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l'Yi WS, Park YJ, Kim KY, Kim Y. Einstein Yang-Mills action with gauged BRST symmetry. PHYSICAL REVIEW. D, PARTICLES AND FIELDS 1990; 42:716-718. [PMID: 10012889 DOI: 10.1103/physrevd.42.716] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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177
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Park YJ. Korean patterns of women's labor force participation during the period, 1960-1980. KOREA JOURNAL OF POPULATION AND DEVELOPMENT 1990; 19:71-90. [PMID: 12283835] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/19/2023]
Abstract
"This article investigates how the patterns of Korean women's labor force participation have changed during the 1960s and the 1970s, [periods] of rapid economic development and social changes. The discussion focuses on the comparison of three sets of cross-sectional data derived from the 1960, 1970 and 1980 [Republic of Korea] censuses. Although not dramatic, the gross rates of women's labor force participation show an upward trend. A very high and rapidly increasing rate of rural women's labor force participation did not result in a big increase in the total rate because of the significant rise in the proportion of the population living in urban areas. However, the employment structure and patterns of women's labor force participation have changed significantly, especially in urban areas."
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178
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Chung HC, Roh JK, Park YJ, Lee SI, Min JS, Lee JT, Lee KB, Kim BS. Locally advanced unresectable gastric cancer successfully resected after neoadjuvant chemotherapy with FADE regimen. Yonsei Med J 1990; 31:74-9. [PMID: 2346043 DOI: 10.3349/ymj.1990.31.1.74] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
The prognosis of unresectable advanced gastric cancer is extremely poor. We tried a neoadjuvant chemotherapy in locally advanced unresectable stomach cancer diagnosed by initial explo-laparotomy. After chemotherapy with the FADE regimen (5-fluorouracil + adriamycin + cisplatin + etoposide), the patient was diagnosed clinically as a complete response state on re-staging with radiological gastrointestinal study, fiber-gastroscopy and computerized tomography. During the second-look operation, the advanced cancer was completely resected and the pathological diagnosis was early gastric cancer (EGC) type IIc, stage II (T1N2Mo).
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179
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Kim CH, Kim KY, Kim Y, Lee HW, l'Yi WS, Park YJ. Superalgebras for superstring states. PHYSICAL REVIEW. D, PARTICLES AND FIELDS 1989; 40:1969-1973. [PMID: 10012027 DOI: 10.1103/physrevd.40.1969] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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180
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Park YJ, Lee WY, Hahn BS, Han MJ, Yang WI, Kim BS. Chlorophyll derivatives--a new photosensitizer for photodynamic therapy of cancer in mice. Yonsei Med J 1989; 30:212-8. [PMID: 2588660 DOI: 10.3349/ymj.1989.30.3.212] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
The in vivo photosensitizing efficacy of chlorophyll derivatives (CpD), which had been developed as a new photosensitizer, was compared with that of hematoporphyrin derivatives (HpD). A murine tumor model implanted subcutaneously with S-180 cells on the abdomen was used. The CpD or HpD was administered by intratumoral injection, and light of appropriate wavelength was irradiated on the tumor areas for 10 minutes at 1h and 24h or 24h and 48h after the injection of photosensitizer. When CpD was injected, the early irradiation group (1h and 24h) showed a 100% tumor cure rate; however, the late irradiation group (24h and 48h) showed a 60% tumor cure rate (p less than 0.01). This showed that the early irradiation with light after injection of CpD was an important factor for obtaining better results. With HpD, there was no difference in tumor cure rate between early (1h and 24h, 80%) and late irradiation (24h and 48h, 80%) groups. Thus, in early irradiation groups, the tumor cure rate using CpD (100%) was superior to that of HpD (80%) (p less than 0.05). However, in late irradiation groups, the tumor cure rate using CpD (60%) was inferior to that of HpD (80%), but this difference was not statistically significant (p greater than 0.1). Pathologic sections of these tumors were made before treatment and 48h and 3 weeks after treatment. These showed geographic necrosis at 48h after treatment and no viable tumor tissue at 3 weeks after treatment. Our results showed that CpD was as effective as HpD as a photosensitizer for in vivo photodynamic therapy.
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181
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Kim CH, Kim KY, Kim Y, Park YJ. Maximal supergravities in SU(8/1). PHYSICAL REVIEW. D, PARTICLES AND FIELDS 1989; 39:2967-2970. [PMID: 9959526 DOI: 10.1103/physrevd.39.2967] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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182
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Yang HS, Park YJ. [The effect of composition on the mechanical properties of composite resin]. TAEHAN CH'IKKWA UISA HYOPHOE CHI 1989; 27:185-200. [PMID: 2600517] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The objective of this investigation was to determine whether the composition of composite resin affects the amount of residual monomers and the strength of resin. Six types of resin composition were designed and 30 composite resin specimens were made in glass mold of 6mm diameter and 3mm height. The residual monomer of each specimen was extracted by 10cc ethanol solution for 1, 2, and 3 days of experiment. UV/Vis spectrophotometer was used to estimate the amount of residual monomer of the specimen, and universal testing machine was used to test the diametral tensile strength of the composite resin. The results were as follow; 1. Composite resins of 1% benzoyl peroxide concentration released the higher level of residual monomers than the resin of 0.8% benzoyl peroxide concentration. 2. t-Butylaminoethylmethacrylate.HF of 17% concentration exhibited the greater level of residual monomer than the other resin monomers. 3. As the concentration of the trimethylolpropane trimethacrylate increased, the amount of Bis-GMA residual monomer increased. 4. Composite resin of 1% benzoyl peroxide concentration showed higher tensile strength than the resin of 0.8% benzoyl peroxide concentration. 5. As the concentration of trimethylolpropane trimethacrylate increased above 50%, the strength of the composite resin decreased.
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183
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Yang KH, Park YJ. An experimental study of the effects of light exposure time on the depth of curing of composite resin. TAEHAN CH'IKKWA UISA HYOPHOE CHI 1989; 27:171-84. [PMID: 2600516] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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184
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Park YJ, Koh EH, Kim J, Roh JK, Chang J, Ahn CM, Sohn HY, Kim SK, Lee WY, Kim K. Phase II study of cyclophosphamide, doxorubicin, and vincristine (CAV) and etoposide plus cisplatin (EP) alternating chemotherapy combined with radiotherapy in small cell lung cancer. Yonsei Med J 1989; 30:30-7. [PMID: 2545051 DOI: 10.3349/ymj.1989.30.1.30] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
The development of drug resistance is the major limiting factor influencing the survival of patients with small cell lung cancer (SCLC). We have thus examined the activity of cyclophosphamide, doxorubicin and vincristine (CAV) alternating with etoposide and cisplatin (EP) in 35 patients with SCLC. The treatment courses were alternated every 3 or 4 weeks. After induction chemotherapy, patients with limited disease (LD) received thoracic radiotherapy (5000 cGy), prophylactic cranial irradiation (3000 cGy) and maintenance chemotherapy and patients with extensive disease (ED) received maintenance chemotherapy only. In this group of 35 patients, 13 had limited disease (LD) and 22 had extensive disease (ED). After completion of the therapy, 100% of the patients with LD achieved complete plus partial remission (CR + PR) and 68% of the patients with ED achieved CR + PR. The median survival time was 66 weeks (15.3 months) in patients with LD and 44 weeks (10.2 months) in patients with ED. The over all survival for patients with LD was superior to that for patients with ED (p less than 0.05). Also, median response duration for patients with LD (35 wks) was longer than that for patients with ED (17 weeks) (p less than 0.05). The primary site was the most vulnerable site to relapse (18 patients). Toxicity was mild to moderate and acceptable, and there were no treatment-related deaths. These results suggest that the alternation of CAV and EP is effective treatment strategy in the management of SCLC. A randomized controlled study will be required to discriminate the actual effect of this alternating regimen.
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185
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Kim BS, Yoo HS, Park YJ, Loh JJ. Current status and future aspects on treatment of liver cancer. Cancer Chemother Pharmacol 1989; 23 Suppl:S118-20. [PMID: 2538257 DOI: 10.1007/bf00647255] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Among 80 patients with advanced hepatocellular carcinoma, treated by systemic chemotherapy, 19 patients (24%) achieved partial response or stable disease. The median survival time of responders was 20 weeks. Radioiodinated fatty acid esters ([131I]lipiodol) are localized in hepatoma tissue for a considerable time. Taking advantage this phenomenon, there is a potential therapeutic effect of [131I]lipiodol, since the radioactive oil can deliver a therapeutic dose of internal radiation. The response rate of patients who had a small hepatoma (less than 5 cm in diameter) was 80%. Among 25 responders, 12 cases are alive after more than 1 year. A pilot study of hyperthermia, using a heating device capable of delivering radiofrequencies, combined with radiotherapy or chemotherapy, demonstrated that this modality is safe and effective in the treatment of advanced hepatocellular carcinoma. Of the 19 patients treated, 47% showed partial remission or stable disease. The median survival time of 9 responders was 9 months. Among the 9 responders 3 patients survived for over 1 year.
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186
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Park YJ. Gauged Yang-Mills-Einstein supergravity with three-index field in seven dimensions. Int J Clin Exp Med 1988; 38:1087-1090. [PMID: 9959245 DOI: 10.1103/physrevd.38.1087] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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187
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Kim KM, Choi HS, Kim GR, Hong WP, Chun YM, Park YJ. Laryngeal pacemaker using a temperature sensor in the canine. Laryngoscope 1987; 97:1207-10. [PMID: 3498866 DOI: 10.1288/00005537-198710000-00016] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
With the use of a temperature sensor that would detect temperature changes during the respiratory cycle in the pharynx, electrical stimulation of the posterior cricoarytenoid muscle was achieved in dogs whose recurrent laryngeal nerves were artificially paralyzed. Due to the temperature difference between inspiratory and expiratory air flow, a trigger pulse was generated at the beginning of inspiration. The stimulation pulse following the trigger pulse stimulated the electrodes inserted into the posterior cricoarytenoid muscles. In all five canines, obvious abduction of the vocal folds synchronized with inspiration was observed during electrical pacing.
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188
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Park YJ, Kim KS. [Clinical study on the primary jaw bone tumors]. TAEHAN CH'IKKWA UISA HYOPHOE CHI 1987; 25:679-92. [PMID: 3477605] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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189
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Myung YS, Cho BH, Park YJ. Unstable compactification in ten-dimensional theories. Int J Clin Exp Med 1987; 35:3815-3824. [PMID: 9957642 DOI: 10.1103/physrevd.35.3815] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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190
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Myung YS, Cho BH, Park YJ. Orthonormal gauge and affine geometry in string theory. PHYSICAL REVIEW. D, PARTICLES AND FIELDS 1987; 35:2040-2042. [PMID: 9957885 DOI: 10.1103/physrevd.35.2040] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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191
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Kwon OJ, Kim YD, Myung YS, Cho BH, Park YJ. Stability of the Schwarzschild black hole in Brans-Dicke theory. Int J Clin Exp Med 1986; 34:333-342. [PMID: 9957151 DOI: 10.1103/physrevd.34.333] [Citation(s) in RCA: 32] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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192
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Myung YS, Cho BH, Park YJ. Stability analysis of M4 >= 2 >= 2 >= 2 in the ten-dimensional Einstein/Maxwell theory. PHYSICAL REVIEW LETTERS 1986; 56:2148-2151. [PMID: 10032903 DOI: 10.1103/physrevlett.56.2148] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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193
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Myung YS, Cho BH, Kim Y, Park YJ. Entropy production of superstrings in the very early Universe. PHYSICAL REVIEW. D, PARTICLES AND FIELDS 1986; 33:2944-2947. [PMID: 9956500 DOI: 10.1103/physrevd.33.2944] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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194
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Kim KY, Kim Y, Koh IG, Myung YS, Park YJ. Stability analysis of M4 >= 2 >= 2 in the Einstein-Maxwell system. Int J Clin Exp Med 1986; 33:477-483. [PMID: 9956642 DOI: 10.1103/physrevd.33.477] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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195
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Koh EH, Park YJ, Lee HC, Hong CS, Huh KB, Lee SY, Ryu KZ. The clinical and thyroid function studies of lymphocytic thyroiditis with spontaneously resolving hyperthyroidism: comparison to subacute thyroiditis. Korean J Intern Med 1986; 1:48-53. [PMID: 15759376 PMCID: PMC4534892 DOI: 10.3904/kjim.1986.1.1.48] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
Lymphocytic thyroiditis with spontaneously resolving hyperthyroidism (LT-SRH) has been reported in the past years, and is referred to as “silent thyroiditis.” It is characterized by a low or decreased radioactive iodine uptake (RAIU) of thyroid in a patient with hyperthyroidism in whom initial diagnosis is generally thought to be Graves’ disease. Thirty-five patients who had hyperthyroidism or goiter with decreased RAIU have been assessed. Twenty-four (68.6%) of 35 patients had LT-SRH and the remaining patients, subacute thyroiditis (SAT). The clinical characteristics of the patients with LT-SRH were a history of delivery, painless goiter, elevated T3 and T4 levels and positive anti-microsomal antibodies. Anti-microsomal antibodies were positive in 70.8% of the LT-SRH group, whereas 12.5% in the SAT group. Resolution of the hyperthyroidism took 8 to 12 months. It is considered that LT-SRH is an autoimmune thyroiditis with spontaneously resolving hyperthyroidism and determination of the RAIU is very useful in differentiating from other forms of hyperthyroidism.
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196
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Myung YS, Cho BH, Kim Y, Park YJ. Higher-dimensional Einstein-Maxwell theory with inflation. PHYSICAL REVIEW. D, PARTICLES AND FIELDS 1985; 32:1011-1013. [PMID: 9956235 DOI: 10.1103/physrevd.32.1011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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