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Absorbed Spectrum Comparison of Lead and Tungsten in Continuous X-ray Energy using Monte Carlo Simulation (몬테카를로 시뮬레이션을 통한 연속 엑스선 에너지에서 납(Pb)과 텅스텐(W)의 흡수 스펙트럼 비교 연구)

  • Kim, Kyotae;Kang, Sangsik;Noh, Sicheul;Jung, Bongjae;Cho, Changhoon;Heo, Yeji;Park, Jikoon
    • Journal of the Korean Society of Radiology
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    • v.6 no.6
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    • pp.483-487
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    • 2012
  • In 1895, the discovered X-ray is used for not only in this field of medicine wide but also field. The detection of radiation after, people realized the risk of the radiation exposured recommended the principle about the protection of radiation by the part of the effort for lowering the radiation exposure. In this recommendation, all unnecessary radiation exposure have to be prevented by All doses include the protection of radiation, general idea of applicable two kinds of that it has to low maintain. Presently, in the General X-ray room of the clinical, the lead (Pb) was used for the shielding, However, because it had the problem of the lead poisoning which is fatal in the human body, the alternatives was showed. and Among them, the material that it is the tungsten was presented. in this research, the absorbed spectrum according to the thickness in the continuous X-ray energy of the tungsten which is not harmful to the human body through the Monte Carlo simulation, tried to compare with the absorbed spectrum of the lead (Pb). The tungsten confirmed that simulation presumption than result lead in the whole domain that absorbed probability was higher and it is considered that tungsten shows the absorbed efficiency higher than the lead in particularly, 70 keV ~ 90 keV and the tungsten is more useful to the X-ray energy cover of the high energy diagnostic area.

Effect of Bakjakyak(Paeonia japonica) Addition on the Shelf-Life and Characteristics of Rice Cake and Noodle (백작약 첨가 떡과 국수의 저장성 및 제품특성)

  • Sung, Jung-Min;Han, Young-Sil
    • Journal of the Korean Society of Food Culture
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    • v.18 no.4
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    • pp.311-319
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    • 2003
  • This study was perfomed to evaluate the shelf-life, physicochemical, sensory evaluation of rice cake and noodle mixed with Bakjakyak(Paeonia japonica) powder at different ratio. Moisture content decreased gently during storage and the decrease was less in Bakjakyak powder-added groups than the control group. The color L value decreased significantly by with increasing the Bakjakyak powder and increased during storage. Color a and b value incresed significantly by addition of Bakjakyak powder. In the total plate count, Bakjakyak powder-added group showed less growth of microorganisms compared to the control group. As a result of the sensory evaluation, rice cake and noodle with Bakjakyak were superior in color, flavor, taste, cohesiveness and overall quality than that of control group. The 3%-added group was most superior in terms of color and the 1% added group gained the highest grade in terms of flavor, taste, overall quality. The results suggested that Bakjakyak was effective in increasing the shelf-life and retarding the staling of rice cake and noodle.

The Influence of Dado Education on the Personality Development of Female High School Students (다도교육이 여고생의 인성발달에 미치는 영향)

  • 조희선;이순실
    • Journal of Korean Home Economics Education Association
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    • v.16 no.1
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    • pp.1-17
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    • 2004
  • The purpose of this study was to find the contribution of Dado education to personality development among female high school students in Korea. The personality development was measured with the change in emotional stability. consideration. politeness. and temperance before and after a series of Dado education program to 16 female high school students for ten times (20 hours). A significant improvement in the students personality was found. Students perceived their positive internal and external changes through this program and their mothers were favorable to the personality development of their children after the Dado education. This study implies that Dado education can be a valuable means for personality development in youth. A suggestion was made for teachers and curriculum developers to apply Dado education into school curriculum and extracurricular activities.

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Quality characteristics of a dumpling shell with Curcuma longa L. powder added (울금 분말을 첨가한 만두피의 품질 특성)

  • Seo, Jae-Sil
    • Food Science and Preservation
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    • v.20 no.5
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    • pp.621-627
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    • 2013
  • This study was conducted to investigate the effect of Curcuma longa L. powder (CLP) on the quality characteristics of a dumpling shell. Dumpling shell samples were prepared with wheat flour and different amounts of CLP were added to them, after which their instrumental characteristics and sensory evaluation were investigated. The gelatinization temperature of the CLP-wheat flours composite increased, whereas its initial viscosity at $95^{\circ}C$, viscosity at $95^{\circ}C$ after 15 min and maximum viscosity all fell with the increasing CLP content, as measured via amylography. As increasing amounts of CLP were added, the L value decreased, whereas the a and b values increased. With regard to the textural characteristics, the CLP additive became harder, more cohesive and adhesive, and less springy. The DPPH free radical scavenging activity increased significantly as the CLP content increased (p<0.05). Overall, the dumpling shells with 3% CLP were preferred over the other samples, as tested via sensory evaluation.

Change in Periodontal Status by Professional Toothbrushing, and Patients' Satisfaction (전문가잇솔질에 의한 치주상태 변화와 환자만족도)

  • Kim, Chang-Hee;Kim, Jin;Kim, Chang-Woog
    • Journal of dental hygiene science
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    • v.8 no.4
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    • pp.261-266
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    • 2008
  • The purpose of this study was to examine the effects of the toothpick method, one of professional toothbrushing methods, on the prevention of periodontal diseases and the satisfaction level of patients with that. The subjects in this study were 33 patients who included 16 men and 17 women. After the toothpick method was applied to the selected patients from January 9 to February 28, 2008, the collected data were analyzed with SPSS (Statistical Package for the Social Science) 12.0 program. The findings of the study were as follows: First, the patients investigated showed a 0.71 reduction in PI than in the past. The index of bleeding upon probing stood at 5.12, which dropped from 8.09 in the beginning. Second, the patients gave a mean of 4.20 to the professional toothbrushing out of possible five points, which showed that they expressed satisfaction with that. Third, as for the relationship between general characteristics and satisfaction level, the women were more satisfied with that ($4.25{\pm}0.33$). By age group, those who were in their 60s and up found that more satisfactory ($4.31{\pm}0.30$). Fourth, as to changes in oral symptoms by gender, the largest number of the men and women considered their gums to become healthier after the professional toothbrushing was applied. The above-mentioned findings suggested that dental institutions should be equipped with well-educated oral health care personnels who are responsible for the periodontal health of patients, and the development of oral health promotion programs is urgently required as well.

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Prevalence Study of Mothers' Perception on Pregnancy, Childbirth, and Childcare: Comparison Between Years 2002 and 2007 (영아기 첫 자녀를 둔 어머니의 임신 및 출산, 양육 변인에 관한 연구: 2002년과 2007년 실태 비교를 중심으로)

  • Kim, Yang Eun;Cho, Bok Hee;Jung, Min Ja
    • Korean Journal of Childcare and Education
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    • v.3 no.2
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    • pp.68-85
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    • 2007
  • The purpose of this study is to investigate the changes of mothers' condition including the level of knowledge and parenting stress that mothers have on infant development. The subjects of this study are 270 mothers whose infants range in age from birth to 36 months. The instruments used are: 1)KCDI(Knowledge of Child Development Inventory, Larsen & Juhasz, 1985) 2)Parenting Stress Scale(Kim & Kang, 1997), and a demographic questionnaire. The data analyses use SPSS 12.0 which employs basic statistics, reliability test, and t-test. This study is time-lag design covering five years. Therefore, the data collected originates from 2002 and 2007 to constitute input from two times. The results of this study indicate that the average pregnancy from the 2007 statistics occurred 0.46 months earlier, after marriage, as compared to pregnancies in 2002. Mothers who gave birth by natural birth increased from 59.9 % to 75.3 % over the five year period. Regarding knowledge of infant development, the level of mothers' knowledge was lower in 2007 than in 2002 according to study results. The level of parenting stress of mothers increased for the 2007 statistics as compared to the 2002 survey.

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Factors Associated with Early Death in Patients with Community-Acquired Pneumonia (지역사회획득폐렴에서 조기 사망과 관련된 인자)

  • Park, Hun-Pyo;Seo, Yong-Woo;Lee, Jeong-Eun;Kim, Young-Ho;Jang, Young-Yun;Park, Soon-Hyo;Seo, Chang-Kyun;Jeon, Young-June;Lee, Mi-Young;Choi, Won-Il
    • Tuberculosis and Respiratory Diseases
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    • v.58 no.6
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    • pp.607-613
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    • 2005
  • Background : Early death is an important problem associated with the management of community-acquired pneumonia. However, there is little information on the risk factors associated with it. The aim of this study was to identify the factors associated with early death in community-acquired pneumonia patients. Methods : From January 1999 to July 2004, 1,487 adult patients with community-acquired pneumonia who were admitted to the pulmonary department via emergency center were examined. Early death was defined as those who died within 2 days of hospitalization. The clinical and laboratory aspects of the patients who died early (n = 30) were compared with those of an age and gender matched control population (n = 60). Results : In the early death group, respiratory rate, heart rate, and blood urea nitrogen (BUN) were significant higher (p < 0.05 for all), while the arterial pH, systolic pressure, and $PaO_2$ were significant lower (p < 0.05 for all) than the control. The independent factor significantly associated with early death was tachypnea (OR, 7.049). Conclusion : The importance of an early clinical assessment in emergency center with community-acquired pneumonia needs to be emphasized in order to recognize patients at risk of early death.

A Study on the Radiation Dose Managements in the Nuclear Medicine Department (핵의학과에서 방사선 피폭관리 실태에 대한 조사 연구)

  • Lim, Chang-Seon;Kim, Se-Heon
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.10 no.7
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    • pp.1760-1765
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    • 2009
  • After administration of a radiopharmaceutical, the patient remains radioactive for hours or even days, representing a source of potential radiation exposure. Thus, including the personnel who are occupationally exposed to ionizing radiation, radiation exposure must be managed for members of the public, in particular for people accompanying patients. In this study we investigated radiation exposure dose management in the nuclear medicine departments at seven general hospitals. Two of them had no radiation safety considerations for patient transporters, sanitation workers and the like. And they all were careless of radioprotection for people accompanying patients. The average dose rate to people accompanying patients from radioactive patients just before a bone scan was 25.60 ${\mu}$Sv h-1. This is higher than 20 ${\mu}$Sv $h^{-1}$which is the annual public dose limit for temporary use. Therefore radiation dose measurement and risk assessment of patient transporters, sanitation workers and the like should be performed. And the nuclear medicine technologist should provide advices on the radiation safety to patient transporters, sanitation workers, people accompanying patients and so on. To ensure the radiation safety for people accompanying patients, it is required to restrict the patient's access to his relatives, friends and other patients or isolate patients.

Complete Transsection of the Trachea by Blunt Trauma (둔상에 의한 기관 완전 절단 - 1예 보고 -)

  • Kim, Dae-Hwan;Yoo, Byung-Ha;Kim, Han-Yong;Hwang, Sang-Won
    • Journal of Chest Surgery
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    • v.40 no.1 s.270
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    • pp.79-82
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    • 2007
  • Tracheobronchial rupture due to blunt chest trauma is an uncommon injury although the incidence is increasing. Early diagnosis and primary repair of tracheobronchial rupture not only restore a normal lung function but also avoid the difficulties and complications associated with delayed diagnosis and repair We present one case of the tracheal transsection caused by traffic accident. Patient suffered from progressive dyspnea, subcutaneous emphysema on the neck and anterior chest wall and tension pneumothorax at both sides were noted. Although both closed thoracostomy were done, massive air leakage through the chest tube continued and subcutaneous emphysema spread to the anterior abdominal wall and scrotum and the degree of dyspnea aggravated. With the impression of tracheobronchial injury, we performed the emergency operation. Preoperative bronchoscopy at the operation room was proceeded, which revealed the trachea was near totally transsected in transverse direction. Operation was performed through collar incisiion on the anterior neck, and the trachea was anastomosed with 4-0 $Vicryl^{(R)}$ interruptedly. Postoperative course were uneventful and patient discharged without any complications.

A Retrospective Analysis of Use in Hospitalized Children with Upper Respiratory Tract Infection (상기도 감염으로 입원한 소아환자에서 항생제 사용에 대한 후향적 분석)

  • Jung, Minyoung;Park, Ji Hyun;Oh, Chi Eun
    • Pediatric Infection and Vaccine
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    • v.24 no.2
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    • pp.87-94
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    • 2017
  • Purpose: The inappropriate prescription of antibiotics in children with upper respiratory tract infection (URTI) is common. This study evaluated the factors that influence antibiotics use in hospitalized children with viral URTI confirmed by reverse transcriptase-polymerase chain reaction (RTPCR) assay. Methods: The medical records of admitted patients who performed RT-PCR assay for respiratory virus pathogens from January 2013 to November 2014 were examined. The demographic and clinical features were compared between patients who were administered antibiotics at admission and those who were not. We also investigated differences between children who continued antibiotics and those who stopped antibiotics after a viral pathogen was identified. Results: In the total 393 inpatients, the median age was 23 months (interquartile range, 13 to 41.3 months). Antimicrobial agents were prescribed in 79 patients (20.1%) at admission. Patients with acute otitis media (AOM) had higher rates of antibiotics prescription than those without AOM (48.1% vs. 2.2%, P<0.001), with an adjusted odds ratio of 91.1 (95% confidence interval, 30.5 to 271.7). Level of high-sensitivity C-reactive protein and the proportion of acute rhinosinusitis were also significantly associated with antibiotics use (P<0.001). Among the 44 patients with viruses identified using the RT-PCR method during hospitalization, antibiotic use was continued in 28 patients (63.6%). AOM was statistically associated with continued antibiotic use in the patients (P=0.002). Conclusions: Although the respiratory virus responsible for URTI etiology is identified, clinicians might not discontinue antibiotics if AOM is accompanying. Therefore, careful diagnosis and management of AOM could be a strategy to reduce unjustified antibiotic prescriptions for children with URTI.