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선인장 및 다육식물 혼합식재 실태 및 광과 수분요구에 따른 식물의 분류
송천영,이상덕,임성희,김순재,이정식,Song, C.Y,Lee, S.D.,Lim, S.H.,Kim, S.J.,Lee, J.S. 국립한국농수산대학교 교육개발센터 2006 현장농업연구지 = Journal of practical agricultural resear Vol.8 No.1
This experiment was conducted to investigate current situation and plant grouping by light and watering of mingled several cacti and succulents in a pot. The main 11 cacti are consist of Myrtillocactus geometrizans (Mart.) Cons., Gymnocalycium mihanovichii var. friedrichii Werd., Marginatocereus marginatus(DC.) Backbg., Eriocactus leninghausii (Hge. Jr.) Backbg, Notocactus scopa (Spreng.) Berg., Lobivia nealeana Backbg., Mammillaria elongata var. intertexta (DC.) SD., Pseudoespostoa (Vp1.) Backbg., Mammillaria albilanata Backbg., Mammillaria klissingiana Bod. and Espostoa lanata (HBK.) Br. & R. The main 10 succulents are Kalanchoe thyrsifolia Harv., Portulacaria afra var. foliis-variegatis Jacobs., Crassula perforata Thunbg., Echeveria pulvinata Rose, Aeonium arboreum cv. atropurpureum., Echeveria lauii Moran & J. Meyran, Pachypodium lamerei Drake, Sedum rubrotinctum cv. Aurora Boom., Aloe mitriformis Mill., and Euphorbia coerulescens Haw. The cacti were native to Mexico, Brazil, Peru, Paraguay, Ecuador, etc. The sucullents were native to Mexico, Africa, Gran Canaria, Madagascar, etc. Most of all the cacti and sucullents in the experiment are growing well under full sun or light shade, however Portulacaria afra var. foliis-variegatis Jacobs, and Sedum rubrotinctum cv. Aurora Boom. did not influenced by light. And all the plants require a little or moderate watering. Thus, planting by similar required water and light, when growing in a pot of several cacti and succulents, might be decreased the rate of death causing by their different plant physiology.
페라이트 도금법에 의한 MxZn0.22Fe2.78-xO₄(M=Mn, Ni) 박막의 제조와 자기적 성질
하태욱(T. W. Ha),유윤식(Y. S. Yu),김성철(S. C. Kim),최희락(H. R. Choi),이정식(J. S. Lee) 한국자기학회 2000 韓國磁氣學會誌 Vol.10 No.3
The magnetic thin films can be prepared without vacuum process and under the low temperature (<100 ℃) by ferrite plating. We have performed ferrite plating of Mn_xZn_(0.22)Fe_(2.78-x)O₄(0.00~0.08) films and Ni_xZn_(0.22)Fe_(2.78-x)O₄(0.00~0.15) films on cover glass at the substrate temperature 90℃. The crystal structure of the samples has been identified as a single phase of polycrystal spinel structure by x-ray diffraction technique. The lattice constant in the Mn_xZn_(0.22)Fe_(2.78-x)O₄ films increases but in the Ni_xZn_(0.22)Fe_(2.78-x)O₄ films decrease with the composition parameter, x. The saturation magnetization in the Mn_xZn_(0.22)Fe_(2.78-x)O₄ films does not greatly change, in agreement with observations on bulk samples.
李正植 大韓齒科保存學會 1980 Restorative Dentistry & Endodontics Vol.6 No.1
ABSTRACTFifty human maxillary second molars were injected with china ink, decalcified, cleared, and used in vitro study to determine the number of root canals, the frequency and location of lateral canals, canals per root, and frequency of apical deltas.The results were as follows. 1.The mesiobuccal root was found to contain a single primary canal in 62% of the teeth studied and two canals in 38% of the teeth studied. 2. In mesiobuccal roots with two canals, the seperated apical foramen appeared 24% of the specimens and the common apical foramen 14% of the specimens. Of the 169 canals studied, 23.1% of the canals were found to contain lateral canals and these ramifications were mainly located in the apical third of the root. 3.Of the 169 canals studied, 23.1% Of the canals were found to contain lateral canals and these ramifitions were mainly located in the apical third of the root.