dans la fibrose pulmonaire . 43 2. CHAPITRE II : PROBLÉMATIQUE, HYPOTHÈSES ET OBJECTIFS . 46 2.1 PROBLÉMATIQUE, HYPOTHÈSES ET OBJECTIFS RELATIFS AU CHAPITRE III . 46 2.2 PROBLÉMATIQUE, HYPOTHÈSES ET OBJECTIFS RELATIFS AU CHAPITRE IV . 47 2.3 PROBLÉMATIQUE, HYPOTHÈSES ET OBJECTIFS RELATIFS AU CHAPITRE V . 48 2.4 PROBLÉMATIQUE, HYPOTHÈSES ET OBJECTIFS RELATIFS AU CHAPITRE VI . 49 3. CHAPITRE III : TREATMENT WITH A SPHINGOSINE ANALOG AFTER THE INCEPTION OF HOUSE DUST MITE-INDUCED AIRWAY INFLAMMATION ALLEVIATES KEY FEATURES OF EXPERIMENTAL ASTHMA. 51 3.1 RÉSUMÉ . 51 3.2 ABSTRACT . 52 3.3 BACKGROUND . 53 3.4 METHODS . 54 3.4. 1 Murine Model of Asthma . 54 3.4. 2 Immunoglobulin Titration . 54 3.4. 3 Experimental Treatments . 55 3.4. 4 Differential Counts, Flow Cytometric Analyses and Quantification of Cytokines . 55 3.4. 5 Histology . 55 3.4. 6 Measurement of Airway Responsiveness . 56 3.4. 7 Statistical Analyses . 56
Antifouling paint composition comprising rosin and enzyme

The invention endopeptidase agent subtilis Shin (EC 3.4.21.62) and Alcalase As the antifouling paint composition containing the same enzyme, and a herpes compound, enzyme provides an antifouling paint composition, characterized in that effective to reduce the adhesion of the aquatic living body of the surface coated with the composition, or prevented. Method for preventing the adhesion of surfaces by aquatic organisms is also described.
Preparation of mineral bound particleboards with improved fire retardant and smoke suppression properties based on a mix of inorganic adhesive

Abstract An inorganic adhesive mix consisting of MgO, MgCl2, Na2SiO3, Na3PO4 was used to prepare mineral bound particleboard (mbPB) without formaldehyde emission and with excellent fire retardant and smoke suppression properties. The mechanical properties, interior microstructure, fire retardancy and smoke suppression behavior of the mbPB was investigated based on scanning electron microscopy (SEM) and cone calorimetric observations. The results showed that the presence of massive hydrates of the inorganic adhesive covers the mbPB particles, which are responsible for the positive effects. The effective smoke suppression was accompanied by an essential carbon monoxide (CO) and carbon dioxide (CO2) decrement in the gaseous effluents. The mbPBs are suitable as indoor material for wall, floor, and furniture as fire retardant and smoke suppressive materials.
Effects of emulsion properties on demulsification of the phosphoric acid–tributyl phosphate (W/O) emulsion by hydrocyclone

ABSTRACT In this study, the effects of emulsion properties on demulsification of the phosphoric acid–tributyl phosphate (W/O) emulsion by hydrocyclone were investigated. The droplet size distributions were measured pre and post demulsification. The demulsification performance was evaluated by calculating the average droplet size difference. The results showed that increasing kerosene addition in the oil phase improved demulsification efficiency. As the maximum amount of kerosene added in the oil phase, average droplet size difference could reach about 43 µm. In each composition, as the stirring rate increased from 3000 to 7000 r/min, the effect of initial droplet size distribution on demulsification by hydrocyclone was not obvious. A model for predicting average droplet size difference was established by dimensional analysis method. By comparing the experimental data with calculated ones, this model is available.
Effectual qualitative chemical evaluation of Euphorbia neriifolia Linn. by using fluorescence analysis

Objective -Plants contain numerous biologically active compounds, many of these have been shown to exhibit therapeutic and antimicrobial properties and therefore they were in use as antimicrobial drugs in traditional medicines. Euphorbia neriifolia Linn. belongs to the family Euphorbiaceae. Assessment of medication implies affirmation of its personality and assurance of its quality and virtue and recognition of nature of debasement. Throughout the years the nature and level of assessment of rough medications has experienced an efficient changes. Hence, in the present study an attempt has been made for effectual qualitative evaluation of dried powdered leaves and stem of Euphorbia neriifolia Linn. by fluorescence analysis. Design & Intervention- The dried powdered sample of Euphorbia neriifolia Linn. leaves and stem has been used to perform fluorescence analysis under the visible day light and UV light of short wavelength (254 nm) and long wavelength (365 nm) for their characteristic colour. Main outcome measures- The ultra violet light creates fluorescence in numerous common items, which don't noticeably fluoresce in sunshine. In the event that the substances themselves are not fluorescent, they may frequently be changed over into fluorescent subordinates or disintegration items by applying diverse reagents. The hues created by these reagents speak to the nearness of dynamic constituents. Results- The fluorescence character of any powdered character of any powdered medication is exceptionally particular and supportive distinctive highlights for the assurance of a medication. Conclusion- The dried powder and herbal extracts of Euphorbia neriifolia Linn. leaves and stem showed varied fluorescence character which is an essential parameter for standardization of herbs. Keywords: Euphorbia neriifolia Linn. , Standardization, Fluorescence analysis, Evaluation, Euphorbiaceae.
From Actinides to Zinc: Using the Full Abundance Pattern of the Brightest Star in Reticulum II to Distinguish between Different r-process Sites

The ultra-faint dwarf galaxy Reticulum II was enriched by a rare and prolific r-process event, such as a neutron star merger (NSM). To investigate the nature of this event, we present high-resolution Magellan/MIKE spectroscopy of the brightest star in this galaxy. The high signal-to-noise allows us to determine the abundances of 41 elements, including the radioactive actinide element Th and first ever detections of third r-process peak elements (Os and Ir) in a star outside the Milky Way. The observed neutron-capture element abundances closely match the solar r-process component, except for the first r-process peak, which is significantly lower than solar but matches other r-process enhanced stars. The ratio of the first peak to heavier r-process elements implies that the r-process site produces roughly equal masses of high and low electron fraction ejecta, within a factor of 2. We compare the detailed abundance pattern to predictions from nucleosynthesis calculations of NSMs and magnetorotationally driven jet supernovae, finding that nuclear physics uncertainties dominate over astrophysical uncertainties. We measure , somewhat lower than all previous Th/Eu observations. The youngest age we derive from this ratio is 21.7 ± 2.8 (stat) ± 10.3 (sys) Gyr, indicating that current initial production ratios do not describe the r-process event in Reticulum II. The abundances of light elements up to Zn are consistent with extremely metal-poor Milky Way halo stars. They may eventually provide a way to distinguish between NSMs and magnetorotationally driven jet supernovae, but this would require more detailed knowledge of the chemical evolution of Reticulum II.
Préparation d'un substrat biodégradable et multifonctionnel et modulation électrique des fonctions cellulaires des osteoblasts = : Preparation of multifunctional biodegradable substrate and electrical modulation of osteoblast cellular functions

Cellular activity responds to electrical stimulation (ES). This thesis was to develop a multifunctional composite and to study the response of osteoblasts to the ES mediated through such a composite. The specific objectives were: to produce high-conductivity and high-yield polypyrrole (PPy) particles by controlling its particle size and molecular regularity; to bioactivate the PPy particles by doping with the bioactive macromolecule heparin (HE); to prepare biodegradable and conductive PPy/HE-based composites with high electrical stability and good biologic affinity; and to study osteoblast proliferation and mineralization on the conductive scaffold under ES. Chapter I reviews the bioelectricity at different levels in humans, the possible mechanisms of how electricity acts on cells, and ES studies in bone tissue engineering. It also provides a critical review of the different ES techniques and approaches in both scientific study and the clinical setting. The hypotheses and objectives of the thesis are presented. Chapter II reports on the synthesis of PPy nanoparticles through emulsion polymerization using Fenton's reagent as the oxidant. These particles showed hollowcentered polygon morphology with an edge thickness of approximately 50 nm and a polygon diameter of 400-500 nm. The crystalline nature of the PPy particles was confirmed. A plausible mechanism is proposed. Chapter III reports on the bioactivation of the PPy particles using HE as the dopant, the preparation of a biodegradable conductive composite membrane, and the culture of fibroblasts on these membranes. HE doping improved the electrical stability of the composite and enhanced cell adhesion and proliferation. Chapter IV demonstrates that ES mediated by PLLA/PPy/HE substrate can modulate osteoblast activity and promote bone formation. An optimal direct current potential gradient of 200mV/mm with an exposure time between 2 and 8 h
Unexplained Total Fertilization Failure after Intracytoplasmic Sperm Injection Cycles: A Case-Control Study on Predictive Factors and Retreatment Prognosis

Background The aim of our study was to detect the rate of unexplained total fertilization failure (TFF) after intracytoplasmic sperm injection (ICSI) and identify its risk factors and retreatment prognosis. Materials and Methods In this retrospective case-control study, we searched the computerized database of the Royan Institute (Tehran, Iran) from March 2015 to March 2019 and retrieved all cases diagnosed with TFF after ICSI. TFF cases that did not have any recognized risk factors were classified as unexplained (subgroup A). Cases with recognized risk factors were classified as subgroup B. The control group was randomly selected from infertile couples who underwent ICSI cycles with fertilization of at least one oocyte during the same time interval. Characteristics and treatment outcomes of the cases with unexplained TFF (subgroup A) were compared to the control group, and to the other TFF cases (subgroup B). Results Out of 18,750 couples who underwent ICSI cycles, 296 (1.58%) experienced TFF for the first time. Of these, 49 (16.5%) couples were diagnosed as unexplained TFF (subgroup A) and 247 (83.5%) were placed in subgroup B, TFF with expected risk factors. Multivariable logistic regression analysis showed that the total number of mature oocytes (P<0.001), duration of infertility (P=0.043), and women’s body mass index (BMI, P<0.001) were significant predictive factors for unexplained TFF. In the ICSI cycle after TFF, clinical pregnancy and live birth rates in subgroup A were higher than subgroup B. Although differences between these groups were not statistically significant (P=0.14 and P=0.07, respectively), this finding could be clinically important. Conclusion Unexplained TFF following ICSI is a rare event significantly related to a lower number of mature oocytes, longer duration of infertility and higher female BMI. It has a good prognosis in retreatment cycles in comparison with expected TFF cases. Clinicians should take this into consideration for patient counseling and management.
Adsorption and desorption of a positively charged polymer on silica and implications for environmental processes

Studio dell'adsorbimento di macromolecule su superfici ambientali per la comprensione e la progettazione di fenomeni geochimici e di trattamento acque, come la coagulazione-flocculazione e il trasporto di nanoparticelle in acque superficiali e in mezzi porosi saturi.