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Evaluating reservoir suitability for large-scale hydrogen storage:A preliminary assessment considering reservoir properties 被引量:1
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作者 Chinedu J.Okere James J.Sheng Chinedu Ejike 《Energy Geoscience》 EI 2024年第4期198-211,共14页
With rising demand for clean energy,global focus turns to finding ideal sites for large-scale underground hydrogen storage(UHS)in depleted petroleum reservoirs.A thorough preliminary reservoir evaluation before hydrog... With rising demand for clean energy,global focus turns to finding ideal sites for large-scale underground hydrogen storage(UHS)in depleted petroleum reservoirs.A thorough preliminary reservoir evaluation before hydrogen(H_(2))injection is crucial for UHS success and safety.Recent criteria for UHS often emphasize economics and chemistry,neglecting key reservoir attributes.This study introduces a comprehensive framework for the reservoir-scale preliminary assessment,specifically tailored for long-term H_(2) storage within depleted gas reservoirs.The evaluation criteria encompass critical components,including reservoir geometry,petrophysical properties,tectonics,and formation fluids.To illustrate the practical application of this approach,we assess the Barnett shale play reservoir parameters.The assessment unfolds through three key stages:(1)A systematic evaluation of the reservoir's properties against our comprehensive screening criteria determines its suitability for H_(2) storage.(2)Using both homogeneous and multilayered gas reservoir models,we explore the feasibility and efficiency of H_(2) storage.This phase involves an in-depth examination of reservoir behavior during the injection stage.(3)To enhance understanding of UHS performance,sensitivity analyses investigate the impact of varying reservoir dimensions and injection/production pressures.The findings reveal the following:(a)Despite potential challenges associated with reservoir compaction and aquifer support,the reservoir exhibits substantial promise as an H_(2) storage site.(b)Notably,a pronounced increase in reservoir pressure manifests during the injection stage,particularly in homogeneous reservoirs.(c)Furthermore,optimizing injection-extraction cycle efficiency can be achieved by augmenting reservoir dimensions while maintaining a consistent thickness.To ensure a smooth transition to implementation,further comprehensive investigations are advised,including experimental and numerical studies to address injectivity concerns and explore storage site development.This evaluation framework is a valuable tool for assessing the potential of depleted gas reservoirs for large-scale hydrogen storage,advancing global eco-friendly energy systems. 展开更多
关键词 Site selection Underground hydrogen storage preliminary evaluation Depleted petroleum reservoirs Reservoir assessment
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Vertebroplasty and Kyphoplasty: Indications and Results, a Preliminary Senegalese Experience from the Neurosurgery Department of the CHNU of Fann
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作者 El Hadj cheikh Ndiaye Sy Celebre Mualaba +3 位作者 Amidou Adjamou Maguette Mbaye Mbaye Thioub Momar Code Ba 《Open Journal of Modern Neurosurgery》 2023年第4期156-165,共10页
Introduction: Vertebroplasty and kyphoplasty are percutaneous techniques that consist in injecting an acrylic cement into the body of a pathological vertebra. This work aims to report the experience the of Fann’s neu... Introduction: Vertebroplasty and kyphoplasty are percutaneous techniques that consist in injecting an acrylic cement into the body of a pathological vertebra. This work aims to report the experience the of Fann’s neurosurgery department in treating certain spinal pathologies by vertebroplasty and kyphoplasty. Methods: During a 3-year period from July 1, 2019 to July 31, 2022, we conducted a retrospective, descriptive and analytical study, including patients who underwent vertebroplasty or kyphoplasty for dorsolumbar spinal pathology. Results: The mean age of the 13 patients in our study was 51.61 years. Female gender was predominant in 62% (n = 8). The context of spontaneous onset was found in six patients. Nine patients had a VAS (visual analogue scale) ≥ 8 (69.23%). On clinical examination, all patients had a syndrome without neurological deficits. 84.61% of patients had a CT scan (n = 11). The dorsolumbar hinge was most affected with 53.85% of cases. Seven patients had a vertebral compression of between 25% and. The average degree of kyphosis was 8˚ and seven patients had a degree of kyphosis ≥ 10˚. Tumour aetiology accounted for 46.15% of cases. Kyphoplasty was performed in 61.53% (n = 9) of the cases and vertebroplasty was performed in 38.47% (n = 4) of the patients. Kyphoplasty was associated with biopsy in two cases and with osteosynthesis in one patient. Vertebroplasty was always associated with a biopsy. The evolution was favourable with a significant reduction in pain and vertebral kyphosis. The mean VAS decreased from 8.15 to 0.69 three months after treatment and the mean kyphosis decreased from 8˚ to 2˚. Conclusion: Kyphoplasty and vertebroplasty as percutaneous techniques allow consolidation of the vertebral body and pain relief. Kyphoplasty alone not only reduces pain but also restores the height of the compacted vertebral body. 展开更多
关键词 Vertebroplasty and Kyphoplasty Indications and Results preliminary Senegalese Experience
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Discussion on Teaching Reform of Preliminary Landscape Design 被引量:1
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作者 杨艺红 夏云 《Journal of Landscape Research》 2010年第6期84-86,90,共4页
Traditional Preliminary Landscape Design teaching had the following disadvantages:① Teaching achievements mainly showed as the onerous graphics and its assignments were in the mechanical and flowing form.② The major... Traditional Preliminary Landscape Design teaching had the following disadvantages:① Teaching achievements mainly showed as the onerous graphics and its assignments were in the mechanical and flowing form.② The majority of teaching liked to imitate the model charts.③ Student's creative thinking cannot be developed because of the fixed teaching mode.④ In the external environment,computer was applied in design industry widely,landscape performance has gradually separated from landscape design,design capacity and essence are paid much more attention.Therefore many needed reforms were made at a large scale in 2008.After the adjustment,the course of Preliminary Landscape Design was opened in the second semester of Grade 1 and was finished within one semester with the total 48 credit hours.Teaching content was the introduction to landscape design.This teaching reform put forward 4 types of new teaching methods:stimulate students' interest-introducing into scale model making;interactive teaching-landscaping surveying and mapping practice;heuristic teaching-spatial cognition;full-scale model-the small garden design. 展开更多
关键词 LANDSCAPE ARCHITECTURE preliminary LANDSCAPE design COURSE TEACHING method
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Preliminary Study on the Application of Color in the Landscape Design
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作者 储可可 《Journal of Landscape Research》 2009年第11期15-19,共5页
In experiencing the modern landscape,color is perceived through the sight which relies on both the concrete substance and an Abstract matter-light.In this research,through analyzing the visual property and psychologic... In experiencing the modern landscape,color is perceived through the sight which relies on both the concrete substance and an Abstract matter-light.In this research,through analyzing the visual property and psychological perception,the 'color' used in modern landscape design is interpreted,and the application forms and methods of color in landscape design are explained in terms of the application and technique of color in site culture. 展开更多
关键词 COLOR LANDSCAPE DESIGN preliminary study on the APPLICATION
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Dynamic signal control for at-grade intersections under preliminary autonomous vehicle environment 被引量:3
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作者 LUO Si-da ZHANG Shuai 《Journal of Central South University》 SCIE EI CAS CSCD 2019年第4期893-904,共12页
Autonomous vehicle technology will transform fundamentally urban traffic systems.To better enhance the coming era of connected and autonomous vehicles,effective control strategies that interact wisely with these intel... Autonomous vehicle technology will transform fundamentally urban traffic systems.To better enhance the coming era of connected and autonomous vehicles,effective control strategies that interact wisely with these intelligent vehicles for signalized at-grade intersections are indispensable.Vehicle-to-infrastructure communication technology offers unprecedented clues to reduce the delay at signalized intersections by innovative information-based control strategies.This paper proposes a new dynamic control strategy for signalized intersections with vehicle-to-signal information.The proposed strategy is called periodic vehicle holding(PVH)strategy while the traffic signal can provide information for the vehicles that are approaching an intersection.Under preliminary autonomous vehicle(PAV)environment,left-turning and through-moving vehicles will be sorted based on different information they receive.The paper shows how PVH reorganizes traffic to increase the capacity of an intersection without causing severe spillback to the upstream intersection.Results show that PVH can reduce the delay by approximately 15%at a signalized intersection under relatively high traffic demand. 展开更多
关键词 dynamic traffic control vehicle-to-signal signalized intersection preliminary autonomous vehicle environment
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Preliminary Analysis of Climatic Variation during the Last 39 Years in China 被引量:22
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作者 陈隆勋 邵永宁 +2 位作者 董敏 任阵海 田广生 《Advances in Atmospheric Sciences》 SCIE CAS CSCD 1991年第3期279-288,共10页
The preliminary analysis of climatic variation in China during the last 39 years has been made in this paper. The results show that although the global climate is getting warmer, some parts of China are cooling. The w... The preliminary analysis of climatic variation in China during the last 39 years has been made in this paper. The results show that although the global climate is getting warmer, some parts of China are cooling. The warming only occurs in Northeast, North and the west part of Northwest China while the areas between about 35°N and Nanling Mountain, east of the Tibetan Plateau in China are getting cooler. The cooling centers are located in Sichuan, the south part of Shaanxi and the north part of Yunnan respectively. According to the theory of greenhouse effect, there are much precipitation at low and high latitudes and less precipitation in middle latitude. However, the precipitation in the most parts of China has been decreased, especially in North and Northwest China. 展开更多
关键词 preliminary Analysis of Climatic Variation during the Last 39 Years in China
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Preliminary results of the High Energetic Particle Package on-board the China Seismo-Electromagnetic Satellite 被引量:5
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作者 Wei Chu JianPing Huang +5 位作者 XuHui Shen Ping Wang XinQiao Li ZhengHua An YanBing Xu XiaoHua Liang 《Earth and Planetary Physics》 2018年第6期489-498,共10页
The high energetic particle package(HEPP) on-board the China Seismo-Electromagnetic Satellite(CSES) was launched on February 2, 2018. This package includes three independent detectors: HEPP-H, HEPP-L, and HEPP-X. HEPP... The high energetic particle package(HEPP) on-board the China Seismo-Electromagnetic Satellite(CSES) was launched on February 2, 2018. This package includes three independent detectors: HEPP-H, HEPP-L, and HEPP-X. HEPP-H and HEPP-L can detect energetic electrons from 100 keV to approximately 50 MeV and protons from 2 MeV to approximately 200 MeV. HEPP-X can measure solar X-rays in the energy range from 1 keV to approximately 20 keV. The objective of the HEPP payload was to provide a survey of energetic particles with high energy, pitch angle, and time resolutions in order to gain new insight into the space radiation environments of the near-Earth system. Particularly, the HEPP can provide new measurements of the magnetic storm related precipitation of electrons in the slot region, and the dynamics of radiation belts. In this paper, the HEPP scientific data sets are described and initial results are provided.The scientific data can show variations in the flux of energetic particles during magnetic storms. 展开更多
关键词 CSES energetic particles HEPP data sets data quality preliminary results
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Preliminary study on the distribution of nutrients, organic matter, trace metals in sea surface microlayer in Xiamen Bay and Jiulong Estuary 被引量:4
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作者 Hong Huasheng and Lin Jie Department of Oceanography, Xiamen University. Xiamen, China 《Acta Oceanologica Sinica》 SCIE CAS CSCD 1990年第1期81-90,共10页
The enrichment of nutrients (Noa-, Noa-, PO43-), suspended particles, organic matter (POC, PON,DOC) , and trace metals (Cu, Ni, Cd) was determined in the sea surface microlayer of Xiamen Bay and Jiulong Estuary. The m... The enrichment of nutrients (Noa-, Noa-, PO43-), suspended particles, organic matter (POC, PON,DOC) , and trace metals (Cu, Ni, Cd) was determined in the sea surface microlayer of Xiamen Bay and Jiulong Estuary. The mean enrichment factors ([Xi]microlayer/[Xi ]15cm in depth) mostly ranged between 1 . 0 and 2. 0. The dissolved forms were the major forms of the components measured, the enrichment of dissolved organic matter and suspended particles could lead to the changes in the total amount and speciation of nutrients and trace metals. No correlation was observed between sample concentrations, speciation, enrichment factors and sample locations. However, some evidence shows that these parameters are correlated with sea state, indicating the complexity and dynamic nature of the sea surface microlayer. 展开更多
关键词 preliminary study on the distribution of nutrients trace metals in sea surface microlayer in Xiamen Bay and Jiulong Estuary BAY
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Preliminary Validation of Tumor Cell Attachment Inhibition Assay for Developmental Toxicants With Mouse S180 Cells 被引量:3
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作者 LU RONG-ZHU CHEN CHUAN-FEN +1 位作者 LIN HUI-FEN HUANG LEI-MING AND JIN XI-PENG.(Department of Preventive Medicine, Zhenjiang Medical College, 3 YizhengRoad, Zhedeng, 212001 China)(Department of Occupational Health,School of Public Health, Shanghai Medical Univer 《Biomedical and Environmental Sciences》 SCIE CAS CSCD 1999年第4期253-259,共7页
This study was designed to explore the possibility of using ascitic mouse sarcoma cell line (S180) to validate the mouse tumor cell attachment assay for developmental toxicants, and to test the inhibitory effects of v... This study was designed to explore the possibility of using ascitic mouse sarcoma cell line (S180) to validate the mouse tumor cell attachment assay for developmental toxicants, and to test the inhibitory effects of various developmental toxicants. The results showed that 2 of 3 developmental toxicants under consideration, sodium pentobarbital and ethanol, significantly inhibited S180cells attachment to Concanavalin A-coaed surfaces. Inhibition was dependent on concentration, and the IC50 (the concentration tha reduced attachment by 50% ), of these 2 chemicals was 1.2×10-3mol/L and 1 .0 mol/L, respectively. Anoher developmental toxiant, hydmiortisone, did not show inhibitory activity. Two non-developmental toxicants, sodium chloride and glycine were also tested and these did not decrease attachment rates. The main results reported here were generally sindlar to those obtained with ascitic mouse ovdrian tumor cells as a model. Therefore, this study added further evidence to the conclusion that cell specificity does not lindt attachment inhibition to Con A-coated surfaces, so S180 cell may serve as an altemative cell model, especially when other cell lines are unavailable. Furthermore, after optimal validation, it can be suggested that an S180 cell attachment assay may be a candidate for a series of assays to detect developmental toxicants. 展开更多
关键词 cell Cell In preliminary Validation of Tumor Cell Attachment Inhibition Assay for Developmental Toxicants With Mouse S180 Cells line
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Constructions and Preliminary HV Conditioning of a Photocathode Direct-Current Electron Gun at IHEP 被引量:3
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作者 李小平 王九庆 +6 位作者 徐金强 裴士伦 肖欧正 何大勇 吕琨 孔祥成 彭晓华 《Chinese Physics Letters》 SCIE CAS CSCD 2017年第7期56-60,共5页
As one of the most important key technologies for future advanced light source based on the energy recovery linac, a photocathode dc electron gun is supported by Institute of High Energy Physics (IHEP) to address th... As one of the most important key technologies for future advanced light source based on the energy recovery linac, a photocathode dc electron gun is supported by Institute of High Energy Physics (IHEP) to address the technical challenges of producing very low ernittance beams at high average current. Construction of the dc gun is completed and a preliminary high voltage conditioning is carried out up to 440 k V. The design, construction and preliminary HV conditioning results for the dc gun are described. 展开更多
关键词 ERL Constructions and preliminary HV Conditioning of a Photocathode Direct-Current Electron Gun at IHEP HV
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Preliminary Design of Poloildal Field Power Supply for HT-7U Super-conducting Tokamak 被引量:4
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作者 刘正之 许家治 +5 位作者 傅鹏 陶骏 温家良 黄琪 李俊 高格 《Plasma Science and Technology》 SCIE EI CAS CSCD 2000年第6期529-535,共7页
This paper presents the preliminary design of poloidal field power supply system of HT-7U super-conducting tokamak. With an emphasis on AC/DC power converter, DC circuit breaker, quench protection, harmonic suppressio... This paper presents the preliminary design of poloidal field power supply system of HT-7U super-conducting tokamak. With an emphasis on AC/DC power converter, DC circuit breaker, quench protection, harmonic suppression and static var. compensation, and AC power system, the design principle and features are introduced, the design scheme and R & D progress are described, the simulation studies and laboratory test are presented too. 展开更多
关键词 preliminary Design of Poloildal Field Power Supply for HT-7U Super-conducting Tokamak PFPS HT
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Preliminary analysis of distribution and variation of perennialmonthly mean water masses in the Bohai Sea,the Huanghai Sea and the East China Sea 被引量:6
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作者 Liu Shuxun, Shen Xinqiang, Wang Youqin and Han Shixin 1. East China Sea Fisheries Research Institute, No. 300, Jungong Road, Shanghai 200090, China 《Acta Oceanologica Sinica》 SCIE CAS CSCD 1992年第4期483-498,共16页
On the basis of perennial monthly mean temperature and salinity data, the classification of monthly water masses at the surface and the bottom in the Bohai Sea, the Huanghai Sea and the East China Sea, has been made b... On the basis of perennial monthly mean temperature and salinity data, the classification of monthly water masses at the surface and the bottom in the Bohai Sea, the Huanghai Sea and the East China Sea, has been made by using the method of fuzzy cluster from the modified characteristic of water masses in the shallow water area. In this paper, the basic features, growth and decline patterns of water masses in relation to fishing grounds in the whole shelves of the Bohai Sea, the Huanghai Sea and the East China Sea are discussed with emphasis. 展开更多
关键词 preliminary analysis of distribution and variation of perennialmonthly mean water masses in the Bohai Sea the Huanghai Sea and the East China Sea
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A Preliminary Study on DNA Mutation Induction of Maize Pollen Implanted by Low Energy N^+ Beam 被引量:3
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作者 程备久 阚显照 +1 位作者 朱苏文 李培金 《Plasma Science and Technology》 SCIE EI CAS CSCD 2001年第1期659-664,共6页
The maize pollens were implanted with seven different doses of 30 keV N+ beam respectively, The genomic DNA polymorphism from treated pollens were analyzed with 104 primers by using RAPD respectively. The results sho... The maize pollens were implanted with seven different doses of 30 keV N+ beam respectively, The genomic DNA polymorphism from treated pollens were analyzed with 104 primers by using RAPD respectively. The results showed that N^+ beam-induced mutation of maize pollens can result in the change of their DNA bases. The mutation is not properly random and its frequency increases with a rise in 30 keV N+ beam doses. It is conformed with A-G transformation, which is one of the most important factors in DNA bases induced by N+ beam. 展开更多
关键词 DNA A preliminary Study on DNA Mutation Induction of Maize Pollen Implanted by Low Energy N BEAM
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A PRELIMINARY STUDY OF THE WATER—SOLUBLE OLIGOPEPTIDES AND AMINO ACIDS OF GINSENG 被引量:2
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作者 Liu YANG Yun Hua YE Qi Yi XING Department of Chemistry,Peking University Beijing,100871 《Chinese Chemical Letters》 SCIE CAS CSCD 1990年第1期51-54,共4页
γ-Amino butyric acid(GABA)and several γ-glutamyl oligopeptides were isolated and identified from water-extract of ginseng.
关键词 A preliminary STUDY OF THE WATER SOLUBLE OLIGOPEPTIDES AND AMINO ACIDS OF GINSENG TFA
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Preliminary Study on Underwater Ambient Noise Generated by Typhoons 被引量:6
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作者 王璟琰 李风华 《Chinese Physics Letters》 SCIE CAS CSCD 2015年第4期62-64,共3页
We present a typhoon-generated noise model with which the noise intensity during typhoons can be estimated accurately. The model is verified through experimental study, and the simulation results agree reasonably with... We present a typhoon-generated noise model with which the noise intensity during typhoons can be estimated accurately. The model is verified through experimental study, and the simulation results agree reasonably with the experimental data. The measured noise intensity is approximately proportional to the cube of the local wind speed. 展开更多
关键词 preliminary Study on Underwater Ambient Noise Generated by Typhoons
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Preliminary study of gonadotropin-releasing analogue (GnRH-A) initiated gonadal development of amphioxus 被引量:2
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作者 Fang Yongqiang, Qi Xiang, Liang Ping and Hong Guiying Third Institute of Oceanography, State Oceanic Administration, Xiamen, China 《Acta Oceanologica Sinica》 SCIE CAS CSCD 1990年第4期579-585,共7页
Amphioxus in the seasonally regressed phase of gonadat development were used in this study. Each sample animal was injected with 40 nanogram of synthetic gonadotropin-releasing hormone analogue (GnRH-A) in distilled w... Amphioxus in the seasonally regressed phase of gonadat development were used in this study. Each sample animal was injected with 40 nanogram of synthetic gonadotropin-releasing hormone analogue (GnRH-A) in distilled water every other day for up to 16 days; control animals received similar volumes of distilled wnter only. Both hormone-treated samples and control animals were examined under microscope every eight days and every twelve days. Then all the animals were killed on the 16th day. Gonads earlier development and a more advanced degree of gametogenesis are in the hormone-treated group than in the control group. Thus, GnRH-A can initiate and accelerate the gonadal development in gonadally regressed am-phioxus. GnRH-A in some form may be important in regulating the gonadal development in amphioxus as well as in vertebrates. 展开更多
关键词 preliminary study of gonadotropin-releasing analogue GNRH-A
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A model of seismicity with fractal structures and a preliminary discussion on the relation between D and b value 被引量:1
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作者 蒋海昆 刁守中 《Acta Seismologica Sinica(English Edition)》 CSCD 1995年第4期647-652,共6页
关键词 DISCUSSION preliminary FRACTAL between model of and RELATION SEISMICITY STRUCTURES
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Preliminary in vitro evaluation of neuroprotective and monoamine oxidase type B inhibitory effects of newly synthesized 8-aminocaffeines 被引量:1
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作者 Magdalena Kondeva-Burdina Maya Georgieva +2 位作者 Alexandra Kasabova-Angelova Virginia Tzankova Alexander Zlatkov 《Neural Regeneration Research》 SCIE CAS CSCD 2019年第6期971-972,共2页
The expected growth of the elderly population at highest risk for Parkinson’s disease(PD)in the next decades makes the identification of factors that promote or prevent the disease an important goal.In addition,new t... The expected growth of the elderly population at highest risk for Parkinson’s disease(PD)in the next decades makes the identification of factors that promote or prevent the disease an important goal.In addition,new therapies-aiming to delay the progression of PD are also needed(Prediger,2010).However,there have been few clinical trials designed to investigate neuroprotection.Thus the application of an appropriate in vitro model such as the neuroblastoma SH-SY5Y cell line is extremely helpful.These cells were selected due to its human origin,catecholaminergic neuronal properties,and ease of maintenance(Xicoy et al.,2017). 展开更多
关键词 preliminary NEUROPROTECTIVE MONOAMINE OXIDASE
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Preliminary Group Classification for One Class of Nonlinear Wave Equations 被引量:1
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作者 李吉娜 张颖 张顺利 《Communications in Theoretical Physics》 SCIE CAS CSCD 2010年第8期229-235,共7页
The group classification is carried out on the nonlinear wave equation utt = f(x,u, ux)uzz + g(x,u,uz) by using the preliminary group classification approach. The generators of equivalence group are determined an... The group classification is carried out on the nonlinear wave equation utt = f(x,u, ux)uzz + g(x,u,uz) by using the preliminary group classification approach. The generators of equivalence group are determined and the corresponding reduced forms are obtained. The result of the work is shown in table form. 展开更多
关键词 preliminary group classification optimal system nonlinear wave equation
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Preliminary Engineering Design of Toroidal Field Magnet System for Superconducting Tokamak HT-7U 被引量:2
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作者 潘引年 翁佩德 +9 位作者 陈灼民 李保增 武松涛 吴维越 高秉钧 郁杰 吴镝 吴雪冰 陈强 陈文革 《Plasma Science and Technology》 SCIE EI CAS CSCD 2000年第2期235-243,共9页
HT7U is a large fusion experimental device. It will be built in the Institute of Plasma Physics of Chinese Academy of Sciences. The mission of HT-7U is to develop the scientific basis for a continuously operating toka... HT7U is a large fusion experimental device. It will be built in the Institute of Plasma Physics of Chinese Academy of Sciences. The mission of HT-7U is to develop the scientific basis for a continuously operating tokama-k fusion reactor. This paper describes only a toroidal field (TF) superconducting magnet system of HT7U. In this paper, design criteria of conductor and stability analysis, coil winding and support structure design of magnet system, mechanical calculation and stress analysis, heat load evaluation are given. 展开更多
关键词 HT preliminary Engineering Design of Toroidal Field Magnet System for Superconducting Tokamak HT-7U
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