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Search Results: 1 - 10 of 23108 matches for " Rongwei Liang "
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A Clinical Research about the Intermittent Medication Treatment on the Female Urogenital Tract Mycoplasma Infection  [PDF]
Guosheng Su, Xiaolu Luo, Rongwei Liang, Lianhua Pan
Open Journal of Obstetrics and Gynecology (OJOG) , 2014, DOI: 10.4236/ojog.2014.413110
Abstract: Object: To explore a better treatment on the female urogenital tract mycoplasma infection so as to ensure the health of female reproduction. Method: 115 female patients with urogenital tract mycoplasma infection are selected, including 63 patients acted as a group for intermittent medication treatment; that is to say, the ones that are confirmed to be sensitive drugs to those 63 patients are chosen, and let them take this medication for 15 days and stop taking it for 7 days and after that continue to take it for 10 days. The other 52 patients in the other group which acts as a contrast to the former group are cured with a course of conventional treatment for 15 - 21 days. Results: As to those 115 female patients with urogenital tract mycoplasma infection, 43 patients get relapsed, and 27 patients of them are in the contrast group and 16 patients are in the treatment group. There is obvious difference on the contrast of relapse rate between the treatment group and contrast group, and they are P < 0.01. But as to the sensitive testing results of 10 common antibiotic medicines, there are cases of illness of relapse in those 2 groups, and the rate of drug sensitivity in the treatment group is higher than that of the contrast group. Between treatment group and contrast group, there is obvious difference in the sensitivity of the drugs, P < 0.05 average. Conclusion: When the female patients with urogenital tract mycoplasma infection are cured with a traditional treatment, because of the side effects of drugs, they are not likely to take medicines that are required to making the cure rate become lower and the relapse rate become higher. But intermittent medication is designed with the half-life period of medicine, which makes the medicine can be digested and absorbed easily, and the cure rate is high and the relapse rate is low. With this research we found a more effective method of the treatment on the female urogenital tract mycoplasma infection and showed the clinical significance in intermittent medication.
A Report on the Breast Development of Healthy Females of the Right Age in Different Regions  [PDF]
Guosheng Su, Zhongru Lin, Lianhua Pan, Rongwei Liang, Binlin Bi, Xiaolu Luo, Zhaoju Fang, Ju Zhao
Open Journal of Obstetrics and Gynecology (OJOG) , 2014, DOI: 10.4236/ojog.2014.413108
Abstract: Objective: To observe the state of breast development of the healthy females of the right age in different regions. Methods: We randomly chose 1540 of 18 - 25 years old unmarried or married healthy females of the right age from both Guangxi and Yunnan provinces separately for regular checkups. Also we took notes on these females’ height and chest circumference and other indexes. According to the perfect chest circumference of Chinese females in relation to height, namely this relational expression—Standard Circumference = Height × 0.53, we evaluated the basic state of breast development of females from the two areas and then presented related research conclusions. Results: After the statistical analyses on every index of 1540 cases of healthy females of the right age from the two areas each, we found that the breast development of healthy women of the right age in Yunnan is more perfect than that of Guangxi, and in comparison to every index, there is a remarkable difference, and that is, P < 0.01. Conclusions: The state of breast development of healthy females of the right age is different in different areas. Some breasts are especially big; some are a little bit smaller; some are proper and some are relatively flat; also some breasts are strong while some are pendulous. In a word, there are some differences. These differences exist not only inChinabut also in every part of the world. The female whose chest circumference tends to be more close to the perfect is more likely to be more confident and more active, and also her life is full of sensibility and charm.
Projective spectrum in Banach algebras
Rongwei Yang
Mathematics , 2008,
Abstract: For a tuple $A=(A_0, A_1, ..., A_n)$ of elements in a unital Banach algebra ${\mathcal B}$, its {\em projective spectrum} $p(A)$ is defined to be the collection of $z=[z_0, z_1, ..., z_n]\in \pn$ such that $A(z)=z_0A_0+z_1A_1+... +z_nA_n$ is not invertible in ${\mathcal B}$. The pre-image of $p(A)$ in ${\cc}^{n+1}$ is denoted by $P(A)$. When ${\mathcal B}$ is the $k\times k$ matrix algebra $M_k(\cc)$, the projective spectrum is a projective hypersurface. In infinite dimensional cases, projective spectrums can be very complicated, but also have some properties similar to that of hypersurfaces. When $A$ is commutative, $P(A)$ is a union of hyperplanes. When ${\mathcal B}$ is reflexive or is a $C^*$-algebra, the {\em projective resolvent set} $P^c(A):=\cc^{n+1}\setminus P(A)$ is shown to be a disjoint union of domains of holomorphy. Later part of this paper studies Maurer-Cartan type ${\mathcal B}$-valued 1-form $A^{-1}(z)dA(z)$ on $P^c(A)$. As a consequence, we show that if ${\mathcal B}$ is a $C^*$-algebra with a trace $\phi$, then $\phi(A^{-1}(z)dA(z))$ is a nontrivial element in the de Rham cohomology space $H^1_d(P^c(A), \cc)$.
$N_{\p}$-type quotient modules on the torus
Keiji Izuchi,Rongwei Yang
Mathematics , 2007,
Abstract: Structure of the quotient modules in $\hh$ is very complicated. A good understanding of some special examples will shed light on the general picture. This paper studies the so-call $N_{\p}$-type quotient modules, namely, quotient modules of the form $\hh\ominus [z-\p]$, where $\p (w)$ is a function in the classical Hardy space $H^2(\G)$ and $[z-\p]$ is the submodule generated by $z-\p (w)$. This type of quotient modules serve as good examples in many studies. A notable feature of the $N_{\p}$-type quotient module is its close connections with some classical single variable operator theories.
Projective Spectrum and Cyclic Cohomolgy
Patrick Cade,Rongwei Yang
Mathematics , 2013,
Abstract: For a tuple $A=(A_1,\ A_2,\ ...,\ A_n)$ of elements in a unital algebra ${\mathcal B}$ over $\mathbb{C}$, its {\em projective spectrum} $P(A)$ or $p(A)$ is the collection of $z\in \mathbb{C}^n$, or respectively $z\in \mathbb{P}^{n-1}$ such that the multi-parameter pencil $A(z)=z_1A_1+z_2A_2+\cdots +z_nA_n$ is not invertible in ${\mathcal B}$. ${\mathcal B}$-valued $1$-form $A^{-1}(z)dA(z)$ contains much topological information about $P^c(A):=\mathbb{C}^n\setminus P(A)$. In commutative cases, invariant multi-linear functionals are effective tools to extract that information. This paper shows that in non-commutative cases, the cyclic cohomology of ${\mathcal B}$ does a similar job. In fact, a Chen-Weil type map $\kappa$ from the cyclic cohomology of ${\mathcal B}$ to the de Rham cohomology $H^*_d(P^c(A),\ \mathbb{C})$ is established. As an example, we prove a closed high-order form of the classical Jacobi's formula.
A 460 MHz Doherty Amplifier for IMT-Advanced System
Rongwei Zhou;Yue Dong;Jingfu Bao
PIER Letters , 2012, DOI: 10.2528/PIERL12052206
Abstract: A 2-way symmetrical Doherty power amplifier (PA) with high efficiency is presented. This amplifier delivers 49.2 dBm (83 W) of saturated output power and 63% drain efficiency with 38.2 dB of power gain at 460MHz. The drain efficiency at 6 dB backed-off power level shows about 62%. After digital pre-distortion (DPD) system corrected, about 48% power-added efficiency (PAE) at 42.2 dBm (16.6 W) average output power has been demonstrated, while achieving -52 dBc (-28 dBc before linearization) Adjacent Channel Leakage Ratio (ACLR) at 20 MHz offset using a LTE-Advanced input signal with 6.5 dB peak to average ratio (PAR) to meet the IMT-Advanced system requirements. We also used a π type structure network based on lumped elements to replace the traditional Doherty amplifier 1/4λ transmission line, and compared the performance.
Trajectory Planning and Optimal Lateral Stability Control under Multiple Barriers for Intelligent Vehicle  [PDF]
Zhonghua Zhang, Xuecai Yu, Zhijie Jin, Yejun Ying, Rongwei Hua, Xuwei Lin
World Journal of Engineering and Technology (WJET) , 2015, DOI: 10.4236/wjet.2015.33011
Abstract: Based on analysis and evaluation on the circular, cosine type, constant-speed offset type and ladder type lane change trajectory, this paper proposes an intelligent vehicle lane change trajectory model under multiple barriers, proposes its dynamic constraints in the light of the cellular automata theory, obtains the desired lane change trajectory using this method, and finally changes into a simple coefficient selection problem. Secondly, based on the quadratic optimal control theory, this paper proposes a state space analysis method of intelligent vehicle lateral control, and designs an optimal controller for lateral stability of H2 vehicles. The computer simulation results show that compared with other vehicle trajectory methods, the method in this paper is able to simply and rapidly describe the trajectory, and can describe the intelligent vehicle lane change trajectory under a variety of situations, wherein the controller is reliable and capable of fast convergence.
Giant Carrier Mobility in Single Crystals of FeSb2
Rongwei Hu,V. F. Mitrovic,C. Petrovic
Physics , 2008, DOI: 10.1063/1.2926662
Abstract: We report the giant carrier mobility in single crystals of FeSb2. Nonlinear field dependence of Hall resistivity is well described with the two-carrier model. Maximum mobility values in high mobility band reach ~10^5 cm^2/Vs at 8 K, and are ~10^2 cm^2/Vs at the room temperature. Our results point to a class of materials with promising potential for applications in solid state electronics.
Magnetism, Superconductivity and Stoichiometry in Single Crystals of Fe1+y(Te1-xSx)z
Rongwei Hu,Emil S. Bozin,C. Petrovic
Physics , 2009, DOI: 10.1103/PhysRevB.80.214514
Abstract: We report synthesis of high quality Fe1+y(Te1-xSx)z single crystals and a comprehensive study of structural, magnetic and transport properties. There is high sensitivity to material stoichiometry which includes vacancies on the Te(S) site. Our results reveal competition and coexistence of magnetic order and percolative superconductivity for x >= 0.03, while zero resistivity is acheived for x >= 0.1.
Anisotropy in the magnetic and electrical transport properties of Fe1-xCrxSb2
Rongwei Hu,V. F. Mitrovic,C. Petrovic
Physics , 2008, DOI: 10.1103/PhysRevB.76.115105
Abstract: We have investigated anisotropy in magnetic and electrical transport properties of Fe1-xCrxSb2 (0<= x <=1) single crystals. The magnetic ground state of the system evolves from paramagnetic to antiferromagnetic with gradual substitution of Fe with Cr. Anisotropy in electrical transport diminishes with increased Cr substitution and fades away by x=0.5. We find that the variable range hopping (VRH) conduction mechanism dominates at low temperatures for 0.4<= x <=0.75.
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