http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
이유리,( Que Thi Nguyen ),( Xuan Huy Do ),백경열 한국공업화학회 2019 한국공업화학회 연구논문 초록집 Vol.2019 No.0
An acid-base bifunctional zeolitic imidazolate framework, ZIF8-A61-SO<sub>3</sub>H, catalyst with amine and sulfonic acid groups was successfully prepared through two step post-synthetic modification: preparation of amine-functionalized ZIF-8 with amine contents of 61 % (ZIF8-A61), followed by the sulfonic acid functionalization. Amine-functionalized ZIF8-A materials with difference amine contents were also prepared by controlling the synthesis time. All obtained ZIF catalysts evaluated as a heterogeneous catalyst for a one-pot deacetalization-Knoevenagel condensation reaction. Compared with ZIF-8 and ZIF8-A catalysts, ZIF8-A61-SO<sub>3</sub>H catalyst showed good catalytic performance with 100 % conversion of the reactant and 98 % selectivity of the final product. Enhanced catalytic activity can be attributed to the co-existence of site-isolated acid-base groups on ZIF8-A61-SO<sub>3</sub>H catalyst in close proximity. The heterogeneous nature and reusability of the catalyst was confirmed.
조광열(Gwang Yeol Joh),윤재일(Jai Il Youn),이유신(Yoo Shin Lee) 대한피부과학회 1987 대한피부과학회지 Vol.25 No.3
We report a case of solar urticaria being activated by both UVA and visible radiation and positive in passive transfer test by visible light, which was treated with sunlight and UVA radiation. A short course of treatment with sunlight produced no benificial effect. UVA phototherpy produced a rnarked increase in the minirnal urtication dose by UVA but there was no increased tolerance to sun exposure.
자외선 조사에 의한 생쥐 피부에서의 일광화상 세포의 정량적 변화
조광열(Gwang Yeol Joh),윤재일(Jai Il Youn),이유신(Yoo Shin Lee) 대한피부과학회 1986 大韓皮膚科學會誌 Vol.24 No.1
In this study, a total of 115 ICR male albino haired mice were used and divided into two groups(A & B) for experiment. In group A(65 mice), quantiatation of sunburn cell(SBC) production and its distribution according to the time course after ultraviolet irradiation was measured. In group B(50mice), quantitation of dose-response experiments for SBC production after ultraviolet irradiation was measured. The results were as follows: ]. SBCs were recognized by 2 hours after irradiation. There was a tendency to increase from 2 hours to 24 hours and decrease from then to l week after irradiation, 2. The increase of SBCs in lower epidermis 2 hours io 8 hours after exposure and in upper epidermis 24 hours after irradiation were statistically significant (p<0. 05). SBG number in all layers declined from 36 hours to 1 week after exposure. 3. The linear relationship which observed(y=8.09+0.85x, R=0.87) suggests a dose-response relationship between UVB dose and SBC number.
조광열(Gwang Yeol Joh),윤재일(Jai Il Youn),이유신(Yoo Shin Lee) 대한피부과학회 1986 대한피부과학회지 Vol.24 No.1
We report two familial cases of reticulate acropigmentation of kitamura in 20-year-old male and 29-year-old female patients in which reticualte, brownish, slightly depressed pigmentation developed on acral parts of extremities and subsequently extended proximally. Characteristic pits and breaks on palms and soles were noted. Histologic findings revealed epidermal atrophy and enlongation of rete ridges with large amounts of melanin. Electron microscopic findings showed increased melanogenesis in melanocytes and numerous melanosomes and melanosome complex in keratinocytes.
조광열(Gwang Yeol Joh),윤재일(Jai Il Youn),이유신(Yoo Shin Lee) 대한피부과학회 1985 대한피부과학회지 Vol.23 No.3
Solar urticaria is an uncommon disorder characterized by rapid development of urticarial reaction in areas of skin exposed to nonizing electromagnetic radiation. Herber and Baer classified solar urticaria into eight types on the basis of action spectrum and passive or reverse passive transfer ability. We report two cases of type ]g solar urticaria which were activated by visible light and negative in both passive and reverse passive transfer test.
조광열(Gwang Yeol Joh),이애영(Ai Young Lee),윤재일(Jai Il Youn),이유신(Yoo Shin Lee) 대한피부과학회 1985 대한피부과학회지 Vol.23 No.1
It has been generally assumed that eccrine poroma ariees from acroayringium, epidermal sweat duct unit. One of the characteriatics of thie structure is abaence of melanocytes and melanin granules among ite cells. Hmvever, a cornplete abeence of melanocytes and melanin granules in eccrine poroma is not invariable and a few reparts of such an occurrenee were presented, We report a case of eccrine poroma on the area below lateral malleolus af left foot. Microscpically melanin granules, confirmed by the use of Fontana Masson stain, were found in some of the tumor cells.
1P-161 Synthesis of the Mn<sup>2+</sup>-doped ZnSe@ZnS quantum dots
이유로,김종규,유정열,김우석,정운호,박선아,김은비,하태훈,이탁재 한국공업화학회 2017 한국공업화학회 연구논문 초록집 Vol.2017 No.1
Relatively monodisperse and highly luminescent Mn<sup>2+</sup>-doped ZnSe nanocrystals were synthesized in aqueous solution at 100°C using the nucleation-doping strategy. The effects were investigated systematically. Using 3-mercaptopropionic acid as capping ligand afforded 3.1 nm wide ZnSe:Mn quantum dots (QDs) with very low surface defect density and which exhibited the Mn<sup>2+</sup>related orange luminescence. The post-preparative introduction of a ZnS shell at the surface of the Mn<sup>2+</sup>-doped ZnSe QDs improved their photoluminescence properties, resulting in stronger emission. . Mn<sup>2+</sup>-doped ZnSe@ZnS QDs were investigated by X-ray differaction spectroscopy(XRD), UV-visible spectroscopy, Photoluminescence spectroscopy(PL). XRD confirms Mn<sup>2+</sup>-doped ZnSe@ZnS QDs nanocrystal structure. Because of the Ostwald ripening effect, UV spectrum was indicated red-shift. The absorption peak was indicated redshift. The PL of the clear orange solution was monitored in the course of the nanocrystal growth.