bluuebunny/crossref_metadata_2025_split huggingface dataset:
Diverging trends in aerosol sulfate and nitrate measured in the remote North Atlantic in Barbados are attributed to clean air policies, African smoke, and anthropogenic emissions
Authors: Gaston Cassandra J. , Prospero Joseph M. , Foley Kristen , Pye Havala O. T. , Custals Lillian , Blades Edmund , Sealy Peter , Christie James A. 
Published: July 2024

Abstract. Sulfate and nitrate aerosols degrade air quality, modulate radiative forcing and the hydrological cycle, and affect biogeochemical cycles, yet their global cycles are poorly understood. Here, we examined trends in 21 years of aerosol measurements made at Ragged Point, Barbados, the easternmost promontory on the island located in the eastern Caribbean Basin. Though the site has historically been used to characterize African dust transport, here we focused on changes in nitrate and non-sea-salt (nss) sulfate aerosols from 1990–2011. Nitrate aerosol concentrations averaged over the entire period were stable at 0.59 µg m−3 ± 0.04 µg m−3, except for elevated nitrate concentrations in the spring of 2010 and during the summer and fall of 2008 due to the transport of biomass burning emissions from both northern and southern Africa to our site. In contrast, from 1990 to 2000, nss-sulfate decreased 30 % at a rate of 0.023 µg m−3 yr−1, a trend which we attribute to air quality policies enacted in the United States (US) and Europe. From 2000–2011, sulfate gradually increased at a rate of 0.021 µg m−3 yr−1 to pre-1990s levels of 0.90 µg m−3. We used the Community Multiscale Air Quality (CMAQ) model simulations from the EPA's Air QUAlity TimE Series (EQUATES) to better understand the changes in nss-sulfate after 2000. The model simulations estimate that increases in anthropogenic emissions from Africa explain the increase in nss-sulfate observed in Barbados. Our results highlight the need to better constrain emissions from developing countries and to assess their impact on aerosol burdens in remote source regions.
Full-scale spectra of 15-year time series of near-surface horizontal wind speed on the north slope of Mt. Everest
Authors: Han Cunbo , Ma Yaoming , Ma Weiqiang , Sun Fanglin , Zhang Yunshuai , Hu Wei , Xu Hanying , Duan Chunhui , Xi Zhenhua 
Published: July 2024

Abstract. Wind speed spectra analysis is of great importance for understanding boundary layer turbulence characteristics, atmospheric numerical model development, and wind energy assessment. 15-year time series of near-surface horizontal wind data from the national Observation and Research Station for Qomolongma Special Atmospheric Processes and Environmental Changes (QOMS) on the north slope of Mt. Everest has been used to investigate the full-scale wind spectrum in the frequency range from about 10 yr-1 to 5 Hz. The annual average wind speed showed almost no detectable trend from 2006 to 2018 at the QOMS station. Three peaks were identified in the full-scale spectra at the frequencies of 1 yr-1, 1 day-1, and 12 hr-1, respectively. The 12 hr-1 peak is rarely observed at an offshore, coastal, or terrestrial site, and indicates the unique local circulations at the QOMS station. The spectral density was the highest on the low-frequency side of the diurnal peak and in the microscale frequency range (f ≥ 1×10-3 Hz) in winter, indicating frequent synoptic weather events and vigorous turbulent intensity generated by shear due to strong wind during winter. An obvious spectral gap around the frequency of 4.5×10-4 Hz was observed in the composite seasonal and daily spectrum in winter, while the spectral gap disappeared in summer. The linear composition of microscale and mesoscale wind spectra also held, and the gap region of the horizontal wind spectrum was modeled very well at the QOMS site.
Using deep learning to integrate paleoclimate and global biogeochemistry over the Phanerozoic Eon
Authors: Zheng Dongyu , Merdith Andrew S. , Goddéris Yves , Donnadieu Yannick , Gurung Khushboo , Mills Benjamin J. W. 
Published: July 2024

Abstract. Databases of 3D paleoclimate model simulations are increasingly used within global biogeochemical models for the Phanerozoic Eon. This improves the accuracy of the surface processes within the biogeochemical models, but the approach is limited by the availability of large numbers of paleoclimate simulations at different pCO2 levels and for different continental configurations. In this paper we apply the Frame Interpolation for Large Motion (FILM) deep learning method to a set of Phanerozoic paleoclimate model simulations to upscale their time resolution from one model run every ∼25 million years to one model run every 1 million years (Myr). Testing the method on a 5 Myr time-resolution set of continental configurations and paleoclimates confirms the accuracy of our approach when reconstructing intermediate frames from configurations separated by up to 40 Myr. We then apply the method to upscale the paleoclimate data structure in the SCION climate-biogeochemical model. The interpolated surface temperature and runoff are reasonable and present a logical progression between the original key frames. When updated to use the high-time-resolution climate data structure, the SCION model predicts climate shifts that were not present in the original model outputs due to its previous use of widely spaced datasets and simple linear interpolation. We conclude that a time resolution of ∼10 Myr in Phanerozoic paleoclimate simulations is likely sufficient for investigating the long-term carbon cycle and that deep learning methods may be critical in attaining this time resolution at reasonable computational expense, as well as for developing new fully continuous methods in which 3D continental processes are able to translate over a moving continental surface in deep time. However, the efficacy of deep learning methods in interpolating runoff data, compared to that of paleogeography and temperature, is diminished by the heterogeneous distribution of runoff. Consequently, interpolated climates must be confirmed by running a paleoclimate model if scientific conclusions are to be based directly on them.
Confidence as a Buffer Against Covid-19 Stigma: Enhancing Employee Engagement Among Recovered Individuals
Authors: Ashraf Fatima 
Published: July 2024

Quality of work life (QWL) is important for individual and organizational success. Post-pandemic times have brought the challenge of declined, yet continued Covid-19 cases among the working Pakistani population. Stigma due to Covid-19 and thus deteriorated QWL in such individuals is plausible. Hence, elucidating factors that enhance the possible damaged quality of work life among Covid-19 stigmatized individuals remains an essential question for managers and practitioners. Drawing on the Social Identity theory, we hypothesize that QWL is damaged in Covid-19 recovered, stigmatized working individuals through deterioration in self-esteem as such individuals are prone to influences from the societal groups that they psychologically identify with. We also argue that self-efficacy buffers this negative effect. Albeit several researches have probed into relations of QWL with stigma-related antecedents and moderation and mediation mechanisms that underlie these effect, but this study investigates self-esteem and self-efficacy as mediator and moderator, respectively, of the Covid-19 related stigma and quality of work life relationship through the lens of the Social Identity Theory. Employing a correlational framework using purposive sampling, we obtained data from 133 working individuals who had been tested positive with Covid-19 in public and private hospitals and health centers of Pakistan during November 2022 – November 2023, had completely recovered and joined their professional lives. Results confirmed study hypotheses, suggesting that stigma related to Covid-19 damages QWL, this relationship is mediated by self-esteem, while self-efficacy buffers the relationship between Covid-19 related stigma and self-esteem. Such individuals and their managers need to collaboratively work in order to reduce effects of this stigma, and undo its damaging effects on self-esteem and QWL. In this regard, boosting self-efficacy plays a supporting role as it acts as a coping mechanism in the inter-play between Covid-19 stigma, self-esteem, and QWL.
L’Instabilité Résidentielle chez les Jeunes LGBTQ2+ : Une Exploration Intersectionnelle Quantitative
Authors: Duford Julie , Blais Martin , Gervais Jesse 
Published: July 2024

Les jeunes lesbiennes, gais, bisexuel·les, trans, queers, bispirituel·les ou autres (LGBTQ2+) vivent davantage d’instabilité résidentielle que les jeunes cishétérosexuel·les. Si ce constat est bien connu, la variation des expériences d’instabilité résidentielle au sein des jeunes LGBTQ2+ reste moins documentée. Cet article présente une démarche intersectionnelle quantitative pour explorer les variations dans le vécu d’instabilité résidentielle auprès d’un échantillon pancanadien en ligne de 2266 jeunes LGBTQ2+ âgé·es de 15 à 29 ans. Les modèles de régression logistique réalisés sur les croisements du groupe racial avec l’identité de genre ou l’orientation sexuelle révèlent que les positions minorisées sur les axes du sexisme, du cissexisme, du monosexisme, du binarisme de genre et du racisme/colonialisme étaient davantage associées à un vécu d’instabilité résidentielle. Ainsi, les jeunes trans autochtones et les jeunes pansexuel·les autochtones étaient les plus susceptibles d’avoir vécu de l’instabilité résidentielle, alors que les hommes cisgenres blancs et les jeunes monosexuel·les blanc·hes l’étaient le moins. Aucun effet d’interaction multiplicative et additive n’a été observé lors de combinaisons d’un groupe racial avec une identité de genre ou une orientation sexuelle, suggérant que les impacts individuels de ces positions sociales sur le vécu d’instabilité résidentielle ont tendance à se cumuler sans toutefois s’influencer mutuellement. Ces résultats comblent une lacune dans les écrits scientifiques et peuvent informer les instances décisionnelles afin de prévenir l’instabilité résidentielle chez les jeunes LGBTQ2+.
La teología moral de Kant: ni ateísmo ni vindicación de la causa de Dios
Authors: Di Sanz Silvia del Luján 
Published: July 2024

En este trabajo sostendremos que, en la obra crítica de Kant, el desplazamiento de la idea de Dios de su tradicional lugar de fundamento, desplazamiento efectuado por las tres Críticas, reubica la función de la idea de Dios en el interior de su filosofía, y justamente, por ello, Kant considera haber logrado que la sombra arrojada por el ateísmo dogmático sobre la metafísica tradicional no alcance a la filosofía crítica. De modo que, el ejercicio crítico de la razón podría considerarse como el antídoto contra el ateísmo, sin embargo, a la vez, no tiene ningún efecto a favor del conocimiento de los designios divinos. El desplazamiento de la idea de Dios hacia la filosofía práctica y su consecuente ubicación en la teología moral vuelve inviable o, también, podríamos decir innecesario, para la filosofía, el proponerse asumir la de defensa de la causa de Dios. Nada de esto es sin problemas.
Deus in nobis: ética sin Transcendencia. Spinoza, Kant y Bonhoeffer
Authors: Espinosa Antón Francisco Javier 
Published: July 2024

El capítulo quiere indicar y explicar que la autonomía es algo esencial en la vida moral, autonomía entendida como la inmanencia en nosotros del principio rector de nuestras acciones nacido de nuestro conocimiento y nuestras reflexiones. Y esto lo hace de la mano de tres pensadores diferentes y distantes en el tiempo, Spinoza, Kant y Bonhoeffer, pero que tienen como denominador común cerrar el paso a las visiones religiosas que quitan la autonomía del hombre al promover una ética basada en la Transcendencia. Hay una cierta continuidad entre los tres: Kant se inspiró en Spinoza y Bonhoeffer en Kant. En los tres hay una ferviente defensa de la autonomía del hombre y una crítica de la religión que intenta invadir y neutralizar esa autonomía: solo sería aceptable una religión que aceptase la autonomía del hombre. Por eso, de alguna manera, en los tres está presente el giro Deus in nobis, que indica que nuestra razón moral es como Dios en nosotros.
MINERAL PARAGENESIS OF EARLY BIOTITE VEINS AT THE KUH-E JANJA Cu-Au PORPHYRY DEPOSIT, SOUTHEASTERN IRAN: IMPORTANCE OF MICROTEXTURAL OBSERVATIONS IN STUDIES CONSTRAINING THE RELATIVE TIMING OF HYPOGENE Cu MINERALIZATION
Authors: Soleymani Majid , Monecke Thomas , James Reynolds T. , Niroomand Shojaeddin 
Published: July 2024

Abstract
Veins consisting primarily of biotite are the earliest stockwork vein type recognized at the Kuh-e Janja Cu-Au porphyry deposit in southeastern Iran. These early biotite veins may contain quartz and minor amounts of sulfide minerals such as chalcopyrite and pyrite. Observations at the hand-specimen scale do not provide reliable constraints on the paragenetic relationships, as the early biotite veins have been repeatedly overprinted during the evolution of the magmatic-hydrothermal system. Microscopic investigations show that the sulfide minerals in the early biotite veins are texturally late, providing evidence that sulfide deposition did not occur at the high temperatures of biotite formation and potassic alteration of the host rocks. Chalcopyrite primarily occurs along hairline fractures that crosscut or refracture the earlier biotite veins. Biotite in contact with the chalcopyrite can be apparently unaltered or is replaced by chlorite, depending on the degree of wall-rock buffering of the magmatic-hydrothermal fluids that caused hypogene Cu mineralization. The findings add to the growing body of evidence that Cu mineralization in this deposit type occurs at temperatures close to the transition from ductile to brittle conditions (&lt;450°C) following a drop in the pressure regime from lithostatic to hydrostatic conditions.
STRATIGRAPHY, PETROLOGY AND FACIES ASSOCIATIONS OF THE QUATERNARY SPIN KAREZ GROUP, HANNA-SPIN KAREZ AREA, QUETTA DISTRICT, PAKISTAN
Authors: Kasi Muhammed Iqbal , Manan Razzaq Abdul , Kassi Akhtar Muhammad , Kasi Aimal Khan , Naseer Muhammed 
Published: July 2024

The Hanna-Spin Karez area which comprises the Quaternary succession of the Spin Karez Group is located adjacent to the junction of Sulaiman and Kirthar Fold-Thrust Belts (Quetta Syntaxes), southwest of the Zarghun Trough in the northwestern Balochistan, Pakistan. The area comprises over 800 m thick conformable succession of the Quaternary age, covering surface area of ~30 km2. The succession has been named as the Spin Karez Group, which are further subdivide from base to top into three distinct lithostratigraphic units as: Hanna Lake Conglomerate, Hanna Red Clays and Spin Karez Conglomerate. The Hanna Lake Conglomerate comprises 200 m thick succession of boulder-pebble conglomerate. The Hanna Red Clays comprise over 500 m thick succession of dominantly red claystone rarely interbedded with siltstone and very fine-grained sandstone. The Spin Karez Conglomerate is composed of over 100 m thick succession of well-stratified and moderately- to well-sorted cobble/pebble conglomerate with occasional sandstone/siltstone lenses. The Triassic to Pliocene age older successions from the region's north and west provided the polymictic conglomerate, boulder to pebble size limestone, sandstone, chert, and conglomerate fragments. The Spin Karez Group comprises 15 types of gravel, sandstone and mudstone facies, which were grouped into 5 facies associations. The facies associations include braided channel deposits (FA-1), sheet-flood deposits (FA-2), floodplain deposits (FA-3), marginal lacustrine deposits (FA-4) and open-water lacustrine deposits (FA-5). The Spin Karez group evolved in three phases: i) Deposition of the Hanna Lake conglomerate started with the proximal and distal braided channel systems in the northern and southern parts of the study area respectively; ii) Deposition of the Hanna Red clays deposited in shallow lake with episodic sub-aerial exposure, providing reddish colour to the mud-dominant facies; iii) The depositional basin, once again, transformed to braided channel system, of the Spin Karez conglomerate, which evolved over the shallow water lake deposits of the Hanna Red clays. The Spin Karez group was mainly controlled by continued subsidence and regional tectonics during the Quaternary period that accommodated the space for the small shallow basin (~30 km2) that stacked depositional systems.
ANALISA PENGARUH KEMIRINGAN SUDUT SCREW EXTRUDER PADA PROSES PEMBUATAN FILAMENT 3D PRINTER PADA MESIN EKSTRUSI SINGLE SCREW
Authors: Rasid Muhammad , Suparjo Suparjo , Tafrant Dodi , Homzah Ozkar F. , Ma’arif Syamsul 
Published: July 2024

ABSTRAK

Penelitian ini bertujuan untuk mengetahui pengaruh kemiringan sudut screw extruder pada hasil pembuatan filament 3d printer menggunakan mesin ekstrusi single screw. Kemiringan sudut screw pada penelitian ini dibuat dengan 5 variasi kemiringan (90º, 10º, 15º, 20º, 25º) dengan dimensi screw yang sama. Pada penelitian ini menggunakan beberapa parameter pada mesin ekstrusi dengan kecepatan ekstrusi 28 rpm, kecepatan penarik 16 rpm, diameter cetakan 2 mm dan temperature heater 180ºC dengan bahan plastic recycle HDPE. Data hasil pengujian dianalisis menggunakan metode regresi linear sederhana. Hasil pengujian mendapatkan nilai diameter filament paling kecil 0.9 mm pada sudut kemiringan screw 0º dan yang paling besar nilai diameter filament yaitu 1.86 mm pada kemiringan sudut screw 25º. Dari data hasil pengujian menunjukkan adanya pengaruh kemiringan sudut helix screw pada proses ekstrusi plastic recycle HDPE, semakin besar sudut kemiringan maka semakin besar diameter filament yang dihasilkan dan dari hasil peengukuran diameter filament dapat disimpulkan semakin besar diameter yang dihasilkan semakin besar nilai outflow yang dihasilkan.

Kata Kunci : Screw, Plastic Recycle HDPE, Sudut Helix, Diameter, Rpm, Temperature, Regresi Linear Sederhana
PERFORMANCE ANALYSIS OF LiVO3-Ion BATTERY WITH CARBON (Ipomoea Aquatica) AS ANODES
Authors: Sucia Arini , Haryati Sri , Syarif Nirwan 
Published: July 2024

This research was conducted by utilizing water spinach which is found in swampy areas as new material for support in battery. Water spinach stems were separated used as carbon precursor. The carbon was prepared through hydrothermal and pyrolysis processes. The battery was constructed using the carbon anode and cathode from LiVO3. The LiVO3 was produced by using hydrothermal process of LiCl, V2O5, and NaOH in 200ºC 30 bar for 16 hours. The performance of the battery was evaluated using cyclic voltammetry and galvanostatic charging – discharging methods on potentiostat. The electrolyte used was LiCl in liquid or gel electrolyte with concentrations of 10%, 20% and 40%, respectively. The binders were used PU and melamine. Material characterization reveal that the carbon has crystaline phase, conductivity and pores which therefore carbon has the capability to be used as anode precursor. The evaluation of battery performance showed that the highest current value was found in battery with 40% LiCl of liquid electrolyte and polyurethabe binder, that is 0.22 A. The highest power 5.36 x W, energy 1.80 x Wh, and capacity ​8.94 x F was found in battery with 40% LiCl of liquid electrolyte with binder PU.. The lowest battery discharge slope 0.0039 was found in 40% LiCl of liquid electrolyte with PU binder. These findings provides an alternative to the use of materials in Lithium ion batteries without compromising the performance of their application.
KAJI EKSPERIMEN MODEL 3D RODA GIGI HELIKS BERBASIS SCRIPT MENGGUNAKAN SOFTWARE AUTODESK FUSION 360
Authors: Setiawan Haris , Pratama Andri , Rina Rina , Diratama Mohammad Yazid 
Published: July 2024

Pemodelan 3D suatu produk adalah salah satu elemen proses yang penting dalam manufaktur. Tujuan dari penelitian ini adalah membuat pemodelan 3D roda gigi heliks berbasis script menggunakan softtware Autodesk Fusion 360 lalu membandingkannya dengan model 3D standar ISO T.E.A nomor part 0518. Metoda penelitian yang digunakan adalah kaji eksperimen. Penelitian dimulai dengan pembuatan script tipe A yang memiliki face tegak lurus dengan bidang XY. Sedangkan script tipe B menggunakan face yang tegak lurus dengan kurva heliksnya (bidang Gambar) menggunakan fitur loft. Jumlah face yang di analsis berjumlah 3,5 dan 7 serta jumlah titik pada spline involute 5, 15 dan 25. Selanjutnya model yang dibuat akan dianalisis dan dibandingkan berdasarkan volume serta geometrinya menggunakan software solidwork dan geomagic terhadap 3D roda gigi heliks standar ISO T.E.A nomor part 0518. Hasil analisis menunjukkan bahwa model script tipe A merupakan model yang paling menyerupai model standar roda gigi heliks ISO T.E.A nomor part 0518 sehingga, script tipe A lebih akurat dari pada script tipe B. Berdasarkan batas toleransi yang ditetapkan, 3D model hasil script tipe A dan B sudah memenuhi standar toleransi umum.

Kata Kunci : Script; Loft; Roda gigi heliks; Common volume; Geometri
Des traces aux signes du temps. Ernst Bloch et l’herméneutique du possible
Authors: Stuckel Alban 
Published: July 2024

La philosophie de l’espérance d’Ernst Bloch réhabilite la notion d’utopie en se déployant comme une herméneutique du possible, c’est-à-dire comme une méthode d’interprétation des signes du possible au sein du réel. À l’appui de cette interprétation, l’article commence par situer l’entreprise de Bloch à la lumière des objections habituellement élevées contre l’utopie et par identifier la fonction de cette méthode herméneutique au sein de la topographie dialectique de l’utopie chez Bloch : elle doit assurer le passage de l’espace public hétérotopique à l’utopie. L’article indique ensuite comment cette herméneutique, fondée sur une ontologie du possible, se déploie comme héritage dialectique des signaux politiques du présent et des œuvres culturelles du passé. Il ne s’agit pas en effet de concevoir ex nihilo quelque avenir désirable, mais d’hériter de ses possibilités. Enfin, l’article montre en quoi ce recours à l’herméneutique suppose une théorie de la signification sous-jacente dont sont esquissées les grandes lignes.
De la concordia à la convenientia : quelques réflexions sur la rhétorique de la concorde à l’époque ostrogothique à partir des Variae de Cassiodore
Authors: Mayo Virgile 
Published: July 2024

Dans l’Italie du vie siècle, les rois ostrogoths recourraient déjà aux outils à leur disposition pour inscrire leur présence dans l’espace public de leur époque et communiquer avec leurs sujets. L’écrit, diffusé et affiché dans les lieux les plus fréquentés, était une des modalités du gouvernement des hommes largement exploitée pour limiter les tensions et appeler à l’unité. Les travaux menés sur l’idéologie à partir des actes de chancellerie conservés dans les Variae de Cassiodore ont mis en évidence la portée de certains mots spécifiques de la parole royale, mais les métaphores et les allégories étaient des procédés rhétoriques tout aussi efficaces, sinon plus, pour exiger la concorde au sein du royaume ostrogothique. Une analyse des images de la concorde dans les Variae de Cassiodore révèle, entre autres choses, un concept clé de l’idéologie des rois goths : l’accordance (convenientia).
Amour et affection dans la vie de Jeanne de Brabant (1322-1406). La construction d’un discours sentimental entre absence d’information et topoï de société
Authors: Rutsaert Camille 
Published: July 2024

Depuis l’apparition de l’histoire des émotions, le rôle et le fonctionnement de l’amour dans la société médiévale ont été les objets de théories de la part d’historiens et de philologues. Toutefois, accéder aux ressentis des individus est plus compliqué. En effet, les sources médiévales abordent peu l’intime, ou souvent d’une manière plus symbolique que réaliste. Comment, dès lors, observer l’amour qui entourait Jeanne de Brabant ? Quelles sources permettent cette analyse ? Après avoir répondu à cette question, l’étude se penchera sur la présence de l’affectio dans deux types de relations de la duchesse : à savoir dans le couple qu’elle formait avec Wenceslas de Luxembourg et dans les rapports avec ses sujets.