• Journal of Korea Foundry Society
• /
• v.5 no.3
• /
• pp.5-12
• /
• 1985

Many researchers have studied the eutectic solidification of CV Graphite Cast Iron qualitatively. However quantative studies have not been done. The type of eutectic solidification of CV Graphite Cast Iron treated with CG Alloy (Fe-Si-Mg-5Ti-Ca-Ce) was studied quantitatively through M.D.E. value (Mushy Degree of Eutectic Solidification) = $t_2/t_1)$, where $t_1$ is the difference of the eutectic solidification starting time between surface and center part of the casting sample, and $t_2$ is the time of eutectic solidification of the center part. Following results were obtained. (1) The M.D.E. value of CV graphite cast iron lies between that of spheroidal graphite and that of flake graphite cast iron but is closer to that of Flake graphite cast iron. (2) The M.D.E. value of CV graphite cast iron depends upon CV ratio. (3) The time required for eutectic solidification increases as graphite form is changed from Flake, CV. to spheroidal graphite. (4) The M.D.E. value increases as cooling rate increases.

• Development and Reproduction
• /
• v.20 no.1
• /
• pp.41-49
• /
• 2016

Moxibustion, which has a more than 4,000-year long history of use in East Asia, has been widely used for gynecological diseases. To investigate the effects of perineum (CV1) moxibustion on gynecological function, infertile women of childbearing age applied CV1 moxibustion for 30 days on a fixed schedule. The subjects had on average $2.4{\pm}1.1$ cases of infertility-related disabilities. After CV1 moxibustion treatment, on average, the subjects showed improvements in $1.5{\pm}1.0$ cases of their gynecological problems. In addition, 14.7% of the subjects got pregnant within $29{\pm}1.4$ days after the treatment. This result shows that application of moxibustion on the CV1 and uterus is an effective treatment for gynecological diseases and that it can improve the function of gynecologic organs.

• Journal of Korean Medical Ki-Gong Academy
• /
• v.14 no.1
• /
• pp.52-62
• /
• 2014

Objective : The aim of this study is to analyze the effectiveness of Korean Medicine treatment on post-hysterectomy syndrome patients by thermographic change during treatment. Methods : 5 female patients who had a hysterectomy within a year were treated with Korean Medicine concluding acupuncture, herbal medicine, cupping therapy, herbal bath. We evaluated the thermographic differences by checking Digital Infrared Thermal Imaging(D.I.T.I.) at CV17(膻中), CV4(關元), ST3(巨髎), BL15(心兪), and BL23(腎兪). Results : In consequence of Korean Medicine Treatment for 3 weeks, thermographic differences between CV17(膻中) and CV4(關元), ST3(巨髎) and CV4(關元), BL15(心兪), and BL23(腎兪) tended to decrease. Conclusion : After Korean Medicine treatment, thermographic differences between upper body and lower body tended to decrease cause shangrexiahanzheng(上熱下寒證) made by hysterectomy became moderated.

• Journal of Plant Biotechnology
• /
• v.31 no.2
• /
• pp.95-101
• /
• 2004

This study was undertaken to study the effect of interspecific pollination of L. longiflorum and L. ${\times}$formolongi as the female parent with Oriental, Martagon and Trumpet group as the male parent by cut-style pollination. In the interspecific pollination of L. longiflorum cv. Gelria and Lorina with Oriental group as the male parent, the corresponding fruits obtained immature embryo were 1, 8, and the mean number of embryo per fruit were 11.0, 3.0, respectively. In the interspecific pollination of L. ${\times}$formolongi cv. Raizan, the corresponding fruits obtained immature embryo were 17, and the mean number of embryo per fruit were 4.0. On the other hand, in the interspecific pollination between L. longiflorum and L. ${\times}$formolongi as the female parent and Martagon and Trumpet group as the male parent, the pollination of L. ${\times}$formolongi as the female parent and L. henryi of Trumpet group as the male parent were obtained only 2 fruits, however no embryo.

• Research in Plant Disease
• /
• v.28 no.1
• /
• pp.39-45
• /
• 2022

Patterns of occurrence of tomato yellow leaf curl virus (TYLCV) and tomato chlorosis virus (ToCV) with whitefly on summer-cultivated tomato in Gwangju-si, Gyeonggi Province were surveyed using multiplex reverse transcription-polymerase chain reaction in 2020. In addition, distribution of the whiteflies species and their viral transmission rates were investigated throughout the tomato growing season. The infection rates of TYLCV and ToCV increased sharply during harvest, and the single infection rates were 30.9% and 5.0%, respectively, with a mixed infection rate of the two viruses being the highest at 52.2%. Single infection with TYLCV and double infections with TYLCV and ToCV accounted for the majority with 83.1%. Bemisia tabaci were dominant over Trialeurodes vaporariorum in greenhouse grown plants, and all of the investigated B. tabaci biotypes were identified as Mediterranean (MED, formerly known as Q biotype). The transmission rate of TYLCV, detected in every sampled B. tabaci MED population, was 21.4%, and the mixed transmission rate with ToCV was 35.5%. Viruliferous MED whiteflies with ToCV showed a higher rate than that of T. vaporariorum. In the transplant stage, viruliferous rate of both TYLCV and ToCV of B. tabaci was 42.7%; this rate was highest in the harvest stage. In examination of tomato yield, the increase in the mixed infection rate of TYLCV and ToCV led to complete yield loss. When the mixed infection rate increased by 10%, the yield decreased by 405.4 kg/10a.

• Analytical Science and Technology
• /
• v.24 no.4
• /
• pp.237-242
• /
• 2011

In this study, an analytical method was developed for residual metamizol in beef and pork using LC/MS/MS. 4-methylaminoantipyrin (MAA), the main metabolite of metamizol was targeted for analysis instead of its parent compound. MAA was simply extracted from meat by acetonitrile, purified and then analyzed by multiple reaction monitoring method (MRM). Standard addition method was used for calibration. The calibration curves showed the linearity of $r^2$ > 0.99 for both matrices included. The developed method was validated by six-time intra-lab tests and inter-lab tests with two other institutes. The validation of the whole procedure for beef showed the intra-lab accuracies of 78-102% (CV 5.5-9.1%) and the inter-lab accuracy of 98% (CV 14%); the intra-lab accuracies of 95-99% (CV 3.9-5.6%) and the inter-lab accuracy of 111% (CV 13%).

• Journal of the Korea Institute of Building Construction
• /
• v.24 no.1
• /
• pp.133-144
• /
• 2024

The OpenCV-based length measurement algorithm is anticipated to be effective for length measurement inspection tasks, providing objective inspection outcomes. Nonetheless, there is a notable gap in research regarding the influence of various checkerboard types and capturing conditions on the algorithm's accuracy in real-world construction settings. Consequently, this study proposes a methodology employing an OpenCV-based length measurement algorithm and checkerboard for digital construction inspection tasks. The findings suggest that using a checkerboard with square sizes of A4 or larger, and 50mm or larger, is optimal for capturing distances and angles within 4m and 90°, respectively, when deploying the algorithm. These insights are anticipated to provide practical guidelines for professionals conducting digital-based length measurement inspections.

• Child Health Nursing Research
• /
• v.4 no.2
• /
• pp.245-254
• /
• 1998

Prematurity is the main cause for respiratory disorders in neonates. The goal in respiratory management is to maintain respiration with adequate oxygenation. Chest vibration(CV) prior to on dotracheal suctioning(ETS) has been arbitrarily applied to ventilated premature infants without the scientific evaluation of its safety and efficacy. A repeated measure within subjects experimental study was conducted to investigate the effects of CV prior to 875 on oxygenation and lung secretions in twenty-one ventilated premature infants. The independent variable was the type of research protocol, the control type (275 without C.V) and t he intervention(ETS with CV). The dependent variables were oxygen saturation(SpO₂), heart rate (HR), measured by pulse oximeter, and the amount of lung secretions measured in gram. The results showed there was no difference in SpO₂ responses regardless CV employed before ETS. But there was a significant difference in HR responses between the control and the intervention, even without clinical significance. There was a significant difference in the amount of lung secretions retrieved during ETS with CV, compared to ETS without CV. This study suggested the safety of CV by demonstrating no clinically significant changes in SpO₂ and HR in premature infants. The efficacy of CV could be supported by the increases in the amount of sputum during ETS with CV compared to ETS without CV in premature infants.

• Journal of Korean Medical classics
• /
• v.28 no.4
• /
• pp.121-137
• /
• 2015

Objectives : To investigate the progress, characteristics, and reasons of CV12 moxibustion that King Sukjong of Joseon Dynasty had experienced 31 years since 1684. Methods : This study mainly extracted the records and related records about CV12 moxibustion of King Sukjong and relevant records from Seungjeongwon Ilgi, and analyzed them. Aside from that, medical books wrote at that time and relevant records were additionally investigated. Results : King Sukjong cauterized CV12 or other CV12 related acupoints with moxa 21 years out of his 31 years from 1684 to 1714. The cautery period was usually between late January and mid February. He had 100 pieces of moxa for cautery. On the last day of his moxibustion, he cauterized ST36 with moxa. The moxibustion process consisted of the following steps: suggestion or requirement of moxibustion, decision of date and time, and moxa cautery. In 1684, the reason why King Sukjong cauterized CV12 with moxa was to treat his joint pain and nauseous symptoms. The effect can be found in Donguibogam, many other Korean medical books, and other general books at that time. In 1685, he began to cauterize CV12 with moxa to prevent diseases. Since then, most moxa cautery on CV12 had been performed in the same context. Conclusions : For 21 years, King Sukjong repeatedly cauterized CV12 with moxa. The moxa therapy was conducted to prevent diseases mostly. And King Sukjong had a lot of interest in the therapy. For the reasons, the therapy had repeatedly been performed so long.

• Korean Journal of Acupuncture
• /
• v.35 no.2
• /
• pp.105-115
• /
• 2018

Objectives : This research aimed to verify the validities of contraindicated acupoints in acupuncture treatment in Zhenjiudacheng. Methods : We investigated contraindicated acupoints when performing needling in Zhenjiudacheng, then verified them in today's medical knowledge and clinical studies. Results : In Zhenjiudacheng, 39 acupoints - LU2, LI4, LI13, LI14, LI16, ST1, ST9, ST12, ST17, ST25, ST30, ST42, SP6, SP11, SI18, BL8, BL9, BL56, KI11, TE7, TE8, TE19, TE20, GB3, GB18, GB21, GV10, GV11, GV17, GV22, GV24, CV1, CV4, CV5, CV8, CV9, CV15, CV17 and EX-HN11 - were described to need a careful approach in acupuncture treatment and 21 acupoints among them had contraindications. Most of the contraindications can be explained based on anatomical knowledge and results of clinical studies, and acupuncture treatment at the 39 contraindicated acupoints can induce injury of tissues or organs near the acupoints. Conclusions : The contraindicated acupoints in acupuncture treatment in Zhenjiudacheng seem to have been classified based on the adverse events experienced by doctors at that time. Therefore careful acupuncture treatment at these acupoints is needed to avoid injury to tissue or organs.