• 제목/요약/키워드: solid content

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회수수 안정화제 종류 및 고형분량 변화에 따른 콘크리트의 특성에 관한 연구 (A Study on the Properties of Concrete with the Kinds of Stabilizing Agent and Solid Content)

  • 김기정;김광화;이문환;이세현;한천구
    • 한국건축시공학회:학술대회논문집
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    • 한국건축시공학회 2003년도 학술.기술논문 발표회
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    • pp.113-117
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    • 2003
  • In this study is investigated the various properties of concrete with the kinds of stabilizing agent of recycling water and solid content in order to suggest a practical use of recycling water. According to the results, fluidity and air content varies slightly with the kinds of stabilizing agent and solid content, but does not make a big difference. Setting time does not differ remarkably from plain concrete at 20℃, but is shortened with an increase of solid content. Bleeding is reduced more largely in the case of S than in the case of R, and is not influenced by solid content. Compressive strength is equal or decreases in comparison with plain concrete at solid content of I and 50%, and shows the highest value at solid content of 3%. Length change by drying shrinkage is larger than plain concrete at solid content of 5%, and decreases at solid content of I and 3%. Therefore, it proves that the influence of the kinds of stabilizing agent is minute, and solid content is most effective at 3%.

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회수수 안정화제 종류 및 고형분량 변화에 따른 콘크리트의 특성에 관한 연구 (A Study on the Properties of Concrete with the Kinds of Stabilizing Agent and Solid Content)

  • 김기정;김광화;이문환;이세현;한천구
    • 한국건축시공학회:학술대회논문집
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    • 한국건축시공학회 2003년도 학술.기술논문발표회
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    • pp.113-117
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    • 2003
  • In this study is investigated the various properties of concrete with the kinds of stabilizing agent of recycling water and solid content in order to suggest a practical use of recycling water According to the results. fluidity and air content varies slightly with the kinds of stabilizing agent and solid content, but does not make a big difference. Setting time does not differ remarkably from plain concrete at 2$0^{\circ}C$, but is shortened with an increase of solid content. Bleeding is reduced more largely in the case of S than in the case of R, and is not influenced by solid content. Compressive strength is equal or decreases in comparison with plain concrete at solid content of 1 and 5%, and shows the highest value at solid content of 3%. Length change by drying shrinkage is larger than plain concrete at solid content of 5%, and decreases at solid content of 1 and 3%. Therefore, it proves that the influence of the kinds of stabilizing agent is minute, and solid content is most effective at 3%.

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쌀의 농도가 죽 재가열시 이화학적 특성에 미치는 영향 (Effect of Soild Content on the Physicochemical Properties of Rice Porridge After Reheating)

  • 양윤형;김민희;권오윤;이정희;이근종;이주운;김미리
    • 한국식품조리과학회지
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    • 제23권5호
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    • pp.671-676
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    • 2007
  • The effect of solid content on the physicochemical properties of rice porridge after reheating. The concentration of rice porridge was classified as solid content (12%, 10%, and 8%) by traditional Korean cooking methods. For reheating, packed rice porridge was boiled in water for 3 min and then cooled at room temperature ($25^{\circ}C$). The viscosity, soluble solid content and reducing sugar content of the rice porridge increased according to the solid content, while the blue value decreased. After reheating, the viscosities ($25^{\circ}C$) of all rice porridges decreased to 2.9-8.4%, compared to those of freshly made rice porridge, whereas the soluble solid content and reducing sugar content increased inversely according to the solid content of rice porridge. The SDI (starch digestion index) increased according to the solid content, whereas SDS (slowly digestible starch) the lowest in the solid content 12% porridge. Based on these results, it is favorable that the viscosity decrease after reheating was to be considered to ready-to eat rice porridges preparation.

스페이서 사용에 의한 OCC 압착공정의 고형분 증대 (II) (Application of wood flour spacers for increasing OCC solid content in wet pressing process (II))

  • 정재권;지성길;서영범
    • 펄프종이기술
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    • 제47권3호
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    • pp.24-33
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    • 2015
  • Linerboards containing wood flours were developed to increase solid contents in wet pressing process. Presence of wood flours in recycled fibers allowed passage of pressurized water at high wet pressing pressure, and increased solid contents while keeping the bulk of the board. The amount of wood flour addition should be controlled based on the intensity of the wet pressing pressure and the properties of the wood flours. Addition of cationic starch to the wood flour containing OCC furnish showed synergic increase of solid content and strength properties. Shapes of the wood flours such as spherical and rod type added to OCC furnish affected largely their solid content, drainage, and board physical properties.

추출 조건에 따른 고추 수용액의 가용성 성분의 변화 (Changes of Soluble Solid Content in Red Pepper by Different Extraction Conditions)

  • 이현덕;이철호
    • 한국식생활문화학회지
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    • 제11권3호
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    • pp.385-392
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    • 1996
  • The soluble solid of red pepper was extracted by water in order to investigate changes of soluble solid content by different extraction temperature $(4{\sim}90^{\circ}C)$ and time $(1/2{\sim}3\;hrs)$, and the contents of carotenoid, capsaicinoids, free sugar, organic acid, free amino acid in soluble solid were measured. Most of soluble solid in red pepper was extracted within the first 2 hrs and $93{\sim}98%$ of total soluble solid was extracted during the first 30 min. The contents of carotenoid increased by increasing extraction time and temperature, but decreased by increasing extraction time at $60^{\circ}C$ and $90^{\circ}C$. ${\beta}$-carotene content was sharply decreased after 2 hrs at $90^{\circ}C$. The content of capsaicinoid was sharply increased between 1 hr and 2 hr. Fructose and glucose in red pepper were extracted in the range of $83.8%{\sim}96.4%$ and the contents of free sugar gradually increased by increasing extraction time and temperature. The content of organic acid was gradually increased by increasing extraction time and temperature and the greatest amount of organic acid was extracted during the first 30 min of extraction time. The content of free amino acid was decreased by increasing extraction temperature.

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장아찌의 종류와 저장기간에 따른 나트륨 함량 변화 - 건더기와 양념(국물)의 구분 분석법을 적용하여 - (Changes in Sodium Content by Type of Jangajji and Length of Storage Period-By Applying an Analysis Technique to Differentiate Solid Ingredients from Seasoning Liquid-)

  • 최지유;김소영
    • 한국식품영양학회지
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    • 제37권2호
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    • pp.88-99
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    • 2024
  • This study aimed to provide an accurate estimate of sodium intake from jangajji by examining the changes in sodium content according to the type of jangajji and the length of storage period, specifically differentiating between the solid ingredients and the seasoning liquid. It focused on six types of jangajji: chili pepper, perilla leaf, onion, radish, garlic scape, and cucumber. The sodium content in the solid ingredients and the seasoning was measured using a salinometer and ICP-AES. The results indicated that across all types of jangajji, the seasoning liquid consistently contained significantly higher levels of sodium than the solid ingredients. When comparing the sodium content measured by ICP-AES with that from a salinometer, the salinometer readings were significantly lower for both the solid ingredients and the seasoning liquid in all types of jangajji. Additionally, when comparing the sodium content of the solid ingredients with that listed in the nation's representative nutritional databases, a substantial discrepancy was noted, with some cases potentially overstating the actual sodium intake from jangajji. Overall, this study suggests that an urgent review should be conducted to identify and resolve the causes of such discrepancies and accurately estimate the actual sodium intake from jangajji.

Optimization of Monochamus alternatus media and culture period for cordycepin production in Cordyceps militaris culture using solid-state fermentation

  • Ha, Si Young;Jung, Ji Young;Yang, Jae-Kyung
    • 한국버섯학회지
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    • 제19권3호
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    • pp.126-133
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    • 2021
  • In this study, we investigated the effect of solid culture medium on the production of cordycepin in Cordyceps militaris. The regression equation was expressed as follows: Y1 = 755.3-58.6625X1+4.79432E-14X2-46.6625X3-5.66269E-14X1X2-0.025X1X3+1.62475E-14X2X3-160.6625X12+0.0125X22-206.9625X32, where, Y represents the value of cordycepin content (㎍/g), X1 corresponds to the weight of M. alternatus in solid culture medium (g/bottle), X2 to the water content of the solid culture medium (%), and X3 to the culture period (day). The solid culture medium was optimized using the response surface methodology, and the optimal medium composition was as follows: the weight of M. alternatus in solid culture medium and water content were 16.2% and 100.7% (20.14 mL water/20 g solid culture medium), respectively, with a culture period of 39 days. Under these conditions, the cordycepin content of the fruiting bodies reached 150.0 ㎍/g (actual value). The supplementation of M. alternatus in solid culture for improved cordycepin content of C. militaris seems to be a promising alternative to wild and solid cultivation.

골판지 원지의 건조효율 증대를 위한 목분의 이용 (Utilization of Wood Flour for Drying Energy Saving of Old Corrugated Container)

  • 서영범;정재권;이영호;성용주
    • 펄프종이기술
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    • 제46권6호
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    • pp.8-15
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    • 2014
  • The increase of wet web solid content in wet pressing will save drying energy greatly. We applied wood flours as spacers to increase the old corrugated container (OCC) solid contents in wet pressing. The mixed furnish of OCC and wood flours of 3-5% (wt/wt) increased bulk and drainage rate, and by increasing wet pressing pressure, its solid content started to be higher than 100% OCC furnish at more than 50% solid content level. Addition of cationic starch and drainage aid to the mixed furnish increased solid content further up to around 2%. Cationic starch addition compensated or exceeded the loss of tensile and compressive strength caused by the addition of wood flour, but drainage aid did not. Cationic starch also improved the stretch of the OCC, which could mitigate cracking at folding in boxboard.

화학혼화제 고형분량 변동이 콘크리트 품질에 미치는 영향 (Influences on Concrete Quality of Residue Content Change of Chemical Admixtures)

  • 김진철;유혁진;김홍삼;정호진
    • 콘크리트학회논문집
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    • 제26권4호
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    • pp.457-463
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    • 2014
  • 이 연구는 화학혼화제 인수검사 기준으로 활용할 수 있는 고형분량 변동이 콘크리트 품질에 미치는 영향에 대해 살펴보는데 그 목적을 두었다. 현재 한국도로공사의 잠정기준으로 운용 중인 ASTM C 494 기반의 고형분량 변동범위 ${\pm}12%$는 혼화제의 종류 및 고형분량의 특성을 반영하지 못해 혼화제 종류에 따라 상이하게 나타났다. 고형분량 변동에 따른 콘크리트의 품질 변동을 평가한 결과 리그닌은 감수율이 낮은 관계로 고형분량의 변동범위가 큰 반면 나프탈렌계 및 폴리칼본산계 고성능감수제는 높은 감수율로 인하여 인수검사 기준으로 활용 중인 고형분량의 차이에 대한 허용범위 재조정이 요구되었다.

옥광(Castanea crenata) 밤송이 추출물의 생리활성 효과 (Biological Activities of Extracts from Okkwang (Castanea crenata) Chestnut Bur)

  • 이은호;홍신협;조영제
    • 한국식품영양과학회지
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    • 제46권5호
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    • pp.572-580
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    • 2017
  • 옥광(Okkwang; Castanea crenata) 밤송이 고형분의 phenolic 화합물의 함량은 물, 40% 에탄올 추출물에서 각각 11.24, $10.28{\mu}g/50{\mu}g$ solid로 측정되었다. DPPH 라디칼 소거능은 물, 에탄올 추출물 $50{\mu}g/mL$ solid 농도에서 각각 85, 87%의 전자공여능을 나타내었고, ABTS 라디칼 소거능은 물, 에탄올 추출물에서 각각 100, 86%의 전자공여능을 나타내었다. PF에서는 물, 에탄올 추출물 $200{\mu}g/mL$ solid 농도에서 각각 1.22, 1.45 PF를 나타내었고, TBARS는 물 추출물에서 83%, 에탄올 추출물에서는 73%의 효능을 나타내었다. XOase 저해 효과는 물, 에탄올 추출물 $200{\mu}g/mL$ solid 농도에서 각각 54, 43%를 나타내었다. ${\alpha}$-Glucosidase 저해 효과는 $50{\mu}g/mL$ solid 농도에서 물 추출물은 95%, 에탄올 추출물에서는 96%의 저해 효과를 나타내었다. 미백을 나타내는 tyrosinase 저해 효과는 $200{\mu}g/mL$ solid 농도에서 에탄올 추출물은 27%의 효능을 나타내었다. 주름개선을 보여주는 collagenase 저해 효과는 $200{\mu}g/mL$ solid 농도에서 물, 에탄올 추출물 각각 93, 94%의 우수한 주름개선 효과를 나타내었으며, elastase 저해 효과는 $200{\mu}g/mL$ solid 농도에서 에탄올 추출물은 56%의 효능을 나타내었다. 항염증 효과를 나타내는 HAase 저해 효과를 측정한 결과 $200{\mu}g/mL$ solid 농도에서 물, 에탄올 추출물에서 각각 96, 52%의 항염증 효과를 나타내었다. 이러한 결과로 보아 OCS 추출물은 항산화 활성, 통풍 억제, 항당뇨, 미백, 주름개선, 항염증 효과가 우수하므로 기능성 소재로서 사용이 가능할 것으로 기대된다.