bluuebunny/crossref_metadata_2025 huggingface dataset:
Improvement in the Tribological Properties of AISI D2 Die Steel by DLC and WC-C Coatings
Authors: Sivarajan S. , Padmanabhan R. , Kumar Sharma Arun
Published: October 2022

Wear in machineries and parts are one of the major problems encountered in industrial processes. These problems along with corrosion lead to the development of surface engineering techniques that involves applying surface coatings to components to obtain composite material with tribological properties unattainable by base material alone. In the present paper, DLC and WC coatings are produced on AISI D2 steel by Physical Vapor Deposition (PVD).The samples are characterized with tribological test. The applied load is taken as 25 Newton, and sliding velocity as 0.5 m/s. Samples with DLC coatings display less friction and good hardness.
Characterization of P-type Nickel Oxide (NiO) Thin Films Prepared by RF Magnetron Sputtering
Authors: Balakrishnan G. , Velavan R. , Syed Naser S.
Published: October 2022

In the present work, NiO thin films were prepared on glass and silicon substrates by Radio Frequency (RF) magnetron sputtering technique. NiO films are deposited with the argon flow rate of 10 and 20 sccm at room temperature. The 2” NiO target was used for the deposition of NiO films and was characterized using X-Ray Diffraction (XRD), Photoluminescence (PL), UV-Visible spectroscopy and Hall Effect measurement to study the structural, optical and electrical properties of the films. The XRD pattern shows the small intense peak, revealing the nanocrystallinity of the NiO film. The transmittance spectra indicated the high transmittance in the order of ~90%. The photoluminescence studies indicated the bandgap of 3.52 eV. The Hall Effect studies demonstrated the p-type behaviour of NiO films. The film showed the p-type conductivity and hole concentration âˆ¼5.34 x1019 cmâˆ’3 with Hall mobility of âˆ¼612 cm2/V·s for the film deposited at 20 sccm.
Protein Adsorption on Biomaterial Surfaces: Subsequent Conformational and Biological Consequences – A Review
Authors: Mitra Sankar P.
Published: October 2022

Protein adsorption on solid surfaces is an immensely complex event comprising versatile biological and physico-chemical factors. This review focuses to ascertain the nature and biocompatibility of solid matrices essential for the medical needs during prosthetic implantations. It deals with number of important factors; nature of the biomaterial surfaces, the native protein structure, and induced configurational changes during the adsorbed state, andphysico-chemical influences liable for the event. The adsorption process demonstrates that solid surfaces are enabling to alter the protein structure. The conversion of neutral zymogens factor XII, and factor VII (FXII and FVII) to active enzymatic state (FXIIa and FVIIa) initiating the blood coagulation cascade following intrinsic or extrinsic pathway is a prime example regarding the configuration alteration during adsorbed state compared to its nativestate. Additionally, the activation of the complement cascade arises as a result of immune activation due to the adsorbed proteins on solid matrices. It is well known that interfacial tension compels the protein molecules to alter their structure, and is the prime factor behind the configuration transformation. Influences like contact angle, wettability, zeta potential and hydrophobicity along with other inter-aligned forces are involved. It is found that hydrophobic surfaces allow more proteins to bind but fail to activate the coagulation cascade. Contrarily, hydrophilic surfaces despite the feeble adsorption ability impose adequate changes to induce the enzymatic action. The nature of adsorption at the stationary state has been explained following the Gibbs' model of surface excess, Langmuir or any of the equivalent paradigms. But uniqueness in adsorption behavior is noticed in the ‘Vroman effect' while undergoing multiple protein interaction on the solid surfaces. Additionally, the property of cell adhesion heavily relies on the surface matter. Hydrophobicity, surface charge, chemical composition, and topography concertedly play crucial role. Further, prior adsorption of proteins on the adsorbent imposes profound effect on the cell and microbial adhesions which obviously depends on the character of proteins, and cells including the surface chemical composition of the adsorbents. The incident of bio-fouling which often enforces harmful effect arising from various implants is primarily instigated by the adsorption of proteins leading to subsequent invasion prompted by the immune cells. For avoidance, special categories of biomaterials are in the process of manufacturing. Despite having numerous adverse effects, cellular adhesion also shows few beneficial roles, like enhancing the growth of human vein endothelium cells and neurons. The adhesion of bacteria or microorganisms on many solid surfaces induces significantly different effects maintaining their longer survival period.
Removal of Phenolic Compounds from Synthetic Solution and Oil Mill Waste Water by Adsorption onto Nanoparticles Synthesized from Phosphate Rock
Authors: Benaddi Rabia , El harfi Khalifa , Aziz Faissal , Berrekhis Fatima , Ouazzani Naaila
Published: October 2022

In this work, we studied the elimination of phenol compounds from phenolic solutions and Oil Mill Waste Water (OMWW) by adsorption method. The adsorbents used are natural phosphate rock coming from Khouribga phosphate mine (Morocco) and an Apatite synthesized from this phosphate by a dissolution–precipitation reactions. Results obtained showed that the structure of natural phosphate and synthesized apatite are respectively Ca9.55(PO4)4.96F1.96 (CO3)1.283 and (Ca10(OH)2(PO4)6). Synthesized apatite has a higher specific surface than natural phosphate (193.62m2/g). The adsorption study showed that the synthesized apatite can be used as an adsorbent to remove phenol from water with very fast reaction kinetics (about 10 min) and an adsorption capacity equal to 15mg/g. The optimal adsorption capacity was found in low values of temperature and in neutral pH. Adsorption kinetics of phenol solution on the two adsorbents can be described by an equation corresponding to a pseudo second order. Freundlich model fitted well with the adsorption isotherms more than the Langmuir model. Characterization of olive mill wastewater shows that, phenol index equal to 0.39 g/l and chemical oxygen demand COD equal to 158 g/l. The treatment of OMWW by adsorption method on the two adsorbents shows that the use of natural phosphate as adsorbent reduced phenol index by 23% and (COD) by 35% while using synthesized apatite reduced phenol index by 30% and COD by 38%.
Scratch Resistance of High Velocity Oxy-Fuel Sprayed WC-20% Co Coatings Reinforced with Carbon Nanotubes
Authors: Mohammed Thalib Basha G. , Venkateshwarlu B.
Published: October 2022

Tungsten Carbide-20 weight % Cobalt (WC-20 wt% Co) coatings were extensively used material to achieve a combination of extreme hardness and excellent strength. Hence, an effort has been made to improve the toughening properties of WC-Co coatings through reinforcement of Carbon Nano-Tubes (CNTs) using High-Velocity Oxy-Fuel (HVOF) spraying process. In this work, 2 wt%, 4 wt%, and 6 wt% of CNTs were blended by the ball milling process with WC-Co powders. These composed powders were deposited by HVOF process on to the plain mild steel substrates. The scratch test analysis on as-sprayed coatings showed that due to the addition of CNTs on WC-Co coatings, the resistance to penetrate the coating surface increased. Also, by varying the percentage of CNTs in the coating system, the pores were reduced. This phenomenon is attributed to the toughening mechanism by forming a CNT bridge which avoids the formation of internal cracks.
Compressive Strength Evaluation of Nanodiamond/ MWCNT/Graphene Reinforced Novel Hybrid Polymer Nano Composites
Authors: Singh Baljit , Mohanty Akash
Published: October 2022

Because of the inherent brittleness property of monolithic epoxy, it fails to prevent crack propagation and is hence vulnerable to the catastrophic failure. Nano-fillers, such as CNT/Graphene (GnP)/Nanodiamond (NDs) and other carbonaceous materials increase its ability to withstand crack propagation thus its fracture strength propitiously improved. This paper studies compressive properties of MWCNT/GnP/NDs on epoxy based composite material. A static uniaxial compression test was conducted in order to study the effect of these fillers on the compressive stress-strain behaviour of such composites. In this study, the MWCNT/GnP/NDs are added individually as 0.2 wt% and for the hybrid composite, 0.1 wt. % of NDs is added separately along with 0.1 wt% of MWCNT and GnP to the epoxy matrix. The bonding between MWCNT/GnP/NDs with the epoxy matrix is confirmed by microscopic observations. The results showed that the individual addition of 0.2 wt% of MWCNT/GnP/NDs, improves the compressive strength whereas the hybrid composite produced a declining trend. The reverse trend was also observed for the modulus value of the above mentioned composite materials.
Identification and Characterization of whey Protein, Casein Micelles and Fat Globules in Cow Milk
Authors: Murugesan S. , Anitalett J. , Sabitha S.
Published: October 2022

Pasteurized cow milk (whole milk) was used in the present study and also fat was removed from the whole milk to obtain skimmed milk. Whey is the liquid remaining after milk has been curded and strained during the manufacture of cheese. The sample was filtered using a Whatman filter paper to separate the precipitate. The filtrate thus obtained is called whey (devoid of casein and fat). The micrographs of whole milk, skimmed milk and whey were obtained using an inverted phase contrast microscopy. The hydrodynamic size and zeta potential of the samples were obtained using Dynamic light scattering technique. Atomic force microscopy was also performed to understand the surface morphology of whole milk, skimmed milk and whey on mica substrate.
Interfacial Interactions of Monoolein Langmuir Monolayers with Aqueous Salt Solutions
Authors: Dhopte Balaji S. , Lad V. N.
Published: October 2022

Langmuir monolayer is a unique tool to characterize the interface which describes the properties of insoluble monolayer on the sub-phase. Langmuir monolayers have demonstrated the characteristics of many macromolecules as well as amphiphilic molecules at the air-water interface. We evaluated physiochemical characteristics of monoolein lipid Langmuir monolayers on different sub-phases. Interfacial behaviour of monoolein lipid was investigated using Wilhelmy plate pressure sensor technique to generate Langmuir isotherms to explore the effects of interactions with different sub-phases. Various salts alter the surface pressure of the Langmuir monolayer isotherms without the alteration of monolayer phase transitions. The finding of the present work can be effectively used for development of suitable biomedical formulations to offer sufficient strength of coating film with controlled topology and thickness using Langmuir-Blodgett film deposition technique. Addition of the suitable biocompatible ions in to the sub-phase is very crucial for their favourable interfacial interaction with the lipid molecules.
Stakeholders’ Perceptions of the Communication of the Territorial Brand: The Case of Braganca
Authors: Correia Ricardo , Marinho Madalena , Sousa Bruno , Venciute Dominyka
Published: October 2022

Territorial marketing aims to build a long-term strategy to structure and communicate territorial offers and integrates several elements that are essential for successful implementation. The local community, from residents to firms, is a fundamental element in the success of this strategy. This paper analyzes the perceptions of different stakeholders regarding their involvement in the strategic process of marketing the municipality of Bragança (a historical municipality in the northeast of Portugal) as a tourist destination. This study employed a mixed methods methodology. In the first part (qualitative analysis), interviews were carried out with the different competent bodies in the promotion and communication of the destination and with the county’s tourist entities. In the second phase (quantitative analysis), questionnaire surveys were conducted in the local community to complement the first part of the methodology. The results show little involvement of tourism entities in the construction and communication of the destination, as well as some gaps in identification with the destination. These results reinforce and justify the importance of the local community in marketing territories (which is fundamental), as well as the construction of a set of recommendations aimed at solving some of the problems found through the adopted methodology.
Teamwork Skills Education in Themed Role-Playing Games in Preschool
Authors: Yen Tran Thi Kim , Nho Hoang Thi , Huyen Nguyen Thi Thanh
Published: October 2022

This study aimed to investigate the current state of education on the development of children's cooperative abilities via the use of themed role-playing games in Dak Lak, Vietnam. The period between March through June 2019 was devoted to administering an online survey for data collection. The findings indicate that preschools have devoted attention, effort, intellect, and time to developing primary students' collaboration abilities. Despite this, the findings are still relatively low and do not reflect the proportional number of participants. The youngsters aged 5 to 6 years old have shown that the measures benefit their ability to collaborate with others. The youngsters are more engaged in the activity, taking the initiative, and showing enthusiasm for interacting with one another. The experimental and control groups were quite different regarding their ability to collaborate effectively. In comparison to the youngsters in the control group, those in the experimental group demonstrated superior collaboration skills on a more consistent and regular basis.
Enhancing Student-Teachers Assessment Skills: A Self-and Peer-Assessment Tool in Higher Education
Authors: Dahal Niroj , Luitel Bal Chandra , Pant Binod Prasad , Rajbanshi Roshani
Published: October 2022

This study used a self-and peer-assessment activity in Moodle, a learning management system, to investigate the self-and peer-assessment abilities of student-teachers. To enhance self- and peer-assessment in some author-taught courses, students submitted online texts graded by their peers using a grading scale determined by course facilitators as a rubric or aspects approved by course facilitators. This study aimed to design and investigate self-, and peer-assessment activities among 18 students (10 boys and 8 girls) enrolled in one of Kathmandu University Schools of Education’s MPhil/Ph.D. program in STEAM (Science, Technology, Engineering, Arts and Mathematics) in Nepal in 2021. The objective was to identify the most effective strategies for involving student-teachers in the learning and assessment processes using self- and peer-assessment as a learning and assessment tool using action research as a research methodology. This study followed the procedures of planning, intervening, evaluating effectiveness, and sharing learning processes within the action research framework. In order to achieve the research objectives, this article discussed some of the Workshop activity’s key strengths and applications within cognitive and constructivist theoretical frameworks, among others. The article concluded by outlining the key advantages of self-and peer assessment in increasing student engagement and improving higher-order skills. These are analytical, and evaluation skills developed through the process of grading self- and peer submissions on a variety of criteria (aspects). The findings show that students are responsible for learning, have metacognitive skills, and use a dialogical, shared teaching and learning model. For higher education, it is a useful tool for self-and peer- assessment.
La adquisición de la conciencia ecologista a través de la visión del arte actual: análisis de casos y propuestas educativas
Authors: MORAL RUIZ CARMEN , LUQUE RODRIGO LAURA
Published: October 2022

La preocupación actual por la sostenibilidad y el medio ambiente, crece en la sociedad y se refleja en el ámbito artístico. En 2015 la Organización de Naciones Unidas (ONU) elaboró unos objetivos de desarrollo sostenible en los que se hacía hincapié en la protección de los ecosistemas y en acciones orientadas a mejorar la situación del cambio climático, entre otros puntos. A través de esta aportación se pretende visibilizar las propuestas de concienciación que se elaboran desde el campo artístico, vinculando al colectivo de artistas y sus creaciones con el ámbito educativo para la realización de iniciativas para la sensibilización hacia el ecologismo. Estas propuestas educativas, susceptibles de ser implantadas en diversos niveles educativos, pueden servir de reflexión para ayudar a la juventud a tener una conciencia ecologista, a ser críticos y reflexivos y a consumir y vivir de forma responsable con el planeta.

palabras clave: conciencia ecologista, educación artística, arte actual, ecoartivismo, arte ecológico.
Festival de la Lira y la Pluma Lojanas (1963-1977)
Authors: PARDO FRÍAS VERÓNICA F.
Published: October 2022

El presente artículo tiene por objetivo la reconstrucción del Festival de la Lira y la Pluma Lojanas desde la música y sus protagonistas, con énfasis en la categoría de composición y como esta incidió en el aporte al desarrollo cultural de Loja. A partir de las fuentes primarias inéditas tomadas del archivo familiar Tabango-Espinoza y de algunas partituras halladas en la Biblioteca del Colegio de Artes “Salvador Bustamante Celi” de la ciudad de Loja se plantea la reflexión en torno al evento y su repercusión como hecho social que involucra a los miembros de una comunidad, quienes comparten esta trayectoria histórica musical como parte de su identidad cultural lojana.

Palabras clave:  Escenas Musicales, Antropología Musical, Archivo, Loja.
La sostenibilidad antropológica y sociológica del color en la Moda española a principios del siglo XXI
Authors: AGUILAR-NUEVO ROCÍO , CAMPOS SÁNCHEZ ANTONIO , KAYSER MATA MARÍA ISABEL
Published: October 2022

El color, como parte de la vida en sociedad, se convierte en muchas ocasiones en un índice cultural. El concepto de la sostenibilidad del color se basa en una idea transdisciplinar que abarca tanto la vertiente ecológica como la antropológica, la sociológica o la económica, para comprender cómo sobreviven ciertos colores, y por qué otros desaparecen.

En la manufactura textil, el color adquiere significancia de comunidad, por ejemplo, en las banderas o en las equipaciones de ciertos equipos deportivos. En la Moda, el color se ha convertido en un indicador de identidad y pertenencia, sobreviviendo a siluetas y tejidos.

Este artículo aborda una reflexión teórico-metodológica sobre los colores identitarios del streetstyle español a principios del siglo XXI, mapeando las prácticas sociales que influencian en la durabilidad, desde el porqué de la resiliencia de algunos de estos colores, hasta el peligro de extinción al que se enfrentan otros.

PALABRAS CLAVE: Color, sostenibilidad antropológica, Moda contemporánea, conservación, extinción.
Los procesos de creación contemporánea como referentes socioculturales
Authors: SERRANO-TAFALLA RAQUEL , BERNAL-PÉREZ MARÍA DEL MAR
Published: October 2022

Este artículo plantea una reflexión sobre el proceso de creación contemporánea como factor de conexión entre el arte y la sociedad. Desde el siglo XX, tras los acontecimientos históricos, sociales y económicos en el contexto de las vanguardias, los creadores han realizado un progresivo énfasis en la importancia de acercar al público su metodología de trabajo. A partir de esta consideración inicial, se plantea como objetivo, la revisión crítica de las distintas facetas socioculturales del arte contemporáneo.

Palabras clave: Arte contemporáneo, Sociedad, Comunicación, Proceso creativo, Experimentación.
Identificación de rizobacterias aisladas de Tagetes coronopifolia y Tagetes terniflora (Cempasúchitl) y evaluación de su capacidad inhibitoria in vitro de microorganismos fitopatógenos
Authors: Castillo-Ortega Laura Sofía , Mercado-Flores Yuridia , Téllez-Jurado Alejandro , Anducho-Reyes Miguel Angel
Published: October 2022

El género Tagetes, es un grupo de plantas conocidas comúnmente como cempasúchil o flor del muerto, las cuales, son reconocidas principalmente por su uso en la industria alimentaria, horticultura ornamental, terapéutico herbolario y cultural. Tagetes coronopifolia y terniflora, son dos plantas de este género, empleadas en la rotación de cultivos para el control de nemátodos fitopatógenos. En este trabajo se realizó el aislamiento de 581 cepas a partir de muestras de suelo rizosférico, suelo adherido a la raíz y el interior de la raíz a los 30, 60, 90 y 120 días de crecimiento, en cultivos de invernadero. Del total de cepas de rizobacterias aisladas, 22 presentaron actividad antagónica a Fusarium sp. y 53 a Stenocarpella maydis, ambos. hongos patógenos de maíz, mientras que 37 cepas mostraron antagonismo a la bacteria fitopatógena Clavibacter michiganensis subsp michiganensis. De acuerdo con el porcentaje de inhibición de los patógenos en estudio, se seleccionaron 10 rizobacterias para su identificaron molecular utilizando un fragmento de aproximadamente 1484 pb del gen 16SrDNA. El análisis de similitud utilizando la herramienta BLAST del NCBI, arrojó como resultado que las rizobacterias pertenecen a los géneros Bacillus y Pseudomonas, géneros utilizados como agentes de biocontrol.
Obrazowanie przestrzeni porowej skał o zróżnicowanej litologii metodą tomografii rentgenowskiej
Authors:   Instytut Nafty i Gazu – Państwowy Instytut Badawczy, Drabik Katarzyna , Przelaskowska Anna ,   Instytut Nafty i Gazu – Państwowy Instytut Badawczy, Skupio Rafał ,   Instytut Nafty i Gazu - Państwowy Instytut Badawczy, Kubik Benedykt ,   Instytut Nafty i Gazu - Państwowy Instytut Badawczy
Published: October 2022

W ostatnich latach obserwuje się dynamiczny rozwój laboratoryjnych metod nieniszczących przeznaczonych do badań własności skał. Należy do nich metoda rentgenowskiej tomografii komputerowej (CT), dająca możliwość wizualizacji wewnętrznej przestrzeni porowej skał bez naruszenia ich struktury. W pracy pokazano zastosowanie metody CT w skałach charakteryzujących się znacznym zróżnicowaniem przestrzeni porowej. Zmienność ta związana jest z występowaniem dużej ilości nieregularnie rozmieszczonych porów i kawern oraz szczelin o różnym stopniu wypełnienia. W ramach pracy wykonano obrazowanie przestrzeni porowej wraz z podziałem na porowatość szczelinową i kawernistą dla wybranych fragmentów rdzeni obejmujących wapienie, anhydryty i zlepieńce. Badania przeprowadzono z rozdzielczością 0,130 mm. Na ich podstawie uzyskano wartości porowatości dla metrowych odcinków rdzeni wiertniczych oraz dla wybranych fragmentów rdzenia. W przypadku anhydrytu podział na porowatość związaną z porami (0,18%) i porowatość kawernistą (0,26%) świadczy o stosunkowo dużej zawartości większych pustek w skale, co prawdopodobnie jest związane z rozpuszczaniem soli. Analiza dwóch fragmentów rdzenia wapienia uwidoczniła dużą zmienność struktury przestrzeni porowej. Na porowatość górnego fragmentu składa się, w największym stopniu, porowatość związana z drobnymi pustkami (1,79%). Porowatość pochodząca od kawern to 1,09%, natomiast porowatość szczelinowa stanowi najmniejszy procent porowatości całkowitej i wynosi 0,41%. Porowatość dolnego fragmentu rdzenia jest znacznie niższa. Składają się na nią głównie pory (0,42%) oraz w mniejszym stopniu kawerny (0,25%), natomiast porowatość szczelinowa stanowi zaledwie 0,05%. Porowatość zlepieńca jest bardzo niska (0,29%) i obejmuje głównie drobne pory i kawerny. Zastosowana metoda rentgenowskiej tomografii komputerowej pozwoliła na rozszerzenie charakterystyki przestrzeni porowej w badanych skałach i otrzymanie pełniejszej informacji na temat rozkładu porów, kawern i szczelin w rdzeniach.
Badania emisji hałasu do środowiska przez pracujące urządzenia wiertnicze zgodnie z wymaganiami PN i UE
Authors:   Instytut Nafty i Gazu – Państwowy Instytut Badawczy, Buczek Janusz , Balawajder Zbigniew ,   Instytut Nafty i Gazu – Państwowy Instytut Badawczy, Kwilosz Tadeusz ,   Instytut Nafty i Gazu - Państwowy Instytut Badawczy
Published: October 2022

Wierceniu otworów w górnictwie naftowym towarzyszy emisja hałasu wytwarzanego przez urządzenia wiertnicze. Proces wykonywania otworu wiertniczego, na który składają się operacje wiercenia, zapuszczania i wyciągania kolumny przewodu wiertniczego oraz prace pomocnicze podzespołów urządzenia wiertniczego, pomp płuczkowych, agregatów prądotwórczych i urządzeń pomocniczych, wywiera znaczny wpływ na kształtowanie się poziomu hałasu w otoczeniu wiertni. W artykule przedstawiono zagadnienia dotyczące hałasu w środowisku wiertni oraz rozkład poziomu hałasu w środowisku otaczającym urządzenie wiertnicze. Wykonano pilotowe badania hałasu podczas pracy urządzenia wiertniczego typu Bentec EURO RIG 450 na wiertni X. Wyniki pomiarów przedstawiono w tabelach oraz na mapie rozkładu poziomu hałasu w otoczeniu wiertni. Do badań użyto zestawu aparatury pomiarowej posiadającej aktualne świadectwa wzorcowania. Pomiary wykonano według odpowiednich procedur w czterech kierunkach co 90° w odległości 50 m, 100 m, 200 m, 400 m oraz w sąsiedztwie budynków mieszkalnych. Do generowania przestrzennych rozkładów poziomu hałasu użyto metod geostatycznej analizy danych. Zastosowano metodę krigingu bazującego na wartościach zmierzonych w punktach pomiarowych oraz parametrach przestrzennego rozkładu takich jak korelacja i wariancja. Mając wygenerowaną mapę rozkładu poziomu hałasu w postaci wartości na siatce modelu, można dokonać kwalifikacji punktów siatki, w których poziom hałasu jest dopuszczalny lub przekroczony. Jakość wykonywanych pomiarów na urządzeniu wiertniczym w czasie operacji wiertniczych ma decydujące znaczenie dla analizy zagrożeń hałasem. Opracowano program obliczeniowy pozwalający na szybką analizę wprowadzonych danych. Arkusz pozwala w prosty i szybki sposób wyliczyć podstawowe parametry oceny hałasu oraz oszacowania niepewności uzyskanych wyników. Wszystkie formuły zastosowane w algorytmach makra obliczeniowego arkusza są zgodne z aktualnie obowiązującymi normami. Biorąc pod uwagę postęp techniczny i zastosowanie środków zmniejszających hałas w projektowaniu urządzeń wiertniczych, zagrożenia wynikające z emisji hałasu powinny być zmniejszane, w szczególności u źródła.
Badania możliwości powtórnego wykorzystania surowców odpadowych powstających w trakcie produkcji świec
Authors:   Instytut Nafty i Gazu – Państwowy Instytut Badawczy, Antosz Artur , Ptak Stefan ,   Instytut Nafty i Gazu – Państwowy Instytut Badawczy
Published: October 2022

W artykule omówiono dostępne surowce do komponowania mas palnych do produkcji świec, poczynając od różnego rodzaju wosków przez oleje roślinne po utwardzone oleje roślinne, oraz przedstawiono badania nad odbarwianiem i odwanianiem odpadowych mas palnych metodą rafinacji adsorpcyjnej ziemią odbarwiającą i węglem aktywnym. W procesach tych wykorzystywana jest zdolność glin naturalnych, glinokrzemianów syntetycznych, żelu glinowego, węgla aktywnego i innych substancji do adsorbowania na swojej powierzchni niektórych składników i zanieczyszczeń. Procesy rafinacji adsorpcyjnej ziemią bielącą i węglem aktywnym przeprowadzono dla wszystkich badanych surowców. Zrealizowano pięć procesów rafinacji adsorpcyjnej przy różnych parametrach temperaturowych przebiegu rafinacji z różnymi ilościami dozowania sorbentów. Procesy rafinacji ziemią bielącą prowadzono w dwóch stopniach. Następnie próbki oczyszczanych mas palnych zostały poddane ocenie wizualnej, zapachowej oraz zostały oznaczone wybrane podstawowe właściwości fizykochemiczne charakteryzujące masy palne do produkcji świec. Najlepsze efekty uzyskano w przypadku procesu rafinacji numer V, podczas którego zastosowano dozowanie ziemi bielącej na poziomie 4% (m/m) i 2% (m/m) węgla aktywnego, w temperaturze 130°C. W wyniku procesu o powyższych parametrach otrzymano po pierwszym stopniu biały kolor w próbce pomarańczowej i bardzo jasnożółty w próbce zielonej. Próbka koloru czerwonego zmieniła kolor na pasteloworóżowy. Po drugim stopniu rafinacji próbka pomarańczowa była śnieżnobiała, a próbka zielona została odbarwiona do koloru białego. Próbki pomarańczowa i zielona miały bardzo słaby zapach, natomiast próbka czerwona wykazywała zapach na poziomie słabym. Proces rafinacji adsorpcyjnej oprócz działania odbarwiającego pozwalał również na znaczne pozbycie się substancji zapachowych obecnych w badanych próbkach. Najtrudniejsza do odbarwienia okazała się próbka o kolorze czerwonym, z równie trudnym do usunięcia aromatem kwiatów róży. Przeprowadzone badania pozwoliły na potwierdzenie bardzo dużego potencjału do odbarwiania i odwaniania odpadowych mas palnych metodą rafinacji adsorpcyjnej ziemią odbarwiającą i węglem aktywnym.
Paliwa opałowe przyszłości – badania kotła centralnego ogrzewania zasilanego alkoholem etylowym
Authors:   Instytut Nafty i Gazu – Państwowy Instytut Badawczy, Basiura Maciej , Rataj Mateusz ,   Instytut Nafty i Gazu – Państwowy Instytut Badawczy
Published: October 2022

W pierwszej części opisano prace badawcze podejmowane w Instytucie Nafty i Gazu – Państwowym Instytucie Badawczym w związku ze stopniowym odchodzeniem rozwiniętych gospodarek światowych od paliw kopalnych. Przedstawiono prace dotyczące zagospodarowania biogazu rolniczego oraz jego mieszanek z wysokometanowym gazem ziemnym i LPG na potrzeby zasilania urządzeń gazowych do użytku domowego oraz przemysłowych urządzeń gazowych. Opisano również trwające badania nad wykorzystaniem wodoru jako medium umożliwiającego zagospodarowanie i magazynowanie nadwyżek energii elektrycznej z odnawialnych źródeł energii (ang. power to gas, P2G). Prace te skupiają się na bezpieczeństwie użytkowania mieszanin wodoru z wysokometanowym gazem ziemnym, a także na wpływie domieszek wodoru na wszystkie elementy systemu przesyłowego. Przedstawiono także prace dla sektora transportu opisujące wykorzystanie bioetanolu jako dodatku do benzyn lub oleju napędowego. Pozwala to na zmniejszenie zużycia stosowanych paliw konwencjonalnych również w transporcie. Zaprezentowano też analizy, na podstawie których stwierdzono możliwość wykorzystania alkoholu etylowego jako paliwa opałowego do urządzeń grzewczych. W celu potwierdzenia wyników tych analiz przeprowadzono badania kotła centralnego ogrzewania wyposażonego w olejowy palnik nadmuchowy. Kocioł c.o. przebadano w cyklu badawczym, podczas którego temperatura wody zasilającej instalację c.o. wynosi 80°C, a temperatura wody wracającej do kotła – 60°C. W takich warunkach pracy urządzenia zmierzono parametry energetyczne kotła, tj. sprawność i obciążenie cieplne, oraz zmierzono ilość produkowanego kondensatu. Badania przeprowadzono, używając do zasilania kotła lekkiego oleju opałowego oraz alkoholu etylowego technicznego 96-procentowego. Na tej podstawie wyciągnięto następujące wnioski: obciążenie cieplne osiągane przez układ grzewczy uległo zmniejszeniu pomimo regulacji dostępnych parametrów urządzenia (ciśnienie na palniku oraz ilość powietrza do spalania); sprawność urządzenia nie uległa pogorszeniu; zawartość substancji niepożądanych w spalinach uległa obniżeniu; ilość produkowanego kondensatu w palniku zasilanym alkoholem etylowym uległa zwiększeniu względem tego samego palnika pracującego na oleju opałowym. W końcowej części usystematyzowano i przedstawiono wnioski z przeprowadzonych badań.
Basic Deliberation on Possibility of Fostering Primary English Language Learners' Intercultural Communicative Competence in Curriculum
Authors:   Global Studeis Education Association, Kim Jin-Seok , Jang Eun-Suk
Published: October 2022

This study aims to deliberate on possibility of fostering primary English language learners' intercultural communicative competence (ICC) composed of communication competence and intercultural competence in curriculum. To achieve the purpose, the framework of the 2015 English National Curriculum was analysed in terms of ICC.
The findings are as follows: (1) There are cultural objectives closely related to ICC. (2) The contents such as attitudes, knowledge, skills, and implement force aren't presented for improving their intercultural competences, although there are the topics related to ICC in the content of the curriculum. (3) There are not any accomplishment standards directly related to both communication competence and intercultural competence of ICC. (4) Teaching-learning methods need to be presented based on cognitive and affective levels of primary English language learners in detail according to grade clusters. (5) There are not any assessment methods directly related to ICC. From the findings, it was suggested that the objectives, the contents, the accomplishment standards, and the teaching-learning and assessing methods related to ICC should be established explicitly in the curriculum for primary English language learners.
Asessment of Vehicle Maintenance Culture and Its Cost Effectiveness: Case of University for Development Studies
Authors: Seniwoliba Joseph Attiah
Published: October 2022

The study assessed the maintenance culture of vehicles and the associated costs in the University for Development Studies at the Central Administration, Tamale Campus in order to provide solutions to maintenance problems facing the University with the associated high cost of maintenance. The study considered all 55 vehicles and drivers at the Central Administration used by various offices, directorates and general use (pool). However, data on 34 vehicles were available which is far more than the needed representation. Ten drivers were sampled to participate in the study using the simple random sampling approach. Face-to-face interviews with one-on-one respondents were conducted with the selected drivers. The researcher used open ended questions to gather relevant data from the respondents. The secondary data was obtained from mechanics and technicians who had presented their bills for payment at the Transport Office. Both the qualitative and quantitative methods were used in analyzing the data collected. The Grounded Theory and excel sheets were employed for the data analysis. The study revealed that that the poor maintenance culture is as a result of poor funding, delay in the release of funds for maintenance, inflation of the cost of spare parts, design errors, use of sub-standard materials, age of vehicles, insufficient knowledge and skills of mechanics and technicians were factors identified as those contributing to problems of effective maintenance culture. It is therefore recommended that a formalized maintenance department should be established with well qualified and experienced personnel with practical knowledge and skills in vehicle maintenance and with a well-equipped workshop with the necessary tools and spare parts. This will allow fast and quick response to vehicle maintenance issues.
A PRESENÇA DA BIBLIOTECA E SUA IMPORTÂNCIA PARA O DESENVOLVIMENTO DA LITERATURA INFANTIL NO SÉCULO XXI
Authors: Schmitt Coutinho Marco Túlio
Published: October 2022

O presente artigo tem como tema principal a importância da biblioteca e sua ligação com o desenvolvimento da literatura infantil. Investiga as suas principais características no século XXI e alguns métodos de incentivo à leitura, situando o significado da linguagem no mundo e narrando brevemente o seu contexto histórico. Por meio da pesquisa bibliográfica, reúne as ideias de diversos autores, fazendo uma análise sobre a leitura; os livros infantis; os espaços de interação e mediação; as atividades e as possibilidades de envolvimento das crianças com a literatura na biblioteca, na escola em casa ou lugares propícios. Destaca a importância da poesia e dos jogos de palavras na formação do leitor.
OS EMBALOS DA MÚSICA COMO LAZER
Authors: Kohlrausch Estela , Doll Johannes
Published: October 2022

Este texto segue os embalos da música como lazer e o refrão da canção nos lembra: nós estamos sobrevivendo (we're stayin' alive). Partimos de algumas palavras geradoras para construir relações, formando tríades, enarmonias e ritmos para compor esta escrita. Os dados analisados para desenvolver reflexões sobre envelhecimento, música e lazer são provenientes da pesquisa Envelhecimento e música: o lazer sério em narrativas de amadores/as (KOHLRAUSCH, 2021). A base teórica utilizada foi a Perspectiva do Lazer Sério. A música como lazer sério pode ajudar a encarar os desafios da vida (e do envelhecimento) trazendo benefícios duráveis.
On the Problems of Modern Education. II. Learning Technologies
Authors:   Kotelnikov Institute of Radio Engineering and Electronics (IRE) of Russian Academy of Science, Kuznetsov Nikolay A. , Zholkov (Jolkov) Sergei Yu. ,   National University of Oil and Gas “Gubkin University”
Published: October 2022

The article examines the fundamental provisions of the main regulators of the educational process: the Federal Law on Education in the Russian Federation No. 273-ФЗ of December 29, 2012 and the Federal State Educational Standard of Secondary General Education — Order No. 413 of May 17, 2012 (with subsequent changes). The necessity of their significant adjustment is substantiated. The ideas put into the educational process by the Ministry of Education and Science of the Russian Federation during the reforms of 2004–2012 and the explanations of A. Fursenko (at that time the Minister) are discussed. The positive and negative aspects of the USE are considered. The demands to abandon grades, exams and homework are analyzed, and a dangerous movement towards general dilettantism is pointed out. Problems in the process of moving away from the Bologna system of higher education and the position of the Ministry of Science and Education of the Russian Federation and Minister V. Falkov are discussed. Problems with textbooks and teaching methods are noted. The “subject-targeted” education model is considered, as well as the “cognitive-roleplay” form of education, implemented in the USSR. It is noted that we have a unique opportunity to make a modern shift to critical and analytical thinking instead of dogmatic, as the giants of the Renaissance did in their time.
Social and Ethical Aspects of the Unified State Exam and the Bologna System (Using the Example of Higher Medical Education)
Authors:   Moscow State University of Medicine and Dentistry n.a. A.I. Evdokimov, Zorin Konstantin V.
Published: October 2022

The author analyzes the social and ethical problems of doctor education related to the Unified State Examination and the Bologna system. The following research methods were used in the work: study and analysis of the professional literature, synthesis, modeling, comparison, generalization, observation, system analysis and theoretical knowledge. It was concluded that the USE and the Bologna system led to a decrease in the quality of higher medical education and an increase in the number of diagnostic, therapeutic and ethical-deontological errors. The dissatisfaction of the population with the practice of providing medical care has also increased. The article contains a number of social and ethical recommendations that should be kept in mind when creating a national system of medical education.
A Study of the Value-Semantic Foundations of the Pedagogical Activity of a Modern Teacher (Gender Aspect)
Authors:   Yaroslavl State Pedagogical University named after K.D. Ushinsky, Solynin Nikita E.
Published: October 2022

The article notes that there is a problem of gender imbalance in the professional sphere everywhere, including in teacher training. At the same time, it is indicated that there are different indicators of the effectiveness of female teachers and male teachers. In addition, there are different ideas about the expectations of the profession for men and women. Based on this, the purpose of the article is to determine the value-semantic foundations of the pedagogical activity of a modern teacher (men and women). For this purpose, a questionnaire was used to identify the most important value orientations associated with the target objects - the child, the educational environment and the teaching profession. It is established that there are differences in the value-semantic bases of activity: female teachers are more focused on interaction with colleagues, parents and other specialists; they strive to apply various methods in the learning process, while male teachers are more interested in organizing the learning process and managing it.
Development and experimental verification of search and rescue ROV
Authors: Sun Bing , Pang Wen , Chen Mingzhi , Zhu Daqi
Published: October 2022

This paper presents the design of a new type of search and rescue remotely operated vehicle (ROV) system. The goal is to achieve the underwater target search and detection and small target capture and rescue operation requirements. First, the overall design of the whole underwater surface system and the layout design of the propulsion system are given. On this basis, the ROV frame structure, electronic cabin, and power cabin are designed and analyzed. To accomplish the grasping task, a grasping hand is designed based on a multifunctional manipulator to achieve underwater grasping. To make the ROV more intelligent, different kinds of underwater object detection and tracking methods are adopted and analyzed. Finally, it was tested in a pool and the sea to verify the reliability and stability of the designed search and rescue ROV.
The political participation of youth in Mozambique’s 2019 general eletions
Authors: Tsandzana Dércio
Published: October 2022

This article discusses the political participation of youth in Mozambique’s electoral processes, specifically the 2019 general elections. The results were obtained through interaction (semi-structured interviews) with young members and institutional representatives from four political parties, who explained their views on youth and political participation during elections. The interviews were conducted between April and September 2021 through virtual platforms. We also carried out a detailed analysis of the manifestos of three political parties. The study finds that Mozambican political parties do not have a clear vision of young people’s aspirations, since the definition of the ‘youth problem’ is dominated by adults. In addition, young people’s issues have been generalised without considering the specific concept of what it means to be young. However, in order to maintain the social and economic benefits provided by their political parties, the same young people assume that adults continue to be an example to follow in guiding the destiny of the country.
A Unified Field Theory Derived from a Magnetic Confinement Method that Stimulates Curvature Upon Charged Particles Relative to a Solitary Location that Produces Energy from Particle Deviation
Authors: Moss Samuel
Published: October 2022

This interdisciplinary work presents a novel patent pending method of inertial electrostatic confinement (IEC) fusion called the Nuclear Electromagnetic Shaping Accelerator Reactor (NESAR) that addresses all of the major failure problems with currently known methods of IEC fusion. A brief background of previous IEC methods that generate a negative potential well to accelerate ions for fusion will be reviewed and compared to the NESAR method of magnetic confinement. In addition, a direct comparison will be presented between the NESAR and the tokamak method of fusion. The NESAR method of fusion obtains the plasma oscillation and compression capabilities of a tokamak without producing the catastrophic magnetic reconnection disruptions that currently plague tokamaks. Since the NESAR can oscillate charged particles comparable to the tokamak, this work will briefly review the history of the tokamak, how sawtooth magnetic reconnection occurs, and how the NESAR precludes the occurrence of magnetic reconnection. This work will also review the beginnings of a novel theory that has obtained interest from the Defense Advanced Research Projects Agency (DARPA) which is currently interested in possibly supporting further research into the NESAR to explore this new theoretical concept. This novel theory is a unified field theory based upon the trajectory of charged particle movements within the NESAR. The NESAR is the only concept of magnetic confinement in the world that may have the capability to allow charge particles to collectively interact relatively to a solitary location. Due to this possible capability, there is a probability that the confined particles may experience curved trajectories that could allow them to experience the effects of curvature deviation. If curvature deviation occurs with these magnetically confined charged particles; then the deviated acceleration would allow for the electromagnet field to be propelled to a higher dimension that could influence spacetime. Finally, this work will review another theory that explains how pole reversals are observed by the National Aeronautics and Space Administration’s (NASA) coiled magnetic field detectors. This theory requires little to no postulations to be framed and it is purely based upon the trajectory of charged particles within the NESAR, Michael Faraday’s law of induction, and experimental observations of rotating plasmas.
Chronic Positive Mass Balance is the Actual Etiology of Obesity: A Living Review
Authors: Manninen Anssi
Published: October 2022

It is widely assumed that the fundamental cause of obesity is an energy imbalance between calories consumed and calories expended (i.e., the energy balance theory; EBT). However, this century-old obesity paradigm must be fallacious. According to known laws of physics, chronic positive mass balance is the actual etiology of obesity, not positive energy balance. The relevant physical law in terms of body mass regulation is the Law of Conservation of Mass, not the Law of Conservation of Energy. It is important to understand that energy balance and mass balance are separate balances in the human body. Calories represent the heat release upon food oxidation, and as such, calories have no impact on body mass. Body mass can only change due to net mass flow; thus, the only food property that can augment body mass is its nutrient mass, not its energy content. A recently proposed mass balance model (MBM) describes the temporal evolution of body weight and body composition under a wide variety of feeding experiments, and it seems to provide a highly accurate description of the very best experimental human feeding data. By shifting to a mass balance paradigm of obesity, a deeper understanding of this disease may follow in the near future. The purpose of this living review is to present the core issues of the upcoming paradigm shift as well as some practical applications related to the topic.
Pyroelectric and Piezoelectric Voltage Coefficients of Blue Luminescent Organic Lead-Free Perovskite MDABCO-NH4I3 Electrospun Nanofibers
Authors: Baptista Rosa M. F. , Moreira Gonçalo , Silva Bruna , Oliveira João , Almeida Bernardo , Castro Cidália , Rodrigues Pedro V. , Machado Ana , Belsley Michael , De Matos Gomes Etelvina
Published: October 2022

Lead-free ferroelectric perovskite N-methyl-N'-diazabicyclo[2.2.2]octonium)–ammonium triio-dide, MDABCO-NH4I3, nanocrystals are embedded in three different polymer fibers fabricated by the electrospinning technique. The nanofibers, which are very flexible and have a high Young modulus, behave as active piezoelectric energy harvesting sources that produce a piezoelectric voltage coefficient up to geff = 3.6 VmN-1 and show a blue intense luminescence band at 325 nm. In this work, the pyroelectric coefficient is reported for the MDABCO-NH4I3 perovskite inserted in electrospun fibers. At the ferroelectric-paraelectric phase transition, the embedded nanocrystals display a pyroelectric coefficient as high as 194×10-6 Cm-2k-1, within the same order of magnitude as that reported for the state-of-the-art bulk ferroelectric triglycine sulfate (TGS). The perovskite nanocrystals embedded into the polymer fibers remain stable, and no degradation is caused by oxidation.