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박홍재,김완수,Hong Jae Park,Wan Soo Kim 대한안과학회 2006 대한안과학회지 Vol.47 No.6
Purpose: To present postoperative refractive changes in patients with optic capturing. Methods: This retrospective review was comprised of 81 eyes of 69 presenile and senile cataract patients who had undergone cataract surgeries, and 20 eyes of 11 pediatric cataract patients who had undergone irrigation and aspiration of the cataract, posterior continuous curvilinear capsulorhexis (PCCC) and optic capturing. Presenile and senile cataract patients were divided into three groups: Group Ⅰ: Phacoemulsification with posterior chamber lens implantation (Phaco with PCL), 37 eyes; Group Ⅱ: Phaco with PCL and PCCC, 22 eyes; Group Ⅲ: Phaco with PCL, PCCC and optic capturing, 22 eyes. Preoperative target refractive error and postoperative refractive errors were compared postoperatively. Results: Hyperopic shiftings were noticed in Groups Ⅰ and Ⅱ, but were not statistically significanct. However, statistically significant hyperopic shifting was found in Group Ⅲ. In pediatric populations, we found no statistically significant refractive changes. Conclusions: PCCC alone does not cause refractive change postoperatively. When performing optic capturing, postoperative hyperopic shifting must be considered.
농업기술 - 최고품질 쌀 생산을 위해서 논 토양관리는 어떻게 해야 하나?
박홍재,Park, Hong-Jae 전국농업기술자협회 2012 농업기술회보 Vol.49 No.2
최고품질 쌀을 생산하기 위해서는 가장 기본이 토양관리부터 시작된다. 논토양을 관리하는 방법은 여러 가지가 있는데 여기에서는 심경과 심토파쇄, 유기물사용, 규산질비료의 필요성 등 미질향상을 위한 토양관리에 대해서 알아본다.
전시회 리포트-‘SonimagFoto 2005’에 다녀와서...
박홍재,Park, Hong-Jae 한국광학기기산업협회 2005 光學世界 Vol.100 No.-
스페인은 화폐가 유로화로 되면서 많은 이득을 취했고 이로 인해 다소 물가상승과 더불어 생활수준이 많이 향상되어 잠재구매력 또한 충분히 축적되어 있는 시장으로 급변하고 있는 추세이다. 현재 스페인에는 사진영상기자재와 관련하여 다양한 품목들을 갖추고 있지 않다. 때문에 한국기업들이 스페인에서 열리는 사진영상기자재전을 통해 치밀한 준비와 함께 스페인 시장을 공략한다면 2~4년 내에 좋은 성과가 예상된다.
농업기술 - 최고품질 쌀을 생산하기 위한 적기 수확 및 수확 후 관리기술
박홍재,Park, Hong-Jae 전국농업기술자협회 2012 농업기술회보 Vol.49 No.5
벼 이삭이 팰 때는 각종 환경에 민감한 시기로 물 관리 등 벼농사 후기관리를 잘해야 최고품질의 쌀을 생산할 수 있다. 유숙기 이후 물 관리와 적기수확 시기, 벼를 수확한 이후 올바른 건조과정을 통해 최고 품질의 쌀을 생산하는 기술을 알아본다.
陸地棉과 亞細亞棉의 種間交雜에서 花粉發芽, 受精 및 種子 發育
Hong Jae Park(朴洪在),Kyung Soo Min(閔庚洙),Jang Soon Ahn(安奬淳) 한국육종학회 1997 한국육종학회지 Vol.29 No.1
Histological studies were carried out to investigate a period of pollen germination, pollen tube elongation, fertilization, endosperm and embryo development and fiber formation in Gossypium hirsutum, G. arboreum and their reciprocal crosses. Pollen germination started within 30 minutes after pollination in the selfings of G. hirsutum and G. arboreum, and G. arboreum×G. hirsutum and cross, but after 1 hour in G. hirsutum×G. arboreum cross. The fertilization of the egg took 24~30 hours in G. hirsutum selfings, 28~30 hours in G. arboreum selfings, 36~44 hours in G. hirsutum×G. arboreum cross and 28~36 hours in G. arboreum×G. hirsutum cross. Proembryos appeared 5 days after pollination in the selfings and embryos started to abort 10 days after pollination in the interspecific crossing. In the testa fiber, fiber cell began to grow in 24~48 hours after pollination, length of a matured fiber was 22~32mm and 19~22mm in Gossypium hirsutum and G. arboreum, respectively. The development of testa fiber was stopped to grow 7~10 days after pollination in Gossypium hirsutum×G. arboreum, and the length of fiber was 10~13mm. The ovule and embryo culture to obtain the interspecific hybrid plants between Gossypium hirsutum and G. arboreum should start 2 to 6 days after pollination, when endosperm degeneration initiates.
연구보문 : 자연과학 ; 베트남 식물유전자원의 관리현황
박홍재 ( Hong Jae Park ),이명철 ( Myung Chul Lee ),조규택 ( Gyu Taek Cho ),이석영 ( Sok Young Lee ),김연규 ( Yeon Kyu Kim ) 한국국제농업개발학회 2012 韓國國際農業開發學會誌 Vol.24 No.3
Since 1987, with the issue of the provisional regulations on genetic resources management, the conservation of Plant Genetic Resources for food and Agriculture (PGR) has been considered a national task. A small working unit consisting of just 5 people, belonging to Vietnam Agricultural Science Institute, was then formed to start implementing this national regular task. Latter, in 1996, on the basic of this unit, the Center of Plant Genetic Resources belonging to Vietnam Agricultural Science Institute was established, which had the mandate to coordinate all the activities relating to PGR throughout the country. A national network of PGR conservation was also established with 20 member institutions, each is responsible for ex situ conservation of certain crop genetic resources. More recently, in 2005 in order to better coordinate the national activities and programs towards effective conservation and sustainable use of PGR, the government of Vietnam found, asanup-gradation of the former Plant Genetic Resources Center, the Plant Resources Center(PRC) as an autonomous research institute under Vietnam Academy of Agricultural Sciences. Together with all this institutional development, capacity of institutions involved have also been strengthened, and facilities for ex situ conservation of PGR at the National Network members improved. During the last 15 years, activities in all the areas of PGR conservation and sustainable use were promoted. The most significant achievements however were obtained in the area of ex situ conservation with the establishment of the National Genebank and of ex situ collections of various crops maintained by the National Network member institutions distributed all over the country. A significant number of germplasm accessions of different species were collected and maintained ex situ, bringing the total accessions number maintained ex situ to over 25,000. The characterization and information activities were also expanded. All the around 18,000 accessions maintained in the National Genebank were characterized and preliminarily evaluated, and a database containing all the relevant information was developed, maintained and shared using GMS. Each year over 1,000 germplasm accessions were accessed for different use purposes. Attention to in situ conservation was also increased during the last 15 years. Different projects were conducted with increased number of on-farm conservation sites and participation with increased number of local crop varieties recovered and reintroduced into production. Some varieties with special quality has been developed and registered. Nevertheless, there are still important weakness in all the active areas, namely poor storage facility and inadequate evaluation of the ex situ collections, limited participation and lack of methodology for in situ conservation, lack of supportive policies, limited human and financial source etc. To introduce a plant genetic resources from PRC in Vietnam, it should need to conduct cooperative research between Korea and Vietnam on characterization as well as collection and management of local crop in Vietnam.