bluuebunny/crossref_metadata_2025 huggingface dataset:
Seguridad democrática vs. Acuerdo humanitario, ejes para la visibilizaciòn de la sociedad civil en Colombia
Authors: Ruelle Gómez Adriana
Published: August 2019

Este artículo explica la relación entre la sociedad civil y el Estado en Colombia teniendo como elemento articulador el tema de los derechos humanos en el contexto de lo que aquí se enuncia como la analogía del reflejo, herramienta de análisis empleada para describir la configuración del Estado y la sociedad civil actualmente en el país. La reflexión se centra en el examen de algunos aspectos de teoría política que configuran la disyuntiva entre la Política de Defensa y Seguridad Democrática desarrollada en los gobiernos del Presidente Álvaro Uribe Vélez y la posibilidad del Acuerdo Humanitario, confrontación que, finalmente, ha conducido a la visibilización de la sociedad civil en acciones colectivas como fueron las marchas que en el 2008 se dieron.
Effect of suction chamber baffles on pressure fluctuations in a low specific speed centrifugal pump
Authors: Luo Kaikai , Wang Yong , Liu Houlin , Chen Jie , Li Yu , Yan Jun
Published: August 2019

In order to study the effect of suction chamber baffles on hydraulic performance and unsteady characteristics in a low specific speed centrifugal pump, a model pump was design with enlarging flow mothed and four schemes of suction baffle, including no baffle (scheme 0), only one baffle in the suction (scheme 1), two baffles (scheme 2) and three baffles in the suction (scheme 3), were considered. Commercial code FLUENT was applied to simulate the flow of the pump. RNG k-ε turbulence model was adopted to handle with the turbulent flows in the pump. The sliding mesh technique was applied to take into account the impeller-volute interaction. Based on the simulation results, the hydraulic performance and pressure fluctuations were obtained and analyzed in detail. The head value of no baffle in the suction (scheme 0) is lower than that with baffles in the suction (scheme 1, scheme 2, scheme 3) at each condition point. Hump point in scheme 0 is at φ= 0.00596 (1.2 times Qo). The hump point in scheme 1, scheme 2, scheme 3 is at 0.8Qo, 1.0Qo, 1.0Qo, respectively. The ε value of scheme 1 is the smallest and that of scheme 0 is the largest in the four schemes. Six wave troughs are observed clearly at each monitoring point as the impeller rotates in a circle. Each time the impeller is turned 10 degrees, there are six obvious troughs around the impeller. With the rotation of the impeller, peak value of pressure fluctuations at blade passing frequency (BPF) is gradually decrease. At low flow (ϕ= 0.002383), the main frequency of pressure fluctuation at P36 and P1 under scheme 0, scheme 2 and scheme 3 is 295 Hz, which is corresponding to BPF. The pressure fluctuation levels are decreased by –2.72 %, –2.13 %, and –2.21 % respectively when the number of baffle in the suction is one, two, three, respectively. And decrease rate of pressure fluctuation (∆Cp) on scheme 1 is maximum. It indicates that Adding baffles to the suction chamber is beneficial to reduce the amplitude of pressure pulsation at BPF in the volute. The best number of baffles in the suction is one. Based on scheme 1 simulation results, the prototype was manufactured and the performance experiments were carried out. A good agreement of the head and efficiency between numerical results and experimental results are observed.
Tacholess order tracking method for gearbox based on time-varying filter and energy centrobaric correction method
Authors: Jing Shuangxi , Luo Zhipeng , Leng Junfa , Wang Zhiyang
Published: August 2019

Under the premise that the instantaneous speed can be accurately measured or precise estimated, order tracking is considered to be a classical and effective technique for non-stationary vibration analysis of rotating machinery. The meshing frequency components of the vibration signal measured from complex gearbox system interfere with each other mutually. The energy centrobaric correction method exhibits exact instantaneous frequency estimation (IFE) ability under the interference, but is susceptible to strong noise. Combining with time-varying filter and energy centrobaric correction method, a tacholess order tracking technique for gear fault diagnosis under the rotating frequency multi-linear fluctuation is proposed. The time-varying filter is designed to filter the strong noise signal, and then IFE could be accurately calculated from the filtered signal by energy centrobaric correction method. The instantaneous phase of reference shaft based on the Vold-Kalman filter (VKF) is used for angular resampling of the original vibration signal. The results show that the shaft rotating speed could be accurately identified from extracted gear meshing components. The order spectrum obtained by the proposed method with tacholess is substantially the same as the order spectrum obtained by a tachometer. Simulation analysis and experimental results verify the advantages of proposed tacholess order tracking technology for monitoring and fault diagnosis of gearbox vibration under the condition of strong noise and large speed variation.
Transmission characteristics of planetary gear wear in multistage gear transmission system
Authors: Wang Xin , Li Liang , Zhao Xiaofei
Published: August 2019

Gear tooth surface wear is a common failure mode. It takes a long time and can cause other major faults. The wear fault signal is weak and hard to identify. This paper reveals the transmission characteristics of the planetary gear wear and the relationship between multistage gear meshing through the transmission characteristic analysis. Taking the multistage gear transmission system fault simulation test rig as the research object, a three-dimensional solid rigid-flexible coupling model of the system was established. The contact force signals from each pair of gears in the state of planetary gear wear were obtained by dynamic simulation. The test signals of the fixed-axis gearbox and planetary gearbox were obtained under normal and planetary gear wear states. Comparing the transmission characteristics of the system under normal and planetary gear wear states, the vibration mechanism of the wear fault and the correlative characteristic between gearboxes were revealed.
Numerical simulation of vehicle movement on rigid roadway pavement with discontinuities
Authors: W. Alisjahbana Sofia , Asmi Ade , Safrilah  , Chandra Pratama Putra Jouvan , S. Gan Buntara , Alisjahbana Irene
Published: August 2019

A numerical simulation of a moving vehicle on the rigid roadway pavement with discontinuities is presented in this paper by using the data from one of the toll road segments in Indonesia. The analysis procedure considers the dynamic interaction between the vehicle and the rigid pavement. The rigid roadway pavement is modeled using the Kirchhoff theory of thin slab on elastic foundations. The aim of the numerical analysis is to obtain the vertical deflection in the middle of the slab, to obtain the time history of the slab deflection; and to identify the parameters of the sub-grade that has a significant effect on the dynamic response of the rigid roadway pavement. The equations of motion are derived in the form of partial differential equations of the fourth order. The mode shapes of the slab deflection are determined from the method of first and the second auxiliary equations of Levy-type in the x- and y-directions, which is also known as the Modified Bolotin Method (MBM). The equations of motion are solved numerically by using Mathematica. The influence of various parameters including the peak vertical velocity due to the moving vehicle, the stiffness of subgrade, the slab thickness and the road profile to the dynamic behavior of the rigid roadway pavement are studied in detail. The results obtained from the plate computing model in this paper are then compared and analyzed with the results computed using the finite element method by Strand 7 to show that the solution obtained using the MBM method is accurate. In addition, the paper aims to show that the thickness of the plate plays a significant role in the distribution of the bending stresses in plate discontinuities and is necessary for engineers to design rigid roadway pavements.
Vibration characteristics of spur gear system with non-linear damping under no lubrication condition
Authors: Liu Shaona , Liu Fuhao
Published: August 2019

Gear rattle induced by backlash between meshing gears results in excessive vibration and noise in many gear systems. A dynamic model of a light-loaded spur gear pair with non-linear damping under no lubrication condition is presented in this paper. Unlike previous models, the effect of backlash on damping is considered, so the damping is not linear. In order to illustrate the effect of non-linear damping on the dynamic response, the dynamic behaviors of gear system with non-linear damping (GSND) and linear damping (GSLD) under different impact status are compared by using the numerical integration method. The results show that the behavior of gear pair with non-linear damping is different from that with linear damping, and the impact vibration of GSND is much greater than GSLD under some conditions. The influences of parameters such as load ratio, load value, meshing stiffness, and damping ratio on the dynamic responses of GSND are also discussed, and some suggestions to reduce impact vibration of gear system are proposed. The results provide a theoretical basis for the design and manufacture of gear system.
Bearing degradation assessment based on entropy with time parameter and fuzzy c-means clustering
Authors: Liu Guozeng , Zhao Jianmin , Li Haiping , Zhang Xin
Published: August 2019

Bearings are one of the most crucial elements in rotating machine. The condition of bearings decides the operation of machine. Consequently, it is necessary to study the assessment of bearing degradation in order to develop condition-based maintenance. This paper improves an indicator based on entropy which is calculated by wavelet packet decomposition and auto-regressive model. By introducing time parameter, the indicator solves the problem of instability in the initial stage of operation and it is less influenced by the operational conditions. Then, fuzzy c-means clustering can evaluate the process of degradation. Moreover, it can provide the threshold adaptively and help to repair by unit replacement. To ensure the applicability, the data of this paper comes from two laboratories, FEMTO-ST Institute and Intelligent Maintenance System Center. The result indicates that the method is effective to assess bearing degradation process.
Evaluación del comportamiento reproductivo postparto, influido por la época del año y la raza en bovinos bajo el sistema doble propósito
Authors: Salgado O Roger , Cury R Any , Ruiz C Ricardo , Alvarez P Jaime
Published: August 2019

El objetivo de este estudio fue evaluar el efecto que ejerce la época del año y la raza en el desempeño reproductivo postparto de vacas manejadas bajo el sistema de doble propósito. Fueron utilizadas 28 vacas multíparas homogéneas en número de partos, producción de leche, raza, manejo, sanidad, medio ambiente, alimentación y sistema de amamantamiento. Fueron distribuidas en cuatro tratamientos utilizando un diseño completamente al azar, con un arreglo factorial 2 x 2, con dos épocas (sequía y lluvia) y dos razas (mestiza (30% Holstein y 70% Cebú) y Cebú) con siete repeticiones por grupo (combinación: época x raza): T1 - Sequía x Mestiza; T2 - Sequía x Cebú; T3 - Lluvia x Mestiza; T4 - Lluvia x Cebú. Para la tasa de gestación y días abiertos, se encontró diferencia estadísticamente significativa (P<0.05) en la tasa de gestación para el factor época a favor de la época seca del año (92.85 vs 57.14%), mientras que en los días abiertos no se encontró diferencias significativas (P>0.05) entre épocas del año, 92.71 ± 23.74 días para la época seca contra 115.78 ± 47.35 días para la época lluviosa del año. En el factor raza, no se encontró diferencias significativas (P>0.05) en la tasa de gestación (Cebú 78.57 vs mestiza 71.42%) y en los días abiertos (Cebú 100.71 ± 31.76 vs mestiza 107.78 ± 45.35 días). Esto es una indicación de la importancia del efecto que ejercen la época del año y la raza en el comportamiento reproductivo postparto en vacas bajo el sistema de doble propósito.
Proceedings of the Mathematics for Industry NZ Study Group 2017
Authors: Fullard Luke , Brown Richard , Roberts Anthony John
Published: August 2019

This Special Section of the ANZIAM Journal (Electronic Supplement) contains the refereed papers from the 2017 Mathematics for Industry NZ Study Group (MINZ 2017) held at Victoria University, Wellington, New Zealand from 26--30 June, 2017. The MINZ is a special interest meeting of ANZIAM, the Australia and New Zealand Industrial and Applied Mathematics division of the Australian Mathematics Society. MINZ was formed to provide a national entity to host workshops where companies pitch their problems to New Zealand’s mathematical scientists. They then work collaboratively to generate practical solutions through modelling, statistical analysis or computation.
Geriatric Trauma – A Rising Tide. Assessing Patient Safety Challenges in a Vulnerable Population Using Norwegian Trauma Registry Data and Focus Group Interviews: Protocol for a Mixed Methods Study (Preprint)
Authors: Cuevas-Østrem Mathias , Røise Olav , Wisborg Torben , Jeppesen Elisabeth
Published: August 2019

BACKGROUND

Elderly trauma patients constitute a vulnerable group, with a substantial risk of morbidity and mortality even after low-energy falls. As the world’s elderly population continues to increase, the number of elderly trauma patients is expected to increase. Limited data are available about the possible patient safety challenges that elderly trauma patients face. The outcomes and characteristics of the Norwegian geriatric trauma population are not described on a national level.

OBJECTIVE

The aim of this project is to investigate whether patient safety challenges exist for geriatric trauma patients in Norway. An important objective of the study is to identify risk areas that will facilitate further work to safeguard and promote quality and safety in the Norwegian trauma system.

METHODS

This is a population-based mixed methods project divided into 4 parts: 3 quantitative retrospective cohort studies and 1 qualitative interview study. The quantitative studies will compare adult (aged 16-64 years) and elderly (aged ≥65 years) trauma patients captured in the Norwegian Trauma Registry (NTR) with a date of injury from January 1, 2015, to December 31, 2018. Descriptive statistics and relevant statistical methods to compare groups will be applied. The qualitative study will comprise focus group interviews with doctors responsible for trauma care, and data will be analyzed using a thematic analysis to identify important themes.

RESULTS

The project received funding in January 2019 and was approved by the Oslo University Hospital data protection officer (No. 19/16593). Registry data have been extracted for 33,344 patients, and the analysis of these data has begun. Focus group interviews will be conducted from spring 2020. Results from this project are expected to be ready for publication from fall 2020.

CONCLUSIONS

By combining data from the NTR with interviews with doctors responsible for treatment and transfer of elderly trauma patients, we will provide increased knowledge about trauma in Norwegian geriatric patients on a national level that will form the basis for further research aiming at developing interventions that hopefully will make the trauma system better equipped to manage the rising tide of geriatric trauma.

INTERNATIONAL REGISTERED REPORT

PRR1-10.2196/15722
Effectiveness of Text Message Interventions for Weight Management in Adolescents: Systematic Review (Preprint)
Authors: Partridge Stephanie Ruth , Raeside Rebecca , Singleton Anna , Hyun Karice , Redfern Julie
Published: August 2019

BACKGROUND

The incidence of obesity among adolescents is increasing. Text messages are a primary communication form for adolescents and potentially a scalable strategy for delivering population health interventions.

OBJECTIVE

This study aimed to determine the effectiveness of text message interventions in reducing BMI in adolescents and describe characteristics that are common to effective interventions.

METHODS

This systematic review included randomized controlled trials of text message lifestyle interventions involving adolescents aged 10 to 19 years with outcomes focused on obesity prevention or management. Primary outcome was objective or self-report change in BMI.

RESULTS

In total, 4362 records were identified, and 215 full-text articles were assessed for eligibility. A total of 8 unique studies were identified, including 767 participants, mean age 14.3 (SD 0.9) years, BMI 29.7 (SD 1.6) kg/m2 and 53.1% (407/767) female (31/101, 30.7%-172/172, 100.0%). All interventions were multicomponent. The median active intervention period was 4.5 months. During the active and extended intervention phases, text messages accounted for >50% (8 studies) and >85% (3 studies) of contact points, respectively. Text messages were heterogeneous, with a median of 1.5 text messages sent per week (range: 1-21). A total of 4 studies utilized two-way text message communication with health professionals Of the 8 studies, 7 demonstrated reductions in BMI or BMI z-score in the intervention group compared with the control at the end of the final follow-up. The effect was only statistically significant in 1 study at 6 months. Over 6 months, reductions in BMI (kg/m2) ranged from 1.3% to 4.5% and BMI z-score ranged from 4.2% to 28.1%. Overall quality of the studies was low.

CONCLUSIONS

Further research is required to elucidate the effectiveness and potential impact of text message interventions on weight and weight-related behaviors in adolescents.
The Development of the Military Service Identification Tool: Identifying Military Veterans in a Clinical Research Database Using Natural Language Processing and Machine Learning (Preprint)
Authors: Leightley Daniel , Pernet David , Velupillai Sumithra , Stewart Robert J , Mark Katharine M , Opie Elena , Murphy Dominic , Fear Nicola T , Stevelink Sharon A M
Published: August 2019

BACKGROUND

Electronic health care records (EHRs) are a rich source of health-related information, with potential for secondary research use. In the United Kingdom, there is no national marker for identifying those who have previously served in the Armed Forces, making analysis of the health and well-being of veterans using EHRs difficult.

OBJECTIVE

This study aimed to develop a tool to identify veterans from free-text clinical documents recorded in a psychiatric EHR database.

METHODS

Veterans were manually identified using the South London and Maudsley (SLaM) Biomedical Research Centre Clinical Record Interactive Search—a database holding secondary mental health care electronic records for the SLaM National Health Service Foundation Trust. An iterative approach was taken; first, a structured query language (SQL) method was developed, which was then refined using natural language processing and machine learning to create the Military Service Identification Tool (MSIT) to identify if a patient was a civilian or veteran. Performance, defined as correct classification of veterans compared with incorrect classification, was measured using positive predictive value, negative predictive value, sensitivity, F1 score, and accuracy (otherwise termed Youden Index).

RESULTS

A gold standard dataset of 6672 free-text clinical documents was manually annotated by human coders. Of these documents, 66.00% (4470/6672) were then used to train the SQL and MSIT approaches and 34.00% (2202/6672) were used for testing the approaches. To develop the MSIT, an iterative 2-stage approach was undertaken. In the first stage, an SQL method was developed to identify veterans using a keyword rule–based approach. This approach obtained an accuracy of 0.93 in correctly predicting civilians and veterans, a positive predictive value of 0.81, a sensitivity of 0.75, and a negative predictive value of 0.95. This method informed the second stage, which was the development of the MSIT using machine learning, which, when tested, obtained an accuracy of 0.97, a positive predictive value of 0.90, a sensitivity of 0.91, and a negative predictive value of 0.98.

CONCLUSIONS

The MSIT has the potential to be used in identifying veterans in the United Kingdom from free-text clinical documents, providing new and unique insights into the health and well-being of this population and their use of mental health care services.
Millennials’ Contribution in Disaster Risk Reduction: Case Study of Tidal Flooding in Semarang
Authors: Octastefani Theresia , Rum Muhammad
Published: August 2019

This research focuses on the contribution of young millennials in reducing the risk of tidal flooding along the northern coast of Semarang. Young millennials have received special attention in disaster management, and the study of digital transformations in disaster management has become more significant. The objective of this study is to examine how smart disaster responses to natural disasters, specifically the case of tidal flooding in three districts of the city (North Semarang, Genuk, and Tugu) and a district nearby Demak Regency (Sayung). To obtain comprehensive results, this research uses qualitative methods, which data collected through in-depth interviews; Focus Groups Discussion (FGD); observations; and desk studies. This study finds that Millennials’ involvement is very important due to their distance from political interests and innovatively able to offer strategies in reducing the problems caused by tidal floods. The involvement of millennials in disaster management is relevant, given that Semarang will soon enjoy the demographic bonus, i.e. have a significant percentage of its population of productive age. Lastly, this research argues that vibrant public participation in disaster management can only be possible under democratic circumstances. As the implication, the study on public active participation might help disaster risk reduction campaign.
Combination of Functional Magnetic Resonance Imaging and Histopathologic Analysis to Evaluate Interstitial Fibrosis in Kidney Allografts
Authors: Wang Wei , Yu Yuanmeng , Wen Jiqiu , Zhang Mingchao , Chen Jinsong , Cheng Dongrui , Zhang Longjiang , Liu Zhihong
Published: August 2019

Background and objectives

Recent developments indicated that functional magnetic resonance imaging (MRI) could potentially provide noninvasive assessment of kidney interstitial fibrosis in patients with kidney diseases, but direct evidence from histopathology is scarce. We aimed to explore the diagnostic utilities of functional MRI for the evaluation of kidney allograft interstitial fibrosis.

Design, setting, participants, & measurements

We prospectively examined 103 kidney transplant recipients who underwent for-cause biopsies and 20 biopsy-proven normal subjects with functional MRI. Histomorphometric analyses of interstitial fibrosis and peritubular capillary densities were performed on digitally scanned Masson’s trichrome- and CD34-stained slides, respectively. The performances of functional MRI to discriminate interstitial fibrosis were assessed by calculating the area under the curve using receiver-operating characteristic curve.

Results

Main pathologic findings in this single-center cohort were representative of common diagnostic entities in the kidney allografts, with rejection (32%) and glomerulonephritides (31%) accounting for the majority of diagnoses. Apparent diffusion coefficient from diffusion-weighted imaging correlated with interstitial fibrosis (ρ=−0.77; P<0.001). Additionally, decreased arterial spin labelings were accompanied by peritubular capillary density reductions (r=0.77; P<0.001). Blood oxygen level–dependent (BOLD) imaging demonstrated cortical hypoxia with increasing interstitial fibrosis (ρ=0.61; P<0.001). The area under the curve for the discrimination of ≤25% versus >25% interstitial fibrosis and ≤50% versus >50% interstitial fibrosis were 0.87 (95% confidence interval [95% CI], 0.79 to 0.93) and 0.88 (95% CI, 0.80 to 0.93) by apparent diffusion coefficient, 0.92 (95% CI, 0.85 to 0.97) and 0.94 (95% CI, 0.87 to 0.98) by arterial spin labeling, 0.81 (95% CI, 0.72 to 0.88) and 0.86 (95% CI, 0.78 to 0.92) by perfusion fraction, 0.79 (95% CI, 0.69 to 0.87) and 0.85 (95% CI, 0.76 to 0.92) by BOLD imaging, respectively.

Conclusions

Functional MRI measurements were strongly correlated with kidney allograft interstitial fibrosis. The performances of functional MRI for discriminating ≤50% versus >50% interstitial fibrosis were good to excellent.
DEVELOPMENT AND ESTIMATION OF ANTI-INFLAMMATORY ACTIVITY OF TOPICAL ETORICOXIB EMULGEL BY CARRAGEENAN INDUCED PAW OEDEMA METHOD
Authors: Adegbenro Obanewa Opeyemi , Opeyemi Oyeniran Taiwo
Published: August 2019

Emulgel is one of the emerging topical drug delivery system for the delivery of hydrophobic drugs which overcome various disadvantages of ointments and creams such as greasiness and phase inversion. Etoricoxib is poorly aqueous soluble Non steroidal Anti-Inflammatory Drug (NSAID). It is used in osteoarthritis, rheumatoid arthritis, acute gouty arthritis, ankylosing spondylitis, low back pain, acute postoperative pain, and primary dysmenorrheal. Its oral delivery is associated with greater chance of adverse effects or therapeutic failure and large amount of drug is lost in the vicinity of the target organ. Also oral administration of etoricoxib causes gastro-intestinal irritation. The aim of the present study was to develop an emulgel formulations using the gelling agent like Carbopol 934 and HPMCK4M with emulsifiers like Span 20 and Tween 20. Six emulgel formulations were developed and evaluated on different parameters like physical appearance, pH, viscosity, extrudability, drug content, spreadability, In-vitro diffusion studies, and skin irritation test. Best formulation of batch EG1 was further evaluated for stability study and anti-inflammatory activity in carrageenan induced rat paw edema. Anti-inflammatory effect of formulation EG1 was compared with standard market product Indomethacin.
PREVALENCE AND POTENTIAL RISK FACTORS OF HEPATITIS B VIRUS IN A SAMPLE OF CHILDREN IN TWO SELECTED AREAS IN YEMEN
Authors: Al-Shamahy Hassan A. , Ajrah Mohammed Auad , Al-Madhaji Anwar G , Al-Fraji Basam Basim Mohammed , Ajrah Mohammed Auad Ajrah , Al- Hajj Manal Mutaher Ali , Al-Hadad Ahmed Mohamed
Published: August 2019

The global epidemic of hepatitis B is a significant public health problem. The endemicity of HBV infection used to be believed high in Yemen. Data for the prevalence of HBsAg among children in rural and urban areas in Yemen is scarce and incompetent. The study was made to determine prevalence of HB surface antigen among children in 2 selected areas in Yemen. Eight hundred forty and 212 children were randomly chosen from Sana'a city and Shabowah governorate, respectively. Sera were tested for HBs antigen by ELISA technique, and HB genome was tested for positive HB surface antigen specimens to confirm positivity using polymerase chain reaction (PCR) -based test. Each's data collected in a pre-designed questionnaire including sex, age, and risk factors of HBV and prior vaccine of HBV. The prevalence of HB surface antigen among children in Sana'a city was only 1.8%, and in Shabowah governorate was 3.8%. There was a significant association of non-vaccinated children, birth by cesarean, and with a history of parental exposure with contracting HBV infection. Evidence from these studies in Yemen suggests that there is a steady increase in exposure to HBV over a lifetime. Hospital-acquired HBV infection is common in Yemen, and high vaccination coverage rate should be achieved, particularly in rural areas, in parallel with health education.
COMPARATIVE CHARACTERIZATION OF ANTIOXIDANT PROFILE OF VITAMIN-E AND RED DATES IN PLACEBO AND TESTED GROUPS OF HYPERLIPIDEMIC PATIENTS
Authors: Murad Shah , -Ur-Rehman AIjaz , Khokhar Abdul Qadir , Khokhar Aamna , Khan Moosa , Moeen-Ud-Din Hafiz , Ghaffar Abdul
Published: August 2019

Antioxidants are nutrients that help minimize free-radical damage to the body. Free radicals are highly reactive compounds that are created in the body during normal metabolic functions or introduced from the environment, such as by exposure to pollution and other toxins. Inherently unstable, free radicals contain "extra" energy which they try to reduce by reacting with certain chemicals in the body, which interferes with the cells' ability to function normally. Current study compared antioxidant characteristics of vitamin-E and red Dates. It was placebo-controlled conducted study conducted at general hospital Lahore Pakistan from January 2018 to march 2018. LDL-cholesterol was calculated as total cholesterol- HDL-cholesterol-VLDL-cholesterol;VLDL-cholesterol was measured directly after ultracentrifugation. After one month therapy their post treatment lipid profile was determined and analyzed statistically by using SPSS version 2.2.01 2013. Paired‘t’ test was applied for mean values with SD of the parameters before and after treatment. Results showed highly significant change in LDL-cholesterol of group-II patients but HDL-cholesterol was increased 6.6 mg/dl, still it was significant change with p-value of <0.01. In group-III LDL-cholesterol was decreased 10.9 mg/dl which is significant change with p-value <0.01. HDL-cholesterol in this group was increased 4.2 mg/dl which is non significant with p-value of >0.05. Study concluded that red dates have antioxidant potential by lowering LDL-cholesterol in human plasma. But this effect is not comparable with hypolipidemic effects of Vitamin E as it also increases good cholesterol i.e. HDL-cholesterol.
JORNALISMO CIENTÍFICO NAS AULAS: A VISÃO DE PROFESSORES DE UMA ESCOLA DE EDUCAÇÃO BÁSICA
Authors: Kaminski Márcia Regina , Cunha Marcia Borin da , Boscarioli Clodis
Published: August 2019

O Jornalismo Científico exerce um papel relevante para a sociedade, pois possibilita o acesso a informações sobre Ciência e Tecnologia, tornando-se uma forma de apresentar esse conteúdo à população. Considerando a importância social e as contribuições que pode trazer à formação crítica dos estudantes já nos anos iniciais, este trabalho investiga a visão dos professores de uma escola de educação básica, da Rede Municipal de Ensino da cidade de XXXXX/YY, sobre a importância do trabalho sistemático com materiais de Jornalismo Científico para o ensino. Como metodologia, foi utilizada pesquisa qualitativa, de natureza interpretativa, por meio de um questionário para a coleta de dados. Os resultados indicam que a maior parte dos professores tem a compreensão da importância do trabalho com Jornalismo Científico nos processos de ensino e aprendizagem e utilizam com frequência regular em suas aulas. Uma parcela do grupo admite, no entanto ainda não fazer uso de materiais dessa natureza como instrumento pedagógico. A pesquisa aponta a necessidade de explorar o Jornalismo Científico em cursos de formação continuada para que haja um trabalho bem sucedido com a Divulgação Científica na escola.
RESENHA DO LIVRO RACISMO, SEXISMO E DESIGUALDADE NO BRASIL
Authors: Armindo Iasmim Lobão
Published: August 2019

Esta resenha do livro “Racismo, sexismo e desigualdade no Brasil” escrito por Sueli Carneiro e publicado em 2011, traz demandas, fracassos, encaminhamentos de projetos e avanços que dão visibilidade e representatividade à população negra. A obra apresenta alguns textos que a autora apresentou em uma coluna de opinião em um importante jornal brasileiro, durante anos, buscando articular temas em evidência às pressões do movimento negro por espaço social e político. Além disso, a obra também apresenta o cotidiano opressivo presente no âmbito da educação, saúde, acesso a emprego e habitação. A autora traz a maturação do pensamento político que se difunde a partir do meio negro, abrindo caminho para a reflexão sobre os limites da nossa “democracia”, visto que a população negra, que constitui a maioria da população brasileira, continua lutando por acesso a recursos públicos que podem sustentar políticas de combate ao racismo, à discriminação e de superação das desigualdades raciais.
POSSIBILIDADES DE ARTICULAÇÃO ENTRE O ATENDIMENTO EDUCACIONAL ESPECIALIZADO E O ENSINO DE CIÊNCIAS: UM ESTUDO SOBRE INCLUSÃO
Authors: Oliveira Juliani Flávia de , Ferraz Denise Pereira de Alcantara , Ribeiro Vívian Martins
Published: August 2019

A escola inclusiva tem como finalidade proporcionar ao Público-Alvo da Educação Especial (PAEE) uma escolarização que atenda às especificidades de cada aluno. Diante disso, a legislação brasileira garante um serviço de Atendimento Educacional Especializado (AEE) em Salas de Recursos Multifuncionais (SRM) de caráter complementar e suplementar para este público. Sendo o ensino de Ciências ao PAEE ainda um desafio aos professores, este artigo decorre de pesquisa que teve como objetivo analisar as possibilidades de articulação entre o AEE e os professores de ensino de Ciências nas escolas de uma cidade do sul de Minas Gerais. A pesquisa buscou responder às seguintes questões norteadoras: Como ocorre a articulação entre o AEE e os professores de Ciências da classe regular? Que metodologias de ensino são utilizadas? Como é realizado o processo avaliativo? Qual é o papel da gestão escolar? A fim de responder tais questões, foram realizadas entrevistas semiestruturadas com professores e gestores. Os dados foram analisados qualitativamente. Concluiu-se que a articulação entre o AEE e os professores de Ciências é falha no contexto analisado, pois o enfoque do AEE está voltado para alfabetização e para operações básicas matemáticas, levando os professores de Ciências a elaborarem suas atividades separadamente. Há falta de apoio da gestão escolar, pois não se estabelece um ambiente propício a uma perspectiva colaborativa entre os diversos âmbitos escolares. Práticas inclusivas foram evidenciadas, como a preferência pela utilização de recursos multissensoriais durante as aulas, assim como avaliações individualizadas. A sensação de incompetência em lidar com a diversidade que compreende o PAEE se apresentou como a principal dificuldade dos professores, bem como a demanda excessiva de serviços do AEE. Diante disso, enfatiza-se a importância de reflexões acerca da inclusão escolar e dos aspectos da formação destes profissionais para que se estabeleça um ensino de qualidade a todos os alunos.
Technology Use to Deliver Faculty Development: A CERA Study
Authors: Minor Suzanne , Baker Suzanne , Drowos Joanna , Antoun Jumana , Baker Dennis , Harrison Suzanne Leonard , Chessman Alexander W.
Published: August 2019

Introduction: Technology provides a platform to help address individualized training needs for community preceptors who are separated from the campus and pressured to achieve clinical productivity goals. This study explores technology use and support for delivering faculty development to community preceptors.
Methods: This cross-sectional study was part of the 2017 Council of Academic Family Medicine’s (CAFM) Educational Research Alliance (CERA) annual survey of family medicine clerkship directors in the United States and Canada.
Results: The majority of respondents (n=62, 68.9%) agreed or strongly agreed that “using technology is critical to the successful delivery of faculty development to community preceptors.” Only one-third (n=31) agreed or strongly agreed that their institution offers them adequate support to create and deliver technology-mediated faculty development or offers adequate support to community preceptors for accessing and using technology.
Conclusions: Clerkship directors need institutional support to provide effective faculty development to preceptors via technology. The opportunity exists for institutions, national organizations, and professions to collaborate across disciplines and health professions on technology-based faculty development to support a level of quality and engagement for faculty development that is consistent with the levels we bring to student education.
Gênero: breve história de um conceito
Authors: Luiza Heilborn Maria , Rodrigues Carla
Published: August 2019

O objetivo desse artigo é discutir a importância da construção do conceito de gênero em diversoscampos de estudos, seguindo um percurso que pretende argumentar em favor do conceito de gênero comoimportante operador para a crítica de situações sociais específicas nas quais as mulheres ainda são subjugadas,tomando como exemplos o mercado de trabalho e o ambiente da família e sustentando sua importância no âmbitoda educação.
Uma experiência na escola sobre gênero e sexualidades
Authors: Georg Schindhelm Virginia , Alves da Silva Junior Jonas
Published: August 2019

Este trabalho relata uma experiência vivenciada num curso superior de formação de profesores e aangústia e desconhecimento de alunos para lidar com a presença de um colega trajado com roupas e adereçosfemininos. Refletimos sobre experiência e vivência e modos de ser/estar no mundo como produções subjetivas erelacionais, que se manifestam por inúmeras formas de apresentar-se como homem ou mulher e que se configuramcomo processos minuciosos, sutis e sempre inacabados de construções pessoais e culturais. O objetivo éproblematizar a condição de crianças e jovens e experiências escolares, a partir de questões que envolvemdiversidade cultural e diferença, estereótipos, preconceitos, discriminação e desigualdade, que forneceminstrumentos analíticos para abordar as complexas relações de gênero e sexualidades no processo escolar. O desafioé dar visibilidade a um sujeito que difere daquele homogeneizado e até mesmo universal. Busca-se aprofundar equestionar as concepções e as práticas educativas com sujeitos brasileiros na perspectiva de gênero e sexualidadespara a construção de pedagogias que não transformem diferenças em desigualdades. Vivenciar as diferentessexualidades na escola implica reconhecer as múltiplas formas de experimentar prazeres e desejos, de dar e receberafetos, de amar e ser amado que são ensaiadas e ensinadas nas culturas. Essa variedade assusta, desestabiliza, fogede controles e de normas, por isso descontroem certezas, verdades e padrões. Nosso compromisso docente envolveconstrução de conhecimentos e processos sensíveis para desestabilizar padrões normalizadores que funcionamcomo forças em campos problemáticos como o de gênero e das sexualidades na escola.
Climate change opinions in online debate sites
Authors: Groza Adrian , Ozturk Pinar , Razvan-Slavescu Radu , Marginean Anca
Published: August 2019

Debate sites in social media provide a unified platform for citizens to discuss controversial questions and to put forward their ideas and arguments on the issues of common interest. Opinions of citizens may provide useful knowledge to stakeholders but manual analysis of arguments in debate sites is tedious, while computational support to this end has been rather scarce. We focus here on developing a technical instrumentation for making sense of a set of online arguments and aggregating them into usable results for policy making and climate science communication. Our objectives are: (i) to aggregate arguments posted for a certain debate topic, (ii) to consolidate opinions posted under several but related topics either in the same or different debate site, and (iii) to identify possible linguistic characteristics of the argumentative texts. For the first objective, we propose a voting method based on subjective logic [13]. For the second objective, we assess the semantic similarity between two debate topics based on textual entailment [28]. For the third objective, we employ various existing methods for lexical analysis such as frequency analysis or readability indexes. Although we focused here on the climate change, the method can be applied to any domain.
Towards a software-based mobility management for 5G: An experimental approach for flattened network architectures
Authors: Calle-Cancho Jesús , Mendoza-Rubio José-Manuel , González-Sánchez José-Luis , Cortés-Polo David , Carmona-Murillo Javier
Published: August 2019

The number of mobile subscribers, as well as the data traffic generated by them, is increasing exponentially with the growth of wireless smart devices and the number of network services that they can support. This significant growth is pushing mobile network operators towards new solutions to improve their network performance and efficiency. Thus, the appearance of Software Defined Networking (SDN) can overcome the limitations of current deployments through decoupling the network control plane from the data plane, allowing higher flexibility and programmability to the network. In this context, the process of handling user mobility becomes an essential part of future mobile networks. Taking advantage of the benefits that SDN brings, in this article we present a novel mobility management solution. This proposal avoids the use of IP-IP tunnels and it adds the dynamic flow management capability provided by SDN. In order to analyse performance, an analytical model is developed to compare it with NB-DMM (Network-based DMM), one of the main DMM (Distributed Mobility Management) solutions. Additionally, performance is also evaluated with an experimental testbed. The results allow handover latency in real scenarios and numerical investigations to be measured, and also show that SR-DMM achieves better efficiency in terms of signaling and routing cost than NB-DMM solution.
Architecting business process maps
Authors: Poels Geert , García Félix , Ruiz Francisco , Piattini Mario
Published: August 2019

Process maps provide a high-level overview of an organization?s business processes. While used for many years in different shapes and forms, there is little shared understanding of the concept and its relationship to business process architecture. In this paper, we position the concept of process map within the domain of architecture description. By ?architecting? the concept of business process map, we identify and clarify diverging views of this concept as found in the literature and set requirements for describing process maps. A meta-model for a process mapping language is produced as a result. The proposed meta-model allows investigating the suitability of EA modelling languages as a basis for defining a domain-specific language for process mapping along with the creation of a better understanding of business process architecture in relation to enterprise architecture, which can be beneficial for both BPM and EA professionals.
Loss of offsite power accident analysis in a VVER-1000/V446 nuclear power plant
Authors: Esfandiari Mohsen , Jahanfarnia Gholamreza , Sepanloo Kamran , Zarifi Ehsan
Published: August 2019

The aim of this study is to present a thermo-hydraulic analysis of the loss of offsite power accident in VVER-1000/V446 nuclear power plant using the RELAP5 code. Loss of offsite power accident would lead to the unavailability of major active safety systems, and that the safety criteria ensuring a secure operation of the nuclear power plant would be violated, resulting in core heat-up with possible core degradation. Therefore, the analysis and investigation of the plant, during this accident, is very important. For this purpose, different behaviors of major components in the primary and the secondary sides of the reactor coolant system are studied. In this paper, the reactor is simulated by using RELAP5 system code. The results show a reasonable agreement with the developed model and also with the Bushehr nuclear power plant final safety analysis reports.
Personal Versus Professional Continuous Glucose Monitoring: When to Use Which on Whom
Authors: Longo Rebecca , Sperling Scott
Published: August 2019

IN BRIEF With the introduction of intermittently scanned continuous glucose monitoring (CGM) systems to the marketplace, providers and patients now have several options to continuously monitor glucose levels. This article addresses appropriate patient selection criteria for using patient- or practice-based CGM systems and the barriers to achieving optimal benefits from this technology. The authors have developed a flowchart to guide clinicians and patients in decision-making regarding the most appropriate type of CGM to use in various circumstances.
Automated Insulin Delivery Algorithms
Authors: Cinar Ali
Published: August 2019

IN BRIEF Automated insulin delivery (AID; also known as artificial pancreas) has improved the regulation of blood glucose concentrations, reduced the frequency of hyperglycemic and hypoglycemic episodes, and improved the quality of life of people with diabetes and their families. Three different types of algorithms—proportional-integral-derivative control, model predictive control, and fuzzy-logic knowledge-based systems—have been used in AID control systems. This article will highlight the foundations of these algorithms and discuss their strengths and limitations. Multivariable artificial pancreas and dual-hormone (insulin and glucagon) systems will be introduced.
Is There an App for That? The Pros and Cons of Diabetes Smartphone Apps and How to Integrate Them Into Clinical Practice
Authors: Ahn David T. , Stahl Rachel
Published: August 2019

IN BRIEF Diabetes applications for electronic devices (apps) leverage the computing power and wireless connectivity of smartphones to offer unique advantages over more traditional tools such as paper logbooks and glucose meters. As these apps and the devices they connect with continue to evolve, health care providers play an important role in guiding patients by recommending specific apps, demonstrating best practices on their usage, and cautioning against their limitations.
Reusability Study of Sulfated Zirconia Functionalized SBA-15 Catalyst for Biolubricant Oil Production from Oleic Acid
Authors: Rangganita F R , Hermida L , Angraeni A , Khoirunnisa D
Published: August 2019

Sulfated zirconia functionalized SBA-15 catalsyt (SZr-SBA-15) was prepared byreacting SBA-15 with Zirkoniumoxychloride and urea at 90oC to form ZrO2-SBA-15. Then, ZrO2-SBA-15 was reacted with H2SO4 at room temperature to produceSZr-SBA-15 catalsyt.. The catalyst was characterized in terms of adsorptiondesorption nitrogen analysis, SEM-EDX and FTIR. Based on SEM-EDX andadsorption-desorption nitrogen analysis results, it was found that Zr had beenincorporated in SBA-15. By using the SZr-SBA-15 catalyst, esterification reactionof oleic acid with TMP to produce biolubricant oil of Trimethylolpropanetrioleatachieved 85% oleic acid conversion and selectivity of 63,7%. Reusability study ofSZr-SBA-15 catalyst was carried out for 3 rounds of reaction. It was found that thecatalyst could be used up to 3 rounds without significant decrease in activityKeywords: biolubricant oil, catalyst reusability, sba-15, sulfated zirconia.
The Potentials of Improving Mineral Source Additional Values in Lampung Province – A Preliminary Study
Authors: Isnugroho K , Birawidha D C , Amin M
Published: August 2019

An initial research on non-metal mineral potential was conducted for stones inLampung Province. Surveys were conducted to some districts/towns in Lampung to takesample materials. Non-metal mineral chemical composition content analysis of stoneswas conducted with X-RF method. Lampung had mineral potentials of feldspar, zeolite,kaolin, and basalt of 400,500,000 m3; 18,945,000 m3; 9,750,000 m3; 419,071,833 m3respectively. These mineral source potentials were distributed in eight districts inLampung. Processing was required to improve additional values for these mineralsources, including crushing, grinding, classifying, and concentration process.Concentration improvements were required for feldspar and kaolin minerals. Wet highintensity magnetic separator process followed by froth flotation process becamesolutions to reduce high oxide iron content. Feldspar and kaolin could be used for suchindustries of ceramic, glass, paper, and refractory. Meanwhile, the zeolite mineral fromLampung could be used for agriculture, plantation, and fishery. Basalt stone wouldhave additional values when this was processed into cast basalt, fiber, and ceramiccomposite.Keywords: feldspar, kaolin, basalt, zeolite, Lampung