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GC물질을 코팅한 QCM가스센서의 가스검출 및 열화특성에 관한 연구
장경욱 경원전문대학 2000 論文集 Vol.22 No.-
In recognition of the gases using the quartz crystal microbalance (QCM) coated with the film materials, it is important to obtain the recognition ability of gases, and the stability of film coated above the QCM. Especially, the thickness of film coated above the QCM is decreased according with the using circumstance and time of QCM gas sensor. Therefore, the sensing chararcteristics of film is changed with these. In this paper, we coated the lipid GC materials varing with the blended amount of PVC (Poly Vinyl Chloride) and solution (Tetra Hydrofan:THF) above QCM to obtain the stability of lipid PC film. QCM gas sensors coated with film materials were measured the frequency change in the chamber of stationary gas sensing system injected 1-hexane, ethyl acetate, ethanol and benzene of 20㎕, respectively. Also, we measured the degradation characteristics of QCM gas sensor to show the properties of stability.
장경욱 동양대학교 1999 동양대학교 논문집 Vol.5 No.1
This thesis aims to clarify the integrity of Whitman's consciousness, chasing after the various journey images in his poems. Whitman, one of the best American Renaissance poets, has been praised as the advocator of American democracy. But the democracy he tried to achieve did not have political significance only. It was a name for a new way of life. The democracy Whitman searched for was a state where human beings could live without inequality, torment, and persecution. So he needed a vision to include all races of men, heal all kinds of illness, and bridge all ruptures between man and man. The poetic self in Whitman's poems is the researcher for this new vision. And his poems are the records of the journey where the 'self' tries to get a new vision. On the road to this new vision, he calls upon all things his self could rely on. Those include death, nature, time and memory. At last he could achieve his own vision named as a democracy. But the problem was that he could not assure whether his vision was only an illusion or not. That constitutes a peculiar symmetry in his poems. This symmetry is broken when he shows too much confidence in his vision or when he lose that confidence. His later poems result from his skepticism about his poetic vision. Nevertheless, the brave journey Whitman went on was the genuine achievement in the modern history.
팔체질침을 이용한 반월판 관절경부분절제술 환자의 치험례
강영화,김성욱,손인석,서정철,윤현민,장경전 동의대학교 한의학연구소 2001 동의한의연구 Vol.5 No.-
슬관절은 지속적인 압력을 받거나 충격때문에 동작범위의 한계에 이를 때 손상받기 쉽다. 반월판 파열 환자는 일상생활에 지장을 주는 동통, 정복되지 않는 잠김, locking이나 giving way가 자주 일어나는 경우, 지속적인 신전제한이 있을 때 수술의 적응증이 된다. 반월판 파열 환자의 재활에 있어서 관건은 대퇴사두근의 근력과 ROM의 회복이다. 팔체질침 시술후 반월판 부분절제술을 시행한 환자가 동통의 강도와 동통 재발의 감소, ROM의 개선, 전반적 상태면에서 체침이나 MPS 시술 때보다 더 나은 경과를 얻었다. Knee joints are apt to be injured when they are over the limit of ROM by continuous pressure or impact. The patient of meniscus tear has to be operated in case that he has the symptom of knee pain obstructive to daily life, unreducable locking, frequent locking or giving way, continuous extention limit. In the rehabilitation of the patient of meniscus tear, the key is the progress of musculi quadratus femori's power and ROM. After 8 constitutional acupucture therapies, partial menisectomy patient has the better process about decrease of pain intensity and relapsing pain frequence, development of ROM, general condition more than general acupucture or MPS medical treatment.
송도미,이승희,신연욱,장혜경,오경숙,전현 효성여자대학교 가정대학 학도호국단 1984 家政大論集 Vol.3 No.-
This study given here presents the results of an experimental investigation of the iron contents contained in the city water which not used for a long time in the winter. The measurements were performed after turning on and for flowing water in a moment. And the quantitative analysis was studied by chemical form and the results were as follows. 1. The content of the ferrous ion was 113.8-14.4 ppm, water soluble iron was 22.5-14.4 ppm and acid soluble iron was 150-10 ppm. 2. Iron contents of the each chemical from gradually reduced but it appeared high value than standard value of city water until five minutes.
虹彩 體質 分析에서 心腎結合組織의 虛弱 體質과 高血壓 家族歷과 관련성 硏究
金鐘牛,黃祐準,琴坰樹,李始炯,李宗淳,都金錄,趙在運,趙州掌,金鐘煜 한국전통의학연구소 2002 한국전통의학지 Vol.12 No.1
Iridology, developed more than 100 years ago, is the diagnosis of medical conditions through noting irregularities of the pigmentation in the iris The purpose of this study is to compare interrelation between CVA, hypertension family history and cardio-renal connective tissue in Iris Constitution through iris constitution examination. The subjects consist of 114 patients who were examined in Iris Constitution at Chonju Oriental Medicine Hospital attached to Wonkwang Univ. from September. 1St. 2000 to August. 31th. 2002. 1. In the distribution of Iris Constitution, among of 79cases, There are neurogenic type 13cases, abdominal connective tissue weakness constitution 31 cases, cardio-renal connective tissue weakness constitution 6 cases, cholesterol 7 cases and others 22 case in control group. 2. There are familial history of CVA and hypertention 32 cases, no familial history of CVA and hypertention1 3 cases, in 35cases of experimental group. These results imply that there is meaningfulness of interrelation between cardio-renal connective tissue weakness constitution and. CVA, hypertention.
18–30세 사이에 발생하는 뇌경색의 특징, 다기관 레지스트리 연구
장윤경,송태진,김용재,허지회,이경열,김영은,장민욱,조수진,강석윤 이화여자대학교 의과학연구소 2017 EMJ (Ewha medical journal) Vol.40 No.3
Objectives: Although there have been several reports that described characteristics for young age stroke, information regarding very young age (18–30 years old) has been limited. We aimed to analyze demographic factors, stroke subtype, and 3-month outcome in acute ischemic stroke patient who have relatively very young age in multicenter stroke registry. Methods: We evaluated all 122 (7.1%) consecutive acute ischemic stroke (within 7 days after symptom onset) patients aged 18 to 30 from 17,144 patients who registered in multicenter prospective stroke registry, 1997 to 2012. Etiology was classified by Trial of Org 10172 in Acute Stroke Treatment criteria. Stroke severity was defined as National Institutes of Health Stroke Scale (NIHSS) and stroke outcome was defined by modified Rankin scale (mRS) at 3 months after index stroke. Results: The mean age of all included patients was 25.1±3.7 years and 76 patients (62.2%) were male. The median NIHSS at admission was 4. Considering stroke subtype, 37 patients (30.3%) had stroke of other determined etiology (SOD), 37 (30.3%) had undetermined negative evaluation (UN) and 31 (25.4%) had cardioembolism (CE) were frequently noted. After adjusting age, sex and variables which had P<0.1 in univariable analysis (NIHSS and stroke subtype), CE stroke subtype (odds ratio, 4.68; 95% confidence interval, 1.42–15.48; P=0.011) were significantly associated with poor functional outcome (mRS≥3). Conclusion: In very young age ischemic stroke patients, SOD and UN stroke subtype were most common and CE stroke subtype was independently associated with poor discharge outcome.
장경욱 ( Kyung-uk Jang ) 한국전기전자재료학회 2023 전기전자재료학회논문지 Vol.36 No.4
Recently, as power and electronic devices have increased in frequency and capacity, it has become a major concern to protect electronic circuits and electronic components used in these devices from abnormal voltages such as various surges and pulse noise. To respond to variously rated voltages applied to power electronic devices, the rated voltages of various varistors can be obtained by controlling the size of internal particles of the varistor or controlling the number of layers of the varistor. During bonding, the problem of unbalanced thermal runaway occurring between the electrode and the varistor interface causes degradation of the varistor and shortens its life of the varistor. In this study, to solve the problem of unbalanced heat distribution of stacked varistors to adjust the operating voltage, the contents of the ZnO-based varistor composition were 96 wt% ZnO, 1 mol% Sb<sub>2</sub>O<sub>3</sub>, 1 mol% Bi<sub>2</sub>O<sub>3</sub>, 0.5 mol% CoO, 0.5 mol% MnO, and 1 mol% TiO<sub>2</sub>. A multi-layered ZnO varistor was modeled by bonding a single varistor with a composition in three layers according to the operating voltage. The thermal distribution of the triple-layered ZnO varistor was analyzed for the thermal runaway phenomenon that occurred during varistor operation using the finite element method according to Comsol 5.2.