• 제목/요약/키워드: date

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수확시기와 횟수에 따른 삼백초 경엽의 생육 및 수량의 경시적 변화 (Change of growth and yield of top part by different harvest date and number in Saururus chinensis bailley)

  • 남상영;김인재;김민자;이철희;김태수
    • 한국자원식물학회지
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    • 제15권2호
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    • pp.159-163
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    • 2002
  • 삼백초의 수확시기와 횟수를 달리함으로써 생육과 경엽수량에 미치는 영향을 구명하여 재배법개선에 필요한 기초자료를 얻고자 시험한 결과를 요약하면 다음과 같다. 1. 1회 수확시의 생육은 7월 16일과 7월 31일 수확에서 가장 왕성하였으며, 2회 수확시는 1회 수확시기가 빠를수록 양호하였다. 2. 상품 경엽수량은 7월 31일까지는 수확시기가 늦을수록 많았으나, 이후 10월 16일에서는 41% 수준으로 감소폭이 컸다. 3. 건물율은 수확시기가 늦을수록 높아지는 경향이었다.

우리나라 식용유지 자원식물의 상관 및 유전력 (Heritability and Correlation Coefficients in Edible Oil Crops in Korea)

  • 이상래
    • 한국자원식물학회지
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    • 제1권1호
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    • pp.1-7
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    • 1988
  • This experiment were carried out to study the heritability, genotypic, pheno-typic and environmental correlation in four edible oil crops. Heritabilities of flowering date, maturing date, plant height and weight of 1, 000 grains in rape were high. A highly significant positive correlation was found between flowering date and maturing date, plant hight and ear length, number of pods per ear and flowering date, maturing date and plant hight, The number of seed per pod showed also significant positive correlation with flowering or maturing date as well as with the relationship between weight of 1, 000 grains and plant height or ear length inrapeseed, respectively. Heritabilities of maturing date, length of stem with eapsule and number of seed per capsule were high, in sesame. Genotypic correlation between plant height and length of stem with capsule, length of stem with capsule and number of capsule per plant, number of capsule per plant and weight of 1, 000 grains, weight of 1, 000 grains and yield were highy positive in sesame. Heritabilities of flowering date, length of main stem, weight of 100 grains and number of shells per square meter in peanut were high, There was positive genotypic correlation between length of main stem and yield, number of shells per quare meter and matured seed ratio, number of shells per square meter and yield, 100 grains weight and yield. On the other hand, a significant negative correlation appeared between flowering date and yield. Heritabilities of days to flowering, stem length, stem diameter and weight of 1, 000 grains in perila were high. There was positive genotypic correlation between stem length and stem diameter, number of pods per plant, stem weight etc, between number of internodes and number of pods per plant, stem weight, number of valid branches and number of pods plant as well, respectively. While, a significant negative correlation was observed between number of valid branches and weight of 1, 000 grains, between number of pods per plant and weight of 1, 000 grains.

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율무의 토양수분별 파종기와 질소시비방법에 따른 주요형질 변이 (Variations of Major Characters on Seeding Dates and Nitrogen Fertilizer under Different Soil Moisture Condition in Adlay)

  • 김용철;임수삼;김성만;이충렬;최인수;박현철
    • 생명과학회지
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    • 제13권6호
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    • pp.757-763
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    • 2003
  • 본 시험은 율무재배에 적절한 토양수분조건과 파종기 및 질소시비방법를 구명하기 위하여 토양수분은 자연강우에 의존하는 밭 상태의 대조구와 인위적으로 포화상태를 유지시키는 관개구로 구분하여 처리하였고, 파종기는 6월 10일, 6월 20일, 6월 30일에 각각 파종하였으며, 질소시비는 전량기비와 파종기 및 출수기에 50%씩 분시하는 방법 등으로 하여 율무의 생육과 수량 및 수량구성요소의 변화를 시험한 결과는 다음과 같다. 파종기가 빠를수록 출수 및 성숙기가 빨랐고, 출수일수는 파종기가 지연될수록 감소하는 경향이었으며 성숙일수는 처리간 차이가 인정되지 않았다. 토양수분은 관개구에서 자란 율무가 대조구에서 자란 율무에 비하여 간장과 경태는 컸으며, 파종기가 빠를수록 현저하게 증가하였고, 분얼수도 대조구에 비해 관개구에서 현저한 증가를 보였으며 만파할수록 분얼수가 감소하였다. 지상과 지하부의 생육은 관개구가 대조구에 비하여 왕성한 생육을 보였으며, 파종기가 지연될수록 현저하게 감소하는 경향이었다 개엽 광합성속도는 대조구에 비하여 관개구가 훨씬 높았으며, 엽고병 발병율은 관개구가 낮았다. 관개구가 대조구보다 천립중이 무거웠고 수량은 증가하였으며, 불임율은 관개구가 대조구보다 낮았고, 파종기가 빠를수록 천립중이 무거웠고 수량도 증가하였다.

쌀가루 가공용 벼 품종의 수발아 발생 감소를 위한 적합 이앙시기 설정 (Investigation of the Ptimum Transplanting Date for Floury Endosperm Rice to Reduce the Viviparity Rate)

  • 황운하;최명구;정재혁;이현석;양서영;이충근
    • 한국작물학회지
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    • 제66권4호
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    • pp.289-296
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    • 2021
  • 쌀가루 가공용벼 품종인 한가루, 설갱, 신길 및 바로미2의 수발아 발생 위험을 감소하기 위한 지역별 적합 이앙기 및 이에 따른 등숙기 생육온도, 수발아 발생 위험성을 변화를 분석한 결과는 다음과 같다. 1. 쌀가루 품종의 출수기변화요인을 분석한 결과, 이앙부터 출수까지 일 평균온도 및 이앙시기변화는 포장생육일수와 부의 상관관계를 보이며 이앙시기변화에 따른 포장생육일수 변화는 유의한 상관관계를 보였다. 2. 이를 바탕으로 수발아 발생위험성 감소를 위해 등숙기 온도를 최저로 낮추기 위해 각 지역별로 안전출수한계기에 출수할 수 있는 이앙시기를 분석한 결과 대략 5월 초순(강원지역)~6월 중순(남부 내륙지역) 혹은 6월 하순(남부 해안지역)이 이앙적기로 판단되었다. 3. 각 품종별로 이앙적기에 이앙 시 수발아 발생 위험이 있는 등숙적산온도 700℃ 및 900℃의 평균온도를 분석한 결과 700℃의 경우 대체로 약 20℃, 900℃의 경우 18℃의 온도를 나타내었다. 4. 쌀가루 가공용 품종의 수발아 발생가능성을 분석한 결과, 바로미2을 제외하고는 등숙적산온도 700℃ 및 900℃에 등숙기 온도가 20℃ 미만 시 수발아 발생율은 높지 않은 것으로 판단되었다. 5. 바로미2의 경우 다른 품종에 비해 등숙기간중 수발아 발생위험성이 높아 낮은온도에서 수발아 발생위험성을 재검정하여 이앙시기를 재설정할 필요성이 있다.

시작시기와 납기를 고려하는 유연흐름공장의 일정계획 (A Scheduling Scheme for Flexible Flow Shop with Release Date and Due Date)

  • 이주한;김성식
    • 산업공학
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    • 제11권3호
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    • pp.1-13
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    • 1998
  • This paper addresses a scheduling scheme for Flexible Flow Shop(FFS) in the case that a factory is a sub-plant of an electronic device manufacturing plant. Under this environment, job orders for the sub-plants in the production route are generated together with job processing time bucket when the customer places orders for final product. The processing time bucket for each job is a duration from possible release date to permissible due date. A sub-plant modeled FFS should schedule these jobs orders within time bucket. Viewing a Printed Circuit Board(PCB) assembly line as a FFS, the developed scheme schedules an incoming order along with the orders already placed on the scheduled. The scheme consists of the four steps, 1)assigning operation release date and due date to each work cells in the FFS, 2)job grouping, 3)dispatching and 4)machine allocation. Since the FFS scheduling problem is NP-complete, the logics used are heuristic. Using a real case, we tested the scheme and compared it with the John's algorithm and other dispatching rules.

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DBR을 이용한 MRP 단점 보완에 따른 납기 준수율 향상에 관한 연구 (A Study For Improvement of Due Date Rate by Supplementing Defects of MRP Using DBR)

  • 조중현;양광모;강경식
    • 대한안전경영과학회:학술대회논문집
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    • 대한안전경영과학회 2004년도 춘계학술대회
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    • pp.299-302
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    • 2004
  • Today, several manufacture enterprises are endeavoring constantly to receive order winners of subsidiary company product. There are tendencies to occupy competitive advantage in high position in price competition and in quality etc. But, it is not easy to keep it even if price has been cheap recently. Also, it is hard to be competitive advantage element more, because production smoothing was made much even if there is in quality. To keep or improve present competitive power, the due date rate is becoming importance. Several techniques with MRP, MRP II appeared in the 1970s by method to improve the these due date rate. These techniques have some defects to due date. Therefore, in this paper, MRP wishes to receive the due date rate that is improved more by supplementing having these defect by DBR of TOC.

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Effect of planting density and seeding date on the tiller occurrence, growth and yield of sorghum (Sorghum bicolor L.)

  • Han, Tae Kyu;Yoon, Seong Tak;Jeong, In Ho;Kim, Young Jung;Yu, Je Bin;Yangjing, Yangjing;Ye, Min Hee
    • 한국작물학회:학술대회논문집
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    • 한국작물학회 2017년도 9th Asian Crop Science Association conference
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    • pp.348-348
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    • 2017
  • This experiment was conducted to investigate the aspect of tiller occurrence, growth and yield of sorghum according to planting density and sowing date. The subject of this experiment is to supply basic data to inhibit non-productive tillers uneconomical and cumbersome for mechanical harvesting. Also another subject was to evaluate optimum planting density and sowing date in central district area. Total number of tillers was more in 80cm ridge than 60cm ridge and it was increased as the planting distance was wider from 15cm to 30cm on the each ridge. Ratio of effective tillers was higher in 60cm ridge than 80cm ridge and it was decreased as planting distance was wider from 15cm to 30cm. The lower the planting density, the more increased total number of tillers, whereas effective tillers were decreased as planting density was high. Average of total number of tillers of three varieties was higher in sowing date of 2 May (1st sowing date), whereas ratio of effective tillers was the highest in sowing date of 23 May (2nd sowing date). Hwanggeumchal showed the highest total number of tillers (1.2 tillers), while Moktaksusu had the lowest total number of tillers (0.8 tillers) among three varieties. There were no significant difference between planting density and days to heading and ripening date from seeding. Culm length increased as planting density was high, but ear length, grains per ear and 1000 grain weight were decreased on the other hand. The highest yield of sorghum per 10a was obtained from $60{\times}20cm$ planting density among 6 planting densities.

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수확시기 및 첨가제가 연맥 사일리지의 품질에 미치는 영향 (Effects of Harvesting Date and Additives on the Quality of Fall Sown Oat ( Avena sativa L. ) Silage)

  • 이성철
    • 한국초지조사료학회지
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    • 제18권2호
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    • pp.157-162
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    • 1998
  • This experiment was carried out to investigate the effects of harvesting date and additives on the quality of fall sown oat(Avena sativa L.) silage at the department of animal resources science, college of life resources science, Woosuk University, Wanju &om August, 1997 to March, 1998. The experiment was arranged in a split plot design with three replications. The main plots consisted of the harvesting date such as 15 Oct., 23 Oct. and 2 Nov. and different additives as subplots(control, wheat bran, formic acid, lactic acid bacteria, and wilting). The results otained are summarized as follow : The fiesh and dry matter yield of oat were increased by harvesting date delayed, then fiesh and dry matter yield at 2 Nov. were highest as 36,733 and 7,29Okg/ha, respectively. The dry matter content of oat silage was increased significantly by harvesting date delayed(P< 0.05), and DM content of wheat bran and wilting treatment was high at every harvest date. The DM loss was lower in LAB, formic acid and wheat bran treatment, but on significant difference was found among harvesting date(P< 0.05). Average pH of silage harvested at 23 Oct. was lowest as 4.06, and the quality(CP, NDF, ADF, and IVMDM) of oat silage was decreased by harvesting date delayed. The content of acetic acid was no difference among harvesting date, but butyric acid was decreased and lactic acid was increased at 23 Oct. harvest. The result of this study indicate that oat harvested at booting-heading stage of maturity with wilting wheat bran, and LAB could be recommended as producing high quality of oat silage.

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Antioxidant potential of a soft cheese (paneer) supplemented with the extracts of date (Phoenix dactylifera L.) cultivars and its whey

  • Qureshi, Tahir Mahmood;Amjad, Aniqa;Nadeem, Muhammad;Murtaza, Mian Anjum;Munir, Masooma
    • Asian-Australasian Journal of Animal Sciences
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    • 제32권10호
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    • pp.1591-1602
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    • 2019
  • Objective: The present study was conducted to evaluate the antioxidant potential of paneer, a soft cheese supplemented with various water soluble date extracts during storage. Further, the whey obtained from all the paneer samples was also investigated for its antioxidant potential. Methods: The date cultivars were evaluated for their physico-chemical characteristics and date extracts were assessed for their antioxidant potential. Physico-chemical evaluation, microbiological quality and further antioxidant potential of the prepared paneer were carried out during storage period (0 to 8 days, $5^{\circ}C$). Results: All the date extracts were found to have considerable antioxidant activity due to presence of total phenolics and flavonoids. Owing to the presence of phenolics and flavoinds in date extracts, supplemented paneer showed higher trolox equivalent antioxidant capacity, reducing power and 2, 2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging activity than control paneer. Paneer supplemented with Rabi extracts had the highest total phenolics ($190.7{\mu}g$ gallic acid equivalent/g paneer), DPPH radical scavenging activity ($928.1{\mu}mol$ equivalent of Trolx/g paneer) and trolox equivalent antioxidant capacity ($9.2{\mu}mol$ equivalent of Trolx/g paneer). The whey obtained from control paneer showed lower values of total phenolics, total flavonoids, DPPH, trolox equivalent antioxidant capacity and reducing power as compared to the values of whey obtained from paneer supplemented with date extracts. Conclusion: Paneer supplemented with date extracts and its whey may offer potent antioxidant activity.

정기용선계약의 최종항해에 대한 사례연구 (A Case Study on Final Voyage of the Time Charter)

  • 여성구
    • 한국항만경제학회지
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    • 제21권4호
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    • pp.75-101
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    • 2005
  • Every time charter must have a final terminal date, that is a date by which the charterer is contractually obliged to redeliver the vessel. Where the law implies a margin or tolerance beyond an expiry date stipulated in the charter party, the final terminal date comes at the end of such implied extension. When the parties have agreed in the charter party on the margin or tolerance to be allowed, the final terminal date comes at the end of such agreed period. But the nature of a time charter is that the charter is for a finite period of time and when the final terminal date arrives the charterer is contractually bound to redeliver the vessel to the owner References to delivery and redelivery are strictly inaccurate since the vessel never leaves the possession of the shipowner, but the expression are conventionally used to describe the time when the period of the charter begins and ends. The legitimacy or otherwise of what is to be regarded as a vessel's final voyage must be judged at the time when the charterers give an order for the vessel to carry out the voyage in question, and then by reference to what they order her to do. The purpose of this paper aims to analyse cases on the final voyage of time charter, and specially to explore implications of the final voyage in time charter through the Gregos case.

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