• Title/Summary/Keyword: Dry heat

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Comparative Calorimetric Evaluation of Ammoniated Straw-Based Rations Supplemented with Low Levels of Untreated and Formaldehyde Treated Groundnut Cake and Fish Meal with Respect to Growing Buffalo Calves

  • Tiwari, C.M.;Jadhao, S.B.;Chandramoni, Chandramoni;Murarilal, Murarilal;Khan, M.Y.
    • Asian-Australasian Journal of Animal Sciences
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    • v.13 no.6
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    • pp.761-773
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    • 2000
  • Eighteen growing male Murrah buffalo (Bubalus bubalis) calves were divided into three groups consisting of six animals each and fed three urea ammoniated wheat straw (UAS) -based rations supplemented with concentrate mixtures (roughage: concentrate ratio 58:42) containing deoiled ground nut cake, GNC (8%), formaldehyde treated GNC (8%) or fish meal (8%) to undertake comparative evaluation of these rations in terms of their $CH_4$ production and growth (285 d duration) potential. A digestibility trial (10 d duration) was followed by a comparative calorimetric study in respiration chamber. Dry matter (DM) intake (84.3 to $89.3g/kg\;W^{0.75}d^{-1}$) did not differ between treatments. The digestibility coefficient of DM, organic matter (OM), crude protein (CP), neutral and acid detergent fiber did not differ significantly in different diets. Urinary energy loss as a percent of gross energy (GE) was not affected by diets. Average values of $CH_4$ production were 84.3, 77.6 and 99.1 g/d and $CH_4$ energy losses as percent of gross energy were 5.7, 5.2 and 6.1 percent on .GNC, formaldehyde treated GNC and fishmeal, respectively, and did not differ significantly. When expressed per unit of digestible OM intake, $CH_4$ production (g) was lower (p<0.05) on formaldehyde treated GNC (30.6) than on untreated GNC (30.6) and fish meal (31.9). Total ME intake and heat production were similar and hence the energy balances on different diets were similar. Nutritive value of rations in terms of digestible CP and ME were similar. Average daily gain calculated on the basis of regression of fortnights on cumulative liveweight gain in calves fed on concentrate containing unprotected GNC, protected GNC and fish meal were 437.1, 483.9 and 481.6 g, respectively. This indicated that the intake of energy was sufficient to meet the requirement of calves growing at 400 g per d. However, CP intake was around 150% of the stipulated standard (Kearl, 1982). Feed conversion ratios on unprotected GNC, protected GNC and fish meal were 11.60, 11.10 and 10.4 respectively. It was concluded that because significantly (p<0.05) low $CH_4$ is produced on protected GNC (8%), it is very good and sustainable protein source in comparison to poor quality fish meal and untreated GNC to be used in concentrate mixture for supplementing UAS-based diets.

Influence of Mixtures and Curing Conditions on Strength and Microstructure of Reactive Powder Concrete Using Ternary Pozzolanic Materials (배합 및 양생조건이 3성분계 포졸란재를 이용한 RPC의 강도발현 특성에 미치는 영향)

  • Janchivdorj, Khulgadai;Choi, Seung-Hoon;So, Hyoung-Seok;Seo, Ki-Seog;So, Seung-Young
    • Journal of the Korea Concrete Institute
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    • v.25 no.4
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    • pp.457-465
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    • 2013
  • This study discussed the influence of mixtures and curing conditions on the development of strength and microstructure of RPC using ternary pozzolanic materials. Through pilot experiment, various RPC was manufactured by adding single or mixed ternary pozzolanic materials such as silica fume, blast furnace slag and fly ash by mass of cement, up to 0~65%, and cured by using 4 types of method which are water and air-dried curing at $20^{\circ}C$, steam and hot-water curing at $90^{\circ}C$. The results show that the use of ternary pozzolanic materials and a suitable curing method are an effective method for improving development of strength and microstructure of RPC. The unit volume of cement was greatly reduced in RPC with ternary pozzolanic materials and unlike hydration reaction in cement, the pozzolanic reaction noticeably contributes to a reduction in hydration heat and dry shrinkage. A considerable improvement was found in the flexural strength of RPC using ternary pozzolanic materials, and then the utilization of a structural member subjected to bending was expected. The X-ray diffractometer (XRD) analysis and Scanning Electronic Microscope (SEM) revealed that the microstructure of RPC was denser by using the ternary pozzolanic materials than the original RPC containing silica fume only.

Influence of Temperature on Chloride Ion Diffusion of Concrete (콘크리트의 염화물이온 확산성상에 미치는 온도의 영향)

  • So, Hyoung-Seok;Choi, Seung-Hoon;Seo, Chung-Seok;Seo, Ki-Seog;So, Seung-Young
    • Journal of the Korea Concrete Institute
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    • v.26 no.1
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    • pp.71-78
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    • 2014
  • The long term integrity of concrete cask is very important for spent nuclear fuel dry storage system. However, there are serious concerns about early deterioration of concrete cask from creaking and corrosion of reinforcing steel by chloride ion because the cask is usually located in seaside, expecially by combined deterioration such as chloride ion and heat, carbonation. This study is to investigate the relation between temperature and chloride ion diffusion of concrete. Immersion tests using 3.5% NaCl solution that were controlled in four level of temperature, i.e. 20, 40, 65, and $90^{\circ}C$, were conducted for four months. The chloride ion diffusion coefficient of concrete was predicted based on the results of profiles of Cl- ion concentration with the depth direction of concrete specimens using the method of potentiometric titration by $AgNO_3$. Test results indicate that the diffusion coefficient of chloride ion increases remarkably with increasing temperature, and there was a linear relation between the natural logarithm values of the diffusion coefficients and the reciprocal of the temperature from the Arrhenius plots. Activation energy of concrete in this study was about 46.6 (W/C = 40%), 41.7 (W/C = 50%), 30.7 (W/C = 60%) kJ/mol under a temperature of up to $90^{\circ}C$, and concrete with lower water-cement ratio has a tendency towards having higher temperature dependency.

Flame and Carbonization Patterns of Animal-Origin Foods Ignited by Overheating (과열에 의해 발화된 동물성 식품의 화염 및 탄화 패턴에 관한 연구)

  • Lee, Jeong-Hun;Choi, Chung-Seog
    • Fire Science and Engineering
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    • v.33 no.6
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    • pp.126-131
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    • 2019
  • Real-scale fire tests were performed on animal-origin foods using a gas stove with no overheating prevention device. When the animal-origin foods were ignited, a large quantity of white smoke and steam was generated from them; however, when they became dry and began to carbonize, a dark smoke was generated. Even after the gas stove was overheated for more than 5400 s, mackerel, pollack, chicken, etc., did not ignite. However, pork, beef, and tuna caught fire after 2643 s, 2819 s, and 6492 s of heating, respectively. The flame patterns of animal-origin foods were in the forms of a mixed laminar flow and a turbulent flow, and a halo pattern was produced. A sand glass form of the flame pattern was generated when a kitchen hood was operated, but a triangular flame pattern was produced when the kitchen hood was not operated. When the tuna in the pot was overheated, it spontaneously ignited after 6492 s, with the surface temperature of the kitchen hood rapidly rising to 464.5 ℃. Moreover, the temperature at the back of the pot, which was 6 cm away from the outer surface of the upper part of the pot, was 869 ℃ after 6660 s because of the radiant heat. The flame formed a sand glass pattern on the kitchen wall. When the kitchen hood was not operated, or when the flame grew lower than the height of the ceiling, a triangular pattern was formed.

Effect of Dietary Supplementation of Glutathione on Blood Biochemical Changes and Growth Performances of Holstein Calves

  • Kim, Jong-Hyeong;Mamuad, Lovelia L.;Lee, Hyun-June;Ki, Kwang-Seok;Lee, Wang-Shik;Ha, Jong-K.;Lee, Sang-Suk
    • Asian-Australasian Journal of Animal Sciences
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    • v.24 no.12
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    • pp.1711-1717
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    • 2011
  • The objective of this experiment was to evaluate the effect of dietary supplementation of glutathione (GSH) on health, solid feed consumption, nutrient intake, body weight gain (BWG), feed efficiency, blood metabolites and the occurrence of diarrhea in Holstein neonatal calves. The calves were fed plain milk as a control (CON) or milk with GSH supplementation. Sixteen calves were separated from their mothers immediately after birth, moved into individual cages and fed colostrum for the first three days. For GSH supplementation, three grams of GSH powder were mixed in 1.8 L of heat-treated milk and placed in a plastic bottle with a rubber nipple. The calves were fed GSH-supplemented milk only once out of four daily feedings. For the first 25 d, calves were fed 1.8 L of milk four times per day. Milk feeding frequency was reduced to three times per day from days 26 to 30, followed by twice a day from days 31 to 44, and once a day from days 45 to 49, after which they were weaned at day 50. Body weight gain (BWG), feed consumption, and growth performance were monitored until day 70. The dietary supplementation of GSH had no effect on daily feed intake and growth performance in growing calves. Hematological results revealed red blood cell distribution width (RDW) was lower, and mean corpuscular volume (MCV) was significantly higher in calves fed GSH. Serum lactate dehydrogenase (LDH) concentrations were lower in calves fed GSH. Rectal temperature at day 70 was higher in calves that did not receive GSH, while mean frequency of diarrhea and enteritis was less in calves fed GSH. It is concluded from the present study that BW gain, total dry matter intake (DMI), feed efficiency, and breathing rate did not differ between groups. However, there were some positive blood parameters and the mean frequency of diarrhea and enteritis was less in calves fed GSH compared to CON which did not receive GSH. With the results obtained, supplementation of GSH is highly recommended.

A literatural study on the atrophy syndrome(?證) (위증(?證)에 관(關)한 문헌적(文獻的) 고찰(考察) -병인병기(病因病氣), 치법(治法) 및 치방(治方) 중심(中心)으로 -)

  • Kim, Sung-Soo;Keum, Dong-Ho
    • The Journal of Dong Guk Oriental Medicine
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    • v.7 no.2
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    • pp.81-95
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    • 1999
  • Among oriental medicine,s literatures, through Hwang-Je-Nae-Kyung(黃帝內徑) to Chung(淸), I extracted contents related to atrophy syndrome(?證). And studied it,s pathophysiology, therapy and treatment. Then, I concluded that result same below 1. The pathophysiologies of atrophy syndrome are lung heat(肺熱) & decreasing of it,s circulation, making liver and stomach weaken & difficulty it's circulation, injurious to liver and kidney & atrophy of bonemarrow and muscle. 2. The most important point of atrophy syndrome therapy is Yang-Myung(陽明). The Priority of therapy is stomach & liver,s balance. And then we must protect acquired human function & clean humidity & temperature of Yang-Myung(陽明). under the principle of decreasing south organ,s function & protecting north organ,s function, we should Ja-Yeum-Chung-Yeul(滋陰淸熱). so remove temperature of lung & protect liver and kidney & make strong stomach. 3. Among the therapy of atrophy syndrome in literatures Yi-Jin-Tang(二陳湯), Sa-Gun-Ja-Tang(四君子湯), Sa-Mul-Tang-Je(四物湯劑), Ho-Jam-Hwan(虎蠶丸), Dong-Won-Geun-Bo-Hwan(東垣健步丸) and Chung-Jo-Tang(淸燥湯) were many. These make strong spleen & dry humidity organ using Sa-Gun-Ja-Tang(四君子湯)and Yi-Jin-Tang(二陳湯) by Dog-Cheu-Yang-Myung(獨取陽明) method. Sa-Mul-Tang(四物湯), Phellodendri cortex(黃柏), Radix sophorae flavescentis(苦蔘), Carapax Testudinis(龜板) bitter taste make strong Yeum(陰) & decrease Yang(陽) so important human muscle powerful. Ho-Jam-Hwan(虎蠶丸), Dong-Won-Geun-Bo-Hwan(東垣健步丸), Chung-Jo-Tang(淸燥湯) make Chung-Yeul-Jo-Seup(淸熱燥濕), protect liver and kidney & strong muscle and bone. Besides Gum-Gang-Hwan(金剛丸), Yi-Myo-Hwan(二妙丸), Nok-Gak-Geu-Hwan(鹿角膠丸)&Ga-Mi-Sa-Geun-Hwan(加味四斤丸) were used in treatment of atrophy syndrome.

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Effect of the Moisture Content and Pellet Mill Type on the Physical and Chemical Characteristics of Italian ryegrass Pellet (펠렛밀과 수분함량이 이탈리안 라이그라스 펠렛의 물리적 특성 및 화학적 성상에 미치는 영향)

  • Moon, Byeong Heoun;Shin, Jong Seo;Park, Hyung Soo;Park, Byeong Ki;Kim, Jong Geun
    • Journal of The Korean Society of Grassland and Forage Science
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    • v.36 no.4
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    • pp.271-279
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    • 2016
  • The objective of this study was to determine the effect of the moisture content and pellet mill type on the physical and chemical characteristics of Italian ryegrass (IRG) pellet. Moisture content of raw material significantly (p<0.05) affected IRG pellet formation. Moisture content at 25% was the best condition for IRG pellet formation in terms of shape, power load and temperature changes. The hardness of pellet was decreased when moisture content was increase. However, the hardness of pellet was not affected by pellet mill type. Moisture content at 30% dramatically (p<0.05) decreased the durability compared to moisture content at 25%. Dry matter content of IRG pellet was increased (p<0.05) after pelleting. Total count of microorganism was decreased in pellet due to pressure heat and moisture losses during the pelleting process. These results indicated that the proper moisture content of Italian ryegrass pelleting would be at 25%. In addition, Roll & flat die type would be more suitable than Ring die and Die & flat die type in IRG pelleting. Pelleting works would be beneficial for improving forage quality and long storage.

Effects of Ambient Temperature on Growth Performance, Blood Metabolites, and Immune Cell Populations in Korean Cattle Steers

  • Kang, H.J.;Lee, I.K.;Piao, M.Y.;Gu, M.J.;Yun, C.H.;Kim, H.J.;Kim, K.H.;Baik, M.
    • Asian-Australasian Journal of Animal Sciences
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    • v.29 no.3
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    • pp.436-443
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    • 2016
  • Exposure to cold may affect growth performance in accordance with the metabolic and immunological activities of animals. We evaluated whether ambient temperature affects growth performance, blood metabolites, and immune cell populations in Korean cattle. Eighteen Korean cattle steers with a mean age of 10 months and a mean weight of 277 kg were used. All steers were fed a growing stage-concentrate diet at a rate of 1.5% of body weight and Timothy hay ad libitum for 8 weeks. Experimental period 1 (P1) was for four weeks from March 7 to April 3 and period 2 (P2) was four weeks from April 4 to May 1. Mean ($8.7^{\circ}C$) and minimum ($1.0^{\circ}C$) indoor ambient temperatures during P1 were lower (p<0.001) than those ($13.0^{\circ}C$ and $6.2^{\circ}C$, respectively) during P2. Daily dry matter feed intake in both the concentrate diet and forage groups was higher (p<0.001) during P2 than P1. Average daily weight gain was higher (p<0.001) during P2 (1.38 kg/d) than P1 (1.13 kg/d). Feed efficiency during P2 was higher (p = 0.015) than P1. Blood was collected three times; on March 7, April 4, and May 2. Nonesterified fatty acids (NEFA) were higher on March 7 than April 4 and May 2. Blood cortisol, glucose, and triglyceride concentrations did not differ among months. Blood CD4+, CD8+, and CD4+CD25+ T cell percentages were higher, while CD8+CD25+ T cell percentage was lower, during the colder month of March than during May, suggesting that ambient temperature affects blood T cell populations. In conclusion, colder ambient temperature decreased growth and feed efficiency in Korean cattle steers. The higher circulating NEFA concentrations observed in March compared to April suggest that lipolysis may occur at colder ambient temperatures to generate heat and maintain body temperature, resulting in lower feed efficiency in March.

Review of effect on Okchun-hwan for Diabetes Mellitus (당뇨병에 대한 옥천환(玉泉丸)의 효과에 관한 고찰)

  • Kim, Bum Joon;Bae, Go Eun;Choi, Jin Yong;Cho, Jae Hyun;Park, Hye Lim;Hong, Mi Na;Kwon, Jung Nam;Kim, So Yeon;Yun, Young Ju;Lee, In;Choi, Jun Yong;Han, Chang Woo;Hong, Jin Woo;Park, Seong Ha
    • Journal of Physiology & Pathology in Korean Medicine
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    • v.31 no.1
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    • pp.20-24
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    • 2017
  • The aim of this study is to investigate the effect of Okchun-hwan on Diabetes Mellitus. We searched articles from Oasis and Chinese Academic Journals(CAJ) online databases. Searching keywords were '玉泉丸', '옥천환'. Among the articles published from January 2000 to September 2016, The 79 articles were found. After review the title, abstract and original, The five articles were selected finally to rule out a completely different prescriptions and an animal test articles. Okchun-hwan is effective in improving the symptoms(dry mouth and throat, fatigue, eat easy to hunger, shortness of breath, sweating, palpitation, cardiac heat, insomnia, and tongue)of a patient with deficiency of both qi and yin diagnosis(氣陰兩虛證) on Diabetes Mellitus, as well as act on protection of endothelial cells and regulation of insulin sensitivity, insulin resistance that cause the diabetic chronic vascular complications.

Analysis on Rainwater Harvesting System as a Source of Non-Potable Water for Flood Mitigation in Metro Manila (마닐라의 홍수저감을 위한 잡용수 대체자원으로서의 가정용우수저류시설 분석)

  • Necesito, Imee V.;Felix, Micah Lourdes A.;Kim, Lee-Hyung;Cheong, Tae Sung;Jeong, Sangman
    • Journal of Wetlands Research
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    • v.15 no.2
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    • pp.223-231
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    • 2013
  • Excessive precipitation, drought, heat waves, strong typhoons and rising sea levels are just some of the common indicators of climate change. In the Philippines, excessive precipitation never failed to devastate and drown the streets of Metro Manila, a highly urbanized and flood-prone area; such problems are expected to occur frequently. Moreover, the water supply of Metro Manila is dependent only to Angat Reservoir. Rainwater harvesting can serve as an alternative source of raw water and it can mitigate the effects of flooding. The harvested rainwater can be used for: potable consumption if filtered and disinfected; and non-potable consumptions (e.g., irrigation, flushing toilets, carwash, gardening, etc.) if used untreated. The rainfall data were gathered from all 5 rainfall stations located in Metro Manila namely: Science Garden, Port Area, Polo, Nangka and Napindan rain gauge stations. To be able to determine the potential volume of rainwater harvested and the potentiality of rainwater harvesting system as an alternate source of raw water; in this study, three different climatic conditions were considered, the dry, median and wet rainfall years. The frequent occurrence of cyclonic events in the Philippines brought significant amount of rainwater that causes flooding in the highly urbanized region of Metro Manila. Based from the results of this study, the utilization of rainwater harvesting system can serve as an alternative source of non-potable water for the community; and could also reduce the amount of surface runoff that could result to extreme flooding.