The effect of chemical treatment, fibre length, fibre content and injection moulding parameters to uv irradiation resistance of oil palm fibre reinforced composites

There are many types of polymer used in engineering materials expose to UV irradiation, such as automotive parts (car body, bumper, dashboard etc.) which can cause material degradation. Some polymers are used in pure polymer and some of them in composite material. This study has investigated the composite material degradation. In this study, polypropylene was used as a matrix of the composite material samples, while oil palm fibre as reinforcement. The effect of the fibre length, fibre content, fibre treatment, coupling agent and injection moulding parameter to ultraviolet (UV) light resistance of this composite and also the optimum setting of them were investigated. The UV resistance was examined via the change of mechanical properties after UV exposured in the UV accelerated weathering tester. The Linear regression models were generated for tensile strength, strain at maximum stress, break stress, break strain and Charpy Impact strength based on six different UV exposure time i.e.: 0, 96, 336, 504, 1008, and 1512 hours. The significance of the regression models were tested by Analysis Of Variance (ANOVA) and verified by two expose time i.e: 168 and 672 hours. This study found that all of the mechanical properties decrease after UV irradiated. The largest property decrease was break strain of the samples, which was decrease in the range 44.54% to 79.21% after 1512 hours UV irradiated. The lowest decrease was break stress in the range 27.38 % to 63.82%. It was also found in this study that fibre content, and UV irradiation time, significantly affect all properties. Coupling agent and alkali treatment significantly affect all properties except strain at maximum stress. Whereas fibre length and injection moulding parameter only significantly affect the Impact strength of the specimens. All of the regression models are significant which are signed by the p value of each of regression models were lower than 0.05. The equation for predicting the lifetime of UV exposed of oil palm fibre reinforced composite have been generated. The lifetime UV irradiated specimen can be predicted using this equation

Pengaruh Kepemimpinan Transformasional Terhadap Kinerja Karyawan Pada Pt.Bank Mega Syariah Palembang

This study aimed to examine the effect of transformational leadership to employees performance at PT Bank Mega Syariah Palembang. The sample used in this study were 39 employees with sensus method. Hypothesis tested using linear regression analysis with program assistance SPSS 17.0. The test results stated that the contribution of transformational leadership and employee performance at 8,1%. While the remaining 91,9% is influenced by other variables that is not included in this study. The test results indicate that the value of significantly smaller than 0,05. The hypothesis test states that transformational leadership is having positive and significant effect on the performance of employees at PT Bank Mega Syariah Palembang

THEMATIC STRUCTURE SHIFT FOUND IN ENGLISH - INDONESIAN TRANSLATION OF OBAMA’S SPEECH IN INDONESIA UNIVERSITY

This study analyzes types of themes and theme shifts in the English - Indonesian translation of Barrac Obama’s speech in Universitas Indonesia. The result shows that topical theme dominates the entire texts 71.43% in ST and 79.64% in TT. Interpersonal theme is the least theme found in both texts. Most topical themes are in participants, followed by circumstance and process. The textual theme in both texts is adjunct conjunctive. The interpersonal themes are modals. Most of the themes are considered as equivalent. The theme shift occurs through three processes: by changing the grammatical function within the theme by adding more themes and by deleting themes

Descriptive Study On Destination Image Perception By The Surabaya Domestic Tourists

Tourist destinations is an important sector role inthe economy. For that a tourist destination should be handled properly in order to meet the expectations of tourists and the community. Indicators that can be used to find out how the performance of tourist destinations is the image of tourism destinations. This study aims to describe how the image of tourists to the city of Surabaya as a tourist destination. Dimensions are used to measure the perceptions of tourists are (1) environmental beauty and convenience, (2) the country’s citizens,(3) place and architectural structure, (4) shopping and tourist accommodation, and (5) local culture and cuisine. The results showed that respondents are divided into 2 based on the perception of the destination image Surabaya city. The most positive image in the dimension of the shopping and accommodation, and the lowest image is the structure of space and architecture. Tourists give the perception that the city of Surabaya has a shopping tour of interesting places to visit, but the historic sights and natural attractions are still not yet become an attractive option to visit

STUDY ON THE STUDENTS LEARNING STRATEGIES IN \ud LISTENING COMPREHENSION AT ENGLISH DEPARTMENT OF UMM

As one of the components of language teaching, listening takes a longest part among other \ud language skills. It becomes a starter to learn language. Students cannot be able to interpret \ud message accurately and creatively if their listening is not good. It means that listening plays an \ud important role in teaching learning process. Therefore, this research is needed to conduct in \ud identifying the learning strategies in order to increase the result of students listening \ud comprehension. \ud The purposes of this study were to know the kinds and the most dominant learning strategies \ud used by students in listening comprehension at English department of UMM. \ud This study used descriptive qualitative research design. The population taken for this study were \ud the second semester students of English department of UMM in which they took listening two. \ud The total numbers of them were 263 students. The writer applied simple random sampling to \ud take the sample. In selecting the sample, it involves defining the population, identifying each \ud member of population and selecting individual randomly for the sample. The writer took 53 \ud students as the samples. The instruments used in this study were questionnaire and interview. \ud The result of this study showed that the learning strategies used by students in listening \ud comprehension at English department of UMM were cognitive strategies, metacognitive \ud strategies and socioaffective strategies. While the most dominant strategies used by students of \ud listening comprehension at English department of UMM was cognitive strategies

PEMANFAATAN BEKATUL SEBAGAI BAHAN DASAR NATA DENGAN BERBAGAI KONSENTRASI GULA PASIR DAN KONSENTRASI STARTER Acetobacter xylinum

Nata is one of fermentation diet result created by acetobacter xylinum bacteria. Nata variant wellknown by society is nata de coco made from coconut water. Outside the coconut water, nata could also made from another source, one of them by using rice waste, called bran. The research aimed to find out the influence of various sand sugar to nata quality from bran, finding the influence of various Acetobacter xylinum starter concentrate to nata quality from bran, and also find out the combination influence of various sand sugar concentrate to the nata quality from bran. \ud The research form was true experiment. To arrange the treatment in field, the research used complete random design, the design used to measure nata quality and organoleptic, used factorial arrangement with two factors and two repetition. Factor 1 was sand sugar concentrate addition with 4 level (6%, 8%, 10%, dan 12%) and factor II was concentrate of Acetobacter xylinum starter with 4 levels (5%, 10%, 15%, dan 20%). Sampling technique used Simple Random Sampling. Research indicator was nata quality concisted of thickness, water rate, wet weight, reduction sugar rate, fiber rate, and nata organoleptic (texture, color, and aroma). The research was done in October 10th 2009 to December 11th 2009 in Biology and Chemical Lab University of Muhammadiyah Malang. Data found was analyzed by 2 factor Anava and continued with Duncan’s test with significance rate 5%. \ud The result showed that sand sugar concentrate and Acetobacter xylinum starter addition influenced the quality difference of nata (thickness, water rate, and fiber rate). But it wasn’t influenced the difference of wet weight, reduction sugar, texture, color and aroma of nata resulted. The best treatment to make nata thickness from bran was the combination of G4S4 (sand sugar concentrate addition 12% and Acetobacter xylinum starter concentrate 20%)

Building Materials Composition Influence to Sound Transmission Loss STL Reduction

Abstract. The development of the airport always causes the noise impact to the surrounding environment.1 Housing close to the airport will be annoyed by the aircraft noise, especially if the building is not added by absorber building materials. Housing lay out towards the runways as noise sources is also an aspect that should be considered. This research resulted building models equipped by simple material compositions that had capability in reducing the airport noise optimally. The decrease of the noise level found out from the research is caused by the value of Sound Transmission Loss (STL) of the building materials composition. The models of housing are laid out with a number of specific orientation angles towards the runway and resulted values of the highest noise level reduction

THE INFLUENCE OF ENVIRONMENTAL, SOCIAL AND GOVERNANCE (ESG) DISCLOSURE ON FIRM RISK (Empirical Study on Non-Financial Companies Listed in Indonesia Stock Exchange)

This study aims to analyze the influence of Environmental, Social and Governance (ESG) disclosure on firm risk. ESG disclosure covers the environmental, social and governance issues considered by stakeholders to reflect a company’s accountability. This study used the indicators of GRI-G4 indices to measure the scores of ESG disclosure. Firm risk is represented by total risk which measured by calculating the standard deviation of daily stock returns to reflect the stock volatility. Total risk categorized into systematic risk which measured by calculating the market beta and idiosyncratic risk which measured by calculating the standard deviation of residuals. The measurement of risk in this study based on the Sharpe’s CAPM model. The research object of this study was non-financial companies listed in Indonesia Stock Exchange (IDX) that issued sustainability report over the period 2014-2016. This study used purposive sampling method in determining the sample and this study obtained 36 samples of companies as well as 90 firm-year observations. The data used in this study were secondary data which collected by performing documentation study and literature study. The data then tested by using multiple linear regression as analysis method in this study. The findings of this study showed that environmental and social disclosures were significantly negatively influenced the total risk, systematic risk, and idiosyncratic risk. However, the governance disclosure just significantly influenced the total risk and insignificantly influenced the systematic risk and idiosyncratic risk. Nevertheless, the governance disclosure has a positive influence on all of the risk measure

PERANAN PRAKTEK-PRAKTEK MANAJEMEN MANUSIA PADA KINERJA OPERASIONAL : PENGENALAN PADA LINTAS NEGARA DAN INDUSTRI

The human resource management practices strategically become an attractive topic to be reviewed, from some research that had been done before, it was known that human resource management practices had great influences to the whole organizational performance, but only a few reviewed especially the role of human resource management practices in correlation with operational management, and to generalize the findings across countries and industries. Actually the success of some business decisions (especially related with globalization and acquisition) necessitates recognition and reconciliation of the differences among human resource management practices in different countries and industries. The review of human resource management practices in this paper used Pfeffer's proposal about seven HRM practices in the context of country and industry, where each of this element of HRM practices had a role towards operational practices. The review was found that seven HRM practices proposed by Pfeffer had a great role to increase operational performance and could be formulated into one ideal system to be performed in the context of country and industry

Improving Speaking Ability Through Community-based Learning

Speaking ability is very important to have good communication, especially in International communication. The English learners should have this ability and they must focus the learning on speaking skill. The learners\u27 failures in learning speaking were caused by the inappropriateness of the strategy or method learning. It happened to them unconciously. It means they are not aware of making inappropriateness in the method. The appropriate method should be applied in learning so that the success can be achieved. To realise the success in improving speaking ability can be done by using community-based learning method. The learning communities should be made to conduct the community-based learning. In these learning communities, the process of learning speaking can be appliead like it is in real communities. Real-like communities makes the learning process run well, because the condition is like the reality. The good process in learning makes the learners feel in the real society and feel enjoyable and confortable. If the learners have good feeling, they will learn speaking eagerly and spiritfully, so they will be succesfull in learning, especially speaking. Key words: Speaking, community-based, and learnin