bluuebunny/crossref_metadata_2025 huggingface dataset:
COVID-19 and mental health: A narrative review of relevant literature
Authors: Ria Dutta
Published: August 2022

In the late 2019 and early 2020s, a new variant of SaRs-CoV, now known as Corona virus or COVID-19, debuted internationally. Within a short time, the virus spread on such a scale that it resulted in drastic measures, like worldwide lockdown and strict social distancing, to fight against COVID-19. This study aims to explore the effects of COVID-19 and such protective measures on individuals from different population groups, ages, and walks of life. The literature review method was employed for this study where search words such as ‘aged people’, ‘children’, ‘COVID-19’, ‘families’, ‘healthcare workers’, ‘mental health’, ‘psychological’, ‘social’ and ‘students.’ were used. The findings of this study suggest that the psychological, emotional, and social complications of COVID-19 are not easily or quickly visible as the physical ones. After months of the COVID-19 pandemic, the mental health effects are starting to emerge and pose a serious threat to the well-being of those concerned and the broader society. Likewise, these mental health effects will not vanish as easily and are estimated to stay behind long after the COVID-19 pandemic is over. Anxiety, depression, compulsive-obsessive behaviour, hoarding behaviour, panic, stigmatization, and stress are some of the most common identified themes across different population groups. The need for mental health awareness and intervention strategies is ever so important now. Certain recommendations are also suggested in this paper.
MULTI-OBJECTIVE OPTIMIZATION OF AMBULANCE LOCATION IN ANTOFAGASTA, CHILE
Authors: Olivos Carlos , Caceres Hernan
Published: August 2022

In this paper, we solved an ambulance location problem with a multi-objective framework considering the case of the study of Emergency Medical Service (EMS) of Antofagasta (Chile). Nowadays, in Antofagasta, the ambulances are located in bases that are not necessarily the optimal location achieving an estimated 67% of coverage under the 8 min not meeting the requirements dictated by the Chilean Ministry of Health. We used a multi-objective model considering mean response time, maximum response time, and the demand not covered. The model is solved using an iterative ε-constraint method to generate a Pareto set of efficient solutions. We considered historical data from the years 2015 and 2016 to generate the demand and emergency nodes with a clustering algorithm. The results show improvements on all criteria of the multi-objective model, where we highlight a potential increment on coverage within 8 min from 67 to 99%. In order to test the new policy in a real setting, a pilot plan is proposed, which reaches 89% of coverage within 8 min.
Gap Opening and Inner Disk Structure in the Strongly Accreting Transition Disk of DM Tau
Authors: Francis Logan , Marel Nienke van der , Johnstone Doug , Akiyama Eiji , Bruderer Simon , Dong Ruobing , Hashimoto Jun , Liu Hauyu Baobab , Muto Takayuki , Yang Yi
Published: August 2022

Large inner dust gaps in transition disks are frequently posited as evidence of giant planets sculpting gas and dust in the disk, or the opening of a gap by photoevaporative winds. Although the former hypothesis is strongly supported by the observations of planets and deep depletions in gas within the gap in some disks, many T Tauri stars hosting transition disks accrete at rates typical for an undepleted disk, raising the question of how gap opening occurs in these objects. We thus present an analysis of the structure of the transition disk around the T Tauri star DM Tau, which is strongly accreting (∼10−8.3
M
⊙ yr−1) and turbulent (α = 0.078 ± 0.02). Using the Dust And LInes thermochemical code, we fit disk models to simultaneously reproduce the accretion rate, high level of turbulence, the gas traced by ALMA Band 6 observations of 12CO, 13CO, and C18O J = 2–1 lines, and the observed dust emission from the millimeter continuum and spectral energy distribution. We find a shallow depletion in gas surface density of ∼10 relative to the outer disk and a gas-rich inner disk that is consistent with the observations. The planet mass of <1 M
Jup implied by the gap depth is in tension with predictions for dust trapping in a highly viscous disk, which requires a more massive planet of ∼10 M
Jup. Photoevaporative models including a dead zone can qualitatively reproduce some features of the DM Tau disk, but still struggle to explain the high accretion rates and the observed millimeter-continuum flux.
METAL: The Metal Evolution, Transport, and Abundance in the Large Magellanic Cloud Hubble Program. IV. Calibration of Dust Depletions versus Abundance Ratios in the Milky Way and Magellanic Clouds and Application to Damped Lyα Systems
Authors: Roman-Duval Julia , Jenkins Edward B. , Tchernyshyov Kirill , Clark Christopher J. R. , Cia Annalisa De , Gordon Karl D. , Hamanowicz Aleksandra , Lebouteiller Vianney , Rafelski Marc , Sandstrom Karin , Werk Jessica , Merica-Jones Petia Yanchulova
Published: August 2022

The evolution of the metal content of the universe can be tracked through rest-frame UV spectroscopy of damped Lyα systems (DLAs). Gas-phase abundances in DLAs must be corrected for dust depletion effects, which can be accomplished by calibrating the relation between abundance ratios such as [Zn/Fe] and depletions (the fraction of metals in gas, as opposed to dust). Using samples of gas-phase abundances and depletions in the Milky Way (MW), LMC, and SMC, we demonstrate that the relation between [Zn/Fe] and other abundance ratios does not change significantly between these local galaxies and DLAs, indicating that [Zn/Fe] should trace depletions of heavy elements in those systems. The availability of photospheric abundances in young massive stars, a proxy for the total (gas+dust) metallicity of neutral gas, in the MW, LMC, and SMC allows us to calibrate the relation between [Zn/Fe] and depletions in these nearby galaxies. We apply the local calibrations of depletions to DLAs. We find that the fraction of metals in dust, the dust-to-gas ratio, and total abundances are 2–5 times lower than inferred from previous depletion calibrations based on MW measurements and a different formalism. However, the trend of dust abundance versus metallicity remains only slightly sublinear for all existing depletion calibrations, contrary to what is inferred from far-IR (FIR), 21 cm, and CO emission in nearby galaxies and predicted by chemical evolution models. Observational constraints on the FIR dust opacity and depletions at metallicities lower than 20% solar will be needed to resolve this tension.
Galactic Kinematics and Observed Flare Rates of a Volume-complete Sample of Mid-to-late M Dwarfs: Constraints on the History of the Stellar Radiation Environment of Planets Orbiting Low-mass Stars
Authors: Medina Amber A. , Winters Jennifer G. , Irwin Jonathan M. , Charbonneau David
Published: August 2022

We present a study of the relationship between Galactic kinematics, flare rates, chromospheric activity, and rotation periods for a volume-complete, nearly all-sky sample of 219 single stars within 15 pc and with masses between 0.1 and 0.3 M
⊙ observed during the primary mission of TESS. We find all stars consistent with a common value of α = 1.984 ± 0.019 for the exponent of the flare frequency distribution. Using our measured stellar radial velocities and Gaia astrometry, we determine Galactic UVW space motions. We find 78% of stars are members of the Galactic thin disk, 7% belong to the thick disk, and for the remaining 15% we cannot confidently assign membership to either component. If we assume star formation has been constant in the thin disk for the past 8 Gyr, then based on the fraction that we observe to be active, we estimate the average age at which these stars transition from the saturated to the unsaturated flaring regime to be 2.4 ± 0.3 Gyr. This is consistent with the ages that we assign from Galactic kinematics: we find that stars with rotation period P
rot < 10 days have an age of 2.0 ± 1.2 Gyr, stars with 10 days < P
rot ≤ 90 days have an age of 5.6 ± 2.7 Gyr, and stars with P
rot > 90 days have an age of 12.9 ± 3.5 Gyr. We find that the average age of stars with P
rot < 10 days increases with decreasing stellar mass from 0.6 ± 0.3 Gyr (0.2–0.3 M
⊙) to 2.3 ± 1.3 Gyr (0.1–0.2 M
⊙).
Solid Accretion onto Neptune-mass Planets. I. In Situ Accretion and Constraints from the Metallicity of Uranus and Neptune
Authors: Hasegawa Yasuhiro
Published: August 2022

The currently available, detailed properties (e.g., isotopic ratios) of solar system planets may provide guides for constructing better approaches to exoplanet characterization. With this motivation, we explore how the measured values of the deuterium-to-hydrogen (D/H) ratio of Uranus and Neptune can constrain their formation mechanisms. Under the assumption of in situ formation, we investigate three solid accretion modes: a dominant accretion mode switches from pebble accretion to drag-enhanced three-body accretion and to canonical planetesimal accretion, as the solid radius increases. We consider a wide radius range of solids that are accreted onto (proto)Neptune-mass planets and compute the resulting accretion rate as a function of both the solid size and the solid surface density. We find that for small-sized solids, the rate becomes high enough to halt concurrent gas accretion if all the solids have the same size. For large-sized solids, the solid surface density needs to be enhanced to accrete enough amounts of solids within the gas disk lifetime. We apply these accretion modes to the formation of Uranus and Neptune and show that if the minimum-mass solar nebula model is adopted, solids with a radius of ∼1 m to ∼10 km should have contributed mainly to their deuterium enrichment; a tighter constraint can be derived if the full solid size distribution is determined. This work therefore demonstrates that the D/H ratio can be used as a tracer of solid accretion onto Neptune-mass planets. Similar efforts can be made for other atomic elements that serve as metallicity indicators.
The Hadron-quark Crossover in Neutron Star within Gaussian Process
Regression Method
Authors: Huang Kaixuan , Hu Jinniu , Zhang Ying , Shen Hong
Published: August 2022

The equations of state of the neutron star at the hadron-quark crossover region
are interpolated with the Gaussian process regression (GPR) method, which can
reduce the randomness of present interpolation schemes. The relativistic
mean-field (RMF) model and Nambu–Jona-Lasinio (NJL) model are employed to
describe the hadronic phase and quark phase, respectively. In the RMF model, the
coupling term between ω and ρ mesons is considered to control the density-dependent behaviors
of symmetry energy, i.e., the slope of symmetry energy L. Furthermore, the vector interaction between quarks is included
in the NJL model to obtain the additional repulsive contributions. Their
coupling strengths and the crossover windows are discussed in the present
framework under the constraints on the neutron star from gravitational-wave
detections, massive neutron star measurements, mass–radius simultaneous
observation of the NICER Collaboration, and the neutron skin thickness of
208Pb from PREX-II. It is found that the slope of symmetry
energy, L, should be around 50−90 MeV and the
crossover window is (0.3, 0.6) fm−3 with these observables.
Furthermore, the uncertainties of neutron star masses and radii in the
hadron-quark crossover regions are also predicted by the GPR method.
Is Thermohaline Mixing the Full Story? Evidence for Separate Mixing Events near the Red Giant Branch Bump
Authors: Tayar Jamie , Joyce Meridith
Published: August 2022

The abundances of mixing-sensitive elements including lithium, [C/N], and 12C/13C are known to change near the red giant branch bump. The explanation most often offered for these alterations is double diffusive thermohaline mixing in the stellar interior. In this analysis, we investigate the ability of thermohaline mixing to explain the observed timing of these chemical depletion events. Recent observational measurements of lithium and [C/N] show that the abundance of lithium decreases before the abundance of [C/N], whereas numerical simulations of the propagation of the thermohaline-mixing region computed with MESA show that the synthetic abundances drop simultaneously. We therefore conclude that thermohaline mixing alone cannot explain the distinct events of lithium depletion and [C/N] depletion, as the simultaneity predicted by simulations is not consistent with the observation of separate drops. We thus invite more sophisticated theoretical explanations for the observed temporal separation of these chemical depletion episodes as well as more extensive observational explorations across a range of masses and metallicities.
Assessing the Detectability of Europa’s Seafloor Topography from Europa Clipper’s Gravity Data
Authors: Koh Ze-Wen , Nimmo Francis , Lunine Jonathan I. , Mazarico Erwan , Dombard Andrew J.
Published: August 2022

Due to its size and tidal heating, Europa may potentially possess active volcanism and hydrothermal circulation at its seafloor. The upcoming Europa Clipper mission provides the opportunity to obtain global gravity maps over a range of spatial scales, up to degree l ≈ 10. We assess the ability of such gravity measurements to determine Europa’s seafloor topography, building on and extending previous work in this area. We create a suite of models that test the gravity signature of a wider range of possible topographies and lithospheric thicknesses, spacecraft close-approach altitudes, and the effect of a gypsum layer on the seafloor. Additionally, we model Europa’s seafloor scaled from other geologically active bodies, i.e., Earth, Venus, and Io, investigating the distinguishability of volcanic or plate tectonic features. We find that seafloor topography should be detectable at the resolution of Clipper, while the ice shell characteristics (e.g., via admittance analysis) are not resolvable globally. In our baseline scenario, seafloor topography dominates the total gravity signal up to degree l = 22, while for planetary analogs this proves true up to degree l = 11 for an Earth-scaled seafloor, as well as l = 42 and l = 54 for a Venus- or Io-scaled seafloor. Finally, we find that a putative layer of gypsum on the seafloor reduces the gravity signal by flattening out the seafloor, though its presence will not be detectable absent independent determination of its topographic amplitude.
Case Report: Cryptococcal Meningitis
Authors: Paramitha Popy , Ritarwan Kiking
Published: August 2022

BACKGROUND: Cryptococcal meningitis is one of the most common opportunistic infections in immunocompromised patients. Mostly it manifests as subacute/chronic meningitis, although pathological findings suggest extensive tissue invasion of the brain parenchyma and meninges. This disease has a very high mortality rate, even with the administration of an antifungal combination.

CASE REPORT: Male, 53 years old, with clinical symptoms of headache, was experienced by the patient from 1 month before admission and worsening within 1 week. The headache describe throbbing throughout the head, with severe intensity, and does not go away with pain medications. The frequency of headaches is persistent and does not go away with pain medications. A history of weight loss was found, about 10 kg in 3 months. A history of free sex was found. History of HIV known since 1 day before admission to hospital and has not undergone antiretroviral treatment. The patient was diagnosed with cryptococcal meningitis on the basis of the finding of yeas t-like cells on the Indian ink test, and the patient was also a stage IV HIV patient with a decreased CD4 count. The patients treated with tapering off dexamethasone injection, 1× 960 mg Cotrimoxazole, 400 mg/24 h injection of fluconazole, and 3 × 1 folic acid, and received 1 × 1 fixed dose combination antiretrovirals therapy.

CONCLUSION: Cryptococcal meningitis is a disease caused by cryptococcal fungi and its incidence increases with the increase in diseases associated with immune system disorders such as HIV.
Case Report: Ekbom Syndrome Presented with Shared Psychotic Disorder
Authors: Mardhiyah Sarah A. , Effendy Elmeida
Published: August 2022

Background: Ekbom syndrome, which is also known as delusional parasitosis, is an infrequent psychotic disorder that is marked by a very intense and strongly unshakeable false belief that there is a parasitic infestation, usually occurring on or beneath the skin, even though there is no medical proof to explain it. This phenomenon can also present with a shared psychotic disorder which eventually is very rare, accounting for only 5-15%  of psychiatric cases worldwide.  
 
Case Presentation: Mrs. Z, a 56-year-old woman, consulted the emergency unit of Universitas Sumatera Utara General Hospital along with her daughter, complaining of serious itchiness and skin problem due to crawling bugs and worms beneath her skin. Mrs. Z appeared furious, agitated and hyperventilating. Her daughter also admitted that she has the same skin condition. They have tried to appoint a consultation to several doctors but did not get any “appropriate” explanation. 1 ml of Haloperidol (5mg/ml) was initially administered via IM injection to calm Mrs. Z, and oxygen was given to help ease her breathing. We then advised Mrs.  Z and her daughter to visit our psychiatry outpatient clinic the day afteron the next day. Through a careful interview, we found that Mrs.  Z experienced Ekbom syndrome or delusional parasitosis that is also shared with her daughter. Both were given risperidone with an initial dose of 1 mg/day and sertraline 50mg/day.  
 
Conclusion: We found a rare case of delusional parasitosis presented with shared psychotic disorder among a mother and a daughter. Initiation of psychiatric therapy is quite challenging, as patients often refuse due to stigmatization and their firm belief that instead of psychiatric illness, they actually have a parasitic infection. A multidisciplinary approach and strong patient-therapist relationship are a necessity in treating this type of patient.
Concordance of Epidermal Growth Factor Receptor Mutation from Tissue Biopsy and Plasma Circulating Tumor DNA in Treatment-Naïve Lung Adenocarcinoma Patients
Authors: Soeroso Noni Novisari , Taufik Hendra , Tarigan Setia Putra , Mutiara Erna
Published: August 2022

Background: Prevalence of Epidermal Growth Factor Receptor (EGFR) mutation in ctDNA in treatment-naïve individuals are not well established in Indonesia. In recent years, ctDNA as a specific and sensitive blood-based biomarker had been developed to detect the mutation. The study was done to understand the concordance and acceptance levels of ctDNA in detecting the gene mutation in lung adenocarcinoma patients.   
Methods: This study used cross-sectional approach with purposive sampling design in 100 treatment-naïve NSCLC, adenocarcinoma patients. Samples were obtained from bronchoscopy, and blood, which were examined to detect the mutation in formalin-fixed, paraffin-embedded (FFPE) specimens or plasma samples using QIAampDNA Micro Kit. Mutation was calculated by droplet digital PCR (ddPCR).  
Results: A hundred subjects with primary tumor tissue samples were compared with the plasma samples and mutation was detected in 20 patients (20.0%), 12 (12.0%) on exon 19, 7 (7.0%) on exon 21 and 1 (1.0%) on both exon 19 and 21. Within the plasma samples, mutation was found in 15 patients (15%) with mutation on exon 19 and 21 in 12 (12.0%) and 3 (3.0%) patients, respectively.  Within the two samples, concordance of EGFR mutation was 83.0% (83/100, P<0.001; correlation index: 0.42). Assuming presence of mutation as the benchmark, the accuracy of mutation presence in plasma DNA was 60.0% (9/15). Kappa test showed a weak agreement between the mutation in tissues and plasma, with a coefficient of 0.414 (95% CI).  
Conclusion: Tissue biopsy was still considered as the main option to detect EGFR mutation in lung cancer. More research on ctDNA as the standardized tools to detect the mutation are required.
Spray-dryer feed preparation: Enzymatic degradation of glucomannan for iron nanoencapsulation
Authors: Wardhani Dyah H , Cahyono Heri , Ulya Hana N , Kumoro Andri C , Anam Khairul , Vázquez José Antonio
Published: August 2022

Viscosity of glucomannan (GM) needs to be modified to support its application for spray drying encapsulation. The purpose of this study was to investigate degradation of GM using cellulase that fulfills viscosity in a spray-dryer specification. This hydrolyzed glucomannan (HGM) was subsequently spray-dried for encapsulating iron. Lower initial GM concentrations (0.5–1%) reached approximately 0.30 Pa·s which allowed to be spray-dried after 100 min degradation using 10 mg/L cellulase. Meanwhile, viscosity of 1.5% and 1.7% GM did not reach the target viscosity even after 300 min. The nth-order model was the most suitable model which fitted viscosity reduction of ≤1.5% initial GM concentration (coefficient of determination, R2 > 0.98), whereas the Mahammad model fitted the viscosity reduction of 1.75% initial GM concentration (R2 = 0.99). Hydrolysis decreased the degree of polymerization and surface tension but increased the antioxidant activities of HGM. Smaller molecules of the polysaccharides were released after hydrolysis. Particles of encapsulated iron using HGM were more hydrophilic than those using GM. The iron tended to have a higher release rate at pH 6.8 than at pH 1.2 in the first 40 min. Hence, the HGM showed its ability to act as a control release matrix for the iron that needs a protection in the acid environment, and delivers them to the neutral site for absorption. Nanoencapsulation using 0.35 Pa·s viscosity of HGM was able to have 84% yield, 96.41% encapsulation efficiency, and 10% moisture content. Particle size of the iron encapsulation was dominated by 341.99 nm-diameter. This study shows a potency to use an appropriate viscosity of HGM which not only allows to be spray-dried but also support in protecting the iron as aimed by encapsulation the iron. Performances and properties of this matrix on encapsulating other bioactive compounds become future study.
Extended Prudnikov sum
Authors: Reynolds Robert , Stauffer Allan
Published: August 2022

A Prudnikov sum is extended to derive the finite sum of the Hurwitz-Lerch Zeta function in terms of the Hurwitz-Lerch Zeta function. This formula is then used to evaluate a number trigonometric sums and products in terms of other trigonometric functions. These sums and products are taken over positive integers which can be simplified in certain circumstances. The results obtained include generalizations of linear combinations of the Hurwitz-Lerch Zeta functions and involving powers of 2 evaluated in terms of sums of Hurwitz-Lerch Zeta functions. Some of these derivations are in the form of a new recurrence identity and finite products of trigonometric functions.
New exact solitary wave solutions for fractional model
Authors: Ali Ayyaz , Ullah Zafar , Waheed Irfan , Junjua Moin-ud-Din , Saleem Muhammad Mohsen , Atta Gulnaz , Karim Maimoona , Qayyum Ather
Published: August 2022

This manuscript involves the new exact solitary wave solutions of fractional reaction-diffusion model using the exp $ \mathrm{(-\ }\varphi \left(\eta \right) \mathrm{)} $-expansion method. The spatial model of fractional form is applied in modeling super-diffusive systems in the field of engineering, biology, physics (neutron diffusion theory), ecology, finance, and chemistry. The findings of miscellaneous studies showed that presented method is efficient for exploring new exact solutions to solve the complexities arising in mathematical physics and applied sciences. The new solutions which are obtained in the form of the rational, exponential, hyperbolic and trigonometric functions have a wide range in physics and engineering fields. Several results would be obtained under various parameters which shows good agreement with the previous published results of different papers. The proposed method can be extended to solve further problems arising in the engineering fields. My main contribution is programming and comparisons.
A novel cuproptosis-related lncRNA prognostic signature for predicting treatment and immune environment of head and neck squamous cell carcinoma
Authors: Huan Changxiang , Gao Jiaxin
Published: August 2022

Head and neck squamous cell carcinoma (HNSCC) is an urgent public health issue due to its poor prognosis and resistance to anti-cancer agents. However, the role of cuproptosis, a newly identified form cell death, in applications of HNSCC is still not a known. In this study, single-cell RNA sequencing data was used to explore cuproptosis-related gene expression in the tumour microenvironment. A prognostic model was constructed based on the cuproptosis-related lncRNA. Various methods were performed to predict the overall survival (OS) of different risk score patients and explore difference in enrichment function and pathways between the risk score patients. Finally, a series of immunogenomic landscape analyses were performed and evaluated the immune function, immune infiltration and sensitivity to chemotherapeutic agents. Cancer cell cluster expressed the essential cuproptosis-related gene. As the risk score increased of HNSCC patients, a significant decrease in survival status and time occurred for patients in the high-risk score patient. The AUC for predicting 1-, 3-, and 5-years OS were 0.679, 0.713 and 0.656, indicating that the model regarded as an independent prognostic signature in comparison with the clinical-pathological characteristics. As a results of GO, the immune function and immune infiltration of different risk score patients were assessed, revealing significant differences in T cell function and abundance of different types of T cells. Low-risk score patients are relatively insensitive to chemotherapy agents such as docetaxel and cisplatin, and easily resistant to immunotherapy. A cuproptosis-related lncRNA prognostic model was constructed to predict OS of HNSCC patients and provided the newly therapeutic strategies.
“You Don’t Belong in Nashville!”: Politics, Country Music, and the Reception of Robert Altman’s Nashville
Authors: Blim Dan
Published: August 2022

Robert Altman’s film Nashville (1975) generated a prodigious amount of press commentary following its release. Early on, critics praised the film, but a disappointing box office led many to assume a split between big-city liberal audiences and small-town conservative audiences. Subsequent press coverage connected this divide to both the film’s politics and its use and portrayal of country music, as political pundits, music critics, country music stars, and general audiences weighed in. This essay situates the reception of the film within a shifting country music industry, which was growing increasingly aligned with the Republican Party and increasingly suspicious of new artists. Altman’s overtly liberal political opinions, and his unusual decision to have the cast, along with music supervisor Richard Baskin—novices to country music—compose the songs, alienated him from the Nashville country music industry. Janet Staiger’s theorization of “talk” provides a compelling framework, as the film served as a flashpoint to argue political truths about the nation post-Watergate and to define country music’s evolving authenticity in a commercializing marketplace.
Prince Csaba, Lead Your People Once More: Hungarian Nationalist Rock and Performance of Place in Szekler Land
Authors: Vansteenberg Jessica
Published: August 2022

EMI Tábor (Transylvanian Hungarian Youth Camp) took place in Szekler Land, a majority-Hungarian region in Transylvania that has been a part of Romania since 1920, and an object of nostalgic gaze from Hungary ever since. This nostalgia takes its most radical form in nemzeti (nationalist) rock bands, which are featured at the camp among other evening performances of rock music. This article underscores the importance of the Szekler Land and people in Hungarian nationalist projects, which often use Szeklers as an idealized representation of the nation. EMI Tábor is one place where a reification of Szekler Land takes place, based on historical and mythical connections. By applying a theoretical framework of nationalism and participatory music to performances by two nemzeti rock bands at the camp, I demonstrate how nationalist rock works as a vehicle for populist mobilization, and how Szekler Land is essential to a past that furthers the Hungarian state’s articulation of an identity positioned between East and West in the post-socialist landscape.
Publier Spinoza dans la France du XIXe siècle
Authors: Moreau Pierre-François
Published: August 2022

Deux traductions presque complètes des œuvres de Spinoza sont publiées dans la France du XIXe siècle. Leurs choix philosophiques réfractent les conflits intellectuels de l’époque : au spiritualisme cousinien de Saisset s’oppose la lecture matérialiste et républicaine de Prat.
Foucault et la phronesis : les cas à l’épreuve de la singularité
Authors: Burns Raphaëlle
Published: August 2022

Cet article propose de retracer dans l’œuvre de Foucault la présence d’un engagement critique discret mais continu avec la catégorie aristotélicienne de la phronesis. Au cours des années 1970, Foucault consacre ses recherches à de nombreuses instances de la techné, savoir pratique proche mais distinct de la phronesis. S’il ne mentionne pratiquement pas cette dernière, nous montrerons cependant que ce non-dit est tout sauf un impensé. C’est par un travail de et sur la phronesis que Foucault pensera la complexité des savoirs pratiques et négociera la distinction entre sa propre méthode, dite « généalogique », et les méthodes qu’il prend pour objet. Nous verrons que cette distinction s’articule autour d’un second doublet, celui du cas et de la singularité – une distinction qui prend tout son sens lorsqu’elle est passée au crible de la triade aristotélicienne du savoir : épistémè, techné et phronesis. Nous verrons que la notion foucaldienne de singularité, loin d’être identique au cas particulier, en constitue plutôt le principe de différence interne. En substituant une herméneutique de la singularité à une herméneutique du particulier, Foucault s’autorise à penser une phronesis renouvelée pour les temps présents.
Adaptive Organizational Technology Approaches to Public Health and Hospital Supply Chains
Authors: Burrell Darrell Norman
Published: August 2022

COVID-19 has made supply chain and logistics risk management a significant aspect of healthcare organizations strategic focus area in 2022 and beyond in the United States. It is essential to consider how medical equipment, medicines, and supplies can save lives but only if they can reach those in need quickly and when most needed. Pandemic-induced disruptions in public health and hospital supply chains have created a need for more responsive and adaptive leadership and organizational practices. This study uses a qualitative research approach to explore the healthcare supply chain and logistics management best practices and innovations in the post-COVID-19 onset world.
A Learning Vector Particle Swarm Algorithm Incorporating Sparrow for UAV Path Planning
Authors: Hu Chunan , Deng Mingjie , Zhu Donglin
Published: August 2022

UAV path planning has become a research hotspot in the current era. In order to make UAV plan the route reasonably in the real environment, this paper proposes a learning vector particle swarm optimization algorithm (slpso) based on sparrow, which uses vector decomposition of individual position to control the safety in the path; Firstly, the elite secondary reverse learning strategy is used to increase the distribution of the population; Then, the discoverer phase of sparrow search algorithm is introduced to update the optimal location of particle swarm optimization algorithm and enhance the population diversity. When the algorithm comes to a standstill, a one-dimensional learning strategy is used to improve the subsequent optimization means to help the algorithm jump out of the local optimization. Through the path planning experiments of the two models and Wilcoxon rank sum test, it can be seen that slpso has better effect than other algorithms in terms of path planning and convergence speed, and the route planned in complex environment is more secure and stable.
Effect of Temperature on Desulphurization of Liquid Iron Using Basic Oxygen Furnace Slag
Authors: Nguyen Cao Son , Hien Tran Thi Thu , Bui Anh Hoa
Published: August 2022

High amount of basic oxygen furnace (BOF) slag in steelmaking process is a big challenge, therefore, recycling of the slag have been extensively concerned by not only steelmakers but also researchers. One of the promising methods is to use the slag as a flux in the pretreatment process because the basicity of slag is high and it contains high amount of MgO and CaO. This study examines recycling ability of the BOF slag as a part of the flux adding to the pretreatment process. In the experiment procedure, the flux was combination of the slag (59 mass%), CaO (32 mass%) and SiO2 (9 mass%). The flux and the iron sample were put into the crucible, and then set up in the resistance furnace. The experiments were carried out at different temperatures of 1450, 1500 and 1550 °C with holding time of 15 minutes. The results shown that the S content in the iron significantly decreased in all cases of temperatures. S content in the iron in the pretreatment process reduced from the initial value to 0.007 mass% at the temperature of 1450 °C. However, at temperature of 1550 °C, the S content in the iron was 0.012 mass%. Besides, Si content in the iron reduced with increasing temperature; Si content in the iron significantly decreased from initial value of 2.67 mass% to 0.05 and 0.06 mass% once the temperatures were 1500 and 1550 °C, respectively. Additionally, it was indicated that Fe content in the slag after reaction dropped from the initial value of 6.20 mass% to 0.62 mass% at the temperature of 1550 °C.
Laser Energies Effects on Physical Properties of CuO2 Nano-Structures
Authors: Hekmat Wasan A. , Numan Najwan , Alsultany Forat Hamzah , Hashim Uda
Published: August 2022

A single-step of pulsed laser deposition method was used to manufacture (Cu2O) cuprous oxide nanothin films on Silicone substrates at low growing temperature in this study. The effects of three parameters of pulsed laser energies (800-1200 mJ) was used to explored in order to maximize the structural and morphological quality. (XRD) X-ray diffraction, Scanning electron microscopy with field emission (FESEM), and Atomic force microscopy were used to evaluate the effects of laser pulsed energies on the characteristics of Cu2O nanofilms (FESEM). When compared to a crystalline silicon surface, the results of AFM show a higher possibility of better absorption and hence lower reflection.
Characterizing the Properties of 70Si-30Ca Bioglass-Magnesia Composite as Hard Tissue Replacement Bio-Materials
Authors: Sabree Israa K. , Mahdi Ola Saleh , Shaker Fatima , Ibrahim Mariam
Published: August 2022

There are many requirements for biomaterials used in the applications of bone tissue engineering, besides their biocompatibility, they should exhibit acceptable mechanical properties to mimic bone properties. Many research areas in bioactive materials for bone tissue engineering focused on producing new bioactive glass and ceramic compositions containing a trace of inorganic elements (such as Mg, Sr, Cu, Zn) to combine the mechanical properties and bioactivity. In the present study bioglass-MgO composite material has been used to produce Diopside (CaMgSi2O6) by the sintering process. The compact samples were made from a mixture powder of (7, 15)wt% MgO and binary bioglass 70Si-30Ca sintered at 1100 ᵒC for 2 hr. The XRD results confirmed the presence of diopside and wollastonite CaSiO3 in the case of using 7wt.% MgO while the structure was completely diopside at 15 Wt.% MgO. Physical properties, compressive strength, and hardness were investigated, as well as biodegradation behavior and bioactivity in human saliva were inspected. The results confirmed improving the mechanical properties along with increasing MgO as well as proved the ability to form hydroxyapatite on the surface when exposed to human saliva. These findings demonstrated the positive role of MgO in the mechanical properties of 70Si-30Ca bioactive glass besides producing diopside as a good candidate for hard tissue engineering.
Effect of the Introduction of a Staircase Defect on the Behavior of the Induced Electronic State in a MQWs Structure
Authors: Baidri Abdelkader , Elamri Fatima Zahra , Falyouni Farid , Bria Driss
Published: August 2022

This work investigates the behavior of the electronic states in ZnO/ Zn1-xMgxO MQWs induced by a staircase-like defect layer bounded by two substrates of the same type (ZnO). We use the interface response theory to calculate the different physical properties of the system. First, westudied a material staircase defect containing three material defects, such where the concentration depends on an increasing step noted P and a parameter X0 which does not exceed 0.35, so that the materials remain crystallized in the same structure. We found that the increase of these parameters induces an augmentation in the potential energy, leading to shifts of the electronic states to higher energies. In the second part, we studied the effect of introducing a geo-material defect with the step P=0.05 and X0=0 as optimal values, and the thickness of the staircase defect layer depends on an increment step noted S. We found that the variation of S influences the number of states that appear in the gap, which gives the possibility to improve the electron transport without using higher energy.Finally, we try to find several staircase defect configurations used in different structures. We found that inside the case of symmetric defect permutation, the position of the defect does not influence the behavior of the electronic states. Still, in the case of antisymmetric permutation, the position of thedefect has an influence on the behavior of the electronic states.
Numerical Simulation of Viscosity Effects on Carbon Steel 90° Elbow Erosion due to Sand-Liquid Flow
Authors: Khan Rehan , Ya Hamdan , Azad Alam Mohammad , Azeem Mohammad , Ahmed Tauseef , Rameez Muhammad , Niazi Usama
Published: August 2022

Elbow pipes are important pipeline components in hydrocarbon transportation systems, and they were prone to erosive wear by the impact of abrasive particles. A discrete phase modeling (DPM) and numerical simulation of the liquid-sand transportation process was carried out focused on the investigation into the influence of carrier fluid viscosity on erosion distribution of carbon steel 90° elbows. The accuracy of the predicted results was validated by comparison with experimental data. CFD simulations have been carried out by combining DPM to predict the erosion rate and particle impaction regions in carbon steel 90° elbow with a diameter of 50.8 mm. The fluid viscosity is set for 1cP, 5cP, and 15 cP with an inlet velocity of 8 m/s, and the size of sand particles is 200 μm. While the maximum erosion rates enhance with an increase in fluid viscosity, the location of maximum particle impaction has been specified to be adjacent to the outlet for 1 cP and 5 cP carrier fluid viscosity. It is also found that increasing the viscosity does not considerably alter the average erosion rate. Moreover, the increase in carrier fluid viscosity with the same flow velocity influences maximum erosion rate and yields 1.45 times higher erosion rates at 15 cP compared to 5cP and 1cP. This is mainly due to severe sand impaction at the side of the elbow wall.
Inorganic Nanocarriers: Surface Functionalization, Delivery Utility for Natural Therapeutics - A Review
Authors: Rubaka Clarence , Gathirwa Jeremiah Waweru , Malebo Hamisi M. , Swai Hulda , Hilonga Askwar
Published: August 2022

Inorganic nanocarriers for a decade have increased interest in nanotechnology research platform as versatile drug delivery materials. The utility of the inorganic nanocarriers for delivery of therapeutic agents is attributed to their unique properties such as magnetic, photocatalytic nature and the ability to exhibit surface functionalization. Herein, we review the surface functionalization and delivery utility for natural therapeutics exhibited by inorganic nanocarriers mostly focusing on their magnetic, photocatalytic and the plasmonic properties. The review also highlights the influence of electronic property of inorganic surface on functionalization of ligand based natural therapeutic agents. Improvement of stability and therapeutic potential by formation of nanocomposites are detailed. Furthermore, we suggest improvement strategies for stability and toxicity reduction of inorganic nanoparticles that would potentially make them useful for clinical application as therapeutic delivery tools for treatment of various diseases.
Fabrication of Solar Cell Based on Copper Oxide Nanostructures Deposited Using Reactive Pulsed Laser Deposition
Authors: Alhasan Sarmad Fawzi Hamza , Abduljabbar May A. , Alshaikhli Zahraa S. , Fakhri Makram A. , Parmin Nor Azizah
Published: August 2022

The deposition of copper oxide utilizing a pulsed laser deposition technique employing a reactive pulsed laser as a deposition technique is the subject of this study. The wavelength of the pulsed lase used are 1064 nm, the pulse duration is 10 ns, the laser energy of 1000 mj with different substrate temperatures (200, 3300, and 400 oC). The influence of the substrate tampering on the morphological, structural, Photolumencence, and the electrical, and attributes of the fabricated solar cell was recorded and studied using a high purity cupper target and deposited on porous silicon substrates. When compared to a crystalline silicon surface, the results of AFM show a higher possibility of better absorption and hence lower reflection. The presented results revealed the properties of the fabricated solar cell as well as a noticeable improvement in the solar cell's efficiency, whether copper deposition was used or not. The deposited films at 1064 nm were monoclinic structures with a preference for the (111) direction, according to X-ray diffraction (XRD) examination. SEM were used to study the production of nanostructures on the substrate's surface, which led to the formation of small-sized and nanostructured films.
Contribution to the Microstructural Study of a Composite Material Based on Carbon Fibers for Use in Orthopedic Prostheses
Authors: Menail Younès , Alimi Latifa , Boudiaf Sofiane , Metrane Noureddine
Published: August 2022

The use of a carbon fiber composite material to make external prostheses in the form of a femoral socket was the subject of this laboratory study. According to the prior bibliographical studies, this material adapts well to this type of prosthesis. The objective of this research is to study its microscopic structure, in order to verify the good wetting of the fibers by the resin, the good cohesion and molding by infusion. The morphological study of the facies of the parallelepiped-shaped specimens was carried out after cuts perpendicular to the axis of the fiber strands, parallel according to the width and thickness of the specimen. This study was carried out using a scanning electron microscope (SEM), in order to determine, thanks to the typical microstructure of the composite, the various degradations, which appear as a result of the effect of static tension. The laminate used is based on three layers of carbon taffeta fabric and an orthocrylic resin. Tensile tests have been carried out at a speed of 1mm/min with a Zwick/Roell machine with a load cell of 50 kN. This speed was chosen to allow a comparative study with glass fiber specimens, which have been used previously for the production of prostheses, before those made of carbon. The microscopic study allowed to identify the four types of degradation; Matrix fracture, which manifested itself as fault lines, in preferred directions of different sizes. This contributed to interlaminar delamination. The decohesion that contributes to delamination in a different way from that of matrix breakage is visible at different levels. Interlaminar delamination results from the combined effect of matrix breakdown and decohesion and manifests itself as uneven strata. Fiber breakage was manifested by shearing. This study allowed to observing a degradation of the material imposed by static traction. As for the material used in orthopaedics, it has retained good cohesion and meets the requirements of prostheses, despite the defects detected by the microscopic study.
Field Investigations, Simulation and Numerical Analysis of the Suitability of Aluminium Opening Design in the Residential Sector Inmauritius
Authors: Jankee Punyagandhaa , Gooroochurn Mahendra , Bhoodoo Devin
Published: August 2022

The use of aluminium as material of choice in the manufacture of window and door openings in Mauritius has escalated significantly in recent years. This has given rise to a considerable number of small-and medium-sized companies operating in the aluminium fabrication sector. The main aim of this study was to identify and investigate the common problems reported with aluminium openings and to assess the structural resistance, water-tightness and safety of the openings. A survey was carried out among local aluminium importers and fabrication companies to gather information about the different profiles and grades of aluminium commonly used for exterior window and door applications in the residential sector. A questionnaire was designed and circulated to clients of aluminium fenestration products. This helped to identify the most common problems encountered with aluminium openings. Site visits were also conducted which enabled the investigation of some common problems identified such as water ingress and rigidity of moving parts. The structural loading of openings was assessed using finite element analysis using SolidWorks. Models of openings of different sizes and corresponding to typical opening designs used locally were created and a uniform pressure was applied on the frames. This uniform pressure was derived from a wind speed of 280 km/h – the maximum wind speed used for design calculations for buildings in Mauritius. The resulting deflections were analysed and compared to the maximum permissible deflections – which were calculated using the guidelines of North American Fenestration Standard (NAFS-11). Results showed that the maximum deflections for frames sizes exceeding a span of 1.5 m, exceeded the maximum allowable values, and necessitated the use of more rigid profiles. Deflections observed in the triple frame design were also higher than those in the double frame. These observations point out to the need of selecting the right profiles for different sized applications to ensure that openings do not incur significant deflections when subjected to wind loads, which would be encountered during severe cyclonic conditions in the island.