bluuebunny/crossref_metadata_2025 huggingface dataset:
Airbnb Versus Hotel Guests: Proenvironmental Behaviors, Place Attachment, and Environmental Concern
Authors: Zhang Xingyi , Lee Sojung
Published: June 2024

The Airbnb business plays a significant role in connecting visitors to the local community and promoting the protection of the local environment. However, little research has focused on the proenvironmental behaviors (PEBs) of Airbnb guests. This study aims to investigate the differences
in PEBs between hotel guests and Airbnb guests by examining a conceptual model that incorporates place attachment, environmental concern, and PEBs. An online survey involving 254 hotel guests and 259 Airbnb guests was conducted. The findings revealed that place attachment significantly predicted
visitors’ environmental concern and PEBs. The results of the mediation analysis further demonstrated that environmental concern played a significant role as a mediator between place attachment and PEBs. Additionally, the invariance test indicated that place dependence had a stronger
impact on environmental concerns among Airbnb guests than hotel guests. These findings highlight the distinct roles of place attachment dimensions in shaping PEBs between the two groups.
Evaluation of the operation scheduling application (SIJO) in an effort to reduce the number of cancellation of operations at Dr. Mohammad Hoesin Hospital Palembang
Authors: Masdahlena  , Aulia Widyastuti
Published: June 2024

The high rate of surgical cancellation has an impact on the low hospital performance assessment. Based on the results of the first semester achievement of 8.75% with a score of 0.5, it shows that it is far from the target achievement < 1%. This study aims to evaluate the application of the SIJO application in an effort to reduce the cancellation rate at Dr. Mohammad Hoesin Palembang Hospital using mixed methods with a quantitative research design using cross-sectional and qualitative research design using Miles and Huberman. The results of quantitative research showed that there was a significant relationship between the number of cancelled operations with laboratory results (COVID-19) (p-value 0.0001); did not get anesthesiologist approval (p-value 0.0001); ICU room availability (p-value 0.017); and blood availability (p-value 0.0001), and there was an insignificant relationship between the number of cancelled operations and the unavailability of pharmaceutical equipment (p-value 0.227). From the results of qualitative analysis conducted by in-depth interviews with research respondents, it is known that the Operation Scheduling Application (SIJO) is useful in the regularity of scheduling operations, effective in reducing the number of canceled operations. The most common obstacles encountered in using the SIJO application are swab results that sometimes do not appear automatically which have an impact on the operation scheduling process, the passwords of all users are the same so that misuse of SIJO accounts can occur and the slow RSMH internet network.
Fábchich József Pindarosa
Authors: Imre Flóra
Published: June 2024

This study is an introduction to the work of József Fábchich. Fábchich started translating Greek poems in their original metres around the end of the 18th century. The only work he published is a volume that appeared in 1804, comprising the Odes of Pindar and a few pieces by Aeolic lyric poets. This article analyses this volume, arguing that Fábchich’s work is rather paradoxical from numerous perspectives. Firstly, he keeps the original metres and he seems to have read the secondary literature available at the time on Pindar, but in the end, his metrical practice is based on his own particular ideas. Secondly, he wishes to contribute to the development of the Hungarian language with his translations, but it seems that the texts he produced were hard to read even for his contemporaries. The study concludes that Fábchich was an thought-provoking and colourful character of this phase of the history of translation into Hungarian, but his oeuvre and his influence does not bear comparison with more successful contemporaries like Benedek Virág.
Antiviral Activity of Cytovir®-3 Against Human Rotavirus Infection Agent in vitro
Authors: Faizuloev E. B. , Leneva I. A. , Smirnov V. S. , Smirnova D. I. , Gracheva A. V. , Korchevaya E. R. , Khokhlova D. M. , Kudryavtseva T. A. , Petlenko S. V. , Zaplutanov V. A.
Published: June 2024

Introduction. Rotavirus infection causes more than 250 million episodes of acute gastroenteritis annually, of which approximately 130,000 cases in children under 5 years of age are fatal. In this regard, the search for drugs for the treatment of rotavirus infection seems extremely relevant.

The aim of the research was to evaluate the antiviral activity of Cytovir®-3 against human rotavirus on a cellular infection model.

Material and methods. The objects of the study were a mixture of active ingredients and individual components, identical in composition and ratio, contained in Cytovir®-3. The study was carried out using a monkey kidney cell culture MA-104 and a laboratory strain of human group A rotavirus — 568, genotype G3P. Cultural, virological, molecular biological and statistical methods were used during the study.

Results and discussion. Analysis of the survival of MA-104 cells in the presence of Cytovir®-3 showed that in the concentration range from 100 to 200 µg/ml, the drug reproducibly exhibited antiviral activity, which was expressed in increased cell survival compared to the viral control. Cytovir®-3 in a non-toxic concentration of 150 µg/ml suppressed the reproduction of rotavirus by 1.0-2.0 lg СC₅₀/ml with various schemes of introduction into cell culture at all periods of observation, which was accompanied by a significant decrease in the concentration of viral RNA and a cytoprotective effect.
Study of Antibiotic Resistance of Bacillus Bacteria Isolated from the International Space Station and a Hospital Laboratory
Authors: Yenikeyev R. R. , Zakharchuk L. M.
Published: June 2024

Background. To date, there is little data on the clinical characteristics of Bacillus bacteria found in clean rooms and aseptic facilities.

The aim of the study was to identify and determine the resistance of Bacillus strains isolated from the International Space Station and medical laboratory to clinically significant antibiotics.

Methods. Isolates were identified using 16S rRNA gene analysis, MALDI-TOF, and whole-genome sequencing. Antibiotic sensitivity was assessed using the disk diffusion method.

Results. Seven Bacillus strains out of 13 showed resistance to imipenem, and each of B. cereus LR2HG21, HSA01, HSA03, and HSA12 showed resistance to imipenem, ciprofloxacin, levofloxacin, and norfloxacin. Whole-genome sequencing of B. cereus LR2HG21, HSA01, HSA03, HSA12 and B. safensis SE192, resistant to imipenem and meropenem, showed that resistance to them is provided by the TEM-116 gene. In addition to TEM-116, the resistance of B. cereus LR2HG21 to imipenem and meropenem, and B. cereus HSA01 and HSA03 to imipenem, is provided by the BcI and/or BcII genes. Resistance to erythromycin in B. subtilis SE15 and B. subtilis SE171 is encoded by the mphK gene.

Conclusion. Resistance to a particular antibiotic in different Bacillus strains can be achieved by one or more mechanisms simultaneously.
Molybdomenite-P21/c, Polymorphous with Molybdomenite and the Natural Analogue of Synthetic α-PbSe4+O3, from the El Dragón Mine, Potosí, Bolivia
Authors: Zhang Jingnan , Yang Hexiong , Gibbs Ronald B.
Published: June 2024

A polymorph of PbSe4+O3, designated as molybdomenite-P21/c, has been discovered from the El Dragón mine, Potosí Department, Bolivia. It occurs as thin-bladed crystals. Associated minerals are Co-bearing krut’aite–penroseite, chalcomenite, and dolomite. Molybdomenite- P21/c is pale yellow in transmitted light and has a greasy luster. It is brittle and has a Mohs hardness of 3. No cleavage was observed. The calculated density is 7.034 g/cm3. An electron microprobe analysis yielded an empirical formula (based on 3 O apfu) of Pb1.00Se1.00O3.

Molybdomenite-P21/c is the natural counterpart of synthetic α-PbSe4+O3, which is dimorphous with grandfathered P21/m molybdomenite (or β-PbSe4+O3). It is monoclinic with space group P21/c and unit-cell parameters a = 9.154(8), b = 8.071(6), c = 8.780(7) Å, β = 103.15(8) °, and V = 631.6(6) Å3. The crystal structure of molybdomenite-P21/c consists of two symmetrically distinct Pb (Pb1 and Pb2), two Se (Se1 an Se2), and six O atoms. Each Se4+ cation is bonded to three O atoms, forming a typical (Se4+O3)2− trigonal pyramid. Both Pb1 and Pb2 atoms are coordinated by nine O atoms. Each [PbO9] polyhedron is linked to six (SeO3)2− pyramids, three by sharing edges and three by sharing corners. The [PbO9] polyhedra are connected to one another through sharing edges and by (SeO3)2− groups, giving rise to a complex three-dimensional net system. Topologically, the crystal structure of molybdomenite-P21/c is identical to that of molybdomenite. Raman spectroscopic measurements reveal that there is only one strong peak centered at 790 cm−1, attributable to the Se4+–O symmetric stretching vibrations within the (SeO3)2− groups, for molybdomenite, whereas there are two such strong peaks, one at 788 cm−1 and the other at 804 cm−1, for molybdomenite-P21/c.
Perancangan Buku Artealogic: The Synergy of ART, CREATIVITY, and LOGIC in Branding Sebagai Solusi dan Panduan untuk Mengatasi Tantangan Generasi Z Dalam Mengembangkan Strategi Branding di Era Modern
Authors: Sutedjo Meilisa
Published: June 2024

Penelitian ini bertujuan untuk merancang strategi branding Artealogic sekaligus
memberikan solusi untuk Generasi Z dalam menghadapipermasalahandan tantangan strategi
branding di era modern. Artealogic, sebagaiagensi branding inovatif, muncul sebagaisolusi
untuk memenuhikebutuhan branding Generasi Z, yang dihadapkan padaberbagaitantangan
seperti stigma negatif dan kurangnya kesadaran terhadap dampak sosial. Salah satu
permasalahan utama adalah kurangnya pendekatan media yang efektif dalam mengatasi
tantangan Generasi Z terhadapstrategi branding.Dalam upaya mengatasi hal ini, Artealogic
merancang buku edukasi berjudul "Artealogic: The Synergy of ART, CREATIVITY, and
LOGIC in Branding." Buku inibertujuan untuk mengembangkan aktivasi merek dengan
pendekatan humanistik, menyampaikan edukasi seputar branding, dan memfasilitasi
pemahaman dengan visual menarik, ilustrasi, serta elemen interaktif dan mini game sesuai
dengan karakteristik Generasi Z terhadap strategi branding. Harapannya, buku ini bukan
hanya menjawab permasalahan Generasi Z terhadapstrategi branding, tetapi jugamenjadi
media promosi efektifuntukagensi branding Artealogic.
Punica granatum Bioactive Compounds-Loaded Chitosan Nanoparticles Exhibit Potent Antihyperglycemic Effect in Alloxan-Induced Diabetic Mice
Authors: Chalghaf Manel , Trifi Mounir , Chirchi Abdelhamid , Miled Khaled , Hayouni* El Akrem
Published: June 2024

In the current study, alloxan-induced diabetic mice model was used to assess the antihyperglycemic effects of Chitosan Nanoparticles (CSNP) loaded with (Punica granatum methanol extract-PG) bioactive compounds. Analysis of P. granatum extract revealed significant concentrations of various classes of polyphenols. In particular, the total polyphenols content is noted at 289.6 ± 5.1 mg/g, while flavonoids and anthocyanins exhibited concentrations of 53.7 ± 0.8 mg/g and 34.8 ± 0.4 mg/g, respectively. Chitosan nanoparticles were prepared by ionic gelation technique using TPP as crosslinking agent. Their spectroscopic characterization showed a good stability, high encapsulation efficiency and the bioactive molecule-loaded CNPs were well-dispersed with homogeneous distribution in the nanosolutions. In vivo experiments showed that when compared to the diabetic control group, diabetic mice treated with CSPG-CNP (100 mg/kg bw) displayed a significant decrease in their mean fasting blood glucose levels. Moreover, hepatic and kidneys histopathological examination showed clear improvements in hepatic alterations in animals treated with CSPG-CNP compared to diabetic control group. Indeed, hepatic cells regained normal size, hepatic steatosis decreased, and the number of inflammatory cells was drastically reduced, suggesting effectiveness of this combination in improving diabetes-induced hepatic lesions. Moreover, mice of CSPG-CNP group showed significant improvements in renal alterations with signs of renal tissue repair. Indeed, damage to Bowman's capsule, glomeruli, and renal tubules were improved, returning to normal renal histology.
Prebiotic Fucoidan Potentially Improves Gut Microbiota and Metabolism in Long-Cared Elderly People with Malnutrition
Authors: Liu* Lin , Zheng Zhijun , Qin Huanlong
Published: June 2024

The gut-microbiota-targeted prebiotic intervention has been a hot topic in the study of health modulation. To examine the effect of fucoidan supplementation on the health of long-cared elderly subjects (88years ± 3.41) with malnutrition (MNA-SF score ≤ 7), an eight-week randomized, single-blind clinical trial was carried out in a community hospital. The subjects were divided into a test group (TG, n = 45), which received the fucoidan supplementation (1g/d) and a control group (CG, n = 20). Preliminary data on metagenomes, plasma metabolomes, prealbumin, twelve cytokines, and clinical records from six people were analyzed. The results showed that with prebiotic intervention, prealbumin, a sensitive nutrition marker slightly increased. Furthermore, in the test group, there were 42 significantly enriched gut microbial species (t-test, p < 0.05), including multiple beneficial bacteria (Bifidobacterium breve, Roseburia hominis, and Lactobacillus acidipiscis), which positively correlated with Medium-Chain Fatty Acid (MCFA)-associated carnitines (octanoylcarnitine and decanoylcarnitine), and chenodeoxycholic acid. The defecation and neuropsychological activities of the participants in the test group also improved slightly. The preliminary data suggests that fucoidan has the potential to improve metabolism, gut function, and nutrition in elderly people by changing the gut microbiota and enriching beneficial bacteria. A larger sample size analysis is needed for a deeper understanding of the effects and mechanism.
On the Sensitivity of the Potential Evapotranspiration of Egypt to Different Initial Conditions of the Soil Moisture Using a High-resolution Regional Climate Model
Authors: A Anwar* Samy
Published: June 2024

The present study investigated the sensitivity of the Potential Evapotranspiration (PET) of Egypt to different initial conditions of soil moisture using a high-resolution Regional Climate Model (RegCM4). To address this issue, two 32-year simulations were conducted from 1979 to 2010. The first two years were considered as spin-up. In the first simulation, the RegCM4 was initialized with the satellite product ESACCI (ESA) and the RegCM4 was initialized with version 3 of the Century Reanalysis Product (CEN) in the second simulation. The PET was computed using a calibrated version of the Hargreaves–Samani (HS) equation. In the two simulations, the RegCM4 was configured with the Community Land Model version 4.5 (CLM45). Era-Interim Reanalysis of 1.5 degrees (EIN15) was used to downscale the RegCM4 with 25 km grid spacing. The ERA5-based product (ERA5) was used as the observational dataset. The results showed that switching between ESA and CEN didn’t induce a notable influence on the daily maximum air temperature. Regarding the daily minimum air temperature, the CEN outperforms the ESA concerning the Climate Research Unit (CRU). In comparison with the ERA5 product, the CEN was able to reduce the PET negative bias (0.8 to 1.8 mm day-1) better than the one noted in the ESA (0.8 to 3 mm day-1). On a point scale, the performance of the ESA/CEN varies with the location and month. Such a point was confirmed using different statistical metrics such as mean bias, Pearson correlation coefficient and standard deviation ratio. In conclusion, the CEN can be recommended to initialize the RegCM4 to ensure a reliable estimation of the PET of Egypt either in the present climate or under different future scenarios.
Serological Detection of Toxoplasma Gondii in Animals and Human in Baghdad Province, Iraq
Authors: Shatti Ali A.
Published: June 2024

This study aims to investigate the prevalence of Toxoplasma gondii in field animals (cattle and sheep) and their owners at various areas in Baghdad province (Iraq) during September (2023) and February (2024). Also, it aims to identify the role of cat in transmission of infection to humans and animals. A total of 222 venous blood samples including 84 humans and 138 animals were collected under aseptic conditions into free-anticoagulant glass tubes. In addition, a total of 112 fecal cat samples were collected from different areas in Baghdad city into plastic containers to be examined by the flotation method. The results showed that 84 blood samples from animal owners detected the infection rate were 36.90%. In addition, there is a relationship between infection and age. The study shows that the highest age for infection is 26-30 years, and the percentage was 66.66%. also, the study included examining 138 blood samples from animals divided into 68 sheep and 70 cows’ infection parasite rate was also 41.30%, and through examining the collection of 120 samples of soil from different areas in the city of Baghdad, the percentage of infection with T. gondii parasite reached 32.50%, addition to the infection rate in cats was 50% by examining 112 stool samples collected from different areas in the same city. This study reported the increasing seroprevalence of T. gondii using different samples. The reason for this increase may be due to poor health conditions, the large number of stray cats, the accumulation of dirt, the low degree of health education, and ignorance of the sources of infection for the disease and the attempt to avoid them, as it was noted through the study that a large number of women raise cats in their homes. They do not know that cats are the source of the disease.
Expert System for Diagnosing Pests on Oil Palm Seed Plants Using the Certainty Factor Method
Authors: Fikri Muhammad Ihsanul , Nasution Yusuf Ramadhan
Published: June 2024

Indonesia is one of the largest countries producing palm oil. The problems that often arise in oil palm seedlings are pest attacks. Oil palm seedlings diagnosed with pest attacks can be characterized by existing symptoms. Based on the phenomena that occurred, researchers created a system for diagnosing pests in oil palm seed plants, so that they could diagnose quickly and find solutions to pest problems in oil palm seed plants. This research uses a development method called waterfall. The design of this research is to plan an Expert System for Diagnosing Pests on Oil Palm Seed Plants Using the Certainty Factor Method. Based on the tests that have been carried out, the results are that the community or farmers on oil palm plantations can easily diagnose pests on oil palm seed plants in real time as long as they are connected to the internet to help diagnose pests on oil palm seed plants. Testing of the expert system showed a high level of accuracy in diagnosing pests on oil palm seedlings. The level of suitability accuracy reached more than 90%. With this expert system, oil palm plantation management can be improved significantly. Early detection of pest attacks will reduce the losses incurred and allow more effective preventive measures to be taken.
Penerapan Principal Component Analysis untuk Reduksi Variabel pada Algoritma K-Means Clustering
Authors: Rosyada Istina Alya , Utari Dina Tri
Published: June 2024

K-Means clustering is a widely used clustering algorithm. However, it has the disadvantage that the performance of clustering data decreases if the variables of the processed data are immense. The complex variables problem in K-Means can be overcome by combining the Principal Component Analysis (PCA) variable reduction method. This study uses seven indicator variables for the welfare of the people of West Java Province in 2021 to measure the welfare level of districts/cities. The results of the analysis obtained two principal components based on eigenvalues. Clustering from cluster analysis with the K-Means with variable reduction using PCA formed the three best clusters where the number of members of each cluster consisted of 12, 8, and 7 districts/cities.
Implementasi Regresi Logistik Biner Stratifikasi Pada Pemodelan Stunting Untuk Anak Balita Di Kabupaten Gorontalo
Authors: Ningsih Setia , Madonsa Muhammad Rifai , Mahmud Sri Lestari , Djakaria Ismail , Nasib Salmun K
Published: June 2024

Stunting is a condition where toddlers fail to grow due to chronic malnutrition in the first 1000 days of life (HPK). Therefore, stunting cases in Gorontalo Province, especially in Gorontalo Regency, are among the cases that need to be addressed as soon as possible. The data used is secondary data from each Puskesmas in Gorontalo Regency, to see the factors that have a significant effect on the incidence of stunting in Gorontalo Regency in urban and rural areas using the stratified binary logistic regression method. In this study, the independent variables used were Gender, Birth Weight, Birth Height, Toddler Age and Nutritional Status. The test results using the stratified binary logistic regression method show that for urban strata there are 3 significant variables, namely Birth Weight, Age of Toddlers and Nutritional Status, then for rural strata there are 2 significant variables, namely Age of Toddlers and Nutritional Status. Wald test results show that there are differences between urban and rural areas.
Online Shopping Item Cost Analysis through Web Scraping and Nodejs
Authors: Nagendra K V , Ussenaiah M.
Published: June 2024

The swift expansion of online shopping platforms has resulted in a wide variety of products being available for purchase online, necessitating the development of effective tools for comparing prices. This initiative suggests a solution that makes use of web scraping methods and the Node.js framework to gather and examine the prices of products from various online stores. The system will make use of web scraping tools to pull out important pricing data from selected websites, and Node.js will be used for the processing and comparison of this data. The goal of this project is to create an easy-to-use interface that allows customers to input details about a product and get detailed price comparisons from various online sellers. Through this project, we aim to equip consumers with useful information to make well-informed buying choices in the competitive online shopping market.
Exploring Healthcare Utilization Events towards PalliativeTherapy in Sickle Cell Anemia
Authors: T.Neema Nsolo. , Dil Subba .
Published: June 2024

Sickle cell anaemia, a hereditary blood disorder characterized by abnormal haemoglobin, poses significant challenges globally, particularly in resource- limited settings. Despite advances in treatment, access to care and resources remains a persistent issue. This study aims to comprehensively understand the healthcare utilisation events experienced by sickle cell anaemic patients undergoing palliative therapy. This study aimed to assess and evaluate healthcare utilization events related to palliative therapy and satisfaction in sickle cell anaemic patients. The specific objectives were to identify healthcare utilization events which was patient satisfaction and to examine factors influencing these events, including demographic characteristics, disease severity, and access to healthcare services. In this study, a cross-sectional design was utilized to investigate healthcare utilization events and factors influencing these events among individuals with sickle cell anaemia receiving palliative therapy who were selectively chosen through simple random sampling, ensuring a representative selection from the target population. Data analysis was conducted using SPSS version 25.0 software, expressing continuous variables as means and categorical variables as frequencies and percentages. The descriptive analysis of 209 participants highlighted a predominance of females (60.3%) over males (39.7%), with the majority falling in the 18-27 age group (94.3%) and holding a Bachelor's degree (77.5%). Unemployment was prevalent (72.7%), and most participants reported satisfaction with sickle cell treatment (91.4%). In both univariate and multivariate analyses, gender, educational level, employment status, disease severity, and access to healthcare emerged as significant factors affecting patient satisfaction. These findings ultimately emphasize the complex interplay of demographic, socioeconomic, and healthcare access factors towards shaping patient satisfaction with sickle cell treatment modalities.
Historical Review of Copper-based Ancient Ayurvedic Medicine: Tamra Bhasma
Authors: C. Nille Guruprasad , S. Nille Omkar , K. Chaudhary Anand
Published: June 2024

Copper has been widely used for various purposes since the Vedic periods. It plays a vital role in human physiology and has been used to treat different ailments in its mineral forms. Tamra Bhasma, the oldest medicinal form of copper, has been used in Ayurveda for centuries. In the traditional practice of Ayurvedic pharmaceutics, copper is converted into its safe and effective nanomedicine form, Tamra Bhasma. This literature review provides a comprehensive analysis of copper (Tamra), covering its traditional uses, pharmaceutical processes, therapeutic applications, pharmacological activities, safety profiles, and reports on the structural identification of Tamra Bhasma. This examination extends from the Vedic and Samhita periods to recent developments.
Detection of Faint Sources by the UltraViolet Imaging Telescope Onboard AstroSat Using Poisson Distribution of Background
Authors: Ananthamoorthy B. , Bhattacharya Debbijoy , Sreekumar P. , B Swathi
Published: June 2024

We present an improved approach for constructing the UV source catalogs using observations from the UltraViolet Imaging Telescope (UVIT) onboard AstroSat, by considering the Poisson distribution of the UV background. The method is tested extensively using fields that are not crowded, the Small Magellanic Cloud and M31 (Field 13). The results are compared with previous studies that used UVIT observations. This approach is successful in detecting fainter sources and produces a large number of new sources (∼15% –92% more). Most of the newly discovered UV sources fall in the faint end of the source distribution (m ≳ 22). The counterparts at other wavelengths are identified for most sources. This approach is more efficient for source detection and provides an opportunity to explore new classes of UV sources.
Mass, Density, and Radius of Asteroid (16) Psyche from High-precision Astrometry
Authors: Farnocchia Davide , Fuentes-Muñoz Oscar , Park Ryan S. , Baer James , Chesley Steven R.
Published: June 2024

We characterize asteroid (16) Psyche using high-precision astrometry, including the recent Gaia Focused Product Release. The gravitational perturbations of Psyche on other asteroids can be observable in the case of mutual encounters. Using a least squares approach, we estimate the mass of Psyche by fitting astrometric data of asteroids that come within 0.05 au of Psyche. Combining the resulting individual estimates, we find GM = 1.601 ± 0.017 km3 s−2. This result is robust against variations in the orbit determination setup and specific data set used. The volume and equivalent radius of Psyche are currently constrained by occultations and radar and optical imaging to (5.75 ± 0.19) × 106 km3 and

111

−
0.5

+
2

km, respectively. Given the volume of Psyche, our mass estimate corresponds to a bulk density of 4172 ± 145 kg m−3, which is compatible with an M-type taxonomic classification. Finally, the phase-dependent photocenter offset is visible in the residuals of Gaia astrometric observations of Psyche. This effect is consistent with the size of Psyche.
Fast and Slow Crystallization-driven Convection in White Dwarfs
Authors: Castro-Tapia Matias , Cumming Andrew , Fuentes J. R.
Published: June 2024

We investigate crystallization-driven convection in carbon–oxygen white dwarfs. We present a version of the mixing length theory that self-consistently includes the effects of thermal diffusion and composition gradients, and provides solutions for the convective parameters based on the local heat and composition fluxes. Our formulation smoothly transitions between the regimes of fast adiabatic convection at large Peclet number and slow thermohaline convection at low Peclet number. It also allows for both thermally driven and compositionally driven convection, including correctly accounting for the direction of heat transport for compositionally driven convection in a thermally stable background. We use the MESA stellar evolution code to calculate the composition and heat fluxes during crystallization in different models of cooling white dwarfs, and determine the regime of convection and the convective velocity. We find that convection occurs in the regime of slow thermohaline convection during most of the cooling history of the star. However, at the onset of crystallization, the composition flux is large enough to drive fast overturning convection for a short time (∼10 Myr). We estimate the convective velocities in both of these phases and discuss the implications for explaining observed white dwarf magnetic fields with crystallization-driven dynamos.
Electron Cyclotron Maser Emission and the Brightest Solar Radio Bursts
Authors: White Stephen M. , Shimojo Masumi , Iwai Kazumasa , Bastian Timothy S. , Fleishman Gregory D. , Gary Dale E. , Magdalenic Jasmina , Vourlidas Angelos
Published: June 2024

This paper investigates the incidence of coherent emission in solar radio bursts, using a revised catalog of 3800 solar radio bursts observed by the Nobeyama Radio Polarimeters from 1988 to 2023. We focus on the 1.0 and 2.0 GHz data, where radio fluxes of order 1010 Jy have been observed. Previous work has suggested that these bursts are due to electron cyclotron maser (ECM) emission. In at least one well-studied case, the bright emission at 1 GHz consists of narrowband spikes of millisecond duration. Coherent emission at 1 GHz can be distinguished from traditional incoherent gyrosynchrotron flare emission based on the radio spectrum: Gyrosynchrotron emission at 1 GHz usually has a spectrum rising with frequency, so bursts in which 1 GHz is stronger than higher-frequency measurements are unlikely to be incoherent gyrosynchrotron. Based on this criterion, it is found that for bursts exceeding 100 sfu, three-quarters of all bursts at 1 GHz and half of all 2 GHz bursts have a dominant coherent emission component, assumed to be ECM. The majority of the very bright bursts at 1 GHz are highly circularly polarized, consistent with a coherent emission mechanism, but not always 100% polarized. The frequency range from 1 to 2 GHz is heavily utilized for terrestrial applications, and these results are relevant for understanding the extreme flux levels that may impact such applications. Further, they provide a reference for comparison with the study of ECM emission from other stars and potentially exoplanets.
Twenty years of ecosystem services research in Bulgaria: lessons learned and future directions from a geographical perspective
Authors: Nedkov Stoyan , Stoycheva Vanya , Prodanova Hristina , Ananiev Ivaylo , Yordanov Yordan
Published: June 2024

The ecosystem services (ES) concept has established itself in recent years as the predominant paradigm for framing environmental research and policy-making. The EU Biodiversity Strategy to 2020 with its task for member countries to map and assess the state of ecosystems and their services has contributed vastly to the development of the ES studies in the European countries. Bulgaria was among the countries that made substantial progress in its implementation and the contribution of the geographers was of vital importance. This paper aims to provide an overview and analysis of the ES research in Bulgaria focusing on the contributions of the geographers and the spatial aspects of the studies. The information on the ES research was performed through a literature review by collecting all available published works that address the main objectives of the study. To systematize and characterize the content of the reviewed papers, a special database with a standard nomenclature was constructed. The findings from the review allowed us to identify both achievements and research gaps in the ES studies conducted by Bulgarian geographers. This enabled us to define the main research priorities of the coming years which can trace the future directions of ES research in the country. They include the development of the spatial aspects in the methodological frameworks for mapping and assessment of ES, better use of GIS-based tools for mapping ES alongside models’ integration, and improvement of the publication's quality and increase of the papers published in highly rated indexed journals.
Curating an online checklist for Erica L. (Ericaceae): contributing to and supporting global conservation through the World Flora Online
Authors: Elliott Alan C. , Bester Stoffel P. , Klopper Ronell R. , Nelson E. Charles , Pirie Michael D.
Published: June 2024

To support the work of the Global Conservation Consortium for Erica and update the Erica checklist in the World Flora Online (WFO), we have curated the taxonomic backbone in the WFO by expanding it to include updated nomenclatural information from the International Plant Name Index, missing names present in the World Checklist of Vascular Plants (WCVP), the Botanical Database of Southern Africa (BODATSA), and from the “International register of heather names” database, a data source not readily available online. The result is the most robust database of Erica names to date, including 851 species, 111 subspecies, 244 varieties, and 2787 synonyms, which is a reliable reference for initiatives such as the Erica identification aid, conservation prioritisation, and gap analyses. We disambiguate common orthographic variants within the database and present an overview of these. We also comment on the correct orthography of E. heleophila Guthrie & Bolus and E. michellensis Dulfer and the validity of E. tegetiformis E.G.H.Oliv. are discussed, and the use of E. adunca Benth. for a South African species rather than E. triceps Link, which is here regarded as insufficiently known and of uncertain application, is clarified.
Impatiens karenensis (Balsaminaceae), a new tiny flowered species from Myanmar
Authors: Paing Chit Soe , Suksathan Piyakaset , Ruchisansakun Saroj
Published: June 2024

Impatiens karenensis (I. sect. Semeiocardium) from Kayin State, Myanmar is described and illustrated here. It is most similar to I. micromeris, but differs in having lower petals with outer margins strongly undulate in the lower half (vs. lower petals entire), apex of upper petals acute to obtuse (vs. apex rounded), short stout spur, ± as long as the depth of lower sepal, ca. 2.5 mm long (vs. long attenuate spur, twice as long as the depth of lower sepal, ca. 5 mm long). Its conservation status is also assessed as Critically Endangered.
Olive pomace bioactives for functional foods and cosmetics
Authors: Tsoupras Alexandros , Panagopoulou Eirini , Kyzas George Z.
Published: June 2024

The reuse and valorization of olive mill by-products, among others, is getting attention in the food and drugs-cosmetics sectors, due the recovery of their essential bioactive compounds in order to incorporate them as ingredients in functional foods, cosmetics, and pharmaceuticals. Olive pomace represents olive mill's main residue (by-product), and it is a sustainable and of low-cost renewable source of several bioactive compounds, while its valorization can reduce its environmental impact and make it an additional economic resource for food industries in a circular economy design. In this article, the natural bio-functional compounds of olive pomace with antioxidant and anti-inflammatory bioactivities are thoroughly reviewed. The incorporation of such bioactives as ingredients in functional foods and cosmetics is also discussed in detail. The limitations of such applications are also presented. Thus, promising techniques, such as encapsulation, and their applications for stabilizing and masking undesirable characteristics of such compounds, are also exhibited. The so far promising in vitro outcomes seem to support further in vivo assessment in trials-based setting.
Designing profitable supply chains for lithium-ion battery recycling in the United States
Authors: Alipanah Majid , Usman Sunday Oluwadamilola , Saha Apurba Kumar , Jin Hongyue
Published: June 2024

Recycling spent lithium-ion batteries (LIBs) has attracted lots of attention recently, due to the increasing demand for critical materials contained in LIBs, putting high pressure on their geological reserves. We evaluated the potential of bioleaching technology as a sustainable solution for recycling spent LIBs to help inform decision-making processes for stakeholders involved in LIB recycling supply chains. A supply chain model was developed to include required upstream processes with the objective of maximizing economic feasibility of LIB recycling through the technology. The model has been applied to the U.S. and an optimal supply chain configuration was identified, considering the major factors affecting the economic viability of the technology. The net present value of the supply chain was estimated to be ＄18.4 billion for operating over 10 years, achieving the maximum processing capacity of 900,000 tons of black mass per year. The economic viability of the technology was identified to be highly sensitive to the cost associated with purchasing black mass, which accounted for more than 60% of the total supply chain cost. The breakeven price of black mass was identified as ＄8.7/kg over which the supply chain was not economically sustainable. Additionally, we examined the non-cooperative scenarios where each tier tries to maximize its own profit to demonstrate how the overall profitability of the supply chain changes with different pricing strategies of sortation facilities and acid producers. We estimated that the maximum prices of non-recyclable paper and acid that the supply chain could tolerate were ＄0.89/kg and ＄8.5/kg, respectively, beyond which the supply chain was no longer sustainable.
Two-dimensional double horizon peridynamics for membranes
Authors: Yang Zhenghao , Oterkus Erkan , Oterkus Selda
Published: June 2024

In this study, a two-dimensional "double-horizon peridynamics" formulation was presented for membranes. According to double-horizon peridynamics, each material point has two horizons: inner and outer horizons. This new formulation can reduce the computational time by using larger horizons and smaller inner horizons. To demonstrate the capability of the proposed formulation, various different analytical and numerical solutions were presented for a rectangular plate under different boundary conditions for static and dynamic problems. A comparison of peridynamic and classical solutions was given for different inner and outer horizon size values.
Retos y oportunidades en la preservación digital del patrimonio documental. La experiencia de Repsol
Authors: De Castro Leal Leticia
Published: June 2024

Todas las medidas destinadas a la prevención del deterioro del patrimonio documental y a garantizar el acceso a su contenido a través de los años se engloban dentro del concepto de preservación digital en donde Repsol, compañía multienergética global, muestra su compromiso e interés tras depositar su patrimonio digital en el Arctic World Archive. Este suceso ha sido posible gracias a la novedosa técnica de grabación digital de datos en alta resolución utilizando el formato de carrete de archivo, facilitado por la empresa Piql. En este documento se recoge tanto el marco teórico relativo a la preservación digital y patrimonio documental, además de un análisis de la novedosa tecnología facilitada por Piql, estado inicial del patrimonio documental de Repsol y el proceso llevado a cabo para la consecución de este proyecto.
Poséidon et le pneuma. Le séisme comme signe et remède en Grèce ancienne
Authors: Polignac François de
Published: June 2024

En Grèce ancienne, les séismes semblent relever de deux types d’explication inconciliables : soit comme une manifestation de la colère du dieu Poséidon, soit comme un phénomène purement naturel dû à l’accumulation d’un élément sous terre – l’eau, l’air ou le souffle. Mais cette opposition apparente masque des analogies conceptuelles. L’action de Poséidon n’est pas simplement destructrice. Elle participe à la construction d’un monde habitable en organisant la circulation des eaux. Les théories naturalistes sont fondées sur la même idée que le séisme, tout comme les désordres du corps, reflète un déséquilibre dans la circulation d’un principe primordial. « Croyance » et « science » sont fondées sur les mêmes représentations ; c’est dans le rapport entre cause et effet qu’elles divergent.
Quand se taisent les voix sous les décombres : secousses et émotions dans l’Antiquité tardive
Authors: Debié Muriel
Published: June 2024

Si le bruit du tremblement de terre qui toucha Nicomédie le 24 août 358 est parvenu jusqu’à nous, c’est grâce aux mots de ceux qui l’ont raconté, chacun dans un genre différent : l’historien Ammien Marcellin, le rhéteur Libanios et le poète et théologien Éphrem de Nisibe, rarement mis en parallèle. Aucun des trois n’était présent sur les lieux, mais ils ont chacun essayé de rendre compte des émotions qu’avait suscitées la catastrophe et de provoquer à leur tour les émotions de leur public par le pouvoir de la rhétorique. Ils ont tissé de ténus fils explicatifs pour comprendre les liens entre les dieux (unique des chrétiens ou multiples des religions traditionnelles) et les secousses telluriques et mouvements des eaux.
Tremblement de terre en Islam médiéval : un avertissement ou un signe divin plutôt qu’un phénomène naturel ?
Authors: Ducène Jean-Charles
Published: June 2024

Dès l’émergence de l’islam le tremblement de terre est pris en compte, d’abord comme résultat de la volonté divine, puis sous l’influence des sciences grecques comme effet d’un mécanisme physique profane. Dans le premier cas, comme la nature créée est l’œuvre du Créateur, il n’est pas difficile de concevoir qu’il l’utilise comme instrument, mais pour quoi faire ? Le séisme apparaît ainsi polysémique : il augure, accompagne ou avertit d’un événement à portée universelle, mais il punit aussi des fautes morales. En pratique, l’imaginaire musulman médiéval voit cette intervention divine au travers de deux cosmologies distinctes, mais chacune syncrétique, réunissant des éléments mythiques antérieurs, comme le mont Qāf d’une part, l’ange, le taureau et la baleine d’autre part. Quant à la perspective « mécaniste », elle reprend la théorie aristotélicienne des exhalaisons terrestres pour justifier les secousses du sol par endroits, dans un jeu de poussées et de résistance mû par la chaleur.
Tectonique des mythes. Croyances et théories zoroastriennes sur le tremblement de terre
Authors: Azarnouche Samra
Published: June 2024

Si le séisme est avant tout un acte cosmogonique provoqué par l’intrusion du Mal dans le monde d’Ohrmazd, les récits zoroastriens décrivant le phénomène témoignent d’une remarquable confluence de mythes, de théories mécanistes et d’analogies biologiques. La tradition reflétée par les textes (Bundahišn 21e, Dēnkard III.93 et Dādestān ī Dēnīg 69) l’attribue tantôt au démon Čišmag et à ses acolytes atmosphériques, tantôt au sorcier Frāsyāb, deux figures qui ont aussi en commun d’être associées à la sécheresse. Certains épisodes qui les mettent en scène incluent également une mystérieuse apparition de Spandarmad, la déesse de la terre. Ces éléments indiquent que l’étiologie zoroastrienne des séismes était bien plus complexe et plus narrative que ce que les textes transmis jusqu’à nous donnent à voir.
Le Buddha comme épicentre sismique et comme sismologue
Authors: Eltschinger Vincent
Published: June 2024

Quelque abondants qu’ils soient dans les sources littéraires du bouddhisme indien, les séismes ne s’y laissent jamais réduire ou reconduire à des événements naturels et historiques, mais s’inscrivent dans un horizon « hiérohistorique ». Les tremblements de terre y font signe, célébrant les principaux événements de la biographie d’un (futur) buddha, manifestant les pouvoirs psychiques supérieurs de certains êtres (moines/nonnes, divinités) ou marquant l’approbation de la (déesse) Terre. L’intention salvifique à leur principe explique qu’ils soient perçus, sinon toujours comme agréables, du moins comme n’entraînant ni victimes ni dommages en dépit de leur caractère térébrant. Quoique largement dominante, cette interprétation voisine avec différents usages astrologiques et séismomantiques des tremblements de terre.
Mythologie politique et George-Kreis à Vienne
Authors: Faye Emmanuel
Published: June 2024

Par suite des rapports complexes entre Stefan George et Hugo von Hofmannsthal, le rayonnement à Vienne de la pensée de George et de son Cercle peut apparaître limité. Néanmoins, les auteurs les plus radicalement politiques du George-Kreis, Friedrich Wolters et Kurt Hildebrandt, ont profondément marqué la pensée politique d’Eric Voegelin pendant sa période viennoise, qui s’étend jusqu’à son exil de l’été 1938. Celui-ci a repris à Wolters son aristocratisme politique et sa théorie de la domination et à Hildebrandt sa conception du rôle de l’idée de race dans la formation de la communauté politique et de l’État. Cette étude entend ainsi montrer jusqu’à quel point le « philo-nazisme » de Voegelin dans les années 1930 s’est nourri de conceptions politiques issues des versions les plus radicales du George-Kreis.
Le Mises-Kreis : science sociale et libéralisme
Authors: Fillieule Renaud
Published: June 2024

Le Mises-Kreis fut l’un des cercles de discussion les plus brillants de toute l’histoire des sciences sociales. Il a pris la forme d’un Privatseminar organisé à Vienne par l’économiste de l’école autrichienne Ludwig von Mises, entre 1919 et 1934. Cet article présente le fonctionnement de ce cercle, puis passe en revue ses participants réguliers, et enfin évoque à travers l’œuvre de von Mises quelques-uns des grands thèmes de discussion abordés lors des séances (théorie monétaire, collectivisme, libéralisme, et épistémologie des sciences sociales).
Le Wiener Kreis et le positivisme logique
Authors: Bonnet Christian
Published: June 2024

Le Wiener Kreis est un groupe de scientifiques et de philosophes (parmi lesquels Rudolf Carnap, Otto Neurath, Hans Hahn) qui se réunissent à Vienne, dans l’entre-deux-guerres, autour du philosophe Moritz Schlick. La « conception scientifique du monde » de ces positivistes logiques se caractérise par le refus de l’esprit de système et des questions métaphysiques réputées éternelles, l’attention prêtée aux développements les plus récents de la science et le souci de clarifier les problèmes et les énoncés par l’analyse logique. Si le cercle n’est pas un groupe homogène ou une école, son activité s’organise toutefois autour d’un certain nombre de manifestations et d’institutions (revues, séminaires, congrès, etc.). Mais ce projet vise aussi à mettre la raison au service de la transformation de la société et s’inscrit ainsi clairement dans un contexte politique. L’histoire et la fin du Cercle de Vienne sont étroitement liées à l’histoire de l’Autriche, avec l’assassinat de Schlick en 1936, puis le départ en exil de la plupart des autres membres du Cercle.