• Advances in Traditional Medicine
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• 제1권1호
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• pp.82-88
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• 2000

We investigated the effect of aqueous extract of Cichorium intybus (CIAE) on mast cell-mediated immediate type allergic reactions. CIAE dose-dependently inhibited systemic anaphylactic reaction induced by compound 48/80 in mice. Especially, CIAE inhibited compound 48/80-induced anaphylactic reaction 100% with the dose of 1000 mg/kg. CIAE 1000 mg/kg also significantly inhibited local anaphylactic reaction activated by anti-dinitrophenyl (DNP) IgE. When mice were pretreated with CIAE at a concentration ranging from 0.1 to 1000 mg/kg, the plasma histamine levels were reduced in a dose-dependent manner. CIAE (1 to 1000 g/ml) dose-dependently inhibited histamine release from the rat peritoneal mast cells (RPMC) activated by compound 48/80 or anti-DNP IgE. These results indicate that CIAE inhibits mast cell-mediated immediate-type allergic reactions.

• Nuclear Engineering and Technology
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• 제51권6호
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• pp.1669-1680
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• 2019

Seismic safety is considered to be one of the key design objectives of AP1000 nuclear power plant (NPP) in strong earthquakes. Dynamic behavior, damage development and aggravation effect are studied in this study for the three main components of AP1000 NPP, namely reinforced concrete shield building (RCSB), steel vessel containment (SVC) and reinforced concrete auxiliary building (RCAB). Characteristics including nonlinear concrete tension and compressive constitutions with plastic damage are employed to establish the numerical model, which is further validated by existing studies. The author investigates three earthquakes and eight input levels with the maximum magnitude of 2.4 g and the results show that the concrete material of both RCSB and RCAB have suffered serious damage in intense earthquakes. Considering RCAB in the whole NPP, significant damage aggravation effect can be detected, which is mainly concentrated at the upper intersection between RCSB and RCAB. SVC and reinforcing bar demonstrate excellent seismic performance with no obvious damage.

• 공업화학
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• 제35권2호
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• pp.148-153
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• 2024

In this study, a methodology for evaluating impact strength in rollable devices was developed, focusing on measuring impact strength and evaluating rolling and unrolling durability simultaneously, with findings reported from tests on a real demonstration unit. The study utilized a flexible and rollable polyimide (PI) substrate for the evaluations. The chosen parameters for this methodology were a flat-type impactor, weights of 300 g, 500 g, and 1000 g, a rolling shaft ranging from 30 R to 5 R, and the positioning of the impactor. The results revealed that the difference in defect rates when comparing the 300 g and 500 g weights was minimal. However, the adoption of a 1000 g weight markedly increased the defect count due to damage to the PI film's surface. Furthermore, an uptick in rolling and unrolling cycles led to more pronounced surface scratches on the PI film. These methods and findings are poised to make a substantial contribution towards refining reliability testing for a wide array of rollable device applications, including smartphones, watches, pads, and wearable technology.

• 한국식품과학회지
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• 제48권1호
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• pp.36-41
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• 2016

비가열 살균 기술 중 하나인 광펄스 기술을 이용하여 신선편이 식품 중 하나인 새싹채소에 존재하는 미생물의 저감 효과를 검토하였다. 새싹 채소에 존재하는 미생물의 오염도는 총균수 $1.2{\times}10^7CFU/g$, 대장균군 $3.3{\times}10^6CFU/g$, E. coli O157:H7, Staphylococcus aureus, Salmonella 및 Listeria는 각각 $2.1{\times}10^5CFU/g$, $4.9{\times}10^5CFU/g$, $1.7{\times}10^5CFU/g$, $4.3{\times}10^4CFU/g$이었다. 펄스 수 5 pps, 광원과 시료 사이의 거리 6.7 cm의 동일한 조건에서 빛의 세기를 달리하여 처리하였을 경우 빛의 세기가 강할수록 사멸율은 증가하였으며, 빛의 세기 1000 V에서 일반세균은 1.0 log CFU/g, 대장균군은 1.6 log CFU/g, 병원성 대장균은 1.8 log CFU/g의 사멸율을 보였다. 광원과 시료 사이의 거리에 따른 사멸효과는 거리가 짧을수록 사멸율은 증가하여, 광원과 시료 사이의 거리 6.7 cm, 빛의 세기 1000 V, 펄스 수 5 pps에서 일반세균 0.9 log CFU/g, 대장균군 0.8 log CFU/g, 병원성대장균 1.9 log CFU/g의 사멸율을 나타내었다. 광펄스 처리 전후 새싹채소의 수분함량과 비타민 C의 함량변화는 처리 후의 시료가 감소하는 경향을 보였으나 유의적인 차이를 나타내지는 않았다. 새싹채소의 살균에 있어 광펄스 기술은 처리 조건에 따라 90-99%의 사멸율을 나타내어 신선편이 식품의 비가열 살균 기술로서의 적용 가능성을 보였다.

• Archives of Plastic Surgery
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• 제36권6호
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• pp.773-778
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• 2009

Purpose: The authors propose the new classification of fatty - type gynecomastia(lipomastia) which can serve as a guide for modifying the periareolar technique. Methods: A retrospective analysis was made of 1000 cases of lipomastia operated on in the last 17 months. The extent of the clinical result, the technique employed, and the complications were observed. On the basis of this review the authors observed that at grade I(fat component < 50 ml, fibroglandular component < 3 g each breast), flattening of the thorax can be achieved by means of stab incision, ultrasound - assisted lipectomy(UAL), scavenging suction - assisted lipectomy(SAL) and tissue shaving. At grade II(50 < < 150 ml, 3 < < 5 g), stab incision, UAL, SAL and pull - out method(POM) using small curved scissors. At grade III(150 < < 300 ml, 5 < < 15 g and prominent inframammary fold(IMF)), minimal incision (5 - 6 mm), UAL, SAL and POM using small angulated scissors, and blunting IMF. At grade IV (300 < < 500 ml, 15 < < 30 g, and glandular ptosis), minimal incision (5 - 6 mm), UAL, SAL, fibroglandular excision using small angulated scissors, cutting IMF and fixation of nipple - areola complex(NAC) becomes necessary. At grade V (> 500 ml, > 30 g and ptosis), small incision (7 - 8 mm), UAL, SAL, fibroglandular excision using large angulated scissors, cutting IMF, upper repositioning of NAC and delayed circumareolar skin reduction or chest lifting becomes necessary. Results: The complications were minimal but there were hematoma (n = 7), infection (n = 3) and hypertrophic scar (n =13). Almost patients were satisfied with the outcome. Conclusion: This simple classification may help in choosing the most suitable treatment, thus avoiding insufficient or invasive treatments and undesirable scars.

• Toxicological Research
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• 제18권4호
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• pp.397-400
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• 2002

This study was carried out to investigate the acute toxicity of G. bimaculatus in Sprague-Dawley rats. G. bimaculatus was administered orally at doses of 8, 40, 200, 1000 and 5000 mg/kg. in this study, number of deaths, clinical sign, body weights, and pathological examination were investigated for 14 days after administration of G. bimaculatus. The results indicate that G. bimaculatus did not show any toxic effect in rats and oral $LD_{50}$ value was over 5000 mg/kg in Sprague-Dawley rats.

• 한방안이비인후피부과학회지
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• 제18권1호
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• pp.183-198
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• 2005

This experimental study was performed to investigate the anti-inflammatory effects of Phellodendri Cortex(PC), Indigo Naturalis(IN). Alumen(AM), and Chinensis Galla(CG). These four prescriptions most frequently have been used in of oriental medicine for the external the theraphy of Gu-Chang. This study was done to evaluate the activity of superoxide dismutase(SOD) and the inhibitory effects of the formation of cyclooxygenase-2(COX-2), tumor necrosis $factor-{\alpha}(TNF-{\alpha}),\;interlenkin-1{\beta}(IL-1{\beta})$, prostaglandin-E2(PGE2) on the monocyte and neutrophil. The results were summerized as follows. 1. IN has no cytotoxicity but PC, AM, CG have a little cytotoxicity by the increase of concentrations. 2. PC, IN, AM and CG all inhibited the formation of COX-2 in the human neutrophil. 3. $1000{\mu}g/m{\ell}$ of PC increased the formation of SOD in the human monocyte. 4. $1000{\mu}g/m{\ell}$ of PC, $100{\mu}g/m{\ell}$ and $1000{\mu}g/m{\ell}$ of IN, $100{\mu}g/m{\ell}$ of CG inhibited the formation of $TNF-{\alpha}$ in the human monocyte. 5. $10{\mu}g/m{\ell}$ of PC, $1000{\mu}g/m{\ell}$ of IN inhibited the formation of $IL-1\;{\beta}$ in the human monocyte. 6. PC, IN, AM and CG all did not inhibit the production of PGE2 in the human monocyte In addition, the results show that PC, IN, AM and CG all have anti-inflammatory effects and can be used fer the external theraphy of Cu-Chang.

• 한국식품과학회지
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• 제28권3호
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• pp.417-420
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• 1996

쌀밥의 저장성을 향상시킬 목적으로 밥물에 녹차 물추출물을 첨가하여 취반하고 쌀밥의 품질특성 및 저장성을 측정하였다. 500, 1000ppm의 녹차 물추출물이 첨가된 쌀밥의 관능성은 전체적인 기호도, 맛 그리고 향기 항목에서 대조구보다 우수하였으나 조직감에서는 1%수준에서 유의적인 차이가 없었다. 색도는 녹차 물추출물 첨가로 인해 L값은 감소하였고 a, b값은 증가하였으며 대조구와 색도차이(${\Delta}E$)는 500, 1000 ppm에서 각각 15.08, 19.41로 매우 컸다. 쌀밥이 부패되었을때 pH는 5.8,적정산도는 0.3%그리고 총세균수는 $10^8\;cfu/g$ 수준이었다. $30^{\circ}C$에서 저장중 대조구에서는 3일만에 변질이 되었으나 녹차 물추출물 500, 1000 ppm첨 가구에서는 각각 4, 5일만에 변질이 되어 저장성이 $1{\sim}2$일 정도 연장되는 것으로 나타났다.

• 대한한의학회지
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• 제21권2호
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• pp.52-59
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• 2000

Objectives: The root and stem of Sinomenium acutum has been used for treatment of arthritis and neuralgia in oriental medicine. To find new substances of the anti-anaphylactic drugs, we studied Sinomenium acutum. Methods: To investigate the effect of this plant, the effect on anaphylactic reaction, plasma histamine level, and tumor necrosis $factor-{\alpha}-(TNF-{\alpha})$ production were measured after the aqueous extract of Sinomenium acutum stem (SSAE) was administrated to mice and rats. Results: The SSAE (0.1 to 1000 mg/kg) dose-dependently inhibited systemic anaphylactic reaction induced by compound 48/80 in mice. Especially, SSAE reduced compound 48/80-induced anaphylactic reaction with 50% at the dose of 1000 mg/kg. SSAE (100 to 1000 mg/kg) also significantly inhibited local anaphylactic reaction activated by anti-dinitrophenyl (DNP) IgE. When mice were pretreated with SSAE at a concentration ranging from 0.1 to 1000 mg/kg, the plasma histamine levels were reduced in a dose-dependent manner. SSAE (1 to 1000 g/ml) dose-dependently inhibited histamine release from the rat peritoneal mast cells (RPMCs) activated by compound 48/80 or anti-DNP IgE. The level of cAMP in RPMCs, when SSAE was added, increased compared with that of a normal control. In addition, SSAE (0.1 g/ml) had a significant inhibitory effect on anti-DNP IgE-induced $TNF-{\alpha}$ production. Conclusions: These results indicate that SSAE inhibits mast cell-mediated anaphylactic reactions and $TNF-{\alpha}$ production from mast cells.

• 한국식품영양과학회지
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• 제25권5호
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• pp.846-854
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• 1996

인슐린 비의존성 당뇨병 환자를 대상으로 식이섬유 섭취량을 증가시키기 위한 방법으로서 병원에서 처방된 식사에 더하여 일일 5g의 식이섬유를 포함하는 콩가루 비스켓(15명, 대조군), 20g을 포함하는 비지 비스켓(9명 , 불용성 고식이섬유군) 또는 25g을 포함하는 다시마 비스켓(10명, 수용성 고식이섬유군)을 2주 동안 첨가 섭취시킨 후 당질대사 개선효과를 평가하였다. 실험기간 중 당뇨병 환자들의 일일 열량 섭취량은 세군간에 유의한 차이가 없었고, 하루 실제로 섭취한 평균 총 식이섬유량은 대조군이 $19.1\pm4.3g(13.8\pm8.0g/1000kca1),$ 비지 비스켓군이 $32.5\pm4.1g(19.7\pm3.8g/1000kcal),$ 다시마 비스켓군이 $38.1\pm5.5g(24.5\pm4.5g/1000kcal)이었다.$ 비지 비스켓과 다시마 비스켓의 2주간 섭취 후 공복시 고혈당의 하강폭이 대조군에 비해 유의하게 컸으며 (p<0.05), 경구 포도당 부하 후의 내당능도 뚜렷하게 개선되었다(p<0.05). 경구 포도당 부하검사 및 글루카곤 자극검사를 통해 관찰한 바 혈청 인슐린과 C-peptide 수준 및 혈장 글루카곤의 농도는 2주간의 고식이섬유 첨가물의 섭취에 의해 변화를 보이지 않았다. 당화혈색소 수준은 2주간의 식이 섬유 첨가물 섭취 후에 다소 감소 경향을 보였으나 유의한 변화로는 판정되지 않았고 일일 요당의 배설량은 세군 모두에서 비스켓 섭취전에 비해 유의하게 감소되었다(p<0.05). 2주 동안의 식이섬유 첨가 섭취가 인슐린 비의존성 당뇨병 환자의 당질대사에 긍정적인 효과를 미치는 것으로 관찰되었으므로 비지와 다시마 첨가물이 당뇨병의 식사요법에서 유용한 고식이섬유 식품 첨가물로서의 가능성이 있는 것으로 판단된다.