bluuebunny/crossref_metadata_2025 huggingface dataset:
Numerical Simulation of Frost Heave of Concrete Lining Trapezoidal Channel Under an Open System
Authors: Mo Tengfei , Lou Zongke
Published: January 2020

To study the distribution law of frost heave in base soil with a concrete lining structure and compound geomembrane, the coupled heat–moisture–stress, capillary action, and membrane water migration were considered, and multi-field coupling software was used to simulate the frost heaving of the channel. A 67-day frost heaving process of the foundation soil considering the change of groundwater level around a channel was also considered. The displacement fields at different positions on the base soil were obtained. The results showed that the frost heave was the largest at about one-third of the slope from the bottom of the channel, and the maximum is 8.243 cm. A compound geomembrane on the lower side of the lining can reduce the frost heaving of the foundation soil to some extent, and the maximum normal displacements of the lining along the slope and at the top of the channel decreased by 14.3% and 15.5% after adding the compound geomembrane.
Viscosity Controls Rapid Infiltration and Drainage, Not the Macropores
Authors: Germann Peter
Published: January 2020

The paper argues that universal approaches to infiltration and drainage in permeable media pivoting around capillarity and leading to dual porosity, non-equilibrium, or preferential flow need to be replaced by a dual process approach. One process has to account for relatively fast infiltration and drainage based on Newton’s viscous shear flow, while the other one draws from capillarity and is responsible for storage and relatively slow redistribution of soil water. Already in the second half of the 19th Century were two separate processes postulated, however, Buckingham’s and Richards’ apparent universal capillarity-based approaches to the flow and storage of water in soils dominated. The paper introduces the basics of Newton’s shear flow in permeable media. It then presents experimental applications, and explores the relationships of Newton’s shear flow with Darcy’s law, Forchheimer’s and Richards’ equations, and finally extends to the transport of solutes and particles.
Monthly Flow Duration Curve Model for Ungauged River Basins
Authors: Burgan Halil Ibrahim , Aksoy Hafzullah
Published: January 2020

Flow duration curve (FDC) is widely used in hydrology to assess streamflow in a river basin. In this study, a simple FDC model is developed for monthly streamflow data. The model consists of several steps including the nondimensionalization and then normalization in case the monthly streamflow data do not fit the normal probability distribution function. The normalized quantiles are calculated after which a back transformation is applied to the normalized quantiles to return back to the original dimensional streamflow data. In order to calculate annual streamflow of the river basin, an empirical regression equation is proposed using the drainage area and the annual total precipitation only as the input. As the final step of the model, dimensional quantiles of FDC are calculated. Ceyhan River basin in southern Turkey is chosen for the case study. Forty-two streamflow gauging stations are considered; two thirds of the gauging stations are used for the model calibration, and one third for validation. The modeled FDCs are compared to the observation and assessed with a number of performance metrics. They are found similar to the observed ones with a relatively good performance; they are good in the mid and high flow parts particularly while the low flow part of FDCs might require further detailed analysis.
Why Do People Remain Attached to Unsafe Drinking Water Options? Quantitative Evidence from Southwestern Bangladesh
Authors: Naus Floris Loys , Burer Kennard , van Laerhoven Frank , Griffioen Jasper , Ahmed Kazi Matin , Schot Paul
Published: January 2020

The acceptance of newly implemented, safe drinking water options is not guaranteed. In the Khulna and Satkhira districts, Bangladesh, pond water is pathogen-contaminated, while groundwater from shallow tubewells may be arsenic- or saline-contaminated. This study aims to determine why, as well as the extent to which, people are expected to remain attached to using these unsafe water options, compared to the following four safer drinking water options: deep tubewells, pond sand filters, vendor water, and rainwater harvesting. Through 262 surveys, this study explores whether five explanatory factors (risk, attitude, norms, reliability, and habit) pose barriers to switching from unsafe to safe drinking water options or whether they could act as facilitators of such a switch. Users’ attachment to using pond water is generally low (facilitators: risk and attitude. Barrier: norms). Users are more attached to shallow tubewells (no facilitators. Barriers: reliability and habit). The safe alternatives (deep tubewell, rain water harvesting, pond sand filter, and vendor water) score significantly better than pond water and are estimated to have the potential to be adopted by pond water users. Deep tubewell, rain water harvesting, and pond sand filter also score better than shallow tubewells and could also have the potential to replace them. These findings may be used to optimise implementation strategies for safer drinking water alternatives.
Managing Water Quality in Premise Plumbing: Subject Matter Experts’ Perspectives and a Systematic Review of Guidance Documents
Authors: Singh Rajveer , Hamilton Kerry A. , Rasheduzzaman Md , Yang Zhao , Kar Saurajyoti , Fasnacht Angelita , Masters Sheldon V. , Gurian Patrick L.
Published: January 2020

Although many guidance documents have been developed to inform the design and operation of building water systems to ensure safe water quality, there is a lack of consensus on some topics. This study interviewed 22 subject matter experts (SMEs) to identify topics of concern for managing water quality in buildings and compared SME views with information available on these topics in 15 systematically screened important guidance documents. The study found 18 design and 11 operational topics as critical for managing water quality in buildings. No one guidance document addressed all these topics, suggesting that a compendium of available guidance is needed. SMEs most frequently recommended temperature and residual disinfectant measurements as good parameters for monitoring overall building water quality. Both SME and guidance document recommendations for temperature for controlling opportunistic pathogen growth were reasonably consistent with water heater setpoint >60 °C. However, hot water temperature recommendations varied between 50 and 55 °C for other locations (i.e., the water temperature at the tap or end of the return loop). On the contrary, recommendations for disinfectant residual levels (0.2–2.0 mg/L), flushing frequency (1–14 days), and allowable time for hot water to reach the tap (10–60 s) were not consistent. While this study was able to reconcile diverging views on some of the water quality topics, such as identifying common guidance for water heater set point to at least 60 °C, it also highlights lack of definitive guidance on other critical topics, such as residual level, flushing frequency, hot water time to tap, and the use of thermostatic mixing valves, indicating that these are significant knowledge gaps that need further investigation. The study concludes that there is a need for developing evidence-based guidance, particularly on the topics where expert opinions diverged.
V2B/V2G on Energy Cost and Battery Degradation under Different Driving Scenarios, Peak Shaving, and Frequency Regulations
Authors: Tchagang Alain , Yoo Yeong
Published: January 2020

The energy stored in electric vehicles (EVs) would be made available to commercial buildings to actively manage energy consumption and costs in the near future. These concepts known as vehicle-to-building (V2B) and vehicle-to-grid (V2G) technologies have the potential to provide storage capacity to benefit both EV and building owners respectively, by reducing some of the high cost of EVs, buildings’ energy cost, and providing reliable emergency backup services. In this study, we considered a vehicle-to-buildings/grid (V2B/V2G) system simultaneously for peak shaving and frequency regulation via a combined multi-objective optimization strategy which captures battery state of charge (SoC), EV battery degradation, EV driving scenarios, and operational constraints. Under these assumptions, we showed that the electricity usage/bill can be reduced by a difference of 0.1 on a scale of 0 to 1 (with 1 the normalized original electricity cost), and that EV batteries can also achieve superior economic benefits under controlled SoC limits (e.g., when kept between the SoC range of SoCmin > 30% and SoCmax < 90%) and subjected to very restricted charge-discharge battery cycling.
The Possibility of Changing the Wettability of Material Surface by Adjusting Gravity
Authors: Liu Yong-Ming , Wu Zi-Qing , Bao Sheng , Guo Wei-Hong , Li Da-Wei , He Jin , Zeng Xiang-Bin , Huang Lin-Jun , Lu Qin-Qin , Guo Yun-Zhu , Chen Rui-Qing , Ye Ya-Jing , Zhang Chen-Yan , Deng Xu-Dong , Yin Da-Chuan
Published: January 2020

The contact angle, as a vital measured parameter of wettability of material surface, has long been in dispute whether it is affected by gravity. Herein, we measured the advancing and receding contact angles on extremely low contact angle hysteresis surfaces under different gravities (1-8G) and found that both of them decrease with the increase of the gravity. The underlying mechanism is revealed to be the contact angle hysteresis and the deformation of the liquid-vapor interface away from the solid surface caused by gradient distribution of the hydrostatic pressure. The real contact angle is not affected by gravity and cannot measured by an optical method. The measured apparent contact angles are angles of inclination of the liquid-vapor interface away from the solid surface. Furthermore, a new equation is proposed based on the balance of forces acting on the three-phase contact region, which quantitatively reveals the relation of the apparent contact angle with the interfacial tensions and gravity. This finding can provide new horizons for solving the debate on whether gravity affects the contact angle and may be useful for the accurate measurement of the contact angle and the development of a new contact angle measurement system.
Confluencia de dos tendencias
Authors: Cárdenas Zardoni Horacio
Published: January 2020

El acceso a las bases de datos de información académica como parte de la formación profesional, es una tendencia mundial que en los últimos años ha tenido un fuerte impacto en la oferta de servicios del subsistema de educación superior en México. Gracias a la creación del CONRICyT, muchas instituciones educativas han logrado acceso a información científica que, por su costo de contratación, estaba fuera de su alcance. El Sistema Nacional de Bachillerato es una iniciativa gubernamental para elevar la calidad de la educación en el nivel medio superior en el país. El Artículo examina los documentos políticos, legales y administrativos que dan sustento a ambas iniciativas, buscando determinar la posibilidad de que, en el corto plazo y conjuntando ambas tendencias, el acceso a la información de las bases de datos académicas pudiera hacerse extensivo a las instituciones que ofrecen educación media superior adscritas a las universidades públicas.
México y la oportunidad de integrar sus Políticas Públicas de Información
Authors: Escobedo Romero Juan
Published: January 2020

El trabajo plantea una propuesta general que puede ser objeto de estudio y seguimiento por parte de la comunidad especializada en las Ciencias de la Información Documental, se aborda brevemente la situación que tiene México en el campo de las Políticas de Información, el argumento principal consiste en la oportunidad del aprovechamiento de todo el marco institucional, de la dinámica del acceso y la transparencia de la información pública para conforma una Política Nacional de Información.
Las Bibliotecas Mexicanas
Authors: Arellano Rodríguez J. Alberto , Mireles Cárdenas Celia
Published: January 2020

Con base en cifras oficiales y la revisión de la literatura existente se hace una breve descripción de las condiciones en que se encuentran los diferentes tipos de bibliotecas y los aspectos relacionados a los servicios bibliotecarios en México.
Entrevistas a la Dra. Jane Russell del Instituto de Investigaciones Bibliotecológicas y de la Información de la Universidad Nacional Autónoma de México (UNAM), y a la Dra. Cristina Retrepo Arango de la Pontificia Universidad Javeriana, Bogotá, Colombia
Authors: Galina Russell Isabel , Díaz Delbert Jomar
Published: January 2020

El lanzamiento oficial de la revista Cuadernos de Investigaciones de Ciencias de la Información se llevará a cabo en INFO 2016, evento en el cual también se realizará un homenaje a la Dra. Jane Russell investigadora de la Universidad Nacional Autónoma de México (UNAM) por su trayectoria en el área de estudios métricos. 
La Dra. Russell nació en Inglaterra y ahí realizó estudios de licenciatura en Fisiología y Bioquímica. Su primer empleo en el departamento de información de una empresa comercial la motivó a realizar estudios más especializados, interés que culminó en una maestría en Ciencias de la Información en la City University, Londres. A principios de la década de los setenta llegó a México y pronto se incorporó a la UNAM, donde ha trabajado más de cuarenta años y de donde próximamente se jubilará...
La estructuración de sistemas de gestión de documentos y archivos como base para la implementación de un sistema de preservación digital
Authors: Castillo Fonseca Juan Miguel
Published: January 2020

La administración pública debe reflejar sus actividades a partir de una buena organización de sus archivos para poder transparentar y dar acceso a la información contenida en los documentos que se localizan precisamente en ellos. Por tanto, podemos decir que la claridad en la información que sustenta el quehacer cotidiano y la rendición de cuentas de las instituciones públicas, debe estar sustentada en una adecuada organización de archivos, sin la que, por el contrario, la administración pública se vuelve caótica e imposible. El presente trabajo analiza la Estrategia Digital Nacional (EDN) y su relación con los sistemas de gestión de documentos y archivos, con el fin de democratizar los servicios públicos en el país. La metodología empleada en esta investigación, se basa en un método analítico de fuentes documentales y del método comparativo sobre el uso de los sistemas de gestión documental y archivos en México, a fin de proponer la formulación de un sistema de preservación digital.
Índice H de los investigadores del Sistema Nacional de Investigadores (SNI) del área de las Ciencias Sociales en México
Authors: Restrepo-Arango Cristina
Published: January 2020

Analizar la visibilidad de los investigadores del Sistema Nacional de Investigadores (SNI) en Web of Science (WoS), Scopus y Publish or Perish, mediante la búsqueda del índice h de 240 investigadores nacionales del área V de las ciencias sociales en México en Publish or Perish, Google Scholar Metrics, Web of Science y Scopus. Se encontró que los resultados muestran una gran polarización entre las 4 fuentes consultadas para obtener el índice h. La primera, Publish or Perish es la más incluyente en términos de citación, ya que se basa en las publicaciones que aparecen en el Google Académico y esto favorece enormemente los valores que obtuvieron los investigadores de las ciencias sociales mexicanas en el índice h. La segunda y tercera que son WoS y Scopus se caracterizan por una ausencia generalizada en la indización de revistas mexicanas de las ciencias sociales utilizadas por los investigadores para diseminar sus publicaciones. La cuarta, Google Scholar Metrics es una herramienta abierta y gratuita que al parecer no es usada por los investigadores de las ciencias sociales mexicanas.
Pengaruh Tomat (Solanum lycopersicum) terhadap Diameter Tubulus Seminiferus Tikus Putih (Rattus norvegicus) Galur Sprague dawley yang Diinduksi Gentamisin
Authors: Ikhtiar Fahmi
Published: January 2020

Gentamisin adalah salah satu antibiotik golongan aminoglikosida yang efektif melawan bakteri gram negatif. Gentamisin memiliki efek samping terhadap testis. Gentamisin dapat meningkatkan jumlah Reactive Oxygen Species (ROS) yaitu suatu radikal bebas yang dapat memicu stres oksidatif dalam testis. Hal ini berbahaya bagi kesuburan pria dan meningkatkan risiko infertilitas. Kadar ROS yang tinggi dapat dinetralkan menggunakan antioksidan. Salah satu antioksidan tersebut adalah likopen yang banyak terkandung didalam tomat. Tujuan penelitian ini untuk mengetahui pengaruh tomat terhadap diameter tubulus seminiferus tikus putih Rattus norvegicus yang diinduksi gentamisin. Jenis penelitian ini adalah eksperimental dengan desain post test only control group design. Penelitian menggunakan 25 ekor tikus putih yang dibagi dalam 5 kelompok dengan lima kali pengulangan. Kelompok terdiri dari kelompok K(-) yang tidak diberikan apapun, kelompok K(+) yang diberikan gentamisin 20 mg/kgBB, dan kelompok P1, P2, P3 yang diberikan gentamisin 20 mg/kgBB dan jus tomat masing-masing persentasi 25%, 50%, dan 100%. Penelitian dilakukan selama 24 hari. Berdasarkan hasil penelitian, terjadi peningkatan diameter tubulus seminiferus setelah diberikan jus tomat selama 24 hari.
РОЗВИТОК СОЦІАЛЬНОГО ІНТЕЛЕКТУ У СТУДЕНТІВ – МАЙБУТНІХ ПЕДАГОГІВ
Authors: Слободянюк Ольга , Радчук Галина
Published: January 2020

В статті висвітлено проблему становлення соціального інтелекту у майбутніх педагогів. Проаналізовано теоретичні підходи до визначення сутності поняття «соціальний інтелект». Зазначено, що складність дефініції, зумовлена його дотичністю до вивчення різних соціально-психологічних властивостей особистості. Також, аналізується, що в роботах західних вчених соціальний інтелект розглядається, як здатність розуміти оточуючих, прогнозувати їх поведінку, як умова успішної адаптації до життя в суспільстві, на відмінну від вітчизняних, де дослідники тлумачать соціальний інтелект як здатність до розумових операцій, об'єктом яких є процес міжособистісної взаємодії. Обґрунтовано, що успішна професійна діяльність педагога залежить від високого рівня розвитку соціального інтелекту. Зазначено, що соціальний інтелект, будучи провідним компонентом успішності включення людини в соціальне життя суспільства, створює сприятливі передумови для саморозкриття, самореалізації і самоактуалізації особистості як професіонала. Таким чином, становлення студента як професіонала, суб'єкта діяльності супроводжується формуванням у нього вміння вирішувати міжособистісні завдання і діяти адекватно і проникливо в ситуації соціальної взаємодії. Відповідно, проведено емпіричне дослідження соціального інтелекту та здійснено аналіз результатів, які показали, що у студентів-педагогів переважає середній і нижче середнього рівні розвитку соціального інтелекту.
Smartphone, QR code generator e Google Forms na ensinagem do tronco encefálico em Neuroanatomia
Authors: Soares Luciana Maria de Morais Martins , Mendes Rodrigo Farias Herculano
Published: January 2020

O objetivo deste trabalho é apresentar o relato da experiência do uso do smartphone, do QR code generator e do Google Forms no favorecimento do ensino do tronco encefálico em Neuroanatomia. Para efetivação da proposta foram seguidos os seguintes passos: seleção das imagens neuroanatômicas; edição dessas imagens de modo a sinalizar a estrutura que se desejava identificar; criação do Google Forms utilizando as imagens e a tarefa de múltipla escolha; criação e acesso ao QR code e disponibilização aos aprendentes para execução junto ao celular. Após aula expositivo-dialogada sobre tronco encefálico com auxílio de projetor multimídia, foi apresentado o QR code com a tarefa de revisão. Após o preenchimento e o envio da tarefa, geraram-se, em Excel, gráficos contendo a frequência das respostas para análise e discussão dos itens que apresentaram maior número de equívocos. As tecnologias simplificam o processo de avaliação discente e oferecem um ensino mais atrativo, moderno e dinâmico.
Ensino na graduação e prática profissional de nutricionistas supervisoras de estágio em serviços de alimentação
Authors: Silveira Joice Trindade , Wermuth Karina , Jesien Ingrid
Published: January 2020

O objetivo deste trabalho foi investigar a compatibilidade entre o ensino na graduação e a prática profissional de nutricionistas supervisoras de estágio em serviços de alimentação. O trabalho foi realizado no curso de Nutrição da Universidade Federal do Pampa com as seguintes etapas: 1) Entrevista com as nutricionistas supervisoras de estágio na área de alimentação coletiva; 2) Análise dos conteúdos presentes em sete planos de ensino relacionados à área; 3) Avaliação da compatibilidade entre o ensino e a prática. Participaram quatro nutricionistas, e foi observada uma compatibilidade parcial entre os conteúdos apresentados nos planos de ensino e as atividades profissionais relatadas. Os conteúdos que não foram citados, no entanto, são exigidos por legislações profissionais. Diferentemente da prática, a abordagem teórica dos conteúdos mostrou-se mais técnica. Sugere-se, portanto, a ampliação dessa abordagem, considerando a operacionalização dos conhecimentos como forma de aproximá-los da prática profissional.
Propuesta para el desarrollo de la lectoescritura académica colaborativa mediada por proyecto WebQuest-Wiki.
Authors: Velasco Zárate Kalinka , Meza Cano José Manuel , Blancas Moreno Elsa María
Published: January 2020

En este artículo, presentamos el diseño de un curso mixto y resultados de su implementación, donde un proyecto WebQuest-Wiki media el desarrollo de las habilidades de escritura colaborativa, en los docentes de idiomas en formación. El objetivo del diseño es promover el desarrollo de la alfabetización digital, del metadiscurso y la metacognición, a través de la tarea de escribir colaborativamente un artículo de investigación documental sobre un tema de su interés en su área académica. Las observaciones de las acciones, estrategias y procesos, junto con el cuestionario de evaluación del curso, permitieron estimar que la actividad WebQuest fue motivante y de utilidad para lectura y las habilidades digitales, seguida de la actividad Wiki, que permitió la práctica colaborativa de la escritura. Este tipo de diseño es útil para que los estudiantes realicen una tarea auténtica de investigación y lectoescritura colaborativa, que amplía sus conocimientos y disposiciones para el trabajo académico.
O que Cinderela e a Bela e a Fera têm a ver com a Geografia?
Authors: Almeida Jacqueline Praxedes , Calazans Denis Rocha
Published: January 2020

O uso de paradidáticos nas aulas de Geografia ajuda a promover a interdisciplinaridade, além de possibilitar o estímulo ao senso crítico e a ampliação dos conhecimentos. Nesse sentido, foi introduzido na disciplina de Metodologia do Ensino de Geografia, no curso de Licenciatura em Geografia, o trabalho com obras literárias, mais especificamente os contos infantis, sendo eles lidos e pensados na perspectiva do trabalho com conteúdos referentes ao 2º ano do Ensino Médio. A atividade desenvolvida teve como objetivo proporcionar aos licenciandos bases para promover a integração entre Literatura e Geografia. O desenvolvimento da atividade mostrou, dentre outros resultados, que a maioria não tinha pensado em utilizar contos infantis nas aulas de Geografia e que, após a execução da atividade, adotariam essa prática durante as aulas.
Ensino integrado em Saúde e prática interprofissional
Authors: Silva John Victor dos Santos , Santos Júnior Claudio José dos , Ribeiro Mara Cristina
Published: January 2020

O presente trabalho tem como finalidade descrever a experiência do ensino integrado em saúde nas práticas acadêmicas em uma universidade pública do estado de Alagoas. Como forma de exemplificar a estratégia utilizada por essa instituição de ensino superior para favorecer o ensino e a formação interdisciplinar, bem como as práticas interprofissionais envolvidas, o artigo apresenta um relato de experiência que aconteceu nos anos de 2017 e 2018 em disciplinas específicas ofertadas para os cursos de Enfermagem, Fisioterapia, Fonoaudiologia e Terapia Ocupacional. Essa experiência possibilitou a vivência da prática interprofissional na formação em saúde e a elaboração de planos de ação como proposta de intervenção – considerando as complexidades das comunidades visitadas –, além da construção do conhecimento de forma coletiva. Isso pôde reforçar o trabalho no campo da saúde pública, que necessita de profissionais que saibam trabalhar em equipe e interagir com as diferentes formações, especialidades e especificidades.
Metodologias ativas no ensino superior
Authors: Azevedo Sandson Barbosa , Pacheco Veruska Albuquerque , Santos Elen Alves dos
Published: January 2020

Trata-se de um estudo sobre percepção de docentes acerca das metodologias ativas no ensino superior. A pesquisa objetivou mapear a percepção de professores de uma faculdade particular sobre a utilização dessas metodologias. A pesquisa foi exploratória quantitativa, caracterizada como estudo de caso, e compreendeu o uso de questionário. A amostra é composta por 57 docentes de uma instituição privada de ensino superior localizada em Brasília. Os resultados mostram que 96% dos participantes utilizam as metodologias ativas em sua prática docente, sendo o método do estudo de caso e o team-based learning (aprendizagem baseada em equipes) as mais utilizadas pelo grupo. Evidencia-se que na percepção dos participantes, as características mais desenvolvidas nos estudantes são as relações interpessoais, a iniciativa e o aumento da criticidade. Constatou-se a consciência dos professores em relação à importância da utilização das metodologias ativas. Essa pesquisa apontou ainda a importância das IES ofertarem cursos de metodologias ativas em seus espaços, sem dispensar uma visão crítica e reflexiva de como as metodologias têm sido aplicadas.
Aprendizagem Baseada em Projetos
Authors: Cecílio Waléria Adriana Gonçalez , Tedesco Daniel Guimarães
Published: January 2020

Este artigo relata uma experiência realizada nos cursos de Engenharia da Universidade Positivo, a partir da necessidade de engajar os estudantes e desenvolver as habilidades de mais alta ordem na Taxonomia de Anderson et al. (2001). No âmbito das práticas pedagógicas, desenvolveu-se com estudantes do primeiro ano de Engenharia uma Aprendizagem Baseada em Projeto. As sequências didáticas articulam teoria e prática, privilegiando o estudo de cônicas, quádricas e suas aplicações. Especificamente utilizou-se Aprendizagem Baseada em Projeto como estratégia metodológica para tornar as aulas mais interativas, diminuindo a passividade dos estudantes, desenvolvendo a autonomia e o engajamento a partir de problemas reais. Os resultados da experiência demonstraram uma melhora significativa no desempenho dos estudantes nas avaliações que envolviam os temas de estudos propostos.
Investigasi Intrusi Batuan Andesit Dan Reservoar Air Tanah Permukaan Menggunakan Metode Geolistrik Di Daerah Lansot Kema Minahasa Utara
Authors: Pani Sutaryono , Tamuntuan Gerald Hendrik , As'ari As'ari
Published: January 2020

Telah dilakukan penelitian untuk menginvestigasi batuan andesit dan akuifer air tanah di Daerah Lansot Kecamatan Kema Kabupaten Minahasa Utara dengan menggunakan metode geolistrik konfigurasi dipol-dipol. Penelitian ini menggunakan panjang bentangan 480 m dan spasi antar elektroda 10 m dengan 48 elektroda. Data yang diperoleh kemudian diolah menggunakan software Res2dinv untuk mendapatkan gambaran struktur bawah permukaan secara 2D. Berdasarkan model 2D, batuan andesit dengan nilai resistivitas >281 Ωm terdapat pada meter ke 122 sampai dengan 205 dengan kedalaman 50 sampai dengan 71.6 meter dan mempunyai ketebalan batuan 21.6 m. Kemudian pada meter ke 280 sampai dengan 440 dengan kedalaman 20 sampai dengan 71.6 m dengan ketebalan batuan 51.6 m. Akuifer air terdapat pada tiga bagian, bagian pertama terdapat pada meter ke 30 sampai dengan 176 dengan kedalaman 5 sampai dengan 15 m. Bagian kedua terdapat pada meter ke 172 sampai dengan 225 dengan kedalaman 3 sampai dengan 33 m. Bagian ketiga terdapat pada meter ke 250 sampai dengan 270 dengan kedalaman 2 sampai dengan 85 m. Ketiga bagian akuifer air tanah tersebut mempunyai nilai resistivitas <10 ΩmThe research has been carried out to investigate andesite rocks and groundwater aquifers in the Lansot District of Kema, North Minahasa Regency using the dipole-dipole configuration geoelectric method. This study uses a 480 m length of stretch and spacing between electrodes is 10 m with 48 electrodes. The data obtained is then processed using Res2dinv software to get a picture of the subsurface structure in 2D. Based on 2D models, the  andesite rocks with resistivity values> 281 Ωm are exist at 122 m to 205 m  with depths of 50 to 71.6 m and  rock thickness  21.6 m. Then another andesite rocks exist at 280 m to 440 m with a depth of 20 m to 71.6 m and rock thickness of 51.6 m. Water aquifers are existed in three segments, the first is in 30 m to 176 m with a depth of 5 m to 15 m. In the second segment, groundwater aquifers are found of 172 m to 225 m with depths of 3 m to 33 m. In the third segments,  groundwater aquifers are found of 250 m to 270 m with a depth of 2 m to 85 m. Those three water aquifer segments has a resistivity value <10 Ωm
Pembuatan Algoritma Identifikasi Objek Menggunakan Indikator Kuantatif Dengan Memanfaatkan Penerapan Analogi Titik Dalam Ruang Berdimensi-n
Authors: Rongre Eliezer Mangoting
Published: January 2020

Suatu algoritma telah dibuat untuk mengidentifikasi objek berdasarkan nilai indikator kuantitatif .  Sekumpulan nama objek yang terkait dengan nilai indikator tertentu disimpan sebagai acuan untuk mengidentifikasi objek yang indikatornya diinput ke komputer  Algoritma akan  memproses data indikator  untuk menghasilkan keluaran objek terindidentifikasi. Nama nama objek disimpan berurut dan terkait dengan   nilai indikatornya.   Suatu analogi dengan  tiktik dalam ruang berdimensi n dimanfaatkan dan ditempatkan  dalam suatu system koordinat berdimensi n.Titik dianggap mewakili objek, dan komponennya pada sumbu koordinat mewakili  inidkator. Setiap sumbu koordinat mewakili suatu jenis indikator. Titik dalam ruang dan komponen pada sumbu koordinat yang tersebar secara kontinyu ditransformasi menjadi  menjadi bentuk dengan  sumbu koordinat berbasis  indeks array nilai indikator. Selanjutnya objek dianggap sebagai elemen dari suatu array berdimensi n,  dan terkait dengan indek indeks array indikator. Objek akan diakses menggunakan indeks array  yang  merupakan bilangan penghitung siklus pembandingan indikator yang diinput dengan indikator acuan. Pengujian algoritma memberikan hasil sukses.  Disimpulkan bahwa algoritma yang berlandaskan analogi titik dalam ruang berdimensi n dapat digunakan untuk merngidentifikasi objek , dan diakses melalui indeks array.An algorithm has been built for identifying object based on its quantitative indicators. A set of object’s name related to certain incators value si stored as standard for identifyaing objects that its indicators is entered to the computer. Algorithm will do processing of the indicator data aims to result an output of indetified object.Objects’s name  are stored orderly and related to its indicators. An analogy to points in n-dimensional is utilized and placed in a n-dimensional coordinate system. The points are assumed to represent objects, and its components represents indicators. Each coornate axe represent one kind of indicator. The points in space  and components  those are distributed continuously, are transformed to form of array indeks based. Then objects are assumed as elements of n-dimensional array  and related to array indeks of indicators. Objects are accessed using array index that stand as counter of  comparation siklus of entered indicator to standard indicator. Terting of algorithm yield success result. It is cocluded that algorithm based on analogy to points in n- dimensional space ca be used for identifying object, and be accessed using array index
Pemanfaatan Tepung Biji Pepaya (Carica papaya) Terhadap Respons Pertumbuhan dan Tingkat Kelangsungan Hidup Ikan Nila (Oreochromis niloticus)
Authors: Tomasoa Aprelia Martina , Azhari Deidy
Published: January 2020

Laju pertumbuhan dan tingkat reproduksi yang tinggi merupakan karakteristik unggul yang dimiliki ikan nila sebagai komoditi budidaya. Tingkat reproduksi yang tinggi menyebabkan terjadinya pematangan gonad sebelum mencapai ukuran produksi dimana hal tersebut dapat merugikan pembudidaya, karena saat ikan mengalami matang gonad energi hasil asimilasi pakan sebagain besar akan dialokasikan untuk perkembangan gonad dan menghambat pertumbuhan somatik. Pemanfaatan senyawa aktif dari bahan alami biji pepaya dapat menjadi solusi untuk meningkatkan pertumbuhan ikan yang dibudidayakan sekaligus menjaga keamanan pangan dan konsumen. Penelitian ini bertujuan untuk mengetahui pemanfaatan tepung biji pepaya terhadap respons pertumbuhan dan tingkat kelangsungan hidup ikan nila. Ikan nila diberi perlakuan dengan lima dosis tepung biji pepaya berbeda (0, 1, 3, 5 dan 7 g/kg pakan) secara oral berdasarkan feeding rate 5% dengan tiga ulangan selama 30 hari pemeliharaan. Hasil penelitian menunjukkan dosis 5 g/kg meningkatkan pertumbuhan bobot tubuh tertinggi sebesar 547 g dibandingkan kontrol sebesar 406 g. Sejalan dengan pertumbuhan bobot tubuh, dosis 5 g/kg menghasilkan tingkat kelangsungan hidup ikan nila sebesar 100% dibandingkan kontrol sebesar 66%. Dari hasil yang diperoleh dapat disimpulkan bahwa tepung biji pepaya dengan dosis 5 g/kg pakan dapat meningkatkan pertumbuhan dan tingkat kelangsungan hidup ikan nila selama 30 hariHigh growth rate and high reproductive cycle are some economical triats on nile tilapia. This is a setback for nile tilapia culture because when the fish reach gonad maturity before reach market size, all the energy demand will flow to reproduction and can cause stunt growth. The utilization of natural compound from papaya seeds can be a solution to enhance growth of farmed nile tilapia and for consumer and food safety. This research aim to know how papaya seed powder can enhance growth and survival rate of nile tilapia. This research conducted into five groups of 5 papaya seeds powder dosage (0, 1, 3, 5 and 7 g/kg) that feed orally to the treatment fishes. Result showed the fishes feed with 5 g/kg papaya seed experienced highest growth performance 547 g compare to control which is 406 g. Same as growth performance, survival rate shown that group feed with 5 g/kg papaya seed had 100% survival rate compare with control which is 66% during treatment periods. Base on this result, we can make conclusion that fish feed with 5 g/kg of papaya seed have a better growth performance and survival rate compare with control group for 30 days treatment periods
Pemodelan Penggunaaan Energi Turbin Angin Untuk Daerah Manado
Authors: Wauran Alfrets Septy
Published: January 2020

Salah satu renewable energy yang berkembang terutama di Indonesia saat ini adalah turbin angin. Penelitian ini bertujuan membuat suatu pemodelan dan simulasi dari suatu tipe wind turbine dengan menggunakan data real dan kontinyu dari kecepatan angin yang ada di daerah Manado. Dengan hasil yang dibuat maka dapat diprediksi berapa besar daya yang dapat dihasilkan oleh wind turbine tersebut jika diguanakan di daerah Manado. Dengan demikian dapat dilakukan analisa selanjutnya untuk penerapan renewable energy ini dikalkulasi dengan jumlah daya yang diperlukan oleh masyarakat sehingga penggunaannya sangatlah efektif dan efisien. Pemodelan dan simulasi yang akan dilakukan berupa phisycal dan statistical model dengan menggunakan data kecepatan angin dari NASA selama 1 tahun. Software yang akan digunakan untuk pemodelan dan simulasi tersebut adalah Matlab yang dapat menggabungkan input data yang kontinyu dengan physical model. Adapun pembuatan model dan simulasi ini akan dilakukan melalui tahapan-tahapan sebagai berikut: tahapan perancangan sistem yang mencakup perangkat lunak, tahapan pembuatan model yang mencakup pembuatan perangkat lunak, tahapan pengujian sistem yang mencakup pengujian model, perangkat lunak serta simulasi sistem dengan menggunakan data kecepatan anginOne renewable energy that is developing especially in Indonesia today is wind turbines .This study aims to make a modeling and simulation of a type of wind turbine using real and continuous data from wind speeds in the Manado area. With the results made, it can be predicted how much power can be produced by the wind turbine if used in the Manado area. Thus, further analysis can be done for the application of renewable energy, which is calculated by the amount of power needed by the community so that its use is very effective and efficient. Modeling and simulation will be carried out in the form of physical and statistical models using wind speed data from NASA for 1 year. The software that will be used for modeling and simulation is Matlab which can combine continuous input data with physical models. The modeling and simulation will be carried out through the stages as follows: the stage of system design that includes software, the stage of making models that include software creation, the stage of system testing which includes testing of models, software and system simulations using wind speed data
Analisis Pengaruh Buangan Organik Limbah Cair Rumah Sakit Umum Pancaran Kasih Manado Terhadap Lingkungan Perairan
Authors: Tampang Benyamin Limbong
Published: January 2020

Masalah pencemaran bahan organik naik pesat sejak berkembangnya metode sintesis zat-zat organik dan dengan dipergunakannya berbagai zat organik untuk industri, obat-obatan, pertanian, makanan dan lain-lain. Penelitian bertujuan untuk menganalisis: (1) Buangan organik  limbah cair rumah sakit di lingkungan perairan. (2) Persepsi masyarakat tentang buangan organik limbah cair rumah sakit di lingkungan perairan. (3) Pengaruh keberadaan rumah sakit terhadap kondisi sosial ekonomi masyarakat sekitar. Berdasarkan hasil penelitian dapat disimpulkan bahwa: (1) Buangan organik limbah cair Rumah Sakit Umum Pancaran Kasih Manado di lingkungan perairan mempunyai nilai kekeruhan yang masih rendah, sementara nilai BOD, COD, koliform, dan E. coli sudah masuk kategori sedang. Untuk itu disarankan supaya: Pengelolaan limbah cair rumah sakit perlu didukung oleh instansi terkait dengan sarana dan prasarana yang sesuai dengan kondisi rumah sakit, termasuk penegakan peraturan dan penyuluhan untuk meningkatkan kesadaran akan lingkungan yang bersih, aman, dan nyaman, dengan prinsip: “Lingkungan Rumah Sakit Tempat Penyembuhan Penyakit, bukan Tempat Penyebaran Penyakit”The problem of pollution of organic matter has risen rapidly since the development of methods for synthesis of organic substances and by the use of various organic substances for industry, medicine, agriculture, food and others. The study aims to analyze: (1) Organic waste from hospital wastewater in aquatic environments. (2) Public perception of hospital liquid waste discharges in the aquatic environment. (3) The effect of the existence of the hospital on the socio-economic conditions of the surrounding community. Based on the results of the study it can be concluded that: (1) Organic wastewater from the Pancaran Kasih General Hospital Manado in the aquatic environment has a low turbidity value, while the BOD, COD, coliform, and E. coli values are in the medium category. For this reason, it is suggested that: Hospital wastewater management needs to be supported by agencies related to facilities and infrastructure that are in accordance with hospital conditions, including enforcement of regulations and counseling to increase awareness of a clean, safe and comfortable environment, with the principle: "Home Environment Pain, a place to heal disease, not a place for spreading disease
Survei Populasi Nyamuk dalam Kandang Babi di Kelurahan Walian Kota Tomohon Sulawesi Utara
Authors: Podung Albert J.
Published: January 2020

Nyamuk adalah salah satu jenis ektoparasit yang sering dijumpai dan dapat menyebabkan kerusakan kulit, penurunan produktivitas, dan penularan media penyakit. Studi nyamuk di kandang babi Kota Tomohon dilakukan dengan tujuan untuk menentukan keragaman dan kepadatan populasi dan waktu aktivitas nyamuk (Culicidae) di kandang babi. Metode pengamatan dalam penelitian ini yaitu mengumpulkan nyamuk setiap 2 (dua) jam dengan menggunakan Light Trap yang ditempatkan di setiap kandang mulai pukul 18.00-06.00. Hasil penelitian menunjukkan bahwa keanekaragaman nyamuk ditemukan dalam 3 genera, yaitu Culex, Anopheles, dan Armigeres. Kepadatan populasi nyamuk berhasil tertangkap 546 individu nyamuk yang terdiri dari Culex 356, Anopheles 182, dan Armigeres 8. Penelitian ini juga mendapatkan bahwa Culex memiliki kelimpahan genus nyamuk tertinggi. Ditemukan bahwa kelimpahan tertinggi 225 (63%) dari Culex pada jam 22.00-24.00. Waktu aktivitas nyamuk tertinggi diperoleh dari data jumlah tangkapan nyamuk terbanyakMosquitoes are one type of ectoparasites that are often encountered and can cause skin damage, decreased productivity, and transmission of disease media. The study of mosquitoes in the pig barns of Tomohon City was carried out with the aim to determine the diversity and population density and the time of mosquito activity (Culicidae) in the pig barns.  The observation method by collecting mosquito   every 2 (two) hours at the Light Trap placed in each cage starting at 18.00-06.00 is used in this study. The results of the study showed that the mosquitoe diversity were found in 3 genera, namely Culex, Anopheles, and Armigeres. The population density of mosquito barn was found 546 individuals of mosquitoes consisting of Culex 356, Anopheles 182, and Armigeres 8.  This research also indicates that Culex have highest abundance of mosquitoes genera.  It was found that the highest abundance 225 (63%) of Culex at 22.00-24.00. The highest activity time of mosquitoes obtained from the data of the highest number of mosquito catches
Seleksi Aktivitas Antibakteri dari Beberapa Gorgonia dari Perairan Manado Terhadap Bakteri Staphylococcus aureus, Escherichia coli, dan Edwarsiella tarda
Authors: Kandou Febby Ester Fany , Maabuat Pience Veralyn , Katili Deidy Yulius
Published: January 2020

Telah dilakukan penelitian dengan tujuan menguji aktivitas antibakteri dari beberapa Gorgonia yang berasal dari Perairan Pulau Bunaken Manado. Tahapan penelitian yaitu pengambilan sampel gorgonia pada lokasi Perairan Bunaken Manado dengan metode purposive sampling, identifikasi, ekstraksi dengan metode maserasi, peremajaan bakteri uji dengan metode goresan, pembuatan larutan Mc. Farland, pengujian aktivitas antibakteri dengan metode Kirby-Bauer. Bakteri uji yang digunakan adalah Staphylococcus aureus, Escherichia coli, dan Edwarsiella tarda. Hasil penelitian dari ke 9 sampel Gorgonia teridentifikasi 7 sampel Gorgonia yaitu Annella sp, Melithaea sp, Astrogorgia sp, Mopsella sp *cf, Siphonogorgia geodeffry *cf,  Gorgonia sp, dan Iciligorgia sp *cf serta 2 sampel yang belum teridentifikasi. Pengujian antibakteri didapatkan untuk bakteri uji Staphylococcus aureus, ada 4 sampel yang memiliki zona hambat dengan kategori sedang, 1 sampel dengan kategori kuat dan 4 sampel tidak memiliki zona hambat tetapi memiliki zona halo. Bakteri uji Escherichia coli, ada 5 sampel memiliki zona hambat dengan kategori sedang, 1 sampel dengan kategori kuat dan 3 sampel tidak memiliki zona hambat tetapi memiliki zona halo. Bakteri uji Edwarsiella tarda, ada 2 sampel memiliki zona hambat dengan kategori sedang, dan 7 sampel tidak memiliki zona hambat tetapi memiliki zona halo. Berdasarkan hasil penelitian dapat disimpulkan bahwa ke 9 sampel Gorgonian memiliki sifat bakterisida (membunuh bakteri) dan bakteriostatik (menghambat pertumbuhan bakteri)The aim of the research to examine the antibacterial activity of some Gorgonian from Bunaken Island Waters. The stages of the research are Gorgonian sampling, identification, extraction by maceration method, making Mc. Farland solution, and testing the antibacterial activity by the Kirby-Bauer method. The test bacteria used Staphylococcus aureus, Escherichia coli, and Edwarsiella tarda. The results of the nine Gorgonian samples were identified namely Annella sp, Melithaea sp, Astrogorgia sp, Mopsella sp *cf, Siphonogorgia geodeffry *cf, Gorgonia sp, and Iciligorgia sp and three unidentified samples. Antibacterial testing was obtained for the Staphylococcus aureus bacteria, there were four samples that had medium inhibitory categories, one sample with strong category and four samples did not have inhibitory zones but had a halo zone. Escherichia coli bacteria, there are five samples having inhibition zone with medium categories, one sample with strong category and three samples do not have inhibitory zone but have a halo zone. Edwarsiella tarda bacteria, there are two samples having inhibition zone with medium categories, and seven samples do not have inhibitory zone but have a halo zone. Based on the results of the study it can be concluded that the nine Gorgonian samples have bactericidal and bacteriostatic properties
Second-order surface optical nonlinear response of plasmonic tip axially excited via ultrafast vector beams
Authors: Zhang Wending , Xue Tianyang , Lu Fanfan , Zhang Lu , Meng Chao , Wang Junqiao , Mei Ting
Published: January 2020

We present the second-order surface optical nonlinear response of a plasmonic tip under axial excitation of ultrafast vector beams. Theoretical calculations show that the tip has an optimized nanofocusing characteristic under axial excitation of the radial vector beam (RVB), and the electric-field intensity enhancement factor is higher than that of linear polarization beam (LPB) and azimuthal vector beam (AVB) excitations. In the experiment, the second harmonic spectra are clearly measured under three excitation beams. The intensity of the second harmonic obtained via RVB excitation is one order of magnitude higher than that of LPB and AVB excitations.
Electron holography for vortex beams
Authors: Harada Ken , Shimada Keiko , Ono Yoshimasa A.
Published: January 2020

A combined technology of vortex beam technique and electron holography has been developed. A range about 10 times the diameter of the grating opening was irradiated and two-wave interference between a Bragg diffraction wave as a vortex beam and a transmitted wave from and around a fork-shaped grating was recorded as a hologram. Reconstruction by using the Fourier transform method was simultaneously performed for amplitude and phase distributions. Furthermore, by using a wave aberration function, the amplitude and phase distributions at various propagation positions were reconstructed numerically, resulting in the confirmation of vortex beam twists.