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H_2^+-Like Impurities Confined by Spherical Quantum Dots:a Candidate for Charge Qubits

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Communications in Theoretical Physics 2008年第9期50卷 767-770页

作者： KANG Shuai liu yi-ming SHI Ting-Yun Department of Physics and Information Engineering Hunan Institute of Humanities Science and Technology Loudi 417000 China State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics Wuhan Institute of Physics and Mathematics The Chinese Academy of Sciences Wuhan 430071 China Department of Physics Shaoguan University Shaoguan 512005 China

We have calculated the electron energy of the ground and lower excited states for H_2^+-like impurity statesconfined in finite spherical quantum dots in *** on the characteristics of energy levels,we have proposed ascheme for realizing charge qubit composed by the the ground and the first excited states of this confined double donorsystem for the first *** the proposed scheme the charge qubit is coded in terms of the located electronic states.

关键词： spherical quantum dot charge qubit B-splines H2^+-like impurities

New Way to Synthesize DW286——a Novel Fluoronaphthyridone Antibacterial Agent

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Chemical Research in Chinese Universities 2011年第6期27卷 981-983页

作者： FENG Lian-shun liu ming-liang ZHANG yi-bin GUO Hui-yuan Institute of Medicinal Biotechnology Chinese Academy of Medical Sciences and Peking Union Medical College Beijing 100050 P. R. China

A new route for the synthesis of DW286, 7-[3-（aminomethyl）-4-（methoxyimino）-3-methyltetrahy- dro-1H-1-pyrrolyl]-1-cyclopropyl-6-fluoro-4-oxo-1,4-dihydro[1,8]naphthyridine-3-carboxylic acid hydrochloric acid salt, is described. In the presence of benzadehyde, DW286 was prepared by the direct condensation of 7-chloro-1-cyclopropyl-6-fluoro-4-oxo-1,4-dihydro[1,8]naphthyridine-3-carboxylic acid with new pyrrolidine derivative 7 which could be obtained by routine reactions.

关键词： DW286 Benzadehyde Direct condensation

The ultratrace detection of crystal violet using surface enhanced Raman scattering on colloidal Ag nanoparticles prepared by electrolysis

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Chinese Chemical Letters 2009年第6期20卷 711-715页

作者： Ren ming liu yi Pu Kang Xing Fa Zi ming Jun Feng Man Cheng Min Zhen Si Application Institute of Spectroscopy Technology Chuxiong Normal University Chuxiong 675000 China

Highly active, stable and affordable surface enhanced Raman scattering （SERS） substrates were obtained by electrolyzing a mixture of AgNO3 （4 × 10^-4 mol/L） and Na3C6H5OTH2O （6 × 10^-5 mol/L） for 1, 2, 3 and 4 h at 7 V. With crystal violet （CV） as a test molecule, a portable Raman spectrometer with 785 nm laser excitation was employed to carry out the SERS detection. Colloidal Ag nanoparticles prepared by electrolyzing for 3 h with the particle size of （65 ±17） nm is a perfect SERS substrate for the ultratrace detection of CV, which displayed an enhancement factor of ca. 1.3 × 10^8 and the detection limit of CV is down to ca. 10-15 mol/L （ca. 10^-4 ppb） with 10^-1 mol/L KBr as aggregating agent. Thus, this SERS substrate will provide a hopeful foreground in ultratrace detection. Meanwhile, it will provide a possibility to bring Raman analysis out of the laboratory to process in situ, real-time detection and identification.

关键词： SERS Ultratrace detection Crystal violet Silver nanoparticle Electrolysis

Pharmacokinetics of Mequindox and Its Metabolites in Swine

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Agricultural Sciences in China 2011年第12期10卷 1968-1976页

作者： liu yi-ming liu ying-chun DING Huan-zhong FANG Bing-hu YANG Fan SHAN Qi ZENGZhen-ling Laboratory of Veterinary Pharmacology College of Veterinary Medicine South China Agricultural University Guangzhou 510640 P.R.China Shanghai Veterinary Research Institute Chinese Academy of Agricultural Sciences Shanghai 200232 P.R.China

The present study was carried out to investigate the pharmacokinetics of mequindox （MEQ）, a new synthetic quinoxaline 1,4-dioxide derivative and its two main metabolites M1 [2-isoethanol mequinoox], M2 [2-isoethanol 1-desoxymequindox] in healthy swine. MEQ （10 mg kg-1 body weight） was administered to nine healthy cross-bread swine via oral, intramuscular, and intravenous routes in a randomized 3x3 crossover design with a 1-wk washout period. A sensitive high-performance liquid chromatography （HPLC） method was used for the determination of plasma concentrations of MEQ and its metabolites M1 and M2. Plasma concentration versus time profiles of MEQ and its metabolites, M1 and M2, were analyzed by noncompartmental analysis using WinNonlin 5.2 software. The mean maximum concentrations （Cmax） of M1 and M2 after intravenous administration of MEQ were （5.27±1.59） lag mL-1 at 1.78 h and （1.01±0.29） μg mL-1 at 0.92 h, respectively. The mean maximum concentrations （Cmax） ofMEQ, M1, and M2 were found to be （6.96±3.23）, （6.61±1.56）, and （0.78 ±0.25） lag mL-1 respectively at 0.15, 1.61, and 1.30 h after intramuscular administration of MEQ, respectively and （0.75±0.45）, （6.90±1.52）, and （0.62±0.21） lag mL-1, respectively at 0.40, 1.57, and 2.00 h, respectively after oral administration of MEQ. The apparent elimination half-lives （b2） ofMEQ, M1, and M2 were （0.84±0.35）, （7.57±3.93）, and （9.56±6.00） h, respectively after intravenous administration of MEQ; （0.50±0.25）, （6.30±3.00）, and （5.94±2.54） h, respectively after intramuscular administration of MEQ; and （1.64± 1.17）, （5.59±1.93）, and （16.25±10.27） h, respectively after oral administration of MEQ. The mean areas under the plasma concentration-time curve （AUC0-∝） of MEQ, M1, and M2 were （4.88±1.54）, （36.93±17.50）, and （5.16±94） μg h mL-1, respectively after intravenous administration of MEQ; （4.18±0.76）, （48.25±20.82）, and （4.88±2.21） μg h mL-1 , respectively after intramuscular administration of MEQ; and （1.01±0.40）, （48.83±20.7

关键词： mequindox metabolites pharmacokinetics HPLC swine

Elimination of ceftiofur hydrochloride residue in postpartum cows' milk after intramammary infusing at dry-off

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Journal of Integrative Agriculture 2018年第6期17卷 1234-1240页

作者： KANG Ji-jun liu yi-ming ZHAO Lei-lei XU Fei CHEN Xiao-jie YAN Xing LI Xiu-bo Feed Research Institute Chinese Academy of Agricultural Sciences

The purpose of this study was to investigate the residue elimination of ceftiofur hydrochloride in milk of postpartum cows after intramammary infusing at dry-off. An ultra-high performance liquid chromatography-tandem mass spectrometry （UPLC-MS/ MS） method was developed and validated to detect ceftiofur hydrochloride residue in milk. Through preprocessing, ceftiofur hydrochloride was derivatized into a more stable compound dedfuroyl ceftiofur acetamide （DCA） for further analysis. The linear range of DCA was 0.1 to 50 μg kg-1. Average recoveries of DCA were 82.52-105.86％. The intra-day and interday coefficients of variation （CV） were 2.95-9.82 and 6.41-7.43％, respectively. The limit of detection （LOD） and limit of quantitation （LOQ） scores were 0.05 and 0.1 μg kg-1, respectively. These parameters showed this method was reliable and valid. Twelve cows were administrated 10 mL ceftiofur hydrochloride by intramammary infusion （corresponding to 500 mg ceftiofur） to each udder after the last milking before the dry-off period. Milk was collected from each udder of cow at 12, 24, 36, 48, 60 and 72 h after calving and was mixed for each time point and each cow, then subjected to UPLC-MS/MS analysis. The results showed, the DCA concentrations in all milk samples were less than LOQ and the maximum residue limit （MRL） 100 μg kg-1, which suggested the withdrawal time of ceftiofur hydrochloride intramammary infusion used for preventing and curing mastitis in dry cows was 0 day. The study provided guidance for the clinical applications of ceftiofur hydrochloride intramammary infusion （dry cow）.

关键词： ceftiofur hydrochloride intramammary infusing dry cows milk residue

Androgen deprivation therapy through bilateral orchiectomy, increased metabolic risks

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Asian Journal of Andrology 2011年第6期13卷 833-837页

作者： Juan-Jie Bo Chao Zhang Lian-Hua Zhang Ping liu Jian-Jun Sha Jian-Wei Lv Dong-ming liu yi-Ran Huang Zheng Li Department of Urology Renji Hospital Shanghai Jiaotong University School of Medicine Shanghai 200001 China

Prostate cancer is one of the most common malignancies in men. Previous research has determined that androgen deprivation therapy （ADT） may be accompanied by an unfavourable metabolic profile. In this prospective study, 133 men were recruited, including 46 prostate cancer patients who had undergone bilateral orchiectomy and been on flutamide （the ADT group）, 37 men with prostate cancer who had undergone radical prostatectomy （the non-ADT group） and 50 normal control subjects （the control group）. All subjects were followed for at least 12 months. From baseline to 3 months, men in the ADT group had increased levels of fasting serum insulin and low-density lipoprotein compared to the other two groups （P〈0.05）. No obvious changes were found in the other parameters （P〉0.05）. After 12 months, men in the ADT group had increased levels of waist circumference, fasting serum insulin and glucose, total cholesterol, high-density lipoprotein and low-density lipoprotein compared to the other two groups （P〈0.05）. Additionally, the morbidity rate of metabolic syndrome in the ADT group was higher （P〈0.05） compared to the other two groups. ADT through surgical castration for men with prostate cancer may be associated with unfavourable metabolic changes. The benefits of the therapy should be balanced prudently against these risks.

关键词： androgen deprivation therapy bilateral orchiectomy metabolic changes metabolic syndrome prostate cancer

A Density Functional Study of the Gold Cages MAu_(16) (M=Si, Ge, and Sn)

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Chinese Physics Letters 2013年第7期30卷 162-166页

作者： TANG Chun-Mei ZHU Wei-Hua ZHANG Ai-Mei ZHANG Kai-Xiao liu ming-yi College of Science Hohai UniversityNanjing 210098

Relativistic density functional calculations are performed to explore the promise of MAu_(16)(M=Si,Ge,and Sn)clusters as magic clusters and building blocks in developing cluster-assembled materials.C_(1) and C_(s),two isomers of SiAu_(16),GeAu16 and SnAu_(16) with M(Ge or Sn)at the center of the cage,named,respectively,as SiAu_(16)–C_(1),SiAu_(16)–C_(s),GeAu16-center,and SnAu_(16)-center,are calculated to be the most *** Au–M bond should have both ionic and covalent *** static linear polarizabilities and first-order hyperpolarizabilities are found to be sensitive to the delocalization of the valence electrons of the M atom,as well as their structures and shapes.

关键词： materials. isomers

HBT Parameters and Space-Momentum Correlations in Relativistic Heavy-Ion Collisions

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Chinese Physics Letters 2001年第12期18卷 1568-1570页

作者： ZHANG Jing-Bo HUO Lei ZHANG Wei-Ning LI Xin-Hua XU Nu liu yi-ming Department of Physics Harbin Institute of TechnologyHarbin 150001 Center of Theoretical Nuclear Physics National Laboratory of Heavy Ion AcceleratorLanzhou 730000 Nuclear Science Division Lawrence Berkeley NationM LaboratoryCA 94720USA

Using the relativistic quantum molecular dynamics approach, with a correlation after-burner, the physics of the transverse momentum dependence of the Hanbury-Brown and Twiss parameters is studied for Au t Au, Si + Si and p + p collisions at the centre-of-mass energy v s=200 AGeV. The results indicate that the space-momentum correlations would affect such dependence in both heavy-ion and elementary collisions. The size parameters as a function of the transverse mass mt are sensitive to the degree of space-momentum correlations.

关键词： momentum transverse elementary

Immunoassay of chemical contaminants in milk:A review

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Journal of Integrative Agriculture 2015年第11期14卷 2282-2295页

作者： XU Fei REN Kang YANG Yu-ze GUO Jiang-peng MA Guang-peng liu yi-ming LU Yong-qiang LI Xiu-bo National Feed Drug Reference Laboratories Feed Research InstituteChinese Academy of Agricultural Sciences Beijing General Station of Animal Husbandry China Rural Technology Development Center Ministry of Science and Technology of China

The detection of chemical contaminants is critical to ensure dairy safety. These contaminants include veterinary medicines, antibiotics, pesticides, heavy metals, mycotoxins, and persistent organic pollutants （POPs）. Immunoassays have recently been used to detect contaminants in milk because of their simple operation, high speed, and low cost. This article describes the latest developments in the most important component of immunoassays--antibodies, and then reviews the four major substrates used for immunoassays （i.e., microplates, membranes, gels, and chips） as well as their use in the detection of milk contaminants. The paper concludes with prospects for further aDDlications of these immunoassavs.

关键词： milk chemical contaminants immunoassay antibodies