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Search Results: 1 - 10 of 193640 matches for " Xiao-Yu Li "
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Bioactivity of neolignans from fructus Schizandrae
Li, Xiao-Yu;
Memórias do Instituto Oswaldo Cruz , 1991, DOI: 10.1590/S0074-02761991000600010
Abstract: fructus schisandrae sinensis baill, a traditional chinese medicine, used as tonic and sedative, has been shown at the beginning of 70's to lower the elevated serum glutamic-pyruvic transaminase (sgpt) levels of patients suffering from chronic viral hepatitis. durign past 20 years, a series of neolignans have been isolated and identified as effective principles. pharmacological studies revealed that they increased liver protein and glicogen synthesis, antagonized liver injuries from ccl4 and thioacetamide. the mechanism of sgpt lowering was considered as a hepato-protective and membrane stabilize action, although inhibition of the activity of liver gpt may also be existed. it was found that some principles of schisandrae have an inducing effect on hepatic microsomal drug-metabolizing enzynme system p-450, thus explained their anti-toxic, anti-carcinogenic and anti-mutagenic effects. a synthetic derivative compound of schisandrin called ddb has most of the above mentioned actions now used widely in chine as a hepato-protective drug with high effectiveness in normalizing liver functions and very low side effects. from schisandrin to synthesized ddb, pointed out a successful way in the development of new drugs from natural products.
Immunomodulating Chinese herbal medicines
Li, Xiao-Yu;
Memórias do Instituto Oswaldo Cruz , 1991, DOI: 10.1590/S0074-02761991000600036
Abstract: traditional chinese medicine always pays close attention to the strengthening of the patient"s general resitence against illness, ther are many chinese herbs used for thousands of years are considered as tonics. animal experiments and modern clinica; trails have shown that quite a number herbs are immunologically active, and most of the tonics are excellent immunomodulating agents, such as polysaccharides or saponins isolated from astragalus mongholicus, acanthopanax senticosus and panax notoginseng, which stimulated mactophages, promoted antibody formation, actived complement and increased t lymphocyte proliferation. moreover, some of them were proved to be anti-irradiative and protected animals from liver intoxications. on the other hand, some anti-inflammative or anti-pyretic hervs such as tripterygium wilfordii, aconitum and artemiasiae species were proved to have immunosuppressive principles, some of them were now used clinically for the treatment of rheumatoid arthritis, chronic nephritis, systemic lupus erythematosis and various skin disorders. pharmacological studies revealed that they have depressant effect on most of the humoral-immunity but not on the cell-mediated immunity. some of them stimulated adrenal cortex functions and prolonged the survival time of transplanted allograft tissues.
Application of complementary and alternative therapies abroad in treatment of climacteric symptoms
Xiao-yu LI
Zhong Xi Yi Jie He Xue Bao , 2009,
Analysis of Ground-State Zero-Field Splitting for Mn2+ in ZnNbOF5 6(H2O) and CoNbOF5 6(H2O)

LI Ju-Fen,KUANG Xiao-Yu,

中国物理快报 , 2011,
The entanglement of some non-two-colorable graph states
Xiao-yu Chen,Li-zhen Jiang
Physics , 2009,
Abstract: We exactly evaluate the entanglement of a six vertex and a nine vertex graph states which correspond to non ''two-colorable'' graphs. The upper bound of entanglement for five vertices ring graph state is improved to 2.9275, less than upper bound determined by LOCC. An upper bound of entanglement is proposed based on the definition of graph state.
Entanglement of stabilizer codewords
Xiao-yu Chen,Li-zhen Jiang
Physics , 2010,
Abstract: The geometric measure, the logarithmic robustness and the relative entropy of entanglement are proved to be equal for a stabilizer quantum codeword. The entanglement upper and lower bounds are determined with the generators of code. The entanglement of dual-containing CSS codes, Gottesman codes and the related codes are given. An iterative algorithm is developed to determine the exact value of the entanglement when the two bounds are not equal.
Graph state basis for Pauli Channels
Xiao-yu Chen,Li-zhen Jiang
Physics , 2010, DOI: 10.1103/PhysRevA.83.052316
Abstract: We introduce graph state basis diagonalization to calculate the coherent information of a quantum code passing through a Pauli channel. The scheme is 5000 times faster than the best known one for some concatenated repetition codes, providing us a practical constructive way of approaching the quantum capacity of a Pauli channel. The calculation of the coherent information of non-additive quantum code can also be greatly simplified in graph state basis.
The coherent information of Pauli channels with coded inputs
Xiao-yu Chen,Li-zhen Jiang
Physics , 2009,
Abstract: The calculating of the coherent information is a fundamental step in obtaining the quantum capacity of a quantum channel. We introduce orthogonal and complete code basis to evaluate the coherent information per channel use when the input is the maximal mixture of stabilizer codewords. In the code basis, the output density matrix is diagonal, the joint output of the system and the auxiliary is block diagonal. The coherent information is worked out by counting the weights of error operators.
Quantum state conversion between continuous variable and qubits systems
Xiao-yu Chen,Liang Han,Li-zhen Jiang
Physics , 2006, DOI: 10.1016/j.physleta.2006.07.022
Abstract: We investigate how quantum state can be converted between continuous variable and qubits systems. Non-linear Jaynes-Cumings interaction Hamiltonian is introduced to accomplish the conversion. Detail analysis on the conversion of thermal state exhibits that pretty good fidelity can be achieved.
The entanglement of damped noon-state and its performance in phase measurement
Xiao-Yu Chen,Li-zhen Jiang,Liang Han
Physics , 2006,
Abstract: The state evolution of the initial optical \textit{noon} state is investigated. The residue entanglement of the state is calculated after it is damped by amplitude and phase damping. The relative entropy of entanglement of the damped state is exactly obtained. The performance of direct application of the damped \textit{noon} state is compared with that of firstly distilling the docoherence damped state then applying it in measurement.
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