bluuebunny/crossref_metadata_2025 huggingface dataset:
Ocular manifestations of Wegener's granulomatosis
Authors:   Ufa Eye Research Institute, Ufa, Russian Federation, Babushkin A.E. , Israfilova G.Z. ,   Ufa Eye Research Institute, Ufa, Russian Federation
Published: November 2023

Wegener's granulomatosis, also called granulomatosis with polyangiitis, is a primary systemic necrotizing vasculitis of small and medium-sized vessels with the formation of granulomatous inflammation. This is a severe, progressive disease, presumably of autoimmune nature, which without basic treatment – immunosuppressive therapy (suppression of disease activity, remission maintenance and episodic therapy) can lead to the death of the patient. Upper respiratory tract, eye, lung and kidney lesions prevail in the clinical picture of Wegener's granulomatosis. Ocular manifestations often appear at early stages of the disease and are associated with upper respiratory tract and/or middle ear inflammation. Wegener's granulomatosis can affect any segment of the eye, most often the anterior segment and much less often the posterior, and can present in the form of minor and moderate ocular inflammation (scleritis, keratitis, etc.) or severe disorders of all structures and orbits (pseudotumour) leading to low vision and even blindness. Difficulties in the diagnosis of Wegener's granulomatosis arise from a variety of forms and ways of clinical progression at early stages of the disease, when ophthalmic changes are not very specific. In order to establish the correct diagnosis, it is necessary to compare biopsy results (characterized by granulomatous inflammation and vasculitis of small vessels, areas of necrosis) with clinical laboratory assessments. The refractory course of pathological process in the orbit, eye and its appendages, especially if the patient has some atypically occurring pathological processes in the upper respiratory tract and/or sinuses and lungs, should be a warning sign for a doctor to use an interdisciplinary approach for the diagnosis and treatment. Key words: Wegener's granulomatosis, granulomatosis with polyangiitis, systemic necrotizing vasculitis, eye disorder, scleritis, orbital pseudotumour
Surgical treatment of of primary corneal dystrophies
Authors:   Ufa Eye Research Institute, Ufa, Russian Federation, Usubov E.L. , Valishin I.D. ,   Ufa Eye Research Institute, Ufa, Russian Federation, Titoyan K.K. ,   Ufa Eye Research Institute, Ufa, Russian Federation, Israfilova G.Z. ,   Ufa Eye Research Institute, Ufa, Russian Federation
Published: November 2023

Primary corneal dystrophies management should be aimed at eliminating the main complaints of the patient and be based on the correct diagnosis of the type of dystrophy, assessment of the volume of stromal tissue lesions, as well as the risk of disease recurrence. Among modern methods of surgical treatment of corneal dystrophies, phototherapeutic keratectomy, lamellar and penetrating keratoplasty are most widely used. The main goal of surgical treatment is to maintain the transparency of optical media, increase visual functions and improve the quality of life of patients, and the volume and type of surgery should be minimized and be sparing. The choice of surgical approach and volume of surgical intervention is determined depending on the severity of corneal opacity and the type of dystrophy. The article presents an assessment of the effectiveness of various surgical approaches to treatment on two clinical cases in patients with some forms of anterior corneal dystrophies, in particular, granular stromal dystrophy types I and II. Key words: primary corneal dystrophies, granular dystrophy, surgical treatment, phototherapeutic keratectomy, anterior lamellar keratoplasty
Changes in choroidal thickness in the treatment of primary angle closure
Authors:   The Department of Eye Diseases at the Medical Biological University of Innovations and Continuing Education of the Federal Biophysical Center named after A.I. Burnazyan, Moscow, Russian Federation, Kurysheva N.I. ,   Diagnostic Department of the Ophthalmological Center of Federal Medical-Biological Agency of Russia, Moscow, Russian Federation, Sharova G.А. ,   Ophthalmology Clinic of Dr. Belikova, Moscow, Russian Federation, Belikova E.I. ,   Ophthalmology Clinic of Dr. Belikova, Moscow, Russian Federation,   Advanced Training Academy of Federal Medical and Biological Agency, the Chair of Ophthalmology, Moscow, Russian Federation
Published: November 2023

Purpose. To compare choroidal thickness before and after laser peripheral iridotomy (LPI) and lens extraction (LE) in patients with primary angle closure (PAC). Material and methods. The prospective study included 60 patients (60 eyes) with PAC aged 41 to 80 years. LPI was performed in 30 eyes, LE was performed in 30 eyes. All patients underwent Swept Source optical coherence tomography. The parameters of the anterior and posterior segments of the eye were analyzed including the choroidal thickness in the macula (in foveola, in diameters of 1 mm, 2 mm and 3 mm from it) as well as intraocular pressure (IOP) and number of medicines. Results. After LE, choroidal thickness significantly increased (from 341±59 to 345±57 µm, p=0.000) in the foveola as well as in all sectors (p<0.05) except for the nasal one, 3 mm from the center of the foveola (p=0.05). After LPI, choroidal thickness significantly increased in all sectors (all p<0.05) except for the superior (p=0.124) and temporal (p=0.103) sectors 3 mm from the center of the foveola as well as in the foveola itself (from 343±58 to 341±60 µm, p=0.519). There was no significant difference in choroidal thickness in the macula between the groups after treatment (all p>0.05). Conclusion. An increase the choroidal thickness in patients with PAC after LPI and LE suggests the involvement of the choroid in the mechanisms of the hypotensive response to the treatment. Key words: primary angle closure, SS-OCT, choroidal thickness, laser peripheral iridotomy, lens extraction
Three Faces of Medieval English Motet
Authors: Теплова А.С.
Published: November 2023

Средневековый английский мотет принадлежит кпериферийным жанровым ответвлениям и до сих пор недостаточно изучен. Лишь с 1909 года стали находить плохо сохранившиеся рукописные источники и по их фрагментам восстанавливать мотеты. Только с 1957 года началась их публикация, открывшая оригинальные подходы к жанру. Помимо создававшихся под материковым влиянием изоритмических мотетов, востровном репертуаре обнаружились иные технические решения: мотеты с гласообменом имотеты на cantus medius (проблемы неаутентичной терминологии в статье обсуждаются параллельно с характеристикой названных феноменов). Фундаментальные жанровые основы у всех этих разновидностей общие: вокальное многоголосие, латинский текст (преимущественно духовного содержания), преобладающая политекстовость, опора на заимствованный первоисточник как норма, допускающая исключения. Однако различная техника композиции (изоритмия, гласообмен, cantus medius) меняет их облик значительно, вплоть до неузнаваемости. Установленные в статье критерии сравнения разъясняются в процессе анализа изоритмического мотета Дж. Алейна и двух анонимных мотетов: с гласообменом и на cantus medius.

The medieval English motet belongs to the peripheral branches of the genre and is still insufficiently studied. Only since 1909, poorly preserved handwritten sources began to be discovered and motets were reconstructed from their fragments. It was only in 1957 that their publication began, revealing original approaches to the genre. In addition to the isorhythmic motets created under mainland influence, other technical solutions were discovered in the island repertoire: motets with voice exchange and motets on the cantus medius (the problems of inauthentic terminology are discussed in the article in parallel with the characteristics of these phenomena). The fundamentals of all these genre varieties are common: vocal polyphony, Latin text (mainly of spiritual content), predominant polytextuality, reliance on a borrowed primary source as a norm that allows exceptions. However, different composition techniques (isorhythm, voice exchange, cantus medius) significantly change their appearance to the point of being unrecognizable. The comparison criteria established in the article are explained during the analysis of the isorhythmic motet by J. Aleyn and two anonymous motets: with voice exchange and on cantus medius.
«Heilig» для двойного хора К.Ф.Э. Баха BR-CPEB F 77: неизвестное Пастиччо 1785 года
Authors: Shabalina T.V.
Published: November 2023

The article focuses on the first study of the source found in the Foreign Books Department of the National Library of Russia. The printed booklet contains the original text of the work performed in the Dreyfaltigkeitskirche in Berlin in 1785 under Johann Christoph Kühnau (1735–1805), a cantor and music director. It is revealed, that the libretto gives evidence of a hitherto unknown Pasticcio compiled from the famous “Heilig” for double choir by Carl Philipp Emanuel Bach (1714–1788) and his Aria “Wie prächtig wird dein Lob erschallen”, as well as some movements from the Oratorio “Das Weltgericht” and “Te Deum” by J. C. Kühnau. Based on the research of the existing letters, manuscripts, and other sources along with the printed text of 1785 the conclusion about Kühnau’s role in distribution and popularization of vocal works by “Hamburg Bach” in the late 18th century is drawn. One more important fact concerning the early reception history of “Heilig” BR-CPEB F 77 is added to our knowledge of its performances during the author’s life-time.

В статье впервые исследуется источник, найденный в Иностранном книжном фонде Российской национальной библиотеки и содержащий текст сочинения, исполненного в Троицкой церкви Берлина в 1785 году под руководством кантора и «музикдиректора» Иоганна Кристофа Кюнау (1735–1805). Выявляется, что либретто относится к неизвестному ранее Пастиччо, созданному из знаменитого «Heilig» для двойного хора Карла Филиппа Эмануэля Баха (1714–1788), его Арии «Wie prächtig wird dein Lob erschallen», а также частей из оратории «Das Weltgericht» и «Te Deum» И. К. Кюнау. На основе изучения печатного текста 1785 года, сохранившихся писем, рукописей и других источников делается вывод о роли Кюнау в распространении и популяризации вокальных произведений «гамбургского Баха» в конце XVIII века. К истории исполнения «Heilig» BR-CPEB F 77 добавляется еще один важный факт ранней истории его рецепции при жизни автора.
Navigating the Unkown With AI: Multiobjective Bayesian Optimization of Non-Noble Acidic OER Catalysts
Authors: Jenewein Ken , Torresi Luca , Haghmoradi Navid , Kormányos Attila , Friederich Pascal , Cherevko Serhiy
Published: November 2023

Experimental catalyst optimization is plagued by slow and laborious efforts. Finding innovative materials is key to advancing research areas for sustainable energy conversion, such as electrocatalysis. Artificial intelligence (AI)-guided optimization bears great potential to autonomously learn from data and plan new experiments, identifying a global optimum significantly faster than traditional design of experiment approaches. Furthermore, it is vital to incorporate essential electrocatalyst features such as activity and stability into the optimization campaign to screen for a truly high-performing material. In this study, a multiobjective Bayesian optimization (MOBO) was used in conjunction with an experimental high-throughput (HT) pipeline to refine the composition of a non-noble Co-Mn-Sb-Sn-Ti oxide toward its activity and stability for the oxygen evolution reaction (OER) in acid. The viability of the MOBO algorithm was verified on a gathered data set, and an acceleration of 17x was achieved in subsequent experimental screening compared to a hypothetical grid search scenario. During the ML-driven assessment, Mn-rich compositions were critical to designing high-performing OER catalysts, while Ti incorporation into MnOx triggered an improved activity after short accelerated stress tests. To examine this finding further, an operando mass spectrometry technique was used to probe the evolution of activity, metal dissolution, and surface area over 3 h of operation. This work demonstrates the importance of respecting the multiobjective nature in electrocatalyst performance during HT campaigns. AI-based decision-making helps to bridge the gap between fast HT screening (limited property extraction) and slow fundamental research (rich property extraction) by avoiding less informative experiments.
Triple-photoinduced electron transfer (tri-PET) catalysis for activation of super strong bonds
Authors: Biswas Amit , Kolb Simon , Röttger Sebastian , Das Arpan , Patalag Lukas J. , Sil Swagata , Maji Subir , Chakrabarty Soumi , Bhunia Anup , Werz Daniel B. , Mandal Swadhin K.
Published: November 2023

Single electron redox processes allow the formation of highly reactive radicals – valuable intermediates that enable unique transformations in organic chemistry (1,2). An established concept to create radical intermediates is photoexcitation of a catalyst to a higher energy intermediate, subsequently leading to a photoinduced electron transfer (PET) with a reaction partner (3–7). The known concept of consecutive photoinduced electron transfer (con PET) leads to catalytically active species even higher in energy by the uptake of two photons (8). This process has already been used widely for catalytic reductions; however, limitations towards strong bonds and electron rich substrates remain (9,10). Generally speaking, increased photon uptake leads to a more potent reductant. Here, we introduce triple-photoinduced electron transfer catalysis, termed tri-PET, enabled by the three-photon uptake of a dye molecule leading to an excited dianionic super-reductant which is more potent than Li metal (11) – one of the strongest chemical reductants known. Irradiation of the metal-free catalyst by violet light enables the cleavage of strong carbon-fluoride bonds and reduction of other halides even in very electron-rich substrates. The resulting radicals are quenched by hydrogen atoms or engaged in carbon-carbon and carbon-phosphorus bond formations, highlighting the utility of tri-PET for organic chemistry. Thorough spectroscopic, chemical and computational investigations are presented to understand this novel mode of photoredox catalysis. The existence of the dianion which takes up a third photon when irradiated was proven by X-ray diffraction analysis.
Understanding the effects of forced and bubble-induced convection in transport-limited organic electrosynthesis
Authors: Bloomquist Casey , Dogan Melisa , Harris James , Herzog Benjamin , Tenn William , Aydil Eray , Modestino Miguel
Published: November 2023

Organic electrosynthesis offers a sustainable path to decarbonize the chemical industry by integrating renewable energy into chemical manufacturing. However, achieving the selectivity and energy efficiency required for industrial applications is challenging due to the inherent mass transport limitations. Convection can mitigate mass transport limitations, but its impact on organic electrochemical processes remains poorly understood. We investigate the interplay between mass transport and electrochemical reaction rates under convective flows in the context of the electrosynthesis of adiponitrile, one of the largest organic electrochemical processes in the industry. We use experiments and data-driven predictive models to demonstrate that forced liquid convection and bubble-induced convection produce near-identical mass transport conditions when the corresponding Sherwood numbers—the ratio of convective mass transport to diffusive mass transport—are equal. Moreover, we show that the Faradaic efficiency (i.e., the electrochemical selectivity) scales with the Sherwood number for a given current density and reactant concentration. This scalability enables performance to be predicted irrespective of the convection mode employed to enhance mass transport. Our results provide a deeper understanding of mass transport in organic electrosynthesis and offer guidelines to enable more sustainable chemical manufacturing practices.
Electro-Oxidative Platform for Nucleophilic α-Functionalization of Ketones
Authors: Mondal Rakesh , Jacob Nicolas , Devuyst Maxime , Quertenmont Mathilde , Averochkin Gleb , Deri Stav , Galmidi Lior , Gordon-Levitan Daniel , Feller Moran , Vantourout Julien C. , Echeverria Pierre- Georges , Gnaim Samer
Published: November 2023

The significance of α-functionalization of carbonyl compounds arises from its frequent use in synthetic organic chemistry. Consequently, there is a substantial and constant demand for the creation of strategies that facilitate the efficient execution of such valuable transformation. In this context, herein is presented a universal electrochemical oxidative platform for the α- derivatization of ketones with nucleophiles, employing an umpolung reactivity. This approach has been successfully employed in five distinct transformations involving C-C and C-X bond formation via straightforward nucleophilic substitution or cycloaddition reaction pathways. Furthermore, the implementation of this methodology in flow using a commercially available reactor demonstrated its inherent scalability.
A dual photobase system for directing the pathway of pH-sensitive chemical reactions with light
Authors: Yucknovsky Anna , Amdursky Nadav
Published: November 2023

Light-gated chemical reactions allow spatial and temporal control of chemical processes. Here, we suggest a new system for controlling pH-sensitive processes with light using two photobases of Arrhenius and Brønsted types. Only after light excitation do Arrhenius photobases undergo hydroxide ion dissociation, while Brønsted photobases capture a proton. However, none can be used alone to reversibly control pH due to the limitations arising from excessively fast or overly slow photoreaction timescales. We show here that combining the two types of photobases allows light-triggered and reversible pH control. We show an application of this method in directing the pH-dependent reaction pathways of the organic dye Alizarin Red S simply by switching between different wavelengths of light, i.e., irradiating each photobase separately. The concept of a light-controlled system shown here of a sophisticated interplay between two photobases can be integrated into various smart functional and dynamic systems.
Manipulating the electronic properties and structure of MoO3 nanosheets with light via an excited-state proton transfer mechanism
Authors: Gilad Barzilay Yuval , Yucknovsky Anna , Amdursky Nadav
Published: November 2023

Light is an attractive source of energy to regulate stimuli-responsive chemical systems, enabling control over chemical and physical processes. Here, we use light as a gating source to control the redox state, the formation of a localized surface plasmonic resonance (LSPR), and the structure of molybdenum oxide (MoO3) nanosheets, which are important for a wide array of applications. However, the light excitation is not of the MoO3 nanosheets but rather of a pyranine (HPTS) photoacid, which in turn undergoes an excited state proton transfer (ESPT) process. We show that the ESPT process from HPTS to the nanosheets and the intercalation of protons within the MoO3 nanosheets triggers the reduction of the nanosheets and the formation of an LSPR peak, a process that is reversible, meaning that in the absence of light, the LSPR peak disappears and the nanosheets return to their oxidized form. We further show that this reversible process is accompanied by a change in the nanosheet size and morphology.
Group 14 Metallocene Catalysts for Carbonyl Hydroboration and Cyanosilylation
Authors: Robertson Haley , Fujiwara Mallory , Liberman-Martin Allegra
Published: November 2023

A series of six Group 14 metallocene compounds (M = Ge, Sn, Pb) were studied as catalysts for carbonyl hydroboration and cyanosilylation reactions at room temperature. Both bis(pentamethylcyclopentadienyl) and tetramethyldisiloxa[3]metallocenophane compounds were compared. The tin and lead metallocenophanes exhibited the highest reactivity in hydroboration and cyanosilylation reactions. Hammett analysis of aldehyde hydroboration provided a rho value of 0.73, suggesting a buildup of negative charge during the turnover-limiting step, consistent with the transition state for hydride transfer to the carbonyl center. NMR studies of Lewis acidity indicate that the Ge, Sn, and Pb tetramethyldisiloxa[3]metallocenophane compounds are weak Lewis acids.
Thermal conversion of aviation oils
Authors: Shaporova E. A. , Vasilevich S. V. , Stoiko S. O. , Shchur V. V.
Published: November 2023

These days, strict requirements to aeronautical equipment are imposed to enhance reliability, durability, and environmental compatibility. Aeronautical equipment operation reliability depends not only on its structural and technologic abilities, but also on the fact how aviation oils, fuels and technical fluid meet quality requirements during operation. During the aircraft engine operation, oils are subjected to the thermal impact. As a consequence, their properties and composition change which can affect the engine operation, on the whole. The most promising means of improving thermal resistance of aviation oils is developing new ones and improving available oil compositions. Therefore, it is feasible to analyze the kinetic properties of the oil thermal conversion which will make it possible to predict their resistance within the extensive temperature range. The paper investigates thermal decomposition kinetics of aviation oils MS-8P, TN-98 and TN-600 used on different types of aircraft in civil aviation of the Republic of Belarus by the method of a thermo-gravimetric analysis. The composition of oil samples has been researched into by IR spectroscopy, chromatography-mass spectroscopy methods. A comparative analysis of research results of new oils and oils drained from aircraft engines indicates that even under insignificant overheat during the operation, a change in the hydrocarbon composition occurs, and the hydrocarbon content of basic types varies to some extent. The oil thermolysis research reveals that potential overheat after engine shutdown complies with the temperatures at which the decomposition commences. Thermal conversion products of oil carbohydrates will contribute to the defect formation in friction subunits. As a result of test data processing of thermal conversion of aviation oils MS-8P, TN-98, TN-600, the principles of their decomposition as well as macrokinetic parameters, allowing us to precisely evaluate the effect of oils operation temperature conditions on their conversion rate, have been specified. It is essential while simulating the aircraft engine operation and predicting variations of oil quality properties during their operation.
Development of the Listvyanka, Buguldeyka, and Olkhon-Priolkhonye Monitoring Polygons of the Baikal: Prospecting Study of Trace Elements and U Isotopes in Waters from Rivers and Groundwaters
Authors:   Institute of the Earth's Crust SB RAS, Chebykin E.P. ,   Limnological Institute SB RAS, Rasskazov S.V. ,   Institute of the Earth's Crust SB RAS,   Irkutsk State University, Ilyasova A.M. ,   Institute of the Earth's Crust SB RAS, Snopkov S.V. ,   Irkutsk State University,   Siberian School of Geosciences, Kovalenko S.N. ,   Irkutsk State University
Published: November 2023

The results of prospecting studies of trace elements and activity ratio 234U/238U (АR4/8) in surface waters and groundwaters from the Listvyanka, Buguldeyka, and Olkhon-Priolkhonye polygons of integrated monitoring, organized since 2020, are presented. At the Listvyanka polygon, wide interval of АR4/8 from 1.67 to 2.5 is obtained for groundwater in the Bolshie Koty village, at the Buguldeyka and Olkhon-Priolkhonye polygons that are located in the zone of the Primorsky fault – an interval of AR4/8 from 1.25 to 2.70. These values is general characteristic of large active faults of the central Baikal Rift Zone. Water from the Buguldeyka River differs in terms of both trace element compositions and AR4/8 values from those of its tributary Kurtun due to location of these rivers basins in rocks of the exposed basement of the Siberian Platform and its sedimentary cover, including evaporate carbonate sediments. On the Olkhon island, determined is groundwater that differs in elemental composition from the deep Baikal water.
Relationship between timing of earthquakes of the Baikal-Khubsugul reactivation and oxidation–redox potential in groundwaters from the Kultuk polygon
Authors:   Institute of the Earth's Crust SB RAS, Rasskazov S.V. ,   Irkutsk State University, Chuvashova I.S. ,   Institute of the Earth's Crust SB RAS,   Irkutsk State University, Yasnygina T.A. ,   Institute of the Earth's Crust SB RAS, Saranina E.V. ,   Institute of the Earth's Crust SB RAS,   A.P. Vinogradov Institute of Geochemistry SB RAS, Bokareva A.A. ,   Irkutsk State University
Published: November 2023

The purpose of this study is to establish relationship between a source for final eruptions on the Dzotol volcano and those for the whole preceded Late Cenozoic volcanism in the Dariganga field. Major oxides, trace elements, and Pb isotopic ratios in rocks of the volcanic field are indicative for generation of magmatic melts in a homogeneous mantle region. In final eruptions of the Dzotol volcano, rocks show, on the one hand, intermediate geochemical signatures relative to those of other Dariganga volcanic rocks, and, on the other hand, lower Pb isotope ratios. We infer that Dariganga volcanic rocks were derived due to deep degassing of the about 4.47 Ga protomantle and were dispersed at the asthenospheric–lithospheric boundary affected by transtension. The source for the final Dzotol rocks corresponded in depth to the central part of the magma-generating region and displayed the Pb-isotopic protomantle component, previously designated in rare Quaternary Dariganga rocks.
Breakthrough in Research and Dating of Latest Volcanism in the Baikal Rift System and its Significance for Understanding Latest Geodynamics of Asia
Authors:   Irkutsk State University, Chuvashova I.S. ,   Institute of the Earth's Crust SB RAS, Rasskazov S.V. ,   Irkutsk State University,   Institute of the Earth's Crust SB RAS
Published: November 2023

The history of studying and dating the latest volcanism of the Baikal Rift System (BRS) is conventionally divided into stages: 1) until the 1950s (discovery of young volcanoes), 2) 1950–1960s (primary determination of the age of the Cenozoic volcanogenic-sedimentary sequences using paleontological data), 3) 1970–1980s (determination of sequence of volcanic strata in the development of relief and pioneering radioisotope dating of volcanic rocks), 4) 1980–2005 (growth of geochronological and geochemical data on volcanic areas of Asia), and 5) 2005–2023 (synthesis of geochronological and geochemical data). The breakthrough in studying and dating of latest volcanism in the BRS resulted in substantiation of the development of mantle melting anomalies in the Japan–Baikal Geodynamic Corridor (JBGC) and its overlap by the Indo-Asian Convergence Region. A breakthrough in studying and dating of volcanic rocks that occurred by 2012 was basically confirmed by mass 39Ar/40Ar dating of 2018 in Central Mongolia.
Studies of geologist A.V. Lvov on the Circum-Baikal railroad
Authors:   East Siberian Railroad - branch of JSC ", Khobta A.V. ,   Russian Railways"
Published: November 2023

The article deals with the activities of geologist A.V. Lvov during the survey work of the Circum-Baikal railroad and at the beginning of operation of the Transbaikal railroad. A detailed survey of the outcrops formed during the construction of the railroad made it possible to refute the previously proposed conclusions of mining engineers and to give detailed recommendations on the protection of the railroad bed from rockfalls, both during construction and at the beginning of the operation of the railroad. Along with geological studies, work was done to determine the sources of water inflow into the most problematic tunnel on the railroad.
History of geological study of the Botogol graphite deposit
Authors:   Irkutsk State University, Snopkov S.V. , Khobta A.V. ,   East Siberian Railroad - branch of JSC "Russian Railways", Bogdanova I.A. ,   Irkutsk State University
Published: November 2023

The Botogol graphite deposit, located in the Eastern Sayan Mountains, is of interest not only because of its rich ores, but also because of the rich history of its study. Since the discovery of graphite manifestations on the Botogol mountain in the first half of the 19th century, the study of its structure and genesis has been underway. It took more than a century of prospecting and exploration and exploitation works to get an idea of the geology of this deposit. The history of the study of this unique deposit is considered in the article.
Studi Penerapan Sistem Manajemen Mutu ISO 9001 pada Industri Konstruksi di NTT
Authors: Prasinda Yulita , Kaming Peter F.
Published: November 2023

Provinsi Nusa Tenggara Timur yang merupakan salah satu provinsi di Indonesia yang saat ini sedang mengalami perkembangan signifikan dalam industri konstruksi. Dengan melihat kebutuhan  perusahaan  jasa  konstruksi  dalam  meningkatkan mutu produk (barang/jasa) saat ini, maka dibutuhkanlah  sistem  manajemen  mutu  yang  baik.  Penelitian ini dilakukan untuk melihat bagaimana penerapan sistem manajemen mutu ISO 9001 di Provinsi Nusa Tenggara Timur dan juga mengkaji mengenai perbedaan presepsi yang ada dari stakeholder tentang manfaat, hambatan dan juga motivasi dalam menerapkan sistem manajemen mutu berbasis ISO 9001. Hasil dari penelitian ini menunjukkan bahwa pada penilaian penerapan sistem manajemen mutu ISO 9001 di Provinsi NTT masih berada ditingkat sedang. Dalam kajian perbedaan presepsi, setiap stakeholder memiliki presepsi yang berbeda mengenai manfaat, hambatan, dan juga motivasi dalam menerapkan sistem manajemen mutu berbasis ISO 9001.
Kajian Tekno Ekonomi pada Pembangunan Jalur Ganda Rel Kereta Api Segmen Tanjungkarang-Kotabumi di Provinsi Lampung
Authors: Juwindi Reta Mayola , Usman Kristianto , Siregar Amril , Junaedi Tas'an
Published: November 2023

Provinsi Lampung merupakan daerah yang memiliki frekuensi kereta api yang cukup padat. Untuk meningkatkan pelayanan KA, pemerintah berencana meningkatkan fasilitas melalui pembangunan segmen Tanjungkarang-Kotabumi. Sebelum masuk ke tahap pembangunan tentunya harus ada analisis kelayakan terlebih dahulu baik dari aspek kelayakan ekonomi maupun finansial. Hal tersebut dimaksudkan untuk mengetahui apakah jalur ganda ini layak atau tidak dilanjutkan ke tahap selanjutnya. Penelitian ini menitikberatkan pada kajian tekno ekonomi dengan menggunakan parameter NPV, IRR dan BCR sehingga dapat diambil kesimpulan bahwa pengembalian modal pada pembangunan jalur ganda ini berkisar antara 7 dan 13 tahun. Kajian ini dimulai dari mengumpulkan data, kemudian menghitung estimasi biaya proyek, lalu analisis data dan dilanjutkan pada analisis kelayakan ekonomi dan finansial sehingga menghasilkan 12 skenario dengan berbagai asumsi. Dari 12 skenario didapatkan hasil terbaik pada skenario optimis 4 dengan asumsi nilai tingkat inflasi 3%, dan Track Access Charges 40% menunjukkan nilai NPV, IRR, dan BCR sebesar Rp23.572.331.832.990; 26,03%; dan 4,40. Dari 12 skenario telah menunjukkan bahwa semuanya telah mencapai syarat layak ekonomi dan finansial yaitu NPV>0, IRR>Rate of Return, dan BCR>1 dan dinyatakan bahwa proyek pembangunan jalur ganda rel kereta api Tanjungkarang-Kotabumi ini layak dilanjutkan ke tahap DED karena memberikan kontribusi besar untuk negara.
Generalized almost periodic solutions of Volterra difference equations
Authors: Kostic Marko , Koyuncuoğlu Halis Can
Published: November 2023

In this paper, we investigate several new classes of generalized $\rho$-almost periodic sequences in the multi-dimensional setting. We specifically analyze the class of Levitan $\rho$-almost periodic sequences and the class of remotely $\rho$-almost periodic sequences. We provide many important applications of the established theoretical results to the abstract Volterra difference equations.
Mild solutions for some nonautonomous evolution equations with state-dependent delay governed by equicontinuous evolution families
Authors: Kpoumié Moussa El-Khalil , Djeunankam Yannick-Levis , Mbang Joseph , Noundjeu Pierre
Published: November 2023

In this work, we study the existence solutions and the dependence continuous with the initial data for some nondensely nonautonomous partial functional differential equations with state-dependent delay in Banach spaces. We assume that the linear part is not necessarily densely defined, satisfies the well-known hyperbolic conditions and generate a noncompact evolution family. Our existence results are based on Sadovskii fixed point Theorem. An application is provided to a reaction-diffusion equation with state-dependent delay.
Development of bioinspired structure with impact absorption capability: a study of case
Authors: de Oliveira Antônio Roberto Miranda , de Arruda Amilton José Vieira , de Arruda Emília Cristina Pereira
Published: November 2023

The development of new materials is crucial for the advancement of engineering, architecture, and design fields. This is because new materials can offer significant benefits compared to traditional materials in terms of their structural, physical, and chemical properties. In architecture and design, new materials can be used to create more durable, sustainable, aesthetically pleasing, lightweight, and resilient products. Through biomimicry, this study conducted an analysis on the structures of four tropical fruits - orange, passion fruit, cocoa, and pomegranate - to generate a new structure with damping and energy dissipation properties, aided by scanning electron microscopy (SEM), computerized microtomography (Micro-CT), and computerized three-dimensional reconstruction. As a result, a bioinspired structure was developed based on the arrangements of cell walls found in the albedo (mesocarp) of the orange - Citrus sinensis. Using this developed structure, computational tests were performed and a resin prototype was created through digital fabrication. Therefore, the development of bioinspired materials for improved impact absorption and damping is important as it can enhance the safety and effectiveness of a wide range of products, from sports equipment to medical devices, while also contributing to sustainability and energy efficiency, which are significant interests in various fields of knowledge.
Socio-environmental sustainability and Upcycling of health service waste towards sustainability: Reuse of Spundbond Meltblown Spundbond (SMS)
Authors: Nogueira Danielly Negrão Guassu , Mota Laryssa Guilherme , Martins Suzana Barreto , Massi Fernanda de Oliveira , Galhardo Viviane
Published: November 2023

This work aimed to define the steps for the Safe Capture of postconsumer Spundbond Meltblow Spundbond (SMS) non-woven fabric, and to estimate the generation of this material providing conditions for new uses through upcycling in a Surgical Center of a public hospital for means of application in socio-environmental projects. This is a descriptive, exploratory longitudinal study with a quantitative approach. As a result, a proposition was obtained for a new separation system for specific medical waste that is difficult to recycle, called Safe Capture in the Operating Room, as well as the implementation of SMS reuse in new products developed through upcycling, such as ecobags for make available to patients at the University Hospital of Londrina- HU. With the estimated generation of 140.89 grams per surgery or 18 SMS blankets of different sizes, the possibility of planning a storage infrastructure for this material for use in socio-environmental projects was envisaged through the development of products based on upcycling with focus on the circular economy, in this case reported and already implemented, the creative sewing workshop in partnership with the State Penitentiary of Londrina-PEL 02 where 3000 ecobags are made per month to store the belongings of patients, which caused a reduction of a portion of waste that would go to the infectious waste collector and, at the same time, replaced the use of plastic bags with ecobags, reducing costs. Currently, the possibility of using SMS has been expanded to other application niches such as interior design and the pet market, in partnership with the Veterinary Hospital of the State University of Londrina, which will revert part of the income from sales of pet products so that the Muda Project have a self-management for the purchase of new equipment and trimmings for the manufacture of products.
The Evolving Landscape of the ESG Literature Post-COVID-19
Authors: Jang Ga-Young , Kang Hyoung-Goo
Published: November 2023

This study begins with the following two questions: Has the COVID-19 pandemic altered the ESG literature landscape? If so, how has it changed? To answer these questions, we review ESG literature before and after the onset of the COVID-19 pandemic. Eventually, we aim to answer the following specific questions: (i) Which topics within the ESG domain gained the most popularity before and after the pandemic? (ii) What conclusions have been drawn from the existing literature? and (iii) Which areas of ESG research remain unexplored or require further investigation? We find that the literature on ESG has seen major changes after the onset of the pandemic, such as (i) heightened awareness of the importance of ESG measures among practitioners and academicians with a focus on specific facets of ESG; (ii) a growing focus on the social and governance aspects of ESG; (iii) a greater emphasis on the role of ESG considerations in sustainable recovery; (iv) the need for a consistent and standardized method of evaluating and reporting ESG matters; and (v) an escalating call for government interventions and regulatory support. Finally, we conclude this review by identifying potential avenues for future research.
Target Date Fund Flows Amidst the COVID-19 Pandemic
Authors: Oh Ji Yeol Jimmy
Published: November 2023

The popularity of target date funds (TDFs) has recently increased among defined contribution pension plans. Despite their growing importance, how TDF flows and flow-performance relationships have changed in response to the COVID-19 pandemic is yet to be examined, particularly during the March 2020 market turmoil, when bond funds witnessed unprecedented outflows. We find that short-horizon TDFs experienced sizable outflows of over $13.5 billion between February and April 2020, whereas mid- and long-horizon TDFs received inflows over the same period. Given that short-horizon TDFs hold a much larger fraction of their portfolios on fixed-income securities, the outflows from these TDFs, whose fund-of-funds investment structure has been identified as a source of intra-family liquidity provision in previous studies, may have compromised the effectiveness of this liquidity provision mechanism during the COVID-19 market crash. We find that in the aftermath of the pandemic, the flow–performance relationship of short-horizon TDFs becomes markedly more concave, which hints at investors’ greater awareness of the downside risks associated with large outflows following their experience during the COVID-19 turmoil.
Interior Design Adaptation of Supermarket during Covid-19 Pandemic to Reduce Crowd Level
Authors: Boelhasrin Afina Fakhrini , Wibisono Andriyanto
Published: November 2023

Covid-19 pandemic that occurred in 2019 spread to the world, including Indonesia as a country. Pembatasan Sosial Berskala Besar (PSBB) as one of the efforts to overcome the problem by Indonesian government forced all public facilities to limit activities inside. However, supermarket is one of the public facilities that must remain open to fulfill basic needs of the community, which increases supermarket crowding level and potential to become a place for virus transmission. The purpose of this research is to analyze design adaptation of supermarket to respond Covid-19 Pandemic with crowing indicator as the main consideration. The research method used at the data collection stage was online questionnaire to specify the research area, the result of data collection then being analyzed with descriptive qualitative method to produce design adaptation recommendation alongside supporting theories. The research is conducted in basic needs display area that has higher risk of virus transmission. The research resulting design adaptation recommendation which are application of middle aisle layout, re-layout of display area, and circulation patterns adaptation.
“Honestunes”: A Virtual Collaboration Music Video in the Time of Pandemic
Authors: Sahertian Grace Carolline
Published: November 2023

The arts and entertainment industry is one of the industries that have been heavily impacted by the Covid-19 pandemic. At the beginning of the pandemic, many musicians lost their stages and musical works that could not be promoted optimally, especially with the implementation of social distancing protocols and large-scale social restrictions. In this "new normal" era, musician Grace Sahertian invites her listeners to participate in making the music video for "Honestunes." The main videos, video footage, and videos posted by netizens will be packaged with a touch of illustrations and attractive graphics using motion graphics techniques, giving the impression of being fun, playful, and lighthearted. It is hoped that this virtual collaboration can be an alternative to video work for music promotion in the midst of a pandemic. Additionally, this video clip can also be used as a reference for musicians and the public to adapt to the digital world.
Adaptasi Visual Motif Gambar Fauna pada Produk Scarf Hijab Modis Brand Alzena Kids Moslem
Authors: Suliastuti Iftika , Destiarmand Achmad Haldani
Published: November 2023

Motif fauna memiliki makna nilai sosial dan budaya sebagai simbolisme di dalam penerapannya pada artefak budaya. Motif hias fauna yang diterapkan pada scarf dan hijab modis memiliki batasan religius yakni motif gambar fauna sangat dilarang dan juga dianggap sebagai bentuk menyekutukan Allah SWT dalam agama Islam.  Salah satu motif fauna sebagai objek penelitian ini yaitu bentuk makhluk bernyawa hasil imajinasi. Topik yang diangkat dalam penelitian ini adalah analisis desain motif gambar fauna dengan pendekatan strategi adaptasi visual dengan kajian unsur estetika pada motif fauna hijab modis cetak pada brand Alzena Kids Moslem. Motif fauna yang menjadi identitas dari keseluruhan dalam penerapan fashion muslim yaitu gambar Unicorn. Unicorn atau disebut Qilin dalam sejarah Cina diadaptasi bentuk kuda yang berciri khas memiliki tanduk Penelitian ini diharapkan dapat mengetahui alasan brand yang mengaplikasikan penggambaran makhluk bernyawa pada adaptasi visual motif gambar fauna pada produk scarf hijab modis cetak. Metodologi penelitian ini menggunakan metode penelitian kualitatif deskriptif dengan pendekatan adaptasi visual. Penelitian ini menguraikan kajian unsur estetik pada teori strategi adaptasi visual sebagai parameter analisis objek penelitian. Analisis objek digunakan dalam pengumpulan produk hijab motif gambar fauna yang didapatkan dari observasi Brand yang mengikuti acara pameran Indonesia Hijab Festival 2022. Penelitian ini dilakukan untuk mengetahui pemetaan desain serta bentuk strategi adaptasi produk hijab modis cetak dengan motif gambar fauna dari brand Alzena Kids Moslem visual motif gambar fauna pada produk scarf hijab modis
Estetika Iklan Shopee 12.12 Birthday Sale Versi Blackpink
Authors: Aisyah Chairini , Handriyotopo Handriyotopo
Published: November 2023

Shopee adalah salah satu panggung perdagangan elektronik yang paling terkenal di Indonesia, terutama bagi anak muda saat ini. Shopee memajukan tahap penawaran melalui media promosi yang ditayangkan di saluran TV. Salah satu iklan Shopee yang menggunakan duta merek (brand ambassador) adalah simbol Pop Korea, Blackpink. Penggunaan duta merek dalam setiap promosi yang dilakukan oleh Shopee dapat mengasosiasikan humas kepada pembeli pada kesempatan tertentu. Studi teks dengan penggambaran yang jelas menjadi titik fokus dari pendekatan eksplorasi subjektif dengan menggunakan pendekatan Gaya Media Terapan dengan memusatkan perhatian pada bagian media yang menyusun promosi. Penelitian ini akan berkonsentrasi pada pembagian Estetika Media Terapan yaitu cahaya dan warna, ruang dua dimensi dan tiga dimensi, waktu dan gerakan, serta suara. Penelitian ini bertujuan untuk mengkaji estetika dari sebuah program iklan komersial, khususnya Shopee 12.12 Birthday Sale versi Blackpink, yang merayakan ulang tahun penjualan pada hari ke-12 di bulan ke-12 setiap tahunnya. Hasil dari tinjauan ini adalah dengan mengungkap nilai gaya dari iklan komersial Shopee 12.12 Birthday Sale versi Blackpink dan memberikan data kepada masyarakat umum tentang kehadiran promosi tersebut.
Eksplorasi Limbah Kulit Kopi Ekselsa sebagai Pewarna Alam Tekstil pada Serat Rami
Authors: Rahmawati Evi Febri , Titisari Bintan
Published: November 2023

Kopi ekselsa (Coffea liberica var. dewevrei) secara taksonomi diklasifikasikan ke dalam kategori yang sama dengan kopi Liberika dan spesies Liberoid lainnya. Produksi kopi ekselsa pada industri pengolahan kopi di daerah Ngrayudan, Jogorogo, Kabupaten Ngawi, Jawa Timur memproduksi dua ton kopi ekselsa sebagai produk unggulan, dengan limbah kulit kopi sebesar 40% dalam satu tahun. Limbah kulit kopi tersebut saat ini hanya dimanfaatkan sebagai pakan ternak dan jika tidak dimanfaatkan dengan baik dapat berpotensi mencemari lingkungan sekitar. Maka dari itu, penelitian ini bertujuan untuk mengeksplorasi potensi limbah kulit kopi ekselsa untuk dijadikan pewarna alam untuk tekstil sebagai alternatif solusi pemanfaatan limbah kulit kopi yang mempunyai nilai guna. Eksplorasi pewarna alam diaplikasikan pada tekstil yang berasal dari serat alam yaitu serat rami (Boehmeria nivea) karena serat rami memiliki daya serap yang tinggi. Selain itu, serat rami memiliki sifat yang menyerupai serat kapas, sehingga serat rami dapat dijadikan alternatif pengganti kain kapas di masa depan. Metode penelitian yang digunakan adalah metode kualitatif, yaitu studi literatur, observasi dan wawancara pada pengolahan kopi di Kabupaten Ngawi, serta eksplorasi limbah kulit kopi sebagai pewarna alam pada tekstil. Eksplorasi dilakukan dengan mengekstraksi pewarna alam dari limbah kulit kopi ekselsa dan melakukan eksperimen dengan empat jenis mordan dan empat metode mordanting pada serat rami. Jenis mordan yang digunakan yaitu tawas, cuka, kapur tohor dan tunjung, serta metode mordanting yang digunakan adalah metode pra-mordanting, simultan mordanting, post-mordanting dan pre-post-mordanting. Dari hasil eksplorasi, dapat disimpukan bahwa limbah kulit kopi ekselsa dapat menghasilkan variasi warna dengan nuansa coklat, krem dan abu-abu dengan mordant yang berbeda pada serat rami. Selain memberikan variasi warna, penggunaan mordant juga dapat meningkatkan tingkat ketahanan warna pada tekstil.