• Title/Summary/Keyword: Preservation period

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토양경작법을 이용한 유류오염 토양 복원시 미생물제제 적용 효과

  • 환경보전협회
    • Bulletin of Korea Environmental Preservation Association
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    • v.26 no.5_6
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    • pp.59-61
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    • 2004
  • Landfarming and a microbial agent were used to treat dilsel-contaminated soil. The microbial agent was applied to the contaminated soil in a concentration of 5$\times$102 cfu/soil(g) and the total amount of microbial agent, 210 l , was sprinkled on the soil four times for 24 days during 50 day-remediation period. The remediation goal, lower than 800mg/kg of TPH, was achieved from 5,707mg/kg of TPH within 50 days. The total number and activity of indigenous microorganisms were increased by 100 times after the microbial agent, Bioil-D, was applied to the contaminated soil.

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Effect of Topical Hypothermia on Myocardial Protection from Ischemia - Experimental study using isolated rat heart perfusion technique- (흰쥐의 적출된 작업성 심장에서 허혈성 심정지시 국소냉각법이 심근보호에 미치는 영향)

  • 최종범
    • Journal of Chest Surgery
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    • v.21 no.2
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    • pp.231-239
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    • 1988
  • Currently numerous methods are in use for myocardial hypothermia as a myocardial preservation modality for cardiac operation. During cardiac ischemia after crystalloid cardioplegia[4C GIK solution], topical cold saline[Group I, a=9], topical ice slush[Group II, n=9] and topical ice chip[Group III, a=10] have been compared for myocardial surface cooling in the isolated rat heart model of cardiopulmonary bypass. During postischemic period, hemodynamic functions[aortic flow, coronary flow, peak aortic pressure and heart rate], biochemical enzymatic activities and cellular injuries with electron microscope were evaluated in this isolated rat heart perfusion model. Postischemic aortic flow, cardiac output and peak aortic pressure in Group I and Group II recovered better than Group III.[p< 0.05] Postischemic creatine kinase and lactate dehydrogenase leakages in Group II and Group III increased more than Group l and postischemic mitochondrial swelling in Group III was more severe than Group I, and Group II.[p< 0.05] These results suggest that topical cold saline was the better method than topical ice slush or topical ice chip as a myocardial preservation modality in the isolated rat heart model of cardiopulmonary bypass.

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Effect of Storage and Marketing Condition on Biochemical Property Changes of Garlic (Allium sativum L.) (마늘(Allium sativum L.)의 생화학적 변화에 대한 저장 및 유통조건의 영향)

  • 최선태;장규섭
    • Food Science and Preservation
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    • v.5 no.2
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    • pp.111-117
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    • 1998
  • Biochemical property changes of garlic during various storages and marketing after storage were investigated. Content of enzymatic pyruvic acid increased by room and low temperature storage but decreased by CA and MA storage. Fructan contents decreased rapidly by low temperature storage, but restrained decrement by CA and MA storage. Free sugar increased during storage, but did slowly by room temperature storage. Green pigment development was observed when garlics stored for 90days at low temperature were processed into crushed form. This discoloration was small for garlics stored in CA and MA, and never occurred for room temperature stored garlics. When marketed after storage, content of enzymatic pyruvic acid decreased in garlic stored in room and low temperature storage, but increased in garlics which decreased during CA and MA storage. Fructan contents deceased but free sugar contents continuously increased with marketing period. Green pigment development decreased in crushed garlic after 30days at room temperature marketing, but increased in low temperature marketing with marketing time progress.

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A Study on History of Criminal Policy in Korea (한국(韓國)의 형사정책(刑事政策)에 관한 역사적(歷事的) 고찰(考察))

  • Kim, Hyeong-Cheong
    • Korean Security Journal
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    • no.6
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    • pp.1-46
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    • 2003
  • During the ancient times, there was no separative judicial system and administrative , legislative and judiciary functions were ultimately concentrated in the all-powerful monarch. And the three states developed state organization , adopting hieratical structures and placing at the pinnacle . State Codes were promulgated to initiate a legal system to rule the people, these codes instituted under influence of China codes. The people tradition sees crime control as the preservation of the authority of hereditary rulers. In the period of the Koryeo dynasty, government accepted a serious of detailed penal code from Tang dynasty . Legal response to crime stressed preservation of the dynasty rather than making citizen behave according to certain rules. In the period of Early Joseon , the compilation of Grand Code for state administration was initiated, the Kyeongkuk Taejeon ,became comer stone of the dynastic administration and provided the monarchial system with a sort of constitutional law in written form. This national code was in portant means of criminal policy at that time, Late Joseon , the impact of Western culture entering through China gave further impetus to pragmatic studies which called for socio-economic reforms and readjustment. Approach to criminal justice policy emphasized more equitable operation of the criminal justice system ,rehabilitation and crime control. Korea-Japanese Treaty concluded on 22 August ,1910 and proclaim a week later ,Japan gave the coup de grace to the Korea Empire and changed the office of the Resident - General into the Government - General . Thus korean criminal policy were lost during a dark ages ,which lasted for 36 years after fall of Joseon Dynasty (the colnial period,1910${\sim}$1945). After 1945 Korea's liberation from Japanese colonial rule, the occupation of devided Korea by the United States and Soviet Union frustrated the efforts of Koreans to establish an independent government, and the transplantation of two conflicting political ideologies to south and the north of the 38th parallel further intensified the national split. U.S. military government office occupied the south of the 38 the parallel and placed emphasis on democracy of criminal policy. ln 1948, the U.S. military government handed over to the ROK government its administrative authority.

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Study on Antioxidative Activity of Plant Extracts in Fish Oil (식물 추출물이 어유의 산화 안정성에 미치는 영향)

  • Jang, Ji-Sun;Hong, Jang-Hwan;Lee, Ki-Teak
    • Food Science and Preservation
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    • v.13 no.6
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    • pp.726-731
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    • 2006
  • Extract from forty four species of natural plants in Korea were obtained. Each extinct (1,000 ppm) was added into fish oil and their antioxidative activities were screened by rancimat, From the results, seven species including Brassica juncea, Solanum tuberosum, Capsella bursa, Ulums davidiana, Broussonetia kazinoki, Oenanthe javanica, and Rhus chinensis were selected due to their relatively prolonged induction periods. When the concentration (100 - 1,000 ppm) of the selected extract was considered, the most prolonged induction period was observed from Solanum tuberosum throughout the studied concentrations, suggesting that its extinct showed the strongest antioxidative activity against fish oil. In addition, peroxide value (POV) and thiobarbituric acid reactive substance (TBARS) value were considered at $60^{\circ}C$ for 5 days. Among the selected extract, extract from Solanum tuberosum showed the lout POV while the extract from Brassica juncea var showed the least TBARS values after 5 days. Also, the free radical scavenging effect against DPPH radical were studied with the selected extract, showing that the extract from Rhus chinensis was found to be the most effective.

Antioxidant and Anticarcinogenic Effects of Traditional Doenjang during Maturation Periods (된장 숙성기간중의 항산화 및 암세포 생육 억제효과)

  • Kwon Sun-Hwa;Shon Mi-Yae
    • Food Science and Preservation
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    • v.11 no.4
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    • pp.461-467
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    • 2004
  • Antioxidant effect of traditional doenjang(TD) was reduced by increasing of maturation period. Methanol fractionate of TD matured for 1 year showed strong antioxidant effect against linoleic acid, following the order of hexane and water layer. Antioxidant effect in lipophilic and hydrophilic extracts of TD were gradually increased according to increasing maturation period, whereas their values or two extracts were lower than those or fractionates from TD. Hydrogen-scavenging effect in hydrophobic extract, methanol and butanol fractionates of TD were much higher than those of the other samples. Chloroform and ethylacetate fractionates were markedly lower in the range of $10.57{\sim}22.84\%\;and\;7.82{\sim}22.58\%$, respectively. Anticarcinogenic effect of extracts and fractionates from TD were higher in water fractionates for A549 cell (human lung carcinoma) and methanol fractionates fur MCF-7 cell (human breast adenocarcinoma). Especially, inhibitory effect for growth of cancer cell was increased by the increasing maturation period of TD.

Effects of top-dressing period on Yield and Storage Quality of Onion(Allium Cepa L.) (추비시기가 양파의 수량 및 저장성에 미치는 영향)

  • 김희대;이찬중;정은호;서전규
    • Food Science and Preservation
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    • v.10 no.3
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    • pp.267-271
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    • 2003
  • This study was carried out to investigate the yield and storability of onions on top-dressing period. Top-dressing period was applied in February, March and March, April with liquid fertilizer and solid fertilizer of farmhouse practice during the onion growing season. The yields of onion in experimental station field and farmhouse field treated with conventional fertilization were 53.2 and 56.6MT, respectively. However, they were 58.2 and 60.8MT with application of liquid fertilizer in February and March, and 53.6 and 59.1MT with application of liquid fertilizer in March and April. Rotting rates until the end of August were lower with application of liquid fertilizer on February and March(15.8%, 28.9%), compared with application of solid fertilizer by farmhouse practice(23.6%, 41.0%), and were 20.7% and 31.7% by treatment of liquid fertilizer on March and April. In conclusion, treatment of liquid fertilizer on February and March decreased the rotting rate.

Quality Characteristics of Gamma-Irradiated Chickens (감마선 조사 계육의 품질특성)

  • 곽희진;강일준
    • Food Science and Preservation
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    • v.6 no.4
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    • pp.411-416
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    • 1999
  • This research was conducted to investigate changes in quality characteristics of gamma-irradiated chickens during storage at different temperature and periods. In heme pigment(myoglobin) content, metmyoglobin content of chicken stored at 5$^{\circ}C$ was not affected by gamma irradiation but slightly increased with the increase in storage period. All samples stored at -20$^{\circ}C$ were no different in heme pigment content between nonirradiated and irradiated samples and slightly decreased as the freezing storage period increased. The SDS electrophoresis patterns were not significantly different between nonirradiated and irradiated samples. All samples stored in at 5$^{\circ}C$ showed a prominent breakdown of molecular weights ranging from 97,000 to 116,000 Daltons after 8 weeks' storage. TBA values increased according to the increment of irradiation dose level and storage period at both temperatures, 5$^{\circ}C$and -20$^{\circ}C$. However, The acid value decreased with increasing irradiation dose level. In the VBN value, nonirradiated chickens were four times higher than that of 7 kGy-irradiated one.

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Effect of Steaming Pressure and Time and Storage Period on Quality Characteristics of Baeksulgi (백설기 제조에서 찌는 압력과 시간 및 저장 기간에 따른 품질 특성)

  • Park Ji-Yang;Ryu Gi-Hyung
    • Food Science and Preservation
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    • v.13 no.2
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    • pp.174-179
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    • 2006
  • The objective of the study was to investigate the effect of steaming pressure (0.5, 1.0, and 1.5 bar), steaming time (5, 10, and 15 min), and storage period on Hardness, hardness rate constant and sensory characteristics of Baeksulgi prepared with optimum formula (rice new 100%, water 60%, salt 1.5%, and sugar 15%). Although the hardness was slowly increased during storage period from 0 hr to 8 hr and sharply increased after 12 hr of storage in case of 0.5 bay steam pressure, it was slowly increased after 12 hr storage time in case of steaming pressure at 1.0 ban Hardness rate constant of Baeksulgi was $0.217{\sim}0.184hr^{-1}$ at range of steaming time for $8{\sim}10$ min and pressure at $0.8{\sim}1.0$ bar which was relatively low. Hardness and elasticity of sensory evaluation were increased with the increases in steaming pressure, steaming time, and storage period but cohesiveness was decreased The highest overall preference was steaming pressure at 10 bar, steaming time for 10 min, and storage period for 12 hr. In conclusion, steaming pressure, steaming tim, and storage period influenced Baeksulgi quality such as hardness and sensory characteristics.

The Classification arranged from Protectorate period to the early Japanese Colonial rule period : for Official Documents during the period from Kabo Reform to The Great Han Empire - Focusing on Classification Stamp and Warehouse Number Stamp - (통감부~일제 초기 갑오개혁과 대한제국기 공문서의 분류 - 분류도장·창고번호도장을 중심으로 -)

  • Park, Sung-Joon
    • The Korean Journal of Archival Studies
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    • no.22
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    • pp.115-155
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    • 2009
  • As Korea was merged into Japan, the official documents during Kabo Reform and The Great Han Empire time were handed over to the Government-General of Chosun and reclassified from section based to ministry based. However they had been reclassified before many times. The footprints of reclassification can be found in the classification stamps and warehouse number stamps which remained on the cover of official documents from Kabo Reform to The Great Han Empire. They classified the documents by Section in the classification system of Ministry-Department-Section, stamped and numbered them. It is consistent with the official document classification system in The Great Han Empire, which shows the section based classification was maintained. Although they stamped by Section and numbered the documents, there were differences in sub classification system by Section. In the documents of Land Tax Section, many institutions can be found. The documents of the same year can be found in different group and documents of similar characteristics are classified in the same group. Customs Section and Other Tax Section seemed to number their documents according to the year of documents. However the year and the order of 'i-ro-ha(イロハ) song' does not match. From Kabo Reform to The Great Han Empire the documents were grouped by Section. However they did not have classification rules for the sub units of Section. Therefore, it is not clear if the document grouping of classification stamps can be understood as the original order of official document classification system of The Great Han Empire. However, given the grouping method reflects the document classification system, the sub section classification system of the Great Han Empire can be inferred through the grouping method. In this inference, it is understood that the classification system was divided into two such as 'Section - Counterpart Institution' and 'Section - Document Issuance Year'. The Government-General of Chosun took over the official documents of The Great Han Empire, stored them in the warehouse and marked them with Warehouse Number Stamps. Warehouse Number Stamp contained the Institution that grouped those documents and the documents were stored by warehouse. Although most of the documents on the shelves in each warehouse were arranged by classification stamp number, some of them were mixed and the order of shelves and that of documents did not match. Although they arranged the documents on the shelves and gave the symbols in the order of 'i-ro-ha(イロハ) song', these symbols were not given by the order of number. During the storage of the documents by the Government-General of Chosun, the classification system according to the classification stamps was affected. One characteristic that can be found in warehouse number stamps is that the preservation period on each document group lost the meaning. The preservation period id decided according to the historical and administrative value. However, the warehouse number stamps did not distinguish the documents according to the preservation period and put the documents with different preservation period on one shelf. As Japan merged Korea, The Great Han Empire did not consider the official documents of the Great Han Empire as administrative documents that should be disposed some time later. It considered them as materials to review the old which is necessary for the colonial governance. As the meaning of the documents has been changed from general administrative documents to the materials that they would need to govern the colony, they dealt with all the official documents of The Great Han Empire as the same object regardless of preservation period. The Government-General of Chosun destroyed the classification system of the Great Han Empire which was based on Section and the functions in the Section by reclassifying them according to Ministry when they reclassified the official documents during Kobo Reform and the Great Han Empire in order to utilize them to govern the colony.