bluuebunny/crossref_metadata_2025_split huggingface dataset:
High power selective laser melting of crack sensitive nickel-base alloy CM247LC, including dimensional analysis and modelling
Authors: Gerstgrasser Marcel , Cloots Michael , Jakob Raphael , Stirnimann Josef , Wegener Konrad 
Published: November 2021

Abstract
Compared to reference parameters in the low power and scan velocity range, which lead to dense and crack-free CM247LC LPBF samples due to in-situ crack healing, high power, high scan velocities and increased laser beam diameters are investigated, to decrease the production time further. By keeping the maximum laser intensity from the reference and the laser power to scan velocity ratio constant, the intensity approach provides an initial estimation for the laser spot size regarding the measured Archimedean density and crack density in the high power and high scan velocity range. The investigated cracks are identified as re-melting cracks. Solidification or hot cracks are not observed, since the crack healing effect for those kinds of cracks still occurs. Furthermore, a melt pool depth range is discovered, where not only solidification cracks can be avoided, but also re-melting cracks, which are resulting from higher laser power inputs. This theory can be proven by further laser spot size optimization, where the melt pool depth comes closer to the mentioned range. The Archimedean density and crack density results, in case of the 600 W power parameter with 2400 mm/s scan velocity and a beam diameter of 164 µm, are close to the one obtained from the reference with 200 W, a scan velocity of 800 mm/s and a laser spot of 90 µm. With the intensity approach and laser beam diameter optimization, the production time can be reduced by 300%. Based on dimensional analysis, a model, which combines the samples density with the crack density through the melt pool depth, is presented. Six main and two additional process and laser parameters are taken into relation. The result from the model and the measured values from experiments are in good agreement. Additionally, the influence of the doubled layer thickness and an increased hatch distance by 50% with varying scan velocities on the Archimedean density and crack density is analysed.
Comparison of the Psychological Profile of Ankle Sprain Between Coper and Chronic Ankle Instability Individuals: Cross-sectional Study
Authors: Babakhanian Shima , Mansori Mohammad Hani , Ardakani Mohammad Karimizadeh , Naderifar Homa 
Published: November 2021

Abstract
Background: The aim of this study was to compare the psychological parameters in Coper individuals and people with chronic ankle instability (CAI).Methods: This study was a cross-sectional and comparative study. Sixty elite athletes, from multiple athletic disciplines, who have suffered from lateral ankle sprains at least once in the last two years, were selected as research subjects and were divided into two groups: Copers (n = 30) and CAI (n = 30). Classification of CAI, and coper groups were done by AJFAT, CAIT and FAAM self-report questionnaires. Athletes' psychological characteristics were measured using the Ottawa Mental Skills Assessment Tool (OMSAT-3). Multivariate analysis of variance (MANOVA) and independent t-test were used to evaluate the differences between groups at a significance level of 0.05. Results: The results showed there was a significant difference between the two groups in Goal setting, Self-confidence, Commitment, Relaxation, Fear control and Coping with stress, Focusing, Refocusing, and Mental practice (P <0.05). And Coper athletes scored higher than ankle instability athletes. But there were no significant differences between the two groups in the following parameters: Inactivation, Imagery, and Competition planning skills (P <0.05).Conclusion: The findings showed that athletes with CAI scored lower than Coper athletes on psychological exams. Given the importance of prioritizing the mental components of goal setting, imagery, relaxation, activation, and self-confidence, the design of the competition should be a priority for rehabilitation. Therefore, coaches and sports experts are recommended to focus and improve mental skills in athletes who suffer from sports injuries, to reduce the occurrence of repetitive sports injuries.
A Cross-Sectional Study to Compare Differences on Clinical and Laboratory Findings in Children with Seropositive and Seronegative Lupus
Authors: Salehi Shima , Shamsabadi Rozita Hosseini , Otukesh Hassan , Shiari Reza , Sharafi Monir 
Published: November 2021

Abstract
Background: Lupus is an inflammatory and autoimmune disease that involves various tissues and organs of the body. Identification of diagnostic elements to rapid identification of seronegative lupus cases is very important in order to prevent morbidity and progression of disease. This study aimed to compare clinical and laboratory findings of seropositive cases with seronegative lupus patients. Methods: This cross-sectional analytic study was performed on 43 children (17 seronegative and 26 seropositive) with lupus who were admitted to Ali Asghar Hospital during 2007-2017. Seropositive patients had anti-nuclear antibody (ANA) titration >1/80, while seronegative patients had ANA titration <1/80 (at the time of disease diagnosis). Clinical and laboratory findings were compared between two groups.Results: Serositis in patients with ANA- was significantly higher than ANA+ (41.17% vs. 23.07%; p = 0.042). ANA- group had higher autoimmune disease history than ANA+ group (42.85% vs. 15.0%; p = 0.041). The family history of the disease in the ANA- group was greater than ANA+ group (50% vs. 23.52%). The percentage of hypertensive patients in ANA- group was higher than ANA+ group (52.94% vs. 26.92%; p = 0.037). Neurologic symptoms in ANA+ and ANA- groups were 38.46% and 17.64%, respectively (p = 0.043). The frequency of patients with thrombocytopenia in ANA+ group was significantly greater than ANA- group (32% vs. 12.5%; p=0.041). There was no significant difference in other clinical and laboratory findings between two groups. Conclusion: Seronegative lupus patients had higher percentage of musculoskeletal symptoms, autoimmune disease history, familial history of disease, and hypertension, while neurological and thrombocytopenia symptoms were higher in seropositive patients compared to seronegative cases. Therefore, evaluation of these factors can be helpful to diagnosis of seronegative patients.
Modeling of Material Removal Morphology And Prediction of Surface Roughness Based On WEDM Successive Discharges
Authors: Li Zhaolong , Liu Yingtao , Cao Bingren , Li Wangwang 
Published: November 2021

Abstract
In this paper, a successive discharges material removal model is proposed to predict the surface roughness of the EN-GJL-250 (Grey Cast Iron) under different discharge parameters of Wire-cut electrical discharge machining (WEDM). Firstly, the finite element method (FEM) was used to analogue simulation the distribution of material surface temperature and flow field in the WEDM single pulse discharge machining process. According to the principle of energy conservation, the surface morphology and characteristic parameter size of a single pulse crater under different discharge parameters are simulated. Secondly, the discharge position is determined by the minimum gap width between the initial surface of the workpiece and the electrode wire during the establishment of the material removal model. Simulation results show: The magnitude of the single pulse discharge energy has an important influence on the morphology and characteristic size of the crater. Due to the different discharge energy, the increasing trend of crater radius, depth and flanging height is not synchronized, and the increase of crater radius is more obvious and rapid. Meanwhile, the final morphology of the WEDM machined surface is determined by the morphology size of a single pulse crater and the location distribution of discharge points. Finally, the same discharge parameters are used to verify the surface quality of machined materials. Experimental results show: The surface morphology of the WEDM workpiece is in good agreement with the material removal model, and the average relative error of surface roughness between the simulation results and the experimental results is 8.26%
Optical, Thermal, and Mechanical Properties of (Y1-xScx)2O3 Transparent Ceramics
Authors: Huang Jiquan , YANG Changliang , HUANG Qiufeng , DENG Zhonghua , WANG Yun , Li Xiaoyun , Zhou Zehua , CHEN Jian , LIU Zhuguang , GUO Wang 
Published: November 2021

Abstract
Sesquioxides such as Y2O3 and Sc2O3 are important optical materials, but the fabrication of their transparent ceramics remains a challenge due to the ultra-high melting point of over 2400 oC. In this work, a series of (Y1-xScx)2O3 transparent ceramics were successfully fabricated by a simple vacuum sintering process without any sintering additives, and the effect of Scandium (Sc) content on the crystal structure and optical/thermal/mechanical properties were evaluated. Y2O3 and Sc2O3 form a complete solid solution with a cubic bixbyite structure. The formation of (Y1-xScx)2O3 solid solution promotes the densification of ceramics, leading to the realization of high transparency close to the theoretical transmittance over a wide wavelength range of 0.35-8 mm. In particular, the in-line transmittance in the range of 0.6-6 mm remains above 80% for (Y1-xScx)2O3 with x = 0.23-0.31, while the pristine Y2O3 and Sc2O3 are opaque. Moreover, the mechanical properties including Vickers hardness (Hv), fracture toughness (KIC), and biaxial strength (δb) are evidently enhanced due to the solid solution strengthening, while the thermal conductivity is reduced due to the reduction of photon free path. This study demonstrates that forming of solid solution is a facile and universal approach for preparing sesquioxides transparent ceramics with high optical and mechanical quality.
Neuroblastoma in Children: Intraoperative Goal Directed Therapy, Intraoperative And Postoperative Outcomes
Authors: Kumba Claudine 
Published: November 2021

Abstract
Background: Neuroblastoma is the most common tumor in children. Anesthetic management can be challenging due to the localization and catecholamine-secreting characteristics of the tumor. We undertook a secondary analysis in a previous study to describe patients who underwent neuroblastoma resection.Objective: To describe intraoperative and postoperative outcomes in patients who underwent neuroblastoma resection and to propose optimal intraoperative management for postoperative outcome improvement.Methods: This was a secondary analysis of children who underwent neuroblastoma resection in the initial retrospective study.Results: There were 16 patients with a mean age of 39.3±22.1 months. Seven (43.8%) patients presented with intraoperative or postoperative complications. One (6.3%) patient had intraoperative broncholaryngospasm and difficult intubation. Two (12.5%) patients had intraoperative hemorrhagic shock. One patient (6.3%) had postoperative renal failure. Two patients (12.5%) had postoperative respiratory failure, and 3 (18.8%) patients had postoperative cardiocirculatory failure. One (6.3%) had postoperative pulmonary sepsis and septicemia. Thirteen (81.3%) patients were intraoperatively transfused. There was no in-hospital mortality.Conclusion: In this cohort, 43.8% of the patients had intraoperative and/or postoperative complications in terms of organ dysfunction or sepsis. A total of 81.3% of the patients received intraoperative transfusion. Neuroblastoma surgery can be a challenging situation where cardiovascular instability, high blood loss and transfusion requirements can be encountered. Consequently, preoperative preparation and optimal intraoperative management with validated tools in children could be necessary for a better postoperative outcome in this surgical setting.
Dynamic Analysis of a Phytoplankton-Fish Model with the Impulsive Feedback Control Depending on the Fish Density and Its Changing Rate
Authors: Fu Jingli , Hou Xiaoyu , Zhang Tonghua , Cheng Huidong 
Published: November 2021

Abstract
This paper proposes a comprehensive fishing strategy that takes into consideration the population density of fish and its current growth rate, which provides new ideas for fishing strategies. Firstly, we establish a phytoplankton-fish model with the impulsive feedback control depending on the density and rate of change of the fish. Secondly, the complex phase and impulse sets of this model are divided into three cases, then the Poincar´e map for the model is defined, and analyzed the properties of Poincar´e map. In addition, the sufficient and necessary conditions for the global asymptotic stability of the order-1 periodic solution and existence condition of order- k ( k ≥ 2) periodic solution are discussed. The action threshold depends on the density and rate of change of the fish, which is reasonable than earlier studies. The analysis method proposed in this paper also plays an important role in the analysis of impulse models with complex phase sets or impulse sets.
At the origin of Folklore studies in Karelia: G.S. Epiphanov and his time
Authors: Пашков А.М. 
Published: November 2021

В статье рассматривается возникновение фольклористики в Олонецкой губернии (Карелии) во второй четверти XIX в. Первыми фольклористами были ссыльные поэт-декабрист Ф.Н. Глинка и друг М.Ю. Лермонтова С.А. Раевский, а также выпускник местной гимназии В.А. Дашков и учитель Г.С. Епифанов. Особое внимание уделено анализу публикации Г.С. Епифанова «Заметки об Олонецкой стороне», испытавшей влияние сочинений Н.В. Гоголя и В. Скотта. Сделан вывод, что в отличие от работ других фольклористов, написанных в русле казенного патриотизма, эта статья Г.С. Епифанова отражала более независимую и отчасти оппозиционную позицию автора, из-за чего сам он подвергся гонениям властей.
The article reveals the origins of Folklore studies in Olonets province (Karelia) in the second half of the 19thcentury. First folklorists were an exiled poet and Decembrist Fyodor Glinka and Lermontov’s friend Svyatoslav Raevsky, also a local gymnasiumstudent Vasiliy Dashkov and a schoolteacher Grigory Epiphanov. The greatest attention is paid to the analysisof a publication by G. Epiphanov, «Notes about Olonets side», which influenced by the writings by Nikolay Gogol and Walter Scott. It is concluded that in the contrast to the works of other folklorists, written in the spirit of official patriotism, this G. Epiphanov’s article reflects a more independent and partly opposition author’s view, because of what he was persecuted by the authorities.
Russian and Slavic Orthodoxy in the ambassadorial report of Arseny Sukhanov 1650
Authors: Богданов А.П. 
Published: November 2021

В статье показано, что мотивация сербскими монахами в 1650 г. сожжения славянских книг на Афоне путем обращения к литературному источнику о негативном отношении греков к славянской письменности связана со сходством ситуаций середины XVII в. и времени Кирилла и Мефодия. Арсений Суханов, прекрасно зная литературные источники, не выдумал этот текст в публицистическом сочинении, каким представлялись в историографии его «Прения с греками о вере». Он изложил реальные обстоятельства дела в своем посольском отчете, где указанные сербами, русином и даже арабским иноком мотивы греков не играли существенной роли. Отчет, явивший нам пример русского и сербского книжного единства, превратился в публицистический памятник много лет спустя, в связи с Расколом Русской Церкви.
The article shows that motivation ascribed by Serbian monks in 1650 to the fact of burning Slavic books on Mount Athos by referring to literary source about negative attitude of Greeks to Slavic booklore is associated with similarity of the situation of the middle of 17th century and of the time of Cyril and Methodius. Arseny Sukhanov, who had a good command of the Slavs literary sources, did not invent this text in a pamphlet, as his «Debate with the Greeks about Faith» was often presented in historiography. He described real circumstances of the case in his ambassadorial report, where motives of Greeks, indicated by Serbs, Rusin and even Arab monk, did not play a significant role. The report, which provided us with an interesting example of shared Russian and Serbian literary tradition, turned into a pamphlet many years later, in connection with the Schism of the Russian Church.
Thinking of Everyday Life…
Authors: Серегина А.Ю. 
Published: November 2021

Представлена рецензия на сборник статей «Укрощение повседневности. Нормы и практики Нового времени» (сост. М. Неклюдова). Включенные в него исследования посвящены повседневным социальным практикам Нового времени в России и Европе и их конструированию при помощи нормативной литературы.
The author presents a review of the collection of articles under the title “The taming of everyday life. Norms and practices of Modernity” edited by M.S. Nekhlyudova. Studies published in the collection are focused on common social practices in Modern Russia and Western Europe, and the construction of these practices by various texts of instruction.
"Cultural Narrative" about European Identity in the Context of Personal Stories (Reflections on the Book by Orlando Figes)
Authors: Селунская Н.Б. , Карагодин А.В. 
Published: November 2021

Статья содержит рефлексии по поводу книги известного английского историка-рос-сиеведа О. Файджеса «Европейцы. Три жизни и рождение космополитической культуры», его подхода к репрезентации биографической истории И.С. Тургенева, П. Ви-ардо и Л. Виардо в контексте складывания общеевропейской культуры во второй по-ловине XIX века. Особое внимание уделено методологической значимости присутствующих в рецензируемой книге и формирующихся в современной историографии таких трендов как «новый нарратив», «история репрезентаций» и «новая биографическая история», а также дискуссии о смыслах концепта «европейскости» как характеристики над-этнической идентичности и о ее проявлениях на микро- и макро-уровнях в меняющемся и модернизирующемся историко-культурном пространстве Российской империи и Европы в XIX в.
The article contains reflections on the book by a famous English historian – Russian scholar O. Figes "Europeans. Three lives and the birth of cosmopolitan culture", his approaches to the representation of the biographical history of I. S. Turgenev, P. Viardot and L. Viardot in the context of the formation of pan-European culture in the second half of the XIX century. Special attention is paid to the methodological significance of such trends as "new narrative", "history of representations" and "new biographical history" present in the reviewed book and emerging in modern historiography, as well as discussions about the meanings of the concept of "Europeanness" as a characteristic of supra-ethnic identity and about its manifestations at micro and macro levels in the changing and modernizing historical and cultural space of the Russian Empire and Europe in the XIX century.
The Calling of a Man and a Scholar: the World of Sergey Malovichko
Authors: Булыгина Т.А. , Колесникова М.Е. , Крючков И.В. 
Published: November 2021

Cтатья посвящена основным вехам научной и образовательной деятельности известного российского историка Сергея Ивановича Маловичко, приложившего много усилий для развития историографии, новой локальной истории и интеллектуальной истории на Ставрополье, а затем в Москве. В материале отмечается пристальное внимание С.И. Маловичко к использованию научных достижений в учебном процессе. В заключении статьи подчеркивается востребованность научного наследия С.И. Маловичко российскими и зарубежными историками в будущем.
The presented article is devoted to the main phases of the academic and educational work of a famous Russian historian Sergei Ivanovich Malovichko who put a lot of effort into the development of historiographical trends – new local history and intellectual history in the Stavropol Region, and later in Moscow. The article points out S.I. Malovichko's close attention to the application of historical studies to the educational process. In the conclusion of the article, the relevance of the scientific heritage of S.I. Malovichko by Russian and foreign historians in the future is emphasized.
Energy-Aware Clustering and Efficient Cluster Head Selection
Authors: Nezha EL IDRISSI , Abdellah Najid , Hassan El Alami 
Published: November 2021

Abstract
Clustering is an efficient technique to organize network resources efficiently and, in wireless sensor Networks (WSNs) communications it is used to group sensors with similar characteristics managed by a selected sensor called a Cluster Head (CH). Thus, this paper presents a new approach, namely Energy-Aware Clustering and Efficient Cluster Head Selection (EAC-ECHS) to optimize the performances of WSNs in terms of the network lifetime and enhance energy consumption. In EAC-ECHS, the sensor network is divided into an inter grid and fair clustered Grids. Furthermore, for each clustered Grid, the CH selection is based on the residual energy of sensor, distance to neighbors, and distance to the base station. Simulation experiments have been conducted to examine the performance of EAC-ECHS and previous approaches, and the results demonstrate that EAC-ECHS approach achieves the design objectives in terms energy consumption, network lifetime, and packet delivery ratio.
Impact of ionic composition of groundwater on oxidative iron precipitation
Authors: Vries D. , Korevaar M. , de Waal L. , Ahmad A. 
Published: November 2021

Abstract
In the Netherlands, approximately 60% of drinking water is obtained from (generally anaerobic) groundwater. This requires aeration followed by rapid sand ﬁltration (RSF) to remove iron, manganese, arsenic and ammonium. The mechanisms responsible for their removal or the clogging of RSFs and breakthrough of colloidal iron or manganese oxides have not been fully elucidated in previous studies. In this work, factors affecting iron precipitation have been studied in aerated, continuously stirred bench scale jar experiments to simulate the supernatant layer of submerged sand filters. Time series data of filtered iron concentration and precipitate size have been collected in experiments with synthetic groundwater with and without P, Si, HCO3 and Ca at neutral pH. We observed that precipitate growth is not influenced by different HCO3 concentrations but is reduced drastically when natural organic matter (NOM) is present in water and, to lesser extent, Si as well. The addition of P appears to hamper precipitate growth to some extent, but requires more research to fully understand the implications. We also observed that addition of Ca improved the growth of Fe precipitates in the presence of Si and especially NOM. These results have great significance for improving Fe removal efficiency of groundwater treatment plants in The Netherlands and abroad.