• 한국약용작물학회지
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• 제5권1호
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• pp.1-6
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• 1997

토양수분(土壤水分) 부족(不足)이 토천궁(土川芎)(Ligusticum chuanxiong Hort.)의 수량(收量) 및 품질(品質)에 미치는 영향을 알아보고자 비가림 비닐하우스를 이용하여 우리나라 기상(氣象) 여건상(與件上) 한발(旱魃)이 자주 발생되는 유식물기(幼植物期), 개화기(開花期) 및 근경비대기(根莖肥大期)에 토양수분(土攘水分) 부족(不足)을 유발시킨 처리구와 전(全) 생육기간동안 포장용수량 수준으로 관수를 하여준 대조구를 두어 시험을 수행한 결과를 요약하면 다음과 같다. 1. 근경(根莖)의 수량(收量)은 대조구에 비해 근경비대기(根莖肥大期) 수분부족(水分不足) 처리시(處理時) 19.1%, 유식물기(幼植物期) 수분부족(水分不足) 처리시(處理時) 18.2%, 개화기(開花期) 수분부족(水分不足) 처리시(處理時) 17.6%가 각각(各各) 감소(減少)되어 근경비대기(根莖肥大期) 수분부족(水分不足) 처리시(處理時) 감소정도(減少程度)가 가장 컸다. 2. 상품율(商品率)(생근경(生根莖) 20g이상(以上) 비율(比率))은 유식물기(幼植物期) 수분부족(水分不足) 처리시(處理時) 85.0%, 개화기(開花期) 수분부족(水分不足) 처리시(處理時) 81.7%, 근경비대기(根莖肥大期) 수분부족(水分不足) 처리시(處理時) 78.3%, 대조구(對照區) 93.4%로 근경비대기(根莖肥大期) 수분부족(水分不足) 처리시(處理時) 가장 낮았으며, 엑스 함량은 대조구(對照區) > 근경비대기(根莖肥大期) > 개화기(開花期) > 유식물기(幼植物期) 수분부족(水分不足) 처리(處理)의 순으로 높았다. 3. 근경(根莖)의 수량(收量)은 세근(細根)의 수량(收量)과 유의적인 상관관계(相關關係)가 있었으며, 엑스함량은 줄기의 건물중(乾物重) 및 세근수량(細根收量)과 유의성 있는 상관관계(相關關係)가 인정되었다.

• 한국동물학회:학술대회논문집
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• 한국동물학회 2001년도 한국생물과학협회 학술발표대회
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• pp.197.1-197
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• 2001

No Abstract, See Full Text

• 반도체디스플레이기술학회지
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• 제17권4호
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• pp.51-55
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• 2018

As the OLED industry develops, display equipment is becoming larger. As a result, the stage required for display equipment is getting bigger. This enlargement led to increase in OLED production and industrial development. However, due to the large scale of the stage, other problems due to overheating and overheating caused by heavy load on the linear motor, which is mainly used in the stage, must be solved. In this study, a linear motor equipped with a cooling channel is modeled and the three - dimensional heat conduction flow analysis for this model is simulated using Fluent to analyze the cooling efficiency and cooling efficiency according to the cooling water flow rate. As a result, the cooling channel was effective and the cooling effect and efficiency were the best when the flow rate was about 5 ~ 10 L./min. In addition, the cooling effect is increased when the flow rate is increased, but the efficiency is significantly lowered when the flow rate is more than the predetermined value.

• 한국약용작물학회지
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• 제4권4호
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• pp.301-307
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• 1996

토양수분(土壤水分) 불족(不足)이 토천궁(土川芎)(Ligusticum chuanxiong Hort.)의 생육형질(生育形質)에 미치는 영향(影響)을 알아 보고자 비가림 비닐하우스안의 베드에서 우리나라 기상(氣象) 여건상(與件上) 한발(旱魃)이 자주 발생(發生)되는 유식물기(幼植物期), 개화기(開花期) 및 근경비대기(根莖肥大期)에 토괴수분(土壞水分) 불족(不足)을 유발(誘發)시켜 시험(試驗)을 속행(速行)한 정과(精果)를 요약(要約)하면 다음과 같다. 1. 엽면적(葉面積)은 수분불족처리(水分不足處理) 위료직후(緯了直後)에는 유식륜기(幼植輪期) 수분불족(水分不足) 처리시(處理時) 대조구(對照區) 24.4%로 가장 심하게 감소(減少)되 었으며, 수확기(收穫期)에는 근경비대기(根莖肥大期) 수분불족(水分不足) 처리시(處理時) 대조구(對照區)의 41.6%로 가장 감소(減少)가 심하였다. 2. 엽녹소(葉綠素) 함양(含量)은 수분불족처리(水分不足處理) 종료(終了) 직후(直後)에는 대조구(對照區)에 비해 유식물기(幼植物期) 수분불족(水分不足) 처리시(處理時) 41.2%가 감소(減少)되어 감소율(減少率)이 가장 심하였고, 개화기(開花期) 수분불족(水分不足) 처리시(處理時) 감소률(減少率)이 적었으며, 수확기(收穫期)에 는 유식물기(幼植物期)와 개화기(開花期) 수아불족(水芽不足) 처리시(處理時)는 95% 이상(以上) 회복(回復)되었다. 3. 세근(細根)의 뿌리분포(分布)는 유핵물기(幼核物期) 수분불족(水分不足) 처리시(處理時) 지표면(地表面)에서 l0cm부근의 분포률(分布率)이 90%로 가장 높았으며, 토양(土壤) 20cm 이상(以上)의 깊이에서는 근잔비대기(根盞肥大期) 수분불족(水分不足) 처리시(處理時) 6.4%로 가장 높았고, 세근(細根)의 건물중(乾物重)은 수맥불족(水麥不足) 장득(障得)를 받을 경우 대조구(對照區)에 비해 $19.3{\sim}40.3%$가 감소(減少) 되었다. 4. 지상부(地上部)와 지하부(地下部) 건물중(乾物重)은 유식물기(幼植物期), 개화기(開花期), 근동범대기(根童犯大期), 대조구(對照區)의 순으로 감소(減少)되었으며, 수분불족(水分不足) 처리시(處理時) 지하부(地下部) 건물중(乾物重) 보다는 지상부(地上部) 건물중(乾物重)의 감소(減少)가 더 심하였다.

• 한국임상수의학회지
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• 제35권5호
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• pp.218-221
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• 2018

A 12-year-old, intact female Jindo was referred to our clinic due to the enlargement of all lymph nodes, as well as severe dyspnea. All palpatible lymph nodes were highly swelling and enlargement. The dog was diagnosed as end stage of multicentric lymphoma with multi-organ metastasis. In addition, the dog was diagnosed as having a pulmonary thromboembolism via computed tomography (CT) and D-dimer concentrations and prothrombin time (PT) results. This case report describes that lymphoma can be associated with pulmonary thromboembolism which is life threatening complication in dogs. The present case was managed successfully with chemotherapy and antithrombotic treatment.

• 한국주거학회논문집
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• 제1권1호
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• pp.37-48
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• 1990

The objective of this study is to suggest a housing life cycle of Korean families which adds to the establishment of reasonable housing standards and to the prediction of fufure-oriented family housing behavior by reviewing published papers. Following model is suggested as a housing life cycle suitable to assess the family housing behavior in Korea. 1st stage : period of house searching 2nd stage : period of house changing 3rd stage : period of house stabilizing \circled1 size enlargement phase \circled2 quality improvement phase \circled3 stable settlement phase 4th siage : period of house contracting 5th stage : period of house depending Since the proposed model is hypothetical, it must be tested and modified by the extensive social survey research on the real housing event history.

• Restorative Dentistry and Endodontics
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• 제42권4호
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• pp.332-341
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• 2017

Objectives: To determine the incidence of crack formation and propagation in apical root dentin after retreatment procedures performed using ProTaper Universal Retreatment (PTR), Mtwo-R, ProTaper Next (PTN), and Twisted File Adaptive (TFA) systems. Materials and Methods: The study consisted of 120 extracted mandibular premolars. One millimeter from the apex of each tooth was ground perpendicular to the long axis of the tooth, and the apical surface was polished. Twenty teeth served as the negative control group. One hundred teeth were prepared, obturated, and then divided into 5 retreatment groups. The retreatment procedures were performed using the following files: PTR, Mtwo-R, PTN, TFA, and hand files. After filling material removal, apical enlargement was done using apical size 0.50 mm ProTaper Universal (PTU), Mtwo, PTN, TFA, and hand files. Digital images of the apical root surfaces were recorded before preparation, after preparation, after obturation, after filling removal, and after apical enlargement using a stereomicroscope. The images were then inspected for the presence of new apical cracks and crack propagation. Data were analyzed with ${\chi}^2$ tests using SPSS 21.0 software. Results: New cracks and crack propagation occurred in all the experimental groups during the retreatment process. Nickel-titanium rotary file systems caused significantly more apical crack formation and propagation than the hand files. The PTU system caused significantly more apical cracks than the other groups after the apical enlargement stage. Conclusions: This study showed that retreatment procedures and apical enlargement after the use of retreatment files can cause crack formation and propagation in apical dentin.

• 한국버섯학회지
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• 제16권2호
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• pp.90-95
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• 2018

본 연구는 실내시설재배에서 천마의 생육단계를 균사활착기, 괴경형성기, 괴경비대기, 휴면기로 구분하고, 최적 온도 및 배양기간을 설정하였으며, 괴경비대기에 변온처리를 하였다. 천마의 균사활착기는 $20^{\circ}C$에서 30일, 괴경형성기는 $25^{\circ}C$에서 120일, 괴경비대기는 $6{\sim}24^{\circ}C$에서 60일, 휴면기는 $5^{\circ}C$에서 30일로 처리하여 총 배양기간은 240일로 설정하였다. 실내시설재배는 노지재배보다 균사활착기는 30일 단축되었고, 괴경형성기는 30일 연장되었으며, 휴면기는 120일 단축됨으로써, 전체 재배기간이 약 120일 단축되었다. 따라서, 본 연구 결과, 밀폐된 실내시설재배에서 온도 조건을 제어하면 천마를 연중생산 할 수 있는 생육모델의 기초자료로 활용될 수 있을 것으로 판단되었다.

• 한국약용작물학회지
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• 제27권5호
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• pp.315-321
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• 2019

Background: There have been no studies to date on rhizome development and optimal harvest timing for Rehmannia glutinosa. We therefore, undertook this investigation. Methods and Results: R. glutinosa 'Jihwang 1' was sown in early May and harvested in early November. Growth investigations were carried out at intervals of 10 days between 90 and 180 days after sowing (DAS). Leaf length, leaf width, and number of leaves increased until 150 DAS but decreased after 160 DAS. Rhizome length increased until 120 DAS subsequently, rhizome diameter increased rapidly between 130 and 150 DAS. Thus, the key period for rhizome enlargement in R. glutinosa is thought to be 130 to 150 DAS. Fresh root yield increased sharply from 916 kg/10a to 1,914 kg/10a between 4 and 5 months after sowing (MAS). Dry matter ratio increased gradually from 19.2% at 4 MAS to 24.4% at 6 MAS. Finally, the level of catalpol, a key active ingredient, increased sharply from 0.41% to 4.21% between 5 and 6 MAS. Given the dry matter ratio, catalpol content and yield measured, we suggest that optimal R. glutinosa harvest time is 6 MAS. Conclusions: Based on our results, the key period for rhizome enlargement is 130 to 150 DAS and optimal harvest timing is 6 MAS. We anticipate that these and other results of this study can be used to inform cultivation of R. glutinosa.

• 한국임상수의학회지
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• 제39권6호
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• pp.287-293
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• 2022

Radiographic left atrial dimension (RLAD) is a useful measurement to assess left atrial enlargement in dogs. There are studies on the use of RLAD on various breeds of dogs, but no study on a specific breed with myxomatous mitral valve disease (MMVD). This study was conducted to compare RLAD measurements in Maltese dogs with MMVD ACVIM stage B1 and B2, and also to investigate the correlation of RLAD with the LA:Ao ratio. A total of 29 Maltese dogs were the subjects of this study. Each dog was diagnosed with MMVD ACVIM stage B1 or B2 based on physical examination, thoracic radiography, and echocardiography. The vertebral heart size (VHS), RLAD, LVIDDn, and LA:Ao ratio were measured and compared to evaluate the differences. There were significant differences in the RLAD, LVIDDn, and LA:Ao ratio between dogs with MMVD ACVIM stage B1 and those with stage B2. There was a significant correlation between the LA:Ao ratio and both the RLAD and VHS measurements, but the correlation coefficient was higher for RLAD. The RLAD scores exhibited a significant difference between dogs with ACVIM Stage B1 and with those with B2, and these scores had a higher correlation with the LA:Ao ratio measured by echocardiography than with VHS.