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经过多组对比实验，通过XRD、AFM、SEM等表征手段优化了BST薄膜的制备工艺。结合BST基薄膜器件的电极制备、微结构加工制备了太赫兹频段电可调的频率选择表面。通过太赫兹测试系统验证了在太赫兹频段BST薄膜的可调性，在电场作用下通带频率可以从0.85 THz调节到0.87 THz，结合仿真研究给出了确定铁电薄膜在THz频段介电参数的方法。相关研究可用于精确测定铁电薄膜在THz频段的介电特性，为铁...
Flow of Time in BST/BCONT Models and Related Semantical Observations
branching branching spacetime branching continuation temporal logic flow of time non-classical logic
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2016/6/15
First the Branching Space-time and Branching Continuations models are briefly presented. We compare their properties with the traditional definition of a~Flow of Time from physics and we point out the...
CHF3/Ar 等离子体刻蚀BST 薄膜的机理研究
钛酸锶钡 反应离子刻蚀 光电子能谱 等离子体
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2013/8/27
采用XPS 方法, 通过对刻蚀前后BST(钛酸锶钡)薄膜表面成分、元素化合态以及原子相对百分含量分析, 探讨了CHF3/Ar 等离子刻蚀BST 薄膜的RIE(反应离子刻蚀)机理. 研究结果表明, 在刻蚀过程中, 金属Ba, Sr, Ti 和F 等离子体发生化学反应并生成相应的氟化物且部分残余在薄膜表面, 因为TiF4 具有高挥发特性, 残余物几乎没有钛氟化物. 然而, XPS 表明Ti-F 仍然少...
La2O3掺杂BST/Mg2TiO4微波复合陶瓷的制备和性能
无机非金属材料 La2O3掺杂 固相烧结法 BST复合陶瓷 微波损耗 调谐率
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2011/12/30
用固相烧结法制备掺杂La2O3的Ba0.55Sr0.45TiO3/Mg2TiO4微波复合陶瓷, 研究了掺杂对其微观结构、微波(f=10 GHz)介电性能和调谐率的影响。结果表明: 当掺杂La2O3量(质量分数)为1.2%时, La3+进入BST晶格, 且抑制了BST/Mg2TiO4中Ti从+4向+3价转化; La2O3的掺入比较明显地降低了介电常数和微波损耗, 当掺杂La2O3量为1.2%时介电常...
Dielectric Behavior of Ceramic (BST)/Epoxy Thick Films
Dielectric Behavior Ceramic (BST)/Epoxy Thick Films
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2010/12/3
Composite materials were made by mixing powders of Ba1−xSrxTiO3 (x=0.2 and 0.4) ceramics and epoxy resin with various volume fractions (vol%). Dielectric measurements of these composites were pe...
Supplementation of Holstein Cows with Low Doses of Bovine Somatotropin (bST) Prepartum and Postpartum Affects Physiological Adaptations and Milk Production
bST Holstein Cows Hormones Milk Production Transition Period
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2016/4/27
Major objectives were to evaluate effects of three schemes of bST-supplementation of Holstein cows (142.8 mg/14 d, POSILAC) during the prepartum and/or postpartum periods through 63 d (3 d) of...
BST和BZT系列固溶体的均相沉淀法合成及表征
均相沉淀法 掺杂 BST/BZT固溶体
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2007/12/19
摘要 采用均相沉淀法, 在低温(90 ℃)、低pH值(8～9)、短时间(3～3.5 h)条件下成功地合成了系列Ba1－xSrxTiO3 (BST)和BaZrxTi1－xO3 (BZT)固溶体. 通过XRD、化学分析法、SEM和AFM等手段表征了固溶体的结构、组成和形貌. 结果表明: BST, BZT的晶胞常数随组成呈线性关系, 符合Vegard定律, 该系列固溶体为完全互溶固溶体, 且目标产物组成...
BST/Si-NPA复合薄膜的湿敏电容特性研究（Capacitive Humidity Sensing Properties of BST/Si-NPA Composite Thin Films）
钛酸锶钡 硅纳米孔柱阵列 复合薄膜 湿敏电容特性
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2010/8/25
本文采用溶胶-凝胶法和旋涂工艺，以Si-NPA为衬底，制备了钛酸锶钡(BST)/Si-NPA复合薄膜，并对其形貌、结构及湿敏电容特性进行了研究。结果表明，环境的相对湿度(RH)、测试信号频率和退火温度均对湿敏电容特性具有较大影响。在100 Hz的测试信号频率下，当环境的相对湿度从11%上升到95%时，BST/Si-NPA湿敏元件的电容增量可达起始值的4 400%，显示出较高的湿度敏感性。同时，元件...
Effects of Bovine Somatotropin (bST) Administration Combined with Controlled Internal Drug Release (CIDR) on Embryo Quality and Pregnancy of Hanwoo (Korean Native Beef Cattle) during Commercial Embryo Transfer Program
Bovine Somatotropin Embryo Transfer Program Corpus Luteum Plasma Hormonal Level
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2016/4/25
Effects of recombinant bovine somatotropin (bST) on plasma hormonal concentration, embryo quality, and pregnancy rate were examined during the superovulation and synchronization treatment in donor and...
Responses of Holstein Cows to Different Bovine Somatotropin (bST) Treatments during the Transition Period and Early Lactation
Holstein Cows Milk Production bST Doses DMI Transition Period Hormones
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2016/4/15
Major objective was to evaluate three doses of bST (POSILAC짰) injected into Holstein cows during the transition period and through 56 d of lactation for potential to improve DMI, BCS, BW, metab...