bluuebunny/crossref_metadata_2025 huggingface dataset:
Elisabeth Jastrzębowska, Untersuchungen zum christlichen Totenmahl aufgrund der Monumente des 3. und 4. Jahrhunderts unter des Basilika des HI. Sebastian in Rom, Frankfurt am Mein 1981. Europäische Hochschulschriften 38, Archäologie. Bd 2, s. 251+20 pl.
Authors: Sadurska Anna
Published: August 2020

recenzja
Claude Lepelley, Les cités de l’Afrique romaine au Bas-Empire. T. 1: La permanence d’une civilisation municipale, Paris 1979, Études Augustiniennes, s. 422.
Authors: Śrutwa Jan
Published: August 2020

recenzja
Orygenes, Filokalia, przełożyła, wstępem i przypisami opatrzyła Katarzyna Augustyniak, Warszawa 1979, PAX, s. XL + 272
Authors: Kania Wojciech
Published: August 2020

recenzja
Prevalence and temporal distribution of surgical diseases in goats (Capra hircus) in Mymensingh district of Bangladesh
Authors: ISLAM Md. Ariful , AKTER Mst. Antora , ALAM Md. Mahmudul
Published: August 2020

Surgical diseases are common in goats and exert serious negative effects on animal's growth, productivity, and survivability leading to huge economic loss. This study was aimed at determining the prevalence of different surgical diseases of goats and to elucidate the seasonal impact leading to temporal distribution of these diseases in Trishal, Muktagacha and Fulbaria of Mymensingh, Bangladesh between the years 2009 to 2019. A total of 3744 goats were documented in all three Upazila. The overall prevalence was found to be 34.18% (1280/3744) in Fulbaria, 32.69% (1224/3744) in Muktagacha, 33.11% (1240/3744) in Trishal. The prevalence of different surgical affections in Fulbaria included: wounds 30.54%, gid 23.28%, urolithiasis 16.09%, bloat 9.06%, fracture 8.99%, lymphadenitis 6.48%, tumor 4.06% and gangrenous mastitis 0.94%; in Muktagacha these were wounds 30.83%, gid 23.08%, urolithiasis 19.98%, bloat 9.89%, fracture 9.06%, lymphadenitis 6.59%, tumor 3.70% and gangrenous mastitis 0.75%; in Trishal these were wounds 28.28%, gid 23.60%, urolithiasis 17.20%, bloat 9.12%, fracture 8.96%, lymphadenitis 6.88%, tumor 3.76% and gangrenous mastitis 0.80%. There was a somewhat similar temporal distribution pattern of the diseases in the study area. The study revealed that rainfall, relative humidity, and ambient temperature have a distinct influence on the occurrence and distribution of various surgical diseases and disorders. Prompt surgical intervention is recommended as most of the diseases are curable, and this will reduce the economic loss of the farmers.
Between formality and effectiveness: The dynamics of social participation in the political cycle of a tourism management council in Juiz de Fora/MG
Authors: DUARTE PİMENTEL Thiago , CARVALHO Fabíola , OLİVEİRA Marcela , DE LİMA MOURA Eliza Feres
Published: August 2020

Based on public policy theory this paper analyses how individual actors interact in order to push (or avoid) touristic issues in the public arena and what themes intro-duced in their agenda are converted into actions. It is a case study based on prima-ry and secondary data collection and analysis. Methodological it is carried on quanti-tative (descriptive statistic) and qualitative (contend analysis) techniques. The re-sults suggest a direct relationship between the power of the actors, the degree of participation and the tendency to approve and execute the proposals. In summary, some central actors drive the collective public policy.
Translation Assessment of Cultural Legal Terms as Translated from Arabic into English
Authors: Hassoon Ameer Majid , Al-Dahwi Sameer Salih Mehdi
Published: August 2020

تشمل الثقافة المعرفة والمعتقد والفن والقانون والخُلق والأعراف وأية عادات اجتماعية يكتسبها الإنسان بصفته عضواً في مجتمعه. وتؤدي الاختلافات الثقافية دوراً محورياً في الترجمة بين اللغات. وتشكل المحافظة على القيم الثقافية للغة الاصل في النص المُترجَم مهمة صعبة للمُترجِم.

تقوم هذه الدراسة على تقديم تقييم ترجمي للمصطلحات القانونية الثقافية العربية الصادرة من المحاكم الشرعية المترجمة الى اللغة الانكليزية. وأخذ الباحث المصطلحات من كتاب 'الدليل المعتمد للترجمة القانونية' للكاتب عادل عزام سقف الحيط.

تكمن مشكلة الدراسة في ان المصطلحات القانونية الثقافية العربية الصادرة من المحاكم الشرعية متأصلة في اللغة المنقول منها (اللغة العربية) مما يشكل صعوبة للمترجم في ترجمتها الى اللغة المنقول اليها (اللغة الانكليزية).
USLUB DIALOGIS KISAH NABI MUSA AS. DALAM AL-QUR’AN
Authors: Ibad Yuli Irsyadul
Published: August 2020

The Qur'an was revealed by Allah Swt. to the Prophet Muhammad Saw. in a very fluent language, Arabic with all its amazing characteristics. in the story of the Qur'an we find many verses that are dialogues between Allah Swt. and His messengers, between the apostles and his people, between pious people and others. And this conversation has a profound impact on the speaker as well as on the listener. In the revelation of God that the Qur'an there are many perfect stories, among the stories of the Qur'an ‎ which is very amazing and filled with mystery is the story and dialogue between the Prophet Moses with his people, the Prophet Moses with God, the Prophet Moses with Prophet Khidir and others. With the Balaghah Science approach, we can find that the words and dialogue of the Apostles can be used as guidelines and role models for us when communicating thoughts, ideas, intentions, feelings, and emotions directly in the world of education or for society. On this occasion the author will only examine the dialogue in the story of the Prophet Moses contained in the Qur'an ‎ with the aim to be more focused and not too long discussion. There is also a Balaghah qualitative research that specializes in Ma'ani knowledge, more precisely about Ijaz and Ithnab, with the hope of obtaining in-depth and detailed results. After the author conducted research on Ijaz and Ithnab in the conversation on the story of Moses in the Qur'an, the writer got several results, including that in the Qur'an there are 22 ijaz, 13 for ijaz qashr and 9 for ijazhadzfu. And there are 33 for ithnab, namely 3 for al-Idhahba'dal ibham (explanation after the unclear ones), 2 for dzikrul khas ba’dal ‘am(mentioning those that are specific after the general nature), 5 for tadzyil , 6 for takmil, 1 for tatmim, 5 for i'tiradh and 8 for tikrar. In the ijaz and ithnab there are many secrets, deep meanings, and enormous value. The purpose of ijaz and ithnab is to summarize, glorify, glorify, praise, criticize, strengthen meaning, explain meanings and others.
Efficiency of application of “Epin-extra” and “Zircon” biostimulants on potato landings in agroecological conditions of Republic of North Ossetia-Alania
Authors: Gazdanova Irina , Gerieva Fatima , Morgoev T.
Published: August 2020

Abstract. Recently, the trend of agricultural biologization has been gaining great importance. When cultivating crops, the use of biostimulants helps to improve the environment and produce environmentally friendly products. The purpose of the work is to identify the effectiveness of the use of biostimulants “Epin-extra” and “Zircon” in the cultivation of potatoes on the background of minimal doses of mineral fertilizers. Impact on productivity, morbidity and quality indicators of tubers. The novelty lies in the fact that for the first time in the agroecological conditions of the foothill zone of North Ossetia-Alania, the effectiveness of the use of the “Epin-Extra” and “Zircon” biostimulants on the indicators of productivity and quality of potato varieties was studied. Methods Accounting and observations were carried out according to generally accepted methods described in the “Educational-methodical guide for research in agronomy”. Results. As a result of the use of biostimulants “Epin-extra” and “Zircon” in combination with minimal doses of mineral fertilizers, they contribute to a reduction in the passage of the phenological phases of plants compared to the control by 8–9 days. The processing of potato tubers before planting “Epin-extra” and “Zircon” in combination with mineral fertilizers in minimum doses provided a high level of yield, on the Background 1 + “Epin-extra” variant by varieties: 33.7–39.1 t/ha. The biostimulants “Epin-extra” and “Zircon” possess not only growth-regulating properties, but also inhibit the development of diseases, in particular, increase plant resistance to late blight by 4.6–6.5 %.
Monitoring the aftereffect of multi-purpose compost in various agromicrolandscape conditions
Authors: Ivanov Dmitriy , Rabinovich Galina , Fomicheva Natal'ya , Anciferova Ol'ga
Published: August 2020

Abstract. At All-Russian Research Institute of Reclaimed Lands – a branch of the FRC V. V. Dokuchaev Soil Science Institute developed and successfully used multi-purpose compost obtained by fermentation of organic raw materials. The purpose of this work was to monitor the aftereffect of KMN, which consists in studying the productivity of seven-year crop rotation in various agrolandscape conditions and determining some biological indicators of soils at the end of rotation. Methodology and research methods. The studies were carried out on the agroecological transect of the All-Russian Research Institute of Reclaimed Lands testing ground, which intersects all landscape micropositions of the end moraine hill. The transect is divided into two parallel options (test field and control), identical in landscape terms. On the test field, under the laying of a seven-year grain-grass crop rotation, 12 t / ha of multi-purpose compost was added. Subsequent agrotechnological operations on the options were the same. Results. It has been established that over several years the highest productivity of crop rotation crops was obtained at eluvial and eluvial-transit positions of the test field. Further, the dependence of agromicrolandscape – multi-purpose compost – productivity of cultivated crops weakened. After the rotation of the crop rotation was completed, some biological indicators of soils were monitored. It was found that the number of nitrogen-transforming and phosphate-mobilizing microorganisms, as well as the activity of catalase and dehydrogenase enzymes in the test field is generally higher than in the control. Correlation analysis revealed several reliable relationships between the studied parameters on the test field. The main conclusion is that the effective aftereffect of multi-purpose compost is limited to five years of cultivating crops on soils with eluvial processes. Moreover, the application of KMN for seven years contributed to the preservation of soil fertility, ensured the formation of a more stable soil-microbial system, which is confirmed by the revealed correlation dependencies. Scientific novelty. New knowledge was gained about the long-term effect of compost on crop rotation productivity and biological indicators of soil properties at the end of rotation.
Knowledge Exchange Partnerships on Global Citizenship Education at Bridge 47 – Building Global Citizenship
Authors: Vela–Eiden Talia
Published: August 2020

How do you bring together academics, practitioners, and policymakers to advocate and partner for Global Citizenship Education? This is what EADI and Bridge 47 do with partners from all over Europe for a common goal, to promote transformative change in society.
Bridge 47 Target 4.7 Roadmap
Authors: 4.7 Bridge
Published: August 2020

Publication typology: Advocacy tool.

Responsibility: Bridge 47.

Author(s): Bridge 4.7 (with contributions of the participants of the Envision 4.7 Event, Helsinki, 6–7 November 2019).

Language: English.

Publication date: November 2019.

Pages: 4.

Acess: https://www.bridge47.org/node/241
La educación para el desarrollo en el nivel de posgrado: la propuesta pedagógica de la Maestría en Ciencias Sociales de la Universidad de Palermo, Argentina
Authors: Tonon Graciela , Molgaray Damián
Published: August 2020

En este trabajo presentaremos la propuesta pedagógica de la Maestría en Ciencias Sociales de la Universidad de Palermo, Argentina, que es un programa de posgrado que estimula en sus participantes el desarrollo de capacidades de pensamiento complejo y crítico y el compromiso con la realidad social y la diversidad humana. Esta Maestría tiene su eje en la generación de conocimientos que respondan a los problemas de la época con proyección futura; está basado en principios éticos de respeto a las personas, en tanto protagonistas, y a sus derechos; contribuyendo a la formación personal y colectiva, respetando la interculturalidad, la cooperación, la equidad y los derechos humanos. Todas estas características lo señalan como un programa que sigue los lineamientos de la educación para el desarrollo.
ACADEMIC VETERINARY ACTIVITY: REMOVING ORGANS FROM AN ANIMAL DURING NECROPSY
Authors: Furtado Gil Dutra , Sobral Felipe Eduardo da Silva , Furtado Ellen Monteiro , Christoffersen Martin Linsey , Mendes Tamara de Moura
Published: August 2020

The opening of the corpse follows a step by step of technique that exposes the abdominal and thoracic cavities during an autopsy. Although important, a complement of techniques is necessary for the removal of internal organs, aiming at more efficiency in the study and that will provide an adequate report. On the basis of a bibliographic review, the objective of this article was to demonstrate a technique for removing a set of internal organs from an animal in practical classes of veterinary anatomy. Such academic knowledge should aid students of veterinary medicine to learn the best techniques available in the field.
ABORDAGEM DA FISIOTERAPIA NEUROFUNCIONAL NO PACIENTE COM ATROFIA MUSCULAR ESPINHAL (AME)
Authors: Da Silva Neto Fernando Soares
Published: August 2020

A Atrofia Muscular Espinhal (AME) se caracteriza por ser uma afecção neuromuscular de origem autossômica recessiva, genética. Dentre as principais características da criança com AME e seus sintomas clínicos destaca-se a hipotonia axial e periférica acompanhada com fraqueza muscular, entretanto o que leva ao óbito esses pacientes são as complicações respiratórias. A reabilitação funcional desempenha um papel de extrema importância na qualidade de vida e melhora do prognostico dos indivíduos. O presente estudo tem como objetivo analisar e descrever as intervenções da fisioterapia neurológica na assistência ao paciente com AME. O presente estudo é uma revisão integrativa com abordagem qualitativa e quantitativa nas bases de dados SCIELO, LILACS e PUBMED. Foi utilizado os seguintes descritores em português presentes no DeCS Atrofia muscular espinhal, fisioterapia, doenças neuromusculares e seus correspondentes em inglês, associados ou isolados para ampliação da coleta de artigos referente a temática com outras palavras como: tratamento da atrofia muscular espinhal, fisioterapia na AME e fisioterapia respiratória. Todos cruzados com o operador boleado AND. Foram encontrados 37 artigos a partir dos descritores selecionados, aplicando os critérios de exclusão e leitura dos mesmos na íntegra, foram eliminados 32 artigos. Após levantamento dos dados, foram incluídos cinco estudos nesta revisão. Observou-se que a abordagem da fisioterapia seja ela motora ou respiratória nesse pacientes parece ser o fator de melhora no prognóstico desta doença e contribui para que a criança responda a estímulos, além de auxiliar no desenvolvimento de seu raciocínio, na interação e no contato com as pessoas e com o ambiente que a cerca. Conclui-se que a fisioterapia neurofuncional tem-se revelado promissora no tratamento das disfunções de pacientes com AME, podendo desacelerar a progressão da doença e melhorando a qualidade de vida dos mesmos, entretanto ainda há muita escassez na literatura sobre os protocolos e tempo de utilização.
Peningkatan Kemampuan Guru dalam Melaksanakan Problem Based Learning melalui Supervisi Akademik di Sekolah
Authors: Erti Maria Tatiana
Published: August 2020

Proses Pembelajaran pada satuan pendidikan diselenggarakan secara interaktif, inspiratif, menyenangkan, menantang, memotivasi pesertadidik untuk berpartisipasi aktif, serta memberikan ruang yang cukup bagi prakarsa, kreativitas, dan kemandirian sesuai dengan bakat, minat, dan perkembangan fisik serta psikologis peserta didik (Permendiknas nomor 22 tahun 2016). Problem Based Learning merupakan salah satu model yang direkomendasikan dalam Kurikulum 2013untuk memperkuat pendekatan ilmiah (scientific). Kenyataannya, 70% guru Matematika SMP Virgo Fidelisbelum memahami dan melaksanakan model Problem Based Learning secara baik dan benar.  Melalui PTS ini, diharapkan dapat membantu guru Matematika dalam; 1) menyusun dan mengembangkan silabus, 2) menyusun dan mengembangkan Rencana Pelaksanaan Pembelajaran; 3) melaksanakan proses pembelajaran sesuai dengan RPP, dan model PBL.Penelitian tindakan sekolah (PTS) initerdiri dari 2 siklus, yang masing-masing siklus terdiri dari perencanaan (planning); tindakan (acting); observasi (observing); dan refleksi (reflecting), kemudian berlanjut dengan perencanaan ulang (replanning), tindakan, observasi, dan refleksi untuk siklus berikutnya (Arikunto (2011:16). Dari kondisi awal (pra siklus) ketercapaianpelaksananan PBL masih 44,44, setelah dilaksanakan tindakan siklus I meningkat menjadi 62,50 dengan kategori cukup. Melalui fokus pada indikator yangbelum terpenuhidijadikan bahan kajian untuk menentukan tindakan pada siklus II. Hasil evaluasi pada Siklus II, menunjukkan bahwa kemampuan guru-guru Matematika melaksanakan PBL meningkat menjadi 86,11 dengan kategor Sangat Baik.  Hasil PTSmenunjukkan melalui supervisi akademik dan pendampingan dapat meningkatkan kemampuan guru dalam melaksanakan model Problem Based Learning dengan baik.
Peningkatan Keaktifan dan Hasil Belajar Siswa melalui Penerapan Strategi Pembelajaran Guided Note Taking Bervariasi pada Mata Pelajaran PKn
Authors: Turyanto Joko
Published: August 2020

Penelitian ini bertujuan untuk mengetahui penerapan strategi pembelajaran Guided Note Taking bervariasi untuk meningkatkan Aktivitas dan hasil belajar pada mata pelajaran PKn topik usaha pembelaan negara bagi siswa kelas IXB SMP Negeri 1 Wonosegoro semester 1 tahun pelajaran 2017/2018.Di dalam penelitian  ini  menggunakan  metode kualitatif  yang bersifat deskriptif,  yaitu mendiskripsikan data dan  menginterprestasikan data. Jenis penelitian yang digunakan adalah Penelitian Tindakan Kelas (PTK) yaitu  penelitian yang dilakukan oleh peneliti secara langsung.Setting yang digunakan dalam penelitian yaitu kelas IXB SMP Negeri 1 Wonosegoro semester 1 tahun pelajaran 2017/2018 yang merupakan satu di antara tujuh kelas IX secara paralel yang memiliki kemampuan Aktivitas dan hasil belajar siswa rendah. Teknik pengambilan data dalam penelitian ini dilakukan melalui tes dan non tes. Alat pengumpulan data menggunakan lembar pengamatan dan butir-butir soal. Untuk mengetahui keefektifan proses pembelajaran yang menerapkan strategi pembelajaran Guided Note Taking bervariasi ini, peneliti dan kolaboratur melakukan pengamatan selama proses pembelajaran. Sedangkan validitas data menggunakan content validity dan triangulasi. Analisis data menggunakan analisis deskriptif komparatif dan kualitatif. Indikator kinerja yang diharapkan dalam penelitian ini adalah: 1) meningkatnya Aktivitas siswa dari kondisi awal rata-rata 27,33% menjadi 42,67% pada siklus I, dan 72,67% pada siklus II. 2) meningkatnya hasil belajar dari kondisi awal rata-rata kelas 73,04 menjadi 80,00 pada siklus I dan 85,00 pada siklus II.Setelah dilakukan pengumpulan dan analisis data, dalam penelitian ini diperoleh hasil yang signifikan. Dari hasil penelitian telah menunjukkan bahwa strategi pembelajaran Guided Note Taking bervariasi dapat meningkatkan meningkatkan: 1) Aktivitas siswa dari kondisi awal yang rata-ratanya hanya 27,33% menjadi 42,67% pada siklus I, dan 72,67% pada siklus II. Terjadi peningkatan yang signifikan dalam ketercapaian aktifitas siswa dari 56,12%  dari siklus I naik menjadi 70,31%  disikklus II.  2) hasil belajar yaitu dari kondisi awal nilai rata-rata kelas 73,04 menjadi 82,14 pada siklus I dan 86,07  pada siklus II. Meningkatnya Aktivitas dan rata-rata nilai hasil belajar di dalam kelas, menunjukkan peningkatan terhadap Aktivitas dan hasil belajar pada mata pelajaran Pendidikan Kewarganegaraan topik usaha pembelaan Negara bagi siswa kelas IXB SMP Negeri 1 Wonosegoro semester 1 tahun pelajaran 2017/2018.
НОВЕ ПОКОЛІННЯ ВІТЧИЗНЯНИХ ВІЙСЬКОВО-ТРАНСПОРТНИХ ЛІТАКІВ
Authors: Лось Олександр Васильович , Рябков Віктор Іванович
Published: August 2020

According to European experts, only the USA and Ukraine can produce a full line of military transport aircraft of all weight categories (light, medium, and heavy).At the time of the creation of the “State comprehensive program for the development of the aviation industry of Ukraine until 2020” Ukraine had:- light transport aircraft An-32 with a carrying capacity of 6.7 tons and a range of 2500 km;- operational and tactical military passenger aircraft (MPA) with a carrying capacity of 30 tons and a range with a full load of 4300 km;- regional passenger aircraft Аn-148-100В (An-148-100V) with a maximum payload of 9.0 tons and a range of 2600 km.Through the efforts of the entire Antonov Company team, prototypes have been designed, manufactured, and partly tested such modifications as An-132D, An-178, and An-188, the implementation of which is based on the use of the new “Methodology for Designing Military Transport Aircraft Modifications, Taking into Account Profound Changes in the Wing and in the Power Plant”.Given the scientific provisions of this "Methodology ...":- based on the An-32 aircraft, a modification of the light aircraft MTA An-132D with a carrying capacity of 9.1 tons, with an increased range of up to 2400 km and with a fuel efficiency index higher than that of the base model, has been created through profound changes in the power plant, i.e. using PW150 engines and an increase in fuel mass by one and a half times;- based on the An-148 passenger aircraft, by means of profound changes both in the wing geometry and in the power plant, a modification of the mid-range military transport An-178 aircraft has been created with a carrying capacity of 18 tons and a range with a maximum load of 1.200 km, which provides a niche to this modification not occupied by competitors;- ensuring the complete superiority of the An-188 modification among analog competitors is also based on the profound changes: replacement the D27 turboprop engine for a turbofan CFM LEAP-1Ain the power plant; the use of a discrete geometric twist of the local wing chords, which ensured the aircraft range of 3200 km with a payload of 47 tons and significantly increased its combat readiness due to the use of turbofan engines.A comparative assessment of these military transport aircraft with their basic models shows that the team of the Antonov Company has honorably implemented the “State comprehensive program for the development of the aviation industry of Ukraine until 2020” in part of the creation of a new generation of military transport aircraft that is competitive in all technical and economic parameters.
ОЦЕНКА РЕЗУЛЬТАТИВНОСТИ ПРОЦЕССА ПРОЕКТИРОВАНИЯ АВИАДВИГАТЕЛЕЙ С ПОМОЩЬЮ ГРАФОВ
Authors: Степаненко Сергей Михайлович , Середа Татьяна Николаевна , Назаренко Юлия Александровна
Published: August 2020

The role of the aircraft engine design process effectiveness evaluating as an integral part of monitoring, measuring, and analyzing this process in the overall enterprise quality management system is considered. The general approach to the effectiveness evaluation and analysis is analyzed. It is noted that in the effectiveness evaluation, both integral indicators and calculations made for all the constituent elements of the process indicators should be determined. In order to identify the root causes of obtaining unsatisfactory performance indicators, each criterion is examined in detail, analyzing the results of each individual unit participation in the design process. For the analysis of quantitative indicators of the design process effectiveness, it is proposed to apply processes modeling and analysis using directed (oriented) and non-directional graphs. To carry out a structural analysis of the results, it is proposed to represent the graph in the form of a vertex adjacency matrix. Examples of the design processes effectiveness evaluating are considered according to the indicator “Number of design documents developed in a monitoring time (month)” and according to the indicator “Fulfillment of thematic plans items put under control, the deadlines for which have been postponed”. In the first example, in a directed graph, the group of output vertices consists of the design subdivisions involved in the design, and the group of input vertices consists of the projects that are being designed. The edges of the graph are the quantities of documentation developed by each unit for each project. In the second example, the connection of the output vertices of the graph, which are the design units, with the input vertex is carried out through the edges, on which the number of thematic plan points is set, the deadlines for which were postponed. The process of data mathematical processing recorded in vertex adjacency matrices is described. The proposed methodology application allows the analysis of the enterprise production activity results for each individual indicator of the analyzed process.
МЕТАЛОГІДРИДНИЙ АКУМУЛЯТОР-КОМПРЕСОР ВОДНЮ З АВТОМАТИЧНОЮ СИСТЕМОЮ УПРАВЛІННЯ ТА КОНТРОЛЮ
Authors: Ткач Михайло Романович , Тимошевський Борис Георгійович , Проскурін Аркадій Юрійович , Галинкін Юрій Миколайович
Published: August 2020

A project of metal hydride hydrogen compressor is presented, which can be used as an element of refueling complexes, hydrogen storage and compression systems. The capacity of the developed sample is 40 kg of hydrogen, the mass is 4,8 ton, and the maximum compression pressure is 15 MPa. The base metal hydride material on the basis of which this compressor battery model is developed is LaNi4.5Al0.5. the sorption capacity of hydrogen of which is determined experimentally, and is at least 1.38 % by weight. A feature of the developed compressor battery is the use of air cooling, the presence of an automatic monitoring and control system, I allow a number of operations to be performed in automatic mode, and the use of software, electrical and automatic protection against overpressure. Each accumulator-compressor is made in the form of a steel box in which six blocks (capsules) are placed. The block, respectively, is made in the form of a steel coaxial multilayer cylinder, on the outer side of which there is a heating element and a layer of thermal insulation. In the middle of the cylinder is a sealed capsule filled with metal hydride material. Capsules are interconnected with the collector through a piping system. Also, the piping system is equipped with an inlet valve connecting the volume formed with an external receiver. The battery-compressor is equipped with an external receiver, to which a hydrogen, vacuum, nutrient and consumable outline is connected. Each circuit is equipped with an electromagnetic valve, as well as measuring devices, which makes it possible to carry out automatic control of parameters and automatic control of the device in accordance with the operating mode. A list of equipment is presented, on the basis of which a system of automatic control and monitoring, a block diagram of the main operating modes, an interface of the developed software are developed. Depending on the mode chosen by the operator, the automatic control and monitoring system allows activation of metal hydride materials, purification of contaminants of harmful impurities, sorption and desorption of hydrogen.
ЕФЕКТИВНА ТЯГА ТА ЗОВНІШНІЙ ОПІР АВІАЦІЙНОЇ СИЛОВОЇ УСТАНОВКИ
Authors: Терещенко Юрий Юрьевич , Ластивка Иван Алексеевич , Гуменюк Павел Владимирович , Хунсян Су
Published: August 2020

Increasing the efficiency and effectiveness of a gas turbine engine can be achieved through a comprehensive review of all tasks that determine the parameters and characteristics of an aircraft power plant and aircraft. An important place in this complex is occupied by the problem of obtaining the most efficient traction and power plant based on the integration of the parameters and characteristics of the nacelle and gas turbine engine, consisting of a universal gas generator module and a turbofan module. Reducing the negative impact of the engine nacelle module on effective traction and effective specific fuel consumption is an urgent problem that can be solved based on the results of studies of the integration parameters and characteristics of the engine nacelle of the gas generator module and the gas turbine engine with the turbine-fan extension module, namely, with the implementation of structurally layout diagram of a gas turbine engine with a modular design with a rear arrangement of a turbofan attachment. For modern power plants with bypass gas turbine engines with a large bypass ratio, the external resistance is 2-3 % of the engine thrust during cruising operation. The results of experimental studies have shown that the external resistance of power plants with bypass gas turbine engines of modern supersonic aircraft is 4-6 % of the engine thrust during cruising operation. The paper considers the issues of aerodynamic integration of a gas turbine engine and a nacelle of an aircraft power plant. Aerothermogasdynamic integration of a gas turbine engine and an aircraft provides for the coordination of the parameters of the working process and the characteristics of the gas turbine engine and the parameters and characteristics of the nacelle of the aircraft in order to obtain optimal parameters and characteristics of the aircraft in the design flight conditions. The dependences of the relative effective thrust on the flight velocity are obtained. The obtained dependencies show the influence of the external resistance of the engine nacelle on the effective thrust of the bypass engine at subsonic flight velocities. The calculations were performed to lengthen the nacelle in the range from 4 to 8.
ИССЛЕДОВАНИЯ КОМПРЕССОРНОЙ И ТУРБИННОЙ ЧАСТЕЙ ТУРБОКОМПРЕССОРОВ С ОБЩИМ РАБОЧИМ КОЛЕСОМ ДЛЯ ПРИМЕНЕНИЯ В ДВИГАТЕЛЯХ И ЭНЕРГОУСТАНОВКАХ
Authors: Шкабура Владимир Анатольевич
Published: August 2020

To develop engines and power plants, the issues of improving engines through the use of a new type of turbomachines – turbo-compressors with general impeller (TCG) have been considered. There is another name for this type of turbomachine – a single-disk turbo-compressor (STC), although for bladed machines it is not the disk that is important, but the entire impeller. For example, a diagram of the simplest small-sized gas turbine engine using TCG is shown. For the systematization of relatively efficient TCG schemes, a classification has been developed and is given in the article, of possible schemes for a turbocharger with a common impeller. To implement one or another flowing pattern in the impeller, it is necessary to select the appropriate shape of the impeller blades and the location of the nozzle, exhaust, suction and discharge channels relative to each other. Depending on the direction of movement of the gas flows, turbo-compressors with a common impeller may have two flow patterns in interscapular impeller space – direct-flow and counter-flow. If the directions of the gas and airflow coincide to the axis of rotation of the impeller, then the flow pattern in the TCG is direct-flow, with opposite flow flows it is countercurrent. For carrying out the enlarged gas-dynamic calculation of TCG, formulas are given that make it possible to calculate the circumferential force arising on the blades of the impeller in the compressor and turbine working channels of the TCG. Also, formulas are given, with correction factors, for calculating the power factor of the compressor part and the load factor of the turbine part. In the process of computational and experimental studies, the characteristic of the compressor part of the TCG experimental model was obtained. If the ratio of the grating width to the average diameter of the working channel is overestimated, it is necessary to supplement the formula for calculating the compressor power factor with a correction factor. The test results of the compressor part of the TCG experimental model showed good agreement between the calculated and experimental values. Studies have shown that a turbocharger with a common impeller can be used as of gas turbine engines and in a turbo-supercharging system of a capacity internal combustion engine with not high supercharging.
ПРОБЛЕМЫ СОЗДАНИЯ САМОЛЕТОВ ТРАНСПОРТНОЙ КАТЕГОРИИ С УЧЕТОМ ЭКОЛОГИЧЕСКИХ ОГРАНИЧЕНИЙ
Authors: Лось Александр Васильевич , Рябков Виктор Иванович , Середа Татьяна Николаевна
Published: August 2020

With the growth of air transportation on airplanes of the transport category, their negative impact on the environment and humans increases.The environmental impact of civil aviation began to be addressed in the early 70s of the 20th century. There are three critical areas of impact: the surface layer of the atmosphere, where aerodrome emission is important, the upper troposphere at an altitude of about 10 km, where cruise flights of civilian aircraft take place, and not so long ago, the lower stratosphere (10…22 km), where, as expected, must be cruising the flight of supersonic transport of the future. In the first zone, the effect is direct damage to human health. In the second, aviation affects climate change. In the third zone, the ozone layer may be depleted as a result of aviation exposure.ICAO has established strict restrictions on all types of harmful effects, which are stipulated in our country in AP-25 and AP-36. It is noted that these requirements are constantly being tightened, as a result of which the noise level of the world fleet of aircraft over the past half-century has decreased by more than 30 percent.The article discusses the scheme of creating an aircraft taking into account environmental restrictions and economic costs to the level of decision-making on these problematic issues.The implementation of this approach in domestic aircraft construction is the creation of its modification, the An-132D, based on the An-32B aircraft. With an increase in the carrying capacity and range of this modification by re-arranging the wing-tail + tail assembly system of bearing surfaces, as well as replacing the power plant, it was possible to significantly reduce the fuel efficiency of this modification to 222 g / t km, which is the highest indicator for light vehicles airplanes. This means that An-132D has the least impact on greenhouse gas emissions and emissions.Besides, An-132D has several other advantages:- variable revolutions of the propeller Nвв = 850 … 1200 rpm;- “silent taxiing” at Nвв = 850 rpm within the aerodrome;- emergency operation of the main engine in case of failure of one of the two, not only during take-off but also, if necessary, on the route;- significantly better environmental indicators for harmful emissions of the marching engine and noise on the ground.An-132D is an implemented example of creating a transport category aircraft taking into account environmental restrictions.
МАГНИТОМЕТРИЧЕСКИЙ ПОДХОД К ИЗУЧЕНИЮ ВЛИЯНИЯ УГЛЕРОДА И АЗОТА НА КОРРОЗИОННУЮ СТОЙКОСТЬ АУСТЕНИТНЫХ ХРОМОНИКЕЛЕВЫХ СТАЛЕЙ
Authors: Снежной Геннадий Валентинович , Снежной Валентин Лукьянович
Published: August 2020

Extensive investigations of the corrosion resistance of austenitic chromium-nickel steels (with stable and unstable austenite) do not reveal the full nature of the phenomena studied. By the magnetometric method, using the specific magnetic susceptibility c0 of austenite and low content Рd d-ferrite (0…0.5 %), the corrosion properties of steels were studied. These parameters are determined by the chemical composition of steel, heat treatment and deformation. The pitting corrosion rate correlates with these parameters. In the scientific literature, the results of studies of the corrosion resistance of metals with variation over a wide range of carbon and nitrogen contents are given. In this work, the influence of these elements in five swimming trunks of each steel grade AISI 304 and AISI 321 is investigated. In steels AISI 304 and AISI 321, with an increase in c0 and Рd (under the condition low content of d-ferrite), the pitting corrosion rate К decreases. The values of c0 and Рd from the total content Q (wt.%) of all alloying elements for each melt are determined. The dependences of the corrosion rate K on Q for each melt of AISI 304 and AISI 321 steels are obtained. Various forms of К(Q) dependency curves are caused by a lower content of nickel, silicon and a higher content of chromium, manganese, carbon, nitrogen in AISI 304 steel. Also in AISI 321 steel, titanium is present. The dependences of К, c0 and Рd on the content of carbon and nitrogen, in the presence of all other alloying elements, are determined. Various (presence of a maximum or minimum) parabolic dependencies of К, c0 and Рd on the carbon and nitrogen contents were revealed. For melts of steel AISI 304, of the effect carbon and nitrogen on corrosion resistance are the opposite of the sum of all other alloying elements. For melts of steel AISI 321, the carbon present makes a smaller contribution to corrosion resistance compared to nitrogen. For AISI 321 steel melts, an ambiguous character of the dependence of the pitting corrosion rate K on the total content Q of all other alloying elements was found. Two values of Q (a parabolic dependence of K(Q)) can correspond to one value of K. The critical points (the content of alloying elements), before and after which the parameters c0, Pd can increase or decrease, are determined. As a result, the paramagnetic state of austenite changes, which correlates with a change in the corrosion properties of steel.
СТРУКТУРА И СВОЙСТВА ДЕТАЛЕЙ, ПОЛУЧЕННЫХ СЕЛЕКТИВНЫМ ЛАЗЕРНЫМ СПЛАВЛЕНИЕМ ПОСЛЕ ИСПЫТАНИЯ НА МАЛОЦИКЛОВУЮ УСТАЛОСТЬ
Authors: Педаш Алексей Александрович , Касай Павел Александрович , Клочихин Владимир Валериевич , Шило Валерий Григорьевич
Published: August 2020

Results of low cycle fatigue (LCF) testing, investigation of microstructure, and fractures of specimens, which was, obtain by selective laser melting process (SLM) of the powders from Inconel 718 alloy have been carried out in the present article. Chemical composition of the considered specimens, microstructure before and after testing, results at room and elevated temperatures, which were built in XY direction (horizontal), were carrying-out. The specimens in the as-build state were exposed by hot isostatic pressing (HIP) with subsequent inherent Inconel 718 heat treatment. It was established that in specimens in as-built state observe accurately expressed zones of layer-by-layer smelting with 100 μm height. After HIP with subsequent heat treatment strengthening of the considered alloy provides by intermetallic γ'' – Ni3Nb phase, γ'-phase and carbides, also was identified lamellar δ-phase in the microstructure. LCF-testing was conducted in a so-called «soft» cycle of loading with a predetermined interval of the strain for providing of fatigue life in 103, 5х103, 104 cycles. The obtained data was built logarithmic curve in coordinates «Strain σ – Number of cycles N», that allows, with sufficient reliability, determine a rational strain level at LCF-testing for providing a predetermined number of cycles. The following ratios of σ – N were established (Rσ=0, υ=1 Hz): for providing N=103, σ≤1020 МPа, N=5х103, σ=931…961 МPа, N= 104, σ≤941 МPа. Results of the fractures investigation after LCF-testing at 20°С and 550°С shows that during the cyclic elastoplastic deformation at room temperature multicentricity of crack initiations zones observes. Mainly fixed a viscous pattern of fracture with a fatigue grooves presence, which size increases in the process of crack advance to the zone of fracture area. At elevated temperature in the zones of fatigue crack initiation and spreading quasi-brittle character of destruction observes, and turns in viscous in the zone of fracture area. Authors should be pointed out that the application of additive technologies in the manufacture of aerospace parts requires extensive R&D works, and testing efforts to confirm the repeatability of alloy characteristics.
ПРОГНОЗИРУЕМЫЕ ЭФФЕКТЫ УПРОЧНЕНИЯ АЛМАЗНЫМ ВЫГЛАЖИВАНИЕМ ДЕТАЛЕЙ ПОЛУЧЕННЫХ С ПОМОЩЬЮ СЕЛЕКТИВНОГО ЛАЗЕРНОГО СПЕКАНИЯ
Authors: Вишнепольский Евгений Валериевич , Павленко Дмитрий Викторович , Двирнык Ярослав Викторович
Published: August 2020

The analysis of the possibility of expanding the scope of selective laser sintering technology has been made for the production of parts of short-range gas turbine aircraft engines due to the strengthening of stress concentration points by local plastic deformation by diamond smoothing. The technical, economic, and social effects of the application of this technology have been considered.The stress-strain state of complex-shaped thin-walled parts such as a disk and a monowheel of a short-life aircraft engine during their manufacture according to the traditional techniques from the compact materials VT8 and INCONEL 718 and according to the alternative technology from the materials Ti45Al3Nb (SLS) and INCONEL 718 (SLS)has been calculated and studied. The analysis of stress fields in stress concentration zones is carried out. Estimates are obtained from the static strength reserves of these parts during delamination and rupture of the force layers. A comparison of the obtained reserves of static strength for various places of stress concentration of parts made of compact and non-compact materials has been performed.The effectiveness of the use of alternative technology has been estimated by calculating the unit cost of production in mass production with a production program of 1000 pcs. The economic effect of the use of selective laser sintering and hardening technology in the manufacture of a part of a disk made of INCONEL 718 non-compact material (SLS) is estimated in comparison with the basic technology for the production of a part made of INCONEL 718 compact material in mass production. The comparison of the required capital investments for basic and alternative technology is carried out. The impact of alternative technology on the social and environmental spheres of human life has been assessed.Conclusions have been drawn about the prospects of introducing the technology of local plastic deformation by diamond smoothing to expand the scope of using SLS in the production of parts for the domestic aviation and aerospace industries and society, as well as its potential for other industries.
ИССЛЕДОВАНИЕ ПРОБЛЕМЫ ФОРМИРОВАНИЯ ЗАВИСИМОСТИ ПАРАМЕТРОВ ДИНАМИЧЕСКОЙ МОДЕЛИ ДВУХВАЛЬНОГО ТРДД ОТ РЕЖИМА РАБОТЫ
Authors: Епифанов Сергей Валерьевич , Зеленский Роман Леонидович , Бондаренко Алексей Васильевич
Published: August 2020

Mathematical models are efficient instrument of engines and their automatic control systems designing. The main areas of the models application are simulation modeling of the controlled object at analysis, synthesis and semi-natural simulation, and also model-based engine controlling algorithms designing. In this case, a set of mathematical models is used that is derived from the initial (base) thermo-gas-dynamic model of working process, which is usually designed and supported by the engine designer. However, it not satisfies the requirement of real-time calculations when the model simulates the engine dynamics at operation with the real electronic hardware. Lacking of the above-listed shortcomings dynamic model of the engine is formed as a combination of simplified static and dynamic models. In this case, the dynamic model has a linear structure and characterizes dynamic relations in a local area close to the engine static characteristics that is represented as the static model. This dynamic model can be determined by linearization of the base thermo-gas-dynamic model. The base model is grounded on characteristics of the engine components, which are built using experimental results and a peace-linear interpolation. Due to the peace-linear interpolation of the characteristics, relations between the engine parameters have breaks, that causes errors in calculations, which are done using the model, and not corresponds to real processes in the engine. The drastic method to overcome this problem is a perfection of thermo-gas-dynamic model by smoothing the characteristics of components. However, this will mismatch the model, which is used by the ASC designer, and the base model of the engine designer. This paper considers approximation of the dynamic model coefficients, which are determined using the component-based thermo-gas-dynamic model with the peace-linear interpolation of the components’ characteristics. The research is aimed in improvement of the used linear dynamic models in a state space and automation of their forming for the engine automatic control systems quality increasing and synthesis acceleration.
ПІДХІД НЕЧІТКОЇ КЛАСТЕРИЗАЦІЇ В РОЗПОДІЛЕНИХ ІНФОРМАЦІЙНИХ СИСТЕМАХ АВІАЦІЙНИХ ДВИГУНІВ
Authors: Товкач Сергій Сергійович
Published: August 2020

The article is devoted to the development of systematic approaches for the construction of a distributed information system (DIS) of aviation gas turbine engines (GTE). It is determined that the use of CALS-technologies (Continuous Acquisition and Life-Cycle Support), which should ensure the competitiveness of products on the world market, is essential for the integration of the aircraft engine industry into the world community of developers and manufacturers. The relevance of the use of CALS-technologies is due to the fact that today, in accordance with market requirements, the world's leading companies have set deadlines for the creation of a new design of the civil aviation engine of the fifth and sixth generations. The block-modular principle of engine construction - mathematical models and software - with the satisfaction of the criteria of divergence, transformation, and convergence has been considered. For a simplified search of the optimal technology for building a distributed information system of an aviation engine, the use of a fuzzy clustering approach is proposed, which is a design method with finding new knowledge about the gas turbine engine with highly efficient performance. By identifying methods of knowledge analysis and basic methods of clustering, that are K-means, graph clustering algorithms, algorithms of the FOREL family, hierarchical clustering, Kohonen neural network, algorithms of the KRAB family, fuzzy mean algorithms, subtractive, the application clustering in distributed information systems of aviation engines have been determined. For the convenient implementation of the defined method, a set of data objects of the GTE information system, which are contained in the experimental files, are considered. According to the results of the fuzzy clustering procedure, the coordinates of the class centers, the belonging of each data set to the classes, the values of the objective function, which have an approximate character, and are used for preliminary structuring of the data, are fixed. After research, it was determined that the integration of clustering algorithms should help build a more accurate model of the gas turbine engine and increase its speed.