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| 1 | Preliminary study on the origin identification of natural gas by the parameters of light hydrocarbon显示文摘The light hydrocarbon composition of 209 natural gas samples and individual light hydrocarbon carbon isotopes of 53 natural gas samples from typical humic-sourced gas and sapropelic-sourced gas in the four basins of China have been determined and analyzed.Some identification parameters for humic-sourced gas and sapropelic-sourced gas are proposed or corrected.The differences of compound-specificδ13C value of individual light hydrocarbon between humic-sourced gas and sapropelic-sourced gas have been founded.The humic-sourced gas has the distribution ofδ13C benzene > -24‰,δ13C toluene >-23‰,δ13C cyclohexane >-24‰andδ13C methyl cyclohexane >-24‰,while the sapropelicsourced gas has the distribution ofδ13C benzene <-24‰,δ13C toluene <-24‰,δ13C cyclohexane <-24‰and δ13C methyl cyclohexane <-24‰.Among the components of C7 light hydrocarbon compound,such as normal heptane(nC7),methyl cyclohexane(MCH)and dimethyl cyclopentane(ΣDMCP),etc,relative contents of nC7 and MCH are influenced mainly by the source organic matter type of natural gas.Therefore,it is suggested that the gas with relative content of nC7 of more than 30%and relative content of MCH of less than 70%is sapropelic-sourced gas,while gas with relative content of nC7 of less than 35%and relative content of MCH of more than 50%is humic-sourced gas.Among components of C5-7 aliphatics, the gas with relative content of C5-7 normal alkane of more than 30%is sapropelic-sourced gas,while the gas with relative content of C5-7 normal alkane of less than 30%is humic-sourced gas.These paremeters have been suggested to identify humic-sourced gas and sapropelic-sourced gas. | HU GuoYi 1,2,3 ,LI Jian 1,2 ,LI Jin 1,2 ,LI ZhiSheng 1,2 ,LUO Xia 1,2 ,SUN QingWu 1,2 &MA ChengHua 1,2 1 Research Institute of Petroleum Exploration and Development(Langfang Branch),Petrochina,Langfang 065007,China 2 The Key Laboratory of Gas Formation and Development,Petrochina,Langfang 065007,China 3 College of Geo-Resources and Information,China University of Petroleum,Beijing 102200,China | 2008 | Science China Earth Sciences2008,51,S1: | 19 |
| 2 | Discrimination of abiogenic and biogenic alkane gases显示文摘We have combined the analytical data of the carbon isotope distribution pattern, R/Ra and CH4/3He values of abiogenic and biogenic (referring to the thermogenic and bacterial or microbial) alkane gases in China with those of alkane gases from USA, Russia, Germany, Australia and other countries. Four discrimination criteria are derived from this comparative study: 1) Carbon isotopic composition is generally greater than -30‰ for abiogenic methane and less than -30‰ for biogenic methane; 2) Abiogenic alkane gases have a carbon isotopic reversal trend (δ 13C1> δ 13C2> δ 13C3> δ 13C4) with δ 13C1>-30‰ in general; 3) Gases with R/Ra >0.5 and δ 13C11 δ 13C2>0 are of abiogenic origin; 4) Gases (meth- ane) with CH4/3He≤106 are of abiogenic origin, whereas gases with CH4/3He≥1011 are of biogenic origin. | DAI JinXing ZOU CaiNeng ZHANG ShuiChang LI Jian NI YunYan HU GuoYi LUO Xia TAO ShiZhen ZHU GuangYou MI JingKui LI ZhiSheng HU AnPing YANG Chun ZHOU QingHua SHUAI YanHua ZHANG Ying MA ChengHua | 2008 | Science China Earth Sciences2008,51,12: | 17 |
| 3 | Identification of sex phero-mones of four economically important species in genus Dendrolimus显示文摘The female-produced sex pheromone of Den-drolimus superans was identified by gas chromatography (GC), coupled GC-mass spectrometry (GC-MS), electroan-tennographic (EAG) studies and field tests as a blend of (Z,E)-5,7-dodecadienal (Z5,E7-12:Ald) and (Z,E)-5,7-dodeca-dien-1-ol (Z5,E7-12:OH). In D. kikuchii, (Z,E)-5,7-dodeca-dien-1-yl acetate (Z5,E7-12:OAc) and Z5,E7-12:OH were found by GC and GC-MS analyses. However, in EAG studies male antennae were more sensitive to Z5,E7-12:OAc and (Z,E)-5,7-dodecadien-l-yl propionate (Z5,E7-12:OPr) than Z5,E7-12:OH. For D. spectabilis, Z5,E7-12:OH had been previously reported as the sex pheromone. However, in our studies, traps baited with Z5,E7-12:OH, Z5,E7-12:OAc and Z5,E7-12:OPr in a ratio of 1:1:1 caught three times more males than those baited with Z5,E7-12:OH alone. Relatively strong EAG responses were elicited from male antennae by Z5,E7-12:OH, Z5,E7-12:OAc and Z5,E7-12:OPr, but in addition to Z5,E7-12:OH, only very small amounts of Z5,E7-12:OAc was found in | Kong Xiangbo Zhao Chenghua Gao Wei | 2001 | Chinese Science Bulletin2001,46,24: | 12 |
| 4 | Feasibility of bioleaching combined with Fenton oxidation to improve sewage sludge dewaterability显示文摘A novel joint method of bioleaching with Fenton oxidation was applied to condition sewage sludge. The specific resistance to filtration(SRF) and moisture of sludge cake(MSC) were adopted to evaluate the improvement of sludge dewaterability. After 2-day bioleaching, the sludge p H dropped to about 2.5 which satisfied the acidic condition for Fenton oxidation.Meanwhile, the SRF declined from 6.45 × 1010 to 2.07 × 1010s2/g, and MSC decreased from91.42% to 87.66%. The bioleached sludge was further conditioned with Fenton oxidation. From an economical point of view, the optimal dosages of H2O2 and Fe2+were 0.12 and 0.036 mol/L,respectively, and the optimal reaction time was 60 min. Under optimal conditions, SRF,volatile solids reduction, and MSC were 3.43 × 108s2/g, 36.93%, and 79.58%, respectively. The stability and settleability of sewage sludge were both improved significantly. Besides,the results indicated that bioleaching-Fenton oxidation was more efficient in dewatering the sewage sludge than traditional Fenton oxidation. The sludge conditioning mechanisms by bioleaching-Fenton oxidation might mainly include the flocculation effects and the releases of extracellular polymeric substances–bound water and intercellular water. | Changgeng Liu Panyue Zhang Chenghua Zeng Guangming Zeng Guoyin Xu Yi Huang | 2015 | Journal of Environmental Sciences2015,27,2: | 12 |
| 5 | Soil Aggregate Stability and Iron and Aluminium Oxide Contents Under Different Fertiliser Treatments in a Long-Term Solar Greenhouse Experiment显示文摘Soil in greenhouses is likely to suffer a gradual decline in aggregate stability. Determination of the effects of different fertiliser practices on soil aggregate stability is important for taking advantage of solar greenhouses. Soil aggregate stability and iron(Fe) and aluminium(Al) oxide contents were investigated in a 26-year long-term fertilisation experiment in greenhouse in Shenyang, China,under eight fertiliser treatments: manure(M), fertiliser N(FN), fertiliser N with manure(MN), fertiliser P(FP), fertiliser P with manure(MP), fertiliser NP(FNP), fertiliser NP with manure(MNP), and control without any fertiliser(CK). A wet sieving method was used to determine aggregate size distribution and water-stable aggregates(WSA), mean weight diameter and geometric mean diameter as the indices of soil aggregate stability. Different fertiliser treatments had a statistically significant influence on aggregate stability and Fe and Al oxide contents. Long-term application of inorganic fertilisers had no obvious effects on the mass proportion of aggregates. By contrast, manure application significantly increased the mass proportion of macroaggregates at the expense of microaggregates. All treatments, with the exception of FNP, significantly increased the stability of macroaggregates but decreased that of microaggregates when compared with CK. Aggregation under MP and MN was better than that under M and MNP; however,no significant differences were found among inorganic fertiliser treatments(i.e., FN, FP, and FNP). A positive relation was found between pyrophosphate-extractable Fe and WSA(r = 0.269), but no significant relations were observed between other Fe and Al oxides and aggregate stability. | YIN Yan WANG Li LIANG Chenghua XI Fengming PEI Zhongjian DU Liyu | 2016 | Pedosphere2016,26,5: | 11 |
| 6 | Study of Manganese Promoter on a Precipitated Iron-Based Catalyst for Fischer-Tropsch Synthesis显示文摘猛抛的基于铁的 Fischer-Tropsch 合成(英尺) 上的锰(Mn ) 加入的效果催化剂用 N2 物理吸附被调查,空气微分热分析(DTA ) , H2 规划温度的减小(TPR ) ,和 M ? ssbauer 光谱学。催化剂的英尺表演在一个泥浆阶段反应堆被测试。描述结果显示 Mn 增加了催化剂的表面区域,并且改进了 -Fe2O3 的分散并且由于 Mn 和 Fe-Mn 相互作用的高分散效果减少了它的雏晶尺寸。Fe-Mn 相互作用也压制了 -Fe2O3 的减小到 Fe3O4,稳定了 FeO 阶段,并且(或) 减少在 H2 和 syngas 减小的催化剂的 carburization 度处理。另外,合并了 Mn 减少起始的催化剂活动,但是因为 Mn 制止了铁碳化物的氧化到 Fe3O4,改进了催化剂稳定性,并且改进了催化剂的进一步的 carburization。锰压制了 CH4 的形成并且增加了选择点亮石蜡(C=2 4 ) ,但是它在选择上有小效果到重(C5+) 烃。所有这些结果显示强壮的 Fe-Mn 相互作用作为一个电子倡导者压制了 Mn 的 chemisorptive 效果,到某程度,在猛抛的铁锰催化剂系统。 | Zhichao Tao Yong fang Chenghua Zhang Tingzhen Li Mingyue Ding Hongwei Xiang Yongwang Li | 2007 | Journal of Natural Gas Chemistry2007,16,3: | 10 |
| 7 | Using repeated precise gps campaigns for research of present-day crustal movement and strain in the Qinghai-Tibetan Plateau显示文摘The problem of crustal movement in the Qing-hai-Tibetan Plateau is a hotstopic of the present-day international geodetic world. GPS observations in 1993, 1995 and 1997 are used to survey the three-dimensional displacement of GPS monitoring station in the Qinghai-Tibetan Plateau, and to calculate and analyze the present-day crustal movement and strain in the Qinghai-Tibetan Plateau. The result of repeated campaign shows that the crustal movement in the Qinghai-Tibetan Plateau is still compressing in the north and south directions, extending in the west and east directions, and uplifting in the vertical direction. The relative convergence velocity of the Himalayan block is approximately (19.5±1.7)mm/a, the strain velocity is about (5.5±6.0) mm/a, and the uplifting velocity is some (7.6±5.2) mm/a. The compression velocity of the Tibet block relative to Golmud in the north and south directions is (9.3±4.6) mm/a, the strain velocity of the middle part in the west and east directions is (15.6±6.3) mm/a, | LIU Jingnan XU Caijun SONG Chenghua SHI Chuang JIANG Weiping DONG Lixiang | 2001 | Chinese Science Bulletin2001,46,8: | 8 |
| 8 | Study on fire retardant mechanism of nano-LDHs in intumescent system显示文摘This paper investigated the fire-retardant mechanism of the nano-LDHs in the intumescent system by the temperature programmed oxidation (TPO). Researches were also conducted to explore the function of the nano-LDHs in the composite fire-retardant agents in air and nitrogen atmosphere, respectively. The results indicated that the nano-LDHs species were responsible for the catalytic oxidation of the rich-carbon compound in oxygen atmosphere. In addition, the nano-LDHs species and their calcinated products at high temperature could increase the carbonaceous residue-shield of the carbon-rich materials, improve the quality and the graphitization degree of the formed char-layer, and accelerate the intumescence and expansion of the melting carbon-rich materials to a certain degree under the oxygen-free condition, leading to the carbonization and expansion of the intumescent layer. | ZHANG ZeJiang LAN Bin MEI XiuJuan XU ChengHua | 2007 | Science China Chemistry2007,50,3: | 7 |
| 9 | Dynamical Mechanisms of Effects of Landslides on Long Distance Oil and Gas Pipelines显示文摘According to the investigations on the oil and gas pipelines such as the Lan-Cheng-Chong pipeline and the Southwest pipeline, there are two ways of laying pipeline: pipelines paralleling (approximately) to the main slide direction and pipelines perpendicular (approximately) to the main slide direction. If earth-retaining walls have been built for pipelines paralleling to the main slide direction, they will prevent the lands from sliding; On the contrary, without earth-retaining walls, the sharp broken rocks in the backfilling soil will scratch the safeguard of the pipeline when the landslides take place. Pipelines perpendicular to the main slide direction can be classified into four types according to the relative positions between pipelines and landslides: Pipelines over the slide planes, pipelines inside the fracture strips of slide planes, pipelines below the slide planes and pipelines behind the backsides of landslides. The different dynamical mechanisms of the process in which landslide acts against pipelines are analyzed based on whether the pipelines are equipped with fixed frusta, because the sliding resistance depends on whether and how many fixed frusta are equipped and the distance between frusta. | MA Qingwen WANG Chenghua KONG Jiming | 2006 | Wuhan University Journal of Natural Sciences2006,11,4: | 7 |
| 10 | A Study of Tensile Strength Tests of Arborous Species Root System in Forest Engineering Technique of Shallow Landslide显示文摘One experiment was conducted, through tensile tests of Albazzia and Eucalypt roots culled from the fields. The other experiment was conducted, by testing anti-drawing strength of these root systems in the Albazzia and Eucalypt lands. These two experiments had an aim to give insights into the maximum tensile strength and anti-drawing strength of the root systems. Results indicated that the maximum tensile strength of root system is in an exponential relation with the diameter of root system while the maximum tensile strength is positively correlative with the diameter of root system. Anti-drawing force of root system together with root diameter, length, and soil bulk density are folded into a regression equation in an attempt to figure out the static friction coefficient between root system and its ambient soil. | YANG Yonghong LIU Shuzhen WANG Chenghua TANG Chuan | 2006 | Wuhan University Journal of Natural Sciences2006,11,4: | 6 |
| 11 | Three-Dimensional Modelling of a Multi-Layer Sandstone Reservoir: the Sebei Gas Field, China显示文摘Multi-layer sandstone reservoirs occur globally and are currently in international production.The 3D characteristics of these reservoirs are too complicated to be accurately delineated by general structural-facies-reservoir modelling.In view of the special geological features,such as the vertical architecture of sandstone and mudstone interbeds,the lateral stable sedimentation and the strong heterogeneity of reservoir poroperm and fluid distribution,we developed a new three-stage and six-phase procedure for 3D characterization of multi-layer sandstone reservoirs.The procedure comprises two-phase structural modelling,two-phase facies modelling and modeUing of two types of reservoir properties.Using this procedure,we established models of the formation structure,sand body structure and microfacies,reservoir facies and properties including porosity,permeability and gas saturation and provided a 3D fine-scale,systematic characterization of the Sebei multi-layer sandstone gas field,China.This new procedure,validated by the Sebei gas field,can be applied to characterize similar multi-layer sandstone reservoirs. | OU Chenghua WANG Xiaolu LI Chaochun HE Yan | 2016 | Acta Geologica Sinica(English Edition)2016,90,1: | 5 |
| 12 | Effect of Manganese Incorporation Manner on an Iron-Based Catalyst for Fischer-Tropsch Synthesis显示文摘系统的研究被承担调查锰加入方式的效果在上组织上,性质,体积和表面分阶段执行基于铁的 Fischer-Tropsch 合成(英尺) 的作文, reduction/carburization 行为,和表面盐基度催化剂。催化剂样品被 N2 physisorption 描绘, X 光检查光电子光谱学(XPS ) , H2 (或公司) 规划温度的减小(TPR ) , CO2 规划温度的解吸附作用(TPD ) ,和 M ? ssbauer 光谱学。催化剂的英尺表演连续地在一个泥浆阶段被学习搅动的坦克反应堆(CSTR ) 。描述结果显示使用一起沉淀方法合并的锰倡导者能改进氧化铁的分散,并且减少氧化铁雏晶的尺寸。与受精方法合并的锰在催化剂的表面上被充实。因为锰的过多的丰富,与受精方法增加的锰倡导者在催化剂表面上在 H2,公司,和 syngas 压制催化剂的减小和 carburization。催化剂补充说用一起沉淀方法的锰为重烃(C12+) 有最高的公司变换(51.9%) 和最低选择。 | Tingzhen Li Yong Yang Chenghua Zhang Zhichao Tao Haijun Wan Xia An Hongwei Xiang Yongwang Li | 2007 | Journal of Natural Gas Chemistry2007,16,3: | 5 |
| 13 | Analysis of Rockfall and Its Impact on the Cut-and-Cover Tunnel in Dynamics显示文摘This paper presents the effect of thickness of Buffer layer on the safety of cut-and-cover tunnel under the given magnitude and height of rockfall, and the limit load of the structure. To establish calculating models of rockfall in different conditions, the dynamics of the fall down to the surface of the slope is taken into account and the exterior characteristics of the rockfall is analyzed. We have derived the formula for calculating velocity of rocks before and after collision, calculated the impact load upon the structures below and the limit load, and compared the impact force and limit load to judge the safety of the structure. Finally, the validity of models is approved by the safety evaluation of cut-and-cover tunnel in the mouth of Heshang Mountain in Nandan County. | SONG Shuzhi KONG Jiming WANG Chenghua CHENG Zefu YANG Zongji | 2006 | Wuhan University Journal of Natural Sciences2006,11,4: | 5 |
| 14 | Graphene oxide:An emerging electromaterial for energy storage and conversion显示文摘This paper gives a comprehensive review of the recent progress on electrochemical energy storage devices using graphene oxide(GO).GO,a single sheet of graphite oxide,is a functionalised graphene,carrying many oxygen-containing groups.This endows GO with various unique features for versatile applications in batteries,capacitors and fuel cells.Specific applications are considered principally including use in electrodes as the active materials to enhance the performance or as substrates to diversify the structures,in solid-state electrolytes and membranes to improve the ionic conductivity and mechanical properties,and in interlayers to protect the electrodes,membranes or current collectors.Furthermore,the challenges and future prospects are discussed in the paper for encouraging further research and development of GO applications. | Yuheng Tian Zhichun Yu Liuyue Cao Xiao Li Zhang Chenghua Sun Da-Wei Wang | 2021 | Journal of Energy Chemistry2021,30,4: | 5 |
| 15 | Direct observation of Pt nanocrystal coalescence induced by electron-excitation-enhanced van der Waals interactions显示文摘 | Ying Jiang Yong Wang Yu Yang Zhang Zhengfei Zhang Wentao Yuan Chenghua Sun Xiao Wei Casey N. Brodsky Chia-Kuang Tsung Jixue Li Xiaofeng Zhang Scott X. Mao Shengbai Zhang Ze Zhang | 2014 | Nano Research2014,7,3: | 4 |
| 16 | Enhancing hydrogen evolution of MoS_(2) basal planes by combining single-boron catalyst and compressive strain显示文摘M0 S2 is a promising candidate for hydrogen evolution reaction(HER),while its active sites are mainly distributed on the edge sites rather than the basal plane sites.Herein,a strategy to overcome the inertness of the M0 S2 basal surface and achieve high HER activity by combining single-boron catalyst and compressive strain was reported through density functional theory(DFT)computations.The ab initio molecular dynamics(AIMD)simulation on B@MoS2 suggests high thermodynamic and kinetic stability.We found that the rather strong adsorption of hydrogen by B@MoS2 can be alleviated by stress engineering.The optimal stress of -7%can achieve a nearly zero value of △Gh(〜-0.084 eV),which is close to that of the ideal Pt-SACs for HER.The novel HER activity is attributed to(i)the Bdoping brings the active site to the basal plane of M0 S2 and reduces the band-gap,thereby increasing the conductivity;(ii)the compressive stress regulates the number of charge transfer between(H)-(B)-(MoS2),weakening the adsorption energy of hydrogen on B@MoS2.Moreover,we constructed a SiN/B@MoS2 heterojunction,which introduces an 8.6%compressive stress for B@MoS2 and yields an ideal AGh-This work provides an effective means to achieve high intrinsic HER activity for M0 S2. | Zhitao Cui Wei Du Chengwei Xiao Qiaohong Li Rongjian Sa Chenghua Sun Zuju Ma | 2020 | Frontiers of physics2020,15,6: | 4 |
| 17 | Ni-induced stepwise capacity increase in Ni-poor Li-rich cathode materials for high performance lithium ion batteries显示文摘Li 富有的阴极材料为高精力的锂离子电池(解放) 被认为候选人同样有希望。在这研究,我们报导Li富有的材料的一个新系列(李[李<潜水艇class=“ a-plus-plus ”> 1/32x/3 Mn <潜水艇class=“ a-plus-plus ”> 2/3x/3 Ni <潜水艇class=“ a-plus-plus ”> x ]O 2 ( 0.09 x 0.2 ))在解放作为阴极材料与 Ni 的小数量做了,它由于李的连续激活展出了能力增加的不平常的现象直到十个周期<潜水艇class=“ a-plus-plus ”> 2 MnO <潜水艇class= a-plus-plus > 3 阶段。试验性、计算的结果显示不同于通常学习的做 Ni 的 Li 富有的阴极材料,做的 Ni 的更小的数量能提拔逐步的李 < 潜水艇 class= “ a-plus-plus ” > 2 MnO < 潜水艇 class= “ a-plus-plus ” > 获得的 3 激活增加了特定的能力和更好骑车的能力。相反,过多的 Ni 愿望在激活上李 < 潜水艇 class= “ a-plus-plus ” > 2 MnO < 潜水艇 class= “ a-plus-plus ” > 在在第一的大能力损失的 3 和结果骑车。李<潜水艇class=“ a-plus-plus ”> 1.25 Mn <潜水艇class=“ a-plus-plus ”> 0.625 Ni <潜水艇class=“ a-plus-plus ”> 0.125 O <潜水艇class=“ a-plus-plus ”>有 Ni 的一个优化内容的 2 材料高交付了上级能力 280 mAh ?瀠汯??瑳特湥?潣洭污楥??€ ????????????????????楢慬敹?????搠獩潣摩污?慮潮慰瑲捩敬?? | Delai Ye Chenghua Sun Yu Chen Kiyoshi Ozawa Denisa Hulicova-JurcakovaI Jin Zou Lianzhou Wang | 2015 | Nano Research2015,8,3: | 4 |
| 18 | Intrastriatal glial cell line-derived neurotrophic factors for protecting dopaminergic neurons in the substantia nigra of mice with Parkinson disease显示文摘BACKGROUND:Substantia nigra is deep in position and limited in range,the glial cell line-derived neurotrophic factor(GDNF)injection directly into substantia nigra has relatively greater damages with higher difficulty.GDNF injection into striatum,the target area of dopaminergic neuron,may protect the dopaminergic neurons in the compact part of substantia nigra through retrograde transport.OBJECTIVE:To investigate the protective effect of intrastriatal GDNF on dopaminergic neurons in the substantia nigra of mice with Parkinson disease(PD),and analyze the action pathway.DESIGN:A controlled observation.SETTING:Neurobiological Laboratory of Xuzhou Medical College.MATERIALS:Twenty-four male Kunming mice of 7-8 weeks old were used.GDNF,1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine(MPTP)were purchased from Sigma Company(USA);LEICAQWin image processing and analytical system.METHODS:The experiments were carried out in the Neurobiological Laboratory of Xuzhou Medical College from September 2005 to October 2006.The PD models were established in adult KunMing mice by intraperitoneal injection of MPTP.The model mice were were randomly divided into four groups with 6 mice in each group:GDNF 4-day group,phosphate buffer solution(PSB)4-day group,GDNF 6-day group and PSB 6-day group.Mice in the GDNF 4 and 6-day groups were administrated with 1 μL GDNF solution(20 μg/L,dispensed with 0.01 mol/L PBS)injected into right striatum at 4 and 6 days after model establishment.Mice in the PSB 4 and 6-day groups were administrated with 0.01 mol/L PBS of the same volume to the same injection at corresponding time points.② On the 12th day after model establishment,the midbrain tissue section of each mice was divided into 3 areas from rostral to caudal sides.The positive neurons of tyroxine hydroxylase(TH)and calcium binding protein(CB)with obvious nucleolus and clear outline were randomly selected for the measurement,and the number of positive neurons in unit area was counted.MAIN OUTCOME MEASURES:Number of positive neurons of TH and CB in midbrain substantia nigra of mice in each group.RESULTS:All the 24 mice were involved in the analysis of results.The numbers of TH+ and CB+ neurons in the GDNF 4-day group(54.33±6.92,46.33±5.54)were obviously more than those in the PBS 4-day group(27.67±5.01,21.50±5.96,P < 0.01).The numbers of TH+ and CB+ neurons in the GDNF 6-day group(75.67±5.39,69.67±8.69)were obviously more than those in the PBS 6-day group(27.17±4.50,21.33±5.72,P < 0.01)and those in the GDNF 4-day group(P < 0.01).CONCLUSION:Intrastriatal GDNF can protect dopaminergic neurons in substantia nigra of PD mice,and it may be related to the increase of CB expression. | Chenghua Xiao Yanqiang Wang Hongmei Liu Hongjun Wang Junping Cao Dianshuai Gao | 2007 | Neural Regeneration Research2007,2,4: | 4 |
| 19 | Facile synthesis of porous nitrogen-doped holey graphene as an efficient metal-free catalyst for the oxygen reduction reaction显示文摘做氮的 graphene 是为氧减小反应(ORR ) 的高贵基于金属的 electrocatalysts 的代替的一个有希望的候选人。进做氮的 graphene 的毛孔和洞的增加由介绍丰富的暴露的边提高 ORR 活动,加速集体转移,并且阻碍 graphene 表的聚集。此处,我们在场为经由脲和镁醋酸盐 tetrahydrate 的热分解产生多孔的有穴的做氮的 graphene (PHNG ) 的直接却有效的策略。由于联合效果在里面 situ 产生了气体和 MgO nanoparticles,综合 PHNG 在弄皱的 graphene 之中展示了不仅众多的 out-of-plane 毛孔在装配 graphene 的表,而且贯穿的 nanoscale (5-15 nm ) 洞。而且,做 PHNG 的配置的氮被 thermal 以后处理在不同温度优化。pyridinic 和第四级的氮的全面内容断然与 ORR 活动相关,这被发现;特别地, pyridinic 氮为 ORR 产生最理想的特征。这个工作为基于 PHNG 的材料的合成揭示新线路并且阐明到 ORR 的各种各样的氮种类的贡献。 | Li Qin Ruimin Ding Huixiang Wang Jianghong Wu Conghui Wang Chenghua Zhang Yao Xu Liancheng Wang Baoliang Lv | 2017 | Nano Research2017,10,1: | 3 |
| 20 | Structural geometrical analysis and simulation of decollement growth folds in piedmont Fauqi Anticline of Zagros Mountains, Iraq显示文摘This study carried out detailed structural analyses of the plane structural deformation pattern and sectional structural deformation styles of the Fauqi Anticline by the 3D seismic section with full cover collection, and carried out the kinematical simulation of the Fauqi anticlinal deep decollement coupling shallow growth folds and faults based on the fault decollement fold model and the forward balanced geological section technique. The study subsequently evaluated the differentiated petroleum enrichment mechanism of the Fauqi Anticline by utilizing the results of the structural analysis and combining the spatial-temporal relationship analysis of the source, the reservoir, and the caprock. The results showed that the differentiated plane structural deformation pattern and hierarchical sectional structural deformation style were developed by the superposed coupling of deep decollement, syntectonic sedimentation of shallow growth strata, and the compression of the south-west horizontal tectonic stress from the Zagros Mountains. It was found that the differentiated structural deformation caused the differentiated enrichment of petroleum in the Fauqi Anticline. It was also found that the horizontal slip distance of the Fauqi Anticlinal Folds reached around 3.5 km by the simulation of deep decollement coupling the movement of the shallow growth folds and the faults. | OU ChengHua CHEN Wei LI ChaoChun ZHOU WenJiang | 2016 | Science China Earth Sciences2016,59,9: | 3 |