bluuebunny/crossref_metadata_2025_split huggingface dataset:
Thin and Dense Ceramic Coatings by Plasma Spraying at Very Low Pressure
Authors: Mauer G. , Vaßen R. , Stöver D. 
Published: December 2022

Abstract
Very low pressure plasma spraying (VLPPS) processes operate at a pressure of approximately 100 Pa, where the interaction of the plasma jet with the surrounding atmosphere is very weak and, as a result, plasma velocity is almost constant over a long distance from the nozzle exit. At these low pressures, the collision frequency is distinctly reduced and the mean free path is strongly increased. As a consequence, the specific enthalpy of the plasma is substantially higher, but at lower density. These particular plasma characteristics offer enhanced possibilities to spray thin and dense ceramics compared to conventional processes which operate in the pressure range between 5 and 20 kPa. This paper presents examples of gas-tight and electrically insulating layers with thicknesses less than 50 μm for solid oxide fuel cell applications. Plasma spraying of oxygen conducting membrane materials like perovskite is also discussed.
Microstructure and Mechanical Properties of Flame-Sprayed PEEK Coating Remelted by Laser Process
Authors: Zhang C. , Liao H. , Costil S. , Coddet C. , Zhang G. 
Published: December 2022

Abstract
In this investigation, flame spraying is used to deposit polyether ether ketone (PEEK) layers on stainless steel substrates and CO2 and Nd:YAG laser remelting treatments are performed to densify the deposited material. Microstructural analysis of the as-sprayed and remelted coatings shows that both lasers are suitable for densifying PEEK polymer layers on stainless steel and that the resulting crystalline structure depends on laser processing parameters. Hardness measurements and tribological and scratch tests are also carried out and the results are correlated with microstructure.
Study of the Splat-Substrate Interface for a PEEK Coating Plasma-Sprayed onto Aluminum Substrates
Authors: Wu J. , Munroe P.R. , Withy B. , Hyland M.M. 
Published: December 2022

Abstract
In this study, single splats of polyether ether ketone were plasma sprayed onto aluminum substrates that had been boiled, etched, or polished and then thermally treated, except for one etched substrate, to remove water from the surface. Splat morphology was viewed in a scanning electron microscope and splat-substrate interfaces were examined using TEM and focused ion beam imaging. The results show that PEEK splats have a poor level of contact on aluminum substrates that were boiled and those that were etched but not thermally treated. In contrast, specimens that had undergone thermal treatment to minimize the presence of water on the substrate surface exhibited high levels of contact at the splat-substrate interface with significantly less porosity.
Influence of Powder Structure on the Micro-Hardness and Fracture Toughness of Cold-Sprayed WC-12Co Deposit
Authors: Gao P.-H. , Yang G.-J. , Li C.-J. , Li C.-X. 
Published: December 2022

Abstract
In this study, WC-12Co powders with multimodal-sized WC particles were prepared by ball milling and deposited onto stainless steel substrates by cold spraying. Microhardness and fracture toughness were measured on cross-sections by the indentation approach. Coatings produced from powders with small carbide particles, resulting from long milling times, were found to exhibit high microhardness and high fracture toughness. Deposits sprayed with high porosity powders produced by cold compaction had low microhardness, but high fracture toughness.
Development of Thermal Spray Coatings with Corrosion Protection and Antifouling Properties
Authors: Murakami K. , Shimada M. 
Published: December 2022

Abstract
In this investigation, aluminum-copper, aluminum-zinc, and zinc coatings were flame sprayed onto a sand-blasted mild steel substrate. The coatings were immersed in seawater and were examined on a monthly basis using EDS and XRD analysis to assess corrosion and marine fouling behaviors. The spraying and test procedures are described and the results are presented and discussed. Zinc and aluminum-zinc coatings with high zinc content proved to have good anti-corrosion and anti-fouling properties, but the aluminum-copper coatings did not.
Cooling in Thermal Spraying – CO2 and Its Advantages
Authors: Kroemmer W. , Heinrich P. 
Published: December 2022

Abstract
Advances in thermal spraying are occurring in two general directions. On the one hand, spray processes are becoming colder, facilitating the production of oxide-free coatings in air atmospheres. On the other hand, new systems are being developed that enable higher powder throughput, thus making production faster and more efficient. In order to lock in these time-saving advantages, more and more applications are using CO2 as a cooling medium to increase cooling efficiency and optimize spraying processes. This paper provides an overview of the use of CO2 and its suitability for new applications.
Internal Diameter Coating Production by Pulsed Gas Dynamic Spraying
Authors: Jodoin B. , Yandouzi M. 
Published: December 2022

Abstract
The aim of this work is to assess the ability of pulsed gas dynamic spraying to deposit coatings on the inside surface of cylindrical workpieces. Thick dense copper coatings are produced on flat surfaces and on the inner surface of cylindrical workpieces using a specially designed gun extension. The coatings are evaluated based on microstructure and microhardness in order to determine if the copper has the same characteristics on all surfaces. A comparison between pulsed gas and cold gas dynamic sprayed copper coatings is also presented.
Electric Characteristics of Plasma Arc Produced by Bi-Anode Torch
Authors: An L.T. , Gao Y. 
Published: December 2022

Abstract
This paper discusses the double-arc phenomenon that occurs in plasma arc spraying and its prevention through the use of a bi-anode torch. It also presents the results of a study that compares voltage-current characteristics of the arc for different plasma gases and arc root attachment points. It is shown that the arc has different electrical characteristics when changing from the first to the second anode, which is explained using a simplified arc model.
MMCs Coatings with High SiC Volume Fraction Retention by Pulsed-Gas Dynamic Spraying
Authors: Yandouzi M. , Richer P. , Jodoin B. 
Published: December 2022

Abstract
Aluminum-based composite coatings reinforced with different volume fractions of SiC particles were deposited on aluminum substrates by means of pulsed gas dynamic spraying using a mechanically mixed composite feedstock powder. Microstructural features of the coatings are examined and their hardness is reported. The results show that the high fraction of SiC particles in the feedstock powder are retained in the coatings and that increasing SiC content in the aluminum matrix significantly improves coating hardness. The highest hardness value was obtained for a coating with 28 vol% SiC. Beyond that, coating hardness decreased, which is attributed to increasing porosity and decreasing cohesion between deposited aluminum-based particles.
Wear and Corrosion Behavior of HVOF-Sprayed WC-CoCr Coatings on Al Alloys
Authors: Bolelli G. , Lusvarghi L. , Barletta M. , Karhail V. 
Published: December 2022

Abstract
In this study, WC-CoCr coatings were deposited on an aluminum substrate by HVOF spraying. Layer thicknesses between 50 and 150 μm were achieved by stepwise increase of the number of torch scans. The stepwise method is shown to make the coatings not only thicker, but also denser due to peening effects and changes in the splat formation mechanism. It also explains the incremental improvement in coating hardness and corrosion and wear resistance observed over the first few torch scans, the largest of which occurs between the second and third scans. The coatings are also compared to anodized films and were found to have superior wear and impact resistance but less resistance to corrosion.
Characterization of Boron Carbide Thermal Sprayed Coatings for High Wear Resistance Performance
Authors: Rosales M. , Camargo F. , Lima C.R.C. 
Published: December 2022

Abstract
The aim of this work is to assess the potential of HVOF-sprayed boron carbide-based coatings for protecting surfaces against abrasive wear. The results are evaluated by microstructure characterization, microhardness measurements, and adhesion and wear tests.
Idiopathic granulomatous mastitis: Risk factors and management
Authors: Ramadan Rabie , Koryem Islam M. , Fayed Haytham 
Published: December 2022

BACKGROUND: IGM has a diagnostic and treatment dilemma. The etiology of IGM is unknown but some conditions have been discussed as predisposing factors including Oral Contraceptive Pills, pregnancy, breast feeding, reproductive age, hyperprolactinemia, infectious and autoimmune diseases. The current study aimed to determine possible risk factors for IGM and to evaluate our experience in its management. PATIENTS AND METHODS: The study included forty patients with IGM and forty females with normal breasts as a control group. CST treatment was initiated for all patients; patients who responded completely were followed up without surgical intervention. Failure to respond to medical therapy or incidence of corticosteroid-related complications were considered indications for surgical treatment. All patients were followed up for 6 months to detect recurrence. RESULTS: IGM had a significant higher incidence rate in young females within 5 years from the last lactation, smokers, those with hypperprolactinaemia, who had a history of breast feeding and those who received OCP (P = <0.001, <0.001, 0.006, 0.001, 0.023 and 0.027 respectively). The central part of the breast was more affected (9 cases (22.5%)). Multicenteric disease affected 8 cases (20%). Breast Mass was the most common presenting sign. After CST; the mass disappeared in 5 cases (12.5%), mass size reduced in 26 cases (65%) and mass size not affected in 9 cases (22.5%). Surgery was done in whom the mass size was reduced or not affected (35 cases (87.5%)). Disease recurrence was reported in 2 cases (5.7%). CONCLUSION: IGM usually affects females in their childbearing period with multiple risk factors mainly parity, smoking, OCP and breast feeding with wide variation regarding the presenting manifestations. We should start with CST as there is always a chance to avoid unnecessary surgery and combination of both modalities can reduce the incidence of recurrence.
Infiltrating gliomas with FGFR alterations: Histologic features, genetic alterations, and potential clinical implications
Authors: Dono Antonio , El Achi Hanadi , Bundrant Bethany E. , Goli Puneetha S. , Zhu Ping , Ozkizilkaya Hanim I. , Esquenazi Yoshua , Ballester Leomar Y. 
Published: December 2022

BACKGROUND: Fibroblast growth factor receptors (FGFRs) are frequently altered in cancers and present a potential therapeutic avenue. However, the type and prevalence of FGFR alterations in infiltrating gliomas (IGs) needs further investigation. OBJECTIVE: To understand the prevalence/type of FGFR alterations in IGs. METHODS: We reviewed clinicopathologic and genomic alterations of FGFR-mutant gliomas in a cohort of 387 patients. Tumors were examined by DNA next-generation sequencing for somatic mutations with a panel interrogating 205-genes. For comparison, cBioPortal databases were queried to identify FGFR-altered IGs. RESULTS: Fourteen patients (3.6%) with FGFR-mutant tumors were identified including 11 glioblastomas, Isocitrate dehydrogenase (IDH) – wildtype (GBM-IDH-WT), 2 oligodendrogliomas, and 1 astrocytoma IDH-mutant. FGFR-altered IGs showed endocrinoid capillaries, microvascular proliferation, necrosis, oligodendroglioma-like cells, fibrin thrombi, microcalcifications, and nodular growth. FGFR3 was the most commonly altered FGFR gene (64.3%). The most common additional mutations in FGFR-altered IGs were TERTp, CDKN2A/B, PTEN, CDK4, MDM2, and TP53. FGFR3 alterations were only observed in GBM-IDH-WT. EGFR alterations were rarely identified in FGFR3-altered gliomas. CONCLUSIONS: Histologic features correlate with FGFR alterations in IGs. FGFR3-TACC3 fusion and FGFR3 amplification are the most common FGFR alterations in IGs. FGFR alterations are a rare, but potentially viable, therapeutic target in asubset of IGs.
Evaluation of the applicability of microwave nondestructive testing to crack detection on a pipe inner surface
Authors: Guo Yijun , Yusa Noritaka , Hashizume Hidetoshi 
Published: December 2022

This study explores the applicability of microwave nondestructive testing to detect a metal pipe’s inner crack. Three-dimensional finite element simulations were conducted to study the inspectability of cracks using microwaves in different modes and the dependency of the reflection characteristics of microwaves on crack size. The simulation results showed that microwaves in the TM01 and TE01 modes can detect circumferential and axial cracks, respectively. The positive relationship between crack size and intensity corresponding to the reflected microwaves was obtained in simulations and then verified by experiments. In both simulations and experiments, the axial crack length showed a small influence on the results, especially for shallow crack detection. In the experiments, circumferential and axial cracks with a width of 0.3 mm were detected using microwaves. The experimental results revealed that signal amplitudes decreased when a slit penetrated a pipe wall, probably due to a microwave leakage.
A militarizáció hatása az oktatási és a foglalkoztatási szerkezetre
Authors: Bagó József  
Published: December 2022

Globális tudományos valamint napi civil tapasztalat is a militarizáció erősítése, sőt a militarizációs struktúrák fejlesztése. A militarizáció a társadalom és a gazdaság számos szegmensére kihat. A cikk a járvány előtti időszak (2010-2019) hazai főbb folyamataira fókuszálva, közöttük az oktatási és a foglalkoztatási szerkezetre vonatkozóan tekinti át a főbb változtatásokat. Az oktatás alakításának nem jelentéktelen mozzanatai kihatnak az iskolarendszer különböző szintjeire. A honvédelem mintegy 23 ezer főt, a hazai védelmi ipar pedig mintegy kétezer főt foglalkoztatott az évtized végén - tendenciájában enyhén növekvően. A hadkötelezettség felső korhatárának megemelése a munkavállalási korú népességből potenciálisan mintegy 850 ezer főt érint.
Inkrementális oktatás szerepe és lehetőségei a szakképzésben – Iteratív oktatás, avagy nincs új a nap alatt, de egy kicsit mégis
Authors: Sterczl Gábor  , Molnár György  
Published: December 2022

A 21. századi legfontosabb képességek az eddigi tapasztalatok és alátámasztó kutatások szerint a tanulás tanulásának képessége, a kritikus gondolkodás, a kreativitás, az együttműködés, a reflektív és problémamegoldó gondolkodás, valamint a kommunikáció.
Mi mozgatja, mi motiválja a diákokat, akik informatika vagy elektronika-elektrotechnika területen tanulnak napjainkban a szakképzési rendszerben? Feltáró kutatásokra alapozva megvizsgálom, mely innovatív vállalati módszerek azok, amelyek potenciálisan alkalmazhatóak lehetnének a szakképzés hatékonyságának, szerethetőségének növelésére.
Ezek után az agilis módszertanok megközelítése alapján megvizsgálom, hogyan lehet a szakképzésben is inkrementálissá tenni az oktatást, illetve hogy miben is különbözik mindez a spirális tanítástól, vagy az egyszerű tantárgyi integrációtól.
Proinflammatory Cytokines Associated with InvA and PagC Genes of Salmonella typhi Isolated from Patients Undergoing Cholecystectomy
Authors: Eidan Ali J. 
Published: December 2022

Objective: Cholecystectomy is the surgical removal of the gallbladder. The gallbladder is often colonized by Salmonella during typhoid fever. The association between cytokine and virulence genes of Salmonella is not well known. The current study aims to identify the association between proinflammatory cytokines, TNF-α and IFN-γ, and two virulence genes, InvA and PagC, extracted from S. typhi isolates obtained from patients undergoing cholecystectomy.
Materials and Methods: One hundred and fifty clinical specimens, including gallbladder tissues and blood, were collected from patients undergoing cholecystectomy at AL-Sadder Medical City and AL-Furat General Hospital/Iraq from December 2019 to September 2020. A Monoplex PCR technique was used to detect InvA and PagC, and an enzyme-linked immunosorbent assay was used to measure serum levels of TNF-α and IFNγ.
Results: From a total of 66 S. typhi isolates, the prevalence of InvA and PagC was (84.8% and 69.6%) respectively. Even after adjusting for potential confounding factors, serum levels of TNF-α and INF-γ were statistically significantly higher in PagC detected in S. typhi isolates compared to PagC not detected (p-value<0.001), but there was no significant difference between InvA detected in S. typhi isolates and InvA not detected (p-value > 0.05).
Conclusion: The virulence genes of S. typhi, especially PagC, may be considered a potent inducer of proinflammatory cytokine secretion. Further studies are needed to present the patient‘s additional clinical course according to cytokine level.
PELATIHAN KETERAMPILAN KOMUNIKASI POKDARWIS DESA WISATA MENDAK KECAMATAN DAGANGAN MADIUN
Authors: Widiantari Maria Magdalena 
Published: December 2022

Abstractâ€” Communication skills for Kelompok Sadar Wisata (Pokdarwis- Tourism Awareness Groups) are important because they are related to best services for visitors and to ensure the continuity of tourism visitation..Communication skills are not only related with manner, but also related with how to build a cooperation with other parties, tourism marketing, and tourism branding in mass media. The training will be divided into several materials, namely communication skills in general terms, public speaking, mass media marketing and branding, and lobbying-negotiating for cooperation building with other parties. The purpose is that the members of the Pokdarwis have good communication skills so they can support the development of Watu Rumpuk tourist destinations and conduct profitable cooperation with various national tourism bureaus so as to increase the number of visits and in turn improve the welfare of rural communities.Â Keywordsâ€”: communication, Pokdarwis, Watu Rumpuk, Mendak.
Justiça ocupacional na graduação em terapia ocupacional: Reflexões a partir de um evento estudantil
Authors: Rodrigues Iolanda Costa , Freitas Camille Moliere , Novais Thaís de Souza , Santos Pablo Alberto Pereira dos , Queiroz Adriana Gonçalves , Hirochi Tânia Lucia 
Published: December 2022

Introdução: os discentes do PET-TO observaram a escassa representatividade negra entre seus pares e no corpo discente. Diante disso, considerando também o interesse na temática do racismo, fomentaram o evento “Terapia Ocupacional, Racismo e Justiça Ocupacional: olhando para dentro”. Objetivo: refletir sobre o que, a partir das discussões do evento, foi despertado nos discentes do PET, destacando a importância da discussão do conceito de Justiça Ocupacional na graduação. Síntese dos elementos de estudo: este artigo apresenta os relatos de experiência de 4 estudantes, discutidos em 3 tópicos, para facilitar a compreensão do leitor, sobre a vivência: conhecimento/desconhecimento do termo Justiça Ocupacional; autoidentificação e representatividade e amenizadores da injustiça ocupacional. Conclusão: destaca-se que o terapeuta ocupacional é um agente amenizador das injustiças ocupacionais em potencial. Logo, enquanto estudantes, questionamo-nos e refletimos sobre a importância de abordar os determinantes sociais da ocupação na graduação. Em se tratando da população negra, que historicamente é alvo de inúmeras injustiças ocupacionais, reforçamos a necessidade de ações e mais discussões, principalmente dentro da academia universitária, que contribuam para que esses indivíduos exerçam plenamente suas vidas cívica e social, tendo seus direitos ocupacionais garantidos e acessíveis.
Perfil epidemiológico de pacientes com Covid-19 submetidos a oxigenação por membrana extracorpórea no período de 2020-2022
Authors: Bomfim Vitoria Vilas Boas da Silva , Araújo Paulo da Costa , Gomes Hans Andersen Penalva , Vieira Wilcler Hott , Tirabasso Gabriel Fernandes Oliveira , Souza Lívia Barbosa Pacheco , Sales Felipe de Castro Dantas , Bentes Renata Mendes , Sousa Lourimar Viana Nascimento Franco de , Sousa Gisele Maria de 
Published: December 2022

A doença de Covid-19 tende a ser mais incidente e extrema em homens, o que é definido por cada um explicações mórbidas e comportamentais – no sexo feminino, a ocorrência de doenças que levam a piora ocorrências diminuem consideravelmente quando comparadas ao sexo masculino, devido aos hábitos de vida e saúde. O estudo objetiva traçar o perfil epidemiológico dos pacientes que fizeram uso de oxigenação por membrana extracorpórea durante a pandemia do coronavirus entre 2020 e 2022. Trata-se de uma revisão integrativa da literatura realizada através das bases de dados Scientific Electronic Library Online (SciELO), Literatura Latino-Americana e do Caribe em Ciências da Saúde (LILACS) e Medical Literature Analysis and Retrieval System Online (MEDLINE), através dos seguintes Descritores em Ciências da Saúde (DeCS): “coronavírus”, “oxigenação por membrana extracorpórea” e “epidemiologia”. Combinados entre si pelo operador booleano AND. Como critérios de inclusão: artigos disponíveis na íntegra, nos idiomas português, espanhol e inglês, que abordassem a temática, entre 2020 e 2022. Como critérios de exclusão: artigos que não contemplavam o tema e estudos repetidos nas bases de dados. Foram encontrados 164 artigos, após a busca combinada de descritores e operadores booleanos foram selecionados 6 artigos para compor a amostra final, conforme demonstrado no quadro abaixo. Assim, o perfil dos doentes internados em um hospital de referência para coronavírus, em sua maioria, estavam em consonância com diferentes pesquisas sobre a Covid-19 no Brasil e no mundo: homens, acima de 50 anos com presença de comorbidades, sendo as mais prevalentes diabetes e hipertensão.
Multiple reasons underlaying uncontrolled disease in the majority of chronic rhinosinusitis patients
Authors: Viskens An-Sofie , Wils Tine , Van Bulck Pauline , Cools Leen , Vanderveken Olivier , Hellings Peter W. 
Published: December 2022

BackgroundUp to 40% of patients with chronic rhinosinusitis (CRS) remain uncontrolled despite guidelines of care being available, with an enormous socio-economic impact. The reasons for uncontrolled disease can be arbitrarily divided into disease-related, diagnosis-related, treatment-related, and patient-related factors. The relative contribution of each factor in uncontrolled CRS remains speculative. This explorative study aimed at determining the factors responsible for uncontrolled CRS in a tertiary care center, thereby identifying the most commons reasons for uncontrolled disease in CRS.MethodsPatients with uncontrolled CRS (n = 187) were asked to fill out a questionnaire and underwent a clinical examination at the outpatient clinic of the University Hospital of Leuven, Belgium. Two independent physicians evaluated the (multiple) reason(s) for uncontrolled disease.ResultsIn uncontrolled CRS, 66% of patients showed two or more reasons for uncontrolled disease according to the physicians' evaluation. Disease-related factors (70%) were most often considered the reason for uncontrolled disease, followed by treatment- (45%), patient- (42%), and diagnosis- (32%) related factors.ConclusionIn case of uncontrolled CRS, the different contributing factors to the uncontrolled nature need to be carefully addressed during diagnostic and therapeutic actions in order to define strategies to improve CRS care. Most uncontrolled CRS patients have multiple reasons contributing to their disease status, with disease-related factors being the most common factor.