bluuebunny/crossref_metadata_2025_split huggingface dataset:
Mineralisation controls for the diverse Cape manganese occurrences, South Africa
Authors: von der Heyden B.P. , La Cock R.A. , Ferreira D.R. , Conradie T.A. , van Rooyen J.D. , Palcsu L. 
Published: October 2024

Abstract
The Cape Fold Belt, comprising folded sedimentary sequences from predominantly the Palaeozoic Cape Supergroup, hosts a multitude of manganese occurrences and mineral deposits, many of which were subject to historical mining activity. Although size, grade and quality issues negate their modern-day exploitation for the steel-making process, the mechanisms by which Mn has enriched at these sites holds scientific value for our understanding of low-temperature Mn (bio-)geochemical cycling. Deposits located within the Cape Fold Belt comprise structure-hosted Mn deposits and a little described class of Mn mound deposits associated with chalybeate thermal springs (temperature = 41 to 48°C). Although the relationships between the two remain tenuous, detailed study of both classes provides insight into the conditions that favour Mn accumulation in the near-surface and sub-aerial environments. Comparisons between the physicochemistry of manganiferous- and non-manganiferous thermal springs suggest that manganese solubility is favoured by warm, acidic and slightly reducing fluids with elevated salinity. Transport, and associated fluid focusing typically within highly permeable sandstone units, serves to locate Mn mineralisation in near-surface structurally-complex trap sites that provide both accommodation space and conditions that are sufficiently oxidising. Where manganiferous spring waters spill out at surface, oxidation is caused by contact with atmospheric O2 to form Mn mound deposits, and ambient Mn-oxidising microbiota (e.g., genus Ramlibacter, and members of Burkholderiales, Rhodocyclaceae, and Oxalobacteraceae) are likely to play a role in enhancing the kinetics of this process. Relative to the structure-hosted deposits, these Mn mound deposits are typically lower grade (higher iron content) and relatively friable (high porosity and fine grain sizes). Supergene and diagenetic processes can lead to localised upgrade of the Mn mound material, although typically not to ore grade.
Tectonic setting and Pan-African structural evolution of the western Saldania Belt, South Africa
Authors: Rheeder C.G. , Kisters A.F.M. 
Published: October 2024

Abstract
The western Saldania Belt records the closure of the Adamastor Ocean and amalgamation of southwest Gondwana in the latest Neoproterozoic and early Phanerozoic, but the geodynamic setting and evolution of the belt remains controversial. Regional mapping and the integration of structural data presented in this paper document the juxtaposition of domains with distinct fabric development and kinematics. Structures record Pan-African strains and a strike-slip dominated sinistral transpression during southeast-directed subduction and convergence at low angles to the continental margin. Two main, structurally overlying domains – an upper and a lower domain – can be distinguished. Rocks of the upper domain record the partitioning of the transpressional strain into (1) broad regions of more or less upright, north to northwesterly-trending folds (F2) that record horizontal, mainly coaxial, east-northeast to west-southwest directed shortening at high angles to the continental margin, and (2) the northwesterly-trending, sinistral strike-slip Colenso Fault Zone that accommodates the margin-parallel, non-coaxial component of deformation between ca. 555 and 520 Ma. The strike-slip partitioning was promoted by strain localisation into synkinematic plutons of the Cape Granite Suite. In contrast, rocks in the pervasively transposed, mélange-like lower domain in the central Swartland region record episodes of vertical, coaxial shortening alternating with non-coaxial top-to-the-west and -northwest thrusting. The coaxial shortening strains relate to the thickening and gravitational loading of the succession in response to thrusting and tectonic underplating. Non-coaxial strains denote episodes of seismic slip during underthrusting.
The different fabric domains are interpreted to represent a section through a fore-arc region, from the deeper level accretionary prism (lower domain) to the overlying, folded fore-arc basin succession (upper domain). Regional-scale klippen structures indicate the transfer of lower-domain phyllites into the overlying fore-arc sequence. The proposed fore-arc setting of the Saldania Belt suggests the subduction of the Adamastor Ocean below the leading edge of the Kalahari Craton. This challenges stratigraphic and structural correlations between the Saldania Belt and the Gariep Belt to the immediate north.
Caracterización clínica de dengue con signos de alarma y dengue grave en adultos. Hospital Roosevelt, Guatemala
Authors: Navas Sabrina , Guzmán Torres Mariana , Baldizón Pernillo Diana Karina , Orellana Pinto Deemi Fernanda , Samayoa Bran Ana Johanna 
Published: October 2024

Introducción: El dengue es uno de los arbovirus de mayor importancia clínica y epidemiológica a nivel mundial. En Guatemala, durante el 2023 se registró el número más alto de casos en los últimos 10 años y un incremento de 135% en el número de casos comparado con el 2022.Objetivo: Caracterización clínica de dengue con signos de alarma y dengue grave. Metodología: Estudio descriptivo transversal retrospectivo, incluyó registros de 206 pacientes con signos de alarma de dengue que acudieron a la Emergencia de Adultos del Hospital Roosevelt de Guatemala, del 26 de septiembre al 26 de noviembre del 2023.Resultados: Predominó el sexo femenino en 54,4% y el grupo etario de 12-22 años en 51,0%. El principal signo de alarma fue el sangrado en 63,6%. Las mayores complicaciones fueron hepatopatía en 9,2%, choque en 5,8% y alteración neurológica en 2,9%. Respecto a los parámetros hematológicos, predominaron la trombocitopenia en 93,2%, leucopenia en 53,9% y linfocitosis en 71,4%. Las transaminasas AST y ALT presentaron elevación en 97,0% (96/99) y 91,0% (142/156), respectivamente. Los tiempos de coagulación se mostraron prolongados en 55,9% (104/186) para TPT y en 22,6% (42/186) para TP. Hubo 78,7% de positividad (148/188) para dengue. El 8,3% (17/206) de los pacientes fue referido al área crítica por clasificación de dengue grave.Conclusión: Estos datos aportan una mejora en el reconocimiento y el manejo clínico adecuado de casos con signos de alarma y dengue grave, que pueden contribuir para disminuir la carga de morbimortalidad de esta enfermedad en el país.
Normative Reference Values and Validity for the 30-Second Chair-Stand Test in Healthy Young Adults
Authors: Lein Donald H. , Alotaibi Mansour , Almutairi Marzouq , Singh Harshvardhan 
Published: October 2024

Background Clinicians often use physical performance tests (PPT) to measure performance measures in sports since they are easy to administer, portable, and cost-efficient. However, PPT often lack good or known psychometric properties. Perhaps, the 30-second chair-stand test (30CST) would be a good functional test in athletic populations as it has been shown to demonstrate good psychometric properties in older adults. Hypothesis/Purpose The purpose of this study was to determine normative values for and concurrent, convergent and discriminative validity of 30CST for healthy young adults aged 19-35 years. Study Design Cross-sectional Methods Eighty-one participants completed this study. All participants performed two trials of 30CST, 5-times sit-to-stand (5xSTS), and lateral step-up test (LSUT). Investigators used the International Physical Activity Questionnaire Leisure Domain (LD-IPAQ) to divide participants into insufficiently or sufficiently active groups based on the weekly metabolic equivalent of task per the Physical Activity Guidelines for Americans. Results Participants (Mean + SD age, 25.1 ± 3.4 years; body height, 1.71 ± 0.09 m; body mass, 72.6 ± 16.1 kg; females 47) performed an average of 33.0±5.4 30CST repetitions. The 30CST performance was negatively associated with 5xSTS (r=-0.79 p=0.01) and positively associated with LSUT performances (r=0.51, p=0.01) when using Pearson correlations. In addition, the sufficiently active group performed significantly greater 30CST repetitions than the insufficiently active group (mean difference = 2.5; p=0.04). Conclusions In addition to finding a reference value for 30CST performance in young adults, investigators found that the 30CST displayed concurrent and convergent validity in assessing functional lower extremity (LE) muscle strength and discriminated between those with sufficient and insufficient physical activity levels. Training and rehabilitation professionals could use the 30CST for testing functional LE muscle strength for athletes in pre-season or during rehabilitation. Future investigators should perform studies to determine if 30CST predicts sport performance. Level of Evidence Level 2
An Improved Fire Detection Algorithm Based on YOLOv8 Integrated with DGIConv, FourBranchAttention and GSIoU
Authors: Zhang Muxiang 
Published: October 2024

Fire detection is highly important for people's lives and property, and enhancing its accuracy is essential. This study focused on utilizing and improving YOLOv8 to obtain higher detection accuracy for fire detection. Three methods were used. First, the newly designed DGIConv module replaces the original Conv module, thereby decreasing the computational complexity while enhancing the model's performance. Second, to enhance the recognition ability of flame targets, a new attention mechanism named FourBranchAttention was designed, and a comparison was made with other attention mechanisms. The experiments revealed that the newly designed attention mechanism performed best on the mAP50 and mAP50-95 metrics. Finally, to improve the convergence speed and localization ability of the model, the loss function is optimized by adopting better hyperparameters of the TaskAlignedAssigner and employing the newly designed GSIoU as an alternative to the original CIoU. Through ablation experiments, all three improvements improved the detection performance to a certain extent, and the model using the three improvements achieved the best performance. Compared with the baseline, the YOLOv8 model with DGIConv, FourBranchAttention, and the optimized loss function increased the mAP50 by 2.52% and the mAP50-95 by 3.37%. The mAP50 and mAP50-95 had reached 98.46% and 75.26%, respectively. Compared with previous models, such as SSD/YOLOv7, the performance metrics of enhanced YOLOv8 also exhibited significant enhancements, thereby augmenting the accuracy of fire detection. Doi: 10.28991/HIJ-2024-05-03-09 Full Text: PDF
Sosialisasi Hasil PRA (Participactory Rural Appraisal) Dusun Longserang Barat Utara Desa Langko Kecamatan Lingsar Kabupaten Lombok Barat
Authors: Wardi Liza Hani Saroya 
Published: October 2024

Tulisan ini bertujuan untuk menjelaskan tentang kegiatan sosialisasi hasil PRA (particaptory Rural Apprisial) bagi Masyarakat Dusun longserang Barat Utara Desa Langko Kecamatan Lingsar Kabupaten Lombok Barat. Sosialisasi ini sangat perlu dilakukan untuk mengatahui masalah dan potensi yang bisa dianalisa bersama masyarakat sehingga masyarakat mampu membuat konsep perencanaan dari dusun Longserang Barat Utara melalui sosialisasi yang dilakukan di Dusun Longserang Bara Utara tersebut. Hasil dari kegiatan ini adalah (1). Masyarakat dusun setuju dengan konsep perencanaan dusun yang telah disepakati bersama yaitu Dusun Longserang Barat Utara sebagai dusun wisata edukasi tentang alam dan produksi gula semut, (2). Pemuda dusun siap sebagai kelompok pelaku sadar wisata, (3). Kelompok tim PRA akan melengkapi konsep yang disepakati bersama sampai pada tahapan dan Langkah teknis berupa gambar perancangan dari konsep yang direncanakan, (4). Semua kegiatan termasuk kesepakatan bersama ini telah disetujui oleh Kepala Desa, Kepala Dusun dan masyarakat, (5). Konsep perencanaan menjadi usulan yang akan disampaikan pada musrenbang baik itu di tingkat desa sampai kabupaten sekaligus sebagai usulan ke stakeholder yang terkait dengan usulan rencana tersebut, (6). Bersama-sama pemuda dan pemuka dusun untuk mensosialisasikan konsep kepada masyarakat yang tidak hadir. Di akhir acara sosialisasi, masyarakat sangat berterimakasih atas diadakan sosialisasi ini dikarenakan dapat menggugah masyarakat untuk membangun dusun mereka sendiri. Setidaknya dengan adanya sosialisasi hasil PRA ini dapat mambantu masyarakat untuk menegetahui masalah dan potensi yang dapat dikembangkan menjadi konsep perencanaan Dusun Longserang Barat Utara sebagai dusun wisata edukasi tentang alam dan produksi gula semut dapat meningkatkan pendapatan ekonomi masyarakat dusun tersebut nantinya.
Pengaruh Media Pembelajaran Aplikasi Edpuzzle Terhadap Kemampuan Menulis Teks Eksplanasi Siswa Kelas VIII Di SMP Negeri 37 Medan
Authors: Siburian Rosnelly , Sitohang Tigor , Simajuntak Harlen 
Published: October 2024

Penelitian ini bertujuan untuk mengetahui Pengaruh Media Pembelajaran Aplikasi Edpuzzle terhadap Kemampuan Menulis Teks Eksplanasi Siswa Kelas VIII di SMP Negeri 37 Medan . Jenis Penelitian adalah penelitian kuantitatif dengan metode eksperimen dengan desain penelitian two grup posttest design. Populasi dalam penelitian ini adalah seluruh kelas VIII dengan jumlah 180 orang dan sampel penelitian adalah kelas VIII B dengan jumlah 30 orang dan kelas VIII D 30 orang dengan teknik random sampling. Teknik analisis data yang digunakan uji normalitas, uji homogenitas dan uji hipotesis. Diperoleh nilai rata-rata posttest kelas kontrol 53,33 dan posttest di kelas eksperimen nilai rata-rata 78,33. Hasil pengujian normalitas kelas kontrol diperoleh hasil < = 0,1055 < 0,161, uji normalitas kelas eksperimen diperoleh hasil < = 0,1402 < 0,161, hal tersebut menunjukkan bahwa penelitian dinyatakan normal, uji homogenitas diperoleh hasil < atau 1.59914 < 1,8608, dinyatakan homogen dan uji hipotesis menggunakan uji “t” pada taraf signifikan α = 0,05 diperoleh hasil > atau 7.120 > 1.6715 dengan demikian Ho ditolak dan Ha diterima. Dapat disimpulkan bahwa pengaruh media pembelajaran edpuzzle mampu meningkatkan kemampuan menulis teks eksplanasi pada siswa kelas VIII di SMP Negeri 37 Medan tahun ajaran 2024/2025.
Analysis of Parasites Afflicting Sangkuriang Catfish (Clarias gariepinus) at UPR SD Mina Jaya
Authors: Surya Khairunnisa  , Kurnia Wati  , Puspita Dewi Rani  , Ellya Anggraeni  , Ma’arif Arya Panca  , Dio Ardy Azhari Marpaung  , Bambang Wahyudi  , Aldi Helfahmi  , Muhammad Fadli  , Rumondang  , Asprin Tamba  
Published: October 2024

Catfish (Clarias gariepinus) is a type of freshwater fish that is cultivated commercially by Indonesian people. One of the key factors for success in aquaculture is water quality. Poor water quality can cause stress to fish and lead to the proliferation of parasites. Parasites are organisms whose existence depends on other organisms. This research aims to analyze the parasites that attack sangkuriang catfish (C. gariepinus) in the SD Mina Jaya People's Hatchery Unit. It is hoped that this research activity can determine the parasites that attack catfish. Data collection was carried out using a descriptive method, with the sampling method for sangkuriang catfish (C. gariepinus) carried out randomly (random sampling). The research resulted in the identification of parasites that infect catfish in cultivation ponds at UPR SD Mina Jaya consisting of 4 types of parasites from the Phylum Nematoda. The types of parasites obtained were Dactylogyrus sp., Gyrodactylus sp., Octolasmis sp., Capilaria hepatica. The water quality in the cultivation ponds was also still classified as normal, namely a temperature of 290C, pH 8.5, and DO 7.5 mg/L.
Delving into EFL Pre-Service Teachers’ Emotional Experiences: Professional Identity Construction in Online Teaching Practice Programs
Authors: Khoiriyah  , Widiati Utami , Cahyono Bambang Yudi , Rachmajanti Sri 
Published: October 2024

This paper presents the online teaching practice program that influence EFL pre-service teachers’ (PSTs) emotional experiences as the pre-cursor of their professional identity construction. This study involved six PSTs enrolled teaching practice program in an initial teacher education. Dialogic reflection before, during, and after teaching enactment was employed to dig up information about their emotional experiences in an online classroom setting. The data were analyzed using appraisal analysis (Martin and White, 2007) and thematic analysis. The results document negative emotional experiences such as feeling dissatisfaction, doubtful, and confusion which lead to positive emotional experiences, such as caring. Factors that influence PS Ts’ emotional experiences in online teaching practice are lack of Curriculum Knowledge (CrK), lack of subject-matter knowledge or Content Knowledge (CK), and lack of Pedagogical Knowledge (PK) in terms of assessing students’ competence, and the interlink between theory and practice. All PS Ts develop a good understanding of how to exploit technological tools by encouraging their self-concept. This study substantiates the importance of shared-space coaching for teacher mentors before they become an escort for PSTs who are going to be professional teacher mentors.
Learners Engagement in Online Teacher Professional Development: Scale Development and Validation
Authors: Taloko Johanes L. , Rachmajanti Sri , Maria Ivone Francisca 
Published: October 2024

Research has shown that effective online teacher professional development (OTPD) requires teachers to learn and engage professionally to become high-quality teachers. Understanding teachers' engagement as learners in OTPD is crucial as such engagement indicates active learning, interaction, and collaboration with other teachers. Nevertheless, there has not been any instrument measuring how teachers behave (behavioral), feel (emotional), think (cognitive), and socialize (social). Therefore, the goal of the present study was to create a context-specific survey instrument to measure the engagement of EFL teachers in OTPD. This study, using the research and development (R&D) method, involved 385 Indonesian in-service EFL teachers in nine universities conducting OTPD in Indonesia. The statistical results of explanatory (EFA) and confirmatory factor analyses (CFA) confirmed the four-dimensional construct in the OTPD Learner Engagement Instrument, mainly behavioral, emotional, cognitive, and social dimensions of engagement. The study's policy and practical implications addressing the policymakers, institutions, and future research were also presented.
The state and prospects of improving the hygienic regulation of industrial general vibration
Authors: Prokopenko Lyudmila V. , Courierov Nikolay N. , Lagutina Alla V. 
Published: October 2024

Hygienic rationing is an integral part of national measures in the field of occupational safety and health of workers. The current norms of general industrial vibration, as is known, are not safe. This determines the urgency of improving the system of hygienic rationing of general vibration, which, despite the achievements of science and technology, the emergence of a new controlled vibration parameter — full vibration acceleration, the introduction of a risk-based approach to rationing, has remained virtually unchanged for almost four decades.
The study aims to analyze domestic and international approaches to the assessment and normalization of general industrial vibration to justify the transition to a risk-oriented single-digit regulation of full vibration acceleration.
The authors carried out an expert and analytical study, analyzed and compared the materials of domestic and foreign regulations, methodological documents and literary sources on various aspects of the problem of rationing general industrial vibration.
Scientists have developed a new system for rationing the unfavorable factor of the production environment — general vibration, which establishes an integral standard for complete vibration acceleration, instead of differentiated rationing by vibration sources (transport, transport-technological, man-made) and directions of vibration action along the axes of the basocentric coordinate system (Z, X, Y). The new standard for full vibration acceleration is harmonized with ISO 2631 standard, Directive 2002/44/EC, standards adopted in foreign countries, and, according to calculations, can be approximately 0.56 m/s2 or 115 dB, which requires experimental studies to verify.
The new risk-oriented system of rationing of the industrial general vibration will make it possible to objectify the assessment of workers' working conditions and, as a result, streamline and update the examination of the connection of the disease with the profession.
South America's Ongoing Interrogation of the Political
Authors: Plot Martín 
Published: October 2024

Abstract
The notions of “concepts of the political” and that of “political concepts” refer to different but intertwined phenomena. As I will argue in this article, the concepts of the political refer to the self-institution of societies, while political concepts are those that emerge in the realm of politics, a field some societies institute as precisely the site in which the reversibility of the political takes place. This article will argue that the concepts of the political and the political concepts coming out of South America in its contemporary history spring from the main events and processes—the political and social history—that dominated the period. The events and concepts first discussed will be those related to the conquest and its legacy, only to later move fully to the past fifty years of dictatorships, transitions to democracy, and the emergence of the neopopulist political form.
German-Jewish Resistance and Gestapo Research
Authors: Brothers Eric 
Published: October 2024

Abstract
It was just four days after the botched, amateurish and poorly executed sabotage attack on the anti-Soviet and anti-Semitic ‘Soviet Paradise’ mass exhibition in Berlin's Lustgarten (18 May 1942) that the Gestapo began arresting members of the Herbert Baum group. Resistance historiography has basically ignored the important role that resistance-Gestapo interaction has played within Nazi Germany. This article uses Robert Gellately's important 1991 essay as a starting point in order to begin correcting that omission. Post-war interrogation reports and other primary source material on leading Gestapo figures provide insights into Gestapo interactions with and attitudes towards the German resistance. Primary sources are interpreted in order to recreate an interrogation session at the hands of the Gestapo. Torture methods used by the Gestapo on Baum group members are discussed.
Book Reviews
Authors: Fielding Nick , Ward Christopher J. 
Published: October 2024

The Man Who Loved Siberia Roy Jacobsen and Anneliese Pitz (London: Maclehose Press, 2023), 302 pp., ISBN: 9781529413038.
A Life in Music from the Soviet Union to Canada: Memoirs of a Madrigal Ensemble Singer Alexander Tumanov, translated and edited by Vladimir Tumanov (Denton, TX: University of North Texas Press, 2019), 435 pp., ISBN: 9781574417555.