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Flexible Composites: Carbon Nanotube Fiber Based Stretchable Conductor (Adv. Funct. Mater. 7/2013)
Zu, Mei,Li, Qingwen,Wang, Guojian,Byun, Joon‐,Hyung,Chou, Tsu‐,Wei WILEY‐VCH Verlag 2013 Advanced Functional Materials Vol.23 No.7
<P>Stretchable conductors based on buckled carbon nanotube (CNT) fibers are fabricated using a simple prestraining‐then‐buckling approach. The primary deformation mode of the CNT fibers is lateral kinking. This buckling shape is quite different from the sinusoidal shape observed previously in systems that are otherwise similar. As reported by Tsu‐Wei Chou and co‐workers on page 789, the prepared CNT fiber/poly(dimethylsiloxane) (PDMS) composite film shows excellent stability and repeatability in performance as a stretchable conductor. </P>
Structure and Energetics of Half-monolayer Hydrogen on W(110)
한원근,Mei-Yin Chou 한국물리학회 2010 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.57 No.1
We have studied the hydrogen ordering on the W(110) surface by using the first-principles pseudopotential approach based on the local density approximation. The calculations for a halfmonolayer coverage of hydrogen indicate that the three-fold hollow site is favored for this coverage, similar to the full-coverage case. A p(1 × 2) ordering is found to have the lowest energy, in agreement with low-energy electron diffraction(LEED) results. However, another type of ordering, p(2 × 1), is also close in energy. The possibility of a phase coexistence and a subsequent change in the diffraction pattern are discussed. We find small displacements that are in opposite directions for two inequivalent surface W atoms in one unit cell. Without a uniform lateral shift of surface atoms, the LEED intensities calculated using the theoretical structure parameters still exhibit an asymmetry in integer spots at this coverage, resulting from the ordering of hollow-site hydrogen.
The number of cecidomyiid insect galls affects the photosynthesis of Machilus thunbergii host leaves
Meng-Yuan Huang,Hsueh-Mei Chou,Yung-Ta Chang,Chi-Ming Yang 한국응용곤충학회 2014 Journal of Asia-Pacific Entomology Vol.17 No.2
Previous studies of the impacts of galls on host leaf photosynthesis do not suggest any general trends, with a reportedrange of effects from negative to positive. In this study, photosynthetic characteristics such as chlorophyllfluorescence (Fv/Fm), photosynthetic capacity, and stomata conductancewere determined in two types of fruitlikegalls (red ovoid and green obovate galls) induced by Daphnephila taiwanensis and Daphnephila sueyenae, respectively,in order to investigate whether the number of galls affects the photosynthesis of galled leaves ofMachilus thunbergii. In 2008, chlorophyll fluorescence and photosynthetic capacity were negatively correlatedwith gall numbers, non-significantly and significantly, respectively,whereas stomata conductancewas positivelybut non-significantly correlated with gall numbers. In 2009, photosynthesis capacity and stomata conductancewere negatively, but non-significantly, correlated with gall numbers. Results imply that photosynthesis in M. thunbergii leaves is slightly affected by the number of cecidomyiid insect galls, and that the higher the gall number,the greater the negative effect that galls have on host leaf photosynthesis and subsequent infection.
Ya-Ru Liang,Mei-Chen Yang,Yao-Kuang Wu,I-Shiang Tzeng,Pei-Yi Wu,Shiang-Yu Huang,Chou-Chin Lan,Chin-Pyng Wu 한국간호과학회 2020 Asian Nursing Research Vol.14 No.1
Purpose: Some patients with respiratory failure fail initial weaning attempts and need prolonged mechanical ventilation (MV). Prolonged MV is associated with many complications and consumption of heathcare resources. Objective weaning indices help staffs to identify high-potential patients for weaning from the MV. Traditional weaning indices are not reliable in clinical practice. Transitional percentage of minute volume (TMV%) is a new index of the work of breathing. This study aimed to investigate the utility of TMV% in the prediction of weaning potential. Methods: This study was prospectively performed including all patients with prolonged MV. Researchers recorded their demographics, TMV%, respiratory parameters, Acute Physiology and Chronic Health Evaluation II score, and laboratory data upon arrival at the respiratory care center. The factors associated with successful weaning were analyzed. Results: Out of the 120 patients included, 84 (70.0%) were successfully weaned from MV. Traditional weaning indices such as rapid shallow breathing index could not predict the weaning outcome. TMV% was a valuable parameter as patients with a lower TMV%, higher tidal volume, higher hemoglobin, lower blood urea nitrogen, and lower Acute Physiology and Chronic Health Evaluation II scores had a higher rate of successful weaning. TMV%, tidal volume, and HCO3- levels were independent predictors of successful weaning, and the area under the curve was .79 in the logistic regression model. Conclusion: TMV% is a novel and effective predictor of successful weaning. Patients with lower TMV% had a higher MV weaning outcome. Once patients with a high potential for successful weaning are identified, they should be aggressively weaned from MV as soon as possible.