bluuebunny/crossref_metadata_2025 huggingface dataset:
PENGARUH SPREAD, MARKET VALUE, VARIANCE RETURN DAN DIVIDEND PAYOUT RATIO TERHADAP HOLDING PERIOD SAHAM
Authors: Utami Ni Luh Ayu Yulita , Sedana Ida Bagus Panji
Published: March 2018

The purpose of this study was to determine the effect spreads, market value, variance return and dividend payout ratio of the holding period of the stock chemical and basic industry sectors 2011-2014 period. The study was conducted using the method of non-participant observation, the data used is secondary data obtained in the Indonesia Stock Exchange (IDX) through the site www.idx.co.id. The sample used in the study of eight companies which were determined using purposive sampling method. The analysis technique used in this research is multiple linear regression. Based on the analysis, variable spreads had a negative influence is not significant, the market value has a significant negative effect, return variance has no significant negative effect and the dividend payout ratio has a significant positive pengeruh. Simultaneously independent variables significantly influence the holding period. Based on the results of this study should investors pay attention to the variable market value and the dividend payout ratio that has a significant influence on the holding period
Developing Social Solidarity through Digital Media
Authors: Maryani Eni
Published: March 2018

This research raises the issue on digital media by activists in an effort to gain wider public involvement towards the social transformation process based on social solidarity. The development of digital media broadens the space to raise a range of marginal issues in public spaces controlled by predominant social groups. Digital media provides elite and mainstream media an opportunity for counter public spheres to dominate issues. Data collection is conducted through interviews and observation. There are both opportunities and challenges in utilizing digital media in building social solidarity. Characteristics of digital media allows a faster reach of a wider and diverse audience as well as generate an increasingly fierce global competition. Technologically, digital media only gives a very short opportunity to hold the audience’ attention. Therefore, communication between humans is still needed to strengthen and build public trust. The occurrence of a communication has significant effect when online media that are parallel with activities and issues that are offline, demands both forms of communication to be used simultaneously.
An Introduction to NATO Standard ANEP (Allied Naval Engineering Publication) 77 and Its Application to Naval Ships
Authors: Delpizzo Richard D. , Valluri Sharat
Published: March 2018

In a dynamic world of continuously evolving design and application of innovative new technologies, it is proving increasingly challenging to apply the traditional approach of prescriptive-based standards. As a result, attention has focused on the increased use of a goal based philosophy over the detailed technical standards often incorporated in rules and regulations.  A successful application of this approach has been witnessed in providing goal based requirements to the design of safety for naval vessels.
Objetos Rituales
Authors: Ruíz Solórzano Jaime
Published: March 2018

El presente artículo es un texto crítico sobre la obra de Martha Eugenia Pachón Rodríguez, egresada del programa de Artes Visuales de la Universidad Surcolombiana, quien actualmente reside y desarrolla su trabajo creativo en Italia. Este texto inicialmente fue publicado en Faenza con traducción al italiano y al inglés por Emma Suñol y Romana Malbasa, respectivamente.1 Se incluye aquí con el fin de explicar las imágenes contenidas en esta edición de la revista Paidea Surcolombiana y, simultáneamente, divulgar la obra de esta artista de nuestra Región.El texto aborda en orden secuencial: una breve memoria de sus actividades y características personales como estudiante; la aproximación al trasfondo cultural de sus obras; un rastreo de las tradiciones artísticas que ha influenciado su lenguaje creativo; la síntesis del proceso de creación; la interpretación de imágenes metafóricas a partir del análisis de las forma y el contenido.
Integración curricular en torno a la gestión de proyectos ambientales escolares (PRAES): La riqueza de los recursos hídricos de la ciudad de Neiva
Authors: Vera S. Alhim Adonai , Avendaño Rodríguez Álvaro , Losada Pérez Fabio , González Pinzón Fanny Mercedes
Published: March 2018

La universidad Surcolombiana comprometida con la preservación de la riqueza de los recursos hídricos de la ciudad de Neiva, ha desarrollado con profesores y estudiantes un estudio de sus quebradas para construir a través de los proyectos ambientales escolares (PRAES) una nueva manera de vivir en armonía con las fuentes hídricas. Se pretende proponer un nuevo estilo de vida con el apoyo de las instituciones educativas que nos permitan a través de la formación de los ciudadanos, disfrutar el agua, que ya comienza a ser escasa en la ciudad.La universidad Surcolombiana está inmersa en una propuesta que inevitablemente compromete la transformación de los valores políticos, económicos, académ icos, urbanísticos, productivos, empresariales, comerciales, y comunitarios frente al futuro de la preservación de las quebradas por sus implicaciones en el bienestar de la sociedad.
Educación civilización y desarrollo
Authors: Posada M. Myriam R.
Published: March 2018

El título Educación, Civilización y Desarrollo sintetiza las relaciones intertextuales, multiculturales y temáticas, asociadas con problemas educativos, políticos y sociales poetizados en obras literarias latinoamericanas. Se reseña la obra de Sarmiento, Facundo o Civilización y Barbarie como referente discursivo del tema poetizado y del discurso pedagógico vigente en la sociedad latinoamericana.
La práctica como fuente del conocimiento humano
Authors: Rojas Losada Nohora
Published: March 2018

En el presente artículo se analizan, a través de una exposición sencilla pero profundamente pedagógica, las características del desarrollo del conocimiento y del proceso de aprendizaje del niño, a partir de la práctica y como resultado de la conjunción de las sensaciones y las percepciones. El argumento central se fundamenta primero: en que el hombre conoce el mundo para dominarlo en la práctica, para transformarlo y satisfacer sus necesidades; segundo: el conocimiento teórico y la práctica deben forman una sólida unidad; tercero: Adquirir nuevos conocimientos y capacidades, quiere decir desde el punto de vista fisiológico, formar en la corteza cerebral un enlace, lo cual es solamente posible cuando la corteza cerebral y sus respectivos centros nerviosos se encuentran en un estado de estímulo especial.
Comparación de variables fisiológicas cardio-respiratorias durante el ejercicio entre estudiantes de medicina
Authors: Riveros Pérez Efraín , García Francisco , Valero Adriana , Roa Marcela , Rojas Pilar
Published: March 2018

Objetivo: evaluar el efecto de un programa de ejercicio de tres semanas sobre variables cardio-respiratorias en un grupo de estudiantes de Medicina de la Universidad de Boyacá.Metodología: tipo de estudio, experimento controlado aleatorizado. Un grupo de 100 estudiantes de tercer semestre de Medicina, sedentarios, se aleatorizó por medio de tabla numérica. Los sujetos del grupo experimental (n= 44) hicieron ejercicio (trote) por media hora diaria durante tres semanas. El grupo control (n= 56) continuó con sus hábitos sedentarios habituales. Después del periodo de tres semanas, todos los estudiantes realizaron la prueba de ejercicio de Course-Navette. Se registraron las variables frecuencia cardiaca, frecuencia respiratoria, presión arterial diastólica y sistólica, saturación parcial de oxígeno y capacidad vital tanto en reposo como en el periodo post-ejercicio inmediato. También se registraron el consumo de oxígeno máximo y la velocidad durante la prueba. Se hicieron comparaciones de las variables antes y después del ejercicio. Resultados: se encontraron diferencias estadísticamente significativas en las variables presión arterial diastólica (p<0,045), frecuencia cardiaca (p<0,05) y consumo de oxígeno máximo (p<0,05) entre los dos grupos después del ejercicio, siendo mayores los valores de las tres variables en el grupo que no hizo ejercicio. Conclusiones: la rutina de ejercicio (trote) durante tres semanas, atenúa los cambios de frecuencia cardiaca, presión arterial diastólica y consumo de oxígeno en una población joven sana con hábitos basales de sedentarismo.
Lepra lepromatosa con reacción leprótica II tipo eritema nodoso leproso complicada con enfermedad arterial periférica
Authors: Henríquez Rafael , Díaz Germán Augusto
Published: March 2018

La lepra es tan antigua como la humanidad, no obstante, aún se investigan numerosos aspectos relacionados con varios factores, como son su agente etiológico, epidemiología, clínica, reacciones y tratamientos que se desarrollan dentro de su contexto evolutivo. La tendencia actual indica que ha disminuido mundialmente la incidencia y prevalencia, sin embargo los episodios reacciónales que se dan en su evolución se presentan en un alto porcentaje. Las causas de estas complicaciones no son aun completamente entendidas pero se trabaja arduamente buscando conocer las intimidades de las reacciones lepróticas. Estos estados se presentan en todo el espectro de la enfermedad y el eritema nodoso es una complicación importante y frecuente en los enfermos multibacilares.A esta complicación propia de la lepra, se agrega al presente caso otra patología denominada enfermedad arterial periférica que complicó de forma severa el cuadro de lepra lepromatosa mas reacción leprótica, produciendo necrosis tisular de miembros inferiores por isquemia crítica . En este caso hubo dificultades diagnosticas por el cuadro bizarro que se presentó al inicio de las complicaciones, sin embargo, después del seguimiento durante un año se llegó a la conclusión de que el paciente cursaba con dos entidades diferentes.
Effectiveness of Health Promotion to Community-Based Total Sanitation Outcomes in Nunsaen, Kupang, Indonesia
Authors: Salesman Frans
Published: March 2018

The Community-Based Total Sanitation Program has reached 94.95% of villages in Indonesia. However, not all villages implement the four pillars of community-based total sanitation, including the village of Nunsaen. The low outcomes of community-based total sanitation in Nunsaen village in 2016 reached 76% of 542, impacting on average 63% of the population, who suffer from infectious diseases every year. The non-implementation of health promotion strategies through advocacy, and lack of empowerment of working groups to improve community-based total sanitation outcomes in Nunsaen village. A retrospective study with Case Control approach with triggers through advocacy and empowerment to a sample of 134 family heads. Health promotion strategies through effective advocacy affect community-based total sanitation outcomes (Pvalue = 0,0001; and OR = 8,444), meaning that the effectiveness of advocacy effects is more than three times as likely to improve community-based sanitation outcomes by 8.44 times than if advocacy conducted less than three times. If in terms of OR scale, the effectiveness of community empowerment has greater opportunity (OR = 46,943) than advocacy (OR = 8,444) towards the total community-based sanitation outcome in Nunsaen village. The conclusion are Improving the effectiveness of community-based sanitation implementation requires advocacy and community empowerment by types and techniques determined by the program to achieve healthy and hygienic behavioural changes as the goal of community-based sanitation programs.
Comparative Quantitative Analysis of Diterpene Acids in Raw Material of Salvia officinalis, Salvia tesquicola and Salvia nutans
Authors: V A Kurkin , M. Ryzhov V. , A. Shmygareva A. , A. Nikandrova M.
Published: March 2018

The quantitative analysis of diterpene acids in raw materials of closely related species of genus Salvia was carried out.
The objects of present research were Salvia officinalis L., Salvia tesquicola Klokov and Pobed., Salvia nutans L., which
grow in neighboring south (Samara and Orenburg) regions. During analysis different raw materials, such as herbs and
leaves, were studied. It was determined that total amount of diterpene acids varies from 1,04% to 1,32% in leaves of
different species of Salvia and from 1,13% to 1,67% in herbs of different species of Salvia. The raw material of Salvia
nutans contains minimal amount of diterpene acids, but in the raw material of Salvia tesquicola the quantitative analysis
shows different results, which depend on the region. The medical raw material of Salvia officinalis, which is cultivated in
Samara region, includes sufficient amount of diterpene acids.
Nephroprotective Effect of Jatropha curcas Fruit Extracts Against Carbon Tetrachloride Induced Nephrotoxicity in Rats
Authors: M. Komail , A. Narendra Babu
Published: March 2018

The present study was undertaken to explore the nephroprotective potential of Jatrophacurcas fruit extracts against carbon
tetrachloride (CCl4) induced nephrotoxicity in rats. Nephrotoxicity was induced by CCl4 (3ml/kg body weight) in animals.
Blood biochemical parameters, urine analysis and histopathological studies were carried out to assess the nephroprotective
effect. CCl4 administration induced significant nephrotoxicity in rats, which was evident from enhanced levels of albumin,
potassium.From the obtained results it may be concluded that pretreatment of silymarin (50mg/kg dose orally) significantly
reversed carbon tetrachloride induced nephrotoxicitywhere asJatrophacurcas methanol extract (250mg/kg body weight)
showed significant effect against CCl4 induced nephrotoxicity in rats thanJatrophacurcas aqueous extract (p less than 0.001) for
most of the blood biochemical parameters, hematological parameters as well in attenuation of pathological changes in
kidney tissues.
In Vitro Evaluation of Antioxidant and Antimicrobial Activity of Carrot Peel
Authors: John Sheila , S. Priyadarshini , Monica Sarah Jane , C. Sivaraj , P. Arumugam
Published: March 2018

The objectives of the study were to assess the total phenolic content and flavonoid content, and to investigate the antioxidant and antimicrobial potential of carrot peel extracted with methanol and acetone. Total Phenolic content and Flavonoid
content was higher in carrot peel acetone extract (AE) i.e. 106.36 µg/mg of GAE and 27.83 µg/mg of QE respectively than
methanol extract (ME). Carrot peel acetone extract showed greater antioxidant capacity for DPPH radical scavenging
activity whereas methanol extract showed better result for FRAP reducing power and Phosphomolybdenum assay. Both
AE and ME could inhibit the growth of Shigella flexneri, E coli, Staphylococcus aureus and Klebsiella pneumonia. This
study substantiates the potential of carrot peel to be used as a novel functional food ingredient, natural antioxidant and
antimicrobial agent
Antimicrobial Activity of Chromolaena odorata Against Selected Pyogenic Pathogens
Authors: V. Hridhya K. , M. Kulandhaivel
Published: March 2018

A study of antimicrobial activity of the solvent extracts of Chromolaena odorata against the selected pyogens such as
Staphlylococcus epidermidis, Streptococcus pyogenes, Pseudomonas aeruginosa and Candida albican. The plant materials
were organoleptically evaluvated and pulverized. Using petroleum ether, benzene, chloroform, ethyl acetate, ethanol and
water the plant material was subjected to Successive Solvent Extraction method. These extracts were screened for
phytochemical components and tested for antimicrobial properties against the pyogens. The efficacy of the plant extracts
was compared with the commercial antibiotics. When comparing all the extracts of C.odorata, the ethanolic extract showed
more efficacy than the other extracts
Apoc Social: A Mobile Interactive and Social Learning Platform for Collaborative Solving of Advanced Problems in Organic Chemistry
Authors: Sievertsen Niels , Carreira Erick M.
Published: March 2018

Mobile devices such as smartphones are carried in the pockets of university students around the globe and are increasingly cheap to come by. These portable devices have evolved into powerful and interconnected handheld computers, which, among other applications, can be used as advanced
learning tools and providers of targeted, curated content. Herein, we describe Apoc Social (Advanced Problems in Organic Chemistry Social), a mobile application that assists both learning and teaching college-level organic chemistry both in the classroom and on the go. With more than 750 chemistry
exercises available, Apoc Social facilitates collaborative learning through discussion boards and fosters enthusiasm for complex organic chemistry.
SEGURANÇA DO PACIENTE: EXPERIÊNCIA DO SERVIÇO DE ATENDIMENTO MÓVEL DE URGÊNCIA
Authors: Oliveira Adelia Dalva da Silva , Guimaraes Maria do Socorro Oliveira , De Morais Eronice Ribeiro , Amorim Neta Francina Lopes , Cordeiro Eduardo Cairo Oliveira
Published: March 2018

Objetivo: relatar a experiência da elaboração e implantação do Plano de Segurança do Paciente no Serviço de Atendimento Móvel de Urgência de Teresina, Piauí. Método: Estudo descritivo do tipo relato de experiência, realizado no Serviço de Atendimento Móvel de Urgência (SAMU) de Teresina, Piauí. Resultados: O Plano de Segurança do Paciente foi elaborado e revisado pela equipe do Núcleo de Segurança do Paciente, aprovado pela Direção Geral e socializado entre os colaboradores do Samu. Contemplou três etapas: Gerenciamento de riscos clínicos e não clínicos e Gestão de riscos. Todos os membros da equipe do Samu foram capacitados por meio de apresentação de folder, contendo as metas do protocolo de segurança do paciente e orientações de como preencher o formulário de atendimento ao paciente. Conclusão: A implantação do Plano de Segurança do Paciente vem se mostrando importante para tornar o ambiente no Samu mais seguro para pacientes e colaboradores.Descritores: Segurança do paciente. Samu. Enfermagem.
PERFIL EPIDEMIOLÓGICO DOS CASOS DE TUBERCULOSE NO ESTADO DO MARANHÃO NOS ANOS DE 2012 A 2016
Authors: Oliveira Mara Sílvia Rocha , Sousa Luiza Cristiny , Baldoino Luciana Stanford , Alvarenga Alda Alves , Silva Maria Nauside Pessoa da , Elias Stefania da Costa Gomes , Macedo Luciana Soares , Silva Mara Ramel de Sousa
Published: March 2018

Objetivo: analisar o perfil epidemiológico da tuberculose no estado do Maranhão, Brasil de 2012 a 2016. Metodologia: Trata-se de um estudo epidemiológico, descritivo, de coleta retrospectiva, por meio de casos notificados pelo DATASUS referentes aos agravos de tuberculose diagnosticados em residentes no estado do Maranhão entre 2012 a 2016. As variáveis estudadas foram: raça, sexo, idade, escolaridade, município de residência, ano de diagnóstico e o tratamento. Resultados: Observou-se que os casos de tuberculose estiveram predominantemente em indivíduos com faixa etária de 20 a 39 anos (43,1%), com ensino fundamental incompleto (68,5%), de raça parda (70,5%) e sexo masculino (64,7%). Conclusão: As taxas de incidência notificadas de tuberculose no Estado do Maranhão durante os anos 2012 a 2016 tiveram pequenas oscilações. Observou-se que a tuberculose é um persistente problema de saúde pública.
Prioritisation of food-borne parasites in Europe, 2016
Authors: Bouwknegt Martijn , Devleesschauwer Brecht , Graham Heather , Robertson Lucy J , van der Giessen Joke WB ,   the Euro-FBP workshop participants
Published: March 2018

Background and aims

Priority setting is a challenging task for public health professionals. To support health professionals with this and in following a recommendation from the Food and Agriculture Organization of the United Nations (FAO) and World Health Organization (WHO), 35 European parasitologists attended a workshop from 8–12 February 2016 to rank food-borne parasites (FBP) in terms of their importance for Europe and regions within Europe. Methods: Countries were divided into European regions according to those used by the European Society of Clinical Microbiology and Infectious Diseases. We used the same multicriteria decision analysis approach as the FAO/WHO, for comparison of results, and a modified version, for better regional representation. Twenty-five FBP were scored in subgroups, using predefined decision rules. Results: At the European level, Echinococcus multilocularis ranked first, followed by Toxoplasma gondii and Trichinella spiralis. At the regional level, E. multilocularis ranked highest in Northern and Eastern Europe, E. granulosus in South-Western and South-Eastern Europe, and T. gondii in Western Europe. Anisakidae, ranking 17th globally, appeared in each European region’s top 10. In contrast, Taenia solium, ranked highest globally but 10th for Europe. Conclusions: FBP of importance in Europe differ from those of importance globally, requiring targeted surveillance systems, intervention measures, and preparedness planning that differ across the world and across Europe.
Seroprevalence of Coxiella burnetii antibodies and chronic Q fever among post-mortal and living donors of tissues and cells from 2010 to 2015 in the Netherlands
Authors: van Roeden Sonja E , Holsboer Eleonoor W , Oosterheert Jan Jelrik , van Kats Jorge P , van Beckhoven Jacqueline , Hogema Boris M , van Wijk Marja J
Published: March 2018

Background

After a large Q fever outbreak in the Netherlands in the period from 2007 to 2010, the risk of Q fever transmission through tissue and cell transplantation from undiagnosed chronic Q fever cases became a potential issue. Aim: We aimed to evaluate the risk of Q fever transmission through tissue and cell transplantation. Methods: We performed a retrospective observational cohort study among 15,133 Dutch donors of tissues and stem cells from 2010 to 2015 to assess seroprevalence of Coxiella burnetii antibodies, to identify factors associated with presence of C. burnetii antibodies, and to assess the proportion of undiagnosed chronic Q fever cases. Results: The study population consisted of 9,478 (63%) femoral head donors, 5,090 (34%) post-mortal tissue donors and 565 (4%) cord blood donors. Seroprevalence of C. burnetii antibodies gradually decreased after the outbreak, from 2.1% in 2010 to 1.4% in 2015, with a significant trend in time (p < 0.001). Of 301 seropositive donors, seven (2.3%) were newly detected with chronic Q fever (0.05% of all screened donors). Conclusion: This study shows that seroprevalence of C. burnetii antibodies among donors of tissues and cells in the Netherlands after 2014 was similar to pre-outbreak levels in the general population. The proportion of newly detected chronic Q fever patients among donors of tissues and cells was smaller than 0.1%. This study may prompt discussion on when to terminate the screening programme for chronic Q fever in donors of tissues and cells in the Netherlands.
Maternal Education Level and Child's Anxiety on Dental Extraction
Authors: Jeffrey Jeffrey , Meliawaty Florence , Rahaju Asih
Published: March 2018

Dental extraction can cause anxiety in children, observed in vital signs changes. If occursexcessively, it can be regarded as an obstacle and may affect a child's behavior that can furtherdetermine the success of dental treatment. Anxiety that occurs in children can usually be influencedby various factors, including the level of parental education. This study aimed to observe maternaleducation level and anxiety in children receiving dental extraction treatments. This is a descriptivestudy, involving 60 subjects aged 7-12 that went for dental extraction at Rumah Sakit Gigi MulutPendidikan Universitas Jenderal Achmad Yani (RSGMP UNJANI) Cimahi Juli-Desember 2016. Theparameters examined for measuring anxiety are body temperature, respiration frequency, and pulsebefore and after the procedure. This study found that 63.3% of mother of the subject had high schooleducation, 16.7% of junior high school, 8.3% S1, 6.7% D1/D3, and 5% SD. Increased bodytemperature was obtained in 36 subjects, increased respiration frequency in 46 subjects, andincreased pulse in 34 subjects. We concluded that the majority of maternal education levels in thisstudy are high school graduates and the anxiety parameters in the majority of subjects increase whenreceiving dental extraction procedure.Keywords: child's anxiety, dental extraction, mother education level
Muscle Mass and Quality of Life of Elderly People in Panti Tresna Werdha in Bandung
Authors: Stein Lambok K. K. , Wiramihardja Siska , Kulsum Iceu D.
Published: March 2018

The proportion of elderly continues to increase from year to year due to theincrease of life expectancy. Elderly will experience degenerative process related tomuscle mass. This can disrupt the quality of life. The aim of this study was to determinethe muscle mass and quality of life (QoL) in the elderly. This study used cross sectionalapproach with the number of subjects as many as 32 elderly residents of Tresna Werdhain Bandung. The tool used to measure muscle mass is BIA Tanita SC-240 while theinstrument used in measuring quality of life is the WHOQL-BREF questionnaire. Theresult showed that the mean value of muscle mass per unit body surface area was 22.86±2.20 kg/m 2 . The highest average value of QoL is the physical domain (59.15±8,06%)while the lowest is the environmental domain (42.97±11.11%). The conclusion of thisstudy is muscle mass possessed by elderly study participants is good. The QoL isclassified as moderate.Keywords: elderly people, muscle mass, quality of life,  WHOQL-BREF questionnaire
PERHITUNGAN DAN PERANCANGAN IGNITER BERBASIS KALKULASI PROPULSI ROKET (Studi Kasus Roket RX-320)
Authors: Samosir Ganda
Published: March 2018

The solid rocket motors, like all the LAPAN’s rocket, has been using the composite fuel of Hydroxyl Terminated Poly Butadiene (HTPB) type which is not easy to self-igniting. The quite extreme environment conditions are needed in order to ignite this non-hypergolic solid fuel, such as the ambiance pressure and temperature must be about 40 bar and 280°C respectively. The aforementioned conditions must be well given by the prime igniter designed or commonly known as igniter. The performance of an igniter could be very influenced by 2 (two) massive variables; first one is the internal factor, such as: squib ingredient, filament material, primer composition, igniter main charge, and the second one is external factor, such as: propellant’s type, dimension and the configuration of the rocket’s combustion chamber. In other word, chosen the proper rocket’s igniter are depending on the type and its mission.The propulsion calculation applied in this paper to design the igniter of the rocket RX-320, gives some major variables, i.e.: the biggest tube length; = 357 mm, its outside diameter; = 51 mm, total orifices and its diameter are 165 and 4 mm respectively. iL lcφ Keywords: Extreme conditions, Internal factors, External factors.
KRISTALISASI AMMONIUM PERKLORAT (AP) DENGAN SISTEM PENDINGINAN TERKONTROL UNTUK MENGHASILKAN KRISTAL BERBENTUK BULAT
Authors: Pinalia Anita
Published: March 2018

AP is the solid particles with the largest composition in compossite propellant, with fractions 60-80%. Rounded particles of AP indirectly gives better performance of propellant. Therefore we need experiment the crystallization process to produce rounded AP crystal. In this experiment, crystallization was conducted by using a controlled cooling system. Cooling is done through two stages and using a different coolant. The first stage of slow cooling using water (30°C), and continued rapid cooling with ethylene glycol (-27°C). These experiment generate 45.45 kg AP with a purity 99.67%, 40 mesh crystal size, crystal shape close to round, yield 39.71%. Keywords: Ammonium perchlorate, Crystallization, Rounded crystal
PEMODELAN SISTEM DAN ANALISIS KESTABILAN DINAMIK PESAWAT UAV (MODELING SYSTEM AND DYNAMIC STABILITY ANALYSIS OF UAV)
Authors: Budi Purwanto Eko
Published: March 2018

Mission of Unmanned Aerial Vehicle (UAV) “Elang Avionik” is surveillance and aerial photographs. Therefore the flight of UAV must be stable and controlable, and first step activity is dynamic modelling and stability analisys. The problems of UAV system is disturbance, noise of sensor, MIMO and uncertainty dynamic model. For good result using the multivariable robust control, with some step research that is: (1)modeling and stability analysis, (2) design and implementation of PID control system, (3) flight dynamic parameter identification, (4) design and implementation of hardware in the loop simulation, (5) design and implementation of multivariable robust control, (6) test and evaluation of system. Simulation result show that the eigen value in longitudinal is: phugoid mode = –0,061293±0,40526i and non-oscillation mode = –6,1121±4,9253. In lateral directional is:dutch roll mode = –0,91089±5,7994i, spiral mode= –0,036563, and roll subsidence mode = –12,7181. Location of poles system on the left of imaginary axis, the means that the character of system is dynamic stable. But settling time to steady state condition is very long and improved by control system design.

Key word: State space, Longitudinal, Lateral, Stable static, Stable dynamic
RAIM DALAM RANGKA MENDUKUNG IMPLEMENTASI SISTEM NAVIGASI PENERBANGAN BERBASISKAN SATELIT DI INDONESIA (RAIM IN THE IMPLEMENTATION OF SATELLITE BASED NAVIGATION IN INDONESIAN AIR TRAFFIC MANAGEMENT)
Authors: Septiawan Reza , Sutedjo Bayu , Sarotama Afrias
Published: March 2018

Receiver Autonomous Integrity Monitoring (RAIM) is a method to monitor the integrity of GPS using mesurement to redundant satellites on the receiver side. Comonly 2 algorithm are used to perform RAIM, i.e. snapshot method and sequential method. In snapshot method, single set measurement of GPS signal is used, meanwhile in sequential method several sets of measurements (past and current) GPS signal are used. Therefore, the sequential method has the capacity to detect position failure due to low fault to noise ratio. The low fault to noise ratio is mostly caused by the satellite’s position at the time of position measurement. RAIM is very useful for GPS users to be able to determine the whether the GPS can give accurate position, based on its satellite’s positions, satellite’s service life or error in the receivers. Such accuracy is important especially for the use in GPS navigation sistem in Air Traffic Management (ATM). The disturbance can also be caused by ionosfer condition. In order to support the use of GPS navigation system in ATM in Indonesia, Communication Navigation Surveillance-ATM (GPS CNS-ATM) team of BPPT perform simply RAIM asessment that can be informed to the flightcrew or Air Traffic Center, to be informed via Notice To Air Men (NOTAM). The GPS signal observation is done in 5 different locations in Indonesia.

Keywords: Air navigation system, GPS
PENDEKATAN BARU PEMETAAN BATHIMETRIC MENGGUNAKAN DATA PENGINDERAAN JAUH SPOT STUDI KASUS: TELUK PERIGI DAN TELUK POPOH (THE NEW APPROACH TO MAPPING BATHIMETRIC USING SPOT REMOTE SENSING DATA CASE STUDY: THE BAY AND POPOH GULF)
Authors: Arief Muchlisin
Published: March 2018

Bathymetric mapping derived from remote sensing have been carried out researchers, in order to determine the depth of the shallow waters especially sallow water depth. Bathymetric relief map shows the earth/terrain depicted by contour lines is called the isobath. Usually bathymetric determination using exponential function of depth. While in this paper described a new approach to calculate the depth of seawater derived from SPOT-4 satellite data using empirical formulas functions of logarithmic or quadratic equation built through correlasi the depth map obtained from DIHIDROS (Navy) with Digital Number or the reflectance values of SPOT band-1. This experience has been tested at Perigi bay in Trenggalek district and Popoh bay in Tulung Agung district. Based on the calculations, the spread of sallow water depth on Perigi and popoh bay about 5 – 70 meters

Key words: Bathymetric, SPOT, Isobaths, Shallow water depth. correlation
PENGARUH KETEBALAN DI TENGAH TABUNG MOTOR ROKET RX 122 YANG PANJANG (THE EFFECT OF THICKNESS IN THE MIDDLE OF RX 122 LONG ROCKET MOTOR TUBE)
Authors: Ediwan NFN
Published: March 2018

In the calculation of rocket tube due to the effect of pressure and temperature, if the comparison of length and diameter is large, then the bending stress and bucking stress will occur because of the weight, shear force, and torsion of the tube. For this reason, the tube needs to be thickened on the middle part so the pressure in the middle part will be reduced but will not result a new bigger pressure. In-depth analysis of the tubes was conducted on a long tube which is 2000 mm long and having 122 mm diameter. The analysis was only regarding the effect of the pressure on the tube with same thickness and the tube with thickened middle part for the purpose of seeing the effect of thickening the middle part of the tube and how much thickness in the middle part is allowed, so the effect of bending and buckling stress can be neglected. AbstrakPada perhitungan tabung roket akibat pengaruh tekanan dan temperatur, bila perbandingan antara panjang dan diameter cukup besar, perlu memperhitungkan terjadinya tegangan bending akibat berat dan tegangan buckling akibat ketebalan. Untuk menghindari tegangan tersebut maka bagian tengah tabung harus lebih tebal agar tegangan bagian tengah berkurang, tetapi tidak menimbulkan tegangan yang lebih besar lagi. Analisis yang lebih mendalam tentang tabung dilakukan pada tabung yang cukup panjang yaitu 2000 mm dan diameter 122 mm. Analisis yang dilakukan hanya dari pengaruh tekanan saja pada tabung yang tebalnya sama dan tabung yang tengahnya dipertebal, dengan tujuan untuk melihat pengaruh penebalan bagian tengah tabung tersebut dan sampai ketebalan berapa tabung bagian tengah diizinkan sehingga akibat terjadinya bending dan buckling dapat diabaikan.
APLIKASI PERANGKAT LUNAK SISTEM AKUISISI KECEPATAN REACTION WHEEL (SOFTWARE APPLICATION OF REACTION WHEEL SPEED ACQUISITION SYSTEM)
Authors: Septanto Harry
Published: March 2018

Transfer of technology activity through reverse engineering is an effort done by developing country in order to decrease technology gap, including in satellite technology, from developed country. To perform measurement anddata acquisition in order to extract design information of a satellite component are the first step in reverse engineering process. This paper reports the result of research on the development of data acquisition software for satellite actuator called reaction wheel speed. In satellite development phase, the wheel speed acquisition system is also possible to be utilized as a testing tool for componente level verification. The wheel speed data obtained from the experiment was represented in graphic of transient response. Based on the data analysis, the developed data acquisition system was possible to be utilized to measure dynamic characteristic of the reaction wheel unit in order to extract its design information. Meanwhile, the analysis done has represented basic part of component level verification test. This fact showed that the developed acquisition system was also possible to be used as testing tool in satellite development phase.  ABSTRAKKegiatan alih teknologi melalui reverse engineering merupakan upaya yang dilakukan oleh negara berkembang dalam rangka memperkecil jarak ketimpangan dari negara maju dalam hal teknologi, termasuk teknologi satelit. Melakukan pengukuran dan akuisisi data dalam rangka mengurai informasi desain suatu komponen satelit adalah tahap pertama proses reverse engineering. Makalah ini melaporkan hasil penelitian mengenai pengembangan perangkat lunak sistem akuisisi data kecepatan wheel dari sebuah aktuator satelit yang disebut reaction wheel unit. Dalam aspek fase pengembangan satelit, sistem akuisisi data ini dapat digunakan sebagai perangkat pengujian untuk verifikasi di tingkat komponen. Data kecepatan wheel, yang diperoleh dari eksperimen yang dilakukan, ditampilkan dengan grafik respon transien. Berdasarkan analisis atas data tersebut, sistem akusisi data yang dikembangkan menjanjikan untuk digunakan dalam rangka pengukuran karakteristik dinamik reaction wheel sebagai upaya mengurai informasi desainnya. Selain itu, analisis yang telah dilakukan merepresentasikan bagian dasar dari tahap verifikasi di tingkat komponen. Hal ini menunjukkan bahwa sistem akusisi data ini menjanjikan untuk digunakan sebagai perangkat pengujian di dalam fase pengembangan satelit.
Objetos de Aprendizagem como recursos didáticos para o ensino e aprendizagem de acidez-basicidade
Authors: Oliveira Elisangela Antonieta de , Cirino Marcelo Maia
Published: March 2018

Este trabalho é parte integrante de um projeto mais amplo, desenvolvido no âmbito do PDE (Programa de Desenvolvimento Educacional do Paraná) e nossa proposta didática envolveu a participação de 17 alunos do coletivo do CEEBJA de Maringá (PR), com discussões e reflexões sobre os significados de alguns conceitos químicos, tais como pH, acidez e basicidade. No decorrer do trabalho utilizamos vários recursos didáticos, como a problematização em classe, leituras e discussão de textos, trabalhos em grupo, etc., mas o foco principal da pesquisa foi descrever a utilização e a avaliação de dois “Objetos de Aprendizagem” como ferramentas didáticas para facilitar o ensino e a aprendizagem dos conteúdos citados. Os resultados preliminares apontam para uma melhora significativa na apropriação do conhecimento científico e na elaboração de significados pelos estudantes.
Propostas de formação de professores de Química em trabalhos apresentados em edições do ENEQ
Authors: Ribeiro Marcus Eduardo Maciel , Ramos Maurivan Güntzel
Published: March 2018

Este artigo relata investigação realizada por meio da leitura de trabalhos que integram os anais dos XV e XVI Encontros Nacionais de Ensino de Química (ENEQ) sobre formação de professores de Química. O objetivo foi identificar e compreender as tendências das propostas e práticas de formação docente inicial e continuada presentes nesses trabalhos. Foram selecionados 73 trabalhos, os quais foram tratados por meio da Análise Textual Discursiva - ATD. Da análise, emergiram duas categorias principais. Os resultados mostram que maior parte dos trabalhos refere-se a pesquisas realizadas sobre/com licenciandos, identificadas como formação inicial. Também conclui-se que mais da metade das propostas de formação apresentam análises de situações ocorridas com licenciandos e/ou professores, enquanto que cerca de uma quarta parte apresentam propostas de intervenção sobre a prática dos professores numa perspectiva interacionista. Raras são as propostas na linha da formação em Comunidades de Prática.
Dimensão afetiva da docência: a influência das emoções na prática e na formação de professores de Química
Authors: Novais Robson Macedo , Fernandez Carmen
Published: March 2018

A sala de aula é um espaço marcado por afetos, sentimentos e emoções, o que confere à docência uma dimensão afetiva. Neste trabalho, realizamos um ensaio acadêmico com o objetivo de discutir alguns aspectos da dimensão afetiva da docência, com foco na influência das emoções na formação e na prática de professores de Química. Para isso, evocamos algumas contribuições das áreas da Educação, da Psicologia Educacional e do Ensino de Ciências para evidenciar a influência das emoções na prática educativa. Por fim, advogamos pela realização de investigações e reflexões sobre essa temática no campo educativo, a fim de produzir novos conhecimentos e estratégias sobre a autorregulação emocional, que possam ser incorporados nos cursos de formação de professores, bem como nas aulas de Química.
Visual outcome of congenital and developmental cataract surgery in Lumbini Eye Institute
Authors: Hirachan Anjita , Bajracharya Kabindra , KC Rai Salma , Malla Bhari Arjun , Chandra Avinash
Published: March 2018

Background: Paediatric blindness presents as an enormous problem to developing countries in terms of human morbidity, economic loss and social burden.Aims and Objective: The objective of this study was to observe the visual outcome of congenital and developmental cataract surgery.Materials and Methods: This study was prospective, longitudinal and interventional. The patients aged ≤15 years, diagnosed either congenital or developmental cataract and planned for cataract surgery were enrolled during March 2014 to February 2015 at Lumbini Eye Institute, Nepal. The patients underwent either: a) Lens aspiration + PPC+ Anterior Vitrectomy; b) Lens aspiration + PPC+ Anterior Vitrectomy + PCIOL; c) Lens Aspiration + PCIOL depending upon age of patient. The patients were examined after surgery day 1, day 2, after 2 weeks and after 6 weeks. Glasses were prescribed at 6 weeks from the date of surgery. Occlusion therapy was initiated in cases wherever necessary.Results: A total of 54 eyes of 43 children were included in the study. The sex ratio was 1.26 female per male with mean age of 3 years (SD ± 2.16). In the verbal group, 61.1% (33 eyes) had final visual acuity (6/6-6/18). In the non verbal group, 16.7% (9 eyes) had final visual acuity of good fixation and follow. There was a statistically highly significant improvement in post surgical Best corrected visual acuity (p< 0.001).Conclusion: Good visual outcome after pediatric cataract surgery can be obtained if surgery is performed by skilled surgeon. The awareness of pediatric cataract, early diagnosis and timely intervention to surgical treatment, and postoperative management of residual uncorrected refractive error and amblyopia are important factors for the prevention of childhood blindness from cataract.Asian Journal of Medical Sciences Vol.9(2) 2018 36-39
Wet purpura in Dengue fever
Authors: Manappallil Robin George , Yelisetti Mounika
Published: March 2018

Dengue fever is an acute febrile viral illness associated with severe headache, myalgia, arthralgia, rashes, leucopenia and thrombocytopenia. These patients can present with haemorrhagic manifestations. Wet purpura in oral mucosa occurs when there is a drastic fall in platelet counts; and can be taken as a sign of impending systemic haemorrhage. This is the case of a young male who was diagnosed to have Dengue fever. He developed severe thrombocytopenia and wet purpura, following which he had gastrointestinal bleed. Dengue fever presenting with wet purpura is a rare scenario.Asian Journal of Medical Sciences Vol.9(2) 2018 43-44
Minimally invasive endoscopic repair of refractory lateral skull base cerebrospinal fluid rhinorrhea: case report and review of the literature
Authors: Lucke-Wold Brandon , Brown Erik C. , Cetas Justin S. , Dogan Aclan , Gupta Sachin , Hullar Timothy E. , Smith Timothy L. , Ciporen Jeremy N.
Published: March 2018

Cerebrospinal fluid (CSF) leaks occur in approximately 10% of patients undergoing a translabyrinthine, retrosigmoid, or middle fossa approach for vestibular schwannoma resection. Cerebrospinal fluid rhinorrhea also results from trauma, neoplasms, and congenital defects. A high degree of difficulty in repair sometimes requires repetitive microsurgical revisions—a rate of 10% of cases is often cited. This can not only lead to morbidity but is also costly and burdensome to the health care system. In this case-based theoretical analysis, the authors summarize the literature regarding endoscopic endonasal techniques to obliterate the eustachian tube (ET) as well as compare endoscopic endonasal versus open approaches for repair. Given the results of their analysis, they recommend endoscopic endonasal ET obliteration (EEETO) as a first- or second-line technique for the repair of CSF rhinorrhea from a lateral skull base source refractory to spontaneous healing and CSF diversion. They present a case in which EEETO resolved refractory CSF rhinorrhea over a 10-month follow-up after CSF diversions, wound reexploration, revised packing of the ET via a lateral microscopic translabyrinthine approach, and the use of a vascularized flap had failed. They further summarize the literature regarding studies that describe various iterations of EEETO. By its minimally invasive nature, EEETO imposes less morbidity as well as less risk to the patient. It can be readily implemented into algorithms once CSF diversion (for example, lumbar drain) has failed, prior to considering open surgery for repair. Additional studies are warranted to further demonstrate the outcome and cost-saving benefits of EEETO as the data until now have been largely empirical yet very hopeful. The summaries and technical notes described in this paper may serve as a resource for those skull base teams faced with similar challenging and otherwise refractory CSF leaks from a lateral skull base source.
Registration of FC1740 and FC1741 Multigerm, Rhizomania‐Resistant Sugar Beet Germplasm with Resistance to Multiple Diseases
Authors: Panella Lee , Fenwick Ann L. , Stevanato Piergiorgio , Eujayl Imad , Strausbaugh Carl A. , Richardson Kelley L. , Wintermantel William M. , Lewellen R. T.
Published: March 2018

FC1740 (Reg No. GP‐293, PI 681717) and FC1741 (Reg No. GP‐294, PI 681718) sugar beet germplasm (Beta vulgaris L.) were developed by the USDA‐ARS at Fort Collins, CO, Salinas, CA, and Kimberly, ID, in cooperation with the Beet Sugar Development Foundation, Denver, CO. These germplasm are diploid, multigerm sugar beet populations in normal cytoplasm, segregating for self‐sterility (Sf:SsSs), genetic male sterility (A:aa), and hypocotyl color (R:rr). FC1740 and FC1741 have excellent resistance to rhizomania (Beet necrotic yellow vein virus). FC1740 was selected as homozygous resistant to markers linked to both Rz1 and Rz2 genes for rhizomania resistance. FC1741 was selected as homozygous to the marker linked to the Rz2 gene for resistance. Both germplasm also have resistance to beet curly top (Beet curly top virus) and Fusarium yellows (Fusarium oxysporum Schlechtend.:Fr. f. sp. betae (D. Stewart) W. C. Snyder & H. N. Hans. and other Fusarium spp.), as well as moderate resistance to Aphanomyces root rot (Aphanomyces cochlioides Drechs.). Neither line exhibited resistance to Cercospora leaf spot (Cercospora beticola Sacc.), Rhizoctonia crown and root rot (Rhizoctonia solani Kuhn.) or sugar beet root aphid (Pemphigus spp.). These germplasm provide sources from which to select disease‐resistant, multigerm pollinator parents with either or both of the Rz1 and Rz2 sources of rhizomania resistance. Because they are from the same population, they also are useful as controls of known genetic background in comparing entries screened for rhizomania resistance conditioned by Rz1 or Rz2.