• Title/Summary/Keyword: solid content

Search Result 2,127, Processing Time 0.036 seconds

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

  • Kim, Ki-Jeong;Kim, Guang-Hua;Lee, Mun-Hwan;Lee, Sea-Hyun;Han, Cheon-Goo
    • Proceedings of the Korean Institute of Building Construction Conference
    • /
    • 2003.11a
    • /
    • pp.113-117
    • /
    • 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%.

  • PDF

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

  • 김기정;김광화;이문환;이세현;한천구
    • Proceedings of the Korean Institute of Building Construction Conference
    • /
    • 2003.05a
    • /
    • pp.113-117
    • /
    • 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%.

  • PDF

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

  • Yang, Yun-Hyoung;Kim, Min-Hee;Kwon, Oh-Yun;Lee, Jeong-Hee;Lee, Kun-Jong;Lee, Ju-Woon;Kim, Mee-Ree
    • Korean journal of food and cookery science
    • /
    • v.23 no.5
    • /
    • pp.671-676
    • /
    • 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.

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

  • Jung, Jae Kwon;Ji, Sung Jil;Seo, Yung Bum
    • Journal of Korea Technical Association of The Pulp and Paper Industry
    • /
    • v.47 no.3
    • /
    • pp.24-33
    • /
    • 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.

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

  • Lee, Hyun-Duck;Lee, Cherl-Ho
    • Journal of the Korean Society of Food Culture
    • /
    • v.11 no.3
    • /
    • pp.385-392
    • /
    • 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.

  • PDF

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- (장아찌의 종류와 저장기간에 따른 나트륨 함량 변화 - 건더기와 양념(국물)의 구분 분석법을 적용하여 -)

  • Jiyu Choi;So-young Kim
    • The Korean Journal of Food And Nutrition
    • /
    • v.37 no.2
    • /
    • pp.88-99
    • /
    • 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
    • Journal of Mushroom
    • /
    • v.19 no.3
    • /
    • pp.126-133
    • /
    • 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.

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

  • Seo, Yung Bum;Jung, Jae Gwon;Lee, Young Ho;Sung, Yong Ju
    • Journal of Korea Technical Association of The Pulp and Paper Industry
    • /
    • v.46 no.6
    • /
    • pp.8-15
    • /
    • 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.

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

  • Kim, Jin-Cheol;Yoo, Hyeok-Jin;Kim, Hong-Sam;Jeong, Ho-Jin
    • Journal of the Korea Concrete Institute
    • /
    • v.26 no.4
    • /
    • pp.457-463
    • /
    • 2014
  • The permitted limit, ${\pm}12%$, of the change in solid contents based on ASTM C 494 as an interim standard in Korea Expressway Corporation, can not reflect the kind of chemical admixture and the characteristics of solid content so that it differed depending on the admixture types. In this study, effect of cement concrete quality was investigated by solid changes which can be used chemical admixtures acceptance criteria. As a result of an evaluation of a change in the quality of concrete due to solid content, since Ligno-sulfonate based (LG) had a low water reducing ratio, the range of the change in solid content was great while Naphthalene sulfonated based (PNS) and Poly-carboxylate based (PC) High Range Water-reducing Admixtures (HRWR) had a high water reducing ratio, the permitted limit of the difference in solid content currently used as the acceptance criterion should be readjusted. As a result, it is found that the acceptable range must be managed within 10% and 5% when the solid contents less than 25% and more than 25%, respectively.

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

  • Lee, Eun Ho;Hong, Shin Hyub;Cho, Young Je
    • Journal of the Korean Society of Food Science and Nutrition
    • /
    • v.46 no.5
    • /
    • pp.572-580
    • /
    • 2017
  • The contents of phenolic compounds in water and 40% ethanol extracts from Okkwang (Castanea crenata) chestnut bur solid (OCS) were $11.24{\mu}g/50{\mu}g$ solid and $10.28{\mu}g/50{\mu}g$ solid, respectively. The 1,1-diphenyl-2-picrylhydrazyl free radical scavenging and 2,2'-azino-bis(3-ethylbenzothiazoline- 6-sulfonic acid) radical decolorization activities of water and ethanol extracts were 85% and 100% as well as 87% and 86% at a solid content of $50{\mu}g/mL$, respectively. The anti-oxidant protection factors (PFs) of water and ethanol extracts at a solid content of $200{\mu}g/mL$ were 1.22 PF and 1.45 PF, respectively. Thiobarbituric acid reactive substance were 83% in water extract and 73% in ethanol extract at a solid content of $200{\mu}g/mL$. The inhibitory activities against xanthine oxidase in water and ethanol extracts were 54% and 43% at a solid content of $200{\mu}g/mL$, respectively. The inhibitory activities against ${\alpha}$-glucosidase were 95% in water extract and 96% in ethanol extract at a solid content of $50{\mu}g/mL$. Tyrosinase inhibitory activity was 27% in ethanol extract at a solid content of $200{\mu}g/mL$. The collagenase and elastase inhibitory activities as anti-wrinkle effect were 93% and 11% in water extract as well as 94% and 56% in ethanol extract at a solid content of $200{\mu}g/mL$. Hyaluronidase inhibitory activity as anti-inflammatory effect of water and ethanol extracts were 96% and 52% at a solid content of $200{\mu}g/mL$, respectively. The results show that extracts from OCS can be used as a functional resource with antioxidant, anti-gout, carbohydrate degradation inhibitory, whitening, anti-wrinkle, and anti-inflammatory activities.