砂耕栽培에 있어서 질소 및 칼리의 施肥水準의 오이의 生育, 收量 및 無機成分吸收에 미치는 影響

權成煥,鄭淳宰,具禹書,鄭景泰 東亞大學校 大學院 1993 大學院論文集 Vol.18 No.-

This experiment was conducted to study the effect of Nitrogen and Potassium treatment on growth, yield and content of mineral elements the results were summarized as follows; 1. Growth and Yields were more effective in N treatment with 8g per plant, were more effective in K treatment with 16 me per liter 2.Content of mineral elements in leaves were a lot of N and MG in N treatment, were a lot of P content in K treatment. 3. The content of mineral of Petiol, fruit and Xyleme sap. N and K were more contented in petiole, as the others were more contented in Xyleme sap. Ca was contented a little in fruit. 4. Absorption of water was increased in the N treatment with 8g per plants, in the K treatment with 16 me liter. The contents of chlorophyll was increased as the level of Nitrogen was increased in N treatment while, decreased on young leave in K treatment.

척추 주위근의 단면적과 등척성 요추부신전 근력간의 상관 관계

권정이,이강우,김현숙,김종문,안중모 大韓再活醫學會 2000 Annals of Rehabilitation Medicine Vol.24 No.2

리튬이 도핑된 막을 이용한 실리콘-실리콘 접합

정지원,주병권,최우범,정성재,이남양,최두진,오명환 경북대학교 센서기술연구소 1997 센서技術學術大會論文集 Vol.8 No.1

Silicon-to-silicon anodic bonding was accomplished using lithium doped interlayer. Lithium doped interlayers were deposited on silicon substrates by electron beam evaporation, which has a fast deposition rate compared with sputtering method. Silicon-to-silicon bonding occurs in the range of temperatures from 250℃ to 300℃ with the applied voltages from 70V_(DC) to 100V_(DC). The bonding strength obtained from tensile test was about 5MPa under the condition of 80V_(DC) in 300℃. The surface morphology of lithium doped interlayer was studied with the atomic force microscopy (AFM). Finally, secondary ion mass spectroscopy (SIMS) analysis was carried out in order to investigate the role of the lithium ions in bonding mechanism.

[논문]토사터널 굴착시 발생하는 구조물의 부등침하 억제용 마이크로파일의 효과에 관한 연구

박진우,권정근,임종철 釜山大學校生産技術硏究所 2007 生産技術硏究所論文集 Vol.66 No.-

도심지에서 건설되는 각종 터널 시공시 현장여건 동 그 특수성에 따라 지중 및 지상에 존재하는 각종 인접구조물에 대한 안정성 확보가 필수적인 요건으로 대두되고 있다. 따라서 이같은 문제를 극복하면서 깊은 기초로서의 역학적 특성을 가지며, 현장의 적용성 및 시공성/ 경제성 등 여러 가지 장점을 가진 마이크로파일을 적용함에 있어서,선행연구에서 규명되어진 역학적 특성을 통해 파일의 적절한 보강형식과 현장의 적용성 및 보강의 효율성을 높이기 위한 수치해석을 실시하고/ 터널 인접구조물의 부등침하 안정검토 해석결과와 현장여건을 고려한 마이크로파일의 보강각도와 길이에 대한 효율적인 보강대책을 제시 하고자 한다.

[18F]FDG PET을 이용한 강박증 환자에서 뇌 포도당 대사의 이상에 관한 연구

권준수,이동우,이재성,최정임,이동수,정준기,조맹제,이명철,류인균 대한신경정신의학회 2000 신경정신의학 Vol.39 No.2

연구목적: 강박증에 대한 기능적 뇌영상 연구들에서 강박증 환자들의 안와전두엽과 미상핵의 대사율 증가 소견이 비교적 일과되게 발표되어 왔으며, 전두-피질하 회로의 이상이라는 이론이 수립되기도 하였다. 그러나 기존의 연구들은 강박증의 유병기간에 따른 구분없이 시행된 연구였고, 영상분석 방법에 있어서도 관심영역 방법을 이용했다는 한계를 지니고 있다. 본 연구의 목적은 첫째, 강박증의 유병기간에 따라 환자군을 구분하여 PET 영상소견을 분석함으로써 유병 기간에 따른 차이가 있는지를 조사하였으며, 둘째, 강바증 환자의 포도당 양전자방출 단층촬영(18-Fluor-deoxyglucose Positron Emission Tomography : FDG-PET) 영상분석에 통계적 매개변수 지도법(Statistical Parametric Mapping : SPM)을 이용함으로써 강박증의 병인기전 및 강박증상과 뇌기능 간의 관계를 명확히 규명하고자 하였다. 방법: 구조적 면담도구(Structured clinical interview for DSM-IV : SCID-IV)를 적용하여 진단된 12명의 강박증 환자들과 10명의 정상 대조군에 대해 FDG-PET을 촬영하여 SPM으로 분석하였다. PET 촬영 전 적어도 4주 동안에는 약물복용을 하지 않은 상태였다. 결과: 1) 환자군과 대조군의 비교 : 강박증 환자군은 대조군에 비해 양측 두정 영역의 대사율이 유의하게 감소되어 있었으며(P<0.01). 대사증가를 보인 영역은 없었다. 강박증의 유병기간이 10년 이상인 만성강박증 환자 4명은 양측 안와전두엽에서 유의한 대사증가 소견을 보였으며(P<0.01), 양측 두정영역에서 유의한 대사감소 소견을 보였다 (P<0.01), 유병기간이 10년 이하인 환자에서는 전체 환자군의 분석에서와 마찬가지로 대조군에 비해 유의한 대사증가 소견을 보인 영역은 없었으며, 양측 두정엽 부위에서 유 의한 대사 감소 소견을 보였다.(P<0.01). 2) 강박증상의 심각도와의 상관관계 분석 : 우측 두정엽의 대사율은 강박장애 척도 점수와 유의한 음의 상관관계를 보였으며(p<0.01), 양측 시상 영역의 대사율은 예일-브라운 강박장애 척도의 강박장애척도 점수와 유의한 양의 상관관계(p<0.01)를 보였다. 결론: 본 연구는 결과는 기존의 연구들에서 보고된 안와전두엽의 대사 증가 소견이 강박증의 만성화로 인해 나타나는 2차적 장애이며, 두정엽의 대사 저하가 보다 1차적인 장애일 가능성을 시사한다. Baxter가 수립한 전두-피질하 회로 이론은 두정엽의 이상을 포함하는 전두-두정엽 복합체 이론으로 확장되어야 할 것이다. Objectives: Functional imaging studies on obsessive-compulsive disorder(OCD) subjects have repeatedly reported increased metabolism in orbitofrontal lobes and caudate nucleus, resulting in the "frontal-subcortical" circuit abnormality theory. Limitations of the previous studies to date include little consideration for the duration of illness, and the use of regions of interest methods, as an image analysis method. Our study objectives are 1) to include the duration of illness as an important study variable, and 2) to use Statistical Parametric Mapping(SPM) method in order to tap relations between the brain function and the psychopathology and symptoms of OCD. Methods: The [18] fluorodeoxyglucose positron emission tomography(FDG-PET) scans of OCD subjects and normal comparison subjects, as diagnosed by the Structured Clinical Interview for DSM-IV(SCID-IV), were analyzed using SPM. Results: 1) Comparison of OCD and control groups : OCD subjects had significantly decreased metabolism in both parietal lobes and didn't have any areas of increased metabolism in comparison to comparison subjects(p.<0.01). four OCD subjects with the illness duration of 10 years or longer, had significantly increased metabolism in both orbitofrontal lobes<p<0.01). OCD subjects whose illness duration is shorter than 10 years didn't have any areas of increased metabolism and had significantly decreased parietal lobe metabolism, as in the analyses of all subjects(p<0.01). 2) Correlation analysis between areas and symptom severity : Metabolism of both thalamic sreas showed significant positive correlation with Yale-Brown Obsessive-Compulsive Scale(Y-BOCS) scores(p<0.01). Metabolism of right parietal area showed significant negative corre lation with Y-BOCS scores(p<0.01). Conclusions: The current findings suggest that the increased metabolism in orbitofrontal lobe, previously rported, may be a secondary phenomenon due to the extended illness dur- ation and that decreased metabolism in the parietal lobes are primary abnormality in OCD subjects. Thus Baxter's fronto-subcortical circuit theory should be extended into "fronto-pari-etal" complex theory, which includes the parietal lobes.

Water glass로부터 ZSM-5의 합성

우훈희,홍지숙,서정권,이관영,이정민 한국공업화학회 2002 응용화학 Vol.6 No.2

In order to seek optimum conditions for ZSM-5 formation in the absence of organic template,the effects of both starting composition and water glass as silica source were examined. Water glass was most inexpensive among silica sources, but this was difficulty in reactant control because of contained much alkali ingredient, Considering environmental problem and economic performance,chose alkali drawing-out method to use methanol newly to remove alkali ingredient of waterglass. Characterization of ZSM-5 was carried out by means of XRD, SEM.

土壤栽培에 있어서 질소 및 칼리의 施肥水準이 오이의 生育, 收量 및 無機成分吸收에 미치는 影響

具禹書,權成煥,鄭淳宰,鄭景泰 東亞大學校 大學院 1993 大學院論文集 Vol.18 No.-

Cucumbers were grown at 5 levels of Potassium and Nitrogen to stuudy the effect of N,k concentration on growth, yield and content of mineral elements. 1. Growth and yields were increased in N treatment with 16g per plant, and wrer increase in K treatment with 16me per liter. 2. The content of mineral elements of in leaves were higher N teatment than K treatment in content of T-N and Mg, and content of P was high in K treatment. 3. The content of mineral of petiole, fruit and Xyleme sap. were detected. The content in Xyleme sap, was most in N treatment all content expect of NO₃-N. NO₃-N and K were contented a lot in petiole Ca was contented a little in fruit. In K treatment, No-N and K were contented a lot in petiole, and the others were contented in Xyleme sap. Ca was contented a little in fruit. 4. The content of mineral in soil was detected in N and K treatment content of mineral was a little after than before treatment P while in case of P content was higher before treatment 5. absorption of water in cucumber plants was increased in N treatment with 8g per plants, while decreased in the K treatment 8 me per plant. The contents of chlorophyll was increased as the levels of Nitrogen was increased in N treatment, however, decreased on young leave as the level of Poassium was incresed in K treatment.

응급실로 내원한 소아 장중첩증의 임상양상

이우용,정연권 대한응급의학회 1998 대한응급의학회지 Vol.9 No.2

Back ground : Intussuseception is one of the most common diseases requiring abdominal emergency care in early childhood. The delay in diagnosis increases morbidity and, in particular, reduces the success rate of the non-surgical method of reduction. In this report, the authors determined the clinical characteristics of pediatric patients with intussusception, and the factors involved in delayed diagnosis and the efficacy of doppler ultrasonography in diagnosis. Methods: The authors performed a retrospective study of 44 cases in 42 patients with intussusception who had visited the emergency room of SamSung medical center from January 1st to December 31, 1996. Results: The sex ratio was equal and 64.3% of the patients were under 1 year of age. The prevalent complaints were vomiting(36.4%) and abdominal pain(33.8%). Ultrasonography was used in 11 cases, 3 of them were performed because of obscure symptoms and the rest were due to diagnostic delay. The average time past from visit to diagnosis was 4hours and 20 minutes, and there were 4 diagnostic delays. Air enema reductions were unsuccessful in 11 cases(25%) and that was related to hospital-visit delays and long time past from symptom onset to diagnosis. There were no motalities. Conclusion: To reduce delays in diagnosis and unnecessary operations, the use of doppler ultrasonography is recommanded In suspicious cases. And to reduce the hospital-visit delays, related to the failure on non-surgical reduction, the education about this disease is necessary.

흰쥐 내측 전정핵 세포의 막전도도와 시냅스 전달에 대한 Opioid 및 Orphan Opioid의 작용

김권수,최정희,천상우 원광대학교 치의학연구소 2004 圓光齒醫學 Vol.13 No.1

Whole cell patch clamp recordings were carried out on the medial vestiidar nucleus (MVN) neumns in the brainstem slice of neonatal rats to investigate the actiom of the opioid and orphan opioid (nociceptin) on the membrane conductances and synaptic transmission. Nociceptin (2μM) inhibited the spontaneous discharge in the majority (83%) of MVN neurons. This inhibition was insensitive to the non-specific opioid receptor antagonist naloxone (10μM), but was effectively antagonized by the selective opioid receptor-like 1 (ORL_1) receptor antagonist, [Nphe'] nociceptin (1-13)NH₂ (3μM). The spontaneous discharges were inhibited by the 6-opioid receptor agonist, [D-ala², D-leu^5]-enkephaline (DADLE) (10μM) in the majority of MVN neurons (73%), but not by the p-cipioid receptor agonist DAMGO (3μM) and δ-opioid receptor agonist, deltoxphin (2μM). The inhibitory effect of nociceptin was more prominent than that of DADLE. Nociceptin and DADLE had no effect on the rate or amplitude of miniatwe inhiiitory postsynaptic currents (mIPSCs). Nociceptin induced an outward current, and which was blocked by [Nphe^1] nociceptin(1-13) NH_2 in MVN neurons. Outward current reversed at -81±2 mV, which was close to the K' equilibrium potential as calculated by the Nernst equation in 6mM extracellular potassium solution. This indicates that the action of nociceptin involves postsynaptic recepton on the MVN n m m. Similar current activation was observed with DADLE. In conclusion, these results suggest that nociceptin and DADLE modulate neuronal excitability by activating a K' umductance in postsynaptic neurons, not by modulation of synaptic transrmssion in MVN neurons.

유방암 환자에서 bcl-2 단백 발현의 예후 인자로서의 의의

류진우,박종권,정민,박동국,김정택,이두선,이찬영,전호진 단국대학교 1998 論文集 Vol.32 No.-

Breast cancer in women pose a problem, and it can be difficult at times to evaluate the possibility of the cancer recurrence in node negative early cancer. The reliable prognostic markers are needed in breast cancer management to help clinicians identify the patient with the high risk of recurrence and arrive at more rational decisions for proper treatment. In order to investigate the prognostic significance of bcl-2, an immunohis-tochemical staining was performed in 35 tissue sections from paraffin blocks of primary breast cancer. Bcl-2 positivity was 43%. No relation could be observed between bcl-2 expression and known prognostic factors(tumor size, lymph node metastasis state, histologic grade, and nuclear grade), There was strong relation between bcl-2 expression and estrogen receptor positivity (ER) (P〈0.05). No relation is found between bcl-2 expression and c - erbB - 2 expression. These results suggest that bcl-2 expression is associated with a favorable prognostic factor(ER) but it is of no value as independent prognostic factor to the clinician in identifying the patients with high risk of recurrence.