bluuebunny/crossref_metadata_2025 huggingface dataset:
Bond Characteristics and Experimental Behavior of Textured Epoxy-coated Rebars Used in Concrete Bridge Decks
Authors:   University of Illinois Urbana-Champaign, Andrawes Bassem , Perez Claros Ernesto ,   University of Illinois Urbana-Champaign, Zhang Zige ,   University of Illinois Urbana-Champaign
Published: January 2022

The deterioration of bridge decks is a problem typically associated with the corrosion of the reinforcing steel. This issue was partially controlled during the 1970s with the incorporation of the epoxy-coating protection system. However, research later demonstrated that the smooth surface resulting from the epoxy-coating application reduces most of the friction between the rebar and the surrounding concrete. Consequently, forces acting on the rib faces are reconfigured in such a way that the radial components increase, triggering the early development of cracks. To mitigate both the reduction of bonding and the formation of cracks, the Illinois Department of Transportation proposed a new type of coated bars: textured epoxy-coated (TEC) bars. Over the last few years, different projects have been executed to understand and improve the characteristics of TEC rebars. This report is a continuation of research performed at the University of Illinois Urbana-Champaign to evaluate the bond behavior of TEC bars. The experimental program starts by characterizing, qualitatively and quantitatively, the roughness of the TEC rebars. Next, their bond-slip interaction embedded in concrete is evaluated through pull-out tests. Finite element models of these tests are developed to validate the behavior observed as the textured reinforcement loses anchorage with concrete. Based on these results, the experimental program then aims to study the impact of the drying shrinkage, temperature change, and flexural demands on two large-scale bridge deck specimens reinforced, individually, with TEC and standard epoxy-coated bars. The results collected from both specimens using digital image correlation and strain gauges are compared to explore the differences exhibited by the traditional and the new type of reinforcement coatings in terms of stress distribution in bridge decks. Finally, given the specialized equipment and time-consuming procedure needed to calculate the roughness parameters of TEC bars, an empirical, weight-based approach is developed as a rapid method for assessing the rebars’ roughness on-site.
Pernikahan Usia Dini Terhadap Status Gizi Anak Balita
Authors: Dartilawati Dartilawati , Dangnga Muhammad Siri , Umar Fitriani
Published: January 2022

Jumlah pernikahan usia dini di Kabupaten Pinrang masih cukup tinggi. Ibu yang menikah di usia dini berisiko memiliki anak berstatus gizi buruk dan pendek. Penelitian ini bertujuan untuk mengetahui pengaruh pernikahan usia dini terhadap status gizi balita berdasarkan BB/U dan TB/U. Jenis penelitian yang digunakan adalah observational analitik dengan pendekatan cross sectional study. Sampel adalah sebagian balita di wilayah kerja Puskesmas Suppa Kabupaten Pinrang. Pengambilan sampel dilakukan dengan metode accidental sampling sebanyak 94 orang. Status gizi anak dikumpulkan dengan pengukuran antropometri berupa berat badan dan tinggi badan.  Analisis data menggunakan uji fisher exact. Hasil penelitian diperoleh 9,6% balita mengalami stunting, 8,5% gizi kurang dan 46,8% ibu balita menikah di usia dini. Tidak ada pengaruh pernikahan usia dini terhadap status gizi balita berdasarkan BB/U (p=0,431) dan TB/U (p=0,279). Disarankan perlunya edukasi kepada masyarakat tentang bahaya pernikahan usia dini dan perbaikan pola asuh balita.
Prediction of cavitation wear resistance of metallic materials based on the results of measuring the roughness of a worn surface
Authors:   Tsvetkov Yu. N. Gorbachenko E. O. Makarova S.O. ,Kudryavtseva E.R.
Published: January 2022

A method is proposed for predicting the relative cavitation wear resistance of metallic materials using the ratio of the durations of their incubation periods of wear, based on measuring the rate of increase in surface roughness during the incubation period. The experiments were carried out in fresh water and artificial seawater.
Keywords: cavitation wear, metal alloy, relative wear resistance, incubation period, surface roughness.
yuritsvet@mail.ru
Setting mode for precision systems of impact and laser engraving under conditions of uncertainty of characteristics
Authors:   Magomedov M.H. Gromov A.E. YMagomedov M.H. Gromov A.E. Yakovlev A.V.Akovlev A.V.
Published: January 2022

The Hertz impact interaction formula is extended to rigid bodies, the real physical characteristics of which a priori have a significant scatter and cannot be specified exactly. Fuzzy-functions are determined that characterize a micro-impact under conditions of indistinctly specified strength properties of the material of the processed halfspace and the geometry of the impact tool. It is shown that an effective solution of applied problems of precision engraving in conditions of this kind of uncertainty of parameters is the use of adaptive IT-technology based on the interactive pre-launch setting of the system.
Keywords; impact engraving technology, micro impact, fuzzy parameters, critical parameters, fuzzy surfaces, gradation scale of shades.
Change in torque transmitted by a standard magnetic coupling with the same overall dimensions, depending on the grade of permanent magnet and its dimensions
Authors:   Krasil'nikov A.Ya. Krasilnikov A.A.
Published: January 2022

The possibility of changing the torque transmitted by a cylindrical magnetic coupling, depending on the brand of a high-coercive permanent magnet — neodymium— iron—boron, samarium—cobalt is considered. Using the example of standard magnetic couplings with a diameter of 133 mm for magnets and air gaps between the half couplings for magnets of 5 and 7 mm, the change in the torque transmitted by the magnetic coupling without changing its overall dimensions is shown. Varying the torque of the magnetic coupling is possible by changing the shape, size and grade of permanent magnets while keeping the same number of magnets in each of the half-couplings of the magnetic coupling constant.
Keywords; magnetic coupling, permanent magnet, number of magnets.
Krasilnikov1951@yandex.ru
High-temperature friction units with carbon-containing materials
Authors: Roshchin M.N.
Published: January 2022

The frictional interaction of carbon-carbon composites with steel at high temperatures is considered. Antifriction properties of carbon composites are investigated at friction on a steel at speeds of 0,050,25 m/s and pressures of 0,31,0 MPa. The advantages of Hardcarb-T material in comparison with Argalon-2D material are experimentally determined.
Keywords: temperature, friction, contact pressure, composites, steel, speed, friction coefficient.
roschin50@yandex.ru
USO DO WHOQOL BREF PARA AVALIAR ATLETAS COMPETITIVOS DE NATAÇÃO
Authors: Rodrigues Larissa Siqueira , Oliveira Eduarda de Melo Rodrigues e , Farias Keila Gilene Barros Bendelaque , Abdoral Patrick Roberto Gomes , Miranda Cláudia Jeane Claudino de Pontes , França Iranete Corpes Oliveira , Silva Susanne Cristine Brito e , Rodrigues Leandro Lopes , Couto Mayra Herminia Simões Hamad Farias do
Published: January 2022

OBJETIVO: Avaliar a qualidade de vida dos atletas de natação por meio do questionário WHOQOL-BREF. METODOLOGIA: Refere-se a uma pesquisa descritiva de caráter quantitativo, procedida no mês de outubro de 2021. Foi utilizado para avaliar a qualidade de vida dos atletas o questionário WHOQOL-BREF, com 26 questionamentos, o qual analisa a qualidade de vida e divide-se em 4 domínios: físico, psicológico, relações sociais e meio ambiente. Para análise dos dados obtidos após a pesquisa, usou-se o programa de computação, por meio do processamento no sistema Microsoft Excel, Statistic Package for Social Sciences (SPSS) versão 24.0, todos em ambiente Windows 7. RESULTADO: A pesquisa foi realizada com 26 atletas de natação competitivos de um clube esportivo com idade média de 29 anos. Sendo a maioria homens (53,8%) e todos participaram de algum torneio local e/ou estadual. O escore médio que mede a satisfação dos atletas com sua saúde é 4,12; o domínio físico apresentou o maior escore médio (µ = 3,86 ± 0,31) e o domínio meio ambiente menor escore médio (µ = 3,34 ± 0,39). Dessa forma, com exceção do domínio 3 (relações sociais) todos os domínios aparecem com nível significante maior que 5% (p>0.05). Ademais, a idade também impacta significativamente (p<0.05) na qualidade de vida dos atletas. Que quanto maior a idade, menor a qualidade de vida. CONCLUSÃO: É percebido a importância de melhora nas relações pessoais, visto que seu impacto positivo gera melhora na qualidade de vida dos atletas, contribuindo de forma benéfica em seus resultados de competição.
Attitudes of Islamic education teachers in the Governorate of Dhofar in the Sultanate of Oman towards teaching Islamic Faith: Exploratory study (qualitative)
Authors: بنت ربيع اليافعية نسيمة , بن ناصر السالمي محسن
Published: January 2022

The study aimed to identify the trends of Islamic education teachers in the Dhofar Governorate of the Sultanate of Oman towards teaching the topics of the Islamic Faith. The study adopted the qualitative approach using interviews within focus groups, on a sample consisting of (14) teachers, and through analyzing the data, the teachers ’attitudes were classified into four axes: what is related to the topics of the Islamic faith, and what is related to the methods of teaching the Islamic faith and its teaching aids, and what is related to the teacher, and what is related to the student, The results showed that most of the teachers ’attitudes were not positive towards teaching the Islamic Faith in all axes.
The relationship between Fear of COVID-19 and Loneliness among Yemeni students in China
Authors: Aldbyani Aamer
Published: January 2022

The current research aims to identify the level of fear of Covid-19 and loneliness among Yemeni students in China, and to determine the relationship between them and whether there are differences in the responses of the research sample according to gender. The research adopted the descriptive approach, and the questionnaire was used as a tool for collecting data from the research sample. The research community consisted of Yemeni students in China who were enrolled in the 2021 academic year, the sample is (301) male and female students who were selected using a simple random sampling method. The results showed that the level of fear of Covid-19 and the degree of loneliness were high. There is a positive relationship between fear of COVID-19 and loneliness. There are differences in fear of Covid-19 according to the gender variable in favor of males, and differences in loneliness in favor of females.
Cyber-bullying (bully-victim) Among University Students in Jordan regarding Specialization, GPA, Birth Order, Age, and Gender
Authors: صبحي كفينة آية , قسيم هيلات مصطفى
Published: January 2022

The current study aimed to reveal the cyber-bullying (bully – victim) among university students in Jordan regarding specialization, GPA, birth order, age, and gender. To achieve the objectives of the study, the Cyber-bullying (bully – victim) scale, developed by (Al-Shennawi, 2014), was applied after verifying its psychometric properties. The study sample included 400 male and female students (105 males, 295 females) selected through a stratified random sampling in the academic year of 2019/ 2020.
According to the bullying, the study results indicated that the Cyber-bullying level (bully) was low. The results also showed statistically significant differences in the overall degree of Cyber-bullying (bully) due to specialization in favor of Science Faculties and gender in favor of males. The results also indicated no statistically significant differences in the overall degree of Cyber-bullying (bully) due to GPA, birth order, and age.
As for Cyber-bullying (the victim), the results showed that the level of the Cyber-bullying (the victim) was low. The results also indicated statistically significant differences in the overall degree of the Cyber-bullying (the victim) attributed to birth order in favor of the last son and gender in favor of males. The results also indicated no statistically significant differences in the overall degree of the Cyber-bullying (the victim) attributed GPA, specialization, and age.
The study recommends more care and monitoring for males and their last son, according to their birth order, to protect them from cyberbullying
Incertidumbre ante la enfermedad COVID-19 en personal de enfermería de hospitales de Morelia, México
Authors: Ruiz-Recéndiz Ma. de Jesús , Jiménez Arroyo Vanesa , Huerta-Baltazar Mayra Itzel , Alcántar-Zavala Ma. Lilia Alicia , Herrera-Paredes José Manuel , González-Villegas Graciela
Published: January 2022

Introducción: La irrupción de enfermedades emergentes como la COVID-19 provoca una serie de alteraciones en las personas, incluyendo al personal de enfermería, quienes se encuentran en la primera línea de atención. Algunas afectaciones incluyen la presencia de ansiedad, depresión, estrés, insomnio y angustia. Objetivo: Evaluar el nivel de incertidumbre ante la enfermedad COVID-19 en personal de enfermería de segundo nivel de atención en Morelia, Michoacán, México. Metodología: Estudio descriptivo y transversal, en muestra de 160 enfermeras/os de hospitales públicos o privados de segundo nivel de atención, muestreo no probabilístico a conveniencia contactados vía Facebook. Se incluyeron enfermeras en atención directa a pacientes, utilizando Escala de Incertidumbre ante la Enfermedad en versión comunitaria modificada y cédula de datos sociodemográficos y laborales. Se empleó estadística descriptiva y chi cuadrada. Se respetó el anonimato de los participantes. Resultados. La mayoría de los participantes fueron mujeres (87.5%), licenciadas en enfermería (63.1%), edad promedio de 36.7 años (DE=8.5) y 36.9% habían tenido contacto con pacientes COVID-19. La incertidumbre total fue moderada en 56.9% y en personal de enfermería en contacto con pacientes COVID-19 fue 64.8%. Se encontró relación estadísticamente significativa (p=≤0.05) entre incertidumbre y sexo, escolaridad; capacitación en COVID-19 y uso de equipo de protección personal; disponibilidad de careta y equipo de protección personal; tomar curso de COVID-19 y tener contacto con pacientes COVID-19. Conclusiones. Existió incertidumbre moderada en el personal de enfermería de hospitales de segundo nivel de atención, con diferencias en variables personales, de capacitación y disponibilidad de material y equipo.
Analysis of the Empowerment Level of Rice Paddy Farmers in Abenggi Vilage Landono Distric, South Konawe Regency
Authors: Jusman Jusman , Sidu Dasmin , Hidrawati Hidrawati
Published: January 2022

Empowerment is a structured and planned process to increase the ability and independence of farmers in farm management. The study aims to analyze the program forms and the empowerment levels of lowland rice farmers. The research was conducted from April to December 2020 in Abenggi Village, Landono District, South Konawe Regency, Southeast Sulawesi. The location determination is done purposively, considering that the majority of the people work as farmers. The research population was 280 household lowland rice farmers, and the sample was 15% of the total members of the farmer population of 42 respondents. The data were analyzed qualitatively and quantitatively. Qualitatively analyze to explain the form of empowerment with research variables, including types of empowerment assistance. Quantitatively is used to determine the level of empowerment of lowland rice farmers by using variables to show economic and social empowerment, including the story of ability and independence of farmers in managing potential, planning and solving problems in the future, self-direction, and bargaining power. The results showed that the empowerment program for lowland rice farmers consists of capital assistance through the PUAP program, provision of infrastructures such as irrigation facilities, farm roads, and grain drying places. The lowland rice farmers are empowered on the economic aspect, but not yet on the social part.
Рівень психологічного благополуччя у працюючих жінок-матерів
Authors: Мелащенко Ю. П. , Гридковець Л. М.
Published: January 2022

У сучасному світі велике значення надається працевлаштуванню людини та її професійній реалізації. Жінки все більш активно входять у сферу не тільки професійної реалізації, а також політики. Водночас репродуктивна функція жінки є частиною її іншого значного покликання, а саме – матері. Проблематика ролі психологічного благополуччя у працюючих жінок-матерів набуває все більшої актуальності. Саме від вирішення цього питання залежить не лише розвиток родини жінки, але й суспільства в цілому. У нашому дослідженні  були виділені такі категорії жінок-матерів віком від 23 до 40 років: жінки, які добровільно розпочали/продовжили професійну реалізацію після народження дітей;  жінки, які добровільно обрали професію «матері та дружини»; жінки, які були вимушені обрати роботу без внутрішньої на те згоди; жінки, які вимушено мали відмовитися від професійної реалізації під тиском чоловіка чи родичів. Добровільно працюючі жінки переважно  задоволені робочим графіком, системою заохочення, взаємодією з колегами інших відділів, змістом роботи. Натомість, жінки-матері, які вимушено розпочали трудову діяльність найчастіше мають негативне ставлення до графіку та умов роботи. Водночас, спостерігається значна втома жінок, які розпочали/продовжили професійну діяльність після народження дітей, про що свідчить той факт, що лише третина з них відчувають задоволеність життям. Найвищий рівень психологічного благополуччя спостерігається у жінок-матерів, які добровільно вийшли на роботу і прагнуть гармонійного поєднання сім’ї та кар’єрного зростання. Жінки, які добровільно обирають сім’ю також мають високі показники психологічного благополуччя, хоча і в меншій мірі.  Найнижчі показники психологічного благополуччя спостерігаються у жінок, які перебувають під зовнішнім примусом щодо вибору сімейної реалізації без права на професійну реалізацію.
Освітні виклики в контексті додаткової професійної освіти
Authors: Пішеніна Т. І.
Published: January 2022

Зміна парадигми економічного розвитку, що веде до поглиблення інтеграції та глобалізації, кардинально оновлює характер освітніх і наукових, виробничих та конкурентних процесів. Епоха завершення життєвого циклу освіти в межах одного навчального закладу йде в минуле, а додана вартість нових знань тестується на конкретному локальному рівні кар'єрного зростання. Саме тому освітній процес стає все більш багатоаспектним з різних галузей, а кожна освітня спеціалізація формується під конкретну стадію розвитку особистості. Це означає, що економіка може стати конкурентоспроможною при активному розвитку бізнес-освіти, яка формує додаткові професійні компетенції та поглиблює знання у спеціалізованих нішах в виробничих процесах. До того ж, процес створення інноваційних освітніх технологій вже є не лінійним, а реалізується інтерактивно, в рамках єдиної економічної системи. Досліджено дві основні груп питань: вивчення значення додаткової професійної освіти як економічної категорії, та аналіз додаткової вартості нових знань та механізмів реалізації нових професійних компетенції. У статті ми покажемо, що концепція безперервної освіти передбачає постійний розвиток фахівця, що дозволяє йому залишатися конкурентоспроможним на ринку праці. Розвиток дистанційних освітніх технологій сприяє отриманню освіти без відриву від роботи, а різноманітні методи утримання співробітника на робочому місці дозволяють роботодавцю інвестувати не тільки в специфічний, але і в загальний капітал працівника. Питання формування додаткових професійних компетенцій дозволяє створити різноманітні, повноцінні фундаментальні знання. Наявність цих знань необхідно на сучасному рівні розвитку економіки для її модернізації відповідно до вимог переходу на новий технологічний уклад.
Improvement of the Chemosensitivity of Gastric Carcinoma Cells by Celastrus orbiculatus Extracts
Authors: Wang Yuling , Wang Kai , Ding Shilei , Wang Shuguang , Gu Rubin
Published: January 2022

Gastric carcinoma is one of the most prevalent malignancies with high morbidity and mortality. While chemotherapy is the major means for the management gastric carcinoma, tumors gradually exhibit drug resistance. Therefore, there is a need for agents capable of enhancing the sensitivity of tumor cells to chemotherapy. Herein, we have examined the effect of Celastrus orbiculatus extracts on chemosensitivity of drug resistant gastric carcinoma cells. Human gastric carcinoma cells (MGC-803 and SGC-7901) were cultured in the presence of cisplatin for the selection of drug resistant gastric cells. Next, the effect of C. orbiculatus extracts on multiplication capacity of drug resistant MGC-803 and SGC-7901 cells was examined by a variety of measures. Following C. orbiculatus extract treatment, the multiplication and invasiveness of drug resistant MGC-803 and SGC-7901 cells declined remarkably, with increased apoptosis and decreased levels of β-catenin, c-Myc, and cyclin D1 proteins, protein markers critical to cell proliferation, differentiation, and apoptosis. In summary, C. orbiculatus extract can effectively improve the sensitivity of cisplatin resistant gastric carcinoma cells to cisplatin and promote the apoptosis of tumor cells through the inhibition of the expression of proteins associated with the Wnt/β-catenin axis.
TO THE QUESTION ABOUT TWO CULTURAL-CHRONOLOGICAL GROUPS OF FLINT INVENTORY OF THE KRASNY GORODOK SITE
Authors:   Samara State University of Social Sciences and Education, Andreev K.M. , Borodulin K.I. ,   Samara State University of Social Sciences and Education
Published: January 2022

The Krasny Gorodok site, explored in the late 1980s, has long attracted the attention of specialists in the Neolithic. There archaeologists discovered a small but very interesting collection of ceramics. At the same time, the flint complex of the site raised several questions even at the stage of primary comprehension of the material, and researchers made assumptions about the presence of two cultural-chronological groups of flint materials in the complex of the site. In connection with the expansion of the source base on the Early Neolithic and Mesolithic of the forest-steppe Volga region, as well as the acquisition of a significant array of natural science data, it became necessary to verify the conclusions drawn by more than a quarter of a century ago. In particular, the question of the homogeneity of the flint collection of the site and the possibility of identifying an early admixture remains relevant. During the reanalysis of the flint collection of the Krasny Gorodok site, about 600 units of stone artifacts were examined. This complex was divided into two groups depending on the color and quality characteristics of the flint. The first group is represented by artifacts made of high-quality flint of gray color and its various shades. The second group includes artifacts made of low-grade colored flint, mainly brown and of various shades of brown, without a stable shape. The first group is characterized by a large orientation towards obtaining plates of a regular shape and their relatively high specific gravity (23%). In addition, this type of raw material was used to make all the angular cutters on the plates found at the site and, in general, most of the tools were made from plate blanks. The collection of tools made of colored flint is less indicative, however, one can state a lesser orientation towards obtaining plates from this type of raw material and, predominantly, their irregular shape, while few tools were made on flakes and chips. In our opinion, the marked differences between the first and second groups of stone products from the site are of a cultural and chronological nature. The first group of flint, in terms of raw materials, shape and technique of making tools and applying retouching on them, can be attributed to the era of the late Mesolithic of the forest-steppe Volga region. The second group, in terms of the nature of the raw materials and the morphology of tools, belongs to the Early Neolithic.
LABOR DAILY LIFE OF THE SOVIET ELITE IN LENINGRAD IN THE ERA OF LATE STALINISM
Authors:   St. Petersburg State University, Amosova A.A.
Published: January 2022

The article presents the research of the working norms and practices of the Soviet elite in the 1945-1950. The main attention is paid to the political biographies of the chairmen of Leningrad local government (Soviets). The research is based on methods of the oral history and the history of emotions; its source base includes documents from the archives of St. Petersburg, Moscow, and Crimea. The studied generation of Leningrad leading cadres came to government positions in the late 1930s, after the repressions of the "Great Terror". The members of the Soviet elite passed the testing of their professional skills during World War II and the Blockade of Leningrad, and directed the forced postwar reconstruction of the national economy. In the late 1940s, they became victims of the so-called “Leningrad affair”.
Model for glaciotectonism
Authors: Aber J. S.
Published: January 2022

Dislocated, thrusted, and folded masses of soft bedrock and drift have been described throughout the glaciated portions of central North America and northern Europe, and the origin of these surficial deformations has mainly been settled in favor of glacioteconic causes. The model for g]aciotectonic deformation described here consists of two stages: (1) initial stage of pro glacial or ice-marginal thrusting and stacking of large floes during glacier advance over permafrozen terrain, and (2) subsequent stage of subglacial shearing and penetrative deformation of previously-thrusted floes, when ice overrides the area. Ice thrusting takes place along a basal permafrost decollement, where high pore-water pressure is de­veloped, and floes are pushed as permafrozen slabs forward and upward in front and beneath the toe of the advancing glacier to form a topographic ridge (Stauchmoranen or kuppelbakke ). Once the ice overrides the ridge of thrusted floes, subglacial deformation by basal shearing may create glaciodynamic melange. Most glaciotectonic disturbances are thought to develop in a largely frozen state, and the possibility of large-scale subglacial thrusting beneath thick ice or far back from the ice margin is generally believed negligible. The majority of severe glaciotectonic deformations in central North America and northern Europe are found in transitional zones, which separate the central glaciated zones characterized by deep glacial erosion from marginal zones, where glacial deposition was the rule. Glacial thrusting provides a mechanism for stripping sedimentarycover off the Canadian and Fennoscandian shields during repeated Pleistocene glaciations.
Evaluation of tranexamic acid after total hip arthroplasty over 60 years old in China: a Systematic Review and Meta-analysis
Authors:   Xi'an jiaotong university, Luo Pan , Gao Fuqiang , Zhang Nianfei , Yu Hongwei , Xu Ke , Xu Peng
Published: January 2022

Review question / Objective: The purpose of this meta-analysis was to evaluate the efficacy of tranexamic acid after total hip arthroplasty in patients older than 60 years old in China by meta-analysis. Participant or population: All trials included in our study meet the following criteria: (1) All studies were original RCTs; (2) The mean age of patients for each study was ≥ 60 years old; (3) Patients were received total hip arthroplasty in all studies; (4) All studies included oral and iv or topical groups, with a comparison of outcomes between the two groups; (5) The full text of the included literature can be obtained, and the measurement data of hemoglobin drop, total blood loss, transfusion rate, complication, length of stay can be extracted. The following studies were excluded from the meta-analysis: nonrandomized studies; the patients with age<60; studies not suitable with the inclusive criteria; and articles for which we were unable to obtain the full text and relevant data for pooled analysis.
Hiệu quả của phương pháp oxy hóa qua màng ngoài cơ thể (ECMO) trong hỗ trợ điều trị hội chứng suy hô hấp cấp nguy kịch trên bệnh nhân Covid
Authors: Truong Tuan Anh
Published: January 2022

TÓM TẮT

Sự bùng phát của hội chứng viêm đường hô hấp cấp do coronavirus 2 (SARS-CoV-2) nhanh chóng trở thành đại dịch trên toàn thế giới với hơn 40 triệu người mắc và hơn 1 triệu người chết tính đến ngày 17 tháng 10 năm 2020. Nhiều bệnh nhân COVID-19 được báo cáo cho thấy rằng có thể dẫn đến suy hô hấp cấp cần chăm sóc đặc biệt (ICU) và thiết bị hỗ trợ thở và bệnh cảnh có thể nhanh chóng tiến triển thành chứng suy hô hấp cấp (ARDS) với thiếu oxy ở mức độ nặng và gây ra tử vong dù đã có sự hỗ trợ của thiết bị hỗ trợ thở, cả 2 khả năng này thậm chí có thể cùng xảy ra. Các tổ chức quốc tế và các chuyên gia trong lĩnh vực này khuyến nghị sử dụng ECMO cho những bệnh nhân ARDS bị bệnh nặng có COVID-19. Tuy nhiên, tỷ lệ sống sót là rất thấp trong những trường hợp được sử dụng ECMO với COVID-19 trong đợt đầu tiên. Nghiên cứu của chúng tôi nhằm đánh giá kết quả bước đầu ứng dụng kỹ thuật ECMO trong hỗ trợ điều trị hội chứng suy hô hấp cấp nguy kịch trên bệnh nhân COVID-19 tại trung tâm hồi sức bệnh viện Trung ương Huế.
ABSTRACT

EFFECTIVENESS OF EXTRACORPOREAL MEMBRANE OXYGENATION (ECMO) IN THE TREATMENT OF ACUTE RESPIRATORY DISTRESS SYNDROME IN PATIENTS WITH COVID-19

The outbreak of acute respiratory syndrome caused by coronavirus 2 (SARS-CoV-2) quickly developed into a worldwide pandemic with more than 40 million people infected and more than 1 million dead as of October 17, 2020. Numerous patient reports COVID-19 can lead to acute respiratory failure requiring intensive care (ICU) and ventilators, and it can rapidly evolve into a certificate of acute respiratory failure (ARDS) with red oxygen in the heavy and death, despite the protective ventilator, even both. International organizations and experts in the field recommend ECMO for critically ill ARDS patients with COVID-19. However, survival is very low in the ECMO - corrected case series with COVID-19 during the first COVID-19 wave. Our study aimed to evaluate the results of the initial application of transmembrane oxygenation (ECMO) technique in the support of critical acute respiratory distress syndrome on COVID-19 patients at the hospital resuscitation center of Hue central hospital.

Keywords: ECMO, ARDS, COVID-19.
Một số biến thể virus Sars-Cov-2 mới gây bệnh Covid-19 và phương pháp xét nghiệm chẩn đoán Sars-Cov-2 tại Bệnh viện Trung ương Huế
Authors: Tran Thua Nguyen
Published: January 2022

TÓM TẮT

Chủng vi-rút gây bệnh COVID-19 là một loại virút Corona, một họ vi-rút lớn. Vi-rút Corona được đặt tên theo những chiếc gai giống như vương miện trên bề mặt vi-rút. Các nhà khoa học theo dõi những thay đổi ở vi-rút này, bao gồm cả thay đổi trên các gai ở bề mặt của chúng. Những nghiên cứu này bao gồm phân tích di truyền của vi-rút, đang giúp các nhà khoa học hiểu rõ các thay đổi của vi-rút tác động như thế nào với cách lây lan và điều gì sẽ xảy ra với những người nhiễm biến thể đó. Một số biến thể SARS-CoV-2 mới đã được mô tả là dễ lây truyền hơn, có thể thoát khỏi cả miễn dịch tự nhiên và miễn dịch do vắc xin và có thể ảnh hưởng đến tỷ lệ mắc và tử vong do COVID-19
Nhận xét đặc điểm lâm sàng, cận lâm sàng và kết quả hóa trị bệnh u lá nuôi thời kỳ thai nghén tại Bệnh viện K
Authors: Han-Thi Thanh Binh
Published: January 2022

TÓM TẮT

Mục tiêu: Nhận xét một số đặc điểm lâm sàng, cận lâm sàng và kết quả hóa trị bệnh u lá nuôi thời kỳ thai nghén.

Phương pháp: Nghiên cứu mô tả hồi cứu kết hợp tiến cứu. 36 bệnh nhân nữ được chẩn đoán xác định là u lá nuôi thời kỳ thai nghén từ tháng 01/2015 đến 10/2020, được phân loại thành nhóm nguy cơ thấp và cao. Nhóm nguy cơ thấp được điều trị bằng Methotrexate đơn trị. Nhóm nguy cơ cao được điều trị phác đồ EMA/CO (etoposide, methotrexate, actinomycin D/leucovorin calcium, vincristine, cyclophosphamide).

Kết quả: Tuổi hay gặp nhất là > 40 tuổi. Số bệnh nhân vào viện vì ra máu âm đạo chiếm cao nhất 52,8%. Đa số bệnh nhân có Beta - HCG ban đầu < 100000 chiếm 83,3%. Thể mô bệnh học hay gặp nhất là ung thư nhau thai với 50%. Tổn thương di căn phổi chiếm cao nhất 53,8%. Tỷ lệ bệnh nhân có nguy cơ thấp và cao là như nhau chiếm 50%. Phác đồ Methotrexate đơn thuần: đáp ứng hoàn toàn là 83,3%. Phác đồ EMA/CO: tỷ lệ đáp ứng chung là 83,3%. Tỷ lệ bệnh nhân có độc tính độ 3,4 chiếm tỷ lệ nhỏ, chủ yếu trên huyết học.

Kết luận: Các phác đồ cho kết quả tốt, tỷ lệ đáp ứng cao và an toàn. ABSTRACT

REMARKS ON CHARACTERISTICS OF CLINICAL, SUBCLINICAL, AND RESULTS OF CHEMOTHERAPY ON GESTATIONAL TROPHOBLASTIC NEOPLASIA PATIENTS IN K HOSPITAL

Objective: To remark characteristics of clinical, subclinical, and results of chemotherapy on gestational trophoblastic neoplasia patients.

Methods: A retrospective combined prospective study was conducted on 36 women with low and high risks of gestational trophoblastic neoplasia from January 2015 to October 2020. The low - risk group was treated with methotrexate alone. The high - risk group was treated with EMA/CO (etoposide, methotrexate, actinomycin D/ leucovorin calcium, vincristine, cyclophosphamide).

Results: The most common age was > 40 years old. Patients admitted to the hospital because of vaginal bleeding accounted for the highest rate of 52.8%. Most of the patients (83.3%) had initial Beta - HCG < 100000. The most common histopathological form is choriocarcinoma, with 50%. Lung metastatic lesions accounted for the highest (53.8%). The proportion of low - risk and high - risk patients was about 50%. The complete response rate was 83,3% with the methotrexate regimen and was 83,3% with EMA/CO regimen. The proportion of patients with grade 3.4 toxicity accounted for a small proportion, mainly in hematology.

Conclusion: The regimens had good results, high response rates, and safety.

Keyword: Gestational trophoblastic neoplasia, methotrexate, EMA/CO.
ULUSLARARASI BOYUTU İLE TÜRKİYE’DEKİ DON KAZAKLARIN GÖÇÜ (BCS'21)
Authors: KIYANÇ Sinan
Published: January 2022

Bu çalışmada Türkiye’de (Manyas-Kocagöl Köyü/Akşehir-Kazak Köyü’nde) yaşayan Don Kazakların 1962 ve 1963 yılındaki göçü uluslararası boyutu ile ele alınmaktadır. Osmanlı Devleti’nin Karadeniz’in kuzeyini fethi sürecinde mücadele ettiği Don Kazakların bir kısmı, yaşanan siyasi olaylar sonrasında Osmanlı Devleti himayesinde girmiştir. Önce Tuna Boyuna yerleştirilen Don Kazakları, farklı tarihlerde Anadolu’ya, Kocagöl ve Beyşehir Gölleri kenarına, göç etmiş, 1963 yılına kadar bu topraklarda yaşamışlardır. Bu sayede Anadolu’nun birçok gölünde tatlı su balıkçılığı yapmışlardır. Don Kazakları çeşitli tarihleri Rusya’ya göç etmişlerdi. Son göçleri ise 1962 yılında Rusya’ya, 1963 yılında ise ABD’ye gerçeklemişti.

Don Kazakları inancında yedi göbeğe kadar evlenmeleri günahtı. Uzun yıllar yaşadıkları Anadolu’da yıllardır evlenmeler nedeniyle neredeyse tamamı akraba olmuştu. Bu durum evlenememelerine, beraberinde göç kararı almalarına neden olmuştur. Böylece Don Kazakların göç süreci başlamıştır. Göç kararı her ne kadar içsel nedenden dolayı alınsa da bu kararın ortaya çıkmasında ve yönlenmesinde uluslararası gelişmeler önemli rol oynamıştır. Soğuk Savaş sürecinde yaşanan gelişmeler, ülkedeki siyasi olaylar göç kararında önemli rol oynamıştır. Bu kararın alınmasında başından itibaren dâhil olan Sovyetler Birliği, topluluğun kendi topraklarına göç etmesi için yoğun propaganda faaliyeti yürütmüştür. Bu sürece ABD’nin de ünlü yazar Lev N. Tolstoy’un kızı Aleksandra Tolstoy’un kurduğu Tolstoy Vakfı aracılığıyla dâhil olması, iki ülke arasında karar vermeye çalışan topluluk arasında ayrışmalara neden olmuştur. Böylece Soğuk Savaş sürecinde Türkiye topraklarında ABD ve Sovyetler Birliği karşı karşıya gelmiştir. Araştırmada Don Kazakların göç kararının ortaya çıkışı ve sonrasındaki meydana gelen gelişmeler, uluslararası boyutu, ülke ilişkileri ve kamuoyuna etkisi arşiv belgeleri başta olmak üzere dönemi aydınlatan anı, hatırat ve araştırma eserleri kapsamında elde edilen bilgi ve bulgularla ortaya konulmaktadır.
Ali Şuûrî Efendi'nin Hayatı ve İlmî Şahsiyeti (BCS'21)
Authors: ÖZİŞ Adem
Published: January 2022

Balıkesir’de dünyaya gelen Ali Şuûrî Efendi, 19. yüzyıl Osmanlı ilim dünyasının dikkat çeken simalardan birisidir. Tahsil hayatına Balıkesir’de başlamış, İstanbul’a giderek önemli ilim adamlarından dersler almış ve sonra doğduğu topraklara geri dönmüş olan Şuûrî Efendi, Nişancı Paşa-yı Cedid, Mâlulzâde ve Alay Beyi gibi muhtelif medreselerde görev almıştır. Birçok önemli müderris, müftü ve siyasetçi yetiştiren ve halkın büyük saygı beslediği Ali Şuûrî, bir süre sonra Balıkesir müftüsü olarak görevlendirilmiş ve Koca Müftü lakabıyla ünlenmiştir. Daha çok fetva ve eğitim işleriyle meşgul olan Şuûrî Efendi, dinî ilimlerin yanında geometri, matematik, coğrafya konularında da kendini yetiştirmiştir. Nakşibendiye ve Kadiriye tariklerine mensup olan Şuûrî Efendi, tasavvuf, fıkıh, kelâm gibi alanlarda kitaplar telif etmiş, ayrıca Dâru’n-Nâfia adlı bir medrese ve karşısına da bir kütüphane yaptırmıştır. Aynı zamanda çeşme inşası, şadırvan, suyolları gibi eserleri tamir ettirmiş ve bir mescid tadilatını gerçekleştirmiştir. Hüsn-i hat sanatında da mahir olup ta‘lik yazıda ustalaşan ve şehrin bazı camilerini hatlarıyla süsleyen Ali Şuûrî Efendi, 1868 yılında Balıkesir’de vefat etmiş ve kütüphanesinin haziresine defnedilmiştir. Bu bildiri, Balıkesir için önemli faaliyetlere imza atan Ali Şuûrî Efendi’nin hayatı ve ilmî şahsiyetini arşiv kaynaklarından elde edilen bilgiler ışığında incelemektedir.
Don Kazaklarının Manyas Gölü Kıyısına Göçünün Politik Ekolojisi (BCS'21)
Authors: ARI Yilmaz
Published: January 2022

Bu çalışma Don Kazaklarının Manyas Gölü kıyısına yerleşmeleri ve burada uzun süre yaşadıktan sonra toplu olarak Türkiye’den ayrılmalarını çeşitli yönleriyle incelemeyi amaçlamaktadır. Sözü edilen grup 1654 yılında Rusya’da başlatılan dini ve siyasi reform hareketleri sonunda Rus otoriteleri ile anlaşamayarak önce Kuban bölgesine, oradan da kademeli olarak Anadolu’ya göç ederek bazı göl kıyılarına yerleştirilmişlerdir. Manyas Gölü’nün güneybatı kesimindeki Kocagöl köyü de Kazakların yerleştirildikleri köylerden biridir. Kazaklar Kocagöl’de 200 yıldan fazla yaşamış ve ticari balıkçılığı Manyas Gölü’ne getirmişlerdir. Sürekli sınır boylarında yaşayan, savaşlara ve baskınlara karışan, oldukça tutucu ve geleneksel bir toplum olan Kazaklar vergiden ve askerlikten muaf olarak Anadolu’da uzun yıllar yaşamışlardır. Bu sırada Rusya’da baskı gördükleri için devam ettiremedikleri dini inançlarını ve geleneksel yaşam tarzlarını başarıyla korumuşlardır. Ancak bazı kültürel, sosyolojik ve politik nedenlerle 1962 yılında toplu olarak Türkiye’den ayrılmışlardır. Bu çalışma Don Kazaklarının göçlerini, yerel topluluklarla ilişkilerini, yerel ekoloji üzerindeki etkilerini ve Türkiye’den göç etmelerinin sebeplerini ele almaktadır.
YAMAN KORAY’IN ROMANLARINDA ERDEK VE KAPIDAĞ ÇEVRESİ (BCS'21)
Authors: SUTCU Tevfik
Published: January 2022

Yaman Koray, Türk Edebiyatında başta roman türü olmak üzere yayınladığı eserlerinde Türkçeyi güzel kullanan, hayatında ve eserlerinde denize olan tutkusu ile dikkat çeken; ancak bir dönem çok okunmasına rağmen ne yazık ki eserleri üzerine hak ettiği kadar dikkat çekilmemiş ve akademik incelemeler yapılmamış yakın dönemin önemli yazarlarındandır. Cumhuriyet Dönemi Edebiyatının tanınmış ve üretken romancılarından Mebrure Sami Alevok’un oğlu olan Koray, 1954 sonrasında babası ile annesinin ayrılmaları üzerine Erdek’e yerleşmiş ve Alevok Motel’i kurarak işleten annesiyle birlikte 1989 yılına kadar Erdek’te yaşamıştır. Türk edebiyatının zenginleşmesinde büyük katkısı olan Koray’ın 1954 sonrasındaki 30 yıldan fazla süren Erdek hayatının etkisinde, Erdek, Hayırsız Adası, Ekinlik Adası, Fener Adası, Marmara Adası, Kapıdağ Yarımadası ve bu bölgenin gözlemlerine dayanarak yazılmış olan eserleri “Deniz Ağacı” (1962), “Gelin Taşı” (1963), “Sığırcıklar” (1967) ve “Mola” (1970) adını taşıyan romanlarıdır. Erdek çevresi ve Kapıdağ Yarımadası ile Marmara Adası köylülerine ve balıkçılarına yer veren bu romanların dışında; yazarın “Badanalı Yüzler” (1983), “Ne Cennet Şey Şu Deniz” (2005), “Kuyudaki Adam” (2005), “Bir Ömür Yetmez” (2006), Annelerin En Güzeli (2021), Bumerang (2021) isimli kitapları ise doğrudan doğruya Erdek çevresi ile ilgili olmasa da Erdek ve çevresinde öğrendiklerine, yaşadıklarına ve gözlediklerine göndermelerde bulunan diğer eserleridir. Türkiye’nin en eski dalgıçlarından biri olan Koray’ın özellikle “Deniz Ağacı”, “Gelin Taşı”, “Sığırcıklar” ile “Mola” romanları, Erdek, Kapıdağ Yarımadası ve Marmara Adası köyleri çevresindeki balıkçıların, denizcilerin ve bölgede yaşayan insanların zorlu hayat koşullarını gözler önüne sermesi bakımından çok önemlidir. Bu romanlar, yazıldıkları dönemin zorlu hayat koşullarına, bölgenin tarihî yerlerine, maddî kültür varlıklarına, tabiatına, denizine ve balıkçılığına ayna tutarken, yazıldıkları dönemdeki bölge insanlarının sosyal ilişkilerini, halk inanışlarını, bölgede yaşanan fiziksel ve maddî zorlukları, sosyal hayatı ve bu hayata yansıyan siyasi atmosferi ortaya koyması bakımından da kıymetlidir. Yaman Koray’ın dalgıçlık ve denizcilik konusundaki geniş bilgisi yanında, yazar olarak çok iyi bir gözlemci olması, bölgeyi ve bu bölge insanını gerçekçi bir gözle tanımamıza fırsat verirken, yazarın bu romanları ile bölgenin tarımsal üretimini, endemik bitki örtüsünü, balıklarını, balıkçılığını, Erdek bölgesinde turizm alanında meydana gelen değişme ve gelişmeleri izlememiz de mümkün olmaktadır. Bu araştırmada Koray’ın bütün eserleri analiz edilerek, öncelikle “Deniz Ağacı”, “Gelin Taşı”, “Sığırcıklar” ve “Mola” romanlarında Erdek ve Kapıdağ çevresi coğrafyasının, tabiatının, denizinin; eserlerin yazıldığı dönemdeki sosyal ve siyasi hayatın ne biçimde yaşandığı incelenirken, yazarın diğer eserlerinde Erdek çevresi insanının yazarın hafızasında nasıl yer bulduğu ve onlara kitaplarında göndermelerde bulunduğu da özellikle dikkatlere sunulacaktır.
Osmanlı Arşiv Belgelerinde Kyzikos Kazıları (BCS'21)
Authors: ÇAĞMAN Engin
Published: January 2022

Makalenin amacı Osmanlı Devleti döneminde yerli ve yabancı şahısların Kyzikos antik kentine ilgisini, bölgede çeşitli amaçlarla giriştikleri kazı faaliyetlerini ve devletin bu faaliyetlere yaklaşımını ortaya koymaktır. Çalışma, Osmanlı arşiv belgeleri temelinde ele alınmıştır. Günümüzde Balıkesir’e bağlı Erdek ilçesinin sınırları içinde kalan ve halen arkeolojik kazıların devam ettiği bölge, Osmanlı arşiv belgelerinde bazen Belkıs harabeleri bazen de Kyzikos olarak ifade edilmektedir.

19. yüzyılın sonlarından itibaren hem yerli hem de yabancı araştırmacıların Kyzikos’a ilgisinin arttığı görülmektedir. Resmî araştırmacıların incelemeleri dışında bölge halkının da çeşitli amaçlarla kentin harabelerinden faydalanmaya çalıştığı anlaşılmaktadır. Buna ilave olarak kalıntılar İstanbul’da, bazı inşaat ve tadilat faaliyetlerinde kullanılmıştır. Avrupalıların kazı çalışmalarının resmi gerekçesi bilimsel araştırmalar olarak görülmekle birlikte o dönemde Osmanlı coğrafyasındaki antik eserlerin ülke dışına kaçırıldığı göz önüne alındığında Kyzikos’da da benzer amaçla hareket ettiklerini ileri sürmek mümkündür.

Osmanlı Devleti’nin de Kyzikos’un öneminin farkında olduğunu söyleyebiliriz. 1869’da kurulan Müze-i Hümayun’un ilk müdürü Edward Goold’un aynı yıl Kyzikos harabelerine gitmesi ve İstanbul’a çok sayıda eski eser getirmesi bunun göstergesidir. Buna ilave olarak Maarif Nezareti’nin, özel şahısların imparatorluk coğrafyasında kazı yapmasına olumlu yaklaşırken Kyzikos’ta izin vermek istememesi ve bu kentte kazıyı bizatihi devletin yapması konusundaki ısrarı konuyla ilgili başka bir örnektir. Ayrıca yine Müze-i Hümayun’un kurulduğu yıl eski eserlerin korunmasını ve kazıların bir düzen çerçevesinde yapılmasını amaçlayan “Asar-ı Atika Nizamnamesi” ihdas edilmiş, Kyzikos kazılarında nizamnameye uyulması konusunda gayet hassas davranılmıştır.
NITRATE REMOVAL IN WOODCHIP DENITRIFICATION BIOREACTOR – AN APPROACH COMBINING MATHEMATICAL MODELLING AND PI CONTROL
Authors: Nečiporenko Anatolij , Ivanauskas Feliksas , Dabulytė-Bagdonavičienė Jurgita , Povilaitis Arvydas , Laurinavičius Valdas
Published: January 2022

A mathematical model of nitrate removal in woodchip denitrification bioreactor based on field experiment measurements was developed in this study. The approach of solving inverse problem for nonlinear system of differential convection-reaction equations was applied to optimize the efficiency of nitrate removal depending on bioreactor’s length and flow rate. The approach was realized through the developed algorithm containing a nonlocal condition with an incorporated PI controller. This allowed to adjust flow rate for varying inflow nitrate concentrations by using PI controller. The proposed model can serve as a useful tool for bioreactor design. The main outcome of the model is a mathematical relationship intended for bioreactor length selection when nitrate concentration at the inlet and the flow rate are known. Custom software was developed to solve the system of differential equations aiming to ensure the required nitrate removal efficiency.
Treatment Adherence among Tuberculosis patients: A Concept Analysis
Authors: Lisum Kristina , Waluyo Agung , Nursasi Astuti Yuni
Published: January 2022

BACKGROUND OF THE STUDY: The principal difficulty of long-term tuberculosis (TB) treatment is patient nonadherence. During pandemic, nonadherence of TB treatment affects mortality since TB patients are more vulnerable with Covid-19. AIM OF THE STUDY: The purpose of this concept analysis was to clarify and analyze the concept of treatment adherence. METHODOLOGY: Analysis concept was conducted using the Walker and Avant’s method from relevant studies published by EBSCO, PubMed, ProQuest, Wiley Online Library, and Springer between  2003 - 2021. RESULTS:  Five attributes characterizing the concept of treatment adherence from thirteen articles were identified: individual behavior, relationship, mutual participation, shared decision making, and agreement. CONCLUSION: This concept analysis revealed that TB treatment adherence involves many aspects, including the patient, family, society, health care professionals, and policy. These findings help to understand the contribution of major attributes, thereby promoting the body of knowledge on TB and contributing to its elimination during COVID-19 pandemic.
The Application of Image Segmentation to Determine the Ratio of Peritumoral Edema Area to Tumor Area on Primary Malignant Brain Tumor and Metastases through Conventional Magnetic Resonance Imaging
Authors: Kumala Wardani Bestia , Yueniwati Yuyun , Naba Agus
Published: January 2022

BACKGROUND: Primary malignant brain tumor and metastases on the brain have a similar pattern in conventional Magnetic Resonance Imaging (MRI), even though both require entirely different treatment and management. The pathophysiological difference of peritumoral edema can help to distinguish the case of primary malignant brain tumor and brain metastases.

AIM: This study aimed to analyze the ratio of the area of peritumoral edema to the tumor using Otsu’s method of image segmentation technique with a user-friendly Graphical User Interface (GUI).

METODS: Data was prepared by obtaining the examination results of Anatomical Pathology and MRI imaging. The area of peritumoral edema was identified from MRI image segmentation with T2/FLAIR sequence. While the area of tumor was identified using MRI image segmentation with T1 sequence.

RESULTS: The Mann-Whitney test was employed to analyze the ratio of the area of peritumoral edema to tumor on both groups. Data testing produced a significance level of 0.013 (p < 0.05) with a median value (Nmax-Nmin) of 1.14 (3.31-0.08) for the primary malignant brain tumor group and a median value (Nmax-Nmin) of 1.17 (10.30-0.90) for the brain metastases group.

CONCLUSIONS: There was a significant difference in the ratio of the area of peritumoral edema to the area of tumor from both groups, in which brain metastases have a greater value than the primary malignant brain tumor.