bluuebunny/crossref_metadata_2025_split huggingface dataset:
КОМБИНИРОВАННЫЙ МИКРОКАНАЛЬНЫЙ РЕАКТОР ДЛЯ ПАРЦИАЛЬНОГО ОКИСЛЕНИЯ МЕТАНА
Authors: Грибовский А.Г. , Андреев Д.В. , Макаршин Л.Л. 
Published: August 2021

Проведено исследование процесса парциального окисления метана (ПОМ) для получения синтез-газа в комбинированном каталитическом микроканальном реакторе (МКР), состоящем из двух последовательных зон – зоны 1 малого объёма и зоны 2 большего объёма, связанных между собой по теплопередаче. Установлено, что при больших входных потоках реакционной смеси (объёмная скорость выше 1000000 ч-1) в зоне 1 идёт преимущественно экзотермическая реакция полного окисления метана, а в зоне 2 – эндотермические реакции паровой и углекислотной конверсии метана. Такая комбинация зон в микроканальном реакторе позволяет разгрузить энергонапряженность и, следовательно, уменьшить повышение температуры на фронтальной кромке микроканальных пластин, обычно возникающее в ходе процесса ПОМ. Показано, что проведение процесса ПОМ в комбинированном МКР, когда реакционная смесь последовательно проходит через зону 1 и зону 2, существенно увеличивает глубину протекания процесса ПОМ и увеличивает содержание синтез-газа на выходе за счёт передачи тепла из зоны 1 в зону 2. Так, при 750 °С и объёмной скорости входного потока 240000 ч-1 концентрация водорода и моноксида углерода на выходе составляет 30,1 и 23,7 об.% соответственно. Тогда как проведение процесса ПОМ только в одной зоне 2 МКР даёт на выходе концентрацию водорода и моноксида углерода только 23,2 и 20,1 об. % соответственно.
ВЛИЯНИЕ НАПОЛНИТЕЛЕЙ НА СВОЙСТВА БИОРАЗЛАГАЕМЫХКОМПОЗИЦИОННЫХ МАТЕРИАЛОВ НА ОСНОВЕПОЛИЭТИЛЕНСУКЦИНАТА
Authors: Потапов А.Г. 
Published: August 2021

Приготовлены композиты биоразлагаемого полиэтиленсукцината с рядом наполнителей – техническим углеродом, мелом и кукурузным крахмалом, с содержанием наполнителей от 5 до 40 % (до 33 % в случае технического углерода). Изучено влияние наполнителей на механические свойства и скорость разложения композитов в почве. Полиэтиленсукцинат характеризуется модулем упругости 650 МПа, относительным удлинением при разрыве 200 % и разрывной прочностью 18 МПа. В присутствии наполнителей модуль упругости увеличивается до 2-3 раз, а относительное удлинение при разрыве – до 1,5-2 раз по сравнению с полиэтиленсукцинатом. Наибольшее влияние на модуль упругости оказывает технический углерод. При высоких содержаниях наполнителей (33–40 %) относительное удлинение при разрыве снижается до 3-4 % в случае технического углерода и мела, и до 70 % в случае крахмала. Крахмал оказывает пластифицирующий эффект на полиэтиленсукцинат и способствует деформационному упрочению полимера. В отсутствии специфических бактерий полиэтиленсукцинат без наполнителей медленно разлагается в почве и теряет в течение года около 6 % исходной массы. Скорость разложения композитов в почве существенно замедляется в присутствии технического углерода и многократно ускоряется в присутствии крахмала. Мел слабо влияет на скорость разложения композитов.
ОЦЕНКА ВЛИЯНИЯ ЛЕГИРУЮЩИХ ДОБАВОК НА СТРУКТУРУ И МЕХАНИЧЕСКИЕ СВОЙСТВА СЕРЫХ ЧУГУНОВ
Authors: Чертовских Е.О. , Габец А.В. , Марков А.М. , Габец Д.А. 
Published: August 2021

В современных условиях развития промышленности эффективным методом повышения эксплуатационной надежности серых чугунов, работающих в сложных режимах ударно-фрикционного износа, является их комплексное легирование. Применение технологии легирование позволяет добиться значительного увеличения механических свойств за счет изменения структуры и характера распределения графита в чугуне. Цель данного исследования заключается в установлении зависимостей влияния легирующих элементов на эксплуатационные свойства серого чугуна, работающего в условиях ударно-фрикционного износа. В статье рассмотрен весь комплекс механических испытаний легированного никелем и молибденом износостойкого чугуна ЧМН-34М в сравнение с базовым чугуном СЧ35, предназначенного для деталей, работающих в условиях ударно-фрикционного износа. Проедены исследования предела прочности при растяжении и сжатии, представлена микроструктура чугуна ЧМН-35 после механических испытаний на излом. Так, предел прочности разработанного износостойкого чугуна составляет от 395 МПа до 450 МПа, а твердость находится в пределах от 276 до 318 HB. Установлено, что применение технологии легирования способствует формированию структуры с более равномерным распределением графитных включений, что способствует увеличению величины предела прочности сплава при растяжении и сжатии. Проведен анализ результатов фрактографических динамических разрушенных образцов, механизм разрушения серийного и легированного чугуна одинаков, разрушение образцов происходит по хрупкому типу с явным преобладанием межзеренного разрушения, поверхность разрушения в легированном чугуне однороднее.
THE IMPACT OF MIGRATION PROCESSES ON THE FORMATION OF HUMAN POTENTIAL AND CAPITAL OF SEVASTOPOL
Authors: Deryugin Pavel , Yarmak Ol'ga , Strashko Ekaterina , Yarmak Veronika , Astrahanceva Elena 
Published: August 2021

The article presents the results of the analysis of the impact of the migration factor on the dynamics of the human potential of the Sevastopol region. The huge migration growth in the city of Sevastopol over the past three years is of great interest for the study. This phenomenon cannot but influence the magnitude of the human potential of the region, the attitude of city residents to this phenomenon, as well as its network component.
The conclusions made as a result of the study include: 1) migration processes occurring in the region have a huge impact on all components of regional human potential, strengthening or weakening its network social component, which underlies the structure of potential, 2) analysis and calculation of indicators showed that degradation (loss) of human potential indicators is taking place in Sevastopol, in particular, a number of factors influencing the migration growth, as well as the problems of the indigenous population associated with migration processes, were identified. 3) The study revealed a widespread hostility towards migrants among city dwellers, with whom many associate an increase in crime, a complication of the situation on the labor market and other negative trends.
MODERN PROBLEMS OF SECURING YOUTH IN RURAL AREAS
Authors: Gemadeeva Julia 
Published: August 2021

The key contradictions in the transformation of the social infrastructure of rural areas are that the necessary transformation requires significant financial investments, and funding flows are invariably small. In addition, the specifics of rural areas are that the transformation being implemented requires significant investments, but the degree of financing is still small. And there are also constant discussions between the importance of using effective resources and the simultaneous territorial spread of the rural population, between the importance of system maintenance of society and the formation of specialization of rural economic entities and social structures.
Currently, it is not possible to improve the conditions and management in rural areas without trained professional personnel. Solving the difficulties of securing young people in the village, it is necessary to develop and carry out a set of measures to increase quality indicators and attractiveness.
COMPARISON ON VEGETATION COMPOSITION AND STRUCTURE OF EXCLOSURES VS. OPEN GRAZING LANDS IN NORTHERN ETHIOPIA
Authors: Jemaneh Samson Shimelse 
Published: August 2021

This study was conducted with the objectives of study investigates, compare, and try to describe the floristic composition and structure of the vegetation of exclosures and open grazing lands. A stratified preferential sampling design technique with flexible systematic model was used for data collection. Data on vegetation and environmental parameters were gathered from 120 quadrants (90 from restorations or exclosures of different ages and 30 from adjacent open grazing lands), of 20 m x 20 m (400 m2) size. Species richness and the presence or absence of herbaceous plants were recorded like soil samples in a 2 m x 2 m (4 m2) subplot inside each main quadrant from five points, one at each corner and one at the center. A total of 142 plant species belonging to 118 genera and 52 families were identified. All exclosures displayed higher plant species richness, diversity, and aboveground standing biomass compared to the adjacent open grazing lands. Consideration of edaphic (e.g. soil total nitrogen, available phosphorus, CEC, exchangeable bases, soil pH and soil texture) and site (e.g. Stoniness, Grazing) variables will help to optimize the selection of areas for the establishment of future exclosures. Moreover, our study suggests that with time exclosures may increasingly obtain an important role as refugees and species pool similar to church forests and should be protected and managed in a sustainable manner. However, economic and social impacts of exclosures should be included in feasibility studies before establishing exclosures in the future. Altitude, Grazing and some soil parameters like Mg were the major environmental factors in the division of the vegetation into plant community types. The result of the frequency distribution of woody species showed a high proportion of small-sized individuals in the lower diameter classes indicating good recruitment potential of the forest patches and the rare occurrence of large individuals. Such trend was probably caused by past disturbance of the original vegetation resulting in a succession of secondary vegetation. In addition, the analysis of species population structure indicated that some tree species had abnormal population structure with no or few individuals at lower size classes. Moreover, assessment of regeneration status on the basis of age classes indicated that significant proportion of woody species were represented by few or no seedlings, entailing that they were under threat. Substantial numbers of forest species were found to have irregular population structure and are in reduced regeneration status. To prevent local extinction of these species, present efforts of nursery establishment and plantation of indigenous species in the exclosures should be strengthened and extended.
Asociación entre los rasgos de personalidad y la ocurrencia de accidentes de trabajo de riesgo biológico del personal de enfermería en el Hospital Universitario de Santander (HUS): estudio de casos y controles
Authors: Arenas-Sánchez Adriana , Pinzón-Amaya Alexander 
Published: August 2021

Introducción. Los accidentes de trabajo por exposición al riesgo biológico (ATBIO) son causas potenciales de enfermedades infecciosas relacionadas con alta morbilidad y mortalidad. La identificación de las causas que generan dicha accidentalidad permitirá establecer estrategias que controlen y disminuyan la siniestralidad laboral. El objetivo del presente manuscrito fue establecer la asociación entre los rasgos de personalidad, principalmente el rasgo de personalidad de despreocupación y la ocurrencia de ATBIO en el personal de enfermería del Hospital Universitario de Santander entre el periodo 2008 y 2009. Metodología. Estudio de casos y controles. Resultados. Se incluyeron 68 (18%) casos con historia de ATBIO y 290 controles, para una razón caso: control de 1:4. En el análisis multivariado se encontraron las siguientes variables asociadas a la accidentalidad laboral de riesgo biológico: percibir el riesgo de presentar un ATBIO en el servicio como alta OR: 0.42 (IC 95% 0.23 – 0.75), trabajar 24 o más horas adicionales a la semana OR: 2.66 (IC 95% 1.34 – 5.28), laborar en el servicio de urgencias OR:2.72 (IC 95% 1.38 – 5.35) , no disponer de guantes cuando se requieren durante su labor OR:2.05 (IC 95% 1.10 – 3.79), y percibir el riesgo como alto disminuye el riesgo en el 60%. Conclusión. Se identificaron variables significativas relacionadas con la ocurrencia de accidentes de trabajo, las cuales facilitarán la planeación, ejecución e implementación de programas de salud ocupacional dirigidos al control de la accidentalidad laboral de riesgo biológico. No se evidenció relación entre rasgos de personalidad y la ocurrencia de ATBIO.
Secuelas del COVID-19, ¿qué viene ahora?
Authors: Jáuregui-Buitrago María Teresa 
Published: August 2021

Señor editor.
Desde que empezó la pandemia causada por el coronavirus COVID-19, hemos estado en un constante aprendizaje. Los países se han visto obligados a responder con sus mejores estrategias, para intentar que los sistemas de salud no colapsen y resguardar la vida de las poblaciones. Con este propósito, se han establecido medidas de contención y servicios de hospitalización organizados, además del papel fundamental de las unidades de cuidados intensivos para tratar las infecciones de gravedad, con lo cual se han evitado miles de muertes.
A fecha de 11 de junio de 2021, en Colombia se habían reportado 3,724,705 casos, de los cuales 3,457,117 corresponden a los recuperados, lo cual es asimilable a quienes no perdieron la vida. Sin embargo, desconocemos cuántos de ellos tendrán consecuencias físicas y emocionales derivadas de la infección por COVID-19 (1).
Informação de perícias médicas para subsidiar ações de vigilância e promoção da saúde dos servidores públicos: o caso de uma universidade pública federal do Brasil
Authors: Krölls Tirze Barbalho , Presser Nadi Helena , Sánchez-Tarragó Nancy 
Published: August 2021

O estudo apresentado neste artigo teve como objetivo geral propor ações de vigilância e promoção da saúde dos servidores da Universidade Federal Rural de Pernambuco (UFRPE), com base nas informações de perícias médicas registradas, no período de 2016 a 2018, no prontuário eletrônico do Subsistema Integrado de Atenção à Saúde do Servidor (SIASS). Para isso, o estudo descreve o perfil de morbidade dos servidores que buscaram a perícia médica, analisa os principais fatores de risco no ambiente de trabalho e sua relação com o perfil de morbidade revelado, de modo a estabelecer prioridades para ações de educação e promoção da saúde. As ações propostas abrangem estudos ergonômicos, avaliação e acompanhamento psicológicos, capacitação, entre outras, para intervir nas principais doenças identificadas (psíquicas e osteomusculares). As informações registradas no módulo de Perícias Médicas do SIASS, até então subutilizadas, revelaram suas potencialidades, pois permitiram identificar os problemas e propor a tomada de decisões gerenciais em prol da prevenção de doenças e da melhoria da saúde dos servidores.
Avaliação da qualidade dos vídeos sobre câncer de mama mais visualizados no YouTube: relevância para promoção da saúde da mulher
Authors: Villa Larissa Silveira Carvalho , Mello Alex Del Cerro , Gonçalves José Vicente , Gomes da Silva Tânia Maria , Bernuci Marcelo Picinin 
Published: August 2021

O câncer de mama é uma das principais enfermidades que acomete a saúde das mulheres no mundo e as estratégias destinadas à melhoria do acesso das mulheres às informações sobre prevenção são fundamentais. O objetivo do estudo apresentado neste artigo foi avaliar a qualidade de vídeos relacionados ao tema do câncer de mama. A busca dos vídeos ocorreu a partir da palavra-chave ‘câncer de mama’ na plataforma YouTube. Os dados referentes às informações de cunho técnico foram obtidos por meio da análise das informações contidas na descrição dos vídeos e, posteriormente, foi realizada sua análise de conteúdo. Para serem analisados, foram extraídos os 200 primeiros vídeos mais vistos. A maioria (72%) e aqueles com intuito de divulgar conteúdo informativo ao leigo (73%) e com foco na prevenção secundária (71,5%) são considerados ruins ou péssimos (53%). Conclui-se, que o YouTube se apresenta como uma ferramenta limitada a ser utilizada no processo de educação de mulheres visando ao controle do câncer de mama.
Analisis Aspek Keterampilan Proses Sains Dasar Pada Buku Teks IPA Siswa Sekolah Dasar Kelas VI
Authors: Darmayanti N.W.S , Wijaya I.K.M. Wisnu Budi , Sanjayanti N.P.A.H , Janawati Dsk. Pt. Anom 
Published: August 2021

Tujuan penelitian ini adalah untuk mendeskripsikan sajian aspek keterampilan proses sains dasar pada buku teks IPA Bupena Sekolah Dasar (SD) kelas VI. Jenis penelitian ini adalah penelitian deskriptif dengan pendekatan kualitatif. Buku teks IPA Bupena SD kelas VI A adalah sumber data dalam penelitian. Instrumen yang digunakan dalam penelitian ini adalah berupa chek-list atau daftar cocok. Teknik pengumpulan datanya dengan studi dokumentasi, di mana data diperoleh dari menelaah dokumen berupa buku teks IPA Bupena SD kelas VI A. Proses pengumpulan data dengan memberikan cek –list pada setiap aspek keterampilan proses sains dasar yang terdapat pada setiap tema dari buku buku teks IPA Bupena. Teknik pengolahan data dilakukan dengan cara menghitung persentase sajian buku teks pelajaran IPA Bupena SD kelas VI A yang memfasilitasi keterampilan proses sains dasar. Hasil penelitian menunjukkan bahwa persentase sajian aspek keterampilan proses sains dasar pada buku teks IPA Bupena tema 1 yaitu sebesar 83% dengan kategori sangat memfasilitasi. Selanjutnya tema 2 persentase sajian sebesar 67% dengan kategori cukup memfasilitasi. Persentase sajian pada tema 3, yaitu sebesar 83%. Namun secara keseluruhan buku teks IPA Bupena sudah menyajikan materi yang memfasilitasi keterampilan proses sains dasar. Jumlah kegiatan yang menyajikan atau memuat aspek –aspek keterampilan proses sains dasar pada buku teks IPA Bupena berbeda-beda, di mana jumlah kegiatan yang tertinggi terdapat pada aspek mengamati, yaitu 19 kegiatan. Untuk aspek mengukur belum termuat pada buku teks IPA Bupena karena tidak ada materi IPA yang terkait dengan kegiatan mengukur.
Pengembangan Bahan Ajar Mata Kuliah Belajar Dan Pembelajaran Berbasis Tri Ciri Tentara Pelajar (Patriotisme, Kepeloporan Dan Kemandirian) Pada Mahasiswa UTP Surakarta
Authors: Beny Asfuri Ninda , Ambarsari Rika Yuni 
Published: August 2021

Bahan ajar merupakan salah satu faktor penting dalam keefektifan sebuah pembelajaran terlebih di tingkat Perguruan Tinggi. Kurangnya bahan ajar tentunya dapat mempengaruhi kualitas pembelajaran atau perkuliahan. Tujuan dari pengembangan modul ini yaitu 1) untuk menambah pemahaman mahasiswa mengenai tri ciri tentara pelajar yang mana akan dikembangkan di dalam mata kuliah belajar pembelajaran sehingga mahasiswa benar-benar menjiwai, memaknai dan bisa mengimplementasikan dalam kehidupan sehari-hari di kampus dan diluar kampus, 2) untuk mengetahui tingkat kelayakan bahan ajar yang dikembangkan.
Jenis penelitian ini adalah penelitian pengembangan atau researh and development. Pengembangan mengacu pada model pengembangan ADDIE (analysis, design, development, impementasi and evaluation). Berdasarkan keseluruhan penilaian produk oleh ahli materi dan pembelajaran diperoleh skor X = 265, yang termasuk dalam kriteria nilai “Sangat Baik”. Sedangkan keseluruhan penilaian produk oleh ahli media diperoleh skor X = 167, yang termasuk dalam kriteria nilai “Sangat Baik”.
The Importance of RRR in Cadastral System
Authors: Manandhar Sanjaya , Manandhar Bijaya Kumar , Upadhyaya Pradeep Sapkota , Dahal Tanka Prasad 
Published: August 2021

Cadastral System is the base platform to abstracting land rights; maintain its ecords and registration. It normally makes agreements with dispersed right interests as enure security, continuum of land rights, registration system, adjudication process and de-facto, local and central government policy aspects within land dministration party. As, RRRRights, Restrictions and Responsibilities are related to spatial unit and its owner, normally right contains ownership and tenure aspect whereas restrictions is related to control use and different activities on land. Responsibilities relate more to a social, environmental, communal, ethical obligation or defiance to environmental sustainability. Most cadastral system of developing countries are still absence in identifying and assigning clear RRR in certain spatial unit i.e. buffered on Highways, banks of Rivers and Streams and special cases of shade of High-tension-transmission lines etc. This paper aims to provide an overall understanding of such RRR cases with the concept of cadastral system. This paper aims to show AS-IS situation cadastral system with comparing TO-BE condition with gap analysis based on LADM conception of some related cases. This paper concludes that cadastral system will be good when there is clearly defined RRR. So, better identification and assignment of RRR between spatial unit and land administration party can support better cadastral system which supports to better land administration of country.
GNSS Practice in Survey Department
Authors: Timilisina Sushmita , Nepal Bibek 
Published: August 2021

Control Networks for Nepal was originally defined through the use of conventional measurements. Conventional mapping methods have led to a static and inactive networks of control point. This network of control served us very well until the devastating earthquake hit Nepal and disturbed it. Determination of precise ground locations is essential for various tasks such as engineering works, earth observation, location-based technologies, emergency service providers, etc. Global Navigation Satellite System plays a very important role in providing quick and reliable positioning/navigation data. The term ‘global navigation satellite system’ (GNSS) refers to a constellation of satellites providing signals from space transmitting positioning and timing data. These systems use the principle of trilateration to calculate the location of a user, through the information obtained from a number of satellites. Each satellite transmits coded signals at precise intervals. In principle, three satellites must be available to determine a three-dimensional (x,y,z) position , additional fourth signal is necessary for precise location of a single point. This helps in eliminating the time differences between satellite’s atomic clocks and the receiver's clocks. USA in around 1970’s started the use of Global Positioning System(GPS). Geodetic Survey Division under Survey Department commenced the use of GPS technology in 1991 A.D as a method for survey technology. Survey Department initiated the use of GPS for carrying out survey of the previously established high order control points. Transformation Parameters (TP) between the National Co-ordinate System and WGS-84 System was derived using the initial Control points co-ordinate and co-ordinate of the same Control points obtained from GNSS survey. GNSS has been used for establishing, updating and rehabilitation of Control Network, measure shift in location produced by earthquake and for various survey task carried out by Survey Department.