4,226 research outputs found

    RPC Gap Production and Performance for CMS RE4 Upgrade

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    CMS experiment constructed the fourth Resistive Plate Chamber (RPC) trigger station composed of 144 RPCs to enhance the high momentum muon trigger efficiency at both endcap regions. All new CMS endcap RPC gaps are produced in accordance with QA and QC at the Korea Detector Laboratory (KODEL) in Korea. All qualified gaps have been delivered to three assembly sites: CERN in Switzerland, BARC in India, and Ghent University in Belgium for the RPC detector assembly. In this paper, we present the detailed procedures used in the production of RPC gaps adopted for the CMS upgrade.Comment: RPC2014 conference contribution, 7 pages, 8 figure

    Adding Value to Boksoondoga through Product (re)Design

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    Department of Creative Design EngineeringIdentifying and exploiting local specialties are effective and useful strategies for local development. In Korea, the government promotes local industry, and developing a local specialty is a part of this. A specialty product not only improves local industry from an economic standpoint but also increases the design of cultural contents. One company called Boksoondoga has a certificated field specialty as an alcoholic beverage brand in Ulju-gun, Ulsan. Moreover, the companyโ€™s representative product rice wine is a kind of brewed rice wine of traditional Korea. This product earned local-specialty-wine approval from the ministry of agriculture and forestry in 2010. Boksoondoga rice wine could not be produced in large quantities due to the traditional brewing method of achieving natural fermentation by using local newly harvested rice and malt instead of using preservative and artificial yeast. This product is so unique because of its naturally occurring carbonic acid. It is refreshing like champagne and offers a deep, smooth flavor. Moreover, contrary to other brewed rice wines, it can be blended naturally even though it cannot be shaken when opened. A company has several national ongoing projects, not just focusing on a representative product but also using its brand value to engage in storytelling in the cottage industry rather than just concentrating on mass production in the factory setting. A company with such a characteristic faces the disadvantage that it is difficult to use mass production and large-scale marketing methods, unlike the situation facing other competitors in the same product line. However, it has the advantage of expanding and challenging its business, with there being a high degree of freedom regarding risk. Boksoondoga wants to bring a high-class touch to making rice wine, one of the traditional wines, the representative drink of Korea, like Japanese sake. Making the appearance of the bottle distinctly different from those of other companies' products is also part of this goal. The initiative, which began six years ago, has been spectacularly successful and has more capacity than do those of the companyโ€™s competitors. Its relatively high-priced sales method has also provoked a positive response from consumers. Currently, trends in the domestic alcohol-consumption market have become more accessiblethe age group of consumers has been lowered, and the distribution channel for alcohol is widening. Efforts have been made to bring Korean traditional alcohol to all consumers, not just the enthusiasts who enjoy the drink. Boksoondoga likewise is looking for a way in which to appeal to consumers who are more luxurious. This includes doing marketing, doing research and development, and upgrading existing products. The project aim with this specialized company is to suggest the possibility, from various points of view, of making the core product a representative one of Korea. However, it could be insufficient in the expansion of the business. There have previously been no quantitative data based on respondents in various fields because of the cottage industry situation. In this study, however, we had to enhance the reliability by using systematic market analysis to test parallel products and the sufficient samples of participants for meaningful results. The participantsโ€™ responses reflect their views of the prototypes (stimuli). As a result, the findings are expected to help the company to know what to concentrate on and how to lower its risk of failure during the expansion of the business. They will also increase the stability of the existing business base at the same time. In conclusion, the design outcome of this project involves a new product line based on design and engineering knowledge centering on the brand value that the company pursues, the product market trend, future possibilities, and problem solving. Along with introducing a low-volume beverage bottle that more consumers can access, I introduce a solution involving a new design of the lid part together with a solution to the overflow problem caused by carbonic acid leaks. In comparison with existing products, the patent application is under way to increase the possibility of expansion. I think this will be possible due to contributing to schools, the company, and industry.์ง€์—ญ ํŠน์‚ฐํ’ˆ์„ ๊ฐœ๋ฐœํ•˜๊ณ  ์ฐพ์•„๋‚ด๋Š” ๊ฒƒ์€ ์ง€์—ญ ๋ฐœ์ „์— ํšจ๊ณผ์ ์ด๊ณ  ์ ์ ˆํ•œ ์ „๋žต์ด๋‹ค. ํ•œ๊ตญ์ •๋ถ€๋Š” ์ง€์—ญ ์‚ฐ์—…์„ ์ง€์›ํ•˜๊ณ  ํ™๋ณดํ•˜๋Š” ๊ณผ์ œ๋“ค์ด ๋งŽ์œผ๋ฉฐ, ์ง€์—ญ ํŠน์‚ฐํ’ˆ ๊ฐœ๋ฐœ์€ ๊ทธ ์ผํ™˜์ด๋ผ๊ณ  ํ•  ์ˆ˜ ์žˆ๋‹ค. ์ด๋Ÿฐ ํŠน์‚ฐํ’ˆ๋“ค์€ ๊ฒฝ์ œ์ ์ธ ์ธก๋ฉด์—์„œ ์ง€์—ญ์‚ฐ์—…์„ ํ–ฅ์ƒ์‹œํ‚ฌ ๋ฟ๋งŒ ์•„๋‹ˆ๋ผ ๋ฌธํ™”์ ์ธ ์ปจํ…์ธ  ๋””์ž์ธ์—๋„ ํ•œ ๋ชซ์„ ํ•œ๋‹ค. ์šธ์‚ฐ๊ด‘์—ญ์‹œ ์šธ์ฃผ๊ตฐ์—๋Š” ์ด๋Ÿฐ ๋ณด์ฆ๋œ ํŠน์‚ฐํ’ˆ ์ค‘ ์ฃผ๋ฅ˜ ๋ธŒ๋žœ๋“œ์ธ โ€˜๋ณต์ˆœ๋„๊ฐ€โ€™๊ฐ€ ์žˆ๋‹ค. ๋ณต์ˆœ๋„๊ฐ€๋Š” ๋Œ€ํ‘œ์ ์ธ ์ œํ’ˆ์œผ๋กœ ์Œ€๋กœ ๋งŒ๋“  ๋ˆ„๋ฃฉ์œผ๋กœ ๋นš๋Š” ์ˆ ์ธ ์ „ํ†ต์ฃผ์˜ ํ•˜๋‚˜, ๋ง‰๊ฑฐ๋ฆฌ๋ฅผ ์ƒ์‚ฐํ•œ๋‹ค. ์ด ์ œํ’ˆ์€ 2010๋…„ ํ•œ๊ตญ ๋†๋ฆผ์ถ•์‚ฐ์‹ํ’ˆ๋ถ€๋กœ๋ถ€ํ„ฐ ์ง€์—ญ ํŠน์‚ฐ์ฃผ๋กœ ์Šน์ธ ๋ฐ›์•˜๋‹ค. ๋ณต์ˆœ๋„๊ฐ€์˜ ๋ง‰๊ฑธ๋ฆฌ๋Š” ์ „ํ†ต์ ์ธ ๋ฐฉ๋ฒ•์œผ๋กœ ์ˆ ์„ ๋นš์–ด ํ•˜๋ฃจ์— ๋งŽ์€ ์–‘์„ ์ƒ์‚ฐํ•˜์ง€ ์•Š๊ณ , ์ง€์—ญ์˜ ํ–…์Œ€์„ ์ด์šฉํ•ด ์ธ๊ณต์ ์ด๊ณ  ํ™”ํ•™์ ์ธ ์žฌ๋ฃŒ๋กœ ๋งŒ๋“  ๋ˆ„๋ฃฉ์ด ์•„๋‹Œ ์ฒœ์—ฐ ๋ˆ„๋ฃฉ์œผ๋กœ ์ƒ์„ฑ๋œ ์ž์—ฐ ๋ฐœํšจ๋œ ํƒ„์‚ฐ๊ฐ€์Šค๋ฅผ ํ•จ์œ ํ•˜๊ณ  ์žˆ๋‹ค. ๋‹ค๋ฅธ ํšŒ์‚ฌ์˜ ๊ฐ™์€ ์ œํ’ˆ๋“ค๊ณผ์˜ ํฐ ์ฐจ์ด์ ์ด๋ผ๋ฉด ์ œํ’ˆ ๊ณต์ • ์ค‘์— ํƒ„์‚ฐ์ด ์ฃผ์ž…๋˜์–ด ๋ฐ€๋ด‰๋œ ๊ฒƒ์ด ์•„๋‹Œ, ์‹œ๊ฐ„์ด ์ง€๋‚˜๋ฉด์„œ ๋ณ‘ ์•„๋ž˜์ชฝ์— ๊ฐ€๋ผ์•‰์€ ๋ˆ„๋ฃฉ์ด ์ฒœ์—ฐ ํƒ„์‚ฐ์„ ์ƒ์„ฑํ•œ๋‹ค๋Š” ์ ์ด๋‹ค. ์ด๋ ‡๊ฒŒ ๋งŒ๋“ค์–ด์ง„ ์ฒญ๋Ÿ‰ํ•œ ๋Š๋‚Œ์˜ ํƒ„์‚ฐ ๊ฐ€์Šค๋Š” ์ƒดํŽ˜์ธ์ฒ˜๋Ÿผ ๋ถ€๋“œ๋Ÿฝ๊ณ  ๊นŠ์€ ๋ง›์„ ๋งŒ๋“ ๋‹ค. ๊ฒŒ๋‹ค๊ฐ€ ์ด ํƒ„์‚ฐ ๊ฐ€์Šค๋Š” ์ฒœ์ฒœํžˆ ์Œ๋ฃŒ ์†์— ํ•จ์œ ๋˜์–ด ํƒ€ ์ œํ’ˆ๋“ค๊ณผ ๊ฐ™์ด ์Œ์šฉ ์ „ ํ”๋“ค์ง€ ์•Š์•„๋„ ์ž์—ฐ์Šค๋Ÿฝ๊ฒŒ ์˜ฌ๋ผ์˜ค๋ฉด์„œ ์„ž์ด๊ฒŒ ํ•œ๋‹ค. ๋ณต์ˆœ๋„๊ฐ€๋Š” ํ˜„์žฌ ์—ฌ๋Ÿฌ๊ฐ€์ง€ ๊ตญ๊ฐ€๊ณผ์ œ๋ฅผ ์ง„ํ–‰ํ•˜๊ณ  ์žˆ์œผ๋ฉฐ, ๋Œ€ํ‘œ์ œํ’ˆ์—๋งŒ ์ง‘์ค‘ํ•˜๋Š” ๊ฒƒ์ด ์•„๋‹Œ ๊ทธ๋“ค์ด ๊ฐ€์ง€๊ณ  ์žˆ๋Š” ๋ธŒ๋žœ๋“œ ๊ฐ€์น˜๋ฅผ ๊ฐœ๋ฐœํ•˜๊ณ  ์‚ฌํšŒ์— ๊ณตํ—Œํ•˜๋Š” ๊ฒƒ์— ํž˜์“ฐ๊ณ  ์žˆ๋‹ค. ์ด๋ ‡๋“ฏ ํŠน์ง•์ ์ธ ์ œํ’ˆ์„ ๊ฐ€์ง„ ํšŒ์‚ฌ๋Š” ๊ฐ™์€ ์ œํ’ˆ๋ผ์ธ ๊ฒฝ์Ÿ์‚ฌ๋“ค๊ณผ ๋‹ฌ๋ฆฌ ๋Œ€๋Ÿ‰์ƒ์‚ฐ, ๋Œ€๊ทœ๋ชจ์˜ ๋งˆ์ผ€ํŒ… ๋ฐฉ๋ฒ•์„ ์‚ฌ์šฉํ•˜๊ธฐ ์–ด๋ ต๋‹ค๋Š” ๋‹จ์ ์„ ๊ฐ€์ง€๊ณ  ์žˆ๋‹ค. ํ•˜์ง€๋งŒ ๋‹ฌ๋ฆฌ ์ƒ๊ฐํ•˜๋ฉด ์‚ฌ์—…์˜ ํ™•์žฅ๊ณผ ๋„์ „, ๋ฆฌ์Šคํฌ์ ์ธ ๋ฉด์—์„œ๋Š” ์ž์œ ๋„๊ฐ€ ๋†’๋‹ค๋Š” ์žฅ์ ์ด ์žˆ๋‹ค. ๋ณต์ˆœ๋„๊ฐ€๋Š” ์ „ํ†ต์ฃผ์˜ ํ•˜๋‚˜์ด๋ฉด์„œ ๋Œ€์ค‘์ ์ธ ๋ง‰๊ฑธ๋ฆฌ๋ฅผ ์ผ๋ณธ์˜ ์‚ฌ์ผ€์™€ ๊ฐ™์ด ํ•œ๊ตญ์˜ ๋Œ€ํ‘œ์ ์ธ ์ˆ ๋กœ ๋งŒ๋“ค๊ณ  ์‹ถ๋‹ค๋Š” ๋ชฉํ‘œ์™€ ํ•จ๊ป˜, ๊ณ ๊ธ‰์ ์ธ ๋ฉด์„ ๋‹ด์•„๋‚ด๊ณ  ์‹ถ์–ดํ•œ๋‹ค. ๋‹ค๋ฅธ ํšŒ์‚ฌ๋“ค์˜ ์ œํ’ˆ๊ณผ ํ™•์—ฐํ•˜๊ฒŒ ๋‹ค๋ฅธ ๋ณ‘์˜ ์™ธ์–‘ ๋˜ํ•œ ์ด ๊ฐ™์€ ๋ชฉํ‘œ์˜ ์ผํ™˜์ด๋ผ๊ณ  ํ•  ์ˆ˜ ์žˆ๋‹ค. 6๋…„ ์ „์— ์‹œ์ž‘ํ–ˆ๋˜ ์ด ์‹œ๋„๋Š” ๋ณด๊ธฐ ์ข‹๊ฒŒ ์„ฑ๊ณตํ–ˆ์œผ๋ฉฐ, ๊ฒฝ์Ÿ์‚ฌ๋“ค์— ๋น„ํ•ด ๋งŽ์€ ์šฉ๋Ÿ‰์„ ๋‹ด๊ณ , ์ƒ๋Œ€์ ์œผ๋กœ ๋†’์€ ๊ฐ€๊ฒฉ์˜ ํŒ๋งค๋ฐฉ์‹ ๋˜ํ•œ ์†Œ๋น„์ž๋“ค์—๊ฒŒ ๊ธ์ •์ ์ธ ๋ฐ˜์‘์„ ๋ถˆ๋Ÿฌ์ผ์œผ์ผฐ๋‹ค. ํ˜„์žฌ ๊ตญ๋‚ด ์ˆ  ์†Œ๋น„์‹œ์žฅ์˜ ํŠธ๋ Œ๋“œ๋Š” ์†Œ๋น„์ž์˜ ์—ฐ๋ น์ธต์ด ๋‚ฎ์•„์ง€๊ณ , ์ˆ ์˜ ์œ ํ†ต์ฑ„๋„์ด ๋„“์–ด์ง€๋ฉด์„œ ์ ‘๊ทผ์„ฑ์ด ๋†’์•„์กŒ๋‹ค. ๋Œ€๋Œ€๋กœ ๋‚ด๋ ค์˜ค๋Š” ์ „ํ†ต์ฃผ๋“ค์€ ๋งค๋‹ˆ์•„๋“ค๋งŒ์ด ์ฆ๊ธฐ๋Š” ์Œ๋ฃŒ๊ฐ€ ์•„๋‹Œ ๋Œ€์ค‘๋“ค์—๊ฒŒ ๊ฐ€๊นŒ์›Œ์ง€๋ ค๋Š” ์‹œ๋„๋ฅผ ํ•˜๊ณ  ์žˆ๋‹ค. ์ด์— ๋ณต์ˆœ๋„๊ฐ€๋„ ๋งˆ์ฐฌ๊ฐ€์ง€๋กœ ๋” ์งˆ ์ข‹์€, ๊ณ ๊ธ‰์Šค๋Ÿฌ์šด, ์†Œ๋น„์ž์—๊ฒŒ ์–ดํ•„ํ•  ์ˆ˜ ์žˆ๋Š” ๋ฐฉ๋ฒ•์„ ์ฐพ๊ณ  ์žˆ๋‹ค. ์ด๊ฒƒ์„ ์œ„ํ•ด์„œ๋Š” ๋งˆ์ผ€ํŒ…, ์—ฐ๊ตฌ ๋ฐ ๊ฐœ๋ฐœ, ๊ธฐ์กด ์ œํ’ˆ์˜ ํ–ฅ์ƒ ๋“ฑ ์—ฌ๋Ÿฌ๊ฐ€์ง€ ๋ฐฉ๋ฒ•์ด ์žˆ๋‹ค. ์„์‚ฌ ์กธ์—…๊ณผ์ œ์˜ ํ”„๋กœ์ ํŠธ๋กœ ์ง„ํ–‰ํ•˜๋Š” ์ด ์—ฐ๊ตฌ์˜ ๋ชฉ์ ์€ ์ด ํŠน๋ณ„ํ•œ ํšŒ์‚ฌ์—๊ฒŒ ๋‹ค์–‘ํ•œ ์ธก๋ฉด์—์„œ์˜ ํ•ต์‹ฌ ์ œํ’ˆ์„ ํ™œ์šฉํ•œ ๊ฐ€๋Šฅ์„ฑ๋“ค์„ ์ œ์•ˆํ•ด์ฃผ๋Š” ๊ฒƒ์ด๋‹ค. ๊ทธ๋ฆฌ๊ณ  ์ด๊ฒƒ์€ ํšŒ์‚ฌ์˜ ์‚ฌ์—… ํ™•์žฅ์—์„œ์˜ ๋ถ€์กฑํ•œ ๋ฉด๋“ค์„ ๋ณด์กฐํ•ด์ค„ ์ˆ˜ ์žˆ์„ ๊ฑฐ๋ผ ์ƒ๊ฐํ•œ๋‹ค. ํšŒ์‚ฌ๋Š” ์ž‘์€ ๊ทœ๋ชจ ํšŒ์‚ฌ์˜ ํŠน์„ฑ์ƒ ์—ฌ๋Ÿฌ ์˜์—ญ์˜ ์ˆ˜์ ์ธ ์‘๋‹ต์„ ํ†ตํ•œ ์ •๋Ÿ‰์ ์ธ ๋ฐ์ดํ„ฐ๋ฅผ ๋ถ„์„ํ•˜๋Š” ๊ฒƒ์ด ์‰ฝ์ง€ ์•Š์•˜์„ ๊ฒƒ์ด๋ฉฐ, ์ด์— ๋‚˜๋Š” ์ถฉ๋ถ„ํ•œ ์–‘์˜ ์‚ฌ์šฉ์ž ์‘๋‹ต๊ณผ ์ฒด๊ณ„์ ์ธ ์‹œ์žฅ ๋ถ„์„์œผ๋กœ ์‹ ๋ขฐ์„ฑ ์žˆ๋Š” ๊ฒฐ๊ณผ๋ฅผ ์ฃผ๊ณ ์ž ํ–ˆ๋‹ค. ๊ทธ๋ฆฌ๊ณ  ์ด ๊ฒฐ๊ณผ๋“ค์€ ์œ ํ˜•์˜ ํ”„๋กœํ† ํƒ€์ž…์— ๋ฐ˜์˜๋˜์–ด ์—ฐ๊ตฌ์‹ค ๊ทœ๋ชจ์˜ ์‹คํ—˜ ๊ณผ์ • ๋ฐ ๊ฒฐ๊ณผ๋ฅผ ๊ฑฐ์ณ ํšจ์šฉ์„ฑ๊ณผ ๊ฐ€๋Šฅ์„ฑ์„ ๊ฒ€์ฆํ•˜๋Š”๋ฐ ์“ฐ์˜€๋‹ค. ๊ฒฐ๋ก ์ ์œผ๋กœ๋Š” ์ด ํ”„๋กœ์ ํŠธ์˜ ๋””์ž์ธ ์•„์›ƒ์ปด์€ ํšŒ์‚ฌ๊ฐ€ ์ถ”๊ตฌํ•˜๋Š” ๋ธŒ๋žœ๋“œ ๊ฐ€์น˜์™€, ์ œํ’ˆ ์‹œ์žฅ ํŠธ๋ Œ๋“œ, ์•ž์œผ๋กœ์˜ ๊ฐ€๋Šฅ์„ฑ, ํ˜„์žฌ ๊ฐ€์ง„ ๋ฌธ์ œ์  ํ•ด๊ฒฐ ๋“ฑ์„ ์ค‘์‹ฌ์œผ๋กœ ๋””์ž์ธ๊ณผ ๊ณตํ•™์  ์ง€์‹์„ ๋ฐ”ํƒ•์œผ๋กœ ์ƒˆ๋กœ์šด ์ œํ’ˆ๋ผ์ธ์„ ์ œ์‹œํ•œ๋‹ค. ๋” ๋งŽ์€ ์†Œ๋น„์ž๋“ค์ด ์ ‘ํ•  ์ˆ˜ ์žˆ๋Š” ๋‚ฎ์€ ์šฉ๋Ÿ‰์˜ ์Œ๋ฃŒ๋ณ‘๊ณผ ํ•จ๊ป˜ ํƒ„์‚ฐ ๊ณผ๋‹ค๋ˆ„์ถœ๋กœ ์ธํ•œ ๋„˜์น˜๋Š” ๋ฌธ์ œ๋ฅผ lid ๋ถ€๋ถ„์˜ ์ƒˆ๋กœ์šด ์„ค๊ณ„์™€ ํ•จ๊ป˜ ๊ฐœ๋ฐฉ ๋ฐฉ๋ฒ•์„ ์ œ๊ณตํ•ด์ฃผ๋Š” ์†”๋ฃจ์…˜์„ ๋„์ž…ํ•˜์˜€๋‹ค. ์‹ค์ œ ๊ธฐ์กด ์ œํ’ˆ๊ณผ์˜ ๋น„๊ต๋ฅผ ํ†ตํ•ด ํ™•์žฅ ๊ฐ€๋Šฅ์„ฑ์„ ๋†’์ด ์‚ฌ ํŠนํ—ˆ์ถœ์›์„ ์ง„ํ–‰ ์ค‘์ด๋ฉฐ, ์ด๋Š” ํ•™๊ต์™€ ํšŒ์‚ฌ ๊ทธ๋ฆฌ๊ณ  ์‚ฐ์—… ์˜์—ญ์— ๊ณตํ—Œํ•˜๋Š” ๊ฒฐ๊ณผ๋ฌผ์ด ๋  ๊ฒƒ์ด๋ผ ์ƒ๊ฐํ•œ๋‹ค.ope

    Experimental Multimission Microsatellites - KITSAT Series

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    This paper is to report the result of the first Korean satellite, KITSAT-OSCAR 23 (KITSAT-1) and to introduce the KITSAT-B to be launched in September 1993

    Continuous and Semi-Continuous Operations of Chemical-Looping Combustion in an Annular Fluidized Bed Reactor with Solids Circulation

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    Chemical-looping combustion (CLC) of methane was carried out in an annular shape fluidized bed reactor with double circulations. Combustion efficiency of the continuous and semi-continuous operations with NiO and Fe2O3 supported on bentonite were determined. Combustion efficiencies of the semi-continuous operations with NiO/bentonite and Fe2O3/bentonite are over 99 % in both cases, and those of the continuous operations are around 97 % and 72 %, respectively. The chemical reactivity of NiO is higher than Fe2O3 in the CLC process. The concentration of CO in flue gas was below 1% and no H2 emission was detected

    Structure of shock compressed model basaltic glass: Insights from O K-edge X-ray Raman scattering and high-resolution ^(27)Al NMR spectroscopy

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    The detailed atomic structures of shock compressed basaltic glasses are not well understood. Here, we explore the structures of shock compressed silicate glass with a diopsideโ€“anorthite eutectic composition (Di_(64)An_(36)), a common Fe-free model basaltic composition, using oxygen K-edge X-ray Raman scattering and high- resolution ^(27)Al solid-state NMR spectroscopy and report previously unknown details of shock-induced changes in the atomic configurations. A topologically driven densification of the Di_(64)An_(36) glass is indicated by the increase in oxygen K-edge energy for the glass upon shock compression. The first experimental evidence of the increase in the fraction of highly coordinated Al in shock compressed glass is found in the ^(27)Al NMR spectra. This unambiguous evidence of shock-induced changes in Al coordination environments provides atomistic insights into shock compression in basaltic glasses and allows us to microscopically constrain the magnitude of impact events or relevant processes involving natural basalts on Earth and planetary surfaces
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