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Artificial Muscles from Fishing Line and Sewing Thread
Haines, Carter S.,Lima, Má,rcio D.,Li, Na,Spinks, Geoffrey M.,Foroughi, Javad,Madden, John D. W.,Kim, Shi Hyeong,Fang, Shaoli,Jung de Andrade, Mô,nica,Gö,ktepe, Fatma,Gö,ktepe, &Oum American Association for the Advancement of Scienc 2014 Science Vol.343 No.6173
<P><B>Toward an Artificial Muscle</B></P><P>In designing materials for artificial muscles, the goals are to find those that will combine high strokes, high efficiency, long cycle life, low hysteresis, and low cost. Now, <B>Haines <I>et al.</I></B> (p. 868; see the Perspective by <B>Yuan and Poulin</B>) show that this is possible. Twisting high-strength, readily available polymer fibers, such as those used for fishing lines or sewing thread, to the point where they coil up, allowed construction of highly efficient actuators that could be triggered by a number of stimuli.</P>
Harvesting electrical energy from carbon nanotube yarn twist
Kim, Shi Hyeong,Haines, Carter S.,Li, Na,Kim, Keon Jung,Mun, Tae Jin,Choi, Changsoon,Di, Jiangtao,Oh, Young Jun,Oviedo, Juan Pablo,Bykova, Julia,Fang, Shaoli,Jiang, Nan,Liu, Zunfeng,Wang, Run,Kumar, P American Association for the Advancement of Scienc 2017 Science Vol.357 No.6353
<P>Mechanical energy harvesters are needed for diverse applications, including self-powered wireless sensors, structural and human health monitoring systems, and the extraction of energy from ocean waves. We report carbon nanotube yarn harvesters that electrochemically convert tensile or torsional mechanical energy into electrical energy without requiring an external bias voltage. Stretching coiled yarns generated 250 watts per kilogram of peak electrical power when cycled up to 30 hertz, as well as up to 41.2 joules per kilogram of electrical energy per mechanical cycle, when normalized to harvester yarn weight. These energy harvesters were used in the ocean to harvest wave energy, combined with thermally driven artificial muscles to convert temperature fluctuations to electrical energy, sewn into textiles for use as self-powered respiration sensors, and used to power a light-emitting diode and to charge a storage capacitor.</P>
Fan Jiayao,Xu Huiqing,Liu Bing,Jing Fangyuan,He Qingfang,Zheng Shasha,Shi Haining,Jiao Lefei,Fan Chunhong 한국유전학회 2022 Genes & Genomics Vol.44 No.7
Background: TP73-AS1 is a novel antisense long noncoding RNA and plays an important role in cell proliferation and cancer development. However, the link between TP73-AS1 and colorectal cancer (CRC) has not yet been reported. Objective: To explore the association of genetic variants in TP73-AS1 and its expression with CRC susceptibility and prognosis. Methods: A case-control study (including 507 CRC cases and 503 controls) and bioinformatics analysis were conducted. Results: rs9800 polymorphism was significantly related to higher risk in CRC [adjusted odds ratio (AOR) = 1.33, 95% confidence interval (CI) = 1.02-1.75, P = 0.034 in heterozygote codominant model]. There was no difference between TP73-AS1 polymorphisms and different tumor node metastasis (TNM) stages in the adjusted model. Moreover, TP73-AS1 expression level was positively related to different TNM stages. After adjusted for age, gender and TNM, higher TP73-AS1 expression levels were related to shorter recurrence-free survival time [hazard ratio (HR) = 1.66, 95% CI = 1.02-2.71, P = 0.043]. Conclusion: TP73-AS1 polymorphisms and expression may be associated with susceptibility and prognosis of CRC.