The quantitative study of the groundwater contamination in a porous media is a difficult task. For complex problems, numerical solutions are the most effective means to study the movement of contaminants in the groundwater. The solute transport model used in this study has proved to be an efficient tool to model contaminant transport for complex problems. The model demonstrates its effectiveness in reproducing the contamination by chlorides of the roundwater at the landfill site due to leachate from the wastes. It describes the two dimentional solute transport and alteration of the water quality and forecasts the contamination for different management alternatives of the landfill. The model also indicates how the groundwater contamination can be contained within the Lowry site if a barrier is constructed downstream of the disposed wastes.

마산약(山藥) 경절편(莖節片)의 기내조직(器內組織) 배양(培養)을 위해서 적정배지(適正培地)가 선발(選拔)됨에 따라 이에 적합시(適合時) 되는 생장조절물질(生長調節物質) 활성탄(活性炭)의 처리농도(處理濃度)를 구명(究明)함으로서 기내조직(器內組織) 배양(培養)에 의(依)한 증식율(增殖率)를 높이코져 무기강기성(無機강基性)이 낮은 1/8MS, White에 IAA와 NAA를 1~4mg / l 로 하고 활성탄(活性炭)을 0, 1, 3, 6g / l 수준(水準)으로 실험(實驗)을 실시(實施)하였던 바 다음과 같은 결과(結果)를 얻었다. 1. 1/8MS 배지(培地)의 경우 1~4mg / l, Kinetin 2mg / l 그리고 활성탄(活性炭)을 1~3g / l 첨가(添加) 하므로서 Shoot 유기(誘起)와 식물체(植物體)의 재분화률(再分化率)이 모두 100%에 달하는 효과(效果)를 보였으며 이러한 효과(效果)는 NAA처리시(處理時)에도 같은 경향(傾向)이 있었다. 2. White 배지(培地)의 경우 IAA 1mg / l, Kinetin 2mg / l 그리고 활성탄(活性炭) 6g / l 첨가처리(添加處理)와 NAA 4mg / l, Kinetin 2mg / l 그리고 활성탄(活性炭)을 1g / l 첨가처리(添加處理) 만이 식물체(植物體)의 재분화율(再分化率)이 l00%에 달하였으나 그 외(外) 처리(處理)에서는 대부분(大部分) 저조(低調)하였다. 3. 발육상태(發育狀態)를 보면 1/8M /S 배지(培地)의 경우 IAA 2mg / l, Kinetin 2mg / l 그리고 활성탄(活性炭)을 1g / l 첨가처리(添油處理)와 NAA 4mg / l, Kinetin 2mg / l 활성탄(活性炭)을 1g / l 첨가처리(添加處理) 하므로서 모두 주당(株當) 본수(本數)가 2.3~2.7개(個)이고 발육상태(發育狀態)도 활성탄(活性炭)0g / l, 3g / l, 6g / l 처리(處理)보다 양호(良好)하였다. 4. 그러나 White 배지(培地)의 경우 IAA 1~4mg / l, NAA 1~mg / l 그리고 Kinetin 2mg / l 처리(處理)의 대부분(大部分)이 주당(株當) 본수(本數)가 거의 1개체(個體) 정도(程度)이도 발육상태(發育狀態)도 불량(不良)하였으나 NAA 4mg / l Kinetin 2mg / l 그리고 활성탄(活性炭) 1g / l 첨가처리(添加處理)에서 만이 주당(株當) 본수(本數)가 2.3개이고 개체당(個體當) 발근수(發根數)가 월등(越等)히 많았다. 5. 실험결과(實驗結果) 마 경절편(莖節片) 배양(培養)의 Shoot유가(誘起)에 가장 효과적(效果的)인 배지(培地)는 1/8MS+1AA 2mg / l+Kinetin 2mg / l+활성탄(活性炭) 1g / l 이였으며, White+NAA 4mg / l+Kinetin 2mg / l+활성탄(活性炭)1g / l 로 처리(處理)하는 것이 바람직한 결과(結果)를 얻었다.

Plant in chollabuk-do have investded 105 family, 442 species. 2. The order of distribution of the most family was the Compositae 43, Leguminosae Gramineae each 28, Rosaceae 17, Liliaceas 22, Labiatae 17, Ranunculaceae 12, Betulaceae 11, Violaceae 10, Polygonaceae Aspidiaceae each 9, Cruciferae·Caryothyllaceae·Celastraceae each 8, Fagaceae, Rubiaceae each 6, Ulmaceae 5. 3. Medical plants have invested 56 family, 116 species. 4. The order of the most family was the Compositae 8, Liliaceae Rosaceae·Umbelliferae·Labiatae each 6, Leguminosae·Rutaceae each 5, Campanulaceae·Ranunculaceae each 3, Simaroubaceae·Euphorbiaceae·Araliaceae each 2, Scrophulariaceae·Plantaginaceae each 1.

Extreme environments and freak wave characteristics in the coastal waters of Korean Peninsula are analyzed using the observed wave data. Freak wave has been intensely emphasized as an important environmental force parameter in several recent research works. However, the mechanism and occurrence probability of freak wave are not clarified. The aims of this study are: to summarize the distribution of extreme environment for wind waves, and to find occurrence probability of freak wave in the coastal waters of Korean Peninsula. These extreme sea conditions are discussed by applying extreme value analysis method, and the statistic characteristics are summarized which can be used to the design and analysis of coastal structures. The mechanism and the occurrence probability of freak wave are also discussed in detail using wave parameters in considered with wave deformation in the coastal waters.

It was explained in detail that the present condition of herb culture in Japanese agriculture and the requirement of crude drugs of good and regulqr very hard hit by the market conditionof crude drugs taking ginseng (Panax ginseng C.A.Meyer) and Coptis Rhizome (Coptis japon-ica Makino) as examples. It is not too mach to say that the market is now under the control ofcrude drugs imported from China. The main current of herb culture in Japan will be the con-tract agriculture that the seedlings of good and regular quality are received and are cultivateduntil the enough time, and the farm products are directly handed to the medicinal company fol-lowing the example of zedoary (Curcuma zedoaria Roscoe) .