bluuebunny/crossref_metadata_2025 huggingface dataset:
The Structure and Properties of Bilayer Carbon Films with Various Layer Thickness
Authors: Liu Yuwei , Rogachev A. V. , Jiang Xiaohong , Zhou Bing , Kulesh E. A. , Piliptsou D. G. , Rudenkov A. S.
Published: August 2021

This article studies the microstructure and mechanical properties of diamond-like carbon films (α-C), depending on their architecture. The bilayer (titanium/a-C) and (titanium nitride [TiN]/a-C) films were deposited from the flows of the metal plasma, formed through sputtering a titanium cathode by a direct current arc, and the carbon plasma, formed as a result of pulsed arc sputtering of a graphite cathode. The effect of titanium and TiN sublayers on the structure and mechanical properties of carbon films has been shown. It has been found that the catalytic effect of the sublayer is most pronounced when the carbon layer thickness is less than 90 nm; when the carbon layer thickness is less than 30 nm, the size of Csp2 clusters decreases, and the fraction of atoms with Csp3 bonds increases. The annealing of the films does not significantly affect the behavior of the phase composition and the structure of the films with an increase in the carbon layer thickness. It has been demonstrated that the size dependences of the optical properties, which are manifested in a transparency increase and a change in the band gap when increasing the carbon layer thickness, are associated with the occurrence of mutual diffusion processes in the interfacial zone.
Savings in Human Force Field Learning Supported by Feedback Adaptation
Authors: Mathew James , Lefèvre Philippe , Crevecoeur Frederic
Published: August 2021

Savings have been described as the ability of healthy humans to relearn a previously acquired motor skill faster than the first time, which in the context of motor adaptation suggests that the learning rate in the brain could be adjusted when a perturbation is recognized. Alternatively, it has been argued that apparent savings were the consequence of a distinct process that instead of reflecting a change in the learning rate, revealed an explicit re-aiming strategy. Based on recent evidence that feedback adaptation may be central to both planning and control, we hypothesized that this component could genuinely accelerate relearning in human adaptation to force fields (FFs) during reaching. Consistent with our hypothesis, we observed that on re-exposure to a previously learned FF, the very first movement performed by healthy volunteers in the relearning context was better adapted to the external disturbance, and this occurred without any anticipation or cognitive strategy because the relearning session was started unexpectedly. We conclude that feedback adaptation is a medium by which the nervous system can genuinely accelerate learning across movements.
The Contribution of Premotor Cortico-Striatal Projections to the Execution of Serial Order Sequences
Authors: Sánchez-Fuentes Asai , Ramírez-Armenta Kathia I. , Verma-Rodríguez Anil Kumar , Díaz-Hernández Edgar , Aguilar-Palomares Antonio , Ramírez-Jarquín Josué O. , Tecuapetla Fatuel
Published: August 2021

Striatal activity is necessary to initiate and execute sequences of actions. The main excitatory input to the striatum comes from the cortex. While it is hypothesized that motor and premotor cortico-striatal projections are important to guide striatal activity during the execution of sequences of actions, technical limitations have made this challenging to address. Here, we implemented a task in mice that allows for the study of different moments to execute a serial order sequence consisting of two subsequences of actions. Using this task, we performed electrophysiological recordings in the premotor (M2) and primary motor (M1) cortices, and state-dependent optogenetic inhibitions of their cortico-striatal projections. We show that while both M2 and M1 contain activity modulations related to the execution of self-paced sequences, mainly, the premotor cortico-striatal projections contribute to the proper execution/structuring of these sequences.
COST ESTIMATION PERFORMANCE IN THE CONSTRUCTION PROJECTS: A SYSTEMATIC REVIEW AND FUTURE DIRECTIONS
Authors: Fazil Mohammad Waffy , Lee Chia Kuang , Muhamad Tamyez Puteri Fadzline
Published: August 2021

Cost estimation in construction project is very critical for avoiding cost overrun in the project. This paper aims to provide a basis for improving cost estimation performance in construction through a systematic review of previous studies for last 31 years. The papers have identified a total of 238 construction cost estimation papers in 23 journals. Only 33 papers focused on factors influencing the performance of cost estimation. These papers were then analyzed, synthesized, and summarized in terms of the distribution across countries and citation influences. The factors of cost estimation performance were clustered to several themes with most of the factors in control themes. The factors in control themes are cluttered based on Organizational Control Theory (OCT). However, control themes provide less conceptual basis and dynamic to explain cost estimation performance and relationship among the factors. Therefore, this study reclassified other factors of cost estimation performance with reference to Contingency Theory (CT) and Task-Technology Fit Theory (TTFT). Hence, a new framework with relationship among the factors and cost estimation performance was developed. Further development and research of using the CT and TTFT frameworks were also discussed.
BRIDGING ACADEMICIAN AND COMMUNITY THROUGH KNOWLEDGE TRANSFER PROGRAM (KTP) ON WORKPLACE RISK ASSESSMENT TECHNIQUE- A CASE STUDY
Authors: Ab Ghani Nur Fazlinna , Ramli Azizan , Johari Kharul Anwar , Mat Desa Mohd Shaiful Zaidi , Hanapi Norhaslinda
Published: August 2021

Since technical education involves equipment and workshop/laboratory activities, safety and health risks due to hazardous situations have become the primary issue and require immediate mitigation measures. The main issue that needs immediate attention here is that most ADTEC (Advanced Technology Training Center) staff lack expertise in workplace risk assessment techniques. Some of them are also unaware of these life-threatening safety and health risks. They are unable to anticipate the long-term impact of their everyday activities on their safety and health. Thus, knowledge of hazard identification and prevention strategies is essential for them to improve their workplace environment. This program has been executed in four stages, which are off-the-job training, walkabout and hands-on activity, oral presentation, and followed by an individual assessment. As for an individual assessment, all participants need to sit the written test and an oral interview. The purpose of an individual assessment is to gauge participant understanding and the effectiveness of the program. The program has been conducted successfully whereby all the 32 participants have undergone the training and passed the assessment (written test and interview). All participants gave very encouraging feedback and believed this program would equip them with knowledge on conducting the risk assessment for all activities in their organization. The authors strongly believe that this initiative and program will ultimately assist ADTEC in reducing the probability of accident occurrence in their organization.
Designing an evaluation inventory for identifying teachers’ professionalism deficits in the context of transformation of contemporary education
Authors:   Herzen State Pedagogical University of Russia, Gutnik Irina Yuryevna
Published: August 2021

Introduction. The article is devoted to the problem of identifying teachers’ professional deficits in the context of transformation of modern school education. The purpose of this study is to describe a set of diagnostic methods aimed at identifying professional deficits of teachers in the context of transformation of contemporary education, which can be used both by teachers for self-assessment in order to subsequently overcome the detected deficits, and by school leaders to support teachers’ professional growth. Materials and Methods. In order to develop the set of diagnostic methods aimed at revealing teachers’ professional deficits, the author has used the following methods of educational research: conversations, focus-group method, in-depth and narrative interviews, action research, and soft systems methodology. The study involved 25 teachers and 720 students of grades 5-9. Results. The author has clarified the concept of ‘professional deficits’ and analyzed advantages and drawbacks of quantitative methods used in identifying teachers’ professional deficits. The study justifies using the set of diagnostic methods aimed at identifying teachers’ professional deficits in the context of contemporary education. Moreover, it has been proved that the presented evaluation inventory contributes to enhancing teachers’ professional self-assessment and reflection. Conclusions. In conclusion, the author summarizes the research findings about the implementation of the presented evaluation inventory and its contribution to teachers’ continuing professional growth.
Can Numeration Ability Be Enhanced Through Physical Activity of Traditional Tabak Games?
Authors: Puspa Hidasari Fitriana , Bafadal Muhammad Fachrurrozi , Yani Ahmad
Published: August 2021

The purpose of this study was to develop traditional tabak games into playing and learning media for elementary school studentsâ€™ Mathematics learning. The research method used is a product development activity, so this type of research includes research and development. In the R&D research model chosen, the research and development model developed by (Gall Borg & P). Based on the stages of the research that has been carried out, the results of this research are a discovery in learning physical education and learning mathematics based on culture which is packaged in traditional Tabak games, and the advantages of this research result are made in video form and can be accessed easily via YouTube account. The conclusion in this study is that the traditional game of tabak based on numeracy skills is a discovery in learning mathematics and physical education based on culture which is packaged through tabak games. This research innovation makes it easier for elementary school students to understand mathematics learning, especially arithmetic material, and can be applied through physical education learning and students can play independently and in groups in the studentâ€™s neighborhood. This product can help to enrich the cultural knowledge of West Kalimantan and increase physical activity.
SERBEST DİŞ HEKİMLERİNİN İMPLANT TEDAVİSİNE YAKLAŞIMLARI
Authors: KESKİN ÖZYER Elcin , YILDIZ Coşkun , KAHRAMANOĞLU Erkut , ÖZKAN Yasemin , KAZAN Zübeyir
Published: August 2021

Amaç: Günümüzde diş eksikliklerinin telafisinde implant uygulamaları yaygın bir şekilde tercih edilmektedir. Bu çalışmanın amacı serbest diş hekimlerinin implant uygulamalarında kullandıkları teknikleri, yaptıkları planlamaları ve komplikasyonlarla karşılaştıklarında buldukları çözüm yollarını değerlendirmektir.  Gereç ve Yöntem:Bu çalışmada 125 uzman olmayan diş hekimine ulaşılmış ve implant uygulaması hakkında 28 sorudan oluşan anket uygulanmıştır. Planlama, diagnoz teknikleri, kullanılan ölçü tekniği ve materyalleri, kullandıkları implant markaları, karşılaştıkları komplikasyonlar, kullandıkları üst yapı malzemeleri sorgulanmıştır.Bulgular:Tam dişsizlik vakalarında sabit protezler %64, hareketli protezler %29 ve hibrit protezler %7 oranında tercih edilmektedir. Günde 1 paketten fazla sigara tüketen bireylerde, diabet hastalarında, gelişimini tamamlamamış bireylerde ve baş boyun bölgesinde radyoterapi gören bireylerde implant tedavisi tercih edilmemektedir. İmplant üstü sabit restorasyonlarda simante restorasyonlar vidalı sistemlere göre daha sık tercih edilmektedir. İmplant üstü restorasyonların ölçüsünün alınmasında hem açık hem de kapalı kaşık tekniklerinin kullanıldığı görülmüştür. Hekimlerin %76 oranında 8.5 mm ve daha uzun implantları tercih ettikleri ve %73 oranında çapı 3.7 ve 4.2 mm arasındaki implantları kullandıkları görülmüştür. Bu çalışmada en çok peri-implantitis komplikasyonu ile karşılaşıldığı gözlenmiştir. İmplant tedavisi uygulanan hastaların sıklıkla 6 ay- 1 yılda bir kontrole çağırıldığı görülmüştür.  Sonuç:Bu çalışmada hekimler vaka sınıflamasına göre farklı tedavi seçenekleri ve bu tedavi seçeneklerine göre de farklı materyaller seçtikleri görülmüştür.Anahtar Kelime: Anket, diş hekimi, implant.
Comparison Of Antibacterial Effects Of Pulp Capping Materials
Authors: BAKIR Elif Pınar , BAKIR Şeyhmus , ÜNAL Samican
Published: August 2021

The aim of this study is to evaluate the antibacterial effects of six different pulp capping materials on Streptococcus mutans, Lactobacillus acidophilus and Enterococcus faecalis bacteria in different time periods. In our study, the antibacterial effects of TheraCal LC, Dycal, Biodentine, Calcimol LC, Activa and MTA Angelus were tested against strains of S. mutans, L. acidophilus and E. faecalis using the disk diffusion method. Each of the materials was hardened in standard, 5 mm diameter, hollow sterile discs prepared beforehand in line with the manufacturer's recommendations. The materials placed in the sample containers were disinfected under UV light device for 20 minutes. The materials were placed on petri dishes where microorganisms were cultivated at 2.5-3 cm intervals. The inhibition zone diameters around the discs that were left to incubate for 24-48 hours at 37°C were measured in millimeters. Statistical analysis of the data was performed using One Way ANOVA. At the end of the study, the tested materials showed a statistically significant antibacterial effect on all bacterial strains used (p 0.05).
Adaptation of Fear of Missing Out Scale (FoMOs) to Dentistry
Authors: İNCEOĞLU Feyza , DEMİR Pinar , AYDOĞDU Hatice
Published: August 2021

Background: The objective was to adapt the Fear of Missing Out Scale (FoMOs) Scale developed by Przybylski et al in 2013 to Turkish and to perform the validity and reliability study of this scale. Methods: This study was designed as a methodological study, and the adapted questionnaire was completed by 1142 dental students educating in 59 universities in Turkey. The answers given were evaluated according to the original scale and its validity and reliability were tested. Explanatory Factor Analysis (EFA) and Confirmatory Factor Analysis (CFA) were performed to assess the construct validity of the form. The reliability of FoMOs was tested through the Cronbach’s α internal consistency coefficient, total item correlation, and test-retest analysis. Results: Different from the original FOMO obtained in the study, it consisted of 2 sub-dimensions and a total of 10 items. Item 10 was excluded owing to the low factor loads. Accordingly, the "10-item scale" with two sub-dimensions was obtained. The 2 sub-dimension scale structure found as a result of EFA was supported by the result obtained in DFA. The Cronbach alpha reliability coefficient was found to be 0.840 for the FoMOs total score, 0.919 for the "trait" sub-dimension, and 0.718 for the "state" sub-dimension. Conclusion: This scale was made to define and analyze the concept of FoMO in dentistry postgraduate career planning. The current scale is a valuable and reliable tool to guide the idea behind career planning and provides a great contribution to the literature.
Structure and 3-D Model of a Solid State Thin-Film Magnetic Sensor
Authors: Barylo G.I. , Holyaka R.L. , Marusenkova T.A. , Ivakh M.S.
Published: August 2021

Vector 3-D magnetic sensors form the basis of measurement devices for magnetic field mapping and magnetic tracking. Typically, such sensors utilize specific constructions based on split Hall structures (SHS). An SHS-based 3-D magnetic sensor is a bulk semiconductor integrated structure with 8 or more contacts. Combining current flow directions through the contacts and measuring the corresponding voltages, one defines projections BX, BY, BZ of the magnetic field vector. This work presents a novel design of 3-D solid state magnetic sensors that requires no insulation by p-n junctions and can be implemented by thin-film technology traditionally used for fabrication of Hall sensors including those based on InSb films. Besides, a SPICE model of the 3-D magnetic sensor is provided, which helps design the proposed sensor and refine techniques of its calibration.
Optical Properties of Monocrystalline Silicon Nanowires
Authors: Gentsar P.O. , Stronski A.V. , Karachevtseva L.A. , Onyshchenko V.F.
Published: August 2021

The paper presents the results of a study of the optical reflection and transmission spectra of a silicon single crystal p-Si (100) with silicon nanowires grown on both sides and porous silicon p-Si (100) on a single crystal substrate in the spectral range 0.2 ÷ 1.7 μm. The layers of nanowires had a thickness of 5.5 µm, 20 µm, 50 µm and a porosity of 60 %. The porous silicon layers had a thickness of 5 μm, 50 μm and a porosity of 45 %, 55 % and 65 %. The change in the energy band structure in single-crystal silicon nanowires and in a single-crystal matrix of porous silicon is shown.
A study of common fixed points that belong to zeros of a certain given function with applications
Authors: Saleh Hayel N. , Imdad Mohammad , Karapinar Erdal
Published: August 2021

In this paper, we establish some point of φ-coincidence and common φ-fixed point results for two self-mappings defined on a metric space via extended CG-simulation functions. By giving an example we show that the obtained results are a proper extension of several well-known results in the existing literature. As applications of our results, we deduce some results in partial metric spaces besides proving an existence and uniqueness result on the solution of system of integral equations.
Finite-time ruin probability of a perturbed risk model with dependent main and delayed claims
Authors: Yang Yang , Wang Xinzhi , Zhang Zhimin
Published: August 2021

This paper considers a delayed claim risk model with stochastic return and Brownian perturbation in which each main claim may be accompanied with a delayed claim occurring after a stochastic period of time, and the price process of the investment portfolio is described as a geometric Lévy process. By means of the asymptotic results for randomly weighted sum of dependent subexponential random variables we obtain some asymptotics for finite-time ruin probability. A simulation study is also performed to check the accuracy of the obtained theoretical result via the crude Monte Carlo method.
Existence of positive S-asymptotically periodic solutions of the fractional evolution equations in ordered Banach spaces
Authors: Li Qiang , Liu Lishan , Wei Mei
Published: August 2021

In this paper, we discuss the asymptotically periodic problem for the abstract fractional evolution equation under order conditions and growth conditions. Without assuming the existence of upper and lower solutions, some new results on the existence of the positive S-asymptotically ω-periodic mild solutions are obtained by using monotone iterative method and fixed point theorem. It is worth noting that Lipschitz condition is no longer needed, which makes our results more widely applicable.
Chlamydospores production enhancement of Duddingtonia flagrans in a solid-state fermentation system
Authors: Cuadrado Osorio Paula Daniela , Castillo Saldarriaga Carlos Rafael , Cubide Cardenas Jaime Andres , Gómez Alvarez Martha Isabel , Bautista Bautista Eddy Johana
Published: August 2021

Resistance structures such as chlamydospores produced by the fungus Duddingtonia flagrans allow the reduction of infectious larvae from gastrointestinal nematodes. The objective of this research was to study the effect of carbon and nitrogen sources on the production of chlamydospores of the fungus in a solid state fermentation system (SSF). Twelve substances were studied using a statistical strategy, evaluating their effect on the production of Chlamydospores Finally, using an optimization strategy, the modifications of the substances that favor the production of chlamydospores were defined, and the effect of these on the predatory capacity of the fungus was evaluated. Optimal conditions were the variability of 0.25% w / w ammonium sulfate and 0.56% w / w sodium acetate in broken rice. The maximum concentration reached under this condition was 2.27x107 chlamydospores g of dry substrate-1, with a productivity of 1.62x106 chlamydospores g of dry substrate-1 day-1.
Nutritional status of Galia melon plants irrigated with saline water in different soils
Authors: Silva José Leôncio de Almeida , Medeiros José Francismar de , Nascimento Iarajane Bezerra do , José Jeferson Vieira , Miranda Neyton de Oliveira , Souza Carolina Malala Martins de
Published: August 2021

The experiment was conducted in 2014, in a completely randomized factorial design (5x6), with three replications. The factors were soil classes (Typic Ustipsamments, Typic Haplustults, Typic Haplustepts, Typic Ustifluvents, and Typic Haplusterts) and levels of irrigation water salinity (0.5, 1.0, 2.0, 3.0, 4.0, and 5.0 dS m-1). Increasing salinity of irrigation water caused increase in leaf contents of macronutrients in all soils. Adequate leaf contents of N, K, and Mg were observed in plants grown in all soils except K in Typic Haplusterts and Mg in Typic Ustipsamments. Appropriate P levels were observed only in Typic Haplustepts, and Ca only in Typic Haplustults and Typic Ustifluvents. Increased salinity of irrigation water caused increased leaf contents of micronutrients in all soils except copper in Typic Ustifluvents, iron in Typic Haplusterts and Typic Haplustults, and manganese in Typic Ustipsamments and Typic Haplustults.
Parameter tuning in the process of optimization of reinforced concrete structures
Authors: Negrin Diaz Iván Antonio , Chagoyén Méndez Ernesto Luciano , Negrin Montecelo Alejandro
Published: August 2021

Parameter tuning deals with finding the best parameter configuration of an optimization method in a given problem. In structural optimization, it could be an extensive and high-computing cost process. One way to avoid this drawback is to use analytical functions (or benchmark functions), for simulating main features of objective functions in real problems. In this paper, Biogeography-Based Optimization is applied during structural optimization of reinforced concrete frame structures, and Ackley function for parameter tuning in real cases simulation. The tuned method outperformed other meta-heuristics in the actual optimization problem. Structural results show that by not including static soil-structure interaction, differences in direct cost of the superstructure of up to 4.42% are obtained for predominantly cohesive soils and 11.55% for predominantly frictional ones. In beams, L/h ratios around 15 and high reinforcement ratios are highly recommended. In columns and shallow foundations, best rectangularity reaches values of 1.15 and 2.00 respectively.
Characterization of bacterial diversity and assessing the cyanide biodegradation potential of bacterial isolates from gold processing plants
Authors: López-Ramírez Viviana , Márquez Godoy Marco Antonio , Moreno Herrera Claudia Ximena
Published: August 2021

Cyanide is the basic component of many industrial processes, among which is gold processing, being very toxic or even lethal. Treatment, with the help of microorganisms, can be used effectively to reduce the load of harmful chemicals into the environment. The combination of microbiological methods and molecular tools allowed inferring the presence of a dominant population and the composition varied both in the places of origin and in the method used. The dominant phylogenetic affiliations of the bacteria were determined by sequencing the 16S rRNA gene. The isolates identified, as Bacillus and Enterococcus were capable to degrade 41.9 and 27.5 mg CN- L-1 respectively. This study provides information about the presence of a diverse bacterial community associated with residual effluents from cyanidation processes in Colombia and suggests that their presence could play a role in the biological degradation of cyanide compounds, offering an alternative for mining wastewater treatment.
A case study on causation of the landslide on 26 October 2016 in the northern Colombian Andes
Authors: Martínez Carvajal Hernan Eduardo , Aristizábal Giraldo Edier Vicente , Garcia Aristizabal Edwin Fabian
Published: August 2021

This paper presents the results of a technical investigation on the causation of the landslide that occurred in Las Nieves quarry on October 26, 2016 in the municipality of Copacabana, located in the northern part of the Colombian Andes. This landslide caused the highest number of fatalities in Colombia in 2016, totalling 16 deaths. The study included field visits, soil sampling, study of the geology and geomorphology, as well as analysis of rainfall and groundwater flows presented in the area. The information collected in this study is consistent with the hypothesis that the regional groundwater flow which comes from recharge zones, generated an increase in water levels in the landslide zone thus triggering the landslide. Finally, a stability analysis (statistical analysis and sensitivity analysis) was performed using the limit equilibrium method, where the effect of the rise in the ground water table was modelled as the trigger. The results of the stability analysis showed a low safety factor for the slope, even when low water levels were considered.
Consumo de psicoestimulantes por estudantes de medicina de uma universidade do extremo sul do Brasil
Authors: Júnior Rudinei Carlos Mezacasa , Meneghini Kevin Francisco Durigon , Demenech Lauro Miranda , Morgan Henri Luiz , Petry Arthur Franzen , Dumith Samuel Carvalho
Published: August 2021

Objetivo: analisar a evolução do consumo de psicoestimulantes pelos acadêmicos de Medicina da Universidade Federal do Rio Grande (FURG) durante quatro anos.Métodos: foi realizado um estudo de painel com amostra de estudantes do primeiro ao quarto ano do curso de medicina, matriculados na instituição no período de 2015 a 2018. O estudo teve como desfecho o consumo de psicoestimulantes. Foram coletadas informações sobre o uso de cafeína, metilfenidato, piracetam, modafinil, bebidas energéticas, metilenodioximetanfetamina (ecstasy) e anfetaminas. O questionário foi composto de duas etapas. Na primeira, foram recolhidas informações demográficas, sobre hábitos e qualidade de vida. Na segunda, questionou-se sobre o consumo de substâncias estimulantes, abordando a frequência de uso, efeitos percebidos e a motivação para o consumo, assim como o início do consumo durante o curso.Resultados: a prevalência de uso dessas substâncias aumentou de 58% para 68% de 2015 a 2018. A proporção de acadêmicos que começaram a usar psicoestimulantes durante a faculdade, aumentou de 15% para 30%. Essa proporção aumentou conforme o ano do curso, passando de 25% no primeiro ano para 38% no quarto ano. Esse resultado foi atribuído, principalmente, ao uso de metilfenidato, cuja prevalência aumentou de 21% para 56% durante o período do estudo.Conclusões: o consumo de psicoestimulantes entre estudantes de medicina foi alto e o início de seu consumo durante a faculdade aumentou ao longo dos anos. Seu uso tem sido percebido como eficaz pela maioria dos usuários, o que pode dificultar o gerenciamento do uso indevido dessas substâncias.
HIV infection in the west region of Pará
Authors: Melo Carla Beatriz Bezerra , De Lima Jord Thyego Simplício , Silva Juciele Faria , Da Silva Erek Fonseca , Assy João Guilherme Pontes Lima , Said Renato do Carmo , Berretta Olívia Campos Pinheiro , Gouvêa-e-Silva Luiz Fernando
Published: August 2021

Aims: knowledge of the patient’s profile, for the evaluation and suggested behaviors, promotes a favorable outcome. Thus, the objective of the study is to analyze the socioeconomic, clinical, and immunological characteristics of patients infected by the human immunodeficiency virus in the western region of the state of Pará.Methods: were analyzed 1966 medical records of patients whose first visit to a reference center, in the municipality of Santarém-PA, was between 1998 and 2018. Socioeconomic, clinical, and immunological information was collected from patient medical records. Data were analyzed using descriptive and inferential statistics, adopting p <0.05.Results: there was a predominance of males (62.5%), aged 20-39 years (69.1%), elementary school (58.6%), single (57.3%), and employed (66.4%). Immunosuppression was present in 22% of patients and a viral load was detectable in 66%. Tuberculosis (37%) and toxoplasmosis (23%) predominated as opportunistic infections, and syphilis (62.6%) and human papillomavirus (HPV; 14%) as other infections.Conclusions: it is concluded that both opportunistic infections and other infections were present in 25-22% of the patients and that the presence of opportunistic infections favors the installation of another infection, or vice versa. Toxoplasmosis, HPV, and syphilis are positively associated with men, and toxoplasmosis and tuberculosis with age >35 years. Immunosuppression was shown to be positively associated with men and age >35 years, as well as favoring the onset of tuberculosis, toxoplasmosis, and detectable viral load.
Acute and chronic back pain in adults and elderly in southern Brazil
Authors: Saes-Silva Elizabet , Viero Vanise dos Santos Ferreira , Meller Fernanda de Oliveira , Schäfer Antônio Augusto , Canena Michele Vaz , Saes Mirelle de Oliveira , Dumith Samuel Carvalho
Published: August 2021

Aims: to determine the prevalence of acute and chronic back pain and associated factors and identify the consequences of this pain in adults and the elderly in southern Brazil.Methods: cross-sectional study conducted in 2019, in Criciúma, Santa Catarina, in individuals aged 18 and over. Acute back pain was pain in the cervical, thoracic, or lumbar regions not exceeding 3 months and chronic pain as pain for 3 months or more. Bivariate analyzes and multinomial logistic regression were performed.Results: among the 820 participants, the prevalence of back pain was 67.0%, acute pain 39.3% (95% CI: 35.5% to 43.3%) and chronic pain 27.4% (95% CI: 24.5% to 30.4%). Acute back pain was associated with women, overweight, obesity, and with WMSD/RSI, while chronic pain chronic pain was found mostly in women, being related to leisure inactivity ...were female, leisure inactivity, falls, Work-related musculoskeletal disorder/repetitive strain injury, and arthritis/rheumatism.Conclusions: acute pain was greater among overweight/obese and chronic pain contribute to absenteeism and demand for health services.
Os afazeres do intelectual em tempos de crise
Authors: Montalvão Sérgio de Sousa
Published: August 2021

O discurso de agradecimento de Caio Prado Júnior pelo prêmio Juca Pato, lido no auditório da Folha de S.Paulo, durante a noite de 28 de março de 1967, é, neste artigo, uma oportunidade de incursão na história intelectual de um período marcado pela transição de uma esfera pública democrática para uma esfera pública autoritária. A premiação decorreu da repercussão alcançada pelo livro A revolução brasileira, primeira reflexão de peso sobre os erros cometidos pelos setores progressistas, na conjuntura final da República de 1946. Em seu discurso, o historiador tratou da responsabilidade do intelectual para enfrentar o fechamento de horizontes e de perspectivas futuras de um país que ainda vivia uma modernidade inconclusa. A expectativa quanto ao futuro do Brasil, em um momento de crise das instituições de representação democrática, leva a uma reflexão sobre o tempo histórico no pensamento social.
Livros, gravuras e pinturas na Igreja da Ordem Terceira Carmelita do Recife
Authors: Honor André Cabral
Published: August 2021

É ponto pacífico na historiografia de que as imagens circulavam nos territórios da monarquia pluricontinental portuguesa. Muito se escreveu sobre os usos e as apropriações das gravuras, todavia, poucos explicaram as razões que levaram os pintores na América portuguesa a adotar como tipos iconográficos as gravuras que circulavam no reino de Portugal e seus domínios. O presente artigo busca aprofundar a discussão sobre a circularidade dessas imagens na América portuguesa setecentista tendo como ponto de partida o acervo iconográfico da Igreja da Ordem Terceira Carmelita do Recife, Capitania de Pernambuco, com especial atenção para as obras de João de Deus e Sepúlveda.
Presença espanhola na cidade da borracha
Authors: Pinheiro Maria Luiza Ugarte
Published: August 2021

Pretendemos explorar neste artigo a presença espanhola no Amazonas a partir, principalmente, dos periódicos produzidos por essa comunidade na cidade de Manaus, tentando perceber as dimensões de sua diversidade étnica, as ações e as atividades que empreenderam na cidade e que estruturaram o processo de integração e de assimilação deles no interior da sociedade amazonense.
Enfrentando a berlinda
Authors: MARTINS VIANA JÚNIOR MÁRIO , Gilberto Ramos Nogueira Antônio
Published: August 2021

A experiência interventiva em comunidades rurais cearenses, a partir do trabalho com a metodologia do Inventário Participativo e do debate em torno de categorias como memória, patrimônio e identidade, se constitui em mote privilegiado para refletirmos sobre os usos presentes do passado na produção de narrativas pelos movimentos sociais. A primeira parte do artigo identifica e analisa problemáticas concernentes à região do Médio Jaguaribe cearense, com foco nas comunidades rurais do município de Potiretama. Em seguida, escrutinando os problemas oriundos da construção da Barragem do Figueiredo, interpomos algumas questões em relação às possibilidades do ofício do historiador, possuindo como eixo a pergunta: é possível avançarmos da postura analítica para a propositiva no campo histórico/historiográfico? Considerando a contribuição do patrimônio cultural como uma variante de apropriação do passado e sua transmissão, demonstramos as possibilidades de usos públicos da História e suas formas de apresentação que, neste caso, auxiliaram nos processos de luta e resistência das populações do campo, tais como: a construção de museu comunitário, criação de trilhas históricas e arqueológicas, oficinas de pintura e audiovisual, entre outros.
Nicanor Parra
Authors: Vargas Sebastião
Published: August 2021

O pensamento e obra de Nicanor Parra podem ser lidos como uma incisiva expressão do pensamento crítico latino-americano: crítica da eficácia dos grandes projetos e narrativas da modernidade. Representam também uma tentativa de vitalizar e subverter os meios e modos do debate público sobre a política, a história, a arte e a vida através da expressão poética, mesmo que esta tenha de se tornar antipoética. Utilizando vários suportes documentais (produção literária, discursos, entrevistas e testemunhos), este artigo pretende explorar os caminhos e papéis assumidos pela antipoesia nas arenas culturais (chilenas e latino-americanas) e relacionar a obra de Nicanor Parra com certos meios catalisadores de demandas políticas e sociais do tempo presente.
História Pública, História em Quarentena e Ditadura
Authors: Brito Antonio Mauricio Freitas , Da Cruz Alves Iracélli , Rosa da Rocha Rafael
Published: August 2021

Este artigo explora o acervo do Projeto História em Quarentena – iniciativa de história pública divulgada através da internet. Praticada durante a pandemia da Covid-19 como parte do repertório da História Pública, a experiência deixou um legado de aproximadamente 150 horas de material gravado disponibilizado no Facebook e Youtube. O conteúdo produzido evidencia o potencial do projeto para o ensino e a pesquisa histórica a respeito de questões socialmente vivas. Com base nesta lógica, selecionamos a série de vídeos “Mitos da Ditadura” no Brasil. Nossa abordagem consistiu na sistematização dos principais “mitos” que aparecem no debate e como a historiografia tem contribuído na sua problematização. Além disso, refletimos sobre as agendas de pesquisa suscitadas pelas discussões. O Projeto História em Quarentena é um laboratório para reflexão sobre possibilidades e dilemas da divulgação científica e sua conexão com a história pública.
Projetos editoriais e mediações do passado
Authors: Perli Fernando
Published: August 2021

As revistas de divulgação histórica tornaram-se instrumentos de difusão de representações do passado que alcançaram um público mais amplo que o acadêmico. Em uma diversidade de suportes impressos na cultura contemporânea, algumas publicações foram objetos de críticas por fugirem às regras da história constituída nos rigores e rotinas de métodos historiográficos, enquanto outras foram reconhecidas pela divulgação de pesquisas de universidades para o grande público, promovendo debates sobre o lugar social da produção histórica. No Brasil, ao que foi entendido como demanda social por história no início do século XXI, para além de projetos editoriais isolados, as revistas de divulgação histórica inseriram-se num conjunto de produções congêneres de outros países. Assim, neste artigo, propõe-se um mapeamento de revistas considerando implicações da história de difusão massiva no campo historiográfico e a experiência brasileira de impressos que potencializaram o debate sobre mediações do passado entre historiadores acadêmicos e o público não especializado.
Por uma história pública
Authors: Pereira Lucas Carvalho Soares de Aguiar
Published: August 2021

Resenha do livro MAUAD, Ana Maria; SANTIAGO, Ricardo; BORGES, Viviane Trindade. Que história pública queremos?: What Public History do we want? São Paulo: Letra e Voz, 2018.
Az achondroplasia a fogszabályozás szemszögéből
Authors: Gurdán Zsuzsanna , Szalma József , Benedek Pálma
Published: August 2021

Összefoglaló. Az achondroplasia kialakulásáért az
FGFR3-gén mutációja tehető felelőssé, mely a porc
növekedési lemezében található chondrocyták érésében okoz zavart. Az
esetbemutatásban szereplő lánygyermeknél a születést követő első hónapban a
klinikai, laboratóriumi és röntgenvizsgálatok alapján achondroplasia
igazolódott. A klinikai tünetek közé tartoznak a rövid végtagok – különösen a
proximalis szegmensben –, a macrocephalia, a hypotonia és a horkolás. Szembetűnő
a középarc hypoplasiája. A középfül diszfunkciója tovább súlyosbítja a kórképet,
sok esetben megfigyelhető a hallás nagyfokú csökkenése, illetve kezelés
hiányában akár a hallás elvesztése. A közlemény részletesen bemutatja az
obstruktív alvási apnoe szindróma diagnózisrendszerét és kezelési alternatíváit,
hangsúlyozva az orthodontiai szempontokat. A fül-orr-gégészeti és a
fogszabályozó terápiának köszönhetően, a diagnózistól számított harmadik évre,
az alvási apnoe szindróma megszüntetésével a folyamatos pozitív nyomású
lélegeztetést el lehetett hagyni. A horkolás és az alvási apnoe szindróma
kezelése napjainkban egyre nagyobb hangsúlyt kap, melynek komplex kezelésében a
fogszabályozás is jelentős lehet. A harmonikus együttműködés és teamkezelés
betegünknél jelentős életminőség-javulást eredményezett. Orv Hetil. 2021;
162(17): 683–688.

Summary. Development of achondroplasia is due to the mutation of
FGFR3 gene, which disrupts the maturation of chondrocytes
found in the growth plate. The diagnosis of the girl in the present case study
was established based on clinical symptoms, laboratory tests and X-ray imaging
in the first month following childbirth. Clinical symptoms include shorter limbs
especially in the proximal segments, macrocephaly, hypotonia and snoring.
Hypoplasia of the midface is apparent. Dysfunction of the middle ear further
worsens the condition, in many cases severe hearing loss and, without treatment,
even deafness can be observed. The publication describes the diagnostic criteria
and therapeutic options of obstructive sleep apnea syndrome in detail, with an
emphasis on the orthodontic aspects. A comprehensive combined three-year
oto-laryngological and orthodontic treatment finally succeeded in controlling
the sleep apnea syndrome and it was possible to discontinue the continuous
positive airway pressure therapy by the end of the orthodontic therapy.
Nowadays, even more alternative therapeutic approaches are available to treat
snoring and sleep apnea syndromes, in which the role of orthodontics must not be
neglected. Harmonic collaboration and team work treatment resulted in a
significant improvement in the quality of life of our patient. Orv Hetil. 2021;
162(17): 683–688.
Hodgkin-lymphomához társult eltűnőepeút-szindróma
Authors: Boldizsár Szandra , Rottek János , Schneider Tamás , Varga Fatima , Szaleczky Erika
Published: August 2021

Összefoglaló. Az eltűnőepeút-szindróma ritka, rossz prognózisú
kórkép. Az epeutak progresszív destrukciójával, az intrahepaticus epeutak
eltűnésével jár, epepangáshoz, biliaris cirrhosishoz, végül májelégtelenséghez
vezet. A háttérben álló kiváltó okok között infekciók, ischaemia,
gyógyszermellékhatások, illetve daganatos megbetegedések szerepelhetnek. A
malignitások közül a leggyakrabban a Hodgkin-lymphomához társult formájával
találkozhatunk. Cikkünkben egy fiatal, Hodgkin-lymphomás betegünk esetét
szeretnénk bemutatni, akinél az icterus hátterében eltűnőepeút-szindróma
igazolódott, melyet egyéb okok kizárását követően szövettani mintavétellel
igazoltunk. A két ciklus ABVD-protokoll szerinti kezelést követő PET/CT az
alapbetegség tekintetében komplett metabolikus remissziót igazolt. A klinikai
javuláshoz azonban hosszú hónapokra volt szükség. Végül az epeúteltűnés
esetünkben reverzibilis folyamatnak bizonyult, az alapbetegség tekintetében a
komplett metabolikus remisszió elérésével az epeút-károsodás megállítható volt.
Orv Hetil. 2021; 162(22): 884–888.

Summary. destruction and loss of the intrahepatic bile ducts leading
to cholestatis, biliar chirrosis and finally liver failure. It has been
described in different pathologic conditions including infections, ischemia,
adverse drug reactions and malignancies. The Hodgkin’s lymphoma-associated type
occurs most frequently among the forms of the disease of malignant origin. In
this report, we introduce the case of a 32-year-old male patient with Hodgkin’s
lymphoma, diagnosed with vanishing bile duct syndrome upon liver biopsy as a
root cause behind his icterus. The PET/CT has proven complete metabolic
remission after 2 cycles of ABVD chemoterapy. Clinical improvement, however,
occurred only after several months. Finally the loss of bile ducts proved to be
a reversible process, the complete metabolic remission of Hodgkin’s lymphoma
resulted in the regeneration of the bile ducts. Orv Hetil. 2021; 162(22):
884–888.
A nemi kisebbségekhez tartozó személyek orvosi ellátásának aktuális kérdései
Authors: Somorjai Noémi
Published: August 2021

Összefoglaló. Az elmúlt 40 évben a nemi kisebbségek speciális orvosi
ellátásához szükséges kutatások elterjedése és a publikációk folyamatos
növekedése figyelhető meg a külföldi orvosi adatbázisokban. A nemi vonzalom és
identitás sajátosságai nagyban befolyásolják a helyes diagnózis felállítását, a
szükséges kezelések és szűrések meghatározását, valamint a magas öngyilkossági
veszélyeztetettség miatt a prevenciós beavatkozási pontok körét is. Az orvosi
adatbázisokon kívül orvosszakmai szervezetek és oktatási-kutatási hátterű
klinikai intézmények is számos bevált gyakorlatról és irányelvről adnak
tájékoztatást. A szükséges ismeretek bővítésén túl előremutató lehet a nem
tudatos előítéletek csökkentése és az orvos-beteg kommunikáció elmélyítése. Orv
Hetil. 2021; 162(32): 1267–1274.

Summary. In the past 40 years, research studies related to the
special healthcare for sexual and gender minorities have become widely known and
the number of publications has increased in international medical databases. The
characteristics of gender attraction and identity have an impact on developing a
successful diagnosis, on determining the necessary screenings and treatments,
and on performing preventive intervention since the sexual and gender minorities
are at elevated risk for suicide. Apart from medical databases, best practices
and guidelines are also provided by healthcare professional organizations and
clinics committed to education and research as well. In addition to broadening
knowledge, reducing unconscious prejudices and improving the doctor-patient
communication would lead to a veritable leap forward in meeting the healthcare
needs of sexual and gender minorities. Orv Hetil. 2021; 162(32): 1267–1274.
Az Alzheimer-kór heterogenitása
Authors: Balázs Nóra , Kovács Tibor
Published: August 2021

Összefoglaló. A neurodegeneratív betegségek között az Alzheimer-kór
a leggyakoribb kórforma. Morbiditása és mortalitása világszerte egyre gyorsabb
ütemben növekszik, ezáltal szociális és gazdasági hatása is folyamatosan
fokozódó terhet jelent a társadalomra. Az elmúlt néhány évtizedben jelentős
előrelépés történt az Alzheimer-kór megismerésében, számos biomarker támogatja a
diagnózis felállítását, tüneti terápiát szolgáló gyógyszerek kerültek
bevezetésre. Az Alzheimer-kór klinikai megjelenése, lefolyása, viselkedése
rendkívül változatos képet mutat, felismerése a rendelkezésre álló eszközök
ellenére is kihívást jelenthet a nagy tapasztalattal bíró klinikusok számára is.
Munkánk céljául tűztük ki, hogy összefoglaljuk az Alzheimer-kór genetikai,
patológiai és klinikai jellemzőit, segítve ezzel a betegség jobb meg- és
felismerését. Bemutatjuk a jelenleg érvényben lévő patológiai és klinikai
irányelvek kritériumrendszereit, az újabb klasszifikációs szemléleteket.
Részletesen ismertetjük az Alzheimer-kór heterogenitását genotípus és fenotípus
szintjén egyaránt. Elemezzük a típusos és atípusos megjelenési formák
jellemzőit, a társuló kórállapotoknak a megjelenésre és a progresszióra
gyakorolt hatását. Orv Hetil. 2021; 162(25): 970–977.

Summary. Alzheimer’s disease is the most prevalent neurodegenerative
disorder. Morbidity and mortality of Alzheimer’s disease are increasing
worldwide causing important social and economic burden on the society. Over the
past few decades, significant progress has been made in the understanding of the
pathogenesis of Alzheimer’s disease, several biomarkers support the diagnosis
and drugs for symptomatic therapy had been introduced. The clinical
manifestations and the course of Alzheimer’s disease have a variable picture, so
– despite the diagnostic opportunities – its diagnosis could be a challenge for
highly experienced clinicians as well. The aim of our work was to summarize the
genetic, pathological and clinical characteristics of Alzheimer’s disease, thus
helping to better understand and recognize the disease. We present the criteria
systems of the currently valid pathological and clinical guidelines with the
most recent classification approaches. The heterogeneity of Alzheimer’s disease
at both genotype and phenotype levels is described in detail. The
characteristics of typical and atypical manifestations and the effect of
co-pathologies on the appearance and progression of Alzheimer’s disease are also
discussed. Orv Hetil. 2021; 162(25): 970–977.