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Search Results: 1 - 10 of 2945 matches for " JULIE EKASARI "
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Evaluation of Biofloc Technology Application on Water Quality and Production Performance of Red Tilapia Oreochromis sp. Cultured at Different Stocking Densities
HAYATI Journal of Biosciences , 2012,
Abstract: This study evaluated the effect of biofloc technology (BFT) application on water quality and production performance of red tilapia Oreochromis sp. at different stocking densities. Three different fish densities were applied, i.e. 25, 50, and 100 fish/m3, and for each density there were Control (without external carbon input) and BFT treatments. Mixed sex red tilapia with an initial average body weight 77.89 + 3.71 g was cultured in 3 m3 concrete tanks for 14 weeks. Molasses was added on BFT treatments as the organic carbon source at a C/N ratio of 15. Control treatments of each density tested showed more fluctuated water quality parameters throughout the experimental period. The highest TAN and nitrite-nitrogen were observed in control treatment at a stocking density of 100 fish/m3 (3.97 mg TAN/L and 9.29 mg NO2-N/L, respectively). The highest total yield was observed in control treatment at the highest density treatment (43.50 kg), whereas the highest survival was obtained by BFT treatment at a density of 25 fish/m3 (97.78 + 0.77%). Total feed used in BFT was lower than that of control treatments in particular at 50 fish/m3 density (P < 0.05) suggesting that biofloc could be continuously harvested by the fish as other source of food.
Primary Nutritional Content of Bio-Flocs Cultured with Different Organic Carbon Sources and Salinity
HAYATI Journal of Biosciences , 2010,
Abstract: Application of bio-flocs technology (BFT) in aquaculture offers a solution to avoid environmental impact of high nutrient discharges and to reduce the use of artificial feed. In BFT, excess of nutrients in aquaculture systems are converted into microbial biomass, which can be consumed by the cultured animals as a food source. In this experiment, upconcentrated pond water obtained from the drum filter of a freshwater tilapia farm was used for bio-flocs reactors. Two carbon sources, sugar and glycerol, were used as the first variable, and two different levels of salinity, 0 and 30 ppt, were used as the second variable. Bio-flocs with glycerol as a carbon source had higher total n-6 PUFAs (19.1 + 2.1 and 22.3 + 8.6 mg/g DW at 0 and 30 ppt, respectively) than that of glucose (4.0 + 0.1 and 12.6 + 2.5 mg/g DW at 0 and 30 ppt). However, there was no effect of carbon source or salinity on crude protein, lipid, and total n-3 PUFAs contents of the bio-flocs.
Nursery Culture Performance of Litopenaeus vannamei with Probiotics Addition and Different C/N Ratio Under Laboratory Condition
HAYATI Journal of Biosciences , 2010,
Abstract: Application of bioflocs technology and probiotics has improved water quality and production of Pacific white shrimp (Litopenaeus vannamei) culture. This experiment was to verify the effect of probiotic bacteria addition and different carbon:nitrogen (C:N) ratio on water quality and performance of Pacific white shrimp nursery culture. Nursery culture was carried out for 25 days in an aquarium under laboratory condition with stock density of one Post-Larvae (PL) (poslarval) per liter (24 PL/aquarium) of PL16 shrimp. Different C:N ratio resulted a significant difference on shrimp production performance. Treatment of 10 C:N ratio demonstrated the best shrimp growth (20.37 + 0.48% per day in weight and 6.05 + 0.41% per day in length), harvesting yield (1180 + 62 g/m3) and feed efficiency (121 + 6%). There was however no significant difference observed between treatments in water quality.
Wiwied Ekasari,Abdul Rahman,Sri Winarsih
Bulletin of Health Research , 2012,
Abstract: The eradication of Helicobacter pylori is important for the treatment ofpatients with infection of gastrointestinal system. However, there were only a few reports on anti-Helicobacter pylori activity of traditional medicines. The anti-H. pylori activity of n-hexane extract, chloroform extract, etanol extract and fraction of n-hexana of Lempuyang wangi (Zingiber aromaticum) was carried out by agar dilution method and chloramphenicol was used as positive control. Prior to assessment, identification of H. pylori by urease, oxidase and catalase tests was done. Only n-hexana extract assayed that inhibit the growth of H. from Malang with Minimal Inhibitory Concentration (MIC) 1.25 mg/ml and no extract or fraction of Lempuyang wangi could inhibited the growth of H. pylori from Mataram.
Communication Pattern and Conflict in Agricultural Extension
Z. Kartika Ekasari,S. Ali M. Saleh,Kamaruzaman Jusoff,Darmawan Salman
Asian Social Science , 2013, DOI: 10.5539/ass.v9n5p27
Abstract: This paper deals with communication patterns and conflict in agricultural extension. A strong assumption is that, extension could be expected to enhance agricultural and rural development, but an appropriate communication pattern and conflict in extension remains unsolved. Therefore, the objectives of this paper are three-folds, namely (a) to identify the social processes among actors in implementation of social engineering-based extension and social learning-based extension, (b) to map the communication patterns in agricultural extension, and (iii) to analyze the conflicting functions in agricultural extension. This study uses a Comparative Case Studies Method by focusing on social engineering and social learning in agricultural extension, using a Purposive Sampling Technique. The sample consists of government oficial (including extension officer), prívate sector, researcher and farmer groups. The results show that (i) social process among actors in agricultural extension based on social engineering is more project-oriented (dissociative), while social process in social learning-based extension tends to be cooperation-oriented due to the same interest in achieving goal of programs, especially skill and knowledge improvement (associative), (ii) communication in social engineering-based extension is a linier pattern (top down), while communication in social learning-based extension is using a convergent (participatory) pattern, (iii) conflict in agricultural extension based on social engineering is generally latent (hidden) and will eventually explode and impede extension, impacting group unsolidarity, while in extension based on social learning, conflict generally are on the surface (manifest), and the accommodation is one way to solve. A major implication of these findings is the stepping up of agricultural extension (based on social learning process) which becomes a push factor towards independency group in finding new innovation. The research suggests that social learning-based extension should be developed as a potential way to sustain an important role of extension in agricultural and rural development.
Phonological and Spelling Mistakes among Dyslexic and Non-Dyslexic Children Learning Two Different Languages: Greek vs English  [PDF]
Georgia Andreou, Julie Baseki
Psychology (PSYCH) , 2012, DOI: 10.4236/psych.2012.38089
Abstract: The aim of our study was to examine the phonological and spelling errors made by dyslexic and non-dyslexic children in two different languages, one (Greek, L1) much more transparent than the other (English, L2). For these purposes, our subjects (poor spellers officially diagnosed as dyslexics) composed two picture elicited narratives, one in Greek and one in English with the aid of Script Log, an online recording tool for experimental research on the process of writing. Our results showed that dyslexics generally made statistically significant (p < 0.05) more mistakes in both languages in comparison to non-dyslexics and statistically significant more phonological mistakes in English than in Greek. In addition, dyslexics made a great number of spelling mistakes in both languages, though of different nature depending on the language in which they occurred. Thus, the dyslexics in our study presented different error profiles in English and in Greek and implications are made that instruction methods should be language specific.
Exploring Second Life as a Learning Environment for Computer Programming  [PDF]
Atul Sajjanhar, Julie Faulkner
Creative Education (CE) , 2014, DOI: 10.4236/ce.2014.51010

Computer programming can be challenging for beginners because of the need to understand abstract programming concepts. In this paper, we study the use of the Second Life (SL) virtual world for learning computer programming concepts. We conduct an empirical study for learning computer programming in SL by addressing affordances of SL for experiential problem-based learning pedagogies. We present preliminary findings, the promises and the limitations of Second Life as an environment for learning computer programming.

An Exploratory Analysis of the Relationships between Personality Characteristics and the Perceptions of Virtual Merchandising  [PDF]
Al Bellamy, Julie Becker
Open Journal of Social Sciences (JSS) , 2015, DOI: 10.4236/jss.2015.33019
Abstract: This study explored the relationship between individual’s perception of presence within a virtual merchandising environment and their attitudes toward virtual shopping. Symbolic interactionism was used as the theoretical framework. Utilizing four of the Big Five personality framework, it also examined if individual’s personality affected their attitude toward virtual shopping as well as the relationship between presence and attitudes toward online shopping. The study was conducted among 81 students enrolled in an undergraduate Apparel Textiles and Merchandising Program at a university located in Southeastern Michigan. Results indicate a positive correlation between perceptions of presence and individual willingness to make purchases within an online shopping environment as well as their overall satisfaction with shopping in such an environment. Two of the personality factors from the Big Five personality framework, neuroticism and extroversion, were shown to moderate these relationships. Overall, the study confirmed the idea that individual personality traits affect one’s disposition towards shopping within a virtual environment.
Technical Adequacy of the Student Protective Factors Screening Scale (SPF-7) as a Universal Screening Tool  [PDF]
Julie Q. Morrison
Psychology (PSYCH) , 2015, DOI: 10.4236/psych.2015.67081
Abstract: Universal screening is a critical foundation for school-based prevention and early intervention. This study examined the technical adequacy of the SPF-7, an instrument designed to assist school personnel in the early identification of students at-risk for emotional and behavioral concerns. The SPF-7 differs from other measures used in identifying emotionally and behaviorally at-risk students, as the SPF-7 focuses on protective factors rather than risk factors. The results of this study suggest that the SPF-7 has adequate test-retest reliability and criterion validity, but limited inter-rater agreement. The SPF-7 is a potentially promising tool for identifying students in need of support within a multi-tiered system of increasingly intensive interventions.
Aper?u d'une anthropologie du vaccin: regards sur l'éthique d'une pratique humanitaire
Laplante, Julie;Bruneau, Julie;
História, Ciências, Saúde-Manguinhos , 2003, DOI: 10.1590/S0104-59702003000500005
Abstract: two interrelated universal practices, humanitarian medicine and immunization, pose certain ethical problems. to shed light on the matter, we present some historical reference points indispensable to an understanding of contemporary vaccination programs, focusing especially on certain anthropological issues posed by this practice as far as representations of the body and of health within populations. two examples of humanitarian vaccination practices, one used among an autochthonous population and the other among young people on the street, serve to illustrate some thoughts on management of the body and on the resistance displayed by these groups. we then propose paths to follow in re-examining the ethics of vaccination.
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