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Proceedings of the first international workshop on Kansei pp. 77 - 80
Creators : Juan Do | Motoyama Chihiro | Kai Junnko | Osa Atsushi | Miike Hidetoshi
pp. 1 - 7
Creators : Hayasaki Mineo
The development and implementation of industrial policy are essential in shaping a country’s economic landscape. It promotes industrialization, which, in turn, generates employment opportunities, enhances productivity, and diversifies the economy. the present dissertation studies the subject of industrial policy, with a particular emphasis on resource allocation and computable general equilibrium in Ghana. Chapter 2 delves into the concept of industrial policy and its implementation in Africa in general, and Ghana, in particular. First, we examine Ghana’s past experience with industrial policy implementation and the reasons for its inability to attain the desired outcomes. Subsequently, in response to the call for a return to industrial policy, we argue in favor of a renewed implementation of industrial policy in Ghana. We posit that the likelihood of success is significantly higher with the benefit of better institutions. Chapter 3 examines the subjects of firm-level productivity, productivity distribution, and resource allocation. In the first instance, we decompose labor productivity in Ghana and draw the conclusion that within-sector resource allocation primarily drives productivity growth, with structural change playing a limited role. Next, we analyze the gross allocative effect, finding evidence that resources are migrating toward sectors of lower productivity. Finally, we also examine productivity distribution through the lens of the power law distribution, establishing that firms involved in international trade exhibit higher levels of aggregation. Thus, allocating resources to such firms leads to greater productivity, thereby minimizing resource misallocation. Chapter 4 presents a dynamic recursive computable general equilibrium for Ghana, employing a Social Account Matrix (SAM) with 2015 as the benchmark year, and we conclude this chapter with a brief analysis of SAM. Chapter 5 examines several possible simulation scenarios. We build our simulations around two industrial policy strategies: labor-intensive and capital-intensive, furthermore our simulation is informed by Ghana’s industrial policy plan. We analyze various policies such as efficiency improvement, trade protection, free trade, and taxation policy. We conclude that capital-intensive industrialization would work better under a free trade policy. Moreover, we discovered that the cost of protecting labor-intensive industries is less than the cost of safeguarding capital-intensive industries. We conclude the dissertation with a discussion of the implications of our findings. we aim to provide a comprehensive discussion of the implications of our findings, as well as acknowledge the limitations of our study and propose potential avenues for further research. By doing so, we hope to contribute to the existing body of knowledge in our field and inspire future researchers to expand upon our work.
Creators : Borges Jorge Tavares
日本学術振興会磁気記録第144委員会研究会資料 Volume 137
Creators : 山本 節夫 | 栗巣 普揮 | 松浦 満 | 土井 孝紀 | 田万里 耕作
pp. 1175 -
Creators : Kawamura Kei | Miyamoto Ayaho | Nakamura Hideaki
Access to clean water has been crucial global problem, especially with climate change, increasing population, and industrial activities. As one of Malaysia’s leading economic activities, the Oil and Gas Industry generates a massive amount of wastewater called Produced Water (PW). Dissolved organics in produced water, such as organic acids and phenolic compounds, are concerning due to the possibility that they can be toxic, non-biodegradable, and have bioaccumulation properties. Conventional treatments such as adsorption, incineration, and biological treatment seem to have difficulties treating these dilute but toxic components in an economical and environmentally friendly manner. Regulations on wastewater management has also been stricter around the globe. Therefore, there is a need on a new water treatment method to treat the diluted organics in a large volume of wastewater. Membrane technology has been of interest in the water treatment technologies’ industrial and research scenes. It offers simpler configuration and maintenance. However, the application is limited by the reduction of performance over time due to fouling phenomena. Photocatalyst offer an effective method to decompose organics in an environmentally friendly manner. This study researched on photocatalytic removal of diluted organic in water and potential of biofouling reduction by deposition of AgTiO2 coating on membrane surface. In Chapter 1: Introduction, the research background and purpose of this research were discussed. At the end of this chapter, the thesis framework was shown. In Chapter 2: Preparation and characterization of TiO2 and AgTiO2 coatings; the method to prepare AgTiO2 coatings on membrane support were explained. The prepared membranes were characterized with XPS, SEM, TEM, and ICP analysis to understand the prepared coatings. Results shows that the concentration of silver deposited on the membrane can be control by the concentration of silver in the precursor (silver acetate solution) used during the photochemical deposition step. Via XPS, it was found that the state of silver prepared through this method is oxide state. In Chapter 3: Removal of dissolved organic pollutants in water by photooxidation, the photocatalytic performance of prepared membranes was studied. Decomposition of diluted formic acid was performed under UV-light, and the concentration was evaluated using UVspectrophotometer. AgTiO2 membranes show better photocatalytic activity then TiO2 membrane. The concentration of silver on the membrane was found to influence its photocatalytic performance. In relation to PW application which commonly contain high salts, influence of salt types; NaCl, MgSO4, MgCl2 and K2SO4 and concentration were studied. All salts were found to inhibit the membranes’ photocatalytic performance. In Chapter 4: Antibacterial activity of AgTiO2 membranes, the antibacterial activity towards E. coli by prepared AgTiO2 membranes were investigated. Silver dissolution from membrane was found to be significantly increased in the presence of NaCl as compared to only water. Comparing membrane with lower Ag deposition, and around 20 times higher deposition, the silver dissolution from these membranes reached almost the same value after some time. However, as the amount of silver deposited on the membrane was higher, the antibacterial performance show around four times higher than the lower silver membrane. Based on other tests performed, it was concluded that there are potential of contribution from the silver oxide deposited on the membrane surface on the antibacterial activity of the AgTiO2 membranes In Chapter 5: Antibacterial activity in filtration system, prepared AgTiO2 membrane was used to filter E. coli suspension in water. E. coli growth was found to be inhibited by short contact with silver on the coated membrane. Finally, Chapter 6: Conclusion, the thesis was summarized, and future works were proposed.
Creators : Azzah Nazihah binti che abdul rahim
Nutrient pollution is one of our most pervasive, expensive, and challenging environmental problems, according to the United States Environmental Protection Agency (EPA). Phosphorus is one of the nutrients that are essential for the growth of living organisms. However, excessive amounts of nutrients released into the environment by human activities can harm ecosystems and impact human health. In surface waters, phosphorus can contribute to an overgrowth of algae called algal "blooms" that can sicken or kill wildlife and endanger aquatic habitats. Algal blooms consume dissolved oxygen in the water, leaving little or no oxygen for fish and other aquatic organisms. Algal blooms can harm aquatic plants by blocking the sunlight they need to grow. Some algae produce toxins and encourage the growth of bacteria that can make people sick who are swimming or drinking water or eating contaminated fish or shellfish. Phosphorus is often a major limiting nutrient freshwater system. Consequently, many of the wastewater treatment plant discharged into freshwater systems such as lakes, ponds, and rivers have phosphorus discharge limits. In an attempt to prevent harmful environmental effects of excess phosphorus, several techniques have been designed to remove phosphorus from wastewater. These techniques range from adsorption and precipitation to enhanced biological phosphorus removal and constructed wetlands. Biological phosphorus removal (BPR) was first used at a few water resource recovery facilities in the late 1960s. A common element in EBPR implementation is the presence of an anaerobic tank (no nitrate and oxygen) before the aeration tank. In the next aerobic phase, these bacteria can accumulate large amounts of polyphosphate in their cells and phosphorus removal is said to be increased. The group of microorganisms that are largely responsible for P removal are known as the phosphorus accumulating organisms (PAOs). One of the options to remove phosphorus is to utilize bacteria from nature, besides being easy to obtain and inexpensive. The application of bacteria from sediment and seawater was able to reduce phosphorus in wastewater. In this study, for screening salt-tolerant phosphorus accumulating organisms (PAOs) and investigating the P release and uptake of the organisms in saline wastewater. The samples used were sediment and seawater from Yamaguchi Bay, Yamaguchi, Japan. Sediment and seawater added 150 mL of artificial saline wastewater with media (anaerobic media). The samples were then cultured and given feed media every three hours day at 25 °C and shaken at 140 rpm. The hydraulic retention time of the cultivation was 16 h and 8 h under anaerobic and aerobic conditions, respectively. 10 sponges made of polyurethane with dimensions of 2 cm were put in Erlenmeyer flasks and was used as a bio-carrier surface for microorganisms to adhere to. Water was passed over the sponge surface to acclimatize the microorganisms growing outside the sponge as well as within its pores, ensuring sufficient growth surface. The cultivation duration was 112 days. Batch experiments were conducted over 98 days in solutions with a salinity of 3.5% and P concentrations of 1, 5, 10, and 20 mg-P/L. The P-uptake ability of microorganisms increased by increasing P concentration from 1 to 20 mg-P/L. A high P removal percentage with an average of 85% was obtained at 10 mg-P/L after day 56. The uptake and release of P were observed in saline wastewater, signifying that salt-tolerant PAOs could grow in the saline solution. Bacterial screening by isolation and sequence analysis using 16S rRNA demonstrated that two cultivated strains, TR1 and MA3, had high similarity with Bacillus sp. and Thioclava sp. EIOx9, respectively. The colony morphology analysis showed that the colonies of TR1 were rod-shaped, milky-colored, round, shiny-viscous, smooth with a defined margin, while colonies of MA3 were cream-colored with smooth surfaces and raised aspect. The TR1 was gram-stain-positive with approximately 6-10 μm long and 1.2 μm wide cells, and MA3 was gram-stain-negative with about 0.9 μm long and 0.5 μm wide cells. The results demonstrated the involvement of Bacillus sp., and Thioclava sp. in the release and uptake of P, owing to their ability to grow in saline wastewater. Furthermore, Bacillus sp. (TR1) and Thioclava sp. (MA3) were assessed for their abiotic adaptability and phosphorus removal efficiency in saline wastewater. The effects of abiotic factors such as carbon source, pH, temperature, and salinity on bacterial growth were examined through a series of batch experiments. Both bacteria used carbon sources such as glucose, sucrose, and CH3COONa for their growth. The pH study indicated that Bacillus sp. (TR1) preferred the pH range of 6 8 and Thioclava sp. (MA3) preferred the pH range of 6-9. Bacillus sp. favorably multiplied in the temperature range of 25- 40 °C, while 25 35 °C was preferred by Thioclava sp. Salinity range of 0% 10% was favorable for TR1, with optimum growth observed at 3.5% 5%, and Thioclava sp. (MA3) preferred the salinity range of 1% 10% with optimal growth at 4%, but was absent in non-saline water. Bacillus sp. and bacterial combination (TR1 and MA3) showed similar values for phosphorus removal efficiency (100%) at 1.0 mg-P/L total P compared to Thioclava sp. (38.2%). The initial phosphorus concentration of 2.5 mg-P / L showed a slightly higher 72.35% P removal efficiency compared to the individual strains. However, phosphorus removal did not increase, but showed a downward trend with increasing at initial phosphorus. The combination possibly built a synergistic activity between the individual strains to remove phosphorus. The results demonstrated that when used individually, Bacillus sp. showed a reasonably high phosphorus removal ability than Thioclava sp., and exhibited good synergy when used in combination to remove phosphorus from saline wastewater.
Creators : Hasanah Rafitah
 本研究では、小児期(幼児期、学童期、青年期)の生活習慣、遺伝要因と肥満との関連を調査し、肥満予防のための公衆衛生的アプローチを検討した。食物繊維摂取が学童期の子どもの肥満および血圧、血中脂質パラメーターに及ぼす影響を明らかにすること(調査1:10~11歳の横断研究)、FT0遺伝子多型が幼児期から青年期の体格変化に及ぼす影響を明らかにすること(調査2:3歳、10歳、13歳に渡る縦断研究)、さらに、学童期から青年期にかけて身体活動がFT0遺伝子多型と体格変化に及ぼす影響を明らかにすること(調査3:13歳、18歳に渡る縦断研究)、を本研究の目的とした。  調査1では、学童期の食物繊維摂取は肥満およびコレステロール高値のリスク低減に有効であることが示唆された。  調査2では、幼児期から学童期にかけてFT0遺伝子の影響が強く表れ、中学生の年代になるとこの影響は逆に減弱し、部活動等が始まるこの時期の身体活動の影響が関連している可能性があることが推測された。  調査3では、青年期で、身体活動量が多いほどBMIの増加を弱め、FT0遺伝子多型の影響を減弱させた。  本論文の構成は5章からなる。 第1章では、緒言として、研究の背景と本研究の目的を述べる。 第2章では、食物繊維摂取が学童期の子どもの肥満および血圧、血中脂質パラメーターに及ぼす影響を検討した。 第3章では、FT0遺伝子多型が幼児期から青年期の体格変化に及ぼす影響を検討した。 第4章では、身体活動がFT0遺伝子多型と体格変化に及ぼす影響について検討した。 第5章では、結言として、本研究のまとめと今後の研究の方向性、今後の展望を述べた。
Creators : 木村 圭子
Ferrites : proceedings of the eighth International Conference on Ferrites, 2000 (ICF 8) pp. 491 - 493
Creators : Yamamoto S. | Horie S. | Tanamachi N. | Kurisu H. | Matsuura M. | Isida K. Publishers : Japan Society of Powder and Powder Metallurgy
Wild Silkmoths '88 pp. 73 - 78
Creators : Kobayashi Jun Publishers : International society for Wild Silkmoths
Creators : Kishimura Susumu | Ishimoto Naokuni | Kawado Yushi | Arifuku Satoshi | Kinsei Masayuki | Saiki Hideto
Creators : 石口 絵梨
It is important to anticipate problems such as a large amount of spring water that occurs during shafts construction and maintenance problems such as concentration of lining cracks after shafts construction in advance, and to carry out construction in a rational manner. Crack tensor from the rock mass information (cracks, strength) obtained by the construction of the shafts of the Horonobe Underground Research Laboratory of the JAEA, aiming at the selection of support and the implementation of spring water countermeasures. Based on the theory, the research results were summarized with the aim of evaluating the water hydraulic conductivity of the rock mass during shafts construction and the deteriorated condition of the lining after shafts construction, and establishing a simple prediction method for these. Chapter 1 summarizes the current state of rock mass geological observation and lining maintenance in the shafts, the water permeability coefficient of the rock mass, and the past domestic and overseas studies on the deterioration state of the lining, and the hydraulic conductivity of the rock mass using the rock mass information. The purpose of this study was clarified with the task of evaluating the deterioration state of the lining and establishing these simple prediction methods. In Chapter 2, crack tensor theory and stereology (statistical geometry) are used using information (length, direction, opening width) of rock cracks during shafts construction. By applying the concept, the three-dimensional permeable tensor was estimated accurately. Then, when the hydraulic conductivity obtained from the three-dimensional hydraulic tensor and the hydraulic conductivity based on the result of the in-situ permeability test using the deep borehole near the shafts were compared, it was clarified that they were in good agreement. A high correlation was obtained between the crack frequency obtained by dividing the total length of the cracks obtained in the shafts construction by the evcavation surface area and the hydraulic conductivity obtained from the three-dimensional hydraulic tensor. Therefore, we proposed a method to easily predict the hydraulic conductivity of rock from the frequency of cracks. The obtained prediction formula targets the depth at which three cross sections orthogonal to each other can be obtained on the rock crack observation surface, but the prediction formula was also obtained at a depth where three cross sections orthogonal to each other cannot be obtained. Comparing the hydraulic conductivity of the rock mass and the hydraulic conductivity based on the in-situ permeability test results, it was clarified that they are in good agreement. In Chapter 3, the orientation dependence of the earth pressure is recognized in the underground environment of the Horonobe Underground Research Center, and it is the major principal stress direction in the shafts of the underground Laboratory. Cracks have occurred on the lining wall surface in the east-west direction. However, the lining cracks in the shafts at that point may depend not only on the orientation dependence of the ground pressure, but also on the rock cracks on the back surface of the lining, the ground cover and the rock strength. If a prediction formula for predicting lining deterioration can be created in consideration, it will be useful information for countermeasures during construction, and based on the crack tensor calculated based on the information on cracks, from the rock crack tensor and rock strength. I proposed a method to estimate the deterioration condition of the lining. The estimated value of the crack tensor regarding the deterioration of the lining using the obtained prediction formula and the measured value calculated from the information of the lining crack, assuming that the margin of error due to the relative error is 0.1, the estimated value and the measured value are well one. Im adei t clear that Ia md oing it. In Chapter 4, aiming at selection of rational support for shafts extension of underground Research Laboratory planned in the future and implementation of spring water countermeasures. Ip roposed ac onstruction management system that applies the crack tensor prediction method for rock hydraulic conductivity during shafts construction and deterioration of lining after shafts construction. In the future, in order to select more rational support and implement measures against spring water, the rock mass information (cracks and rock mass strength) acquired during shafts construction will be obtained using the prediction formulas established in Chapters 2 and 3. By predicting the hydraulic conductivity of the rock and the crack tensor related to the deterioration of the lining, and reflecting it in the measures against spring water in the rock mass and the measures against the deformation of the lining, it can be expected to contribute to the reduction of maintenance costs. Chapter 5 summarizes the research results in each chapter and raises future issues for conclusion.
Creators : Yamasaki Masanao