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- 저자 : Jung-Hoe Kim(김정회) (검색결과 36 건)
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$Poly{\cdot}Si-SiO_2$를 통한 저농도 붕소확산
김정회,주병권,김철주,Kim, Jung-Hoe,Ju, Byeong-Kwon,Kim, Chul-Ju The Institute of Electronics and Information Engin 1987 전자공학회논문지 Vol.24 No.2
Boron diffusion into silicon through poly\ulcorneri-SiO2 was carried out for the diffusion with low concentration using CVD-BN. The result of direct boron diffusion from BN into silicon and that of boron diffusion through SiO2 from BN into silicon was compared with the result of boron diffusion through poly-Si-SiO2 from BN into silicon. In the case of boron diffusion through poly Si-SiO2, the low concentration diffusion was obtained, that is the boron surface concentration in silicon Cs=10**16 Cm**-3, and the glassy compounds were not seen.
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이정한,김형식,허문창,김정회,Yi, Jeong-Han,Kim, Hyung-Sik,Hur, Moon-Chang,Kim, Jung-Hoe 대한의용생체공학회 2006 의공학회지 Vol.27 No.6
Medical magnetic stimulator generates strong magnetic field pulses. Clinical applications of the magnetic pulse are the stimulation of nervous system and the contraction of muscle. The unique source of the strong magnetic pulse is a capacitor-inductor resonator and this inductor generates a strong sinusoidal magnetic pulse by discharging the capacitor with high initial voltage. Continuous muscle contraction needs sequential generation of the magnetic pulses. However, to keep the magnitude of sequential pulses identical, an expensive high-voltage power supply have to support voltage drop of the capacitor between the pulses. A protection circuit between the supply and the resonator is necessary to protect the supply from reverse current caused by capacitor voltage reversal. In this paper, a new circuit structure of the magnetic stimulator adopting a low-frequency fly-back switching is proposed. The new circuit supports sequential pulse generation and allows the reverse current without damage. Performance of the new circuit is examined and a low-cost magnetic stimulator for urinary incontinence therapy is being developed using the presented method.
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이원영,김정회,남정현,문옥륜,신영전,Lee, Weon-Young,Kim, Jung-Hoe,Nam, Chung-Hyun,Moon, Ok-Ryun,Shin, Young-Jeon 대한예방의학회 1999 예방의학회지 Vol.32 No.3
Objectives: This is a descriptive study which was carried out to identify characteristics of the chronic mentally ill and their families in a rural area and the influencing factors on family burden. Methods : Data was collected for seven months beginning April 1, 1998 by questionnaire from chronic mentally ill patients and their families in two towns and seven townships of the rural areas of Kyonggi Province. In additional to the mental diagnosis of the mentally ill patients, family burden was measured by interviewing the other family members using the questionnaire developed by Pai & Kapur (1981). Of those interviewed, 103 patients were selected for final analysis. Results : Of 103 mentally ill patients, 36.1% of the subjects were not under treatment. In particular, of 29 patients with schizophrenia, 48.3% of the subjects had stopped taking medication and 6.9% of the subjects had never been treated. According to the results of a specialized examination by a psychologist, 81% of patients were in need of Hospitalization. Most primary caregivers were parents. Of the 101 primary caregivers in the study, 39.6% were over 65 years old. In case of death of the primary caregiver, 50.5% of these 101 mentally ill patients would not have anyone to care for them. Of the various kinds of family burden, primary caregivers most often reported psychological stress. Overall, the families of dementia and schizophrenia patients complained of the most family burden. Through univariative analysis, the variables of sex, education and current treatment type of the patients, the relationship with the patient and marital status of the primary caregiver and the number of people living together in the household showed significant correlation with the family burden of schizophrenia patients. Univariative analysis also showed that there were a number of variables which were correlated to the family burden in mentally retarded patients. Concerning the need for mental health services, the most common requests were for entitlement to disability benefits and housing programs. Conclusions: Community mental health services in rural areas must be developed, planned and executed in consideration of the local situation. In particular, the development of various family support programs is needed in order to mitigate emotional, mental and economic burdens and carry out a positive role to care for and rehabilitate patients.
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Candida parapsilosis 돌연변이주에 의한 Xylitol 생산조건의 최적화
오덕근,김상용,김정회,Oh, Deok-Kun,Kim, Sang-Yong,Kim, Jung-Hoe 한국응용생명화학회 1996 Applied Biological Chemistry (Appl Biol Chem) Vol.44 No.1
Candida parapsilosis ATCC 22019 돌연변이주를 이용하여 xylitol 생산에 영향을 주는 배양 조건인 pH와 온도 그리고 교반속도 및 산소전달속도등의 환경인자가 Xylitol의 생성에 미치는 영향을 살펴보았다. 발효조에서 pH가 증가 할수록 균체농도와 기질소비속도가 증가하여 발효시간이 단축되었다. 그러나, Xylitol생산은 pH 4.5와 5.5에서 큰 차이 없이 50g/l의 xylose로 부터 약 34g/l로 최대농도를 보여주었다. 온도가 증가 할수록 최대 비증식속도가 증가하였지만 최종 균체농도는 감소하였고, xylitol 생산성은 $30^{\circ}C$에서 최대값을 보여주었다. 산소전달속도의 영향을 조사하기 위하여 발효조의 교반속도를 변화시키면서 배양한 결과 균체농도는 산소 전달속도가 높을수록 증가하였지만, xylitol 생산은 크게 감소하였다. 교반속도를 150rpm(산소전달속도 $30\;hr^{-1}$에 해당)으로 배양할때 발효시간 62시간에서 50g/l의 xylose로 부터 xylitol 농도가 35.8g/l로 최대값을 나타내었다. Xylitol 생산성을 증가시키기 위하여 1차 발효가 끝난 발효조에서 균체를 회수하여 20g/l로 농축하여 최적조건인 pH 4.5, $30^{\circ}C$, 산소전달속도 $30\;hr^{-1}$에서 재배양을 하였을 때 50g/l의 xylose가 배양시간 약 18시간만에 모두 이용되었고 전환수율 80%에 해당하는 40g/l의 Xylitol이 생성되었다. 이때 Xylitol의 생산성은 2.22g/l-hr으로 일반 발효때 얻은 $0.5{\sim}g/l-hr$ 보다 약 $3{\sim}4$배 증가되었다. Effect of culture conditions such as pH, temperature, agitation speed and oxygen transfer rate on xylitol production from xylose by Candide parapsilosis ATCC 21019 mutant was investigated in a jar fermentor. The initial concentration of xylosr was fixed at 50 g/l in this experiment. When pH was increased, cell growth and xylose consumption rate were increased, but maximum xylitol production was shown in the range of pH 4.5 and 5.5 with a yield of 0.68 g/g-xylose. The optimal temperature for xylitol production was determined to be $30^{\circ}C$. Considering the importance of dissolved oxygen tension, for xylitol production, the effect of oxygen transfer rate coefficient $(k_La)$ on fermentation parameters was carefully evaluated in the range of $20{\sim}85\;hr{-1}\;of\;k_La$ (corresponding to $100{\sim}300$rpm of agitation speed). The xylitol production was maximized at $30\;hr^{-1}\;of\;k_La$(150 rpm). A higher oxygen transfer rate supported better cell growth with lower xylitol yield. It was determined that maximum xylitol concentration, xylitol yield and productivity was 35.8 g/l, 71.6% and $0.58\;g/l{\sim}hr^{-1}$, respectively, at $30\;hr^{-1}\;of\;k_La$ In order to further increase xylitol productivity, ferementation using the concentrated biomass(20 g/l) was carried out at the conditions of pH 4.5, $30^{\circ}C$ and $30\;hr\;1$ of oxygen transfer rate. The final xylitol concentration of 40 g/l was obtained at 18 hours of culture time. From this result, it was calculated that xylitol yield was 80ft on the basis of xylose consumption and volumetric productivity was $2.22\;g/l{\sim}hr$ which was increased by $3{\sim}4$ fold compared with $0.5{\sim}0.7\;g/l-hr$ obtained in a normal fermentation condition.
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이건세,주지수,김정회,김건엽,Lee, Kun-Sei,Joo, Ji-Soo,Kim, Jung-Hoe,Kim, Keon-Yeop 한국호스피스완화의료학회 2008 한국호스피스.완화의료학회지 Vol.11 No.4
목적: 본 연구는 현재 호스피스완화의료 기관의 인력 및 시설, 제공서비스 등이 말기 암환자 전문의료기관 지정 기준에 부합하는 정도를 조사하고 분석하여 향후 정책수립을 위한 기초자료를 제공하고자 실시되었다. 방법: 자료는 2007년 10월부터 12월까지 수집되었으며 설문내용으로는 호스피스 완화의료 기관의 일반현황, 인력현황, 시설현황, 장비현황, 호스피스 서비스 운영현황 등을 포함하였다. 총 62개 의료기관이 응답하였다. 결과: 전체 62개 기관 가운데 42개 기관이 종합병원 이상인데 비하여 의원의 경우 9개 기관에서 호스피스를 제공하고 있었다. 호스피스 의료기관은 수도권 지역 위주로 분포하고 있어 지역적인 불균형 공급을 보이고 있다. 의사의 경우 환자 10명당 1인의 의사를 갖추고 있는 기관은 종합병원 이상(80.0%)인데 비하여 의원의 경우 이 기준을 충족하는 비율은 낮았다(42.9%). 간호사의 경우 호스피스 간호를 위해 필요한 조건인 환자 1.5 명당 1인의 기준에 충족하는 기관은 의원급(71.4%)이 종합병원 이상의 기관(65.0%), 병원(50.0%)에 비해 높게 나타났다. 호스피스 지원기관의 기준에 해당하는 1병실 4인 기준을 충족하는 기관은 전체 62개 기관에서 14개 기관으로 22.6%를 차지하고 있었다. 호스피스 환자들을 위한 특수요법의 경우는 의원급(66.7%), 병동 및 독립형(64.9%), 지원 사업 기관(73.9%)일수록 2개 이상의 특수요법을 실시하고 있는 것으로 나타났다. 임종 및 사별관리 프로그램에 해당하는 임종관리, 장례준비, 유가족지지모임, 사별가족 관리 프로그램을 실시하는 기관의 비율이 높았으며, 의원급, 병동 및 독립형, 지원 사업 수록 실시율이 높게 나타났다. 팀 인력에 대한 교육은 의원급(55.6%), 병동형 및 독립형(55.8%), 지원기관(65.2%) 이 상대적으로 높은 비율로 시행하고 있었다. 현재 가정 호스피스 서비스를 운영하고 있는 곳은 절반 수준인 32개(51.6%) 기관으로 나타났다. 결론: 본 연구를 통해 확인한 것은 호스피스 기관을 양적으로 확대하는 것과 함께 지역적인 분포를 동시에 고려하는 것이 필요하다는 점과 아직도 호스피스 지원 기관의 인력, 시설 수준을 충족하지 못하는 비율이 높다는 것을 확인하였다. 또한 호스피스 기관의 종별 특성에 따라 인력 및 시설 확보 수준, 프로그램 운영에 차이가 있으므로 시설의 특성을 고려한 개선 방안을 고려하여야 할 것이다. Purpose: The purpose of this study was to evaluate the current status of hospice palliative care facilities, and to identify problems and improve hospice palliative care in Korea. Methods: The questionnaire survey was implemented from October to December, 2007. It was consisted of general characteristics of organization, health manpower, facilities & equipments, service programs, and so on. Sixty two (79.5%) out of 78 hospice palliative care facilities returned the questionnaires. Results: They were 42 hospital-based hospice palliative care hospitals and 9 clinics, and most of them are located at central metropolitan areas (Seoul and Gyeonggi Province). more than 80% of hospitals met with the requirements (one doctor per 10 patients and one nurse per 1.5 patients), whereas 42.9% of clinics met the requirements. Approximately 22% of them met the requirement of sick room (4 patients for 1 room). Most of them provided various hospice palliative care programs. The proportion of giving regular education programs to hospice palliative care personnels were about half (41.9%). Thirty two (51.6%) facilities provided home visiting hospice palliative care service. Conclusion: There were lack of enough health manpower, rooms, and programmes and they varied among facilities. It is necessary to increase the number of hospice palliative care facilities with consideration of regional fair distribution and standardization of programmes.
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