bluuebunny/crossref_metadata_2025 huggingface dataset:
Dynamics of magnetic flux tubes in accretion disks of Herbig Ae/Be stars
Authors: Khaibrakhmanov Sergey A. , Dudorov Alexander E.
Published: March 2022

The dynamics of magnetic flux tubes (MFTs) in the accretion disk of typical Herbig Ae/Be star (HAeBeS) with fossil large-scale magnetic field is modeled taking into account the buoyant and drag forces, radiative heat exchange with the surrounding gas, and the magnetic field of the disk. The structure of the disk is simulated using our magnetohydrodynamic model, taking into account the heating of the surface layers of the disk with the stellar radiation. The simulations show that MFTs periodically rise from the innermost region of the disk with speeds up to 10–12 km 

s

−
1

{{\rm{s}}}^{-1}

. MFTs experience decaying magnetic oscillations under the action of the external magnetic field near the disk’s surface. The oscillation period increases with distance from the star and initial plasma beta of the MFT, ranging from several hours at

r
=
0.012

au

r=0.012\hspace{0.33em}{\rm{au}}

up to several months at

r
=
1

au

r=1\hspace{0.33em}{\rm{au}}

. The oscillations are characterized by pulsations of the MFT’s characteristics including its temperature. We argue that the oscillations can produce observed IR-variability of HAeBeSs, which would be more intense than in the case of T Tauri stars, since the disks of HAeBeSs are hotter, denser, and have stronger magnetic field.
Green synthesis, characterization, cytotoxicity, and antimicrobial activity of iron oxide nanoparticles usingNigella sativaseed extract
Authors: Al-Karagoly Hassan , Rhyaf Atiaf , Naji Hala , Albukhaty Salim , AlMalki Faizah A. , Alyamani Amal A. , Albaqami Jawaher , Aloufi Salman
Published: March 2022

Green synthesis of nanoparticles (NPs) is a more sustainable, safe, and environmentally friendly method. This study aimed to investigate the synthesis procedure of iron oxide nanoparticles (IONPs) using the seed extract ofNigella sativa(N. sativa) as a strong reducing agent and to estimate their cytotoxic and antibacterial properties. The obtained IONPs were characterized by field-emission scanning electron microscopy, X-ray diffraction, dynamic light scattering (DLS), zeta potential (ZP), and Fourier-transform infrared spectroscopy analyses. The cytotoxicity of the biosynthesized IONPs was demonstrated by the MTT on a Vero cell line. Furthermore, the antibacterial activity of the fabricated biosynthesis metal oxide NPs was tested onEscherichia coli(E. coli) (ATCC 35218) andStaphylococcus aureus(S. aureus) (ATCC 29213) bacterial strains using the Kirby–Bauer disk diffusion method. This study showed the formation of a well-dispersed, highly stable (ZPζ= −51.8 mV) IO NPs with an average diameter of about 31.45 nm. Moreover, the biosynthetic NPs (IONPs) exhibited a significantly noncytotoxic effect when analyzed by the MTT assay. The biosynthetic NPs (NS-IONPs) exhibited excellent antibacterial activity againstE. coliandS. aureus, where the inhibition zones were 12.34 ± 0.58 and 11.52 ± 0.58, respectively.
Spontaneous rupturing of splenic artery aneurysm: Another reason for fatal syncope and shock (Case report and literature review)
Authors: Yuan Feng , He Liudang , Yao Zhengbin , Long Yong , Xu Shugen
Published: March 2022

Splenic artery aneurysm (SAA) is a rare condition; however, it is one of the most common intra-abdominal aneurysm. In the emergency department (ED), due to an uncommon cause of shock and syncope in SAA, it poses great diagnostic challenge for emergency physicians. Here we reported a case of spontaneous rupturing of SAA. A 47-year-old man presented to the ED for syncope and shock. As he had unstable hemodynamic, we gave him fluid resuscitation and point-of-care ultrasound (POCUS), free intraperitoneal fluid was identified on ultrasound, then hemorrhagic ascites was identified by a diagnostic abdominal paracentesis. The rare but life-threatening diagnosis of spontaneous rupturing of SAA was confirmed by contrast-enhanced Computed Tomography and surgery. Spontaneous SAA rupturing is a rare fatal condition which needs immediate diagnosis and management to achieve a favorable outcome. Though there are no risk factors, emergency physicians should consider SAA in the differential diagnosis of sudden collapse. Also, as an emergency physician, it is very important to be a master of first aid skills such as POCUS and treat patients according to the process.
TCD hemodynamics findings in the subacute phase of anterior circulation stroke patients treated with mechanical thrombectomy
Authors: Wu Tingting , Shi Zongjie , Chen Bo , Geng Yu , Pan Jie
Published: March 2022

Despite mechanical thrombectomy, the prognosis for many patients with anterior circulation ischemic stroke (ACIS) remains poor. This retrospective study reports consecutive mechanical thrombectomy procedures for ACIS at our hospital over 4 years. Hemodynamics were explored using transcranial Doppler ultrasound. The functional outcome was assessed using the modified Rankin scale. A total of 121 eligible cases were included: 61 (50.4%) exhibited good outcomes (modified Rankin scale score ≤2) by day 90. The logistic regression analysis showed that ipsilateral middle cerebral artery (iMCA) systolic blood flow (SBF) (OR = 0.983, 95% CI: 0.969–0.997, P = 0.014), preoperative National Institutes of Health Stroke Scale (NIHSS)score (OR = 1.160, 95% CI: 1.067–1.261, P < 0.001), intracranial hemorrhage after therapy (OR = 19.514, 95% CI: 4.364–87.265, P < 0.001), and Alberta Stroke Program Early Computed Tomography Score (OR = 0.639, 95% CI: 0.416–0.981, P = 0.040) were independently associated with prognosis. The iMCA SBF and preoperative NIHSS score were significantly predictive of a good outcome in the receiver operating characteristic analysis. In conclusion, elevated iMCA SBF might be a prognostic indicator of a good 90-day outcome following endovascular treatment in ACIS patients treated with mechanical thrombectomy, but large prospective studies are mandatory to validate the findings of our study.
Pressure-exerted steady laminar flow of an incompressible fluid along a porous parallel-walled channel with an impermeable wall
Authors: Gazambeti Yvon , Ngo Nyobe Elisabeth , Lamara Maurice , Pemha Elkana
Published: March 2022

This paper is devoted to the pressure-exerted steady laminar flow of an incompressible Newtonian fluid along a parallel-walled horizontal channel with a porous upper wall and an impermeable lower wall. The fluid is sucked or blown through the porous wall, at constant and uniform velocity, orthogonally to the wall. At the same time, an external pressure gradient constant in time is applied between the two ends of the channel. The aim of this work is to determine and analyze the effects of the external pressure gradient on the flow, the suction/blowing velocity being kept constant. The two-dimensional configuration of the flow with zero-divergence velocity field allows the existence of the stream function given by a single nonlinear partial differential equation which replaces the Navier–Stokes equations and is called the vorticity equation. This latter equation is demonstrated by applying an unusual approach which uses the vector momentum equation in its general form. From the similarity-solutions assumption, it is shown that the vorticity equation leads to a two-point boundary value problem whose solutions are computed by means of a numerical shooting technique including the Newton–Raphson optimization algorithm. Physical understandings of the flow under consideration are derived from the results obtained.
Blood Flow Restriction Training for Individuals With Osteoarthritis
Authors: Dalton Benjamin , McDougle Jacob , Alesi Michaela , Pereira Daniel , Feito Yuri
Published: March 2022

Research suggests that healthy eating and exercise decrease the likelihood of developing osteoarthritis (OA) with age. Despite this, OA is a prevalent chronic condition that typically causes joint pain at rest and during exercise, making it difficult to develop effective training programs. Recently, blood flow restriction (BFR) training has shown to be a beneficial alternative to traditional resistance training to improve muscle function. In this article, we provide a rationale as to how BFR may be a beneficial resistance training alternative that would allow individuals with osteoarthritis to experience similar improvements in muscle function compared with traditional resistance training using lower relative intensities.
Fabrication of Complex Geometries of High-Purity Copper with Superior Thermal Performance
Authors: Synnestvedt Sarah , Harry Katherine , Bodla Karthik , Pelletier Etienne , Bouchemit Arslane , Nobari Amir
Published: March 2022

This technical paper outlines a digital light processing (DLP) technique that can produce geometrically complex, highly conductive, pure copper parts. By incorporating a high-purity, high-sphericity copper powder into the DLP feedstock and optimizing the DLP printing and sintering process parameters, parts made with this technique achieve electrical conductivities greater than 92% (International Annealed Copper Standard) and negative and positive feature sizes down to 100 µm. As demonstrated by computational fluid dynamics modeling, the resulting copper cold plates exhibit superior thermal performance with an additional 4°C of cooling compared to traditionally manufactured cold plates.
RESEARCH ON THE MACRO NET FINANCIAL ASSETS VALUE EFFECT OF MONETARY POLICY
Authors: Wang Xiaoting , Shen Peilong , Palečková Iveta
Published: March 2022

This paper focuses on the impact of Chinese and US monetary policy on the net financial assets value of macro balance sheet from both theoretical and empirical aspects and reveals the sectoral solvency risk conduction path based on the balance sheet channel. In addition, the paper is focused on the effects of the interest rate as a target tool for monetary policy on the macro net financial assets. In the theoretical analysis, the net present value model of the economy is constructed, and a general equilibrium model representing the relationship between the real interest rate and net asset value of five sectors is derived (government, financial, resident, enterprise and central bank sector). This model explains the basic principle how interest rates affect net financial assets values. The dataset includes the central bank, commercial banks and shadow banks, and the stock and equity liabilities of the debtor are taken as the net asset of financial institutions during the period 2000–2016. The empirical results show that an increase in the real deposit interest rate improves the net financial assets value of the four sectors, and an increase in the real loan interest rate reduces the net financial assets value of the four sectors, while the effect of the real loan interest rate is greater than the real deposit interest rate. The effect ranking of interest rates on the four sectors is financial, enterprise, government, and resident sector. Overall, loose monetary policies can reduce macro-financial risks through the balance sheet channel, while the negative effects of long-term low-interest policies should be prevented; the macro-policies should hedge sectoral risks triggered by the exit of the easing policy via the macro balance sheet channel.
Competência fonológica em português língua não materna: os róticos
Authors: Almeida Santos Isabel
Published: March 2022

A persistência de uma pronúncia não nativa é um facto reconhecido no âmbito da investigação em aquisição / aprendizagem de língua não materna. Entre os fatores que o explicam, e independentemente dos diferentes quadros teóricos, o conhecimento linguístico prévio ocupa um lugar de destaque. Em causa estão não só os condicionamentos relacionados com as habilidades articulatórias já treinadas, mas também, e sobretudo, a capacidade de reconhecer/definir (novos) alvos com exatidão. Neste trabalho pretende contribuir-se para uma descrição da interfonologia de três grupos de aprendentes que têm como língua materna o espanhol, o italiano e o francês. Mais especificamente, em causa está uma área do sistema fonológico consonântico em que estas três línguas se distinguem entre si e se diferenciam do português: os róticos. Os dados foram recolhidos num corpus de produções orais, tendo sido analisados os níveis de convergência e de desvios. Os resultados mostram padrões diferenciados para os três grupos de informantes e comportamentos distintos também em função do contexto sintagmático em que surge a consoante.
Estabilidad de Voltaje de Largo Plazo en Sistemas Eléctricos de Potencia Usando Modelos de Carga
Authors: Barrera-Singaña Carlos , Tirira Chulde Ruben
Published: March 2022

La estabilidad de voltaje es un tema fundamental en el estudio y análisis de todos los sistemas de potencia, por lo cual en el presente trabajo se trata esta problemática utilizando el método de la continuación aplicado a los flujos de potencia (CPF, por sus siglas en ingles), al cual mediante la reformulación de potencias especificadas se procede a incluir ecuaciones que representan los diferentes modelos de carga. Con esto se busca realizar una comparación de los puntos de colapsos obtenidos con y sin modelos de carga, de esta manera poder analizar las diferencias que se presentan entre los dos resultados. Las pruebas del estudio se realizan mediante un código realizado en Matlab, el cual utiliza los datos del sistema IEEE de 9 barras. Este código permite obtener la curva PV de la barra a ser analizada, dando como resultado el punto de colapso obtenido sin incluir un modelo de carga y el punto de colapso con modelo de carga. En base a esto se pudo realizar una comparación entre un análisis de estabilidad de voltaje utilizando el método CPF convencional y otro en el cual se incluya modelos de cargas.
La imagen de la ciudad de Lima en Cuán impunemente se está uno muerto de Wáshington Delgado
Authors: Hualpa Benavides Paul Deyvid
Published: March 2022

El presente trabajo de investigación está enfocado en analizar la representación de la ciudad de Lima y la atmósfera mortuoria que se recrea en dicho espacio en el poemario Cuán impunemente se está uno muerto de Wáshington Delgado. Como hipótesis de trabajo planteamos que dicha atmósfera mortuoria afecta tanto la representación de los individuos como la del propio espacio urbano. Asimismo, consideramos que dicha representación de la ciudad de Lima tiene como finalidad cuestionar los proyectos políticos que se han planteado desde su fundación. Por otro lado, nuestro estudio abordará el tema de la ciudad capital como un espacio desde cual se inscribe una poesía de carácter social que cuestiona y critica su entorno. Nuestro trabajo de análisis sigue los postulados de la Retórica General Textual. Asimismo, hemos empleado la tipología de metáforas desarrolladas por Lakoff y Johnson para estudiar la conceptualización que se da de nuestra ciudad capitalina.
Hugo Chacón Málaga. Manifiesto andino para el Bicentenario. Lima: Aleph impresiones, 2021, 78 pp.
Authors: Manco Ramos Félix
Published: March 2022

Durante estos doscientos años de nación republicana, en el Perú no han dejado de aparecer voces críticas sobre nuestra identidad colectiva. La esperanza de crear una verdadera nación peruana que integre a todos sus habitantes ha nutrido diversos grupos sociales, académicos, políticos, religiosos etc. Sin embargo, los ideales aún se quedan en el papel o en el grito de la masa ya que suelen ser utopías y justificaciones de los administradores del poder. El Perú es un país que aún no posee ideales comunes ni sociedad cohesionada. Esta falta de identidad y unidad son la base de la inestabilidad permanente. Entonces: ¿qué más hacer para el Perú?, ¿qué camino seguir para crear una identidad?, ¿una nación peruana en una sociedad pluricultural y en contexto de globalización?, ¿cómo superar la dicotomía criollo y andino?
PEMAHAMAN SISWA TENTANG MANAJEMEN KARIR PASCA LAYANAN INFORMASI KARIR DI MAN 2 BATUSANGKAR
Authors: Wahyuni Roza Sri , Yuliani Tri
Published: March 2022

This study aims to determine students' understanding of career selection after obtaining information services including career selection on sub-variables of motivation, knowledge, personality, abilities. One of the uses of the results of this study is as information for students, lecturers, teachers, students, and readers on how students' understanding of career selection in MAN 2 Batusangkar. The research method used in this study is the method of "Field Research" (field research) that is descriptive quantitative. The population in this study were students of class XII MAN 2 Batusangkar, totaling 256 people. The sample in this study were all students of class XII IS 1, amounting to 31 people in MAN 2 Batusangkar. The results showed that the understanding of students of class XII MAN 2 Batusangkar about career selection most students understood that the career would be continued at the College or Occupation and there were still a few who understood enough about the motivational factors that were lacking from individuals to choose the career they would choose for the future
STRATEGI KEPALA SEKOLAH DALAM MEMBINA HUBUNGAN DENGAN KOMITE SEKOLAH
Authors: Jannah Miftahul , Hidayati Hidayati , Awida Awida
Published: March 2022

The purpose of this study was to determine the principal's strategy in carrying out relations with the school. The research that the author did was using a qualitative approach. The subjects of this study were the principal, committee and parents of students at SMA Negeri 01 District VII Koto Sungai Sarik in the course of collecting data, the authors used interviews, observation, and documentation methods. While the data analysis technique by means of data reduction, data presentation, and drawing conclusions. The results show that: the relationship between the principal and the committee has been going well and smoothly, and also between the school and the committee has been supportive in advancing the school, as evidenced by the strategy carried out by the principal, namely, ( a) Always maintain communication with the committee and the community around the school, (b) Maintain a cooperative relationship with the committee and also involve the committee in school activities, (c) always apply transparency to the community. The role of the committee at SMA Negeri 01 Kecamatan VII Koto Sungai Sarik, namely (a) the School Committee as a giver of considerations, (b) the Committee as a supporter of educational service activities, (c) the school committee as a controller of educational service activities, (d) School committee liaison or hook communication between the community and the government
Analysis of Cultural Content Represented in “Bahasa Inggris Untuk Siswa Smp – Mts , Written By Debi Karmila And Ratna Juwita Ningsih” for Seventh Grade Students of Junior High School School
Authors: Watan Taufik Hidayat
Published: March 2022

Language and culture are interrelated. Having communicative competence may require students to understand the culture. Textbooks can effectively teach students cultural knowledge because it is easy to say that textbooks had a crucial role in EFL teaching. The study investigates the cultural content of the English textbook “Bahasa Inggris Untuk Siswa Smp – Mts, Written By Debi Karmila And Ratna Juwita Ningsih” for seventh-grade students of junior high school. The purpose of this study is to explore which culture is expressed and how it is expressed in textbooks. In this study, descriptive qualitative methods for textbook analysis used content analysis in particular. The study additionally used the two frameworks of cultural types Cortazzi and Jin (1999) and the frameworks of Adaskou, Britten, and Fahsi (1990) on cultural sensitivity. As a result of analyzing the textbook, the researcher finds two things. First, Bahasa Inggris Untuk Siswa Smp-Mts., Which is predominantly shown through the source culture (39%) compared to the target (6%) and international culture (9%(. Second, culture was mostly being expressed by a pragmatic sense (36%) compared to the aesthetic (3%), semantic (2%), and sociological (24%) senses of the textbook. Based upon the findings, this study suggests that authors of English textbooks include a presentation of a balance between source culture, target culture, and international culture.
Implementation Of Talking Stick Technique In Teaching English Speaking At X Grade Students Of Smkn 1 Solok
Authors: Putri Vira Milya
Published: March 2022

The implementation of interesting learning techniques by the teacher can help students to be more enthusiastic about learning to speak English. One of them is with the teacher implementing the talking stick technique in learning to speak. The researcher found that the teacher who had applied the talking stick technique in learning to speak English was the teacher at the 1 Solok vocational high school. The object of this research is to analyze how the English teacher applies the talking stick technique in teaching speaking in the tenth grade of SMKN 1 Solok based on the steps and procedures of Helman's theory of Talking Stick. In this study, the researcher used a qualitative descriptive study in which the researcher analyzed 1 English teacher in applying the talking stick technique in learning to speak through four meetings. In collecting data, the researcher used the instrument of observation checklist, field notes, video and also documentation. Based on the results of observations that have been made by researchers on teachers who apply talking stick learning techniques in learning speaking with reference to the steps and procedures of Helman's theory (2009), in three meetings it can be found data from the steps and procedures in implementing the talking stick technique by teachers who have been implemented are categorized as very good with an average value of 3 meetings, namely 19, 6 because it lies in the score range 19, 6-24. Related to this, the teacher in implementing the talking stick technique is in accordance with Helman's theory which the researcher studied from one teacher in grade ten at a vocational high school 1 Solok.
TYPES OF QUESTIONS USED BY ENGLISH TEACHERS AT SMP MUHAMMADIYAH 5 PADANG
Authors: Relly Sisma
Published: March 2022

Class interaction is part of the communication between teachers and students that occurs in the class. To interaction with student in the classroom, should have conversation are the teacher and student. Interaction occurs when teachers and students have the same opportunity to talk in class. However, most classroom interactions are dominated by teacher talk. Therefore, as a teacher, choosing the type of conversation is important. As a type of teacher talk, the use of teacher questions is considered an appropriate way to encourage student responses while creating balanced interactions in the classroom. This is what influenced the researchers to conduct research at SMP Muhammadiyah 5 Padang, namely grade 8. The teacher in the class had difficulty interacting with students in the classroom. Therefore, he always tries to ask students questions to encourage student responses to create interaction in the classroom. This study is aimed to find out: first, the types of question used by English teacher at SMP Muhammadiyah 5 Padang. Second, The relation of questions to classroom interaction. To achieve that goal, the researcher used a qualitative method by conducting classroom observations, recording, and interview English teachers at SMP Muhammadiyah 5 Padang. The research shows that there are 32 questions in 2 hours of learning. Of the 32 questions,
Literary Works in the Ural Newspaper (1897–1908): Editorial Policy and Genre-Thematic Features
Authors:   Ural Federal University, Yekaterinburg, Russia, Kozlov Ilia V.
Published: March 2022

The purpose of this article is to define the artistic and extraliterary features of the literary section of one of the first and most significant private newspapers of Ural Region at the turn of the twentieth century. The conclusions of the article are based on the genre attribution of works published in the newspaper (a poetic legend, feuilleton, soldier’s tale), the correlation of these works with the sociocultural and geographical contexts, and the peculiarities of the authors’ biographies. The article notes an attempt to correlate heterogeneous phenomena in the literary section made by the editorial board of the newspaper. It is important because of the peculiarities of the newspaper’s circulation at that time and the awareness of the geographical position of the Urals as a “middle” region. In the newspaper, there are themes, plots, genres of works of Western European literature and the East, the fate of authors, actively moving to the east (Siberia, the Far East) and to the west, newspaper, and literary texts proper. The editorial policy for Ural was formed along the lines of the coexistence of different esthetic and political views. This was due to the extraliterary peculiarities of the newspaper’s circulation at the turn of the century and the need to attract the attention of readers by any means to provide financial success. In the study, the author applies the genre and motif analysis of literary works. The conclusions are based on a wide literary and illustrative material of the Ural newspaper and other newspapers of Ural Region, the memoirs of contemporaries, and archival materials. The characteristic features of literary critical materials published in the Ural newspaper confirm the features of the editorial policy indicated: an appeal to contemporary authors and authors of the past and to works whose authors had different aesthetic views. As a result, the author of the article concludes about the medial position of the literary department of the Ural newspaper, uniting literary works that are diametrically opposed in sociocultural, aesthetic, and geographical terms.
Soviet Person: A Look from the Outside and the Inside. Review of: Amirov, V. M., Antoshin, A. V., Bortnikov, V. I., et al. (2021). Homo soveticus: pro et contra. Ekaterinburg: Ural University Press. 412 p.
Authors:   Ural Federal University, Yekaterinburg, Russia, Likhacheva Liliya S. , Kapkan Maria V. ,   Ural Federal University, Yekaterinburg, Russia
Published: March 2022

This review considers a monograph published in 2021 by Ural Federal University. The research of scholars from different countries (Russia, Hungary, Czech Republic, and Poland) is devoted to the study of the phenomenon of the Soviet person in various contexts and dimensions. The monograph contributes both to the theoretical understanding of the phenomenon of the Soviet person and to the analysis of its manifestations in social, cultural, and artistic life. The combination of various research positions and strategies makes it possible to create a multidimensional and ambiguous image of homo soveticus seen by bearers of Soviet culture and outside observers. The review provides an analysis of the main sections of the monograph, identifies the most promising problems for further study of this topic, evaluates the originality of the work, and identifies controversial issues that stimulate discussions.
Human identification using finger knuckle features
Authors: Sahan Ali Sahan , Jabr Nisreen , Bahaaulddin Ahmed , Al-Itb Ali
Published: March 2022

Abstract Many studies refer that the figure knuckle comprises unique features. Therefore, it can be utilized in a biometric system to distinguishing between the peoples. In this paper, a combined global and local features technique has been proposed based on two descriptors, namely: Chebyshev Fourier moments (CHFMs) and Scale Invariant Feature Transform (SIFT) descriptors. The CHFMs descriptor is used to gaining the global features, while the scale invariant feature transform descriptor is utilized to extract local features. Each one of these descriptors has its advantages; therefore, combining them together leads to produce distinct features. Many experiments have been carried out using IIT-Delhi knuckle database to assess the accuracy of the proposed approach. The analysis of the results of these extensive experiments implies that the suggested technique has gained 98% accuracy rate. Furthermore, the robustness against the noise has been evaluated. The results of these experiments lead to concluding that the proposed technique is robust against the noise variation. Keywords: finger knuckle, biometric system, Chebyshev Fourier moments, scale invariant feature transform, IIT-Delhi knuckle database.
Remote Sensing Image Classification Via Vision Transformer and Transfer Learning
Authors: khan Muhammad , Rajwana Muhammad
Published: March 2022

Abstract Aerial scene classification, which aims to automatically tag an aerial image with a specific semantic category, is a fundamental problem for understanding high-resolution remote sensing imagery. The classification of remote sensing image scenes can provide significant value, from forest fire monitoring to land use and land cover classification. From the first aerial photographs of the early 20th century to today's satellite imagery, the amount of remote sensing data has increased geometrically with higher resolution. The need to analyze this modern digital data has motivated research to accelerate the classification of remotely sensed images. Fortunately, the computer vision community has made great strides in classifying natural images. Transformers first applied to the field of natural language processing, is a type of deep neural network mainly based on the self-attention mechanism. Thanks to its strong representation capabilities, researchers are looking at ways to apply transformers to computer vision tasks. In a variety of visual benchmarks, transformer-based models perform similar to or better than other types of networks such as convolutional and recurrent networks. Given its high performance and less need for vision-specific inductive bias, the transformer is receiving more and more attention from the computer vision community. In this paper, we provide a systematic review of the Transfer Learning and Transformer techniques for scene classification using AID datasets. Both approaches give an accuracy of 80% and 84%, for the AID dataset. Keywords: remote sensing, vision transformers, transfer learning, classification accuracy
Distraction of Children Undergoing Vaccination
Authors: Teles Graziele Lopes , Costa Júnior Áderson Luiz
Published: March 2022

Abstract Vaccination is a procedure considered painful for children; therefore, the healthcare team should provide conditions for adequate pain assessment and control. This study sought to evaluate whether behavioral distraction procedures contribute to reduce pain perception and anxiety indicators in children during vaccination. One hundred and four children between three and 12 years attending a Health Center in the Federal District participated in the study. Children were divided into four groups: baseline, groups with balloons, cards and tablets. Data were obtained by means of sociodemographic questionnaires, the Monica and Friends Pain Scale and the Observational Scale of Distress Behavior. The collected data were measured using the SPSS Statistics program. Results show that the intervention groups had lower averages, concerning pain levels, incidence of competing behaviors and duration of vaccine procedures, compared to baseline.
Analyzers of Support Practices in Humanization and Permanent Health Education
Authors: Fortuna Cinira Magali , Feliciano Adriana Barbieri , Silva Monica Vilchez , Kasper Maristel , Lettiere-Viana Angelina , Santos Karen da Silva
Published: March 2022

Abstract The National Policies of Humanization and Permanent Health Education (PHE) have shown advances and setbacks in their historical process. Some concepts from the theoretical framework of institutional analysis can contribute in these themes, such as the concept of analyzer. This article discusses the analyzers identified in an intervention research with professionals who work as supporters of humanization and/or articulators of PHE in municipalities of the state of São Paulo. The theoretical-methodological framework is the institutional analysis, socio-clinical line, focusing on the work of the analyzers. The intervention groups were composed of 30 participants. We highlight three analyzers: (1) the COVID-19 historical analyzer; (2) the time analyzer; (3) the silence analyzer. These analyzers evidence tensions such as: the peripheral place of primary care, discomfort in the face of “not knowing” and/or lethargy in the face of imposed non-doing, and the paradox of creating and interrupting both care actions and support for the teams.
Risk Factors for Working in Confined Spaces: Contributions for Psychosocial Assessment
Authors: Mombelli Monica Augusta , Reis Roberta Alvarenga , Zilly Adriana , Marziale Maria Helena Palucci , Braga Werner Olinto Amorim , Santos Claudia Benedita dos
Published: March 2022

Abstract The recommendation of standards for companies supports the safety of workers. This study aimed to describe the psychosocial risk factors perceived by personnel that work in confined spaces. Qualitative study, conducted via interviews with 50 employees. Data were processed using the Interface de R pour les Analyses Multidimensionnelles de Textes et de Questionnaires software, with a descending hierarchical classification. The psychosocial risk management model identified five risk dimensions and described the interface between the categories of work context and content: interpersonal relationships (29.58%), task planning (23.50%), role in the organization (17.83%), home-work interface (15.10%), and workload and work pace (13.97%). The risk factors identified from the workers’’ perspective allow reviewing psychosocial assessment, management practices, and the advancement of scientific knowledge, essential to rethink current legislation and mental health care for professionals that work in confined spaces.
Density effect of Polygonum ferrugineum Wedd. (Polygonaceae) and nutrients concentration of sediment on establishment of Alternanthera philoxeroides (Mart.) Griseb. (Amaranthaceae)
Authors: Vicente Abner José de Souza , Candido Leticia Figueiredo , Silveira Márcio José , Fidanza Karina
Published: March 2022

Abstract Aim The effects of neighbor’s species density and nutrient availability in the sediment are essential to understand the structuring rules of emergent macrophyte communities. The objective of this paper was to investigate how the density of Polygonum ferrugineum and the availability of nutrients in the sediment influence the establishment of Alternanthera philoxeroides. Methods After collection, we sectioned the stems of each species so that each propagule obtained was composed of two nodes. These propagules were planted in trays with moist sediment for rooting and development of new leaves for 24 days, and only then were transferred to the experimental mesocosms. Our experimental design had an A. philoxeroides propagule submitted to the following treatments: I – control (planted alone); II – associated with three P. ferrugineum propagules; III – associated with five P. ferrugineum propagules. There were 36 mesocosms arranged inside the greenhouse, with half of them representing conditions of low nutrient availability and half representing conditions of high nutrient availability (with 12.5 g of NPK in the sediment). The experiment lasted 60 days, and the following response variables were measured: aerial length, root length, aerial, root and total dry biomass. The response variables related to biomass were obtained after the plants were dried in an oven at 60°C. We also calculated the relative interaction index (RII) for each treatment, in order to analyze the interactions between the species. Each response variable was analyzed using a two-way ANOVA. Results Among the main results obtained, we can highlight the lower accumulation of biomass in A. philoxeroides under conditions of low nutrient availability and high density of P. ferrugineum. Conclusions These results indicate the negative effects of P. ferrugineum density on the establishment of A. philoxeroides, contributing to the understanding of the dynamics and structuring rules of the emergent macrophyte community.
Briefing: The 2021 Glasgow Climate Pact: steps on the transition pathway towards a low carbon world
Authors: Cohen Robert , Eames Philip C. , Hammond Geoffrey P. , Newborough Marcus , Norton Brian
Published: March 2022

This briefing reviews progress that was made at the 26th United Nations Climate Change Conference of the Parties (COP26) held in Glasgow, Scotland, UK over 1–12 November 2021. The context of the global climate change challenge is outlined, along with the aspirations of the major participating international groups. An overall balance sheet is provided that gives an assessment of the achievements and disappointments in the outcomes of COP26. This assessment sets a backdrop to what needs to be achieved when the Parties next meet at COP27 in Sharm El-Sheikh, Egypt in 2022 to address both immediate and longer-term climate change mitigation, adaptation and climate finance.
Preparation and characterization of silk fibroin/silica thermal insulation coatings on catheters
Authors: Gao Yuan , Jiang Miaowen , Bao Luzi , Yin Zhichen , Zhang Jicheng , Pan Guangzhen , Zheng Shiqiang , Zheng Yufeng , Wu Chuanjie , Li Ming , Ji Xunming
Published: March 2022

Clinical practice of therapeutic hypothermia for neuroprotection in acute cerebral ischemia has been hindered by the warming effect on the cold infusate along the pathway, which results from the poor thermal resistance of the traditional interventional catheter. In this study, thermal insulation coatings with different spray parameters and coating suspension compositions were prepared by air-spraying on a nylon substrate for biomedical application. The surface morphology and microstructure of coatings were investigated by scanning electron microscopy, X-ray diffraction and Fourier transform infrared spectroscopy. Silk fibroin (SF) and hollow silica-based nanospheres (HSBNSs) were successfully sprayed on the nylon substrate. The thermal conductivity of the coating measured by a light flash apparatus was down to 0.00105 W/(m K). The tape test indicated that the coatings containing SF, HSBNSs and glyceryl had good adhesion, showing that air-spraying is a promising method to enhance the thermal insulation performance of traditional catheters for cerebral hypothermia therapy.
El crowdlending como alternativa de financiamiento para las mipymes del Perú
Authors: Gómez Gerardo , Navarro Barranzuela Javier Antony , Marchena Ojeda Leslie Mariantuane
Published: March 2022

El contexto actual en que se desenvuelven las empresas ha propiciado que el financiamiento sea ofertado de una manera distinta al tradicional. La tecnología ha permitido que aparezcan alternativas de inversión y financiamiento que seorientan a disminuir los costos financieros y el acceso al crédito por parte de las mipymes en el Perú y América Latina. El objetivo de esta investigación fue establecer si las mipymes de la región Piura, Perú, están dispuestas a demandar financiamiento a través del crowdlending. La hipótesis pretendía confirmar que las mipymes están dispuestas a demandarfinanciamiento a través del crowdlending. Para contrastar esta hipótesis se aplicaron 382 encuestas a las mipymes de las diferentes provincias de la región Piura. La investigación fue de carácter cuantitativo, descriptivo y longitudinal. Se recogieron las percepciones de los empresarios de las mipymes con respecto al crowdlending desde la perspectiva de los costos financieros, la rapidez de acceso al crédito y la flexibilidad de condiciones del crédito. El desconocimiento de estasalternativas de financiamiento y la desconfianza en las transacciones virtuales pudieron condicionar las respuestas. Los resultados demostraron que la mayoría de los empresarios están dispuesto a demandar financiamiento a través del crowdlending, a pesar de que perciben que el acceso al crédito sería lento, el costo financiero bajo y que se daría una alta flexibilidad en las condiciones del crédito a demandar.
Role of autofluorescence technique in detection of mycobacterial bacilli on fine needle aspiration cytology in tubercular lymphadenitis in comparison to conventional methods
Authors: Kumar Sanjay , Gupta Ritika , Kaushik Nidhi , Kataria Sant Prakash , Singh Sunita
Published: March 2022

Background: Lymphadenopathy is the most common presentation of extrapulmonary tuberculosis. Fine needle aspiration cytology (FNAC) has emerged an important role in the evaluation of peripheral adenopathy as a possible non-invasive procedure. Conventional Ziehl-Neelsen (ZN) method for acid fast bacilli (AFB) plays an important role in the diagnosis and the monitoring of treatment in tuberculosis. Fluorescence microscopy using auramine-rhodamine (AR) or Papanicolaou (PAP) staining has been considered superior to ZN staining.Methods: The study was conducted in tertiary care centre for a period of 2 years. A total number of 75 patients were included in the study. Four smears made from each aspirate: three air dried smears were stained with Giemsa, ZN, and AR stains and one was wet fixed for PAP stain for autofluorescence. Aspirate sent for culture over Lowenstein-Jensen medium was taken as a reference method.Results: Seventy five aspirates reported as tuberculous lymphadenitis on cytomorphology were stained with various methods. Autofluorescence was of more diagnostic utility for detection of AFB when cytologically only necrosis (64.71%) or granulomatous lymphadenitis (42.11%) was seen. With necrotising granulomatous lymphadenitis reported cases, Auramine Rhodamine was positive in maximum cases (66.7%) and was significant statistically. Overall taking culture as gold standard ZN stain was most specific (100%) and Auramine Rhodamine was most sensitive (82%).Conclusions: There is a definite advantage of autofluorescence in detecting mycobacteria over Ziehl-Neelsen and auramine rhodamine stain as it is more sensitive as well as an inexpensive technique. Autofluorescence can be a useful addition to routine cytology for early diagnosis and effective treatment.
Conjunctival autograft for recurrent conjunctival granuloma
Authors: Kresentia Stevie , Surya Amir
Published: March 2022

Pyogenic granuloma is a benign vascular tumour that can arise from several reasons and tends not to transform into malignant. These tumours, which are more common in young people, may also recur. Just like in this case, a 39-year-old man came with a mass on his left eyeball that had been enlarged since two weeks ago. He also had a history of surgery on his left eye one month ago. From the examination results, the visual acuity was 5/5 and a 2mm, reddish, firmed border mass on the bulbar conjunctiva at the nasal area. He was diagnosed with conjunctival granuloma and we decided to do tumour excision and also histopathology examination. The histopathology results specified a granuloma. Three weeks later, there was the same mass growth but more prominent. We decided to re-excise with a conjunctival autograft and administered ophthalmic and oral steroids to minimize the recurrence. One month after surgery, the conjunctival graft had already fused with the surrounding conjunctiva without oedema, and five months later, no new granuloma growth was seen. This method can be considered for patient’s comfort and cosmetics but still requires further research and a larger number of samples to ensure the accuracy of the data.
Preliminary outcomes of the introduction of computer assistance in total knee arthroplasty at the Basse-Terre hospital center in Guadeloupe
Authors: Adébola Padonou , François Amossou , Pascal Chigblo , Eric Lawson , Aristote Hans-Moevi
Published: March 2022

Background: Computer-assisted total knee arthroplasty (TKA) is associated with significant precision during the surgical installation of prosthesis. We aimed to compare the radiological outcomes between the prostheses’ positioning assisted by a passive computer system and with the conventional technique.Methods: Participants included in this study were divided into two mixed groups based on the use of classical procedure and the computer navigated method during the positioning of implants during fractures. Clinical factors such as degrees of knee amplitude, knee IKS score and IKS function score and radiological features including the stage of osteoarthritis according to Ahlbäck classification, HKA and HKS angles, femoral and tibial mechanical axes, tibial slope prior and after the surgical procedure were measured in each group and then were compared.Results: Of a total of 92 patients, there were 63 women and 29 men; among which 42 patients for were treated with conventional TKA and 50 patients benefited from navigated TKA. 76 patients had stage IV osteoarthritis, 15 patients were at stage III of Albäck classification, and one patient at stage V. The postoperative HKA angle was found to be better in the navigated cohort with a statistically significant difference. The IKS knee and function scores are significantly better in the navigated cohort.Conclusions: Computer surgical navigation practiced during the total arthroplasty of the knee highlighted significant improvement in the positioning of the implants; and is associated with better functioning of the knees.
Prognostic value of neutrophil to lymphocyte ratio in acute gall stone and alcoholic pancreatitis
Authors: Varghese Sheeja , Rozario Anthony Prakash , Ashwath Giridhar , Ambrose Sherlyn
Published: March 2022

Background: Acute pancreatitis (AP) is associated with increased mortality. Many scoring systems have been used to predict the severity of acute pancreatitis but they are either time consuming or done after 48 hours of admission. The aim of the study was to evaluate the prognostic value of Neutrophil to lymphocyte ratio (NLR) in acute gall stone and alcoholic pancreatitis.Methods: 240 patients with acute pancreatitis were prospectively enrolled from December 2017 to December 2019 from the department of general surgery and gastroenterology at St. John’s Medical College, Bangalore. NLR obtained at admission were compared with other known prognostic scoring systems.Results: A total of 240 patients were studied with an etiology of gall stone (N=131) and alcohol (N=109). NLR (17.6±18.3 vs 8.7±8.4, p<0.001) were significantly high in gall stone pancreatitis group whereas high NLR were not related to severe AP in alcoholic AP. For gall stone pancreatitis group NLR demonstrated a predictive value and not in alcoholic AP.Conclusions: NLR can be used as a predictor of severity of acute pancreatitis, at the time of initial diagnosis. Our study demonstrated that NLR can predict the severity in gall stone pancreatitis.
Thyroid lipomatosis in a patient of post renal transplantation
Authors: Kalluri Meena R. , Balusu Kavya , Marda Sachin , Gowda Sreehari
Published: March 2022

Thyroid lipomatosis is a rare benign disease with very few cases available in literature. We report a case of a 48 year old Indian male who presented with progressive swelling in front of neck since 5 years and difficulty breathing in lying down position along with difficulty in swallowing for the last 2 months. He is a known case of post renal transplantation for chronic kidney disease due to secondary AA amyloidosis. Total thyroidectomy was done and histopathology showed diffuse thyroid lipomatosis, with no evidence of amyloid deposition or papillary carcinoma. Fatty tissue is not commonly detected within the thyroid gland. Here we have reviewed the literature and discussed various differential diagnosis of thyroid lipomatosis.