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층상이중수산화물(Mg-Al-$CO_3$ 체계)의 물리 · 화학적 특성규명 및 소성된 시료의 크롬산이온 수용액에서 재수화반응
이석우,강문자,문희정,Rhee, Seog Woo,Kang, Mun-Ja,Moon, Hichung 대한화학회 1995 대한화학회지 Vol.39 No.8
Layered double hydroxides ($Mg-Al-CO_3$ systems, LDH), which are hydrotalcite-like anionic clay minerals, having different $Mg^{2+}\;to\;Al^{3+}$ ratio were synthesized by coprecipitation method. The subsequent products were characterized by the following methods; elemental analysis, X-ray powder diffraction, thermal analysis (DSC and TGA), FT-IR and $^{27}$Al-MAS NMR. X-ray powder patterns showed that the products formed were layered structure materials. Two heat absorption peaks were observed around 20 ∼280$^{\circ}C$ (surface water and interlayer water) and 280∼500$^{\circ}C$ (water from lattice hydroxide and carbon dioxide from interlayer carbonate) in DSC diagrams, and they were quantitatively analyzed by TGA diagrams (in case LDH4 16.2% and 28.6% respectively). FT-IR spectra indicate that the interlayer carbonate ions occupied symmetrical sites between two adjacent layers in a parallel direction. $^{27}$Al-MAS NMR spectra show only single resonance (8.6 ppm) of the octahedrally coordinated aluminum similar magnesium. When LDH4 was calcined at 560$^{\circ}C$ for 3 hours in air, its layered structure was destroyed giving a mixed metal oxide. However it readily became rehydrated in aqueous chromate solution to its original structure. 하이드로탈시이트류 음이온성 점토광물로 잘 알려진 증상이중수산화물($Mg-Al-CO_3$ 체계)을 마그네슘과 알루미늄의 비를 달리하면서 공침전법으로 합성하였다. 얻어진 생성물들의 특성을 원소조성분석, 분말 X-선회절분석, 열분석(시차주사열량분석과 열무게분석), FT-IR분광분석 및 $^{27}$/Al-MAS NMR분석등으로 규명하였다. 분말 X-선회절분석으로 생성물들이 층상구조를 이루고 있음을 확인하였다. 시차주사열량분석결과에서는 20-280$^{\circ}C$ 영역에서 표면수 및 층간수의 이탈로 인한 흡열피크가 관찰되며, 280-500$^{\circ}C$ 영역에서격자수 및 이산화탄소의 이탈로 일어나는 화학변화에 의한 강한 흡혈피크가 관찰되었다. 열무게분석결과에서는 두 영역의 질량감소량을 측정할 수 있었다(LDH4의 경우 각각 16.2%와 28.6%). FT-IR 분광분석결과층간의 탄산이온은 층과 평행하게 $D_{3h}$ 대칭구조로 존재하며, $^{27}$/Al-MAS NMR분석결과 층안의 알루미늄은 마그네슘과 마찬가지로 수산화이온에 의해 6배위환경으로 존재하였다. 공기분위기하의 560$^{\circ}C$에서 3시간 소성되어진 시료는 본래의 층상구조가 파괴된 균일한 혼합금속산화물로 변화하며, 이 물질은 크롬산이온 수용액에서 빠르게 재수화반응을 일으켜 본래의 층상구조를 회복하였다.
강진국(Jin Kook Kang),서동엽(Dong Youb Suh),이금복(Kum Bok Lee),심명석(Myung Suk Sim),박동선(Dong Sun Park),강문자(Moon Ja Kang) 대한소화기학회 1993 대한소화기학회지 Vol.25 No.5
Foregut choristoma is a benign lesion of the gastrointestinal tract composed of smooth muscle, cysts, and glandular structures lined hy tall columnar epithelium, Brunner's glands, and sometimes pancreatic tissue. As far as we know, only two cases were found in the small intestine outside the duodenum or Meckel's diverticulum in the English literature of the world. A jejunal foregut choristoma in a 73-year-old man with a pancreatic carcinoma is presented.
신장내과 조기의뢰가 혈액투석 예후에 미치는 영향 : 단일 임상 기관 연구
강우헌 ( Woo Heon Kang ),오하영 ( Ha Young Oh ),신유정 ( You Jung Shin ),설정숙 ( Jeong Sook Seol ),강문자 ( Moon Ja Kang ),탁은영 ( Eun Young Tak ),이남선 ( Nam Sun Lee ),이미경 ( Mi Kyoung Lee ),류로사 ( Ro Sa Ryu ),송영혜 ( You 대한신장학회 2006 Kidney Research and Clinical Practice Vol.25 No.2
갑상선 선종을 동반한 부갑상선 선종 1예 : A Case Report
康文子,金泰辰,朴錫劑,玄九源,金聖旭,趙炳鎬,金英振,權景澈 中央醫學社 1973 中央醫學 Vol.25 No.1
A case of non-functioning parathyroid adenoma with hyper functioning thyroid adenoma is presented. A 40 year old housewife was admitted to this hospital with palpable mass on the anterior aspect of neck and palpitation since last 7 months. Thyroidectomy was performed under the diagnosis of toxic nodular goiter. During thyroidectomy, enlarged left lower parathyroid gland was found and surgically removed. No clinical symptoms and laboratory finding of hyperparathyroidism is noted. Microscopic examination revealed cystic degeneration of adenoma of thyroid and parathyroid adenoma composed of chief cell, water clear cell and oxyphil cells.
김용민,강욱,이종봉,강문자,박문향,이권전,노순태 대한내과학회 1990 대한내과학회지 Vol.39 No.1
Hemangiopericytoma arises from perictes enveloping capillaries, so it can be found virtually in almost any part of the body and at any age. The most common sites of origin are the thigh and retroperitoneum. Lung is an uncommon site despite its high vascularity. The author reports a case of primary malignant hemangiopericytoma located in the middle lobe of the right lung. Ultrastructural study reveals the presence of distinct basement membrane and delicate cytoplasmic filaments. The clinical symptoms, radiology, pathology, and treatment are discussed.