نتایج جستجو برای: calcium zirconate

تعداد نتایج: 168329  

Journal: :Journal of Advanced Mechanical Design, Systems, and Manufacturing 2011

2011
Yoshihiro Yamazaki Chih-Kai Yang Sossina M. Haile

A review of the experimental literature documenting water uptake in yttrium-doped barium zirconate in combination with new results obtained here show that much of the observed scatter can be explained in terms of barium deficiency, which furthermore induces a lowering in cell volume. In addition, through a comparison of weight changes under regular and heavy water vapor pressure, strong evidenc...

2011
Krishna Nittala Geoff L. Brennecka Douglas S. Robinson Jacob L. Jones

Heating rate during crystallization is known to affect the final texture obtained in lead zirconate titanate thin films. The transient/intermediate phases present in the thin film during perovskite phase nucleation have been suggested to cause this variation in texture with heating rate. To understand the interrelationship between the transient/intermediate phases and the texture in the final p...

2011
Zhenkui Shen Zhihui Chen Qian Lu Zhijun Qiu Anquan Jiang Xinping Qu Yifang Chen Ran Liu

In this work, we apply nano-embossing technique to form a stagger structure in ferroelectric lead zirconate titanate [Pb(Zr0.3, Ti0.7)O3 (PZT)] films and investigate the ferroelectric and electrical characterizations of the embossed and un-embossed regions, respectively, of the same films by using piezoresponse force microscopy (PFM) and Radiant Technologies Precision Material Analyzer. Attribu...

2000
X. N. Jiang C. Sun X. Zhang B. Xu Y. H. Ye

Ž . Ž . The microstereolithography mSL of lead zirconate titanate PZT thick films on platinum-buffered silicon substrates is reported for Ž . the first time in this paper. Crack-free PZT thick films 80–130 mm thick have been fabricated by laser direct-write UV polymerization from the HDDA-based UV curable PZT suspensions. The characterization of the fired films shows dielectric permittivities o...

2016
Yu Wang Jorge J. Santiago-Aviles Jorge Santiago-Avilés

Piezoresponse imaging technique was transplanted from thin film to probe polarization domains and local properties in single electrospun lead zirconate titanate microfibers. The corresponding electric field distribution was numerically analyzed. The biased conic tip is found to produce a field that peaks on its apex and decreases rapidly toward the bottom metal electrode. A strong field exists ...

Journal: :acta medica iranica 0
zarrin keihani douste department of pediatric neurology, imam khomeini medical complex, tehran university of medical sciences, tehran, iran. mohhamad taghi haghi ashtiani department of pathology, children medical center, tehran university of medical sciences, tehran, iran. mamak shariat family health institute, maternal fetal neonatal research center, tehran university of medical sciences, tehran, iran. fatemeh tehrani family health institute, school of medicine, tehran university of medical sciences, tehran, iran.

convulsion is one of the most common problems in children and hypocalcemia is one the most frequent etiological items in children’s convulsion. corrected qt (qtc) in ekg is prolonged in hypocalcemia, so it can be a useful tool for evaluation of serum ionized calcium. in three groups (first seizure, multiple seizures, without seizure or control ) every 25 cases, qtc, serum ionized ca, total ca, ...

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