Steel and iron manufacture works exist that many latency risk as melting liquid of high temperature, work of high place, and so on. Once in a while, the accident case make use of basic data for latency risk analysis in a place of business. In this paper, we investigated the cause of the accident in steel an iron works. The result, we came across that many latency risk in steel and iron manufacture works. The main type of risk are fall, narrow, come flying, etc. Most of the latency risk type are repetition and conventional accident. Accordingly, steel and manufacture works must prevent to repetition and conventional accident.

목적: PRP(범안저레이저광응고술) 시행 전에 측정한 망막정맥충만시간의 절대치 뿐만 아니라, PRP 시행 전과 후에 그 변화량을 평가함으로써, 그 변화량과 신생혈관 진행과의 연관성을 규명하고자 하였다. 방법: 증식당뇨 망막병증으로 본원에서 PRP를 시행한 환자 중 PRP 전과 후에 형광안저촬영을 시행하였던 환자 32안을 주사형 레이저검안경을 이용한 형광안저촬영 시행 후 2주 내에 PRP를 시작하였고 PRP 시행 3~5개월 후에 다시 형광안저촬영을 시행하였다. 결과: 망막정맥충만 시간의 PRP 전 후의 변화는 안정화된 군에서는 -0.99±1.60초 감소하였고 불안정화된 군에서는 0.30±1.69초 증가하였으며 독립 T-검정상 망막정맥충만시간의 변화는 통계적으로 유의하였다(P

The purpose of this study is ultimately subjected to the Orientalism, even though this deals with some positive effects in the realm of art and architecture as the scope of study, because through which the relationship between two different cultures will be discussed. That is to say, this research focused not only on how the presentation of ‘avant-garde’ visual art, which is explained as formal ‘purity’ and ‘abstraction’ as the characteristics of modern arts, could be made in the transition to the 20th's World, but also on what is the role and meaning of Eastern thoughts, which is popular in that time, for the new philosophical background of the artistic revolution. As a result, this study found that a lot of ‘avant-garde’ architects such as F. L. Wright, M. Mahony in Prairie School and L. Sullivan, D. Burnham, J. Root in Chicago School, and Lauweriks, H. P. Berlage who introduced Wright's works into the Europe, had possessed the ‘Universal Philosophy’ including Unitarianism, Transcendentalism, Deism, and Theosophy which are all influenced by Oriental religions and thoughts through historic western philosophers, although it is generally well-known that W. Kandinsky and P. Mondrian were belong to that. Furthermore, they gave attention to the Oriental religions and thoughts in that time, eventually made a historical progressive process of unification of thoughts between East and West. In a word, the new universalism was the philosophical background that made the artist's idea and presentation on ‘from Being into Becoming’.

Recent years have brought remarkable developments in white light emitting devices (WLEDs) and white organic light-emitting devices (WOLEDs). However, their efficiency, CIE values, CRI and lifetime are still not ideal. This review covers detailed discussion about syntheses of organometallic complexes, inorganic phosphors and quantum dots used in WLEDs, WOLEDs and their electroluminescent properties until December 2007.

Development of white light emitting materials has been an interesting area for scientists and scientists have developed many organic, polymer and inorganic materials for white electroluminescent devices. Among them, single component small molecules gave best results in terms of efficiency, simplicity of device fabrication, and CIE values. Therefore, this review covers detailed discussion about syntheses of small compounds used in white organic light emitting devices until 2007.

A natural bio-deodorant was made using pine cone byproduct and microbes, and its efficiency of deodorization and effects on composting progress were evaluated in this research. The natural bio- deodorant was manufactured by mixing the pine cone byproduct with molasses containing mineral water and three microbes (Lactobacillus spp., Alcaligenes spp., Pasteurella spp.), and then incubating at 30℃ for 48 hrs. Usage of the bio-deodorant did not inhibit composting and reduced the production of malodor such as H2S, CH3SH, and NH3 gases. Although reduction of malodor was observed when pine cone byproduct was solely used, inhibition of composting was found in this case. The bio-deodorant induced active decomposition of organic matter during composting and conserved nitrogen by lowering the emission of ammonia.

For many years, experience has been accumulated on embryo and gamete manipulation in mammals, The present work is an introduction of these techniques and their possible application in human embryology in s pecific cases, Mammalian c1on ing has been studied by many groups, but the success rate is sti ll low‘ Removal of maternal chromosomes from unfertil ized oocytes and injection of donor cells into enucleated oocytes are the most important factors for the improvement of cloning effi cien cy, Here, we introduce a novel one-step rnicromanipulation (OSM) system and laser-assisted zona pellucida piel'cing technique (LAZP) , 1n genera l, somatic cell nuclear transfer (SCNT) is completed by many processes including enucleation and donor cell fusion , Howevel', OSM is a simple method because donor cell is directly injected into ooplasm without fusion pl'ocess, 1n addition, chromosomal enucleation and donor cell inj ec tion are perfOl‘med simultaneously in OSM, While OSM was a pplied to porcine SCNT, LAZP was a pplied to murine SCNT, This rninirni zed the use of piezo-dri ven micromanipul ator (P1EZO) , I'educing chances 0 1' problems caused by P1EZO pulses, LAZP reduced time that took to pierce zona pellucida in removal of nucleus fl'om oocyte and somatic cell injection, which might have taken longer time with P1EZO, The simple , new OSM and LAZP system may help to enable large scale cloning by reduction of procedural steps, Pa l'thenogenesis de scribes the growth and development of an embryo without fertilization by a male Parthenogenetic ES cell s (PESCs) can be a useful cell source for tissue I'epail‘ and I'egeneration , Moreover , the defects in full-term developrnent of this PESCs enable researc hers to avoid the ethical concern , Here, the author showed that PESCs can differentiate into osteogenic lineage, The PESCs were induced osteogenic dlfferentlatlon The osteoblas t-specific gene expression such as osteocalcine, osteopontine, osteonectin, bone-sialo protein‘ coll agen type-l and alka line phos phatase showed osteogenic potential of differentiated PESCs, The author also focused on the neuronal induction of murine PESCs by simplified neurona l induction system to generate doparninergic (DA) neurons , As a result , PESCs were differentiated into nestin and Tuj-l positive cell s successfully, a lthough t he generation of DA neuron was Illruted For murine embryo cul ture, novel oil-free microtube cul tu re system was applied , This new culture system provides oil-free cu ltu re condi t ions and is easy to handle It was also associated with faster development and mOl'e t l'ophectodel'mal cells , which will enhance the development of murine embl'Yos to fur t hel' stages ,

This paper describes the state-of-the art research activities on seismic isolation systems for improving the seismic capacities of the bridges in Korea. Though Korea is located in a region of low-to-moderate seismicity, the construction of seismic isolation systems has increased rapidly. The application of seismic isolation system has become popular worldwide because of its stable behavior and economical construction especially for bridge structures. Since optimal reliability level of isolated bridges can be determined as the one that provides the highest net life-cycle benefit to society, or the minimum Life-Cycle Cost (LCC), an optimal design procedure based on minimum LCC concept is more expedient for the design of seismically isolated bridges in areas of low-to-moderate seismicty. To verify the adequacy of the new design concept based on the LCC minimization, experimental studies on seismically isolated bridge are introduced as well, which include pseudo-dynamic test of scaled pier and dynamic field test of full-scale. With the application of seismic isolation systems, many kinds of dampers to improve the seismic capacity of structure are also applied not only to new bridges but also to existing bridges.