Coastal dune wetland has an important ecological implication in that it could be closely related to the coastal dune ecosystem by providing various ecological habitats as well as ecological corridor. This paper aims to investigate the hydrological characteristics and aquatic biota of Mokgimiyeonmot (pond), coastal dune wetland in Gulupdo (island). Mokgimiyeonmot located in the lowland dune flat areas has six months long hydro period a year and can be categorized into wet dune slack type coastal dune wetland. As a result of this study, two species of freshwater fishes, two species of amphibia, and 35 species of benthic macro-invertebrates are recognized. Talitridae sp. belonging to Amphipoda also recognized in this survey for the first time from Korea. The results of this study are expected to be basic data necessary to understand the aquatic ecosystems and manage the ecological function of coastal dune field.

Poly propylene carbonate (PPC)와 cloisite 20B (PPC/C-20B)을 solution method를 통하여 합성하였고, 이를 통해 합성된 나노 조성물의 morphology, 열적 특성, 수분 흡수의 특성을 평가하였다. 나노 조성물의 구조는 X-ray diffraction (XRD) 로 확인하였고, 열적 특성은 thermal gravimetric analysis (TGA)와 differential scanning calorimetric (DSC)를 이용해 분석하였다. TGA와 DSC의 결과를 통해 나노 조성물은 기존의 PPC에 비해 높은 열적 안정성을 가짐을 확인할 수 있었다. DSC측정에서 5 wt%의 clay를 포함한 nanohybrid의 유리전이온도는 순수한 PPC의 21℃에서 30℃로 9℃ 증가하였고, TGA 측정을 통해 확인한 열분해온도(Td50%)는 순수 PPC에 비해 23℃가 높아졌음을 확인하였다. 또한 PPC 나노 조성물의 수분 흡수량은 기존의 PPC에 비해 상당히 감소하였다. 이는 clay의 PPC matrix 구조 내에 존재함으로 인해 수분 흡수를 감소시킨 것으로 해석할 수 있다. 수분 흡수는 코팅 막의 분해를 유발하고 물리적, 기계적 성능에 영향을 미친다. 따라서 나노 조성물로 인한 PPC의 열적 안정성, 수분흡수도 향상은 PPC의 사용과 실제 공정에 중요한 변수로 작용할 수 있다.

Byun Jeung Ok Ham, written by Jin Sa Tak(1627~1707, won gong, penname ju hwa ja) is composed of four books. this book is estimated of being written after A.D 1688 and composed of internal medicine, obstetrics and gynecology, ophthalmology, dental surgery and so on, total 36 parts of clinical medicine. This is the first book of that four studying about definition on eum yang of 31 diseases. 31 subjects follow, attack by wind and cold(傷風傷寒), paralysis(中風), vomiting(吐症), diarrhea(瀉症), malaria(瘧疾), dysentery(痢疾), epilepsy(癲狂), cough(咳嗽), constipation and urinal impossibility(大小便閉), heartache(心痛), abdominal pain(腹痛), headache(頭痛), eye disease(目痛), tonsillitis(雙蛾), tumor(癰瘡), exhaustion(脫症), perspiration(汗症), congestion(痰症), swelling(腫脹), heatstroke(暑症), asthma(喘症), evil influence(中邪), hematemesis(吐血), wet dream(夢遺), pyrosis(呑酸), backache(腰痛), intestinal convulsion(霍亂). childbirth(生産), hard labor(小産), after delivery(産後), sterility(子嗣). this treatise is the first book of four which deals with eum yang(陰陽) translating into korean and studying about medical theories. In every parts, author's unique clinical theory appears affluently and in that periods his study developmented a lot in those days' medical methods. second book is weaknessand strongness,third upper and low, fourth truth and untruth. first book, Jin Sa Tak says studying on eum yang is oriental medical basic theory and on incurable diseases or chronic symptoms, doctor must go back to that eumyang demonstration after can cure patients. second parts are on weakness and strongness demonstration, that weakness is weakness of patients' energy and strongness is prosperous condition of diseases' attack. third parts are on upper and low, that upper is upper parts of human body of painful parts and low is human low parts of pain, that is parts of under waist. fourth parts are truth and untruth, true symptoms and untrue symptoms, that is the real reaction of human condition and the other way. every prescriptions are author's creations. this book provides new viewpoints which surpasses original ancient medical theories. author suggests new opinions about chronic and incurable diseases. prescrisptions were made of following correct theory of gun sin jua sa theory (君臣佐使) and promoted levels of clinical methods. this treatise refers to dong ui bo gam(東醫寶鑑), huang je nei gyung(黃帝內經), sang han lon(傷寒論), ui hak yip mun(醫學入門) and modern physiology and pathology.