bluuebunny/crossref_metadata_2025 huggingface dataset:
Moving from Chasm to Convergence: Benefits and Barriers to Academic Activism for Social Justice and Equity
Authors: Rose Barbara
Published: January 2018

There are many natural links between academic work and activism that can be used for social justice and equity, but remain underdeveloped in higher education. Using the concept of liminality and the inclusion of personal voice that is central in Scholarly Personal Narrative methodology, this article explores academic activism in multiple ways. First, a series of “purposeful conversations” with educators at the University of Malta suggest that the level of self-affiliation with activism is influenced by academic discipline and the presence of impactful successes related to activism. Challenges within academic activism include devaluing activism within academic structures, and balancing the roles and actions of academic, activism, and personal lives. Second, benefits of activism in student learning are described, including (a) using synoptic learning as a curricular organizing concept for intellectual development, equity, and social justice and (b) exploring activism as a robust organizing concept for student learning across disciplines. Third, systemic barriers (e.g., maintenance of privilege) and anti-activism as moral high ground (e.g., activism as dangerous, too radical, narrowly appropriate, and unnecessary) are identified using two examples of curricular approval processes at a Midwestern university. Fourth, strategies to disrupt barriers to academic activism suggested by these results are presented.
LA REEMERGENCIA DE RUSIA EN EL MUNDO Y AMÉRICA LATINA
Authors: GARAY VERA CRISTIÁN
Published: January 2018

Tras un relativo alejamiento de América Latina, la Federación de Rusia vuelve a ser un actor global en esta región del mundo, no solo por su interés en el campo energético o en la venta de armas, sino por la búsqueda de aliados a diferentes querellas que tiene en el espacio cercano a sus fronteras y que la han enfrentado numerosas veces a Estados Unidos y Europa. En este sentido se explica que hay un campo amplio de iniciativas que han tenido como eje principalmente a Venezuela y Brasil, para acercar la región a sus intereses nacionales, que es el prisma que aplica Moscú en sus relaciones exteriores.
Potencialidades no Ensino de Matemática em turmas de EJA no Ensino Médio: um estudo via Hermenêutica de profundidade
Authors: Garcia Janio De Sá , Cardoso Virgínia Cardia
Published: January 2018

Nossa pesquisa objetivou a análise das potencialidades no ensino de matemática na EJA. Tomamos como fonte de pesquisa os documentos expedidos pelo Ministério da Educação e por algumas Secretarias de Educação, direcionados ao ensino de matemática na EJA, e o relato de quatro professores que lecionam matemática no primeiro termo do ensino médio da EJA, em escolas públicas estaduais, na cidade de Santo André, SP. Intencionamos compreender os sentidos dados por esses professores às potencialidades do ensino da matemática – tanto as dificuldades, quanto às situações bem-sucedidas – através de entrevistas semiestruturadas e da análise dos discursos dos documentos oficiais que permeiam a EJA. Levantamos as ideias dos principais pesquisadores contemporâneos da EJA no Brasil para traçar relações entre esses documentos através de um estudo hermenêutico. A metodologia de pesquisa adotada é qualitativa e está fundamentada na Hermenêutica de profundidade (HP), de John B. Thompson (2011), que define HP como estudo da produção de sentido através de formas simbólicas que são ações, falas, textos e imagens que servem para sustentar ou estabelecer uma relação de poder. Identificamos contradições nos discursos analisados que nos levam a entender que a ideologia que permeia o ensino de matemática na EJA é da classe elitista dominante, vigente no ensino expositivo e tradicional.
Educação Matemática e a Formação de Professores para uma Prática Docente Significativa
Authors: Sandes Joana Pereira , Moreira Geraldo Eustáquio
Published: January 2018

Este artigo trata da formação inicial de professores de Matemática e como essa formação mostra-se deficitária para a realização de um trabalho pedagógico de qualidade em sala de aula, o que impossibilita que os alunos sejam contemplados com um ensino de qualidade e que prepare os mesmos para os desafios cotidianos, ou seja, para vivenciar uma Matemática que extrapola os muros da escola, a Matemática que se usa na vida. Trata de um texto assentado nos preceitos da aprendizagem significativa. Inicialmente, refletimos sobre a formação inicial docente e a Educação Matemática, buscando discutir a aprendizagem face às novas exigências para a área. De seguida, trazemos para o debate a formação continuada em Educação Matemática, discutida aqui, como apoio para a constituição desse sujeito que ensina e aprende Matemática, que é parte essencial do nosso sistema educacional. Além disso, a prática docente foi apresentada como parte imprescindível para o processo de construção do conhecimento matemático nos diversos níveis de ensino. Nossas considerações sobre a temática, em parte, vão ao encontro daquilo que distintos investigadores da Educação Matemática veem martelando, como, por exemplo, o fato de que a imensa maioria dos professores de Matemática não ter recebido uma formação inicial consistente; de que a formação contínua é um meio de não só corrigir eventuais falhas na formação inicial, mas de preparar para os desafios constantes da sala de aula de Matemática; de que as novas necessidades, assentadas na situação em que vivemos, exigem um professor preparado para enfrentar, além das demandas específicas da área, situações adversas que permeiam e influenciam no desenvolvimento de uma aula de Matemática para a cidadania, entre outros. Palavras-chave: Educação Matemática. Formação inicial. Formação continuada. Prática docente. Aprendizagem significativa.
Relation between Quality and Quantity of Sleep and Psychological Distress among Hospitalized Patients
Authors: Rajput Aatir H. , Aslam Nimra , Yousaf Farheen , Muneeb Muhammad
Published: January 2018

Background: Sleep is a fundamental component of good health, however its promotion in acute hospital settings does not appear to be a priority. Causes of sleep disruption are varied and include environmental and bio-cognitive factors, including pain, bright light, noise, anxiety and stress. The environmental and bio-cognitive consequences of sleep deprivation on the health and recovery of hospital inpatients are various. Inadequate sleep can lead to both psychological and physiological consequences. Objective: This observational study was aimed at determining the pattern, quantity and quality of sleep and the prevalence, causes and effect of sleep deprivation / disturbance among patients hospitalized at the elective wards of a tertiary care hospital. Methods: This observational study was conducted from August 2015 to January 2016, upon a sample of 50 patients admitted to Liaquat University Hospital (who had spent at least 4 weeks at the hospital). The sample of patients (chosen via simple random sampling), were interviewed consecutively every morning for 4 days and their mean response was evaluated to account for irregularities in experience. Data was collected using interview based structured questionnaire which included the 42 point DAS scale approved by Australian Center for Posttraumatic Mental Health. The data was analyzed in SPSS v. 17.0 and MS Excel 2013. Results: During the stay at the hospital, DAS score of depression, anxiety and stress all rose. The most reported bothersome elements that disturbed sleep included, pain (30%), Noise (6%), and feeling of unease, irritation and panic (6%). Majority of the sample comprised of female (56%) respondents coming from rural areas (74%) with a low socioeconomic background (86%). The quantity of sleep dwindled between (but not more than) 5 to 6 hours. The quality too (self-rated by the respondents did not rise above a value of 6.5. Conclusion: The conclusion is in line with our hypothesis. With the hustle and bustle happening at all hours in a hospital, patients have trouble getting adequate sleep, which has an evident the quality and quantity of sleep during their stay. Owing to the belief that sleep-deprived patients are less likely to be fully active participants in their care. It is recommended that steps should be taken to deal with this problem on a priority basis.
Impending Early Marriage Leading to Depression, anxiety and Stress: Woes of Female Medical Students at Hyderabad
Authors: Muneeb Muhammad , Rajput Aatir H. , Hanif Tahir , Shaikh Anam , Ali Abid , Khan Sadia
Published: January 2018

Background: Pakistan, like the rest of south-east Asia, is plagued with old trends and traditions that target the fairer sex in particular. Marriage tops all charts in this regard and every parent in our increasingly misogynistic society wishes to marry off their daughter as soon as possible. Doctor brides however have always been seen positively. Parents wish to benefit from this factor and get their daughters married even before they graduate. Objective: We hypothesize that the fear of an impending marriage leads to depression, anxiety and stress among female medical students. This study hopes to gauge the psychosocial and psychosomatic effects. Methodology: This observational cross sectional psychosocial analysis was carried out on a total of 100 female medical students of Liaquat University of Medical & Health Sciences and ISRA University from March to June 2014. Informed consent was obtained and complete anonymity guaranteed. “Google docs” was used to collect data via online structured questionnaire forms. The data obtained was analyzed in SPSS. v. 16.0. Results: 43 percent of the sample confessed that their families had, at least once, been approached for purpose of marriage. 16 percent admitted that they had themselves received marriage proposals. 88 percent of the sample held negative views regarding early marriage before graduation. Upon inquiry, 78 percent of those who had encountered prospects of marriage before graduation admitted to have felt depression, anxiety and stress along with mild psychosomatic symptoms. Conclusion: Females constitute a significant majority of medical students in Pakistan and early marriage is known to adversely affect the prospects of a successful career. On the basis of our result, we conclude that even the fear of impending marriage is inducing depression, anxiety and stress among female students and can potentially harm their education and health.
Life Hassles; Cause and Effect Relations among Diverse Age Groups
Authors: Batool Syeda Farah , Noushad Shamoon , Ahmed Sadaf
Published: January 2018

This study was done to evaluate the basic cause of trauma among people of different ages. Stress levels in subjects were observed and their reported symptoms were analyzed on the basis of physiological indications towards neurological disorder. Impact of stress on individual’s mental health and social life were determined. Sadaf Stress Scale (SSS) was used to determine the level of stress in subjects, a questionnaire based Performa was filled for evaluation of physiological symptoms regarding their trauma. Subjects were divided into four groups according to their ages. Moderate to severe stress was observed among the age group of 18-24 and 25-31, and severe stress was found in 32-38 while subjects lying in last age group i.e. 40+ were in least stress. A cause of trauma varies among different age groups. Stress does have a great impact on nervous system by altering and modulating its function. Continuous exposure to stress or stressful environment can cause severe damage to memory and perception, which either lead you to severe psychological issues or may tempt you to commit suicide.
Time to Fix the Perceived Physical and Psychiatric Disanalogy
Authors: Haider Anum
Published: January 2018

Health is a combination of good physical and mental well-being. Hence, it is important to cater both physical and psychiatric health elements equally. Current practice is mismatch of this ideology and both specialties are very much separately working. In this article, the association between these two health aspects along with underlying mechanisms, underpinning factors for such dissociation, appropriate recommendations and implications will be discussed.
Depressive Symptoms among Patients of Myocardial Infarction
Authors: Rajput Aatir H. , Naz Hina , Iqbal Anser
Published: January 2018

Objective: To investigate the prevalence of depressive symptoms among pre-diagnosed patients of myocardial infarction at a tertiary care hospital in Hyderabad. Methodology: This observational, cross-sectional communal survey comprised of a sample of 100 patients chosen via simple random sampling from 1st December 2015 to 28th February 2016. Written informed consent was obtained before collecting data using interview based structured questionnaires. The data obtained was analyzed using SPSS v. 19.0 and Microsoft Excel 2013. Results: All the patients in the study belonged to an age group between 40 to 90 years. 69% of them being males and 31% females. 48% were uneducated while 52% were educated. 54% belonged to lower economic class, 43 were middle class and just 3% belonged to higher economic class. Mean depression score remained 16.12 for the patients with single heart attack whereas for the patients with repeated heart attacks the score was 19.62. 83% of the patients showed symptoms of anxiety. 51% were retarded in their speech and thought process, while 90% complained of difficulty in work. 62% complained of general aches, 54% had loss of appetite 38% had somatic complaints. 63% of the patients has health worries, 59% lost weight while 52% felt depressed. Conclusion: Study suggests that patients belonged to an age group of mostly 40 and onwards. Major number of patients belonged to male gender. A significant number of patients were un-educated. Patients with repeated attacks showed higher levels of depression. Majority of the patients showed symptoms of depression and complaints due to it.
Depression, Anxiety & Stress among Patients of End Stage Renal Disease Undergoing Hemodialysis
Authors: Rajput Aatir H. , Shaikh Maryam , Kumar Sooraj
Published: January 2018

Objective: This study is projected to check the prevalence of depression, anxiety and stress in the patients of End Stage Renal Disease (ESRD) undergoing hemodialysis at centers in Hyderabad and investigate the reasons behind it. Methodology: This observational, multi-center study comprised of a sample of 100 patients of ESRD undergoing hemodialysis selected (via simple random sampling) from different hospitals of Hyderabad. The data was collected using interview based structured questionnaires, after taking informed consent, from 1st Dec 2014 to 10th Feb 2015. Levels of depression, anxiety and stress were gauged using the DAS scale approved by the Australian Center for Posttraumatic Mental Health. Results: According to the mean scores obtained, moderate levels of depression and stress while severe levels anxiety prevailed. 69% patients declared diet control rules as bothersome. Although, 50% of respondents were on dialysate for more than a year and 83% underwent dialysis twice per week yet the mean levels of serum albumin and urea were not within normal range. Conclusion: On the basis of this result we come to know that great numbers of patients of ESRD undergoing hemodialysis were suffering from anxiety depression and stress and uremia.
Somos un milagro de la química
Authors: Velázquez-González C , Velázquez González D
Published: January 2018

La química no solo se restringe a los laboratorios, cada uno de los seres vivientes que habitamos este planeta somos productos de esta, en cada uno de los aspectos de nuestra vida está presente la química. Desde el proceso más simple que se desarrolla en nuestro organismo, hasta el más complejo; realmente no se podría explicar la vida en la Tierra sin las reacciones químicas. Incluso, para la existencia de un ser humano como tal, necesita de la química para que este maravilloso proceso tenga lugar, cuando fuimos concebidos, se requirió de un óvulo y un espermatozoide, pero para esta reunión tan importante de nuestra vida sucediera, se necesitó de un motor químico, que es una de las razones porque podemos decir que somos pura química.
Auxiliares diagnósticos en Neumología
Authors: Guevara Cabrera M.
Published: January 2018

En la búsqueda de un diagnóstico definitivo, actualmente el médico cuenta con una gran variedad de procedimientos a su disposición para apoyo en la sospecha clínica, incluso en la terapéutica. Existen auxiliares sencillos no invasivos para determinadas patologías y procedimientos invasivos con técnicas especiales, es por ello que el médico debe conocerlas y saber elegir el mejor método diagnóstico, acorde y necesario a la sospecha clínica, con el fin de evitar invadir al paciente con estudios innecesarios, implicando un riesgo elevado de morbimortalidad, además, un alto costo para el paciente e incluso sin beneficio alguno, ya que algunos resultan ser terapéuticos.Un simple examen radiológico de los pulmones y la pleura ha cambiado con la ayuda de la biotecnología, ya que se han creado aparatos innovadores que incluyen imágenes de muy buena calidad y resolución tal como de tomografía computarizada, resonancia magnética nuclear y ultrasonido, entre otras. Estos procedimientos varían considerablemente, no sólo en cuanto a fiabilidad y especificidad de diagnóstico, sino también en términos de la incomodidad y el peligro para el paciente. Conocer las actualidades sobre los auxiliares diagnósticos en patología respiratoria nos llevará a la adecuada aplicación de éstos, comenzando con procedimientos que impliquen poco riesgo y sólo si el paciente requiere, continuar con procedimientos complejos, valorando la morbilidad y la mortalidad potencial.
El reto del estudiante universitario ante su adaptación y autocuidado como estrategia para disminuir problemas crónicos degenerativos
Authors: Sánchez Padilla ML , Álvarez Chávez A, , Flores Cerón T. , Arias Rico J. , Saucedo García M.
Published: January 2018

El ingreso a la universidad es un momento de gran satisfacción y orgullo, ya que se alcanza una meta que pocos logran, pero también muchos se quedan en el camino. También constituye el inicio de un periodo crítico de adaptación que plantea diversos retos, entre ellos, convivir con una gran cantidad de compañeros que provienen de muy diversos marcos socioeconómicos y culturales, que realizaron sus estudios previos en distintas escuelas con diferentes planes de estudio, y cuyas existencias están matizadas por estilos de vida muy variados o poco saludables, al ingresar a la universidad los patrones de vida cambian debido a las cargas de trabajo pues hay que cumplir con las tareas encomendadas a costo de muchos sacrificios como es la alimentación y el descanso, derivado de la falta de adaptación y autocuidado del estudiante, le provoca manifestaciones que lo pueden llevar a desarrollar problemas crónicos degenerativos como lo es la diabetes, hipertensión arterial y obesidad problemas que actualmente se presentan en personas más jóvenes. Por lo cual se justifica el interés de mirar al estudiante desde sus diferentes ámbitos con la finalidad de que no sea presa fácil y se proporcionan algunas de las estrategias para lograr una mejor adaptación y autocuidado en su vida universitaria.
Determinantes socio-ambientales de la salud en la Colonia San José El Mirador Apan Hidalgo, México
Authors: Ruvalcaba Ledezma JC , Pelallo Martínez NA , Muñoz Juárez S. , Cortés Ascencio SY , Prieto García F. , Gaytan Oyarzún JC , Alanis Maya GD , Domínguez Martínez A. , Juárez Pluma E.
Published: January 2018

Entre los determinantes de la salud destacan los estilos de vida, estos son más importantes que el incremento en hospitales, representan los retos principales para mejorar la salud poblacional, el estilo de vida de los mexicanos y la accesibilidad a servicios de salud son el reto de políticos y científicos para mejorar el estado de salud de la población. El objetivo consistió en identificar los determinantes socio ambientales de la salud en la Colonia San José el Mirador, Apan Hidalgo, México. Material y métodos. Se realizó un estudio exploratorio en 30 familias vulnerables económicamente de la Colonia San José el Mirador, Apan Hidalgo, México. Resultados y conclusión. Existen riesgos de enfermedad derivados de la pobreza, las personas utilizan plaguicidas y esto podría estar asociado con el escaso conocimiento con que cuentan respecto a los riesgos que implica el aplicar este tipo de químicos, e incluso respecto a la utilización de plaguicidas como lo es el Furadan.
Componentes de la memoria desde los modelos de multialmacén y niveles de procesamiento
Authors: Galindo Luna DA
Published: January 2018

La investigación sobre la complejidad del pensamiento y la conducta humana ha demostrado que existen diferentes factores asociados a estos procesos. En este caso, la memoria humana constituye uno de estos elementos indispensables para describirlos. La memoria es un proceso que ayuda en la retención de información y a recurrir a las experiencias previas para hacer uso de esa información en el presente. Desde el contexto escolar, la estimulación de la memoria provee un recurso para que el individuo integre el conocimiento de la memoria a largo plazo con la información en el almacén temporal, desarrollando capacidades propias para alcanzar un aprendizaje significativo. Actualmente existen diferentes análisis sobre los componentes de la memoria por lo que este trabajo se describe un acercamiento al funcionamiento de la memoria y los diferentes elementos que intervienen en dichos procesos desde los modelos de multialmacén hasta los niveles de procesamiento.
SCREENING OF INDONESIAN ORIGINAL BACTERIA VIBRIO SP AS A CAUSE OF SHRIMP DISEASES BASED ON 16S RIBOSOMAL DNA-TECHNIQUE
Authors: Felix Feliatra , Nugroho Titania T , Silalahi Sila , Octavia Yuslina
Published: January 2018

Shrimp disease caused by Vibrio sp is one of the main limiting factors in the increasing production in shrimp farming. This disease may kill the shrimp and cause high loss in shrimp culture in South East and East Asia. Samples of 10 individuals of a ten months cultured giant tiger prawn as well as 1 liter pond water and sea waters were collected from shrimp pond in Bengkalis Island, Sumatra. Samples of shrimps were also collected from Jepara shrimp pond in Central Java and they were selected by looking at their behavior and unhealthy physical characteristics. Amplification, rDNA 16s sequencing and bioinformatics analysis to identify Vibrio species were conducted in Biotech Center, BPPT Serpong Banten. The results of DNA sequencing of each bacteria isolate were compared to DNA sequence from international DNA bank database. Tracing were made by BLAST (Basic Local Alignment Search Tool) system accessed through the internet at http://www./ncbi.nlm.nih.gov/blast. The result of this study found seven strains of Vibrio sp bacteria where five of which (V. alginolyticus, V. parahaemolyticus, V. harveyi, V. shilonii and V. vulnificus) were already registered in the world gen bank with homolog level above 97%. Meanwhile, another two strain found in this study were not found in the list of world gen bank and therefore are considered as native Vibrio sp bacteria from Indonesia.Keywords: Vibrio sp, bacteria, shrimp, aquaculture, fish disease
THE CHARACTERISTIC OF DEEP SEA FORAMINIFERAL COMMUNITY IN TOMINI BAY, SULAWESI
Authors: Dewi Kresna Tri , Hanafi Mustafa , Hanafi Mustafa
Published: January 2018

A total of 14 sediment samples from Tomini Bay, Sulawesi were used for this study as a component of sediment. The samples were carried out by using a gravity corer at water depth range between 600 and 1400 m. This study was a part of mapping activity on marine geology and geophysics during the first cruise of R/V Geomarin III in 2010. The purpose of this study was to examine the subsurface geology related to the potency of energy and mineral resources. Top core sediment samples were washed through 0.063mm opening sieve and then dried in an oven.  About maximum 300 foraminiferal specimens were picked from every dried washed residue sample to separate them from other particles under a binocular microscope with brush and water. The result showed that most samples were dominated by planktonic foraminifera (>90%), such as Globorotalia menardii, Orbulina universa, Globigerinoides ruber and others as typical of deep sea sediments.  On the other hand, benthic foraminifera was found less than 10% that was represented by Cibicidoides wuellerstorfi, Ceratobulimina pacifica, Pyrgo sp., Bolivinita quadralatera, Uvigerina peregrina, etc. The characteristic of deep sea foraminiferal community of this area may be used for interpreting environmental deposition in the adjacent areas that is useful for petroleum exploration. Keywords: foraminifera, deep sea, Tomini Bay, Sulawesi.
BENTHIC FORAMINIFERA AS BIOINDICATOR OF CORAL REEF ENVIRONMENTAL CONDITION BASED ON FORAM Index IN NATUNA ISLANDS, PROVINCE OF RIAU ISLANDS
Authors: Gitaputri Kinanti , Kasmara Hikmat , Kasmara Hikmat , Kasmara Hikmat , Erawan Tatang S. , M. Suhartati , Erawan Tatang S. , Erawan Tatang S. , M. Suhartati , M. Suhartati
Published: January 2018

Foraminifera is one of single-celled protozoa, living in the water environment especially marine waters. This organism can be used as bioindicator of environmental conditions of coral reefs through a simple index called FORAM Index. The purpose of this research are to obtain FORAM Index values​, to know any species of benthic foraminifera bioindicator of coral reefs environmental conditions that have been found and to find out whether there is a relationship between FORAM Index to the condition of coral reefs based on coral coverage percentage. The research used survey method on sediment sampling and measurement of environment parameters by P20 LIPI team in April 2011. Several important steps in this research such as sediment samples preparation, sample observation, and sample identification. The results showed that there were 80 species and 31 genera benthic foraminifera bioindicator of coral reefs environmental conditions were found in the Natuna Islands. The condition of coral reefs in the Natuna Islands based on FORAM Index (FI) values ​​ranged from 2.6 to 5.94, and overall there was a positive relationship between FORAM Index and the condition of coral reefs based on coral coverage percentage i.e., the increase of FI was followed by the increase of coral coverage percentage.  However, in the terms of correlation there were several different results, there was a strong correlation and a weak correlation. Keywords: foraminifera, FORAM index, coral reef.
THE CONDITION AND DISTRIBUTION OF STONY CORALS (Scleractinia corals) IN BANGKA WATER
Authors: Siringoringo Rikoh Manogar , Hadi Tri Aryono
Published: January 2018

Bangka water is well known as the best tin producer in which there are many off-shore tin-mining activities conducted by both local people and tin companies. Such condition apparently brings negative impacts to marine life. Stony corals are considered as the major component of coral reef ecosystems whose condition is influenced by environmental condition. The aim of this study is to observe the general condition of coral reefs and the distribution of stony corals in Bangka Water. The study was carried out between September and November 2010 by taking 10 stations. The method used was LIT as long as 70 meters installed parallel to the coast line. The result indicates that generally the condition of coral reef was categorized as fair condition, the coral cover averaging at 47, 82 %. There were 89 species of stony corals found, divided into 13 genera. The most dominant species was Porites lutea , particularly at Station 6 by 33,3%. The prolonged turbidity mainly caused by tin-mining activities is thought to lead the coral reefs to critical condition particularly in some areas. Keywords: stony corals, coral cover, distribution, Bangka Water.
SEDIMENT DISTRIBUTION BASED ON GRAIN SIZE ANALYSES IN WEDA BAY, NORTHERN MALUKU
Authors: Nugroho Septriono Hari , Basit Abdul
Published: January 2018

An integrated study of sediment distribution was conducted in Weda Bay, Northern Maluku to provide general information on transportation and deposition process based on sediment grain size distribution. The study was conducted during the Weda Bay Expedition using the “Baruna Jaya VII” research vessel in March 13th –22th 2013. Sieving method (granulometric) was used to analyze the grain size. The results indicated that in general the pattern of sea floor sediment distribution was dominated by clay – sand grain-sized. The current speed influenced the sediment transport, deposition, and distribution.  Larger fractions of sediment were quickly settled on the sea floor due to stronger currents around Southern area (Widi islands), meanwhile the lesser fractions of the transported away into other places with weaker currents conditions. Keywords: current, the Weda Bay expedition, granulometric, grain size, sediment distribution
PHOTOPROTECTIVE EFFECT OF SUNSCREEN CREAM WITH ADDITION OF CARRAGEENAN AND BLACK MANGROVE FRUIT (Rhizopora mucronata Lamk.)
Authors: Purwaningsih Sri , Salamah Ella , Adnin M. Nur
Published: January 2018

The need of people’s face protection  from sun exposure is continuosly increasing. However, the available sunscreen in the market are mostly chemicaly generated. Seaweed (Kappaphycus alvarezii) produced carrageenan, which can be used as stabilizer, thickener, and emulsifier on sunscreen production.  Black mangrove fruit (R. mucronata) contains an antioxidant activity, tanin, flavonoids, and phenolic compounds, which are potential to be used for UV light absorber as well as skin protector. The aims of this research were to determine: (1) the best carrageenan concentration in the cream; (2) content of total phenol, flavonoids, and tannin of mangrove fruit extract; and (3) Sun Protection Factor (SPF) value of sunscreen cream.  The experiment used a complete random design  and with Duncan test.  The result showed that the best natural sunscreen formulation was an addition of 0.5% carrageenan and 1%  extract  from R. mucronata. The best characteristics of natural sunscreen were found within the level of 7.62 pH, 38.250 cP viscosity, 100% emulsion stability, 3.72% shrinkage, and  <102 colonies/g total microbial, 10.21 ± 0.06  SPF content,  37.90% total phenol,  0.51% total flavonoids, and 6.20 mg/g tannins.   Keywords: antioxidant, carrageenan, flavonoids, Rhizophora mucronata, SPF
SUSTAINABILITY FADs MANAGEMENT ON ECONOMIC DIMENSION IN THE KEI ISLANDS SOUTHEAST MALUKU REGENCY
Authors: Jeujanan Benny , Martasuganda Sulaeman , A. Sondita M. Fedi , Yusfiandayani Roza , Monintja Daniel
Published: January 2018

Fish aggregating devise (FAD) based fisheries have become a dominant economic support (about 90%) of the community of the Kei Islands in Southeast Maluku Regency. However, it will not last long if the fisheries is not well managed and financially balanced. This study aimed to analyze the attributes of sustainable FADs-based. fisheries and to assess the financial feasibility for an investment. The method used was the analysis of FADs investment, the consumption and income of the fishermen’s households of mini purse seine and FADs, contribution to the local revenues, and the growth of fishing supporting business. The analyses results showed that the investment for a FADs was of Rp. 13,714,000, mini purse seine of Rp. 426,875,000, handline of Rp. 71,75 million, and troll lines of Rp. 72,75 million, household consumption of Rp. 13,625,730. The income of FAD fisherman was of Rp. 164,143,125, mini purse seine fisherman of Rp. 164,143,125, and entrepreneur of Rp. 328,286,250. The index value of the sustainable FAD management was 62.17 indicating a sustainable index.  Keywords: FAD (Fish aggregating device), Kei Islands, Management, Sustainability
MANGROVE FOREST CONDITION IN PIRU BAY, WEST SERAM, MOLUCCAS
Authors: Ahmad Fasmi
Published: January 2018

Information on condition and biodiversity of mangrove ecosystem to support a sustainable management of mangrove ecosystem is very important in the coastal region of Eti village, Piru Bay, West Seram, Molluccas. The purposes of this study were to determine the condition and biodiversity of mangrove ecosystem in the village of Eti, Gulf Piru. Filed data collection was conducted in November 2010 using the line transect method. The box size along the transects was made in accordance with its purposes such as 10 x 10 m2 for trees, 5 x 5 m2 for sapling, and 1 x 1 m2 for seed. The distance between the box transect was 25 m. Number of individuals of each species were counted and the diameter at the chest-height was also measured. Results showed that sixteen species were found within ten genera. There were 9 species of tree categories, 10 species of sapling categories, and 8 species of seed categories. The highest density and frequency of occurrence for the three categories was represented by Rhizophora apiculata, while the largest coverage percentage was represented by Sonneratia alba. The highest important value was also represented by Rhizophora apiculata. In general, the condition of mangrove forests in the village of Eti, Piru Bay was still relatively good, but the local community was very active to take advantage of these mangrove forests products such as charcoal, fencing, and wood that they sold every week. Therfore, it is necessary for local government efforts to protect the mangrove ecosystem from destructed activities of the local community.Keywords: mangrove forest, Rhizophora apiculata, Sonneratia alba, Teluk Piru, Molluucas
MORPHOLOGICAL CHARACTER AND MOLECULAR IDENTIFICATION WITH COI GENE MARKER OF HORSESHOE CRABS (Tachypleus gigas) AT COASTAL WATERS OF NORTHERN JAVA ISLAND
Authors: Meilana Lusita , Wardiatno Yusli , Butet Nurlisa A , Krisanti Majariana
Published: January 2018

The existence of horseshoe crabs Tachypleus gigas is currently on the threatened condition and its population status is also unclear. The objectives of this research were to asses the horseshoe crabs morphological characters and to identify based on molecular marker of Cytochrome Oxydase Subunit I (COI) gene. The samples were collected from five locations (Segara Menyan Subang, Ujung Kulon Banten, Tambak Lorok Semarang, Betah Walang Demak, and Kenjeran Surabaya) in October 2014 until June 2015. A total of 27 parameters for 62 individuals were used to determine connectivity and character identifier among populations. Data were tested using non-parametric analysis. While, the 5 individuals from each sites were used for molecular analysis including several stages of the DNA extraction, DNA electrophoresis, amplification and visualization of DNA fragments, and DNA sequencing. The results obtained based on morphological characters that T. gigas of Surabaya formed a unique group due to its body size (X1-X2 and X4-X16) was larger than the other 5 body parts (X22, X23, X26-X28) of Semarang, Demak, Subang, and Banten. According to molecular results, there were 650 bp conserve nucleotide sequences. Analysis using software MEGA 5.0 showed that there were 73 existence of specific nucleotide sites that can be used to distinguishes between T. gigas in-groups  and out-groups (T. gigas from Central Arabian Sea, T. tridentatus from Sweden, and Carcinoscorpius rotundicauda from USA).Keywords: horseshoe crabs, Java coast, morphology, identification molecular, CO1 gene.
REPRODUCTION BIOLOGY EASTERN LITTLE TUNA Euthynnus affinis IN THE SUNDA STRAIT
Authors: Ardelia Vera , Vitner Yon , Boer Mennofatria
Published: January 2018

Eastern little tuna is small pelagic fish that has high economic value. Fishing effort of the eastern little tuna for the last eight years have also exceeded the optimum level. To ensure the sustainability of the pelagic fish resources, it is necessary to perform the management efforts. This study was to observe reproductive Biology of the eastern little tuna, as one of the necessary information in the management of fishery resources. Fish -samples were collected from the catch of local fishermen in April-August 2015. Based on T test (α = 0,05), the eastern little tuna males and females showed positive allometric growth patterns. Average size of the first time caught fish for the female (308,37 mm) and male (280,63 mm) was smaller than that observed in those first time maturity gonads (ranging  407-408 mm for female and 438-440 mm for male).  The eastern little tuna spawn gradually or partially (partial spawner), and have high reproductive potential with fecundity ranged 17.814-560.792 eggs (average fecundity: 109.807) in fish of 285-630 mm body length. The gonad maturity level of the eastern Little Tuna is dominated by Gonad maturity level I and II,(immature). The value of gonad maturity for the female level is about 0,0769-0,6879 and the male is 0,1913-0,3000.
ZOOPLANKTON COMMUNITY STRUCTURE AT MAJAKERTA ESTUARY AND ITS SURROUNDING WATERS, INDRAMAYU REGENCY, WEST JAVA PROVINCE
Authors: Widyarini Happy , Pratiwi Niken T.M. , Sulistiono .
Published: January 2018

Majakerta estuary and its surrounding waters have a high potential fishery resource which is commonly utilized by the community around the area. Fluctuation of physical and chemical parameters of the waters and fishery activities around the estuary can influence the existence of  zooplankton. This study was conducted from December 2014 to May 2015. Samples of the zooplankton were collected monthly at four stations (consisted of sea, river and estuary areas). Based on the study, zooplankton in the  Majakerta estuary and its surrounding waters consisted of six classes; i.e. Protozoa (11 genera), Crustaceae (4 genera, 1 nauplius stadia), and Rotifera (4 genera). A higher abundance was found at the sea (29025 ind./m3), while a lower  abundance was at the river and estuary (7147 ind./m3 dan 7582 ind./m3).  Based on the zooplankton diversity index, it can be inferred that the value was relatively low. There were two habitat groups, namely Station Group 1 (Station 1 and  2; river and estuary) and Station Group 2 (Station  3 and 4; sea) with influencing parameters such as  transparency, pH, and salinity.  Keywords: estuary, Majakerta, zooplankton, community structure
PRELIMINARY STUDY OF LARVAL DEVELOPMENT Oryzias javanicus IN INDONESIA
Authors: Puspitasari Rachma , Suratno .
Published: January 2018

Java medaka Oryzias javanicus potentially developed as test organism, represents the coastal region because it has a high adaptability in freshwater, brackishwater and marine environments. Utilization of it as a test organism has some obstacles such as lack of number of test organisms with same size or age. The fulfillment of number can be solved if the test organism is cultivated exclusively in the laboratory. This study was a preliminary study to get information about suitable salinity for spawning and hatching. Parameter observed were spawning ability in 0 and 20 ppt and hatching rate of egg among 0. 15 and 30 ppt and development of larval fish in 0 ppt. Result indicated that the fish was be able to spawn in 0 and 20 ppt. Eggs were hatched within 9 days in 30 ppt, faster than in freshwater and 15 ppt. In general, O. javanicus was be able to spawn either in freshwater or seawater, but there are differences in the behavior of fish in the laying of egg. Fish will carried their eggs in the abdomen in freshwater, while 20 ppt salinity fish tends to release the eggs. O. javanicus be able to live and lay eggs on freshwater and seawater. Selection of salinity is adjusted to test requirement in egg phase, pascalarva or adult. In general, breeding of fish easier and faster done in fresh water while hatching eggs take place more quickly in high salinity.Keywords: Indonesia, Java Medaka, Oryzias javanicus, test organism
POPULATION STRUCTURE AND MORPHOMETRY OF HORSESHOE CRAB Carcinoscorpius rotundicauda, Latreille 1802 IN KAMPUNG GISI COASTAL AREA OF BINTAN BAY OF RIAU ISLANDS PROVINCE
Authors: Anggraini Rika , Bengen Dietriech G. , Natih Nyoman Metta N.
Published: January 2018

Horseshoe crab, Carcinoscorpius rotundicauda is frequently found in the coastal zone of Bintan Bay of Riau Islands Province. The study was conducted from August to September 2016 in coastal area of Kampung Gisi, Bintan bay. The aims of the study were to analyse the population structure and morphometric characters of horseshoe crab and its relation to the coastal environmental characteristics. Sampling of horseshoe crab was taken using belt transect method, and coastal environmental parameters were measured in-situ. The results show that b values of length-weight relationship were found to be 3.3 (male) and 2.6 (female) respectively. Furthermore, the growth pattern of males were positive allometric, and females were negative allometric. Horseshoe crab are closely related to sandy mudflats sediment, brackish water salinity and mangrove habitat distribution.  Keywords: horseshoe crab, population structure, morphometry, environmental characteristics, Bintan Bay
THE EFFECTS OF DIFFERENT CHILLING METHOD AND STORAGE TIME ON THE ORGANOLEPTIC QUALITY OF FRESH SKIPJACK TUNA
Authors: Litaay Christina , Wisudo Sugeng Hari , Haluan John Haluan , Harianto Bambang
Published: January 2018

Fish freshness plays an importantant role in determining quality of fish product. Organoleptic is one of sensorik method for determining fish freshness. The fish deterioration mainly affected by temperature. This study aimed to determine the best method for determining organoleptic quality of skipjact tuna based on chilling methods and storage time. Fish sampling were taken from the Seram Sea, Maluku Province. Chilling methods was done by the different ratio between the ice and fish: first was without using ice, second was ratio 1:1 and the third was ratio 1:2. The time storage were 0, 2, 4, and 6 hours.The results showed that chilling methods ratio between the ice and fish of 1:1 with 6 hours storage time provided the best organoleptic quality with eye 8.87, mucus 8.83, gill 8.67, meat 8.73, odour 8.80, and texture 8.86.  Keywords: chilling methods, organoleptics, skipjact tuna
NUTRITIONAL VALUE AND HEAVY METALS CONTENTS OF THE DRIED SEA CUCUMBER Stichopus vastus FROM SALEMO ISLAND, INDONESIA
Authors: Rasyid Abdullah
Published: January 2018

The dried sea cucumber Stichopus vastus is one of the commercially species harvested in Indonesian waters. This study aims to highlight the nutritional value and heavy metals content of dried sea cucumber S. vastus. Proximate (moisture, ash, protein, fat and carbohydrate), mineral (sodium, calcium, potassium and iron) and heavy metal (mercury, cadmium, arsenic and lead) were determined by standard method of AOAC, while phosphorous was determined by spectrophotometric method. Chondroitin sulphate was determined by UPLC method, glucosamine sulphate and vitamin (A, B1, B2 and E) by HPLC method. Results show that protein was the major component in proximate analysis of dried sea cucumber S. vastus in the present study. The protein content was 38.70%. Moisture, ash, fat and carbohydrate content were 19.46%, 34.04%, 0.38% and 7.42% respectively. All vitamins and heavy metals examined in this study were not detected. The sodium content was 8054.36 mg/100 g higher than other minerals. Calcium, potassium, phosphorus and iron content were 2449.9 mg/100 g, 159.77 mg/100 g, 5085.2 mg/100 g and 520.8 mg/100 g respectively. Glucosamine sulphate content was found to be 2.429 g/100 g, whereas chondroitin sulphate was found to be 1.115 g/100 g. It can therefore, be concluded that the dried sea cucumber S. vastus from Salemo Island is safe for human consumption and hence can be used as a source of food supplement in the future. Keywords: food supplement, Salemo island, Stichopus vastus
EGGS PRODUCTION OF GROUPER HYBRID FOR SUPPORTING HATCHERY BUSINESS
Authors: Ismi Suko
Published: January 2018

The grouper hatchery now has been widely developed, usually purchased eggs from the business that produces hybrid grouper eggs   in accordance with the amount as needed. Eggs grouper that is currently in demand are eggs grouper cantang that is a cross-breed between female tiger grouper (Epinephelus fuscoguttatus) and male giant grouper (Epinephelus lanceolatus) and cantik that is a cross-breed between female tiger grouper and male grouper batik (Epinephelus Microdon). The purpose of this research is to get information about hybrid egg production activities, marketing and economics. The study was conducted in Buleleng regency in January-December 2015, data was taken from five hatchery or business that produces only hybrid grouper egg that is one business (A) in the village of Banyuasri, Buleleng district; Three businesses (B); (C) and (D) in the village of Penyabangan, Gerokgak district and the effort (E) in the village of Banyupoh, Gerokgak district, the data were analyzed descriptively. The results of the five businesses may produce as many eggs as five to eight times a year by the amount that can be marketed  24,200,000 - 44,500,000 eggs. The result of business analysis R / C ratio > 1 which means the business is profitable. Keyword: eggs, hatchery, hybrid, production, support
Cu/Ag core/shell particles via modified arc discharge method
Authors: Quan Feng , Wu Qihui , Mao Aiqin , Zuo Dashuai , Wang Biao , Yu Haiyun
Published: January 2018

Here we report, for the first time, a modified arc-discharge method for synthesis of Cu/Ag core/shell particles with an Ag shell thickness of about 5 nm, based on the difference in the melting points and the evaporating pressures of the elements Cu and Ag. The present approach can as well provide wider application to synthesis of other core/shell structures with high melting-point metal elements as core and low melting-point metals as shell.
Singlet Oxygen and Free Radical Reactions of Retinoids and Carotenoids—A Review
Authors: Edge Ruth , Truscott T.
Published: January 2018

We report on studies of reactions of singlet oxygen with carotenoids and retinoids and a range of free radical studies on carotenoids and retinoids with emphasis on recent work, dietary carotenoids and the role of oxygen in biological processes. Many previous reviews are cited and updated together with new data not previously reviewed. The review does not deal with computational studies but the emphasis is on laboratory-based results. We contrast the ease of study of both singlet oxygen and polyene radical cations compared to neutral radicals. Of particular interest is the switch from anti- to pro-oxidant behavior of a carotenoid with change of oxygen concentration: results for lycopene in a cellular model system show total protection of the human cells studied at zero oxygen concentration, but zero protection at 100% oxygen concentration.
Finite Difference/Collocation Method for a Generalized Time-Fractional KdV Equation
Authors: Cao Wen , Xu Yufeng , Zheng Zhoushun
Published: January 2018

In this paper, we studied the numerical solution of a time-fractional Korteweg–de Vries (KdV) equation with new generalized fractional derivative proposed recently. The fractional derivative employed in this paper was defined in Caputo sense and contained a scale function and a weight function. A finite difference/collocation scheme based on Jacobi–Gauss–Lobatto (JGL) nodes was applied to solve this equation and the corresponding stability was analyzed theoretically, while the convergence was verified numerically. Furthermore, we investigated the behavior of solution of the generalized KdV equation depending on its parameter δ , scale function z ( t ) in fractional derivative. We found that the full discrete scheme was effective to obtain a numerical solution of the new KdV equation with different conditions. The wave number δ in front of the third order space derivative term played a significant role in splitting a soliton wave into multiple small pieces.