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섬유의 혼합율과 꼬임 구조가 2합 방직사의 굽힘 특성에 미치는 영향(II)-합사의 굽힘 특성-
김한성,오애경,김승진,Kim, Han-Seong,O, Ae-Gyeong,Kim, Seung-Jin 한국섬유공학회 1993 한국섬유공학회지 Vol.30 No.7
The bending propertied of the 2 folded yams such as the bending rigidity, the coercive couple, the hysteresis energy and the residual curvature with various wool/polyester blend ratios and with variations of the single and 2-folded yarns twists were stylied for analyzing twist characteristics, inter and intra frictional effects. The value of the experimental specific bending rigidity of two folded staple yarns were in the range of 1.2 and 2.5 times of the estimated values, and the experimental specific bending rigidities of 2 folded yarns divided by the power of 1.2 of its linear density were almost same as the experimental specific bending rigidities of single yarns. The experimental specific bending rigidities of the 2 folded staple yarns were found to show the maximum values in the range of the same twist between the single and 2 folded yarns with increasing 2 folded yarn twist with fixed single yarn twist. The values of the coercive couple, the residual curvature and the hysteresis energy of the 2 folded staple yarns showed almost sane tendency as that of the specific bending rigidity. Maximum bending rigidity to wool/polyester blend composition was shown around the range of same blend composition, and maximum bending recovery was also shown in this range, then coercive couple and hysteresis energy were increased with polyester colnposition.
외투세포 림프종의 세침흡인 세포학적 소견 - 1예 보고 -
김한성,박성혜,Kim, Han-Seong,Park, Sung-Hye 대한세포병리학회 2001 대한세포병리학회지 Vol.12 No.1
Cytologic features of a case of mantle cell lymphoma is presented, which was obtained by fine needle aspiration cytoloby and confirmed by excisional biopsy of axillary lymph node. A 67-year-old female alleged palpable masses in both axillae for several months. Additional multiple lymphadenopathies were found in the both neck and inguinal areas. The main cytologic feature was carpeting on monotonous slightly atypical small lymphocytes without heterogeneous components. The nuclei of these lymphocytes are slightly larger than benign small lymphocyte and relatively round with some Indentation. Nucleolus was not prominent and no mitosis was found. Their cytoplasm was scanty and cyanophilic in Papanicolaou's stain. The histiocytic cells, which had bland-looking banded nuclei and abundant cytoplasm, corresponding to pink histiocytes were shown. Excisional blopsy of lymph nodes was diagnosed as mantle ceil lymphoma, diffuse type.
Diphenylhydantoin에 의한 중증 재생불량성 빈혈
김한성 ( Kim Han Seong ),한경근 ( Han Gyeong Geun ),김종현 ( Kim Jong Hyeon ),김경환 ( Kim Gyeong Hwan ),조강일 ( Jo Gang Il ),정찬수 ( Jeong Chan Su ),정철호 ( Jeong Cheol Ho ),제영성 ( Je Yeong Seong ),임창현 ( Im Chang Hyeon 대한내과학회 1993 대한내과학회지 Vol.44 No.5
Since 1938, Diphenylhydantoin (DPH) has remained one of the most widely used anticonvulsants for treatment and prevention of seizures. DPH may induce serious damage to the hematopoietic system. Especially, DPH induced severe aplastic anemia is one of the most severe complication and its incidence is extremely rare. We recently expreienced one case of severe aplastic anemia in 52-year-old woman following administration of DPH. Litreature was reviewed briefly.
경피약물전달을 위한 아세트아미노펜 각인 기능성 전분 기반 바이오 소재 제조 및 방출 특성
김한성 ( Han-seong Kim ),김경중 ( Kyeong-jung Kim ),이시연 ( Si-yeon Lee ),조은비 ( Eun-bi Cho ),강현욱 ( Hyun-wook Kang ),윤순도 ( Soon-do Yoon ) 한국공업화학회 2021 공업화학 Vol.32 No.3
본 연구에서는 mung bean starch (MBS), polyvinyl alcohol (PVA), sodium benzoate (S), glycerol (GL), melanin (MEL)을 이용하여 광열 효과가 있는 기능성 acetaminophen (AP) 각인 MBS 기반 바이오 소재를 제조하고 약물 방출 특성을 조사하였다. 제조된 AP 각인 바이오 소재의 물리화학적 특성은 FE-SEM과 FT-IR을 통해 분석하였다. 또한, NIR (near infrared) laser (1.5 W/㎠) 조사에 따른 기능성 바이오 소재의 광열 효과 및 AP 방출 특성을 조사하였다. 바이오 소재에 NIR laser를 조사하였을 때, MEL이 첨가 바이오 소재는 첨가하지 않은 바이오 소재보다 2배 이상 높은 온도상승을 보였다. 표준 버퍼 용액과 인공 피부를 사용하여 기능성 AP 각인 바이오 소재의 AP 방출 특성 조사결과, NIR laser를 조사하였을 때, MEL 첨가 바이오 소재는 첨가하지 않은 바이오 소재보다 AP 방출율이 1.2배 높은 것을 확인하였다. 이 결과로부터, 기능성 바이오 소재는 급성 진통 치료를 위한 바이오 소재로 활용될 수 있을 것으로 판단된다. This study focuses on the preparation of acetaminophen (AP) imprinted functional biomaterials for a transdermal drug delivery using mung bean starch (MBS), polyvinyl alcohol (PVA), sodium benzoate (S) as a crosslinking agent, glycerol (GL) as a plasticizer, and melanin (MEL) as a photothermal agent. The prepared AP imprinted biomaterials were characterized using FE-SEM and their physical properties were evaluated. The photothermal effect and AP release property for functional biomaterials were examined with the irradiation of near infrared (NIR) laser (1.5 W/㎠). When the NIR laser was irradiated on functional biomaterials with/without the addition of MEL, the temperature of MEL added biomaterial increased from 25 ℃ to 41 ℃, whereas the biomaterial without MEL increased from 25 ℃ to 28 ℃. Results indicate that there is the photothermal effect of prepared biomaterial with the addition of MEL. Based on the results, AP release properties were evaluated using standard buffer solutions and artificial skin. It was found that AP release rates of MEL added AP loaded biomaterials were 1.2 times faster than those of MEL non-added AP loaded biomaterials when irradiating with NIR laser. We envision that the developed functional biomaterials can be utilized for an acute pain-killing treatment.
김성국(Seong Guk Kim),조영근(Young Kuen Cho),고창용(Chang-Yong Ko),류제청(Jeicheong Ryu),김동현(Donghyung Kim),황동현(Dong Hyung Hwang),송예은(Ye Eun Song),김한성(Han Sung Kim) 대한전자공학회 2015 대한전자공학회 학술대회 Vol.2015 No.6
Measuring shear force is important for investigating the pathology and prevention of pressure ulcers. In this study, we introduced a bi-axial shear transducer as a new shear sensor. The sensor is consisted of aluminum and polyvinyl chloride plates placed between quadrangular aluminum plates. The shear force on the interface between the human body and a stand-up wheelchair was measured during sitting or standing movements. Shear forces on the sacrum and ischium were almost five times higher than those on other sites during experiments periods. In conclusion, the proposed shear sensor may be reliable and useful for measuring the shear force on human?machine interfaces.