bluuebunny/crossref_metadata_2025_split huggingface dataset:
ETHIOPIAN PERSPECTIVES AND SCIENTIFIC EXPLANATIONS OF THE SUN HALO PHENOMENON ON APRIL 7, 2022
Authors: Goshu Belay 
Published: November 2024

The purpose of this study was to analyze the many interpretations and reactions to the sun halo phenomenon reported in Ethiopia on April 7, 2022, with a particular focus on religious perspectives and scientific analysis. The diameter of the sun halo was measured to be 0.092 km, indicating the peculiarity of this atmospheric occurrence. A study among various religious leaders and community members showed that 80% of respondents considered the phenomenon required special prayers or religious rites, suggesting a significant tendency towards spiritual significance. Additionally, 14% of respondents indicated curiosity regarding the event, suggesting a normal human reaction to odd or incomprehensible situations. Meanwhile, 3% of responders mentioned ceremonial offerings or no specific activities to the sun halo. From a technical aspect, picture analysis of the sun halo revealed an initial pixel count of 108,584 with a standard deviation of 43,265 and a noise standard deviation of 0.0962994, resulting in a signal-to-noise ratio (SNR) of 33.744. This study underlines the clarity and prominence of the sun halo in the obtained image. Furthermore, the study analyzed the relationship between the sun halo and atmospheric conditions, revealing a correlation coefficient of 0.49 on Day 7, coinciding with occasional cloud cover and atmospheric disturbances. The correlation coefficient slightly reduced to 0.48 on Day 8, when the sky was clear. These findings show a probable relationship between the presence of atmospheric disturbances and the appearance of the sun halo, offering a detailed explanation of this remarkable natural phenomenon. To understand the underlying atmospheric dynamics and probable seasonal trends, future studies should concentrate on a more thorough analysis of sun halos, combining a bigger dataset of occurrences across diverse geographical regions and climatic conditions. Further research could examine the psychological and cultural effects of celestial phenomena, such as sun halos, on different cultures, offering more insight into how these occurrences affect cultural norms and belief systems.
Keywords: Sun, halo, scientific, people thought, image
Penggunaan Media Sosial dalam Mendukung Kinerja Pemasaran: Evaluasi Dampak Value Co-Creation dan Produktivitas Kerja
Authors: Indriyani Ratih , Renatha Dewi Agnes , Kempa Sesilya 
Published: November 2024

UMKM sebaiknya meningkatkan kinerja pemasaran untuk mendukung strategi bersaingnya. Pada era digital ini pemasaran menggunakan media sosial dapat membantu bisnis meningkatkan kinerja pemasarannya. Penelitian ini bertujuan untuk menguji pengaruh Social media usage terhadap Marketing Performance melalui value co-creation dan Work Productivity pada UMKM. Penelitian ini menggunakan jenis penelitian kuantitatif dengan pendekatan metode survei. Penelitian ini menggunakan menggunakan teknik purposive sampling sebagai tehnik pengambilan sampel. Populasi dari penelitian ini adalah pemilik UMKM di Sidoarjo yang menggunakan media sosial dan sudah beroperasi minimal 1 tahun. Teknik pengolahan data menggunakan software Smart PLS. Hasil penelitian menunjukan bahwa Social media usage memiliki pengaruh signifikan terhadap value co creation dan work productivity. Di sisi lain, value co-creation dan Work Productivity berpengaruh secara signifikan terhadap marketing performance, sedangkan Social media usage tidak berpengaruh signifikan terhadap marketing performance. Implikasi penelitian ini menunjukkan pentingnya optimalisasi strategi media sosial untuk meningkatkan interaksi dengan konsumen serta efisiensi kerja UMKM dalam meningkatkan daya saing dan keberlanjutan usaha. Hasil ini diharapkan dapat memberikan wawasan praktis bagi pelaku UMKM dalam memaksimalkan media sosial sebagai alat pemasaran.
Employment of Au/Co and Au/CoB as materials for anodes in borohydride–hydrogen peroxide fuel cells
Authors: Balčiūnaitė Aldona , Sukackienė Zita , Tamašauskaitė-Tamašiūnaitė Loreta , Santos Diogo Miguel Franco dos , Norkus Eugenijus 
Published: November 2024

Au nanoparticles modified Co and CoB coatings deposited on the Cu surface are studied as anode materials for direct NaBH4–H2O2 fuel cells. The catalysts are prepared via electroless deposition of Co or CoB layers on the Cu surface followed by galvanic displacement of hierarchical Co by Au. The performance of direct borohydride–hydrogen peroxide fuel cells (DBHPFCs) using Au/Co/Cuor Au/CoB/Cu as the anode and Pt as the cathode is studied at different temperatures. A 1 M NaBH4 + 4 M NaOH solution is used as the anolyte and 5 M H2O2 + 1.5 M HCl is used as the catholyte, with a Nafion N117 membrane separating the two compartments. The DBHPFC using Au/Co/Cu and Au/CoB/Cuas the anode catalyst exhibits high electrochemical performance compared to that using Co/Cu and CoB/Cu as the anode catalyst. The highest specific peak power densities of 33.9 kW gAu–1 at 25 °C, at the current density of 150 mA cm–2 and cell voltage of 0.70 V and 58.1 kW gAu–1 at 55 °C, at 240 mA cm–2 and 0.75 V were attained using the Au/CoB/Cu anode with the Au loading of 3.1 µgAu cm–2.
Fluoride and silicon removal from spent glass etching solution by chemical treatment
Authors: Kaušpėdienė Danutė , Ragauskas Romas , Pakštas Vidas , Gefenienė Audronė 
Published: November 2024

The effects of chemical treatment for spent silicon etching solution using a combination of two precipitants, K/NaOH, and calcium salts, have been investigated. The impact of the precipitant dose and the initial and final pH value on fluoride and fluorosilicate removal efficiency has also been evaluated. Fluoride and silicon were removed simultaneously in the form of insoluble (K/Na)2SiF6 using the precipitant K/NaOH at pH 5, while the residual concentration of soluble fluoride was in the range of 0.013 to 0.016 M. According to the XRD and wet-chemical analysis the purity of the K2SiF6 precipitate was 98%. The residual fluoride concentration in the solution was additionally reduced in the form of insoluble CaF2 using the precipitant Ca(NO3)2 with [Ca]:[F] = 1:1 at pH 6.7. The basic ingredients in the precipitate were CaF2 and Ca(NO3)2, while F and Si concentrations in the supernatant were undetectable. The combination of K/NaOH and Ca(NO3)2 makes it the best precipitating agent for fluoride and silicon removal from the spent chemical etching solution and production of precipitates suitable for industrial application.
Gambaran self efficacy pada mahasiswa psikogi UNP kampus V Bukittinggi yang mengalami Low Back Pain
Authors: Nirmala Anggraini  , Primanita Rida Yanna 
Published: November 2024

Low Back Pain (LBP) merupakan salah satu masalah kesehatan yang sering dialami masyarakat. LBP merupakan nyeri punggung bawah bisa menjadi pemicu utama kecacatan yang mempengaruhi kualitas hidup dan kemampuan seseorang. Penelitian yang dilakukan di Polandia tahun 2018, remaja menderita LBP sebanyak 74,4 %. Sebanyak 82,8 % remaja perempuan lebih sering merasakan nyeri daripada remaja laki-laki yang hanya 64,3 %. Di Indonesia tahun 2018, diperkirakan sebanyak 7,6%-37% dan 26,74 % penduduk Indonesia yang berumur 15 tahun ke atas dan yang bekerja mengeluhkan bahwa mereka merasakan nyeri di punggung bawah. Berdasarkan hasil wawancara terdapat mahasiswa yang mengalami LBP namun mahasiswa tersebut tidak mau berusaha untuk menyembuhkan LBP padahal mereka tahu cara mengurangi LBP. Salah satu faktor yang mempengaruhi LBP yaitu self efficacy. Self-efficacy dapat memberikan seseorang kemampuan untuk bertahan hidup dan tangguh dalam menghadapi kesulitan. Metode pada penelitian ini yaitu deskriptif kuantitatif dengan populasi mahasiswa psikologi kampus V UNP. Bertujuan untuk mengetahui gambaran Self-efficacy pada mahasiswa Psikologi Kampus lima Bukittinggi yang menderita Low Back Pain. teknik sampel yang digunakan yaitu non-probability. Hasil penelitian ini yaitu self efficacy pada Mahasiswa Psikologi UNP Kampus V Bukittinggi yang mengalami low back pain berada dalam kategori tinggi dengan persentase 87,5%. Jenis kelamin menjadi salah satu faktor yang mempengaruhi self efficacy, dimana perempuan memiliki self efficacy yang lebih tinggi yaitu 61,54%, dibandingkan laki-laki sebesar 25,96%.
Périnatalités, accouchements et maternités dans Bercer l’enfant manquant : mise en récit et en dialogue des devenirs-mères par le motif de l’enfant manquant, incréé, non né
Authors: Mercier Amandine 
Published: November 2024

Comment incarner les devenirs-mères dans la pluralité et la complexité de ce que cela engage? Quels sont les statuts et états des paroles et des corps qui accompagnent les contingences des devenirs-mères? Quelles en sont les traversées lors de la périnatalité, l’accouchement et la maternité? Autant de questions posées par Valérie Gaudissart, metteure en scène de la compagnie Rêver Tout Haut, dans sa pièce Bercer l’enfant manquant (2021), créée à partir de témoignages de femmes s’exprimant librement sur ce qui est d’ordinaire tu ou nié, comme l’avortement, l’accouchement sous X, la dépression post-partum, la fausse couche, la césarienne, la procréation médicalement assistée ou encore l’adoption, ici traités sous le prisme de l’enfant manquant, idéalisé, non né, incréé, et qu’il s’agit dans cette contribution d’examiner.
L’accouchement au coeur du monde : le care dans la pièce Venir au monde d’Anne-Marie Olivier
Authors: Laforce Esther 
Published: November 2024

Cet article propose une lecture féministe de la pièce Venir au monde (2017) d’Anne-Marie Olivier, qui présente des histoires d’accouchement. Il soutient que la vulnérabilité et l’interdépendance, au fondement de l’éthique du care, sont des caractéristiques des personnages mis en scène. Donner naissance à un enfant se lit comme « une épreuve » (Olivier, citée dans Bouchard, 2017) autour de laquelle se rassemble une communauté à laquelle participent les vivant·es, les mort·es et les mourant·es. Les principes du care éclairent aussi le rôle joué par la poésie comme pratique qui vise à réparer et à adoucir le monde en donnant sens aux expériences douloureuses.
Démêler la relation symbiotique entre la religion et la politique pendant le mandat du premier ministre Abe Shinzō et dans le monde post-Abe1
Authors: Mullins Mark R. 
Published: November 2024

Au cours des cinquante dernières années, le Parti libéral démocrate (PLD) et l’Association des sanctuaires Shinto ont collaboré pour « restaurer » les valeurs et les traditions japonaises qui avaient été mises à mal pendant l’occupation du Japon par les forces alliées. Depuis les années de catastrophe (1995/2011), les membres de la Diète et les premiers ministres du PLD, en particulier le premier ministre Abe Shinzō, ont renforcé leur soutien au programme politique shintoïste visant à restaurer l’éducation patriotique, à promouvoir le sanctuaire de Yasukuni et à réviser la Constitution. Au lendemain de l’assassinat du premier ministre Abe (8 juillet 2022), l’influence de l’Église de l’Unification, une organisation controversée, sur les politiciens du PLD et leurs politiques a été révélée au grand jour et a suscité de nombreuses critiques ainsi qu’un débat public. Cet article fait le point sur ces développements récents et identifie les tensions et les contradictions fondamentales entre les valeurs de base du nationalisme shintoïste, portées par Abe pendant des décennies, et celles promues par l’Église de l’Unification. Les enquêtes et les procédures judiciaires entourant cet incident se poursuivent, de sorte qu’on ne sait pas encore quelles en seront les retombées pour ces deux religions et le milieu politique japonais.
Risk factors and prediction models for recurrent acute ischemic stroke: a retrospective analysis
Authors: Ke Liuhua , Zhang Hongyu , Long Kang , Peng Zheng , Huang Yongjun , Ma Xingxuan , Wu Wanjun 
Published: November 2024

Background
Ischemic stroke is one of the leading causes of disability and death worldwide, with a high risk of recurrence that severely impacts the quality of life of patients. Therefore, identifying and analyzing the risk factors for recurrent ischemic stroke is crucial for the prevention and management of this disease.

Methods
A total of 114 cases of recurrent acute ischemic stroke patients admitted from July 2017 to March 2021 were selected as the observation group, and another 409 cases of initial ischemic stroke patients from the same period as the control group. The clinical data of the observation group and the control group were compared to analyze the risk factors associated with the readmission of ischemic stroke. A single-factor analysis (Model 1), Least Absolute Shrinkage and Selection Operator (LASSO) regression, and machine learning methods (Model 2) were used to screen important variables, and a multi-factor COX Proportional Hazards Model regression stroke recurrence risk prediction model was constructed. The predictive performance of the model was evaluated by the consistency index (C-index).

Results
Multivariate COX regression analysis revealed that history of hypertension (Hazard Ratio [HR] = 2.549; 95% Confidence Interval (CI) [1.503–4.321]; P = 0.001), history of cerebral infarction (HR = 1.709; 95% CI [1.066–2.738]; P = 0.026), cerebral artery stenosis (HR = 0.534; 95% CI [0.306–0.931]; P = 0.027), carotid arteriosclerosis (HR = 1.823; 95% CI [1.137–2.924]; P = 0.013), systolic blood pressure (HR = 0.981; 95% CI [0.971–0.991]; P < 0.0001), red cell distribution width-coefficient of variation (RDW-CV) (HR = 1.251; 95% CI [1.019–1.536]; P = 0.033), mean platelet volume (MPV) (HR = 1.506; 95% CI [1.148–1.976]; P = 0.003), uric acid (UA) (HR = 0.995; 95% CI [0.991–1.000]; P = 0.049) were found significantly associated with acute ischemic stroke. The C-index of the full COX model was 0.777 (0.732~0.821), showing a good discrimination between Model 1 and Model 2.

Conclusions
History of hypertension, history of cerebral infarction, cerebral artery stenosis, carotid atherosclerosis, systolic blood pressure, UA, RDW-CV, and MPV were identified as risk factors for acute ischemic stroke recurrence. The model can be used to predict the recurrence of acute ischemic stroke.
Molecular Detection of Integrons I and II in Some Clinical Isolates from Niger Delta University Teaching Hospital, Okolobiri, Nigeria
Authors: Festa Ndu, Ijeoma , Jack Festus, Nathaniel 
Published: November 2024

Aim: This study aimed at detecting the integron-integrase I and II gene in Gram negative bacteria.
Study Design: Cross-sectional and descriptive study design were utilized in this study.
Place and Duration of Study: Niger Delta University Teaching Hospital Okolobiri and Niger Delta University Molecular Laboratory CHS, Wilberforce Island, Amassoma, between February 2023 and April 2023.
Methodology: This study was specifically carried out on clinical isolates with a population figure obtained from 6 different samples collected from Niger Delta University Teaching Hospital, okolobiri in Bayelsa state. Of 500 different clinical samples, 100 clinical isolates were isolated and identified using Standard Bacteriological methods. Genomic DNA was extracted by boiling method. The Integrons I and II genes were detected using Polymerase Chain Reaction.
Results: Of the 100 isolates used for molecular analysis, the Int I1 gene was detected in 54 isolates of which 8(44.4%) were Escherichia coli,14(63.63%) were Pseudomonas aeruginosa and 14(70%) were Klebsiella oxytoca. IntI2 gene was detected in 78 isolates of which16(88.88%) were Escherichia coli,20(90.90%) was Pseudomonas aeruginosa and 10(50%) were Klebsiella oxytoca. IntI1 and IntI2 genes were detected in 38 isolates of which9(50%) were Escherichia coli,12(54.54%) was Pseudomonas aeruginosa and 6(30%) were Klebsiella oxytoca.
Conclusion: This study showed that there was a high prevalence of class I and II integrons in multi-drug-resistant Gram-negative bacteria, therefore justifying the extent of resistance observed.
Identification of an Esterase Isolated Using Metagenomic Technology which Displays an Unusual Substrate Scope and its Characterisation as an Enantioselective Biocatalyst
Authors: Gavin Declan P. , Murphy Edel J. , Foley Aoife M. , Castilla Ignacio Abreu , Reen F. Jerry , Woods David F. , Collins Stuart G. , O'Gara Fergal , Maguire Anita R. 
Published: February 2019

AbstractEvaluation of an esterase annotated as 26D isolated from a marine metagenomic library is described. Esterase 26D was found to have a unique substrate scope, including synthetic transformations which could not be readily effected in a synthetically useful manner using commercially available enzymes. Esterase 26D was more selective towards substrates which had larger, more sterically demanding substituents (i. e. iso‐propyl or tert‐butyl groups) on the β‐carbon, which is in contrast to previously tested commercially available enzymes which displayed a preference for substrates with sterically less demanding substituents (e.g. methyl group) at the β‐carbon.magnified image
Effect of commercial nasal steroid preparation on bacterial growth
Authors: Cherian Lisa Mary , Cooksley Clare , Richter Katharina , Ramezanpour Mahnaz , Paramasivan Sathish , Wormald Peter‐John , Vreugde Sarah , Psaltis Alkis James 
Published: February 2019

BackgroundTopical budesonide (Pulmicort; AstraZeneca AB, Sodertalje, Sweden) is commonly used in the management of chronic rhinosinusitis (CRS). Although its use is due to its perceived anti‐inflammatory effect, studies have suggested that it may also have antibacterial properties. To make the hydrophobic steroid molecule suitable for topical administration, pharmaceutical excipients are used in commercial steroid formulations. Herein we investigated the antibacterial action of commercial budesonide and its excipients.MethodsPlanktonic and biofilm forms of Staphylococcus aureus and methicillin‐resistant Staphylococcus aureus (MRSA) were treated with Pulmicort or its excipients at clinically relevant concentrations. Bacterial growth was determined by optical density, resazurin assays, colony‐forming unit counts, and Giemsa staining. Minimum inhibitory concentration (MIC) studies assessed excipients’ potentiation of antibiotics. Experiments were conducted in triplicate and results analyzed using one‐way analysis of variance.ResultsThere was significant reduction in planktonic and biofilm growth of S aureus and MRSA on exposure to budesonide (p < 0.0001) and its excipients (p < 0.0001). Excipient ethylene diamine‐tetraactic acid (EDTA) demonstrated an antibacterial property even at the low concentrations used in topical preparations (p < 0.0001). With amoxicillin, excipients exhibited a potential additive/synergistic effect on MIC, whereas erythromycin and aminoglycosides showed an antagonistic action.ConclusionThe commercial product Pulmicort has a direct antibacterial effect on the planktonic and biofilm forms of S aureus and MRSA. This effect is at least in part mediated through the excipient EDTA in the product. Excipients also influenced the antimicrobial activity of antibiotics depending on the bacterial strain and antibiotic tested.
Evaluation of cranial base repair techniques utilizing a novel cadaveric CPAP model
Authors: Chitguppi Chandala , Rimmer Ryan A. , Garcia Hermes G. , Koszewski Ian J. , Fastenberg Judd H. , Nyquist Gurston G. , Rosen Marc R. , Huntley Colin , Rabinowitz Mindy R. , Evans James J. 
Published: February 2019

BackgroundAlthough recent guidelines for obstructive sleep apnea recommend early postoperative use of continuous positive airway pressure (CPAP) after endonasal skull base surgery, the time of initiation of CPAP is unclear. In this study we used a novel, previously validated cadaveric model to analyze the pressures delivered to the cranial base and evaluate the effectiveness of various repair techniques to withstand positive pressure.MethodsSkull base defects were surgically created in 3 fresh human cadaver heads and repaired using 3 commonly used repair techniques: (1) Surgicel™ onlay; (2) dural substitute underlay with dural sealant onlay; and (3) dural substitute underlay with nasoseptal flap onlay with dural sealant. Pressure microsensors were placed in the sphenoid sinus and sella, both proximal and distal to the repair, respectively. The effectiveness of each repair technique against various CPAP pressure settings (5‐20 cm H2O) was analyzed.ResultsApproximately 79%‐95% of positive pressure administered reached the sphenoid sinus. Sellar pressure levels varied significantly across the 3 repair techniques and were lowest after the third technique. “Breach” points (CPAP settings at which sellar repair was violated) were lowest for the first group. All 3 specimens showed a breach after the first repair technique. For the second repair technique, only a single breach was created in 1 specimen at 20 cm H2O. No breaches were created in the third group.ConclusionDifferent skull base repair techniques have varying ability to withstand CPAP. Both second and third repair techniques performed in a nearly similar fashion with regard to their ability to withstand positive pressure ventilation.
Metal‐Catalyzed Sequential Formation of Distant Bonds in Organic Molecules: Palladium‐Catalyzed Hydrosilylation/Cyclization of 1,n‐Dienes by Chain Walking
Authors: Kochi Takuya , Ichinose Kazuya , Shigekane Masayuki , Hamasaki Taro , Kakiuchi Fumitoshi 
Published: February 2019

AbstractSequential formation of distant bonds in organic molecules was achieved for the palladium‐catalyzed hydrosilylation/cyclization of various 1,n‐dienes by chain walking of the metal catalyst. The reaction was applicable to various 1,n‐dienes, including a 1,13‐diene, to form a cyclopentane ring as well as a carbon–silicon bond at a remote site. The use of “nondissociative” chain walking provides a fascinating strategy in organic synthesis to functionalize distant parts of organic molecules, in a particular order, within a catalytic cycle by effectively moving the reactive center from a remote position.
The Intrinsic Mechanochemical Reactivity of Vinyl‐Addition Polynorbornene
Authors: Lee Daniel C. , Kensy Victoria K. , Maroon Christopher R. , Long Brian K. , Boydston Andrew J. 
Published: February 2019

AbstractHerein we report the discovery of the intrinsic mechanochemical reactivity of vinyl‐addition polynorbornene (VA‐PNB), which has strained bicyclic ring repeat units along the polymer backbone. VA‐PNBs with three different side chains were found to undergo ring‐opening olefination upon sonication in dilute solutions. The sonicated polymers exhibited spectroscopic signatures consistent with conversion of the bicyclic norbornane repeat units into the ring‐open isomer typical of polynorbornene made by ring‐opening metathesis polymerization (ROMP‐PNB). Thermal analysis and evaluation of chain‐scission kinetics suggest that sonication of VA‐PNB results in chain segments containing a statistical mixture of vinyl‐added and ROMP‐type repeat units.
Phosphine‐Catalyzed (3+2) Annulation of Isoindigos with Allenes: Enantioselective Formation of Two Vicinal Quaternary Stereogenic Centers
Authors: Chan Wai‐Lun , Tang Xiaodong , Zhang Fuhao , Quek Glenn , Mei Guang‐Jian , Lu Yixin 
Published: February 2019

AbstractConstruction of contiguous all‐carbon quaternary stereogenic centers is a long‐standing challenge in synthetic organic chemistry. In this report, a phosphine‐catalyzed enantioselective (3+2) annulation reaction between allenes and isoindigos, containing either two identical or different oxindole moieties, is introduced as a powerful strategy for the construction of spirocyclic bisindoline alkaloid core structures. The reported reactions feature high chemical yields, excellent enantioselectivities, and very good regioselectivities, and are highly useful for creating structurally challenging bisindoline natural products.