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| 1 | Geochemical Characteristics and Origin of Natural Gases in the Qaidam Basin,China显示文摘Sixty-five natural gas samples were collected from 19 oil-gasfields in the Qaidam basin, China. The chemical composition and carbon isotope values of the samples were measured, and the geochemical characteristics and origin of the natural gases were studied. The gases can be divided into biogenic gases, sapropelic oil-type gases, mixed type oil-type gases, coal-type gases and mixed gas. The δ13C1 values of the biogenic gases are very small and the C2+ contents of them are very low, ranging from -68.2‰ to -61.8‰ and 0.06% to 0.20% respectively. They have heavy δD and δ13CCO2, showing a CO2 reduction pathway. They are distributed in the East depression region and derived from the Quaternary source rocks. The sapropelic oil-type gases have small δ13C2 values and high C2+ ranging from -36.6‰ to -28.6‰ and from 33.01% to 47.15% respectively. The mixed type oil-type gases have δ13C2 values and C2+ contents varying from -28.6‰ to -24.8‰ and from 4.81% to 26.06% respectively. Both sapropelic oil-type gases and mixed type oil-type gases are associated with oil-type oils, distributed in the West depression region and derived from the Tertiary saltwater lacustrine sapropelic source rocks and humic source rocks respectively. The δ13C2 values of the coal-type gases are extremely high and the C2+ contents are very low, changing from -23.3‰ to -12.5‰ and from 0.06% to 18.07% respectively. The coal-type gases in the Nanbaxian gasfield and the Lenghu oil-gasfields in the North fault block belt are derived from the Middle Jurassic coal-measures source rocks, whereas those in the West depression region are derived from the Tertiary saltwater lacustrine humic source rocks. Compared with some other basins in China, the natural gases there have obviously heavier δ13C due to the heavier δ13C of different types of kerogens of the Tertiary saltwater lacustrine source rocks in the West depression region of the basin. The mixing of natural gases is common in the West depression region, but the mixed gases are formed by sapropelic oil-type gases, mixed type oil-type gases or coal-type gases, respectively, of different levels of maturity. Most of the sapropelic oil-type gases and mixed type oil-type gases in the west part are thermally immature and low-mature, but the coal-type gases in the West depression region and the North fault block belt are mature and high- to over-mature. | ZHANG Xiaobao, HU Yong, DUAN Yi, MA Liyuan, MENG Zifang, HE Peng,ZHOU Shixin and PENG DehuaState Key Laboratory of Gas Geochemistry, Lanzhou Institute of Geology, Chinese Academy ofSciences, Lanzhou, Gansu 730000 Research Institute of Petroleum Exploration and Development, Qinghai Petroleum Company,CNPC, Dunhuang, Gansu 736200 | 2003 | Acta Geologica Sinica(English Edition)2003，77，1： | 6 |
| 2 | Fabrication and tribological properties of superhydrophobic nickel films with positive and negative biomimetic microtextures显示文摘Nickel(Ni)films with positive and negative textured surfaces of lotus and rice leaf patterns were fabricated through an inexpensive and effective method.The as-prepared Ni films were superhydrophobic and exhibited excellent tribological properties after chemical treatment.Experimental results indicated that the water contact angles(WCAs)on the surfaces of biomimetic textured Ni films(approximately 120°)were far greater than those on smooth films(65°).The biomimetic textured surfaces became superhydrophobic(WCA of approximately 150°)after perfluoropolyether(PFPE)treatment,which could be due to the combined effects of the special texture and the PFPE.The as-prepared biomimetic-textured Ni films modified with PFPE were improved with a low friction coefficient and excellent antiwear properties,which were due to the combination of the effective lubrication of PFPE and the special textures that served as a good lubricant and a debris reservoir.Moreover,the antiwear properties of the as-prepared Ni films with negative biomimetic microtextures modified with PFPE were much better than those of films with positive biomimetic microtextures modified with PFPE. | Ying WANG Jing YANG Xiaobao GUO Qiang ZHANG Jingyu WANG Jianning DING Ningyi YUAN | 2014 | Friction2014，2，3： | 4 |
| 3 | Discovery and its geological significance of the mantle- derived helium in the inclusions of the Ordovician oil-bearing reservoir rocks in the Huanghua depression,China显示文摘The values of the helium isotopes in the inclusions of the Ordovician reservoir rocks in the Kongxi buried hill belt in the Huanghua depression were first measured and the source of helium and its geological significance were investigated in comparison with those of the helium isotopes in the conclusions in the Ordovician rocks in the Ordos basin and the Tarim basin. The input of the mantle-derived helium into the inclusions in the carbonate reservoir rocks was found from the Konggu 3 well, the Konggu 4 well, and the Konggu 7 well in the Kongxi buried hill belt. The 3He/4He and R/Ra in the conclusions in the Ordovician oil-bearing reservoir rocks in the Konggu 7 well average 2.54×10-6(3) (sample quantity, the same below) and 1.82(3), respectively. The percent of the mantle-derived helium in the inclusions of the reservoir rocks in the Konggu 7 well reaches up to an average of 23.0%(3). The age of the contribution of the mantle-derived helium to the inclusions in the Kongxi buried hill belt is in the Late Triassic or the Early Tertiary. The finding of the mantle-derived helium shows that the interaction of the deep crust with mantle and the activity of deep faults occurred, the terrestrial heat flow value was high, and mantle-derived inorganic gas pools might be formed in the Kongxi buried hill belt. The finding of the mantle-derived helium in the inclusions of oil-bearing reservoir rocks also provides a new way for researching the activity of mantle-derived matter and its associated geological problems. | ZHANG Xiaobao XU Yongchang SUN Mingliang CHENG Keming LIU Wenhui LI Xiufen MA Liyuan | 2004 | Science China Earth Sciences2004，47，1： | 4 |
| 4 | Spirulina platensis aqueous extracts ameliorate colonic mucosal damage and modulate gut microbiota disorder in mice with ulcerative colitis by inhibiting inflammation and oxidative stress显示文摘Ulcerative colitis(UC)is a chronic and recurrent inflammatory bowel disease(IBD)that has become a major gastroenterologic problem during recent decades.Numerous complicating factors are involved in UC development such as oxidative stress,inflammation,and microbiota disorder.These factors exacerbate damage to the intestinal mucosal barrier.Spirulina platensis is a commercial alga with various biological activity that is widely used as a functional ingredient in food and beverage products.However,there have been few studies on the treatment of UC using S.platensis aqueous extracts(SP),and the underlying mechanism of action of SP against UC has not yet been elucidated.Herein,we aimed to investigate the modulatory effect of SP on microbiota disorders in UC mice and clarify the underlying mechanisms by which SP alleviates damage to the intestinal mucosal barrier.Dextran sulfate sodium(DSS)was used to establish a normal human colonic epithelial cell(NCM460)injury model and UC animal model.The mitochondrial membrane potential assay 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide(MTT)and staining with Annexin V-fluorescein isothiocyanate(FITC)/propidium iodide(PI)and Hoechst 33258 were carried out to determine the effects of SP on the NCM460 cell injury model.Moreover,hematoxylin and eosin(H&E)staining,transmission electron microscopy(TEM),enzyme-linked immunosorbent assay(ELISA),quantitative real-time polymerase chain reaction(qPCR),western blot,and 16S ribosomal DNA(rDNA)sequencing were used to explore the effects and underlying mechanisms of action of SP on UC in C57BL/6 mice.In vitro studies showed that SP alleviated DSS-induced NCM460 cell injury.SP also significantly reduced the excessive generation of intracellular reactive oxygen species(ROS)and prevented mitochondrial membrane potential reduction after DSS challenge.In vivo studies indicated that SP administration could alleviate the severity of DSS-induced colonic mucosal damage compared with the control group.Inhibition of inflammation and oxidative stress was associated with increases in the activity of antioxidant enzymes and the expression of tight junction proteins(TJs)post-SP treatment.SP improved gut microbiota disorder mainly by increasing antioxidant enzyme activity and the expression of TJs in the colon.Our findings demonstrate that the protective effect of SP against UC is based on its inhibition of pro-inflammatory cytokine overproduction,inhibition of DSS-induced ROS production,and enhanced expression of antioxidant enzymes and TJs in the colonic mucosal barrier. | Jian WANG Liqian SU Lun ZHANG Jiali ZENG Qingru CHEN Rui DENG Ziyan WANG Weidong KUANG Xiaobao JIN Shuiqing GUI Yinghua XU Xuemei LU | 2022 | Journal of Zhejiang University-Science B(Biomedicine & Biotechnology)2022，23，6： | 3 |
| 5 | A breakthrough of researching reservoir adsorption gas and its significance显示文摘GC-C-MS on linear isotope analysis equipment makes it possible to measure the hydrocarbon gases at the level of 10 -3-10 -2 μL- By applying this technique the carbon isotopes of C1-C3 of the adsorbed gas from the Triassic oil sand bed of the Aican-l Well in the Turpan-Hami basin were analysed. The δ13C values of C1-C3, are -55.1‰, -38.6‰ and -35.0‰ respectively. In terms of geochemical characteristics of natural gases and crude oils, in combination with basinal geological backgrounds, it is considered that the reservoir adsorbed gas was formed by crude-oil biodegradation, absorbed by reservoir rocks and its oil-gas source is related with the Permain (perhaps including the Carboniferous). The adsorbed gas is obviously different from the Jurassic coal-generated oil and gas. | Yongchang Xu Xiaobao Zhang Ping Shen Wenhui Liu | 1999 | Chinese Science Bulletin1999，44，8： | 3 |
| 6 | ACCELERATED LIFE TEST STUDIES OF NEW COATED DISPENSER CATHODES显示文摘The life of impregnated Ba-W cathodes with a new construction have been evaluated using an accelerated life test at three different temperatures (1170℃,1130℃,1090℃) and constant current density (2A/cm^2).According to the relationship of life with operating temperatures,an accelerated equation has been set up.The cathode life at normal operating temperature is deducted based on the accelerated equation.The results show that life of the novel cathode exceeds 190,000 hour at a current density of 2A/cm^2. | Zhang Mingchen Zhang Honglai Liu Pukun Su Xiaobao Li Yutao | 2007 | Journal of Electronics(China)2007，24，5： | 2 |
| 7 | High-definition colorful perovskite narrowband photodetector array enabled by laser-direct-writing显示文摘Narrowband photodetectors as specific spectral sensing pixels have drawn intense attention in multispectral detection due to their distinct characteristic of filter-free spectrum discrimination,in which the emerging halide lead perovskites witness a booming development in their performance and wavelength-selectivity from blue to near-infrared light.However,the challenge in integrating perovskite narrowband photodetectors on one chip imposes an impediment on practical application.In this work,the combination of laser-direct-writing and ion exchange is proposed as an efficient way to fabricate high-definition colorful sensing array with perovskite narrowband photodetector unit as pixel.Under laser irradiation,the photolysis of halocarbon solvent(CHCl_(3),CH_(3)CH_(2)I,etc)releases the halide ions,which brings the ion exchange and gives rise to slow-varying bandgap in single perovskite photoactive film.This ion exchange can be controlled via laser irradiation time and focus point,thus enabling precisely engineerable bandgap.By optimizing the process,it is successfully applied to develop patterned perovskite narrow blue and green photodetectors array with a high-definition of~53 ppi.We believe this result will make a great step forward to integrate multifunctional perovskite devices on one chip,which will pave the way for perovskite optoelectronic device to the commercial application. | Xiaobao Xu Yuhang Dong Yuanzhou Zhang Zeyao Han Jiaxin Liu Dejian Yu Yi Wei Yousheng Zou Bo Huang Jun Chen Haibo Zeng | 2022 | Nano Research2022，15，6： | 2 |
| 8 | Dispersion engineering and measurement in crystalline microresonators using a fiber ring etalon显示文摘Dispersion engineering and measurement are significant for nonlinear photonic applications using whispering gallery mode microresonators.Specifically,the Kerr microresonator frequency comb as an important example has attracted a great amount of interest in research fields due to the potential capability of full integration on a chip.A simple and cost-efficient way for dispersion measurements is thereby in high demand for designing such a microcomb device.Here,we report a dispersion measurement approach using a fiber ring etalon reference.The free spectral range of the etalon is first measured through sideband modulation,and the dispersion of the etalon is inferred by binary function fitting during the dispersion measurement.This method is demonstrated on two MgF_(2) disk resonators.Experimental results show good agreement with numerical simulations using the finite element method.Dispersion engineering on such resonators is also numerically investigated. | XIAOBAO ZHANG GUOPING LIN TANG SUN QINGHAI SONG GUANGZONG XIAO HUI LUO | 2021 | Photonics Research2021，9，11： | 2 |
| 9 | Fifty years of regional inequality in China:a journey through central planning,reform and openness显示文摘 | Ravi Kanbur Zhang Xiaobao | 2003 | Review of International Economics2003，，6： | 1 |
| 10 | Multi-criterion system optimization model for urban multimodal traffic network显示文摘In this paper,computational models of environmental pollution and energy consumption of urban multimodal traffic network are proposed according to pertinent research and a multi-objective programming model is then developed to formulate optimization problem for such a system.Simultaneously,the main factors,such as travel time,pricing and convenience which influence travelers' choice behaviors are all considered and a combined assignment model is proposed to simulate travelers' mode and route choices.A bi-level programming model,in which the multi-objective optimization model is treated as the upper-level problem and the combined assignment model is processed as the lower-level problem,is then presented to solve multi-criterion system optimization problem for urban multimodal traffic network.The solution algorithms of the proposed models are also presented.Finally,the model and its algorithms are illustrated through a simple numerical example. | SI BingFeng ZHANG HongYun ZHONG Ming YANG XiaoBao | 2011 | Science China(Technological Sciences)2011，54，4： | 1 |
| 11 | Which Regional Inequality?the Evolution of Rural-urban and Inland-coastal Inequality in China from 1983 to 1995显示文摘 | Kanbur R Zhang Xiaobao | 1999 | Journal of Comparative Economics1999，27，4： | 1 |
| 12 | Which regional inequality? the evolution of rural-urban and inland-coastal inequality in China from 1983 to 1990显示文摘 | KanburRavi Xiaobao Zhang | | 0，，04： | 1 |
| 13 | Reforms,Investment, and Povety in Rural China显示文摘 | Fan Shenggen Zhang Linxiu Zhang xiaobao | 2002 | Economics Development and Cultural Change2002，52，2： | 1 |
| 14 | Enhancing electrochemical performance of ultrasmall Fe_(2)O_(3)-embedded carbon nanotubes via combusting-induced high-valence dopants显示文摘Doping is a reasonable solution to improve the electronic structure and surface properties of nanomaterials.Herein,we propose a rapid and simple methodology,flame synthesis,as an effective preparation strategy for incorporating high-valence metal ions(Ti^(4+),Sn^(4+),and Zr^(4+))into ultrasmall Fe_(2)O_(3)on carbon nanotube support(i.e.,M-FeO-CNT).The resulting materials exhibit not only a boosted Na+adsorption as shown by density functional theory(DFT)calculations,but also display an increased oxygen deficiency.The electrochemical activity and charge transfer efficiency of Fe 2 O 3 can be improved by reasonably sub-stituting Fe 3+with Ti^(4+),Sn^(4+),and Zr^(4+).The electrochemical investigation of Ti-doped Fe 2 O 3(Ti-FeO-CNT)electrode demonstrates a splendid specific capacitance of 1.25 F cm^(−2)at 1 mA cm^(−2)in 1 M Na_(2)SO_(4).This is significantly higher as compared to the capacitance of 0.48 F cm^(−2).Flexible solid-state asymmetric su-percapacitor Ti-FeO-CNT//MnO_(2)is verified with operating voltage of 2.0 V and stability over 3000 cycles,and delivers a high energy density of 2.14 mWh cm^(−3)at power density of 25 mW cm−3.The flame synthesis is expected to be widely applicable for the preparation of high-valence metal ions doped nanosized Fe_(2)O_(3)functionalized materials,thus opening up new avenues for energy and catalysis research. | Yuan Wang Tao Zhang Jianfei Xiao Xiaobao Tian Shaojun Yuan | 2023 | Journal of Materials Science & Technology2023，，3： | 1 |
| 15 | A fiber based differential phase shift quantum key distribution scheme with higher key creation efficiency显示文摘 | Zhang Huani Wang Jindong Liu Xiaobao | 2009 | Opt Commun2009，282，14： | 1 |
| 16 | Heme oxygenase-1 ameliorates LPS-induced acute lung injury correlated with downregulation of interleukin-33显示文摘 | Hui Yin Xiangyong Li Baohong Yuan Bobin Zhang Shilian Hu Hongbiao Gu Xiaobao Jin Jiayong Zhu | 2011 | International Immunopharmacology2011，，12： | 1 |
| 17 | Helium and argon isotope geochemistry of natural gases in China's petroliferous basins显示文摘The age-accumulation effect of 40Ar in hydrocarbon source rocks was discussed in accordance with the decay law of radioactive elements. In terms of the mean values of 40Ar/36Ar, the old Sinian gas reservoirs (mean values of 40Ar/36Ar: 7009) were definitely distinguished from the Permian gas reservoirs (mean values of 40Ar/36Ar: 1017) in Weiyuan, Sichuan Province, and the gas source of the Permian gas reservoir (mean values of 40Ar/36Ar: 5222) in well Wei-7 with the Weiyuan structure is defined as the Sinian system. Based on the values of 40Ar/36Ar, the coal-type gases (The source rocks are of the C-P system; mean values of 40Ar/36Ar: 1125) are definitely distinguished from the oil-type gases (The source rocks are of the Tertiary system; mean values of 40Ar/36Ar: 590) in the Tertiary reservoirs of the Zhongyuan Oilfield. Besides, 40Ar/36Ar values also have a positive effect on the oil-source correlation of oil reservoirs in ancient hidden mountains. According to the crust-mantle interchange information reflected by 3He/4He values, petroliferous provinces in China can be divided into three major tectonic regions. (1) The eastern active region: The crust-mantle volatile matter exchanges actively, and the 3He/4He values are mainly around 10-6, partly around 10-7. (2) The central stable region: The 3He/4He values are all around 10-8. (3) The western sub-stable region: The 3He/4He values are mainly around 10-8, and around 10-7 on the edges of the basins. Helium contents of some gas wells in China’s eastern petroliferous region reach the industrial abundance (He≈0.05%–0.1%), the 3He/4He values reach 10-6, and the equivalent values for the mantle-source components in helium gas can reach 30%–50%. As viewed from this, a new type of crust-mantle composite helium resources has been proposed. Geneses of some CO2 gas reservoirs in the east of China and some issues concerning mantle-source methane were discussed in the light of the helium and carbon isotopes of CO2 and CH4 in natural gases. In the discussion on helium isotopic characteristics of inclusions in the reservoirs, it was discovered that the 3He/4He values are close to those in natural gases. That is to say, this phenomenon is related to regional tectonism. The 3He/4He, CO2/3He and CH4/3He data were used to discuss the tectonic activities of fault zones in a certain number of regions in China. | LIU Wenhui XU Yongchang TAO Mingxin ZHANG Xiaobao | 2011 | Chinese Journal Of Geochemistry2011，30，1： | 1 |
| 18 | Which Regional Inequality? the Evolution of Rural-Urban and Inland-Coastal inequality in Chi- na from 1983 to 1995显示文摘 | Ravi Kanbur Xiaobao Zhang | 1999 | Journal of Comparative Economics1999，27，4： | 1 |
| 19 | Fifty years of regional inequality in China:a journey through central planning, reform and openness 显示文摘 | Ravi Kanbur Zhang Xiaobao | 2003 | Review of International Economics2003，135，10： | 1 |
| 20 | The floral biology of Curcumorpha longiflora (Zingiberaceae): a ginger with two-day flowers 显示文摘 | Gao Jiangyun Zhang Ling Deng Xiaobao | 2004 | American Journal of Botany2004，91，： | 1 |
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