http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
韓國南部 稻作地帶에 있어서 혹명나방 發生生態 및 被害解析에 關한 硏究
金奎眞,崔忠植 全南大學校 農漁村開發硏究所 1984 農業科學技術硏究 Vol.19 No.-
全南地方에 常習的으로 發生되고 있는 벼 혹명나방의 發生生態와 被害解析에 重點을 두어 1981年부터 1983年까지 試驗하였던 바 다음과 같은 結果를 얻었다. 1. 혹명나방은 全南地方에서 年2回發生(飛來世代 除外)하며 그 最盛期는 7月 下旬∼8月 上旬, 9月 上旬∼9月 中旬이었고, 11月 中旬까지 成蟲 및 卵이 觀察되었다. 2. 産卵數는 80∼90個 程度였고 卵期間은 4日 幼蟲期間 14∼24日, 卵期間 7∼8日이었으며 成蟲壽命은 7∼10日이었다. 3. 誘蛾燈에 依한 成蟲의 光選好性 調査結果 白色燈<赤≒黃<靑≒錄色燈 順으로 飛來되었지만, 飛來蟲數가 적어 뚜렷한 傾向을 推定키 어려웠다. 4. 被害葉率에 따른 收量減少가 가장 크게 作用하는 期間는 水稻의 同化機能面에서 가장 重要한 幼穗形成期∼登熱期 前까지였다. 5. 被害葉率과 登熱率과는 負의 相關關係가 認定되었다.(1火期 r=-0.539??,2火期 r=-0.697??) 6. 被害葉率과 收量과의 關係에 있어서 被害葉率의 增加에 따른 收量減少가 直線的으로 나타났다. This study was conducted to investigate bionomics and damage of the rice leaf folder(RLF), Cnaphalocrocis medinalis G. 1981~1982 in Chonnam province. Adult occurred twice a year excluding tranoceaned generation, with peaks in late july to early August and early September to middle september. Adult and eff were observed until middle November in the south region of Korea. A adult laid about 80~90 eggs. Developmental period was 4 for egg, 14~24 for larva, 7~8 days for pupa. Adult longevity was 7~10days. The percent reduction of grain yield by rice leaf folder was the greatest from the panicle formation to ripening stage. Percent damage leaf and percent of rice ripening showed linearly negative correlation (r=-0.539?? for 1st generation, -079?? for 2nd generation). Also percent damage leaf and rice yield showed linearly negative correlation.
TMAH/IPA/Pyrazine 수용액에서의 전기화학적 식각정지법에 관한 연구
박진성,최영규,정귀상 경북대학교 센서기술연구소 1997 센서技術學術大會論文集 Vol.8 No.1
This paper presentee the characteristics of Si anisotropic etching and electrochemical etch-stop in aqueous TMAH/IPA/Pyrazine solution. (100) Si etching rate of 0.747 μm/min which faster 86 % than TMAH 25 wt.%/IPA 17 vol.% solution was obtained using best etching condition at TMAH 25 wt.%/IPA 17 vol.%/pyrazine 0.1 g and the etching rate of (100) Si was decreased with more additive quantity of pyrazine. I-V curve of p-type Si in TMAH/IPA/Pyrazine was obtained. OCP and PP were -2 V and -0.9 V, respectively. Si diaphragm was obtained by electrochemical etch-stop in aqueous TMAH/IPA/Pyrazine solution.
최용규,정진교 東亞大學校 海洋資源硏究所 1992 硏究論文集 Vol.5 No.1
Load tests are executed on instrumented model piles to propose the transfer function about frictional force mobilized at open-end pile shaft. A new transfer function proposed by some existing transfer functions gives fairly close prediction to the measurement.
李鎭局,徐相壽,朴魯峰,李忠鎬,劉鍾哲,金洪奎,趙武濟,韓運東,池平植 충주대 2003 産業科學論文集 Vol.11 No.-
In this paper, we discuss actual conditions for running school of electrical and electronic engineering in domestic universities. Also, we catch hold of industrial circles's demands in electrical engineering education and analyze questionary results according to goes into effect school of electrical and electronic & information engineering in major of electrical and electronec engineering's students. Conclusively, we present suitable model in electrical engineering by correction of problems.
열복사의 색수차 공간여과를 이용한 레이저 용접 감시기술
김민석,백성훈,박승규,정진만,김철중 한국레이저가공학회 1999 한국레이저가공학회지 Vol.2 No.2
An innovative real-time weld monitoring technique using chromatic filtering of the thermal radiation from a weld pool is developed. This thermal radiation from the weld pool is focused on an aperture and the transmitted thermal radiation is monitored at two wavelengths with high-speed single-element detectors. Due to the chromatic aberration introduced in the focusing optics, the transmittance curve of thermal radiation varies by the wavelength. Owing to this difference in the transmittance, the local variation of thermal radiation from the weld pool can be monitored by processing the two spectroscopic signals from two detectors. In this paper, the algorithms to monitor the laser power on the weld specimen and the focus shift are investigated and the performances of laser power and focus monitoring are shown for a pulsed Nd:YAG laser welding. The monitoring of the weld pool size variation is also discussed.
Fatigue Properties of Fine Grained Magnesium Alloys after Severe Plastic Deformation
Chung Chin-Sung,Chun Duk-Kyu,Kim Ho-Kyung The Korean Society of Mechanical Engineers 2005 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.19 No.7
Fine grained AZ31 and AZ61 magnesium alloys produced by equal channel angular pressing (ECAP) were tested for investigating tensile and fatigue properties, including microstructure, monotonic tensile flow, fatigue life and crack growth rate. For the two alloys, the yield stress of the ECAPed sample was lower than that of the unECAPed (=as received) sample, because of the fact that the softening effect due to texture anisotropy overwhelmed the strengthening effect due to grain refinement. Grain refinement of the AZ31 and AZ61 alloys through ECAP was found not to be significantly effective in increasing fatigue strength.
Fatigue Properties of Fine Grained Magnesium Alloys after Severe Plastic Deformation
Chin-Sung Chung,Duk-Kyu Chun,Ho-Kyung Kim 대한기계학회 2005 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.19 No.7
Fine grained AZ31 and AZ61 magnesium alloys produced by equal channel angular pressing (ECAP) were tested for investigating tensile and fatigue properties, including microstructure, monotonic tensile flow, fatigue life and crack growth rate. For the two alloys, the yield stress of the ECAPed sample was lower than that of the unECAPed (=as received) sample, because of the fact that the softening effect due to texture anisotropy overwhelmed the strengthening effect due to grain refinement. Grain refinement of the AZ31 and AZ61 allays through ECAP was found not to be significantly effective in increasing fatigue strength.
Chung Sae Rom,Kim Gye Jung,Choi Young Jun,Cho Kyung-Ja,Suh Chong Hyun,Kim Soo Chin,Baek Jung Hwan,Lee Jeong Hyun,Yang Min Kyu,Sa Ho-Seok 대한영상의학회 2022 Korean Journal of Radiology Vol.23 No.10
Objective: To compare the clinical and radiological features of various etiologies of chronic diffuse lacrimal gland enlargement. Materials and Methods: We retrospectively reviewed 91 consecutive patients who underwent surgical biopsy for chronic diffuse lacrimal gland enlargement and were diagnosed with non-specific dacryoadenitis (DA) (n = 42), immunoglobulin G4-related dacryoadenitis (IgG4-RD) (n = 33), and lymphoma (n = 16). Data on patient demographics, clinical presentation, and CT imaging findings (n = 73) and MRI (n = 43) were collected. The following radiologic features of lacrimal gland enlargement were evaluated: size, unilaterality, wedge sign, angle with the orbital wall, heterogeneity, signal intensity, degree of enhancement, patterns of dynamic contrast-enhanced, and apparent diffusion coefficient value. Radiological features outside the lacrimal glands, such as extra-lacrimal orbital involvement and extra-orbital head and neck involvement, were also evaluated. The clinical and radiological findings were compared among the three diseases. Results: Compared to the DA and IgG4-RD groups, the lymphoma group was significantly older (mean 59.9 vs. 46.0 and 49.4 years, respectively; p = 0.001) and had a higher frequency of unilateral involvement (62.5% vs. 31.0% and 15.2%, respectively; p = 0.004). Compared to the IgG4-RD and lymphoma groups, the DA group had significantly smaller lacrimal glands (2.3 vs. 2.8 and 3.3 cm, respectively; p < 0.001) and a lower proportion of cases with a wedge sign (54.8% vs. 84.8% and 87.5%, respectively; p = 0.005). The IgG4-RD group showed more frequent involvement of the extra-orbital head and neck structures, including the infraorbital nerve (36.4%), paranasal sinus (72.7%), and salivary gland (58.6%) compared to the DA and lymphoma groups (4.8%–28.6%) (all p < 0.005). Conclusion: Patient age, unilaterality, lacrimal gland size, wedge sign, and extra-orbital head and neck involvement differed significantly different between lymphoma, DA, and IgG4-RD. Our results will be useful for the differential diagnosis and proper management of chronic lacrimal gland enlargement.