bluuebunny/crossref_metadata_2025_split huggingface dataset:
Study and characterization of Fe3O4 synthesized from natural iron sand in Sumatera Utara
Authors: Rianna Martha , Hamid Muhammadin , Handayani Fitri , Sebayang Achmad Maulana Soehada , Rangkuti Wina Rahmadani , Situmorang Marhaposan , Sembiring Timbangen , Setiadi Eko Arief , Tetuko Anggito P. , Sebayang Perdamean 
Published: October 2023

Abstrak. Pasir besi alam adalah satu dari sumberdaya alam di Indonesia, khususnya Sumatera Utara, yang pemanfaatannya belum dilakukan secara optimal. Penelitian ini dilakukan untuk menganalisis kandungan dan ukuran butir Fe yang terdapat di Provinsi Sumatera Utara. Pembuatan sampel pasir besi alam ini menggunakan metode milling basah yang dikeringkan pada suhu 100oC hingga sampel menjadi serbuk. Selanjutnya, proses ekstrasi menggunakan magnet permanen dilakukan pada sampel pasir untuk memisahkan material magnetik dan non magnetik didalamnya. Sampel magnetik yang diperoleh kemudian diuji menggukan alat XRD, SEM-EDX dan VSM. Hasil XRD menunjukkan bahwa sampel pasir besi alam memiliki fasa tunggal yaitu fasa magnetite (Fe3O4), dan struktur kristal kubik spinel yang mana a = b = c = 8.513 Ǻ. Berdasarkan hasil SEM-EDX, terdapat kandungan unsur Fe dan O didalam pasir besi, yang berasal dari fase Magnetit (Fe3O4), maghemite (γ-Fe2O3) dan hematit (α-Fe2O3). Hasil VSM menunjukkan bahwa parameter sifat magnetik saturasi (Ms) sebesar 30.52 emu.g-1, magnetik remanansi (Mr) sebesar 21.66 emu.g-1 dan koersivitas sebesar 455.17 Oe. Hasil studi ini berpotensi dalam pengolahan material magnetik lainnya sehingga dapat ditindaklanjuti dalam pembuatan material berikutnya dalam aplikasi bidang tertentu. Abstract. Natural iron sand includes one of the natural resources in Indonesia, especially in Sumatera Utara which has not been used optimally. The study was done to investigate the content and grain size of Fe found in Sumatera Utara. The manufacture of this natural iron sand sample uses the wet milling method which is dried at 100oC until the sample becomes powder. Next, the extraction process using permanent magnet was performed on the sand sample to separate its magnetic and non-magnetic materials. The iron sand was tested via XRD, SEM-EDX and VSM. The XRD results reveal that the natural iron sand sample has a single phase of magnetite (Fe3O4) phase, and a spinel cubic crystal structure with a = b = c = 8.513 Ǻ. SEM-EDX results show that the iron sand sample consists of Fe and O components, which come from Magnetite (Fe3O4), Maghemite (γ-Fe2O3) and hematite (α-Fe2O3) phases. The VSM results show that the saturation type (Ms) parameter is 30.52 emu.g-1, remanence type (Mr) is 21.66 emu.g-1 and coercivity is 455.17 Oe. The study’s results are potential in other making magnetic materials, so that they can be followed up in the manufacture of subsequent materials in certain applications, respectively.
Development of Smart Packaging Film Label based on pH Sensor from Natural Source: Red Spinach for Freshness Detector of Meat
Authors: Supardianningsih Supardianningsih , Mutsla Afifah , Riana Meisi , Ardiani Septia , Amalia Bunda 
Published: October 2023

Abstrak. Smart packaging merupakan salah satu teknologi baru dalam bidang pengemasan yang dapat menginformasikan perubahan yang terjadi pada produk atau lingkungannya seperti suhu, pH, dan pertumbuhan mikroba. Pada penelitian ini akan dikembangkan label film smart packaging berbasis sensor pH dari sumber alami berupa ekstrak bayam merah. Dari hasil penelitian ditemukan bahwa ekstrak bayam merah dengan pH = 2 memiliki nilai serapan yang tinggi, paling asam, dan warna paling solid dibandingkan pH lainnya, dibuktikan dengan hasil UV-Vis dengan puncak tertinggi. Hasil pengujian FTIR menunjukan ekstrak bayam merah masih terdeteksi di dalam sample label film kemasan. Label film dengan konsentrasi ekstrak bayam merah 6%, 8%, dan 10% memiliki hasil uji ketebalan, kuat tarik dan elongasi yang seragam dengan rata-rata nilai untuk uji ketebalan 0,015 mm, uji kuat tarik dengan nilai 5,67 kgf/cm², dan uji elongasi 0,19%. Label film dengan konsentrasi ekstrak bayam merah 6%, 8% dan 10% memiliki warna yang solid dan menghasilkan perubahan warna yang mudah diamati. Tidak hanya itu dalam pengujian fisik, mekanik kerekteristik UV-Vis, FTIR dan perubahan warna nya label film dengan konsentrasi 6%, 8%, 10% memiliki hasil uji yang baik dan dapat diaplikasikan pada kemasan daging. Abstract. Smart packaging is a new technology in the field of packaging that can inform changes that occur in products or their environment, such as temperature, pH, and microbial growth. In this research a smart packaging film label based on a pH sensor will be developed from a natural source in the form of red spinach extract. From the research results it was found that red spinach extract with pH = 2 had the highest absorption value, the most acidic, and the most solid color compared to other pHs, as evidenced by the UV-Vis results with the highest peaks. The results of the FTIR test showed that red spinach extract was still detected in the sample packaging film labels. Film labels with red spinach extract concentrations of 6%, 8%, and 10% had uniform thickness, tensile strength and elongation test results with an average value for the thickness test of 0.015 mm, tensile strength test with a value of 5.67 kgf/cm², and 0.19% elongation test. Film labels with red spinach extract concentrations of 6%, 8% and 10% have solid colors and produce easily observable color changes. Not only that, in physical testing, mechanical characteristics UV-Vis, FTIR and changes in color, film labels with concentrations of 6%, 8%, 10% have good test results and can be applied to meat packaging.
Hydrocarbon Spectra Slope (HYSS): A Spectra Index for Quantifying and Characterizing Hydrocarbon oil on Different Substrates Using Spectra Data
Authors: Olagunju Kamorudeen Tunde , Allen Callen Scott , Olobaniyi Samuel Bamidele , Oyedele Kayode Festus 
Published: October 2023

Many sensors in Optical domain allow for detection of hydrocarbons in oil spills study. However, high resolution laboratory and airborne imaging spectrometers have shown potential for quantification and characterization of hydrocarbon. Available methods in literature for quantifying and characterizing hydrocarbons on these data relies mainly on shapes and positions of hydrocarbon key absorption features, mainly at 1.73 µm and 2.30 µm. Shapes formed by these absorption features are often influenced by spectral features of background substrates, thereby limiting the quality of results. Furthermore, multispectral sensors cannot resolve the shapes of key absorption features, a strong limitation for methods used in previous works. In this study, we present Hydrocarbon Spectra Slope (HYSS), a new spectra index that offers predictive quantification and characterization of common hydrocarbon oils. Slope values for the studied hydrocarbon oils enable clear discrimination for relative quantitative analysis of oil abundance classes and qualitative discrimination for common hydrocarbons on common background substrates. Data from ground-based spectrometers and Airborne Visible/Infrared Imaging Spectrometer (AVIRIS) are resampled to AVIRIS, Advanced Space-borne Thermal Emission and Reflection Radiometer (ASTER) and LANDSAT 7 Enhanced Thematic Mapper’s (ETM+) Full Width at Half Maximum (FWHM), in order to compute spectra slope values for hydrocarbon abundance /hydrocarbon-substrate characterization. Despite limitations of nonconformity of central wavelengths and/or band widths of multispectral sensors to key hydrocarbon band, statistical significance for both quantitative and qualitative analysis at 95% confidence level (P-value ˂0.01) suggests strong potential of the use of HYSS, multispectral and hyperspectral sensors as emergency response tools for hydrocarbon mapping.
Study of Boalemo Red Limestone for Geotourism Development based on Lithological, Geochemical Analysis and Geological Heritage Assessment
Authors: Yusuf Nana Juhriana , Arifin Yayu Indriati , Hutagalung Ronal , Manyoe Intan Noviantari 
Published: October 2023

Indonesia has very diverse and unique rocks that have the potential to become a geological heritage. Based on the existing potential, an integrated management system is needed so that it can be utilized for the welfare of the community, one of which is a geopark. Gorontalo has a rock distribution consisting of several formations, one of which is the Tinombo Formation which is the oldest formation. In this formation there is red limestone which has great potential due to its rarity so that it can be developed into a site in the development of a geopark in Gorontalo. The purpose of this research is to conduct a geosite assessment of geological features in Boalemo Regency as a basis for developing geotourism in Boalemo Regency, Gorontalo. The research site is located in Dimito Village, Wonosari Subdistrict and Lahumbo Village, Tilamuta Subdistrict, Boalemo Regency, Gorontalo Province. The methods used in this research are lithological analysis, Geochemical analysis and geosite potential analysis using the technical guidelines for geological heritage resource assessment by the Geological Survey Center. The results showed that the red color-controlling minerals in limestone are hematite and rodoxite, the red color-controlling chemical elements in limestone are SiO2, MnO, Fe2O3, Sr and CaO. The results of the assessment of geological features explain that the Wonosari Red Limestone Site and the Tilamuta Red Limestone Site are included in the medium category. Geosite Red Limestone can be developed as an object of study in the field of education by utilizing natural laboratories for the development of geoparks in Gorontalo.
Mature Teratoma of The Lung : A Case Report
Authors: Wiratama Priangga Adi , Rahniayu Alphania , Ramadhani Vira Yasmina 
Published: October 2023

Background: Mature teratoma is a germinal cell tumor that is commonly found in ovaries and testis. Mature teratoma in the lung region is a rare case. According to the literature there are only 67 cases worldwide starting from 1939 to 2007. There were one cases in Dr. Soetomo general hospital during January 2013 – December 2017.Objective: Mature teratoma in the lung region is a rare case. Presenting in a case report would be beneficial for pathology databaseCase Presentation: A 19 years old man came to hospital with shortness of breath within 3 months ago. It was followed with hemoptysis, trichoptysis and coughing out tooth. CT Scan examination showed an irregular walled cavity with semisolid component and calcification along with a description of "air cresent sign". In thoracotomy tumor excision obtained multilobulated mass size 8.5x6,8x5,6 cm, yellowish-gray white color, and firm consistency. There were also hair and tooth components. The microscopic representation shows pieces of lung tissue with tumor growth coated with squamous epithel with a stroma containing adnexal skin glands, fatty tissue, cartilage tissue, and serous glands (asinar). Discussion: Mature teratoma of the lung is one of the rare tumors, with symptoms of chest pain, hemoptysis, and trichoptysis. Mature teratoma of the lung is generally cystic and multiloculated, but can also be solid, encapsulated. On microscopic examination, shows a picture of various components of ectoderm, mesoderm and endoderm.Conclusion: Mature teratoma of the lung is a rare tumor. Diagnosis was based from clinical findings, radiologic examination, and confirmed with histopathology and immunohistochemistry.
Herbal - Synthetic Drug Interactions
Authors: Kintoko Kintoko , Ananda Aghnia Nabila , Ridho Anisa Rifka , Makati Annisa Camellia , Yanti Asti Afrida , Wahyuni Dina , Maghfirah Yolanda Sajjida , Isnaini Isnaini 
Published: October 2023

Background: Herbal medicine is currently one of the therapeutic options chosen by the community because it is considered relatively safer and has minimal side effects. Not only used as a single drug, but herbal ingredients can also be combined with synthetic drugs. However, using herbal and synthetic drugs simultaneously can cause a variety of interactions, including synergism, antagonism, and additive effects (potentiation).Objective: Therefore, it is crucial to do a literature study on the reaction of various herbal medicines to unwanted synthetic drugs to prevent the adverse effects that can be caused.Methods: The literature review is processed based on academic journals published on NCBI, PubMed, and online journal sources that discuss the interactions between herbal medicines and synthetic drugs from 1997 to 2022.Results: Herbal drug interactions can be avoided or managed by providing correct patient advice based on reliable information.Conclusion:The main basic principles of administering these medicines include the doctor's full awareness of the effects and interactions between herbal medicines and herbal medicines and herbal medicines with synthetic drugs.
Teratomas Mediastinal Recurrent with Massive Pericardial Effusion
Authors: Lestari Lilik , Sultansyah Muhammad Harris Sis 
Published: October 2023

Background: Mediastinal teratoma is a medical rare disease that refers to the presence of a regrowing teratoma tumor in the mediastinum. At the pulmonary hospital dr. Ario Wirawan Salatiga, only one case was found, where the patient had previously been operated on at another hospital.Objective: The purpose of this paper was to contribute to the radiology literature by presenting a case of recurrent teratoma.Case Presentation: A 19-year-old male patient complained of persistent shortness of breath. The patient previously underwent teratoma surgery. The patient underwent chest X-rays, CT scans, abdominal and cardiac ultrasounds (USG), and as well as biopsies. The results of the CT scan found a teratoma-type mediastinal tumor accompanied by a large amount of pericardial effusion. A hyperechoic lesion with well-defined borders, round-oval, lobulated, and very large in size. Location in the mediastinum that is urgent and involves the left ventricle, right ventricle, left atrium, and right atrium. There is also an aortic compression lesion accompanied by calcification (+). Examination by ultrasonography (USG) of the heart found many pericardial but not found pressing. Heart valve function in patients did not show any abnormalities.Conclusion: Recurrent teratomas with large-volume pericardial effusions are rare. In this case study, a teratoma is located in the mediastinum. In this case, axial, coronal, and sagittal slices of a contrast thoracic CT scan can be used to establish the diagnosis. The results of heart USG found a pericardial effusion, the heart chambers do not collapse in this case of recurrent teratomas, indicating a mature teratoma type.
Foreign readers’ learning strategies for studying Ivan Goncharov’s novel “Oblomov” and Ivan Bunin’s poem “The Hollow Water is Raging …”
Authors: Marantsman E. К. 
Published: October 2023

The article deals with innovative methods of working with text in the process of studying Russian literature by international students. We present an integrative structure of working with text in Russian as a foreign language, which includes not only a special type of its analysis, but also the use of extra-text components. The article describes the technology of conducting a primary analysis of the text of fiction using questions on all spheres of readers’ perception. Such an innovative method of teaching the Russian language and culture to international students makes it possible to pay special attention to the methodological invariant of the implementation of literary works in various types of art as a linguodidactic technology focused on the cultural paradigm. The article shows the sequence of work with metaphor as the image-symbol of the whole literary work. It is this technique that allows you to find in the text an object that reflects the main concepts of the work. Thus, a multifaceted understanding of the complex works of Russian classical literature, necessary for a good literary education of international students, is carried out. We pay close attention to working with texts of large formats with a multi-vector distribution of meanings. We thoroughly describe the technology of working with poetic texts of classical Russian literature, which are both difficult to perceive and necessary to understand the peculiarities of Russian literature and the Russian soul.
Tatar appellatives in G. Yakhina’s novel “Zuleikha Opens Her Eyes”: polylinguality and transculturality
Authors: Salakhova A. R. 
Published: October 2023

The article is devoted to the linguocultural meanings of nationally specific forms of vocatives used by G. Yakhina in her novel “Zuleikha Opens Her Eyes”. The research object is the corpus of language units, used in G. Yakhina’s novel “Zuleikha Opens Her Eyes”, which are selected by continuous sampling from the first part of the novel. To analyze the studied units (appellatives), we use the descriptive and comparative methods, the method of word-formation, component and contextual analyses, as well as the method of quantitative calculation. To reconstruct the world of the Tatar village, the Russian-speaking writer uses a variety of appellative words (exoticisms, diminutives, evaluative forms, etc.), which do not always adequately appeal to the content of the Tatar linguocultural discourse. In the present article, we examine appellatives, in the unity of their form and content, as units of a particular literary text in order to identify their semantic specificity, stylistic and linguocultural affiliation, while taking into account the context of their use. The transformation and substitution of linguistic units, associated with the national specificity of the linguistic picture of the world, prevents adequate and accurate perception of Tatar linguistic culture when the author creates artistic images in her novel, or subsequently conveys the meaning in translation. Thus, the article shows how the words of a foreign culture are introduced into the text and what consequently happens to the meanings they convey.
Transformation of an autobiographical narrative in Russian gender-marked prose of the 1990s-2020s
Authors: Breeva T. N. 
Published: October 2023

An autobiographical narrative has been an integral feature of women’s writing throughout the existence of women’s literature. At the present stage, within the framework of gender-marked prose, its functional field is expanding. The transformation of the autobiographical narrative in the works of the 1990s - 20s is due to the very process of the gender-marked literature formation. In this regard, we can talk about two main options for its functioning. On the one hand, the autobiographical narrative is presented as an expression of a certain femme agenda, starting from the ideology of sisterhood, which was significant for Russian fem literature of the 1990s and early 2000s, and ending with the ideas of intersectional feminism, which are relevant for the circle of authors of the late 2010s and early 2020s. On the other hand, the dynamics of the autobiographical narrative makes it possible to trace the process of the formation of a kind of “canon” in gender-marked prose, which allows not only differentiating it in relation to the literature of the grand canon, but also identifying its specificity in the context of all female prose.In this regard, it is appropriate to talk about three variants of the autobiographical narrative transformation, coinciding with three fairly distinct periods in the formation of Russian gender-marked prose. At the first stage, the functioning of the autobiographical narrative marks the gender nature of the text, emphasizing not just the deliberate marginality and peripheralness of the narrative instance, but, mainly, its ability to convey a unique female experience. At the second stage, the autobiographical narrative participates in the formation of a gender-oriented reading model as the basis for the “crystallization” of the female narrative canon. At the third stage, the plot acting out of the narrative model takes place.
Dijitalleşmenin Denetim Ücretlerine Yansımalarının Araştırılması
Authors: HATUNOĞLU Zeynep , GÜNGÖR KARYAĞDI Nazan 
Published: October 2023

Öz
Dijitalleşme ve bilgi teknolojisindeki gelişmeler işletmeleri ve işletmelerin iş yapma şeklini de etkilemiştir. Bu etki her alanda olduğu gibi denetim alanında da köklü değişim ve dönüşümlere yol açmıştır. Bu değişim ve dönüşüm ile yapay zekâ, bulut bilişim, blockchain teknolojisi gibi gelişmelerin denetim sürecine yansıtılması, kullanılan teknolojilerle ilgili personellerin eğitilmesi, işlemlerin mobil uygulamalarla entegre edilerek gerçekleştirilmesi vb. çalışmaların denetim ücretlerine etkisinin olup olmadığı merak konusu olmuştur. Bu nedenle çalışmada, dijitalleşmenin denetim ücretlerine yansımalarının ortaya çıkarılması amaçlanmıştır. Diyarbakır’da faaliyet gösteren denetçilerle görüşme tekniği yoluyla gerçekleştirilen çalışmada nitel veri analiz yöntemi kullanılmış olup elde edilen veriler betimsel desenle analiz edilmeye çalışılmıştır. Denetçilerin bakış açılarının incelendiği çalışmada, yapay zekâ, bulut bilişim gibi uygulamaların ya da farklı yazılımların kullanılması, teknolojiye uyum sağlamak için personellerin eğitilmesi, siber saldırılara karşı yapılan çalışmaların denetim ücretlerini arttırıcı bir etkiye sahip olduğu sonucu ortaya çıkmıştır. Ayrıca çalışmada mobil uygulamalarının denetim ücretlerine bir etkisinin olmadığı, hazırlanan denetim raporlarının dijital ortamlarda saklanmasının maliyeti /denetim ücretlerini etkilediği ve dijitalleşme sürecine uyum sağlamak için çeşitli girişimlerde bulunanların olduğu gibi herhangi bir girişimi olmayanların da var olduğu tespit edilmiştir.

Anahtar Kelimeler: Denetim, Denetim Ücretleri, Dijitalleşme, Denetçi, Denetim Süreci
JEL Kodları: M40, M41, M42
EXPERIMENTAL PRACTICES BY PRINTMAKERS IN THE WORLD OF PRINTMAKING
Authors: Hajare Dr. Sachin Ramrao 
Published: October 2023

Printmaking (Chhapa Kala) has evolved beyond paper-based prints and has encompassed a broader spectrum of artistic expressions. The world of printmaking witnesses the innovative experiments of numerous artists today, each contributing their unique endeavors. Printmakers are no longer confined by strict rules and are embracing a more versatile and expressive form of printmaking. Today's printmakers are taking a step forward and are diligently working in the realm of printmaking, progressing beyond the confines of traditional printmaking. Printmakers are exploring different mediums with enthusiasm, uncovering new possibilities, and pushing the boundaries of what printmaking can achieve. The traditional distinctions between established, conventional, and unconventional printmaking are being blurred, allowing for a more dynamic and liberated interpretation of the art form. In actuality, the term 'printmaking' itself is undergoing a redefinition, with new rules being formulated.
It appears that, in today's artistic landscape, there is a growing recognition of the need to reconsider established norms and rules in printmaking. Research in this context has been extensively conducted, analyzing the various aspects and techniques involved. This study delves into the realm of Chhapa Kala, exploring its widespread influence and its integration into the broader world of art."