bluuebunny/crossref_metadata_2025_split huggingface dataset:
Polar amplification of orbital-scale climate variability in the early Eocene greenhouse world
Authors: Fokkema Chris D. , Agterhuis Tobias , Gerritsma Danielle , de Goeij Myrthe , Liu Xiaoqing , de Regt Pauline , Rice Addison , Vennema Laurens , Agnini Claudia , Bijl Peter K. , Frieling Joost , Huber Matthew , Peterse Francien , Sluijs Appy 
Published: June 2024

Abstract. Climate variability is typically amplified towards polar regions. The underlying causes, notably albedo and humidity changes, are challenging to accurately quantify with observations or models, thus hampering projections of future polar amplification. Polar amplification reconstructions from the ice-free early Eocene (∼56–48 Ma) can exclude ice albedo effects, but the required tropical temperature records for resolving timescales shorter than multi-million years are lacking. Here, we reconstruct early Eocene tropical sea surface temperature variability by presenting an up to ∼4 kyr resolution biomarker-based temperature record from Ocean Drilling Program (ODP) Site 959, located in the tropical Atlantic Ocean. This record shows warming across multiple orbitally paced carbon cycle perturbations, coeval with high-latitude-derived deep-ocean bottom waters, showing that these events represent transient global warming events (hyperthermals). This implies that orbital forcing caused global temperature variability through carbon cycle feedbacks. Importantly, deep-ocean temperature variability was amplified by a factor of 1.7–2.3 compared to the tropical surface ocean, corroborating available long-term estimates. This implies that fast atmospheric feedback processes controlled meridional temperature gradients on multi-million year, as well as orbital, timescales during the early Eocene. Our combined records have several other implications. First, our amplification factor is somewhat larger than the same metric in fully coupled simulations of the early Eocene (1.1–1.3), suggesting that models slightly underestimate the non-ice-related – notably hydrological – feedbacks that cause polar amplification of climate change. Second, even outside the hyperthermals, we find synchronous eccentricity-forced temperature variability in the tropics and deep ocean that represent global mean sea surface temperature variability of up to 0.7 °C, which requires significant variability in atmospheric pCO2. We hypothesize that the responsible carbon cycle feedbacks that are independent of ice, snow, and frost-related processes might play an important role in Phanerozoic orbital-scale climate variability throughout geological time, including Pleistocene glacial–interglacial climate variability.
A FERROGRAFIA APLICADA NO GERENCIAMENTO DOS MANCAIS DE ROLAMENTOS DE MÁQUINAS ROTATIVAS
Authors: DIAS Vinicius , RIBEIRO Marcos , BOVÉRIO Maria Aparecida , SILVA Dejaime Pereira da , NUNES Richardson Leandro 
Published: June 2024

Os mancais de rolamento são amplamente utilizados como suportes de rotores e eixos em muitos sistemas de máquinas, como motores de combustão, motores elétricos, turbinas e bombas de diversos tamanhos. São projetados de forma simples, altamente eficiente, tem longa vida útil, baixo custo e não falham facilmente. Com base em estratégias de manutenção preventiva, muitas técnicas de monitoramento são desenvolvidas para monitorar mancais de rolamento, tais como a análise de lubrificante, análise de vibração, ruído e análise de emissão acústica. Dentre elas, a Ferrografia é um dos recursos para a análise de óleo, pois, com um sinal de aviso indica a possível tendência de parada de máquina. Nessa perspectiva, esse trabalho pautou-se na revisão da literatura e na pesquisa documental e teve o objetivo de pesquisar a importância da ferrografia para o gerenciamento dos mancais de rolamentos de máquinas rotativas. Os resultados indicam que a ferrografia é uma análise útil e abrangente para tendências de falhas, pois sugere quando se deve realizar a manutenção no equipamento. Pode-se concluir, portanto, que ela é uma técnica laboratorial viável de manutenção preditiva para o monitoramento e diagnóstico de condições de máquinas.
Optimizing Environmental Parameters with Intelligent Systems to Enhance Prawn Survival
Authors: Adnan Alam Khan  
Published: June 2024

This study investigated factors influencing low survival rates of Pacific white shrimp post-larvae (PSL) from hatching to nauplii stage. Particle swarm optimization (PSO) and fuzzy analytic hierarchy process (FAHP) were applied to PSL migration modeling and environmental optimization. PSO simulated nauplii movement towards optimal feeds. FAHP assessed growth based on weighted variables across four ponds. Results demonstrated balancing nutrient diet, temperature, pH, salinity, minerals, and technical pond requirements minimized nauplii distraction and maximized PSL yields. However, birth and mortality imbalances persist, motivating further intelligent optimization to enhance blue economy sustainability and profits. PSO is the only one that can provides the intelligent system about PSL best location, guides about directions, feeds, chemicals and temperature. The proposed system adopts particle PSL characteristics such position, velocity, cost, ideal position, and optimal cost position. The PSL as a particle velocity equation shows the relationship between particle velocity and the best cost of nature. The outcome of the system depicts successful PSL. Additional research is needed to elucidate primary causes of nauplii and PSL mortality during early development.
Outcomes following minimally invasive dorsal cheilectomy for hallux rigidus: A systematic review
Authors: Esser Katherine , Butler James J , Roof Mackenzie , Mercer Nathaniel P , Harrington Michael C , Samsonov Alan P , Rosenbaum Andrew J , Kennedy John G 
Published: June 2024

BACKGROUND
Cheilectomy of the 1st metatarsophalangeal joint (MTPJ) is one of the most common procedures for the management of hallux rigidus. However, there is no consensus regarding outcomes following minimally invasive dorsal cheilectomy (MIDC) for the management of hallux rigidus.
AIM
To evaluate outcomes following MIDC for the management of hallux rigidus.
METHODS
During November 2023, the PubMed, EMBASE and Cochrane Library databases were systematically reviewed to identify clinical studies examining outcomes following MIDC for the management of hallux rigidus.
RESULTS
Six studies were included. In total, 348 patients (370 feet) underwent MIDC for hallux rigidus at a weighted mean follow-up of 37.9 ± 16.5 months. The distribution of patients by Coughlin and Shurna's classification was recorded in 4 studies as follows: I (58 patients, 27.1%), II (112 patients, 52.3%), III (44 patients, 20.6%). Three studies performed an additional 1st MTPJ arthroscopy and debridement following MIDC. Retained intra-articular bone debris was observed in 100% of patients in 1 study. The weighted mean American orthopedic foot and ankle society score improved from a preoperative score of 68.9 ± 3.2 to a postoperative score of 87.1. The complication rate was 8.4%, the most common of which was persistent joint pain and stiffness. Thirty-two failures (8.7%) were observed. Thirty-three secondary procedures (8.9%) were performed at a weighted mean time of 8.6 ± 3.2 months following the index procedure.
CONCLUSION
This systematic review demonstrated improvements in subjective clinical outcomes together with a moderate complication rate following MIDC for the management of hallux rigidus at short-term follow-up. A moderate re-operation rate at short-term follow-up was recorded. The marked heterogeneity between included studies and paucity of high quality comparative studies limits the generation of any robust conclusions.
Zircon Petrochronology of Au-Rich Porphyry and Epithermal Deposits in the Golden Quadrilateral (Apuseni Mountains, Romania)
Authors: Markovic Sava , Brunner Manuel , Müller Lukas , Peytcheva Irena , Guillong Marcel , Chelle-Michou Cyril , Kouzmanov Kalin , Gallhofer Daniela , Heinrich Christoph A. , von Quadt Albrecht 
Published: June 2024

Abstract
The Golden Quadrilateral of the Apuseni Mountains (Romania) represents the richest Au(-Cu-Te) porphyry and epithermal district of Europe and the Western Tethyan metallogenic belt. The Au(-Cu-Te) mineralization is associated with Neogene calc-alkaline magmatism along graben structures growing during the late stages of the Alpine-Carpathian orogeny. We use zircon petrochronology to study the time-space distribution, sources, composition, and timescales of the Au(-Cu-Te)-mineralizing magmatism and explore its link to regional tectonics. Our own and published U-Pb zircon ages document ore-forming magmatic activity between ~13.61 and 7.24 Ma. In combination with available paleomagnetic data, the new zircon ages corroborate the hypothesis that the magmatism in the Golden Quadrilateral evolved in a tectonic environment dominated by major (up to 70°) crustal block rotation. Hafnium isotope composition of Neogene zircon (εHf between –2 and 10) supports the predominant origin of the magmas from a heterogeneous lithospheric mantle, which may have been fertilized during an earlier Cretaceous subduction event and possibly by concurrent Miocene subduction. Xenocrystic zircon shows involvement of crustal sources resembling European continental basement. Fertility indicators, including Eu/Eu* and oxygen fugacity based on zircon composition, show no systematic correlation with the mineralizing events and/or age. High-precision (isotope dilution-thermal ionization mass spectrometry) U-Pb zircon geochronology demonstrates that the magmatic systems exposed at district scale evolved over less than ~100 k.y. and that durations of hydrothermal mineralization pulses were even shorter.
Formation of Topaz-Greisen by a Boiling Fluid: A Case Study from the Sn-W-Li Deposit, Zinnwald/Cínovec
Authors: Qiao Shilei , John Timm , Loges Anselm 
Published: June 2024

Abstract
Zinnwald/Cínovec is one of the largest Li-Sn-W greisen deposits in Europe. Greisens in general are important hosts for many major ore deposits of several high-tech elements—most prominently Sn, W, and Li. However, the mechanisms of greisenization in relationship to ore formation are still not well understood, especially for the important case of fluoride-rich greisen. Here, we investigate the sequence and formation mechanism of the topaz-greisen in the Zinnwald/Cínovec deposit. Based on the mineral abundances, the alteration profile can be divided into four distinct zones: (1) rhyolite, (2) albitite, (3) low-degree greisen, and (4) high-degree greisen. In the greisen zones, almost all the feldspar has been replaced by topaz (up to 12 vol %) + quartz (up to 78 vol %), and the abundance of mica gradually decreases from 11 to 3 vol % with increasing degree of greisenization. Mass balance calculations indicate a net influx of F and silica during greisenization.
Our observations are best explained by a two-stage greisenization process involving phase separation by boiling in the pore space of the sample: first an acidic HF-rich phase, likely a vapor, reacted with feldspar to form topaz and quartz in a dissolution-precipitation reaction. This reaction created substantial transient porosity, which was subsequently sealed by the precipitation of quartz and fluorite from a boiling liquid. We interpret the vapor and liquid as emerging from a common supercritical aqueous parental fluid. The characteristic sequence of creation of pore space by a vapor and the subsequent reduction of porosity by precipitation from the associated boiling liquid constrain the conditions and time available for ore formation. This study evaluates the mechanism of topaz greisenization and the controls on porosity evolution, which are crucial to ore element redistribution.
Sulfide Remobilization in the Metamorphosed Kayad Sedimentary Exhalative Zn-Pb Deposit, Western India: Evidence from Mode of Occurrence, Texture, Hydrothermal Alteration Features, and Trace Element Chemistry
Authors: Das Eileena , Pal Dipak C. , Upadhyay Dewashish , Tripathi Aparajita , Kashyap Vijendra , Meena Kastoor 
Published: June 2024

Abstract
The Kayad Zn-Pb deposit, situated within the Proterozoic Aravalli-Delhi fold belt in western India, is primarily characterized by sphalerite and galena along with pyrrhotite and chalcopyrite. The mineralization occurs as disseminated ores in quartzite, disseminated/laminated and massive ores in quartz-mica schist, and in pegmatite and quartz veins. The laminated ores conform to the regional schistosity and folding, whereas the massive Zn-Pb ores postdate the pervasive tectonic fabric, accumulating at the fold hinges. The massive ore is characterized by durchbewegung texture, discrete blebs of galena and chalcopyrite in a sphalerite matrix with low interfacial angles, and discrete intergrowths of sulfides and sulfosalts such as pyrargyrite, gudmundite, Ag-tetrahedrite, and breithauptite. Geochemical analyses of sulfides reveal microinclusions of sulfosalts comprising Ag, Sb, Cu, Tl, and As, which are regarded as low-melting chalcophile elements (LMCEs). Hydrothermal alteration is insignificant in the laminated and massive ores but prominent around Fe-Cu ± Zn-Pb and Zn-Pb ± Fe-Cu veins. The alteration assemblages in these veins evince a pervasive K + Na ± Fe alteration, later overprinted by a subsidiary Ca ± Na alteration. We interpret the laminated/disseminated ores to be of syndiagenetic sedimentary-exhalative (SedEx) origin formed within an euxinic basin. Conversely, the textural features, mineralogical composition, lack of associated hydrothermal alterations, and evident structural influence on the emplacement of the massive ores suggest they have been remobilized both via plastic flow and by sulfide partial melting. Temperature estimates of up to 650°C, derived from Ti-in-biotite geothermometry of the metamorphosed host rocks, indicate lower-middle amphibolite facies conditions during regional metamorphism. The initiation of melting at these temperatures was promoted by the desulfurization of pyrite to pyrrhotite in quartz-mica schist, aided by melting point depression due to the presence of LMCEs like Ag, Sb, and As.
The Spatial and Temporal Evolution of the Sadisdorf Li-Sn-(W-Cu) Magmatic-Hydrothermal Greisen and Vein System, Eastern Erzgebirge, Germany
Authors: Leopardi Dino , Gutzmer Jens , Lehmann Bernd , Burisch Mathias 
Published: June 2024

Abstract
The Sadisdorf Li-Sn-(W-Cu) prospect in eastern Germany is characterized by vein- and greisen-style mineralization hosted in and around a small granite stock that intruded into a shallow crustal environment. The nature and origin of this mineral system are evaluated in this contribution by a combination of petrography and fluid inclusion studies, complemented by Raman spectroscopy and whole-rock geochemical analyses. The early magmatic-hydrothermal evolution is characterized by a single-phase low-salinity (7.0 ± 4 wt % NaCl equiv), high-temperature (&gt;340°C), CO2-CH4–bearing aqueous fluid, which caused greisen alteration and mineralization within the apical portions of the microgranite porphyry. The bimodal distribution of brine and vapor fluid inclusions, and the formation of a magmatic-hydrothermal breccia associated with the proximal vein mineralization are interpreted to mark the transition from lithostatic to hydrostatic pressure. The vein- and stockwork-style mineralization (main stage) displays lateral zonation, with quartz-cassiterite-wolframite-molybdenite mineral assemblages grading outward into base-metal sulfide-dominated assemblages with increasing distance from the intrusion. Late fluorite-bearing veinlets represent the waning stage in the evolution of the mineral system. The similarity in the homogenization temperature (250°–418°C) of fluid inclusions in quartz, cassiterite, and sphalerite across the Sadisdorf deposit suggests that cooling was not a significant factor in the mineral zonation. Instead, fluid-rock interaction along the fluid path is considered to have controlled this zonation. In contrast to quartz-, cassiterite- and sphalerite-hosted fluid inclusions, which have a salinity of 0.0 to 10.0 wt % NaCl equiv, the fluid inclusions in late fluorite veins that overprint all previous assemblages have a salinity of 0.0 to 3.0 wt % NaCl equiv and homogenize at temperatures of 120° to 270°C, thus indicating cooling with or without admixture of meteoric fluids during the waning stage of the mineral system. The Sadisdorf deposit shares similar characteristics with other deposits in the Erzgebirge region, including a shallow level of emplacement, similar mineralization/alteration styles, and a hydrothermal evolution that includes early-boiling, fluid-rock interaction, and late cooling. In contrast to most systems in the region, both proximal and distal mineralization are well preserved at Sadisdorf. The recognition of such spatial zoning may be a useful criterion for targeting greisen-related Li and Sn resources.
Catullus and the tragedy of Ariadne
Authors: Trimble Gail 
Published: June 2024

Les allusions bien connues aux prologues tragiques dans le proème du Carmen 64 de Catulle soulèvent des questions sur les relations génériques entre tragédie, épopée et épyllion, relations qui encouragent le lecteur du poème à voir l’ekphrasis d’Ariane tout entière comme une tragédie. Telle que Catulle la présente, l’histoire d’Ariane possède un prologue qui situe la scène, une rhesis centrale, un climax tragique et un deus ex machina ; elle a aussi sa propre audience sous la forme des Thessaliens invités au mariage. Le didaskalos de cette tragédie est le narrateur du Carmen 64, apparemment une version du poète Catulle lui‐même. Plusieurs des poèmes personnels de Catulle se lisent déjà comme des fragments de tirades tragiques, sans présenter toutefois une figure équivalente qui les organise en un tout cohérent. L’article va plus loin que les travaux précédents dans l’analyse de la raison pour laquelle l’Ariane présentée dans l’ekphrasis tragique est un parallèle si proche du Catulle dont nous entendons la voix dans sa poésie personnelle.
PENGGUNAAN ANTIBIOTIK UNTUK PENGOBATAN INFEKSI SALURAN KEMIH (ISK) BAGIAN ATAS PADA PASIEN BPJS RAWAT JALAN
Authors: Intan Permata Sari  , Kartika Rahma  , Dwi Puspita Sari  
Published: June 2024

Infeksi saluran kemih (ISK) adalah infeksi karena reproduksi mikroorganisme di saluran kemih. Penelitian ini bertujuan untuk mengetahui profil dan kesesuaian penggunaan antibiotik pada pasien wanita dengan jaminan BPJS dengan rentang umur 18-40 tahun serta rasionalitas penggunaan obat ISK. Metode yang digunakan dalam penelitian ini adalah retrosfektif dan analisa datanya disajikan secara deskriptif. Hasil dari peneitian ini diperoleh data dari 710 pasien Infeksi Saluran Kemih (ISK) bagian atas di RSUD Ciracas Jakarta Timur pada tahun 2018-2019, sampel yang memenuhi kriteria inklusi dan ekslusi sebanyak 88 pasien, dari catatan rekam medis yang menujukkan bahwa penggunaan antibiotik yang paling banyak adalah cefixime (52,2%), ciprofloxacin (32,9%), levofloxacin (14,7%), dan penggunaan antibiotik berdasarkan tepat indikasi 100%, tepat pasien 100%, tepat dosis 89,7%, dan tepat lama pemberiannya 100% dari 88 kasus infeksi saluran kemih bagian atas.
Pengaruh Pemberian Reward Dan Punishment Terhadap Kinerja Karyawan PT Prima Kreasindo
Authors: Wahyudin Agus , Ismuni Mutdi , Imanuddin Kaffah 
Published: June 2024

Kinerja karyawan di PT. Prima Kreasindo mengalami penurunan yang kemungkinan disebabkan oleh beberapa faktor Reward dan Punishment. Tujuan penelitian ini yaitu untuk mengetahui pengaruh Reward dan Punishment terhadap kinerja pegawai. Penelitian yang menggunakan metode kuantitatif dengan teknik asosiatif dengan populasi berjumlah 32 orang karyawan serta dengan teknik pengumpulan data menggunakan kuesioner. Hasil pengujian persamaan regresi linear ganda yaitu Ý = 11,545 + 0,489X1 + 0,346X2 dapat digunakan untuk menjelaskan bentuk hubungan linear antara Reward dan Punishment dengan Kinerja Pegawai. Persamaan regresi linear ganda Ý = 11,545 + 0,489X1 + 0,346X2 menunjukkan bahwa apabila Reward dan Punishment serta Kinerja Pegawai diukur dengan instrumen yang digunakan dalam penelitian ini, maka setiap kenaikan satu unit skor Reward (X1) akan diikuti oleh kenaikan skor Kinerja Karyawan sebesar 0,4898 dengan konstanta 11,545. Dan setiap kenaikan satu unit skor Punishment (X2) akan diikuti oleh kenaikan skor Kinerja Pegawai sebesar 0,346 dengan konstanta 11,545.
Studi Kasus Efektivitas Kompres Bawang Merah Terhadap Penurunan Suhu Tubuh Bayi Pasca Imunisasi DPT Di PMB. N
Authors: Kurnia Nia , Hanifa Fanni 
Published: June 2024

Demam yaitu dimana tubuh mengalami peningkatan suhu dengan nilai >37,5oC terjadi oleh karena di hipotalamus meningkatnya pusat pengatur suhu. Bayi pasca imunisasi DPT akan mengalami peningkatan suhu sesaat setelah penyuntikan, dan akan sembuh setalah 1-2 hari pasca penyuntikan. Penelitian ini bertujuan untuk mengetahui efektivitas kompres bawang merah terhadap penurunan suhu tubuh bayi pasca imunisasi DPT di PMB N. Jenis penelitian yang digunakan secara kualitatif dengan pendekatan studi kasus. Penurunan suhu tubuh pada responden 1 sebanyak 1,2oC (awal 38,0oC menjadi 36,8oC) dan pada responden 2 mengalami penurunan sugu tubuh 0,4oC (awal 36,2oC menjadi 37,6oC). Kesimpulan penelitian ialah kompres bawang merah terbukti efektif terhadap penurunan suhu tubuh bayi pasca imunisasi DPT di PMB N Tahun 2023. Saran bagi ibu bayi diharapkan agar mampu meningkatkan pemahaman mengenai pentingnya pemberian imunisasi dan penatalaksanaan yang dapat diberikan kepada bayi dengan KIPI agar mampu meningkatkan kualitas dan derajat kesehatan bayi.
TRƯỜNG HỢP NHIỄM HERPES SIMPLEX Ở TRẺ SƠ SINH
Authors: Vũ Nguyệt Minh , Nguyễn Mạnh Hùng 
Published: June 2024

Nhiễm virus herpes simplex ở trẻ sơ sinh thường lây truyền trong quá trình sinh nở. Một dấu hiệu điển hình là phát ban mụn nước, có thể kèm theo hoặc tiến triển thành bệnh lan tỏa hoặc bệnh lý thần kinh. Chẩn đoán bằng nuôi cấy virus, xét nghiệm PCR, miễn dịch huỳnh quang kính hiển vi điện tử hoặc ELISA. Điều trị bằng acyclovir tiêm liều cao và chăm sóc hỗ trợ. Trong bài này, chúng tôi xin được báo cáo một trường hợp trẻ nam 16 ngày tuổi với các biểu hiện của bệnh này.
الجيش والسلطة السياسية في الدول النامية-العربية : مطارحات فكرية في بيئة ما بعد نهاية الحرب الباردة
Authors: العوفي محمد 
Published: June 2024

تناقش هذه الدراسة علاقة الجيش بالسلطة السياسية في الدول النامية بصفة عامة، والعربية منها على وجه الخصوص، منظورا إليها من زاوية التصورات النظرية التي قاربتها في بيئة ما بعد نهاية الحرب الباردة، بكل ما حملته من زخم خارجي دافع نحو تعزيز موقع النخبة السياسية أمام العسكرية لتيسير الإصلاحات الديمقراطية في معظم هذه الدول.
أما في العربية منها، فقد تميزت اختلفت المقاربة النظرية لعلاقة الجيش بالسلطة السياسية بين حقبتين اثنتين؛ قبل اندلاع ثورات الربيع العربي لعام 2011، والتي تموقع الجيش في معظم جمهورياتها كفاعل مهيمن على السلطة السياسية، وكذراع للحاكم في جل الملكيات وباقي الجمهوريات، وإبان الثورات من خلال وضع شبكة تقييم قبلي لموقفه بين دعم النظام السياسي أو الاطفاف مع الجمهور الثائر.
انتهت الدراسة إلى أن نجاح مسار الانتقال الديمقراطي في بعض الدول النامية الأسيوية تحقق بعد تجند النخبة السياسية للتحكم في وضع السياسة العامة؛ ومنها السياسة العسكرية، فيما تعذر ذلك في معظم الدول النامية التي حافظت فيها النخبة العسكرية على هيمنتها على كل من وضع السياسة العامة، وإدارة الأمن القومي، والتنظيم الداخلي للجيش.
أما في الدول العربية، فتأكد أن الجيش فاعل مهيمن على السلطة السياسية الفعلية، ومن وراء ستار مدني في جل الجمهوريات، وهو بمثابة قوة ضغط يوفر الأمن للنظم الملكية في مقابل إغداقها عليه بالامتيازات، وهو أحد المفاتيح الرئيسية لإنجاح الثورات العربية أو إفشالها. وبالتالي فأي انتقال ديمقراطي حقيقي في الدول النامية والعربية مشروط بإخراج الجيش من السلطة السياسية.
الكلمات المفتاحية : – المؤسسة العسكرية – النخبة السياسة – السلطة السياسية- الإصلاح السياسي – الدول العربية.