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Optimal operation of multi-storage tank multi-source system based on storage policy

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2010年第8期11卷 571-579页

作者： Hai-en FANG Jie ZHANG jin-liang gao School of Municipal and Environment Engineering Harbin Institute of Technology Harbin 150090 China

A two-stage method is developed to solve a new class of multi-storage tank multi-source (MTMS) systems. In the first stage, the optimal storage policy of each tank is determined according to the electricity tariff, and the ground-level storage tank is modeled as a node. In the second stage, the genetic algorithm, combined with a repairing scheme, is applied to solve the pump scheduling problem. The objective of the pump scheduling problem is to ensure that the required volume is adequately provided by the pumps while minimizing the operation cost (energy cost and treatment cost). The decision variables are the settings of the pumps and speed ratio of variable-speed pumps at time steps of the total operational time horizon. A mixed coding methodology is developed according to the characteristics of the decision variables. Daily operation cost savings of approximately 11% are obtained by application of the proposed method to a pressure zone of S. Y. water distribution system (WDS), China.

关键词： Multi-storage tank system Storage policy Genetic algorithm Repairing scheme Pump scheduling

Highly improved hydrogen storage dynamics of nanocrystalline and amorphous NdMg12-type alloys by mechanical milling

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Journal of Iron and Steel Research International 2020年第10期27卷 1236-1246页

作者： Ying-chun Liu Yan Qi Wei Zhang jin-liang gao Yang-huan Zhang China National Institute of Standardization Beijing 100191China Department of Functional Material Research.Central Iron and Steel Research Institute Beijing 100081China Weishan Cisri Rare Earth Materials Co. Ltd.Jining 277600ShandongChina

To improve the hydrogenation and dehydrogenation dynamics of NdMg12-type alloy,we replaced part of Mg with Ni in thesamples and used the ball milling method to prepare NdMg11Ni+x wt.%Ni(x=100,200)*** infuences of millingduration and Ni content on the electrochemical and gascous dynamics of the samples were studied in ***-tion activation cnergies of samples were calculated by using Kissinger and Arrhenius *** conclusions show thatthe dynamic properties of samples are significantly enhanced with the increase in Ni *** the change of the miling duration,the gaseous hydrogenation rate and high rate discharging capability reach the maximal ***,thedehydrogenation dynamics of sample alloys are always enhanced with the prolonging of milling *** concretely,prolonging milling duration from 5 to 60 h improves the dehydrogenation ratio of NdMgNi+100 wt.%Ni alloy from58.03%to 64.81%and that of NdMgNi+200 wt.%Ni alloy from 62.20%to 71.59%.Besides,the enhancement of gaseoushydrogen storage dynamics of the samples is believed to be the result of the declined dehydrogenation activation energyresulted from the increase in milling duration and Ni content.

关键词： NdMg12 alloy Hydrogen storage dynamics Activation energy Mechanical milling Ni addition

Formation mechanism of fault accommodation zones under combined stress in graben basin:Implications from geomechanical modeling

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Petroleum Science 2024年第1期21卷 54-76页

作者： Qi-Qiang Ren jin-liang gao Rong-Tao Jiang jin Wang Meng-Ping Li Jian-Wei Feng Institute of Sedimentary Geology Chengdu University of TechnologyChengdu 610059SichuanChina PetroChina Research Institute of Petroleum Exploration and Development Beijing100083China Jianghan Oilfield Oil and Gas Production Capacity Construction Management Center Chongqing408000China Sinopec Chongqing Fuling Shale Gas Exploration and Development Company Chongqing408000China College of Energy Chengdu University of TechnologyChengdu 610059SichuanChina School of Geoscience China University of Petroleum(East China)Qingdao 266580ShandongChina

A fault accommodation zone is a type of structure that is defined as regulating displacement and strain between faults *** numbers of fault accommodation zones are being identified in graben basins,indicating the potential exploration target and petroleum accumulation *** study aims to analyze the formation mechanism and development of fault accommodation zones under combined stress by a numerical simulation method considering geomechanical *** three-dimensional(3-D)seismic interpretation and fractal dimension method,exampled with the Dongxin fault zone,the fault activity and fault combination pattern were conducted to quantitatively characterize the activity difference in fault accommodation *** with mechanical experiment test,a geomehcanical model was established for fault accommodation zones in a graben *** the paleostress numerical simulations and structural physical simulation experiment,the developmental characteristics and genetic mechanism of fault accommodation zones were *** by multi movements and combined stresses,three significant tectonic evolution stages of the Dongxing Fault Zone(DXFZ)were distinguished:During the E_(s)^(3)sedimentary period,the large difference in the stress,strain,and rupture distribution in various faults were significant,and this stage was the key generation period for the prototype of the DXFZ,including the FAZ between large-scale *** the E_(s)^(2)sedimentary period,the EW-trending symmetric with opposite dipping normal faults and the NE-SW trending faults with large scale were furtherly *** junction area of two secondary normal faults were prone to be ruptured,performing significant period for inheriting and developing characteristics of fault accommodation *** the Es1 sedimentary period,the high-order faults in the DXFZ exhibited the obvious fault depressions and strike-slip activity,and the fault accommodation zones were

关键词： Fault accommodation zone Graben basin Fault activity Tectonic physical simulation experiment Finite element numerical simulation Dongxin fault zone

Hydrogen storage thermodynamic and kinetic characteristics of PrMg12-type alloys synthesized by mechanical milling

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Journal of Iron and Steel Research International 2017年第2期24卷 198-205页

作者： jin-liang gao Yan Qi Ya-qin Li Hong-wei Shang Dong-liang Zhao Yang-huan Zhang Weishan Cisri-Eare Earth Materials Co. Ltd. Jining 277600 Shandong China Department of Functional Material Research Central Iron and Steel Research Institute Beijing 100081 China

To improve the hydrogen storage performance of PrMg12-type alloys, Ni was adopted to replace partially Mg in the alloys. The PrMgllNi＋x wt.% Ni （x=100, 200） alloys were prepared via mechanical milling. The phase structures and morphology of the experimental alloys were in vestigated by X-ray diffraction and transmission electron microscopy. The results show that increasing milling time and Ni content accelerate the formation of nanocrystalline and amorphous structure. The gaseous hydrogen storage properties of the experimental alloys were determined by differential scanning calorimetry （DSC） and Sievert apparatus. In addition, increasing milling time makes the hydrogenation rates of the alloys augment firstly and decline subsequently and the dehydrogenation rate always increases. The maximum capacity is 5. 572 wt. % for the x = 100 alloy and 5. 829 wt. % for the x = 200 alloy, respectively. The enthalpy change （ △H ）, entropy change （△S） and the dehydrogenation activation energy （Exde） markedly lower with increasing the milling time and the Ni content due to the generation of nanocrystalline and amorphous structure.

关键词： PrMg12 alloy Mechanical milling Activation energy Hydrogen storage dynamics Thermodynamics

A novel fracture-cavity reservoir outcrop geological knowledge base construction method considering parameter collection and processing,mutual transformation of data-knowledge,application and update

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Petroleum Science 2024年第4期21卷 2184-2202页

作者： Qi-Qiang Ren jin-liang gao Peng Zhu Meng-Ping Li Jian-Wei Feng Qiang jin San Zhang Institute of Sedimentary Geology Chengdu University of TechnologyChengdu610059SichuanChina PetroChina Research Institute of Petroleum Exploration and Development Beijing100083China School of Energy Chengdu University of TechnologyChengdu610059SichuanChina School of Resources and Geosciences China University of Mining and TechnologyXuzhou221018JiangsuChina School of Geosciences China University of Petroleum(East China)Qingdao266580ShandongChina School of Geosciences Yangtze UniversityWuhan430100HubeiChina

This study endeavors to formulate a comprehensive methodology for establishing a Geological Knowledge Base(GKB)tailored to fracture-cavity reservoir outcrops within the North Tarim *** acquisition of quantitative geological parameters was accomplished through diverse means such as outcrop observations,thin section studies,unmanned aerial vehicle scanning,and high-resolution ***,a three-dimensional digital outcrop model was generated,and the parameters were *** assessment of traditional geological knowledge was conducted to delineate the knowledge framework,content,and system of the *** basic parameter knowledge was extracted using multiscale fine characterization techniques,including core statistics,field observations,and microscopic thin section *** mechanism knowledge was identified by integrating trace elements from filling,isotope geochemical tests,and water-rock simulation *** representational knowledge was then extracted by employing various methods such as multiple linear regression,neural network technology,and discriminant ***,an analogy study was performed on the karst fracture-cavity system(KFCS)in both outcrop and underground reservoir *** results underscored several key findings:(1)Utilization of a diverse range of techniques,including outcrop observations,core statistics,unmanned aerial vehicle scanning,high-resolution cameras,thin section analysis,and electron scanning imaging,enabled the acquisition and standardization of *** facilitated effective management and integration of geological parameter data from multiple sources and scales.(2)The GKB for fracture-cavity reservoir outcrops,encompassing basic parameter knowledge,key mechanism knowledge,and significant representational knowledge,provides robust data support and systematic geological insights for the intricate and in-depth examination of the genetic mechanisms of fracture-cavity reservoi

关键词： Geological knowledge base Karst fracture-cavity system Mutual transformation of data-knowledge Knowledge base content and application Tarim basin

Structure and electrochemical performances of as-milled LaMg12-type alloy-Ni composites

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Journal of Iron and Steel Research International 2019年第1期26卷 59-68页

作者： Wen-gang Bi Wei Zhang jin-liang gao Yan Qi Dong-liang Zhao Xiao-ping Dong Yang-huan Zhang Department of Functional Material Research Central Iron and Steel Research InstituteBeijing 100081China Key Laboratory of Integrated Exploitation of Baiyun Obo Multi-Metal Resources Inner Mongolia University of Science and TechnologyBaotou 014010Inner MongoliaChina Weishan Cisri-Eare Earth Materials Co. LtdJining 277600ShandongChina Department of Mechanical Engineering Hebei UniversityBaoding 071002HebeiChina

LaMg11Ni+x wt.%Ni(x=100,200)alloys were prepared by ball milling and researched by various methods to study their structure and electrochemical hydrogen storage *** outcomes reveal that increasing Ni content contributes to improving its electrochemical ***,the discharge capacity of as-milled(40 h)alloy will be increased from 157.3 to 1053.5 mAh/g through enhancing Ni percentage from 100 to 200 wt.%when discharging at 60 mAh/*** milling obviously affects the electrochemical performanee of *** milling duration prolonging,the discharge capacity of x=100 alloy keeps increasing,while that of the x=200 alloy has a maximum *** time also affects the cycle stability of experimental *** ng milli ng duration clearly decreases the cycle stability of x=100 alloy but weakens that of the x=200 alloy at first and strengthens it *** addition,prolonging milling time makes the milling prepared x=100 and 200 alloys get the maximal values of high rate discharge ability of 81.60%and 84.52%,respectively.

关键词： LaMg12 alloy Mechanical milling Ni content Microstructure Hydrogen storage performance

A Comparison Study of Hydrogen Storage Thermodynamics and Kinetics of YMg11Ni Alloy Prepared by Melt Spinning and Ball Milling

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Acta Metallurgica Sinica(English Letters) 2017年第11期30卷 1040-1048页

作者： Yang-Huan Zhang Wei Zhang jin-liang gao Ze-Ming Yuan Wen-Gang Bu Yan Qi Key Laboratory of Integrated Exploitation of Baiyun Obo Multi-Metal Resources Inner Mongolia University of Science and Technology Baotou 014010 China Department of Functional Material Research Central Iron and Steel Research Institute Beijing 100081 China Weishan Cisri-Eare Earth Materials Co. Ltd. Jining 277600China

Melt spinning （MS） and ball milling （BM） were employed to fabricate YMg11Ni alloy, and their structures and hydrogen storage performances were examined. The results reveal that the as-spun and as-milled alloys both exhibit the nanocrystalline and amorphous structure. The as-milled alloy shows a larger hydrogen absorption capacity as compared with the as-spun alloy. More than that, the as-milled alloy exhibits lower onset hydrogen desorption temperature than the as-spun one, which are 549.8 and 560.9 K, respectively. Additionally, the as-milled alloy shows a superior hydrogen desorption property to the as-spun one. On the basis of the time needed by desorbing hydrogen of 3 wt% H2, for the as- milled alloy, it needs 1106, 456, 343, and 180 s corresponding to hydrogen desorption temperatures of 593, 613, 633, and 653 K. However, for the as-spun alloy, the time needed is greater than 2928, 842, 356, and 197 s corresponding to the same temperatures. Hydrogen desorption activation energies of as-milled and as-spun alloys are 98.01 and 105.49 kJ/mol, respectively, which is responsible for that the as-milled alloy possesses a much faster dehydriding rate. By means of the measurement of pressure-composition-temperature （P-C-T） curves, the dehydrogenation enthalpy change of the alloys prepared by MS （△Hoe（MS）） and BM （△Hdc（BM）） is 81.84 and 79.46 kJ/mol, respectively, viz. △Hde（MS）〉 △Hoc（BM）.

关键词： Mg-based alloy Ball milling Melt spinning Hydrogen storage kinetics Comparison

Local magnetic moment oscillation around an Anderson impurity on graphene

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Science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 192-201页

作者： Shuai Li Zhen Ma jin-Hua gao School of Science Hebei University of Science and Technology School of Electronics and Information Zhengzhou University of Light Industry School of Physics and Wuhan National High Magnetic Field Center Huazhong University of Science and Technology

We theoretically investigate the spin resolved Friedel oscillation （FO） and quasiparticle interference （QPI） in graphene induced by an Anderson *** the impurity becomes magnetic,the resulted FO becomes spin dependent,which gives rise to a local magnetic moment oscillation with an envelop decaying as r-2in real space in the doping ***,at half filling,the electron density and local magnetic moment will not oscillate but decay as *** spin resolved FO has both sublattice and spin ***,the local magnetic moment decay at half filling only occurs at one sublattice of graphene,which is quite like the phenomenon observed in the STM experiment (***ález-Herrero et al.,Science 352,437 （2016）).We further give an analytic formula about such spin dependent FO based on the stationary phase ***,we study the interference of quasiparticles around the magnetic impurity by calculating the spin dependent Fourier-transformed local density of states （FT-LDOS）.Our work gives a comprehensive understanding about the local magnetic moment oscillation around an Anderson impurity on graphene.

关键词： Friedel oscillation local magnetic moment graphene Anderson impurity

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Neural Regeneration Research 2023年第9期18卷 1968-1975页

作者： He-Mei Huang Gui-Sheng Chen Zhong-Yi Liu Qing-Lin Meng Jia-Hong Li Han-Wen Dong Yu-Chen Chen Fei Zhao Xiao-Wu Tang jin-liang gao Xi-Ming Chen Yue-Xin Cai Yi-Qing Zheng Department of Otolaryngology Sun Yat-sen Memorial HospitalSun Yat-sen UniversityGuangzhouGuangdong ProvinceChina Institute of Hearing and Speech-Language Science Sun Yat-sen UniversityGuangzhouGuangdong ProvinceChina Department of Otolaryngology Shenzhen-Shanwei Central HospitalSun Yat-sen Memorial HospitalSun Yat-sen UniversityShanweiGuangdong ProvinceChina Department of Radiology Guangdong Provincial Work Injury Rehabilitation HospitalGuangzhouGuangdong ProvinceChina Acoustics Lab of School of Physics and Optoelectronics and State Key Laboratory of Subtropical Building Science South China University of TechnologyGuangzhouGuangdong ProvinceChina Department of Radiology Nanjing First HospitalNanjing Medical UniversityNanjingJiangsu ProvinceChina Department of Speech and Language Therapy and Hearing Science Cardiff Metropolitan UniversityCardiffUK Department of Otolaryngology Shenzhen Baoan Maternal and Child Health HospitalShenzhenGuangdong ProvinceChina

Patients with age-related hearing loss face hearing difficulties in daily *** causes of age-related hearing loss are complex and include changes in peripheral hearing,central processing,and cognitive-related ***,the factors by which aging relates to hearing loss via changes in audito ry processing ability are still *** this cross-sectional study,we evaluated 27 older adults(over 60 years old) with age-related hearing loss,21 older adults(over 60years old) with normal hearing,and 30 younger subjects(18-30 years old) with normal *** used the outcome of the uppe r-threshold test,including the time-compressed thres h old and the speech recognition threshold in noisy conditions,as a behavioral indicator of auditory processing *** also used electroencephalogra p hy to identify presbycusis-related abnormalities in the brain while the participants were in a spontaneous resting *** timecompressed threshold and speech recognition threshold data indicated significant diffe rences among the *** patients with age-related hearing loss,information masking(babble noise) had a greater effect than energy masking(speech-shaped noise) on processing *** terms of resting-state electroencephalography signals,we observed enhanced fro ntal lobe(Brodmann’s area,BA11) activation in the older adults with normal hearing compared with the younger participants with normal hearing,and greater activation in the parietal(BA7) and occipital(BA19) lobes in the individuals with age-related hearing loss compared with the younger *** functional connection analysis suggested that compared with younger people,the older adults with normal hearing exhibited enhanced connections among networks,including the default mode network,sensorimotor network,cingulo-opercular network,occipital network,and frontoparietal *** results suggest that both normal aging and the development of age-related hearing loss have a negative effect on

关键词： age-related hearing loss aging electroencephalography fast-speech comprehension functional brain network functional connectivity restingstate sLORETA source analysis speech reception threshold