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Syntheses, Structures and Herbicidal Activity of Bis(5-R-2-hydroxybenzylidene) Thiocarbohydrazide Monobutyltin Complexes [R: H(T1), Me(T2)]

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Chinese Journal of Structural Chemistry 2019年第5期38卷 719-726,668页

作者： feng yong-Lan ZHANG Fu-Xing KUANG Dai-Zhi Key Laboratory of Functional Metal-organic Compounds of Hunan Province Key Laboratory of Functional Organometallic Materials of College of Hunan Province Department of Chemistry and Material Science Hengyang Normal University

The 1,5-disubstituted thiocarbohydrazide ligands were prepared by the condensation of thiocarbohydrazide with salicylaldehyde and 5-methylsalicylaldehyde, respectively. The butyltin complexes,[(5-R-2-hydroxy)ArCH=NNH]2 CS(n-BuSnCl)2, R = H(T1);R = Me(T2), based on the1,5-disubstituted thiocarbohydrazide were obtained by microwave-assisted solvothermal reaction of n-butyltintrichloride precursor with the ligands in methanol environments, which have been structurally characterized by elemental analysis, IR and(1 H, 13 C) NMR spectra. The crystals belong to monoclinic system, space groups C2/c(T1) and Pc(T2), respectively. The Sn atom is six-coordinated with distorted octahedral geometry by O, N and S atoms from ligand, C atom of butyl and two Cl atoms. In the crystal, complex T1 forms three-dimensional supramolecular assembly mediated by noncovalent interactions such as C–H···Cl and π-stacking ***, T2 forms an interesting two-dimensional supramolecular structure by noncovalent interactions(e.g. C–H×××Cl and N–H×××Cl) of one-dimensional band-like chain. These ligands and its butyltin complexes have growth effect on the target plants, such as Portulaca oleracea L.,Amaranthus spinosus L., Cassia tora L., Brassica campestris L. ssp. chinensis var. utilis Tsen et Lee and Amaranthus tricolor L. The ligand L1 has a good inhibitory effect on the growth of Cassia tora L., and complex T2 has selective inhibition on the growth of Portulaca oleracea L. and Amaranthus tricolor L., which can be used as a candidate compound for Cassia tora L., Portulaca oleracea *** Amaranthus tricolor L. herbicide.

关键词： bis(2-hydroxybenzylidene)thiocarbohydrazide butyltin microwave solvothermal synthesis crystal structure herbicidal activity

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Thrombosis of gallbladder vein presenting as acute peritonitis

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Hepatobiliary & Pancreatic Diseases International 2010年第1期9卷 100-102页

作者： Ge, Chun-Lin Luo, Xiao-Guang Liu, yong-feng China Med Univ Affiliated Hosp 1 Dept Gen Surg Shenyang 110001 Peoples R China

BACKGROUND: Thrombosis of the gallbladder vein occurs rarely, and few clinical features have been reported. We report here with a case of gallbladder vein thrombosis presenting as acute peritonitis in a 75-year-old man. METHODS: The old man with sudden continuous abdominal pain resorted to the emergency room and treated for peritonitis associated with acute cholecystitis. The treatment failed to slow the progress of the disease, and massive ascites appeared with thickening of the gallbladder wall. Laparotomic investigation was conducted later. RESULT: Pathologically, thrombosis of the gallbladder vein was diagnosed. CONCLUSIONS: The thrombosis of the gallbladder vein is characterized by thickening of the gallbladder wall, ascites, and sudden continuous abdominal pain. The causes of deep vein thrombosis at this unusual site vary.

关键词： thrombosis gallbladder vein deep vein thrombosis

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A Detailed Study on the Equal Arrival Time Surface Effect in Gamma-Ray Burst Afterglows

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Chinese Journal of Astronomy and Astrophysics 2007年第3期7卷 397-404页

作者： yong-feng Huang Ye Lu Anna Yuen Lam Wong Kwong Sang Cheng Department of Astronomy Nanjing University Nanjing 210093 Department of Physics The University of Hong Kong Pokfulam Road Hong Kong National Astronomical Observatories Chinese Academy of Sciences Beijing 100012

Due to the relativistic motion of gamma-ray burst remnant and its deceleration in the circumburst medium, the equal arrival time surfaces at any moment are not spherical, rather, they are distorted ellipsoids. This will leave some imprints in the afterglows. We study the effect of equal arrival time surfaces numerically for various circumstances, i.e., isotropic fireballs, collimated jets, density jumps and energy injection events. For each case, a direct comparison is made between including and not including the effect. For isotropic fireballs and jets viewed on axis, the effect slightly hardens the spectra and postpones the peak time of the afterglows, but does not change the shapes of the spectra and light curves significantly. In the cases of a density jump or an energy injection, the effect smears out the variations in the afterglows markedly.

关键词： gamma rays bursts -- relativity -- shock waves -- ISM clouds

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Determination of Hydrocarbon Charging History by Diagenetic Sequence and Fluid Inclusions:A Case Study of the Kongquehe Area in the Tarim Basin

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Acta Geologica Sinica(English Edition) 2015年第3期89卷 876-886页

作者： WANG Bin feng yong ZHAO yongqiang ZHOU Yushuang LUO Yu ZHANG Genfa Wuxi Research Institute of Petroleum Geology SINOPEC School of Geosciences Yangtze University Research Institute of Exploration and Development Northwest Oilfield Branch CompanySINOPEC

Petrographic analysis of hydrocarbon inclusions in reservoirs is the basis and prerequisite for study of hydrocarbon charge history using fluid inclusion *** from Silurian reservoirs in the Kongquehe area were studied with microscopy,cathode luminescence and scanning electron microscopy,and the paragenetic sequence of diagenetic events was *** and oil inclusions were found in four different occurrences,i.e.,① in healed cracks in detrital quartz grains,② in quartz overgrowths that were formed relatively early in diagenesis,③ in healed cracks crosscutting quartz overgrowths and detrital quartz,and ④ in paragenetically late calcite *** bitumens were found in intergranular pores and in late fractures,whereas gas inclusions occur in healed cracks crosscutting quartz overgrowths and detrital *** homogenization temperatures of aqueous（Th_（aq）） and oil incluisons（Th_0） within individual fluid inclusion assemblages are very consistent,suggesting that the microthermometric data are *** Th_（aq） values are generally larger than Th_0,indicating the oil charging events took place at significant *** results suggest that there were at least two episodes of hydrocarbon charging in the Kongquehe area：the early hydrocarbon charging occurred in late Caledonian,dominated by oil,and the late hydrocarbon charging occurred in the Yanshan-Himalayan,first by oil and then *** addition,two episodes of hydrocarbon reservoir adjustment and destruction occurred in the Hercynian and Himalayan,respectively,forming solid bitumen.

关键词： Fluid inclusion diagenetic sequence hydrocarbon charge history Kongquehe area TarimBasin

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Prediction of rat liver transplantation outcomes using energy metabolites measured by microdialysis

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Hepatobiliary & Pancreatic Diseases International 2018年第5期17卷 392-401页

作者： Qi Pan Ying Cheng Zi-Gong Shao An-Yin Wang yong-feng Liu Department of Transplantation and Hepatobiliary Surgery First Affiliated Hospital of China Medical University

Background: Warm ischemia jeopardizes graft quality and recipient survival in donation after cardiac death(DCD) transplantation. Currently, there is no system to objectively evaluate the liver quality from DCD. The present study tried to use energy metabolites to evaluate the donor liver quality. Methods: We divided 195 Sprague-Dawley rats into five groups: the control( n = 39), warm ischemic time(WIT) 15 min( n = 39), WIT 30 min( n = 39), WIT 45 min( n = 39), and WIT 60 min( n = 39) groups. Three rats from each group were randomly selected for pretransplant histologic evaluation of warm ischemiarelated damage. The remaining 36 rats were randomly divided into donors and recipients of 18 liver transplantations, and were subjected to postoperative liver function and survival analyses. Between cardiac arrest and cold storage, liver energy metabolites including glucose, lactate, pyruvate, and glycerol were measured by microdialysis. The lactate to pyruvate ratio(LPR) was calculated. Results: The changes in preoperative pathology with warm ischemia were inconspicuous, but the trends in postoperative pathology and aminotransferase levels were consistent with preoperative energy metabolite measurements. The 30-day survival rates of the control and WIT 15, 30, 45, and 60 min groups were 100%, 81.82%, 76.92%, 58.33%, and 25.00%, respectively. The areas under the receiver operating characteristic curves of glucose, lactate, glycerol, and LPR were 0.87, 0.88, 0.88, and 0.92, respectively. Conclusion: Glucose, lactate, glycerol, and LPR are predictors of graft quality and survival outcomes in DCD transplantation.

关键词： Energy metabolites Graft evaluation Warm ischemia Microdialysis Donation after cardiac death

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Self-cleaning Anti-fouling TiO2/Poly(aryl ether sulfone) Composite Ultrafiltration Membranes

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Chemical Research in Chinese Universities 2019年第4期35卷 714-720页

作者： JIANG Hongchuan YANG Xia feng yong WANG Xinyu GENG Zhi HUO Mingxin Jilin Engineering Lab for Water Pollution Control and Resources Recovery College of EnvironmentNortheast Normal UniversityChangchun 130117P.R.China

A series of novel TiO2/poly(aryl ether sulfone) ultrafiltration membranes with anti-fouling and self-cleaning properties was designed and prepared. First, anti-photocatalytic degraded fluorine contained polv(aryl ether sulfone) matrix(PAES-F) was synthesized. Then the composite membranes were prepared via TiO2 nanopartides and PAES-F polymer matrix by solution blending and non-solvent induced phase inversion methods. Further, separation efficiency, fouling behavior and self-cleaning property of the composite ultrafiltration(UF) membranes were investigated by dead-end filtration experiments using a polyacn lamide solution. The composite UF membranes exhibited outstanding self-cleaning efficiency and anti-photocatalytic degraded property after exposure to simulated sunliglit *** water flux recovery ratios(FRR)of the optimal composite UF membranes could reach 74.24%, which was attributable to photocatalytic degradation of the organic contaminant by TiO2. And the retention rates of the composite UF membranes could maintain over 97%, which indicated the excellent photocatalytic degradation resistance of the fluorine contained PAES-F matrix. The novel high perfomiance composite UF membranes have a broad application prospect in water treatment.

关键词： Poly(aryl ether sulfone) Ultrafiltration Anti-fouling Self-cleaning Titanium dioxide

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Excited State Properties of Fluorine-Substituted Hexabenzocoronene： A Quantum-Chemical Characterization

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Communications in Theoretical Physics 2006年第2X期46卷 229-232页

作者： LI Yuan-Zuo SUN Yu LI yong-Qing MA feng-Cai Department of Physics Liaoning University Shenyang 110036 China

The first fluorine-substituted hexabenzocoronene has been synthesized and its electronic structure and optical properties have been reported [Q. Zhang, et al., Org. Lett. 7 （2005） 5019]. In this letter, the electronic structure and excited state properties of the fluorine-substituted hexabenzocoronene are studied with quantum chemistry method as well as the transition and the charge difference densities. The transition densities show the orientations and strength of the dipole moments and the charge difference densities reveal the orientation and results of the intramolecular charge transfer. The calculated transition energies and oscillator strengths are consistent with the experimental data, and the theoretical results of transition and charge difference densities are valuable to understanding the excited state properties of the fluorine-substituted hexabenzocoronene.

关键词： intramolecular charge transfer fluorine-substituted hexabenzocoronene transition densities charge difference densities

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Management of chronic hepatitis B in pregnancy

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World Journal of Gastroenterology 2012年第33期18卷 4517-4521页

作者： Guo-Rong Han Chuan-Lu Xu Wei Zhao yong-feng Yang Department of Gynecology and Obstetrics The Second Affiliated Hospital of the Southeast UniversityNanjing 210003Jiangsu ProvinceChina Department of Infectious Diseases The Second Affiliated Hospital of the Southeast UniversityNanjing 210003Jiangsu ProvinceChina

Pregnancy associated with chronic hepatitis B (CHB) is a common and important problem with unique challenges. Pregnant women infected with CHB are different from the general population, and their special problems need to be considered: such as the effect of hepatitis B virus (HBV) infection on the mother and fetus, the effect of pregnancy on replication of the HBV, whether mothers should take HBV antiviral therapy during pregnancy, the effect of these treatments on the mother and fetus, how to carry out immunization of neonates, whether it can induce hepatitis activity after delivery and other serious issues. At present, there are about 350 million individuals with HBV infection worldwide, of which 50% were infected during the perinatal or neonatal period, especially in HBV-endemic countries. Currently, the rate of HBV infection in thechild-bearing age group is still at a high level, and the infection rate is as high as 8.16%. Effective prevention of mother-to-child transmission is an important means of reducing the global burden of chronic HBV infection. Even after adopting the combined immunization measures, there are still 5%-10% of babies born with HBV infection in hepatitis B e antigen positive pregnant women. As HBV perinatal transmission is the main cause of chronic HBV infection, we must consider how to prevent this transmission to reduce the burden of HBV infection. In this population of chronic HBV infected women of childbearing age, specific detection, intervention and follow-up measures are particularly worthy of attention and discussion.

关键词： Chronic hepatitis B Hepatitis B virus Mother-to-child transmission Perinatal transmission Pregnancy Vertical transmission Antiviral therapy

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Transient Properties of a Bistable System with Delay Time Driven by Non-Gaussian and Gaussian Noises:Mean First-Passage Time

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Communications in Theoretical Physics 2008年第9期50卷 669-673页

作者： LI Dong-Xi XU Wei GUO yong-feng LI Gao-Jie Department of Applied Mathematics Northwestern Polytechnical University Xi＇an 710072 China

The mean first-passage time of a bistable system with time-delayed feedback driven by multiplicative non-Gaussian noise and additive Gaussian white noise is investigated. Firstly, the non-Markov process is reduced to the Markov process through a path-integral approach; Secondly, the approximate Fokker-Planck equation is obtained by applying the unified coloured noise approximation, the small time delay approximation and the Novikov Theorem. The functional analysis and simplification are employed to obtain the approximate expressions of MFPT. The effects of non-Gaussian parameter （measures deviation from Gaussian character） r, the delay time τ, the noise correlation time to, the intensities D and a of noise on the MFPT are discussed. It is found that the escape time could be reduced by increasing the delay time τ, the noise correlation time τ0, or by reducing the intensities D and α. As far as we know, this is the first time to consider the effect of delay time on the mean first-passage time in the stochastic dynamical system.

关键词： mean first-passage time delay time non-Gaussian noise Gaussian noise bistable system

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Synthesis and photoelectrical performance of nanoscale PbS and Bi2S3 co-sensitized on TiO2 nanotube arrays

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Journal of Modern Transportation 2017年第1期25卷 52-57页

作者： Fanggong Cai Min Pan yong feng Guo Yan yong Zhang yong Zhao Superconductivity and New Energy R&D Center Key Laboratory of Advanced Technology of Materials(Ministryof Education of China)Southwest Jiaotong UniversityMail Stop 165#Cheng du 610031People's Republic of China National Engineering Labortary for Superconducting Materials Western Superconducting Technologies Co.LtdXi'anPeople's Republic of China School of Physical Science and Technology Southwest Jiaotong UniversityChengdu 610031People's Republic of China

TiO2 films have been widely applied in photo- voltaic conversion techniques. TiO2 nanotube arrays （TiO2 NAs） can be grown directly on the surface of metal Ti by the anodic oxidation method. Bi2S3 and PbS nanoparticles （NPs） were firstly co-sensitized on TiOa NAs （denoted as PbS/Bi2S3（n）/TiO2 NAs） by a two-step process containing hydrothermal and sonication-assisted SILAR method. When the concentration of Bi3＋ is 5 mmol/L, the best photoelectrical performance was obtained under simulated solar irradiation. The short-circuit photocurrent （Jsc） and photoconversion efficiency （η） of PbS/Bi2S3（5）/TiO2 NAs electrode were 4.70 mA/cm and 1.13 %, respectively.

关键词： Solar cells TiO2 nanotube arrays Bi2S3 PbS Surface photovoltage

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