bluuebunny/crossref_metadata_2025 huggingface dataset:
EFEK SISA ASAM HUMAT DARI KOMPOS JERAMI PADI DAN PENGELOLAAN AIR DALAM MENGURANGI KERACUNAN BESI (FE) TANAH SAWAH BUKAAN BARU TERHADAP PRODUKSI PADI
Authors: Ruhaimah Ruhaimah , Asmar Asmar , Harianti Mimien
Published: October 2017

Fe toxicity on recent ricefield has been common problem in ricefield management to increase rice productivity. Adding organic matter like humic acid from any source (such as hay residue compost) and water management (intermitten flooding and continue flooding) can reduce Fe toxicity and it will be able to increase rice yield in one plant season.  But how about in second plant season, this research will found effect of adding humic acid from hay compost residue and water management. The objective of this research was to study the interaction of hay compost humic acid residue effect and water management  on Fe abundant and nutrient uptake and rice yield in recent ricefield.  This research has done by split-split plot design 2 x 4. The main plot which was treatment of water management were permanent flooding and intermitten (P1 and P2). And the  split plot which was  humic acid treatments were Ao = 0 ppm (0 Kg humic acid /Acre), A1= 200 ppm (400 Kg humic acid/A), A2= 400 ppm (800 Kg humic acid/A), A3 = 600 ppm (1200 Kg humic acid /A). Data analysed by statistical methode, if the treatments were significant to be continued by Duncan 05 % analysis.  The result has obtained of this research which was Eh value of soil in flooding and intermitten was decrease in every week because treatment of humic acid in first season. The content of Fe2+ in soil was increase in every week until the 8th week. Value of soil pH until 8th week flooding was increase, and caused P available and P potencial were increase too. Plant growth and yield of rice in second season not better than first season, and for intermitten flooding caused better plant growth and yield of rice.    Keyword :  Fe Toxicity, Humic Acid, water management, Recent Ricefield
PENGARUH PENGOLAHAN TANAH DAN PEMBERIAN MULSA ORGANIK TERHADAP PERUBAHAN BEBERAPA SIFAT KIMIA TANAH PSAMMENT DAN HASIL JAGUNG MANIS (Zea mays Saccharata Sturt)
Authors: Ruhaimah Ruhaimah , Herviyanti Herviyanti , Adrinal Adrinal , Oktabriana Giska
Published: October 2017

A research about effect of soil managment and organic mulch application on soil physical properties of psamment and conr production was conducted in Korong Muaro, Nagari Sunur Kecamatan Nan Sabaris Kabupaten Padang Pariaman, as well as in soil laboratory, Agriculture Faculty, Andalas University Padang.  This research was done from April – October 2009.  The objective of the research was to identify interaction effect between soil cultivation and organic mulch application on chemical properties of psamment and production of sweet corn.  This research was designed in two factors: 3 x 4 with three replications. The first factor was soil cultivation which consisted of 3 levels (Po = No-till, P1 = Minimum tillage, P2 = Conventional till).  The second factor was organic mulch application, which consisted of four levels: Z = without mulch addition, T = Titonia for 8 ton DW/ha, K = Chromolaena for 8 ton DW/ha, J = straw 8 ton DW/ha. The result showed that soil cultivation combined with rice straw mulch application could increase N, P, K elements in soil.  Soil N content increased from 0,17 % to  0,28 %, avail-P from 52,57 ppm to 88,60 ppm, and K-exch from 0,64 me/100g to 2,35 me/100g, however, minimum tillage gave the highest yield which was 7,68 ton weight  of corn seeds + the stalk /hektar, and rice straw mulch showed the highest among the organic mulch applied, which was 8,85 ton/ha.Keywords: Soil cultivation, organic mulch, psamment, sweet corn
TINJAUAN KUALITAS PUPUK ORGANIK DAN PENGAWASANNYA BAGI KEAMANAN DAN KETAHANAN PANGAN DI INDONESIA
Authors: Agustian Agustian
Published: October 2017

The use of organic fertilizers in agricultural production can not only increase soil fertility but also at the same time improve soil quality. Organic fertilizer is a unique product because it can improve physical properties, chemical, and biological soil as plant growth media. These characteristics bring the organic fertilizers into a valuable product that can be used in a variety of use. Today in Indonesia, there are so many outstanding varieties of organic fertilizer products either refined or imported products. Monitoring of the quality and feasibility of organic fertilizer materials is needed, so they will not harm the farmers as consumers. Each country develops criteria standard of organic fertilizer valuing each country's interest. United States, Canada, Australia and Europe use different compost quality criteria tailored to the needs and environmental rules that apply. So far in Indonesia rules used in determining quality is Permentan No. 02/Pert/HK.060/2/2006 which was then updated with Permentan No.28/PERMENTAN/OT.140/2/2009 on Organic Fertilizers and Soil Ameliorant. Basically, the appraisal made on the maturity and quality of organic fertilizers is based on observation of physical, chemical, and biological parameters. Review of the criteria used in the Regulation of the Minister of Agriculture was necessary in considering the criteria used which are very harmful to consumers, such as if it is satated that C-organic content is approximately 12%, which is low, it means that there might exist some follow-up materials such as glass, plastic in the fertilizer about 2%. If the rules are maintained, it will be very detrimental to Indonesia because of invasion from over seas. Import organic fertilizers would be siege to Indonesian farmers. Permentan No.28/PERMENTAN/SR.130/5/2009 has also set up institutions in charge of monitoring the quality of organic fertilizers. However, the quality control must be carried out. It is not only at the level of the end product, but it must also begin from the moment of the production process by establishing a supervisory agency competent. Since organic fertilizers can be produced by large industries, small and medium-scale farmers, the level of supervision is needed with different approaches. Keywords: organic fertilizer, quality, processes and controls
EROSI DAN KEHILANGAN HARA PADA PERTANAMAN KENTANG DENGAN BEBERAPA SISTEM GULUDAN PADA ANDISOL DI HULU DAS MERAO, KABUPATEN KERINCI, JAMBI
Authors: Henny H , Multilaksono K , Sinukaban N , Tarigan S D
Published: October 2017

This research was aimed to study alternative techniques for soil conservation in controlling erosion and nutirients lost from Andisol planted with potatoes in upper part of Merao watershed, in Kerinci Region, Jambi Province.  The research was conducted in Kebun Baru, Kayu Aro, Kerinci.  The soil and sediment samples were analysed at Soil and Land Resource Laboratory, Agriculture Faculty, Institute Pertanian Bogor.  Erosion was measured on small plots consisting of seven (7) treatments and three (3) replications considered as blocks.  The results showed that planting potatoes across the slope direction, or making soil bed across 15% slope, or soil bed as slope direction and across slope direction every 4.5 m distance could control erosion and nutrients lost, and did not affect potato yield compared to soil bed as slope direction.  Planting potatoes on soil bed as slope  and across slope direction in each 4,5 m distance (modified farmers model) reduced erosion, soil organic-C, and total-N lost for 65.89, 65.19, and 24.55%, respectively, compared to planting as slope direction.  Keywords: erosion, nutrient lost, sedimentation
PENGARUH PEMBERIAN BAHAN HUMAT DARI EKSTRAK BATUBARA MUDA (Subbituminus) DAN PUPUK P TERHADAP SIFAT KIMIA ULTISOL SERTA PRODUKSI TANAMAN JAGUNG (Zea mays L.)
Authors: Herviyanti Herviyanti , Ahmad Fachri , Sofiyani Riza , Darmawan Darmawan , Gusnidar Gusnidar , Saidi Amrizal
Published: October 2017

The purpose of this research is to study interaction of humic substances extracted from subbituminus coal with P fertilizer on the chemical properties of Ultisol and crop production of corn (Zea mays L.). The experiment was designed in completely randomized design having 2 factors (4 x 4) with 3 replications. The first factor was dose of humic substances (A) which consists of 4 levels (A1 = 0 ppm, A2 = 400 ppm, A3 = 800 ppm, and A4 = 1200 ppm). The second factor was level of fertilizer P (B) (B1 = 100% recommendation, B2 = 75% recommendation, B3 = 50% recommendation, and B4 = 25%). The result showed that : 1) There is no interaction between humic substances and P fertilizer on the chemical nature of Ultisol and crop production of corn (Zea mays L.) 2) Use of humic substance for 800 ppm with some level of P fertilizer could improve some chemical properties of Ultisol such as decreased in content of Al-exch by 0,38 me/100 g soil, increased in P-available by 22,16 ppm, CEC by 8,42 me/100 g soil and P nutrient by 0,10 %, as well as corn yield by 25,67 g/pot compared to soil without humic substances 3) The use of SP-36 for 50 % with some level of humic substances increased in plant height by 26,58 cm, P nutrient by 0,11 %, and the use of 75 % SP-36 increased corn yield by 5,84 g/pot compared to 25% of P recommended.Keywords : humic subtances, subbituminus coal, P fertilizer.
Job satisfaction of Chilean workers. A model of structural equations
Authors: Chiang Vega Maria Margarita , Gómez Fuetealba Nelly Margot , Hidalgo Ortiz Juan Pablo
Published: October 2017

Job satisfaction as a psychosocial phenomenon is associated with a set of attitudes that have an important role in the accomplishment of objectives by organizations in general. In addition, the modernization of managerial practices and the professionalization of both public management and administration, implies the necessity of knowing the attitudes related to work that have a greater influence on workers' job satisfaction. This research seeks to characterize the employees of Chilean public institutions regarding their job satisfaction and six different attitudes that make up this construct. The sample comprised 216 Chilean employees, who answered a survey which had six scales and a reliability coefficient of about 0.8, which defines a valid internal consistency scale. By applying models of structural equations, through a confirmatory factorial analysis, the relationship between the different dimensions that explain the the workers' job satisfaction is studied. Finally, the results reveal that the model of first level structural equations, after a final adjustment, selects four of the six original dimensions, which are: job satisfaction as a whole, satisfaction with the way the work is done, satisfaction with development opportunities and satisfaction with the relationship between the employer and the employee. These dimensions produce positive effects on the overall job satisfaction construct, being “satisfaction with the relationship between the employer and the employee” the best one, as reflected by its indicators, which for this sample correspond to the employer's supervision satisfaction and the proximity and frequency with which they are supervised.
Design and Development Website of Research Institute, Case Study: Universitas Negeri Makassar
Authors: Ahmar Ansari Saleh , Rusli Rusli , Ihsan Nasrul
Published: October 2017

Abstract: The aim of this paper was to develop a website of research institue at Universitas Negeri Makassar, that can be accessed by many people to check information about reseach anytime and anywhere without the limit of time and location so that the disclosure of information research can be done. The method used in this research is the Software Development Life Cycle method with the three stages namely Initiation Phase, Development/Acquisition Phase, and Implementation Phase. The development of this information system using PHP and CodeIgniter as a its framework. This system development using PHP programming language and CodeIgniter Framework with MySQL database.

Abstrak: Tujuan dari tulisan ini adalah dikembangkannya suatu Website Lembaga Penelitian di Universitas Negeri Makassar yang dapat diakses oleh berbagai pihak yang terkait dengan penelitian kapan saja dan dimana saja tanpa adanya batasan waktu dan lokasi sehingga keterbukaan informasi penelitian dapat terlaksana. Metode yang digunakan pada tulisan ini yaitu Metode Software Development Life Cycle dengan tiga tahapan yaitu fase awal, fase pengembangan, dan fase implementasi. Pengembangan sistem informasi ini menggunakan bahasa pemrograman PHP berbasis pada Framework CodeIgniter dengan basis data MySQL.

Keywords: CodeIgniter, Information Systems, Website, Research Insitute, Universitas Negeri Makassar
Atomistic potential for graphene and other sp2 carbon systems
Authors: Fthenakis Zacharias G. , Kalosakas George , Chatzidakis Georgios D. , Galiotis Costas , Papagelis Konstantinos , Lathiotakis Nektarios
Published: October 2017

We introduce a torsional force field for sp2 carbon to augment an in-plane atomistic potential of a previous work (Kalosakas et al, J. Appl. Phys. 113, 134307 (2013)) so that it is applicable to out-of-plane deformations of graphene and related carbon materials. The introduced force field is fit to reproduce DFT calculation data of appropriately chosen structures. The aim is to create a force field that is as simple as possible so it can be efficient for large scale atomistic simulations of various sp2 carbon structures without significant loss of accuracy. We show that the complete proposed potential reproduces characteristic properties of fullerenes and carbon nanotubes. In addition, it reproduces very accurately the out-of-plane ZA and ZO modes of graphene’s phonon dispersion as well as all phonons with frequencies up to 1000 cm−1.
GROWTH, DEVELOPMENT, YIELD, AND QUALITY OF SOME NEW RICE VARIETIES IN QUANG BINH PROVINCE
Authors: Nhi Phan Thị Phương , Phú Hà Thanh
Published: October 2017

This research was conducted to evaluate the growth, development and yield of some new rice varieties in order to serve quality rice production in Quang Binh province. The nine rice varieties were designed in randomized complete block (RCBD), three replicates for each variety. The research targets were implemented in according to the rice research regulation. The growing time of these varieties were suitable with the local conditions (115-125 days in the Winter Spring and 105-113 days in the Summer Autumn crops). In general, the rice varieties were less susceptible of deseases and had good quality rice, long grain and suitable for the consumer tastes. We selected two varieties, GM2-17 and LL.HH3 (hybrid rice) had high yields in two Winter Spring and Summer Autumn crops, 62.33 quintals/ ha; 60.79 quintals/ hectare (GM2-17) and 70.04 quintal/ hectare; 66.48 quintals/ hectare (LL.HH3), respectively.
Cultura constructiva en el proceso de urbanización de las Comunidades Campesinas del Valle del Mantaro.
Authors: Galván Canchanya Félix Alberto , Ccahuana Chocce Clemente
Published: October 2017

Para el estudio se estableció como unidades de análisis las comunidades de Cajas Chico, Huamanmarca y Azapampa, considerando que tuvieron procesos urbanísticos comparables que permite comprender estos procesos. Se plantearon los siguientes objetivos: a) Explicar el proceso de urbanización de las comunidades campesinas de Cajas Chico, Huamanmarca y Azapampa. b) Explicar las características de la cultura constructiva de estas poblaciones en el marco del proceso de urbanización que las afecta. Utilizamos el método histórico-analítico y  además del método dialéctico que nos permitió ver el proceso evolutivo del crecimiento urbano (construcción de viviendas) en su efecto de servicio y el impacto de la migración. A partir del impacto de la globalización en los medios de comunicación, la difusión y adaptación al contexto de esa información, se puede comprobar a través del estudio que influye en la arquitectura de las comunidades de Cajas Chico, Azapampa y Huamanmarca a través de: su influencia económica, estilos de vida y estética. Estas se materializan a través de la redes de información, conocimiento; transferencias financieras internacionales, medios de comunicación masiva como la televisión, revistas, periódicos, etc. Y que son adaptadas en el contexto receptor. Los pobladores de las comunidades de estudio manifiestan su diversidad constructiva en el material, ornamentación, espacios y funciones de los mismos.  Así, a través de la arquitectura de sus construcciones podemos analizar desde el punto de vista de la antropología sus actividades en espacios físicamente delimitados y que expresan significados simbólicos. 
Factores de inserción al delito de tráfico de drogas en las internas del Centro Penitenciario de Mujeres de Concepción-Junín
Authors: Condori Apaza Marisol , Reyna Arauco Gustavo Alberto
Published: October 2017

En el Perú, así como en otros países, los delitos cometidos por mujeres se vienen incrementando cada vez más. La modernización y la mentada “equidad de género” no sólo se visualizan en la inserción de la mujer al ámbito público, sino también en su inserción a cometer delitos, lo cual indica que, el delito va perdiendo el “casi” exclusivo carácter masculino que socialmente se tenía adjudicado. De las actividades delictivas señaladas líneas arriba, un significativo porcentaje, en diversos penales de mujeres en el Perú, es el tráfico de drogas, ya que esta ilícita actividad les permite a muchas mujeres continuar con el desempeño de su rol de madre, esposa, abuela y ama de casa. En varias ocasiones son ellas quienes tienen a su cargo la venta de drogas proveídas por los varones, ya que son las menos sospechosas de infracción o simplemente por motivos de sobrevivencia, porque la mencionada actividad les permite sustentar los gastos de alimentación de su familia. En tal sentido, la investigación tuvo como objetivo conocer los factores de inserción al delito de tráfico de drogas. La investigación fue básica, con nivel descriptivo explicativo, diseño de investigación no experimental transversal y enfoque metodológico cuantitativo. La recolección de datos se realizó mediante un cuestionario estructurado aplicado a 24 internas por el delito de tráfico de drogas del Centro Penitenciario de Mujeres de Concepción – Junín. Los principales resultados hallados en la investigación indican que los factores sociales que influyeron en la inserción al delito de tráfico de drogas en las internas del Centro Penitenciario de Mujeres de Concepción – Junín son: el 75% de internas pertenecieron a familias desintegradas y el 70,8% a familias disfuncionales; el 100% de internas manifestaron que su proceso de socialización fue inadecuado. El factor económico que influyó en la inserción al delito es la situación socioeconómica desfavorable, ya que, el 100% manifestó haber incursionado en el delito por necesidad económica. Considerando el factor cultural, los resultados revelan que el 70,8% incursionaron en el delito obedeciendo a su mentalidad facilista y el 75% a su mentalidad ambiciosa para satisfacer sus necesidades.
Diseño de procesos y el desempeño del sistema productivo de la empresa AJEPER S.A. mediante la simulación de sistemas estocásticos
Authors: Camarena L. Miguel O. , Suasnabar T. Jaime , Cristobal V. Eduardo , Espino M. Zully A. , Solano C. Denisse B.
Published: October 2017

El problema que dio origen a la presente investigación es el inadecuado uso y aprovechamiento de los diferentes recursos y el inadecuado diseño de procesos de producción que cuenta la Empresa AJEPER Planta Huancayo cuyos efectos se observa en: bajos volúmenes de producción, bajos niveles en los ratios de productividad, altos tiempos de producción y observándose una sub utilización de algunos recursos. Esta surge debido a la necesidad de optimizar los volúmenes de producción ya que La Planta Huancayo viene atravesando un inminente cierre de operaciones. En esta investigación se utiliza la metodología lean manufacturing para asistir al mejoramiento del proceso de producción de la planta AJEPER Huancayo, integrando los enfoques del pensamiento sistémico y la simulación de eventos discretos. El estudio se desarrollo a través de la construcción de modelos de procesos de la situación actual el cuál ha sido caracterizado a través de tres modelos de simulación y la situación futura implementando modelos de simulación para proyectar los posibles cambios a implementarse y para estudiar los nuevos comportamientos del nuevo sistema.
El estado de la tutoría en la formación académica universitaria
Authors: Quispe F. Gabith M. , Arellano C. Otto E.
Published: October 2017

El estudio de la tutoría tiene su base en los estudios sobre la educación y sus implicaciones en el desarrollo económico de un país y es un tema explorado y en continuo progreso. El objetivo de la investigación es determinar si la tutoría es uno de los elementos determinantes para lograr la calidad en el proceso de enseñanza y aprendizaje en el sistema de la educación superior. Se aplica el método deductivo y enfoque cualitativo - descriptivo. Se realiza una revisión bibliográfica relacionada a la tutoría. Se estudia el caso de la Universidad Boliviana – Universidad Técnica de Oruro, Carrera de Administración de Empresas como caso empírico, en ella se aplica un cuestionario a la planta docente, método que permite comparar factores con casos de universidades del Ecuador, Argentina y México.

Los resultados demuestran: que la definición de tutoría está asociada a las acciones y funciones del docente tutor en aula; el modelo de tutoría está relacionado con los modelos académicos de la universidad y del sistema de educación superior; los factores medibles de la tutoría son importantes para la calidad educativa en la educación superior universitaria; y la tutoría contribuye en la reducción de la deserción y repitencia principalmente.
Caracterización molecular de bacteria Azospirillum sp, Azotobacter sp y Pseudomonas sp. promotoras del crecimiento vegetal de cultivos de Solanum tuberosum y Zea mays.
Authors: Román C. Nicolás , Mamani G. Gloria , García V. David
Published: October 2017

Con el objetivo de generar un banco autóctono con bacterias promotoras del crecimiento vegetal (PGPR) y su posterior utilización como inoculantes del suelo que disminuyan la fertilización química, se tomaron muestras de raíces de cultivos de papa (Solanum tuberosum Var Canchan) y de maíz (Zea mayz Var Blanco mejorado) tratados con cinco tipos de abonamiento: estiércol de ovino, cuy y vacuno, fertilización química y sin fertilizante, de las cuales se aislaron cepas de bacterias nitrificantes correspondientes a los géneros Azospirillum, Azotobacter y Pseudomonas.

 

Las bacterias fueron diferenciadas en base a su morfología, poder generador de auxinas, solubilización de fosfatos, reacción a la catalasa, oxidasa y similaridad genética previa amplificación de la región del mRNA 16S.

 

Los resultados muestran una amplia base genética que necesita ser caracterizada e identificada exhaustivamente. La producción de AIA en Azospirillum llegó hasta niveles de 120 ppm; 118 ppm para el género Azotobacter y 115 ppm en Pseudomonas fluorescens. De cepas seleccionadas, el DNA fue secuenciado, comparado con la Base de Datos del GenBank e identificadas hasta especie, tales como Azospirillum brasilense; Azotobacter vinelandii, A. choccrococum, A. nigricans y A. salinestris. Las secuencias amplificadas con los primer universales 9-27F y 1542R para las cepas de Azospirillum, Azotobacter y Pseudomonas fluorescens utilizados para este estudio no están reportados en la base de datos del GenBank.
Diseño robusto para optimizar pico sistemas solares en el Valle del Mantaro
Authors: Lazo Baltazar Brecio , Huari Vila Oscar
Published: October 2017

El objetivo de la investigación es diseñar un sistema robusto para optimizar pico sistemas solares en el Valle del Mantaro. Para lo  cual se ubicó el lugar de investigación en la cuadra doce del Jirón Libertad del distrito de Huancayo, 12 grados de latitud sur y longitud 75 grados sur. Como resultado se encontró  que los factores más significativos en el sistema pico solar estudiado son: el ángulo de inclinación, la orientación, el tiempo de carga y la estación cuando se realiza las mediciones.
Riesgos del uso de las TICs en adolescentes de la provincia de Tarma
Authors: Orosco Fabián Jhon Richard , Pomasunco Huaytalla Rocío , Torres Cortez Emiliano Esteban , Rosales Puchoc Aracely Milagros , Gálvez Huamán Yan Carlos
Published: October 2017

La investigación está orientada a identificar los riesgos al que están expuestos los adolescentes de la provincia de Tarma al usar las TICs; es de tipo aplicada con nivel descriptivo, se empleó el método descriptivo y el diseño de la investigación fue descriptivo transversal.

La muestra estuvo conformada por 564 adolescentes entre varones y mujeres, de los distritos de Tarma,    Acobamba, Palca, Huasahuasi, Tapo, La Unión Leticia, Palcamayo, San Pedro de Cajas y Huaricolca; cuyas edades están comprendidas entre 12 y 19 años, para recoger los datos se utilizó la técnica de la encuesta a través de un cuestionario. Se concluye que los adolescentes de la provincia de Tarma no están expuestos de manera significativa a los riesgos de: acceso a contenidos inapropiados, sexting, sexcasting, sextorsión, grooming y ciberbullying; pero se recomienda a los  profesores, padres y madres de familia, y a la comunidad Tarmeña, fortalecer y orientar el uso adecuado de las TICs, de modo que no se genera situaciones de riesgo al usar estas tecnologías.
Model Kooperatif GI Berbasis Outdoor Study Meningkatkan Aktivitas dan Hasil Belajar IPA SD
Authors: Suarmika Putu Eka , Faliyandra Faisal
Published: October 2017

Penelitian ini bertujuan untuk mengetahui aktifitas dan hasil belajar siswa, aktivitas guru di SDN 2 Tribungan selama penggunaan model pembelajaran kooperatif tipe Group Investigation berbasis outdoor study. Jenis penelitian ini adalah Penelitian Tindakan Kelas (PTK) yang menggunakan dua siklus yakni siklus I dan siklus II. Berdasarkan tindakan pada siklus I dan siklus II pada, diperoleh aktivitas pada siklus I persentase aktivitas belajar siswa sebesar 65%. Aktivitas beajar siswa pada siklus II meningkat menjadi 90%. Peningkatan aktivitas belajar siswa pada siklus I ke II meningkat sebesar 25%. Hasil belajar siswa pada siklus I persentase hasil belajar siswa sebesar 57% dengan kategori aktif. hasil beajar siswa pada siklus II meningkat menjadi 94,3% dengan kategori sangat aktif. Peningkatan hasi belajar siswa pada siklus I ke II meningkat sebesar 37,3%.
Вплив зовнішнього магнітного поля на структуроутворення та транспортні властивості полімерних композитів на основі епоксидного полімеру та Fe3O4
Authors: Korskanov V.V. , Dolgoshey V.B. , Shantaliy T.A. , Karpova I.L. , Dragan K.S. , Rukhaylo M.V.
Published: October 2017

Разработаны различные типы наполнителей или усилителей для получения композитных материалов с желательными тепловыми, механическими и  электрическими свойствами. Наполнители играют важную переоснащающую роль в повышении эффективности полимеров и  эффективности  производства.  Получены образцы исходного эпоксидного полимера (ЭП) и композитов на основе ЭП и магнетита (Fe3O4), сформированных под действием внешнего магнитного поля и без него. Обнаружено, что формирование композита под действием внешнего магнитного поля приводит к образованию непрерывных каналов из ферромагнитных частиц Fe3O4 в сплошной матрице ЭП. Установлено, что несмотря на высокую собственную электропроводность Fe3O4, наличие вследствие    высокого    межконтактного    сопротивления    внутри    каналов    наполнителя.    Теплопроводность в направлении ориентации частиц Fe3O4, существенно возрастает.
Corrupción versus auditoría forense, ante el desarrollo económico en un sistema social sin preceptos morales
Authors: Mora Aristega Julio Ernesto , Huilcapi Masacón Magdalena Rosario , Gil Espinoza Darwin Jorge , Camacho Villota Washington Alfredo , Uhsca Cuzco Nancy Elizabeth
Published: October 2017

El objetivo de este trabajo es conocer como los delitos de cuello blanco han influido en el desarrollo de las organizaciones y la opinión respecto a este tipo de delincuencia, de tal forma que le pueda servir a las personas para informarse de esta temática no tan reciente, pero muy poco abordada en la sociedad común; además pretende dejar en los lectores el deseo de consultar más sobre cada uno de los delitos de cuello blanco que se fraguan en las empresas y través de los cuales se forjan los grandes fraudes en la organizaciones; se utilizó el método bibliográfico para poder realizar el respectivo análisis de los postulados teóricos y los aportes científicos a la temática proporcionados por diversos autores; aplicando una encuesta a cincuenta y cuatro gerentes de las instituciones públicas y empresas privadas de Babahoyo;  llegando a la conclusión de que los delitos de cuello blanco afectan el desarrollo empresarial en un alto grado, debido a que no se han aplicado los correctivos necesarios y la investigación pertinente, este tipo de situaciones se presenta especialmente en las empresas públicas; además se determinó que la auditoría forense está relacionada con las técnicas de investigación de los delitos de cuello blanco tales como: malversación de bienes, coimas, fraudes, hurtos, engaños, malversación de estados financieros y evasión de impuestos; los cuales se dan por las constantes oportunidades que se presentan en las organizaciones; la auditoría forense no ha sido aplicada debido a que falta conocimiento de cómo ejecutarla.
THE PATTERN OF WAVE TRANSFORMATION USING RCPW ave MODEL AT BAU - BAU COAST, SOUTHEAST SULAWESI PROVINCE
Authors: Baharuddin Baharuddin , Pariwono John I , Nurjaya I Wayan
Published: October 2017

When wind-wave generated on deep water propagates into shallow water they will be transformed into several processes such as refraction, shoaling, reflection, diffraction, and finally collapsing. This research has objective to analyze the pattern of wave transformation which pro pagate into Bau-Bau coastal waters by using RCPWave Model as a numerical model solution to predict wave condition within the surf zone. The model showed that the wave transformation at Bau -Bau Coastal waters was influenced by coastal morphology and characteristic that was more open to the west (to the opensea) than to the east coast (bordered by Buton Strait). Wave transformation occurred from both sides, either from west or east side. When wave were broken at the western coast the wave high from west and east were 1.9 m and 0.5 respectively. At the eastern coast were 1.0 m and 0.7 m. The highest wave high occurred at head land or peninsula.

Keywords: wave transformation, RCPWave, Bau-Bau Coast, refraction, shoaling,reflection, diffraction and collapsing
THE ABUNDANCE OF RECENT FORAMINIFERA IN SURFACE SEDIMENT OF AMBON BAY
Authors: Natsir Suhartati M.
Published: October 2017

Foraminifera are generally live in sea water with various sizes. These organisms consist of planktonic and benthic foraminifera. Geological activity on plutonic and volcanic with vomiting magma is transpiring on, and then affects sedimentation and foraminiferal abundance of Ambon Bay. The study was determined to study the abundance and distribution of foraminifera based on the sediment characteristic of Ambon Bay. Sample collected in 2007 of Ambon Bay showed that only 29 samples of 50 samples containing foraminifera. The collected sediments have 86 species of foraminifera, consisting 61 species of benthic foraminifera and 25 species of planktonic foraminifera. The dominant benthic foraminifera in the surface sediment of Ambon bay were Amphistegina lessonii, Ammoniabeccarii,Elphidium craticulatum,Operculina ammonoides and Quinqueloculina parkery. The planktonic foraminifera that were frequently collected from the bay were Globorotalia tumida, Globoquadrina pseudofoliata, Globigerinoides pseudofoliata, Globigerinoides cyclostomus dan Pulleniatina finalis. Generally, the species dwelled as abundant on substrate sand, whereas the areas within substrate mud have no foraminifera lie on them.

Keywords: Foraminifera, Abundance, Sediment, Ambon Bay
THERMAL DISPERSION MODEL OF WATER COOLING PLTGU CILEGON CCPP DISCHARGE INTO MARGASARI COASTAL WATERS AT THE WESTERN COAST OF BANTEN BAY
Authors: Nurjaya I Wayan , Surbakti Heron
Published: October 2017

Thermal dispersion model based on the hydrodynamics model was applied on PLTGU Cilegon (electric power industry based on gas and steam) at the coast of Margasari, Pulo Ampel District, Serang-Banten. This PLTGU used around 60.000 mP3P/hour of seawater as cooling water system. Therefore, it produced water with high temperature of about 5 PoPC higher than the sourounding of seawater temperature. This high water temperature was flowed out into the coastal waters. This study tried to predict their distribution according to southeast and northeast monsoon. Model verification was conducted both to hydrodynamics component (tide and current) and water temperature. The verification results show good enough patterns between the model results and field measurement.

Key words: Bay of Banten, cooling water system, thermal dispersion, hydrodynamics model
THE DISTRIBUTION OF RECENT BENTHIC FORAMINIFERA IN THE ARAFURA SEA
Authors: Natsir Suhartati M. , Rubiman Rubiman
Published: October 2017

Arafura Sea consists of shallow waters and located in the Southern of Papua to the north coast of Australia. The waters is vegetated by shallow-water ecosytems such as mangrove, seagrass bed, and coral reefs. The Arafura continental shelf is predominated by sediment from late Paleozoic, Mesozoic to Cenozoic and underlain by granitic basement. Foraminifera is a single cell microorgainsm, has pseudopodia with high level of diversity. Foraminifera dwells in every level of sea depth, from estuary to the deep sea. However, a certain species commonly dwells in the specific profundity. The aim of the study was to recognize the distribution of benthic foraminifera in the waters of Arafura Sea and it relation with the environmental characteristics. As many as 11 sediment samples was collected in May 2010 from the water of Arafura Sea using a box core with capcity of 0,3 m3. Laboratory analyses on the colleted samples were performed to determine the type of sediments and identify the benthic foraminifera, and to determine the abundance of each samples. The number of species found from the collected sediments were 37 species consisting of 29 genera of which most of them were member of Suborder Rotaliina and many of them belong to Suborder Miliolina and Textulariina. The most common species of the sampling sites were Ammonia beccarii and Pseudorotalia schroeteriana. The Arafura Sea commonly recognized as shallow waters, open seas, with current speed of midium to high. The predominant sediment type of the waters is sandy mud and little of clay.

Keywords: distribution, benthic foraminifera, sediment and Arafura
POTENTIAL ENERGY OF OCEAN CURRENT FOR ELECTRIC POWER GENERATIONIN COASTAL AREAS OF EAST FLORES, NTT
Authors: Yuningsih Ai , Masduki Achmad
Published: October 2017

The electrical energy is one of the important needs for coastal communities particularly in small islands that has not reached by national electricity network. In order to fulfill this particular electricity needs, we do variety diversification efforts, such as the utilization of the ocean currents. The purpose of this survey is to recognize the morphology of seafloor and characteristic of hydro-oceanography as a fixed reference location in using the current energy. The study area is in the Larantuka Strait between Flores and Adonara islands which is part of the Flores Strait, East Nusatenggara Province. The methods of this study are current measurements, tidal and meteorological parameter observations, condition of coastal morphology and seafloor of the study area. The result show that, the location for turbine position is in area with relatively gentle slope morphology at a 20 meters water depth and it is close to local community. Based on the analysis of ADCP mobile current measurement, the minimum current velocity is 0.004 m/sec and maximum 3.68 m/sec. Whereas, from the ADCP static measurements the current velocity is from 0.002 m/sec to 2.83 m/sec. This condition is closely related to the semi-diurnal tide type in the study area, with two pairs of flood and web events within 24 hours. Therefore, the results of ocean current energy analysis indicate that the study area is very potential for using as a power plant location.

Keywords: potential energy of ocean currents, power plants, energy diversification, Larantuka Strait, East Flores
COASTAL VULNERABILITY PREDICTION TO CLIMATE CHANGE: STUDY CASE IN CIREBON COASTAL LAND
Authors: Rositasari Ricky , Setiawan Wahyu B. , Supriadi Indarto H. , Hasanuddin Hasanuddin , Prayuda Bayu
Published: October 2017

Coastal area is the most vulnerable area to climate change. Cirebon coastal land in Western Java, Indonesia is low-lying coastal area which is one of the potential areal for fish culture and farming. There are also major transportation facilities for western Java province to the whole area in the island (Java) through this area. As low-lying landscape, populated and developing city, Cirebon should be considered vulnerable to future sea level rise. Geomorphology, geo-electric and remote sensing study were conducted during 2008 and 2009 in coastal land of Cirebon. The result showed that most part of coastal area in Cirebon was eroded in various scales which vulnerable turn to worst. Sea water was penetrating throughout several kilometres inland. Valuation on various land-uses would project 1,295,071,755,150 rupiah/ha/year of loss while sea level were rose 0.8 meters that would inundate various land-uses i.e., Shrimp, fish and salt ponds, rice fields and settlement in the area.

Keywords: vulnerability, coastal, climate change, sea level rise
BACTERIA ASSOCIATED HOLOTHURIANS: THE KEY OF HABITAT PREFERENCE, DIET, AND FUNCTIO
Authors: Hatmanti Ariani , Purwati Pradina
Published: October 2017

An investigation of bacteria as holothurians’s feed carried out from May until June 2006 in Medane Bay and Kombal Bay, Lombok, Indonesia. The aims of this study are to know whether holothurians eat bacteria, to observe that bacteria are the key for holothurians’ habitat preference, and to understand the functions of bacteria in holothurians intestine. The results showed there are many kind of bacteria in the substrates and inside intestine of sea cucumber. There are no specificity in performance, species and number of bacteria which found in anterior or posterior of intestine, as well in their substrates. Therefore, the holothurians do not choose specific bacteria for their feed. Bacteria are the consequence of substrates ingested. Some of them can be microflora in holothurians intestine. Bacteria inside holothurians produce some enzymes such as protease, amylase and agarase. This function was proven by the increasing of Total Organic Matters (TOM) in their feces. This evidence supporting Wiedmeyer (1992) statement that sea cucumber adds organic matters in the sediment. So this also firm holothurians’ function in their habitat, as supplier for organic matters. The conclusion is that bacteria are eaten by holothurians by absorption, bacteria is not the key for microhabitat preference for holothurians, and inside the intestine of holothurians, digestion and degradation are the function of bacteria by producing their enzymes.

Keywords: bacteria, holothurians, microhabitat preference, function
MICROBIAL COMMUNITY DURING BIOREMEDIATION EXPERIMENTAL ON OIL SPILL IN COASTAL OF PARI ISLAND
Authors: Sutiknowati Lies Indah
Published: October 2017

There is an information how to identify hydrocarbon degrading bacteria for bioremediation of marine oil spill. We have Bioremediation treatment for degradation of oil spill on Pari island and need two kind of experiment there are tanks experiment (sampling 0 to 90 days) and semi enclosed system (sampling 0 to 150 days). Biostimulation with nutrients (N and P) was done to analyze biodegradation of hydrocarbon compounds. Experiment design using fertilizer Super IB and Linstar will stimulate bacteria can degrade oil, n-alkane, and alkane as poly aromatic hydrocarbon. The bacteria communities were monitored and analyzed by Denaturing Gradient Gel Electrophoresis (DGGE) and Clone Library; oil chemistry was analyzed by Gas Chromatography Mass Spectrometry (GCMS). DNA (deoxyribonucleic acid) was extracted from colonies of bacteria and sequence determination of the 16S rDNA was amplified by primers U515f and U1492r. Strains had been sequence and had similarity about 90-99% to their closest taxa by homology Blast search and few of them suspected as new species. The results showed that fertilizers gave a significant effect on alkane, PAH and oil degradation in tanks experiment but not in the field test. Dominant of the specific bacteria on this experiment were Alcanivorax, Marinobacter and Prosthecochloris.

Keywords: Bioremediation, Biostimulation, DGGE, PAH, Pari Island
INCREASE OF THE THERMOCLINE LAYER DUE TO TSUNAMI 2004 IN NANGRO ACEH DARUSSALAM WATERS
Authors: Hadikusumah Hadikusumah , Lekalete J. D.
Published: October 2017

Research of physical oceanographic conditions post-tsunami was carried out and subsequently compared with the pre-tsunami 1998. Measurement of suhu, salinity and light transmission was conducted by CTDSBE911pls Model. Results showed that the flow in the Straits of Malacca flowed into the northwest and turned back into the Strait of Bengal and the next rotation into the flow of waters along the west coast of Nangro Aceh Darusalam (NAD). The mainstream off coast NAD in the Indian Ocean flowed to the northwest. Upper thermocline layer (17 m to 50 m) moved upward in 2005 and 2006 compared with previous data 1998 (90 m to 125 m). The moving upward thermocline in 2006 was allegedly due to the influence of Indian Ocean Dipole (IOD) positive. This requires further verification through long-term data collection to determine the monthly and annual variations, which will be compared with previous research. Light transmission (Tx) in 2005 from the surface to near the bottom (water column) was found lower than the year 1998 and 2006. This result was allegedly caused by resuspension from the seabed by energy turbulent produced by the tsunami. Heat content between 5 to 65 m depth in 2005 was higher than in 1998 and 2006. The higher heat content during the year of 2005 (post tsunami) was caused by friction due to the influence of tsunami energy, which predominantly found in the mixed layer depth. Type of water masses in the study area was a mixing between the local water mass, Malacca Strait Water (MSA), Bay of Bengal Water (BBW) under the influence of Arab Waters (AW), and the Indian Deep Water (IDW).

Keywords: current, thermocline, heat content, watermass type, and Nangro Aceh Darusalam
THE EFFECT OF SEASONS AND DEPTHS ON GROWTH AND SURVIVAL RATE OF PEARL OYSTER (Pinctada maxima) IN KODEK BAY, NORTH LOMBOK
Authors: Hamzah M. S. , Nababan Bisman , Nababan Bisman
Published: October 2017

The pearl oyster (Pinctada maxima) farming in the West Nusa Tenggara waters in particular and in other areas, complained to the mass mortality of pearl oysters saplings on shell width between 3-4 cm. The mass mortality, allegedly as a result of changing in environmental conditions and triggered by the shift in seasons. This research aimed to determine the effect of seasonal variations in water conditions at different depth levels on growth and survival of seedlings of pearl oysters conducted on March 23, 2008 to February 22, 2009. This research was very useful for pearl oyster farming in an effort to suppress the mass mortality rates based on the appropriate level of depth and seasons. Analysis of variance showed that the seasonal factors, the level of depth, and the interaction between both factors responded very significantly on pearl oyster seedling survival. The "significant difference test" showed that the interaction between season and level of 2 m depth provided the best result with 100% survival. The similar survival rate was also found at a depth of 8 m during the transition season I and the east season. For single factor (depth), the best result for growth and survival rate was found in 2 m deep during the transition season I.

Keywords: Oyster sapling, Pinctada maxima, growth, mortality, season, depth, Kodek Bay
A CONCEPTUAL MODEL ANALYSIS OF SST INFLUENCE ON MARINE BIOTA IN THE SOUTH JAVA SEA
Authors: Sulaiman Albert , Hendiarti Nani , Hendiarti Nani
Published: October 2017

We developed a conceptual coupled atmosphere-ocean-ecosystem model for the South Java seas to investigate interaction between marine biota and SST variability due to monsoon-forced. Ocean and atmosphere are represented by a box model for one dimensional water column. The equation of motions of the zonal wind stress and SST are represented in term of nonlinear oscillator model. Marine biota are represented by three components (nutrient, phytoplankton and zooplankton) of NPZ Edward-Brindley model. The marine ocean-atmosphere coupling mechanism is done through the absorption of blue light by phytoplankton. The system of nonlinear dynamical equation is solved by using Matlab ODE solvers. Monthly SST data is used to compare the model. Result showed that the period and amplitude of oscillation of SST and ecosystem component strongly depend on the parameter choice which describes the dynamical characteristic of the system. The SST and ecosystem variability will strongly correlate with monsoonal wind if we choose the parameter of light attenuation by water 0.2 m-1. Strong seasonal variations associated with monsoonal winds were observed for SST, phytoplankton and zooplankton concentration. On the other hand, the nutrient concentration shows a weak seasonal variation

Keywords: SST, NPZ, monsoon, delayed oscillator
POTENTIAL ROLES OF BIOTIC FACTORS IN REGULATING ZOOPLANKTON COMMUNITY DYNAMICS IN JAKARTA BAY SHALLOW WATER COASTAL ECOSYSTEM
Authors: Rachman Arief , Fitriya Nurul
Published: October 2017

The dynamics in zooplankton abundance were regulated by changes in water physical-chemical parameters and interaction with biotic factors. In this research we examined the relationship between zooplankton community dynamic and important biotic factors, such as predation and food availability, in Jakarta bay. Plankton samplings were done in 10 sampling stations in Jakarta bay, from July to November 2009. Zooplankton samples were collected using horizontal towing method with NORPAC plankton net (mesh size 300 μm). Salinity, water depth, water temperature, and water transparency were measured. Phytoplankton samples were also collected with the same method as zooplankton, using Kitahara plankton net (mesh size 80 μm). Zooplankton taxas were grouped into two groups, the prey and predatory zooplankton. The results showed that there were two different patterns in zooplankton groups dynamic i.e., the single and double peak. The abundance peak in most zooplankton groups, such as copepods, cirripeds, luciferids, and tunicates, were induced by the high food availability during the phytoplankton bloom in August. The high abundance of prey zooplankton groups in August was responded by the predatory zooplankton groups, resulting in high abundance of predatory zooplankton in adjacent month. The high abundance of ctenophores and chordates (fish larvae) were suggested as the main factor for the low abundance of other zooplankton in September. Physical and chemical factors were not the regulating factors due to the stability of those factors during this research period. Thus we concluded that food availability and predator-prey interaction were the main factors which regulate zooplankton community dynamics in Jakarta bay.

Keywords: predator-prey interaction, zooplankton, abundance peak, food availability, phytoplankton bloom