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Origin and depositional model of deep-water lacustrine sandstone deposits in the 7th and 6th members of the Yanchang Formation(Late Triassic),Binchang area,Ordos Basin,China

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Petroleum Science 2017年第1期14卷 24-36页

作者： Xi-Xiang Liu Xiao-qi Ding shao-Nan Zhang Hao He State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation Southwest Petroleum UniversityChengdu 610500SichuanChina School of Geoscience and Technology Southwest Petroleum UniversityChengdu 610500SichuanChina College of Energy Chengdu University of TechnologyChengdu 610059SichuanChina Second Production Plant Petro China Changqing Oilfield CompanyQinyang 745000GansuChina

Sandstones attributed to different lacustrine sediment gravity flows are present in the 7th and 6th members of the Yanchang Formation in the Ordos Basin, China. These differences in their origins led to different sandstone distributions which control the scale and connectivity of oil and gas reservoirs. Numerous cores and outcrops were analysed to understand the origins of these sandstones. The main origin of these sandstones was analysed by statistical methods, and well logging data were used to study their vertical and horizontal distributions. Results show that the sandstones in the study area accu- mulated via sandy debris flows, turbidity currents and slumping, and sandy debris flows predominate. The sand- stone associated with a single event is characteristically small in scale and exhibits poor lateral continuity. How- ever, as a result of multiple events that stacked gravity flow-related sandstones atop one another, sandstones are extensive overall, as illustrated in the cross section and isopach maps. Finally, a depositional model was developed in which sandy debris flows predominated and various other types of small-scale gravity flows occurred frequently, resulting in extensive deposition of sand bodies across a large area.

关键词： Sediment gravity flows - Sandy debris flows -Binchang area Yanchang Formation Ordos Basin

Perspective of energy transfer from light energy into biological energy

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Green Energy & Environment 2017年第1期2卷 18-22页

作者： Mingjun Xuan Jie Zhao Jingxin shao qi Li Junbai Li Beijing National Laboratory for Molecular Sciences (BNLMS) CAS Key Lab of Colloid Interface and Chemical Thermodynamics Institute of ChemistryChinese Academy of Sciences University of Chinese Academy of Sciences

Energy has always been the most concerned topic in the world due to the large consumption. Various types of energy have been exploited and developed to enhance the output amount so that high requirements can be met. Like the hydro-energy, wind energy, and tidal energy, light energy as a renewable, clean, and widespread energy can be easily harvested. In microcosmic scale, some specific proteins and enzymes in green plants and bacteria play an important role in light harvest and energy conversion via photosynthesis. Inspired by the biomimetic sparks,these bioactive macromolecules and some artificially synthetic unites have been integrated together to improve the light-harvesting, and enhance their utilization efficiency. In this feature article, we primarily discuss that how to create the bio-inorganic hybrid energy converted system via biomimetic assembly strategy and artificially achieve the transformation from light into bioenergy, meanwhile highlight some promising works.

关键词： Biomimetic Molecular assembly Energy conversion Light Bioenergy

A Facile Synthesis of Benzoxazolyl Cyclopropanes

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Chinese Chemical Letters 2002年第5期13卷 407-409页

作者： Jian Guo shao Pei Yu WANG Ming ZHENG qi ZHONG Department of Chemistry Yangzhou UniversityYangzhou 225002

Benzoxazolyl substituted cyclopropane derivatives were synthesized in the yield of 73-89% from the reaction of telluronium ylides with chalcones.

关键词： Telluroniun ylids telluronium salt benzoxazolyl cycloprpane.

Cubic metric improvement of aggregated carriers for downlink transmission in LTE-advanced

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The Journal of China Universities of Posts and Telecommunications 2011年第1期18卷 60-63,90页

作者： ZHANG shao-xin ZHOU Jun ZHU Hong-bo ZHU qi Jiangsu Key Laboratory of Wireless Communications College of Telecommunication and Information Engineering Nanjing University of Posts and Telecommunications Nanjing 210003 China

To meet long term evolution-advanced （LTE-A） requirements of wider bandwidth and maintain backwards compatibility with LTE release 8 （Rel-8） simultaneously, carrier aggregation has been agreed by the third generation partnership project （3GPP）. High cubic metric （CM） values and peak-to-average power ratio （PAPR） of aggregated component carriers （CCs） exists as an unpleasant issue for both uplink and downlink （DL） transmission. For DL transmission, to use distinct cell ID per DL CC to generate DL reference signal （RS） sequence can mitigate this problem but will cause some other issues on the corresponding uplink carrier. This article proposes two approaches to solve the problem of high CM/PAPR by introducing new variables to change the cell-specific DL RS sequence. In both methods, same cell identifier （cell ID） is allocated to all DL CCs. Simulation results show the performance improvements and prove the effectivity of our proposed approaches.

关键词： LTE-A CC CM/PAPR DL RS ccll ID CC ID total numbcr of aggregatcd CCs

Low cyclic fatigue behavior of electron-beam-welded Ti–6Al–4V titanium joint

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Rare Metals 2016年第3期35卷 230-234页

作者： Hong-Yu qi Li-qiang Ma shao-Lin Li Xiao-Guang Yang School of Energy and Power Engineering Beihang UniversityBeijing 100191China Collaborative Innovation Center of Advanced Aero-Engine Beijing 100191China

The low cycle fatigue（LCF） tests were carried out using symmetrical cyclic loading under total strain amplitude control *** present paper is devoted to investigating the cyclic deformation response of Ti–6Al–4V titanium and the electron-beam-welded（EBW） joint in the following aspects,i.e.,cyclic deformation behavior,fatigue life and fatigue fracture *** results show that the softening of the joint is significant at larger strain ranges,while not obvious at smaller strain *** joint shows shorter fatigue life at larger strain ranges and equivalent fatigue life at smaller strain ranges compared with Ti–6Al–4V base metal.A fatigue crack of the joint not only originates at the surface or subsurface,but also at defects in the fusion zone（FZ）.The crack propagation zone of Ti–6Al–4V base metal shows ductile fracture mechanism,while the joint shows brittle fracture *** all the fatigue fracture zones many dimples appear,showing the typical ductile fracture.

关键词： Ti–6Al–4V titanium alloy Electron beam welding Low cyclic fatigue Fracture analysis

Effects of Molecular Weight on the Crystallization and Melting Behaviors of Poly(L-lactide)

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Chinese Journal of Polymer Science 2016年第1期34卷 69-76页

作者： Sheng Xiang shao Jun 李杲边新超 Li-dong Feng Xue-si Chen Feng-qi Liu shao-yong Huang Key Laboratory of Polymer Ecomaterials Changchun Institute of Applied Chemistry Chinese Academy of Sciences University of Chinese Academy of Sciences College of Chemistry and Chemical Engineering Jiangxi Normal University College of Chemistry Jilin University

In this study, a series of monodispersed poly（L-lactide）（PLLA） were synthesized by the ring-opening polymerization with Schiff base aluminum catalyst, and the effects of the number-average molecular weight（Mn） on the crystallization and melting behaviors of PLLA were investigated by differential scanning calorimetry（DSC） and wide-angle X-ray diffraction（WAXD）. The total crystallization rate of PLLA was Mn-dependent, which reached the maximum value for PLLA with Mn of 18.6 kg/mol. In addition, when Mn of PLLA was 18.6 kg/mol, the melting enthalpy（ΔHm） showed a maximum value（87.1 J/g）, which was the highest reported value till now. The critical temperature for change of crystal formation from ？-form to ？-form crystals increased in the isothermal crystallization process with Mn increasing. In the reheating procedure, high-Mn PLLA demonstrated a small exothermal peak prior to the dominant melting peak, corresponding to crystal transition from ？- to ？-form, but low-Mn PLLA didn＇t show the peak of crystal transition. These different crystallization and melting behaviors were attributed to the different chain mobility of PLLA with different Mn.

关键词： Poly(L-lactide) Crystallization behavior Melting behavior Crystal transition

New insight into effect of potential on degradation of Fe-N-C catalyst for ORR

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Frontiers in Energy 2021年第2期15卷 421-430页

作者： Yanyan GAO Ming HOU manman qi Liang HE Haiping CHEN Wenzhe LUO Zhigang shao Fuel Cell System and Engineering Laboratory Key Laboratory of Fuel Cells&Hybrid Power SourcesDalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023China University of Chinese Academy of Sciences Beijing 100049China

In recent years,Fe-N-C catalyst is particularly attractive due to its high oxygen reduction reaction(ORR)activity and low cost for proton exchange membrane fuel cells(PEMFCs).However,the durability problems still pose challenge to the application of Fe-N-C *** considerable work has been done to investigate the degradation mechanisms of Fe-N-C catalyst,most of them are simply focused on the active-site decay,the carbon oxidation,and the demetalation *** fact,the 2e−pathway in the ORR process of Fe-N-C catalyst would result in the formation of H2O2,which is proved to be a key degradation *** this paper,a new insight into the effect of potential on degradation of Fe-N-C catalyst was provided by quantifying the H2O2 *** this case,stability tests were conducted by the potential-static method in O2 saturated 0.1 mol/L *** the tests,H2O2 was quantified by rotating ring disk electrode(RRDE).The results show that compared with the loading voltage of 0.4 V,0.8 V,and 1.0 V,the catalysts being kept at 0.6 V exhibit a highest H2O2 *** is found that it is the combined effect of electrochemical oxidation and chemical oxidation(by aggressive radicals like H2O2/radicals)that triggered the highest H2O2 release rate,with the latter as the major cause.

关键词： proton exchange membrane fuel cells(PEMFCs) oxygen reduction reaction(ORR) Fe-N-C catalyst potential H2O2 degradation

Energy in critical collapse

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Communications in Theoretical Physics 2023年第12期75卷 97-104页

作者： Yu Hu Jun-qi Guo Junbin Li Cheng-Gang shao Hongsheng Zhang MOE Key Laboratory of Fundamental Physical Quantities Measurement Hubei Key Laboratory of Gravitation and Quantum PhysicsPGMFand School of PhysicsHuazhong University of Science and TechnologyWuhan 430074HubeiChina School of Physics and Technology University of JinanJinan 250022ShandongChina Department of Mathematics Sun Yat-sen UniversityGuangzhou 510275GuangdongChina

We study the energy issue in critical *** is found that in critical collapse,the contribution from the material energy is greater than that from the gravitational *** quantity m/r plays an important role in identifying the formation of an apparent horizon in gravitational collapse,where m is the Misner-Sharp mass and r is the areal *** observe that in critical collapse,the maximum value of m/r fluctuates between 2/15 and 4/*** denotes a large gap between critical collapse and black hole formation for which the criterion is m/r=1/2.

关键词： quasi-local energy critical collapse numerical relativity

Anti-carbon deposition performance of twinned HZSM-5 encapsulated Ru in the toluene alkylation with methanol

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Chinese Journal of Chemical Engineering 2023年第9期61卷 1-8页

作者： Guixian Li Tao Tian Hanxu Li Jinlian Li Tingna shao qi Zhang Peng Dong School of Petrochemical Engineering Lanzhou University of TechnologyLanzhou 730050China Key Laboratory of Low Carbon Energy and Chemical Engineering of Gansu Province Lanzhou 730050China

Toluene methylation with methanol to produce para-xylene has been extensively and intensively ***,the methanol-to-hydrocarbons(MTH)side reaction in this reaction is difficult to be inhibited,which will cause a mass of carbon deposition and cover the catalyst surface,resulting in catalyst ***,a dual-functional Ru@HZSM-5 catalyst with high para-selectivity and low carbon deposition was prepared by encapsulating Ru metal with *** to catalytic performance studies,the Ru@HZSM-5 catalyst produced xylene selectivity of 98%and para-xylene selectivity of 96%.Meanwhile,we find that carbon precursors(***)were very little when Ru catalyst was used,but the results of HZSM-5 catalyst were completely ***@HZSM-5 catalyst achieves a lower carbon deposition rate of only 6%of *** main possible reason for this is that the initial C-C bond between methanol and the olefin is difficult to form.

关键词： Twinned HZSM-5 Encapsulated metal Shape-selective catalysis Anti-carbon deposition