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Synthesis and Crystal Structure of Methyl(7,7-Dimethyl-2-amino-4-(4-chlorophenyl)-5-oxo-5,6,7,8-tetrahydro-4H-benzo-[b]-pyran-3-yl)Carboxylate

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Chinese Journal of Structural Chemistry 2002年第6期21卷 597-600页

作者： WANGXiang－shan SHIDa－qing 等 DepartmentofChemistry XuzhouNormalUniversityXuzhou221009China ToWhomcorrespndenceshouldbeaddressed

The title compound methyl (7,7-dimemyl-2-amino-4-(4-chlorophenyl)-5-oxo-5,6,7,8-tetrahydro-4H-benzo-[b]-pyran-3-yl) carboxylate (C19H20ClNO4, Mr = 361.81) was synthesized and crystallized. The crystal belongs to triclinic, space group P 1 with a = 8.519(2), b = 10.346(2), c = 11.481(3) A, α = 108.16(1), β = 107.78(2), γ= 91.83(2)°, Z = 2, V = 906.5(3) A3, Dc = 1.326 g/cm3, μ(MoKα) = 0.234 mm-1, F(000) = 380, R = 0.0467 and wR = 0.1270 for 3142 observed reflections (I > 2σ(I)). X-ray analysis reveals that the C(7), C(8), C(9), O(1), C(10) and C(11) atoms form a six-membered ring which adopts a boat conformation. In the ring, the distances of C(8)-C(9) and C(10)-C(11) are 1.332(3) and 1.357(3) A, respectively, which indicates that they are C=C double bonds. Another six-membered ring (C(8)-C(9)-C(15)-C(14)-C(13)-C(12)) adopts the half-chair confonnation. In addition, there are intermolecular hydrogen bonds in the crystal structure.

关键词： crystal structure benzo-[b]-pyran synthesis

On distributed event-based optimization for shared economy in cyber-physical energy systems

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Science China(Information Sciences) 2018年第11期61卷 11-13页

作者： qing-shan JIA Junjie WU Center for Intelligent and Networked Systems (CFINS) Department of AutomationBeijing National Research Center for Information Science and Technology (BNRist)Tsinghua University

Dear editor,In order to accommodate the sharp increase in energy consumption and environmental pollution, it is important to coordinate the supply and the demand. This has become a key feature in a cyberphysical energy system (CPES), where the energy consumer and supplier share information with each other to improve the overall energy efficiency and therefore to reduce the environmental *** economy has risen sharply across the globe and becomes an effective model to improve the efficiency in an investment. Examples include but are

关键词： Figure EBO On distributed event-based optimization for shared economy in cyber-physical energy systems

The Physical Property of Susceptibility for One-Dimensional Ferrimagnetic Chain with Alternating Spins 1 and 1/2 in Finite Magnetic Field

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Communications in Theoretical Physics 2001年第11期36卷 620-622页

作者： xie Gang HAN Ru-shan Mesoscopic Physics Lab and Department of Physics Peking UniversityBeijing 100871China Mesoscopic Physics Lab and Department of PhysicsPeking UniversityBeijing 100871China

We further calculate the dependence of xT on T in high magnetic fields,where X denotes susceptibility and T is temperature,using our previous research work - Green function's decoupling approximate approach,for the one-dimensional ferrimagnetic chain with alternating spins 1 and 1/*** find a linear correlation in certain range of magnetic field between the temperature of xT maximum and the magnetic ***,we simply analyze its physical meaning by our approach.

关键词： one-dimensional spin chain,susceptibility,ferrimagnetic,Green function

Association of Lysosome Associated Protein Transmembrane 4 Beta Gene Polymorphism with the Risk of Pancreatic Cancer

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Chinese Journal of Cancer Research 2010年第4期22卷 291-295页

作者： shan Wang qing-Yun Zhang Key Laboratory of Carcinogenesis and Translational Research（Ministry of Education） Clinical Laboratory Peking University Cancer Hospital ＆ Institute Beijing 100142 China

Objective： Lysosome associated protein transmembrane 4 beta （LAPTM4B） was originally identified as a gene in human hepatocellular carcinoma （HCC）. It was successfully cloned by fluorescence differential display, rapid amplification of cDNA ends （RACE） and reverse transcription polymerase chain reaction （RT-PCR）. Previous study showed that the novel gene played an important role in the occurrence, development, migration and prognosis of tumors. Pancreatic cancer is an aggressive malignancy with the majority of patients dying within one year after diagnosis. This study tries to find out the relationship between lysosome associated protein transmembrane 4 beta gene polymorphism and the susceptibility of pancreatic cancer. Methods： A case-control study was conducted in China, including 58 pancreatic cancer cases and 156 healthy controls. Human genomic DNA was used as the template, polymerase chain reaction （PCR） was used to detect the distribution of LAPTM4B genotype. Analyses Odds ratio （OR） and corresponding 95% confidence interval （95%CI） with logistic regression were performed. Results： Two alleles of LAPTM4B generated three kinds of genotypes in population, ＊1/1, ＊1/2, and ＊2/2. The genotype frequency of ＊1/1, ＊1/2 and ＊2/2 in the pancreatic cancer group were 41.4%, 44.8% and 13.8% respectively, which were not significantly different from those of healthy group （47.4%, 42.9%, 9.6%）（P=0.773, P=0.291）. Also the ＊2 allele frequency of LAPTM4B among pancreatic cancer had no significantly difference with the controls （P=0.354）. When compared to the ＊1 allele, the people with ＊2 allele had no increased risk of pancreatic cancer. Conclusion： The gene polymorphism of LAPTM4B may not influence the susceptibility of pancreatic cancer.

关键词： Polymorphism Lysosome associated protein transmembrane 4 beta Pancreatic cancer Susceptibility

Effect of Lattice Distortion on Charge Order in Manganites at Doping x=0.5

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Communications in Theoretical Physics 2005年第1期43卷 179-186页

作者： WANGHai-Long TIANGuang-shan LINHai-qing SchoolofPhysics PekingUniversityBeijing100871China SchoolofPhysics PekingUniversityBeijing100871China／／DepartmentofPhysicstheChineseUniversityofHongKongShatinN.T.HongKongChina

In the present paper, we continue our investigation on the antiferromagneticorigin of the charge order observed in the halt-doped manganese. By introducing aSu-Schrieffer-Heeger (SSH) type of perturbation interaction to the double-exchange Hamiltonian, wecalculate again its ground-state phase diagram at Glling x = 0.5 by the unrestricted real-spaceHartree-Fock approximation method. We find that, as the SSH electron-phonon interaction increases,the charge order parameter decreases to zero rapidly but the CE-type antiferromagnetic order becomesmore stable. In other words, the charge order is much more fragile than the CE-type or theNeel-type antiferromagnetic orders under the electron-phonon perturbation. These results support theproposed theory in the recent publications that the charge order in these systems is induced by theantiferromagnetic correlations.

关键词： manganites charge ordered phases antiferromagnetic correlation

Charge Ordering Due to Antiferromagnetic Correlation in Quarter-Filled Manganites

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Communications in Theoretical Physics 2004年第3X期42卷 475-480页

作者： WANGHai-Long TIANGuang-shan LINHai-qing SchoolofPhysics PekingUniversityBeijing100871China DepartmentofPhysics ChineseUniversityofHongKongShatinN.T.HongKongChina

In the present paper, we study the zero-temperature phase diagram of the doped perovskite manganitesat filling x = 0.5 by the real-space Hartree-Fock approximation method. Our purpose is to resolve a controversialissue arising recently on the origin of the charge ordered phases in these systems. We find that the antiferromagneticsuperexchange interaction between the localized spins plays the central role in producing the concerned phases. Ourresults confirm some speculations on this issue.

关键词：反铁磁相关性水锰矿哈特里-福克近似理论巨磁阻效应相位图磁相结构

Metabolic Dysfunction-associated Fatty Liver Disease (MAFLD) and Viral Hepatitis

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Journal of Clinical and Translational Hepatology 2022年第1期10卷 128-133页

作者： Xiaolin Wang qing xie Department of Infectious Diseases Ruijin HospitalShanghai Jiao Tong University School of MedicineShanghaiChina

A new definition of metabolic dysfunction-associated fatty liver disease(MAFLD)was proposed in *** change from nonalcoholic fatty liver disease(NAFLD)to MAFLD highlights the metabolic abnormalities that accompany fatty *** diagnosis of MAFLD does not require exclusion of secondary causes of liver diseases and alcohol ***,MAFLD may coexist with other types of liver diseases,such as viral hepatitis,a disease that remains the most common cause of liver disease-related *** the increasing prevalence of MAFLD,patients with coincidental MAFLD and viral hepatitis are frequently encountered in clinical *** this review,we mainly summarize the mutual relationship between hepatitis B/C and systematic metabolism dysfunction related to *** discuss the impact of MAFLD on progression of viral hepatitis and the *** unaddressed clinical problems related to concomitant MAFLD and viral hepatitis are also identified.

关键词： Metabolic dysfunction-associated fatty liver disease Chronic hepatitis B Chronic hepatitis C

Synthesis and Crystal Structure of Ethyl 2,7,7-Trimethyl-4-(4'-methylphenyl)- 5-oxo-1,4,5,6,7,8-hexahydroquinoline-3- carboxylate in Aqueous Medium

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Chinese Journal of Structural Chemistry 2005年第6期24卷 696-700页

作者： SHIDa-qing MOUJie ZHUANGQi-Ya WANGXiang-shan DepartmentofChemistry XuzhouNormalUniversityXuzhou221116China／／KeyLaboratoryofBiotechnologyonMedicalPlantsofJiangsuProvinceXuzhou221116China DepartmentofChemistry XuzhouNormalUniversityXuzhou221116China

The title compound (C22H27NO3) was obtained by the reaction of 4-methylbenzal- dehyde, dimedone, ethyl acetoacetate and ammonium acetate in water in the presence of triethyl- benzylammonium chloride (TEBA). The crystal is of orthorhombic, space group Pbcn with a = 18.242(2), b = 15.651(1), c = 14.207(2) ?, V = 4056.15(64) ?3, Mr = 353.45, Z = 8, Dc = 1.158 g/cm3, μ = 0.076, λ(MoKα) = 0.71073 ? and F(000) = 1520. The final R = 0.0453 and wR = 0.0436 for 1156 observed reflections with I > 2σ(I). X-ray analysis revealed that the pyridine ring is of boat conformation and the six-member ring fused with it adopts half-chair conformation.

关键词： hexahydroquinoline crystal structure green synthesis

Biodegradation of malathion by Acinetobacter johnsonii MA19 and optimization of cometabolism substrates

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Journal of Environmental Sciences 2009年第1期21卷 76-82页

作者： xie shan LIU Junxin LI Lin QIAO Chuanling Research Center for Eco-Environmental Sciences Chinese Academy of Sciences Beijing 100085 China. Institute of Zoology Chinese Academy of Sciences Beijing 100080 China

To enhance the removal efficiency of malathion in the wastewater from organophosphate pesticide mill, a bacterium, Acinetobacter johnsonii MA19, that could degrade malathion with cometabolisrn was isolated from malathion-polluted soil samples using enrichment culture techniques. Four kinds of additional compounds, sodium succinate, sodium acetate, glucose, and fructose were tested to choose a favorite carbon source for the cometabolism of strain MA19. The results showed that sodium succinate and sodium acetate could promote malathion biodegradation and cell growth. The investigation results of the effects of sodium succinate concentrations on the malathion biodegradation indicated that the more sodium succinate supplied resulted in quick degradation of malathion and fast ceils multiplied. Zero-order kinetic model was appropriate to describe the malathion biodegradation when the concentration of sodium succinate was more than 0.5144 g/L, The degradation rate constant （K） reached the maximum value of 3.5837 mg/（L·h） when the mass ratio of sodium succinate to malathion was 128.6 mg/mg. The aquatic toxicity of the malathion was evaluated using the test organism, Limnodrilus hoffmeisteri. The data obtained suggested that the toxicity of malathion could be ignored after 84 h biodegradation. Our result demonstrates the potential for using bacterium A. johnsonii MA19 for malathion biodegradation and environmental bioremediation when some suitable conventional carbon sources are supplied.

关键词： bacterium Acinetobacter johnsonii cometabolism wastewater malathion toxicity