일측성 성대마비 환자에서 Artecoll을 이용한 성대주입술의 효과 및 안전성

오재원,이승원,김민범,윤영선,김관민,손영익,Oh Jae-Won,Lee Seung-Won,Kim Min-Beom,Yun Young-Sun,Kim Kwan-Min,Son Young-Ik 대한후두음성언어의학회 2005 대한후두음성언어의학회지 Vol.16 No.2

Background and Objectives : Artecoll(R) is an injectable soft tissue filler, which is a suspension of polymethylmethacrylate microspheres in $3.5\%$ bovine collagen solution. The authors aimed to determine the clinical of Artecoll of Artecoll(R) as an injection material into the vocal fold to correct the glottal insufficiency caused by unilateral vocal cord paralysis. Materials and Methods : Forty-one consecutive patients with unilateral vocal cord paralysis received percutaneous Artecoll injections under local anesthesia. Acoustic, aerodynamic and stroboscopic analyses were prospectively provided before, 1 week and 3 months after injection. Perceptual GRBAS grading by speech language pathologists and subjective ratings of the hoarseness and aspiration by the patients were also obtained. Results : Aerodynamic parameter(maximal phonation time) were significantly improved after the injection (p<0.05). Acoustic parameters (jitter and shimmer) were improved at the 3rd month follow-up. GRBAS uading and patients own subjective scaling of hoarseness and aspiration also showed significant improvement (p<0.05). Early or delayed significant side effects were not observed. Conclusion : Vocal fold injection with Artecoll is a convenient, safe and useful method of temporarily correcting the glottal insufficiency. Further long-term follow-up studies will answer the usefulness and safety of the Artecoll injection laryngoplasty.

非對稱 Carbenoid 反應

吳在元 大田開放大學 1985 論文集 Vol.2 No.-

電解液 濃度變化에 따른 鉛蓋電池의 容量特性에 관한 硏究

吳在元 大田開放大學 1985 論文集 Vol.3 No.-

It is well known that the capacity of a lead-acld battery varies greatly with the change in the concentration of Its electrolyte, and studies were thus made of the relation between electrolyte concentration and capacity, In conjunction with the effects of positive and negative plates, the kinds of plates, discharge current densities and changes In electrolyte concentration during discharge. The results of these studies were discussed, taking into considerations the results of surface observation and specific surface area measurements of the plates. It was thus determined that lead-acid battery capacity was dependent not simply on the concentration, but also related to factors mentioned above. Specifically, during discharge the lead sulfate crystals were smaller, the higher the electrolyte concentration and the discharge current density, while electrolyte diffusion was insufficient when the concentration was too low both of factors adversely affecting battery capacity. Thus, it was found that there is an electrolyte concentration which will yield the maximum capacity under each combination of conditions.

乳化型 液膜을 利用한 銅 電解 廢液中의 Ni(Ⅱ) 回收에 관한 硏究(Ⅰ)

오재원 大田産業大學校 1995 한밭대학교 논문집 Vol.12 No.0202

This experimental investigation was performed for the recovery of Ni(Ⅱ) in the external aqueous phase in terms of novel liquid surfactant membrane(w/o/w emulsion type) by employing the carrier mediated counter transport mechanism in a batch operation. In this experiment PC88A, Span80, Kerosene and H_2SO_4 were used as a extractant(carrier), a surfactant, a solvent(membrane) and a stripping reagent respectively. From the results of this study, the following were drawn as a conclusion. (1) The extent of extraction increased with an increase in the concentration of Ni(Ⅱ), and the recovery efficiency of Ni(Ⅱ) increased with increasing the concentration of Ni(Ⅱ), and the recovery efficiency of Ni(Ⅱ) was achieved when the sulfuric acid concentration was 1 N. The optimum condition for the Ni(Ⅱ) extraction was as follows: Intial Ni(Ⅱ) concentration : 300 ppm. H_2SO_4 concentration :1 N PC88A concentration 10% by volume Within the experimental condition of this study (2) The optimum condition for the stability of liquid sufactant membrane and the separation of Ni(Ⅱ) was as follows: Span 80 concentration : 4% by volume. Liquid paraffine concentration : 3% by volume. Stirring speed 3,000rpm (3) In the above optimium condition, the recovery efficiency of Ni(Ⅱ) was above 80% within 15minutes from 300 ppm Ni(Ⅱ) aqueous solution. (4) Liquid membrane was Protected enoughly from the breakage by the addition of Span 80(4 Vol.%) and liquid paraffin(3 vol.%) in the kerosene membrane.

TRIZ를 활용한 설계AE의 효율적 추진방안

오재원,김광수 한국품질경영학회 2011 한국품질경영학회 학술대회 Vol.2011 No.2

Dry-charged Positive Electrode의 乾燥方法에 따른 電位變化

吳在元 大田工業專門大學 1983 論文集 Vol.33 No.-

This experiments was carried out to improve the Cranking Power of dry-charged Lead-Acid Battery for automobile. The cranking Power depends upon the potential and duration time of positive electrode and it is high when tile potential is high, the duration time long. The results obtained from this experiments, are summarized as follows: 1. The potential and duration time of positive electrode is much more influenced by the dry method. 2. High temperature and humidity is caused of falling the potential and duration time of positive electrode. 3. The dry method which use the dry tunnel with the chain conveyor is the best way to dry the positive electrode. 4, The potential and duration tunnel is comparatively high and stable when the positive electrode is dried within 30 minitues. Plate interval 2-3cm and the hest drying temp. of plate is 140℃ which is not exceeded in critical humidity range. 5. The dry method of positive electrodes on the dry tunnel is possible to produce in large quantities by the contineous of conveyor system.

高濃度電解液領域에 있어서 鉛蓄電池의 諸特性에 關한 硏究

吳在元 大田開放大學 1986 論文集 Vol.5 No.-

Battery capacity increased and decreased with rise and falls in battery temperature, the rate of change becoming higher with higher electrolyte concentration. The rate for negative electrodes was higher than that for positive electrodes. The self-discharge rate for negative electrodes was higher than that for positive electrodes, and was extremely high for both electrodes in electrolytes with a specific gravity of above 1.45 (20℃). Battery life was reduced as electrolyte concentration increased, becoming extremely short as the specific gravity of the electrolyte exceeded 1.30-1.35 (20℃). This was mainly due to softening of positive active material which occurred early in the cycling life test. Other factors in the electrode manufacturing process that might be considered to influence battery life were also studied, including the kind of lead oxides, the amount of sulfuric acid for pasting, and conditions of electrode curing after pasting, but their influences were found to be negligible.

소아 알레르기 유발 가능성과 화분(꽃가루)농도와의 관련성

오재원,강임주,김성원,국명희,김봉성,정지태,이하백 대한 소아알레르기 호흡기학회 2009 Allergy Asthma & Respiratory Disease Vol.19 No.1

Pollinosis is one of the allergic diseases which caused by airborne pollens from allergic plants, such as allergic rhinitis, asthma, and allergic conjunctivitis. The distribution of pollens in the air is fully related to weather condition, especially temperature and humidity, etc. This study is focused on the evaluation of the relation between pollen count and the outbreak of allergic diseases (symptom index) from allergic patients in Korea and this data would be necessary to evaluate Korean own allergy index for pollen forecasting system. Airborne particles carrying allergens were collected daily from nationwide 8 stations (Seoul, Guri, Daejeon, Daegu, Kwangju, Busan, Kangneung, and Jeju) by using 7 days-Burkard sampler (Burkard Manufacturing Co Ltd, Hertfordshire, UK) for 10 year in South Korea (March 1, 2008-October 30, 2008). They were counted and recorded along with the weather factors. Symptom index was evaluated and recorded by calling to allergic patients daily. Airborne pollen has two peak seasons that is May and September in Korea. The peak season for mold was June. There was the tree pollen seasons from the middle of February to late July, then followed during the grasses and weed season from the middle of July to the end of October. Ragweed was one of the most common pollen of autumn in Korea. In skin prick test, Ragweed was the highest sensitization rate (5.9%), followed by Mugwort (5.8%), alder (4.9%), birch (4.8%), oak grasses among the pollen extracts in Korean school aged children. Ragweed pollen counts were gradually increased since 2000. In same period, sensitization rates for airborne pollen, especially weeds in Korean children were increased annually (1999: 4.4%, 2000: 7.1%, 2001: 7.4%, 2002: 8.5%, 2003: 7.7%). There are significantly related between symptom index from allergic patients and allergic pollen concentrations. Sensitization rates for pollens are increased in Korean children with age. There are significantly related between symptom index from allergic patients and allergic pollen concentrations. Risk Grade of pollen for allergy pollen forecast among each allergic plant was established and still remain to confirm it. Pollinosis is one of the allergic diseases which caused by airborne pollens from allergic plants, such as allergic rhinitis, asthma, and allergic conjunctivitis. The distribution of pollens in the air is fully related to weather condition, especially temperature and humidity, etc. This study is focused on the evaluation of the relation between pollen count and the outbreak of allergic diseases (symptom index) from allergic patients in Korea and this data would be necessary to evaluate Korean own allergy index for pollen forecasting system. Airborne particles carrying allergens were collected daily from nationwide 8 stations (Seoul, Guri, Daejeon, Daegu, Kwangju, Busan, Kangneung, and Jeju) by using 7 days-Burkard sampler (Burkard Manufacturing Co Ltd, Hertfordshire, UK) for 10 year in South Korea (March 1, 2008-October 30, 2008). They were counted and recorded along with the weather factors. Symptom index was evaluated and recorded by calling to allergic patients daily. Airborne pollen has two peak seasons that is May and September in Korea. The peak season for mold was June. There was the tree pollen seasons from the middle of February to late July, then followed during the grasses and weed season from the middle of July to the end of October. Ragweed was one of the most common pollen of autumn in Korea. In skin prick test, Ragweed was the highest sensitization rate (5.9%), followed by Mugwort (5.8%), alder (4.9%), birch (4.8%), oak grasses among the pollen extracts in Korean school aged children. Ragweed pollen counts were gradually increased since 2000. In same period, sensitization rates for airborne pollen, especially weeds in Korean children were increased annually (1999: 4.4%, 2000: 7.1%, 2001: 7.4%, 2002: 8.5%, 2003: 7.7%). There are significantly related between symptom index from allergic patients and allergic pollen concentrations. Sensitization rates for pollens are increased in Korean children with age. There are significantly related between symptom index from allergic patients and allergic pollen concentrations. Risk Grade of pollen for allergy pollen forecast among each allergic plant was established and still remain to confirm it.

늑대의 리더뽑기

오재원 기술표준원 2008 기술표준 Vol.79 No.-

Is There Any Necessity to Prescribe Consumption of Walnuts Cooked by Different Processing Techniques to Patients With Walnut Allergy?

오재원 대한천식알레르기학회 2018 Allergy, Asthma & Immunology Research Vol.10 No.4

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