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Matching models of left ventricle and systemic artery

Science China(Life Sciences) 1997年第5期40卷 470-476页

作者：柳兆荣吴驰 Department of Applied Mechanics Fudan University Shanghai 200433 China

To reveal how the matching models of the left ventricle and its afterload affect the pressure and flow in the aortic root, the differences between the measured pressure and flow waveforms and those determined by three kinds of matching model were compared. The results showed that, compared with the results by both matching models 1 and 2, the pressure and flow waveforms determined by matching model 3 established in this work were in the closest agreement with the corresponding experimental waveforms, therefore indicating that matching model 3 was a matching model that closely and rationally characterized the match between the left ventricle and the systemic artery.

关键词： left ventricle afterload matching coupling input impedance external power.

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The theoretical study of optical rotatory power.of D2-C76

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Science China Mathematics 1996年第3期39卷 330-336页

作者：姜宗福杨丽佳 Department of Applied Physics National University of Defence Technology Changsha 410073 ChinaDepartment of Applied Physics National University of Defence Technology Changsha 410073 China

Based on the theory of the reaction of electromagnetic field with molecule, a formula for the optical rotatory power.is given. And using this formula, the optical rotatory power.of D2-C76 is determined to be about 1°... 详细信息

关键词： D2-C76 optical rotatory power.

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A rank test of the crossing point of two continuous cdf's

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Chinese Science Bulletin 1995年第15期40卷 1237-1240页

作者：陈桂景李宁宁 Department of Mathematics Anhui University Hefei 230039 China

Let X1,…,Xm and Y1,…,Yn be two independent random simple samples drawn from FandG respectively, which are unknown continuous distributions on R. Considering hypothesistesting problem:

关键词： two-sample test rank statistics Brownian bridge test power.

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Air Purification Using Mists Generated by an Efficient Multi-fluid Mixer

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Journal of Energy and power.Engineering 2016年第10期10卷 643-649页

作者： Michio Sadatomi Akimaro Kawahara Yutaro Kawasaki Department of Advanced Mechanical Systems Graduate School of Science and Engineering Kumamoto University Kumamoto 860-8555 Japan

Sadatomi and Kawahara developed a special twin-fluid atomizer called a multi-fluid mixer, which can spray mists by supplying air alone because water is automatically sucked by a vacuum pressure arisen inside the mixer. In the present paper, firstly, some applications of the mists sprayed by the atomizer are described. Secondly, the performance of the twin-fluid atomizer with best performance was compared with those of the commercial twin-fluid MMA100 type together with the single-fluid swirl type. In the CO2 adsorption tests, mists were sprayed five minutes by the respective types in turn in a test room, and time variations of CO2 concentration in air after the introduction of CO2 in the room were measured at the bottom of the room to compare the CO2 adsorption rates by the mists for the respective cases. In addition, diameters of droplets for the respective types were measured with a microscope. As a result, superiority of our twin-fluid atomizer was confirmed, because 40% droplets were 20 to 40 μm in diameter, and the CO2 adsorption rate by the mists with our twin-fluid atomizer was 25% higher than that with the commercial ones.

关键词： Air purification mist atomizers CO2 adsorption power.

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ACTN3 and AMPD1 Polymorphism and Genotype Combinations in Bulgarian Athletes Performing Wingate Test

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Journal of Sports Science 2015年第1期3卷 1-10页

作者： Peter Atanasov Trayana Djarova Michael Kalinski Lubomir Petrov Radka Kaneva Sam Mugandani Gregori Watson Monem Jemni Department of Theory and Methods of Physical Education Faculty of Pedagogy Paissii Hilendarski Plovdiv University Plovdiv4000 Bulgaria Department of Biochemistry and Microbiology University of Zululand Private Bag XI O01 KwaDlagenzwa 3886 South Africa Department of Applied Health Sciences Murray State University Murray Kentucky 42071-3347 USA Department of Physiology and Biochemistry National Sports Academy Sofia 1700 Bulgaria Molecular Medicine Centre Medical Academy Sofia 1431 Bulgaria Department of Biokinetics and Sport Science University of Zululand KwaDlangezwa 3886 South Africa Department of Rehabilitation and Health Sciences Leeds Metropolitan University Leeds LS1 3HE United Kingdom Department of Sport Science College of Arts and Sciences Qatar University AI Tarfa Doha 2713 Qatar

The aim of the study was to investigate ACTN3 （ct-actinin-3） and AMPD1 （adenosine monophosphate deaminase） polymorphism and genotype combinations in Bulgarian athletes competing in various sports and the relation to peak power.output. A mixed group of athletes （n = 52） competing at national and international level and a matching genetic control group （n = 109） of volunteers were recruited. Participants were genotyped for ACTN3 and AMPD1 by polymerase chain reaction. There were no significant differences in ACTN3 genotype distribution between athletes performing Wingate test （38% RR, 46% RX, 16% XX） and controls （41.2% RR, 46% RX, 12.8% XX）. AMPD1 distribution was （73% CC, 27% CT, 0% TT） and in controls （73.2% CC, 25% CT, 1.8% TT）. Athletes performing Wingate test showed equal 33% frequency of RR/CC and RX/CC combination, and 12% RX/CT. Significantly higher （P 〈 0.05） peak power.output （11.10 W kg1） was found in athletes with RX/CT combination compared to other combinations （range： 8.83-9.71 W kg-1） and in R-power.（RR ＋ RX） and C-power.（CC ＋ CT） dominant models （9.91 W kgl）. Mean power.was higher （P 〈 0.05） in RX/CT combination （8.93 W kg-1） compared to RR/CC （7.75 W kg-1） and RR/CT （7.95 W kgl）. In conclusion, the low frequency of T AMPD1 allele in Bulgarian athletes might indicate that this mutant allele is related to the physical performance. The prevalence of R ACTN3 and C AMPD1 alleles suggests that they could contribute to anaerobic performance. Higher peak power.in Wingate test is associated with RX/CT genotype combination and R- and C-power.dominant models.

关键词： Genetics, metabolism, exercise, performance, peak power.

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