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박성태,장익주,정창화,김상열,김재현,문헌팔,양세준,김순철 한국국제농업개발학회 2002 韓國國際農業開發學會誌 Vol.14 No.3
쌀 생산비를 줄이고 대경지 규모화 영농에 적응할 수 있는 농기계 개발을 목적으로 연구개발한 대규모 경지적응 트랙터 부착 대형벼이앙기의 구성과 특징 및 개발시작기의 재배적 실용성 평가결과를 요약정리하면 다음과 같다. 1. 트랙터 부착 12조 대형벼이앙기는 크게 바퀴자국 제거로타리, 문짝형 정지판, 이앙장치부 등으로 구성되어 있다. 2. 트랙터 부착 12조 이앙기는 트랙터 동력을 이용하여 로타리, 정지 및 이앙작업이 동시에 이루어 질 수 있도록 개발하였다. 3. 바퀴자국을 없애는 날은 기존의 로타리 날을 교체하면 되도록 반달형 날로 제작하였다. 4. 이앙기는 이동시는 접을 수 있도록 설계 제작되어 대형화가 가능하므로 기존 6조 승용이앙기에 비하여 이앙작업 능력이 1.5배 이상이었다. 5. 트랙터 부착 대형벼이앙기는 트랙터와 같은 큰 동력원을 이용할 수 있으므로 측조시비기, 긴매트모 탑재 등 다양한 작업기 및 기능을 추가로 부착 가능하도록 설계되었다. 6. 트랙터 부착 대형벼이앙기는 어린모 및 중묘이앙시 결주율은 3.0∼4.3%로 기계이앙기 결주 허용범위 5% 미만이었다. 하지만 무경운 논에서는 이앙작업은 가능하나 부묘율이 다소 높은 점은 보완이 필요하다. To develop a labor saving rice cultivation technology, a new tractor attached rice transplanter has been developed for large scale farming and its field performance was evaluated. The rice transplanter consists of three major parts such as rotary for removing tractor tire furrow, door-shaped soil leveling plate and transplanting equipment. The rice transplanter is operated using the power of the tractor and performs rotary, harrow and seedling transplanting simultaneously. A half moon shaped rotary blade was found to be very efficient to remove tire furrow developed during seedling transplanting and the original rotary blade can be replaced easily with existed rotary blade. The seedling transplanting part of the transplanter was designed to fold into small size and the transplanting efficiency of the transplanter was found to be 1.5 times higher than that of the conventional riding type six row transplanter. Since the transplanter is operated through a strong power of the tractor, the additional attachment such as fertilizer application apparatus and long mat rice seedling carrier is possible. Based on the field performance of the transplanter, although the missing hill percentage showed roughly with 3.0∼4.3% for 10-day and 30-day old seedlings but the percentage is less than 5% which is maximum missing hill permit in the transplanting rice. Seedling transplanting in no-tillage field condition is acceptable but floating seedling percentage is still high and thus further technology improvement for minimizing floating seedling percontage is needed.
비 미란성 역류 질환의 치료에 주석산 시사프리드와 돔페리돈 말레이트의 비교 임상 연구 ( 다기관 연구 )
장병익(Byung Ik Jang),김태년(Tae Nyun Kim),정문관(Moon Kwan Chung),김성국(Sung Kook Kim),허정욱(Jung Wook Huh),임창영(Chang Young Im),김호각(Ho Gak Kim),서정일(Jung Il Suh),이문호(Moon Ho Lee),김남재(Nam Jae Kim),윤세진(Sei Jin Youn) 대한소화기기능성질환·운동학회 2002 Journal of Neurogastroenterology and Motility (JNM Vol.8 No.1
N/A The therapeutic requirements of patients with non-erosive reflux disease (NERD) are similar to those with erosive esophagitis. The pharmacological action mechanism of prokinetics is quite different; domperidone is a peripheral dopamine D2-antagonist and cisapride is a HT4-agonist. This study was performed to evaluate the therapeutic effect of these two different prokinetics in patients with NERD. Methods: 178 patients, with heartburn and/or regurgitation, without reflux esophagitis were enrolled and divided into 2 groups by randomization code. In this prospective multicenter trial, 178 patients (93 patients in cisapride group, 85 patients in domperidone group) received 10 mg of cisapride three times a day or 10 mg of domperidone three time a day for 2 or 4 weeks. Symptom assessment was performed in each patients before treatments, 2 and 4 weeks after treatment. Results: Of the 133 patients available for final analysis, 65 were allocated to the cisapride group and 68 to the domperidone group. After 2 weeks treatment, heartburn was reduced in 81.1% of cisapride group, 56.7% of domperidone group (p<0.05) and regurgitation was reduced in 89.7% of cisapride group, 77.7% of domperidone group. After 4 weeks treatment, heartburn was reduced in 94.3% of cisapride group, 88.7% of domperidone group and this difference was not significant. The proportion of adverse events in cisapride group was 9.4% and was 5.5% in domperidone group. Conclusions: Cisapride tartrate was more effective in relieving heartburn in NERD patients than domperidone maleate after 2 week treatment. However, this superior effect dose not persist longer than 2 weeks.(Korean Journal of Gastrointestinal Motility 2002;8:3-13)
Moon Joo Hwang,Kyeong Ok Kim,A Lim Kim,Si Hyung Lee,Byung Ik Jang,Tae Nyeun Kim 대한장연구학회 2018 Intestinal Research Vol.16 No.3
Background/Aims: We aimed to assess the rate of histologic discrepancy (HD) between endoscopic forceps biopsy (EFB) and totally resected specimens in colorectal polyp and analyze the risk factors of discordant group, especially under-diagnosis (UD) cases before complete removal of colorectal polyp. Methods: From 2010 to 2015, a total of 290 polyps in 210 patients which had baseline pathology report before endoscopic resection (ER) were analyzed. UD cases were defined as those in which the diagnosis changed to a more advanced histologic feature after ER. Results: A change in the final histology after ER was noted in 137 cases (47.2%), and after excluding 9 insignificant cases, 128 cases were further categorized into over-diagnosed and under-diagnosed group. UD occurred in 86 cases (29.7%) and change from benign to malignancy was noted in 26 cases (8.9%). On univariate analysis, a larger polyp size (>10 mm) was significantly associated with both HD (P<0.001) and UD (P<0.001). Regarding polyp morphology, protruding or flat was not significantly important. On multivariate analysis, polyp size >10 mm was the single most significant predictor of both HD (P<0.001) and UD (P<0.001). Conclusions: The HD and UD rates were 47.2% and 29.7%, respectively. Polyp size >10 mm was the most important predictor of both HD and UD. We should be careful in making treatment strategy of colorectal polyp based on histologic report of EFB especially when the size of polyp is >10 mm.
Formation of void array inside transparent and absorptive glasses by femtosecond laser irradiation.
Jang, Wooyoung,Kim, Daejin,Kim, Taehong,Moon, Ayoung,Lim, Ki-Soo,Lee, Myeongkyu,Sohn, Ik-Bu American Scientific Publishers 2012 Journal of Nanoscience and Nanotechnology Vol.12 No.6
<P>We demonstrate self-fabrication of void arrays in a fused silica transparent in the visible and a color-filter borosilicate glass strongly absorptive at 800 nm using tightly focused Ti-sapphire femtosecond laser pulses at 1 kHz without scanning. The period, the size, the number of voids, and the length of the aligned void structure were controlled by changing the laser pulse energy, and the position of the focal point inside two materials. The void arrays were observed by an optical microscope and also estimated by an optical diffraction experiment. The void size and period were smaller in the absorptive glass than in the transparent glass. The submicrometer-sized void was observed by a scanning electron microscope. The smaller and clearer void arrays were formed in the color filter than the fused silica glass. With increasing the laser focal depth, the void-array length increased in the fused silica and decreased in the color filter.</P>
Moon-Bo Choi,Gab-Sue Jang,Seul-Ong Kim,Tae-Su Kim,Gwan-Ik Gwon,Jeong-Kyu Kim,Jong-Wook Lee 한국응용곤충학회 2013 한국응용곤충학회 학술대회논문집 Vol.2013 No.04
This study selected 10 species commonly emerging in Busan and Daegu showing distinct green structure distributions, and distribution differences were mapped and analyzed according to city of origin. As for G-IS (Green-Inhabiting Species) of both cities, there were six species, including V. mandarinia, V. ducalis, V. crabro flavofasciata, Vl. koreensis koreensis, Pa. indica, and P. snelleni, which mostly inhabited urban source green and satellite green structures. As for GU-IS (Green & Urban-Inhabiting Species), there were two species, V. simillima simillima and V. analis parallela, which nested at diverse sites and showed greater preference for green structures. On the other hand, U-IPS (Urban-Inhabiting Preference Species) consisted of two species, V. velutina nigrithorax and P. rothneyi koreanus, which nested at almost all sites, including urban and urban green areas, and were found to adapt well to an urban environment based on their far higher rate of urban nesting as compared to GU-IS species. In comparing emergence rates among the four urban GU-IS and U-IPS species in Busan and Daegu, regular distribution was mostly observed within the city of Busan, which is well equipped with a green network, whereas Daegu, which lacks green structure connectivity, showed its greatest distribution of species nearby urban green areas. Also this study shows that in Daegu with longer distance between green, U-IPS emerged up to far site beyond green areas as compared to Busan, which has short distances between green areas.
토양 , 수(水) , 농작물중에 있어서 잔류농약분석을 위한 수증기 증류법의 응용에 관한 연구
문영희,장익선,양환승,최연철 한국환경농학회 1989 한국환경농학회지 Vol.8 No.1
土壤, 水, 農作物중 殘留하는 各種 農藥의 分析을 위한 水蒸氣蒸溜法의 應用性 및 精密度등에 대하여 硏究檢討하였다. 水蒸氣蒸溜에 의하여 抽出이 可能했던 農藥은 PCNB, α-BHC, β-endosulfan, IBP, diazinon, fenitrothion, fenthion, alachlor, butachlor, pretilachlor, metolachlor, pendimethalin, benthiocarb, molinate등이었으며 simazine, atrazine, nitrofen등은 不可能하였다. 農藥의 蒸溜까지 要하는 溜出液量은 農藥의 種類에 따라 크게 달랐으며, 一定量의 溜出液을 取한 후 冷却管을 acetone으로 씻어 줌으로써 蒸溜時間을 短縮시킬 수 있었다. 水蒸氣蒸溜法은 小量의 有機溶媒로 農藥의 抽出이 可能했으며, 分析對象物質에 따라서는 機器分析時 妨害物質이 檢定되기는 했지만 많은 경우 濃縮과 精製過程을 省略할 수도 있어 매우 有用한 方法이라 하겠다. Application of steam distillation on the analysis of pesticide residue in soil, water and crops was studied using the nitrogen distillation apparatus. Most pesticides which were extracted by organic solvents could be analyzed by the steam distillation method. For instance, distillations of PCNB, γ-BHC, α-or β-endosulfan, IBP, diazinon, fenthion, fenitrothion, alachlor, butachlor, pretilachlor, metolachlor, pendimethalin, benthiocarb and molinate were possible, but not simazine, atrazine and nitrofen. The optimum volume of distillate for a sufficient extraction of pesticide varied according to kind of pesticide. In general, the volume needed was little for carbamate, but much more for organochlorine. When the definite amount of distillate was obtained and then the condenser was washed by acetone, the optimum volume of distillate was less. Using the steam distillation method, the amount of organic solvent needed for one extraction of pesticide from soil, water and vegetable was less than the conventional solvent extraction method, and the analytical procedure became simpler. The process of concentration and clean up was mostly unnecessary, although a ghost peak was apparent in the gas chromatogram according to the kind of materials distilled.