• 한국전기전자재료학회:학술대회논문집
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• 한국전기전자재료학회 1989년도 춘계학술대회 논문집
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• pp.26-28
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• 1989

In this paper, The preparation and characteristics of polyaniline/Zn battery by (NH$_4$)$_2$S$_2$O$\sub$8/ and used as cathod active material to investigate the characteristics of polyaniline/Zn battery. Characteristics of polyaniline/Zn battery was affected of amounts of electrolytes and additives such as graphite and carbon black.

• 한국세라믹학회지
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• 제55권4호
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• pp.376-380
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• 2018

Microstructural characterization of Ni-yttria-stabilized zirconia (YSZ) anodes using secondary electron images has been limited by a lack of contrast between Ni and YSZ phases. This paper reports a sample preparation method for obtaining secondary electron images that allow the detection of Ni, YSZ, and pore phases together. Ni-YSZ anode samples were obtained by reducing NiO-YSZ samples prepared by using the mixed oxide method. Colloidal silica polishing and electrolytic etching were performed on the Ni-YSZ samples. The morphological change of the sample surface after each polishing process is examined.

• 펄프종이기술
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• 제44권6호
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• pp.28-35
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• 2012

Water-in-oil emulsion (W/O) and oil-in-water emulsion (O/W) types biodegradable polymer emulsions prepared to PLA and PBS. The optimal mixing ratio of polymer : solvent : OA : TEA : water was found be 10 : 40 : 4 : 6 : 30(g) when preparing emulsions. Biodegradability was most retained after preparation of polymer emulsions. Particle size of PLA and PBS emulsions were 2-3 ${\mu}m$ and 3-4 ${\mu}m$, respectively. Molecular weight of PLA and PBS emulsions were 108,000 and 92,000, respectively. And molecular weight of PLA and PBS emulsions became slightly lower than those of pellets.

• 폴리머
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• 제34권3호
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• pp.261-268
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• 2010

본 연구에서는 상전이 온도가 36 $^{\circ}C$인 n-eicosnae을 열가소성 폴리올레핀 고분자인 폴리프로필렌과 블렌드하였으며, 또한 최근의 형태안정성 PCM(SSPCM)의 연구검토를 통하여 폴리프로필렌과 n-eicosnae의 특성과 잠열저장체로서의 적용 가능성을 확인하였다. 상전이 온도가 36 $^{\circ}C$인 n-eicosane과 폴리프로필렌을 멜팅방법과 흡수방법을 이용하여 시료를 제조하였다. 제조된 형태안정성 PCM(SSPCM)을 DSC, WAXD, FTIR spectroscopy, ARES로 분석결과 형태안정성, 열용량의 향상을 확인하였다.

• 한국산업융합학회 논문집
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• 제19권4호
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• pp.237-244
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• 2016

This paper investigates the possibility to increase the economic value of the thinned young apple trough fermentation process. It is studies the optimal fermentation condition of thinned young apple by manipulating preparation treatment and sugar content. To do this following steps are done. Firstly, different preparation treatment for thinned young apple such as whole apple, cutting apple, and blending apple were done. The different sugar content such as $24^{\circ}Brix$, $15^{\circ}Brix$ and $4^{\circ}Brix$ was added. Secondly, the sugar contents and pH level were measured during fermentation process. Finally, statistical analysis was used to examine the relation between the preparation treatment, sugar content and pH level during the fermentation process. The experimental result shows that the different preparation treatment influences to the fermentation process. The blending apple treatment gave lower pH level compared to other kind treatments. The sugar content of thinned young apple was decrease during the fermentation process. The statistical analysis shows that the manipulation preparation treatment and sugar content affect the final pH level and whole fermentation process. Experimental result shows that the thinned young apple fermentation could be proposed as new alternative product in the market. The best fermentation process was obtained from blending thinned young apple treatment with $24^{\circ}Brix$.

• 디지털융복합연구
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• 제12권10호
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• pp.571-576
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• 2014

본 연구는 디지털대학 중년기 재학생들이 갖는 내외통제성 및 노화불안이 중년기 주요발달과업인 노후준비에 어떠한 영향을 미치는가를 확인하여, 노후준비에 영향력 있는 심리적 변인이 내외통제성과 같은 상황통제에 대한 기본적 생활신념인지, 혹은 노화불안과 같이 중년기에 시기적으로 급증하는 불안기제인지를 파악하려는 탐색적 연구이다. 조사대상자들은 디지털 대학에서 자발적으로 경력개발을 하며 적극적으로 노후를 대비해가는 중년기 재학생들이다. 이에 본 연구에서는 내외통제성, 노화불안, 인구사회학적 변인을 독립변인으로, 노후준비를 종속변인으로 설정하여 검증하였고, 최종적으로 308부의 설문이 결과분석에 사용되었다. 본 연구결과를 통해, 노후준비에 영향력이 있는 변인은 노화불안, 수입, 나이, 종교 등으로 확인되었다. 중년기의 당면한 현실적 난제인 노후준비에는 내외통제성과 같은 개인 신념은 통계적으로 유의미하지 않았고, 중년기에 급증하는 노화불안이 노후준비에 부정적인 영향을 미치고 있음을 확인하였다. 이에 효과적인 노후준비를 위한 심리적 기제 차원에서 중년기 성인들은 노화에 대한 지나친 불안보다는 긍정적인 노화관과 노후문제에 대한 현실적인 생활전략을 가져야함을 제시하였다.

• 대한약침학회지
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• 제12권1호
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• pp.77-89
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• 2009

Objectives : Mistletoe extracts have been in use for around 85 years, predominantly in the area of cancer therapy. Today mistletoe preparations are among the most prescribed drugs in cancer medicine, thus constituting a standard biological therapy in the area of oncology. The purpose of this study is to analyze the practical implications of mistletoe cancer therapy, their clinical status, their preparation techniques and companies. Contents : Mistletoe therapy for cancer has been developed within the context of anthroposophical medicine. One major effect of mistletoe extract is that it stimulates the immune system and cancer defences. In Germany, a total of eight different mistletoe preparations are available, five developed by Anthroposophic Medicine and three evolved from research in phytotherapy. Therapy always consists of an introductory phase in order to test the patient's tolerance, find the right dosage and choose the most suitable preparation. This paper covers the background of mistletoe medical plant materials, mistletoe therapy for cancer, the anthroposophical medicine and clinical research, the practical regulation of treatment, preparation of mistletoe drugs. Result & suggestion : Mistletoe extracts are a complementary teratment of cancer, widely used in intergrative cancer care. The study of the integration of korean mistletoe extracts to oriental cancer medicine, its development and feasibility in Korea are urgently needed. The products, substances, compositions of european mistletoe drugs are very similar to those of oriental medicine theory. Applying the mistletoe cancer therapy and its preparation techniques to oriental medicine, the herbal acupuncture preparation should be modernized and korean mistletoe products are to be developed. To this end, government and herbal acupuncture society need to interact each other for the development of oriental mistletoe cancer medicine.

• The Plant Pathology Journal
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• 제38권6호
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• pp.679-684
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• 2022

Rice blast is one of the most destructive diseases of rice worldwide, and the causative agent is the filamentous ascomycete Magnaporthe oryzae. With the successful cloning of more and more avirulence genes from M. oryzae, the direct extraction of M. oryzae genomic DNA from infected rice tissue would be useful alternative for rapid monitoring of changes of avirulence genes without isolation and cultivation of the pathogen. In this study, a fast, low-cost and reliable method for DNA preparation of M. oryzae from a small piece of infected single rice leaf or neck lesion was established. This single step method only required 10 min for DNA preparation and conventional chemical reagents commonly found in the laboratory. The AvrPik and AvrPi9 genes were successfully amplified with the prepared DNA. The expected DNA fragments from 570 bp to 1,139 bp could be amplified even three months after DNA preparation. This method was also suitable for DNA preparation from M. oryzae strains stored on the filter paper. All together these results indicate that the DNA preparation method established in this study is reliable, and could meet the basic needs for polymerase chain reaction-based analysis of M. oryzae.

• 한국결정성장학회:학술대회논문집
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• 한국결정성장학회 1997년도 Proceedings of the 12th KACG Technical Meeting and the 4th Korea-Japan EMGS (Electronic Materials Growth Symposium)
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• pp.3-5
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• 1997

Synthesis of ammonium aluminum hydrogen carbonate(AAHC) via reaction of aluminum bicarbonate and aluminum salt and thermal decomposition is oner of the important processes for preparation of high pure and ultra fine alumina. Kato and coworkers[1] developed this process, at same time Von Erdos and Altorfe[2] found AAHC in the corrosive products of aluminum in the atmosphere of carbon dioxide and ammonia. Murase and Iga[3] synthesized acicular AAHC in a autoclave under 60 to 12$0^{\circ}C$ Hayashi[4] optimized the conditions for preparation of AAHC and alumina. Attemp has been made in this paper to reveal the conditions affect the morphology of the synthesized AAHC and the consequently produced alumina.

• 대한심미치과학회지
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• 제13권2호
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• pp.13-24
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• 2004

In everyday dental practice, one of the most important procedures is fixed prosthodontics which includes gold and ceramic restorative treatments. This procedure can be divided into tooth preparation, impression taking, laboratory work, occlusal adjustment and cementation. The first step is tooth preparation and it needs not only good techniques but also deep knowledge and understanding of oral biology. Also, there must be good knowledge of the principles and materials of the procedure. The patient's satisfaction can be achieved from natural contour, good shade, and precise margin fit, especially in ceramic restorations on anterior regions. It is essential to fastidiously prepare the tooth to make aesthetic restorations with a good margin fit. Tooth preparation techniques and three case reports of ceramic restorations on the anterior region are presented and discussed in this paper.