• Title/Summary/Keyword: excessive water

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Screening Method for Excessive Water Tolerance at Germinating Stage of Peanut (땅콩 발아기의 내습성 검정 방법)

  • Pae, Suk-Bok;Hwang, Chung-Dong;Lee, Myoung-Hee;Kim, Sung-Up;Oh, Ki-Won;Lee, Byung-Kyu;Baek, In-Youl
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.58 no.4
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    • pp.439-442
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    • 2013
  • This study was conducted to develop the testing method for excessive water tolerance at germinating stage and to screen 31 domestic peanut cultivars. Regardless of peanut grain scales, the amount of seed absorption nearly reached the peak in 10 hours after imbibition. When peanut seed in vermiculate soil was directly soaked in water, ability of emergence did not reduced until 16 days and then sharply reduce to 25 days with non-emergence. When seeds germinated for 1, 2, 3, and 4 days after seeding (DAS) were soaked, the emergence abilities were distinctively varied according to the sequent soaking days such as 1, 2, 3, 4, and 5 days. This explained the negative relationship between first germinating days (DAS) and following soaking days. Using the method of 2 day germinating and 3 day soaking that show less than 70% of emergence ability, 31 peanut cultivars were applied to test excessive water tolerance. Emergence rates varied 0% to 69% according to cultivar. Cultivar Daekwang, Sinkwang, Daecheong and Baekseon had over 50% emergence rates. These results suggested that the degree of water resistance in germinating stage may be important point to evaluate the excessive water resistance among cultivars.

Hematological Changes in Dogs Administrated Excessive Amount of Water Celery Crude Juice (미나리 생즙 투여가 개의 혈액상에 미치는 영향)

  • 김홍태;장혜숙;안병만;김영홍;장광호
    • Journal of Veterinary Clinics
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    • v.18 no.2
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    • pp.105-110
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    • 2001
  • The water celery, Oenanthe Javanica DC., is a perennial herb which mostly grows on a damp ground or a streamside. The water celery is widely distributed in Korea, Japan, china, Taiwan, Indonesia, Malaysia and the other countries. From ancient times, the water celery has widely been used for food or medicine. In herbal medicine, the water celery has a medical actions which are defervescence, diuresis, jaundice, edema, hypotensor, haematic, angiostasis, sthenia, appetizer. Recently, studies on the water celery are briskly being conducted. For example, studies on the morphologic property and classifications of origin of the water celery, studies on the chemical constituents of the water celery which contains vitamins, proteins and amino acids, studies on the bio activities of the water celery which contains flavonoids. However, there is not studies of hematological changes in dogs administrated the water celery until now. Consicontly, this study was conducted to observed the hematological changes in dogs administrated excessive amount of the water celery crude juice for a long period. In this studies, all dogs showed significantly decrease of the PCV and Hb, and increase of the WBC, GSH and reticulocytes, but did not significantly change in the RBC, MCV, MCHC and Met-Hb.

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Control of Excessive Biofilm for the Treatment of High Strength Organic Wastewater by Biofilm Process (생물막공법에 의한 고농도 유기폐수 처리시 생물막 과부착 제어)

  • 임재명;권재혁;한동준
    • Journal of environmental and Sanitary engineering
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    • v.10 no.3
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    • pp.67-77
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    • 1995
  • This study was performed for minimization of excessive biofilm effects at the high strength organic wastewater treatment. As a results of biofilm attachment experiment using piggery wastewater, aggravation of water quality due to excessive biofilm showed after 15 days of operating times.4 excessive biofilm phase, the equivalent biofilm thickness and VSS contents per unit aura were observed in the range of 1,100 to $1,200{\mu}m$ and 2.5 to 3.0mg $VSS/cm^{2}$, respectively. In the aerobic fixed biofilm reactor/anoxic fixed biofilm reactor(AFBR/ANFBR) process with endogenous respiration phase, the BOD removal efficiency was obtained more than 90 percentage at the surface loading rate and volumetric loading rate of the AFBR maintained less than 17 g $BOD/m^{2}{\cdot}$day and 1.7kg $BOD/m^{3}{\cdot}$day, respectively. The removal efficiency of TKN and $NH_{3}$-N at the loading rates below 5.60g $NH_{3}-N/m^{2}{\cdot}day$ and 0.56kg $NH_{3}-N/m^{3}{\cdot}$day were above 76 percentage and 82 percentage, respectively. In order to reduced sludge production rate and aggravation of water quality, endogenous respiration phase was accepted at first AFBR reactor. As a results of this operating condition, sludge production was minimized and removal efficiency was maintained stability.

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Change of Electric Conductivity in Blood of Acute Water Intoxication Cattle Caused by Forced Administration of Excessive Water (강제급수에 기인한 급성 물 중독우에 있어서 혈액전기전도도의 변화)

  • Lee Bang-whan;Bahk Young-woo;Min Byeong-man;Han Mi;Lee chae-min
    • Journal of the korean veterinary medical association
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    • v.26 no.1
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    • pp.32-37
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    • 1990
  • Clinical signs and electric conductivity(EC) of blood were serutinzed for the detection of the cattle being afflicted with forced administration of excessive water or salt water in an abattoir. Test animais were divided into 3 groups such as 10 normal cat

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Effect of Excessive Addition of Organic Admixtures on the Properties of Concrete (콘크리트용 유기혼화제의 과잉첨가 효과)

  • 최재진;박원태;김기형;최연왕
    • Proceedings of the Korea Concrete Institute Conference
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    • 1999.04a
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    • pp.631-637
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    • 1999
  • Effect of excessive addition of water reducing agent was examined by concrete tests. Water reducing agents of lignin or naphtalene base were used in the experiment. Setting of concrete was retarded according to the increase of dosage of water reducing agent and was extremely delayed at the 3 times or more use of lignin base agent and near 5 times or more use of naphtalene base agent respectively. When water reducing agent was used more than 6 times of standard dosage, early strength of concrete was very low and the strength reduction was very severe at all test ages in the concrete using lignin base agent.

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Investigation on the Excessive Vibration of A Mixer Facility in A Water Purification Plant (정수장용 교반기 시설의 과진동 원인 분석)

  • Park, Jin-Ho;Lee, Jeong-Han;Kim, Bong-Soo;Kang, Mun-Hu;Kim, Dong-Soo;Joo, Yoon-Sik
    • Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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    • 2002.11b
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    • pp.312-316
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    • 2002
  • Recently, mixers are being widely used in the water purification plant in order to increase the filtration efficiency. It has been found that a severe vibration was being felt on a upper structure of a mixer facility during steady state operation. The cause of the excessive vibration of the structure to which the mixer's shaft is supported has been evaluated through modal analysis on the shaft and vibration measurements during operation. The fundamental natural frequency of the mixer's shaft is found to be around 1.8 Hz and the main vibratory frequency around 30 Hz. It has been tuned out that the main vibratory frequency, 30 Hz is coincident with the fundamental holding frequency of the upper structure, and that the acceleration signal of the upper structure and the displacement signal of the mixer's shaft showed highly coherent to each other. Accordingly, it reveals that the main cause of the excessive vibration is due not to the mixer's vibration but to the natural frequency of the upper structure excited by flow turbulence.

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Impact of Salt Intake on Red and Fallow Deer Production in Australia - Review -

  • Ru, Y.J.;Glatz, P.C.;Miao, Z.H.
    • Asian-Australasian Journal of Animal Sciences
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    • v.13 no.12
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    • pp.1779-1787
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    • 2000
  • Southern and south-western Australia is a typical mediterranean environment, characterised by wet, cold winters and dry, hot summers. The evaporation rate varies significantly in summer, resulting in a high salinity of drinking water for grazing animals. In addition, a large amount of land in the cropping areas is affected by salt. Puccinellia, tall wheat grass and saltbushes have been planted to improve the soil condition and to supply feed for grazing animals. Animals grazing these areas often ingest an excessive amount of salt from soil, forage and drinking water which can reduce feed intake, increase the water requirement, depress growth and affect body composition as demonstrated in sheep. While the deer industry has been successfully developed in these regions, the potential impact of excessive salt intake on deer production is unknown. The salt tolerance has been well defined for sheep, cattle and other livestock species, but the variation between animal species, breeds within species, maturity status and grazing environments makes it impossible to apply these values directly to deer. To optimise deer production and effectively use natural resources, it is essential to understand the salt status of grazing deer and the impact of excessive salt intake on growth and reproduction of deer.

Molecular Dynamics Study of Anion Conducting Ionomer under Excessive Water Condition (과량의 수화상태에서 음이온 전도성 이오노머의 분자동역학 전산모사 연구)

  • Hoseong, Kang;So Young, Lee;Hyoung-Juhn, Kim;Chang Hyun, Lee;Chi Hoon, Park
    • Membrane Journal
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    • v.32 no.6
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    • pp.475-485
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    • 2022
  • The continuous excessive consumption of fossil fuels is causing global warming, climate, and environmental crisis. Accordingly, hydrogen energy attracts attention among alternative energies of fossil fuels, because it has the advantage of not emitting pollutants and not having resource restrictions. Therefore, various studies are being conducted on a water electrolysis system for producing hydrogen and a fuel cell system for producing electricity by using hydrogen energy as a fuel. In this study, 3D ionomer models were produced by reflecting the excessive water condition of an anion-conductive ionomer material, which is one of the core materials of water electrolysis systems and fuel cells. Finally, by analyzing the structural stability and performance of the ionomer under an excessively hydrated condition, we suggested a performance improvement factor in the design of an anion conductive ionomer, a key material for water electrolysis systems and fuel cells.

Investigation on the Excessive Vibration of A Mixer Facility in A Water Purification Plant (정수장용 교반기 시설의 과진동 원인 분석)

  • Park, Jinho;Lee, Jeong-Han;Kim, Bong-Soo;Kang, Mun-Hu;Kim, Dong-Soo;Joo, Yoon-Sik
    • Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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    • 2002.11a
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    • pp.336.1-336
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    • 2002
  • Recently, mixers are being widely used in the water purification plant in order to increase the filtration efficiency. The cause of an excessive vibration of a base structure to which the mixers are supported, has been evaluated through modal analysis on the mixer shaft and vibration measurements during operation. The fundamental natural frequency of the mixer shaft is found to be around 1.8 Hz and the main vibratory frequency around 30 Hz. (omitted)

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