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Search Results: 1 - 10 of 27112 matches for " Tu Yong "
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Integral operators and univalent functions
Kiah Wah Ong,Sin Leng Tan,Yong Eng Tu
Tamkang Journal of Mathematics , 2012, DOI: 10.5556/j.tkjm.43.2012.215-221
Abstract: In this paper, we define two new integral operators $L^k$ and $L_k$ which are iterative in nature. We show that for $f(z)=z+a_2z^2+ cdots +a_nz^n +cdots$ with radius of convergence larger than one, $L^kf(z)$ and $L_kf(z)$ when restricted on $E={z:|z|<1}$ will eventually be univalent for large enough $k$. We then show that these are the best possible results by demonstrating that there exists a holomorphic function $T(z)$ in normalized form and with radius of convergence equal to one such that $L^kT(z)$ and $L_kT(z)$ fail to be univalent when restricted to $E$ for every $kin mathbb{N}$.
A Novel Miniature Stripline FED Antenna with Band-Notched Function for UWB Applications
Sheng Tu;Yong-Chang Jiao;Yue Song;Zheng Zhang
PIER Letters , 2009, DOI: 10.2528/PIERL09061105
Abstract: A novel compact strip-line fed UWB antenna with band-notched characteristic is proposed. By employing a balanced antipodal structure and strip-line feed, the size of this antenna has been reduced to only 23 mm×27.5 mm with the dielectric substrate of relative permittivity 2.65. Meanwhile, a slot is added onto the radiating patch of the mid metalisation layer to realize the band-notched function, by tuning the length of which suitable rejected frequency band can be obtained. According to the measured results, the proposed antenna has a large bandwidth totally satisfying the requirement of UWB applications (3.1~10.6 GHz) with good stable omnidirectional radiation patterns and gains except in the rejected frequency band (4.9~6.2 GHz). Details of this antenna are described, and the experimental results of the constructed prototype are given, too.
Effects of cyclooxygenase-2 on human esophageal squamous cell carcinoma
Li Zhang,Yong-Dong Wu,Peng Li,Jun Tu
World Journal of Gastroenterology , 2011, DOI: 10.3748/wjg.v17.i41.4572
Abstract: AIM: To study the relationship between the cyclooxygenase (COX)-2 gene and the proliferation and apoptosis of esophageal squamous carcinoma EC109 cells. METHODS: The techniques of RNA interference (RNAi) and cell transfection, as well as the levels of oncogenicity in nude mice, were used to study the role of COX-2 in the esophageal squamous carcinoma cell (ESCC) line EC109. Following RNAi and transfection, Western blotting analysis was used to determine the expression of the COX-2 protein. The 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl-tetrazolium bromide (MTT) reduction assay was used to evaluate cell growth, and flow cytometry was used to detect cell apoptosis. RESULTS: Western blotting analysis demonstrated that COX-2 expression was significantly reduced in EC109 cells treated with COX-2-specific short interfering RNA (siRNA) but was increased in EC109 cells transfected with COX-2. Furthermore, COX-2 siRNA treatment inhibited cell proliferation (P < 0.01) and induced apoptosis in EC109 cells, as determined by an MTT assay and by flow cytometry, respectively. In contrast, transfected COX-2 led to increased cell proliferation (P < 0.05) and decreased apoptosis in EC109 cells. In addition, combination treatment of cells with COX-2 siRNA and aspirin had a synergistic effect (P < 0.01). For experiments measuring tumorigenicity, xenograft tumors of a greater volume and weight were found in the COX-2 group compared with other groups (P < 0.05). A large dose of aspirin inhibited tumor growth in nude mice effectively (P < 0.05), and the rate of tumor suppression was 51.8% in the high-dose aspirin group. CONCLUSION: COX-2 plays a very critical role in ESCC carcinogenesis, and COX-2 siRNA combined with aspirin has the potential to be an anticancer therapy for the treatment of ESCC.
简支梁桥车桥耦合振动响应

梁安宁, 涂勇
LIANG Anning
,TU Yong

- , 2016,
Abstract: 车桥耦合系统以车轮与桥面的接触点为界限,将车桥耦合整体系统划分为车辆系统和桥梁系统两个独立系统,建立车辆运动平衡方程与桥梁运动平衡方程,通过桥梁接触点的位移协调条件及车辆在桥面接触点产生的相互作用力进行将两者进行联系,将其联立即为车桥耦合运动平衡方程组,通过采用迭代法进行计算求出车桥耦合系统的振动响应。 更多还原
Some Success Applications for Local-Realism Quantum Mechanics: Nature of Covalent-Bond Revealed and Quantitative Analysis of Mechanical Equilibrium for Several Molecules  [PDF]
Runsheng Tu
Journal of Modern Physics (JMP) , 2014, DOI: 10.4236/jmp.2014.56041
Abstract:

With local realism quantum mechanics established, we can simply describe an extranuclear electron as a large-scale elastic ring with an elastic phase trajectory. Several small molecules can thus be strictly calculated through the logical method of establishing an accurate mechanical equilibrium equation describing the molecular structure, then solving the strict solutions of this mechanical equation and the corresponding wave equation. The results (bond length and dissociation energy) are in good agreement with observed results—i.e. if it is only coincidence, there should not be such a high probability of agreement between calculated and observed results. The method of local realism quantum mechanics is no longer the semi-empirical method. The method to calculate the electron pairing energy uses a linear regression of the ionization energy obtained through experiment. Nonetheless, it is exciting that there are diatomic molecules such as Na2, K2 and asymmetric HF molecules that possess a non-zero non-bonding electron number in the calculation examples. Moreover, the molecular structures are very intuitive, and the calculation method is much simpler than existing methods.

Quantum Inverse Measurement Theory Contributing to the Birth of Interpretation System of Quantum Mechanics of Local-Realism and Determinism  [PDF]
Runsheng Tu
Journal of Modern Physics (JMP) , 2017, DOI: 10.4236/jmp.2017.88088
Abstract: The existing interpretation of quantum mechanics is contrary to common sense. The existing quantum mechanical interpretation schemes are puzzling. The confusing theory is unconvincing, and needs to be amended and completed. The successful interpretation program of quantum mechanics of local-realism and determinism is undoubtedly the most attractive. Preparing the interpretation program deserves to be chosen as a research goal. It is a very good premise to believe that an object particle consists of light-knot of monochromatic waves. According to this premise, the erroneous recognition about “superposition principle, wave-particle duality and uncertainty principle” can be corrected. Under this premise, above research goal is achieved by establishing, applying quantum mechanics inverse measurement theory, adhering to the principle that there must be a complete empirical chain in the derivation process of experimental conclusion, and using the side effect caused by accompanying-light to explain the diffraction experiment of object particles. Electron secondarily diffraction and other experiments directly prove that there is the measurement (observation) which may not destroy quantum coherence. The diffraction experiments of all kinds of particles show that the Keeping and playing of the coherence of moving particles in the vacuum have nothing to do with their previous experience. These are the existing experiments, to be found, that support the theory of quantum inverse measurements. The verification experiment of quantum inverse measurement is designed. The absolute superiorities of quantum inverse measurement and the new view of measurement of quantum mechanics are listed. These superiorities are that: it has the characteristics of local-realism and determinism; it is not contrary to common sense and there is no confusing place; it can predict several phenomena that cannot be predicted by other theories. A solid theoretical foundation has been laid for “correctly understanding the microscopic world” and establishment of local realism quantum mechanics.
Contrast induced nephropathy after percutaneous coronary intervention: risk factors and preventive strategy
Contrast induced nephropathy after percutaneous coronary intervention: risk factors and preventive strategy

Yan Tu,Hua Zheng,Yue-Gang Wang,Yong Li,
Yan Tu
,Hua Zheng,Yue-Gang Wang,Yong Li

老年心脏病学杂志(英文版) , 2009,
Abstract: Objective To analyze the risk factors and clinical outcome of contrast induced nephropathy (CIN) in patients with coronary artery disease (CAD) after percutaneous coronary intervention (PCI) and discuss its prevention.Methods Fifty-four patients with CIN among 729 patients who received PCI were retrospectively studied and the related risk factors,cardiovascular events and preventive strategy were analyzed.Results CIN was strongly associated with pre-procedure chronic renal failure,diabetes mellitus and large-dose contrast.The incidence of cardiac mortality and major adverse cardiac events 1 year after PCI in CIN group was higher than that in group without CIN.Conclusion Chronic renal failure,diabetes mellitus and dosage of contrast agent were three independent risk factors of CIN.CIN could affect the patients' prognosis.A well overall perioperative management of CAD patients following PCI,especially hydration therapy,is the most important strategy for prevention of CIN .
An Optimization Method for Protocol Conformance Test Sequence Based on Multiple UIO
一种基于多UIO的一致性测试序列优化方法

WU Yong,HE Qian-Hua,TU Yong-Jun,
吴永
,贺前华,涂用军

计算机科学 , 2007,
Abstract: A key problem in protocol conformance test is to design test sequence which cost low and detect fault easily. Based on the traversal algorithm of rural Chinese postman, a suitable UIO sequence is chosen from multiple UIO sequenceby using the technology of
Synthesis and Biological Evaluation of New 4β-5-Fu-substituted 4'-Demethylepipodophyllotoxin Derivatives
Fu-Min Zhang,Xiao-Jun Yao,Xuan Tian,Yong-Qiang Tu
Molecules , 2006, DOI: 10.3390/11110849
Abstract: A series of new 4β-5-Fu-substituted 4'-demethylepipodophyllotoxin derivatives were synthesized and evaluated, together with some previously prepared ones, for their cytotoxic activities against four tumor cell lines (HL60, P388, A549 and BEL7402). Three of these compounds exhibited superior in vitro anticancer activity against P388 and A549 than the reference compound etoposide. In addition, the partition coefficients (P) of all the new and previously synthesized derivatives were determined.
Construction of sperm-specific lactate dehydrogenase DNA vaccine and experimental study of its immunocontraceptive effect on mice
Yong Chen,Duo Zhang,Na Xin,YongZhong Xiong,Ping Chen,Bo Li,XiangDong Tu,FengHua Lan
Science China Life Sciences , 2008, DOI: 10.1007/s11427-008-0035-7
Abstract: Lactate dehydrogenase C4 (LDHC4) is a key enzyme for sperm metabolism. It is distributed specifically in testis and is highly immunogenic. In this study, two DNA vaccines pVAX1-hLDHC and pVAX1-mLDHC were constructed by inserting coding sequences of human and mice LDHC4 into the eukaryotic expression vector pVAX1. The production of LDHC4 specific antibodies was induced in the sera of vaccinated mice and the reproductive tract secretions of vaccinated female mice through immunization by mucosal surface instillation. Furthermore, the antibody titer increased with the times of immunization. In the mating experiment, the number of newborns of the vaccinated mice reduced significantly and some immunized female mice even lost the ability to bear any offsprings, suggesting that the difference between the immunized and control mice was statistically significant. Sperm agglutination analysis indicated that both the antisera from immunized mice and the reproductive tract secretions of vaccinated female mice could agglutinate normal sperms. Results of immunohistochemistry showed that the antibodies present in the sera of immunized mice and the reproductive tract secretions of vaccinated female mice could specifically react with LDHC4 antigen, which mainly locates in the cytoplasm, acrosome membrane externa and acrosome capsule of the sperm. Taken together, our results indicated that the constructed contraceptive DNA vaccines did yield immunocontraceptive effects on mice and this would enable clinical trials in near future.
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