• 로봇학회논문지
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• 제8권4호
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• pp.273-282
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• 2013

The purpose of this study was to investigate effect of robot-assisted hand rehabilitation(Amadeo(R)) on hand motor function in chronic stroke patients. This study used a single-subject experimental design with multiple baselines across individuals. Three chronic stroke survivors with mild to sever motor impairment took part in study. Each participants had 2 weeks interval of starting intervention. Participants received robot-assisted therapy(45min/session. 3session/wk for 6wks). Finger active range of motion(AROM) was assessed by Range of Assessment program in Amadeo(R), and test-retest reliability was verified using Pearson correlation analysis. To investigate effect of Amadeo(R), finger AROM was measured immediately after each sessions and Fugl-Meyer Assessment of Upper extremity, Motor Activity Log, Nine hole peg board test and Jebsen-Taylor hand motor function test were assessed at pre-post intervention. Results were analyzed by visual analysis and comparison of pre-post tests. The test-retest reliability of Range of Assessment was good(r=.99). After robot-assisted therapy, finger AROM of participant 1, 2, and 3 was respectively improved by 18%, 3.6%, and 6% each. Hand motor function of participant 1, 3 was improved on all four tests, but not effect in participant 2. Robot-assisted hand rehabilitation could improve finger AROM and effect on hand motor function in chronic stroke patients.

• The Plant Pathology Journal
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• 제19권3호
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• pp.148-151
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• 2003

Seeds of broomrape (Orobanche cernua) were exposed to 0, 25, 50, 75, and 100 mM NaCl solutions during their preconditioning period (14 days of moisture) under laboratory conditions and induced to germinate by synthetic germination stimulant (GR24). There was significant reduction in seed germination with increased salt concentration as shown in 35.2, 32.5, 23.6, 14.3, and 9.2% germination, respectively. Exposure of Orobanche cernua seeds to 0.0, 1.0, 1.25, and 1.5 M levels of NaCl for 9 hours resulted in 29.4, 21.3, 20.5, and 17.4% germination, respectively. Water preconditioned seeds showed Heavier protein profile bands of 6.5-14.2 KDa than those of dry seeds. Seeds treated with 0.75 M NaCl showed profile similar with that of water preconditioned ones, plus an extra band at 29-36 KDa. The protein profiles of 1.0 and 1.5 M NaCl treated seeds showed weaker bands with the absence of 29-36 KDa band.

• 한국작물학회지
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• 제46권4호
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• pp.321-324
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• 2001

Tobacco seeds (Nicotiana tabacum L. cv KF109) were primed in the polyethylene glycol 6000(PEG) solution and then stored at 5 and $25^{\circ}C$ under 40, 60 and 80% relative humidity (RH) conditions for six months. The effect of storage temperature and humidity on mean germination time ($T_{50}$), longevity and germination of the primed tobacco seeds were compared. Untreated seeds (control) stored at $5^{\circ}C$ showed high germinability throughout the entire storage period and humidity, and a decline in germinability showed after 6 months at 60% RH and after 3 months at 80% RH when stored at $25^{\circ}C$, Primed seeds retained high germinability until 6 months at 60% RH and 3 months at 80% RH when stored at $5^{\circ}C$ but showed a significant decline in germinability after 3 months at 40% RH, and 1 months at 60% and 80% RH, respectively when stored at $25^{\circ}C$, Primed seeds were completely lost viability when stored at $25^{\circ}C$ under 60% RH for 6 months and under 80% RH for 3 months.

• 폴리머
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• 제33권6호
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• pp.515-519
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• 2009

생분해성 고분자인 poly((R)-3-hydroxy butyrate)와 poly(ethylene glycol)을 결합시켜 양친성 이중블록 공중합체를 형성하었고, 표적인자인 folate를 수식하여 특정 암세포에 표적화하도록 설계하였다. 이 공중합체는 수용액상에서 미셀을 이루며, DLS로 측정한 결과, 125~156 nm의 크기였고, 동결건조하여 SEM으로 관찰한 결과 구형임을 확인하였다. 여기에 소수성 약물인 griseofulvin을 사용하여, 35~56%의 봉입률을 나타내었다. 약물은 in vitro상에서 24시간 동안 지속적으로 방출되었다. 세포생존율을 측정하여, folate가 수식된 입자가 그렇지 않은 입자보다 약 10% 더 낮은 세포생존율을 보임으로써 표적지향 효과가 있다는 것을 알 수 있었다.

• 정보처리학회논문지A
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• 제13A권3호
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• pp.185-190
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• 2006

JPEG 2000 알고리즘은 기존의 정지영상 압축 PEG 알고리즘에서 발생하는 블록화 현상의 문제점을 해결하였지만, 압축 율과 이미지 복원율을 높이기 위한 과정이 복잡해 졌고 부동소수점의 연산 시간이 많이 걸리는 단점을 가지고 있다. 이 단점을 보완하기 위하여 본 논문은 JPEG 2000 알고리즘의 부동소수점 연산이 많은 필터 부분을 하드웨어로 구현하였다. 이 DWT Filter[1] 칩은 Daubechies 9/7 filter[6]을 기반으로 설계되었고 성능과 크기(반도체 숫자)를 최적화하기 위해서 3 단계 파이프라인 시스템으로 구성되었다. 본 논문에서 설계한 Filter는 소프트웨어로 구현된 것보다 부동 소수점의 연산에서 7배 정도 성능이 향상되었다.

• Membrane and Water Treatment
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• 제13권2호
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• pp.105-110
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• 2022

Al₂O₃ positively charged nanofiltration composite membrane was successfully prepared with aluminate coupling agent (ACA) as modifier, sodium bisulfite (NaHSO₃) and potassium persulfate (K₂S₂O₈) as initiator and methacryloyloxyethyl trimethylammonium chloride (DMC) as crosslinking monomer. The surface of the membrane before grafting and after polymerization were characterized by SEM and FT-IR. Three factor and three-level orthogonal experiments were designed to explore the optimal conditions for membrane preparation, and the optimal group was successfully prepared. The filtration experiments of different salt solutions were carried out, and the retention molecular weight was determined by polyethylene glycol (PEG). The results showed that the polymerization temperature had the greatest effect on the rejection rate, followed by the reaction time, and the concentration of DMC had the least effect on the rejection rate. The rejection rates of CaCl₂, MgSO₄, NaCl and Na₂SO₄ in the optimal group were 83.8%, 81.3%, 28.1% and 23.6% (average value), respectively. The molecule weight cut-off of 90% (MWCO) of the optimal group was about 460, which belongs to nanofiltration membrane.

• 생물환경조절학회지
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• 제24권1호
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• pp.13-20
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• 2015

본 실험은 단기간 ABA처리가 토마토 묘의 생장과 증산율, 기공 저항성 및 건조 내성에 미치는 영향을 검토하기 위하여 수행되었다. 실험은 25일간 플러그 트레이에서 육묘한 토마토 묘를 간이 수경재배 키트에 이식하여 양액 육묘하면서 ABA처리 효과와 건조 내성을 검토하였다. 배양액에 ABA를 0.5, 1, 2, 및 $3mg{\cdot}L^{-1}$의 농도로 첨가한 4개의 처리구와 무처리구를 설계하여 5일과 10일간 양액육묘한 뒤 묘소질, 엽온, 증산율, 기공확산 저항성을 측정하였다. 건조 내성을 검토하기 위한 수분 스트레스 처리는 PEG 8,000을 이용하여 -5bar로 조정한 고삼투압 용액에 ABA처리 직후의 묘를 이식한 뒤, 묘의 위조 정도를 조사하였다. 저농도(0.5와 $1mg{\cdot}L^{-1}$)의 ABA처리구에서 묘소질은 경경을 제외하고 대부분의 생육에서 통계적 유의차는 나타나지 않았으나, 2와 $3mg{\cdot}L^{-1}$의 농도에서는 지상부의 생장이 억제되었다. 근권부의 생장은 $1mg{\cdot}L^{-1}$의 농도처리에서만 뿌리의 건물중과 생체중, 전표면적, 근장, 근경, root tip수 모두가 유의적으로 증가하였으며, 그 외의 처리농도에서는 일부의 생육지표를 제외하고는 유의적 차이가 나타나지 않았다. ABA처리 농도가 증가함에 따라 기공확산 저항성은 증가하고 증산율은 감소하는 경향을 보였다. 또, ABA처리는 묘의 건조 내성을 증가시켜 ABA가 첨가된 배양액에서 5일 또는 10일간 육묘한 묘를 -5bar 용액에 치상하였을 경우 대조구는 치상후 10시간 후부터 묘의 위조가 시작되어 20시간 후에는 모든 개체가 위조하였으나, ABA처리구는 치상 30시간 후부터 위조가 시작되어 50시간이 경과해서야 모든 개체가 위조되었다. 또, 수분 스트레스처리로 위조된 묘를 재관수하였을 경우 ABA 0.5와 $1mg{\cdot}L^{-1}$처리구는 100%, 그 이상 농도 처리구에서도 50%이상 회복되었으나, 무처리구의 경우는 전개체가 고사하였다. 이상의 결과 토마토 육묘과정에서 저농도의 ABA처리를 통한 근권부의 생장 촉진과 건조 내성 증진 가능성이 시사되었으나, 상업적 활용을 위해서는 추가적인 검토가 필요할 것으로 판단된다.

• 한국응용과학기술학회지
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• 제24권2호
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• pp.99-108
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• 2007

The cosmetic and toiletries are necessary health care & household for common life. However we need antiseptic which is effecting harmlessly to the human body. There are propolis, Lavender, Lemon, essential oil in the natural antiseptic materials. This work proceeded design Natural-antiseptic system with three materials as above-mentioned. Natural-antiseptic system was accomplished with propolis (2%), Lavender essential oil (0.3%), Lemon essential oil (0.3%) safety out of Polysorbate 20 (0.5%), Polysorbate 80 (0.5%), PEG (60) hydrogenated castor oil (0.45%), ethanol (5%). The antimicrobial test was experimented on E. coli and Bacillus stearothermophilus. In this antimicrobial test, we found that the effect of antisepsis against E. coli and Bacillus stearothermophilus with propolis 0.3%, Lavender essential oil 0.045% and Lemon essential oil 0.045% was improved. Therefore could expect Natural-antiseptic system product for moisturizing skin toner for face, nourishing essence and wet tissue for clean other things.

• 한국염색가공학회지
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• 제26권3호
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• pp.209-217
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• 2014

Detergency and soil redeposition of wool fabric in drycleaning solvents, i.e. petroleum solvent, perchloroethylene (PCE), decamethylcyclopentasiloxane($D_5$), with commercial detergents were studied. The detergency of wool soiled cloth in drycleaning solvents without detergents were the order of PCE > petroleum solvent > $D_5$. When commercial detergents were added to the system, the detergency were greatly improved. When 1.0% water was added to solvents/commercial detergents system, the detergency of petroleum solvent and PCE improved whereas that of $D_5$ decreased. The soil redeposition prevention effects of solvents were the same order of detergency, i.e. PCE > petroleum solvent > $D_5$. When commercial detergents were added to the system, the soil redeposition changed depending on solvents and detergents. The soil redeposition in $D_5$ became higher with a commercial detergent, therefore it is important to develop appropriate detergents for $D_5$. Three silicone surfactants were tested for detergency and soil redeposition in $D_5$ to find candidate surfactants for drycleaning detergent formulations. Silicone surfactant PEG/PPG-19/19 Dimethicone was found to be the best surfactant for $D_5$ drycleaning detergents.

• 한국응급구조학회지
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• 제24권2호
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• pp.89-97
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• 2020

Purpose: In this study we aimed to manufacture and evaluate an oral disintegrating film containing ibuprofen. Methods: Optimal oral ventilation was manufactured using ibuprofen 3g, polyvinyl alcohol #500 4.2g, HPMC K 100M 1.6g, glycerol 4g, TWEEN #20 0.3g, PEG #20 0.3g, citric acid 0.5g, sucralose 0.1g, ethamol 10mL, and distilled water 30mL. Results: Film mass ranged from 110 to 130mg in all prescriptions, showing general uniformity while the water content ranged from 6 to 12%. Measurement of ibuprofen content in all manufactured film solutions averaged 100.12% (98.0-102.0%). The elution test predicted the time taken from the body and the film agent of all prescriptions was released 100% within 5 minutes to confirm the rapid elution. Conclusion: Based on the results of all test, prescription E was proved to be the most suitable.