• Applied Biological Chemistry
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• 제23권4호
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• pp.246-250
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• 1980

Biological support products로서 알려진 효소복합제(酵素複合劑)인 Cytozyme이 한국(韓國)의 재배환경조건(栽培環境條件)에서 수도수량(水稻收量)에 미치는 효과를 검토(檢討)하였다. 진흥품종(振興品種)을 사용(使用)하여 강서사양토(江西砂壤土)(Fluvaquentic Eutrochrepts)의 서울대학교(大學校) 농과대학(農科大學) 답작포장(畓作圃場)에서 Seed Plus Cytozyme 종자침지(種子浸漬), Crop Plus Cytozyme 묘근침지(苗根浸漬), 생육기별(生育期別), 농도별(濃度別), Crop Plus 엽면살포(葉面撒布) 등의 효과를 분석(分析)하였다. 1980년(年)의 불리(不利)한 기상조건(氣象條件) 및 병발생(病發生)으로 반복간(反覆間) 변이(變異)가 심(甚)하여 처리간(處理間)에서 통계적(統計的)인 유의성(有意性)은 없었으나 엽면살포(葉面撒布)는 유수형성기(幼穗形成期), 출수기(出穗期)보다는 분벽기(分蘗期)에, 처리수준(處理水準)에서는 450ml/ha보다는 900ml/ha 처리(處理)하는 것이 증수(增收)되는 영향이었다. 종자침적(種子浸漬) 및 엽면살포(葉面撒布)의 이중처리(二重處理)한 효과가 가장 높았으며 무처리구(無處理區)에 비(比)하여 16%의 증수(增收)를 나타내었다.

• Nuclear Engineering and Technology
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• 제54권7호
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• pp.2592-2598
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• 2022

Research groups in the field of PET instrumentation are studying time-of-flight(TOF) technology to improve the signal-to-noise ratio of PET images. Scintillation light transport and collection plays an important role in improving the coincidence resolving time(CRT) of PET detector based on a pixelated crystal array. Four crystal arrays were designed by the different optical reflection configuration such as external reflectors and surface treatment on the CRT and compared with the light output, energy resolution and CRT. The design proposed in the study was composed of 8 × 8 LYSO crystal array consisted of 3 × 3 × 15 mm³ pixels. The entrance side was roughened while the other five surfaces were polished. Four sides of all crystal pixels were wrapped with ESR-film, and the entrance surface was covered by Teflon-tape. The design provided an excellent timing resolution of 210 ps and improved the CRT by 16% compared to the conventional method using a polishing treatment and ESR-film. This study provided a method for improving the light output and CRT of a pixelated scintillation crystal-based brain TOF PET detector. The proposed configuration might be an attractive detector design for TOF brain PET requiring fast timing performance with high cost-effectiveness.

• 대한두개안면성형외과학회지
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• 제25권1호
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• pp.22-26
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• 2024

Background: This study analyzed the demographic characteristics of patients with facial palsy who were treated using either dynamic or static procedures. This study aimed to compare the frequency of procedure implementation and age distribution between the two groups. Methods: This study retrospectively analyzed the medical records of patients treated for facial palsy at a single institution from 2014 to 2022. Among cases included in our study, dynamic procedures involved cross-facial nerve graft and latissimus dorsi or gracilis muscle flap transfer. Static procedures included gold weight insertion, canthopexy, browlift, and thread lift/static slings. Results: Among the 31 patients included in our study, eight (25.8%) incorporated dynamic techniques, and the average age of patients was 44.75 years (range, 24-68 years) with a male to female ratio of 1:4. The remaining 23 patients (74.2%) underwent a static procedure, of which the average age was 59.17 years (range, 23-81 years) which was statistically significantly higher than the average age of 44.75 of dynamic patients (p= 0.013). Regarding the timing of treatment after diagnosis, no patient underwent dynamic procedures more than 20 years after initial diagnosis. A greater diversity in the timing of treatment was observed in the static group. All patients who underwent dynamic procedures were treated using static procedures during the study period. Conclusion: Because aesthetics-based static techniques are typically quick outpatient procedures that can be performed under local anesthesia, our study shows that these are often preferred treatments for all age groups, especially for debilitated or older patients. Further research is required to investigate the long-term functional outcomes of these surgical techniques in a wider population of patients.

• Journal of Oral Medicine and Pain
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• 제20권2호
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• pp.407-420
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• 1995

This study was performed to evaluate and compare conservative treatment results by several parameters such as age, sex, symptom duration, type and timing of joint sound, parafunctional habits, splint type, and diagnostic classification. There have been too many articles reporting long term results of conservative treatment but articles related to comparison of treatment results by patients' self-evaluation have been rarely reported. For this study 258 patients with temporomandibular disorders(TMDs) were selected and examined by routine diagnostic procedure for TMDs. The subjects were classified into 5 TMDs subgroups ad treated with conservative treatments involving splints, physical modalities, jaw exercises, and counseling. Visual analogue scale(VAS) about pain, joint sound, and mouth opening limitation was recorded respectively during treatment period. From the VAS data and treatment duration, VAS treatment index(VAS Ti) was calculated. The obtained results were as follows : 1. Pain was the most frequent main symptom in subjects with temporomandibular disorders, and main symptom for mouth opening limitation was comparatively less than for pain or sound in disk displacement with reduction group or in degenerative joint disease group. 2. Degenerative joint disease group had the most poor treatment results and highest occlusal index of Helkim's index. 3. Good prognosis for conservative treatment was observed in acute group, under 6 months than chronic group, 6months over in symptom duration, and subjects with 40 years over in age showed the most poor prognosis. 4. Subjects treated with anterior repositioning splint had better treatment results than subjects treated with centric relation splint, but statistical significance in VAS Ti and treatment duration was not observed. 5. Treatment results according to affected side, types and point of joint sound did not show consistent statistical results. 6. The result for conservative treatment was observed poor in subjects with bruxism and clenching. 7. In studying coincidence between preferred chewing and affected side, frequency of preferred chewing side, in unilateral affection, was higher in ipsilateral than in contralateral side.

• Clinical and Experimental Pediatrics
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• 제54권3호
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• pp.111-116
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• 2011

Childhood chronic myelogenous leukemia (CML) is a rare hematologic disease, with limited literature on the methods of treatment. Previously, allogeneic hematopoietic stem cell transplantation (HSCT) was considered the only curative treatment for this disease. Treatment with imatinib, a selective inhibitor of the BCR-ABL tyrosine kinase (TKI), has resulted in prolonged molecular response with limited drug toxicity. Imatinib is now implemented in the primary treatment regimen for children, but the paucity of evidence on its ability to result in permanent cure and the potential complications that may arise from long-term treatment with TKIs have prevented imatinib from superseding HSCT as the primary means of curative treatment in children. The results of allogeneic HSCT in children with CML are similar to those observed in adults; HSCT-related complications such as transplant-related mortality and graft-versus-host disease remain significant challenges. An overall consensus has been formed with regards to the need for HSCT in patients with imatinib resistance or those with advanced-phase disease. However, issues such as when to undertake HSCT in chronic-phase CML patients or how best to treat patients who have relapsed after HSCT are still controversial. The imatinib era calls for a reevaluation of the role of HSCT in the treatment of CML. Specific guidelines for the treatment of pediatric CML have not yet been formulated, underscoring the importance of prospective studies on issues such as duration of imatinib treatment, optimal timing of HSCT and the type of conditioning utilized, possible treatment pre-and post-HSCT, and the role of second-generation TKIs.

• 환경생물
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• 제17권4호
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• pp.459-465
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• 1999

본 연구는 우리나라 습지의 주요 우점종인 갈대, 줄 및 애기부들을 대상으로, 자연습지에서 생육기 중에 시기와 횟수를 달리하여 지상부를 제거하는 것이 생산력과 영양염류 제거능에 미치는 영향을 규명하고자 하였다. 지상부 제거는 세 종 모두에서 지상부 생산력과 영양염류 흡수량을 증가시켰으며, 최대효과를 위한 시기와 횟수 및 효과의 정도는 종에 따라 차이를 보였다. 즉, 갈대는 1차년도 실험에서 6월 제거구의 연총생산력이 1,014g/$m^2$로서 대조구의 1.9배이었고, 2차년도에는 5월 제거구가 1,494g/$m^2$ 로서 대조구의 1.3배이었다. 줄은 8월 제거구의 생산력이 1,386g/$m^2$으로서 대조구의 1.2배, 애기부들은 6월과 8월의 3회 제거구와 8월 제거구의 생산력이 각각 1,670, 1,620g/$m^2$로서 대조구의 1.1~l.2배이었다. 영양염류 제거량에서 갈대는 질소와 인이 1차년도에서 대조구의 2.0배와 1.8배, 2차년도에서 각각 1.4배, 줄은 2.4배와 1.8배 그리고 애기부들은 1.8배와 1.9배로서 생산력의 증가비율보다 더 많은 영양염류를 제거하였다. 종합적으로 생산력과 영양염류 제거량 그리고 관리의 경제적인 측면을 고려할 때, 갈대는 5~6월과 10월의 2회, 그리고 줄과 애기부들은 8월과 10월의 2회 제거하는 것이 효과적인 것으로 판단한다.

• Clinical and Experimental Pediatrics
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• 제50권11호
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• pp.1049-1054
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• 2007

Myocarditis represent an important condition encountered by general pediatricians & general practitioners. Its presentation is varied, and therefore a high index of suspicion must be maintained when the possibility of myocarditis is raised. A progression from viral myocarditis to dilated cardiomyopathy has long been hypothesized. Treatment is initially aimed at achieving hemodynamic stability and is largely supportive. There is currently little evidence to support the immunomodulatory or specific antiviral therapies. Pediatric cardiomyopathies are a heterogeneous group of disorders with diverse genetic, infectious, mitochodrial and metabolic etiologies. The timing and severity of presentation vary according to cardiomyopathy type as well as genetic and ethnic factors. The behavior of specific cardiomyopathies can be predicted by morphological and functional attributes, as well as underlying patient characteristics.

• 대한핵의학회지
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• 제36권1호
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• pp.64-73
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• 2002

FDG-PET has potential as an effective, non-invasive tool to measure tumor response to anticancer therapy. The changes in tumor FDG uptake may provide an early, sensitive guide to the clinical and subclinical response of tumors to cancer treatment, as well as functional assessment of residual viable tumor. This may allow the evaluation of subclinical response to anticancer drugs in early clinical trials and improvements in patients management. However, monitoring tumor responses with FDG-PET is still in its infancy. The methods of measurement of FDG uptake are currently diverse and timing with respect to anti cancer therapy variable. Therefore, there is a need for larger-scale trials along with standardized methodology and a collection of reproducibility data. The recent guideline from the European group seems to be the most comprehensive. In future, the combination of morphological and metabolic images may improve the quantitative nature of these measurements by relating tumor viability to total tumor mass. More data on sensitivity and specificity of FDG-PET technique are needed along with continued advancement of PET methodology.

• Journal of Ginseng Research
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• 제6권1호
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• pp.56-66
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• 1982

The effects of various dehiscent application such as dehiscent materials (big chaffs, vermiculite etc.), growth regulators and agricultural chemicals (plant protector.) on stimulation of dehiscence and shortening of dehiscent period were investigated Results obtained were as follows : 1. The moisture content of endosperm and seed coat at 10 day after dehiscent application amounts between 40% and 50%. 2. Endosperm diameter was increased with time of stratification, and the embryo growth showed in linear function, 3. Non-dehiscent seed showed also normally development of embryo, and the property of dehiscence dependent from physico-chemical nature of ginseng seed coat. 4. The best dehiscent materials were big chaffs and followed vermiculite, sand and sand with big chaffs. 5. The effect of dehiscence of ginseng seed showed higher activity in fungi than in bacteria in general. 6. Agricultural chemicals ( plant Protector) reduced the dehiscent rate of ginseng seed 7. The best timing of dehiscent treatment was between August 1 and August 10 but the smaller amount of dehiscent rate after August 10 dehiscent appllication indicated that big chaffs and growth regulator treatment may be controlled shortening of dehiscent period of ginseng seed.

• Journal of Periodontal and Implant Science
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• 제44권6호
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• pp.293-299
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• 2014

Purpose: Systemic disease can manifest oral signs at an early phase, which may be crucial for the diagnosis and timing of treatment. This report describes two patients who presented with gingival enlargement as an early sign of acute leukemia. Methods: Two patients presented with oral symptoms including severe gingival enlargement. The progress of their symptoms was associated with underlying systemic disease. Results: The patients were transferred to the Department of Hematology and diagnosed with acute myelomonocytic leukemia. They received appropriate treatment and survived. Conclusions: Gingival enlargement can be caused by underlying systemic diseases. Accurate diagnosis and timely referral are important for preventing a fatal situation. It must be emphasized that some oral signs and symptoms may be closely correlated with systemic diseases.