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Journal of Natural Gas Chemistry 2012年第1期21卷 76-82页

作者： Min Yang haijun guo Yansheng Li Qiong Dang School of Environment and Chemical Engineering Dalian Jiaotong UniversityDalian 116028LiaoningChina

Pt-CeO2-ZrO2/MgO （Pt-CZ/MgO） catalysts with 0.8 wt% Pt, 3.0 wt% CeO2 and 3.0 wt% ZrO2 were prepared by wet impregnation method. Support MgO was obtained using ion exchange resin method or using commercial MgO. XRD, BET, SEM, TEM, DTA-TG and CO2-TPD were used to characterize the catalysts. CH4-CO2 reforming to synthesis gas （syngas） was performed to test the catalytic behavior of the catalysts. The catalyst Pt-CZ/MgO-IE（D） prepared using ion exchange resin exhibits more regular structure, smaller and more unique particle sizes, and stronger basicity than the catalyst Pt-CZ/MgO prepared from commercial MgO. At 1073 K and atmospheric pressure, Pt-CZ/MgO-IE（D） catalyst has a higher activity and greater stability than Pt-CZ/MgO catalyst for CH4-CO2 reforming reaction at high gas hourly space velocity of 36000 mL/（g.h） with a stoichiometric feed of CH4 and C02. Activity measurement and characterization results demonstrate that modification of the support using ion exchange resin method can promote the surface structural property and stability, therefore enhancing the activity and stability for CH4-CO2 reforming reaction.

关键词： Pt-CeO2-ZrO2/MgO catalyst CH4-CO2 reforming support modification stability

Oxidative depolymerization of lignin improved by enzymolysis pretreatment with laccase

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Journal of Energy Chemistry 2018年第3期27卷 801-805页

作者： Yuan Zhu Xinping Ouyang Ying Zhao Linfeng Jiang haijun guo Xueqing Qiu School of Chemistry and Chemical Engineering South China University of TechnologyGuangzlzou 510640duangdongChino

A new lignin depolymerization approach for improving the yield of aromatic monomers（YAM） by enzymolysis pretreatment was investigated, in which lignin was pretreated with laccase followed by oxidative depolymerization. It was found that lignin depolymeirzation was enhanced significantly by enzymolysis. The oxidative depolymerization contributed to 21.37% of YAM after the enzymolysis pretreatment,whereas the conventional oxidative depolymerization only gave 14.10% of YAM. The addition of ethanol in enzymatic pretreatment process improved the efficiency of enzymolysis, which effectively improved the solubility of pretreated lignin and depolymerization degree（DD） of lignin. The enzymolysis pretreatment increased the content of syringyl（S） style aromatic monomers, which hindered the recondensation among polymerized products. As lignin has low solubility in acidic aqueous solution, ethanol was added into enzymolysis system to improve the efficiency. However, the enzymolysis of lignin should be carried out for a limited period of time to prevent the inactivation of laccase.

关键词： Lignin Depolymerization Enzymolysis Pretreatment Aromatic monomer

Gas desorption characteristics of the high-rank intact coal and fractured coal

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International Journal of Mining Science and Technology 2015年第5期25卷 819-825页

作者： Lu Shouqing Cheng Yuanping Qin Liming Li Wei Zhou Hongxing guo haijun National Engineering Research Center of Coal Gas Control China University of Mining & Technology School of Safety Engineering China University of Mining & Technology Key Laboratory of Gas and Fire Control for Coal Mine China University of Mining & Technology

The objective of this work is to study the gas desorption characteristics of the high-rank intact coal and fractured *** gas adsorption,mercury porosimetry and gas desorption experiments were carried out in this ***,the theories of thermodynamics,diffusion mechanism and desorption kinetics were used to estimate the gas desorption *** results of gas adsorption experiments show that the initial isosteric adsorption heat of the intact coal is greater than that of the fractured coal,indicating that the gas molecules desorb more easily from fractured coal than intact *** the mercury porosimetry,we find that the diffusion channels of fractured coal are more developed than those of intact *** difficult diffusion form dominates in the intact coal during the gas diffusing,while the easy diffusion form dominates in the fractured *** results of gas desorption experiments show that the initial gas desorption volume and velocity of the fractured coal are both greater than those of the intact *** the Fick diffusion law,the study calculates the gas diffusion coefficients of the intact coal and fractured *** diffusion coefficients of the fractured coal are 2 times and 10 times greater than those of the intact coal at the time of 0-120 and 0-10 min,respectively.

关键词： Intact coal Fractured coal Isosteric adsorption heat Diffusion coefficient

ZIP4 inhibits Ephrin-B1 ubiquitination,activating Wnt5A/JNK/ZEB1 to promote liver cancer metastasis

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Genes & Diseases 2024年第6期11卷 1-4页

作者： haijun guo Renyi Su Xinfeng Lu Hui Zhang Xuyong Wei Xiao Xu Department of Hepatobiliary and Pancreatic Surgery Affiliated Hangzhou First People's HospitalZhejiang University School of MedicineHangzhouZhejiang 310006China Zhejiang University School of Medicine HangzhouZhejiang 310058China The Fourth School of Clinical Medicine Zhejiang Chinese Medicine UniversityHangzhouZhejiang 310053China School of Clinical Medicine Hangzhou Medical CollegeHangzhouZhejiang 310014China

Hepatocellular carcinoma(HCC),a highly malignant tumor,faces a major challenge with its high post-hepatectomy recurrence impacting patient *** and preventive strategies remain to be ***-/lrt-like protein 4(ZIP4,also called SLC39A4/solute carrier family 39 member 4)belongs to the zinc transporter ZiP superfamily of which the members play an important role in maintaining zinc steady state,and its high expression in various tumors is associated with the prognosis of cancer patients.

关键词： ZEB1 metastasis cancer

Evaluation of the weakening behavior of gas on the coal strength and its quantitative influence on the coal deformation

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International Journal of Mining Science and Technology 2021年第3期31卷 451-462页

作者： haijun guo Kai Wang Yuchen Wu Hanlu Tang Jianguo Wu Lianhe Guan Chenyang Chang Chao Xu Beijing Key Laboratory for Precise Mining of Intergrown Energy and Resources China University of Mining and Technology-BeijingBeijing 100083China School of Emergency Management and Safety Engineering China University of Mining and Technology-BeijingBeijing 100083China State Key Laboratory of Coal Resources and Safe Mining China University of Mining and Technology-BeijingBeijing 100083China Kailuan(Group)Co. Ltd.Tangshan 063018China

The coal strength and deformation properties are key factors affecting safe coal mining and highefficiency coalbed methane(CBM)*** this paper,reconstituted coal samples are chosen to investigate the weakening behavior of gas on coal strength,meanwhile,its effects on coal deformation are quantitatively *** results indicate that the weakening degree of gas on coal strength is closely related to the confining stress and gas *** with non-gas-saturated coals,the maximum weakening ratios of adsorbed gas to coal strength are 10.58%,18.12%,8.55%and 14.65%under the conditions of confining stress CS=3 MPa and gas pressure GP=1 MPa,CS=3 MPa and GP=2 MPa,CS=4 MPa and GP=1 MPa,and CS=4 MPa and GP=2 MPa,***,the maximum weakening ratios of free gas to coal strength are 18.27%,36.54%,14.79%and 29.58%,respectively,under above four *** maximum coal bulk strain decreases as particle sizes of coal powders increase,and it has a maximum value of 0.0227 and a minimum value of 0.0191 in particle size ranges of 0.01–0.041 and 0.5–1 *** the same conditions,the coal bulk strain increases with increasing gas pressure,revealing that coal deformation properties can be enhanced by gas.

关键词： Gas-saturated coal Coal strength Weakening effect Coal deformation Quantitative evaluation Mechanical loading

Thermodynamic evaluation and hydrothermal preparation of K_xNa_(1-x)NbO_3

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Rare Metals 2008年第4期27卷 371-377页

作者： ZHANG Ci LV haijun guo Min ZHANG Mei WANG Xidong Department of Physical Chemistry University of Science and Technology Beijing Beijing 100083 China College of Engineering. Peking University Beijing 100871 China

The Gibbs free energies of reaction △rGτ of KNbO3 and NaNbO3 were calculated and then that of KxNa1-xNbO3 was estimated. On the basis of the thermodynamic calculation results, the hydrothermal temperatures were designed at 100, 160, and 230℃ respectively. However, NaNbO3 was prepared when the heating temperature was higher than 160℃, and KNbO3 and KxNa1-xNbO3 were obtained at 230℃, suggesting that only at a higher temperature the kinetic requirement is satisfied. According to the X-ray diffraction results, both the solid solutions, NaNbO3-based solid solution, Na1-xKxNbO3, and KNbO3-based solid solution, K1-xNaxNbO3, were hydrothermally synthesized in 6 mol/L alkali （NaOH and KOH） solution at 230℃.

关键词： KNbO3 NaNbO3 thermodynamic calculation hydrothermal synthesis Gibbs free energy

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肝脾肿大伴β脂蛋白缺乏症1例报告

临床肝胆病杂志 2022年第8期38卷 1880-1882页

作者：郭海军邢台市人民医院肝病科河北邢台054000

1 病例资料患者男性,15岁,主因“发现肝功能异常2个月”于2020年10月5日就诊本院,否认发病前特殊用药史,否认饮酒史。患者于2个月前外院体检发现肝功能异常,无尿黄,无腹胀、腹痛,无皮肤瘙痒及陶土样便,无发热,无肢体无力等症状。TBil 23... 详细信息

1 病例资料患者男性,15岁,主因“发现肝功能异常2个月”于2020年10月5日就诊本院,否认发病前特殊用药史,否认饮酒史。患者于2个月前外院体检发现肝功能异常,无尿黄,无腹胀、腹痛,无皮肤瘙痒及陶土样便,无发热,无肢体无力等症状。TBil 23.5 μmol/L,ALT 118 U/L,AST 71 U/L,ALP 224 U/L,GGT 43.8 U/L,CHO 1.34 mol/L,TG 0.16 μmol/L,超声提示脂肪肝.

关键词：低β脂蛋白血症无β脂蛋白血症肝肿大脾大

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Zinc finger protein 296 promotes hepatocellular carcinoma progression via intervening interaction between macrophages and B cells

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Chinese Journal of Cancer Research 2024年第5期36卷 517-529页

作者： Nan Xu Xiaonan Xiang Huan Chen Yiyuan Chen Shuai Wang haijun guo Xuyong Wei Jun Chen Xiao Xu Qiang Wei Zhejiang University School of Medicine Hangzhou 310058China Key Laboratory of Integrated Oncology and Intelligent Medicine of Zhejiang Province Affiliated Hangzhou First People’s HospitalSchool of MedicineWestlake UniversityHangzhou 310006China Department of Colorectal Surgery Sir Run Run Shaw HospitalZhejiang University School of MedicineHangzhou 310016China School of Clinical Medicine Hangzhou Medical CollegeHangzhou 310053China Institute of Translational Medicine Zhejiang University School of MedicineHangzhou 310029China

Objective:Hepatocellular carcinoma(HCC)is a prevalent malignancy with poor *** cell types in the tumor microenvironment participate in the tumorigenesis and progression of *** study aimed to analyze the immune microenvironment of HCC and its relationship with clinical ***:We analyzed HCC RNA-seq for cell type identification and prognosis by estimating relative subsets of RNA transcripts using *** interaction between B cells and macrophages in HCC was analyzed using a Hepa1-6 orthotopic transplantation mouse model and flow *** effect of Zinc finger protein 296(ZNF296)on the interaction of B cells and macrophages was verified using human HCC tissues analyzed through western blot,quantitative real-time polymerase chain reaction(qPCR),and multiplex immunofluorescence.A comparative analysis of immune cells associated with HCC prognosis was performed using RNA-seq data from The Cancer Genome Atlas(TCGA),bulk multimodal data,and single-cell transcriptomic data from existing HCC single-cell transcriptomic data employing the Single Cell Inferred Site Specific Omics Resource for Tumor Microenvironments(SCISSOR).Results:Liver hepatocellular carcinoma(LIHC)RNA-seq analysis of TCGA showed that high eosinophil infiltration promoted HCC *** proportion of B cells correlated with that of macrophages(r=−0.24)and affected the infiltration and programmed death ligand 1(PD-L1)expression of macrophages in ***296 may participate in the interaction between B cells and macrophages to accelerate the HCC progression by regulating PAFAH1B3 and ***,ZNF296 expression positively correlated with LAG3(r=0.27)and CTLA4(r=0.31)expression *** the immune cell phenotypes related to survival and death identified by SCISSOR analysis,T cells correlated with an excellent prognosis of *** normal function of liver and dendritic cells was also associated with a good prognosis in ***:This study analyzed the

关键词： Hepatocellular carcinoma immune cells prognosis Zinc finger protein 296

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特厚煤层综放开采区段煤柱合理留设宽度研究

中国煤炭 2024年第S1期50卷 231-237页

作者：郭海军卢恒国能神东煤炭集团有限责任公司大柳塔煤矿陕西省榆林市719315

为提高回采率,保证巷道围岩稳定,合理留出区段的煤柱宽度是工作面开采过程中至关重要的因素。以西北矿区某矿2盘区综放工作面区段煤柱留设为工程背景,通过理论计算得出区段煤柱留设宽度为7.18~7.98 m。通过数值模拟方法研究了工作面开... 详细信息

为提高回采率,保证巷道围岩稳定,合理留出区段的煤柱宽度是工作面开采过程中至关重要的因素。以西北矿区某矿2盘区综放工作面区段煤柱留设为工程背景,通过理论计算得出区段煤柱留设宽度为7.18~7.98 m。通过数值模拟方法研究了工作面开采过程中不同区段煤柱宽度条件下影响下回采巷道的围岩变形与煤柱的垂直应力分布,研究结果表明,留10 m以上煤柱可有效减小巷道围岩变形,且10 m煤柱既能维持其本身的稳定,又能起到支撑顶底板与保护巷道的作用。在此基础上,通过对相关结果的综合分析,得到了合理的煤柱留设宽度,为类似条件下合理煤柱留设提供了依据。

关键词：特厚煤层综放开采区段煤柱留设宽度

厚煤层沿空留巷柔模混凝土充填体合理宽度确定

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煤炭科学技术 2022年第S2期50卷 105-112页

作者：郭海军杜怀龙国能神东煤炭大柳塔煤矿陕西神木719315

基于大柳塔煤矿52606沿空留巷技术需求,提出了厚煤层“柔模混凝土+补强支护”围岩稳定控制思路。通过理论计算得出1.2 m宽度下柔模混凝土充填墙体满足安全生产要求。基于此,采用数值模拟综合分析了0.6、1.2与1.8 m三种不同宽度柔模混凝... 详细信息

基于大柳塔煤矿52606沿空留巷技术需求,提出了厚煤层“柔模混凝土+补强支护”围岩稳定控制思路。通过理论计算得出1.2 m宽度下柔模混凝土充填墙体满足安全生产要求。基于此,采用数值模拟综合分析了0.6、1.2与1.8 m三种不同宽度柔模混凝土墙体的采动围岩应力演化及变形特征,数值计算显示:随着宽度增加,巷道顶部垂直应力增大,应力向充填墙体中部转移,且宽度为1.2 m时,留巷整体稳定性较高,巷道变形量较低。因此,确定了沿空留巷柔模混凝土充填体合理宽度为1.2 m。矿压观测结果表明,留巷期间巷道围岩整体变形较小,锚杆(索)及充填墙体工况良好,顶板未见明显裂隙发育,矿压显现不明显,保证了厚煤层工作面安全高效生产。研究对类似条件下厚煤层沿空留巷具有一定的借鉴价值。

关键词：厚煤层沿空留巷巷道支护数值模拟