• 제목/요약/키워드: Inclusion Ratio

검색결과 482건 처리시간 0.036초

Effect of Dietary Phytase Supplementation on Growth Performance, Organ Weight and Tibia Ash of Broilers

  • Kumar, Shanmugam Suresh;Kim, In Ho
    • 한국가금학회지
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    • 제49권1호
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    • pp.9-14
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    • 2022
  • This study was conducted to investigate the effects of dietary inclusion of phytase on the growth performance, organ weight, and tibia ash of broilers. A total of 1008 one-day-old Ross 308 broiler chicks (mixed gender) with body weight 42 ± 0.90 g (mean ± SD) were used in a trial for 32 d. Chicks were assigned to one of the two treatment diets. Each treatment consisted of 28 replicate cages, with 18 birds per cage. The dietary treatments were as follows: CON, basal diet; TRT1, basal diet + phytase 1,500 Fan Terminal Unit (FTU)/kg diet. Dietary inclusion of 1,500 FTU/kg phytase supplementation in broilers showed only slight improvements in daily feed intake (P=0.086) and feed conversion ratio (P=0.065) on day 9 compared with that in the control group. However, organ weights of the breast muscle, liver, spleen, kidney, and bursa of Fabricius were not affected by the dietary treatments. In addition, the dietary inclusion of 1,500 FTU/kg phytase supplementation in the broiler diet had no effect on tibia ash. The addition of 1,500 FTU/kg phytase in the basal diet of broilers did not have any adverse effect on growth performance, organ weight, and tibia ash, suggesting that phytase supplementation in broiler diets will exhibit comparable effects as that of corn-soybean meal-based diet.

Improved methods for the preparation of $(Y_{1-x}Eu_x)_2O_3$:MX and $(Y_{1-x-y}Gd_xEu_y)_2O_3$:MX as red phosphor materials

  • Lee, You-Hui;Han, Sang-Do;Kim, Jung-Duk;Chang, Mi-Yeon;Singh, Ishwar.
    • 한국정보디스플레이학회:학술대회논문집
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    • 한국정보디스플레이학회 2004년도 Asia Display / IMID 04
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    • pp.715-718
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    • 2004
  • Substantially improved methods for the preparation of europium-doped yttrium oxide red phosphor with the inclusion of alkali metal halides having a general formula $(Y_{1-x}Eu_x)_2O_3$:MX where 0.025${\leq}$x${\leq}$0.2 and MX is alkali halide in the mole ratio 0.025 to 0.6, more preferably between 0.05 to 0.2 mole, are reported. Another series of the red phosphor materials with general formula $(Y_{1-x-y}Gd_xEu_y)_2O_3$:MX where 0.05${\leq}$x${\leq}$0.40 and 0.025${\leq}$y${\leq}$0.20 and MX is alkali halide in the mole ratio 0.025 to 0.5, more preferably between 0.1 to 0.2 mole, has also been presented. The inclusion of alkali halide greatly increase the luminance of the materials. The materials are very soft with fine particle size less than 100nm. The phosphorescent materials have good luminance in VUV region.

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구상화율에 의한 구상 흑연주철재의 피로강도의 정량적 평가 (Quantitative Evaluation of Fatigue Strength by Spheroidal of Graphite in Ductile Cast Iron)

    • 한국생산제조학회지
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    • 제8권5호
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    • pp.36-41
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    • 1999
  • Although the problems of defects and nonmetallic inclusion in metal fatigue are very complicated it is particularly important to view these problems from the perspective that defects and inclusions are virtually equivalent to small cracks. This concept will help us to understand various fatigue phenomena caused by graphite of Ductile cast iron. Therefore in this study different ferrite-pearlite matrix structure and pheroidal ratio of graphite of 70%, 80% and 90% GCD40 , GCD45-2 series have been carried out rotary bending fatigue test estimated the maxi-mum size of graphite investigated correlation. It was concluded as follows : (1) in ductile cast iron which have various spheroidal ratio of graphite the fatigue limit C series of 90% spheroidal ratio of graphite is the highest. While A series of 70% spheroidal ratio of graphite is the lowest (2) fatigue limit was predicted by vickers hardness(Hv) of matrix {{{{ SQRT {area } }}}} of maximum size graphite inputting Murakami and Endo's formula.

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Sunflower cake with or without enzymatic complex for broiler chickens feeding

  • Berwanger, Eveline;Nunes, Ricardo Vianna;Pasquetti, Tiago Junior;Murakami, Alice Eiko;Oliveira, Taciana Maria Moraes de;Bayerle, Douglas Fernando;Frank, Rafael
    • Asian-Australasian Journal of Animal Sciences
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    • 제30권3호
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    • pp.410-416
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    • 2017
  • Objective: This study was to evaluate the sunflower cake and enzymatic complex fed to broilers from 22 to 42 d of age. Methods: In a completely randomized design, a total of 850 birds were allotted in a $2{\times}5$ factorial scheme (with and without enzymatic complex) and five inclusion levels (0%, 5%, 10%, 15%, 20%) of sunflower cake. There were 5 replications and 17 birds in each experimental unit. Data from performance, carcass yield and intestinal morphology were evaluated. Results: Feed intake, weight gain, final weight and feed:gain ratio linearly worsened as sunflower cake increased. For weight gain, final weight and feed:gain ratio, the birds whose diets contained levels of 15% and 20% of sunflower cake showed worse values (p<0.05) than the birds fed the control diet. When fed the enzymatic complex, birds improved (p<0.05) crypt depth and villus:crypt ratio in the jejunum. As inclusion levels of sunflower cake increased, villus depth and villus:crypt ratio in duodenum, jejunum and ileum linearly reduced and the crypt depth linearly increased. Carcass yield linearly reduced as sunflower cake increased. Conclusion: Based on performance, sunflower cake can be used up to 10% in broilers feeding from 21 to 42 days of age.

약물의 약제학적 연구(제 3보) -${\beta}-$시클로덱스트린과의 복합체 형성에 의한 설파메톡사졸의 용출 및 안정성 향상- (Phamaceutical Studies on the Drug (III) -Enhancement of Dissolution and Stability of Sulfamethoxazole by ${\beta}-Cyclodextrin$ Complexation-)

  • 이현종;김수억;서성훈
    • Journal of Pharmaceutical Investigation
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    • 제18권4호
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    • pp.181-186
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    • 1988
  • Inclusion complex of sulfamethoxazole with ${\beta}-cyclodextrin$ was prepared by freeze-drying method in molar ratios of 1:1, 1:1.25, 1:1.5 and 1:1.75, and the complex formation was identified by ultraviolet and infrared spectroscopies, powder X-ray diffractometry and differential scanning calorimetry. Dissolution rate and solid state stability of the complex were investigated in comparison with those of sulfamethoxazole powder and the physical mixture of sulfamethoxazole with ${\beta}-cyclodextrin$. As a result, the dissolution rate and the stability of solid complexes in various relative humidity conditions increased more remarkably than those of sulfamethoxazole powder and physical mixture. But the difference according to molar ratio of the complex was not recognized.

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Geochemistry of a Te-bearing Au-Ag mineralization of the Yuryang mine: Fluid inclusion and stable isotope study

  • Heo, Chul-Ho;Choi, Seon-Gyu;Pak, Sang-Joon;Choi, Sang-Hoon;Yun, Seong-Taek
    • 대한자원환경지질학회:학술대회논문집
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    • 대한자원환경지질학회 2003년도 춘계 학술발표회 논문집
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    • pp.178-179
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    • 2003
  • Mesothermal, tellurium-bearing gold-silver vein mineralization of the Yuryang mine was formed in mineralogically complex quartz-sulfide veins that filled the fault fractures in Precambrian gneiss within Gyeonggi Massif. Ore grades average 179 g/ton gold with a gold/silver ratio of 1.5 : 1. Ore mineralization was deposited in single stage. Major ore mineralization can be divided into two mineralization phases with increasing paragenetic time: Fe-sulfide and base-metal mineralization phase $\rightarrow$ telluride mineralization phase. (omitted)

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입자 강화 복합재의 등가 열전도 계수에 대한 연구 (A Study on Effective Thermal Conductivity of Particulate Reinforced Composite)

  • 이재곤
    • 동력기계공학회지
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    • 제10권4호
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    • pp.133-138
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    • 2006
  • Effective thermal conductivity of particulate reinforced composite has been predicted by Eshelby's equivalent inclusion method modified with Mori-Tanaka's mean field theory. The predicted results are compared with the experimental results from the literature. The model composite is polymer matrix filled with ceramic particles such as silica, alumina, and aluminum nitride. The preliminary examination by Eshelby type model shows that the predicted results are in good agreements with the experimental results for the composite with perfect spherical filler. As the shape of filler deviates from the perfect sphere, the predicted error increases. By using the aspect ratio of the filler deduced from the fixed filler volume fraction of 30%, the predicted results coincide well with the experimental results for filler volume fraction of 40% or less. Beyond this fraction, the predicted error increases rapidly. It can be finally concluded from the study that Eshelby type model can be applied to predict the thermal conductivity of the particulate composite with filler volume fraction less than 40%.

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Stress Intensity Factors and Kink Angle of a Crack Interacting with a Circular Inclusion Under Remote Mechanical and Thermal Loadings

  • Lee, Saebom;Park, Seung-Tae;Earmme, Youn-Young;Chung, Dae-Youl
    • Journal of Mechanical Science and Technology
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    • 제17권8호
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    • pp.1120-1132
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    • 2003
  • A problem of a circular elastic inhomogeneity interacting with a crack under uniform loadings (mechanical tension and heat flux at infinity) is solved. The singular. integral equations for edge and temperature dislocation distribution functions are constructed and solved numeric-ally, to obtain the stress intensity factors. The effects of the material property ratio on the stress intensity factor (SIF) are investigated. The computed SIFs are used to predict the kink angle of the crack when the crack grows.

ALC 대체를 위한 선발포 경량기포콘크리트의 최적배합 선정 연구 (Study on the Optimal Mix Proportions of Lightweight Foam Concrete for Substitution of ALC )

  • 최선미;김범수;김진만
    • 한국건축시공학회:학술대회논문집
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    • 한국건축시공학회 2023년도 봄 학술논문 발표대회
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    • pp.199-200
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    • 2023
  • This paper presents a study on the selection of optimal mix proportions for producing lightweight pre-foam concrete as a substitute for Autoclaved Lightweight Concrete (ALC) without the accelerated curing. The study was conducted using a rapid hardening binder made from by-products of the steel industry as the primary raw material. The experimental results established the optimal mix proportions, which included retarder content, water/binder ratio, foam content, and fiber inclusion amount, for the production of lightweight foam concrete. The optimal mix proportion was determined to have a retarder content at the minimum amount required to secure the working time, W/B of 35%, a foam content limited to 65% or less, and a fiber inclusion amount of 0.05% or less.

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Enzymatic Hydrolysis of Hydrophobic Triolein by Lipase in a Mone-phase Reaction System Containing Cyclodextrin; Reaction Characteristics

  • Lee, Yong-Hyun;Kim, Tae-Kwon;Shin, Hyun-Dong;Park, Dong-Chan
    • Biotechnology and Bioprocess Engineering:BBE
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    • 제3권2호
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    • pp.103-108
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    • 1998
  • A hydrophobic substrate triolein was hydrolyzed by lipase in a mono-phase reaction system containing cyclodextrin(CD) as emulsifier. The triolein was transformation to an emulsion-like state in the CD containing reaction system in contrast to the oil-droplet like state without CD due to the formation of an inclusion complex between the lipids and CDs. The hydyrolysis reaction increased substantially in the CD containing reaction system, and the optimum reaction conditions including the amount of lipase, ${\beta}$-CD concentration, and mixing ratio of triolein and ${\beta}$-CD, were determined. The performance of the enzyme reaction in a mono-phase reaction system was compared with that of a two-phase reaction system which used water immiscible hexane as the organic solvent. The role of a CD in the mono-phase reaction system was elucidated by comparing the degree of the inclusion complex formation with triolein and oleic acid, Km and Vmax values, and product inhibition by oleic aicd in aqueous and CD containing reaction systems. The resulting enhanced reaction seems to be caused by two phenomena; the increased accessibility of lipase to triolein and reduced product inhibition by oleic acid through the formation of an inclusion complex.

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