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Analysis of Indonesian Tuna Fish Export to Twelve Main Destination Countries: A Panel Gravity Model
Wayan Edy Darma PUTRA(Wayan Edy Darma PUTRA ),NASRUDIN(NASRUDIN ) 한국유통과학회 2023 Asian Journal of Business Environment (AJBE) Vol.13 No.1
Purpose: This study purposes to analyze the determinants of the volume of Indonesian tuna exports. Research design, data and methodology: The framework was developed from the gravity model for trade, which was expanded with additional variables of competitiveness, exchange rate, and industrial share of the destination country. The data sources used in this study are UN Comtrade and the World Bank. The data used is yearly data from 12 countries in 2001-2019. The scope of the study is limited to exports to the twelve main export destinations. Panel data regression analysis is used to determine the factors that affect the volume of Indonesian tuna exports. Results: The results show that according to the theory, Indonesia's GDP has a positive effect and economic distance has a negative effect on the volume of the exports. Meanwhile, the GDPs of the destination countries are not proven to have a positive effect. However, the higher the industrial share in the country, the higher the export volume tends to be. Conclusions: The conclusion obtained from this study is that Indonesia's GDP, economic distance, real exchange rate, industrial GDP share of the destination country, and the RCA index affect the volume of Indonesian tuna exports.
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Radial Variation in Selected Wood Properties of Indonesian Merkusii Pine
( Wayan Darmawan ),( Dodi Nandika ),( Britty Datin Hasna Afaf ),( Istie Rahayu ),( Dumasari Lumongga ) 한국목재공학회 2018 목재공학 Vol.46 No.4
Merkusii pine wood (Pinus merkusii) was extensively planted throughout Indonesia, where it is only indigenous in northern Sumatera, by the Dutch during colonial times. The demand for this wood species, especially in the domestic market, has increased notably, despite its limited durability regarding decay resistance. The purpose of this study was to investigate the occurrence of juvenile and mature wood on merkusii pine and to analyze its radial features from pith to bark based on density, shrinkage, static bending in modulus of rupture and modulus of elasticity, fiber length, microfibril angle, and durability. A segmented modeling approach was used to find the juvenile-mature transition. The graveyard test was performed to characterize the termite resistance from pith to bark of merkusii pine. The maturations were estimated to start at radial increments of 15 cm from the pith by fiber length and of 12 cm from the pith by microfibril angle. The projected figures for the proportion of juvenile wood at breast height were around 65%. The results also indicate that the pine wood was 0.52 g/㎤ in density, 1.45 in coefficient of anisotropy, which indicates its good stability, 7597 MPa in modulus of elasticity, and 63 MPa in modulus of rupture. Natural durability against subterranean termite of the merkusii pine wood was rated to be grade 4 to 0 from pith to bark. However, after being treated by Entiblu and Enborer preservatives, its rating increased to grade 10 to 9.
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Wayan Kasa, I Asian Australasian Association of Animal Productio 1998 Animal Bioscience Vol.11 No.3
An experiment has been carried-out on physiological responses in Saanen, Anglo Nubian and Toggenburg goats at different body weights and feed intakes during treadmill exercise at $30{^{\circ}C}$ environmental temperature (ET). The results showed that respiration rate (RR) was significant between time ${\times}$ breed interaction (p < 0.01), with values for the Anglo Nubian being least, while the Saanen was intermediate. With time, RR differed significantly, and after 1 h the respective RR were 238, 221 and 303/min in the Saanen, Anglo Nubian and Toggenburg. With time the rectal temperature (Tr) increased gradually and after 1 h exercise mean values were 40.8, 41.3 and $40.7{^{\circ}C}$ in the Saanen, Anglo Nubian and Toggenburg respectively. Rump skin temperature (RTs) values differed significantly between Anglo Nubians and Toggenburgs, with the differences averaging 0.3, 0.6, 0.4 and $0.4{^{\circ}C}$ after 15, 30, 45 and 60 min exercise respectively. With breed, highest loin skin temperature (LTs) values were in the Anglo Nubian, with an overall mean of $37.9{^{\circ}C}$ (p < 0.05).
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Wayan Weda Asmara Dewi,Fitria Avicenna,Maria Magdalena Meideline 충남대학교 아시아여론연구소 2020 Asian journal for public opinion research Vol.8 No.2
In Indonesia, concern about environmental protection is increasing. Thus, companies not only adjust their products but also create promotion strategies with environmentally friendly messages, called green marketing. This study identifies the effect of green marketing on purchase intentions. A quantitative method with an explanatory design was conducted. Data was gathered online. In this study, the population was @InnisfreeIndonesia Instagram followers. Thus, a direct message with the survey invitation was sent to randomly selected Instagram followers. Additional followers were invited daily for about a month until 100 responses were collected. The majority of respondents were Indonesian females, age 21-25. The results show that green products partially influence purchase intentions. Once consumers consider environmental friendly issues before buying a skin care product, they may identify whether the product is toxic-free, environmentally friendly, and holds a certification that identifies it as such. Thus, potential consumers tend to seek information to set expectations about the product they want to buy, prioritize them over other products, and to refer the product to others.
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질산으로 표면처리한 대나무 활성탄을 첨가한 폴리술폰 담체의 세슘제거 효율 규명
Ni Wayan Sukma Taraning Rahayu,김선희,탁현지,김경태,이민희 대한자원환경지질학회 2020 자원환경지질 Vol.53 No.5
The cesium (Cs) sorption characteristics of a bead-type polysulfone carrier contained HNO3-treated bamboo charcoal (3 – 5 mm in diameter) in water system were investigated and its Cs removal efficiency as an adsorbent from water was also identified by various laboratory experiments. From the results of batch sorption experiments, the bead-type polysulfone carrier with only 5% HNO3-treated bamboo charcoal (P-5NBC) represented the high Cs removal efficiency of 57.8% for 1 hour sorption time. The Cs removal efficiency of P-5NBC in water after 24 hours reaction maintained > 69% at a wide range of pH and temperature conditions, attesting to its applicability under various water systems. Batch sorption experiments were repeated for P-5NBC coated with two cultivated microorganisms (Pseudomonas fluorescens and Bacillus drentensis), which were typical indigenous species inhabited in soil and groundwater. The Cs removal efficiency for two microorganisms coated polysulfone carrier (BP-5NBC) additionally increased by 19% and 18%, respectively, compared to that of only P-5NBC without microorganisms coated. The average Cs desorption rate of P-5NBC for 24 h was lower than 16%, showing the Cs was stably attached on HNO3-treated bamboo charcoal in so much as its long-term use. The maximum Cs sorption capacity (qm) of P-5NBC calculated from the Langmuir isotherm model study was 60.9 mg/g, which was much higher than those of other adsorbents from previous studies for 1 h sorption time. The results of continuous column experiments showed that the P-5NBC coated with microorganisms packed in the column maintained > 80% of the Cs removal efficiency during 100 pore volumes flushing. It suggested that only 14.7 g of P-5NBC (only 0.75 g of HNO3 treated bamboo charcoal included) can successfully clean-up 7.2 L of Cs contaminated water (the initial Cs concentration: 1 mg/L; the effluent concentration: < 0.2 mg/L). The present results suggested that the Cs contaminated water can be successfully cleaned up by using a small amount of the polysulfone carrier with HNO3-treated bamboo charcoal.
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Dewi, Wayan Weda Asmara,Avicenna, Fitria,Meideline, Maria Magdalena Center for Asian Public Opinion ResearchCollaborat 2020 Asian journal for public opinion research Vol.8 No.2
In Indonesia, concern about environmental protection is increasing. Thus, companies not only adjust their products but also create promotion strategies with environmentally friendly messages, called green marketing. This study identifies the effect of green marketing on purchase intentions. A quantitative method with an explanatory design was conducted. Data was gathered online. In this study, the population was @InnisfreeIndonesia Instagram followers. Thus, a direct message with the survey invitation was sent to randomly selected Instagram followers. Additional followers were invited daily for about a month until 100 responses were collected. The majority of respondents were Indonesian females, age 21-25. The results show that green products partially influence purchase intentions. Once consumers consider environmental friendly issues before buying a skin care product, they may identify whether the product is toxic-free, environmentally friendly, and holds a certification that identifies it as such. Thus, potential consumers tend to seek information to set expectations about the product they want to buy, prioritize them over other products, and to refer the product to others.
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The Cesium Sorption Characterictics of Polysulfone Carrier with the HNO3 Treated Bamboo Charcoal
( Ni Wayan Sukma Taraning Rahayu ),( Jinkyun Lee ),( Taehyoung Kim ),( Minhee Lee ) 대한지질공학회 2019 대한지질공학회 학술발표회논문집 Vol.2019 No.2
The cesium (Cs) has been known as a dangerous radionuclide for human health and ecosystem due to its high solubility. Adsorption is considered as one of the effective Cs removal treatment processes. In this study, the polysulfone carrier with HNO<sub>3</sub> treated bamboo charcoal was used to remove Cs from solution and its removal efficiency was calculated based on results of batch adsorption experiments with different conditions such as carrier dosages, contact times, pH, and temperature. The Cs concentration before and after the experiment was analyzed on ICP/OES to calculate the Cs removal efficiency. Scanning Electron Micrograph (SEM) analysis was also performed to visualize the structure of the carrier. From results, the Cs removal efficiency generally increased with the increase of both the bamboo charcoal amount in the carrier and the carrier amount in solution. The Cs removal efficiency reached to 72.67% with the carrier dosage 1.2g per 100 mL of solution for 6 for sorption experiment. The high Cs removal efficiency was maintained at the wide range of pH and the highest removal efficiency was shown at pH of 5-7 in solution. The Cs removal efficiency was maintained around 70% at the temperature range of 5-30°C. SEM analyses presented that the bamboo charcoal included polysulfone carrier has complicated porous structures where the Cs was sorbed as a form of a solid phase. This study suggests that polysulfone carrier with HNO<sub>3</sub> treated bamboo charcoal is available to remove Cs from water system under a wide range of pH and temperature conditions.
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