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The geochemical characteristics and genetic types of crude oils in the western depression of the Liaohe Basin,China

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Chinese Journal Of Geochemistry 2009年第3期28卷 328-334页

作者： MU Guoyan ZHONG Ningning liu bao ZHANG Ning XU Guangjie China University of Petroleum Beijing 102249 China Exploration ＆ Development Institute of Liaohe Petroleum Exploration Bureau Panjine 124000 China Geology Institute of Henan Nanyang Oil-field Nanyang 473132 China

The physical properties and group compositions of crude oils in the western depression of the Liaohe Basin possess such characteristics as to increase gradually in density, viscosity and wax contents, and decrease in saturated hydrocarbon and non-hydrocarbon and bitumen contents from the deep level to the shallow level and from the center of the depression to its boundary. Saturated hydrocarbons have various spectra, such as single peak and double peak patterns, front peak and rear peak patterns, and smooth peak and serated peak patterns, as well as the chromatograms of biodegraded n-alkanes. The ratios of Pr/Ph in crude oils from the southern part of the depression are generally higher than those in the northern part. The distribution of regular steranes C27-C29 is predominantly of the ramp type, and only a few samples have relatively high C28 contents in the southern part of the depression. As viewed from their physical properties and geochemical characteristics, crude oils in the study area can be divided into two types (I and II) based on oil-generating sources and sedimentary environments, and then further divided into three sub-types (Ia, Ib and Ic:IIa, IIb and IIIc, respectively) based on their degrees of maturation and secondary transformation. This will provide the reliable basis for oil-source correlation and petroleum exploration and prediction.

关键词：地球化学特征西部凹陷辽河盆地成因类型原油中国油源对比碳氢化合物

Amide Ionic Liquids(AILs)/L-Proline Synergistic Catalyzed Asymmetric Mannich Reactions

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Chemical Research in Chinese Universities 2007年第2期23卷 163-168页

作者： liu bao-you ZHAO Di-shun XU Dan-qian XU Zhen-yuan Key Laboratory of Contaminant Controlling in Biology of Hebei Province College of Environmental Science and Engineering Hebei University of Science and Technology Shijiazhuang 050018 P. R. China State Key Laboratory Breeding Base of Green Chemistry-synthesis Technology Zhejiang University of Technology Hangzhou 310014 P. R. China Pharmaceutical Engineering Research Centre of Hebei Province College of Chemical and Pharmaceutical Engineering Hebei University of Science and Technology Shijiazhuang 050018 P. R. China

Amide ionic liquids （MLs）/L-proline synergistic catalyzed Mannich reactions of isovaleraldehyde, methyl ketones, and aromatic amines were carried out in moderate to high yields （ up to 96% ） and high stereo selectivities （〉99% e. e. ）. The products were easily isolated by extraction; and the catalyst system was readily recycled at least thrice without significant loss of efficiency. The scope of the substrates was studied and the interpretation of the manifest improvement of the reaction rates and enantio-selectivity of the novel catalyst system was speculated.

关键词： Amide ionic liquids (AILs) L-Proline Synergistic catalysis Mannich reaction Asymmetric synthesis β-Aminoketones

Aortic aneurysm and chronic disseminated intravascular coagulation： a retrospective study of 235 patients

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Frontiers of Medicine 2017年第1期11卷 62-67页

作者： Yun Zhang Chen Li Min Shen bao liu Xuejun Zeng Ti Shen Department of General Internal Medicine Peking Union Medical College Hospital Chinese Academy of Meclical Sciences and Peking Union Medical College Beijing 100730 China Department of Rheumatology Peking Union Medical College Hospital Chinese Academy of Medical Sciences and Peking Union Medical College Beijing 100730 China Department of Vascular Surgery Peking Union Medical College Hospital Chinese Academy of Medical Sciences and Peking Union Medical College Beijing 100730 China Department of Internal Medicine Peking Union Medical College Hospital Chinese Academy of Medical Sciences and Peking Union Medical College Beijing 100730 China

Chronic disseminated intravascular coagulation （DIC） is a rare but devastating complication of aortic aneurysm （AA）. This study investigated the clinical manifestations, laboratory findings, and treatment of patients with AA-associated chronic DIC （AA-DIC） and explored the mechanisms, duration, and therapeutic response of AA-DIC. We retrospectively reviewed the medical records of 235 AA patients admitted at the Peking Union Medical College Hospital between September 2009 and January 2015. The patients were classified as those with DIC （AA-DIC） and those without DIC （non-DIC）. The AA-DIC group showed a significantly higher proportion of female patients and a significantly longer AA disease course than the non-DIC group did. The AA-DIC patients presented mural thrombi, dissecting aneurysms, a family history of AA, and diabetes significantly more frequently than the non-DIC patients did. Furthermore, multiple regression analyses revealed that sex, mural thrombus, aneurysm type, diabetes, and stent surgery are possible independent risk factors for AA-DIC patients. Fifty-two （22.1%） patients presented AA-DIC. Among these patients, 43 had non-typical DIC and 9 had typical DIC; the mortality rate of the latter was 22.2%. The mean age of the patients with typical DIC was significantly higher than of that of patients with non-typical DIC. The non-typical DIC patients also presented abnormal coagulation disorders of varying degrees. Furthermore, heparin or low-molecular-weight heparin improved the clinical symptoms and laboratory parameters in patients with AA and typical DIC. Thus, chronic DIC should be considered in patients with AA.

关键词： aortic aneurysm disseminated intravascular coagulation anticoagulation therapy

3-D NUMERICAL SIMULATIONS OF FLOW LOSS IN HELICAL CHANNEL

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Journal of Hydrodynamics 2012年第6期24卷 858-863页

作者： ZHAO Ling-zhi PENG Yan LU Fang LI Jian LI Ran liu bao-lin Institute of Electrical Engineering Chinese Academy of Sciences College of Computing and Communication Engineering University of Chinese Academy of Sciences China Ship Scientific Research Center

The flow loss of a helical channel Magnetohydrodynamic （MHD） thruster without MHD effect was numerically studied with 3-D simulations, and a flow loss coefficient （ was defined to quantify the flow loss and its influencing factors were studied. The results show that （ decreases in a first-order exponential manner with the pitch of a helical wall and the Reynolds number, and it declines slowly when t / T 〉 0.2 and Re 〉 10^5, a flow guide makes the flow more smooth and uniform, especially in the flow guide and helical wall sub-regions and thus reduces the flow loss greatly, by about 30% with the averaged value of （ from 0.0385 to 0.027, a rectifier weakens the helical flow and strengthens the axial one in the rectifier and outlet sub-regions, thus reduces the rotational kinetic pressure with the averaged value of ξ declining about 4% from 0.0385 to 0.037, and ξ decreases with a rectifier＇s axial length when Re 〉 10^5 .

关键词： helical channel Magnetohydrodynamic (MHD) propulsion rectifier flow guide flow loss

Exosomal microRNAs in hepatocellular carcinoma,expanding research field

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World Journal of Gastroenterology 2024年第20期30卷 2618-2620页

作者： Bo-Hao Zheng Xiao-Jian Ni Hou-bao liu Department of Biliary Surgery Zhongshan HospitalFudan UniversityShanghai 200032China Biliary Tract Disease Center of Zhongshan Hospital Fudan UniversityShanghai 200032China Biliary Tract Disease Institute Fudan UniversityShanghai 200032China Cancer Center Zhongshan HospitalFudan UniversityShanghai 200032China Shanghai Biliary Tract Minimal Invasive Surgery and Materials Engineering Research Center Shanghai 200032China

In this editorial we comment on the review by Wang et al published in the recent issue of the World Journal of Gastroenterology in *** extracellular vesicles(exosomes)play important roles in the tumor *** this review,the authors introduce the following points:(1)The composition and function of exosomal microRNAs(miRNAs)of different cell origins in hepatocellular carcinoma(HCC);(2)the crosstalk between exosomal miRNAs from stromal cells and immune cells in the tumor microenvironment and the progression of HCC;and(3)the potential applicability of exosomal miRNAs derived from mesenchymal stem cells in the treatment of *** addition,the potential applicability of exosomal miRNAs derived from mesenchymal stem cells in the treatment of HCC was *** this review,the authors give us an overview of the exosomal RNA and summarize the function of exosomal RNA in HCC,which provides a deeper understanding of exosomal miRNAs to the readers.

关键词： Exosomes MicroRNA Hepatocellular carcinoma Liver cancer Tumor microenvironment

Ecological niche shifts affect the potential invasive risk of Phytolacca americana(Phytolaccaceae)in China

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Ecological Processes 2023年第1期12卷 1-14页

作者： Yifeng Xu Xingzhuang Ye Qianyue Yang Huiying Weng Yipeng liu Sagheer Ahmad Guofang Zhang Qiuliang Huang Tianyu Zhang bao liu Forestry College Fujian Agriculture and Forestry UniversityFuzhou 350002FujianChina College of Landscape Architecture and Art Fujian Agriculture and Forestry UniversityFuzhou 350002FujianChina Forestry Science and Technology Center of Shunchang County ShunchangNanping 353200Fujian ProvinceChina

Background:Predicting the potential habitat of Phytolacca americana,a high-risk invasive species,can help provide a scientific basis for its quarantine and control *** the optimized MaxEnt model,we applied the latest climate data,CMIP6,to predict the distribution of potential risk zones and their change patterns for *** under current and future(SSP126,SSP245,SSP585)climate conditions,followed by invasion potential ***:The predictions of MaxEnt model based on R language optimization were highly accurate.A significantly high area of 0.8703 was observed for working characteristic curve(AUC value)of subject and the kappa value was *** the current climate conditions,the risk zones for *** were mainly distributed in Sichuan,Chongqing,Guizhou,Hunan,and Guangxi *** contribution rate of each climatic factor of *** was calculated using the jackknife *** four factors with the highest contribution rate included minimum temperature of coldest month(bio6,51.4%),the monthly mean diurnal temperature difference(bio2,27.9%),precipitation of the driest quarter(bio17,4.9%),and the warmest seasonal precipitation(bio12,4.3%).Conclusion:Under future climatic conditions,the change in the habitat pattern of *** generally showed a migration toward the Yangtze River Delta region and the southeastern coastal region of *** migration exhibited an expansion trend,highlighting the strong future invasiveness of the *** on the predictions,targeted prevention and control strategies for areas with significant changes in *** were ***,this study emphasizes the need of an integrated approach to effectively prevent the further spread of invasive plants.

关键词： Phytolacca americana MaxEnt Invasive plants Climate change

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Direct synthesis of single-phase α-CaSO4·0.5H2O whiskers from waste nitrate solution

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Chinese Journal of Chemical Engineering 2020年第6期28卷 1752-1754页

作者： Shuang Shao baozhong Ma Yongqiang Chen Wenjuan Zhang bao liu Peng Xing Chengyan Wang State Key Laboratory of Advanced Metallurgy University of Science and Technology BeijingBeijing 100083China School of Metallurgical and Ecological Engineering University of Science and Technology BeijingBeijing 100083China Department of Materials Engineering The University of British ColumbiaVancouverBC V6T 1Z4Canada

Single-phaseα-CaSO4·0.5H2O whiskers were directly synthesized from waste Ca(NO3)2 solution using a hydrothermal method,and HNO3 was synchronously *** effects of reaction temperature and Ca^2+concentration on the phase composition and morphology of products were determined by X-ray diffraction and optical *** the basis of the experimental results,the formation diagram ofα-CaSO4·0.5H2O was plotted within the range of 5–35 g·L^-1 Ca^2+and 115°C–150°*** addition,the conditions of the direct synthesis ofα-CaSO4·0.5H2O were ***-crystallized,single-phaseα-CaSO4·0.5H2O whiskers with high aspect ratios(length,1785μm;diameter,10.63μm;aspect ratio,168)and HNO3(70.25 g·L^-1)were obtained at the optimal conditions of 25 g·L^-1 Ca^2+and 125°C.

关键词： α-CaSO4·0.5H2O whiskers Direct synthesis Formation diagram Waste Ca(NO3)2 solution HNO3 regeneration

Hydroxyl radical induced from hydrogen peroxide by cobalt manganese oxides for ciprofloxacin degradation

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Chinese Chemical Letters 2022年第12期33卷 5208-5212页

作者： Shuandi Wang Xiaodong Zhang Guozhu Chen bao liu Hongmei Li Junhua Hu Junwei Fu Min liu Hunan Joint International Research Center for Carbon Dioxide Resource Utilization School of Physics and ElectronicsState Key Laboratory of Powder MetallurgyHunan Provincial Key Laboratory of Chemical Power SourcesCentral South UniversityChangsha 410083China School of Materials Science and Engineering Zhengzhou UniversityZhengzhou 450002China

Advanced oxidation processes(AOPs)are promising technology to remove organic pollutant in ***,the main problem in the AOPs is the low generation of hydroxyl radical(·OH)owing to the low decomposition efficiency of hydrogen peroxide(H_(2)O_(2)).Herein,the spinel type cobalt acid manganese(MnCo_(2)O_(4))with flower morphology was fabricated through a co-precipitation *** situ Fourier transform infrared spectroscopy confirms that the MnCo_(2)O_(4) with the optimal molar ratio of Co and Mn precursors(CM3,Co:Mn=3)has more Lewis acid sites compared with single metal oxide catalysts(Co_(3)O_(4) and Mn_(2)O_(3)),leading to the excellent performances for H_(2)O_(2) decomposition rate constant on CM3,which is about 15.03 and 4.21 times higher than those of Co_(3)O_(4) and Mn_(2)O_(3),*** a result,the obtained CM3 shows a higher ciprofloxacin degradation ratio than that of Co_(3)O_(4) and Mn_(2)O_(3).Furthermore,CM3 shows an excellent stability during several *** work proposes effective catalysts for ciprofloxacin decomposition and provides feasible route for treating practical environmental problems.

关键词： Catalytic decomposition Hydrogen peroxide Advanced oxidation processes Ciprofloxacin Pollutant degradation

Flexible lithium metal capacitors enabled by an in situ prepared gel polymer electrolyte

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Chinese Chemical Letters 2021年第11期32卷 3496-3500页

作者： Qizhi Zhong bao liu Bingjun Yang Yali Li Junshuai Li Xingbin Yan Key Laboratoy of Special Function Materials Structure Design of the Ministry of Education and School of Materials&EnergyLanzhou UniversityLanzhou 730000China Laboratory of Clean Energy Chemistry and Materials State Key Laboratory of Solid LubricationLanzhou Institute of Chemical PhysicsChinese Academy of SciencesLanzhou 730000China

The rapid development of next-generation flexible electronics stimulates the growing demand for flexible and wearable power sources with high energy *** metal capacitor(LMC),combining with a Li metal anode and an activated carbon cathode,exhibits extremely high energy density and high power density due to the unique energy storage mechanism,thus showing great potential for powering wearable electronic ***,a flexible LMC based on an in situ prepared PETEA-based gel polymer electrolyte(GPE)was reported for the first *** to the high ionic conductivity of PETEA-based GPE(5.75×10^(−3)S/cm at 20℃),the assembled flexible LMC delivers a high capacitance of 210 F/g at 0.1 A/g within the voltage range from 1.5 V to 4.3 V ***/Li^(+),a high energy density of 474 Wh/kg at 0.1 A/g and a high power density of 29 kW/kg at 10 A/*** importantly,PETEA-based GPE endows the LMC with excellent flexibility and safety,which could work normally under abuse tests,such as bending,nail penetration and *** in situ prepared PETEA-based GPE simplifies the fabrication process,avoids the risk of leakage and inhibits the growth of Li dendrite,making LMC a promising flexible energy storage device for the flexible electronic field.

关键词： Lithium metal capacitor In situ prepared gel polymer electrolyte Flexible Energy density Power density