• Journal of Astronomy and Space Sciences
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• v.30 no.2
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• pp.101-106
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• 2013

The length of solar cycle 23 has been prolonged up to about 13 years. Many studies have speculated that the solar cycle 23/24 minimum will indicate the onset of a grand minimum of solar activity, such as the Maunder Minimum. We check the trends of solar (sunspot number, solar magnetic fields, total solar irradiance, solar radio flux, and frequency of solar X-ray flare), interplanetary (interplanetary magnetic field, solar wind and galactic cosmic ray intensity), and geomagnetic (Ap index) parameters (SIG parameters) during solar cycles 21-24. Most SIG parameters during the period of the solar cycle 23/24 minimum have remarkably low values. Since the 1970s, the space environment has been monitored by ground observatories and satellites. Such prevalently low values of SIG parameters have never been seen. We suggest that these unprecedented conditions of SIG parameters originate from the weakened solar magnetic fields. Meanwhile, the deep 23/24 solar cycle minimum might be the portent of a grand minimum in which the global mean temperature of the lower atmosphere is as low as in the period of Dalton or Maunder minimum.

• Atmosphere
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• v.20 no.3
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• pp.333-341
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• 2010

The stratiform rain fraction is investigated in the tropical boreal winter Madden-Julian oscillation (MJO) and summer intraseasonal oscillation (ISO) using Tropical Rainfall Measuring Mission (TRMM) Precipitation Rader data for the 11-yr period from 1998 to 2008. Composite analysis shows that the MJO/ISO produces larger stratiform rain rate than convective rain rate for nearly all phases following the propagating MJO/ISO deep clouds, with the greatest stratiform rainfall amount when the MJO/ISO center is located over the central-eastern Indian Ocean and the western Pacific. The fraction of the intraseasonally filtered stratiform rainfall compared to total rainfall (i.e., convective plus stratiform rainfall) amounts to 53~56%, which is 13~16% larger than the stratiform rain fraction estimated for the same data on seasonal-to-annual time scales by Schumacher and Houze. This indicates that the MJO/ISO exhibits the organized rainfall process which is characterized by the shallow convection/heating at the incipient phase and the subsequent flare-up of strong deep convection, followed by the development of stratiform clouds at the upper troposphere.

• Laser Solutions
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• v.8 no.1
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• pp.27-37
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• 2005

During laser spot welding of the braun tube electron gun, phenomena such as serious spattering and oxidative reaction, etc. were occurred. The spatter occurred from weld pool affects the braun tube, namely it blocks up a very small hole on the shadow mask and causes short circuit between two poles of the electron gun. We guessed that high power density and oxidative reaction are main sources of these problems. So, we studied to prevent and to reduce spatter occurring in spot welding of the braun tube electron gun using pulsed Nd:YAG laser. The characteristics of laser output power was estimated, and the loss of laser energy by optical parameter and spatter was measured by powermeter. The effects of welding parameters, laser defocused distance and incident angle, were investigated on the shape and penetration depth of the laser welded bead in flare and flange joints. From these results, the laser peak power was a major factor to control penetration depth and to occur spatter. It was found that the losses of laser energy by optic parameter and sticked spatter affect seriously laser weldability of thin sheets.

• Clinical and Molecular Hepatology
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• v.24 no.4
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• pp.374-383
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• 2018

Background/Aims: There have been numerous efforts to reduce mother-to-child transmission (MTCT) of hepatitis B virus (HBV) with antiviral agents during pregnancy. However, there are limited data regarding the outcomes of pregnant women after delivery. This study was performed to evaluate the efficacy of antiviral agents in preventing MTCT of HBV and maternal long-term outcomes. Methods: The HBV-infected pregnant women treated with antiviral agents to prevent MTCT were retrospectively reviewed. Forty-one pregnant women who received telbivudine or tenofovir during late pregnancy (28-34 week) were analyzed. Hepatitis B virus surface antibody (HBsAb) positivity was tested in 43 infants after 7 months of birth. Eleven mothers were followed >1 year after delivery. Results: The mean HBV DNA titer before antiviral therapy was 8.67 (6.60-9.49) log copies/mL, and the median age at delivery was 32 years (range, 22-40). Eleven patients were treated with tenofovir and 30 with telbivudine. The median duration was 57 days (range, 23-100), and the median HBV DNA titer at birth was 5.06 log copies/mL (range, 2.06-6.50). Antiviral treatments were associated with significant HBV DNA reduction (P<0.001). Among 43 infants (two cases of twins), HBsAb was not detected in two, subsequently confirmed to have HBV infection. Biochemical flare was observed in two of 11 mothers followed >12 months, and an antiviral agent was administered. Conclusions: Antiviral treatment during late pregnancy effectively reduced MTCT. Long-term follow-up should be required in such cases. In addition, given that maternal biochemical flare occurred in 18% of mothers, re-administration of antiviral agents might be required.

• Journal of Physiology & Pathology in Korean Medicine
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• v.22 no.5
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• pp.1071-1077
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• 2008

Hwa-byung is a form of psychogenic illness among people in Korea and is listed as a culture-bound syndrome of Korea in the DSM-IV. Despite increased clinical researches for Hwa-byung in the oriental medicine of Korea, there has been no agreement of pattern identification for Hwa-byung. The purpose of this study is to develop a standard instrument of pattern identification for Hwa-byung which will be applied to clinical research. The items and structure of the instrument were based on review of published literature. The advisor committee on this study was organized by 15 neuropsychiatry professors of 11 oriental medical colleges nationwide. The experts attended 2 consultation meetings and discussed developing the instrument. and we also took professional advices by e-mail. The results were as follows; First, we divided the symptoms and signs of Hwa-byung into five pattern identification - stagnation of liver Qi, flare-up of the liver fire, disharmony between heart and kidney, deficiency of both Qi and blood, malfunction of gallbladder due to phlegm stagnation. Second, we got the mean weights to each symptom of five pattern identification which had been scored on a 5-point scale - ranging from 0 to 4 by the 15 experts. Third, we made out the Korean instrument of the pattern identification for Hwa-byung. It was composed of 34 questions and decided on question-and-answer form. Though there are some limits in this study, the instrument of pattern identification for Hwa-byung is meaningful and expected to be applied to the subsequent research. And also, we hope to improve the instrument and make up for this study through various research and discussion.

• Journal of the Korean Home Economics Association
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• v.24 no.1
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• pp.28-41
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• 1986

In the history of costume, coat can be traced up to ancient Persia but it was generalized as today's style around 14th an d15th century in Euro[pe. World wars, revolutions and rapid social changes of the last 80 years have produced more changes in the way people dress than any comparable period in history. Thewse changes enabled emergence of more modernized woman's garments and through it, dress and coat ensemble became public's main fashion. In 1920's after world war I, boyish style in woman's garment was in vogue. Woman's coat was also in the same style with length sortened up to the knee level and silhoutte was straighter and semi-fitted than previous period. Length of the coat was longer in late 1930's but shortened again in 1940's. And the most popular silhouette of both 30's and 40's was shape of the hourglass which was commonly called the "X-shape". Also double=breasted coat with fitted waistline, belt and flare skirt was in vogue. In 1950's and 60's, with the variety of lines in woman's garments, silhouette of the coat also appeared in many different forms. Along with the various shapes, color of the coat changed throughout the decades : dark colors in 20's, bright colors in 30's, mixed colors of 20's and 30's in 40's and in 50's, color had changed to archromatic. In fabric, wool was most popular in all periods. However, such gabrics as tweed, cotton, gaberdine, linen were added to give variety. It is very interesting to see collars trimmed with expensive furs were very popular in 20's and 30's but it almost disappeared in 40's and fur trimming reappeared in late 50's. In addtion to silhouette changes in design, details such as buttons, epaulettes, pockets and fur trimming of hemline were emphasizing points of varieties in design. This study has set time limits world war I which was the period coat became major fashion of woman's clothing, to 1960's.

• Journal of Veterinary Science
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• v.24 no.1
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• pp.16.1-16.11
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• 2023

Background: Long-term comparative data of phacoemulsification combined with endoscopic cyclophotocoagulation (phaco-ECP) versus phacoemulsification (phaco) alone in dogs are rare. Objectives: To investigate the effects of ECP on postoperative intraocular pressure (IOP) and complications after phaco in dogs with normal IOP. Methods: Medical records of IOP, conjunctival hyperemia, corneal edema, aqueous flare, posterior synechia, intraocular fibrin, and posterior capsule opacification (PCO) formation in 15 canine eyes that underwent phaco-ECP and 36 eyes that underwent phaco alone were evaluated retrospectively. ECP was applied when either the iridocorneal angle or the ciliary cleft was narrow or closed. Results: The IOP of the phaco-ECP group persisted within the normal range postoperatively. The phaco-ECP group had a shorter period of dorzolamide use than did the phaco group. PCO was formed earlier in the phaco-ECP group than in the phaco group. The phaco-ECP group showed more severe corneal edema than the phaco group at every follow-up visit. Posterior synechia was more severe in the phaco-ECP group than in the phaco group from two weeks until the last follow-up. Conclusions: Although ECP might cause more postoperative complications such as corneal edema and posterior synechia, it could effectively reduce the incidence of IOP increase after phaco in dogs with a high risk of postoperative glaucoma.

• The Journal of the Korean life insurance medical association
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• v.2 no.1
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• pp.34-36
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• 1985

Korea is an endemic area of chronic hepatitis in the world. Liver cirrhosis and liver cell carcinoma, presumed to be related to such chronic hepatitis, are the major causes of death in this country. The purpose of this study is disclosing the sources of chronic hepatitis in Korea establishing its histologic characteristics, disclosing the patterns of progression in chronic hepatitis, delineating its prognosis and finally speculating its etiology. The study group was composed of 183 patients with biopsy-proven acute icteric viral hepaticis, 32 patients with biopsy- proven anicteric hepatitis and 260 patients with biopsy- proven chronic hepatitis. These patients submitted to long-term follow-up by means of liver needle biopsy and/or clinicolaboratory evaluation. The period of follow-up ranged from two months to 18 years. The histological features of the initial biopsy specimens of chronic hepatitis permitted a division of the cases cases into the following five types: Type I. Persisting portal hepatitis : so called persisting hepatitis 43 Type II. Chronic inactive hepatitis with incomplete strand septal fibrosis. This type has thin fibrotic septation in addition to Type I with portal sclerosis 38 Type III. Chronic active periportal hepatitis(CAPH) : so called aggressive hepatitis, characterized by marked piecemeal necrosis. This type has been subdivided further into three groups: AB and C on the basis of histologic features. A CAPH without cirrhosis 15 B CAPH with cirrhosis 99 C CAPH with diffuse acinus type parenchymal nodules; characterized by rosette-forming micronodules 21 Type IV. Subacute hepatic necrosis; characterized by multilobular and/or bridging necrosis. 14 Type V. Persisting lobular hepatitis; characterized by spotty necrosis, which looks very similar to acute viral hepatitis. Such histologic changes should be persisted for more than six months 30 In Korea the main source of chronic hepatitis is the anicteric type. Of the chronic hepatitis observed in the hospital, Type IIIb was the most frequent in its incidence and occasionally exhibited development of hepatocellular carcinoma, but the mortality was highest in Type IIIc during the period of follow-up. Histologic characteristics of these five types suggest a spectrum of chronic hepatitis in Korea from an early and mild stage to advanced and fatal cirrhosis, which is occasionally associated with primary hepatic cell carcinoma. It seems that Type IV can be followed by flare-up of various stages of acute and chronic hepatitis with HBsAg and that many cases of liver cirrhosis prevalent in Korea occur through such an active process of Type IV. The etiology is not established, but in Korea it is mainly related to HBsAg.

• The Journal of the Korea Contents Association
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• v.20 no.11
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• pp.342-353
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• 2020

This study aimed to identify the experience of daily self-management (SM) and coping with acute exacerbation (AE) in COPD patients. A interview was conducted with 32 COPD patients, and data were analyzed according to the content analysis method. As a result of this study, the experience of daily SM was 'Implementing activities preventing from disease', 'Performing endurable exercise', 'Compliance with the medication regimens', 'Enforcing the dietary management', and 'Taking a rest.' Five major themes were drawn. And, for the experience of coping with AE, four major themes were derived: 'Using medical services', 'Getting enough rest', 'Taking prescription drugs', and 'Taking breathing technique.' COPD patients need continous education to detect earily specific symptoms and to cope with worsening symptoms.

• Journal of Society of Preventive Korean Medicine
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• v.17 no.2
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• pp.105-127
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• 2013

Objectives : We examined the use of the moxibustion through survey on Korean Medicine Doctors (KMDs) on preparation of universal moxa product standard by fully reflecting opinions of practitioners and the industry. Methods : The questionnaire is composed of 25 questions including use of indirect moxa, side effects, complaints and improvements, general characteristics and so on, and were responded by 1,588 KMDs. For statistics, frequency analysis, chi-square analysis, T-test and ANOVA were conducted using SPSS 12.0 for windows, and the significance level was 0.05. Results : In this research, 91% of the responded KMDs was using moxibustion, and the proportion of using mediate moxibustion was shown as 63.2%. They used mediate moxibustion for side effects of direct moxa method such as risk of burn, ease of use, control of stimulation and so on. And it was mostly being conducted to women and 40 ages. Most respondents gave moxibustion treatments for the purpose of thermal stimulation on acupoint to musculoskeletal diseases. Most respondents were treating 1~2 pieces of moxibustion to patients by moxibustion points to those of 1~2 regions every time within 10 minutes. Regarding the frequency of side effects of mediate moxibustion, within 3% of respondents had experienced side effects, and the types were burn, flare and itchiness, odor and smoke. The dissatisfaction of mediate moxibustion products was moderate(2.00 out of 5 point scale), and went up public health doctors, the younger ages and the shorter clinical experience. Complaints on mediate moxibustion products were serious odor, poor attachment, risk of burn etc. Regarding ways to improve mediate moxibustion, the expansion of moxibustion's insurance cost carne out highest, followed by preparation of manual on efficacy, strengthening of training, acquiring evidence on efficacy, diversification of specifications, safety improvement, quality improvement of mediate moxibustion products. Conclusions: Many KMDs use for ease of use and give moxibustion treatments for thermal stimulation but they complain about safety, efficacy and quality of mediate moxibustion. After this it is considered that we have to elevate therapeutic effect through the improvement of mediate moxibustion products.