Results 1 - 10 of 3144
Results 1 - 10 of 3144. Search took: 0.025 seconds
|Sort by: date | relevance|
[en] Radioisotope, radiopharmaceutical and cyclotron technologies are extensively developed, increasing the contribution to solve the problem of community. Radioisotopes can be produced by neutron irradiation in a nuclear reactor or by irradiation of charged particles using a cyclotron. Along with the development of radioisotope technology, new radioisotopes or new radioisotope production methods have been successfully developed. Cyclotron utilization technology continues to evolve by utilizing high energy charged particles. Several radioisotope and radiopharmaceutical production technologies, as well as the utilization of cyclotron have been successfully developed in Indonesia. Research and development results in the form of diagnostic agents, therapeutic agents, radioassay technologies and radioactive tracers have been successfully obtained. In the development of diagnostic agents, several diagnostic radioisotope and radiopharmaceutical production technologies have been successfully developed. Some of the production technologies have been utilized by pharmaceutical industry to meet the needs of community. In therapeutic agent, production technologies of therapeutic radioisotope, therapeutic radiopharmaceutical and sealed source have been developed. In radioassay technology development, production technologies of radioimmunoassay (RIA) / immunoradiometric assay (IRMA) kits and the utilization of radioligand binding assay (RBA) have been successfully developed. In the radioactive tracers, production technologies of tracers for industry, biomedical research, natural resources and the environment management have been successfully obtained. The next challenge is the utilization of the technologies, so that the technologies are more beneficial to the community. In the utilization of the technologies, intensive cooperation among research and development institutions, industries, users and regulatory bodies are required. (author)
[en] A practical and efficient total synthesis of sauristolactam has been achieved in 10 steps and 26.2% overall yield, starting from commercially inexpensive 2-methoxy-4-methylphenol. Notably, the use of the Suzuki-Miyaura coupling/aldol condensation cascade reaction allowed the construction of the phenanthrene lactam core in a onepot reaction. Studies involving evaluation of in vivo efficacy of sauristolactam will be reported in due course. Sauristolactam is a naturally occurring alkaloid that was first isolated from the extracts of the aquatic weed Saururus cernuus L. (Saururaceae) by Rao and Reddy in 1990. As illustrated in Figure 1, sauristolactam, one of the members of structurally related aristolactams is comprised of a phenanthrene lactam scaffold. Due to its unique structures and promising biological properties, the aristolactam family continues to attract considerable interest from many organic and medicinal chemists. For example, sauristolactam was identified as a potential anticancer agent proven to be active against a variety of tumor cell lines, including HCT-15 colon cancer cell (IC50 = 4.1 μM). In addition, sauristolactam exhibited inhibitory activity of osteoclast differentiation against mouse RAW264.7 monocyte/macrophage cells for the potential treatment of osteoporosis. Kim and colleagues reported neuroprotective activity of sauristolactam against glutamate-induced toxicity in primary cultured rat cortical cells via the direct inhibition of nitric oxide production
[en] Highlight• Analysis of the UK energy and non-energy intensive sectors firms in a real business cycle (RBC) model. We investigate the role of energy shocks during the Great Recession. We study the behaviour of the UK energy and non-energy intensive sectors firms in a real business cycle (RBC) model using unfiltered data. The model is econometrically estimated and tested by indirect inference. Output contraction during the Great Recession was largely caused by energy price and sector-specific productivity shocks, all of which are non-stationary and hence tend to dominate the sample variance decomposition. We also found that the channel by which the energy price shock reduces output in the model is via the terms of trade: these fall permanently when world energy prices increase and as substitutes for energy inputs are strictly limited there are few reactions via production channels. Therefore, there is no other way to balance the deteriorating current account than through lower domestic absorption.
[en] The purpose of this research was carried out with developing biomaterials by increase of extracting yield and functionality of natural ingredient and contributing high value technology in field of beauty industry. - In this project, We optimized effective extraction method for active components in natural ingredient using irradiation technology and developed radiation fusion technology-applied biomaterial ingredient. On the basis of these results, we developed two healthcare material and one prototype, and our result can suggest a new paradigm for development of functional cosmetics and cosmeceuticals in beauty and health industries. Furthermore, our findings contribute to minimize side effects of synthetic materials and act as supplemental cosmetics for skin diseases. - Consequently, our outcomes indicate that application of radiation fusion technology will be valuably applicated in various industrial field
[en] Full text: In recent years, several techniques of hydrogen producing have attracted the interest of the scientific community and the fuel and transport industry. Hydrogen is one of the most promising sources of energy and can be produced by divers renewable and non-renewable using different methods: from fossil fuels and agricultural or forest biomass from the water by methods of thermal processes, thermochemical, or photoelectrocatalytic electrolysis of water, and can be used in fuel cells to generate electricity and combustion engines to increase efficiency. The combination of these methods linked to the pyrolysis appropriate a promising alternative for hydrogen production and consequently to reduce the environmental impact generated by waste biomass. The Rio Grande do Sul is the largest rice producer in Brazil and as a result generates in great quantity bark after its melioration. The pyrolysis process generates three by-products with high added value such as bio-oil, gas and ash, with a possibility to reduce the environmental impact, since it is based on thermochemical conversion of agro-industrial residues, and an alternative for obtaining hydrogen from the bark biomass of rice. The objective is the production of hydrogen from rice husk gray obtained in the pyrolysis process. The characterization of rice husk gray by XRD, EDX, IR and observed the presence of SiO2 which is prevalent in this type of material. Because the process is carried out in a controlled atmosphere the presence of carbon cannot be discarded. Using the technique of electrolysis to form hydrogen gas composed acrylic with a cell in the presence of two graphite electrodes it was possible to generate hydrogen demonstrate in voltage of 4.5 volts and 65.7 amperes by Faraday's Law and the high pH in the reaction. Therewith, this preliminary study shows that the process of hydrogen producing to become a viable alternative for the destination of waste biomass. (author)
[en] Significant amounts of Tc-97 are released in to the environment by nuclear bomb tests, nuclear reprocessing plants, nuclear accidents and nuclear medicine. Further, as a fission product, Tc-99 is a concern for the storage of spent nuclear fuel concerning the high mobility of the pertechnetate ion. Hence quantitative ultra trace analysis of it is of great importance. However the lack of stable Tc isotopes hampers the measurements by AMS. Our approach to overcome this obstacle is to utilize the long lived isotope Tc-97. Therefore we have produced Tc-97 in two ways, by Ru-96(n,γ)Ru-97 ≥ Tc-97 in our research reactor FRMII and by the nuclear reaction of Li-7 with Nb-93 at our tandem accelerator. An important issue is the proceeding sample chemistry to suppress Mo-97 and Ru-99 to achieve low backgrounds for the AMS measurements. In this presentation we will report on the nuclide production, our sample chemistry and details of the first AMS measurement.
[en] Highlights: • A Dynamic Range Adjusted Measure with unified natural & managerial disposability is firstly proposed. • The model can judge automatically whether the airline should be under natural disposability or managerial disposability. • The samples are 29 international airlines during 2009–2015. • Improving undesirable outputs is not the most urgent work of these airlines. - Abstract: In this paper, we propose a Dynamic Range Adjusted Measure with unified natural & managerial disposability to evaluate the dynamic efficiency of 29 airlines during 2009–2015. In a dynamic period, the new model can judge automatically whether the airline should be under natural disposability or managerial disposability in the premise of optimizing the overall efficiency. We get some findings: 1. Scandinavian has the highest overall efficiency among these 29 airlines while Norwegian's overall efficiency is the least. 2. Improving undesirable outputs is not the most urgent work of these airlines. 3. In order to optimize the overall efficiency, most airlines should be under managerial disposability. 4. Most airlines' efficiencies have no obvious fluctuation in this period.
[en] Every production facility is made of several essential functions such as raw material management, material processing function, branding and distribution function. Apart from these vital functions, there are supporting functions such as quality control and equipment-maintenance (hereafter called as 'maintenance' in short). The subject matter of maintenance had grown in a formal manner had branched into concepts such as breakdown maintenance, preventive maintenance, predictive maintenance, Total Quality Maintenance, and so on. The maintenance workforce, though had not implemented these concepts in a formal manner, had silently assimilated these concepts and implemented an amalgamated work style to meet the requirements of the production plant. Their experience had revealed that, while creativity is an essential requirement of research work, even maintenance work gets enriched by allowing ourselves to creativity. This paper is a brief description of application of creativity in maintenance activities in order to make success in minimum time and cost, to ultimately support production
[en] This study is concerned with the impact factors of electric carbon productivity change in China. Some influencing factors are identified by examining the time series decomposition of electric carbon productivity based on data from 2003 to 2015, where the usual Logarithmic Mean Divisia Index (LMDI) method is used but with the regional dimension taken into consideration. Moreover, this study analyzes the driving factors of electric carbon productivity change from the perspective of production and consumption in China’s power industry, where the influences of power transfers among provinces, imports and exports, and transmission losses are considered. Based on the decomposition analysis of existing data in 30 provinces (including province-level municipalities), from the perspective of production, regional actual electric carbon productivity, and per capita GDP are the main influencing forces for the growth of electric carbon productivity, and the reciprocal of per capita electric carbon emissions, energy intensity, and energy emission intensity play dominate roles in the decline of electric carbon productivity. From the perspective of consumption, the main impact factors to improve electric carbon productivity are power transfers among provinces, imports and exports, the reciprocal of emission intensity of power consumption and regional electric carbon productivity, and the impact of energy consumption on thermal power generation, the proportion of thermal power to total electricity generation, and the effect of transmission losses. Finally, several conclusions are drawn that might be meaningful for the Chinese government to improve China’s electric carbon productivity.