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류웅 ( Ung Ryu ),임병욱 ( Byung Wook Lim ),노재욱 ( Jea Wook Roh ),이상은 ( Sang Eun Lee ),손현배 ( Hyun Bae Sohn ),양전호 ( Jeon Ho Yang ),김경아 ( Kyung Ah Kim ),이준성 ( June Sung Lee ),문영수 ( Young Soo Moon ),김한성 ( Han S 대한소화기학회 2004 대한소화기학회지 Vol.44 No.2
Adult intussusception secondary to primary sarcoma is a rare cause of small bowel obstruction. Only a few cases of malignant fibrous histiocytoma (MFH) of small bowel presenting as an intussusception have been reported in the literatures. We report a case
Yoon, Tae-Ung,Baek, Seung Bin,Kim, Dongwook,Kim, Eun-Jung,Lee, Wang-Geun,Singh, Bhupendra Kumar,Lah, Myoung Soo,Bae, Youn-Sang,Kim, Kwang S. The Royal Society of Chemistry 2018 Chemical communications Vol.54 No.67
<P>A highly robust porous hydrogen-bonded organic framework (HOF) constructed by 4,4′,4′′-benzene-1,3,5-triyl-tris(benzoic acid) not only achieves the highest uptakes of ethylene and ethane among the HOF materials, but also exhibits unusual adsorption selectivity of C2H6 over other C2 gases. Besides, it exhibits the second highest acetylene uptake among all the reported HOF materials.</P>
One Sister and Brother with Mirror Image Myopic Anisometropia
Sung Joon Park,Joo Yeon Kim,Seung Hee Baek,Eung Suk Kim,Ung Soo S. Kim 대한안과학회 2010 Korean Journal of Ophthalmology Vol.24 No.1
We report a case of one sister and brother with mirror image myopic anisometropia. One sister and brother complained visual disturbance. The sister was 10 years 11 months old, and brother was 8 years 4 months old. Full ophthalmic examinations were performed, including slit lamp examination, intraocular pressure, keratometry, anterior chamber depth, axial length, fundus examination and the cycloplegic refraction. The cycloplegic refractive power was -15.50 dpt cyl.+4.50 dpt Ax 85° (right eye), -1.00 dpt cyl.+0.50 dpt Ax 90° (left eye) in the sister; -1.75 dpt cyl.+2.25 dpt Ax 90° (right eye), -9.50 dpt cyl.+4.00 dpt Ax 80° (left eye) in the brother. The co-occurrence of severe myopic anisometropia in a sister and brother is extremely rare. The present case suggests that severe myopic anisometropia may be related by genetic inheritance.
Lim, Suk Hyun,Jeong, Ho Cheol,Sohn, Youngku,Kim, Young-Il,Cho, Dae Won,Woo, Hee-Jae,Shin, Ik-Soo,Yoon, Ung Chan,Mariano, Patrick S. American Chemical Society 2016 Journal of organic chemistry Vol.81 No.6
<P>Photoreactions between C-60 and secondary N-trimethylsilylmethyl-N-benzylamines were explored to evaluate the feasibility of a new method for secondary amino-methylation of electron acceptors. The results show that photoreactions of C-60 with these secondary amines in 10% EtOH-toluene occur to form aminomethyl-1,2-dihydrofullerenes predominantly through a pathway involving single electron transfer (SET)-promoted formation of secondary aminium radicals followed by preferential loss of the a-trimethylsilyl group. The aminomethyl radicals formed in this manner then couple with C-60 or C-60(center dot-) to form radical or anion precursors of the aminomethyl-1,2-dihydrofullerenes. In contrast to thermal and photochemical strategies developed previously, the new SET photochemical approach using alpha-trimethylsilyl-substituted secondary amines is both mild and efficient, and as a result, it should be useful in broadening the library of substituted fullerenes. Moreover, the results should have an impact on the design of SET promoted C-C bond forming reactions. Specifically, introduction of an a-trimethylsilyl group leads to a change in the chemoselectivity of SET-promoted reactions of secondary amines with acceptors that typically favor aminium radical N-H deprotonation, leading to N-C bond formation. Finally, symmetric and unsymmetric fulleropyrrolidines are also generated in yields that are highly dependent on the electronic properties of arene ring substituents in amines, irradiation time, and solvent.</P>