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| 1 | 基于多场景模型的沙漠-绿洲交错带林草生态网络模拟显示文摘沙漠的迅速扩张对生态脆弱地区的社会经济和环境构成了巨大威胁。选取位于沙漠绿洲地区的内蒙古自治区巴彦淖尔市磴口县作为研究区,以遥感影像数据和DEM数据为基础,设置11种发展策略,利用引力模型和MCR模型构建了森林草地生态网络(FG生态网络)多场景仿真模型,提取出不同发展策略下的生态网络,并利用复杂网络理论分析了11种发展策略中网络的拓扑结构和统计特征。结果表明,发展策略的不同会造成不同的生态基质,本文构建的模型可以模拟受基质变化影响的斑块之间的相互作用。随着发展策略中经济发展的比重增加,研究区内连接生态斑块的生态网络逐渐遭到破坏,部分生态斑块之间的连接方式发生了变化,并且网络连通性和核数、平均节点连接数等指标呈下降趋势。(0.9,0.1)发展策略中网络密度略有增加,而其他策略中网络密度随经济发展比重的增加而逐渐减小。经济发展不一定导致该地区生态环境恶化,在现有自然条件下,研究区仍有经济发展空间,但发展空间有限。识别出36个关键生态节点,识别出研究区骨架廊道总长度为1236.89km。建议加强关键生态节点、骨架廊道的生态建设与保护,实行较严格的生态管控措施。 | 苏凯 于强 YANGDi 张启斌 杨斓 孙小婷 | 2019 | 农业机械学报2019，50，9： | 9 |
| 2 | Research progresses of SOI optical waveguide devices and integrated optical switch matrix显示文摘SOI (silicon-on-insulator) is a new material with a lot of important perform- ances such as large index difference, low transmission loss. Fabrication processes for SOI based optoelectronic devices are compatible with conventional IC processes. Having the potential of OEIC monolithic integration, SOI based optoelectronic devices have shown many good characteristics and become more and more attractive recently. In this paper, the recent progresses of SOI waveguide devices in our research group are presented. By highly effective numerical simulation, the single mode conditions for SOI rib waveguides with rectangular and trapezoidal cross-section were accurately investigated. Using both chemical anisotropic wet etching and plasma dry etching techniques, SOI single mode rib waveguide, MMI coupler, VOA (variable optical attenuator), 2×2 thermal-optical switch were successfully designed and fabricated. Based on these, 4×4 and 8×8 SOI optical waveguide integrated switch matrixes are demonstrated for the first time. | YUJinzhong CHENShaowu XIAJinsong WANGZhangtao FANZhongchao LIYanping LIUJingwei YANGDi CHENYuanyuan | 2005 | Science in China(Series F)2005，48，2： | 4 |
| 3 | Theoretical studies on tautomerism of benzoylcyclohexane1,3-dione and its derivatives显示文摘 | HUANGM L ZOUJ W YANGDY | 2002 | J Mol Struct2002，321，： | 1 |
| 4 | Promoterregionmethylationandreducedexpressionofthrombospondin-1afteroxygen-glucosedeprivationinmurinecerebralendothelialcells显示文摘 | HuCJ ChenSD YangDI etal | 2006 | JCerebBloodFlowMetab2006，26，12： | 1 |
| 5 | Multi-frequency magnetic resonance elastography of the pancreas:measurement reproducibility and variance among healthy volunteers显示文摘Background Patients with chronic pancreatitis often have irreversible pancreatic insufficiency before a clinical diagnosis.Pancreatic cancer is a fatal malignant tumor in the advanced stages.Patients having high risk of pancreatic diseases must be screened early to obtain better outcomes using new imaging modalities.Therefore,this study aimed to investigate the reproducibility of tomoelastography measurements for assessing pancreatic stiffness and fluidity and the variance among healthy volunteers.Methods Forty-seven healthy volunteers were prospectively enrolled and underwent two tomoelastography examinations at a mean interval of 7 days.Two radiologists blindly and independently measured the pancreatic stiffness and fluidity at the first examination to determine the reproducibility between readers.One radiologist measured the adjacent pancreatic slice at the first examination to determine the reproducibility among slices and measured the pancreas at the second examination to determine short-termrepeatability.The stiffness and fluidity of the pancreatic head,body,and tail were compared to determine anatomical differences.The pancreatic stiffness and fluidity were compared based on sex,age,and body mass index(BMI).Results Bland–Altman analyses(all P>0.05)and intraclass correlation coefficients(all>0.9)indicated near perfect reproducibility among readers,slices,and examinations at short intervals.Neither stiffness(P=0.477)nor fluidity(P=0.368)differed among the pancreatic anatomical regions.The mean pancreatic stiffness was 1.45±0.09 m/s;the mean pancreatic fluidity was 0.83±0.06 rad.Stiffness and fluidity did not differ by sex,age,or BMI.Conclusion Tomoelastography is a promising and reproducible tool for assessing pancreatic stiffness and fluidity in healthy volunteers. | Si-Ya Shi Liqin Wang Zhenpeng Peng Yangdi Wang Zhi Lin Xuefang Hu Jiaxin Yuan Li Huang Shi-Ting Feng Yanji Luo | 2022 | Gastroenterology Report2022，10，1： | 0 |
| 6 | Tourism Development of the Dong Villages in Tongdao Dong Nationality Autonomous County显示文摘This paper introduced unique ethnic customs in Tongdao Dong Nationality Autonomous County, analyzed the current situation and problems of local tourism development, proposed the government-dominated development concept, the construction of benefi t-sharing mechanism, the integration of tourism resources, and the promotion of scenic areas' attraction, so as to push forward tourism development of the Dong villages, and further enhance the co-development of local economy and society. | YUAN Min ZHU Wenwen PENG Yangdi | 2015 | Journal of Landscape Research2015，7，6： | 0 |
| 7 | 开学季显示文摘 | YANGDI(摄影) | 2021 | 朝气MilKenfant2021，，3： | 0 |
| 8 | Biological Characteristics of Trehalose and Its Protective Effect on Food Fermentation Starters during Lyophilization显示文摘This paper reviewed the unique biological function of trehalose and its mechanism of stabilizing biological macromolecules and the research progress in the protective effect of trehalose on lactic acid bacteria fermentation starters during lyophilization in food production.The application of trehalose in food industry was prospected. | Yuhong YANG Yangdi ZHANG | 2023 | Agricultural Biotechnology2023，12，4： | 0 |
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