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Interspecific Differences of the Capacities on Excessive Soil Moisture Stress for Upland Crops in Converted Paddy Field

  • Jung, Ki-Yuol;Choi, Young-Dae;Chun, Hyen-Chung;Lee, Sanghun;Kang, Hang-Won
    • Korean Journal of Soil Science and Fertilizer
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    • v.49 no.2
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    • pp.157-167
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    • 2016
  • The interspecific estimation for tolerance capacities of upland crop species to excessive soil water stress in paddy field is significant in agricultural practices. Most of upland crops can be damaged by either excessive soil water or capillary rise of the water table during rainy season in paddy fields. The major objective of this study was to evaluate water stress of upland crops under different drainage classes in converted paddy field. This experiment was carried out in poorly drained soil (PDS) and imperfectly drained soil (IDS) of alluvial sloping area located at Toero-ri, Bubuk-myeon, Miryang-si, Gyeongsangnam-do. The soil was Gagog series, which was a member of the fine silty, mixed, nonacid, mesic family of Aeric Endoaquepts (Low Humic-Gley soils). Two drainage methods, namely under Open ditch drainage methods (ODM) and, Closed pipe drainage methods (PDM) were installed within 1-m position at the lower edge of the upper paddy fields. The results showed that sum of excess water days ($SWD_{30}$), which was used to represent the moisture stress index, was 42 days (the lowest) in the PDM compared with 110 days in the ODM. Most of upland crops were more susceptible to excessive soil water during panicle initial stage on more PDS than on IDS. Yield of upland crops in the PDM was continuously increased by the rate of 15.1% on sorghum, 15.4% foxtail millet, 53.6% proso millet, 49.6% soybean and 47.9% adzuki bean as compared in the ODM. The capacity for tolerance by excessive soil water based on yield of each upland crop in the poorly drained sloping paddy fields was the order of sorghum, soybean, foxtail millet, proso millet and adzuki bean. Therefore, Sorghum is relatively tolerant to excessive soil water conditions and, may be grown successfully in converted paddy field.

Studies on the Prevention of Excessive Drying Leaves during Burley Tobacco Curing III. Effect of the Ventilating Conditions on the Occurrence of Excessive Curing Leaves (버어리종 건조시 급건엽발생방지에 관한 연구 III. 환기조건이 급건엽발생에 미치는 영향)

  • 배성국
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.32 no.2
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    • pp.130-136
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    • 1987
  • The studies were carried out to investigate the occurrence of excessive dried leaves during burley tobacco curing. Six different periods of ventilation during the entire stage of curing were applied. And also 3 different heights of rolling up polyethlene film for side ventilation of the curing house combined with 4 different spaces between garlands were applied from after yellowing. The high air temperature and low relative humidity from end of yellowing to end of browning stage were the most critical to occur excessive dried \eaves. As side ventilation was continued for the entire stage of curing, air temperature in curing house was lower and occurrence of excessive dried leaves were remarkably decreased. The air temperature was not affected on hanging spaces, but relative humidity that resulted significantly in decreasing of the excessive dried leaves was increased by narrowing of hanging spaces. As excessive dried leaves were increased, its price per kg was lower, its physical properties was worse and its total nitrogen and total suger were higher than those of normal cured leaves.

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A Study on the Reduction Methods of Sheath Circulating Current using the Reduction Equipment in Underground Transmission Systems (지중송전계통에서 저감장치를 이용한 시스 순환전류 저감방안에 관한 연구)

  • Gang, Ji-Won;Yang, Hae-Won
    • The Transactions of the Korean Institute of Electrical Engineers A
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    • v.51 no.9
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    • pp.474-481
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    • 2002
  • Sheath circulating current is increased in the change of sheath mutual impedance which is caused by unbalanced cable system, and different section length between joint boxes. If excessive current flows in sheath, sheath loss which is reduced the transmission capacity is produced. Recently, excessive sheath circulating current was partially measured in underground cable systems of KEPCO. Accordingly, actual schemes to reduce excessive sheath circulating current are urgently required for installed cable system as well as newly-installing cable systems. This paper describes the relation analysis of sheath circulating current and burying types. And also, various schemes to reduce excessive circulating current using EMTP/ATPDraw and applicable schemes are proposed through a detailed analysis regarding cable systems by considering various electrical and environmental factors. It is evaluated that the proposed reduction schemes can be effectively applied to reduce the excessive sheath circulating current with the minimized electrical problems. And reduction effect is Proved with sheath circulating current reduction equipment.

Comparison of Draft Map and Digital Map for Analysis of Areas and Populations of Excessive Noise Exposure from Noise Maps (도화원도와 수치지도를 이용한 소음지도의 초과소음노출 면적 및 인구에 대한 비교 분석)

  • Yeon, Jung-Hum;Lee, Byung-Chan
    • Transactions of the Korean Society for Noise and Vibration Engineering
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    • v.22 no.2
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    • pp.156-162
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    • 2012
  • This paper presents differences of road traffic noise maps were generated by using the draft map and two digital maps with different versions. As a first step, the calculation of the areas of excessive noise exposure was made for the draft map and each digital map version. Subsequently, the areas of excessive noise exposure were compared so as to determine how different from each other. Then, comparison of the populations exposed to excessive noise was also conducted in the same way. It was found that the most accurate noise map was obtained when using the combination of the draft map containing all attribute information and the digital map Ver 2.0. This result indicates that more information on the height and the number of floors of the individual building is required in order to obtain more accurate population exposed to excessive noise, thus creating a more accurate noise map.

Experimental Study of Excessive Yaw Motion of Turret Moored Floating Body (터렛 계류된 부유체의 과대 선수동요에 관한 실험 연구)

  • Cho, Seok-Kyu;Sung, Hong-Gun;Hong, Jang-Pyo;Choi, Hang-Shoon
    • Journal of the Society of Naval Architects of Korea
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    • v.50 no.1
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    • pp.8-13
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    • 2013
  • Excessive yaw motion of a turret moored vessel was examined in this paper. The vessel was moored by an internal turret and catenary mooring lines. The experiments were conducted in regular waves. Turret moored vessel can oscillate from side to side or move to one particular direction, and eventually exhibit large yaw motion. The results showed that the excessive yaw occured for specific condition, ratio of wave lengths and vessel length. It was found that turret moored floating vessel was unstable for regular wave period from 14 to 18 sec and excessive yaw occurred to maximum 50 deg. The time series, trajectory, phase plot and qualitative analysis are performed. The analysis showed that the results of experiments agreed with the that of analytic method and the excessive yaw could be predicted by the stability analysis.

A Case Study of Three Patients who have the idiopathic Excessive sweating on palm and sole (특발성(特發性) 수족(手足) 다한증(多汗症) 환자(患者)에 대한 증례보고(證例報告) - 태음인(太陰人), 소음인(少陰人), 소양인(少陽人) -)

  • Kim, Jeong-Ho;Shin, Dong-Yun;Choi, Dae-Seong;Kang, Se-Il;Song, Jeong-Mo
    • Journal of Sasang Constitutional Medicine
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    • v.16 no.2
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    • pp.122-127
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    • 2004
  • 1. Objectives The Excessive sweating or Hyperhidrosis is a state of abnormal sweating on palm, sole and axillary region. But we do not know the exact cause and the healing method of that. It is known that the only treatment of Excessive sweating is surgical sympathectomy and a thoracic sympathetic gan-glion block with neurolytics. 2. Methods We have three case-reports of the patients who have the excessive sweating. 3. Results In this study the patients classified by Sasang constitutional medicine had a notable medical effects. And in the result, any symptom is not remained. 4. Conclusions So we report the healing processes and results of these patients in this study.

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Physiological Response of Soybean under Excessive Soil Water Stress during Vegetative Growth Period (콩의 영양생장기 습해처리 기간중 생리적 반응)

  • Choi, Kyung-Jin;Lee, Hong-Seok;Kwon, Yong-Woong
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.40 no.5
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    • pp.594-599
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    • 1995
  • Generally, excessive soil water stress in vegetative growth stage inhibits the growth of soybeans. Leaf area expansion of the plant during excessive soil water stress was only half and the respiration of roots was much diminished compared with the plant none water stress. When excessive soil water stress to the soybeans was continued for 7 days, outer epidermis and vascular system of tap root were severely cracked, more than thirty-five percent of nodule was died and the bacteroid layers of alive nodule were disintegrated.

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Review of Changing Judging Standards for Bodybuilding and Fitness Competition Category

  • Sang-Hyun Lee
    • International journal of advanced smart convergence
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    • v.12 no.4
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    • pp.418-425
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    • 2023
  • This study examined the importance of screening for changing bodybuilding and fitness category. The screening criteria for bodybuilding, the background and reason for the creation of new bodybuilding and fitness items, the screening criteria for new items, and the use of drugs were described. The current bodybuilding gives high marks to excessive muscles and excessive diet conditions, and new bodybuilding category have been newly established in line with the recent global trend of pursuing natural beauty over abnormally excessive muscles, and the screening criteria also prioritize the balance of ideal and overall muscles to fit your height and weight. In addition, fitness events such as physique and bikini are gaining popularity with the establishment because they focus on not excessive muscles and natural elements of the body that ordinary people can challenge. Since athletes as well as ordinary people are using drugs to increase muscles and suffer side effects, IFBB(International Federation of BodyBuilding) and KBBF(Korea Body Building Federation) should consider and improve the current bodybuilding screening standards that avoid excessive muscles, and it is believed that bodybuilding and fitness events will develop only when strict punishment and continuous anti-doping education are carried out.

Diagnosis of Excessive Vibration Signals of Two-Pole Generator Rotors in Balancing

  • Park, Jong-Po
    • Journal of Mechanical Science and Technology
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    • v.14 no.6
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    • pp.590-596
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    • 2000
  • Cause of excessive vibration with twice the rotational speed of a two-pole generator rotor for the fossil power plants was investigated. The two-pole generator rotor, treated as a typically asymmetric rotor in vibration analysis, produces asynchronous vibration with twice the rotational speed, sub-harmonic critical speeds, and potentially unstable operating zones due to its own inertia and/or stiffness asymmetry. This paper introduces a practical balancing procedure, and presents the results of the investigation on sources of the excessive vibration based on the experimental vibration data of the asymmetric two-pole rotor in balancing.

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Behavior of Excessive Pore Water Pressure with Embankment on Soft Ground (연약지반의 성토에 따른 과잉간극수압의 거동)

  • 김지훈;강예묵;이달원;임성훈
    • Proceedings of the Korean Society of Agricultural Engineers Conference
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    • 1999.10c
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    • pp.588-593
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    • 1999
  • This study were performed to investigated the behavior of excessive pore water pressure with embankment of soft clay. The dissipation behavior of excessive pore water pressure in the improved and non-improved area was used to compare and alyze with lateral displacement , and to investigated the applicability of the methods for stability evaluatio of soft clay. The behavior of excess pore water pressure could be used to the fundamental data for stability evaluation, and the evaluation of the stability of embankment was recommended to use the indlination of curve rather than critical line.

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