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南美斑潜蝇的快速冷耐受及其生理生化效应 被引量:3
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作者 张君怡 张小香 +2 位作者 宋英 常亚文 杜予州 《应用昆虫学报》 CAS CSCD 北大核心 2021年第6期1376-1384,共9页
【目的】为明确南美斑潜蝇Liriomyza huidobrensis经快速冷耐受(Rapid cold hardening,RCH)处理后的基础耐寒性的变化,以探究南美斑潜蝇RCH的生理生化机制。【方法】根据初步筛选的胁迫温度和驯化时间的结果,将南美斑潜蝇蛹直接进行低... 【目的】为明确南美斑潜蝇Liriomyza huidobrensis经快速冷耐受(Rapid cold hardening,RCH)处理后的基础耐寒性的变化,以探究南美斑潜蝇RCH的生理生化机制。【方法】根据初步筛选的胁迫温度和驯化时间的结果,将南美斑潜蝇蛹直接进行低温胁迫(Coldshock,CS)和先进行RCH驯化后再进行低温胁迫(RCH+CS)后,记录南美斑潜蝇蛹的羽化率;利用热电偶方法测定驯化后和未驯化蛹的过冷却点;分别采用气相色谱-质谱仪联用法(GC-MS)、液相色谱-质谱联用技术(HPLC-MS)及分光光度计测定不同处理模式下南美斑潜蝇的脂肪酸、糖类以及甘油的含量。【结果】经RCH驯化后再进行低温胁迫的南美斑潜蝇蛹的羽化率显著增加(由20.00%增至45.56%,F_(3.8)=10.37,P<0.05),但过冷却点(SCP)却没有明显变化(未驯化-19.90℃,驯化后-20.10℃,t=0.703,P>0.05);RCH驯化后南美斑潜蝇体内棕榈油酸含量增加(由5.96%增至19.26%,F_(3.8)=52.717,P<0.05),棕榈酸含量下降(由24.32%降至2.94%,F_(3.8)=65.456,P<0.05),总不饱和脂肪酸和饱和脂肪酸比值升高(由2.17增至10.94,F_(3.8)=64.347,P<0.05);RCH驯化后南美斑潜蝇体内的海藻糖(由5.46μg/mg增至7.71μg/mg,F_(3.8)=9.912,P<0.05)和甘油的含量升高(由1.177μg/mg增至1.314μg/mg,F_(3.8)=6.428,P<0.05),而葡萄糖含量下降(由1.84μg/mg降至1.22μg/mg,F_(3.8)=191.298,P<0.05)。【结论】南美斑潜蝇RCH与脂肪酸的不饱和度增加以及海藻糖、葡萄糖和甘油这3种抗冻物质均有关。 展开更多
关键词 南美斑潜蝇 快速冷耐受 耐寒性 脂肪酸 抗冻物质
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下颌牙槽嵴重度吸收的帕金森无牙颌患者修复一例 被引量:1
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作者 宋颖 邓天政 +3 位作者 刘冰 谭新伟 马楚凡 李颖 《口腔颌面修复学杂志》 2024年第4期292-298,共7页
目的:通过生物功能性修复系统(下文简称为吸附性义齿,Biofunctional Prosthetic System,BPS)结合种植体辅助固位修复下颌牙槽嵴重度吸收的帕金森无牙颌患者。方法:通过种植导板辅助33、43位点种植体植入,利用电子面弓的Jaw Relation功能... 目的:通过生物功能性修复系统(下文简称为吸附性义齿,Biofunctional Prosthetic System,BPS)结合种植体辅助固位修复下颌牙槽嵴重度吸收的帕金森无牙颌患者。方法:通过种植导板辅助33、43位点种植体植入,利用电子面弓的Jaw Relation功能、Articulator功能以及肌电功能,辅助获取帕金森无牙颌患者准确的颌位关系,完成上颌吸附性义齿修复+下颌locator基台辅助固位的种植覆盖义齿修复。结果:上下颌全口义齿戴入后,口内检查、咬合力测试和电子面弓肌电测试均显示出,在面型恢复等美观方面及发音、固位、咬合等功能方面获得良好的修复效果。结论:通过电子面弓Jaw Relation功能、Articulator功能、肌电功能的使用有助于获得帕金森无牙颌患者准确的颌位信息;种植体与BPS相结合的方法有助于牙槽嵴重度吸收的无牙颌患者获得兼具美观和功能的全口义齿。 展开更多
关键词 无牙颌 帕金森 低平牙槽嵴 数字化
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A Study of Microstructures in Helium-implanted 4H-SiC by RBS-channeling and TEM
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作者 ZhangChonghong SunYoumei +5 位作者 songying DuanJinglai T.Shibayama K.Sakaguchi H.Takahashi ShenDingyu 《近代物理研究所和兰州重离子加速器实验室年报:英文版》 2002年第1期61-62,共2页
Silicon carbide is a technologically important material due to its superior mechanical and electronic properties. The understanding of defect production in helium-implanted silicon carbide is important for the vise of... Silicon carbide is a technologically important material due to its superior mechanical and electronic properties. The understanding of defect production in helium-implanted silicon carbide is important for the vise of this material in nuclear energy devices or for the proposed getting technique of electronic devices of silicon carbide. Much less is known about helium behavior in silicon carbide than in silicon and metals. Our recent study with transmission electron microscopy (TEM) indicated that the formation behavior of helium precipitates i.e. 展开更多
关键词 氦离子注入 碳化硅晶体 显微结构 RBS沟道 透射电镜研究 TEM 串联加速器
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Exploration on Strategies of Strengthening Construction Technology Management of Architectural Decoration Engineering
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作者 songying 《外文科技期刊数据库(文摘版)工程技术》 2022年第6期086-089,共4页
In recent years, with the continuous improvement of the national economic level, the development scale of the construction industry has gradually expanded and the overall development situation has gradually stabilized... In recent years, with the continuous improvement of the national economic level, the development scale of the construction industry has gradually expanded and the overall development situation has gradually stabilized. In the construction engineering industry, the attention paid to decoration engineering has gradually increased, and the overall position has also gradually strengthened. In the process of modern social development, the public's requirements for architecture are gradually strict, which not only requires it to be able to meet the basic living needs and use needs, but also requires it to have a certain aesthetic value and be able to meet the aesthetic needs of the public. In order to effectively achieve these goals, engineers must focus on promoting the decoration engineering construction management, effectively improve the decoration construction effect, and promote the sustainable development of the industry. Next, the article discusses the strategies to strengthen the construction technology management of architectural decoration engineering. 展开更多
关键词 architectural decoration CONSTRUCTION technical management
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