Tingyu Zhang

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Smart-phone is a major channel of interpersonal communication. As the rapid development of communication technology, its function is becoming ever more powerful. Meanwhile, people are far more dependent on it. This study aims at investigating how long undergraduate students spend on their smart-phones everyday and the relationship between the time of(More)
Genetic algorithm (GA), as a kind of important intelligence computing tool, is a wide research content in the academic circle and the application domain now. In this paper, for the mutation operation of GA, by combining with the essential feature, from structural and visualized angle, we implement different mutation strategy to individual of different(More)
Genetic algorithm (GA), as a kind of important intelligence computing tool, is a wide research content in the academic circle and the application domain now. In this paper, for the mutation operation of GA, by combining with the essential feature, we establish a genetic algorithm based on schema mutation (denoted by SM-GA, for short). Further, we discuss(More)
The purpose was to optimize the vitrification for porcine embryos cryopreservation. Blastocyst/Morula (5-6th day-embryos) were collected from superovulated Bama mini-pigs (sows/gilts). We compared different cryopreservation methods, cryopreservation tools, thining of zona pellucida (ZP) and recipient breeds on the efficiency of porcine embryo(More)
AIMS AND OBJECTIVES The aim of this study was to evaluate the prevalence and predictors of smoking relapse after percutaneous coronary intervention (PCI) in Chinese patients. BACKGROUND Smoking is considered a vital risk factor for coronary heart disease. Although smoking cessation could decrease the risks of adverse cardiac outcomes, many patients resume(More)
The purpose of this study was to study the effect of three different transfection reagents (Lipofectamine™ LTX & PLUS™, Lipofectamine 2000 and Nano-PAMAM-D) and three different testicular injection methods (rete testicular injection, seminiferous tubules injection and testicular interstitial injection) on the efficiency of production transgenic mice. After(More)
After freeze-drying, the ultrastructure of boar sperms was observed by optical and electron microscopy. The in vitro development ability of the sperm was also examined with intracytoplasmic sperm injection (ICSI). The rate of male pronuclear formation was (68.52%), for cleavage (59.17%) and for blastocyst formation (19.16%) of the trehalose group (0.2(More)
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