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Shi, Pei Jun,Jin, Chen,Yang, He Chun 대한원격탐사학회 2000 International Symposium on Remote Sensing Vol.16 No.1
Change Vector Analysis (CVA) is a valuable approach for land use/cover change detection, in which how to determine change magnitude threshold and change direction reasonably is already becoming an obstacle for its utility far and wide. Therefore, a new method named Double-Windows Flexible Pace Searching is proposed in this paper aimed to determine change magnitude threshold reasonably and efficiently. As the result from the case study in Haidian District, Beijing , the accuracy rate of change detection is obtained about 87% which suggest Double-Windows Flexible Pace Searching method potential utility in Change Vector Analysis for land use/cover change detection.
( Pei-pei Han ),( Wen-ji Geng ),( Meng-nan Li ),( Shi-ru Jia ),( Ji-long Yin ),( Run-ze Xue ) 한국미생물 · 생명공학회 2021 Journal of microbiology and biotechnology Vol.31 No.9
Microbially induced calcium carbonate precipitation (MICP) has recently become an intelligent and environmentally friendly method for repairing cracks in concrete. To improve on this ability of microbial materials concrete repair, we applied random mutagenesis and optimization of mineralization conditions to improve the quantity and crystal form of microbially precipitated calcium carbonate. Sporosarcina pasteurii ATCC 11859 was used as the starting strain to obtain the mutant with high urease activity by atmospheric and room temperature plasma (ARTP) mutagenesis. Next, we investigated the optimal biomineralization conditions and precipitation crystal form using Plackett-Burman experimental design and response surface methodology (RSM). Biomineralization with 0.73 mol/l calcium chloride, 45 g/l urea, reaction temperature of 45°C, and reaction time of 22 h, significantly increased the amount of precipitated calcium carbonate, which was deposited in the form of calcite crystals. Finally, the repair of concrete using the optimized biomineralization process was evaluated. A comparison of water absorption and adhesion of concrete specimens before and after repairs showed that concrete cracks and surface defects could be efficiently repaired. This study provides a new method to engineer biocementing material for concrete repair.
보리 가공에 의한 Deoxynivalenol의 감소 효과
Pei, Shi-Chun,Lee, Won-Jong,Ryu, Gi-Hyung,Chung, Duck-Hwa 한국식품위생안전성학회 2004 한국식품위생안전성학회지 Vol.19 No.3
Deoxynivalenol (DON)에 오염된 보리의 가공과정에서 도정, 단순가열, 제빵 및 압출성형 등 공정에 의한 DON의 감소 및 파괴에 미치는 영향을 시험하였다 실험에 사용된 보리의 DON오염도는 2.08 ppm이었으며 보리로부터 분리한 DON 생성균은 Fusarium graminearum으로 생성능은 Czapek-Dox Broth 액체배지에서 평균 6.33 ppm이었다. 도정에 의한 DON의 제거 정도는 56.5%였으며 단순가열에 의한 감소는 3.8-32.7%로 나타났다. Extrusion에 의한 제거 정도는 53-59%였으며 제빵과정에서 최종 10.4%의 DON이 제거 된 것으로 나타나 가공 후 상당한 DON이 잔류되어있어 DON의 완전제거 할 수 있는 방법을 새로 개발할 필요가 있다고 사료된다. This study examined the effects of pearling, simple heating, baking and extrusion in processing of barley contaminated with deoxynivalenol (DON) on the reduction or destruction of DON. The DON contamination level of barley used in the experiment was 2.08 ppm. The DON-forming strain isolated from the barley was Fusarium graminearum, and the DON formation potential of which was 6.3 ppm on the average in Czapek-Dox broth medium. The DON removal efficiency of pearling was 56.5%, simple heating 3.8-32.7%, extrusion 53-59%, and baking 10.4%. As a large quantity of DON still remains after processing, it is necessary to develop a new method of removing DON completely.
사배용(Pei Yong Shi),하봉수(Bong Soo Ha),구자홍(Ja Hong Ku) 한국디자인문화학회 2008 한국디자인문화학회지 Vol.14 No.4
This research is to review the potential spread of Asian culture through the design of cultural products. These products have less impact of personal influence of a designer, but increase the use of characters with the universal method to study the pattern tessellation. Starting with theoretical research and prototype production using the patterns and tessellation images of 6 different languages. The test was done based on 72 students from South Korea, China, and Japan. The investigation results of the character pattern tessellation can be summarized in the following three features: First, proposed character patterns are considered important visual images in the age of multiculturalism due to its use of traditional pattern with cultural characteristics, as well as originality and contemporariness. It appears to increase the interest of the Asian culture. Second, the differences between the evaluations of each country can be used as important guidelines and base material for further development in the pattern design. Third, tessellation is a method that can create a visual image, which can contribute to our coexistence. The possibility of the emergence of new visual culture using mathematical methodology, without semantic or ideology, has been confirmed.
Possible Epithelial Ovarian Cancer Association with HPV18 or HPV33 Infection
Zhang, Pei-Pei,Zhou, Lei,Cao, Jia-Shi,Li, Yi-Ping,Zeng, Zhi,Sun, Ni,Shen, Li,Zhu, Hao-Yue,Ruan, Yang,Zha, Wen-Ting,Wang, Xin-Yu,Zhang, Ke-Qiang,Zhang, Ran Asian Pacific Journal of Cancer Prevention 2016 Asian Pacific journal of cancer prevention Vol.17 No.6
The present study was conducted to investigate the prevalence of HPV infection in epithelial ovarian cancer (EOC) in Hunan province. DNA samples were collected from paraffin embedded ovarian tissue from 322 patients with EOC, 99 with ovarian benign tumors and 199 normal persons. The polymerase chain reaction and direct sequencing were used to identify the HPV types in the samples. The relationship between the infection of human papillomavirus (HPV) and the epithelial ovarian carcinoma (EOC) was investigated combined with clinical data. The prevalence of HPV18 and HPV33 in EOC group and benign group was higher than in the normal group. HPV18 and HPV33 may play a role in the development of both EOC and ovarian benign tumor and may participate in the development of EOC with traditional risk factors, family history and abortion, possibly exerting synergistic effects.