각 지방의 난방과 냉방도일에 관한 조사연구(1968 ~ '77)

김건호,최규황,김인호 경상대학교 경남문화연구소 1979 慶南文化硏究 Vol.2 No.1

The evaluation of the heating, cooling degree-day and it's number of days in the heating and cooling season were carried out based on the fundamental materials of the daily air-temperature from Jan. 1968 to Dec. 1977 which had been observed in the 24 meteorological observations in Korea. The obtained results were summarized as follows: (1) In the cases of base temperature 18,16,14,12,10, and 5℃, the annual mean heating degree-day(℃-day) were evaluated as HD′_(18-18)≒2570, HD′_(16-16)≒2120, HD′_(14-14)≒1710, HD′_(12-12)≒1360, HD′_(10-10)≒1040 and HD′_(5-5)≒420 (see, Table-1). (2) In the cases of base temperature 24℃, the annual mean cooling degree day were evaluated about CD′_(24-24)≒74℃ day (see, Table-1). (3) In the cases of HD′_(18-18), HD′_(16-16), HD′_(14-14), HD′_(12-12), HD′_(10-10), HD′_(5-5) and CD′_(24-24), the annual mean heating and cooling day in the season were distributed about 238, 210, 182, 166, 146, 107 and 45 days. (4) Monthly mean heating and cooling degree-day (℃-day) were shown as Table-2. (5) The isolines of the distributed mean heating and cooling degree-day according to the base temperature were plotted as shown Fig. (1)∼(7).

장기 혈액투석 환자에서 합병된 혈색소증 1 예

김건호,이옥재,신원호,심대석,류경렬,김건용,황일용 대한내과학회 1993 대한내과학회지 Vol.45 No.5

Secondary hemochromatosis is primarily a consequence of the treatment of the anemia of long term hemodialysis patients with frequent blood transfusions, seldom a result of oral or parentral iron therapy. Clinically, iron overload may be a serious problem for some maintenance hemadialysis patients and may be manifested by organ dysfunctions. Diagnosis of iron overload can be established by serum ferritin determination, liver biopsy or bone marrow examination, which correlates closely with total body iron stores. It is important to early detect the iron overload and to ristrict blood transfusions or iron therapy in these patients. We present secondary hemochromatosis in a long term hemodialysis patients with 140 pints blood transfusions for 5 years, confirmed by serum ferritin level, HLA (human leukocyte antigen) test and liver biopsy. We are treating this patient with recombinant human erythropoietin (EPO) in order to reduce the frequency of blood transfusions.

낙엽송 집성제의 bolt, drift pin 직경에 따른 접합내력 성능 평가

김건호,홍순일 韓國木材工學會 2006 한국목재공학회 학술발표논문집 Vol.2006 No.-

산업 종사자 안전 강화를 위한 다기능 안전 헬멧 기반 중앙감시 플랫폼 프로토타입 개발

김건호,이홍제,윤성욱,남경원 대한의용생체공학회 2021 의공학회지 Vol.42 No.2

Purpose: In this study, we proposed a multi-functional safety helmet-based central monitoring platform to improve the safety of industrial workers. Materials and Methods: The manufactured prototype safety helmet contained sensors to detect heart rate, body temperature, wearing state, movement state and shock state. Implemented HTML-based central monitoring platform receives real-time measurements from the helmet via a wifi network, stores data into the SQL table, and displays real-time and historical data of the measurements using chrome web browser. Results: Experimental results showed that heart rate measurements of the helmet were 29.37 ± 0.49 bpm, 59.50 ± 0.51 bpm and 159.57 ± 1.41 bpm when the setting of the utilized ECG simulator was 30, 60 and 160 bpm. Temperature measurements of the helmet were 29.26 ± 0.43 °C, 30.67 ± 0.40 °C, 31.35 ± 0.33 °C, 34.01 ± 0.23 °C, 35.27 ± 0.16 °C, 36.12 ± 0.30 °C, 39.43 ± 0.23 °C and 41.74 ± 0.35 °C when the measurements of the reference temperature sensor were 30, 32, 34, 36, 38, 40, 42 and 44 °C, respectively, and the linear regression [Y = AX + B; A = 0.873, B = 0.412, R2 = 0.972] was applied to the measurements to reduce sensor error. In addition, the implemented automatic black-out detection algorithm showed almost 100% accuracies during the experiments. Conclusion: Based on these experimental results, we expect that the proposed central monitoring platform showed the possibility to improve the safety of industrial workers, although more dedicated monitoring functions should be added to the current prototype system in future studies.

한국 건설산업의 선택과 미래 비전 구상

김건호 한국주택협회 2003 주택과 사람들 Vol.153 No.-

급성 저음역 감각신경성 난청에서 호중구-림프구 비율 및 혈소판-림프구 비율의 의의

김건호,김병훈,이승열,정재호,변하영,이승환 대한이비인후과학회 2020 대한이비인후과학회지 두경부외과학 Vol.63 No.12

Background and Objectives Acute low tone sensorineural hearing loss (ALHL), an acuteonsethearing loss limited to low tone, was thought to be a subtype of sudden sensorineural hearingloss (SSNHL) but also considered as new disease entity because it shows quite different symptoms,progress, and prognosis. More recently, however, it is thought that SSNHL results fromchronic inflammation and thrombosis. Some studies have reported that neutrophil-to-lymphocyteratio (NLR) and platelet-to-lymphocyte ratio (PLR) were high in SSNHL patients, and thatthey were significant as prognostic factors. The aim of this study was to evaluate the significanceof NLR and PLR in ALHL. Subjects and Method From January 2009 to June 2019, we retrospectively studied 58 patientswho were diagnosed with ALHL. Characteristics of patients such as sex, age, symptomsand signs, the results of serologic test and pure tone audiometry were evaluated for recoveryand for recurrence. Also, we selected 58 people with the same age as control group. Results A total of 167 patients were identified, of whom a half was diagnosed with ALHL andthe other half with were the control group. Among the 58 patients, the mean age was 38.0±14.5years old, and 10 (17.2%) patients were male and 48 (82.8%) patients were female. Among thepatients, 35 (60.3%) were hospitalized and 23 (39.7%) were outpatients. For recovery, 38 (65.5%)patients fully recovered while 11 (19.0%) partially recovered, and 9 (15.5%) did not recover. Additionally,16 (27.6%) patients recurred later with similar symptoms. Between the patient groupand control group, there were significant differences in the total white blood cell count, neutrophilcount, NLR and PLR (p=0.015, 0.001, 0.002, and 0.025), but there was no significant differencesbetween the recovery group and non-recovery group in any laboratory findings. Also, NLRand PLR showed no significant differences between the recurred group and non-recurred group. Conclusion NLR and PLR in ALHL patients were relatively high compared to the controlgroup, but there were no significant differences between the recovery group and non-recoverygroup. Furthermore, there was no correlation between NLR and PLR with recurrence. HighNLR and PLR values in ALHL patients might reflect its inflammatory etiology, but there is lackevidence for them to serve as prognostic factors.

안전기능전개에 대한 연구

김건호,이강복,강경식 대한안전경영과학회 2003 대한안전경영과학회 학술대회논문집 Vol.2003 No.11

FMEA를 활용한 사고형태 영향분석에 관한 연구

김건호,김윤성,권상면,이강복,박주식,강경식 대한안전경영과학회 2004 대한안전경영과학회지 Vol.6 No.1

The modem industrial society is developing while growing more diverse and gigantic. Accordingly, occupational injuries or accidents can be caused in various situations, not just in the limited range of workplaces but also in the surroundings, and interest has increased in the prevention of occupational accidents with respect to occupational health and safety, and environment. Thus, this thesis will consider 4MlE (Man, Machine, Method, Material, Environment) as the fundamental causes of accidents and introduce a model of system in which the output of the process control system is replaced by accidents with its input by 4M1E. Furthermore, it will demonstrate how occupational hazardousness can be measured, whereby it can also be rated, by examining the relationship between 4M1E and types of accident in terms of the categories of severity, frequency, and detectability, based on the application of the model to the framework of FMEA.

ARUPS를 이용한 Si(111) - 7×7 표면과 RDE 방법으로 Si(111) 표면 위에 성장시킨 β - FeSi₂의 전자구조

김건호,임태균,박정환,김현수,이정주,강정수,홍재화,정재인 한국진공학회 1997 한국진공학회 학술발표회초록집 Vol.- No.-

양극산화 방법으로 제조한 P와 Ca가 도핑된 TiO2 나노튜브 박막

김건호,이정주,조성암 한국물리학회 2014 새물리 Vol.64 No.7

In this study, highly-ordered TiO2 nanotube (TNT) arrays were fabricated by using electrochemical anodization of Ti-foil in ethylene glycol electrolytes containing 0.4 wt% ~ 1 wt% NH4F and about 2 vol% H2O. Sodium glycerophosphate (0.3 mol%) and calcium acetate (0.02 mol%) were added in the electrolyte as Ca- and P- doping sources. Anodization was carried out at current density of about 20 to 150 mA/cm² for about 30 to 120 min. Well-ordered TNT arrays with average diameters from 50 to 120 nm and lengths from about 0.3 to about 1.5 μm were fabricated. The anatase TiO2 phase was formed by annealing at 400℃, it was changed to the rutile TiO2 phase by annealing at 600℃ and it was transformed to the rutile phase completely by annealing at 800℃. Energy dispersive X-ray spectroscopy (EDS) and X-ray photoelectron spectroscopy (XPS) analyses showed that the overall doping level of P was 2.2 ~ 4.6 at% and that of Ca was 5.8 ~ 6.8 at%. We believe that our method for fabricating Ca- and P- doped TNT arrays on Ti plates is an effective method and is applicable to the development of TNT-based dental implants. 약 2 vol%의 물을 포함한 ethylene glycol에 약 0.4 wt% ~ 1 wt%의 NH$_{4}$F를 용해시킨 다음 0.3 mol%의 sodium glyeorophosphate 및 0.02 mol% calcium acetate를 첨가한 용액을 사용하여 양극산화 방법으로 P와 Ca가 도핑된 TiO2 나노튜브 박막을 제조하였다. 전류밀도 20 mA/cm² ~ 150 mA/cm²에서 30분에서 120분간 성장시켜 직경 50 nm~150 nm 범위, 길이 약 0.3 ~m ~ 1.5 μm에 이르는 나노튜브 array를 형성하였다. 형성된 나노튜브 array는 비정질이었으나 400℃에서 열처리함에 따라 anatase 상, 그리고 600℃ 이상의 온도에서 rutile 상으로 상전이하였으며, 800℃ 이상에서는 완전히 rutile 상으로 전이되었다. 에너지 분산 X-선 분광법 (EDS)과 광전자 분광법 (XPS)을 통해 나노튜브 내에 약 2.2 at% 에서 4.6 at%의 P와 5.8 at%에서 6.8 at%의 Ca이 도핑되어 있음을 확인하였다. 제작된 TiO$_{2}$ 나노튜브 어레이는 직경, 길이, 치밀도 그리고 상 (phase) 등 치과용 Ti 임플란트에 적용할 수 있을 것으로 기대되는 구조적 특성을 지니고 있었다.