Miracle-dz/UniFAR-FTUs huggingface dataset:
Experimental and molecular modeling approach to optimize suitable polymers for fabrication of stable fluticasone nanoparticles with enhanced dissolution and antimicrobial activity

Background and aim The challenges with current antimicrobial drug therapy and resistance remain a significant global health threat. Nanodrug delivery systems are playing a crucial role in overcoming these challenges and open new avenues for effective antimicrobial therapy. While fluticasone (FLU), a poorly water-soluble corticosteroid, has been reported to have potential antimicrobial activity, approaches to optimize its dissolution profile and antimicrobial activity are lacking in the literature. This study aimed to combine an experimental study with molecular modeling to design stable FLU nanopolymeric particles with enhanced dissolution rates and antimicrobial activity. Methods Six different polymers were used to prepare FLU nanopolymeric particles: hydroxyl propyl methylcellulose (HPMC), poly (vinylpyrrolidone) (PVP), poly (vinyl alcohol) (PVA), ethyl cellulose (EC), Eudragit (EUD), and Pluronics®. A low-energy method, nanoprecipitation, was used to prepare the polymeric nanoparticles. Results and conclusion The combination of HPMC-PVP and EUD-PVP was found most effective to produce stable FLU nanoparticles, with particle sizes of 250 nm ±2.0 and 280 nm ±4.2 and polydispersity indices of 0.15 nm ±0.01 and 0.25 nm ±0.03, respectively. The molecular modeling studies endorsed the same results, showing highest polymer drug binding free energies for HPMC-PVP-FLU (−35.22 kcal/mol ±0.79) and EUD-PVP-FLU (−25.17 kcal/mol ±1.12). In addition, it was observed that Ethocel® favored a wrapping mechanism around the drug molecules rather than a linear conformation that was witnessed for other individual polymers. The stability studies conducted for 90 days demonstrated that HPMC-PVP-FLU nanoparticles stored at 2°C–8°C and 25°C were more stable. Crystallinity of the processed FLU nanoparticles was confirmed using differential scanning calorimetry, powder X-ray diffraction analysis and TEM. The Fourier transform infrared spectroscopy (FTIR) studies showed that there was no chemical interaction between the drug and chosen polymer system. The HPMC-PVP-FLU nanoparticles also showed enhanced dissolution rate (P<0.05) compared to the unprocessed counterpart. The in vitro antibacterial studies showed that HPMC-PVP-FLU nanoparticles displayed superior effect against gram-positive bacteria compared to the unprocessed FLU and positive control.
Solution-Grown CsPbBr3 Perovskite Single Crystals for Photon Detection

Detection Dmitry N. Dirin,†,‡ Ihor Cherniukh,†,‡ Sergii Yakunin,†,‡ Yevhen Shynkarenko,†,‡,§ and Maksym V. Kovalenko*,†,‡ †Laboratory of Inorganic Chemistry, Department of Chemistry and Applied Biosciences, ETH Zürich, CH-8093 Zürich, Switzerland ‡Laboratory for Thin Films and Photovoltaics, Empa − Swiss Federal Laboratories for Materials Science and Technology, CH-8600 Dübendorf, Switzerland Department of Photonic Processes, Institute of Physics, National Academy of Sciences of Ukraine, 46 Prospekt Nauky, Kyiv 03680, Ukraine
Students’ Perception of Technology Use in Nursing Education

Technology is an integral part of a nurse’s practice; therefore, it is necessary for technology to be integrated into the nursing curriculum for students. Nursing schools are shifting paradigms by integrating technology into the teaching environment to foster active and meaningful learning experiences. Factors related to external influences on individual beliefs, attitudes, and intention to use need to be studied so nurse educators can support the integration of technology into pedagogy. The Technology Acceptance Model was used to evaluate student perceptions of usefulness and ease of use of technology, while matriculated in a baccalaureate level nursing program. Quantitative and qualitative data were collected to uncover how nursing students (N = 375) perceived the usefulness and ease of use of technology while in nursing school. Almost every student (99.7%) owned a smartphone, and 95% were reasonably comfortable using various technologies. Selecting and incorporating technological tools to successfully support learning is essential to overcome challenges and support the innovative delivery of content and use of technology by students.
Wake-model effects on induced drag prediction of staggered boxwings

For staggered boxwings the predictions of induced drag that rely on common potential-flow methods can be of limited accuracy. For example, linear, freestream-fixed wake models cannot resolve effects related to wake deflection and roll-up, which can have significant affects on the induced drag projection of these systems. The present work investigates the principle impact of wake modelling on the accuracy of induced drag prediction of boxwings with stagger. The study compares induced drag predictions of a higher-order potential-flow method that uses fixed and relaxed-wake models, and of an Euler-flow method. Positive-staggered systems at positive angles of attack are found to be particularly prone to higher-order wake effects due to vertical contraction of wakes trajectories, which results in smaller effective height-to-span ratios than compared with negative stagger and thus closer interactions between trailing wakes and lifting surfaces. Therefore, when trying to predict induced drag of positive staggered boxwings, only a potential-flow method with a fully relaxed-wake model will provide the high-degree of accuracy that rivals that of an Euler method while being computationally significantly more efficient. Keywords: wake-model; boxwing; induced drag; potential-flow theory
Post-infarct sleep disruption and its relation to cardiac remodeling in a rat model of myocardial infarction

ABSTRACT Sleep disruption after myocardial infarction (MI) by affecting ubiquitin–proteasome system (UPS) is thought to contribute to myocardial remodeling and progressive worsening of cardiac function. The aim of current study was to test the hypothesis about the increased risk of developing heart failure due to experience of sleep restriction (SR) after MI. Male Wistar rats (n = 40) were randomly assigned to four experimental groups: (1) Sham, (2) MI, (3) MI and SR (MI + SR) (4) Sham and SR (Sham + SR). MI was induced by permanent ligation of left anterior descending coronary artery. Twenty-four hours after surgery, animals were subjected to chronic SR paradigm. Blood sampling was performed at days 1, 8 and 21 after MI for determination of serum levels of creatine kinase-MB (CK-MB), corticosterone, malondialdehyde (MDA) and nitric oxide (NO). Finally, at 21 days after MI, echocardiographic parameters and expression of MuRF1, MaFBx, A20, eNOS, iNOS and NF-kB in the heart were evaluated. We used H&E staining to detect myocardial hypertrophy. We found out that post infarct SR increased corticosterone levels. Our results highlighted deteriorating effects of post-MI SR on NO production, oxidative stress, and echocardiographic indexes (p < 0.05). Moreover, its detrimental effects on myocardial damage were confirmed by overexpression of MuRF1, MaFBx, iNOS and NF-kB (p < 0.001) in left ventricle and downregulation of A20 and eNOS (p < 0.05). Furthermore, histological examination revealed that experience of SR after MI increased myocardial diameter as compared to Sham subjects (p < 0.05). Our data suggest that SR after MI leads to an enlargement of the heart within 21 days, marked by an increase in oxidative stress and NO production as well as an imbalance in UPS that ultimately results in cardiac dysfunction and heart failure.
TREAT-AND-EXTEND REGIMEN USING RANIBIZUMAB FOR POLYPOIDAL CHOROIDAL VASCULOPATHY: One-Year Results

Purpose: To investigate the efficacy of a treat-and-extend regimen (TER) using ranibizumab to treat polypoidal choroidal vasculopathy (PCV). Methods: We retrospectively reviewed the medical records of 29 patients with PCV, who had been treated with a TER for 1 year. The primary outcome was the proportion of eyes that did not lose ≥3 best-corrected visual acuity (BCVA) lines. The number of intravitreal injections and recurrences as well as the maximum treatment interval without recurrence were analyzed. Results: The mean BCVA improved from 0.64 ± 0.42 logMAR (median, 20/80) at baseline to 0.30 ± 0.31 logMAR (median, 20/30) at 12 months (P < 0.001). The mean central subfield macular thickness improved from 307.0 ± 70.2 &mgr;m to 237.5 ± 64.4 &mgr;m (P < 0.001). None of the subjects lost ≥3 lines, and 15 (51.7%) gained ≥3 lines. The mean number of injections was 7.0. The mean maximum treatment interval without recurrence was 10.0 weeks. After the loading phase, 12 eyes (41.4%) showed no recurrence. Seven eyes (24.1%) demonstrated disease activity at 12 months, and 4 (13.8%) of them were never dry during the entire 12-month follow-up duration. Conclusion: The TER effectively improved visual acuity in PCV while reducing the number of injections.
Solidification Analysis of Al‐Si Alloys Modified with Addition of Cu Using In‐Situ Neutron Diffraction

The potential of application of in-situ neutron diffraction for studies of solidification of Al alloys have been previously reported by the authors for the binary hypereutectic A-Si system. This illustrated the potential of neutron diffraction for high resolution melt analysis at near-liquidus temperatures required for advanced studies of grain refining, eutectic modification, etc. The solid and liquid volume fractions were determined based on the change of intensity of neutron diffraction peaks over the solidification interval. The path of non-equilibrium solidification for the alloy modified with addition of copper and magnesium is very complex. Phase diagrams and FactSage-based computations give only approximate kinetics of solid phase(s) evolution during cooling and solidification. On the other hand, in-situ neutron diffraction, coupled with the results of thermal analysis, provides non-biased experimental data on phase evolution; for example, on formation of FCC Al-Cu-Si and diamond silicon during solidification of hypereutectic Al-Si-Cu alloy.
Tuberculous meningitis is associated with higher cerebrospinal HIV-1 viral loads compared to other HIV-1-associated meningitides

To gain a better understanding of the immunopathogenesis of tuberculous meningitis (TBM) and identify potential diagnostic biomarkers that may discriminate TBM from other HIV-1-associated meningitides, we assessed HIV-1 viral load levels, drug resistance patterns in antiretroviral therapy (ART)-experienced patients with persistent viremia and soluble immunological analytes in peripheral blood and cerebrospinal fluid (CSF) of HIV-1 infected patients with TBM versus other meningitides. One hundred and three matched blood and CSF samples collected from HIV-1 infected patients with TBM or other meningitides presenting at a hospital in Durban, South Africa, from January 2009 to December 2011 were studied. HIV-1 RNA and 28 soluble immunological potential biomarkers were quantified in blood plasma and CSF. Viremic samples were assessed for HIV-1 drug resistance mutations. There were 16 TBM, 46 probable TBM, 35 non-TBM patients, and six unclassifiable patients. TBM and non-TBM patients did not differ in median plasma viral load but TBM patients had significantly higher median CSF viral load than non-TBM participants (p = 0.0005). No major drug resistance mutations were detected in viremic samples. Interleukin (IL)-1β, IL-17, platelet derived growth factor (PDGF)-BB, granulocyte colony stimulating factor (G-CSF) and cathelicidin were significantly elevated in the CNS of TBM participants compared to other patients although these associations were lost after correction for false discovery. Our data suggest that TB co-infection of the CNS is associated with enhanced localized HIV-1 viral replication but none of the evaluated soluble immunological potential biomarkers could reliably distinguish TBM from other HIV-associated meningitides.
Synthesis of Graphite Oxide with Different Surface Oxygen Contents Assisted Microwave Radiation

Graphite oxide is synthesized via oxidation reaction using oxidant compounds that have lattice defects by the incorporation of unlike functional groups. Herein, we report the synthesis of the graphite oxide with diverse surface oxygen content through three (B, C, D) different modified versions of the Hummers method assisted microwave radiation compared with the conventional graphite oxide sample obtained by Hummers method (A). These methods allow not only the production of graphite oxide but also reduced graphene oxide, without undergoing chemical, thermal, or mechanical reduction steps. The values obtained of C/O ratio were ~2, 3.4, and ~8.5 for methodologies C, B, and D, respectively, indicating the presence of graphite oxide and reduced graphene oxide, according to X-ray photoelectron spectroscopy. Raman spectroscopy of method D shows the fewest structural defects compared to the other methodologies. The results obtained suggest that the permanganate ion produces reducing species during graphite oxidation. The generation of these species is attributed to a reversible reaction between the permanganate ion with π electrons, ions, and radicals produced after treatment with microwave radiation.
Optimal propofol dosage for i-gel® insertion in healthy paralyzed patients

Background Propofol is used for supraglottic airway device insertion, often with the i-gel. However, the propofol requirement for i-gel insertion has not been explored in paralyzed patients. This study was performed to explore hemodynamic changes and sedation level with different propofol doses in healthy paralyzed patients when the i-gel was inserted. Methods A total of 141 patients undergoing a urologic operation were randomly allocated to three groups depending on the propofol dose (1.5, 2, and 2.5 mg/kg; Groups P1.5, P2, and P2.5, respectively). After patients had been administered each propofol dose and rocuronium, the i-gel was inserted and changes in hemodynamic parameters and bispectral index were evaluated. Results Group P2 showed a lower incidence of complications (17%) such as hemodynamic instability and inadequate sedation than Group P1.5 (55.3%, P < 0.001) or Group P2.5 (40.4%, P = 0.012). The incidence and dose of additional propofol increased in Group P1.5 (51%, median [range]; 20 [0–50]) compared with those in the other groups (0%, 0 [0–0] in Group P2 and 8.5%, 0 [0–50] in Group P2.5, all P < 0.001), and the incidence and dose of additional ephedrine were significantly higher in Group P2.5 (31.9%; 0 [0–20]) than in Group P1.5 (10.6%, P = 0.012; 0 [0–5], P = 0.007, respectively). Conclusions For the stable maintenance of hemodynamic parameters and proper sedation level during i-gel insertion, 2 mg/kg propofol has an advantage over 1.5 mg/kg or 2.5 mg/kg propofol in healthy paralyzed patients.
Effects of silane coupling agent and maleic anhydride-grafted polypropylene on the morphology and viscoelastic properties of polypropylene–mica composites

In this study, morphology, and dynamic and mechanical properties of polypropylene–mica (PP–Mica) composites were investigated. To enhance the adhesion between PP and mica, maleic anhydride-grafted PP (MAPP) and treated mica with silane coupling agent were used. MAPP (as a compatibilizer) and silane coupling agent (as a filler surface modifier) caused an interfacial bonding in the mica filled polypropylene composites. The effect of mica content, MAPP, and treated mica with silane coupling agent on the morphological properties were investigated by Scanning Electron Microscopy (SEM). The results showed that with increasing MAPP or silane coupling agent, dispersion of filler and adhesion between PP and filler were improved. Mechanical data showed that with increasing MAPP and mica treated with silane coupling agent, tensile modulus and flextural strength of composites were enhanced. Dynamic rheological behavior of composites was also investigated within the domain of linear viscoelasticity. The rheological observations indicated that the complex viscosity, storage and loss moduli increased, and tan δ decreased with increasing mica content. POLYM. COMPOS. 27:491–496, 2006. © 2006 Society of Plastics Engineers.
Percutaneous Core Needle Biopsy vs. Fine Needle Aspiration in Diagnosing Benign Lung Lesions

OBJECTIVE To determine the diagnostic value of percutaneous core needle biopsy (PCNB) in comparison with fine needle aspiration (FNA) in patients with benign pulmonary lesions. STUDY DESIGN A retrospective review was undertaken of computed tomography-guided PCNBs and FNAs performed between 1988 and 1997. Both FNA and PCNB biopsies were carried out sequentially at the same visit in every patient. RESULTS A specific benign diagnosis was made in 10/60 cases (16.7%) by FNA and in 49/60 (81.7%) by PCNB. PCNB findings resulted in significant modification of the diagnosis established by FNA. The only significant complication encountered was pneumothorax, at a rate of 11.7%, which is compatible with that reported in the literature for complications induced by FNA alone. CONCLUSION Radiologically guided PCNB is a safe procedure, can provide sufficient histologic material for a specific diagnosis of peripheral lung disease and can avoid more-invasive surgical procedures in many cases. Our experience demonstrated that the histologic analysis provided by PCNB can greatly increase the diagnostic accuracy in benign pulmonary diseases as compared with the yield of FNA.
Plant Phenology and Absence of Sex-Biased Gall Attack on Three Species of Baccharis

Background Dioecy represents a source of variation in plant quality to herbivores due to sexual differences in intensity and timing of resource allocation to growth, defense and reproduction. Male plants have higher growth rates and should be more susceptible to herbivores than females, due to a lower investment in defense and reproduction. Methodology/Principal Findings We compared resource investment to growth and reproduction and its consequences to herbivore attack on three Baccharis species along one year (B. dracunculifolia, B. ramosissima, and B. concinna). Phenological patterns presented by the three species of Baccharis were quite different over time, but the number of fourth-level shoots and plant growth rate did not differ between sexes in any studied species. Intersexual difference in reproductive investment was only observed for B. concinna, with female individuals supporting higher inflorescence density than male individuals throughout the year. Gall abundance on the three Baccharis species was not influenced by plant sex. However, all plant traits evaluated here positively influenced the gall abundance on B. concinna, whereas only the number of fourth-level shoots positively influenced gall abundance on B. ramosissima and B. dracunculifolia. Conclusions/Significance The absence of differential reproductive allocation may have contributed to similar growth and shoot production between the sexes, with bottom-up effects resulting in gender similarities in gall abundance patterns. The number of fourth-level shoots, an indicator of meristem availability to herbivores, was the most important driver of the abundance of the galling insects regardless of host plant gender or species. Albeit the absence of intersexual variation in insect gall abundance is uncommon in the literature, the detailed study of the exceptions may bring more light to understand the mechanisms and processes behind such trend.
Impact of brief self-affirmation manipulations on university students' reactions to risk information about binge drinking.

OBJECTIVES Binge drinking is associated with an array of negative health consequences and is particularly prevalent in university students. Health-risk messages about alcohol may fail to change such behaviour because they are dismissed or derogated. The present study sought to compare the effect of three brief self-affirmation manipulations on message processing, message acceptance, and subsequent alcohol-related behaviour in university students. DESIGN Participants (N = 307) were randomly allocated to condition (kindness questionnaire, values essay, attributes questionnaire, control questionnaire) before reading a health-risk message about binge drinking. METHODS After reading the message, participants completed measures of message processing (message reactance, message evaluation, counter-arguing) and message acceptance (perceived risk, intention, plans) as well as a manipulation check. Alcohol consumption was assessed 1 week later. RESULTS Participants in all three self-affirmation conditions scored significantly higher than participants in the control condition on the manipulation check measure. All other self-affirmation effects were non-significant. CONCLUSIONS While the three self-affirmation manipulations were found to be self-affirming, they failed to impact on measures of message processing, message acceptance, or subsequent behaviour. The findings concur with previous research that questions the use of self-affirmation to reduce alcohol consumption in university students. Current self-affirmation manipulations may not be strong enough to overcome defensive processing of health-risk messages about alcohol in students and/or prime social goals that are related to the domain under threat (i.e., alcohol consumption), thereby nullifying any positive self-affirmation effects. Statement of contribution What is already known on this subject? Health-risk messages to reduce alcohol consumption (e.g., binge drinking) in university students may fail due to defensive processing (e.g., message derogation). Self-affirmation has been proposed as a technique to bolster one's self-integrity and promote open-minded processing of health-risk messages. Most previous studies that have presented health-risk messages about alcohol to university students have used a values essay to self-affirm participants with equivocal results. What does this study add? There are few studies that have directly compared different self-affirmation manipulations. All three self-affirmation manipulations were found by participants to be self-affirming, consistent with the idea that there are multiple ways individuals can self-affirm, but had no significant effects on message processing, message acceptance, or behaviour. Self-affirmation manipulations may lead individuals to reflect on interpersonal values that are related to alcohol consumption in students and may therefore prime the very cognitions and behaviour that they seek to reduce.