bluuebunny/crossref_metadata_2025 huggingface dataset:
STEADY-STATE THERMAL STRESS ANALYSIS OF GEARBOX CASING BY FINITE ELEMENT METHOD
Authors: PATEL P. D. , SHAH D. S.
Published: January 2021

This paper contains the gearbox casing analysis by finite element method (FEM). In previous study the thermal stresses have been affected on the performance of gearbox casing during the running conditions. So, this problem solve by thermal stress analysis method. Thermal stress analysis is the process of analyzing the effect of thermal and mechanical loads, and heat transfer of gearbox casing. In this paper, thermal stresses have been analyzed on gearbox casing, and thus temperature field has been coupled to the 3-Dimensional structure model using Fem. Paper also describes convection effect between the inner-surface of casing and the circulating oil which has been found small and thus neglected. Study of equivalent von-mises stresses in inner and outer gearbox casing with the coupled method has been done using ANSYS software. Result shows thermal stress analysis and deformation value under the action of force and heat. Result finds the thermal stress of the gearbox casing is 68.866 Mpa and 0.15434 mm for the deformation of the gearbox casing.
A PERFORMANCE EVALUATION OF LEAF SPRING REPLACING WITH COMPOSITE LEAF SPRING
Authors: NADARGI YOGESH G. , GAIKWAD DEEPAK R. , SULAKHE UMESH D.
Published: January 2021

The automobile industry has shown increased interest in the replacement of steel spring with fibre glass composite leaf spring due to high strength to weight ratio. Therefore the aim of this work is to reduce the weight and low cost fabrication of complete mono composite leaf spring and mono composite leaf spring with bonded end joints. Also, general study on the analysis and design. A single leaf with variable thickness and width for constant cross sectional area of unidirectional glass fibre reinforced plastic (GFRP) with similar mechanical and geometrical properties to the multi leaf spring, was designed, fabricated (hand- layup technique) and tested. The results showed that an spring width decreases hyperbolically and thickness increases linearly from the spring eyes towards the axle seat. The finite element results using ANSYS software showing stresses and deflections were verified with analytical and experimental results. The design constraints were stresses (Tsai-Wu failure criterion) and displacement. Compared to the steel spring, the composite spring has stresses that are much lower, the natural frequency is higher and the spring weight is nearly 85 % lower with bonded end joint and with complete eye unit.
PARALLEL DISK CONTINUOUSLY VARIABLE TRANSMISSION (PDCVT):PROTOTYPE DEVELOPMENT AND PERFORMANCE TESTING
Authors: MARULKAR PRASAD VINAYAK , JOSHI S.G.
Published: January 2021

In this paper, a typical Parallel Disk Continuously Variable Transmission System (PDCVT) is developed in the spirit and approach of Kazerounian and Furu-Szekely. In situations where a speed ratio is required to be changed frequently, continuously variable transmission is one of the desirable solutions. The PDCVT system is one such solution which offers the advantages such as high power to weight ratio and reliability in operation. First of all, the development and manufacturing details of the developed PDCVT system are discussed and experimental and theoretical values of transmission ratios have been determined with different ball diameters and materials. Also, the theoretical and experimental evaluation of transmission torque has been carried out. Experiments have been carried out to determine the system parameters: the stiffness of the spring for preloading mechanism of the system and the area of contact between the balls and rotating disks to determine the coefficient of friction.
Activity of Stem-Injected and Soil Applied Imidacloprid Against Hemlock Woolly Adelgid in the Great Smoky Mountains
Authors: Doccola Joseph
Published: January 2021

Eastern hemlock (Tsuga canadensis [L.] Carrière) is an important component of the riparian ecosystem. Due to the widespread establishment of hemlock woolly adelgid (Adelges tsugae Annand)(HWA) across the range of eastern hemlock, woodland trees may be infested for extended periods (years), resulting in their decline. Imidacloprid, a systemic neonicotinoid insecticide, may be used as a strategy in forested settings to manage HWA while more long-term solutions become established, such as biological controls. Symptoms of prolonged infestation include extensive dieback and thinned canopies. In this study, trees with a diameter at breast height (DBH) of 24.7 ± 2.7 SD cm in poor condition were treated with imidacloprid. Trees were treated once by trunk-injection (IMA-jet) or by soil drench in the Greenbrier area of the Great Smoky Mountains National Park, Gatlinburg, TN, USA. Changes in tree growth and HWA density were measured for 3 consecutive years. Imidacloprid-treated trees recovered, whereas the untreated trees declined. Imidacloprid treatments resulted in significantly higher 3-year mean percent growth (65.6% to 71.7% of tips) compared to the untreated controls (10.5% of tips). HWA density 3-year means in the imidacloprid-treated trees (0.10 to 1.09 per cm) likewise were statistically different to the untreated trees (2.72 per cm). The extended activity of imidacloprid-treated hemlock was attributed to storage in the symplast (xylem ray parenchyma) and to perennial needle retention. This study demonstrates that trunk-injection with IMA-jet is effective against HWA and comparable with soil drench to protect trees in the long term (≥ 4 years).
REPERCUSSÃO E DIÁLOGO: PAULO FREIRE NA AOTEAROA/NOVA ZELÂNDIA
Authors: Nieto Ángel María Carolina , Maciel Vahl Mônica , Farrell Bernadette , Macfarlane Sonja , Macfarlane Angus Hikairo
Published: January 2021

Este artigo trata sobre a presença e a significância das ideias de Paulo Freire na Aotearoa/Nova Zelândia. Partimos do contexto da viagem de Freire ao país em 1974 e relacionamos sua visita com o processo histórico mais amplo de reconhecimento do racismo como um dos legados da colonização do país. Em seguida, mapeamos a presença dos livros de Freire em universidades e bibliotecas públicas, discutindo o impacto da Pedagogia do Oprimido assim como a repercussão das ideias de Paulo Freire na experiência de alguns de seus leitores locais. Por fim, focamos no relacionamento entre o trabalho de Paulo Freire e a educação Māori, discutindo o conceito indígena de Ako e a importância do desenvolvimento de pedagogias culturalmente relevantes.
PAULO FREIRE’S SPIRIT HAS GUIDED MY WORK: CONFESSIONS OF THE FINNISH WORKING-CLASS ACADEMIC
Authors: Suoranta Juha
Published: January 2021

O brasileiro Paulo Freire é sem dúvida um dos pensadores educacionais mais conceituados do século XX. No entanto, na Finlândia, meu país natal, a influência de Freire na pesquisa e nas políticas educacionais tem sido relativamente marginal. No entanto, desde uma perspectiva micro-histórica, o espírito de Paulo Freire tem guiado o meu trabalho acadêmico e de outros, nas margens das ciências sociais e educacionais na Finlândia. Neste artigo, reflito sobre a influência de Freire em minha carreira científica e avalio seu impacto geral nas ciências sociais e educacionais finlandesas.
A RELEVÂNCIA DE FREIRE PARA ENTENDER O COLONIALISMO
Authors: Mayo Peter
Published: January 2021

O presente artigo é um tributo a Paulo Freire (1921-1997). Mais do que oferecer uma compressão sobre suas ideias que se estendem por quase trinta anos de trabalho, este artigo foca em um aspecto do corpo do seu trabalho. Esse aspecto se insere de perto com o escopo desta publicação: o colonialismo. A ênfase está na “consciência opressora” e na invasão cultural enquanto discussões importantes para o colonialismo, em termos de colonialismo direto e neocolonialismo. Este artigo também desenvolve o complexo tema da linguagem em contextos pós-coloniais.
The Dark Triad, goal achievement and work engagement as predictors of counterproductive work behaviors among IT employees
Authors: Filipkowski Jakub , Derbis Romuald
Published: January 2021

Background

The main purpose of this article is to analyze mechanisms associated with counterproductive work behaviors. This entails ac-tions directed against the employer’s interest such as theft, slowing the work down, and avoiding professional responsibilities. This paper analyzes Dark Triad traits of psychopathy, Machiavellianism and narcissism, achievement motivation and work en-gagement as counterproductive work behavior predictors.

Participants and procedure

The study included 115 people, 92 men and 23 women, who were employees of technology departments. The average age of respondents is 27.41 (Me = 26). Participants were surveyed using the online questionnaire method.

Results

Statistical analysis validates all three hypotheses. Achievement motivation, the Dark Triad and work engagement are predictors of counterproductive work behavior; the Dark Triad is a moderator of the relationship with achievement motivation and counter-productive work behaviors; work engagement is a moderator of the Dark Triad’s relationship with counterproductive work behaviors.

Conclusions

All predictors were proven to significantly explain the level of counterproductive behavior. It was also found that work engage-ment and achievement motivation can weaken the influence of the Dark Triad on counterproductive behaviors at work. It is sug-gested to perform more studies to confirm these results and investigate differences between professions.
Social desirability dimensionality: one or two continua?
Authors: Fronczyk Krzysztof , Witkowska Ewa
Published: January 2021

Background

The objective of this paper is to examine the structure of social desirability. This variable is important in self-report question-naires. Theoretical analyses indicate the existence of at least two dimensions of this construct, but there is no unambiguous em-pirical evidence for such a structure of social desirability. The present research aimed to determine the factor structure of the social desirability construct and the number of its dimensions.

Participants and procedure

The inductive research strategy was applied and a new pool of questionnaire items was generated. This approach allows for detachment from the existing social desirability assessment instruments. This study focuses on the concepts of social desirability that examinees have, rather than on the content of existing items measuring social desirability. The verification of the social de-sirability structure was performed in three stages. At each stage, the number of items was gradually reduced. The successive phases of the study involved three different samples, respectively, consisting of 657, 415, and 1,709 examinees.

Results

Initially, at the first stage of the study, two dimensions were detected, but in the two subsequent stages, the second dimension represented acquiescence. The procedure of partialling the mean out of the correlation matrix was applied to eliminate acquies-cence. This dimension is related, as expected, to agreeableness and conscientiousness. It also appeared that the social desirability structure can be confounded by acquiescence in longer questionnaires.

Conclusions

It is concluded that every item reflects both social desirability and acquiescence, albeit to different extents. A one-dimensional construct of social desirability was finally obtained.
Wearing knee sleeves during back squats does not improve mass lifted or affect knee biomechanics
Authors: Bennett Hunter J , Trypuc Alexandria , Valenzuela Kevin A , Sievert Zachary A
Published: January 2021

Purpose

Knee sleeves have become widely popular in the exercise realm, especially for knee support during back squats. Knee sleeves are successful in providing frontal plane knee support during functional tasks, but have not been investigated in back squats. Knee wraps, a somewhat similar elastic material, provide elastic energy that increases weight lifted during back squats. Thus, it is possible the thick neoprene knee sleeves could prove advantageous for back squats. The purpose of this study was to examine the effects of knee sleeves on weight lifted, knee biomechanics, and muscle activations during back squats.

Methods

Fifteen resistance trained men and women performed 1-repetition maximum (1-RM) squats to full depth and 80% 1-RM to full and parallel depths during two separate randomized sessions: with/without knee sleeves. Three-dimensional motion capture, force platforms, and electromyography recorded knee biomechanics and activations of the rectus femoris, vastus medialis, biceps femoris long head, and gluteus maximus during all squats.

Results

Maximal weight lifted did not improve when using knee sleeves. Frontal plane knee biomechanics did not differ for 1-RM or submaximal squats to either depth between conditions. Knee external rotation moments during descent were larger with sleeves during submaximal squats. Reduced integrated ascent phase gluteus maximus activations occurred during both 1-RM and submaximal squats with knee sleeves.

Conclusions

The results of this study show that wearing knee sleeves does not provide additive effects to weight lifted and do not appear to alter frontal plane mechanics during weighted back squats.
Notational analysis of beach handball
Authors: Iannaccone Alice , Fusco Andrea , Conte Daniele , Cortis Cristina
Published: January 2021

Purpose

One factor affecting successful performance in beach handball is the efficiency of shootings. As only few studies evaluated gender-related differences in shooting performance, the aim of this study was to analyse variations of shooting efficiency between males (M) and females (F) during beach handball matches.

Methods

Nine matches were analysed. Overall, there were 559 (M: 353; F: 206) shots, of which 54.7 ± 9.4% were successful and 19.9 ± 7.1% were goalkeepers’ saves. Type of shot, shooting area, and goal area were recorded. Percentages of differences between genders were also computed. Players’ efficiency was calculated as (frequency of goals*100)/frequency of shots. Goalkeepers’ efficiency was calculated as (frequency of goalkeepers’ saves*100)/frequency of shots. Gender differences were ascertained by Pearson’s chi-squared test for independence with Bonferroni corrections. Statistical significance of the results was accepted at p < 0.05.

Results

No statistically significant gender differences were found for any parameter. Goalkeepers were most efficient (M: 23.0 ± 6.1%; F: 25.9 ± 18.0%) when receiving inflight shots. The most frequent shooting area was the front (M: 328 shots; F: 194 shots) and most shots reached lower corners of the goal (M: 139 shots; F: 77 shots).

Conclusions

No differences between genders were found during semifinal and final phases of the tournament. Notational analysis proved to be a valuable tool for better coaching through the interpretation of shots in beach handball and it may be useful to examine all the aspects related to shooting, such as the shooting area and the goal area.
Evaluation of autoantibodies against vimentin and α-enolase in rheumatoid arthritis patients
Authors: Ebrahimi-Rad Mina , Khatami Shohreh , Akhbari Hadi , Mahmoudzadeh-Niknam Hamid , Valadbeigi Shirin , Mahmoudi Mahdi , Jamshidi Alireza , Riazi-Rad Farhad , Saghiri Reza
Published: January 2021

Introduction

Rheumatoid arthritis (RA) is categorized as an autoimmune disease with a frequency of 0.2–1% worldwide. It is reported that various autoantibodies are produced in the RA population, particularly against citrullinated peptides. Among various candidate markers for RA diagnosis, the citrullinated proteins have the highest specificity and sensitivity for both diagnosis and prognosis of RA. Anti-mutated citrullinated vimentin and -enolase constitute a new class of autoantibodies for early detection of RA.

Material and methods

45 serum samples and 19 synovial fluid (SF) specimens collected from RA patients were considered for American College of Rheumatology criteria and 20 serum samples and 10 SF specimens were provided from healthy subjects as a control group. To assess the quantity of anti-citrullinated protein antibodies (ACPA), anti-mutated citrullinated vimentin (MCV) and anti--enolase in the serum and SF of RA patients were determined by the enzyme-linked immunosorbent assay (ELISA) method. For the evaluation of disease activity and joint destruction, we used the Disease Activity Score of 28 joints based on erythrocyte sedimentation rate (ESR) Disease Activity Score 28 (DAS28). Furthermore, to measure the molecular weight of vimentin and -enolase, electrophoresis on 10% SDS-PAGE was performed as described before.

Results

The anti--enolase level among serum samples from RA patients was significantly higher than in healthy subjects (4.49 ±0.20 ng/ml vs. 0.76 ±0.12 ng/ml) (p < 0.001). There was a direct relation between -enolase quantity and (rheumatoid factor) RF and C-reactive protein (CRP) levels. The mean ESR value in positive and negative ACPA patients was 38.2 ±22.6 mm/h and 9.2 ±5.8 mm/h respectively (p < 0.0001). The mean DAS28-ESR was 3.3. The level of anti-MCV in the serum of RA patients (244.6 ±53.3 U/ml) was higher than in serum of the healthy group (148.73 ±71.8) (p < 0.0001). The level of anti-MCV in the SF of patients was 687.5 ±148.4 U/ml.

Conclusions

In conclusion, both autoantibodies against MCV and -enolase are two important markers that increase in serum and SF of RA patients and are specific for diagnosis of RA disease.
Retrospective analyzes of adverse events during biologic agents in children with juvenile idiopathic arthritis from a single center in Turkey
Authors: Balcı Sibel , Demir İlksen , Serbes Mahir , Doğruel Dilek , Ufuk Altıntaş Derya , Kışla Ekinci Rabia Miray
Published: January 2021

Introduction

Juvenile idiopathic arthritis is the most common rheumatic disease in childhood. Biologic agents have changed the course of juvenile idiopathic arthritis. However, there are concerns regarding the occurrence of serious adverse events in patients receiving biologic agents. The aim of this study was to evaluate adverse events in children with juvenile idiopathic arthritis receiving biologic agents.

Material and methods

This retrospective study includes juvenile idiopathic arthritis patients receiving biologic agents. Demographic features and adverse events during biologic agents were collected from medical files. Adverse events that either resulted in death, were life-threatening, required inpatient hospitalization, or resulted in persistent or significant disability/incapacity were considered as serious adverse events.

Results

In total, 162 juvenile idiopathic arthritis patients (55.6% female) receiving biologic agents were enrolled: 101 (62.3%) patients treated with etanercept, 27 (16.7) with tocilizumab, 14 (8.6%) with adalimumab, 15 (9.2%) with anti-interleukin 1 agents (13 canakinumab, 2 anakinra), and 5 (3.1%) with infli­ximab. 75.9% of the patients received concomitantly disease-modifying anti-rheumatic drugs, and 20.4% received disease-modifying anti-rheumatic drugs plus corticosteroid. The mean age at initiation of the biologic agent was 10.5 ±4.3 years. The mean age at the study enrolment was 12.1 ±4.5 years. The mean follow-up duration was 19.7 ±2.1 months. The most frequent adverse event was upper respiratory tract infections (54.3%) followed by urinary tract infections (21%). Anaphylaxis occurred in 3 patients (1.9%): 2 with tocilizumab and one with infliximab. Macrophage activation syndrome occurred in 1 patient (0.6%) receiving tocilizumab. Lung tuberculosis developed in 2 patients (1.2%) receiving canakinumab. The frequency of serious adverse events in total was 6.7%.

Conclusions

While the most frequent adverse events during biologic agents was upper respiratory tract infections, the frequency of serious adverse events was 6.7%; therefore, juvenile idiopathic arthritis patients receiving biologic agents should be carefully evaluated for these adverse events in clinical practice.
Magnetic resonance imaging of the knee joint in juvenile idiopathic arthritis
Authors: Michalski Emil , Ostrowska Monika , Gietka Piotr , Sudoł-Szopińska Iwona
Published: January 2021

Juvenile idiopathic arthritis (JIA) is an umbrella term for a group of diseases in children younger than 16 years old lasting six weeks or longer. Synovitis may lead to destructive and irreversible joint changes with subsequent functional impairment. Prompt diagnosis is essential to prevent permanent joint damage and preserve joint functionality. In the course of JIA both the axial and peripheral skeleton may be involved in the inflammatory process, but the knee joint is most frequently affected. New drugs and treatment protocols have forced the need for diagnosis at the earliest possible stage. Magnetic resonance imaging (MRI) allows early detection of lesions and constitutes a superior diagnostic imaging method. Synovitis, tenosynovitis, enthesitis, bursitis, osteitis, cartilage loss, bone cysts, and erosions are lesions diagnosed in JIA, and they can be precisely imaged in MRI.

This article aims to present MRI inflammatory features of the knee in children with JIA based on the literature.
Frequency	of	Patients	Passing	an	Impacted	Esophageal Meat Bolus by Conservative Method Alone
Authors: Murtaza Ghulam , Hassan Syed sarwat , Nasir Mohammad Qamar , Arsalan Damish , Amin Muhammad Awais , Ayub Awan Amir
Published: January 2021

Objectives: To determine the frequency of patients passing the impacted esophageal meat bolus by conservative management Methods: After obtaining permission from ethical committee of Hospital,a total of 62 patients meeting the study criteria were recruited in the study which was conducted in Department of Otorhinolaryn-gology, Services Hospital, Lahore. Demographic information (name, age, gender, contact) was also obtained. Patients with clinical suspicion of impacted esophageal food bolus of age 20-50 years of either gender were included. Patients with known esophageal abnormalities like stricture, web or growth on either barium swallow or esophagogastroduodenoscopy, peptic ulcer and GERD were excluded. After taking informed written consent from each patient, single intravenous dose of buscopan 20mg was given to each patient. Each patient was followed by the researcher himself for 24 hours to assess the passage of food bolus. Results: 20-50 years was the age range in our study, with mean age being 34.10± .63 years. Majority of the patients 32 (51.61%) were between 20 to 35 years of age. Out of 62 subjects, 37 (59.68%) were male, 25 (40.32%) were females with male to female ratio 1.5:1. In our study, Frequency of patients passing the impacted esophageal meat bolus by conservative management was found in 51 (82.26%) patients. Conclusion: This study concluded that there is a high frequency of patients passing the impacted esophageal meat bolus by conservative management. Keywords: Esophagus, foreign body, conservative management.
Morphological Spectrum of Lesions Seen in Thyroidectomy Specimens At A Tertiary Care Institute
Authors: Nadeem Iram , Sameen Samra , Iqbal Sahar , Anis Tazeen
Published: January 2021

Objective: To determine the morphological spectrum of thyroid lesions encountered in thyroidectomy specimens at a tertiary care institute. Methods: It was a retrospective study conducted in Pathology Department, Allama Iqbal Medical College, Lahore. A retrospective manual collection of data was done from record registers, for the years 2012 & 2013. Results: A total of 307 cases were retrieved with age range of 16-70 years. Amongst them, 47 were males and 260 were females. Non neoplastic conditions outnumbered the neoplastic lesions as 229(75%) cases were of colloid goiter. Hashimoto thyroiditis was present in 12(3.9%) specimens and associated hyperplastic changes were seen in 15(4.9%) cases. There were 19(6.2%) cases of papillary carcinoma, 3(0.9%) cases of follicular carcinoma, 3(0.9%) cases of medullary carcinoma, 1(0.3 %) case of insular carcinoma and 2(0.6%) anaplastic carcinoma. Papillary microcarcinoma was seen in 4(1.3 %) cases and medullary microcarcinoma in 1(0.3%) case. Follicular adenoma comprised 29(9.4%) cases and Hurthle cell adenoma 3(0.9%) cases. Study data also showed 1(0.3%) rare case of hyalinizing trabecular tumor. Conclusion: Non neoplastic thyroid diseases are more common as compared to neoplastic lesions. Papillary carcinoma is most common thyroid malignancy encountered in our setting. Key Words: Thyroidectomy, Colloid goiter, papillary carcinoma
El género Cycloneda Crotch (Coleóptera: Coccinellidae) en el departamento del Cusco, Perú
Authors: Bustamante-Navarrete Abdhiel
Published: January 2021

El examen de especímenes de la familia Coccinellidae, depositados en la Colección Entomológica de la Universidad Nacional San Antonio Abad del Cusco, Perú, permitió determinar la presencia de siete especies del género Cycloneda Crotch, 1871: Cycloneda marcapatae Bustamante, Oroz & Cosio 2009, Cycloneda vandenbergae González, Bustamante & Oróz 2008, Cycloneda andresi Oróz, Bustamante & Cosio 2009, Cycloneda dieguezi González 2018, Cycloneda arcula (Erichson 1847), Cycloneda ecuadorica (Timberlake 1943) y Cycloneda sanguinea (Linnaeus 1763). Los taxones encontrados se hallan presentes en 35 localidades, de 24 distritos, en 10 provincias del departamento del Cusco, ocupando un rango altitudinal que abarca desde los 800 msnm (Sahuayaco, Echarate, La Convención), hasta los 5,230 msnm (Pucacocha, Ausangate, Quispicanchi). Para cada especie se presenta una diagnosis, distribución, comentarios sobre su biología, fotografías de su habitus, y microfotografías del aparato genital.
Consumo de leña y estimaciones del valor calorífico de especies de plantas utilizadas por las comunidades campesinas de la cordillera del Vilcanota, Cusco
Authors: Gil-Mora Juan E. , Baca-Flores Jesús A. , Álvarez-Moscoso Modesta E.
Published: January 2021

A pesar de que la vegetación arbórea y arbustiva leñosa se halla intervenida y deteriorada en la zona altoandina, existen especies como fuentes de energía. El estudio se desarrolló en 12 comunidades campesinas localizadas en las microcuencas de los ríos Patacancha (Ollantaytambo-Urubamba) y Lares (Lares-Calca); han sido identificadas 56 especies nativas empleadas como leña; estas especies son utilizadas por las comunidades campesinas ubicadas por encima de 3,200 msnm en la cordillera del Vilcanota. El requerimiento comunal de leña y energía es de 1.754 kg. de combustible por persona al día; esto implica un consumo en valores de energía de 12,170.88 kJ/kg,lo que significa un consumo de 0.0227 GJ persona/día. El 62.71% del combustible utilizado por las comunidades altoandinas proviene de bosques nativos, el 13.97%, de la bosta de ganado y el 23.3% del eucalipto. Si esta demanda es comparada con la oferta de leña existente en los bosques nativos, se concluye que existe un déficit de oferta de energía por parte de la biomasa vegetal existente en los bosques montanos altoandinos. Se han identificado especies de interés parala recuperación de los bosques altoandinos, como las que pertenecen a los géneros: Polylepis, Escallonia,Hesperomeles, Duranta, Citharexylum, Vallea, Berberis, Myrcianthes que poseen un alto poder calorífico que fluctúa entre 11,500 y 12,500 KJ/kg.
Compilación de información periodística en una biblioteca moderna
Authors: Saavedra Luis María
Published: January 2021

Artículo de Luis María Saavedra, Bibliotecario de Unión Industrial Argentina, en el cual describe uno de los servicios que hacen de la biblioteca el lugar obligado de concurrencia para el estudioso, el profesional y todo aquel que busca un dato preciso o una referencia exacta. Se refiere a la información suministrada por medio de los diarios y periódicos.
Don Ramón Castilla de 1821 a 1830
Authors: Rivera Serna Raúl
Published: January 2021

El estudio de un período de la vida de Castilla, tiene, a través de este artículo, una finalidad evocativa cuando se trata de reconstruir una etapa consagrada a la estructuración de la patria y a la creación de la conciencia nacional y una finalidad histórica cuando se intenta sistematizar y organizar lo conocido a fin de lograr una visión de conjunto, completa en lo posible.
Observations and simulations of a wind farm modifying a thunderstorm outflow boundary
Authors: Tomaszewski Jessica M. , Lundquist Julie K.
Published: January 2021

Abstract. On 18 June 2019, National Weather Service (NWS) radar reflectivity data indicated the presence of thunderstorm-generated outflow propagating east-southeastward near Lubbock, Texas. A section of the outflow boundary encountered a wind farm and then experienced a notable reduction in ground-relative velocity, suggesting that interactions with the wind farm impacted the outflow boundary progression. We use the Weather Research and Forecasting model and its wind farm parameterization to address the extent to which wind farms can modify the near-surface environment of thunderstorm outflow boundaries. We conduct two simulations of the June 2019 outflow event: one containing the wind farm and one without. We specifically investigate the outflow speed of the section of the boundary that encounters the wind farm and the associated impacts on near-surface wind speed, moisture, temperature, and changes to precipitation features as the storm and associated outflow pass over the wind farm domain. The NWS radar and nearby West Texas Mesonet surface stations provide observations for validation of the simulations. The presence of the wind farm in the simulation clearly slows the progress of the outflow boundary by over 20 km h−1, similar to what was observed. Simulated perturbations of surface wind speed, temperature, and moisture associated with outflow passage were delayed by up to 6 min when the wind farm was present in the simulation compared to the simulation without the wind farm. However, impacts on precipitation were localized and transient, with no change to total accumulation across the domain.
The need for addressing multilingualism, ambiguity and interoperability for visual resources management across metadata platforms
Authors: Russo Denise , Rorissa Abebe
Published: January 2021

The digitization of visual resources and the creation of corresponding metadata that meets the criteria of clarity and interoperability, while also approaching the needs of the multilingual Web, are pressing concerns. Because visual resources make up a significant percentage of digital information, this paper focuses on the aforementioned concerns and proposes ways to address them, including swift progression and adoption of cohesive, multi-user, multilingual metadata standardization to improve digital access and to allow all descriptive image metadata to be approachable and translatable. We offer some recommendations such as those involved in visual resource management moving away from using primarily the English writing system based metadata schemas in order to provide flexible lexicon in non-Roman languages, which can easily be recognized and interpreted by both monolingual and multilingual users alike as well as facilitate digital metadata interoperability.
Discursive strategies for disinformation on WhatsApp and Twitter during the 2018 Brazilian presidential election
Authors: Recuero Raquel , Soares Felipe , Vinhas Otávio
Published: January 2021

This paper aims to analyze and compare the discursive strategies used to spread and legitimate disinformation on Twitter and WhatsApp during the 2018 Brazilian presidential election. Our case study is the disinformation campaign used to discredit the electronic ballot that was used for the election. In this paper, we use a mixed methods approach that combined critical discourse analysis and a quantitative aggregate approach to discuss a dataset of 53 original tweets and 54 original WhatsApp messages. We focused on identifying the most used strategies in each platform. Our results show that: (1) messages on both platforms used structural strategies to portray urgency and create a negative emotional framing; (2) tweets often framed disinformation as a “rational” explanation; and, (3) while WhatsApp messages frequently relied on authorities and shared conspiracy theories, spreading less truthful stories than tweets.
What do creators and viewers owe each other? Microcelebrity, reciprocity, and transactional tingles in the ASMR YouTube community
Authors: Maddox Jessica
Published: January 2021

ASMR has skyrocketed to international popularity in recent years, and a thriving community and cultural exists around the phenomenon on YouTube. However, misunderstandings about the practice persist, and little is known about this community in terms of its texts and practices. This research draws on a multiyear digital ethnography into the ASMR culture and community on YouTube, where I analyze how microcelebrity, the attention economy, platform-specific dynamics, and content creation merge. Drawing on extant research that identifies reciprocity as a key cultural dynamic on YouTube, I argue reciprocity in the ASMR YouTube community, as well as the relationship between creator and viewer, can best be understood as transactional tingles: relaxation in exchange for likes, clicks, and views within the attention economy. Transactional tingles is also a contemporary blending of more traditional art patronage and dealer-critic systems, which offers insights into the role viewers and platforms play in content creation, digital labor, and precarity.
Evaluation of Health-Related Quality of Life and Its Influencing Factors in Pediatric Patients with Voiding Dysfunction
Authors: Özdrama Yıldız Emine  Gözde , Özçelik Gül
Published: January 2021

Objective: Health-related quality of life and its influencing factors in pediatric patients with voiding dysfunction and their parents was assessed. Method: The patients who were admitted with urinary incontinence for at least 6 months to the clinics of pediatrics and pediatric nephrology were enrolled in the study. The patients were divided into three group as daytime urinary incontinence (DUI), enuresis and both DUI and enuresis. The Pediatric Quality of Life InventoryTM (PedsQLTM) was administered to patients and mothers. Results: A total of 100 patients with voiding dysfunction aged from 5 years to 18 years (mean age: 8.8±2.6) were included in the study. The mean dysfunctional voiding symptom score was 15.5±6.6 in all groups and significantly higher in the group who experienced both DUI and NE (p<0.001). No significant difference was observed in terms of mean PedsQL scores of the children and their parents between groups with urinary incontinence (65.5±16 and 58.4±13.5, respectively), but strong positive correlation was obtained (p<0.001). The mean PedsQL score for the children aged from 8 years to 12 years was significantly lower than the scores for the children aged from 5 years to 7 years old (p<0.05). The mean PedsQL score for the children aged from 13 years to 18 years was not different from the other age groups. Conclusions: The early diagnosis and treatment of patients aged from 8 years to 12 years who had the lowest PedsQL score is important. Additionally, the success in improvement of the quality of life of children with voiding dysfunction require cooperation with parents.
The Overall Distribution of ABO and Rh (D) Groups in The Most Populous City Istanbul as Representing the Complex Ethnicity of Turkey
Authors: Yanaşık Melek , Tunç Tülin , Huslu Mukadder , Kalayoğlu Beşışık Sevgi
Published: January 2021

Objective: In humans, 38 different critical blood type classification systems are currently recognized. They differ in frequencies in distinct populations. It is aimed to visualize ABO and Rh(D) groups distribution in Istanbul as having the largest community in Turkey. Method: Volunteered blood donor's data on the automation system were screened retrospectively. Blood donation acceptance criteria were based on the guidelines prepared by the Ministry of Health. ABO and Rh(D) groups were analyzed using column agglutination/gel centrifugation methods. Results: The study covered six years' data between the dates of January 2014 and December 2019, including 136,231 donors. The majority of the donors were found to have blood group A with a frequency of 41.88%(n=57,059). The second most common blood group was group O, and had a frequency of 34.92%(n=47,576). The blood group B (n=20,790;15.26%) and group AB (n=10,806;7.93%) were found to be the rare encountered blood groups. Among the Rh(D) group, 85.02% of the donors were Rh(D) positive. Conclusion: In transfusion medicine, ABO and Rh(D) groups' compatibility is mandatory. According to the monthly and or annual blood products requirement, there are some suggested quantities of blood units to be available at blood centres. Determining the frequency of blood group distribution of populations will help to coordinate the ratio of blood groups to be storaged. The Turkish genetic makeup is a fascinating mixture of European and Asian DNA, necessitates to find out the countries' specific ABO and Rh(D) groups ratio. We compared our results with the previously reported studies performed in different cities of Turkey and the world around. Thus, our research as giving the overall distribution of ABO and Rh(D) groups from the largest city of Turkey reflecting the general ethnic background of the country, would help to the establishment of a databank of ABO and Rh(D) group's ratio.
Retrospective Analysis of Peripheral T-Cell Lymphoma Patients: Single Center ‘Real-Life’ Experience
Authors: Özbalak Murat , Mestanzade Metban , Özlük Özden , Tiryaki Tarık Onur , Yonal Hindilerden İpek , Yenerel Mustafa Nuri , Altay Ali Yılmaz , Yeğen Gülçin , Doğan İbrahib Öner , Nalçacı Meliha , Kalayoğlu Beşışık Sevgi
Published: January 2021

Objective: Peripheral T-cell lymhomas (PTCLs) represent a heterogeous group of diseases, with poor long-term outcomes excluding ALK+ anaplastic large cell lymphoma (ALCL). Method: We represent data of our retrospective analysis of 62 consecutive PTCL cases diagnosed since 2002. Median observation time was 16 months. Results: The overall response rate to first line treatment was 53 percent. Data related to median progression- free survival and overall survival times could not be obtained for ALK+ALCL group whereas median progression- free survival and overall survival times for ALK-negative ALCL group were 1 and 18 months, respectively. Disease progression was frequently observed histologically in ALK-negative group. For ALKnegative ALCL, advanced stage disease was defined as the presence of serum albumin <3.4 g/dl, serum total protein ≤6.2 g/dl, high serum LDH, and serum ferritin >200 ng/ml, presence of B symptoms, and extranodal involvement of more than one site. Risk factors associated with death were serum albumin <3.4 g/dl, serum total protein ≤6.2 g/dl, serum ferritin over 200 ng/ml, and bone marrow involvement at the time of diagnosis. During follow-up 39 patients (64%) died. Most common reasons were progressive disease and infections. Four patients developed secondary malignancies. Conclusion: Our study is a reflection of the ‘real-life’. Three patients died due to disease progression shortly after diagnosis without providing treatment due to aggressiveness of the disease. Alternatives to CHOP-based chemotherapies should be found for the ALK + non-anaplastic large cell lymphoma group.
Evaluation of the Depression, Anxiety Levels and Attitudes of Mothers of Children with Celiac Disease
Authors: Doğan Güzide , Yalın Sapmaz Şermin , Appak Yeliz Çağan , Öztürk Masum , Yiğit Yeşim , Kasırga Erhun
Published: January 2021

Objective: In celiac disease, a gluten-free diet is required for lifelong. Difficulties experienced by children with celiac disease can also negatively affect caregivers. The aim of this study is to evaluate the anxiety and depression of mothers having a child with celiac disease, and evaluate mothers’ attitude towards their children. Method: Thirty-six children with celiac disease, their mothers, and 36 healthy controls were included in the study. The Parent Attitude Research Instrument, State–Trait Anxiety Inventory, and the Beck Depression Inventory were completed by all mothers. Results: The mothers of children with celiac disease had significantly higher scores in depression and state-trait anxiety than the mothers of the healthy children. Mothers of children with celiac disease had significantly higher scores in the attitude of overparenting, authoritarian attitude and attitude of hostility and rejection than the mothers of healthy children. Conclusion: This study revealed that having a child with celiac disease might have negative effects on mothers and their attitudes towards their children. Because of psychopathologic risks appropriate psychologic support should be provided for mothers.
Our 2-Year Real-Life Outcomes in Patients Who Received Ranibizumab Treatment for Diabetic Macular Edema (DME)
Authors: Onur İsmail Umut , Asula Mehmet Fatih , Yiğit Ulviye , Sonbahar Ozan , Furuncuoğlu Utku
Published: January 2021

Objective: To assess the real-life performance and clinical outcomes in patients with diabetic macular edema (DME). Method: The chart records were retrospectively evaluated for 42 eyes of 42 patients with DME, who were followed for two years between October 2013 and October 2016 at the Retina Unit. The patients were treated using intravitreal ranibizumab (0.5 mg/0.05 ml) for two years. Results: The Early Treatment of Diabetic Retinopathy Study (ETDRS) letter score indicated BCVA values of 71.1±22.4 letters at baseline, 74.1±19.1 letters at the sixth month, 76.2±16.2 letters at the first year, and 76.1±21.2 letters at the end of the second year. BCVA at the sixth month and first and second years were not significantly different from the baseline value (p=0.172, p=0.051, p=0.108). The mean CFT were 407.4±140.0 μm at the baseline, 375.5±141.5 μm at the 6th month, 357.0±129.1 μm at the 1st year, and 313.8±108.9 μm at the end of 2nd year. The change in mean CFT compared to the baseline value was not statistically significant at the 6th month, but were statistically significant at the 1st and the 2nd years (p=0.082, p=0.040, and p=0.000, respectively).The mean numbers of injections and follow-ups at the end of the second year were 3.7±2.5 and 9.1±3.1, respectively. Conclusion: The BCVA did not change significantly compared to baseline. The BCVA eye scores improved by 15 or more letters, in agreement with findings of other multi-center studies. However, the eyes with a BCVA loss of 15 or more letters showed a significant difference, which might reflect the smaller number of injections given in the present study compared to the other studies.
The Relation of Uric Acid And MPV Levels And Cognitive Functions In Fibromyalgia
Authors: Vural Meltem , Yıldız Aydın Filiz , Çakmak Bahar , Üstün Işıl , Kasım Ali Bsyram , Gedikbaşı Asuman , Baş Cemal
Published: January 2021

Objective: Patients with fibromyalgia syndrome (FMS) have mild cognitive dysfunction. Higher serum uric acid (UA) levels in some diseases are reported to be associated with cognitive impairment. Mean platelet volume (MPV) is an indicator of platelet activation. Activated platelets may play a role in neuroinflammation and cognitive dysfunction. The purpose of this study was to compare cognitive functions of FMS patients and controls and investigate the relation of serum UA and MPV levels with cognitive functions. Method: Fifty-four patients with FMS and 33 healthy controls were enrolled,retrospectively. Evaluations were performed with Visual Analog Scale (VAS), Fibromyalgia Impact Questionnaire (FIQ), Beck Depression Inventory(BDI) and to asses phychological status and cognitive impairment Mini Mental State Examination(MMSE) was used in both groups. Results: Mean VAS and sleep quality of FMS group were significantly higher than the control group (p<0.05). Mean MMSE score was statistically significantly lower in the FMS group (p=0.0001). There was not statistically significant correlation between serum UA levels and VAS pain/sleep quality, FIQ, BDI and MMSE scores (p>0.05). No significant correlation was found between serum MPV levels and VAS pain/ sleep quality, FIQ, BDI and MMSE scores (p>0.05) but declined cognitive functions were determined in the FMS group when compared with the control group. Conclusion: Declined cognitive functions were determined in the FMS the FMS group when compared with the control group. Although we did not determine an association of serum uric acid and MPV levels with cognitive functions, larger prospective studies with longer follow up periods are warranted to elucidate the role of these biomarkers in FMS and to determine the factors affecting cognitive functions.
Medical Waste Management And Zero Waste Approach In Healthcare Organizations
Authors: Baykara Mat Seda Tuğba , Baykal Ülkü
Published: January 2021

Today, changes such as technology development, rapid population growth, and easy access to information increase the level of social welfare and increase the appeals to health services. Along with this, the orientation towards therapeutic services instead of preventive health systems and the increase in health demand enhance medical waste generation, which creates various risks in terms of human and environmental health. In this article, it is aimed to examine Zero Waste Project, which is a new approach in the management of medical wastes and disposal of these wastes in accordance with environmental health, and to evaluate within the scope of current legislation.
Hemşirelerin Örgütsel Sessizlik Davranışları ve Etkileyen Faktörlerin Belirlenmesi
Authors: Yalçın Begüm , Göktepe Nilgün , Türkmen Emine , Özcan Şeyda
Published: January 2021

Aim: This study used descriptive, exploratory design and conducted to determine nurses organizational silence behavior levels and affecting factors. Method: This study was conducted with 105 nurses working in a private university hospital. In the study, the Organizational Silence Behavior Scale and twelve socio-demographic and job-related questions were used to collect the data. The data were analyzed using the SPPS 26 program. In descriptive statistical analysis, number, percentage, mean, and standard deviation were used. Independent variables that have an effect on silence behavior subscale scores in primary analyzes were analyzed by using multiple regression analysis. Results: The average age of the nurses participating in the study was 27.9 ± 4.6. It was determined that 83.8% were women, 70.5% had bachelor’s degree and 60% worked as nurses. The organizational Silence Behavior Scale total score arithmetic mean is 2.59 (SD = .66) (min =1, max = 4.26), and the highest score in the subscale was found to be in the acquiesce silence subscale with 3.03 (SD = 1.00). While more than half of the nurses (55.2%) stated that their managers had an influence on their silence behavior, according to the result of regression analysis, being unable to speak comfortably with the manager in the silence climate (R2 : .10, Durbin Watson: 1.82, p = .001) and not being able to speak comfortably with the manager in the acquiesce silence subscale. It was found that being under 30 years old (R2 : .23, Durbin Watson: 1.49, p < .001) was effective. Conclusion: The results obtained from the research indicated that the nurses who can speak easily with his/her manager nurse and who are older, exhibit less silence behavior. Manager Nurses who are supporting open communication and feedback processes will prevent ‘ silence behavior and support positive work environment