• 제목/요약/키워드: 2T

검색결과 51,311건 처리시간 0.078초

3차원 스캐너를 이용한 상악 제1유구치 치관의 크기와 형태에 관한 연구 (A MORPHOMETRIC STUDY OF THE MAXILLARY PRIMARY FIRST MOLARS USING THREE-DIMENSIONAL SCANNER)

  • 이종범;김종철;한세현;이상훈
    • 대한소아치과학회지
    • /
    • 제33권4호
    • /
    • pp.643-652
    • /
    • 2006
  • 본 연구의 목적은 상악 제1유구치 치관의 크기와 형태적 특성을 3차원 스캐너를 미용하여 계측하고 국정 금속관과의 크기와 형태학적인 차이를 비교하는 것이다. 3차원 레이저 스캐너(Breuckmann opto Tep-HE100, INUS. Korea)로 스캔한 132aud 어린이들의 상악 제1유구치 경석고 모형을 Rapidform 2004 프로그램(INUS, Korea)을 이용하여 각 치아의 근원심경과 협설경, 교합면-치경부간 거리, 근원심경에 대한 협설경의 비율을 계측하고 평균치를 얻었으며, 남녀 상악 제1유구치의 평균적인 크기와 형태를 얻고 기성 금속관과 비교하여 다음과 같은 결과를 얻었다. 1. 상악 제1유구치 디관의 좌우측 크기에 있어서 유의한 차이를 보이지 않았다(p<0.05). 2. 상악 제1유구치 치관의 남녀간 크기에 있어서 남자의 치관 크기가 유의하게 더 큰 값을 보였고(p<0.05), 치관의 형태에 유의한 치이는 보이지 않았다(p>0.05). 3. 3차원 이미지로 상악 제1유구치를 재구성하여 나타낸 평균적인 남녀 상악 제1유구치의 크기는 3M의 기성 금속관과 비교 시, 남자는 기성 금속관의 4, 5번 사이, 여자는 기성 금속관의 4번과 유사하였고, 일성의 기성 금속관과 비교 시 기성 금속관의 근원심경이 커서 협설경을 기준으로 남자는 5번, 여자는 4번과 유사한 크기를 보였다. 4. 3M의 기성 금속관에 비해 재구성한 평균치의 치관 형태가 근심 설측 우각 부위, 원심 설측 우각 부위에서 더 풍융하였고, 협측 치은 융기의 치경부 1/3부위가 더 풍융한 양상을 보였으며, 남자의 치관보다 더 풍융한 양상을 보였다. 일성의 기성 금속관은 평균치의 치관 형태보다 정사각형의 형태를 나타냈고, 근원심경이 더 긴 양상을 나타냈다.하악 유견치의 치근 흡수의 완료는 하악 제 1 유구치 보다 빨랐으며, 하악 유견치에서 치근 흡수에 소요된 총 기간은 가장 짧았다. 5. 치근 흡수의 속도는 흡수 말기가 초기에 비해 빠른 경향을 나타냈다. 정확한 유치 치근의 흡수시기에 대해 알기 위해서는 정기적이면서 종적인 연구가 필요하리라 생각한다.ture model index(SMI), degree of anisotropy (DA)는 두 군 사이에 유의한 차이를 보이지 않았다(p>0.05). 4. 조직 절편을 관찰한 결과, 부드러운 사료를 먹인 실험군에서 하악 과두의 연골층의 증식 층과 전체 두께가 상당히 감소하였다.항성에 있어 유의한 차이를 보이지 않았다. 8379, 근심면 평균 0.8223, 설면 평균 0.7766, 원심면 평균 0.6781 순으로 나타났다. 4. 치아 우식증 진단율을 비교한 결과 교합면, 협면, 설면에서는 $DIFOTI^{TM}$ 이미지 판독이 가장 우수한 것으로 나타났으며(p<0.05), 근심면과 원심면에서는 방사선 판독이 가장 우수한 것으로 나타났다(p<0.05).는 P=0.009로 나타났다. 임상생징후 변화는 유의성이 없었다. 4. 종양환자의 검사치간의 시기별에 따른 상관관계를 조사한 결과 유의확률이 0.05 이하인 수치들은 Hb과 Albumin, K, Na간, Neutrophil과 Leukocyte간이었고 상관계 수치는 $0.370{\sim}0.442$ 사이로 나타났다. 유의확률 0.01이하로 조사된 수치는 Cholesterol과 ALT간, LDH와 Platelet, Creatinine간, Platelet와 BUN간, Na와 K수치간 이었으며 상관계수는 $0.531{\sim}0.866$사이로 나타났다.

  • PDF

국내산 복숭아 유과의 품종별 성분 분석 및 품질특성 (Composition and Physicochemical Properties of Unripe Korean Peaches According to Cultivars)

  • 김다미;김경희;최인자;육홍선
    • 한국식품영양과학회지
    • /
    • 제41권2호
    • /
    • pp.221-226
    • /
    • 2012
  • 복숭아 유과의 이용 가능성 탐색을 위하여 복숭아 유과과육의 품종에 따른 성분 함량 및 품질특성을 조사하여 비교 분석하였다. 품종별 복숭아 유과(용택골드, 천중도백도, 마도카, 몽부사, 장택백봉, 홍백)의 외형적 특성을 비교한 결과 전체적으로 마도카가 가장 크고 몽부사가 가장 작은 것으로 나타났다. 일반성분을 측정한 결과 몽부사에서 수분함량이 가장 낮았으며, 조단백 함량은 장택백봉 가장 높아 조단백 함량이 가장 낮은 마도카와 유의적으로 차이를 나타내었다. 조지방 및 조탄수화물 함량에서는 품종 간 큰 차이가 없었으며, 조회분 함량은 마도카에서 0.69%로 다른 품종에 비하여 높은 함량을 나타내었다. 품종별 복숭아 유과의 pH를 측정한 결과 다른 품종과 비교하여 천중도백도에서 유의적으로 높게 나타났으며, 당도 실험 결과에서는 홍백이 다른 품종에 비하여 유의적으로 낮은 당도를 나타냈다. 색도 중 L값은 장택백봉에서 가장 높았고, a값은 전체적으로 -5 이하의 음의 값을 보이며 홍백에서 가장 높았으며, b값은 마도카에서 가장 높았다. 품종별 복숭아 유과의 경도는 홍백, 장택백봉, 천중도백도, 마도카, 용택골드, 몽부사 순으로 전반적으로 백도가 황도에 비해 높은 경도를 보였다. Vitamin C 함량을 측정한 결과에서는 품종에 따른 유의성을 보이지 않았으며, 환원당 함량은 6.34% 이상의 높은 수치를 보여 가공품 및 식품산업 소재로 사용되기에 부족함이 없다고 사료되었다. 따라서 현재 복숭아 유과가 거의 활용되지 못하고 전량 폐기되고 있는 실정을 감안해 볼 때 산업적 가치가 높다 사료되므로, 복숭아 유과의 기능성 및 생리활성 규명 등을 통한 미이용 폐자원의 활용도를 높일 수 있는 추가적인 연구가 필요할 것으로 생각된다.

여성 골관절염 환자의 일상생활 수행능력 (A Study on Degree of Daily Living Activities among Women with Osteoarthritis)

  • 양경라;이선자
    • 근관절건강학회지
    • /
    • 제5권1호
    • /
    • pp.57-71
    • /
    • 1998
  • This study purports to examine sociodemographic characteristics and those factors associated with osteoarthritis in women experiencing the disease in order to make suggestions for the prevention and management of osteoarthritis in women. The subjects were 143 women who were diagnosed to have osteoarthritis and under follow-up care at an outpatient department of a university-affiliated hospital. The data were collected through personal interviews by using the structured questionnaire between October 6 and October 24, 1997. The degree of daily living activities was measured with 24 items, which were made based upon Katz Index, Barthel Index and Functional Status Index. Each item has 4 response categories : (1) being able to do alone with any difficulty, (2) being able to do alone with some difficulty, (3) being able to do alone with the help of a person or an instrument, (4) not being able to do at all. The data was analyzed with correlation analysis, t-test, ANOVA, and regression analysis. The results are summarized as follows : 1. As for the age of the subjects, 59.4% were between 45 and 64 years, while 28% were 65 years and above. The subjects having religion were 71.7% and 44.1% of the subjects were protestants. The educational level was low : 31.5% graduated from elementary school, while 30.1% had no formal education. Those married subjects were 72%. Fifty nine percent of the subjects evaluated their economic status as middle class. 2. Those people from whom the subjects currently receive some help were spouses in 35.8% of the subjects. Likewise, 50% of the subjects indicated spouse as the people from whom they want to receive help. 3. The score of the ability of daily living activities ranged between 48 and 96, with the mean of 78.94. Those means of physical activity, ADL(activities of daily living) and IADL(instrumental activities of daily living) were 14.89, 13.97 and 50.09, respectively. Except for the items of carrying heavy stuff and of washing clothes in the sitting position the subjects showed independence in more than 90% of the items, where Independence is defined as being able to do alone or with the help of a person or an instrument. 4. The increase in age was a significant predictor of the decrease in the ability of daily living activities. Those graduated from middle school and above showed a significantly higher degree in the ability of daily living activities than those with less educational level. The married women revealed significantly higher scores in physical activity, ADL, and IADL than the unmarried ones. The ability of daily living activities was not significantly related to having religion, economic status and living with family. 5. The average duration of experiencing osteoarthritis was 4 years and 7 months. Regarding the site of the onset, 65% of the subjects indicated knees. The women with osteoarthritis for less than 3 years were 65%. The ability of daily living activities was significantly different by the duration of illness : the longer the duration of illness, the less the ability of activities. The above findings suggest the need for developing those programs for prevention disabilities in performing daily living activities and for managing diseases targeting the women of middle and old age, with low educational level, and with unmarried status. In addition, there should be developed an instrument for measuring the ability of daily living activities which reflects daily lives of Korean women with osteoarthritis in order to examine comprehensive effects of osteoarthritis on women's daily lives in this country.

  • PDF

미숙아에서 채혈을 위한 발뒤꿈치 천자시 두 종류 천자 기구의 비교 (A Comparative Study of Two Different Heel Lancet Devices for Blood Collection in Preterm Infants)

  • 임효빈;류미주;정지미;전가원;신종범
    • Neonatal Medicine
    • /
    • 제17권2호
    • /
    • pp.239-244
    • /
    • 2010
  • 목적: 효과적인 미숙아에서의 채혈방법을 모색하기 위해 미숙아에서 발뒤꿈치 천자시 새로운 자동화 천자기구(automatic lancet device)와 기존에 사용되던 고식적 수동식 천자침(conventional manual lancet device) 의 효과를 비교하여 임상에서의 유용성을 알아보고자 한다 방법: 재태 연령 37주 미만의 미숙아 총 100명을 대상으로 하였다. 연구 대상아들은 발뒤꿈치 천자시 무작위로 각 50명씩 고식적 수동식 천자 기구를 사용한 군(50명)과 자동화 천자 기구를 사용한 군(50명)으로 나누었으며, 발뒤꿈치 천자시 통증의 정도 및 천자 횟수, 검사 시간, 출혈의 여부 등을 평가하였다. 통증의 평가는 Premature Infant Pain Profile (PIPP) 점수와 최고 심장 박동수를 측정하였고, 검사시간은 발뒤꿈치 천자 시작으로부터 1개의 microtube에 채혈을 완료하는 시간까지를 측정하여 비교하였다. 천자횟수는 1개의 microtube를 혈액으로 채우기 위해 발뒤꿈치를 천자한 횟수를 측정하였다. 그리고 검사 12시간 이내에 발뒤꿈치 및 발목 주위에 출혈이나 멍 등을 관찰하였다. 결과: 통증을 나타내는 PIPP 점수의 평균은 자동화 천자기구군에서 4.91로 고식적 천자기구 군 5.84에 비해 유의하게 낮게 측정되었다(P=0.0255). 검사에 소요되는 시간은 고식적 천자군에서 평균 48.92초, 자동화 천자군에서 평균 30.69초로 자동화천자기구를 사용한 군에서 통계적으로 유의하게 짧았다(P<0.0001). 천자 횟수의 평균값은, 자동화 천자군에서 1.02로, 고식적 천자군 1.35에 비해 통계적으로 의미 있게 낮았다(P=0.0001). 검사후 출혈반점이나 멍 등은 고식적 천자기구 군에서 15례(30%), 자동화 천자기구 군에서 3례(6%)로 자동화 천자기구 사용 군에서 의미 있게 적게 나타남을 관찰할 수 있었다(P=0.0024). 결론: 자동화 절개형 천자기구(BD QuickHeel)는 검사 실패율이 낮으며, 짧은 시간에 채혈이 가능하고, 멍이나 출혈 같은 부작용이 적어 신생아, 특히 최근 생존율이 향상되어 증가되고 있는 미숙아에서 발뒤꿈치 천자에 의한 채혈에 유용한 도구가 될 수 있겠다.

생쥐에서 과배란 유도시 인간융묘 성선자극 홀몬 투여 방법이 체외수정 및 배자의 체외성장에 미치는 영향에 관한 연구 (The Effect of the Timing and Dose of Human Chorionic Gonadotropin on Oocyte Recovery, in Vitro Fertilization, and Preimplantation Development in Superovulation of Mouse)

  • 양승희;김향미;오승은;손영수;유한기;우복희
    • Clinical and Experimental Reproductive Medicine
    • /
    • 제21권2호
    • /
    • pp.165-176
    • /
    • 1994
  • This study was carried out to investigate the effect of the timing and dose of human chorionic gonadotropin(hCG) on oocyte recovery, in vitro fertilization, and preimplantation development in superovulation of mouse. F1 hybrid($C57BL{\times}CBA$) mice were obtained and superovulation was induced in female mice by sequential intraperitoneal injection of PMSG and hCG. In the first series of experiments, mice received 5 IU of PMSG given intraperitoneally, and 48 hours later were injected 1 IU, 5 IU, or 10 IU of hCG respectively. In the second series of experiments, mice received 5 IU of PMSG given intraperitoneally and were injected 5IU of hCG 36, 48, or 60 hours later respectively. 1. When the mice received 5 IU of PMSG given intraperitoneally and 48 hours later were injected 1 ItT, 5 IU, or 10 IU of hCG respectively, there were no differences in the total number of the oocytes obtained from the three experimental groups. When the cultures were examined 48 hrs after the termination of insemination the proportion of unfragmented oocytes which had developed over two-cell stage was observer to be lowest in 10 IU hCG group. When the cultrues were examined 120 hour after termination of insemination the proportion of embryos which had developed to the blastocyst stage was observed to be significantly higher in 10IU hCG group than 5IU hCG group(p<0.05), but there was no difference between 10 IU hCG group and 1IU hCG group. 2. When the mice received 5 IU of PMSG and were injected 5 IU of hCG 36, 48, or 60 hours later respectively, there were no differences in the total number of oocytes obtained from the three experimental groups. When cultures were examined 48 hour after the termination of insemination the proportion of unfragmented oocytes which had developed over two-cell stage was observed to be significantly lower in 36 hour interval group than 48 hour interval and 60 hour interval group(p<0.05). When the cultures were examined 120 hour after termination of insemination the proportion of embryos which had developed to the blastocyst stage was found to be higher in 60 hour interval group than 36 interval or 48 hour interval group (P<0.05), and the proportion of hatching blastocyst was found to be higher in 60 hour interval group as well. In this study, it was concluded that the administration of adequate dose of hCG, and long (60 hour) PMSG-hCG interval were necessary in superovulation of mice($C57BL{\times}CBA$) in order to get a large number of oocytes which had an early oocytes which had an early embryonic developmental capability when fertilized in vitro, and especially it had better have been avoided to administer a large dose of hCG.

  • PDF

한국 고유종 Pisidium (Neopisidium) coreanum (산골조개) 의 metallothionein 유전자를 기초로 한 분자계통 분류학적 연구 (Phylogenetic Analysis based on Metallothionein Gene Sequence of an Indigenous Species Pisidium (Neopisidium) coreanum in Korea)

  • 백문기;이준서;강세원;이재봉;강현정;조용훈;노미영;한연수;최상행;채성화;박홍석;이준상;이용석
    • 한국패류학회지
    • /
    • 제25권2호
    • /
    • pp.153-160
    • /
    • 2009
  • Pisidium (Neopisidium) coreanum의 metallothionein 유전자는 염기서열 315개로 이루어져있으며 105개의 아미노산으로 이루어져 있었다. 연체동물의 metallothionein 서열의 공식[C-x-C-x(3)-C-T-G-x(3)-C-x-C-x(3)-C-x-C-K] 에 맞춰본 결과 알려진 공식과 상당히 일치하는 것을 확인할 수 있었으며 아미노산의 조성도 시스테인 (Cys) 이 약 1/3 정도 함유하는 사실을 확인 할 수 있었다. BLAST 결과를 토대로 선정 되어진 80개의 참고 서열 중 아미노산 레벨에서 가장 높은 스코어로 align 되는 서열들은 담수패인 Dreissena polymorpha (zebra mussel), Unio tumidus (swollen river mussel) and Crassostrea ariakensis (suminoe oyster) 등으로 나타났다. ClustalX 를 통해 multiple align 한 후 Neighbor-Joining 방법에 따라 phylodendrogram을 그려본 결과 Pisidium (Neopisidium)coreanum의 MT는 Dreissena polymorpha (Dp), Crassostrea gigas (Cg4), Crassostrea virginica (Cv7) 등의 생물들과 같은 군으로 묶이는 것을 관찰 할 수 있었다. Psipred 소프트웨어를 통해 2D 구조를 비교 분석 한 결과도 multiple align 및 phylodendrogram 결과와 밀접한 관계가 있음을 알 수 있었다. 이러한 결과를 통해 EST를 통해 밝혀진 Pisidium (Neopisidium) coreanum의 MT 서열은 근연종 들의 서열과 일치함을 알 수 있었으며 이러한 결과에 기인하여 MT 서열은 분류에 사용 될 수 있다고 사료된다.

  • PDF

Treatment and Follow-up of Human Papillomavirus Infected Women in a Municipality in Southern Brazil

  • Ruggeri, Joao Batista;Agnolo, Catia Millene Dell;Gravena, Angela Andreia Franca;Demitto, Marcela de Oliveira;Lopes, Tiara Cristina Romeiro;Delatorre, Silvana;Carvalho, Maria Dalva de Barros;Consolaro, Marcia Edilaine Lopes;Pelloso, Sandra Marisa
    • Asian Pacific Journal of Cancer Prevention
    • /
    • 제16권15호
    • /
    • pp.6521-6526
    • /
    • 2015
  • Background: This study aimed toanalyze the risk behavior for cervical cancer (CC) and the human papillomavirus (HPV) prevalence and resolution among women who received care through the private healthcare network of a municipality in southern Brazil. Materials and Methods: This descriptive and retrospective study was conducted with 25 women aged 20 to 59 years who received care through the private healthcare network and were treated at a specialty clinic in the period from January to December 2012 in a municipality in Northwest Parana, Southern Brazil. Data from medical records with cytological and HPV results were used. Following treatment, these women were followed-up and reassessed after 6 months. Data were statistically analyzed using the t-test and chi-squared test at a 5% significance level. Results: The mean age of the studied women was $27.8{\pm}7.75$ years old, and the majority were married, with paid employment and were non-smokers. The mean age at menarche was $13.0{\pm}0.50$ years old, and the mean age at first intercourse was $17.5{\pm}1.78$ years, with only 8.0% (2) initiating sexual activity at an age ${\leq}15$ years old. The majority had 1 to 2 children (60.0%), while 88.0% reported having had one sexual partner in their lifetime, and all the women were sexually active. A total of 68.0% used a hormonal contraceptive method. All the women had leukorrhea and pain and were infected by a single HPV type. Regarding the lesion grade, 80.0% showed high risk and 20.0% low risk. The most prevalent high-risk HPV strain was 16. Conclusions: These findings provide relevant information on HPV risk factors and infection, as well as the treatment and 6-month follow-up results, in economically and socially advantaged women with no traditional risk factors, corroborating previous reports that different risk factors may be described in different populations. Thus, this study reinforces the fact that even women without the traditional risk factors should undergo HPVmonitoring and assessment to determine the persistence of infection, promoting early diagnosis of the lesions presented and appropriate treatment to thus prevent the occurrence of CC.

암환자 인식에 관한 연구 - 간호사ㆍ의사를 중심으로

  • 조인향
    • 호스피스학술지
    • /
    • 제2권1호
    • /
    • pp.58-74
    • /
    • 2002
  • This paper constitutes a descriptive investigation and used a structured questionnaire to investigate nurses' and doctors' recognition of cancer patients. The subjects were extracted from the medical personnel working at the internal medicine, the surgery ward, the obstetrics and gynecology department, the pediatrics department, the cancer ward, and the emergency room of five general hospitals located in Seoul and Gyeonggi Province. The research lasted from August, 2001 to September 2001. Total 137 nurses and 65 doctors were included and made out the questionnaires directly distributed by the investigator. The study tool was also developed by the investigator and consisted of such items as the demographic and social characteristics, the medical personnel's recognition degree of cancer and cancer patients, their recognition of the management of cancer patients, and their participation in a hospice. The results were analyzed using the SPSS Window program in terms of technological statistics, ranks, t-test, and ANOVA. The reliability was represented in Cronbach' α=.75. The nurses' and doctors' recognition degree of cancer and cancer patients had an overall average of 3.86 at the 5 point-scale. The items that received an average of 4.0 or more included 'Medical personnel should explain about the cancer cure plans to the cancer patient and his or her family', 'A patient whose case has been diagnosed as a terminal cancer should be notified of it, 'If I were a cancer patient, I would want to get informed of it,' and 'Cancer shall be conquered whenever it is'. In the meantime, the items that received an average of 3.0 or less was 'My relationship with the cancer patient's family has gotten worse since I announced his or her impending death.' And according to the general characteristics and the difference test, the recognition degree of cancer and cancer patient was high among the subgroups of nurses, females, married persons, who were in their 30s, who had a family member that was a cancer patient, and who received a hospice education. The biggest number of the nurses and doctors saw 'a gradual approach over several days'(68.8%) as a method to tell a cancer patient about his or her cancer diagnosis or impending death. Those who usually tell tragic news were the physician in charge(62.8%), the family members or relatives(32.1%) and the clergymen(3.8%) in the order. The greatest number of them recommended a cancer patient's home as the place where he or she should face death because they thought 'it would stabilize his or her mentality'(91.9%) while a number of them recommended the hospital because they 'should give the psychological satisfaction to the patient'(40%) or 'should try their best until the last moment of the patient's death'(30%). A majority of the medical personnel regarded 'smoking or drinking' and 'diet' as the causes of cancer. The biggest symptom of a cancer patient was 'pain' and the pain management of a cancer patient was mostly impeded by the 'excessive fear of drug addiction, tolerance to drugs and side effects of drugs' by medical personnel, the patient, and his or her family. The most frequently adopted treatment plan of a terminal cancer patient was 'to do whatever the patient or his or her family wants' to resort to a hospice' and 'to continue active treatment efforts' in the order. The biggest reasons why a terminal cancer patient went to see a doctor were 'pain alleviation' 'control of symptoms other than pain(intravenous supply)' and 'incapability of the patient's family' in the order. Terminal cancer patients placed their major concern in 'spiritual(religious) matter' 'emotional matters' their family' 'existence' and 'physical matters' in the order. 113(58.5%) of the whole medical personnel answered they 'would recommend' an alternative treatment to a terminal cancer patient mostly because they assumed it would 'stabilize the patient's mentality.' Meanwhile, 80(41.5%) of them chose 'not to recommend it mostly due to the unverified effects and high cost of it(78.7%). A majority of them, I. e. 190(94.1%) subjects said they 'would recommend' a hospice to a terminal cancer patient mostly because they thought it would help the patient to 'mentally prepare'(66.6%) Only 17.3% of them, however, had received a hospice education, most of which was done through the hospital duty education(41.4%) and volunteer training(34.5%). The follows are results of this study: 1. The nurses and the doctors turned out to be still passive and experience confusion in dealing with a cancer patient despite their great sense of responsibility for him or her. 2.Nurses and Doctors realize the need of a hospice, but an extremely small number of them participate in a hospice education or performance. Thus, a whole recognition of a hospice should be changed, for which purpose a hospice education for nurses and doctors should be provided. 3.Terminal cancer patients preferred their home to a hospital as the place to face their impending death because they felt it would bring 'mental stability.' And most of nurses and doctors think it would be unnecessary for them to be hospitalized just for control of their symptoms. Accordingly a terminal cancer patient can be cared at home, and a home hospice care needs to be activated.

  • PDF

농업용수리시설의 유지관리체제일원화에 관한 연구 - 충남지역 수리계 운영실태조사결과를 중심으로 - (A Study on the Unified Operation and Maintenance System of Irrigation Facilities in Korea - With Reference to the Survey Results on the Activities of Irrigation Fraternities in Chungnam Province -)

  • 김성민;임재환
    • 농업과학연구
    • /
    • 제31권1호
    • /
    • pp.53-75
    • /
    • 2004
  • This study is aimed at identifying the national economic value of the irrigation facilities by reviewing the existing papers on economic values of the irrigation facilities and presenting current status of dual O & M problems of the irrigation facilities. This study suggested the unified O & M system rather than continuing the existing dual O & M system of irrigation facilities based on the surveyed results of the activities of irrigation fraternities in Chungnam Province. The findings and proposals for the successful unified and mono O & M system of the irrigation facilities are as follows: (1) Total number of irrigation facilities in the nation accounts for 67,582, while the total length of irrigation and drainage canals amounted to about 174,259km. On account of the total length of structural canals was estimated at 31%, much losses of water and much O & M costs have been inevitable for the full irrigation rice culture. In spite of the past heavy investment for irrigation facilities, the ratio of rain-fed and partially irrigated paddy fields accounts for 23% in 2003. Both Korea Agricultural and Rural Infrastructure Corporation (KARICO) and the city and Gun Governments have managed the irrigation facilities separately by irrigation fraternities. The KARICO have commanded 59% of irrigation paddy area with 18% of the total irrigation facilities, while the city and Gun governments covered 41% of irrigation paddy area with 82% of the existing number of irrigation facilities representing small and medium scale. (2) The 1999 demand prices of irrigation water per ton expressed in 2000 constant market price was estimated at 388 won, the supply price was amounted to 184 won per ton. Considering the supply and demand curve of the irrigation water, the existing irrigation facilities could not satisfy the demand of irrigation water. (3) In 1999, total present added value of the irrigation facilities during the economic life accounted for 48 trillion won, while total supply cost was 44.7 trillion won. The marginal benefit and cost ratio of irrigation water was 1.08. (4) The total O & M cost per year amounting to 681.1 billion won have been required to maintain and repair the existing irrigation facilities in Korea. For the successful unified O & M of irrigation facilities covering whole irrigated paddy field in Korea, 950 billion won of O & M costs are required to keep up the marginal benefit of irrigation water as 2,800 billion won per year. The total O & M cost as 950 billion won should be allocated 40%, 380 billion won for O & M costs of irrigation facilities and 60%, 570 billion won for improvement of irrigation facilities. (5) The study investigated and reviewed the present O & M status of the irrigation facilities by small and medium irrigation fraternities. Most of the farmers belong to the irrigation fraternities preferred not only unified O & M but also KARICO take-over of the whole O & M activities of the irrigation facilities. The prevailing O & M cost per 10a expended by the Corporation was amounted to 104,890 won, while that of city and Gun governments was only amounted to 4,600 won per 10a. regarding the small amount of O & M cost expended by city and Gun governments, it is evident that the existing irrigation system have been managed ineffectively and deteriorated the facilities comparing that of KARICO. In conclusion, the Government could not satisfied the demand of irrigation water by suppling water with existing irrigation facilities. Therefore new additional investment and financial support for irrigation water development should be made to convert rain-fed and partially irrigated paddy fields into fully irrigated ones. The operation and maintenance cost should be supported to keep the marginal values of rice production of existing irrigation facilities in the national economy and to modernize the obsolete irrigation facilities. By unifying the existing dual O & M systems, all the farmers belong to the irrigated paddy fields have to be equally benefited and could be increased their farm income and be stabilized their rural lives.

  • PDF

20대 구강보건지식과 구강위생관리능력이 치주건강상태평가에 미치는 영향 (The Effect of Dental Health Knowledge and Oral Hygiene Management Skills on Periodontal Health Status Assessment in Their Twenties)

  • 복혜정;이은주;최정미
    • 치위생과학회지
    • /
    • 제13권1호
    • /
    • pp.36-44
    • /
    • 2013
  • 본 연구는 치주질환을 조기에 발견하고 예방하기 위해 20대의 구강보건지식과 구강위생관리능력이 치주건강상태평가에 미치는 영향을 비교 분석함으로써 국민의 구강보건관심도를 높일 뿐 아니라 치주건강증진활동에 지식과 정보를 제공하여 건강하고 효율적인 구강관리를 하는 데 기초자료를 제공할 목적으로 조사되었다. 포괄 치위생 관리 및 처치를 위하여 치위생과 실습실을 방문한 20대의 성인 130명을 대상으로 설문조사를 실시하고, 치주건강상태를 평가하였다. 일반적 특성, 구강보건지식, 구강위생관리능력과 치주건강상태평가의 연관성을 조사 분석하여 다음과 같은 결과를 얻었다. 1. 성별에 따른 잇솔질(p=0.030)과 구강위생용품(p=0.047)에 대한 구강보건지식은 통계적으로 유의하였고, 여성이 구강보건에 대한 지식이 높게 나타났다. 2. 성별에 따른 잇솔질(p=0.030)과 구강위생용품(p=0.047)에 대한 구강보건지식은 통계적으로 유의하였고 여성이 구강건강에 대한 지식이 높게 나타났다. 3. 성별에 따른 유두변연부착 치은염지수(p=0.047)와 지역사회치주지수(p=0.028)는 통계적으로 유의하였다. 남자의 유두변연부착 치은염지수, 지역사회치주지수는 여자보다 높았다. 학력에 따른 출혈지수(p=0.042)는 통계적으로 유의하였고, 고졸 이하가 가장 높았다. 4. 잇솔질(p=0.030), 치주질환(p=0.024)에 대한 구강보건지식이 치면세균막지수에 미치는 영향이 통계적으로 유의하게 나타났다. 잇솔질에 대한 구강보건지식($\beta$=-0.137)이 증가하면 치면세균막지수가 감소하고, 치주질환에 대한 구강보건지식($\beta$=-0.144)이 증가하면 치면세균막지수가 감소한다. 5. 잇솔질 총 횟수에 따른 유두변연부착 치은염지수는 2회가 가장 높았다. 잇솔질 방법에 따른 치면세균막지수는 묘원법이 가장 높았으며, 횡마법, 회전법 순으로 나타났다. 구강위생용품을 사용하지 않는 경우의 지역사회치주지수와 출혈지수가 구강위생용품을 사용하는 경우보다 높았다. 흡연의 경우 유두변연부착 치은염지수, 지역사회치주지수, 출혈지수가 흡연을 하지 않는 경우보다 높았다. 주 당 음주 횟수에 따른 지역사회치주지수와 출혈지수는 3회 이상이 가장 높았다. 구강보건교육을 경험하지 못한 경우의 유두변연부착 치은염지수가 구강보건교육을 경험한 경우보다 높았다.