bluuebunny/crossref_metadata_2025 huggingface dataset:
Polyacrylamide Isoelectric Focusing Electrophoresis for Differentiating Kentucky 31 Tall Fescue by Esterase Enzyme
Authors: Wu Yujia , Berríos-Ortiz Laura , Allen Ernest , Erickson Todd , Stewart Elizabeth
Published: January 2023

Polyacrylamide isoelectric focusing electrophoresis (PA-IEF) provides alternative or supplementary testing for identifying the Kentucky 31 variety of tall fescue. Over a two-year period, field grow-out tests and a novel use of PA-IEF gel electrophoresis procedures were compared for
276 tall fescue samples. The PA-IEF gel test clearly identified a unique 4-band pattern in the Kentucky 31 variety, which was not detected in 21 other commercial varieties of tall fescue. This unique 4-band pattern can be used to differentiate between Kentucky 31 and other tall fescue varieties.
Finally, the method provided results over a much shorter time frame than field grow-out tests.
Synthesis of an integral signal for solving the problem of morphological analysis of electrocardiograms
Authors: Filatova Anna Yevhenivna , Povoroznyuk Anatoliy Ivanovych , Nosachenko Bohdan Petrovych , Fahs Mohamad
Published: January 2023

This work is devoted to solving the scientific and practical problem of morphological analysis of electrocardiograms based onan integral biomedical signal with locally concentrated features. In modern conditions of introduction of telemedicine in the health care system of Ukrainethe creation of cardiological decision support systems basedon automatic morphological analysis of electrocardiogramis of particular importance.The authors proposed a method for synthesizing an integral electrocardiogram in the frontal plane from all limb leads, taking into account the lead angle in the hexaxial reference system and the position of the heart’s electrical axis, since integral electrocardiological signals allow to obtain more accurate results compared to conventional electrocardiogram, because they take into account the individual characteristics of patients, a wide variety of electrocardiogramwaveforms and complexes, which is associated not only with the presence of pathological processes in the myocardium, but also with the position of the electrical axis of the heart, in particular, the electrocardiogramwill not register a low-amplitude P wave in the II department in the case of a horizontal electrical axis, but it will be clearly visible on the integral signal.To implement the method proposed in the article, a program was written in the MATLAB language, , the high speed of computation and good optimization of which allow to obtain results much faster and more accurate than using traditional approaches, and using the MATLAB Runtime library, which does not require licensing and is distributed free of charge, it was possible to provide more economical development, as well as to implement interaction with popular operating systems, which makes it more accessibleand versatile.Verification of the results was carried out using a database of electrocardiograms, which were recorded using a transtelephone digital 12-channel electrocardiological complex “Telecard”, which is part of the medical diagnostic complex “TREDEX”. The paper shows that the proposed method for the synthesis of an integral signal with locally concentrated features will improve the quality of morphological analysis of electrocardiograms in cardiological decision support systems.
Values Education through the Exemplary of Sultan Syarif Kasim II for Students in Riau
Authors: Pernantah Piki Setri , Ahmal Ahmal
Published: January 2023

Education of values through the example of a figure who is also a national hero from Riau is still lacking. It is necessary to have values education based on historical figures so that students cannot forget their heroes and imitate Sultan Syarif Kasim II’s struggles. This research was conducted using a qualitative method with a descriptive-analytical approach. The values reconstructed from the results of field research and literature studies are then integrated into the historical student learning at the University of Riau so that it is internalized into students who will later become self-character based on the fighting spirit of the heroes of Riau. Pendidikan nilai melalui keteladanan sosok yang juga merupakan pahlawan nasional asal Riau masih sangat kurang. Perlu adanya pendidikan nilai berbasis tokoh sejarah agar mahasiswa tidak melupakan pahlawannya sehingga mampu meneladani perjuangan yang telah dilakukan Sultan Syarif Kasim II. Penelitian ini dilakukan dengan menggunakan metode kualitatif dengan pendekatan deskriptif-analitis. Nilai-nilai yang telah direkonstruksi dari hasil penelitian lapangan dan studi literatur tersebut kemudian diintegrasikan ke dalam perkuliahan sejarah lokal mahasiswa sejarah Universitas Riau. Sehingga terinternalisasi ke dalam diri mahasiswa yang nantinya menjadi karakter diri yang dilandasi semangat perjuangan para pahlawan Riau. Cite this article: Pernantah, P.S., Ahmal. (2022). Values Education through the Exemplary of Sultan Syarif Kasim II for Students in Riau. Paramita: Historical Studies Journal, 32(2), 276-285. http://dx.doi.org/10.15294/paramita.v32i2.27632
Validity and Effectiveness of the Historical Electronics Module for Senior High School
Authors: Najuah Najuah , Sidiq Ricu , Azhari Ichwan , Lukitoyo Pristi Suhendro
Published: January 2023

This study examines the content validity and presentation of historical electronics modules (HEM) based on higher-order thinking skills developed with the ADDIE model for class XII high school students in Indonesia. In addition, the assessment of the effectiveness of the module on improving critical and analytical thinking skills through a competency test. The research method used is a mixed-method with research and development and experimental designs, starting from the development of the electronic history module and starting from Analysis, Design, Development, Implementation, and Evaluation. The results showed that the validity of the content and presentation from the experts and the users, in this case, students were very valid, so HEM was very suitable. The effectiveness test results showed increased students’ ability to think critically and analytically as an indicator of higher-order thinking. The electronic developed with a higher-order thinking approach can improve students’ ability to think critically and analytically in learning history independently. Penelitian ini mengkaji validitas isi dan penyajian modul elektronika sejarah (HEM) berbasis kemampuan berpikir tingkat tinggi yang dikembangkan dengan model ADDIE untuk siswa kelas XII SMA di Indonesia. Selain itu, penilaian keefektifan modul terhadap peningkatan kemampuan berpikir kritis dan analitis melalui uji kompetensi. Metode penelitian yang digunakan adalah metode campuran dengan desain penelitian dan pengembangan dan eksperimen, dimulai dari pengembangan modul sejarah elektronika) mulai dari Analisis, Perancangan, Pengembangan, Implementasi, dan Evaluasi. Hasil penelitian menunjukkan bahwa validitas isi dan penyajian dari ahli dan pengguna dalam hal ini siswa sangat valid, sehingga HEM sangat sesuai. Hasil uji efektivitas menunjukkan peningkatan kemampuan berpikir kritis dan analitis siswa sebagai indikator berpikir tingkat tinggi. Elektronik yang dikembangkan dengan pendekatan berpikir tingkat tinggi dapat meningkatkan kemampuan siswa untuk berpikir kritis dan analitis dalam pembelajaran sejarah secara mandiri. Cite this article: Najuah, Sidiq, R., Azhari, I., Lukitoyo, P.S. (2022). Validity and Effectiveness of the Historical Electronics Module for Senior High School. Paramita: Historical Studies Journal, 32(2), 286-294. http://dx.doi.org/10.15294/paramita.v32i2.30576
The Use of Economic Geography Theory in the Study of City History, a Methodological Thinking
Authors: Hartatik Endah Sri
Published: January 2023

The study of city history requires auxiliary science to explain socio-economic phenomena. One of the essential auxiliary sciences is Geography. This article aims to describe a theoretical analysis of economic geography concepts and theories that can be used to analyze historical phenomena that discuss space as a factor in social phenomena. The research method used is a literature study based on relevant scientific books and journals. The results show that the theory and concept of geography can clarify historical researchers in discussing urban spatial phenomena related to various aspects of social phenomena, primarily the phenomenon of economic development. The images of the geographic theory that can be used are the theory of transportation networks, linkage theory, network theory or “networks,” and agglomeration theory. Through theoretical clarity, one can understand social phenomena in historical situations at a certain period more clearly than narrative studies based solely on historical sources. Kajian sejarah kota  memerlukan ilmu bantu untuk menjelaskan fenomena fenomena sosial-ekonomi. Salah satu ilmu bantu penting adalah Geografi. Artikel ini bertujuan untuk memaparkan kajian teoretik konsep dan teori Geografi ekonomi yang dapat digunakan untuk menganalisis fenomena sejarah yang membahas keruangan sebagai faktor fenomena sosial. Metode penelitian yang digunakan adalah studi pustaka dengan mendasarkan pada buku dan jurnal ilmiah yang relevan. Hasil penelitian menunjukkkan bahwa teori dan konsep Geografi dapat memperjelas peneliti sejarah dalam membahas fenomena keruangan kota  yang terkait dengan berbagai aspek fenomena sosial, terutama fenomena perkembangan ekonomi. Konsep dari teori geografi yang dapat digunakan adalah teori  tentang jaringan transportasi, teore linkage, teori jaringan atau “networks’, dan teori aglomerasi. Melalu kejelasan teoretik maka fenomena sosial dalam situasi sejarah pada periode tertentu dapat dipahami lebih jelas dibandingkan dengan kajian naratif semata yang mendasarkan pada sumber-sumber sejarah. Cite this article: Hartatik, E.S. (2022). The Use of Economic Geography Theory in the Study of City History, a Methodological Thinking. Paramita: Historical Studies Journal, 32(2), 191-201. http://dx.doi.org/10.15294/paramita.v32i2.35611
Implementing Natural Language Inference for comparatives
Authors: Haruta Izumi , Mineshima Koji , Bekki Daisuke
Published: January 2023

This paper presents a computational framework for Natural Language Inference (NLI) using logic-based semantic representations and theorem-proving. We focus on logical inferences with comparatives and other related constructions in English, which are known for their structural complexity and difficulty in performing efficient reasoning. Using the so-called A-not-A analysis of comparatives, we implement a fully automated system to map various comparative constructions to semantic representations in typed first-order logic via Combinatory Categorial Grammar parsers and to prove entailment relations via a theorem prover. We evaluate the system on a variety of NLI benchmarks that contain challenging inferences, in comparison with other recent logic-based systems and neural NLI models.
MODIFICATION OF MONTMORILLONITE FOR OBTAINING NANOCOMPOSITES BASED ON POLAR POLYMERS
Authors:   Institute of macromolecular Chemistry NAS of Ukraine, 48, Kharkivske shose, Kyiv, 02155, Ukraine, GONCHAR А.N. , SAVELYEV YU.V. ,   Institute of macromolecular Chemistry NAS of Ukraine, 48, Kharkivske shose, Kyiv, 02155, Ukraine
Published: January 2023

This review covers almost all known categories of compounds used to modify montmorillonite to obtain nanocomposites based on polar polymers. Organic modifiers such as quaternary ammonium ions, quaternary phosphonium ions, amino acids and other organic compounds are commonly used to modify montmorillonite (MMT). The main directions of scientific research in this field are considered, namely the modification of MMT with ammonium surfactants, phosphonium surfactants, amino acids and nonionic surfactants. The review used 67 sources related to peer-reviewed publications, mostly from the last 10-15 years. The largest number of publications devoted to the modification of MMT was published in the period from 2004 to 2016. Nanocomposites based on epoxy resins are especially widely presented in the literature. Epoxy-based materials have been used for many years as convenient matrices for dispersing MMT due to the advantages of properties of the obtained polymer nanocomposites, such as mechanical strength, non-flammability and thermal stability. The methods of surface modification of MMT with organic modifiers considered in the article are a powerful tool for the production of polymer nanocomposite materials based on polar polymers. Amine modification of MMT allowed the formation of highly effective materials, in particular epoxy/MMT materials. These nanocomposites have demonstrated extraordinary material properties compared to virgin polymers and can therefore be used as an alternative to conventional materials such as steel and wood, reducing the cost and weight of products. Nanocomposites based on polar polymers occupy an important place among all polymer nanocomposites as modern materials used in the aerospace, automotive and electrical industries.
Okannia and akannia in Ukrainian-Russian mixed speech (“surzhyk”) Ukrainian language policy in the 1920s and after 1991: Development stages and present trends
Authors:   University of Greifswald,Germany, Zeller Jan Patrick
Published: January 2023

The Ukrainian-Russian mixed speech (URMS), also known as “surzhyk”, is a widespread phenomenon in central areas of Ukraine. Linguistic studies still lack empirical research on the variation of phonic characteristics of URMS and on its connection with the social characteristics of its speakers. Based on a corpus of spoken speech of this non-standard variety with around 340,000-word tokens taken from informal family conversations and open interviews, this article examines the variation in Ukrainian-Russian mixed speech between two prominent phonic features of Ukrainian and Russian — the variation of unstressed /ɔ/ between Ukrainian okannia and Russian akannia. The results confirm that okannia strongly dominates in unstressed vocalism of URMS thus largely corresponding to the standard Ukrainian pattern and differen tiating it from Russian. A Generalized Linear Mixed Model shows that the variation between okannia and akannia is influenced by complex dialectal and sociolinguistic differences in the Ukrainian language landscape, sociodemographic characteristics of the speakers, e.g., age and gender, and the speech situation. There are evident correlations between the phonic variation and the lexicalmorpho lo gical affinity of the word form, i.e., whether the word form on the lexical-morpho logical level coin cides with either standard Ukrainian or Russian. The findings make it clear that one-dimensional attempts to clarify language variation in Ukraine are bound to fail. Keywords: Ukrainian-Russian language contact, dialect contact, language variation, îkannia, akannia
Видатний український математик, просвітитель, педагог і організатор науки
Authors: Кушнір Роман Михайлович , Петрук Олег Леонідович , Притула Ярослав Григорович
Published: January 2023

Статтю присвячено пам’яті українського математика, відомого своїми працями з теорії аналітичних функцій, історії математики, астрономії та фізики, громадського діяча, фундатора української фізико-математичної термінології, дійсного члена Наукового товариства імені Шевченка, доктора філософії, професора Львівського університету Володимира Йосифовича Левицького. У 1893 р. він опублікував працю з вищої математики, вперше в історії написану українською мовою. «Основоположник математичної культури нашого народу» — так сказав про Володимира Левицького математик світової слави академік Михайло Кравчук.
Fever, Rash, and Cough in a 7-Year-Old Boy
Authors: Luu Lydia A. , Makin Thomas A. , Borish Larry , Snavely Emily A. , Meyer Jessica S. , Zlotoff Barrett J. , Zeichner Steven L.
Published: January 2023

A 7-year-old boy presented to the emergency department with fever, cough, congestion, abdominal pain, myalgias, and morbilliform rash. Several aspects of the patient’s history, including recent travel, living on a farm, exposure to sick contacts, and new medications, resulted in a wide differential diagnosis. Initial laboratory testing revealed leukocytosis with neutrophilia and elevated atypical lymphocytes, but did not reveal any infectious causes of illness. He was discharged from the hospital, but then represented to the emergency department a day later with worsening rash, continued fever, abdominal pain, and poor intake. He was then admitted. A more comprehensive laboratory evaluation was initiated. During this hospital course, the patient’s physical examination changed when he developed head and neck edema, and certain laboratory trends became clearer. With the assistance of several specialists, the team was able to reach a more definitive diagnosis and initiate treatment to appropriately manage his condition.
Índice de avisos de empleo para Costa Rica 2010 – 2021
Authors: Sánchez Gómez Manuel Esteban
Published: January 2023

Este artículo presenta el primer índice de demanda de trabajo para Costa Rica, denominado “Índice de Avisos de Empleo” (IAE). Se calcula para el periodo 2010-2021 con información obtenida del sitio web de la Agencia Nacional de Empleo (ANE). El IAE muestra un comportamiento procíclico. Su estimación por actividad económica, provincia y grupos ocupacionales es coherente con la dinámica de la economía en el periodo de estudio. En particular, en el contexto de la pandemia del COVID-19, se observa una contracción mayor en las actividades más afectadas por las medidas de restricción a la movilidad durante el primer semestre de 2020, mientras que en el periodo de recuperación (segundo semestre de 2020 y el año 2021) destaca su incremento en manufactura, servicios de apoyo a empresas e información y comunicaciones, así como de las empresas ubicadas en Heredia, Cartago y Guanacaste, y de las ocupaciones de operarios y ensambladores de manufactura, profesionales y científicas y personal de apoyo y administrativo.
Childhood use of coin pusher and crane grab machines, and adult gambling: A conceptual replication of Newall et al. (2021)
Authors: Parrado-González Alberto , Newall Philip W.S.
Published: January 2023

Background and aims

Youth gambling research mainly focuses on the illegal use of age-restricted machines, but coin pusher and crane grab machines are gambling machines that can be used by people of any age in the UK, and are also in use internationally. Previous cross-sectional evidence has associated recollected childhood usage of these machines with adult gambling participation and levels of problem gambling amongst adult gamblers. We attempted to conceptually replicate the findings of one of these studies (Newall et al., 2021), while addressing some limitations of that study.

Methods

A cross-sectional survey of 2,000 UK-based and -born participants aged 19–24 years. The measures were participants' recollected usage of coin pusher and crane grab machines as a child, whether they had gambled in the past 12-months or not, and the PGSI for past 12-month gamblers.

Results

Overall, 5 of 7 tested associations were significant and in the hypothesized direction. Logistic regression models showed that adult gamblers were more likely to recollect using, and used at higher levels of frequency, coin pusher and crane grab machines, than non-gamblers. Then, negative binomial regression analysis showed that adults who recollected using crane grab machines at higher levels of frequency showed more gambling-related problems.

Discussion and Conclusions

These results suggest that childhood usage of coin pusher and crane grab machines may act as an underappreciated risk factor for the development of gambling-related harm across the lifespan. This information may be considered for further youth gambling research and policy.
Efficient degradation of 4-nitrophenol using VO(TPP) impregnated TiO2 photocatalyst: Insight into kinetics and mechanism
Authors: Yadav Vandana , Verma Priyanka , Negi Himani , Singh Raj Kumar , Saini Vipin Kumar
Published: January 2023

Heterogeneous composites of metalloporphyrins with TiO2 possess exceptional photosensitizing properties, which works efficiently in degradation of organic pollutants. Herein, vanadium porphyrin complex {VO(TPP)} was loaded on TiO2 photocatalyst {VO(TPP)–TiO2} by the wet impregnation method. The as-prepared catalysts were characterized to analyze physicochemical properties and the photocatalytic degradation of 4-nitrophenol (4-NP) was investigated to assess their catalytic efficiency. XRD results revealed that VO(TPP)–TiO2 is dual-phase anatase/rutile with high crystallinity. The UV-DRS study showed that the loading of {VO(TPP)} on TiO2 caused a red-shift in the absorption spectrum and decreased the band-gap as well. The surface area has increased significantly after impregnation as confirmed by BET isotherm. The degradation of 4-NP follows pseudo-first-order kinetics, and the VO(TPP)–TiO2 showed higher degradation (99%) of 4-NP as compared to pure TiO2 (87%). The degradation mechanism of 4-NP and its pathway was also discussed using UV–Vis spectroscopy and electrospray mass spectrometry analysis.

Graphical abstract
Powder metallurgical processing of Al matrix composite reinforced with AlSiCrMnFeNiCu high-entropy alloys: Microstructure, thermal stability, and microhardness
Authors: Shadangi Yagnesh , Chattopadhyay Kausik , Mukhopadhyay Nilay Krishna
Published: January 2023

The present work deals with powder metallurgical processing of AA 6082 Al matrix composite reinforced with non-equiatomic AlSiCrMnFeNiCu high-entropy alloy (HEA). The structure, microstructure, morphology, and phase composition of these Al-HEA nanocomposite powders were discerned through XRD and TEM, SEM–EDS, respectively. The AlSiCrMnFeNiCu HEA used as reinforcement was found to have a two-phase microstructure with a major and minor fraction corresponding to the B2-type (a = 0.29 nm; cP2) and Cr5Si3-type (a = b = 0.9165 nm, c = 0.4638 nm; tI32) phases, respectively. Mechanical milling (MM) imparts significant refinement, and nanostructuring of grains (~ 10–12 nm) for Al-HEA for nanocomposite powder was observed. These powders of Al-HEA was found to be thermally stable up to 650 ℃. Further, these Al-HEA nanocomposite powders were consolidated through pressure-less sintering at 560 ℃, which led to the formation of a thin ~ 400–500 nm transitional layer at the interface. The microhardness of these Al-HEA composites were tuned in the range of ~ 0.90 to 1.81 GPa.

Graphical abstract
Communication Strategy on Agricultural Insurance in South Kalimantan
Authors: Alif Muhammad , . Sumardjo , Sarwoprasodjo Sarwititi , Fatchiya Anna
Published: January 2023

This study aims to analyze the communication strategy of the agricultural insurance program in the South Kalimantan region to create superior and independent farmers. This communication strategy can contribute to the existing development program in South Kalimantan. Qualitative methods with SWOT and TOWS analysis techniques were employed in this study. Data collection techniques included open interviews, focus group discussions (FGD), and field observations (research location and district level). The results show that agricultural insurance in South Kalimantan still has obstacles that occur in the field. Many farmers do not understand and are interested in participating in this rice farming insurance. The communication strategy can include increasing the capacity and quality of government human resources in the field by providing technical socialization training; involving community leaders,  farmer groups, and village government in disseminating information; optimizing social capital in the community; establishing an information center at the village level; increase the variety and diversity of information delivery methods carried out by extension agents and Jasindo officers; as well as providing various media for various sources of information, especially social media and the internet
Siłaczko, wróć!
Authors: Kłakówna Zofia Agnieszka
Published: January 2023

The paper deals with several important issues concerning programs and functions of the traditional school and the way they clash with the problems of our contemporary civilizational stage and cultural context. The study exposes the fact that in today’s globalised world, technological revolution is changing the way people communicate with one another, making it universally possible to communicate by means of the written word. However, this poses a problem for the contemporary school. The paper presents some definite actions and offers specific solutions to the problem. The title of the paper, which refers to Stefan Zeromski’s well-known short story, is meant to draw the reader’s attention to the complexity of the issues discussed and emphasise the special importance of the teaching profession.
Wykorzystanie wiedzy o cechach indywidualnych uczniów w pracy nad „Weselem” Stanisława Wyspiańskiego. Propozycja metodyczna
Authors:   Katolicki Uniwersytet Lubelski Jana Pawła II, Lublin, Polska, Marzec-Jóźwicka Magdalena
Published: January 2023

The author of thepaper argues that the knowledge of students’ individual characteristics, which include, among others, different types of intelligence, learning styles, roles assumedduring the lesson and interests, help the teacher organize the learning process. Possessing such knowledge, teachers of Polish have the opportunity to recognize the strengths and weaknesses of their students, and then adapt the methods, techniques and forms of work organization during the lessons, as well as extracurricular activities to their needs and possibilities. The paper includes several dozen examples of instructions for students, taking into account the differences between them, based on one of the main school readings at secondary school, i.e. “The Wedding” by Stanislaw Wyspianski.
Poetyckie iluminacje Jana Tulika
Authors: Belcik Jan
Published: January 2023

The paper written by a poet and a critic, presents the work of Jan Tulik. He is one of the most outstanding contemporary writers of Podkarpacie, but also a leader of literary and cultural life, both locally and nationally. The paper contains comments on various poems, on volumes of poetry, as well as on prose works.
Poszukiwanie własnej tożsamości – wyzwanie i zadanie. „Fuga” Wita Szostaka
Authors:   Uniwersytet Rzeszowski, Polska, Matwiejczuk Agnieszka
Published: January 2023

Wit Szostak’s fugue is built of eight stories about the fate of Bartłomiej Chochoł. Each of the scenes of the characters’ fate is presented in a separate chapter or two. The chapters are numbered with Roman numerals, sometimes also with letters (a, b). This work deals with the issue of identity and we get to know different faces of Bartłomiej Chochoł: the last king of Poland (“Fugue I”), a companion (“Fuga II”), an observer and chronicler (“Fuga IIIa” and “Fuga IIIb”), a melancholic (“Fuga IV”), a pensioner (“Fuga Va” and “Fuga Vb”), a successful man (“Fuga VI”), a loner and an old man (“Fugue VII” and “Fuga VIII-unfinished”). Based on the types of identity specified by Katarzyna Waszyńska (individual, national, social, group and cultural identities), the character of the protagonist-narrator is discussed.
Edytorska lektura komiksu na przykładzie zeszytow „Tytus, Romek i A’Tomek”
Authors:   Uniwersytet Pedagogiczny im. KEN w Krakowie, Polska, Pustuła Marta
Published: January 2023

A comic book consists of a number of narrative and editorial elements characteristic of this genre, which create a unique structure . Text and image form an inseparable whole here. The drawings themselves could not exist without the text, and vice versa. Yet the conventionalised form of the comic book significantly distinguishes it from a picture book. This is obviously noticed by researchers, even though they use the term iconotext for both genres. This conventionalised text-visual form, which the comic book is, is sometimes classified as easy to read (due to the small amount of text) and automatically inserted between children’s books. Meanwhile, it gives contemporary readers space for engaging reading. In order to read all the meanings enchanted in the comic, the reader decodes a series of text, illustrations and editorial characters. This paper provides a list of editorial distinctions characteristic of a comic and an editorial analysis that decodes the meanings of these distinctions in the content of the analysed work.
National Hospital Ambulatory Medical Care Survey: 2019 National Summary Tables
Authors: L Santo , K Kang
Published: January 2023

The Ambulatory and Hospital Care Statistics Branch of the National Center for Health Statistics (NCHS) is pleased to release the most current nationally representative data on ambulatory care visits to physician offices in the United States. Statistics are presented on physician practices as well as patient and visit characteristics using data collected in the 2019 National Ambulatory Medical Care Survey (NAMCS). NAMCS is an annual nationally representative sample survey of visits to nonfederal office-based patient care physicians, excluding anesthesiologists, radiologists, and pathologists.
A Retrospective Analysis of Bone Marrow Examination Results from a Single Center Institution: In What Situations Is Bone Marrow Examination Helpful?
Authors: Lee Young-kyu , Kim Min Jung , Lee Min-Young , Kim Kyoung Ha , Lee Namsu , Won Jong-Ho , Yoon Seug Yun
Published: January 2023

Objective: Bone marrow (BM) examinations are performed to evaluate hematological abnormalities. Focusing on patients with cytopenia, we aimed to determine the circumstances under which a BM examination can assist in the diagnosis of hematologic diseases.Methods: The medical records of 738 patients who underwent BM examination from March 2011 to March 2019 at Soonchunhyang University Seoul Hospital were reviewed. In total, 234 patients underwent a BM examination to identify the cause of cytopenia. Excluded from the analysis were BM examinations performed to diagnose specific diseases and evaluate disease status.Results: Results suggesting suboptimal outcome (n=6) or BM invasion of solid tumors (n=13) were excluded. Immune thrombocytopenic purpura patients (n=52) with normal BM examination results were also excluded. One hundred sixty-three patients who underwent BM examination to determine the cause of cytopenia were included in the analysis. A comparison of non-specific results (n=56) to those pointing to an underlying hematologic disease (n=107) showed that patients with severe neutropenia or severe thrombocytopenia were more likely to be diagnosed with a hematologic disease. Specifically, as the number of severe cytopenias increased, the likelihood of a hematologic disease diagnosis was significantly augmented. Patients with end-stage renal disease, autoimmune disease, or liver cirrhosis were more likely to receive non-specific results.Conclusion: In conclusion, seeking the underlying disease or drug should be a primary target for patients with cytopenia. In cases of severe cytopenia in more than one lineage, BM examination should be strongly considered to diagnose an underlying hematologic disease.
A Case of Fluorine-18-Fluorodeoxyglucose Positron Emission Tomography/Computed Tomography Findings of Mycosis Fungoides with Large Cell Transformation Involving Cutaneous Lesions, and Metastasis to Lymph Node and Viscera
Authors: Choi Joon Ho
Published: January 2023

Large cell transformation (LCT) of mycosis fungoides (MF) is a histopathological transformation of neoplastic small lymphocytes with a clonally identical large cell phenotype, which is found in 20%–50% of cases of advanced MF. Some few cases and studies have been reported about the role of fluorine-18-fluorodeoxyglucose positron emission tomography/computed tomography (18FFDG PET/CT) in diagnosing MF-LCT. This is a case of a 55-year-old man who had a left neck mass for 4–5 months. He underwent excisional biopsies on the skin and soft tissue. The histopathologic report showed MF-LCT. The 18F-FDG PET/CT findings revealed hypermetabolic lesions in the skin, cervical lymph node, and visceral organ. We introduce a rare case of MF-LCT involving both cutaneous and extracutaneous lesions.
Appendiceal Mucocele Developed by Appendiceal Mucosal Prolapse: A Rare Case Report with Review of Literature
Authors: Kim Kyeongmin , Choi In Ho
Published: January 2023

Appendiceal mucocele formation can be induced by mechanical obstruction due to various reasons; In very rare cases, mucosal prolapse of the appendix can also cause mucocele. We first present the case of a 38-year-old woman who was diagnosed with appendiceal mucocele associated with appendiceal mucosal prolapse. The lesion was first found by colonoscopy and treated surgically. On examining the specimen, it revealed a dilated lumen containing mucinous fluid at the proximal portion, a polypoid mass at the mid portion, and a slightly dilated distal portion filled with mucoid material. But there was no histologic evidence of polyp. We report the first case of mucosal prolapse of the appendix resulting in mucocele with a review of the concepts of prolapse.
Early Postoperative Pulmonary Edema Attributable to Reverse Stress-Induced Cardiomyopathy in a Recently Infected COVID-19 Patient: A Case Report
Authors: Yoo Jae Hwa
Published: January 2023

The coronavirus disease 2019 (COVID-19) pandemic has increased the incidence of stress-induced cardiomyopathy (SICMP). A 33-year-old woman without any notable medical history underwent an emergency operation to treat a ruptured ectopic pregnancy. She entered hemorrhagic shock attributable to massive bleeding of the ruptured ectopic sac, followed by rapid transfusion and hydration, and vasopressor therapy. Her COVID-19 rapid antigen test was negative before surgery. After surgery, her vital signs were stable and she was mentally alert. However, about 1 hour later, she developed pulmonary edema, was re-intubated, and was admitted to the intensive care unit. There, echocardiography revealed reverse SICMP, and a COVID-19 polymerase chain reaction test was positive. She recovered well on conservative treatment. After 9 days, her echocardiography profile was normal and she was discharged without any cardiac symptoms or complications. Anesthesiologists should be aware that COVID-19-infected patients may develop postoperative SICMP.
Ultrasound-Guided Nerve Hydrodissection for Neuropathic-Like Pain Arising from Hemodialysis: A Case Report
Authors: Kim Mun Gyu , Jang Youn Sil , Her Keun , Lee Chang Bong
Published: January 2023

Peripheral neuropathy is very common in patients with chronic renal failure. The pain arising from hemodialysis can be caused by vascular problems (such as vascular stenosis and steal syndrome) and neuropathy. Hemodialysis patients who need to be dialyzed three times a week should not be told to endure worsening pain every time they are dialyzed. We report that the pain arising from hemodialysis in the lower arm was a concern due to the nerve entrapment in the axillary area, and it was successfully controlled with ultrasound-guided nerve hydrodissection.
North Atlantic Right Whale Consortium 2019 Annual Report Card
Authors: Pettis Heather M. , Pace, III Richard M. , Schick Robert S. , Hamilton Philip K.
Published: January 2023

The North Atlantic right whale (Eubalaena glacialis) remains one of the most endangered large whales in the world. Over the past two decades, there has been increasing interest in addressing the problems hampering the recovery of North Atlantic right whales by using innovative research techniques, new technologies, analyses of existing databases, and enhanced conservation and education strategies. This increased interest demanded better coordination and collaboration among all stakeholders to ensure that there was improved access to data, research efforts were not duplicative, and that findings were shared with all interested parties. The North Atlantic Right Whale Consortium, initially formed in 1986 by five research institutions to share data among themselves, was expanded in 1997 to address these greater needs. Currently, the Consortium membership is comprised of representatives from more than 100 entities including: research, academic, and conservation organizations; shipping and fishing industries; whale watching companies; technical experts; United States (U.S.) and Canadian Government agencies; and state authorities. North Atlantic Right Whale Consortium members agreed in 2004 that an annual “report card” on the status of right whales would be useful. This report card includes updates on the status of the cataloged population, mortalities and injury events, and a summary of management and research efforts that have occurred over the previous 12 months. The Board’s goal is to make public a summary of current research and management activities, as well as provide detailed recommendations for future activities. The Board views this report as a valuable asset in assessing the effects of research and management over time.
Quantification of the initial levels of calciprotein particles as a screening marker of mineral homeostasis in patients with cardiovascular disease and in patients with chronic kidney disease
Authors: Shishkova D. K. , Matveeva V. G. , Markova V. E. , Khryachkova O. N. , Indukaeva E. V. , Shabaev А. R. , Frolov A. V. , Kutikhin A. G.
Published: January 2023

Aim. To evaluate the initial concentration of calciprotein particles (CPPs), which are scavengers of excessive calcium and phosphate, in patients with cardiovascular disease and in patients with chronic kidney disease as compared with the healthy volunteers.

Material and methods. The study included 308 individuals as follows: 1) 88 participants of the PURE study without hemodynamically relevant carotid athero scle rosis and symptomatic coronary atherosclerosis; 2) 88 patients with cere brovascular disease (CVD) who required carotid endarterectomy; 3) 88 pa tients with coronary artery disease (CAD) who required percutaneous coronary intervention or coronary artery bypass graft surgery; 4) 63 patients with stage 5 chronic kidney disease (CKD). We measured following mineral homeostasis parameters: total and ionized calcium, phosphate, total protein, albumin, and fetuin-A. Then, we determined a baseline serum CPP concentration by flow cytometry using a fluorescent-labeled bisphosphonate OsteoSense 680EX. Results. In comparison with other patients, healthy volunteers had the highest serum CPP concentration (249 CPPs/µL), indicating the retained ability to compensate mineral homeostasis disturbances by aggregation of excessive calcium and pho sphate with acidic proteins (mineral chaperones). Reduced serum CPP concentration in patients with CVD (170 CPPs/µL), CAD (139 CPPs/µL), and stage 5 CKD (193-203 CPPs/µL) showed impaired aggregation of excessive serum calcium and phosphate, which was also reflected by an increased level of blood ionized calcium.

Conclusion. Patients with CVD, CAD, and stage 5 CKD have lower serum CPP concentration than healthy individuals. In combination with elevated ionized calcium and reduced albumin, this suggests the depletion of calcium binding buffers in the serum of patients with cardiovascular and renal diseases.
Role of glycemic control in elective percutaneous coronary interventions in patients with type 2 diabetes
Authors: Karetnikova V. N. , Kchorlampenko A. A. , Osokina A. V. , Kochergina A. M. , Polikutina O. M. , Golubovskaia D. P. , Oleinik I. R. , Barbarash O. L.
Published: January 2023

Aim. To assess the association of glycemic control (achievement of an individual target glycated hemoglobin level) with the outcomes of elective percutaneous coronary interventions in patients with type 2 diabetes (T2D).

Material and methods.This cohort observational study included 74 patients with a median age of 61 (57; 64) years. There were 49% of men with a previously established T2D, who had indications for elective primary percutaneous coronary intervention (PCI) for stable coronary artery disease. At inclusion in the study and after 1 month, the concentration of fasting blood glucose, glycated hemoglobin (HbA1c), fructosamine, and serum creatinine were determined. Plasma glucose levels were determined using the hexokinase method. HbA1clevel was determined by immunoturbidimetry on a Konelab 30i chemistry analyzer. The concentration of fructosamine was determined by the kinetic colorimetric assay on a Konelab 30i chemistry analyzer. Statistical processing was carried out using the Statistica 10.0 program from StatSoft, Inc. (USA).

Results.At the time of enrollment, 31% of participants had not achieved the target glycated hemoglobin level against the background of nonoptimal hypoglycemic therapy in most cases. A total of 18 (25%) following adverse cardiovascular events were registered within 12 months after PCI: 11 (15%) patients developed acute coronary syndrome; among them, 6 (8%) patients had stent restenosis according to coronary angiography, 4 (6%) patients — progression of atherosclerosis, which required repeated PCI with stenting of another vessel, 2 (3%) patients — cerebrovascular accident, and 3 (4%) patients were hospitalized due to de compensated heart failure. According to multivariate logistic regression, only the HbA1clevel was a predictor of adverse outcomes during the year after PCI — a 1% increase in HbA1clevel increased the risk of adverse outcomes by 1,79 times (odds ratio, 1,79, 95% confidence interval, 1,06-3,02, p=0,028). Poor glycemic control 1 month before PCI increased the risk of cardiovascular events by 4,04 times over the next year, while non-target HbA1clevel immediately before PCI increased the risk of adverse outcomes by 4,7 times, and 5 months after PCI, by 7,34 times.

Conclusion.The significance of non-target glycated hemoglobin level for adverse outcomes during the year after elective PCI against the background of T2D was established with an increase in the negative effect as long-term (after myocardial revascularization) maintenance of poor glycemic control.
TWO-LEVEL MODEL OF COMPOSITE SYNTHESIS ON A SUBSTRATE FROM A POWDER MIXTURE OF TIO2 AND AL. 1. MODEL DESCRIPTION AND SIMPLE EXAMPLES
Authors: Knyazeva Anna G. , Anisimova Mariia A.
Published: January 2023

Modern 3D-technologies are of considerable interest due to the possibility of direct creation of products from composite materials, which are formed directly by laser action. This article presents a thermo-kinetic model of laser treatment of a powder layer on a substrate, taking into account the evolution of the composition. The model variant on a macrolevel is convenient for a detailed investigation of accompanying phenomena when varying technological parameters. Two variants of composition evolution are considered. In the formal-kinetic approach, taking into account successive parallel stages, kinetic equations are described in which the reaction rate depends on the temperature according to the Arrhenius law, and on the concentrations according to the law of active masses. In the second version, the evolution of composition is described on the mesolevel basis. Thermal processes are calculated in the macro problem and diffusion-kinetic ones in mesosystems. Melting in a mixture of powders is described on the macro scale by introducing a melting temperature interval and a fraction of the liquid phase. If, in the first variant, the mathematical model remains one-dimensional. In the second variant, the model becomes two-dimensional. Examples of calculations illustrating features of different subtasks and their possibilities for TiO2-Al system are presented.
How Distributed Leadership and Teachers’ Psychological Capital Influence Turnover Intention? Understanding The Mediating Role of Trust in Principal and Work Engagement
Authors: KAVGACI Hasan , ÖZTÜRK Ayhan
Published: January 2023

This study examined the relationships among school principals' distributed leadership, teachers' psychological capital, trust in the principal, work engagement, and turnover intention. The research sample consisted of 397 primary and secondary school teachers. The study employed a cross-sectional survey design using quantitative methods. Distributed Leadership Scale, Psychological Capital Questionnaire-Short Form, Utrecht Work Engagement Scale-Ultra short version, Trust in the Principal Scale, and Teachers’ Intent to Move to Another School Scale were used to gather the data. Multiple mediator analysis in structural equation modeling (SEM) with the bootstrapping method was used to analyze the direct and indirect effects of dependent variables on teachers’ turnover intentions. 95 % confidence intervals were calculated using 2000 samples to examine the mediating effects. The results indicated that the direct effects of distributed leadership and psychological capital on teachers’ turnover intentions are insignificant. Psychological capital negatively and indirectly affects turnover intentions through work engagement while distributed leadership negatively and indirectly influences turnover intentions via work engagement and trust in principal. The study emphasized the role of job and personal resources in understanding teachers’ turnover intentions. Based on the results, principals are recommended to demonstrate distributed leadership behaviors to build trust and use intervention strategies to strengthen teachers’ psychological capacities if they want to lower teachers’ turnover intentions.
Online Learning Experiences of Graduate Students in Türkiye: Could This Be the Footsteps of a Reform?
Authors: DENİZ Ünal , YAKUT-ÖZEK Bahar
Published: January 2023

With the recent Covid-19 pandemic, the way of teaching has rapidly turned into online learning environments. This situation has brought along various difficulties in the implementation of online teaching. From this point of view, this research focuses on the experiences of graduate students in the online teaching process and the multifaceted effects of this process on them. The research is a case study examining the opinions of 16 graduate students from various state and foundation universities in Türkiye. The maximum diversity sampling method, one of the purposeful sampling methods, was taken as a criterion in the determination of the participants. The data of the study were obtained with a semi-structured interview form developed by the researchers. Thematic analysis technique was used in the analysis of the obtained data. Research results show that online education facilitates access to education, develops students’ self-discipline and awareness of taking responsibility; however, it has disadvantages in terms of social and psychological aspects. In addition, it has been concluded that online teaching is not yet ready to be considered as a stand-alone teaching delivery model, and it is more appropriate to use it as an alternative model to traditional face-to-face education. It is thought that the results obtained within the scope of the research will contribute to the improvement and development of online learning experiences of graduate students, as well as being a guide to higher education stakeholders and policymakers.