bluuebunny/crossref_metadata_2025 huggingface dataset:
Intra-tumoral injection of caerin 1.1 and 1.9 peptides in vaccinated TC-1 tumour bearing mice with PD-1 blockade modulates macrophage heterogeneity and the activation of CD8+ T cells in the tumour microenvironment
Authors: Ni Guoying , Wu Xiaolian , Liu Ying , Li Hejie , Chen Shu , Fogarty Conor , Frazer Ian , Chen Guoqiang , Liu Xiaosong , Wang Tianfang
Published: September 2020

Development of a vaccine formula that alters the tumour-infiltrating lymphocytes to be more immune active against a tumour is key to the improvement of clinical responses to immunotherapy. Here, we demonstrate that, in conjunction with E7 antigen specific immunotherapy, and IL-10 and PD-1 blockade, intra-tumoral administration of caerin 1.1 and 1.9 peptides further improves the tumour microenvironment (TME) when compared with injection of a control peptide. We used single cell transcriptomics and mass spectrometry-based proteomics to quantify changes in cellular activity across different cell types within the TME. We show that the injection of caerin 1.1/1.9 increases immune activating macrophages and NK cells, while reducing immunosuppressive macrophages with M2 phenotype, and increased numbers of activated CD8+ T cells with higher populations of memory and effector-memory CD8+ T subsets. Proteomic profiling demonstrated activation of Stat1 modulated apoptosis and production of nitric oxide. Further, computational integration of the proteome with the single cell transcriptome was consistent with deactivation of immune suppressive B cell function following caerin 1.1 and 1.9 treatment.
Study on Mine Pressure Control by Ground Fracturing High-level Hard Rock Strata
Authors: Gao Rui , Kuang Tiejun , Zhang Yanqun , Zhang Wenyang , Quan Chunyang
Published: September 2020

During extra-thick coal seam mining, the high-level thick and hard strata are the main reason for the presence of a strong ground pressure in the working face; however, there is no active and effective control technology for high-level hard strata. This paper proposes the concept of ground fracturing hard roofs, and the physical simulation was used to study the control effect of ground fracturing on the strata breaking structure and energy release. The results showed that the ground fracturing changed the structural characteristics of the strata and reduced the energy release intensity and overburden movement spatial extent, which had a significant control effect on the ground pressure. The Datong mining area was selected as the engineering background, a ground horizontal well fracturing engineering test was conducted on site, and a 20-m-thick hard rock layer, which was 110 m vertically away from the coal seam, was determined as the fracturing target layer. On-site microseismic monitoring showed that the crack propagation length was up to 216 m, and the height was up to 50 m. On-site mine pressure monitoring showed that the roadway deformation was reduced to 100 mm, the periodic weighting characteristics of the hydraulic supports were not obvious, the ground pressure in the working face was significantly controlled, and the ground fracturing was successful. Ground fracturing changed the occurrence characteristics of the high-level hard strata, which is beneficial to ameliorate the stress environment of a working face and provide a new approach of hard rock control.
The rationale for the modes of bonding veneer in the manufacture of plywood, manufactured with the use of melaminecarbamideformaldehyde resins
Authors: Соколова Е.Г.
Published: September 2020

Повышение эффективности производства фанеры, её конкурентоспособности в ряду плитных материалов является актуальной проблемой. Основными задачами являются повышение производительности труда, снижение токсичности продукции, её материало-, энерго- и трудоёмкости. Поставленные задачи решаются путем применения новых смол, составов клеев, технологических подходов, в частности с помощью применения меламинокарбамидноформальдегидных смол, модифицированных аэросилом техническим. Выполненные исследования позволили обосновать режимы склеивания пакетов шпона разной толщины с применением модифицированного клея на основе меламинокарбамидоформальдегидной смолы. За счёт уменьшения времени склеивания снижена продолжительность выдержки при максимальном давлении и снижении давления на втором этапе прессования с целью уменьшения упрессовки. Установлены необходимая продолжительность выдержки при максимальном давлении и давление на втором этапе прессования, которые обеспечивают необходимую прочность и минимальную упрессовку пакетов при изготовлении фанеры. Представлены режимы склеивания пакетов шпона разной толщины, значения упрессовки и прочности фанеры.

Improving the efficiency of production of plywood, its a competitive industry in a number of panel materials is an important issue. The main objectives are improving performance, reducing toxicity of the product, its material, energy and labor cost. The tasks are solved by the use of new resins, adhesives formulations, technological approaches, in particular through the use of melaminecarbamideformaldehyde resins, modified aèrosilom technical. Studies have allowed to justify the modes of gluing of the veneer packs of different thickness with the application of the modified adhesive based on melaminecarbamideformaldehyde resin. By reducing pressing time were decreased exposure at maximum pressure and the pressure reduction in the second stage of compression to reduce thinning of plywood. Set the required time of exposure at maximum pressure and the pressure in the second stage of pressing, which provide the necessary strength and minimum thinning of plywood. Describes the modes of gluing of the packages of veneers of different thickness, the values of thinning of plywood.
Determination of dynamic and statistical efforts in the construction elements of skid plate of the forest tractor
Authors: Нгуен Л.Л. , Гусейнов Э.М.
Published: September 2020

Приведена математическая модель для исследования динамики колесного лесохозяйственного трактора с активным полуприцепом в процессе погрузки пачки деревьев. Установлены минимальные значения нормальной составляющей скорости и ударного импульса. Расчеты, проведенные на основе математической модели, показали, что при погрузке пакета с помощью четырехзвенного щита, минимальные значения нормальной составляющей скорости и ударного импульса соответствуют значению угла , определяющего положение щита в момент контакта с пакетом, равного 55. Величина ударного импульса при значении  = 55 практически не зависит от коэффициента трения f. Апробация модели выполнена применительно к лесохозяйственному трактору Т-40Л.

The article presents a mathematical model for studying the dynamics of a wheeled forestry tractor with an active semitrailer in the process of loading a bundle of trees. As a result of the studies, the minimum values of the normal component of velocity and shock pulse. Calculations carried out on the basis of a mathematical model showed that when loading a bundle of trees using a four-link shield, the minimum values of the normal velocity component and the shock pulse correspond to the value of the angle  determining the position of the shield at the moment of contact with the packet equal to 55. The magnitude of the shock pulse at a value of  = 55 is practically independent of the coefficient of friction f. Approbation of the model was carried out with reference to the tractor T-40L.
Electronic maps as a tool to analyze spatial-temporal dynamics of forest fund lands Lisinskaya part of the teaching-experimental forest in Leningrad region
Authors: Тетюхин С.В. , Шубина М.А. , Павская М.В.
Published: September 2020

В статье рассмотрены возможности использования различного разновременного электронного картографического материала в научно- производственной деятельности Учебно-опытного лесничества Ленинградской области. Установлено, что благодаря возможности совмещать и единовременно анализировать в многообразном сочетании данные дистанционные зондирования и различные разновременные электронные тематические карты (общегеографические, геологические, почвенные, геоботанические, планы лесонасаждений и др.), можно говорить о новом использовании картографического метода. Приведенные материалы наглядно показывают, что изучение лесных экосистем, построенное на широкомасштабном применении разновременных электронных карт, позволяет намного эффективней, чем обычными методами, решать многие научно-производственные задачи.

The article discusses the possibility of using different multi-temporal e- cartographic material in scientific and industrial activities of Educational-experimental forestry of the Leningrad region. It is established that due to possibility to combine and simultaneously analyze in the diverse combination of remote sensing data and various multi-temporal electronic thematic maps (geographical, geological, soil, geobotanical, forest plantation plans, etc.) we can talk about the new use of the cartographic method. These materials clearly show that the study of forest ecosystems built on the widespread use of multi-temporal e-cards allows much more effective than conventional methods, to solve many scientific and production problems.
Preparation and activation of bio-carbon from bamboo
Authors: Чу К.Н. , Спицын А.А. , Пономарев Д.А. , Чухчин Д.Г. , Сазанов Ю.Н. , Федорова Г.Н.
Published: September 2020

Рассмотрен процесс получения карбонизации стеблей бамбука с целью получения биоуглерода. Куски бамбука размером 150 x 40 x 25 мм подвергали нагреву в реакторе со скоростью 2 °С/мин, затем содержимое реторты охлаждалось в атмосфере газов пиролиза. Уголь-сырец активировали водяным паром при 970 °С во вращающемся реакторе в токе азота. Продолжительность активации при температуре 970 °C в опытах составляла 5, 15, 20 и 25 мин. После охлаждения определялась потеря массы при активации (степень обгара). Для выявления особенностей термодеструкции стеблей бамбука по сравнению с древесиной березы были использованы зависимости потери массы от температуры полученные методом термического анализа. Основное отличие термодеструкции образцов бамбука от березы состоит в наличии четко выраженного пика эндотермического процесса при 360 °С. Учитывая близость химического состава бамбука и березы обнаруженное отличие объяснено рыхлой морфологической структурой бамбука. Методом сканирующей электронной микроскопии показано, что при активации угля-сырца из бамбука происходит изменение геометрической формы поперечного сечения пор, которые прибретают эллипсовидную форму. Для образцов активированного угля определена адсорбционная активность по иоду, которая изменяется в пределах от 20 до 60% и коррелируется со степенью обгара. Увеличение продолжительности активации и, соответственно, степени обгара способствует росту адсорбционной активности активированных углей.

To investigate the process of biocarbon preparation the carbonization of bamboo stems was investigated. With this purpose the bamboo stems were cut into pieces of 150 x 40 x 25 mm and then heated in stainless steel reactor with the speed 2 °С/min. After cooling in the atmosphere of pyrolysis gases a crude charcoal was subjected to activation in rotating reactor by steam at the temperature 970 °C and permanent flow of gaseous nitrogen and finally the mass losses were determined. To detect the characteristic features of thermodestruction of bamboo stems compared with those for birch wood the dependences of mass losses versus temperature were used which reveal clear endothermic peak at 360 °С. Taking into consideration the similarity of chemical composition of bamboo and birch this difference could be attributed only to morphological structure of bamboo tissues. By scanning electron microscopy it was demonstrated that activation of crude biochar leads to the rise in number of pores in charcoal with simultaneous changes of cross-section of pores which becomes ellipsoid in the shape after activation. Iodine method to measure an adsorption activity of activated charcoal was applied and it was determined that its activity ranges from 20 to 60%. A good agreement of this value with weight losses during activation is found. An increase of the time of activation results in increase of adsorption activity of target bamboo charcoal.
The study of the fractional composition and mechanical properties of bleached chemical thermomechanical pulp and compositions with waste-cellulose fiber
Authors: Ковернинский И.Н. , Прокопенко К.Д. , Дубовый В.К. , Криницин Н.А. , Суслов Г.А.
Published: September 2020

Проведено исследование фракционного состава и физико-механических свойств беленой химико-термомеханической массы (БХТММ) из древесины тополя и её влияния на механические показатели бумаги в композиции с вторичным волокном, полученным из макулатуры марки МС-5Б. Новизной и особенностью рассматриваемой БХТММ является ее получение по экструзивной технологии, принципиально отличающейся от классической операции предварительной обработки древесины в виде щепы и превращения ее в волокноподобную костру для последующих ступеней размола. Исследованная БХТММ из древесины тополя при степени помола не ниже 40 оШР имеет физико- механические показатели, сравнимые с вторичным волокном, полученным из макулатуры марки МС-5Б. Ее добавки в волокнистую композицию бумаги для гофрирования и картона-лайнера для плоских слоев гофрированного картона целесообразны в интервале 30–50%. Небеленая ХТММ, получаемая по экструзивной технологии, в качестве первичного высококачественного целлюлозного волокнистого полуфабриката может эффективно использоваться в производстве гофрированной тары. Экструзивная технология является перспективной для переработки неликвидной древесины и отходов лесопромышленных предприятий и рекомендуется для использования в России.

In this paper, the study of the fractional composition and physico-mechanical properties of bleached chemical-thermomechanical pulp (BCTMM) from poplar wood and the effect on the mechanic properties of paper from composites with recycled fiber from MS-5B paper was conducted. The novelty and feature of BCTMM is its production using extrusion technology, which is fundamentally different from the classical operations of pretreatment of wood in the form of chips and turning it into a fiber-like scutch for subsequent grinding steps. The studied BCTMM from wood of poplar with a degree of grinding not lower than 40 оSR has physical and mechanical properties comparable to the secondary fiber of MS-5B waste paper. Its additives to the fibrous composition of paper for corrugation and cardboard-liner for flat layers of corrugated cardboard are expedient in the range of 30–50%. Unbleached CTMM obtained by extrusion technology, as a primary high-quality cellulosic fiber semi- finished product can be effectively used in the manufacture of corrugated packaging. Extrusive technology is promising for the processing of illiquid wood and waste of timber industry enterprises and is recommended for use in Russia.
Research of the process of structure formation with the strengthening of organic sediments of wash water of the Vodokanal State Unitary Enterprise with complex binde
Authors: Зубова О.В. , Силецкий В.В. , Тюрин Н.А. , Громская Л.Я. , Антонова Т.С.
Published: September 2020

В исследованиях рассмотрено применение осадка промывных вод ГУП Водоканал СПб , укрепленного органическими и минеральными вяжущими, в качестве дорожностроительного материала с высокими физикомеханическими показателями и повышенной морозостойкостью, а также низкой теплопроводностью. Представлены результаты исследования смеси осадка промывных вод, укрепленного нефелиновым шламом, битумом и портландцементом марки М400. Полученные показатели подтверждают возможность использования данной смеси при возведении земляного полотна, строительстве морозозащитных и теплоизолирующих слоев дорожных оснований. Применение полученного материала также положительно повлияет на экологическое состояние СевероЗападного региона, так как при создании материала капсулируются отходы промышленности, что позволяет утилизировать их без вреда окружающей среде.

In researches application of the deposit of washing waters SUE Vodokanal of SPb strengthened organic and mineral knitting, as roadbuilding material with high physicomechanical indicators and the increased frost resistance and also low heat conductivity is considered. Results of a research of mix of the deposit of washing waters strengthened by nepheline slime, bitumen and a portlandtsement of M400 brand are presented. The received indicators confirm a possibility of use of this mix at construction of a road bed, construction protecting from frost and the heatinsulating layers of the road bases. Use of the received material also positively will affect an ecological condition of the Northwest region as during creation of material industry waste is encapsulated that allows to utilize them without harm to the environment.
Visco-elastic-plastic movement of wood material
Authors: Базаров С.М. , Говядин И.К. , Елкин А.В.
Published: September 2020

Материал древесины как природный полимер в зависимости от характера теплового движения может находиться в трех релаксационных состояниях: стеклообразном, в котором возможны только колебательные движения атомов в макромолекулах, высокоэластичном, в котором возможны колебательные движения звеньев и сегментов и их взаимная подвижность, вязкотекучем, в котором имеет место подвижность макромолекул и элементов надмолекулярной структуры в целом. Этим состояниям соответствуют агрегатные структуры: первому твердая, второму твердая и третьему жидкая. В тепловом поле при повышении температуры происходят переходы полимера из одного релаксационного состояния в другое. При охлаждении происходят переходы в обратном направлении. В пространственно градиентных температурных полях полимер может находиться одновременно в твердом и жидком состояниях. Представленным трем релаксационным состояниям полимера ставится в соответствие обобщенная модель вязко-упруго-пластического тела. Уравнения движения материала древесины построены на основании феноменологических представлений механики сплошной среды, замыкание уравнений выполнено на основе связи тензора напряжений с тензором деформаций в соответствии с выбранной реологической моделью для материала древесины как полимера. Уравнения построены для однородной сплошной среды, при переходе к неоднородной скалярные релаксационные параметры состояния полимера необходимо представлять в тензорной форме. Данное исследование может рассматриваться как элемент основ механики биополимеров.

Wood material, as a natural polymer, depending on the nature of thermal motion can be in three relaxation States: glassy, in which only vibrational movements of atoms in macromolecules are possible highly elastic, in which vibrational movements of links and segments are possible, and their mutual mobility viscous, in which there is mobility of macromolecules and elements of supramolecular structure as a whole. These States correspond to aggregate structures: the first solid, the second solid and the third liquid. In the thermal field, when the temperature rises, the polymer transitions from one relaxation state to another. When cooled, transitions occur in the opposite direction. In spatially gradient temperature fields the polymer can be simultaneously in solid and liquid States. The generalized model of visco-elastic-plastic body is put in accordance with the presented three relaxation States of the polymer. The equations of motion of the material of wood is built on the basis of phenomenological concepts of continuum mechanics, the circuit equations is made on the basis of when the stress tensor with the strain tensor in accordance with the selected rheological model for wood material, like a polymer. The equations are constructed for a homogeneous continuous medium, in the transition to inhomogeneous scalar relaxation parameters of the polymer state must be represented in tensor form. This study can be considered as an element of the foundations of biopolymer mechanics.
Mobile Cordova-applications for collecting data on the state of forest territories with reference to geolocation
Authors: Васильев Н.П.
Published: September 2020

Предложен вариант организации централизованного сбора первичных данных о состоянии лесных территорий, включая фото, с привязкой их к местоположению с помощью гибридных приложений Cordova. Сбор возможен в автономном режиме, что важно при отсутствии связи на удалённых территориях. Разработаны шаблоны программных кодов для доступа к геолокации и камере мобильных устройств.

A variant of organizing a centralized collection of primary data on the state of forest territories, including photos, with reference to their location using the Cordova hybrid applications is proposed. Collection is possible offline, which is important in the absence of communication in remote territories. Software code templates have been developed for access to geolocation and the camera of mobile devices.
Method of evaluating the efficiency of application complex machines for collection and transportation logging waste
Authors: Мохов С.П. , Арико С.Е. , Кононович Д.А. , Протас П.А.
Published: September 2020

Разработана методика, позволяющая устанавливать эффективность работы комплекса машин для сбора и транспортировки лесосечных отходов. Такая методика является универсальной при определении производительности комплекса машин, связанная с ее адаптацией к различным технологиям, технологическим и конструктивным особенностям базового шасси и оборудования. В результате проведения оценки эффективности применения таких машин получены данные, на основании которых даны рекомендации по дальнейшему совершенствованию конструкции и рациональном использовании такого вида техники в различных природно-производственных условиях. Основными технологическими параметрами, влияющими на существенное изменение производительности машин для сбора и транспортировки лесосечных отходов, являются технологии заготовки древесины и ликвидный запас. Осуществляя заготовку лесосечных отходов после разработки лесосеки бензиномоторными пилами, можно достигнуть наибольшей производительности работы комплекса машин. Из технических особенностей значительно влияющих на эффективность работы комплекса машин являются ширина захвата технологического оборудования для формирования куч или вала и степень уплотнения лесосечных отходов в полуприцепе машины для транспортировки отходов.

A methodology has been developed to ensure the efficient operation of a set of machines for collecting and transporting logging waste. This technique is universal in relation to various technologies, as well as to the technological and design features of basic equipment and equipment. As a result of the evaluation of the effectiveness of the use of such machines, data were obtained based on recommendations for the further improvement of the design and the rational use of this type of equipment in various environmental and production conditions. The main technological parameters affecting a significant change in the productivity of machines for collecting and transporting logging waste are wood harvesting technologies and liquid stock. By harvesting logging waste after developing the cutting area with gasoline-powered saws, one can achieve the greatest productivity of the machine complex. Of the technical features significantly affecting the efficiency of the complex of machines are the width of the processing equipment for the formation of heaps or the shaft and the degree of compaction of logging waste in the semi-trailer machine for transporting waste.
Potency of Citrus reticulata Peel Extract as Active Compound of NonAlcohol Based Gel Hand Sanitizer
Authors: Santoso Julyana Dika , Prasetyaningsih Aniek , Madyaningrana Kukuh
Published: September 2020

Hand sanitizer is nowadays known as a part of one’s personal hygiene kit because of its practical use andeffectivity against skin microbes, such as Staphylococcus aureus. The common commercial hand sanitizers are madefrom alcohol which may have negative side effect like skin irritation. Utilization of active compounds from a plantthat has antibacterial compounds might be applied to the substitution of alcohol in the formulation of hand sanitizer.In this study, phytochemical compounds from Citrus reticulata and Citrus aurantifolia peel extracts were testedqualitatively and their antibacterial acitivity on Staphylococcus aureus were tested using disk diffusion method. Theresults showed that Citrus reticulata peel extract at the concentration of 70% was the most effective concentration ininhibiting Staphylococcus aureus. This certain concentration of Citrus reticulata peel extract was then chosen in the gelhand sanitizer formulation. Application of gel hand sanitizer with Citrus reticulata peel extract as its active compoundon the hands of respondents were also observed to inhibit bacterial growth. The use of peel extracts from Citrusspp, especially from Citrus reticulata might be potential in the formulation of non-alcohol based gel hand sanitizer.
Analytic and numerical bootstrap of CFTs with $O(m)\times O(n)$ global symmetry in 3D
Authors: Henriksson Johan , Kousvos Stefanos R. , Stergiou Andreas
Published: September 2020

Motivated by applications to critical phenomena and open theoretical
questions, we study conformal field theories with
O(m)\times
O(n)O(m)×O(n)
global symmetry in d=3d=3
spacetime dimensions. We use both analytic and numerical bootstrap
techniques. Using the analytic bootstrap, we calculate anomalous
dimensions and OPE coefficients as power series in
\varepsilon=4-dε=4−d
and in 1/n1/n,
with a method that generalizes to arbitrary global symmetry. Whenever
comparison is possible, our results agree with earlier results obtained
with diagrammatic methods in the literature. Using the numerical
bootstrap, we obtain a wide variety of operator dimension bounds, and we
find several islands (isolated allowed regions) in parameter space for
O(2)\times O(n)O(2)×O(n)
theories for various values of nn.
Some of these islands can be attributed to fixed points predicted by
perturbative methods like the \varepsilonε
and large-nn
expansions, while others appear to arise due to fixed points that have
been claimed to exist in resummations of perturbative beta
functions.
Entrepreneurial management of project supply chain – a model approach
Authors: Korpysa Jarosław , Halicki Marcin , Lopatka Agnieszka
Published: September 2020

The paper’s principal purpose is to present the original concept of the project supply chain’s entrepreneurial management. Based on the literature on the subject, one defines the entrepreneurial management concept showing the influence of entrepreneurial management on company operation. Moreover, the paper also outlines the most important concepts of the project supply chain and presents the functioning scheme. Theoretical considerations concerning contemporary theories of entrepreneurial management and project supply chain are the prelude to presenting the concept of entrepreneurial management. The presented approach can be found helpful for the effective management of the project supply chain, which has not yet been thoroughly defined. It should be mentioned that the designed model of the entrepreneurial supply chain management is an original proposal for the paradigm of project supply chains. Both in a classical and project supply chain, a significant role is given to the flow of material resources between the individual chain components. It determines that the project supply chain is mainly driven by the need for its members’ value increase. It was explained that regarding entrepreneurial competences, knowledge can be transferred to other organizations in the whole supply chain. It was also mentioned that the project supply chain’s entrepreneurial management takes into account the flexibility manifesting itself through the establishment of agile project teams, and by focusing on human relationships. It is the basis for the presented concept of the entrepreneurial management model of the project supply chain.
AcknowledgmentThe project is financed within the framework of the program of the Minister of Science and Higher Education under the name “Regional Excellence Initiative” in the years 2019–2022; project number 001/RID/2018/19; the amount of financing PLN 10,684,000.00.
A COMPLEXIDADE E A CULTURA ESCOLAR: APROXIMAÇÕES PARA TRATAR O TEMA ENERGIA NA ESCOLA
Authors: Sant'anna Thiago , Watanabe Giselle , Gurgel Ivã
Published: September 2020

Resumo

Esse artigo discute aspectos da cultura e complexidade, tomando-as como elementos que podem promover uma reflexão mais crítica acerca do trabalho em sala de aula. Metodologicamente, busca-se identificar a natureza das abordagens do tema energia e complexidade nos artigos acadêmicos da área de ensino de Ciências para então indicar, a partir também dos referenciais teóricos sobre cultura e complexidade, refletir sobre o trabalho escolar. Dos resultados, salienta-se que as publicações sobre energia buscam, seja no contexto da formação de professores ou na ação destes em sala de aula, uma aproximação com temas ambientais, sociais e relacionados a saúde de forma a diminuir a fragmentação que geralmente é encontrada nas disciplinas escolares. Já os trabalhos acadêmicos acerca da complexidade apontam tanto para a uma mudança de paradigma, no sentido de incorporação da perspectiva da complexidade como base do conhecimento e da linguagem escolar quanto a uma perspectiva mais pontual de mudança. Esses apontamentos indicam algumas potencialidades de trabalho em sala de aula que considere uma abordagem cultural e mais complexa.
FORMAÇÃO DE PROFESSORES: UMA ANÁLISE DE PLANOS DE AULA DIVULGADOS NA REVISTA NOVA ESCOLA
Authors: Silva Camila Rubira , Da Silva Mauren Porciúncula
Published: September 2020

A formação docente nos cursos de licenciatura, demanda tanto o estudo de conceitos científicos das disciplinas em que irão se especializar, quanto os pedagógicos, com enfoque na preparação à docência e nos processos de organização do ensino e da aprendizagem. Diante disso, objetivamos apresentar uma proposta pedagógica desenvolvida durante o estágio docente da primeira autora, no qual buscamos estimular 31 acadêmicos, do curso de Licenciatura em Matemática de uma Universidade do Rio Grande do Sul, a analisarem planos de aula para o ensino de Estatística divulgados na revista Nova Escola. A partir desta análise os acadêmicos puderam sintetizar e refletir sobre algumas potencialidades e limitações apresentadas nos planos de aula, as quais podem dificultar ou contribuir com o trabalho docente, tais como: a articulação dos conteúdos com as orientações estabelecidas na Base Nacional Comum Curricular (BNCC); a necessidade de considerarmos o conhecimento prévio dos estudantes; a importância de estabelecermos uma previsão das dificuldades que poderão surgir na aula; o pouco tempo planejado para o desenvolvimento das atividades; a falta de contextualização dos conteúdos com a realidade dos estudantes;  e a importância da elaboração e da revisão dos planos para que possa orientar qualquer professor que deseje aplicá-lo.
POLÍTICAS PÚBLICAS DO ENSINO DE LITERATURA NAS ESCOLAS: ALGUMAS DISCUSSÕES ACERCA DA LITERATURA E A SUA PRÁTICA
Authors: Bello Mess Lane De Souza , Dal Cortivo Raquel Aparecida
Published: September 2020

Num contexto no qual se noticia vigorosamente o baixo aproveitamento dos alunos na leitura, torna-se fundamental refletir sobre o ensino de literatura na escola e as políticas públicas de ensino que a envolvem. Dessa forma, urge refletir sobre as políticas públicas voltadas para o ensino de literatura no contexto escolar a partir de uma discussão que passa pelos os sentidos que a palavra literatura foi ganhando ao passar dos tempos e pelos discursos teóricos mais atuais sobre a literatura que permitem revisitar algumas correntes teóricas de forma a compreender a visão mais ampla sobre o conceito de texto literário. A discussão sobre o papel na literatura na sociedade permite pontuar algumas considerações sobre o ensino de literatura, confrontadas com alguns documentos oficiais. As discussões aqui realizadas rtem de um estudo bibliográfico e análise dos documentos oficiais sobre o ensino de literatura. Constatou-se que o significado do termo Literatura passou por diversas transformações e a compreensão sobre sua função social, cultural e formativa foi se modificando com o passar dos tempos.
PROFESSORAS QUE ENSINAM MATEMÁTICA E UM DENOMINADOR COMUM: GRUPO COLABORATIVO
Authors: Cremoneze Marcielli De Lemos , Ciríaco Klinger Teodoro
Published: September 2020

Analisamos o movimento da constituição de um grupo de trabalho colaborativo, especificamente, o papel do processo de reflexão sobre a prática, oportunizada pelo registro reflexivo de duas integrantes a partir da fotografia e de videogravação das aulas de Geometria. O referencial teórico abarca questões ligadas à aprendizagem do professor que ensina Matemática no ambiente dos grupos colaborativos, bem como do processo de sua formação continuada com base na prática reflexiva. A metodologia adotada se inscreve no campo dos estudos qualitativos, de caráter descritivo-analítico, em que a experiência releva características da colaboração no espaço de discussão coletiva como sendo um aspecto promissor dos procedimentos de produção de dados. Os resultados finais, permitem fazer a inferência de que as docentes tiveram suas práticas modificadas a partir do direcionamento das atividades propostas no grupo com base na dinâmica de registrar e compartilhar as aulas, questão central que levantou a necessidade de escrever, narrar e/ou gravar a própria atuação como fonte de desenvolvimento profissional. Esse dado trouxe ainda a compreensão de que, no compartilhar das ações, o sujeito se reconhece como protagonista de sua atividade e pode contribuir com o fazer do outro, corroborando a assertiva “o que falta em mim sobra em você”.
CHRONOS OU KAIRÓS? QUAL É O “TEMPO” DE FORMAÇÃO NOS CURSOS TÉCNICOS INTEGRADOS AO ENSINO MÉDIO NOS INSTITUTOS FEDERAIS DE EDUCAÇÃO CIÊNCIA E TECNOLOGIA- IFS?
Authors: Sobrinho Sidinei Cruz , Garnica Tamyris Proença Bonilha
Published: September 2020

O estudo tem por objetivo principal, verificar se há evidências significativas da influência da quantidade de carga horária total e ou duração em anos nos índices de eficiência acadêmica, e na perspectiva do currículo integrado e da formação integral, nos cursos de Ensino Médio Integrado. Pesquisa, em 57,9% dos 38 Institutos Federais,  40% do total dos cursos de Ensino Médio Integrado ofertados nos IFs até dezembro de 2018. Estabelece comparações com base nos índices oficiais de eficiência acadêmica nos IFs e contextualiza os limites e alcances da discussão. Apresenta e discute as problemáticas a serem respondidas para a definição da duração dos cursos de educação profissional integrados ao ensino médio. Os resultados da pesquisa apontam reflexões consistentes para o aprofundamento do estudo sobre o tema na organização curricular dos cursos dessa natureza e apresenta indícios consistentes de que nos cursos com maior duração os estudantes tendem a ter maior evasão e ou reprovação.
O UM ESTUDO QUANTITATIVO DAS CONEXÕES ENTRE A AÇÃO DOCENTE E A AÇÃO DISCENTE EM AULAS DE MATEMÁTICA, FÍSICA E QUÍMICA EM UM INSTITUTO FEDERAL DO PARANÁ
Authors: Benicio Marily Aparecida , Arruda Sergio De Mello , Passos Marinez Meneghello
Published: September 2020

Este artigo apresenta uma proposta para análise das ações discentes em sala de aula para as disciplinas de Matemática, Física e Química de um curso de Ensino Médio e Técnico Integrado. A investigação considerou por aporte teórico a Teoria da aprendizagem, ILLERIS (2013) e o aprender e a relação com o saber, CHARLOT (2000 e 2005). A questão de investigação foi: Como o aluno gerencia o tempo de suas ações durante as aulas de Matemática, Física e Química? Os procedimentos metodológicos adotados foram a Análise Textual Discursiva e o Estudo de Caso. Para as análises foram elaborados dois indicadores: o percentual de aproveitamento do tempo e o índice de efetividade das ações discentes. Os resultados apontaram que o aluno investigado apresentou diferentes distribuições do tempo em ações para cada aula analisada, fatos que expomos descritivamente por meio de representações gráficas.
Arang Aktif Kayu Leucaena Leucocephala sebagai Adsorben Minyak Goreng Bekas Pakai (Minyak Jelantah)
Authors: Muhammad Hafidzi Nur , Nikmah Faizatun , Hidayah Nurul Umrotul , Haqiqi Arghob Khofya
Published: September 2020

Minyak goreng merupakan kebutuhan pokok bagi kehidupan manusia. Alternatif pengolahan minyak goreng bekas adalah melalui proses adsorbsi dengan arang aktif kayu leucaena leucocephala. Penelitian ini bertujuan untuk memanfaatkan kayu leucaena leucocephala dan arang aktif dari kayu tersebut sebagai adsorben minyak goreng bekas pakai. Arang aktif dari kayu leucaena leucocephala dapat menurunkan kadar asam lemak bebas dan bilangan peroksida minyak goreng sebelum dan sesudah penggorengan secara berulang-ulang sehingga minyak jelantah dapat dipakai kembali. Untuk metode yang digunakan dalam penelitian yaitu metode eksperimen. Uji coba menggunakan arang aktif kayu leucaena leucocephala dengan minyak jelantah dan mencampurkannya. Komposisi pada arang aktif 75%, sedangkan pada minyak jelantah 25% dalam waktu satu setengah jam. Penelitian membuktikan bahwa arang aktif dapat memperbaiki kualitas minyak jelantah dengan menurunkan kadar asam lemak sehingga menjadikan warna dari minyak jelantah menjadi lebih jernih
Analisis Pengetahuan Konseptual, Prosedural, dan Metakognitif Siswa Melalui Pembelajaran Integrasi Flipped Classroom dan PBL
Authors: Bintang H , Darnah E , Masta Ngia , Rinaldi Rinaldi , Guswantoro T , Sianturi M
Published: September 2020

Student-centered learning (SCL) is a learning approach that not only encourages to how student constructs their conceptual knowledge, but also to achieve the involvement of their knowledge in daily activity, in forms procedural and metacognitive knowledge. Flipped classroom learning models marked by reversed learning activities syntax between class and home, which promoted student to active self-learning, before turn into face to face class meeting. Problem Based Learning (PBL) model provides students to apply their knowledge to formulate strategy and solution in facing their problem. Flipped classroom or PBL, both are student-centered learning models that triggers student to self-constructed knowledge actively and student’s curiosity to solve their problem. This paper attempts to analyze the influence of integration flipped classroom and PBL on conceptual, procedural, and metacognitive knowledge on Linear Motion subject. This research is a quasi experimental model with post-test only control design. The population in this study were all students of class X MIPA SMA Negeri 37 Jakarta in the 2019-2020 school year. The sample in this study were students of class X MIPA 1 as the experimental class and class X MIPA 2 as the control class. The sample was taken using cluster sampling technique. The results obtained showed that the percentage of conceptual, procedural and metacognitive knowledge of the experimental class was 88.9%; 77.8%; and 88.9% which is higher than the control class with the respective percentage 66.7%; 55.8%; and 75%. The integration of the flipped classroom and PBL models can be applied to materials other than Linear Motion to improve conceptual, procedural, and metacognitive knowledge.
Airborne Contact Dermatitis
Authors: Bonamonte D , Romita P , Filoni A , Angelini G , Foti C
Published: September 2020

Airborne dermatoses are complaints linked to external environmental, chemical, and biotic agents carried through the air. In general, airborne dermatoses that are most common in the work environment, tend to cause diagnostic problems that are challenging for both the patient and the doctor. It should also be borne in mind that since the external culprit agents are present in the environment, they do not only come in contact with the skin and mucosa, but can also be inhaled or ingested, thus also causing respiratory and systemic symptoms. Among the various clinical forms, airborne contact dermatitis interests the parts of the body exposed to the air: face, neck, upper aspect of the chest, hands, wrists. These cases must be differentiated from photocontact dermatitis; in the latter case, however, shadowed anatomic areas, such as the upper eyelids, behind the ears, the submandibular region, and under the hair, are not affected.
A Contingent Relationship Between Risk and Return: Toward A Behavioral Model of Decision Making
Authors: Mukherji Ananda , Desai Ashay B. , Wright Peter
Published: September 2020

Different researchers have conceptualized the risk-return relationship as being positive, negative, or curvilinear. This paper proposes a framework where different theoretical approaches can be mapped onto a two-dimensional risk-return space in order to reconcile them. Rather than a single and fixed reference point, we propose that there are two additional reference points. Furthermore, we present a polynomial risk-return relationship that suggests a negative risk-return relationship below and above the failure and success reference points, and a positive relationship in between the two points. Practitioner as well as research implications are discussed.
Surrounded by White Water: Conflicts in Management Sciences Regarding Truth and Reality
Authors: Stark Ernie , Stepanovich Paul , Poppler Paul , Hopkins Pamela J.
Published: September 2020

This paper addresses two academic perspectives having different implications for management scholars. The first reflects the thinking of an empiricist or positivist, a perspective familiar to graduates of schools of business in universities throughout North America. The second represents postmodernism, a perspective familiar to social scientists but most likely foreign to graduates of schools of business in North America. This paper speculates on how differing assumptions about the nature of truth and reality can be used to interpret a hypothetical dilemma faced by two management scholars invited to respond to a perplexing situation facing a business executive. Further, this paper brings to management scholars a debate that has raged with force for decades across the social sciences and places that debate within a framework not unfamiliar to management scholars.
Trust, Norms, and Cooperation: Development and Test of a Simplified Model
Authors: Jeffries Francis L. , Becker Thomas E.
Published: September 2020

Trust at the interpersonal level in organizational settings has been researched extensively, yet little has been learned about the process through which trust affects cooperation and of the role of the social context in this process. Further, the models most often cited are complex and difficult to operationalize. This study investigates the effects of trust, subjective norms, and intent to cooperate on cooperative behavior using a simplified model. The findings demonstrate that the simplified model is useful for understanding the link between trust and cooperation and underscore the importance of perceived norms in the process. Implications for management are discussed.
De behandeling van een omvangrijke ribtumor bij een hond
Authors: Debevere S. , Van De Maele I. , De Ridder M. , Waelbers T. , Gielen I. , de Rooster H. , Van Goethem B.
Published: September 2020

Een twaalf jaar oude Engelse cockerspaniël werd doorverwezen omwille van manken ten gevolge van een massa op de rechter cranioventrale thoraxwand. De uitwendig beperkte massa bleek bij radiografisch onderzoek over een grote intrathoracale component te beschikken. De patiënt werd gestageerd en op basis van de resultaten van computertomografisch onderzoek werd chirurgie gepland en de tumor werd en bloc verwijderd. Histopathologisch bleek het om een osteosarcoom te gaan dat reeds gemetastaseerd was naar de regionale lymfeklieren. De hond werd aanvullend behandeld met chemotherapeutica. Gedurende vier maanden was de hond vrij van klachten. Nadien ontstond respiratoire hinder en werden longmetastasen vastgesteld. De hond werd vijf maanden na de ingreep geëuthanaseerd. Deze casuïstiek illustreert dat een voldoende agressieve, multimodale behandeling de levensduur ook in geval van een gevorderde, maligne tumor kwaliteitsvol kan verlengen.
Chronisch progressief lymfoedeem bij het Belgisch trekpaard in België: klinische fenotypering, prevalentie en analyse van risicofactoren
Authors: De Keyser K. , Janssens S. , Peeters L. M. , Gasthuys F. , Oosterlinck M. , Buys N.
Published: September 2020

Het Belgisch trekpaard is belast met chronisch progressief lymfoedeem (CPL), een bekende, ongeneeslijke aandoening. Tot op heden bestaat er geen uniform diagnostisch protocol, waardoor een goede schatting van de prevalentie onbestaande is. Het doel van dit artikel was een eenduidige klinische onderzoeksmethode te ontwikkelen om de objectiviteit van de CPL-diagnose te verhogen en de prevalentie van CPL bij het Belgisch trekpaard na te gaan. Daarnaast werd aan de hand van statistische modellen het verband onderzocht tussen bepaalde factoren, zoals de interactie leeftijd-geslacht, vachtkleur en seizoen, enerzijds en het optreden van klinische symptomen anderzijds. Deze studie toont aan dat de prevalentie van CPL hoog is. In de volledige steekproef, waarbij een groot aandeel van de paarden jonger was dan drie jaar, was 60,66% aangetast. In een subset van oudere dieren (≥ 3 jaar) was dat 85,86%. Bij sommige paarden werden reeds milde symptomen gezien vanaf één jaar (14% van de jaarlingen), maar duidelijke letsels kwamen doorgaans voor vanaf de leeftijd van drie jaar. Het ontwikkelde protocol kan de CPL-diagnose en toekomstige gegevensverzameling vergemakkelijken. In de voorliggende studie werden factoren die significant geassocieerd zijn met CPL, i. e. interactie leeftijd-geslacht, vachtkleur en seizoen, geïdentificeerd en gekwantificeerd. Daarmee is de basis gelegd voor kwantitatief genetisch onderzoek met als ultiem doel CPL bij het Belgisch trekpaard te reduceren.
Ultrasonografische en histopathologische bevindingen bij een uremische kat met maagadenocarcinoom
Authors: Esmans M. , LeGarrérès A. , Bongartz A. , Carofiglio F. , Heimann M. , Schwarz T.
Published: September 2020

Een maagcarcinoom is zeer zeldzaam bij katten. In deze casuïstiek wordt een maagcarcinoom bij een chronisch uremische kat beschreven. De kat vertoonde symptomen als braken, gedeeltelijke dysorexie en gewichtsverlies. Op het ultrasonografisch onderzoek bleek dat de maagwand pseudogelaagd was, wat een specifieke indicatie is voor adenocarcinoom. Uit het histopathologisch onderzoek bleek dat dit adenocarcinoom gestructureerd was en dat een doorlopende intralymfatische infiltratielijn zichtbaar was onder de muscularis mucosae. Dit zou de pseudogelaagdheid kunnen verklaren.
Immunologische, diepe dermale vasculitis bij een kat
Authors: Gaisbauer S. , Vandenabeele S. , Daminet S. , Paepe D.
Published: September 2020

In deze casuïstiek wordt een 13,5 jaar oude, vrouwelijke, gesteriliseerde Europese korthaar beschreven met immunologische, diepe dermale vasculitis aan de distale ledematen. De patiënt werd aangeboden met lethargie, koorts, polydipsie, anorexie en opzetting van de distale ledematen. Op het dermatologisch onderzoek werd partiële alopecia, oedeem en pijn aan alle distale ledematen vastgesteld. Verschillende diagnostische onderzoeken werden uitgevoerd om het vermoeden van dermale vasculitis te bevestigen en een onderliggende oorzaak op te sporen. Op het histologisch onderzoek van de huid werden veranderingen aangetoond die duidden op diepe dermale vasculitis. De andere onderzoeksresultaten wezen geen onderliggende oorzaak voor de dermale vasculitis aan. De diagnose van immunologische, diepe dermale vasculitis werd gesteld. De kat werd behandeld met antibiotica, infuus, nasoesofagale sondevoeding en prednisolone. Verbetering en genezing van de vasculitisletsels werden slechts gezien na het opstarten van de prednisolonetherapie.