bluuebunny/crossref_metadata_2025 huggingface dataset:
60 Jahre OPEC: Revitalisierung dank "OPEC+"?
Authors: Häuser Wolfgang
Published: October 2020

Das in Wien ansässige und immer wieder totgesagte Bündnis kann auch zu Beginn seines siebten Jahrzehntes noch ein gewichtiges Wort bei der globalen Ölpreisbildung mitreden – vor allem aufgrund seiner großen Ölreserven und seiner signifikanten freien Förderkapazitäten. Die starken Preisschwankungen in den letzten Jahrzehnten – früher natürlich auf viel niedrigerem Niveau – spiegeln zugleich aber auch die bizzare Mischung aus Macht und Ohnmacht in der wechselvollen Geschichte des bekanntesten Rohstoffkartells der Welt wider. Angesichts der Markt- und Machtverhältnisse hält die OPEC zusammen mit ihren Kooperationspartnern als OPEC+ auch im siebten Jahrzehnt ihres Bestehens gute Trümpfe in der Hand. Ferner darf natürlich das Mega-Thema „Decarbonisierung der Weltwirtschaft“ nicht vergessen werden: Um den drohenden Klimawandel noch etwas begrenzen zu können, ist eine drastische Reduzierung der CO2-Emissionen und damit gerade des Einsatzes fossiler Energieträger wie Erdöl künftig unausweichlich. Die Vorbereitungen für ein solches post-Öl-Zeitalter stellen hohe Anforderungen an die Kooperationsbereitschaft der OPEC bzw. der OPEC+.
Effect of technological parameters of machining on energy efficiency in face milling of heat-treated oak wood
Authors: Koleda Peter , Barcík Štefan , Nociarová Adriana
Published: October 2020

This paper examines the influence of technological parameters on electrical power in the plane milling of native and modified oak wood. Milling was performed under various cutting conditions, including cutting speeds of 20, 40, and 60 m s-1, feed rates of 6, 10, and 15 m min-1, and cutting edge angles of 15, 20, and 30° on five different samples of oak wood. The wood was native and heat-treated at temperatures of 160, 180, 210, and 240 °C. An analysis of variance and post-hoc Duncan test revealed the influence of the examined parameters on the energy consumption of milling, whereby the cutting speed was the most statistically significant parameter and was directly dependent on the speed of the asynchronous motor and the moment transmission to the miller spindle.
Impacts of lignin contents and yeast extract addition on the interaction between spruce pulps and crude recombinant Paenibacillus endoglucanase
Authors: Ko Chun-Han , Chen Fang-Jing , Liao Wan-Jyung , Shih Tzenge-Lien
Published: October 2020

Crude recombinant Paenibacillus endoglucanase was employed to investigate its ability to gain access into and to degrade spruce pulps having different lignin and pentosan contents. Since yeast extract is commonly present in the simultaneous saccharification and fermentation processes as a nitrogen source, its effect on the accessibility and degradability of crude endoglucanase was examined. Pulps with more lignin contents adsorbed more overall proteins. More protein impurities other than the recombinant Paenibacillus endoglucanase were found to be preferentially adsorbed on the surfaces of pulp with higher lignin contents. The addition of yeast extracts further enhanced the above trends, which might reduce the non-productive binding by pulp lignin. Pulps with more lignin contents were more difficult to be degraded by the crude endoglucanase; the reductions of degree of polymerization (DP) for pulps were more sensitive to the dosage of endoglucanase applied. The presence of yeast extracts increased the DP degradation rate constants, but decreased the release of reducing sugars during hydrolysis for pulp with higher lignin contents.
Plan Curricular y la Formación por Competencias en Estudiantes de Administración - UNMSM
Authors: Rivera León Félix Armando , Alarcón Cerna Jorge Luis
Published: October 2020

Nuestra investigación busca establecer una relación entre dos variables, el Plan Curricular y la Formación por Competencias de estudiante en la Escuela Profesional de Administración de la Facultad de Ciencias Administrativas (FCA) de la Universidad Nacional Mayor de San Marcos (UNMSM), dicha investigación fue realizada durante los años 2017 y 2018. El plan curricular, es el norte de todo proceso educativo en cualquier universidad; por otro lado, el mercado exige que los estudiantes por egresar tengan las suficientes competencias para enfrentarse no solo al mercado laboral, sino a la vida misma. Consideramos a la universidad como una escuela donde los estudiantes adquieren competencias las mismas que deberán ser progresivas conforme avanzan los módulos por ciclo. La presente investigación está tipificada como básica, primaria, descriptiva, correlacional, cuantitativa, bivariable y transaccional. La muestra que se obtuvo es de 80 estudiantes, utilizando un software estadístico se llegó a la conclusión de que existe una relación moderada entre el plan curricular y la formación por competencias.
La Fidelización del Cliente y Retención del Cliente: Tendencia que se Exige Hoy en Día
Authors: Pierrend Hernández Sara Delfina Rosa
Published: October 2020

El funcionamiento estable de la empresa depende directamente de su poder en el mercado y para ello es importante tener un alto grado de fidelización de los clientes y en caso estos no estén satisfechos con lo adquirido es importante que la empresa tenga la capacidad de revertirlo es decir retenerlo. Sin embargo, no existe una clara delimitación de ambos conceptos (fidelización y retención del cliente) y ese es el principal objetivo del artículo, pues es importante que las empresas tengan una idea clara sobre el significado de estas, con el fin que se apliquen políticas efectivas para que los clientes generen opiniones positivas sobre la empresa y lleguen a influenciar en la decisión de compra de nuevos individuos que no tienen claro a qué empresa acudir para satisfacer su necesidad y transmitir el sentimiento de seguridad que si no se llega a cumplir con las expectativas la empresa está dispuesta a corregir dicha situación.
The Linguistic Image of the World on the Example of German and Polish Personal Insults with an Animalistic Component
Authors: Szczęk Joanna
Published: October 2020

The constant presence of animals in human life influences language. It is not only a rich animal and zoonotic lexis but also a way of perceiving animals, the attributes assigned to them and the behaviour observed. Through the prism of language, one can show the linguistic image of the world of a selected fragment of reality. The subject matter of this study is the linguistic image of the world based on personal insults with an animalistic component in German and Polish. The work is confrontational. The research corpus is constructed of personal zoonotic names collected from the dictionaries of both languages. The aim is to present the linguistic picture of the world based on the collected units and indicate, on this basis, the similarities and differences in the mentioned scope. Based on the analysis of the corpus, the appropriate conclusions are drawn about the perception of animals in both language cultures. Due to similar experiences in contact with animals, one can expect mainly similarities in this regard.
PERBEDAAN KEMAMPUAN KOMUNIKASI MATEMATIS SISWA SEKOLAH DASAR MENGGUNAKAN MODEL PROJECT BASED LEARNING DAN MODEL PROJECT BASED LEARNING DENGAN TEKNIK MIND MAP
Authors: Farokhah Laely , Herman Tatang , Jupri Al
Published: October 2020

Penelitian ini dilatarbelakangi oleh hasil studi pendahuluan yang menunjukkan bahwa kemampuan komunikasi matematis siswa Sekolah Dasar masih rendah. Siswa masih mengalami kesulitan dalam mengkomunikasikan ide matematis. Penelitian ini bertujuan untuk mendeskripsikan apakah terdapat perbedaan perolehan kemampuan komunikasi matematis siswa yang memperoleh pembelajaran model project based learning dengan siswa yang memperoleh pembelajaran model project based learning dengan teknik mind map. Penelitian ini merupakan penelitian kuasi eksperimen dengan desain non-equivalent group design. Subjek penelitian terdiri dari 63 siswa kelas IV (Empat) salah satu Sekolah Dasar di Kota Bandung. Pengumpulan data dilakukan menggunakan instrumen tes kemampuan komunikasi matematis. Adapun analisis data menggunakan statistik non parametrik. Hasil penelitian menunjukkan bahwa terdapat perbedaan perolehan kemampuan komunikasi matematis siswa yang memperoleh pembelajaran model project based learning dengan siswa yang memperoleh pembelajaran model project based learning dengan teknik mind map.
ANALISIS KESALAHAN SISWA DALAM MENYELESAIKAN SOAL PEMECAHAN MASALAH PADA MATERI POKOK BANGUN RUANG SISI DATAR
Authors: Atiqoh Khamida Siti Nur
Published: October 2020

Tujuan penelitian ini adalah untuk menganalisis apa saja kesalahan siswa dalam mengerjakan soal permecahan masalah materi pokok bangun ruang sisi datar, serta apa saja yang menyebabkan kesalahan siswa dalam mengerjakan soal pemecahan masalah materi pokok bangun ruang sisi datar. Pengambilan subyek penelitian yaitu dari 38 siswa kelas VIII-B yang mengikuti tes, hasil tes siswa diurutkan berdasarkan dari nilai yang terbesar ke yang terkecil kemudian dibagi menjadi tiga kelompok. Subyek penelitian terdiri dari 6 siswa yaitu: 2 siswa dari kelompok atas 2 siswa dari kelompok sedang, dan 2 siswa kelompok bawah yang masing-masing memiliki kesalahan terbanyak dari kelompoknya yang selanjutnya akan dilakukan wawancara intensif. Hasil penelitian diperoleh kesalahan yang dilakukan siswa yaitu kesalahan konsep (KK), kesalahan menggunakan data (KD), kesalahan interpretasi bahasa (KB), kesalahan teknis (KT), dan kesalahan penarikan kesimpulan (KS). Adapun penyebab kesalahan tersebut adalah siswa belum mampu mengaplikasikan materi bangun ruang sisi datar pada soal pemecahan masalah, kurang teliti dalam melakukan perhitungan, tidak memeriksa hasil perhitungannya kembali, kesalahan dalam imajinasi ruang, belum mampu menggunakan ide-ide geometri dalam menyelesaikan soal, kurang memahami berlakunya operasi pada aljabar, kurang teliti dalam memasukkan data ke variabel, dan kurangnya keterampilan dalam merencanakan penyelesaian. Berdasarkan penelitian tersebut maka disarankan kepada guru-guru yang mengampu kelas VIII SMP hendaknya menjelaskan langkah-langkah dalam mengerjakan soal pemecahan masalah serta menekankan pada langkah memahami masalah, merencanakan penyelesaian dan memeriksa kembali agar kesalahan-kesalahan siswa dalam mengerjakan soal pemecahan masalah materi pokok bangun ruang sisi datar tidak terulang lagi.
PENERAPAN MODEL SSCS PROBLEM SOLVING DENGAN METODE HYPNOTEACHING UNTUK MENINGKATKAN KEMAMPUAN BERPIKIR KRITIS MATEMATIS SISWA
Authors: Dimyati Ahmad
Published: October 2020

The research was based on concerns about the development of mathematical critical thinking and mathematical communication ability. The purpose of this study was review and compare the differences of enhancing mathematical critical thinking ability between junior high school students who acquire Model of Search, Solve and Share (SSCS) through hypnoteaching method and those who acquire the conventional learning. This study was a quasi-experimental research with non-equivalent control group design consists of classroom experiments which obtain Model of Search, Solve and Share (SSCS) through hypnoteaching method and control class which obtain conventional learning. The population of this study is junior high school students in Tangerang, where the samples are the grade 8th students in one of the state junior high school in Tangerang. Instruments used to collect data in this research consists of mathematical critical thinking test instruments, student’s attitude scale, and observation sheets. The data obtained is analyzed using the mean difference test, which are the t-test, Mann-Whitney, and Rank-Spearman test. The results showed that the enhancement student’s mathematical critical thinking ability who gotten model os Search, Solve, Create, and Share (SSCS) through hypnoteaching method is better than who gotten conventional learning.
ANALISIS HASIL BELAJAR DAN MASA STUDI MAHASISWA CALON GURU MATEMATIKA
Authors: Ibrahim Ibrahim
Published: October 2020

The main objective of this research is to analyze the correlation between learning outcomes in the first year, the final results of study and the period of study of students. The research method used is quantitative (descriptive-associative) method. This research is an ex-post research. The sample of this study was 317 students of the Mathematics Education Study Program, Faculty of Science and Technology from 2006 to 2010. Data analysis techniques used in this study were the average difference test and the correlation test. Research data were collected using documentation. Learning outcomes data in the first year and final study data using IPK data, and study period data using the number of semesters taken by students. This study concludes that the learning outcomes in the first year and the final results of the study of mathematics teacher candidates at UIN Sunan Kalijaga are  more than 3.00, but the study period is more than 8 semesters. In addition, this study also concluded that there was a positive correlation between learning outcomes in the first year and the final results of student studies, but there was a negative correlation between learning outcomes in the first year and the period of study of students and between the final results of study and study period of students.
CONCEPT-BASED LEARNING DAN KEMAMPUAN BERFIKIR KRITIS MATEMATIS
Authors: Fatra Maifalinda , Rizki A , Maryati Tita Khalis
Published: October 2020

Mathematical Critical thinking is one of  mathematical abilities that must be obtained by students. Critical thinking is one of the high order thinking processes that can make concepts in student knowledge.  Students with critical thinking in mathematics learning mostly do rational activities such as interpreting information based on a particular theoretical framework, linking theory with practice, making claims and justifying it, utilizing data in support of argumentation, making relations or relationships between various ideas, asking questions, evaluating knowledge, predict, describe something, analyze, synthesize, and categorize. This study aims to analyze the effect of the Concept-Based Learning Model on the critical thingking mathematical abilities.The purpose of this research is to analyze the effect of Concept-Based Learning Model toward mathematics critical thinking ability. The method used in this research is quasi experiment by Randomize Control Group Post Test Only Design with cluster random sampling technique. Indicators of mathematics critical thinking skills measured in this study include providing simple explanations, building basic skills, concluding, making more explanations, and deciding an action. The results showed that the mathematics critical thinking ability of students in the experimental class for the five indicators that being analyze was higher than the ability of students in the control class. A fairly high difference in the indicator showed in give a simple explanation and concluding. and it means that the application of Concept-Based Learning Model significantly influences the  abilities  of students' mathematics critical thinking.
Determinants of Functional Capacity and Quality of Life After Implantation of a Durable Left Ventricular Assist Device
Authors: Mirza Kiran K , Gustafsson Finn
Published: October 2020

Continuous-flow left ventricular assist devices (LVAD) are increasingly used as destination therapy in patients with end-stage heart failure and, with recent improvements in pump design, adverse event rates are decreasing. Implanted patients experience improved survival, quality of life (QoL) and functional capacity (FC). However, improvement in FC and QoL after implantation is not unequivocal, and this has implications for patient selection and preimplantation discussions with patients and relatives. This article identifies preimplantation predictors of lack of improvement in FC and QoL after continuous-flow LVAD implantation and discusses potential mechanisms, allowing for the identification of potential factors that can be modified. In particular, the pathophysiology behind insufficient improvement in peak oxygen uptake is discussed. Data are included from 40 studies, resulting in analysis of >700 exercise tests. Mean peak oxygen uptake was 13.4 ml/kg/min (equivalent to 48% of predicted value; 259 days after implantation, range 31–1,017 days) and mean 6-minute walk test distance was 370 m (182 days after implantation, range 43–543 days). Finally, the interplay between improvement in FC and QoL is discussed.
A brief summary of the Scientific Council for soil science of General biology department of the National academy of sciences of Ukraine in 2014
Authors: Gorban V. A.
Published: October 2020

The main results of the work of the Scientific Council for Soil Science of General Biology Department of the National Academy of Sciences of Ukraine in 2014 are presented. The basic directions of the scientific activities of all committees and sub-committees of the Scientific Council for the reporting period are given.
Hydrological constants and water regime of a Calcic Chernozems in the zone of true steppe of Ukraine
Authors: Kotovych O. V. , Recio Espejo J. M. , Yakovenko V. M. , Dubina A. O. , Karas O. G. , Travleyev L. P.
Published: October 2020

The characteristics of important water-physical properties and water-balance monitoring results for Calcic Chernozems located in the zone of true steppe were provided. The differences between soil-hydrological constants in carbonated loess-like loam and organogenic horizons were established. The results of water-balance monitoring showed that the moisture has uneven distribution along the soil profile, and most of the active moisture (more than 90%) was accumulated within the range of depths from 0 to 150 cm. During the entire calendar year, the soil is characterized by a lack of moisture available to plants. There are no periods free from water deficit.
Evaluación de genotipos de Canavalia brasiliensis Mart. ex Benth. para producción de semilla en el Caribe colombiano
Authors: Burbano-Erazo Esteban , Brochero-Aldana Guillermo Alberto , Rodríguez-Jiménez Dalia Milena , Mojica Rodríguez José Edwin , Lombo-Ortiz Darwin Fabian
Published: October 2020

La capacidad de producir semilla, en leguminosas forrajeras facilita la adopción y conservación de estas especies por parte de los productores. El objetivo de este trabajo fue evaluar genotipos de Canavalia brasilienses Mart. ex Benth. para producción de semilla. El trabajo de investigación se desarrolló en el Centro de investigación Motilonia, de la Corporación colombiana de investigación agropecuaria- AGROSAVIA. Se evaluaron 4 accesiones de C. brasiliensis (17009, 17462, 21461 y 21825), provenientes del Centro Internacional de Agricultura Tropical- CIAT. Se establecieron en parcelas de 3,0 x 3,0 m, con distancia de 0,5 x 0,5 m entre plantas y surcos. Se analizó el efecto estadístico de las distintas accesiones de C. brasiliensis sobre el número de vainas por muestreo, área 0,25 m2, longitud de vaina, diámetro de vaina, semillas por vaina, peso de 100 semillas, diámetro de semilla y rendimiento, mediante un análisis ANOVA de una vía, cumpliendo con un diseño BCA. Las accesiones de C. brasiliensis mostraron efecto estadístico significativo sobre el número de vainas por aforo, diámetro de vaina, diámetro de semilla, rendimiento y peso de 100 semillas. El mejor resultado en cuanto rendimiento fue para las accesiones 17462, 21825 y 17009 con valores de 745,6, 584,9 y 509,9 kg/ha, respectivamente, indicando las potencialidades de C. brasiliensis en la producción de semillas bajo condiciones del Caribe seco colombiano. Las accesiones 17462, 21825 y 17009 de C. brasiliensis presentaron una buena producción de semilla en condiciones del Caribe seco colombiano, lo cual constituye una caracteristica importante para la selección de genotipos promisorios para alimentación animal.
Natación deportiva y salud mental: ¿hay una relación?
Authors: Geamonond Nunes Leonardo
Published: October 2020

La natación es uno de los deportes individuales más practicados a nivel mundial; los beneficios que brinda en la salud de la población incluyen un eje biopsicosocial. La interacción del individuo con el medio acuático hace posible experimentar habilidades en un medio totalmente diferente al que vive. Sin embargo, existen pocos aportes de la literatura científica cuando se refiere a la práctica de la natación y los benefícios de este deporte a la salud mental. Faltan estudios que aborden los beneficios de la práctica, intensidades de entrenamiento y volúmenes ideales, métodos utilizados y frecuencia semanal que correspondan a las respuestas psicofisiológicas desencadenadas en niños, adultos y adultos mayores.
A computational implementation of the mixed-VEM method for the brinkman problem in 2D
Authors: Sequeira Filander A. , Guillén-Oviedo Helen
Published: October 2020

En este artículo se describen algunos aspectos específicos sobre una implementación computacional para la formulación mixta de elementos virtuales (mixed-VEM, por sus siglas en inglés) del problema lineal de Brinkman en dos dimensiones, con condiciones de frontera de Dirichlet no homogéneas. La formulación empleada fue originalmente propuesta y analizada en CÁCERES, E., GATICA, G.N. AND SEQUEIRA, F.A., A mixed virtual element method for the Brinkman problem. Math. Models Methods Appl. Sci. 27 (2017), no. 4, 707–743. La implementación planteada aquí considera cualquier grado polinomial k >= 0 de manera natural al construir diversas matrices locales de bajo tamaño. Además, se propone un algoritmo para el ensamblaje del sistema lineal global asociado, que garantiza la continuidad de la componente normal en la solución discreta.
Industrial applications of superhydrophobic coatings: Challenges and prospects
Authors: ERBIL Husnu Yıldırım
Published: October 2020

The use of the superhydrophobic coatings and materials in industry is not satisfactory after the intensive activity in research laboratories in the last two decades. We discussed the reasons for this adverse situation under several topics in this review article. The most important issues are the insufficient mechanical resistance and inevitable contamination of the SH surfaces under outdoor conditions, resulting in short useful life-time. The fabrication of a SH surface requires a rough structure with tiny textures on it and this frail framework has a poor mechanical resistance. The topics of superfluous production of small scale and expensive SH surfaces, the difficulty to obtain transparent and also self-healing SH surfaces, the inefficient anti-icing applications of the SH coatings are also discussed.
Standing in the Breach: Conflict Transformation and the Practice of Preaching
Authors: Moiso Aimee C.
Published: October 2020

In an era of social and political polarization, the question of how to preach amid divided communities looms large. The field of conflict transformation, which emerged as a corrective to earlier conflict resolution and management models, offers new insight into how conflict might serve as a constructive catalyst for change. Conflict transformation provides perspectives and orientations to conflict that are useful to homiletics—but which also challenge assumptions about conflict that are present in the church and in the larger society. This essay introduces secular and Christian approaches to conflict transformation and analyzes some of their implications for preaching, including the claims that conflict is not sinful and could be a way in which God is acting in the world, that conflict transformation requires broad participation and not top-down solutions, and that restoration of right relationships can be more important to conflict transformation than coming to agreement.
Karen Bray, Grave Attending: A Political Theology of the Unredeemed
Authors: Schnasa Jacobsen David
Published: October 2020

Please click the PDF button to access the review.
James Henry Harris, Beyond the Tyranny of the Text: Preaching in Front of the Bible to Create a New World
Authors: Donahue-Martens Scott
Published: October 2020

Please click the PDF button to access the review.
Kathleen Black, et al., Rhythms of Religious Ritual: The Yearly Cycle of Jews, Christians, and Muslims
Authors: Liu Gerald C.
Published: October 2020

Please click the PDF button to access the review.
Cláudio Carvalhaes, What’s Worship Got to Do with It? Interpreting Life Liturgically
Authors: Wymer Andrew
Published: October 2020

Please click the PDF button to access the review.
BRICS: potencialidades de cooperação e papel na governança global de saúde no contexto da pandemia
Authors: Raphael Padula , De Carvalho Felipe
Published: October 2020

O argumento central do artigo é que os países do BRICS vinham consolidando e ampliando sua cooperação na área da saúde, na qual têm importante complementaridades, e que, ao atuarem coordenadamente, contribuem para instalar novas dinâmicas de poder no campo da saúde internacional que desafiam Interesses dos Estados e suas Empresas Transnacionais que se concentram neste mercado, especialmente no cenário de pandemia global. O setor saúde é abordado de forma ampla, mas com foco especial na indústria farmacêutica, setor considerado político-estratégico por ser fundamental para a estabilidade política, desenvolvimento socioeconômico e segurança nacional. O artigo apresenta considerações sobre a estratégia estadunidense de segurança nacional no que se refere à saúde. Em seguida trata das vulnerabilidades e potencialidades de cooperação em saúde dos países do BRICS em termos de mercado e acesso universal à saúde, acesso a tecnologias e combate a doenças negligenciadas, da relação do bloco com governança global em saúde, e finalmente do contexto pandêmico e da geopolítica da vacina. O texto se apoia em informações e dados de instituições especializadas em saúde, documentos de governos ou do BRICS, e bibliografia de autores especialistas em saúde global.
Mechanical and deformation characteristics of composite assembled supporting structure
Authors: Guo Chengchao , Ye Juntao , Zhao Chenyang , Wang Fuming
Published: October 2020

The composite assembled recyclable supporting structure is a type of newly developed supporting structure; it combines a steel skeleton supporting structure with polymer waterproof technology. Based on the Niukouyu excavation project in Zhengzhou, China, a three-dimensional finite-element model is established to simulate the excavation process using this type of supporting structure. The effects of important design factors (foundation pit depth, length-to-width ratio and steel beam interval) on lateral displacements and bending moments of the supporting pile in the worst scenario are analysed. The results show that the composite assembled recyclable supporting structure can effectively control the deformation of the excavation. The supporting pile has an inward deformation mode. Both maximum lateral displacement and bending moment occur at about 0.8H e (where H e is the foundation pit depth) below the ground surface. The maximum lateral displacement of the supporting pile ranges from 0.023% H e to 0.12% H e. Furthermore, a global sensitivity analysis is also conducted to distinguish the relative importance of uncertain soil parameters (elastic stiffness and shear strength) on the system behaviour in this Niukouyu project. It is found that the elastic modulus of soil dominates the supporting structure responses, while the soil shear strength plays an insignificant role in determining the system behaviour due to negligible plastic deformations.
Kafa İçi Basınç Değişikliklerine Bağlı Olarak Gelişen Baş Ağrısında İki Farklı Prezentasyon
Authors: AYDIN Hilal , ORMAN Ayşen , KEMER Özlem
Published: October 2020

Baş ağrısı çocuk ve adölosanlarda sık görülen yakınmalardan biridir. Beyin parankimi, BOS ve kan hacimi arasındaki denge bozuklukları da baş ağrısının yanı sıra farklı nörolojik yakınmalar ile klinik bulgu verebilir. Bu yazımızda; intrakraniyal yapıdaki dengenin bozulması ile karakterize iki farklı olguyu sunmak istedik
The Anti-capitalist Commons
Authors: Papadimitropoulos Vangelis
Published: October 2020

Chapter four critically reviews the anti-capitalist literature on the commons, comprising of various interpretations of Marx’s work, among others. The first section investigates the relation of the political and the common in a broad spectrum of continental political philosophy, including ‘post-hegemony’ notably Ernesto Laclau and Chantal Mouffe and the autonomous Marxist tradition (Michael Hardt and Toni Negri) in the context of Alexandros Kioupkiolis’s critique who points to the crowding out of the self-instituting power of the people in several Marxist and post-Marxist interpretations of the common. The second section focuses on the work of Pierre Dardot and Christian Laval who have reintroduced the self-instituting power of the people in political discourse as the essential concept of ‘the common’. The third section illustrates a more concrete version of the common, articulated in the Katharine Gibson and Julie Graham’s work, who sketch out the philosophical and empirical preconditions of a community economy. The fourth section deals with the concept of the common as the self-instituting power of the people to introduce variants of autonomous Marxism, ranging from post-capitalism to anti-capitalism. Lastly, the fifth section examines the conception of the common in the context of autonomous and classical Marxist views . Authors discussed include Nick Dyer-Witheford, Massimo De Angelis, George Caffentzis, Silvia Federici, Slavoj Žižek, Jodi Dean, David Harvey, Paul Mason and Christian Fuchs. The author concludes that a set of policies could be integrated into a holistic, post-hegemonic strategy for a post-capitalist, com­mons-orientated transition drawing also on some reformist perspectives.
Assessment of applying VLF geophysical method to determine the peat deposit thickness
Authors: Yakonovskaya T. B. , Zhigulskaya A. I. , Yakonovsky P. A.
Published: October 2020

Peat deposits accumulate large reserves of carbon and play an important role in formation of global climate, biosphere, and hydrological conditions. High degree of knowledge of peat reserves is one of the prerequisites for scientifically based and economically viable wetland management. For economically efficient commercial activity, an enterprise developing a peat deposit must be confident in the availability of sufficient and high quality commercial peat reserves. Therefore, the topic of studying the thickness of peat deposits is quite relevant. The paper analyzes the experience of using the geophysical method called VLF ("very low frequency") to study the thickness of peat deposits. The method consisted of using a VLF receiver to measure the properties of VLF emitted by the peat deposit and the underlying mineral ground. The study was carried out at the Beloe Lake peat deposit in the Tukayevsky district of Tatarstan, at three peat areas of different depths: deep-lying (over 3 m), intermediate (1.5 – 3 m), and shallow (up to 1.5 m). The depth was confirmed by direct measurements in the wells. Low-frequency (VLF) measurements were carried out along the geophysical paths at each area of the peat deposit. The data were processed using the NAMEMD (Noise Empirical Decomposition) method and converted to resistivity and depth values using the specialized software. The study showed that the resistivity differs significantly between the areas of deep-lying and shallow peat. The resistivity varies depending on the peat thickness and the thickness of the buried wood horizons. In the horizons of deep-lying peat, the resistivity is strongly influenced by the degree of peat decomposition, its natural density and moisture. The presence of peaks and their height on the data interpretation plots characterizes the number and thickness of the horizons of buried wood in the peat deposit. With increasing depth of peat occurrence, the resistivity increases significantly. However, in the shallow areas, it does not show differences, being characteristic for the deep-lying peat area. This proves that the VLF method works correctly in peat layers and is capable to indicate the peat thickness, the number and thickness of the buried wood horizons.
Symptoms of postpartum anxiety and depression among women in Canada: findings from a national cross-sectional survey
Authors: Gheorghe Mihaela , Varin Mélanie , Wong Suzy L. , Baker Melissa , Grywacheski Vera , Orpana Heather
Published: October 2020

Objective

This study presents national estimates on symptoms consistent with postpartum anxiety (PPA) and postpartum depression (PPD) and the association between these conditions and possible risk and protective factors in women who gave birth in Canada.

Methods

Data were collected through the Survey on Maternal Health, a cross-sectional survey administered in Canada’s ten provinces between November 2018 and February 2019 among women who gave birth between January 1 and June 30, 2018. A total of 6558 respondents were included. Weighted prevalence estimates were calculated, and logistic regression was used to model the relationship between symptoms consistent with PPA, PPD, and potential risk factors.

Results

Overall, 13.8% of women had symptoms consistent with PPA, while the prevalence of having symptoms consistent with PPD was 17.9%. Results of the logistic regression models indicated that women who had a history of depression were 3.4 times (95% CI 2.7–4.2) more likely to experience symptoms consistent with PPA and 2.6 times more likely to experience symptoms consistent with PPD (95% CI 2.2–3.2) compared with those who did not. Women who reported good, fair, or poor physical health were 2.4 times more likely to experience symptoms consistent with PPD (95% CI 2.0–2.9) and 2.0 times more likely to experience symptoms consistent with PPA (95% CI 1.7–2.4) compared with those who reported very good or excellent health. Maternal marital status, other postpartum maternal support, and sense of community belonging were also significant.

Conclusion

This study highlights that a history of depression and good, fair, or poor physical health are associated with an increased odds of symptoms consistent with PPA and PPD, while other maternal support and sense of community belonging are associated with a decreased odds of these conditions.
Affirmative Wellness Counseling With Older LGBTQ+ Adults
Authors: Chaney Michael P. , Whitman Joy S.
Published: October 2020

This article explored the psychosocial risk factors and characteristics that negatively influence wellness among older (65+ years) lesbian, gay, bisexual, transgender, and other nonheterosexual and/or gender-expansive (LGBTQ+) adults. LGBTQ+ affirmative wellness counseling techniques and interventions for counselors working with this population are presented using eight dimensions of wellness as a framework. Affirmative counseling approaches to enhance the emotional, environmental, financial, intellectual, occupational, physical, social, and spiritual dimensions of wellness are examined. Clinical considerations and further research are discussed.
The Role of Psychedelics and Counseling in Mental Health Treatment
Authors: Curtis Russ , Roberts Lisen , Graves Elizabeth , Rainey Heather Thompson , Wynn David , Krantz Daphne , Wieloch Verena
Published: October 2020

Psychedelics (i.e., ketamine, methylenedioxymethamphetamine, psilocybin) have been effectively used globally for centuries to treat mental health and addiction issues. However, in the 1950s–1970s, a number of factors, including misuse, abuse, and poorly conceptualized and conducted clinical trials, caused the Federal Drug Administration to classify most of the psychedelic substances as having no medical value. Now, however, recent research is indicating that psychedelic-assisted therapy can significantly reduce depression and suicidal ideation in treatment-resistant clients, and it may be efficacious in treating other mental health and addiction issues as well. Researchers have also identified the critical therapeutic components that ensure effective psychedelic-assisted therapy, not least the need for mental health counseling before, during, and after treatment. The purpose of this manuscript is to share the latest psychedelic therapy research and to discuss how mental health counselors can contribute to this reemerging therapeutic trend.
Numerical simulation of strain within the constructions for temporary hemiepiphyseodesis in patients with systemic skeletal dysplasias
Authors: Kenis Vladimir M. , Morenko E. S , Korshunov A. V , Kleimanov R. V
Published: October 2020

Introduction. Guided growth (temporary hemiepiphyseodesis) methods for the correction of axial deformities at the knee joint level in children are used mainly in patients with idiopathic deformities. In patients with systemic skeletal dysplasias the use of these techniques does not take into account the peculiarities of the pathological process. Purpose of study: to evaluate with radiographs the incidence of incomplete plate-bone contact at temporary hemiepiphyseodesis; to assess tensely deforming condition of metal implants using numerical simulation of strain in patients with systemic skeletal dysplasias for the prognosis of their potential failure. Patients and methods. Postoperative radiographs were analyzed for 58 children with systemic skeletal dysplasias after temporary hemiepiphyseodesis (107 extremities, 188 plates; main group) and 50 patients with the deformities of other etiology (control group). Plate-metaphysis contact was considered to be incomplete if it exceeded 2 mm. To determine the plate strains and displacement during the process of bone growth the numerical simulation using COSMOL Multiphusics Software was performed. Results. Incomplete plate-bone contact was observed in 41 (22%) out of 188 constructions. Mean contact deficit made up 4.1±1.3 mm. In control group incomplete plate- bone contact (over 2 mm) was observed only in 3 (4.5%) cases (p
History of meniscal repair techniques development (foreign literature review)
Authors: Ryazantsev Mikhail S. , Magnitskaya N. E , Il’in D. O , Afanas’ev A. P , Frolov A. V , Korolyov A. V
Published: October 2020

The analysis of the evolution of meniscal repair techniques starting of the arthrotomic interventions to procedures under arthroscopic control is presented. Long-term results as well as the surgical techniques are discussed.
Lumbosacral pain in athletes and ballet dancers: spondylolysis and spondylolisthesis. Conservative treatment
Authors: Mironov S. P. , Cykunov M. B. , Burmakova G. M. , Andreev S. V.
Published: October 2020

The aim of the study was to develop an algorithm for conservative treatment of lumbosacral pain syndrome (PCBS) caused by spondylolysis in athletes and ballet dancers.

Materials and methods. The study included 212 patients athletes and ballet dancers with PCBS caused by spondylolysis (171 people) and grade III spondylolisthesis (41 people) of the lumbar vertebrae. Clinical, neurological, and X-ray studies, ultrasonography, computed tomography, scintigraphy, functional testing, as well as markers of bone resorption (calcium in urine) and bone formation (alkaline phosphatase) were performed.

Results. All patients underwent conservative treatment: functional therapy, physiotherapy, ozone and drug therapy. Functional rehabilitation treatment included three stages: 1 relief of pain; 2 restoration of support ability and stability of the spine; 3 restoration of special motor skills. As a result of treatment, the functional parameters of the muscles stabilizing the spine improved (tone, contractile activity, bioelectric parameters), and the muscle imbalance was eliminated. After treatment, in radiographs, in most cases, a defect was observed in the arch of the vertebra, but it was much smaller in width and did not affect professional performance. Complete restoration of the bone structure in the area of the arc defect was observed only with acute pathology, complete cessation of sports load and a long (1 year or more) sparing regimen (9 people). Excellent and good results were obtained in 171 (80.7%) patients, satisfactory in 36 (16.9%) patients. Five (2.4%) patients with spondylolisthesis were not able to continue their professional activities, the result of conservative treatment was regarded as unsatisfactory. Three of them were subsequently underwent surgical treatment.

Conclusion. The development of an individual program of conservative rehabilitation treatment for athletes and ballet dancers with spondylolysis and grade I and II spondylolisthesis, adequate and timely use of rehabilitation features lead to eliminating muscle imbalance and strengthening muscle corset. This, in turn, will contribute to the relief of pain, restoration of professional performance, prevention of progression of the area of bone reconstruction of the vertebral arches and spondylolisthesis
Levobupivacaine in spinal anesthesia for primary knee and hip arthroplasty
Authors: Ukolov K. Yu. , Ayzenberg V. L. , Kapirina M. V. , Mikitina M. E.
Published: October 2020

Introduction. Spinal anesthesia is widely used in major orthopedic. Primary hip and knee arthroplasty are major surgical procedures associated with significant potential morbidity in elderly patients. This increases requirement to surgical and anesthetic procedures. Some studies provide evidence that levobupivacaine when used as an alternative to bupivacaine in spinal anesthesia is less cardiotoxic and neurotoxic.

Aim: To compare the efficacy and safety of these two spinal anaesthetic agents in elderly patients undergoing primary hip or knee replacement.

Patients and methods. The study included 90 patients performed arthroplasty with spinal anesthesia. I group patients received spinal anesthesia bupivacaine 0,5%, II group patients received intrathecal levobupicavaine 0.5%. Group I (n=60), 22 (37%) underwent primary hip arthroplasty, and 38 (63%) patients that underwent primary knee arthroplasty with mean age (65,4 + 6,5). Group II (n=30), 18 (60%) patients that underwent primary total hip arthroplasty and 12 (40%) patients that underwent primary knee arthroplasty with mean age (65,5 + 8,1). Anesthesia algorithm did not differ for both groups.

Results. Vital parameters and adverse effects in relation to spinal anesthesia were observed. Decrease of heart rate was more significant in group II. Blood pressure parameters were comparable to both groups though, 10% of Group I patients received infusion of norepinephrine for treatment of hypotension. The two groups were comparable with glucose and lactate variations as well as the duration of analgesia and postoperative nausea and vomiting. No postoperative delirium was noted in both groups.

Conclusion. Spinal anesthesia with levobupivacaine is more safe for elderly patients undergoing knee and hip arthroplasty.
Arthroscopically-assisted knee joint arthrodesis by custom-made intramedullary locking nail with simultaneous femur deformity correction (case report)
Authors: Korchagin K. L. , Chugaev D. V. , Solomin L. N. , Sorokin E. P. , Lasunskiy S. A.
Published: October 2020

Post-traumatic intra- and extra-articular deformities of the bones forming the knee joint, multiple previous surgeries, ﬁbrous ankylosis of the knee joint is unfavorable background for performing total knee joint arthroplasty. In case of refusal to perform knee arthroplasty, the gold standard is knee arthrodesis. Standard techniques used in performing this operation are traumatic and associated with a high volume of intraoperative blood loss. Using such a surgical option as arthroscopically-assisted arthrodesis can reduce the level of surgical invasive- ness and minimize blood loss, while allowing you to perform this operation no less eﬀectively than using traditional approaches. As a clinical example, we have presented arthroscopically-assisted arthrodesis of the knee joint in a patient with posttraumatic deformity of the femur and ﬁbrous ankylosis of the knee joint with a good medium-term functional result.
Evaluation of safety and efficacy of Hylan G-F 20 (Synvisc-One®) in patients with knee osteoarthritis in clinical practice
Authors: Kuropatkin Gennadiy V. , Ahtyamov Ildar F. , Stanislav Marina L. , Kushnir Vladimir A. , Belenkiy Igor G. , Kopenkin Sergey S. , Tamazyan Vartan O. , Vezikova Natalya N. , Klyuchevskiy Vasiliy V.
Published: October 2020

Combined therapy of osteoarthritis (OA) includes intra-articular injections of hyaluronic acid. A prospective observational multicenter noncomparative study was conducted in compliance with routine clinical practice in patients with knee OA IIII stages in order to assess 1-year long-term safety and efficacy of Hylan G-F 20 (Synvisc-One, one injection of 6 mL). Patients came for observation at 3, 6, and 12 months after intra-articular injection of Hylan G-F 20. The primary objective of the study was evaluation of pain severity while walking and rest by using the WOMAC VA3.1 (Western Ontario and McMaster Universities Osteoarthritis Index) scale after 26 and 52 weeks compared to baseline. Quality of life was measured by EQ-5D (EuroQuality of Lifefive dimensions); patients general condition was measured by PTGA (Patient Global Assessment) and COGA (Clinical Observer Global Assessment). Results of the study were based on data of 121 patients (79.51% women, 21.49% men), mean age 62.97 12.47 years. Positive clinical response was observed in 12 months (52 weeks) after Hylan GF-20 administration: pain severity versus baseline was decreased by 48.92% (p 0.001) as per WOMAC A, stiffness in the joints versus baseline by 49.72% (p 0.001) as per WOMAC B, difficulties in the daily life versus baseline by 41.54% (p 0.001) as per WOMAC C. Seven adverse events were detected in five patients (4%), and one serious adverse event (cardiovascular abnormalities) was noticed during the entire study that was unrelated to the study drug. The extent of clinical response did not correlate with the stage of osteoarthritis. The quality of life was improved by 35.28% (p 0.001) according to the questionnaire EQ-5D. The general condition of the patients was improved by 37.50% (p 0.001) as per COGA and 42,86% (p 0.001) as per PTGA. No patients were discontinued the study due to adverse event or any other reasons. Intra-articular injections of Hylan G-F 20 6 mL were associated with acceptable safety and efficacy, and the therapeutic effect was observed up to 52 weeks.
Conservative correction of the transverse arch of the foot in patients with flat foot
Authors: Bardyugov Petr S. , Parshikov Mihail V.
Published: October 2020

Objective. The aim of the study is to analyze the design features of orthopedic appliances used to preserve or restore the transverse arch of the foot and determine the most promising product.

Materials and methods. Orthopedic products that were used to correct forefoot flattening in 350 patients aged 1782 years were analyzed. Of the total number of patients, 321 were women, and only 29 were men; 252 people were diagnosed with transverse flatfoot of stages 12, while maintaining high elasticity of the arches, and in 34 cases, there was a pronounced rigidity. Flatness was combined with valgus deformity of one finger in the range of 20300 in 218 patients. The pathological process reached stages 34, and the degree of elasticity of the arches was low in 98 patients. The products were used after various operations in 86 patients, while they were used as a conservative correction in the rest.

Results. All orthopedic appliances were divided into groups according to several criteria (design features and functional perspectives). An analysis of the strengths and weaknesses of the first three allowed us to identify the fourth group, which included products that provided the ability to adjust the size of the forefoot and at the same time restored the transverse arch. They were successfully used both in the rehabilitation period, after various reconstructive operations, and with conservative treatment.

Conclusion. One of the main goals in the treatment of this category of patients is restoration of the transverse arch of the foot during flattening (surgically, conservatively, or in combination), should be used according to indications and, if necessary, be combined with other corrective elements. All this will allow to achieve both therapeutic and cosmetic results and ultimately improve their quality of life.