• Title/Summary/Keyword: and Re

Search Result 12,811, Processing Time 0.045 seconds

Assessing the "Renewable Energy 2040" target: Roadblocks and recommendations for the Philippines

  • Gabis, Mary Grace V.
    • Bulletin of the Korea Photovoltaic Society
    • /
    • v.6 no.1
    • /
    • pp.35-44
    • /
    • 2020
  • In line with the goal of achieving a low carbon future, the Philippines made an aspirational target which aims to increase the total installed capacity coming from renewable energy (RE) to at least 20,000 MW by 2040. The country's RE sector has progressively advanced over the years following the enactment of its comprehensive RE Law in 2008. Among other RE technologies, solar achieved the highest installation growth from 2008 to 2018. The paper seeks to assess whether the Philippines' RE target by 2040 is achievable in terms of the current status and future outlook for RE. Major roadblocks that hamper RE development are identified and discussed, including some recommendations for policy-making and energy planning.

Labelling with Rhenium-188 (Rhenium-188 방사성 의약품)

  • Choe, Yearn-Seong
    • 대한핵의학회:학술대회논문집
    • /
    • 1999.05a
    • /
    • pp.193-195
    • /
    • 1999
  • There is considerable interest in $^{188}Re$ due to its favorable properties as a therapeutic radionuclide $^{188}Re$ and $^{99m}Tc$ act as a matched pair because of their similar chemical properties, and therefore methods of labeling with $^{99m}Tc$ can be applied to the labeling with $^{188}Re$. With appropriately chosen agents as carriers of $^{188}Re$, the labeling can be readily carried out using $^{188}ReO_4^-$ in the presence of a reducing agent. $^{188}Re$ radio-pharmaceuticals based on $^{99m}Tc$ complexes have been synthesized and are currently being studied for clinical use. Some of them are shown to be suitable for therapeutic use and promising for radiotherapy in nuclear medicine.

  • PDF

Willingness-to-pay for the Use of Renewable Energy by Experts (신재생에너지분야 전문가의 지불의사액 조사 연구)

  • Lim, So-Young;Heo, Eun-Nyeong
    • New & Renewable Energy
    • /
    • v.4 no.4
    • /
    • pp.44-49
    • /
    • 2008
  • This study uses contingent valuation method (CVM) to elicit willingness to pay monthly for electricity or heating produced by renewable energy (RE). The experts who participated in the conference of the Korean Society for New and Renewable Energy in May of 2008 were asked to answer the questionnaires: how much would you be willing to pay monthly to receive electricity (or heating) generated by RE? We find some evidence that the respondents have higher willingness to pay for RE electricity than RE heating even if the average electric bills were lower than the heating bills. The respondent who belongs to a large family and has a good opinion of RE tends to show high willingness to pay for both RE electricity and RE heating.

  • PDF

A Structural Equation Model on Social Re-Adjustment of Stroke Patients: Based on Roy's Adaptation Model (뇌졸중 환자의 사회재적응 구조모형: Roy의 적응모형에 기반하여)

  • Kim, Jungmi;Kim, Hwasoon
    • Journal of Korean Academy of Nursing
    • /
    • v.53 no.4
    • /
    • pp.480-495
    • /
    • 2023
  • Purpose: This study aimed to develop and test a structural equation model on social re-adjustment of individuals with stroke based on a literature review and Roy's adaptation model. Methods: This study involved 321 participants who had a stroke and visited the outpatient department after discharge. The hypothetical model was developed based on Roy's adaptation model and a comprehensive review of previous literature on the topic. The model comprised four exogenous variables (neurological damage, gender [man], age, and social support) and five endogenous variables (activities of daily living, acceptance of disability, depression, rehabilitation motivation, and social re-adjustment). The data were analyzed using SPSS Windows software version 22.0 and AMOS 23.0. Results: Out of 28 research hypotheses, 18 were supported, and they indicated approximately 64% probability of social re-adjustment. Social re-adjustment is directly and significantly affected by age, social support, activities of daily living, and depression. Social re-adjustment is indirectly affected by neurological impairment, gender (men), age, social support, and rehabilitation motivation. Conclusion: Continuous assistance and care should be provided for individuals with disabilities caused by sudden neurological damage to facilitate gradual improvement in their social re-adjustment. To enhance social re-adjustment, especially among older adults, newly developed interventions should focus on improving their activities of daily living, preventing depression, and enhancing support from family and healthcare personnel.

The high thermal stability induced by a synergistic effect of ZrC nanoparticles and Re solution in W matrix in hot rolled tungsten alloy

  • Zhang, T.;Du, W.Y.;Zhan, C.Y.;Wang, M.M.;Deng, H.W.;Xie, Z.M.;Li, H.
    • Nuclear Engineering and Technology
    • /
    • v.54 no.8
    • /
    • pp.2801-2808
    • /
    • 2022
  • The synergistic effect of ZrC nanoparticle pining and Re solution in W matrix on the thermal stability of tungsten was studied by investigating the evolution of the microstructure, hardness and tensile properties after annealing in a temperature range of 1000-1700 ℃. The results of metallography, electron backscatter diffraction pattern and Vickers micro-hardness indicate that the rolled W-1wt%Re-0.5 wt% ZrC alloy has a higher recrystallization temperature (1600 ℃-1700 ℃) than that of the rolled pure W (1200 ℃), W-0.5 wt%ZrC (1300 ℃), W-0.5 wt%HfC (1400-1500 ℃) and W-K-3wt%Re alloy fabricated by the same technology. The molecular dynamics simulation results indicated that solution Re atoms in W matrix can slow down the self-diffusion of W atoms and form dragging effect to delay the growth of W grain, moreover, the diffusion coefficient decrease with increasing Re content. In addition, the ZrC nanoparticles can pin the grain boundaries and dislocations effectively, preventing the recrystallization. Therefore, synergistic effect of solid solution Re element and dispersed ZrC nanoparticles significantly increase recrystallization temperature.

Systematic influence of wind incident directions on wind circulation in the re-entrant corners of high-rise buildings

  • Qureshi, M. Zahid Iqbal;Chan, A.L.S.
    • Wind and Structures
    • /
    • v.22 no.4
    • /
    • pp.409-428
    • /
    • 2016
  • The mechanical and aerodynamic effect of building shape plays a dominate role in the pedestrian level wind environment. These effects have been presented in numerous studies and are available in many wind codes. However, most studies have focused on wind flow around conventional buildings and are limited to few wind directions. The present study investigated wind circulation in the re-entrant corners of cross-shaped high-rise buildings from various wind directions. The investigation focused on the pedestrian level wind environment in the re-entrant corners with different aspect ratios of building arrangements. Ninety cases of case study arrangements were evaluated using wind tunnel experimentation. The results show that for adequate wind circulation in the re-entrant corners, building orientations and separations play a critical role. Furthermore, in normal wind incident directions and at a high aspect ratio, poor wind flow was observed in the re-entrant corners. Moreover, it was noted that an optimized building orientation and aspect ratio significantly improved the wind flow in re-entrant corners and through passages. In addition, it was observed that oblique wind incident direction increased wind circulation in the re-entrant corners and through passages.

Re-Birth Design Analysis for Developing Sustainable Fashion Products

  • Lee, Yoon Kyung;DeLong, Marilyn
    • Journal of the Korean Society of Clothing and Textiles
    • /
    • v.40 no.3
    • /
    • pp.566-573
    • /
    • 2016
  • Sustainability in fashion cannot ignore fashion attributes required for the design of rapidly changing and innovative products. This study examines "Re-Birth Design" development and provides a means to apply academic and industry perspectives to the investigation of Re-Birth fashion product development. This study defines "Re-Birth Design" as stock that has been designed and launched through distribution channels, subsequently returned unused, then improved and reborn into a new product for redistribution. This study analyzed specific cases. We selected 100 designs for Re-Birth from 11 brands of "K" fashion company in Korea, to be successfully sold in 2014. These cases are used in the analysis and are categorized into design types. As a result of the analysis, "Re-Birth Design" had five levels: Level 1. Changes in supplementary materials such as adding or removing decoration, Level 2. Changes in patterns or materials (changes within the product), Level 3. Partial changes in design (leading to a new design), Level 4. Complete deconstruction and rebirth of the design, and Level 5. Complete deconstruction followed by the use of the design source for a new product that is not a garment. This study analyzed products owned by brands, as well as successful cases of Re-Birth designs that reused existing resources, reduced energy consumption, and increased environmental and economic efficiency by recreating new products that could be resold.

Reynolds number effects on twin box girder long span bridge aerodynamics

  • Kargarmoakhar, Ramtin;Chowdhury, Arindam G.;Irwin, Peter A.
    • Wind and Structures
    • /
    • v.20 no.2
    • /
    • pp.327-347
    • /
    • 2015
  • This paper investigates the effects of Reynolds number (Re) on the aerodynamic characteristics of a twin-deck bridge. A 1:36 scale sectional model of a twin girder bridge was tested using the Wall of Wind (WOW) open jet wind tunnel facility at Florida International University (FIU). Static tests were performed on the model, instrumented with pressure taps and load cells, at high wind speeds with Re ranging from $1.3{\times}10^6$ to $6.1{\times}10^6$ based on the section width. Results show that the section was almost insensitive to Re when pitched to negative angles of attack. However, mean and fluctuating pressure distributions changed noticeably for zero and positive wind angles of attack while testing at different Re regimes. The pressure results suggested that with the Re increase, a larger separation bubble formed on the bottom surface of the upstream girder accompanied with a narrower wake region. As a result, drag coefficient decreased mildly and negative lift coefficient increased. Flow modification due to the Re increase also helped in distributing forces more equally between the two girders. The bare deck section was found to be prone to vortex shedding with limited dependence on the Re. Based on the observations, vortex mitigation devices attached to the bottom surface were effective in inhibiting vortex shedding, particularly at lower Re regime.

An Empirical Study on the Determinants of Re-startup Firm's Performance by the Condition of Credit Problems (신용문제에 따른 재창업기업 성과 결정 요인에 대한 실증연구)

  • Kim, In Sue;Lee, Taek Ku
    • Asia-Pacific Journal of Business Venturing and Entrepreneurship
    • /
    • v.13 no.2
    • /
    • pp.15-26
    • /
    • 2018
  • This study examines the effects of failure experience, re-startup's motivation, government support business and education for re-startup on the performance of re-startup firms after failure. In addition, we analyzed how the above factors affect the performance of re-startup firms by the condition of debt and credit problems. As a result of the analysis, the failure experience had no significant effect on the re-startup performance regardless of the credit problem, while re-startup's motivation, government support business and education for re-startup had a significant effect on re-startup firms' performance. In the re-startup group with the credit problem, the re-startup's motivation and the failure experience had a significant influence on the re-startup firms' performance. On the other hand, in the group that did not solve the credit problem, the re-startup's motivation and the failure experience had no significant effect on the re-startup performance, but the government support business and education for re-startup had a significant effect on re-startup performance. The results of this study are as follows: First, it shows that the characteristics of re-startups and the determinants of re-startups are different according to credit problems. Second, this study shows that it takes 56 months on average from the close of business to the re-start, and it may take more than 7 years due to the credit problems and bankruptcy. This suggests the necessity to consider re-startup in the concept of obsolete in consideration of time, when studying the direct/indirect influence of failure experience and re-startup, and establishing policy.

Influence of Cooking, Storage Period, and Re-heating on Production of Cholesterol Oxides in Chicken Meat

  • Choe, Juhui;Min, Joong-Seok;Lee, Sang-Ok;Khan, Muhammad Issa;Yim, Dong Gyun;Lee, Mooha;Jo, Cheorun
    • Food Science of Animal Resources
    • /
    • v.38 no.3
    • /
    • pp.433-441
    • /
    • 2018
  • The objective of present study was to investigate the effect of cooking and their combinations with re-heating methods on the formation of cholesterol oxidation products (COPs) in stored chicken thigh meat. Pan roasting, steaming, oven grilling, charcoal grilling, and microwaving were used for cooking. Re-heating of samples was done using the same cooking methods or microwaving after 3 and 6 d of refrigerated storage. Cooking and re-heating resulted in reduction of crude fat and cholesterol contents of chicken thigh meat depending on storage period before re-heating. Cooking and storage period had no influence on the total amount of COPs. The highest total amount of COPs was observed in meat samples cooked by steaming and reheated by microwaving after 6 d of storage, which showed similar value to raw chicken meat stored for 6 days. However, different re-heating methods formed different types of COPs depending on storage period before re-heating. The high amount (p<0.05) of 25-hydroxycholesterol or ${\alpha}-epoxide$ was detected in meat samples reheated by steaming or microwaving at 3 or 6 d of storage after steamed cooking, respectively. As a result, the combination of steaming and re-heating with microwaving could increase the total amount of COPs in chicken thigh meat and different cooking/re-heating methods could form different types of COPs, even though no significant difference in the total amount of COPs depending on storage period.